drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 27
  45 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  46              __stringify(DRV_VERSION_MINOR) "." \
  47              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  48 const char i40e_driver_version_str[] = DRV_VERSION;
  49 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  50
  51 /* a bit of forward declarations */
  52 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  53 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  54 static int i40e_add_vsi(struct i40e_vsi *vsi);
  55 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  56 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  57 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  58 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  59 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  90         /* required last entry */
  91         {0, }
  92 };
  93 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  94
  95 #define I40E_MAX_VF_COUNT 128
  96 static int debug = -1;
  97 module_param(debug, uint, 0);
  98 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  99
 100 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 101 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 102 MODULE_LICENSE("GPL");
 103 MODULE_VERSION(DRV_VERSION);
 104
 105 static struct workqueue_struct *i40e_wq;
 106
 107 /**
 108  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 109  * @hw:   pointer to the HW structure
 110  * @mem:  ptr to mem struct to fill out
 111  * @size: size of memory requested
 112  * @alignment: what to align the allocation to
 113  **/
 114 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 115                             u64 size, u32 alignment)
 116 {
 117         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 118
 119         mem->size = ALIGN(size, alignment);
 120         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 121                                       &mem->pa, GFP_KERNEL);
 122         if (!mem->va)
 123                 return -ENOMEM;
 124
 125         return 0;
 126 }
 127
 128 /**
 129  * i40e_free_dma_mem_d - OS specific memory free for shared code
 130  * @hw:   pointer to the HW structure
 131  * @mem:  ptr to mem struct to free
 132  **/
 133 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 134 {
 135         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 136
 137         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 138         mem->va = NULL;
 139         mem->pa = 0;
 140         mem->size = 0;
 141
 142         return 0;
 143 }
 144
 145 /**
 146  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 147  * @hw:   pointer to the HW structure
 148  * @mem:  ptr to mem struct to fill out
 149  * @size: size of memory requested
 150  **/
 151 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 152                              u32 size)
 153 {
 154         mem->size = size;
 155         mem->va = kzalloc(size, GFP_KERNEL);
 156
 157         if (!mem->va)
 158                 return -ENOMEM;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_free_virt_mem_d - OS specific memory free for shared code
 165  * @hw:   pointer to the HW structure
 166  * @mem:  ptr to mem struct to free
 167  **/
 168 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 169 {
 170         /* it's ok to kfree a NULL pointer */
 171         kfree(mem->va);
 172         mem->va = NULL;
 173         mem->size = 0;
 174
 175         return 0;
 176 }
 177
 178 /**
 179  * i40e_get_lump - find a lump of free generic resource
 180  * @pf: board private structure
 181  * @pile: the pile of resource to search
 182  * @needed: the number of items needed
 183  * @id: an owner id to stick on the items assigned
 184  *
 185  * Returns the base item index of the lump, or negative for error
 186  *
 187  * The search_hint trick and lack of advanced fit-finding only work
 188  * because we're highly likely to have all the same size lump requests.
 189  * Linear search time and any fragmentation should be minimal.
 190  **/
 191 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 192                          u16 needed, u16 id)
 193 {
 194         int ret = -ENOMEM;
 195         int i, j;
 196
 197         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 198                 dev_info(&pf->pdev->dev,
 199                          "param err: pile=%p needed=%d id=0x%04x\n",
 200                          pile, needed, id);
 201                 return -EINVAL;
 202         }
 203
 204         /* start the linear search with an imperfect hint */
 205         i = pile->search_hint;
 206         while (i < pile->num_entries) {
 207                 /* skip already allocated entries */
 208                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 209                         i++;
 210                         continue;
 211                 }
 212
 213                 /* do we have enough in this lump? */
 214                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 215                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 216                                 break;
 217                 }
 218
 219                 if (j == needed) {
 220                         /* there was enough, so assign it to the requestor */
 221                         for (j = 0; j < needed; j++)
 222                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 223                         ret = i;
 224                         pile->search_hint = i + j;
 225                         break;
 226                 }
 227
 228                 /* not enough, so skip over it and continue looking */
 229                 i += j;
 230         }
 231
 232         return ret;
 233 }
 234
 235 /**
 236  * i40e_put_lump - return a lump of generic resource
 237  * @pile: the pile of resource to search
 238  * @index: the base item index
 239  * @id: the owner id of the items assigned
 240  *
 241  * Returns the count of items in the lump
 242  **/
 243 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 244 {
 245         int valid_id = (id | I40E_PILE_VALID_BIT);
 246         int count = 0;
 247         int i;
 248
 249         if (!pile || index >= pile->num_entries)
 250                 return -EINVAL;
 251
 252         for (i = index;
 253              i < pile->num_entries && pile->list[i] == valid_id;
 254              i++) {
 255                 pile->list[i] = 0;
 256                 count++;
 257         }
 258
 259         if (count && index < pile->search_hint)
 260                 pile->search_hint = index;
 261
 262         return count;
 263 }
 264
 265 /**
 266  * i40e_find_vsi_from_id - searches for the vsi with the given id
 267  * @pf - the pf structure to search for the vsi
 268  * @id - id of the vsi it is searching for
 269  **/
 270 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 271 {
 272         int i;
 273
 274         for (i = 0; i < pf->num_alloc_vsi; i++)
 275                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 276                         return pf->vsi[i];
 277
 278         return NULL;
 279 }
 280
 281 /**
 282  * i40e_service_event_schedule - Schedule the service task to wake up
 283  * @pf: board private structure
 284  *
 285  * If not already scheduled, this puts the task into the work queue
 286  **/
 287 void i40e_service_event_schedule(struct i40e_pf *pf)
 288 {
 289         if (!test_bit(__I40E_DOWN, &pf->state) &&
 290             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
 291                 queue_work(i40e_wq, &pf->service_task);
 292 }
 293
 294 /**
 295  * i40e_tx_timeout - Respond to a Tx Hang
 296  * @netdev: network interface device structure
 297  *
 298  * If any port has noticed a Tx timeout, it is likely that the whole
 299  * device is munged, not just the one netdev port, so go for the full
 300  * reset.
 301  **/
 302 #ifdef I40E_FCOE
 303 void i40e_tx_timeout(struct net_device *netdev)
 304 #else
 305 static void i40e_tx_timeout(struct net_device *netdev)
 306 #endif
 307 {
 308         struct i40e_netdev_priv *np = netdev_priv(netdev);
 309         struct i40e_vsi *vsi = np->vsi;
 310         struct i40e_pf *pf = vsi->back;
 311         struct i40e_ring *tx_ring = NULL;
 312         unsigned int i, hung_queue = 0;
 313         u32 head, val;
 314
 315         pf->tx_timeout_count++;
 316
 317         /* find the stopped queue the same way the stack does */
 318         for (i = 0; i < netdev->num_tx_queues; i++) {
 319                 struct netdev_queue *q;
 320                 unsigned long trans_start;
 321
 322                 q = netdev_get_tx_queue(netdev, i);
 323                 trans_start = q->trans_start;
 324                 if (netif_xmit_stopped(q) &&
 325                     time_after(jiffies,
 326                                (trans_start + netdev->watchdog_timeo))) {
 327                         hung_queue = i;
 328                         break;
 329                 }
 330         }
 331
 332         if (i == netdev->num_tx_queues) {
 333                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 334         } else {
 335                 /* now that we have an index, find the tx_ring struct */
 336                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 337                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 338                                 if (hung_queue ==
 339                                     vsi->tx_rings[i]->queue_index) {
 340                                         tx_ring = vsi->tx_rings[i];
 341                                         break;
 342                                 }
 343                         }
 344                 }
 345         }
 346
 347         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 348                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 349         else if (time_before(jiffies,
 350                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 351                 return;   /* don't do any new action before the next timeout */
 352
 353         if (tx_ring) {
 354                 head = i40e_get_head(tx_ring);
 355                 /* Read interrupt register */
 356                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 357                         val = rd32(&pf->hw,
 358                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 359                                                 tx_ring->vsi->base_vector - 1));
 360                 else
 361                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 362
 363                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 364                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 365                             head, tx_ring->next_to_use,
 366                             readl(tx_ring->tail), val);
 367         }
 368
 369         pf->tx_timeout_last_recovery = jiffies;
 370         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 371                     pf->tx_timeout_recovery_level, hung_queue);
 372
 373         switch (pf->tx_timeout_recovery_level) {
 374         case 1:
 375                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 376                 break;
 377         case 2:
 378                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 379                 break;
 380         case 3:
 381                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 382                 break;
 383         default:
 384                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 385                 break;
 386         }
 387
 388         i40e_service_event_schedule(pf);
 389         pf->tx_timeout_recovery_level++;
 390 }
 391
 392 /**
 393  * i40e_get_vsi_stats_struct - Get System Network Statistics
 394  * @vsi: the VSI we care about
 395  *
 396  * Returns the address of the device statistics structure.
 397  * The statistics are actually updated from the service task.
 398  **/
 399 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 400 {
 401         return &vsi->net_stats;
 402 }
 403
 404 /**
 405  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 406  * @netdev: network interface device structure
 407  *
 408  * Returns the address of the device statistics structure.
 409  * The statistics are actually updated from the service task.
 410  **/
 411 #ifndef I40E_FCOE
 412 static
 413 #endif
 414 void i40e_get_netdev_stats_struct(struct net_device *netdev,
 415                                   struct rtnl_link_stats64 *stats)
 416 {
 417         struct i40e_netdev_priv *np = netdev_priv(netdev);
 418         struct i40e_ring *tx_ring, *rx_ring;
 419         struct i40e_vsi *vsi = np->vsi;
 420         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 421         int i;
 422
 423         if (test_bit(__I40E_DOWN, &vsi->state))
 424                 return;
 425
 426         if (!vsi->tx_rings)
 427                 return;
 428
 429         rcu_read_lock();
 430         for (i = 0; i < vsi->num_queue_pairs; i++) {
 431                 u64 bytes, packets;
 432                 unsigned int start;
 433
 434                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 435                 if (!tx_ring)
 436                         continue;
 437
 438                 do {
 439                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 440                         packets = tx_ring->stats.packets;
 441                         bytes   = tx_ring->stats.bytes;
 442                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 443
 444                 stats->tx_packets += packets;
 445                 stats->tx_bytes   += bytes;
 446                 rx_ring = &tx_ring[1];
 447
 448                 do {
 449                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 450                         packets = rx_ring->stats.packets;
 451                         bytes   = rx_ring->stats.bytes;
 452                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 453
 454                 stats->rx_packets += packets;
 455                 stats->rx_bytes   += bytes;
 456         }
 457         rcu_read_unlock();
 458
 459         /* following stats updated by i40e_watchdog_subtask() */
 460         stats->multicast        = vsi_stats->multicast;
 461         stats->tx_errors        = vsi_stats->tx_errors;
 462         stats->tx_dropped       = vsi_stats->tx_dropped;
 463         stats->rx_errors        = vsi_stats->rx_errors;
 464         stats->rx_dropped       = vsi_stats->rx_dropped;
 465         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 466         stats->rx_length_errors = vsi_stats->rx_length_errors;
 467 }
 468
 469 /**
 470  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 471  * @vsi: the VSI to have its stats reset
 472  **/
 473 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 474 {
 475         struct rtnl_link_stats64 *ns;
 476         int i;
 477
 478         if (!vsi)
 479                 return;
 480
 481         ns = i40e_get_vsi_stats_struct(vsi);
 482         memset(ns, 0, sizeof(*ns));
 483         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 484         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 485         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 486         if (vsi->rx_rings && vsi->rx_rings[0]) {
 487                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 488                         memset(&vsi->rx_rings[i]->stats, 0,
 489                                sizeof(vsi->rx_rings[i]->stats));
 490                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 491                                sizeof(vsi->rx_rings[i]->rx_stats));
 492                         memset(&vsi->tx_rings[i]->stats, 0,
 493                                sizeof(vsi->tx_rings[i]->stats));
 494                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 495                                sizeof(vsi->tx_rings[i]->tx_stats));
 496                 }
 497         }
 498         vsi->stat_offsets_loaded = false;
 499 }
 500
 501 /**
 502  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 503  * @pf: the PF to be reset
 504  **/
 505 void i40e_pf_reset_stats(struct i40e_pf *pf)
 506 {
 507         int i;
 508
 509         memset(&pf->stats, 0, sizeof(pf->stats));
 510         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 511         pf->stat_offsets_loaded = false;
 512
 513         for (i = 0; i < I40E_MAX_VEB; i++) {
 514                 if (pf->veb[i]) {
 515                         memset(&pf->veb[i]->stats, 0,
 516                                sizeof(pf->veb[i]->stats));
 517                         memset(&pf->veb[i]->stats_offsets, 0,
 518                                sizeof(pf->veb[i]->stats_offsets));
 519                         pf->veb[i]->stat_offsets_loaded = false;
 520                 }
 521         }
 522         pf->hw_csum_rx_error = 0;
 523 }
 524
 525 /**
 526  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 527  * @hw: ptr to the hardware info
 528  * @hireg: the high 32 bit reg to read
 529  * @loreg: the low 32 bit reg to read
 530  * @offset_loaded: has the initial offset been loaded yet
 531  * @offset: ptr to current offset value
 532  * @stat: ptr to the stat
 533  *
 534  * Since the device stats are not reset at PFReset, they likely will not
 535  * be zeroed when the driver starts.  We'll save the first values read
 536  * and use them as offsets to be subtracted from the raw values in order
 537  * to report stats that count from zero.  In the process, we also manage
 538  * the potential roll-over.
 539  **/
 540 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 541                                bool offset_loaded, u64 *offset, u64 *stat)
 542 {
 543         u64 new_data;
 544
 545         if (hw->device_id == I40E_DEV_ID_QEMU) {
 546                 new_data = rd32(hw, loreg);
 547                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 548         } else {
 549                 new_data = rd64(hw, loreg);
 550         }
 551         if (!offset_loaded)
 552                 *offset = new_data;
 553         if (likely(new_data >= *offset))
 554                 *stat = new_data - *offset;
 555         else
 556                 *stat = (new_data + BIT_ULL(48)) - *offset;
 557         *stat &= 0xFFFFFFFFFFFFULL;
 558 }
 559
 560 /**
 561  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 562  * @hw: ptr to the hardware info
 563  * @reg: the hw reg to read
 564  * @offset_loaded: has the initial offset been loaded yet
 565  * @offset: ptr to current offset value
 566  * @stat: ptr to the stat
 567  **/
 568 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 569                                bool offset_loaded, u64 *offset, u64 *stat)
 570 {
 571         u32 new_data;
 572
 573         new_data = rd32(hw, reg);
 574         if (!offset_loaded)
 575                 *offset = new_data;
 576         if (likely(new_data >= *offset))
 577                 *stat = (u32)(new_data - *offset);
 578         else
 579                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 580 }
 581
 582 /**
 583  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 584  * @vsi: the VSI to be updated
 585  **/
 586 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 587 {
 588         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 589         struct i40e_pf *pf = vsi->back;
 590         struct i40e_hw *hw = &pf->hw;
 591         struct i40e_eth_stats *oes;
 592         struct i40e_eth_stats *es;     /* device's eth stats */
 593
 594         es = &vsi->eth_stats;
 595         oes = &vsi->eth_stats_offsets;
 596
 597         /* Gather up the stats that the hw collects */
 598         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 599                            vsi->stat_offsets_loaded,
 600                            &oes->tx_errors, &es->tx_errors);
 601         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 602                            vsi->stat_offsets_loaded,
 603                            &oes->rx_discards, &es->rx_discards);
 604         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 605                            vsi->stat_offsets_loaded,
 606                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 607         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->tx_errors, &es->tx_errors);
 610
 611         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 612                            I40E_GLV_GORCL(stat_idx),
 613                            vsi->stat_offsets_loaded,
 614                            &oes->rx_bytes, &es->rx_bytes);
 615         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 616                            I40E_GLV_UPRCL(stat_idx),
 617                            vsi->stat_offsets_loaded,
 618                            &oes->rx_unicast, &es->rx_unicast);
 619         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 620                            I40E_GLV_MPRCL(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_multicast, &es->rx_multicast);
 623         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 624                            I40E_GLV_BPRCL(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->rx_broadcast, &es->rx_broadcast);
 627
 628         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 629                            I40E_GLV_GOTCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->tx_bytes, &es->tx_bytes);
 632         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 633                            I40E_GLV_UPTCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->tx_unicast, &es->tx_unicast);
 636         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 637                            I40E_GLV_MPTCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->tx_multicast, &es->tx_multicast);
 640         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 641                            I40E_GLV_BPTCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->tx_broadcast, &es->tx_broadcast);
 644         vsi->stat_offsets_loaded = true;
 645 }
 646
 647 /**
 648  * i40e_update_veb_stats - Update Switch component statistics
 649  * @veb: the VEB being updated
 650  **/
 651 static void i40e_update_veb_stats(struct i40e_veb *veb)
 652 {
 653         struct i40e_pf *pf = veb->pf;
 654         struct i40e_hw *hw = &pf->hw;
 655         struct i40e_eth_stats *oes;
 656         struct i40e_eth_stats *es;     /* device's eth stats */
 657         struct i40e_veb_tc_stats *veb_oes;
 658         struct i40e_veb_tc_stats *veb_es;
 659         int i, idx = 0;
 660
 661         idx = veb->stats_idx;
 662         es = &veb->stats;
 663         oes = &veb->stats_offsets;
 664         veb_es = &veb->tc_stats;
 665         veb_oes = &veb->tc_stats_offsets;
 666
 667         /* Gather up the stats that the hw collects */
 668         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 669                            veb->stat_offsets_loaded,
 670                            &oes->tx_discards, &es->tx_discards);
 671         if (hw->revision_id > 0)
 672                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 673                                    veb->stat_offsets_loaded,
 674                                    &oes->rx_unknown_protocol,
 675                                    &es->rx_unknown_protocol);
 676         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 677                            veb->stat_offsets_loaded,
 678                            &oes->rx_bytes, &es->rx_bytes);
 679         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 680                            veb->stat_offsets_loaded,
 681                            &oes->rx_unicast, &es->rx_unicast);
 682         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 683                            veb->stat_offsets_loaded,
 684                            &oes->rx_multicast, &es->rx_multicast);
 685         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 686                            veb->stat_offsets_loaded,
 687                            &oes->rx_broadcast, &es->rx_broadcast);
 688
 689         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->tx_bytes, &es->tx_bytes);
 692         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->tx_unicast, &es->tx_unicast);
 695         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->tx_multicast, &es->tx_multicast);
 698         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->tx_broadcast, &es->tx_broadcast);
 701         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 702                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 703                                    I40E_GLVEBTC_RPCL(i, idx),
 704                                    veb->stat_offsets_loaded,
 705                                    &veb_oes->tc_rx_packets[i],
 706                                    &veb_es->tc_rx_packets[i]);
 707                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 708                                    I40E_GLVEBTC_RBCL(i, idx),
 709                                    veb->stat_offsets_loaded,
 710                                    &veb_oes->tc_rx_bytes[i],
 711                                    &veb_es->tc_rx_bytes[i]);
 712                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 713                                    I40E_GLVEBTC_TPCL(i, idx),
 714                                    veb->stat_offsets_loaded,
 715                                    &veb_oes->tc_tx_packets[i],
 716                                    &veb_es->tc_tx_packets[i]);
 717                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 718                                    I40E_GLVEBTC_TBCL(i, idx),
 719                                    veb->stat_offsets_loaded,
 720                                    &veb_oes->tc_tx_bytes[i],
 721                                    &veb_es->tc_tx_bytes[i]);
 722         }
 723         veb->stat_offsets_loaded = true;
 724 }
 725
 726 #ifdef I40E_FCOE
 727 /**
 728  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 729  * @vsi: the VSI that is capable of doing FCoE
 730  **/
 731 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 732 {
 733         struct i40e_pf *pf = vsi->back;
 734         struct i40e_hw *hw = &pf->hw;
 735         struct i40e_fcoe_stats *ofs;
 736         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 737         int idx;
 738
 739         if (vsi->type != I40E_VSI_FCOE)
 740                 return;
 741
 742         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 743         fs = &vsi->fcoe_stats;
 744         ofs = &vsi->fcoe_stats_offsets;
 745
 746         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 747                            vsi->fcoe_stat_offsets_loaded,
 748                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 749         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 750                            vsi->fcoe_stat_offsets_loaded,
 751                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 752         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 753                            vsi->fcoe_stat_offsets_loaded,
 754                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 755         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 756                            vsi->fcoe_stat_offsets_loaded,
 757                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 758         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 759                            vsi->fcoe_stat_offsets_loaded,
 760                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 761         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 762                            vsi->fcoe_stat_offsets_loaded,
 763                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 764         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 765                            vsi->fcoe_stat_offsets_loaded,
 766                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 767         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 768                            vsi->fcoe_stat_offsets_loaded,
 769                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 770
 771         vsi->fcoe_stat_offsets_loaded = true;
 772 }
 773
 774 #endif
 775 /**
 776  * i40e_update_vsi_stats - Update the vsi statistics counters.
 777  * @vsi: the VSI to be updated
 778  *
 779  * There are a few instances where we store the same stat in a
 780  * couple of different structs.  This is partly because we have
 781  * the netdev stats that need to be filled out, which is slightly
 782  * different from the "eth_stats" defined by the chip and used in
 783  * VF communications.  We sort it out here.
 784  **/
 785 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 786 {
 787         struct i40e_pf *pf = vsi->back;
 788         struct rtnl_link_stats64 *ons;
 789         struct rtnl_link_stats64 *ns;   /* netdev stats */
 790         struct i40e_eth_stats *oes;
 791         struct i40e_eth_stats *es;     /* device's eth stats */
 792         u32 tx_restart, tx_busy;
 793         u64 tx_lost_interrupt;
 794         struct i40e_ring *p;
 795         u32 rx_page, rx_buf;
 796         u64 bytes, packets;
 797         unsigned int start;
 798         u64 tx_linearize;
 799         u64 tx_force_wb;
 800         u64 rx_p, rx_b;
 801         u64 tx_p, tx_b;
 802         u16 q;
 803
 804         if (test_bit(__I40E_DOWN, &vsi->state) ||
 805             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 806                 return;
 807
 808         ns = i40e_get_vsi_stats_struct(vsi);
 809         ons = &vsi->net_stats_offsets;
 810         es = &vsi->eth_stats;
 811         oes = &vsi->eth_stats_offsets;
 812
 813         /* Gather up the netdev and vsi stats that the driver collects
 814          * on the fly during packet processing
 815          */
 816         rx_b = rx_p = 0;
 817         tx_b = tx_p = 0;
 818         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 819         tx_lost_interrupt = 0;
 820         rx_page = 0;
 821         rx_buf = 0;
 822         rcu_read_lock();
 823         for (q = 0; q < vsi->num_queue_pairs; q++) {
 824                 /* locate Tx ring */
 825                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 826
 827                 do {
 828                         start = u64_stats_fetch_begin_irq(&p->syncp);
 829                         packets = p->stats.packets;
 830                         bytes = p->stats.bytes;
 831                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 832                 tx_b += bytes;
 833                 tx_p += packets;
 834                 tx_restart += p->tx_stats.restart_queue;
 835                 tx_busy += p->tx_stats.tx_busy;
 836                 tx_linearize += p->tx_stats.tx_linearize;
 837                 tx_force_wb += p->tx_stats.tx_force_wb;
 838                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 839
 840                 /* Rx queue is part of the same block as Tx queue */
 841                 p = &p[1];
 842                 do {
 843                         start = u64_stats_fetch_begin_irq(&p->syncp);
 844                         packets = p->stats.packets;
 845                         bytes = p->stats.bytes;
 846                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 847                 rx_b += bytes;
 848                 rx_p += packets;
 849                 rx_buf += p->rx_stats.alloc_buff_failed;
 850                 rx_page += p->rx_stats.alloc_page_failed;
 851         }
 852         rcu_read_unlock();
 853         vsi->tx_restart = tx_restart;
 854         vsi->tx_busy = tx_busy;
 855         vsi->tx_linearize = tx_linearize;
 856         vsi->tx_force_wb = tx_force_wb;
 857         vsi->tx_lost_interrupt = tx_lost_interrupt;
 858         vsi->rx_page_failed = rx_page;
 859         vsi->rx_buf_failed = rx_buf;
 860
 861         ns->rx_packets = rx_p;
 862         ns->rx_bytes = rx_b;
 863         ns->tx_packets = tx_p;
 864         ns->tx_bytes = tx_b;
 865
 866         /* update netdev stats from eth stats */
 867         i40e_update_eth_stats(vsi);
 868         ons->tx_errors = oes->tx_errors;
 869         ns->tx_errors = es->tx_errors;
 870         ons->multicast = oes->rx_multicast;
 871         ns->multicast = es->rx_multicast;
 872         ons->rx_dropped = oes->rx_discards;
 873         ns->rx_dropped = es->rx_discards;
 874         ons->tx_dropped = oes->tx_discards;
 875         ns->tx_dropped = es->tx_discards;
 876
 877         /* pull in a couple PF stats if this is the main vsi */
 878         if (vsi == pf->vsi[pf->lan_vsi]) {
 879                 ns->rx_crc_errors = pf->stats.crc_errors;
 880                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 881                 ns->rx_length_errors = pf->stats.rx_length_errors;
 882         }
 883 }
 884
 885 /**
 886  * i40e_update_pf_stats - Update the PF statistics counters.
 887  * @pf: the PF to be updated
 888  **/
 889 static void i40e_update_pf_stats(struct i40e_pf *pf)
 890 {
 891         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 892         struct i40e_hw_port_stats *nsd = &pf->stats;
 893         struct i40e_hw *hw = &pf->hw;
 894         u32 val;
 895         int i;
 896
 897         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 898                            I40E_GLPRT_GORCL(hw->port),
 899                            pf->stat_offsets_loaded,
 900                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 901         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 902                            I40E_GLPRT_GOTCL(hw->port),
 903                            pf->stat_offsets_loaded,
 904                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 905         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 906                            pf->stat_offsets_loaded,
 907                            &osd->eth.rx_discards,
 908                            &nsd->eth.rx_discards);
 909         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 910                            I40E_GLPRT_UPRCL(hw->port),
 911                            pf->stat_offsets_loaded,
 912                            &osd->eth.rx_unicast,
 913                            &nsd->eth.rx_unicast);
 914         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 915                            I40E_GLPRT_MPRCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.rx_multicast,
 918                            &nsd->eth.rx_multicast);
 919         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 920                            I40E_GLPRT_BPRCL(hw->port),
 921                            pf->stat_offsets_loaded,
 922                            &osd->eth.rx_broadcast,
 923                            &nsd->eth.rx_broadcast);
 924         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 925                            I40E_GLPRT_UPTCL(hw->port),
 926                            pf->stat_offsets_loaded,
 927                            &osd->eth.tx_unicast,
 928                            &nsd->eth.tx_unicast);
 929         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 930                            I40E_GLPRT_MPTCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.tx_multicast,
 933                            &nsd->eth.tx_multicast);
 934         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 935                            I40E_GLPRT_BPTCL(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.tx_broadcast,
 938                            &nsd->eth.tx_broadcast);
 939
 940         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->tx_dropped_link_down,
 943                            &nsd->tx_dropped_link_down);
 944
 945         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->crc_errors, &nsd->crc_errors);
 948
 949         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 950                            pf->stat_offsets_loaded,
 951                            &osd->illegal_bytes, &nsd->illegal_bytes);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->mac_local_faults,
 956                            &nsd->mac_local_faults);
 957         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->mac_remote_faults,
 960                            &nsd->mac_remote_faults);
 961
 962         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->rx_length_errors,
 965                            &nsd->rx_length_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->link_xon_rx, &nsd->link_xon_rx);
 970         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->link_xon_tx, &nsd->link_xon_tx);
 973         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 976         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 977                            pf->stat_offsets_loaded,
 978                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 979
 980         for (i = 0; i < 8; i++) {
 981                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 982                                    pf->stat_offsets_loaded,
 983                                    &osd->priority_xoff_rx[i],
 984                                    &nsd->priority_xoff_rx[i]);
 985                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 986                                    pf->stat_offsets_loaded,
 987                                    &osd->priority_xon_rx[i],
 988                                    &nsd->priority_xon_rx[i]);
 989                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 990                                    pf->stat_offsets_loaded,
 991                                    &osd->priority_xon_tx[i],
 992                                    &nsd->priority_xon_tx[i]);
 993                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 994                                    pf->stat_offsets_loaded,
 995                                    &osd->priority_xoff_tx[i],
 996                                    &nsd->priority_xoff_tx[i]);
 997                 i40e_stat_update32(hw,
 998                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 999                                    pf->stat_offsets_loaded,
1000                                    &osd->priority_xon_2_xoff[i],
1001                                    &nsd->priority_xon_2_xoff[i]);
1002         }
1003
1004         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1005                            I40E_GLPRT_PRC64L(hw->port),
1006                            pf->stat_offsets_loaded,
1007                            &osd->rx_size_64, &nsd->rx_size_64);
1008         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1009                            I40E_GLPRT_PRC127L(hw->port),
1010                            pf->stat_offsets_loaded,
1011                            &osd->rx_size_127, &nsd->rx_size_127);
1012         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1013                            I40E_GLPRT_PRC255L(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->rx_size_255, &nsd->rx_size_255);
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1017                            I40E_GLPRT_PRC511L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_511, &nsd->rx_size_511);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1021                            I40E_GLPRT_PRC1023L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_1023, &nsd->rx_size_1023);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1025                            I40E_GLPRT_PRC1522L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_1522, &nsd->rx_size_1522);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1029                            I40E_GLPRT_PRC9522L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_big, &nsd->rx_size_big);
1032
1033         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1034                            I40E_GLPRT_PTC64L(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->tx_size_64, &nsd->tx_size_64);
1037         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1038                            I40E_GLPRT_PTC127L(hw->port),
1039                            pf->stat_offsets_loaded,
1040                            &osd->tx_size_127, &nsd->tx_size_127);
1041         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1042                            I40E_GLPRT_PTC255L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->tx_size_255, &nsd->tx_size_255);
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1046                            I40E_GLPRT_PTC511L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_511, &nsd->tx_size_511);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1050                            I40E_GLPRT_PTC1023L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_1023, &nsd->tx_size_1023);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1054                            I40E_GLPRT_PTC1522L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_1522, &nsd->tx_size_1522);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1058                            I40E_GLPRT_PTC9522L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_big, &nsd->tx_size_big);
1061
1062         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->rx_undersize, &nsd->rx_undersize);
1065         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->rx_fragments, &nsd->rx_fragments);
1068         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1069                            pf->stat_offsets_loaded,
1070                            &osd->rx_oversize, &nsd->rx_oversize);
1071         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->rx_jabber, &nsd->rx_jabber);
1074
1075         /* FDIR stats */
1076         i40e_stat_update32(hw,
1077                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1078                            pf->stat_offsets_loaded,
1079                            &osd->fd_atr_match, &nsd->fd_atr_match);
1080         i40e_stat_update32(hw,
1081                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1082                            pf->stat_offsets_loaded,
1083                            &osd->fd_sb_match, &nsd->fd_sb_match);
1084         i40e_stat_update32(hw,
1085                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1086                       pf->stat_offsets_loaded,
1087                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1088
1089         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1090         nsd->tx_lpi_status =
1091                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1092                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1093         nsd->rx_lpi_status =
1094                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1095                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1096         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1097                            pf->stat_offsets_loaded,
1098                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1099         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1100                            pf->stat_offsets_loaded,
1101                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1102
1103         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1104             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1105                 nsd->fd_sb_status = true;
1106         else
1107                 nsd->fd_sb_status = false;
1108
1109         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1110             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1111                 nsd->fd_atr_status = true;
1112         else
1113                 nsd->fd_atr_status = false;
1114
1115         pf->stat_offsets_loaded = true;
1116 }
1117
1118 /**
1119  * i40e_update_stats - Update the various statistics counters.
1120  * @vsi: the VSI to be updated
1121  *
1122  * Update the various stats for this VSI and its related entities.
1123  **/
1124 void i40e_update_stats(struct i40e_vsi *vsi)
1125 {
1126         struct i40e_pf *pf = vsi->back;
1127
1128         if (vsi == pf->vsi[pf->lan_vsi])
1129                 i40e_update_pf_stats(pf);
1130
1131         i40e_update_vsi_stats(vsi);
1132 #ifdef I40E_FCOE
1133         i40e_update_fcoe_stats(vsi);
1134 #endif
1135 }
1136
1137 /**
1138  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1139  * @vsi: the VSI to be searched
1140  * @macaddr: the MAC address
1141  * @vlan: the vlan
1142  *
1143  * Returns ptr to the filter object or NULL
1144  **/
1145 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1146                                                 const u8 *macaddr, s16 vlan)
1147 {
1148         struct i40e_mac_filter *f;
1149         u64 key;
1150
1151         if (!vsi || !macaddr)
1152                 return NULL;
1153
1154         key = i40e_addr_to_hkey(macaddr);
1155         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1156                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1157                     (vlan == f->vlan))
1158                         return f;
1159         }
1160         return NULL;
1161 }
1162
1163 /**
1164  * i40e_find_mac - Find a mac addr in the macvlan filters list
1165  * @vsi: the VSI to be searched
1166  * @macaddr: the MAC address we are searching for
1167  *
1168  * Returns the first filter with the provided MAC address or NULL if
1169  * MAC address was not found
1170  **/
1171 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1172 {
1173         struct i40e_mac_filter *f;
1174         u64 key;
1175
1176         if (!vsi || !macaddr)
1177                 return NULL;
1178
1179         key = i40e_addr_to_hkey(macaddr);
1180         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1181                 if ((ether_addr_equal(macaddr, f->macaddr)))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         /* If we have a PVID, always operate in VLAN mode */
1196         if (vsi->info.pvid)
1197                 return true;
1198
1199         /* We need to operate in VLAN mode whenever we have any filters with
1200          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1201          * time, incurring search cost repeatedly. However, we can notice two
1202          * things:
1203          *
1204          * 1) the only place where we can gain a VLAN filter is in
1205          *    i40e_add_filter.
1206          *
1207          * 2) the only place where filters are actually removed is in
1208          *    i40e_sync_filters_subtask.
1209          *
1210          * Thus, we can simply use a boolean value, has_vlan_filters which we
1211          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1212          * we have to perform the full search after deleting filters in
1213          * i40e_sync_filters_subtask, but we already have to search
1214          * filters here and can perform the check at the same time. This
1215          * results in avoiding embedding a loop for VLAN mode inside another
1216          * loop over all the filters, and should maintain correctness as noted
1217          * above.
1218          */
1219         return vsi->has_vlan_filter;
1220 }
1221
1222 /**
1223  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1224  * @vsi: the VSI to configure
1225  * @tmp_add_list: list of filters ready to be added
1226  * @tmp_del_list: list of filters ready to be deleted
1227  * @vlan_filters: the number of active VLAN filters
1228  *
1229  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1230  * behave as expected. If we have any active VLAN filters remaining or about
1231  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1232  * so that they only match against untagged traffic. If we no longer have any
1233  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1234  * so that they match against both tagged and untagged traffic. In this way,
1235  * we ensure that we correctly receive the desired traffic. This ensures that
1236  * when we have an active VLAN we will receive only untagged traffic and
1237  * traffic matching active VLANs. If we have no active VLANs then we will
1238  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1239  *
1240  * Finally, in a similar fashion, this function also corrects filters when
1241  * there is an active PVID assigned to this VSI.
1242  *
1243  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1244  *
1245  * This function is only expected to be called from within
1246  * i40e_sync_vsi_filters.
1247  *
1248  * NOTE: This function expects to be called while under the
1249  * mac_filter_hash_lock
1250  */
1251 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1252                                          struct hlist_head *tmp_add_list,
1253                                          struct hlist_head *tmp_del_list,
1254                                          int vlan_filters)
1255 {
1256         s16 pvid = le16_to_cpu(vsi->info.pvid);
1257         struct i40e_mac_filter *f, *add_head;
1258         struct i40e_new_mac_filter *new;
1259         struct hlist_node *h;
1260         int bkt, new_vlan;
1261
1262         /* To determine if a particular filter needs to be replaced we
1263          * have the three following conditions:
1264          *
1265          * a) if we have a PVID assigned, then all filters which are
1266          *    not marked as VLAN=PVID must be replaced with filters that
1267          *    are.
1268          * b) otherwise, if we have any active VLANS, all filters
1269          *    which are marked as VLAN=-1 must be replaced with
1270          *    filters marked as VLAN=0
1271          * c) finally, if we do not have any active VLANS, all filters
1272          *    which are marked as VLAN=0 must be replaced with filters
1273          *    marked as VLAN=-1
1274          */
1275
1276         /* Update the filters about to be added in place */
1277         hlist_for_each_entry(new, tmp_add_list, hlist) {
1278                 if (pvid && new->f->vlan != pvid)
1279                         new->f->vlan = pvid;
1280                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1281                         new->f->vlan = 0;
1282                 else if (!vlan_filters && new->f->vlan == 0)
1283                         new->f->vlan = I40E_VLAN_ANY;
1284         }
1285
1286         /* Update the remaining active filters */
1287         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1288                 /* Combine the checks for whether a filter needs to be changed
1289                  * and then determine the new VLAN inside the if block, in
1290                  * order to avoid duplicating code for adding the new filter
1291                  * then deleting the old filter.
1292                  */
1293                 if ((pvid && f->vlan != pvid) ||
1294                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1295                     (!vlan_filters && f->vlan == 0)) {
1296                         /* Determine the new vlan we will be adding */
1297                         if (pvid)
1298                                 new_vlan = pvid;
1299                         else if (vlan_filters)
1300                                 new_vlan = 0;
1301                         else
1302                                 new_vlan = I40E_VLAN_ANY;
1303
1304                         /* Create the new filter */
1305                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1306                         if (!add_head)
1307                                 return -ENOMEM;
1308
1309                         /* Create a temporary i40e_new_mac_filter */
1310                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1311                         if (!new)
1312                                 return -ENOMEM;
1313
1314                         new->f = add_head;
1315                         new->state = add_head->state;
1316
1317                         /* Add the new filter to the tmp list */
1318                         hlist_add_head(&new->hlist, tmp_add_list);
1319
1320                         /* Put the original filter into the delete list */
1321                         f->state = I40E_FILTER_REMOVE;
1322                         hash_del(&f->hlist);
1323                         hlist_add_head(&f->hlist, tmp_del_list);
1324                 }
1325         }
1326
1327         vsi->has_vlan_filter = !!vlan_filters;
1328
1329         return 0;
1330 }
1331
1332 /**
1333  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1334  * @vsi: the PF Main VSI - inappropriate for any other VSI
1335  * @macaddr: the MAC address
1336  *
1337  * Remove whatever filter the firmware set up so the driver can manage
1338  * its own filtering intelligently.
1339  **/
1340 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1341 {
1342         struct i40e_aqc_remove_macvlan_element_data element;
1343         struct i40e_pf *pf = vsi->back;
1344
1345         /* Only appropriate for the PF main VSI */
1346         if (vsi->type != I40E_VSI_MAIN)
1347                 return;
1348
1349         memset(&element, 0, sizeof(element));
1350         ether_addr_copy(element.mac_addr, macaddr);
1351         element.vlan_tag = 0;
1352         /* Ignore error returns, some firmware does it this way... */
1353         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1354         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1355
1356         memset(&element, 0, sizeof(element));
1357         ether_addr_copy(element.mac_addr, macaddr);
1358         element.vlan_tag = 0;
1359         /* ...and some firmware does it this way. */
1360         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1361                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1362         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1363 }
1364
1365 /**
1366  * i40e_add_filter - Add a mac/vlan filter to the VSI
1367  * @vsi: the VSI to be searched
1368  * @macaddr: the MAC address
1369  * @vlan: the vlan
1370  *
1371  * Returns ptr to the filter object or NULL when no memory available.
1372  *
1373  * NOTE: This function is expected to be called with mac_filter_hash_lock
1374  * being held.
1375  **/
1376 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1377                                         const u8 *macaddr, s16 vlan)
1378 {
1379         struct i40e_mac_filter *f;
1380         u64 key;
1381
1382         if (!vsi || !macaddr)
1383                 return NULL;
1384
1385         f = i40e_find_filter(vsi, macaddr, vlan);
1386         if (!f) {
1387                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1388                 if (!f)
1389                         return NULL;
1390
1391                 /* Update the boolean indicating if we need to function in
1392                  * VLAN mode.
1393                  */
1394                 if (vlan >= 0)
1395                         vsi->has_vlan_filter = true;
1396
1397                 ether_addr_copy(f->macaddr, macaddr);
1398                 f->vlan = vlan;
1399                 /* If we're in overflow promisc mode, set the state directly
1400                  * to failed, so we don't bother to try sending the filter
1401                  * to the hardware.
1402                  */
1403                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1404                         f->state = I40E_FILTER_FAILED;
1405                 else
1406                         f->state = I40E_FILTER_NEW;
1407                 INIT_HLIST_NODE(&f->hlist);
1408
1409                 key = i40e_addr_to_hkey(macaddr);
1410                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1411
1412                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1413                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1414         }
1415
1416         /* If we're asked to add a filter that has been marked for removal, it
1417          * is safe to simply restore it to active state. __i40e_del_filter
1418          * will have simply deleted any filters which were previously marked
1419          * NEW or FAILED, so if it is currently marked REMOVE it must have
1420          * previously been ACTIVE. Since we haven't yet run the sync filters
1421          * task, just restore this filter to the ACTIVE state so that the
1422          * sync task leaves it in place
1423          */
1424         if (f->state == I40E_FILTER_REMOVE)
1425                 f->state = I40E_FILTER_ACTIVE;
1426
1427         return f;
1428 }
1429
1430 /**
1431  * __i40e_del_filter - Remove a specific filter from the VSI
1432  * @vsi: VSI to remove from
1433  * @f: the filter to remove from the list
1434  *
1435  * This function should be called instead of i40e_del_filter only if you know
1436  * the exact filter you will remove already, such as via i40e_find_filter or
1437  * i40e_find_mac.
1438  *
1439  * NOTE: This function is expected to be called with mac_filter_hash_lock
1440  * being held.
1441  * ANOTHER NOTE: This function MUST be called from within the context of
1442  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1443  * instead of list_for_each_entry().
1444  **/
1445 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1446 {
1447         if (!f)
1448                 return;
1449
1450         /* If the filter was never added to firmware then we can just delete it
1451          * directly and we don't want to set the status to remove or else an
1452          * admin queue command will unnecessarily fire.
1453          */
1454         if ((f->state == I40E_FILTER_FAILED) ||
1455             (f->state == I40E_FILTER_NEW)) {
1456                 hash_del(&f->hlist);
1457                 kfree(f);
1458         } else {
1459                 f->state = I40E_FILTER_REMOVE;
1460         }
1461
1462         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1463         vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1464 }
1465
1466 /**
1467  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1468  * @vsi: the VSI to be searched
1469  * @macaddr: the MAC address
1470  * @vlan: the VLAN
1471  *
1472  * NOTE: This function is expected to be called with mac_filter_hash_lock
1473  * being held.
1474  * ANOTHER NOTE: This function MUST be called from within the context of
1475  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1476  * instead of list_for_each_entry().
1477  **/
1478 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1479 {
1480         struct i40e_mac_filter *f;
1481
1482         if (!vsi || !macaddr)
1483                 return;
1484
1485         f = i40e_find_filter(vsi, macaddr, vlan);
1486         __i40e_del_filter(vsi, f);
1487 }
1488
1489 /**
1490  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1491  * @vsi: the VSI to be searched
1492  * @macaddr: the mac address to be filtered
1493  *
1494  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1495  * go through all the macvlan filters and add a macvlan filter for each
1496  * unique vlan that already exists. If a PVID has been assigned, instead only
1497  * add the macaddr to that VLAN.
1498  *
1499  * Returns last filter added on success, else NULL
1500  **/
1501 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1502                                             const u8 *macaddr)
1503 {
1504         struct i40e_mac_filter *f, *add = NULL;
1505         struct hlist_node *h;
1506         int bkt;
1507
1508         if (vsi->info.pvid)
1509                 return i40e_add_filter(vsi, macaddr,
1510                                        le16_to_cpu(vsi->info.pvid));
1511
1512         if (!i40e_is_vsi_in_vlan(vsi))
1513                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1514
1515         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1516                 if (f->state == I40E_FILTER_REMOVE)
1517                         continue;
1518                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1519                 if (!add)
1520                         return NULL;
1521         }
1522
1523         return add;
1524 }
1525
1526 /**
1527  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1528  * @vsi: the VSI to be searched
1529  * @macaddr: the mac address to be removed
1530  *
1531  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1532  * associated with.
1533  *
1534  * Returns 0 for success, or error
1535  **/
1536 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1537 {
1538         struct i40e_mac_filter *f;
1539         struct hlist_node *h;
1540         bool found = false;
1541         int bkt;
1542
1543         WARN(!spin_is_locked(&vsi->mac_filter_hash_lock),
1544              "Missing mac_filter_hash_lock\n");
1545         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1546                 if (ether_addr_equal(macaddr, f->macaddr)) {
1547                         __i40e_del_filter(vsi, f);
1548                         found = true;
1549                 }
1550         }
1551
1552         if (found)
1553                 return 0;
1554         else
1555                 return -ENOENT;
1556 }
1557
1558 /**
1559  * i40e_set_mac - NDO callback to set mac address
1560  * @netdev: network interface device structure
1561  * @p: pointer to an address structure
1562  *
1563  * Returns 0 on success, negative on failure
1564  **/
1565 #ifdef I40E_FCOE
1566 int i40e_set_mac(struct net_device *netdev, void *p)
1567 #else
1568 static int i40e_set_mac(struct net_device *netdev, void *p)
1569 #endif
1570 {
1571         struct i40e_netdev_priv *np = netdev_priv(netdev);
1572         struct i40e_vsi *vsi = np->vsi;
1573         struct i40e_pf *pf = vsi->back;
1574         struct i40e_hw *hw = &pf->hw;
1575         struct sockaddr *addr = p;
1576
1577         if (!is_valid_ether_addr(addr->sa_data))
1578                 return -EADDRNOTAVAIL;
1579
1580         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1581                 netdev_info(netdev, "already using mac address %pM\n",
1582                             addr->sa_data);
1583                 return 0;
1584         }
1585
1586         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1587             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1588                 return -EADDRNOTAVAIL;
1589
1590         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1591                 netdev_info(netdev, "returning to hw mac address %pM\n",
1592                             hw->mac.addr);
1593         else
1594                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1595
1596         spin_lock_bh(&vsi->mac_filter_hash_lock);
1597         i40e_del_mac_filter(vsi, netdev->dev_addr);
1598         i40e_add_mac_filter(vsi, addr->sa_data);
1599         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1600         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1601         if (vsi->type == I40E_VSI_MAIN) {
1602                 i40e_status ret;
1603
1604                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1605                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1606                                                 addr->sa_data, NULL);
1607                 if (ret)
1608                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1609                                     i40e_stat_str(hw, ret),
1610                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1611         }
1612
1613         /* schedule our worker thread which will take care of
1614          * applying the new filter changes
1615          */
1616         i40e_service_event_schedule(vsi->back);
1617         return 0;
1618 }
1619
1620 /**
1621  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1622  * @vsi: the VSI being setup
1623  * @ctxt: VSI context structure
1624  * @enabled_tc: Enabled TCs bitmap
1625  * @is_add: True if called before Add VSI
1626  *
1627  * Setup VSI queue mapping for enabled traffic classes.
1628  **/
1629 #ifdef I40E_FCOE
1630 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1631                               struct i40e_vsi_context *ctxt,
1632                               u8 enabled_tc,
1633                               bool is_add)
1634 #else
1635 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1636                                      struct i40e_vsi_context *ctxt,
1637                                      u8 enabled_tc,
1638                                      bool is_add)
1639 #endif
1640 {
1641         struct i40e_pf *pf = vsi->back;
1642         u16 sections = 0;
1643         u8 netdev_tc = 0;
1644         u16 numtc = 0;
1645         u16 qcount;
1646         u8 offset;
1647         u16 qmap;
1648         int i;
1649         u16 num_tc_qps = 0;
1650
1651         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1652         offset = 0;
1653
1654         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1655                 /* Find numtc from enabled TC bitmap */
1656                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1657                         if (enabled_tc & BIT(i)) /* TC is enabled */
1658                                 numtc++;
1659                 }
1660                 if (!numtc) {
1661                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1662                         numtc = 1;
1663                 }
1664         } else {
1665                 /* At least TC0 is enabled in case of non-DCB case */
1666                 numtc = 1;
1667         }
1668
1669         vsi->tc_config.numtc = numtc;
1670         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1671         /* Number of queues per enabled TC */
1672         qcount = vsi->alloc_queue_pairs;
1673
1674         num_tc_qps = qcount / numtc;
1675         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1676
1677         /* Setup queue offset/count for all TCs for given VSI */
1678         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1679                 /* See if the given TC is enabled for the given VSI */
1680                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1681                         /* TC is enabled */
1682                         int pow, num_qps;
1683
1684                         switch (vsi->type) {
1685                         case I40E_VSI_MAIN:
1686                                 qcount = min_t(int, pf->alloc_rss_size,
1687                                                num_tc_qps);
1688                                 break;
1689 #ifdef I40E_FCOE
1690                         case I40E_VSI_FCOE:
1691                                 qcount = num_tc_qps;
1692                                 break;
1693 #endif
1694                         case I40E_VSI_FDIR:
1695                         case I40E_VSI_SRIOV:
1696                         case I40E_VSI_VMDQ2:
1697                         default:
1698                                 qcount = num_tc_qps;
1699                                 WARN_ON(i != 0);
1700                                 break;
1701                         }
1702                         vsi->tc_config.tc_info[i].qoffset = offset;
1703                         vsi->tc_config.tc_info[i].qcount = qcount;
1704
1705                         /* find the next higher power-of-2 of num queue pairs */
1706                         num_qps = qcount;
1707                         pow = 0;
1708                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1709                                 pow++;
1710                                 num_qps >>= 1;
1711                         }
1712
1713                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1714                         qmap =
1715                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1716                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1717
1718                         offset += qcount;
1719                 } else {
1720                         /* TC is not enabled so set the offset to
1721                          * default queue and allocate one queue
1722                          * for the given TC.
1723                          */
1724                         vsi->tc_config.tc_info[i].qoffset = 0;
1725                         vsi->tc_config.tc_info[i].qcount = 1;
1726                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1727
1728                         qmap = 0;
1729                 }
1730                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1731         }
1732
1733         /* Set actual Tx/Rx queue pairs */
1734         vsi->num_queue_pairs = offset;
1735         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1736                 if (vsi->req_queue_pairs > 0)
1737                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1738                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1739                         vsi->num_queue_pairs = pf->num_lan_msix;
1740         }
1741
1742         /* Scheduler section valid can only be set for ADD VSI */
1743         if (is_add) {
1744                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1745
1746                 ctxt->info.up_enable_bits = enabled_tc;
1747         }
1748         if (vsi->type == I40E_VSI_SRIOV) {
1749                 ctxt->info.mapping_flags |=
1750                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1751                 for (i = 0; i < vsi->num_queue_pairs; i++)
1752                         ctxt->info.queue_mapping[i] =
1753                                                cpu_to_le16(vsi->base_queue + i);
1754         } else {
1755                 ctxt->info.mapping_flags |=
1756                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1757                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1758         }
1759         ctxt->info.valid_sections |= cpu_to_le16(sections);
1760 }
1761
1762 /**
1763  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
1764  * @netdev: the netdevice
1765  * @addr: address to add
1766  *
1767  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
1768  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1769  */
1770 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
1771 {
1772         struct i40e_netdev_priv *np = netdev_priv(netdev);
1773         struct i40e_vsi *vsi = np->vsi;
1774
1775         if (i40e_add_mac_filter(vsi, addr))
1776                 return 0;
1777         else
1778                 return -ENOMEM;
1779 }
1780
1781 /**
1782  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
1783  * @netdev: the netdevice
1784  * @addr: address to add
1785  *
1786  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
1787  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1788  */
1789 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
1790 {
1791         struct i40e_netdev_priv *np = netdev_priv(netdev);
1792         struct i40e_vsi *vsi = np->vsi;
1793
1794         i40e_del_mac_filter(vsi, addr);
1795
1796         return 0;
1797 }
1798
1799 /**
1800  * i40e_set_rx_mode - NDO callback to set the netdev filters
1801  * @netdev: network interface device structure
1802  **/
1803 #ifdef I40E_FCOE
1804 void i40e_set_rx_mode(struct net_device *netdev)
1805 #else
1806 static void i40e_set_rx_mode(struct net_device *netdev)
1807 #endif
1808 {
1809         struct i40e_netdev_priv *np = netdev_priv(netdev);
1810         struct i40e_vsi *vsi = np->vsi;
1811
1812         spin_lock_bh(&vsi->mac_filter_hash_lock);
1813
1814         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1815         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1816
1817         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1818
1819         /* check for other flag changes */
1820         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1821                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1822                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1823         }
1824
1825         /* schedule our worker thread which will take care of
1826          * applying the new filter changes
1827          */
1828         i40e_service_event_schedule(vsi->back);
1829 }
1830
1831 /**
1832  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1833  * @vsi: Pointer to VSI struct
1834  * @from: Pointer to list which contains MAC filter entries - changes to
1835  *        those entries needs to be undone.
1836  *
1837  * MAC filter entries from this list were slated for deletion.
1838  **/
1839 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1840                                          struct hlist_head *from)
1841 {
1842         struct i40e_mac_filter *f;
1843         struct hlist_node *h;
1844
1845         hlist_for_each_entry_safe(f, h, from, hlist) {
1846                 u64 key = i40e_addr_to_hkey(f->macaddr);
1847
1848                 /* Move the element back into MAC filter list*/
1849                 hlist_del(&f->hlist);
1850                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1851         }
1852 }
1853
1854 /**
1855  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1856  * @vsi: Pointer to vsi struct
1857  * @from: Pointer to list which contains MAC filter entries - changes to
1858  *        those entries needs to be undone.
1859  *
1860  * MAC filter entries from this list were slated for addition.
1861  **/
1862 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
1863                                          struct hlist_head *from)
1864 {
1865         struct i40e_new_mac_filter *new;
1866         struct hlist_node *h;
1867
1868         hlist_for_each_entry_safe(new, h, from, hlist) {
1869                 /* We can simply free the wrapper structure */
1870                 hlist_del(&new->hlist);
1871                 kfree(new);
1872         }
1873 }
1874
1875 /**
1876  * i40e_next_entry - Get the next non-broadcast filter from a list
1877  * @next: pointer to filter in list
1878  *
1879  * Returns the next non-broadcast filter in the list. Required so that we
1880  * ignore broadcast filters within the list, since these are not handled via
1881  * the normal firmware update path.
1882  */
1883 static
1884 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
1885 {
1886         while (next) {
1887                 next = hlist_entry(next->hlist.next,
1888                                    typeof(struct i40e_new_mac_filter),
1889                                    hlist);
1890
1891                 /* keep going if we found a broadcast filter */
1892                 if (next && is_broadcast_ether_addr(next->f->macaddr))
1893                         continue;
1894
1895                 break;
1896         }
1897
1898         return next;
1899 }
1900
1901 /**
1902  * i40e_update_filter_state - Update filter state based on return data
1903  * from firmware
1904  * @count: Number of filters added
1905  * @add_list: return data from fw
1906  * @head: pointer to first filter in current batch
1907  *
1908  * MAC filter entries from list were slated to be added to device. Returns
1909  * number of successful filters. Note that 0 does NOT mean success!
1910  **/
1911 static int
1912 i40e_update_filter_state(int count,
1913                          struct i40e_aqc_add_macvlan_element_data *add_list,
1914                          struct i40e_new_mac_filter *add_head)
1915 {
1916         int retval = 0;
1917         int i;
1918
1919         for (i = 0; i < count; i++) {
1920                 /* Always check status of each filter. We don't need to check
1921                  * the firmware return status because we pre-set the filter
1922                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
1923                  * request to the adminq. Thus, if it no longer matches then
1924                  * we know the filter is active.
1925                  */
1926                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
1927                         add_head->state = I40E_FILTER_FAILED;
1928                 } else {
1929                         add_head->state = I40E_FILTER_ACTIVE;
1930                         retval++;
1931                 }
1932
1933                 add_head = i40e_next_filter(add_head);
1934                 if (!add_head)
1935                         break;
1936         }
1937
1938         return retval;
1939 }
1940
1941 /**
1942  * i40e_aqc_del_filters - Request firmware to delete a set of filters
1943  * @vsi: ptr to the VSI
1944  * @vsi_name: name to display in messages
1945  * @list: the list of filters to send to firmware
1946  * @num_del: the number of filters to delete
1947  * @retval: Set to -EIO on failure to delete
1948  *
1949  * Send a request to firmware via AdminQ to delete a set of filters. Uses
1950  * *retval instead of a return value so that success does not force ret_val to
1951  * be set to 0. This ensures that a sequence of calls to this function
1952  * preserve the previous value of *retval on successful delete.
1953  */
1954 static
1955 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
1956                           struct i40e_aqc_remove_macvlan_element_data *list,
1957                           int num_del, int *retval)
1958 {
1959         struct i40e_hw *hw = &vsi->back->hw;
1960         i40e_status aq_ret;
1961         int aq_err;
1962
1963         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
1964         aq_err = hw->aq.asq_last_status;
1965
1966         /* Explicitly ignore and do not report when firmware returns ENOENT */
1967         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1968                 *retval = -EIO;
1969                 dev_info(&vsi->back->pdev->dev,
1970                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1971                          vsi_name, i40e_stat_str(hw, aq_ret),
1972                          i40e_aq_str(hw, aq_err));
1973         }
1974 }
1975
1976 /**
1977  * i40e_aqc_add_filters - Request firmware to add a set of filters
1978  * @vsi: ptr to the VSI
1979  * @vsi_name: name to display in messages
1980  * @list: the list of filters to send to firmware
1981  * @add_head: Position in the add hlist
1982  * @num_add: the number of filters to add
1983  * @promisc_change: set to true on exit if promiscuous mode was forced on
1984  *
1985  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
1986  * promisc_changed to true if the firmware has run out of space for more
1987  * filters.
1988  */
1989 static
1990 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
1991                           struct i40e_aqc_add_macvlan_element_data *list,
1992                           struct i40e_new_mac_filter *add_head,
1993                           int num_add, bool *promisc_changed)
1994 {
1995         struct i40e_hw *hw = &vsi->back->hw;
1996         int aq_err, fcnt;
1997
1998         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
1999         aq_err = hw->aq.asq_last_status;
2000         fcnt = i40e_update_filter_state(num_add, list, add_head);
2001
2002         if (fcnt != num_add) {
2003                 *promisc_changed = true;
2004                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2005                 dev_warn(&vsi->back->pdev->dev,
2006                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2007                          i40e_aq_str(hw, aq_err),
2008                          vsi_name);
2009         }
2010 }
2011
2012 /**
2013  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2014  * @vsi: pointer to the VSI
2015  * @f: filter data
2016  *
2017  * This function sets or clears the promiscuous broadcast flags for VLAN
2018  * filters in order to properly receive broadcast frames. Assumes that only
2019  * broadcast filters are passed.
2020  *
2021  * Returns status indicating success or failure;
2022  **/
2023 static i40e_status
2024 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2025                           struct i40e_mac_filter *f)
2026 {
2027         bool enable = f->state == I40E_FILTER_NEW;
2028         struct i40e_hw *hw = &vsi->back->hw;
2029         i40e_status aq_ret;
2030
2031         if (f->vlan == I40E_VLAN_ANY) {
2032                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2033                                                    vsi->seid,
2034                                                    enable,
2035                                                    NULL);
2036         } else {
2037                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2038                                                             vsi->seid,
2039                                                             enable,
2040                                                             f->vlan,
2041                                                             NULL);
2042         }
2043
2044         if (aq_ret)
2045                 dev_warn(&vsi->back->pdev->dev,
2046                          "Error %s setting broadcast promiscuous mode on %s\n",
2047                          i40e_aq_str(hw, hw->aq.asq_last_status),
2048                          vsi_name);
2049
2050         return aq_ret;
2051 }
2052
2053 /**
2054  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2055  * @vsi: ptr to the VSI
2056  *
2057  * Push any outstanding VSI filter changes through the AdminQ.
2058  *
2059  * Returns 0 or error value
2060  **/
2061 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2062 {
2063         struct hlist_head tmp_add_list, tmp_del_list;
2064         struct i40e_mac_filter *f;
2065         struct i40e_new_mac_filter *new, *add_head = NULL;
2066         struct i40e_hw *hw = &vsi->back->hw;
2067         unsigned int failed_filters = 0;
2068         unsigned int vlan_filters = 0;
2069         bool promisc_changed = false;
2070         char vsi_name[16] = "PF";
2071         int filter_list_len = 0;
2072         i40e_status aq_ret = 0;
2073         u32 changed_flags = 0;
2074         struct hlist_node *h;
2075         struct i40e_pf *pf;
2076         int num_add = 0;
2077         int num_del = 0;
2078         int retval = 0;
2079         u16 cmd_flags;
2080         int list_size;
2081         int bkt;
2082
2083         /* empty array typed pointers, kcalloc later */
2084         struct i40e_aqc_add_macvlan_element_data *add_list;
2085         struct i40e_aqc_remove_macvlan_element_data *del_list;
2086
2087         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
2088                 usleep_range(1000, 2000);
2089         pf = vsi->back;
2090
2091         if (vsi->netdev) {
2092                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2093                 vsi->current_netdev_flags = vsi->netdev->flags;
2094         }
2095
2096         INIT_HLIST_HEAD(&tmp_add_list);
2097         INIT_HLIST_HEAD(&tmp_del_list);
2098
2099         if (vsi->type == I40E_VSI_SRIOV)
2100                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2101         else if (vsi->type != I40E_VSI_MAIN)
2102                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2103
2104         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2105                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2106
2107                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2108                 /* Create a list of filters to delete. */
2109                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2110                         if (f->state == I40E_FILTER_REMOVE) {
2111                                 /* Move the element into temporary del_list */
2112                                 hash_del(&f->hlist);
2113                                 hlist_add_head(&f->hlist, &tmp_del_list);
2114
2115                                 /* Avoid counting removed filters */
2116                                 continue;
2117                         }
2118                         if (f->state == I40E_FILTER_NEW) {
2119                                 /* Create a temporary i40e_new_mac_filter */
2120                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2121                                 if (!new)
2122                                         goto err_no_memory_locked;
2123
2124                                 /* Store pointer to the real filter */
2125                                 new->f = f;
2126                                 new->state = f->state;
2127
2128                                 /* Add it to the hash list */
2129                                 hlist_add_head(&new->hlist, &tmp_add_list);
2130                         }
2131
2132                         /* Count the number of active (current and new) VLAN
2133                          * filters we have now. Does not count filters which
2134                          * are marked for deletion.
2135                          */
2136                         if (f->vlan > 0)
2137                                 vlan_filters++;
2138                 }
2139
2140                 retval = i40e_correct_mac_vlan_filters(vsi,
2141                                                        &tmp_add_list,
2142                                                        &tmp_del_list,
2143                                                        vlan_filters);
2144                 if (retval)
2145                         goto err_no_memory_locked;
2146
2147                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2148         }
2149
2150         /* Now process 'del_list' outside the lock */
2151         if (!hlist_empty(&tmp_del_list)) {
2152                 filter_list_len = hw->aq.asq_buf_size /
2153                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2154                 list_size = filter_list_len *
2155                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2156                 del_list = kzalloc(list_size, GFP_ATOMIC);
2157                 if (!del_list)
2158                         goto err_no_memory;
2159
2160                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2161                         cmd_flags = 0;
2162
2163                         /* handle broadcast filters by updating the broadcast
2164                          * promiscuous flag and release filter list.
2165                          */
2166                         if (is_broadcast_ether_addr(f->macaddr)) {
2167                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2168
2169                                 hlist_del(&f->hlist);
2170                                 kfree(f);
2171                                 continue;
2172                         }
2173
2174                         /* add to delete list */
2175                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2176                         if (f->vlan == I40E_VLAN_ANY) {
2177                                 del_list[num_del].vlan_tag = 0;
2178                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2179                         } else {
2180                                 del_list[num_del].vlan_tag =
2181                                         cpu_to_le16((u16)(f->vlan));
2182                         }
2183
2184                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2185                         del_list[num_del].flags = cmd_flags;
2186                         num_del++;
2187
2188                         /* flush a full buffer */
2189                         if (num_del == filter_list_len) {
2190                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2191                                                      num_del, &retval);
2192                                 memset(del_list, 0, list_size);
2193                                 num_del = 0;
2194                         }
2195                         /* Release memory for MAC filter entries which were
2196                          * synced up with HW.
2197                          */
2198                         hlist_del(&f->hlist);
2199                         kfree(f);
2200                 }
2201
2202                 if (num_del) {
2203                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2204                                              num_del, &retval);
2205                 }
2206
2207                 kfree(del_list);
2208                 del_list = NULL;
2209         }
2210
2211         if (!hlist_empty(&tmp_add_list)) {
2212                 /* Do all the adds now. */
2213                 filter_list_len = hw->aq.asq_buf_size /
2214                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2215                 list_size = filter_list_len *
2216                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2217                 add_list = kzalloc(list_size, GFP_ATOMIC);
2218                 if (!add_list)
2219                         goto err_no_memory;
2220
2221                 num_add = 0;
2222                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2223                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2224                                      &vsi->state)) {
2225                                 new->state = I40E_FILTER_FAILED;
2226                                 continue;
2227                         }
2228
2229                         /* handle broadcast filters by updating the broadcast
2230                          * promiscuous flag instead of adding a MAC filter.
2231                          */
2232                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2233                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2234                                                               new->f))
2235                                         new->state = I40E_FILTER_FAILED;
2236                                 else
2237                                         new->state = I40E_FILTER_ACTIVE;
2238                                 continue;
2239                         }
2240
2241                         /* add to add array */
2242                         if (num_add == 0)
2243                                 add_head = new;
2244                         cmd_flags = 0;
2245                         ether_addr_copy(add_list[num_add].mac_addr,
2246                                         new->f->macaddr);
2247                         if (new->f->vlan == I40E_VLAN_ANY) {
2248                                 add_list[num_add].vlan_tag = 0;
2249                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2250                         } else {
2251                                 add_list[num_add].vlan_tag =
2252                                         cpu_to_le16((u16)(new->f->vlan));
2253                         }
2254                         add_list[num_add].queue_number = 0;
2255                         /* set invalid match method for later detection */
2256                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2257                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2258                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2259                         num_add++;
2260
2261                         /* flush a full buffer */
2262                         if (num_add == filter_list_len) {
2263                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2264                                                      add_head, num_add,
2265                                                      &promisc_changed);
2266                                 memset(add_list, 0, list_size);
2267                                 num_add = 0;
2268                         }
2269                 }
2270                 if (num_add) {
2271                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2272                                              num_add, &promisc_changed);
2273                 }
2274                 /* Now move all of the filters from the temp add list back to
2275                  * the VSI's list.
2276                  */
2277                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2278                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2279                         /* Only update the state if we're still NEW */
2280                         if (new->f->state == I40E_FILTER_NEW)
2281                                 new->f->state = new->state;
2282                         hlist_del(&new->hlist);
2283                         kfree(new);
2284                 }
2285                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2286                 kfree(add_list);
2287                 add_list = NULL;
2288         }
2289
2290         /* Determine the number of active and failed filters. */
2291         spin_lock_bh(&vsi->mac_filter_hash_lock);
2292         vsi->active_filters = 0;
2293         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2294                 if (f->state == I40E_FILTER_ACTIVE)
2295                         vsi->active_filters++;
2296                 else if (f->state == I40E_FILTER_FAILED)
2297                         failed_filters++;
2298         }
2299         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2300
2301         /* If promiscuous mode has changed, we need to calculate a new
2302          * threshold for when we are safe to exit
2303          */
2304         if (promisc_changed)
2305                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2306
2307         /* Check if we are able to exit overflow promiscuous mode. We can
2308          * safely exit if we didn't just enter, we no longer have any failed
2309          * filters, and we have reduced filters below the threshold value.
2310          */
2311         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2312             !promisc_changed && !failed_filters &&
2313             (vsi->active_filters < vsi->promisc_threshold)) {
2314                 dev_info(&pf->pdev->dev,
2315                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2316                          vsi_name);
2317                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2318                 promisc_changed = true;
2319                 vsi->promisc_threshold = 0;
2320         }
2321
2322         /* if the VF is not trusted do not do promisc */
2323         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2324                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2325                 goto out;
2326         }
2327
2328         /* check for changes in promiscuous modes */
2329         if (changed_flags & IFF_ALLMULTI) {
2330                 bool cur_multipromisc;
2331
2332                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2333                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2334                                                                vsi->seid,
2335                                                                cur_multipromisc,
2336                                                                NULL);
2337                 if (aq_ret) {
2338                         retval = i40e_aq_rc_to_posix(aq_ret,
2339                                                      hw->aq.asq_last_status);
2340                         dev_info(&pf->pdev->dev,
2341                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2342                                  vsi_name,
2343                                  i40e_stat_str(hw, aq_ret),
2344                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2345                 }
2346         }
2347         if ((changed_flags & IFF_PROMISC) ||
2348             (promisc_changed &&
2349              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2350                 bool cur_promisc;
2351
2352                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2353                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2354                                         &vsi->state));
2355                 if ((vsi->type == I40E_VSI_MAIN) &&
2356                     (pf->lan_veb != I40E_NO_VEB) &&
2357                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2358                         /* set defport ON for Main VSI instead of true promisc
2359                          * this way we will get all unicast/multicast and VLAN
2360                          * promisc behavior but will not get VF or VMDq traffic
2361                          * replicated on the Main VSI.
2362                          */
2363                         if (pf->cur_promisc != cur_promisc) {
2364                                 pf->cur_promisc = cur_promisc;
2365                                 if (cur_promisc)
2366                                         aq_ret =
2367                                               i40e_aq_set_default_vsi(hw,
2368                                                                       vsi->seid,
2369                                                                       NULL);
2370                                 else
2371                                         aq_ret =
2372                                             i40e_aq_clear_default_vsi(hw,
2373                                                                       vsi->seid,
2374                                                                       NULL);
2375                                 if (aq_ret) {
2376                                         retval = i40e_aq_rc_to_posix(aq_ret,
2377                                                         hw->aq.asq_last_status);
2378                                         dev_info(&pf->pdev->dev,
2379                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2380                                                  vsi_name,
2381                                                  i40e_stat_str(hw, aq_ret),
2382                                                  i40e_aq_str(hw,
2383                                                      hw->aq.asq_last_status));
2384                                 }
2385                         }
2386                 } else {
2387                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2388                                                           hw,
2389                                                           vsi->seid,
2390                                                           cur_promisc, NULL,
2391                                                           true);
2392                         if (aq_ret) {
2393                                 retval =
2394                                 i40e_aq_rc_to_posix(aq_ret,
2395                                                     hw->aq.asq_last_status);
2396                                 dev_info(&pf->pdev->dev,
2397                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2398                                          vsi_name,
2399                                          i40e_stat_str(hw, aq_ret),
2400                                          i40e_aq_str(hw,
2401                                                      hw->aq.asq_last_status));
2402                         }
2403                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2404                                                           hw,
2405                                                           vsi->seid,
2406                                                           cur_promisc, NULL);
2407                         if (aq_ret) {
2408                                 retval =
2409                                 i40e_aq_rc_to_posix(aq_ret,
2410                                                     hw->aq.asq_last_status);
2411                                 dev_info(&pf->pdev->dev,
2412                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2413                                          vsi_name,
2414                                          i40e_stat_str(hw, aq_ret),
2415                                          i40e_aq_str(hw,
2416                                                      hw->aq.asq_last_status));
2417                         }
2418                 }
2419                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2420                                                    vsi->seid,
2421                                                    cur_promisc, NULL);
2422                 if (aq_ret) {
2423                         retval = i40e_aq_rc_to_posix(aq_ret,
2424                                                      pf->hw.aq.asq_last_status);
2425                         dev_info(&pf->pdev->dev,
2426                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2427                                          i40e_stat_str(hw, aq_ret),
2428                                          i40e_aq_str(hw,
2429                                                      hw->aq.asq_last_status));
2430                 }
2431         }
2432 out:
2433         /* if something went wrong then set the changed flag so we try again */
2434         if (retval)
2435                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2436
2437         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2438         return retval;
2439
2440 err_no_memory:
2441         /* Restore elements on the temporary add and delete lists */
2442         spin_lock_bh(&vsi->mac_filter_hash_lock);
2443 err_no_memory_locked:
2444         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2445         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2446         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2447
2448         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2449         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2450         return -ENOMEM;
2451 }
2452
2453 /**
2454  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2455  * @pf: board private structure
2456  **/
2457 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2458 {
2459         int v;
2460
2461         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2462                 return;
2463         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2464
2465         for (v = 0; v < pf->num_alloc_vsi; v++) {
2466                 if (pf->vsi[v] &&
2467                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2468                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2469
2470                         if (ret) {
2471                                 /* come back and try again later */
2472                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2473                                 break;
2474                         }
2475                 }
2476         }
2477 }
2478
2479 /**
2480  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2481  * @netdev: network interface device structure
2482  * @new_mtu: new value for maximum frame size
2483  *
2484  * Returns 0 on success, negative on failure
2485  **/
2486 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2487 {
2488         struct i40e_netdev_priv *np = netdev_priv(netdev);
2489         struct i40e_vsi *vsi = np->vsi;
2490
2491         netdev_info(netdev, "changing MTU from %d to %d\n",
2492                     netdev->mtu, new_mtu);
2493         netdev->mtu = new_mtu;
2494         if (netif_running(netdev))
2495                 i40e_vsi_reinit_locked(vsi);
2496         i40e_notify_client_of_l2_param_changes(vsi);
2497         return 0;
2498 }
2499
2500 /**
2501  * i40e_ioctl - Access the hwtstamp interface
2502  * @netdev: network interface device structure
2503  * @ifr: interface request data
2504  * @cmd: ioctl command
2505  **/
2506 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2507 {
2508         struct i40e_netdev_priv *np = netdev_priv(netdev);
2509         struct i40e_pf *pf = np->vsi->back;
2510
2511         switch (cmd) {
2512         case SIOCGHWTSTAMP:
2513                 return i40e_ptp_get_ts_config(pf, ifr);
2514         case SIOCSHWTSTAMP:
2515                 return i40e_ptp_set_ts_config(pf, ifr);
2516         default:
2517                 return -EOPNOTSUPP;
2518         }
2519 }
2520
2521 /**
2522  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2523  * @vsi: the vsi being adjusted
2524  **/
2525 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2526 {
2527         struct i40e_vsi_context ctxt;
2528         i40e_status ret;
2529
2530         if ((vsi->info.valid_sections &
2531              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2532             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2533                 return;  /* already enabled */
2534
2535         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2536         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2537                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2538
2539         ctxt.seid = vsi->seid;
2540         ctxt.info = vsi->info;
2541         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2542         if (ret) {
2543                 dev_info(&vsi->back->pdev->dev,
2544                          "update vlan stripping failed, err %s aq_err %s\n",
2545                          i40e_stat_str(&vsi->back->hw, ret),
2546                          i40e_aq_str(&vsi->back->hw,
2547                                      vsi->back->hw.aq.asq_last_status));
2548         }
2549 }
2550
2551 /**
2552  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2553  * @vsi: the vsi being adjusted
2554  **/
2555 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2556 {
2557         struct i40e_vsi_context ctxt;
2558         i40e_status ret;
2559
2560         if ((vsi->info.valid_sections &
2561              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2562             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2563              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2564                 return;  /* already disabled */
2565
2566         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2567         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2568                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2569
2570         ctxt.seid = vsi->seid;
2571         ctxt.info = vsi->info;
2572         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2573         if (ret) {
2574                 dev_info(&vsi->back->pdev->dev,
2575                          "update vlan stripping failed, err %s aq_err %s\n",
2576                          i40e_stat_str(&vsi->back->hw, ret),
2577                          i40e_aq_str(&vsi->back->hw,
2578                                      vsi->back->hw.aq.asq_last_status));
2579         }
2580 }
2581
2582 /**
2583  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2584  * @netdev: network interface to be adjusted
2585  * @features: netdev features to test if VLAN offload is enabled or not
2586  **/
2587 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2588 {
2589         struct i40e_netdev_priv *np = netdev_priv(netdev);
2590         struct i40e_vsi *vsi = np->vsi;
2591
2592         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2593                 i40e_vlan_stripping_enable(vsi);
2594         else
2595                 i40e_vlan_stripping_disable(vsi);
2596 }
2597
2598 /**
2599  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2600  * @vsi: the vsi being configured
2601  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2602  *
2603  * This is a helper function for adding a new MAC/VLAN filter with the
2604  * specified VLAN for each existing MAC address already in the hash table.
2605  * This function does *not* perform any accounting to update filters based on
2606  * VLAN mode.
2607  *
2608  * NOTE: this function expects to be called while under the
2609  * mac_filter_hash_lock
2610  **/
2611 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2612 {
2613         struct i40e_mac_filter *f, *add_f;
2614         struct hlist_node *h;
2615         int bkt;
2616
2617         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2618                 if (f->state == I40E_FILTER_REMOVE)
2619                         continue;
2620                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2621                 if (!add_f) {
2622                         dev_info(&vsi->back->pdev->dev,
2623                                  "Could not add vlan filter %d for %pM\n",
2624                                  vid, f->macaddr);
2625                         return -ENOMEM;
2626                 }
2627         }
2628
2629         return 0;
2630 }
2631
2632 /**
2633  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2634  * @vsi: the VSI being configured
2635  * @vid: VLAN id to be added
2636  **/
2637 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2638 {
2639         int err;
2640
2641         if (!vid || vsi->info.pvid)
2642                 return -EINVAL;
2643
2644         /* Locked once because all functions invoked below iterates list*/
2645         spin_lock_bh(&vsi->mac_filter_hash_lock);
2646         err = i40e_add_vlan_all_mac(vsi, vid);
2647         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2648         if (err)
2649                 return err;
2650
2651         /* schedule our worker thread which will take care of
2652          * applying the new filter changes
2653          */
2654         i40e_service_event_schedule(vsi->back);
2655         return 0;
2656 }
2657
2658 /**
2659  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2660  * @vsi: the vsi being configured
2661  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2662  *
2663  * This function should be used to remove all VLAN filters which match the
2664  * given VID. It does not schedule the service event and does not take the
2665  * mac_filter_hash_lock so it may be combined with other operations under
2666  * a single invocation of the mac_filter_hash_lock.
2667  *
2668  * NOTE: this function expects to be called while under the
2669  * mac_filter_hash_lock
2670  */
2671 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2672 {
2673         struct i40e_mac_filter *f;
2674         struct hlist_node *h;
2675         int bkt;
2676
2677         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2678                 if (f->vlan == vid)
2679                         __i40e_del_filter(vsi, f);
2680         }
2681 }
2682
2683 /**
2684  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
2685  * @vsi: the VSI being configured
2686  * @vid: VLAN id to be removed
2687  **/
2688 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
2689 {
2690         if (!vid || vsi->info.pvid)
2691                 return;
2692
2693         spin_lock_bh(&vsi->mac_filter_hash_lock);
2694         i40e_rm_vlan_all_mac(vsi, vid);
2695         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2696
2697         /* schedule our worker thread which will take care of
2698          * applying the new filter changes
2699          */
2700         i40e_service_event_schedule(vsi->back);
2701 }
2702
2703 /**
2704  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2705  * @netdev: network interface to be adjusted
2706  * @vid: vlan id to be added
2707  *
2708  * net_device_ops implementation for adding vlan ids
2709  **/
2710 #ifdef I40E_FCOE
2711 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2712                          __always_unused __be16 proto, u16 vid)
2713 #else
2714 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2715                                 __always_unused __be16 proto, u16 vid)
2716 #endif
2717 {
2718         struct i40e_netdev_priv *np = netdev_priv(netdev);
2719         struct i40e_vsi *vsi = np->vsi;
2720         int ret = 0;
2721
2722         if (vid >= VLAN_N_VID)
2723                 return -EINVAL;
2724
2725         /* If the network stack called us with vid = 0 then
2726          * it is asking to receive priority tagged packets with
2727          * vlan id 0.  Our HW receives them by default when configured
2728          * to receive untagged packets so there is no need to add an
2729          * extra filter for vlan 0 tagged packets.
2730          */
2731         if (vid)
2732                 ret = i40e_vsi_add_vlan(vsi, vid);
2733
2734         if (!ret)
2735                 set_bit(vid, vsi->active_vlans);
2736
2737         return ret;
2738 }
2739
2740 /**
2741  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2742  * @netdev: network interface to be adjusted
2743  * @vid: vlan id to be removed
2744  *
2745  * net_device_ops implementation for removing vlan ids
2746  **/
2747 #ifdef I40E_FCOE
2748 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2749                           __always_unused __be16 proto, u16 vid)
2750 #else
2751 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2752                                  __always_unused __be16 proto, u16 vid)
2753 #endif
2754 {
2755         struct i40e_netdev_priv *np = netdev_priv(netdev);
2756         struct i40e_vsi *vsi = np->vsi;
2757
2758         /* return code is ignored as there is nothing a user
2759          * can do about failure to remove and a log message was
2760          * already printed from the other function
2761          */
2762         i40e_vsi_kill_vlan(vsi, vid);
2763
2764         clear_bit(vid, vsi->active_vlans);
2765
2766         return 0;
2767 }
2768
2769 /**
2770  * i40e_macaddr_init - explicitly write the mac address filters
2771  *
2772  * @vsi: pointer to the vsi
2773  * @macaddr: the MAC address
2774  *
2775  * This is needed when the macaddr has been obtained by other
2776  * means than the default, e.g., from Open Firmware or IDPROM.
2777  * Returns 0 on success, negative on failure
2778  **/
2779 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2780 {
2781         int ret;
2782         struct i40e_aqc_add_macvlan_element_data element;
2783
2784         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2785                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2786                                         macaddr, NULL);
2787         if (ret) {
2788                 dev_info(&vsi->back->pdev->dev,
2789                          "Addr change for VSI failed: %d\n", ret);
2790                 return -EADDRNOTAVAIL;
2791         }
2792
2793         memset(&element, 0, sizeof(element));
2794         ether_addr_copy(element.mac_addr, macaddr);
2795         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2796         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2797         if (ret) {
2798                 dev_info(&vsi->back->pdev->dev,
2799                          "add filter failed err %s aq_err %s\n",
2800                          i40e_stat_str(&vsi->back->hw, ret),
2801                          i40e_aq_str(&vsi->back->hw,
2802                                      vsi->back->hw.aq.asq_last_status));
2803         }
2804         return ret;
2805 }
2806
2807 /**
2808  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2809  * @vsi: the vsi being brought back up
2810  **/
2811 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2812 {
2813         u16 vid;
2814
2815         if (!vsi->netdev)
2816                 return;
2817
2818         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2819
2820         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2821                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2822                                      vid);
2823 }
2824
2825 /**
2826  * i40e_vsi_add_pvid - Add pvid for the VSI
2827  * @vsi: the vsi being adjusted
2828  * @vid: the vlan id to set as a PVID
2829  **/
2830 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2831 {
2832         struct i40e_vsi_context ctxt;
2833         i40e_status ret;
2834
2835         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2836         vsi->info.pvid = cpu_to_le16(vid);
2837         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2838                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2839                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2840
2841         ctxt.seid = vsi->seid;
2842         ctxt.info = vsi->info;
2843         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2844         if (ret) {
2845                 dev_info(&vsi->back->pdev->dev,
2846                          "add pvid failed, err %s aq_err %s\n",
2847                          i40e_stat_str(&vsi->back->hw, ret),
2848                          i40e_aq_str(&vsi->back->hw,
2849                                      vsi->back->hw.aq.asq_last_status));
2850                 return -ENOENT;
2851         }
2852
2853         return 0;
2854 }
2855
2856 /**
2857  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2858  * @vsi: the vsi being adjusted
2859  *
2860  * Just use the vlan_rx_register() service to put it back to normal
2861  **/
2862 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2863 {
2864         i40e_vlan_stripping_disable(vsi);
2865
2866         vsi->info.pvid = 0;
2867 }
2868
2869 /**
2870  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2871  * @vsi: ptr to the VSI
2872  *
2873  * If this function returns with an error, then it's possible one or
2874  * more of the rings is populated (while the rest are not).  It is the
2875  * callers duty to clean those orphaned rings.
2876  *
2877  * Return 0 on success, negative on failure
2878  **/
2879 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2880 {
2881         int i, err = 0;
2882
2883         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2884                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2885
2886         return err;
2887 }
2888
2889 /**
2890  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2891  * @vsi: ptr to the VSI
2892  *
2893  * Free VSI's transmit software resources
2894  **/
2895 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2896 {
2897         int i;
2898
2899         if (!vsi->tx_rings)
2900                 return;
2901
2902         for (i = 0; i < vsi->num_queue_pairs; i++)
2903                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2904                         i40e_free_tx_resources(vsi->tx_rings[i]);
2905 }
2906
2907 /**
2908  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2909  * @vsi: ptr to the VSI
2910  *
2911  * If this function returns with an error, then it's possible one or
2912  * more of the rings is populated (while the rest are not).  It is the
2913  * callers duty to clean those orphaned rings.
2914  *
2915  * Return 0 on success, negative on failure
2916  **/
2917 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2918 {
2919         int i, err = 0;
2920
2921         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2922                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2923 #ifdef I40E_FCOE
2924         i40e_fcoe_setup_ddp_resources(vsi);
2925 #endif
2926         return err;
2927 }
2928
2929 /**
2930  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2931  * @vsi: ptr to the VSI
2932  *
2933  * Free all receive software resources
2934  **/
2935 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2936 {
2937         int i;
2938
2939         if (!vsi->rx_rings)
2940                 return;
2941
2942         for (i = 0; i < vsi->num_queue_pairs; i++)
2943                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2944                         i40e_free_rx_resources(vsi->rx_rings[i]);
2945 #ifdef I40E_FCOE
2946         i40e_fcoe_free_ddp_resources(vsi);
2947 #endif
2948 }
2949
2950 /**
2951  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2952  * @ring: The Tx ring to configure
2953  *
2954  * This enables/disables XPS for a given Tx descriptor ring
2955  * based on the TCs enabled for the VSI that ring belongs to.
2956  **/
2957 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2958 {
2959         struct i40e_vsi *vsi = ring->vsi;
2960         cpumask_var_t mask;
2961
2962         if (!ring->q_vector || !ring->netdev)
2963                 return;
2964
2965         /* Single TC mode enable XPS */
2966         if (vsi->tc_config.numtc <= 1) {
2967                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2968                         netif_set_xps_queue(ring->netdev,
2969                                             &ring->q_vector->affinity_mask,
2970                                             ring->queue_index);
2971         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2972                 /* Disable XPS to allow selection based on TC */
2973                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2974                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2975                 free_cpumask_var(mask);
2976         }
2977
2978         /* schedule our worker thread which will take care of
2979          * applying the new filter changes
2980          */
2981         i40e_service_event_schedule(vsi->back);
2982 }
2983
2984 /**
2985  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2986  * @ring: The Tx ring to configure
2987  *
2988  * Configure the Tx descriptor ring in the HMC context.
2989  **/
2990 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2991 {
2992         struct i40e_vsi *vsi = ring->vsi;
2993         u16 pf_q = vsi->base_queue + ring->queue_index;
2994         struct i40e_hw *hw = &vsi->back->hw;
2995         struct i40e_hmc_obj_txq tx_ctx;
2996         i40e_status err = 0;
2997         u32 qtx_ctl = 0;
2998
2999         /* some ATR related tx ring init */
3000         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3001                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3002                 ring->atr_count = 0;
3003         } else {
3004                 ring->atr_sample_rate = 0;
3005         }
3006
3007         /* configure XPS */
3008         i40e_config_xps_tx_ring(ring);
3009
3010         /* clear the context structure first */
3011         memset(&tx_ctx, 0, sizeof(tx_ctx));
3012
3013         tx_ctx.new_context = 1;
3014         tx_ctx.base = (ring->dma / 128);
3015         tx_ctx.qlen = ring->count;
3016         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3017                                                I40E_FLAG_FD_ATR_ENABLED));
3018 #ifdef I40E_FCOE
3019         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
3020 #endif
3021         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3022         /* FDIR VSI tx ring can still use RS bit and writebacks */
3023         if (vsi->type != I40E_VSI_FDIR)
3024                 tx_ctx.head_wb_ena = 1;
3025         tx_ctx.head_wb_addr = ring->dma +
3026                               (ring->count * sizeof(struct i40e_tx_desc));
3027
3028         /* As part of VSI creation/update, FW allocates certain
3029          * Tx arbitration queue sets for each TC enabled for
3030          * the VSI. The FW returns the handles to these queue
3031          * sets as part of the response buffer to Add VSI,
3032          * Update VSI, etc. AQ commands. It is expected that
3033          * these queue set handles be associated with the Tx
3034          * queues by the driver as part of the TX queue context
3035          * initialization. This has to be done regardless of
3036          * DCB as by default everything is mapped to TC0.
3037          */
3038         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3039         tx_ctx.rdylist_act = 0;
3040
3041         /* clear the context in the HMC */
3042         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3043         if (err) {
3044                 dev_info(&vsi->back->pdev->dev,
3045                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3046                          ring->queue_index, pf_q, err);
3047                 return -ENOMEM;
3048         }
3049
3050         /* set the context in the HMC */
3051         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3052         if (err) {
3053                 dev_info(&vsi->back->pdev->dev,
3054                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3055                          ring->queue_index, pf_q, err);
3056                 return -ENOMEM;
3057         }
3058
3059         /* Now associate this queue with this PCI function */
3060         if (vsi->type == I40E_VSI_VMDQ2) {
3061                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3062                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3063                            I40E_QTX_CTL_VFVM_INDX_MASK;
3064         } else {
3065                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3066         }
3067
3068         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3069                     I40E_QTX_CTL_PF_INDX_MASK);
3070         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3071         i40e_flush(hw);
3072
3073         /* cache tail off for easier writes later */
3074         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3075
3076         return 0;
3077 }
3078
3079 /**
3080  * i40e_configure_rx_ring - Configure a receive ring context
3081  * @ring: The Rx ring to configure
3082  *
3083  * Configure the Rx descriptor ring in the HMC context.
3084  **/
3085 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3086 {
3087         struct i40e_vsi *vsi = ring->vsi;
3088         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3089         u16 pf_q = vsi->base_queue + ring->queue_index;
3090         struct i40e_hw *hw = &vsi->back->hw;
3091         struct i40e_hmc_obj_rxq rx_ctx;
3092         i40e_status err = 0;
3093
3094         ring->state = 0;
3095
3096         /* clear the context structure first */
3097         memset(&rx_ctx, 0, sizeof(rx_ctx));
3098
3099         ring->rx_buf_len = vsi->rx_buf_len;
3100
3101         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
3102
3103         rx_ctx.base = (ring->dma / 128);
3104         rx_ctx.qlen = ring->count;
3105
3106         /* use 32 byte descriptors */
3107         rx_ctx.dsize = 1;
3108
3109         /* descriptor type is always zero
3110          * rx_ctx.dtype = 0;
3111          */
3112         rx_ctx.hsplit_0 = 0;
3113
3114         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3115         if (hw->revision_id == 0)
3116                 rx_ctx.lrxqthresh = 0;
3117         else
3118                 rx_ctx.lrxqthresh = 2;
3119         rx_ctx.crcstrip = 1;
3120         rx_ctx.l2tsel = 1;
3121         /* this controls whether VLAN is stripped from inner headers */
3122         rx_ctx.showiv = 0;
3123 #ifdef I40E_FCOE
3124         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
3125 #endif
3126         /* set the prefena field to 1 because the manual says to */
3127         rx_ctx.prefena = 1;
3128
3129         /* clear the context in the HMC */
3130         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3131         if (err) {
3132                 dev_info(&vsi->back->pdev->dev,
3133                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3134                          ring->queue_index, pf_q, err);
3135                 return -ENOMEM;
3136         }
3137
3138         /* set the context in the HMC */
3139         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3140         if (err) {
3141                 dev_info(&vsi->back->pdev->dev,
3142                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3143                          ring->queue_index, pf_q, err);
3144                 return -ENOMEM;
3145         }
3146
3147         /* cache tail for quicker writes, and clear the reg before use */
3148         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3149         writel(0, ring->tail);
3150
3151         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3152
3153         return 0;
3154 }
3155
3156 /**
3157  * i40e_vsi_configure_tx - Configure the VSI for Tx
3158  * @vsi: VSI structure describing this set of rings and resources
3159  *
3160  * Configure the Tx VSI for operation.
3161  **/
3162 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3163 {
3164         int err = 0;
3165         u16 i;
3166
3167         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3168                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3169
3170         return err;
3171 }
3172
3173 /**
3174  * i40e_vsi_configure_rx - Configure the VSI for Rx
3175  * @vsi: the VSI being configured
3176  *
3177  * Configure the Rx VSI for operation.
3178  **/
3179 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3180 {
3181         int err = 0;
3182         u16 i;
3183
3184         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
3185                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
3186                                + ETH_FCS_LEN + VLAN_HLEN;
3187         else
3188                 vsi->max_frame = I40E_RXBUFFER_2048;
3189
3190         vsi->rx_buf_len = I40E_RXBUFFER_2048;
3191
3192 #ifdef I40E_FCOE
3193         /* setup rx buffer for FCoE */
3194         if ((vsi->type == I40E_VSI_FCOE) &&
3195             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
3196                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
3197                 vsi->max_frame = I40E_RXBUFFER_3072;
3198         }
3199
3200 #endif /* I40E_FCOE */
3201         /* round up for the chip's needs */
3202         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
3203                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3204
3205         /* set up individual rings */
3206         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3207                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3208
3209         return err;
3210 }
3211
3212 /**
3213  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3214  * @vsi: ptr to the VSI
3215  **/
3216 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3217 {
3218         struct i40e_ring *tx_ring, *rx_ring;
3219         u16 qoffset, qcount;
3220         int i, n;
3221
3222         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3223                 /* Reset the TC information */
3224                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3225                         rx_ring = vsi->rx_rings[i];
3226                         tx_ring = vsi->tx_rings[i];
3227                         rx_ring->dcb_tc = 0;
3228                         tx_ring->dcb_tc = 0;
3229                 }
3230         }
3231
3232         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3233                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3234                         continue;
3235
3236                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3237                 qcount = vsi->tc_config.tc_info[n].qcount;
3238                 for (i = qoffset; i < (qoffset + qcount); i++) {
3239                         rx_ring = vsi->rx_rings[i];
3240                         tx_ring = vsi->tx_rings[i];
3241                         rx_ring->dcb_tc = n;
3242                         tx_ring->dcb_tc = n;
3243                 }
3244         }
3245 }
3246
3247 /**
3248  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3249  * @vsi: ptr to the VSI
3250  **/
3251 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3252 {
3253         struct i40e_pf *pf = vsi->back;
3254         int err;
3255
3256         if (vsi->netdev)
3257                 i40e_set_rx_mode(vsi->netdev);
3258
3259         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3260                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3261                 if (err) {
3262                         dev_warn(&pf->pdev->dev,
3263                                  "could not set up macaddr; err %d\n", err);
3264                 }
3265         }
3266 }
3267
3268 /**
3269  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3270  * @vsi: Pointer to the targeted VSI
3271  *
3272  * This function replays the hlist on the hw where all the SB Flow Director
3273  * filters were saved.
3274  **/
3275 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3276 {
3277         struct i40e_fdir_filter *filter;
3278         struct i40e_pf *pf = vsi->back;
3279         struct hlist_node *node;
3280
3281         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3282                 return;
3283
3284         hlist_for_each_entry_safe(filter, node,
3285                                   &pf->fdir_filter_list, fdir_node) {
3286                 i40e_add_del_fdir(vsi, filter, true);
3287         }
3288 }
3289
3290 /**
3291  * i40e_vsi_configure - Set up the VSI for action
3292  * @vsi: the VSI being configured
3293  **/
3294 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3295 {
3296         int err;
3297
3298         i40e_set_vsi_rx_mode(vsi);
3299         i40e_restore_vlan(vsi);
3300         i40e_vsi_config_dcb_rings(vsi);
3301         err = i40e_vsi_configure_tx(vsi);
3302         if (!err)
3303                 err = i40e_vsi_configure_rx(vsi);
3304
3305         return err;
3306 }
3307
3308 /**
3309  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3310  * @vsi: the VSI being configured
3311  **/
3312 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3313 {
3314         struct i40e_pf *pf = vsi->back;
3315         struct i40e_hw *hw = &pf->hw;
3316         u16 vector;
3317         int i, q;
3318         u32 qp;
3319
3320         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3321          * and PFINT_LNKLSTn registers, e.g.:
3322          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3323          */
3324         qp = vsi->base_queue;
3325         vector = vsi->base_vector;
3326         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3327                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3328
3329                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3330                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3331                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3332                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3333                      q_vector->rx.itr);
3334                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3335                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3336                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3337                      q_vector->tx.itr);
3338                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3339                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3340
3341                 /* Linked list for the queuepairs assigned to this vector */
3342                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3343                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3344                         u32 val;
3345
3346                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3347                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3348                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3349                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3350                               (I40E_QUEUE_TYPE_TX
3351                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3352
3353                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3354
3355                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3356                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3357                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3358                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3359                               (I40E_QUEUE_TYPE_RX
3360                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3361
3362                         /* Terminate the linked list */
3363                         if (q == (q_vector->num_ringpairs - 1))
3364                                 val |= (I40E_QUEUE_END_OF_LIST
3365                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3366
3367                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3368                         qp++;
3369                 }
3370         }
3371
3372         i40e_flush(hw);
3373 }
3374
3375 /**
3376  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3377  * @hw: ptr to the hardware info
3378  **/
3379 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3380 {
3381         struct i40e_hw *hw = &pf->hw;
3382         u32 val;
3383
3384         /* clear things first */
3385         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3386         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3387
3388         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3389               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3390               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3391               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3392               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3393               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3394               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3395               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3396
3397         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3398                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3399
3400         if (pf->flags & I40E_FLAG_PTP)
3401                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3402
3403         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3404
3405         /* SW_ITR_IDX = 0, but don't change INTENA */
3406         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3407                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3408
3409         /* OTHER_ITR_IDX = 0 */
3410         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3411 }
3412
3413 /**
3414  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3415  * @vsi: the VSI being configured
3416  **/
3417 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3418 {
3419         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3420         struct i40e_pf *pf = vsi->back;
3421         struct i40e_hw *hw = &pf->hw;
3422         u32 val;
3423
3424         /* set the ITR configuration */
3425         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3426         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3427         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3428         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3429         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3430         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3431         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3432
3433         i40e_enable_misc_int_causes(pf);
3434
3435         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3436         wr32(hw, I40E_PFINT_LNKLST0, 0);
3437
3438         /* Associate the queue pair to the vector and enable the queue int */
3439         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3440               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3441               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3442
3443         wr32(hw, I40E_QINT_RQCTL(0), val);
3444
3445         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3446               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3447               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3448
3449         wr32(hw, I40E_QINT_TQCTL(0), val);
3450         i40e_flush(hw);
3451 }
3452
3453 /**
3454  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3455  * @pf: board private structure
3456  **/
3457 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3458 {
3459         struct i40e_hw *hw = &pf->hw;
3460
3461         wr32(hw, I40E_PFINT_DYN_CTL0,
3462              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3463         i40e_flush(hw);
3464 }
3465
3466 /**
3467  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3468  * @pf: board private structure
3469  * @clearpba: true when all pending interrupt events should be cleared
3470  **/
3471 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3472 {
3473         struct i40e_hw *hw = &pf->hw;
3474         u32 val;
3475
3476         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3477               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3478               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3479
3480         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3481         i40e_flush(hw);
3482 }
3483
3484 /**
3485  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3486  * @irq: interrupt number
3487  * @data: pointer to a q_vector
3488  **/
3489 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3490 {
3491         struct i40e_q_vector *q_vector = data;
3492
3493         if (!q_vector->tx.ring && !q_vector->rx.ring)
3494                 return IRQ_HANDLED;
3495
3496         napi_schedule_irqoff(&q_vector->napi);
3497
3498         return IRQ_HANDLED;
3499 }
3500
3501 /**
3502  * i40e_irq_affinity_notify - Callback for affinity changes
3503  * @notify: context as to what irq was changed
3504  * @mask: the new affinity mask
3505  *
3506  * This is a callback function used by the irq_set_affinity_notifier function
3507  * so that we may register to receive changes to the irq affinity masks.
3508  **/
3509 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3510                                      const cpumask_t *mask)
3511 {
3512         struct i40e_q_vector *q_vector =
3513                 container_of(notify, struct i40e_q_vector, affinity_notify);
3514
3515         q_vector->affinity_mask = *mask;
3516 }
3517
3518 /**
3519  * i40e_irq_affinity_release - Callback for affinity notifier release
3520  * @ref: internal core kernel usage
3521  *
3522  * This is a callback function used by the irq_set_affinity_notifier function
3523  * to inform the current notification subscriber that they will no longer
3524  * receive notifications.
3525  **/
3526 static void i40e_irq_affinity_release(struct kref *ref) {}
3527
3528 /**
3529  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3530  * @vsi: the VSI being configured
3531  * @basename: name for the vector
3532  *
3533  * Allocates MSI-X vectors and requests interrupts from the kernel.
3534  **/
3535 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3536 {
3537         int q_vectors = vsi->num_q_vectors;
3538         struct i40e_pf *pf = vsi->back;
3539         int base = vsi->base_vector;
3540         int rx_int_idx = 0;
3541         int tx_int_idx = 0;
3542         int vector, err;
3543         int irq_num;
3544
3545         for (vector = 0; vector < q_vectors; vector++) {
3546                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3547
3548                 irq_num = pf->msix_entries[base + vector].vector;
3549
3550                 if (q_vector->tx.ring && q_vector->rx.ring) {
3551                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3552                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3553                         tx_int_idx++;
3554                 } else if (q_vector->rx.ring) {
3555                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3556                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3557                 } else if (q_vector->tx.ring) {
3558                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3559                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3560                 } else {
3561                         /* skip this unused q_vector */
3562                         continue;
3563                 }
3564                 err = request_irq(irq_num,
3565                                   vsi->irq_handler,
3566                                   0,
3567                                   q_vector->name,
3568                                   q_vector);
3569                 if (err) {
3570                         dev_info(&pf->pdev->dev,
3571                                  "MSIX request_irq failed, error: %d\n", err);
3572                         goto free_queue_irqs;
3573                 }
3574
3575                 /* register for affinity change notifications */
3576                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3577                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3578                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3579                 /* assign the mask for this irq */
3580                 irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
3581         }
3582
3583         vsi->irqs_ready = true;
3584         return 0;
3585
3586 free_queue_irqs:
3587         while (vector) {
3588                 vector--;
3589                 irq_num = pf->msix_entries[base + vector].vector;
3590                 irq_set_affinity_notifier(irq_num, NULL);
3591                 irq_set_affinity_hint(irq_num, NULL);
3592                 free_irq(irq_num, &vsi->q_vectors[vector]);
3593         }
3594         return err;
3595 }
3596
3597 /**
3598  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3599  * @vsi: the VSI being un-configured
3600  **/
3601 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3602 {
3603         struct i40e_pf *pf = vsi->back;
3604         struct i40e_hw *hw = &pf->hw;
3605         int base = vsi->base_vector;
3606         int i;
3607
3608         for (i = 0; i < vsi->num_queue_pairs; i++) {
3609                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3610                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3611         }
3612
3613         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3614                 for (i = vsi->base_vector;
3615                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3616                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3617
3618                 i40e_flush(hw);
3619                 for (i = 0; i < vsi->num_q_vectors; i++)
3620                         synchronize_irq(pf->msix_entries[i + base].vector);
3621         } else {
3622                 /* Legacy and MSI mode - this stops all interrupt handling */
3623                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3624                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3625                 i40e_flush(hw);
3626                 synchronize_irq(pf->pdev->irq);
3627         }
3628 }
3629
3630 /**
3631  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3632  * @vsi: the VSI being configured
3633  **/
3634 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3635 {
3636         struct i40e_pf *pf = vsi->back;
3637         int i;
3638
3639         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3640                 for (i = 0; i < vsi->num_q_vectors; i++)
3641                         i40e_irq_dynamic_enable(vsi, i);
3642         } else {
3643                 i40e_irq_dynamic_enable_icr0(pf, true);
3644         }
3645
3646         i40e_flush(&pf->hw);
3647         return 0;
3648 }
3649
3650 /**
3651  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3652  * @pf: board private structure
3653  **/
3654 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3655 {
3656         /* Disable ICR 0 */
3657         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3658         i40e_flush(&pf->hw);
3659 }
3660
3661 /**
3662  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3663  * @irq: interrupt number
3664  * @data: pointer to a q_vector
3665  *
3666  * This is the handler used for all MSI/Legacy interrupts, and deals
3667  * with both queue and non-queue interrupts.  This is also used in
3668  * MSIX mode to handle the non-queue interrupts.
3669  **/
3670 static irqreturn_t i40e_intr(int irq, void *data)
3671 {
3672         struct i40e_pf *pf = (struct i40e_pf *)data;
3673         struct i40e_hw *hw = &pf->hw;
3674         irqreturn_t ret = IRQ_NONE;
3675         u32 icr0, icr0_remaining;
3676         u32 val, ena_mask;
3677
3678         icr0 = rd32(hw, I40E_PFINT_ICR0);
3679         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3680
3681         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3682         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3683                 goto enable_intr;
3684
3685         /* if interrupt but no bits showing, must be SWINT */
3686         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3687             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3688                 pf->sw_int_count++;
3689
3690         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3691             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3692                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3693                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3694                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3695         }
3696
3697         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3698         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3699                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3700                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3701
3702                 /* We do not have a way to disarm Queue causes while leaving
3703                  * interrupt enabled for all other causes, ideally
3704                  * interrupt should be disabled while we are in NAPI but
3705                  * this is not a performance path and napi_schedule()
3706                  * can deal with rescheduling.
3707                  */
3708                 if (!test_bit(__I40E_DOWN, &pf->state))
3709                         napi_schedule_irqoff(&q_vector->napi);
3710         }
3711
3712         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3713                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3714                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3715                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3716         }
3717
3718         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3719                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3720                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3721         }
3722
3723         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3724                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3725                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3726         }
3727
3728         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3729                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3730                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3731                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3732                 val = rd32(hw, I40E_GLGEN_RSTAT);
3733                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3734                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3735                 if (val == I40E_RESET_CORER) {
3736                         pf->corer_count++;
3737                 } else if (val == I40E_RESET_GLOBR) {
3738                         pf->globr_count++;
3739                 } else if (val == I40E_RESET_EMPR) {
3740                         pf->empr_count++;
3741                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3742                 }
3743         }
3744
3745         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3746                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3747                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3748                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3749                          rd32(hw, I40E_PFHMC_ERRORINFO),
3750                          rd32(hw, I40E_PFHMC_ERRORDATA));
3751         }
3752
3753         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3754                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3755
3756                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3757                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3758                         i40e_ptp_tx_hwtstamp(pf);
3759                 }
3760         }
3761
3762         /* If a critical error is pending we have no choice but to reset the
3763          * device.
3764          * Report and mask out any remaining unexpected interrupts.
3765          */
3766         icr0_remaining = icr0 & ena_mask;
3767         if (icr0_remaining) {
3768                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3769                          icr0_remaining);
3770                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3771                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3772                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3773                         dev_info(&pf->pdev->dev, "device will be reset\n");
3774                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3775                         i40e_service_event_schedule(pf);
3776                 }
3777                 ena_mask &= ~icr0_remaining;
3778         }
3779         ret = IRQ_HANDLED;
3780
3781 enable_intr:
3782         /* re-enable interrupt causes */
3783         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3784         if (!test_bit(__I40E_DOWN, &pf->state)) {
3785                 i40e_service_event_schedule(pf);
3786                 i40e_irq_dynamic_enable_icr0(pf, false);
3787         }
3788
3789         return ret;
3790 }
3791
3792 /**
3793  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3794  * @tx_ring:  tx ring to clean
3795  * @budget:   how many cleans we're allowed
3796  *
3797  * Returns true if there's any budget left (e.g. the clean is finished)
3798  **/
3799 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3800 {
3801         struct i40e_vsi *vsi = tx_ring->vsi;
3802         u16 i = tx_ring->next_to_clean;
3803         struct i40e_tx_buffer *tx_buf;
3804         struct i40e_tx_desc *tx_desc;
3805
3806         tx_buf = &tx_ring->tx_bi[i];
3807         tx_desc = I40E_TX_DESC(tx_ring, i);
3808         i -= tx_ring->count;
3809
3810         do {
3811                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3812
3813                 /* if next_to_watch is not set then there is no work pending */
3814                 if (!eop_desc)
3815                         break;
3816
3817                 /* prevent any other reads prior to eop_desc */
3818                 read_barrier_depends();
3819
3820                 /* if the descriptor isn't done, no work yet to do */
3821                 if (!(eop_desc->cmd_type_offset_bsz &
3822                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3823                         break;
3824
3825                 /* clear next_to_watch to prevent false hangs */
3826                 tx_buf->next_to_watch = NULL;
3827
3828                 tx_desc->buffer_addr = 0;
3829                 tx_desc->cmd_type_offset_bsz = 0;
3830                 /* move past filter desc */
3831                 tx_buf++;
3832                 tx_desc++;
3833                 i++;
3834                 if (unlikely(!i)) {
3835                         i -= tx_ring->count;
3836                         tx_buf = tx_ring->tx_bi;
3837                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3838                 }
3839                 /* unmap skb header data */
3840                 dma_unmap_single(tx_ring->dev,
3841                                  dma_unmap_addr(tx_buf, dma),
3842                                  dma_unmap_len(tx_buf, len),
3843                                  DMA_TO_DEVICE);
3844                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3845                         kfree(tx_buf->raw_buf);
3846
3847                 tx_buf->raw_buf = NULL;
3848                 tx_buf->tx_flags = 0;
3849                 tx_buf->next_to_watch = NULL;
3850                 dma_unmap_len_set(tx_buf, len, 0);
3851                 tx_desc->buffer_addr = 0;
3852                 tx_desc->cmd_type_offset_bsz = 0;
3853
3854                 /* move us past the eop_desc for start of next FD desc */
3855                 tx_buf++;
3856                 tx_desc++;
3857                 i++;
3858                 if (unlikely(!i)) {
3859                         i -= tx_ring->count;
3860                         tx_buf = tx_ring->tx_bi;
3861                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3862                 }
3863
3864                 /* update budget accounting */
3865                 budget--;
3866         } while (likely(budget));
3867
3868         i += tx_ring->count;
3869         tx_ring->next_to_clean = i;
3870
3871         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3872                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3873
3874         return budget > 0;
3875 }
3876
3877 /**
3878  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3879  * @irq: interrupt number
3880  * @data: pointer to a q_vector
3881  **/
3882 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3883 {
3884         struct i40e_q_vector *q_vector = data;
3885         struct i40e_vsi *vsi;
3886
3887         if (!q_vector->tx.ring)
3888                 return IRQ_HANDLED;
3889
3890         vsi = q_vector->tx.ring->vsi;
3891         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3892
3893         return IRQ_HANDLED;
3894 }
3895
3896 /**
3897  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3898  * @vsi: the VSI being configured
3899  * @v_idx: vector index
3900  * @qp_idx: queue pair index
3901  **/
3902 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3903 {
3904         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3905         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3906         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3907
3908         tx_ring->q_vector = q_vector;
3909         tx_ring->next = q_vector->tx.ring;
3910         q_vector->tx.ring = tx_ring;
3911         q_vector->tx.count++;
3912
3913         rx_ring->q_vector = q_vector;
3914         rx_ring->next = q_vector->rx.ring;
3915         q_vector->rx.ring = rx_ring;
3916         q_vector->rx.count++;
3917 }
3918
3919 /**
3920  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3921  * @vsi: the VSI being configured
3922  *
3923  * This function maps descriptor rings to the queue-specific vectors
3924  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3925  * one vector per queue pair, but on a constrained vector budget, we
3926  * group the queue pairs as "efficiently" as possible.
3927  **/
3928 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3929 {
3930         int qp_remaining = vsi->num_queue_pairs;
3931         int q_vectors = vsi->num_q_vectors;
3932         int num_ringpairs;
3933         int v_start = 0;
3934         int qp_idx = 0;
3935
3936         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3937          * group them so there are multiple queues per vector.
3938          * It is also important to go through all the vectors available to be
3939          * sure that if we don't use all the vectors, that the remaining vectors
3940          * are cleared. This is especially important when decreasing the
3941          * number of queues in use.
3942          */
3943         for (; v_start < q_vectors; v_start++) {
3944                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3945
3946                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3947
3948                 q_vector->num_ringpairs = num_ringpairs;
3949
3950                 q_vector->rx.count = 0;
3951                 q_vector->tx.count = 0;
3952                 q_vector->rx.ring = NULL;
3953                 q_vector->tx.ring = NULL;
3954
3955                 while (num_ringpairs--) {
3956                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3957                         qp_idx++;
3958                         qp_remaining--;
3959                 }
3960         }
3961 }
3962
3963 /**
3964  * i40e_vsi_request_irq - Request IRQ from the OS
3965  * @vsi: the VSI being configured
3966  * @basename: name for the vector
3967  **/
3968 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3969 {
3970         struct i40e_pf *pf = vsi->back;
3971         int err;
3972
3973         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3974                 err = i40e_vsi_request_irq_msix(vsi, basename);
3975         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3976                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3977                                   pf->int_name, pf);
3978         else
3979                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3980                                   pf->int_name, pf);
3981
3982         if (err)
3983                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3984
3985         return err;
3986 }
3987
3988 #ifdef CONFIG_NET_POLL_CONTROLLER
3989 /**
3990  * i40e_netpoll - A Polling 'interrupt' handler
3991  * @netdev: network interface device structure
3992  *
3993  * This is used by netconsole to send skbs without having to re-enable
3994  * interrupts.  It's not called while the normal interrupt routine is executing.
3995  **/
3996 #ifdef I40E_FCOE
3997 void i40e_netpoll(struct net_device *netdev)
3998 #else
3999 static void i40e_netpoll(struct net_device *netdev)
4000 #endif
4001 {
4002         struct i40e_netdev_priv *np = netdev_priv(netdev);
4003         struct i40e_vsi *vsi = np->vsi;
4004         struct i40e_pf *pf = vsi->back;
4005         int i;
4006
4007         /* if interface is down do nothing */
4008         if (test_bit(__I40E_DOWN, &vsi->state))
4009                 return;
4010
4011         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4012                 for (i = 0; i < vsi->num_q_vectors; i++)
4013                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4014         } else {
4015                 i40e_intr(pf->pdev->irq, netdev);
4016         }
4017 }
4018 #endif
4019
4020 /**
4021  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4022  * @pf: the PF being configured
4023  * @pf_q: the PF queue
4024  * @enable: enable or disable state of the queue
4025  *
4026  * This routine will wait for the given Tx queue of the PF to reach the
4027  * enabled or disabled state.
4028  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4029  * multiple retries; else will return 0 in case of success.
4030  **/
4031 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4032 {
4033         int i;
4034         u32 tx_reg;
4035
4036         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4037                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4038                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4039                         break;
4040
4041                 usleep_range(10, 20);
4042         }
4043         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4044                 return -ETIMEDOUT;
4045
4046         return 0;
4047 }
4048
4049 /**
4050  * i40e_vsi_control_tx - Start or stop a VSI's rings
4051  * @vsi: the VSI being configured
4052  * @enable: start or stop the rings
4053  **/
4054 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
4055 {
4056         struct i40e_pf *pf = vsi->back;
4057         struct i40e_hw *hw = &pf->hw;
4058         int i, j, pf_q, ret = 0;
4059         u32 tx_reg;
4060
4061         pf_q = vsi->base_queue;
4062         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4063
4064                 /* warn the TX unit of coming changes */
4065                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4066                 if (!enable)
4067                         usleep_range(10, 20);
4068
4069                 for (j = 0; j < 50; j++) {
4070                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4071                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4072                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4073                                 break;
4074                         usleep_range(1000, 2000);
4075                 }
4076                 /* Skip if the queue is already in the requested state */
4077                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4078                         continue;
4079
4080                 /* turn on/off the queue */
4081                 if (enable) {
4082                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4083                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4084                 } else {
4085                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4086                 }
4087
4088                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4089                 /* No waiting for the Tx queue to disable */
4090                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4091                         continue;
4092
4093                 /* wait for the change to finish */
4094                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
4095                 if (ret) {
4096                         dev_info(&pf->pdev->dev,
4097                                  "VSI seid %d Tx ring %d %sable timeout\n",
4098                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4099                         break;
4100                 }
4101         }
4102
4103         if (hw->revision_id == 0)
4104                 mdelay(50);
4105         return ret;
4106 }
4107
4108 /**
4109  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4110  * @pf: the PF being configured
4111  * @pf_q: the PF queue
4112  * @enable: enable or disable state of the queue
4113  *
4114  * This routine will wait for the given Rx queue of the PF to reach the
4115  * enabled or disabled state.
4116  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4117  * multiple retries; else will return 0 in case of success.
4118  **/
4119 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4120 {
4121         int i;
4122         u32 rx_reg;
4123
4124         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4125                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4126                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4127                         break;
4128
4129                 usleep_range(10, 20);
4130         }
4131         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4132                 return -ETIMEDOUT;
4133
4134         return 0;
4135 }
4136
4137 /**
4138  * i40e_vsi_control_rx - Start or stop a VSI's rings
4139  * @vsi: the VSI being configured
4140  * @enable: start or stop the rings
4141  **/
4142 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
4143 {
4144         struct i40e_pf *pf = vsi->back;
4145         struct i40e_hw *hw = &pf->hw;
4146         int i, j, pf_q, ret = 0;
4147         u32 rx_reg;
4148
4149         pf_q = vsi->base_queue;
4150         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4151                 for (j = 0; j < 50; j++) {
4152                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4153                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4154                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4155                                 break;
4156                         usleep_range(1000, 2000);
4157                 }
4158
4159                 /* Skip if the queue is already in the requested state */
4160                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4161                         continue;
4162
4163                 /* turn on/off the queue */
4164                 if (enable)
4165                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4166                 else
4167                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4168                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4169                 /* No waiting for the Tx queue to disable */
4170                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4171                         continue;
4172
4173                 /* wait for the change to finish */
4174                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4175                 if (ret) {
4176                         dev_info(&pf->pdev->dev,
4177                                  "VSI seid %d Rx ring %d %sable timeout\n",
4178                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4179                         break;
4180                 }
4181         }
4182
4183         return ret;
4184 }
4185
4186 /**
4187  * i40e_vsi_start_rings - Start a VSI's rings
4188  * @vsi: the VSI being configured
4189  **/
4190 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4191 {
4192         int ret = 0;
4193
4194         /* do rx first for enable and last for disable */
4195         ret = i40e_vsi_control_rx(vsi, true);
4196         if (ret)
4197                 return ret;
4198         ret = i40e_vsi_control_tx(vsi, true);
4199
4200         return ret;
4201 }
4202
4203 /**
4204  * i40e_vsi_stop_rings - Stop a VSI's rings
4205  * @vsi: the VSI being configured
4206  **/
4207 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4208 {
4209         /* do rx first for enable and last for disable
4210          * Ignore return value, we need to shutdown whatever we can
4211          */
4212         i40e_vsi_control_tx(vsi, false);
4213         i40e_vsi_control_rx(vsi, false);
4214 }
4215
4216 /**
4217  * i40e_vsi_free_irq - Free the irq association with the OS
4218  * @vsi: the VSI being configured
4219  **/
4220 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4221 {
4222         struct i40e_pf *pf = vsi->back;
4223         struct i40e_hw *hw = &pf->hw;
4224         int base = vsi->base_vector;
4225         u32 val, qp;
4226         int i;
4227
4228         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4229                 if (!vsi->q_vectors)
4230                         return;
4231
4232                 if (!vsi->irqs_ready)
4233                         return;
4234
4235                 vsi->irqs_ready = false;
4236                 for (i = 0; i < vsi->num_q_vectors; i++) {
4237                         int irq_num;
4238                         u16 vector;
4239
4240                         vector = i + base;
4241                         irq_num = pf->msix_entries[vector].vector;
4242
4243                         /* free only the irqs that were actually requested */
4244                         if (!vsi->q_vectors[i] ||
4245                             !vsi->q_vectors[i]->num_ringpairs)
4246                                 continue;
4247
4248                         /* clear the affinity notifier in the IRQ descriptor */
4249                         irq_set_affinity_notifier(irq_num, NULL);
4250                         /* clear the affinity_mask in the IRQ descriptor */
4251                         irq_set_affinity_hint(irq_num, NULL);
4252                         synchronize_irq(irq_num);
4253                         free_irq(irq_num, vsi->q_vectors[i]);
4254
4255                         /* Tear down the interrupt queue link list
4256                          *
4257                          * We know that they come in pairs and always
4258                          * the Rx first, then the Tx.  To clear the
4259                          * link list, stick the EOL value into the
4260                          * next_q field of the registers.
4261                          */
4262                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4263                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4264                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4265                         val |= I40E_QUEUE_END_OF_LIST
4266                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4267                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4268
4269                         while (qp != I40E_QUEUE_END_OF_LIST) {
4270                                 u32 next;
4271
4272                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4273
4274                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4275                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4276                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4277                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4278
4279                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4280                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4281
4282                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4283
4284                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4285
4286                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4287                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4288
4289                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4290                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4291                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4292                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4293
4294                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4295                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4296
4297                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4298                                 qp = next;
4299                         }
4300                 }
4301         } else {
4302                 free_irq(pf->pdev->irq, pf);
4303
4304                 val = rd32(hw, I40E_PFINT_LNKLST0);
4305                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4306                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4307                 val |= I40E_QUEUE_END_OF_LIST
4308                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4309                 wr32(hw, I40E_PFINT_LNKLST0, val);
4310
4311                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4312                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4313                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4314                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4315                          I40E_QINT_RQCTL_INTEVENT_MASK);
4316
4317                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4318                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4319
4320                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4321
4322                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4323
4324                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4325                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4326                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4327                          I40E_QINT_TQCTL_INTEVENT_MASK);
4328
4329                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4330                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4331
4332                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4333         }
4334 }
4335
4336 /**
4337  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4338  * @vsi: the VSI being configured
4339  * @v_idx: Index of vector to be freed
4340  *
4341  * This function frees the memory allocated to the q_vector.  In addition if
4342  * NAPI is enabled it will delete any references to the NAPI struct prior
4343  * to freeing the q_vector.
4344  **/
4345 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4346 {
4347         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4348         struct i40e_ring *ring;
4349
4350         if (!q_vector)
4351                 return;
4352
4353         /* disassociate q_vector from rings */
4354         i40e_for_each_ring(ring, q_vector->tx)
4355                 ring->q_vector = NULL;
4356
4357         i40e_for_each_ring(ring, q_vector->rx)
4358                 ring->q_vector = NULL;
4359
4360         /* only VSI w/ an associated netdev is set up w/ NAPI */
4361         if (vsi->netdev)
4362                 netif_napi_del(&q_vector->napi);
4363
4364         vsi->q_vectors[v_idx] = NULL;
4365
4366         kfree_rcu(q_vector, rcu);
4367 }
4368
4369 /**
4370  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4371  * @vsi: the VSI being un-configured
4372  *
4373  * This frees the memory allocated to the q_vectors and
4374  * deletes references to the NAPI struct.
4375  **/
4376 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4377 {
4378         int v_idx;
4379
4380         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4381                 i40e_free_q_vector(vsi, v_idx);
4382 }
4383
4384 /**
4385  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4386  * @pf: board private structure
4387  **/
4388 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4389 {
4390         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4391         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4392                 pci_disable_msix(pf->pdev);
4393                 kfree(pf->msix_entries);
4394                 pf->msix_entries = NULL;
4395                 kfree(pf->irq_pile);
4396                 pf->irq_pile = NULL;
4397         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4398                 pci_disable_msi(pf->pdev);
4399         }
4400         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4401 }
4402
4403 /**
4404  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4405  * @pf: board private structure
4406  *
4407  * We go through and clear interrupt specific resources and reset the structure
4408  * to pre-load conditions
4409  **/
4410 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4411 {
4412         int i;
4413
4414         i40e_stop_misc_vector(pf);
4415         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4416                 synchronize_irq(pf->msix_entries[0].vector);
4417                 free_irq(pf->msix_entries[0].vector, pf);
4418         }
4419
4420         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4421                       I40E_IWARP_IRQ_PILE_ID);
4422
4423         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4424         for (i = 0; i < pf->num_alloc_vsi; i++)
4425                 if (pf->vsi[i])
4426                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4427         i40e_reset_interrupt_capability(pf);
4428 }
4429
4430 /**
4431  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4432  * @vsi: the VSI being configured
4433  **/
4434 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4435 {
4436         int q_idx;
4437
4438         if (!vsi->netdev)
4439                 return;
4440
4441         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4442                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4443
4444                 if (q_vector->rx.ring || q_vector->tx.ring)
4445                         napi_enable(&q_vector->napi);
4446         }
4447 }
4448
4449 /**
4450  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4451  * @vsi: the VSI being configured
4452  **/
4453 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4454 {
4455         int q_idx;
4456
4457         if (!vsi->netdev)
4458                 return;
4459
4460         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4461                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4462
4463                 if (q_vector->rx.ring || q_vector->tx.ring)
4464                         napi_disable(&q_vector->napi);
4465         }
4466 }
4467
4468 /**
4469  * i40e_vsi_close - Shut down a VSI
4470  * @vsi: the vsi to be quelled
4471  **/
4472 static void i40e_vsi_close(struct i40e_vsi *vsi)
4473 {
4474         bool reset = false;
4475
4476         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4477                 i40e_down(vsi);
4478         i40e_vsi_free_irq(vsi);
4479         i40e_vsi_free_tx_resources(vsi);
4480         i40e_vsi_free_rx_resources(vsi);
4481         vsi->current_netdev_flags = 0;
4482         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4483                 reset = true;
4484         i40e_notify_client_of_netdev_close(vsi, reset);
4485 }
4486
4487 /**
4488  * i40e_quiesce_vsi - Pause a given VSI
4489  * @vsi: the VSI being paused
4490  **/
4491 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4492 {
4493         if (test_bit(__I40E_DOWN, &vsi->state))
4494                 return;
4495
4496         /* No need to disable FCoE VSI when Tx suspended */
4497         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4498             vsi->type == I40E_VSI_FCOE) {
4499                 dev_dbg(&vsi->back->pdev->dev,
4500                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4501                 return;
4502         }
4503
4504         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4505         if (vsi->netdev && netif_running(vsi->netdev))
4506                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4507         else
4508                 i40e_vsi_close(vsi);
4509 }
4510
4511 /**
4512  * i40e_unquiesce_vsi - Resume a given VSI
4513  * @vsi: the VSI being resumed
4514  **/
4515 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4516 {
4517         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4518                 return;
4519
4520         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4521         if (vsi->netdev && netif_running(vsi->netdev))
4522                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4523         else
4524                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4525 }
4526
4527 /**
4528  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4529  * @pf: the PF
4530  **/
4531 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4532 {
4533         int v;
4534
4535         for (v = 0; v < pf->num_alloc_vsi; v++) {
4536                 if (pf->vsi[v])
4537                         i40e_quiesce_vsi(pf->vsi[v]);
4538         }
4539 }
4540
4541 /**
4542  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4543  * @pf: the PF
4544  **/
4545 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4546 {
4547         int v;
4548
4549         for (v = 0; v < pf->num_alloc_vsi; v++) {
4550                 if (pf->vsi[v])
4551                         i40e_unquiesce_vsi(pf->vsi[v]);
4552         }
4553 }
4554
4555 #ifdef CONFIG_I40E_DCB
4556 /**
4557  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4558  * @vsi: the VSI being configured
4559  *
4560  * This function waits for the given VSI's queues to be disabled.
4561  **/
4562 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4563 {
4564         struct i40e_pf *pf = vsi->back;
4565         int i, pf_q, ret;
4566
4567         pf_q = vsi->base_queue;
4568         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4569                 /* Check and wait for the disable status of the queue */
4570                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4571                 if (ret) {
4572                         dev_info(&pf->pdev->dev,
4573                                  "VSI seid %d Tx ring %d disable timeout\n",
4574                                  vsi->seid, pf_q);
4575                         return ret;
4576                 }
4577         }
4578
4579         pf_q = vsi->base_queue;
4580         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4581                 /* Check and wait for the disable status of the queue */
4582                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4583                 if (ret) {
4584                         dev_info(&pf->pdev->dev,
4585                                  "VSI seid %d Rx ring %d disable timeout\n",
4586                                  vsi->seid, pf_q);
4587                         return ret;
4588                 }
4589         }
4590
4591         return 0;
4592 }
4593
4594 /**
4595  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4596  * @pf: the PF
4597  *
4598  * This function waits for the queues to be in disabled state for all the
4599  * VSIs that are managed by this PF.
4600  **/
4601 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4602 {
4603         int v, ret = 0;
4604
4605         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4606                 /* No need to wait for FCoE VSI queues */
4607                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4608                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4609                         if (ret)
4610                                 break;
4611                 }
4612         }
4613
4614         return ret;
4615 }
4616
4617 #endif
4618
4619 /**
4620  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4621  * @q_idx: TX queue number
4622  * @vsi: Pointer to VSI struct
4623  *
4624  * This function checks specified queue for given VSI. Detects hung condition.
4625  * Sets hung bit since it is two step process. Before next run of service task
4626  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4627  * hung condition remain unchanged and during subsequent run, this function
4628  * issues SW interrupt to recover from hung condition.
4629  **/
4630 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4631 {
4632         struct i40e_ring *tx_ring = NULL;
4633         struct i40e_pf  *pf;
4634         u32 head, val, tx_pending_hw;
4635         int i;
4636
4637         pf = vsi->back;
4638
4639         /* now that we have an index, find the tx_ring struct */
4640         for (i = 0; i < vsi->num_queue_pairs; i++) {
4641                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4642                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4643                                 tx_ring = vsi->tx_rings[i];
4644                                 break;
4645                         }
4646                 }
4647         }
4648
4649         if (!tx_ring)
4650                 return;
4651
4652         /* Read interrupt register */
4653         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4654                 val = rd32(&pf->hw,
4655                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4656                                                tx_ring->vsi->base_vector - 1));
4657         else
4658                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4659
4660         head = i40e_get_head(tx_ring);
4661
4662         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4663
4664         /* HW is done executing descriptors, updated HEAD write back,
4665          * but SW hasn't processed those descriptors. If interrupt is
4666          * not generated from this point ON, it could result into
4667          * dev_watchdog detecting timeout on those netdev_queue,
4668          * hence proactively trigger SW interrupt.
4669          */
4670         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4671                 /* NAPI Poll didn't run and clear since it was set */
4672                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4673                                        &tx_ring->q_vector->hung_detected)) {
4674                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4675                                     vsi->seid, q_idx, tx_pending_hw,
4676                                     tx_ring->next_to_clean, head,
4677                                     tx_ring->next_to_use,
4678                                     readl(tx_ring->tail));
4679                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4680                                     vsi->seid, q_idx, val);
4681                         i40e_force_wb(vsi, tx_ring->q_vector);
4682                 } else {
4683                         /* First Chance - detected possible hung */
4684                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4685                                 &tx_ring->q_vector->hung_detected);
4686                 }
4687         }
4688
4689         /* This is the case where we have interrupts missing,
4690          * so the tx_pending in HW will most likely be 0, but we
4691          * will have tx_pending in SW since the WB happened but the
4692          * interrupt got lost.
4693          */
4694         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4695             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4696                 local_bh_disable();
4697                 if (napi_reschedule(&tx_ring->q_vector->napi))
4698                         tx_ring->tx_stats.tx_lost_interrupt++;
4699                 local_bh_enable();
4700         }
4701 }
4702
4703 /**
4704  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4705  * @pf:  pointer to PF struct
4706  *
4707  * LAN VSI has netdev and netdev has TX queues. This function is to check
4708  * each of those TX queues if they are hung, trigger recovery by issuing
4709  * SW interrupt.
4710  **/
4711 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4712 {
4713         struct net_device *netdev;
4714         struct i40e_vsi *vsi;
4715         int i;
4716
4717         /* Only for LAN VSI */
4718         vsi = pf->vsi[pf->lan_vsi];
4719
4720         if (!vsi)
4721                 return;
4722
4723         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4724         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4725             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4726                 return;
4727
4728         /* Make sure type is MAIN VSI */
4729         if (vsi->type != I40E_VSI_MAIN)
4730                 return;
4731
4732         netdev = vsi->netdev;
4733         if (!netdev)
4734                 return;
4735
4736         /* Bail out if netif_carrier is not OK */
4737         if (!netif_carrier_ok(netdev))
4738                 return;
4739
4740         /* Go thru' TX queues for netdev */
4741         for (i = 0; i < netdev->num_tx_queues; i++) {
4742                 struct netdev_queue *q;
4743
4744                 q = netdev_get_tx_queue(netdev, i);
4745                 if (q)
4746                         i40e_detect_recover_hung_queue(i, vsi);
4747         }
4748 }
4749
4750 /**
4751  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4752  * @pf: pointer to PF
4753  *
4754  * Get TC map for ISCSI PF type that will include iSCSI TC
4755  * and LAN TC.
4756  **/
4757 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4758 {
4759         struct i40e_dcb_app_priority_table app;
4760         struct i40e_hw *hw = &pf->hw;
4761         u8 enabled_tc = 1; /* TC0 is always enabled */
4762         u8 tc, i;
4763         /* Get the iSCSI APP TLV */
4764         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4765
4766         for (i = 0; i < dcbcfg->numapps; i++) {
4767                 app = dcbcfg->app[i];
4768                 if (app.selector == I40E_APP_SEL_TCPIP &&
4769                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4770                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4771                         enabled_tc |= BIT(tc);
4772                         break;
4773                 }
4774         }
4775
4776         return enabled_tc;
4777 }
4778
4779 /**
4780  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4781  * @dcbcfg: the corresponding DCBx configuration structure
4782  *
4783  * Return the number of TCs from given DCBx configuration
4784  **/
4785 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4786 {
4787         int i, tc_unused = 0;
4788         u8 num_tc = 0;
4789         u8 ret = 0;
4790
4791         /* Scan the ETS Config Priority Table to find
4792          * traffic class enabled for a given priority
4793          * and create a bitmask of enabled TCs
4794          */
4795         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4796                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4797
4798         /* Now scan the bitmask to check for
4799          * contiguous TCs starting with TC0
4800          */
4801         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4802                 if (num_tc & BIT(i)) {
4803                         if (!tc_unused) {
4804                                 ret++;
4805                         } else {
4806                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4807                                 return 1;
4808                         }
4809                 } else {
4810                         tc_unused = 1;
4811                 }
4812         }
4813
4814         /* There is always at least TC0 */
4815         if (!ret)
4816                 ret = 1;
4817
4818         return ret;
4819 }
4820
4821 /**
4822  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4823  * @dcbcfg: the corresponding DCBx configuration structure
4824  *
4825  * Query the current DCB configuration and return the number of
4826  * traffic classes enabled from the given DCBX config
4827  **/
4828 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4829 {
4830         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4831         u8 enabled_tc = 1;
4832         u8 i;
4833
4834         for (i = 0; i < num_tc; i++)
4835                 enabled_tc |= BIT(i);
4836
4837         return enabled_tc;
4838 }
4839
4840 /**
4841  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4842  * @pf: PF being queried
4843  *
4844  * Return number of traffic classes enabled for the given PF
4845  **/
4846 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4847 {
4848         struct i40e_hw *hw = &pf->hw;
4849         u8 i, enabled_tc = 1;
4850         u8 num_tc = 0;
4851         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4852
4853         /* If DCB is not enabled then always in single TC */
4854         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4855                 return 1;
4856
4857         /* SFP mode will be enabled for all TCs on port */
4858         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4859                 return i40e_dcb_get_num_tc(dcbcfg);
4860
4861         /* MFP mode return count of enabled TCs for this PF */
4862         if (pf->hw.func_caps.iscsi)
4863                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4864         else
4865                 return 1; /* Only TC0 */
4866
4867         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4868                 if (enabled_tc & BIT(i))
4869                         num_tc++;
4870         }
4871         return num_tc;
4872 }
4873
4874 /**
4875  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4876  * @pf: PF being queried
4877  *
4878  * Return a bitmap for enabled traffic classes for this PF.
4879  **/
4880 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4881 {
4882         /* If DCB is not enabled for this PF then just return default TC */
4883         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4884                 return I40E_DEFAULT_TRAFFIC_CLASS;
4885
4886         /* SFP mode we want PF to be enabled for all TCs */
4887         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4888                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4889
4890         /* MFP enabled and iSCSI PF type */
4891         if (pf->hw.func_caps.iscsi)
4892                 return i40e_get_iscsi_tc_map(pf);
4893         else
4894                 return I40E_DEFAULT_TRAFFIC_CLASS;
4895 }
4896
4897 /**
4898  * i40e_vsi_get_bw_info - Query VSI BW Information
4899  * @vsi: the VSI being queried
4900  *
4901  * Returns 0 on success, negative value on failure
4902  **/
4903 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4904 {
4905         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4906         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4907         struct i40e_pf *pf = vsi->back;
4908         struct i40e_hw *hw = &pf->hw;
4909         i40e_status ret;
4910         u32 tc_bw_max;
4911         int i;
4912
4913         /* Get the VSI level BW configuration */
4914         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4915         if (ret) {
4916                 dev_info(&pf->pdev->dev,
4917                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4918                          i40e_stat_str(&pf->hw, ret),
4919                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4920                 return -EINVAL;
4921         }
4922
4923         /* Get the VSI level BW configuration per TC */
4924         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4925                                                NULL);
4926         if (ret) {
4927                 dev_info(&pf->pdev->dev,
4928                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4929                          i40e_stat_str(&pf->hw, ret),
4930                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4931                 return -EINVAL;
4932         }
4933
4934         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4935                 dev_info(&pf->pdev->dev,
4936                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4937                          bw_config.tc_valid_bits,
4938                          bw_ets_config.tc_valid_bits);
4939                 /* Still continuing */
4940         }
4941
4942         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4943         vsi->bw_max_quanta = bw_config.max_bw;
4944         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4945                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4946         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4947                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4948                 vsi->bw_ets_limit_credits[i] =
4949                                         le16_to_cpu(bw_ets_config.credits[i]);
4950                 /* 3 bits out of 4 for each TC */
4951                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4952         }
4953
4954         return 0;
4955 }
4956
4957 /**
4958  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4959  * @vsi: the VSI being configured
4960  * @enabled_tc: TC bitmap
4961  * @bw_credits: BW shared credits per TC
4962  *
4963  * Returns 0 on success, negative value on failure
4964  **/
4965 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4966                                        u8 *bw_share)
4967 {
4968         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4969         i40e_status ret;
4970         int i;
4971
4972         bw_data.tc_valid_bits = enabled_tc;
4973         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4974                 bw_data.tc_bw_credits[i] = bw_share[i];
4975
4976         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4977                                        NULL);
4978         if (ret) {
4979                 dev_info(&vsi->back->pdev->dev,
4980                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4981                          vsi->back->hw.aq.asq_last_status);
4982                 return -EINVAL;
4983         }
4984
4985         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4986                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4987
4988         return 0;
4989 }
4990
4991 /**
4992  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4993  * @vsi: the VSI being configured
4994  * @enabled_tc: TC map to be enabled
4995  *
4996  **/
4997 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4998 {
4999         struct net_device *netdev = vsi->netdev;
5000         struct i40e_pf *pf = vsi->back;
5001         struct i40e_hw *hw = &pf->hw;
5002         u8 netdev_tc = 0;
5003         int i;
5004         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5005
5006         if (!netdev)
5007                 return;
5008
5009         if (!enabled_tc) {
5010                 netdev_reset_tc(netdev);
5011                 return;
5012         }
5013
5014         /* Set up actual enabled TCs on the VSI */
5015         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5016                 return;
5017
5018         /* set per TC queues for the VSI */
5019         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5020                 /* Only set TC queues for enabled tcs
5021                  *
5022                  * e.g. For a VSI that has TC0 and TC3 enabled the
5023                  * enabled_tc bitmap would be 0x00001001; the driver
5024                  * will set the numtc for netdev as 2 that will be
5025                  * referenced by the netdev layer as TC 0 and 1.
5026                  */
5027                 if (vsi->tc_config.enabled_tc & BIT(i))
5028                         netdev_set_tc_queue(netdev,
5029                                         vsi->tc_config.tc_info[i].netdev_tc,
5030                                         vsi->tc_config.tc_info[i].qcount,
5031                                         vsi->tc_config.tc_info[i].qoffset);
5032         }
5033
5034         /* Assign UP2TC map for the VSI */
5035         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5036                 /* Get the actual TC# for the UP */
5037                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5038                 /* Get the mapped netdev TC# for the UP */
5039                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5040                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5041         }
5042 }
5043
5044 /**
5045  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5046  * @vsi: the VSI being configured
5047  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5048  **/
5049 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5050                                       struct i40e_vsi_context *ctxt)
5051 {
5052         /* copy just the sections touched not the entire info
5053          * since not all sections are valid as returned by
5054          * update vsi params
5055          */
5056         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5057         memcpy(&vsi->info.queue_mapping,
5058                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5059         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5060                sizeof(vsi->info.tc_mapping));
5061 }
5062
5063 /**
5064  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5065  * @vsi: VSI to be configured
5066  * @enabled_tc: TC bitmap
5067  *
5068  * This configures a particular VSI for TCs that are mapped to the
5069  * given TC bitmap. It uses default bandwidth share for TCs across
5070  * VSIs to configure TC for a particular VSI.
5071  *
5072  * NOTE:
5073  * It is expected that the VSI queues have been quisced before calling
5074  * this function.
5075  **/
5076 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5077 {
5078         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5079         struct i40e_vsi_context ctxt;
5080         int ret = 0;
5081         int i;
5082
5083         /* Check if enabled_tc is same as existing or new TCs */
5084         if (vsi->tc_config.enabled_tc == enabled_tc)
5085                 return ret;
5086
5087         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5088         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5089                 if (enabled_tc & BIT(i))
5090                         bw_share[i] = 1;
5091         }
5092
5093         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5094         if (ret) {
5095                 dev_info(&vsi->back->pdev->dev,
5096                          "Failed configuring TC map %d for VSI %d\n",
5097                          enabled_tc, vsi->seid);
5098                 goto out;
5099         }
5100
5101         /* Update Queue Pairs Mapping for currently enabled UPs */
5102         ctxt.seid = vsi->seid;
5103         ctxt.pf_num = vsi->back->hw.pf_id;
5104         ctxt.vf_num = 0;
5105         ctxt.uplink_seid = vsi->uplink_seid;
5106         ctxt.info = vsi->info;
5107         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5108
5109         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5110                 ctxt.info.valid_sections |=
5111                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5112                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5113         }
5114
5115         /* Update the VSI after updating the VSI queue-mapping information */
5116         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
5117         if (ret) {
5118                 dev_info(&vsi->back->pdev->dev,
5119                          "Update vsi tc config failed, err %s aq_err %s\n",
5120                          i40e_stat_str(&vsi->back->hw, ret),
5121                          i40e_aq_str(&vsi->back->hw,
5122                                      vsi->back->hw.aq.asq_last_status));
5123                 goto out;
5124         }
5125         /* update the local VSI info with updated queue map */
5126         i40e_vsi_update_queue_map(vsi, &ctxt);
5127         vsi->info.valid_sections = 0;
5128
5129         /* Update current VSI BW information */
5130         ret = i40e_vsi_get_bw_info(vsi);
5131         if (ret) {
5132                 dev_info(&vsi->back->pdev->dev,
5133                          "Failed updating vsi bw info, err %s aq_err %s\n",
5134                          i40e_stat_str(&vsi->back->hw, ret),
5135                          i40e_aq_str(&vsi->back->hw,
5136                                      vsi->back->hw.aq.asq_last_status));
5137                 goto out;
5138         }
5139
5140         /* Update the netdev TC setup */
5141         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5142 out:
5143         return ret;
5144 }
5145
5146 /**
5147  * i40e_veb_config_tc - Configure TCs for given VEB
5148  * @veb: given VEB
5149  * @enabled_tc: TC bitmap
5150  *
5151  * Configures given TC bitmap for VEB (switching) element
5152  **/
5153 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
5154 {
5155         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
5156         struct i40e_pf *pf = veb->pf;
5157         int ret = 0;
5158         int i;
5159
5160         /* No TCs or already enabled TCs just return */
5161         if (!enabled_tc || veb->enabled_tc == enabled_tc)
5162                 return ret;
5163
5164         bw_data.tc_valid_bits = enabled_tc;
5165         /* bw_data.absolute_credits is not set (relative) */
5166
5167         /* Enable ETS TCs with equal BW Share for now */
5168         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5169                 if (enabled_tc & BIT(i))
5170                         bw_data.tc_bw_share_credits[i] = 1;
5171         }
5172
5173         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
5174                                                    &bw_data, NULL);
5175         if (ret) {
5176                 dev_info(&pf->pdev->dev,
5177                          "VEB bw config failed, err %s aq_err %s\n",
5178                          i40e_stat_str(&pf->hw, ret),
5179                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5180                 goto out;
5181         }
5182
5183         /* Update the BW information */
5184         ret = i40e_veb_get_bw_info(veb);
5185         if (ret) {
5186                 dev_info(&pf->pdev->dev,
5187                          "Failed getting veb bw config, err %s aq_err %s\n",
5188                          i40e_stat_str(&pf->hw, ret),
5189                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5190         }
5191
5192 out:
5193         return ret;
5194 }
5195
5196 #ifdef CONFIG_I40E_DCB
5197 /**
5198  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
5199  * @pf: PF struct
5200  *
5201  * Reconfigure VEB/VSIs on a given PF; it is assumed that
5202  * the caller would've quiesce all the VSIs before calling
5203  * this function
5204  **/
5205 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
5206 {
5207         u8 tc_map = 0;
5208         int ret;
5209         u8 v;
5210
5211         /* Enable the TCs available on PF to all VEBs */
5212         tc_map = i40e_pf_get_tc_map(pf);
5213         for (v = 0; v < I40E_MAX_VEB; v++) {
5214                 if (!pf->veb[v])
5215                         continue;
5216                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5217                 if (ret) {
5218                         dev_info(&pf->pdev->dev,
5219                                  "Failed configuring TC for VEB seid=%d\n",
5220                                  pf->veb[v]->seid);
5221                         /* Will try to configure as many components */
5222                 }
5223         }
5224
5225         /* Update each VSI */
5226         for (v = 0; v < pf->num_alloc_vsi; v++) {
5227                 if (!pf->vsi[v])
5228                         continue;
5229
5230                 /* - Enable all TCs for the LAN VSI
5231 #ifdef I40E_FCOE
5232                  * - For FCoE VSI only enable the TC configured
5233                  *   as per the APP TLV
5234 #endif
5235                  * - For all others keep them at TC0 for now
5236                  */
5237                 if (v == pf->lan_vsi)
5238                         tc_map = i40e_pf_get_tc_map(pf);
5239                 else
5240                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
5241 #ifdef I40E_FCOE
5242                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
5243                         tc_map = i40e_get_fcoe_tc_map(pf);
5244 #endif /* #ifdef I40E_FCOE */
5245
5246                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5247                 if (ret) {
5248                         dev_info(&pf->pdev->dev,
5249                                  "Failed configuring TC for VSI seid=%d\n",
5250                                  pf->vsi[v]->seid);
5251                         /* Will try to configure as many components */
5252                 } else {
5253                         /* Re-configure VSI vectors based on updated TC map */
5254                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5255                         if (pf->vsi[v]->netdev)
5256                                 i40e_dcbnl_set_all(pf->vsi[v]);
5257                 }
5258         }
5259 }
5260
5261 /**
5262  * i40e_resume_port_tx - Resume port Tx
5263  * @pf: PF struct
5264  *
5265  * Resume a port's Tx and issue a PF reset in case of failure to
5266  * resume.
5267  **/
5268 static int i40e_resume_port_tx(struct i40e_pf *pf)
5269 {
5270         struct i40e_hw *hw = &pf->hw;
5271         int ret;
5272
5273         ret = i40e_aq_resume_port_tx(hw, NULL);
5274         if (ret) {
5275                 dev_info(&pf->pdev->dev,
5276                          "Resume Port Tx failed, err %s aq_err %s\n",
5277                           i40e_stat_str(&pf->hw, ret),
5278                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5279                 /* Schedule PF reset to recover */
5280                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5281                 i40e_service_event_schedule(pf);
5282         }
5283
5284         return ret;
5285 }
5286
5287 /**
5288  * i40e_init_pf_dcb - Initialize DCB configuration
5289  * @pf: PF being configured
5290  *
5291  * Query the current DCB configuration and cache it
5292  * in the hardware structure
5293  **/
5294 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5295 {
5296         struct i40e_hw *hw = &pf->hw;
5297         int err = 0;
5298
5299         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5300         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5301                 goto out;
5302
5303         /* Get the initial DCB configuration */
5304         err = i40e_init_dcb(hw);
5305         if (!err) {
5306                 /* Device/Function is not DCBX capable */
5307                 if ((!hw->func_caps.dcb) ||
5308                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5309                         dev_info(&pf->pdev->dev,
5310                                  "DCBX offload is not supported or is disabled for this PF.\n");
5311
5312                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5313                                 goto out;
5314
5315                 } else {
5316                         /* When status is not DISABLED then DCBX in FW */
5317                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5318                                        DCB_CAP_DCBX_VER_IEEE;
5319
5320                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5321                         /* Enable DCB tagging only when more than one TC
5322                          * or explicitly disable if only one TC
5323                          */
5324                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5325                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5326                         else
5327                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5328                         dev_dbg(&pf->pdev->dev,
5329                                 "DCBX offload is supported for this PF.\n");
5330                 }
5331         } else {
5332                 dev_info(&pf->pdev->dev,
5333                          "Query for DCB configuration failed, err %s aq_err %s\n",
5334                          i40e_stat_str(&pf->hw, err),
5335                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5336         }
5337
5338 out:
5339         return err;
5340 }
5341 #endif /* CONFIG_I40E_DCB */
5342 #define SPEED_SIZE 14
5343 #define FC_SIZE 8
5344 /**
5345  * i40e_print_link_message - print link up or down
5346  * @vsi: the VSI for which link needs a message
5347  */
5348 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5349 {
5350         enum i40e_aq_link_speed new_speed;
5351         char *speed = "Unknown";
5352         char *fc = "Unknown";
5353         char *fec = "";
5354         char *an = "";
5355
5356         new_speed = vsi->back->hw.phy.link_info.link_speed;
5357
5358         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
5359                 return;
5360         vsi->current_isup = isup;
5361         vsi->current_speed = new_speed;
5362         if (!isup) {
5363                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5364                 return;
5365         }
5366
5367         /* Warn user if link speed on NPAR enabled partition is not at
5368          * least 10GB
5369          */
5370         if (vsi->back->hw.func_caps.npar_enable &&
5371             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5372              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5373                 netdev_warn(vsi->netdev,
5374                             "The partition detected link speed that is less than 10Gbps\n");
5375
5376         switch (vsi->back->hw.phy.link_info.link_speed) {
5377         case I40E_LINK_SPEED_40GB:
5378                 speed = "40 G";
5379                 break;
5380         case I40E_LINK_SPEED_20GB:
5381                 speed = "20 G";
5382                 break;
5383         case I40E_LINK_SPEED_25GB:
5384                 speed = "25 G";
5385                 break;
5386         case I40E_LINK_SPEED_10GB:
5387                 speed = "10 G";
5388                 break;
5389         case I40E_LINK_SPEED_1GB:
5390                 speed = "1000 M";
5391                 break;
5392         case I40E_LINK_SPEED_100MB:
5393                 speed = "100 M";
5394                 break;
5395         default:
5396                 break;
5397         }
5398
5399         switch (vsi->back->hw.fc.current_mode) {
5400         case I40E_FC_FULL:
5401                 fc = "RX/TX";
5402                 break;
5403         case I40E_FC_TX_PAUSE:
5404                 fc = "TX";
5405                 break;
5406         case I40E_FC_RX_PAUSE:
5407                 fc = "RX";
5408                 break;
5409         default:
5410                 fc = "None";
5411                 break;
5412         }
5413
5414         if (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
5415                 fec = ", FEC: None";
5416                 an = ", Autoneg: False";
5417
5418                 if (vsi->back->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
5419                         an = ", Autoneg: True";
5420
5421                 if (vsi->back->hw.phy.link_info.fec_info &
5422                     I40E_AQ_CONFIG_FEC_KR_ENA)
5423                         fec = ", FEC: CL74 FC-FEC/BASE-R";
5424                 else if (vsi->back->hw.phy.link_info.fec_info &
5425                          I40E_AQ_CONFIG_FEC_RS_ENA)
5426                         fec = ", FEC: CL108 RS-FEC";
5427         }
5428
5429         netdev_info(vsi->netdev, "NIC Link is Up, %sbps Full Duplex%s%s, Flow Control: %s\n",
5430                     speed, fec, an, fc);
5431 }
5432
5433 /**
5434  * i40e_up_complete - Finish the last steps of bringing up a connection
5435  * @vsi: the VSI being configured
5436  **/
5437 static int i40e_up_complete(struct i40e_vsi *vsi)
5438 {
5439         struct i40e_pf *pf = vsi->back;
5440         int err;
5441
5442         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5443                 i40e_vsi_configure_msix(vsi);
5444         else
5445                 i40e_configure_msi_and_legacy(vsi);
5446
5447         /* start rings */
5448         err = i40e_vsi_start_rings(vsi);
5449         if (err)
5450                 return err;
5451
5452         clear_bit(__I40E_DOWN, &vsi->state);
5453         i40e_napi_enable_all(vsi);
5454         i40e_vsi_enable_irq(vsi);
5455
5456         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5457             (vsi->netdev)) {
5458                 i40e_print_link_message(vsi, true);
5459                 netif_tx_start_all_queues(vsi->netdev);
5460                 netif_carrier_on(vsi->netdev);
5461         } else if (vsi->netdev) {
5462                 i40e_print_link_message(vsi, false);
5463                 /* need to check for qualified module here*/
5464                 if ((pf->hw.phy.link_info.link_info &
5465                         I40E_AQ_MEDIA_AVAILABLE) &&
5466                     (!(pf->hw.phy.link_info.an_info &
5467                         I40E_AQ_QUALIFIED_MODULE)))
5468                         netdev_err(vsi->netdev,
5469                                    "the driver failed to link because an unqualified module was detected.");
5470         }
5471
5472         /* replay FDIR SB filters */
5473         if (vsi->type == I40E_VSI_FDIR) {
5474                 /* reset fd counters */
5475                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5476                 if (pf->fd_tcp_rule > 0) {
5477                         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
5478                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5479                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5480                         pf->fd_tcp_rule = 0;
5481                 }
5482                 i40e_fdir_filter_restore(vsi);
5483         }
5484
5485         /* On the next run of the service_task, notify any clients of the new
5486          * opened netdev
5487          */
5488         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5489         i40e_service_event_schedule(pf);
5490
5491         return 0;
5492 }
5493
5494 /**
5495  * i40e_vsi_reinit_locked - Reset the VSI
5496  * @vsi: the VSI being configured
5497  *
5498  * Rebuild the ring structs after some configuration
5499  * has changed, e.g. MTU size.
5500  **/
5501 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5502 {
5503         struct i40e_pf *pf = vsi->back;
5504
5505         WARN_ON(in_interrupt());
5506         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5507                 usleep_range(1000, 2000);
5508         i40e_down(vsi);
5509
5510         i40e_up(vsi);
5511         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5512 }
5513
5514 /**
5515  * i40e_up - Bring the connection back up after being down
5516  * @vsi: the VSI being configured
5517  **/
5518 int i40e_up(struct i40e_vsi *vsi)
5519 {
5520         int err;
5521
5522         err = i40e_vsi_configure(vsi);
5523         if (!err)
5524                 err = i40e_up_complete(vsi);
5525
5526         return err;
5527 }
5528
5529 /**
5530  * i40e_down - Shutdown the connection processing
5531  * @vsi: the VSI being stopped
5532  **/
5533 void i40e_down(struct i40e_vsi *vsi)
5534 {
5535         int i;
5536
5537         /* It is assumed that the caller of this function
5538          * sets the vsi->state __I40E_DOWN bit.
5539          */
5540         if (vsi->netdev) {
5541                 netif_carrier_off(vsi->netdev);
5542                 netif_tx_disable(vsi->netdev);
5543         }
5544         i40e_vsi_disable_irq(vsi);
5545         i40e_vsi_stop_rings(vsi);
5546         i40e_napi_disable_all(vsi);
5547
5548         for (i = 0; i < vsi->num_queue_pairs; i++) {
5549                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5550                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5551         }
5552
5553         i40e_notify_client_of_netdev_close(vsi, false);
5554
5555 }
5556
5557 /**
5558  * i40e_setup_tc - configure multiple traffic classes
5559  * @netdev: net device to configure
5560  * @tc: number of traffic classes to enable
5561  **/
5562 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5563 {
5564         struct i40e_netdev_priv *np = netdev_priv(netdev);
5565         struct i40e_vsi *vsi = np->vsi;
5566         struct i40e_pf *pf = vsi->back;
5567         u8 enabled_tc = 0;
5568         int ret = -EINVAL;
5569         int i;
5570
5571         /* Check if DCB enabled to continue */
5572         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5573                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5574                 goto exit;
5575         }
5576
5577         /* Check if MFP enabled */
5578         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5579                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5580                 goto exit;
5581         }
5582
5583         /* Check whether tc count is within enabled limit */
5584         if (tc > i40e_pf_get_num_tc(pf)) {
5585                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5586                 goto exit;
5587         }
5588
5589         /* Generate TC map for number of tc requested */
5590         for (i = 0; i < tc; i++)
5591                 enabled_tc |= BIT(i);
5592
5593         /* Requesting same TC configuration as already enabled */
5594         if (enabled_tc == vsi->tc_config.enabled_tc)
5595                 return 0;
5596
5597         /* Quiesce VSI queues */
5598         i40e_quiesce_vsi(vsi);
5599
5600         /* Configure VSI for enabled TCs */
5601         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5602         if (ret) {
5603                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5604                             vsi->seid);
5605                 goto exit;
5606         }
5607
5608         /* Unquiesce VSI */
5609         i40e_unquiesce_vsi(vsi);
5610
5611 exit:
5612         return ret;
5613 }
5614
5615 #ifdef I40E_FCOE
5616 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5617                     struct tc_to_netdev *tc)
5618 #else
5619 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5620                            struct tc_to_netdev *tc)
5621 #endif
5622 {
5623         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5624                 return -EINVAL;
5625         return i40e_setup_tc(netdev, tc->tc);
5626 }
5627
5628 /**
5629  * i40e_open - Called when a network interface is made active
5630  * @netdev: network interface device structure
5631  *
5632  * The open entry point is called when a network interface is made
5633  * active by the system (IFF_UP).  At this point all resources needed
5634  * for transmit and receive operations are allocated, the interrupt
5635  * handler is registered with the OS, the netdev watchdog subtask is
5636  * enabled, and the stack is notified that the interface is ready.
5637  *
5638  * Returns 0 on success, negative value on failure
5639  **/
5640 int i40e_open(struct net_device *netdev)
5641 {
5642         struct i40e_netdev_priv *np = netdev_priv(netdev);
5643         struct i40e_vsi *vsi = np->vsi;
5644         struct i40e_pf *pf = vsi->back;
5645         int err;
5646
5647         /* disallow open during test or if eeprom is broken */
5648         if (test_bit(__I40E_TESTING, &pf->state) ||
5649             test_bit(__I40E_BAD_EEPROM, &pf->state))
5650                 return -EBUSY;
5651
5652         netif_carrier_off(netdev);
5653
5654         err = i40e_vsi_open(vsi);
5655         if (err)
5656                 return err;
5657
5658         /* configure global TSO hardware offload settings */
5659         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5660                                                        TCP_FLAG_FIN) >> 16);
5661         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5662                                                        TCP_FLAG_FIN |
5663                                                        TCP_FLAG_CWR) >> 16);
5664         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5665
5666         udp_tunnel_get_rx_info(netdev);
5667
5668         return 0;
5669 }
5670
5671 /**
5672  * i40e_vsi_open -
5673  * @vsi: the VSI to open
5674  *
5675  * Finish initialization of the VSI.
5676  *
5677  * Returns 0 on success, negative value on failure
5678  **/
5679 int i40e_vsi_open(struct i40e_vsi *vsi)
5680 {
5681         struct i40e_pf *pf = vsi->back;
5682         char int_name[I40E_INT_NAME_STR_LEN];
5683         int err;
5684
5685         /* allocate descriptors */
5686         err = i40e_vsi_setup_tx_resources(vsi);
5687         if (err)
5688                 goto err_setup_tx;
5689         err = i40e_vsi_setup_rx_resources(vsi);
5690         if (err)
5691                 goto err_setup_rx;
5692
5693         err = i40e_vsi_configure(vsi);
5694         if (err)
5695                 goto err_setup_rx;
5696
5697         if (vsi->netdev) {
5698                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5699                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5700                 err = i40e_vsi_request_irq(vsi, int_name);
5701                 if (err)
5702                         goto err_setup_rx;
5703
5704                 /* Notify the stack of the actual queue counts. */
5705                 err = netif_set_real_num_tx_queues(vsi->netdev,
5706                                                    vsi->num_queue_pairs);
5707                 if (err)
5708                         goto err_set_queues;
5709
5710                 err = netif_set_real_num_rx_queues(vsi->netdev,
5711                                                    vsi->num_queue_pairs);
5712                 if (err)
5713                         goto err_set_queues;
5714
5715         } else if (vsi->type == I40E_VSI_FDIR) {
5716                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5717                          dev_driver_string(&pf->pdev->dev),
5718                          dev_name(&pf->pdev->dev));
5719                 err = i40e_vsi_request_irq(vsi, int_name);
5720
5721         } else {
5722                 err = -EINVAL;
5723                 goto err_setup_rx;
5724         }
5725
5726         err = i40e_up_complete(vsi);
5727         if (err)
5728                 goto err_up_complete;
5729
5730         return 0;
5731
5732 err_up_complete:
5733         i40e_down(vsi);
5734 err_set_queues:
5735         i40e_vsi_free_irq(vsi);
5736 err_setup_rx:
5737         i40e_vsi_free_rx_resources(vsi);
5738 err_setup_tx:
5739         i40e_vsi_free_tx_resources(vsi);
5740         if (vsi == pf->vsi[pf->lan_vsi])
5741                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5742
5743         return err;
5744 }
5745
5746 /**
5747  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5748  * @pf: Pointer to PF
5749  *
5750  * This function destroys the hlist where all the Flow Director
5751  * filters were saved.
5752  **/
5753 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5754 {
5755         struct i40e_fdir_filter *filter;
5756         struct hlist_node *node2;
5757
5758         hlist_for_each_entry_safe(filter, node2,
5759                                   &pf->fdir_filter_list, fdir_node) {
5760                 hlist_del(&filter->fdir_node);
5761                 kfree(filter);
5762         }
5763         pf->fdir_pf_active_filters = 0;
5764 }
5765
5766 /**
5767  * i40e_close - Disables a network interface
5768  * @netdev: network interface device structure
5769  *
5770  * The close entry point is called when an interface is de-activated
5771  * by the OS.  The hardware is still under the driver's control, but
5772  * this netdev interface is disabled.
5773  *
5774  * Returns 0, this is not allowed to fail
5775  **/
5776 int i40e_close(struct net_device *netdev)
5777 {
5778         struct i40e_netdev_priv *np = netdev_priv(netdev);
5779         struct i40e_vsi *vsi = np->vsi;
5780
5781         i40e_vsi_close(vsi);
5782
5783         return 0;
5784 }
5785
5786 /**
5787  * i40e_do_reset - Start a PF or Core Reset sequence
5788  * @pf: board private structure
5789  * @reset_flags: which reset is requested
5790  *
5791  * The essential difference in resets is that the PF Reset
5792  * doesn't clear the packet buffers, doesn't reset the PE
5793  * firmware, and doesn't bother the other PFs on the chip.
5794  **/
5795 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5796 {
5797         u32 val;
5798
5799         WARN_ON(in_interrupt());
5800
5801
5802         /* do the biggest reset indicated */
5803         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5804
5805                 /* Request a Global Reset
5806                  *
5807                  * This will start the chip's countdown to the actual full
5808                  * chip reset event, and a warning interrupt to be sent
5809                  * to all PFs, including the requestor.  Our handler
5810                  * for the warning interrupt will deal with the shutdown
5811                  * and recovery of the switch setup.
5812                  */
5813                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5814                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5815                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5816                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5817
5818         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5819
5820                 /* Request a Core Reset
5821                  *
5822                  * Same as Global Reset, except does *not* include the MAC/PHY
5823                  */
5824                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5825                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5826                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5827                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5828                 i40e_flush(&pf->hw);
5829
5830         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5831
5832                 /* Request a PF Reset
5833                  *
5834                  * Resets only the PF-specific registers
5835                  *
5836                  * This goes directly to the tear-down and rebuild of
5837                  * the switch, since we need to do all the recovery as
5838                  * for the Core Reset.
5839                  */
5840                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5841                 i40e_handle_reset_warning(pf);
5842
5843         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5844                 int v;
5845
5846                 /* Find the VSI(s) that requested a re-init */
5847                 dev_info(&pf->pdev->dev,
5848                          "VSI reinit requested\n");
5849                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5850                         struct i40e_vsi *vsi = pf->vsi[v];
5851
5852                         if (vsi != NULL &&
5853                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5854                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5855                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5856                         }
5857                 }
5858         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5859                 int v;
5860
5861                 /* Find the VSI(s) that needs to be brought down */
5862                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5863                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5864                         struct i40e_vsi *vsi = pf->vsi[v];
5865
5866                         if (vsi != NULL &&
5867                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5868                                 set_bit(__I40E_DOWN, &vsi->state);
5869                                 i40e_down(vsi);
5870                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5871                         }
5872                 }
5873         } else {
5874                 dev_info(&pf->pdev->dev,
5875                          "bad reset request 0x%08x\n", reset_flags);
5876         }
5877 }
5878
5879 #ifdef CONFIG_I40E_DCB
5880 /**
5881  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5882  * @pf: board private structure
5883  * @old_cfg: current DCB config
5884  * @new_cfg: new DCB config
5885  **/
5886 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5887                             struct i40e_dcbx_config *old_cfg,
5888                             struct i40e_dcbx_config *new_cfg)
5889 {
5890         bool need_reconfig = false;
5891
5892         /* Check if ETS configuration has changed */
5893         if (memcmp(&new_cfg->etscfg,
5894                    &old_cfg->etscfg,
5895                    sizeof(new_cfg->etscfg))) {
5896                 /* If Priority Table has changed reconfig is needed */
5897                 if (memcmp(&new_cfg->etscfg.prioritytable,
5898                            &old_cfg->etscfg.prioritytable,
5899                            sizeof(new_cfg->etscfg.prioritytable))) {
5900                         need_reconfig = true;
5901                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5902                 }
5903
5904                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5905                            &old_cfg->etscfg.tcbwtable,
5906                            sizeof(new_cfg->etscfg.tcbwtable)))
5907                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5908
5909                 if (memcmp(&new_cfg->etscfg.tsatable,
5910                            &old_cfg->etscfg.tsatable,
5911                            sizeof(new_cfg->etscfg.tsatable)))
5912                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5913         }
5914
5915         /* Check if PFC configuration has changed */
5916         if (memcmp(&new_cfg->pfc,
5917                    &old_cfg->pfc,
5918                    sizeof(new_cfg->pfc))) {
5919                 need_reconfig = true;
5920                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5921         }
5922
5923         /* Check if APP Table has changed */
5924         if (memcmp(&new_cfg->app,
5925                    &old_cfg->app,
5926                    sizeof(new_cfg->app))) {
5927                 need_reconfig = true;
5928                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5929         }
5930
5931         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5932         return need_reconfig;
5933 }
5934
5935 /**
5936  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5937  * @pf: board private structure
5938  * @e: event info posted on ARQ
5939  **/
5940 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5941                                   struct i40e_arq_event_info *e)
5942 {
5943         struct i40e_aqc_lldp_get_mib *mib =
5944                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5945         struct i40e_hw *hw = &pf->hw;
5946         struct i40e_dcbx_config tmp_dcbx_cfg;
5947         bool need_reconfig = false;
5948         int ret = 0;
5949         u8 type;
5950
5951         /* Not DCB capable or capability disabled */
5952         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5953                 return ret;
5954
5955         /* Ignore if event is not for Nearest Bridge */
5956         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5957                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5958         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5959         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5960                 return ret;
5961
5962         /* Check MIB Type and return if event for Remote MIB update */
5963         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5964         dev_dbg(&pf->pdev->dev,
5965                 "LLDP event mib type %s\n", type ? "remote" : "local");
5966         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5967                 /* Update the remote cached instance and return */
5968                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5969                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5970                                 &hw->remote_dcbx_config);
5971                 goto exit;
5972         }
5973
5974         /* Store the old configuration */
5975         tmp_dcbx_cfg = hw->local_dcbx_config;
5976
5977         /* Reset the old DCBx configuration data */
5978         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5979         /* Get updated DCBX data from firmware */
5980         ret = i40e_get_dcb_config(&pf->hw);
5981         if (ret) {
5982                 dev_info(&pf->pdev->dev,
5983                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5984                          i40e_stat_str(&pf->hw, ret),
5985                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5986                 goto exit;
5987         }
5988
5989         /* No change detected in DCBX configs */
5990         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5991                     sizeof(tmp_dcbx_cfg))) {
5992                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5993                 goto exit;
5994         }
5995
5996         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5997                                                &hw->local_dcbx_config);
5998
5999         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
6000
6001         if (!need_reconfig)
6002                 goto exit;
6003
6004         /* Enable DCB tagging only when more than one TC */
6005         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
6006                 pf->flags |= I40E_FLAG_DCB_ENABLED;
6007         else
6008                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6009
6010         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
6011         /* Reconfiguration needed quiesce all VSIs */
6012         i40e_pf_quiesce_all_vsi(pf);
6013
6014         /* Changes in configuration update VEB/VSI */
6015         i40e_dcb_reconfigure(pf);
6016
6017         ret = i40e_resume_port_tx(pf);
6018
6019         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
6020         /* In case of error no point in resuming VSIs */
6021         if (ret)
6022                 goto exit;
6023
6024         /* Wait for the PF's queues to be disabled */
6025         ret = i40e_pf_wait_queues_disabled(pf);
6026         if (ret) {
6027                 /* Schedule PF reset to recover */
6028                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6029                 i40e_service_event_schedule(pf);
6030         } else {
6031                 i40e_pf_unquiesce_all_vsi(pf);
6032                 /* Notify the client for the DCB changes */
6033                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
6034         }
6035
6036 exit:
6037         return ret;
6038 }
6039 #endif /* CONFIG_I40E_DCB */
6040
6041 /**
6042  * i40e_do_reset_safe - Protected reset path for userland calls.
6043  * @pf: board private structure
6044  * @reset_flags: which reset is requested
6045  *
6046  **/
6047 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
6048 {
6049         rtnl_lock();
6050         i40e_do_reset(pf, reset_flags);
6051         rtnl_unlock();
6052 }
6053
6054 /**
6055  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
6056  * @pf: board private structure
6057  * @e: event info posted on ARQ
6058  *
6059  * Handler for LAN Queue Overflow Event generated by the firmware for PF
6060  * and VF queues
6061  **/
6062 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
6063                                            struct i40e_arq_event_info *e)
6064 {
6065         struct i40e_aqc_lan_overflow *data =
6066                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
6067         u32 queue = le32_to_cpu(data->prtdcb_rupto);
6068         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
6069         struct i40e_hw *hw = &pf->hw;
6070         struct i40e_vf *vf;
6071         u16 vf_id;
6072
6073         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
6074                 queue, qtx_ctl);
6075
6076         /* Queue belongs to VF, find the VF and issue VF reset */
6077         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
6078             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
6079                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
6080                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
6081                 vf_id -= hw->func_caps.vf_base_id;
6082                 vf = &pf->vf[vf_id];
6083                 i40e_vc_notify_vf_reset(vf);
6084                 /* Allow VF to process pending reset notification */
6085                 msleep(20);
6086                 i40e_reset_vf(vf, false);
6087         }
6088 }
6089
6090 /**
6091  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
6092  * @pf: board private structure
6093  **/
6094 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
6095 {
6096         u32 val, fcnt_prog;
6097
6098         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
6099         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
6100         return fcnt_prog;
6101 }
6102
6103 /**
6104  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
6105  * @pf: board private structure
6106  **/
6107 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
6108 {
6109         u32 val, fcnt_prog;
6110
6111         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
6112         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
6113                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
6114                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
6115         return fcnt_prog;
6116 }
6117
6118 /**
6119  * i40e_get_global_fd_count - Get total FD filters programmed on device
6120  * @pf: board private structure
6121  **/
6122 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
6123 {
6124         u32 val, fcnt_prog;
6125
6126         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
6127         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
6128                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
6129                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
6130         return fcnt_prog;
6131 }
6132
6133 /**
6134  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
6135  * @pf: board private structure
6136  **/
6137 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
6138 {
6139         struct i40e_fdir_filter *filter;
6140         u32 fcnt_prog, fcnt_avail;
6141         struct hlist_node *node;
6142
6143         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6144                 return;
6145
6146         /* Check if, FD SB or ATR was auto disabled and if there is enough room
6147          * to re-enable
6148          */
6149         fcnt_prog = i40e_get_global_fd_count(pf);
6150         fcnt_avail = pf->fdir_pf_filter_count;
6151         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
6152             (pf->fd_add_err == 0) ||
6153             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
6154                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
6155                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
6156                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
6157                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6158                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
6159                 }
6160         }
6161
6162         /* Wait for some more space to be available to turn on ATR. We also
6163          * must check that no existing ntuple rules for TCP are in effect
6164          */
6165         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
6166                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
6167                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED) &&
6168                     (pf->fd_tcp_rule == 0)) {
6169                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6170                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6171                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
6172                 }
6173         }
6174
6175         /* if hw had a problem adding a filter, delete it */
6176         if (pf->fd_inv > 0) {
6177                 hlist_for_each_entry_safe(filter, node,
6178                                           &pf->fdir_filter_list, fdir_node) {
6179                         if (filter->fd_id == pf->fd_inv) {
6180                                 hlist_del(&filter->fdir_node);
6181                                 kfree(filter);
6182                                 pf->fdir_pf_active_filters--;
6183                         }
6184                 }
6185         }
6186 }
6187
6188 #define I40E_MIN_FD_FLUSH_INTERVAL 10
6189 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
6190 /**
6191  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
6192  * @pf: board private structure
6193  **/
6194 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
6195 {
6196         unsigned long min_flush_time;
6197         int flush_wait_retry = 50;
6198         bool disable_atr = false;
6199         int fd_room;
6200         int reg;
6201
6202         if (!time_after(jiffies, pf->fd_flush_timestamp +
6203                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
6204                 return;
6205
6206         /* If the flush is happening too quick and we have mostly SB rules we
6207          * should not re-enable ATR for some time.
6208          */
6209         min_flush_time = pf->fd_flush_timestamp +
6210                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
6211         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
6212
6213         if (!(time_after(jiffies, min_flush_time)) &&
6214             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
6215                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6216                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
6217                 disable_atr = true;
6218         }
6219
6220         pf->fd_flush_timestamp = jiffies;
6221         pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED;
6222         /* flush all filters */
6223         wr32(&pf->hw, I40E_PFQF_CTL_1,
6224              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6225         i40e_flush(&pf->hw);
6226         pf->fd_flush_cnt++;
6227         pf->fd_add_err = 0;
6228         do {
6229                 /* Check FD flush status every 5-6msec */
6230                 usleep_range(5000, 6000);
6231                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6232                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6233                         break;
6234         } while (flush_wait_retry--);
6235         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6236                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6237         } else {
6238                 /* replay sideband filters */
6239                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6240                 if (!disable_atr)
6241                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6242                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6243                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6244                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6245         }
6246 }
6247
6248 /**
6249  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6250  * @pf: board private structure
6251  **/
6252 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6253 {
6254         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6255 }
6256
6257 /* We can see up to 256 filter programming desc in transit if the filters are
6258  * being applied really fast; before we see the first
6259  * filter miss error on Rx queue 0. Accumulating enough error messages before
6260  * reacting will make sure we don't cause flush too often.
6261  */
6262 #define I40E_MAX_FD_PROGRAM_ERROR 256
6263
6264 /**
6265  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6266  * @pf: board private structure
6267  **/
6268 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6269 {
6270
6271         /* if interface is down do nothing */
6272         if (test_bit(__I40E_DOWN, &pf->state))
6273                 return;
6274
6275         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6276                 i40e_fdir_flush_and_replay(pf);
6277
6278         i40e_fdir_check_and_reenable(pf);
6279
6280 }
6281
6282 /**
6283  * i40e_vsi_link_event - notify VSI of a link event
6284  * @vsi: vsi to be notified
6285  * @link_up: link up or down
6286  **/
6287 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6288 {
6289         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6290                 return;
6291
6292         switch (vsi->type) {
6293         case I40E_VSI_MAIN:
6294 #ifdef I40E_FCOE
6295         case I40E_VSI_FCOE:
6296 #endif
6297                 if (!vsi->netdev || !vsi->netdev_registered)
6298                         break;
6299
6300                 if (link_up) {
6301                         netif_carrier_on(vsi->netdev);
6302                         netif_tx_wake_all_queues(vsi->netdev);
6303                 } else {
6304                         netif_carrier_off(vsi->netdev);
6305                         netif_tx_stop_all_queues(vsi->netdev);
6306                 }
6307                 break;
6308
6309         case I40E_VSI_SRIOV:
6310         case I40E_VSI_VMDQ2:
6311         case I40E_VSI_CTRL:
6312         case I40E_VSI_IWARP:
6313         case I40E_VSI_MIRROR:
6314         default:
6315                 /* there is no notification for other VSIs */
6316                 break;
6317         }
6318 }
6319
6320 /**
6321  * i40e_veb_link_event - notify elements on the veb of a link event
6322  * @veb: veb to be notified
6323  * @link_up: link up or down
6324  **/
6325 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6326 {
6327         struct i40e_pf *pf;
6328         int i;
6329
6330         if (!veb || !veb->pf)
6331                 return;
6332         pf = veb->pf;
6333
6334         /* depth first... */
6335         for (i = 0; i < I40E_MAX_VEB; i++)
6336                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6337                         i40e_veb_link_event(pf->veb[i], link_up);
6338
6339         /* ... now the local VSIs */
6340         for (i = 0; i < pf->num_alloc_vsi; i++)
6341                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6342                         i40e_vsi_link_event(pf->vsi[i], link_up);
6343 }
6344
6345 /**
6346  * i40e_link_event - Update netif_carrier status
6347  * @pf: board private structure
6348  **/
6349 static void i40e_link_event(struct i40e_pf *pf)
6350 {
6351         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6352         u8 new_link_speed, old_link_speed;
6353         i40e_status status;
6354         bool new_link, old_link;
6355
6356         /* save off old link status information */
6357         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6358
6359         /* set this to force the get_link_status call to refresh state */
6360         pf->hw.phy.get_link_info = true;
6361
6362         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6363
6364         status = i40e_get_link_status(&pf->hw, &new_link);
6365
6366         /* On success, disable temp link polling */
6367         if (status == I40E_SUCCESS) {
6368                 if (pf->flags & I40E_FLAG_TEMP_LINK_POLLING)
6369                         pf->flags &= ~I40E_FLAG_TEMP_LINK_POLLING;
6370         } else {
6371                 /* Enable link polling temporarily until i40e_get_link_status
6372                  * returns I40E_SUCCESS
6373                  */
6374                 pf->flags |= I40E_FLAG_TEMP_LINK_POLLING;
6375                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6376                         status);
6377                 return;
6378         }
6379
6380         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6381         new_link_speed = pf->hw.phy.link_info.link_speed;
6382
6383         if (new_link == old_link &&
6384             new_link_speed == old_link_speed &&
6385             (test_bit(__I40E_DOWN, &vsi->state) ||
6386              new_link == netif_carrier_ok(vsi->netdev)))
6387                 return;
6388
6389         if (!test_bit(__I40E_DOWN, &vsi->state))
6390                 i40e_print_link_message(vsi, new_link);
6391
6392         /* Notify the base of the switch tree connected to
6393          * the link.  Floating VEBs are not notified.
6394          */
6395         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6396                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6397         else
6398                 i40e_vsi_link_event(vsi, new_link);
6399
6400         if (pf->vf)
6401                 i40e_vc_notify_link_state(pf);
6402
6403         if (pf->flags & I40E_FLAG_PTP)
6404                 i40e_ptp_set_increment(pf);
6405 }
6406
6407 /**
6408  * i40e_watchdog_subtask - periodic checks not using event driven response
6409  * @pf: board private structure
6410  **/
6411 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6412 {
6413         int i;
6414
6415         /* if interface is down do nothing */
6416         if (test_bit(__I40E_DOWN, &pf->state) ||
6417             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6418                 return;
6419
6420         /* make sure we don't do these things too often */
6421         if (time_before(jiffies, (pf->service_timer_previous +
6422                                   pf->service_timer_period)))
6423                 return;
6424         pf->service_timer_previous = jiffies;
6425
6426         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
6427             (pf->flags & I40E_FLAG_TEMP_LINK_POLLING))
6428                 i40e_link_event(pf);
6429
6430         /* Update the stats for active netdevs so the network stack
6431          * can look at updated numbers whenever it cares to
6432          */
6433         for (i = 0; i < pf->num_alloc_vsi; i++)
6434                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6435                         i40e_update_stats(pf->vsi[i]);
6436
6437         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6438                 /* Update the stats for the active switching components */
6439                 for (i = 0; i < I40E_MAX_VEB; i++)
6440                         if (pf->veb[i])
6441                                 i40e_update_veb_stats(pf->veb[i]);
6442         }
6443
6444         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6445 }
6446
6447 /**
6448  * i40e_reset_subtask - Set up for resetting the device and driver
6449  * @pf: board private structure
6450  **/
6451 static void i40e_reset_subtask(struct i40e_pf *pf)
6452 {
6453         u32 reset_flags = 0;
6454
6455         rtnl_lock();
6456         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6457                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6458                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6459         }
6460         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6461                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6462                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6463         }
6464         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6465                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6466                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6467         }
6468         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6469                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6470                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6471         }
6472         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6473                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6474                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6475         }
6476
6477         /* If there's a recovery already waiting, it takes
6478          * precedence before starting a new reset sequence.
6479          */
6480         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6481                 i40e_handle_reset_warning(pf);
6482                 goto unlock;
6483         }
6484
6485         /* If we're already down or resetting, just bail */
6486         if (reset_flags &&
6487             !test_bit(__I40E_DOWN, &pf->state) &&
6488             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6489                 i40e_do_reset(pf, reset_flags);
6490
6491 unlock:
6492         rtnl_unlock();
6493 }
6494
6495 /**
6496  * i40e_handle_link_event - Handle link event
6497  * @pf: board private structure
6498  * @e: event info posted on ARQ
6499  **/
6500 static void i40e_handle_link_event(struct i40e_pf *pf,
6501                                    struct i40e_arq_event_info *e)
6502 {
6503         struct i40e_aqc_get_link_status *status =
6504                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6505
6506         /* Do a new status request to re-enable LSE reporting
6507          * and load new status information into the hw struct
6508          * This completely ignores any state information
6509          * in the ARQ event info, instead choosing to always
6510          * issue the AQ update link status command.
6511          */
6512         i40e_link_event(pf);
6513
6514         /* check for unqualified module, if link is down */
6515         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6516             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6517             (!(status->link_info & I40E_AQ_LINK_UP)))
6518                 dev_err(&pf->pdev->dev,
6519                         "The driver failed to link because an unqualified module was detected.\n");
6520 }
6521
6522 /**
6523  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6524  * @pf: board private structure
6525  **/
6526 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6527 {
6528         struct i40e_arq_event_info event;
6529         struct i40e_hw *hw = &pf->hw;
6530         u16 pending, i = 0;
6531         i40e_status ret;
6532         u16 opcode;
6533         u32 oldval;
6534         u32 val;
6535
6536         /* Do not run clean AQ when PF reset fails */
6537         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6538                 return;
6539
6540         /* check for error indications */
6541         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6542         oldval = val;
6543         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6544                 if (hw->debug_mask & I40E_DEBUG_AQ)
6545                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6546                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6547         }
6548         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6549                 if (hw->debug_mask & I40E_DEBUG_AQ)
6550                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6551                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6552                 pf->arq_overflows++;
6553         }
6554         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6555                 if (hw->debug_mask & I40E_DEBUG_AQ)
6556                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6557                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6558         }
6559         if (oldval != val)
6560                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6561
6562         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6563         oldval = val;
6564         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6565                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6566                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6567                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6568         }
6569         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6570                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6571                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6572                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6573         }
6574         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6575                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6576                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6577                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6578         }
6579         if (oldval != val)
6580                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6581
6582         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6583         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6584         if (!event.msg_buf)
6585                 return;
6586
6587         do {
6588                 ret = i40e_clean_arq_element(hw, &event, &pending);
6589                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6590                         break;
6591                 else if (ret) {
6592                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6593                         break;
6594                 }
6595
6596                 opcode = le16_to_cpu(event.desc.opcode);
6597                 switch (opcode) {
6598
6599                 case i40e_aqc_opc_get_link_status:
6600                         i40e_handle_link_event(pf, &event);
6601                         break;
6602                 case i40e_aqc_opc_send_msg_to_pf:
6603                         ret = i40e_vc_process_vf_msg(pf,
6604                                         le16_to_cpu(event.desc.retval),
6605                                         le32_to_cpu(event.desc.cookie_high),
6606                                         le32_to_cpu(event.desc.cookie_low),
6607                                         event.msg_buf,
6608                                         event.msg_len);
6609                         break;
6610                 case i40e_aqc_opc_lldp_update_mib:
6611                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6612 #ifdef CONFIG_I40E_DCB
6613                         rtnl_lock();
6614                         ret = i40e_handle_lldp_event(pf, &event);
6615                         rtnl_unlock();
6616 #endif /* CONFIG_I40E_DCB */
6617                         break;
6618                 case i40e_aqc_opc_event_lan_overflow:
6619                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6620                         i40e_handle_lan_overflow_event(pf, &event);
6621                         break;
6622                 case i40e_aqc_opc_send_msg_to_peer:
6623                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6624                         break;
6625                 case i40e_aqc_opc_nvm_erase:
6626                 case i40e_aqc_opc_nvm_update:
6627                 case i40e_aqc_opc_oem_post_update:
6628                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6629                                    "ARQ NVM operation 0x%04x completed\n",
6630                                    opcode);
6631                         break;
6632                 default:
6633                         dev_info(&pf->pdev->dev,
6634                                  "ARQ: Unknown event 0x%04x ignored\n",
6635                                  opcode);
6636                         break;
6637                 }
6638         } while (pending && (i++ < pf->adminq_work_limit));
6639
6640         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6641         /* re-enable Admin queue interrupt cause */
6642         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6643         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6644         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6645         i40e_flush(hw);
6646
6647         kfree(event.msg_buf);
6648 }
6649
6650 /**
6651  * i40e_verify_eeprom - make sure eeprom is good to use
6652  * @pf: board private structure
6653  **/
6654 static void i40e_verify_eeprom(struct i40e_pf *pf)
6655 {
6656         int err;
6657
6658         err = i40e_diag_eeprom_test(&pf->hw);
6659         if (err) {
6660                 /* retry in case of garbage read */
6661                 err = i40e_diag_eeprom_test(&pf->hw);
6662                 if (err) {
6663                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6664                                  err);
6665                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6666                 }
6667         }
6668
6669         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6670                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6671                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6672         }
6673 }
6674
6675 /**
6676  * i40e_enable_pf_switch_lb
6677  * @pf: pointer to the PF structure
6678  *
6679  * enable switch loop back or die - no point in a return value
6680  **/
6681 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6682 {
6683         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6684         struct i40e_vsi_context ctxt;
6685         int ret;
6686
6687         ctxt.seid = pf->main_vsi_seid;
6688         ctxt.pf_num = pf->hw.pf_id;
6689         ctxt.vf_num = 0;
6690         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6691         if (ret) {
6692                 dev_info(&pf->pdev->dev,
6693                          "couldn't get PF vsi config, err %s aq_err %s\n",
6694                          i40e_stat_str(&pf->hw, ret),
6695                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6696                 return;
6697         }
6698         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6699         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6700         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6701
6702         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6703         if (ret) {
6704                 dev_info(&pf->pdev->dev,
6705                          "update vsi switch failed, err %s aq_err %s\n",
6706                          i40e_stat_str(&pf->hw, ret),
6707                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6708         }
6709 }
6710
6711 /**
6712  * i40e_disable_pf_switch_lb
6713  * @pf: pointer to the PF structure
6714  *
6715  * disable switch loop back or die - no point in a return value
6716  **/
6717 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6718 {
6719         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6720         struct i40e_vsi_context ctxt;
6721         int ret;
6722
6723         ctxt.seid = pf->main_vsi_seid;
6724         ctxt.pf_num = pf->hw.pf_id;
6725         ctxt.vf_num = 0;
6726         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6727         if (ret) {
6728                 dev_info(&pf->pdev->dev,
6729                          "couldn't get PF vsi config, err %s aq_err %s\n",
6730                          i40e_stat_str(&pf->hw, ret),
6731                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6732                 return;
6733         }
6734         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6735         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6736         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6737
6738         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6739         if (ret) {
6740                 dev_info(&pf->pdev->dev,
6741                          "update vsi switch failed, err %s aq_err %s\n",
6742                          i40e_stat_str(&pf->hw, ret),
6743                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6744         }
6745 }
6746
6747 /**
6748  * i40e_config_bridge_mode - Configure the HW bridge mode
6749  * @veb: pointer to the bridge instance
6750  *
6751  * Configure the loop back mode for the LAN VSI that is downlink to the
6752  * specified HW bridge instance. It is expected this function is called
6753  * when a new HW bridge is instantiated.
6754  **/
6755 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6756 {
6757         struct i40e_pf *pf = veb->pf;
6758
6759         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6760                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6761                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6762         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6763                 i40e_disable_pf_switch_lb(pf);
6764         else
6765                 i40e_enable_pf_switch_lb(pf);
6766 }
6767
6768 /**
6769  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6770  * @veb: pointer to the VEB instance
6771  *
6772  * This is a recursive function that first builds the attached VSIs then
6773  * recurses in to build the next layer of VEB.  We track the connections
6774  * through our own index numbers because the seid's from the HW could
6775  * change across the reset.
6776  **/
6777 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6778 {
6779         struct i40e_vsi *ctl_vsi = NULL;
6780         struct i40e_pf *pf = veb->pf;
6781         int v, veb_idx;
6782         int ret;
6783
6784         /* build VSI that owns this VEB, temporarily attached to base VEB */
6785         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6786                 if (pf->vsi[v] &&
6787                     pf->vsi[v]->veb_idx == veb->idx &&
6788                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6789                         ctl_vsi = pf->vsi[v];
6790                         break;
6791                 }
6792         }
6793         if (!ctl_vsi) {
6794                 dev_info(&pf->pdev->dev,
6795                          "missing owner VSI for veb_idx %d\n", veb->idx);
6796                 ret = -ENOENT;
6797                 goto end_reconstitute;
6798         }
6799         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6800                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6801         ret = i40e_add_vsi(ctl_vsi);
6802         if (ret) {
6803                 dev_info(&pf->pdev->dev,
6804                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6805                          veb->idx, ret);
6806                 goto end_reconstitute;
6807         }
6808         i40e_vsi_reset_stats(ctl_vsi);
6809
6810         /* create the VEB in the switch and move the VSI onto the VEB */
6811         ret = i40e_add_veb(veb, ctl_vsi);
6812         if (ret)
6813                 goto end_reconstitute;
6814
6815         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6816                 veb->bridge_mode = BRIDGE_MODE_VEB;
6817         else
6818                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6819         i40e_config_bridge_mode(veb);
6820
6821         /* create the remaining VSIs attached to this VEB */
6822         for (v = 0; v < pf->num_alloc_vsi; v++) {
6823                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6824                         continue;
6825
6826                 if (pf->vsi[v]->veb_idx == veb->idx) {
6827                         struct i40e_vsi *vsi = pf->vsi[v];
6828
6829                         vsi->uplink_seid = veb->seid;
6830                         ret = i40e_add_vsi(vsi);
6831                         if (ret) {
6832                                 dev_info(&pf->pdev->dev,
6833                                          "rebuild of vsi_idx %d failed: %d\n",
6834                                          v, ret);
6835                                 goto end_reconstitute;
6836                         }
6837                         i40e_vsi_reset_stats(vsi);
6838                 }
6839         }
6840
6841         /* create any VEBs attached to this VEB - RECURSION */
6842         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6843                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6844                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6845                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6846                         if (ret)
6847                                 break;
6848                 }
6849         }
6850
6851 end_reconstitute:
6852         return ret;
6853 }
6854
6855 /**
6856  * i40e_get_capabilities - get info about the HW
6857  * @pf: the PF struct
6858  **/
6859 static int i40e_get_capabilities(struct i40e_pf *pf)
6860 {
6861         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6862         u16 data_size;
6863         int buf_len;
6864         int err;
6865
6866         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6867         do {
6868                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6869                 if (!cap_buf)
6870                         return -ENOMEM;
6871
6872                 /* this loads the data into the hw struct for us */
6873                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6874                                             &data_size,
6875                                             i40e_aqc_opc_list_func_capabilities,
6876                                             NULL);
6877                 /* data loaded, buffer no longer needed */
6878                 kfree(cap_buf);
6879
6880                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6881                         /* retry with a larger buffer */
6882                         buf_len = data_size;
6883                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6884                         dev_info(&pf->pdev->dev,
6885                                  "capability discovery failed, err %s aq_err %s\n",
6886                                  i40e_stat_str(&pf->hw, err),
6887                                  i40e_aq_str(&pf->hw,
6888                                              pf->hw.aq.asq_last_status));
6889                         return -ENODEV;
6890                 }
6891         } while (err);
6892
6893         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6894                 dev_info(&pf->pdev->dev,
6895                          "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
6896                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6897                          pf->hw.func_caps.num_msix_vectors,
6898                          pf->hw.func_caps.num_msix_vectors_vf,
6899                          pf->hw.func_caps.fd_filters_guaranteed,
6900                          pf->hw.func_caps.fd_filters_best_effort,
6901                          pf->hw.func_caps.num_tx_qp,
6902                          pf->hw.func_caps.num_vsis);
6903
6904 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6905                        + pf->hw.func_caps.num_vfs)
6906         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6907                 dev_info(&pf->pdev->dev,
6908                          "got num_vsis %d, setting num_vsis to %d\n",
6909                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6910                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6911         }
6912
6913         return 0;
6914 }
6915
6916 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6917
6918 /**
6919  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6920  * @pf: board private structure
6921  **/
6922 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6923 {
6924         struct i40e_vsi *vsi;
6925
6926         /* quick workaround for an NVM issue that leaves a critical register
6927          * uninitialized
6928          */
6929         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6930                 static const u32 hkey[] = {
6931                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6932                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6933                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6934                         0x95b3a76d};
6935                 int i;
6936
6937                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6938                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6939         }
6940
6941         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6942                 return;
6943
6944         /* find existing VSI and see if it needs configuring */
6945         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6946
6947         /* create a new VSI if none exists */
6948         if (!vsi) {
6949                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6950                                      pf->vsi[pf->lan_vsi]->seid, 0);
6951                 if (!vsi) {
6952                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6953                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6954                         return;
6955                 }
6956         }
6957
6958         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6959 }
6960
6961 /**
6962  * i40e_fdir_teardown - release the Flow Director resources
6963  * @pf: board private structure
6964  **/
6965 static void i40e_fdir_teardown(struct i40e_pf *pf)
6966 {
6967         struct i40e_vsi *vsi;
6968
6969         i40e_fdir_filter_exit(pf);
6970         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6971         if (vsi)
6972                 i40e_vsi_release(vsi);
6973 }
6974
6975 /**
6976  * i40e_prep_for_reset - prep for the core to reset
6977  * @pf: board private structure
6978  *
6979  * Close up the VFs and other things in prep for PF Reset.
6980   **/
6981 static void i40e_prep_for_reset(struct i40e_pf *pf)
6982 {
6983         struct i40e_hw *hw = &pf->hw;
6984         i40e_status ret = 0;
6985         u32 v;
6986
6987         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6988         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6989                 return;
6990         if (i40e_check_asq_alive(&pf->hw))
6991                 i40e_vc_notify_reset(pf);
6992
6993         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6994
6995         /* quiesce the VSIs and their queues that are not already DOWN */
6996         i40e_pf_quiesce_all_vsi(pf);
6997
6998         for (v = 0; v < pf->num_alloc_vsi; v++) {
6999                 if (pf->vsi[v])
7000                         pf->vsi[v]->seid = 0;
7001         }
7002
7003         i40e_shutdown_adminq(&pf->hw);
7004
7005         /* call shutdown HMC */
7006         if (hw->hmc.hmc_obj) {
7007                 ret = i40e_shutdown_lan_hmc(hw);
7008                 if (ret)
7009                         dev_warn(&pf->pdev->dev,
7010                                  "shutdown_lan_hmc failed: %d\n", ret);
7011         }
7012 }
7013
7014 /**
7015  * i40e_send_version - update firmware with driver version
7016  * @pf: PF struct
7017  */
7018 static void i40e_send_version(struct i40e_pf *pf)
7019 {
7020         struct i40e_driver_version dv;
7021
7022         dv.major_version = DRV_VERSION_MAJOR;
7023         dv.minor_version = DRV_VERSION_MINOR;
7024         dv.build_version = DRV_VERSION_BUILD;
7025         dv.subbuild_version = 0;
7026         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
7027         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
7028 }
7029
7030 /**
7031  * i40e_reset_and_rebuild - reset and rebuild using a saved config
7032  * @pf: board private structure
7033  * @reinit: if the Main VSI needs to re-initialized.
7034  **/
7035 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
7036 {
7037         struct i40e_hw *hw = &pf->hw;
7038         u8 set_fc_aq_fail = 0;
7039         i40e_status ret;
7040         u32 val;
7041         u32 v;
7042
7043         /* Now we wait for GRST to settle out.
7044          * We don't have to delete the VEBs or VSIs from the hw switch
7045          * because the reset will make them disappear.
7046          */
7047         ret = i40e_pf_reset(hw);
7048         if (ret) {
7049                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
7050                 set_bit(__I40E_RESET_FAILED, &pf->state);
7051                 goto clear_recovery;
7052         }
7053         pf->pfr_count++;
7054
7055         if (test_bit(__I40E_DOWN, &pf->state))
7056                 goto clear_recovery;
7057         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
7058
7059         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
7060         ret = i40e_init_adminq(&pf->hw);
7061         if (ret) {
7062                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
7063                          i40e_stat_str(&pf->hw, ret),
7064                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7065                 goto clear_recovery;
7066         }
7067
7068         /* re-verify the eeprom if we just had an EMP reset */
7069         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
7070                 i40e_verify_eeprom(pf);
7071
7072         i40e_clear_pxe_mode(hw);
7073         ret = i40e_get_capabilities(pf);
7074         if (ret)
7075                 goto end_core_reset;
7076
7077         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
7078                                 hw->func_caps.num_rx_qp,
7079                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
7080         if (ret) {
7081                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
7082                 goto end_core_reset;
7083         }
7084         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
7085         if (ret) {
7086                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
7087                 goto end_core_reset;
7088         }
7089
7090 #ifdef CONFIG_I40E_DCB
7091         ret = i40e_init_pf_dcb(pf);
7092         if (ret) {
7093                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
7094                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
7095                 /* Continue without DCB enabled */
7096         }
7097 #endif /* CONFIG_I40E_DCB */
7098 #ifdef I40E_FCOE
7099         i40e_init_pf_fcoe(pf);
7100
7101 #endif
7102         /* do basic switch setup */
7103         ret = i40e_setup_pf_switch(pf, reinit);
7104         if (ret)
7105                 goto end_core_reset;
7106
7107         /* The driver only wants link up/down and module qualification
7108          * reports from firmware.  Note the negative logic.
7109          */
7110         ret = i40e_aq_set_phy_int_mask(&pf->hw,
7111                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
7112                                          I40E_AQ_EVENT_MEDIA_NA |
7113                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
7114         if (ret)
7115                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
7116                          i40e_stat_str(&pf->hw, ret),
7117                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7118
7119         /* make sure our flow control settings are restored */
7120         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
7121         if (ret)
7122                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
7123                         i40e_stat_str(&pf->hw, ret),
7124                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7125
7126         /* Rebuild the VSIs and VEBs that existed before reset.
7127          * They are still in our local switch element arrays, so only
7128          * need to rebuild the switch model in the HW.
7129          *
7130          * If there were VEBs but the reconstitution failed, we'll try
7131          * try to recover minimal use by getting the basic PF VSI working.
7132          */
7133         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
7134                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
7135                 /* find the one VEB connected to the MAC, and find orphans */
7136                 for (v = 0; v < I40E_MAX_VEB; v++) {
7137                         if (!pf->veb[v])
7138                                 continue;
7139
7140                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
7141                             pf->veb[v]->uplink_seid == 0) {
7142                                 ret = i40e_reconstitute_veb(pf->veb[v]);
7143
7144                                 if (!ret)
7145                                         continue;
7146
7147                                 /* If Main VEB failed, we're in deep doodoo,
7148                                  * so give up rebuilding the switch and set up
7149                                  * for minimal rebuild of PF VSI.
7150                                  * If orphan failed, we'll report the error
7151                                  * but try to keep going.
7152                                  */
7153                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
7154                                         dev_info(&pf->pdev->dev,
7155                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
7156                                                  ret);
7157                                         pf->vsi[pf->lan_vsi]->uplink_seid
7158                                                                 = pf->mac_seid;
7159                                         break;
7160                                 } else if (pf->veb[v]->uplink_seid == 0) {
7161                                         dev_info(&pf->pdev->dev,
7162                                                  "rebuild of orphan VEB failed: %d\n",
7163                                                  ret);
7164                                 }
7165                         }
7166                 }
7167         }
7168
7169         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
7170                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
7171                 /* no VEB, so rebuild only the Main VSI */
7172                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
7173                 if (ret) {
7174                         dev_info(&pf->pdev->dev,
7175                                  "rebuild of Main VSI failed: %d\n", ret);
7176                         goto end_core_reset;
7177                 }
7178         }
7179
7180         /* Reconfigure hardware for allowing smaller MSS in the case
7181          * of TSO, so that we avoid the MDD being fired and causing
7182          * a reset in the case of small MSS+TSO.
7183          */
7184 #define I40E_REG_MSS          0x000E64DC
7185 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
7186 #define I40E_64BYTE_MSS       0x400000
7187         val = rd32(hw, I40E_REG_MSS);
7188         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
7189                 val &= ~I40E_REG_MSS_MIN_MASK;
7190                 val |= I40E_64BYTE_MSS;
7191                 wr32(hw, I40E_REG_MSS, val);
7192         }
7193
7194         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
7195                 msleep(75);
7196                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
7197                 if (ret)
7198                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
7199                                  i40e_stat_str(&pf->hw, ret),
7200                                  i40e_aq_str(&pf->hw,
7201                                              pf->hw.aq.asq_last_status));
7202         }
7203         /* reinit the misc interrupt */
7204         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7205                 ret = i40e_setup_misc_vector(pf);
7206
7207         /* Add a filter to drop all Flow control frames from any VSI from being
7208          * transmitted. By doing so we stop a malicious VF from sending out
7209          * PAUSE or PFC frames and potentially controlling traffic for other
7210          * PF/VF VSIs.
7211          * The FW can still send Flow control frames if enabled.
7212          */
7213         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
7214                                                        pf->main_vsi_seid);
7215
7216         /* restart the VSIs that were rebuilt and running before the reset */
7217         i40e_pf_unquiesce_all_vsi(pf);
7218
7219         if (pf->num_alloc_vfs) {
7220                 for (v = 0; v < pf->num_alloc_vfs; v++)
7221                         i40e_reset_vf(&pf->vf[v], true);
7222         }
7223
7224         /* tell the firmware that we're starting */
7225         i40e_send_version(pf);
7226
7227 end_core_reset:
7228         clear_bit(__I40E_RESET_FAILED, &pf->state);
7229 clear_recovery:
7230         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7231 }
7232
7233 /**
7234  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7235  * @pf: board private structure
7236  *
7237  * Close up the VFs and other things in prep for a Core Reset,
7238  * then get ready to rebuild the world.
7239  **/
7240 static void i40e_handle_reset_warning(struct i40e_pf *pf)
7241 {
7242         i40e_prep_for_reset(pf);
7243         i40e_reset_and_rebuild(pf, false);
7244 }
7245
7246 /**
7247  * i40e_handle_mdd_event
7248  * @pf: pointer to the PF structure
7249  *
7250  * Called from the MDD irq handler to identify possibly malicious vfs
7251  **/
7252 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7253 {
7254         struct i40e_hw *hw = &pf->hw;
7255         bool mdd_detected = false;
7256         bool pf_mdd_detected = false;
7257         struct i40e_vf *vf;
7258         u32 reg;
7259         int i;
7260
7261         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7262                 return;
7263
7264         /* find what triggered the MDD event */
7265         reg = rd32(hw, I40E_GL_MDET_TX);
7266         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7267                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7268                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7269                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7270                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7271                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7272                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7273                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7274                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7275                                 pf->hw.func_caps.base_queue;
7276                 if (netif_msg_tx_err(pf))
7277                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7278                                  event, queue, pf_num, vf_num);
7279                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7280                 mdd_detected = true;
7281         }
7282         reg = rd32(hw, I40E_GL_MDET_RX);
7283         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7284                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7285                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7286                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7287                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7288                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7289                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7290                                 pf->hw.func_caps.base_queue;
7291                 if (netif_msg_rx_err(pf))
7292                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7293                                  event, queue, func);
7294                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7295                 mdd_detected = true;
7296         }
7297
7298         if (mdd_detected) {
7299                 reg = rd32(hw, I40E_PF_MDET_TX);
7300                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7301                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7302                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7303                         pf_mdd_detected = true;
7304                 }
7305                 reg = rd32(hw, I40E_PF_MDET_RX);
7306                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7307                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7308                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7309                         pf_mdd_detected = true;
7310                 }
7311                 /* Queue belongs to the PF, initiate a reset */
7312                 if (pf_mdd_detected) {
7313                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7314                         i40e_service_event_schedule(pf);
7315                 }
7316         }
7317
7318         /* see if one of the VFs needs its hand slapped */
7319         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7320                 vf = &(pf->vf[i]);
7321                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7322                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7323                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7324                         vf->num_mdd_events++;
7325                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7326                                  i);
7327                 }
7328
7329                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7330                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7331                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7332                         vf->num_mdd_events++;
7333                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7334                                  i);
7335                 }
7336
7337                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7338                         dev_info(&pf->pdev->dev,
7339                                  "Too many MDD events on VF %d, disabled\n", i);
7340                         dev_info(&pf->pdev->dev,
7341                                  "Use PF Control I/F to re-enable the VF\n");
7342                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7343                 }
7344         }
7345
7346         /* re-enable mdd interrupt cause */
7347         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7348         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7349         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7350         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7351         i40e_flush(hw);
7352 }
7353
7354 /**
7355  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7356  * @pf: board private structure
7357  **/
7358 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7359 {
7360         struct i40e_hw *hw = &pf->hw;
7361         i40e_status ret;
7362         __be16 port;
7363         int i;
7364
7365         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7366                 return;
7367
7368         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7369
7370         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7371                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7372                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7373                         port = pf->udp_ports[i].index;
7374                         if (port)
7375                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7376                                                         pf->udp_ports[i].type,
7377                                                         NULL, NULL);
7378                         else
7379                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7380
7381                         if (ret) {
7382                                 dev_dbg(&pf->pdev->dev,
7383                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7384                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7385                                         port ? "add" : "delete",
7386                                         ntohs(port), i,
7387                                         i40e_stat_str(&pf->hw, ret),
7388                                         i40e_aq_str(&pf->hw,
7389                                                     pf->hw.aq.asq_last_status));
7390                                 pf->udp_ports[i].index = 0;
7391                         }
7392                 }
7393         }
7394 }
7395
7396 /**
7397  * i40e_service_task - Run the driver's async subtasks
7398  * @work: pointer to work_struct containing our data
7399  **/
7400 static void i40e_service_task(struct work_struct *work)
7401 {
7402         struct i40e_pf *pf = container_of(work,
7403                                           struct i40e_pf,
7404                                           service_task);
7405         unsigned long start_time = jiffies;
7406
7407         /* don't bother with service tasks if a reset is in progress */
7408         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7409                 return;
7410         }
7411
7412         if (test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
7413                 return;
7414
7415         i40e_detect_recover_hung(pf);
7416         i40e_sync_filters_subtask(pf);
7417         i40e_reset_subtask(pf);
7418         i40e_handle_mdd_event(pf);
7419         i40e_vc_process_vflr_event(pf);
7420         i40e_watchdog_subtask(pf);
7421         i40e_fdir_reinit_subtask(pf);
7422         i40e_client_subtask(pf);
7423         i40e_sync_filters_subtask(pf);
7424         i40e_sync_udp_filters_subtask(pf);
7425         i40e_clean_adminq_subtask(pf);
7426
7427         /* flush memory to make sure state is correct before next watchdog */
7428         smp_mb__before_atomic();
7429         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7430
7431         /* If the tasks have taken longer than one timer cycle or there
7432          * is more work to be done, reschedule the service task now
7433          * rather than wait for the timer to tick again.
7434          */
7435         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7436             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7437             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7438             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7439                 i40e_service_event_schedule(pf);
7440 }
7441
7442 /**
7443  * i40e_service_timer - timer callback
7444  * @data: pointer to PF struct
7445  **/
7446 static void i40e_service_timer(unsigned long data)
7447 {
7448         struct i40e_pf *pf = (struct i40e_pf *)data;
7449
7450         mod_timer(&pf->service_timer,
7451                   round_jiffies(jiffies + pf->service_timer_period));
7452         i40e_service_event_schedule(pf);
7453 }
7454
7455 /**
7456  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7457  * @vsi: the VSI being configured
7458  **/
7459 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7460 {
7461         struct i40e_pf *pf = vsi->back;
7462
7463         switch (vsi->type) {
7464         case I40E_VSI_MAIN:
7465                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7466                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7467                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7468                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7469                         vsi->num_q_vectors = pf->num_lan_msix;
7470                 else
7471                         vsi->num_q_vectors = 1;
7472
7473                 break;
7474
7475         case I40E_VSI_FDIR:
7476                 vsi->alloc_queue_pairs = 1;
7477                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7478                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7479                 vsi->num_q_vectors = pf->num_fdsb_msix;
7480                 break;
7481
7482         case I40E_VSI_VMDQ2:
7483                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7484                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7485                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7486                 vsi->num_q_vectors = pf->num_vmdq_msix;
7487                 break;
7488
7489         case I40E_VSI_SRIOV:
7490                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7491                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7492                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7493                 break;
7494
7495 #ifdef I40E_FCOE
7496         case I40E_VSI_FCOE:
7497                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7498                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7499                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7500                 vsi->num_q_vectors = pf->num_fcoe_msix;
7501                 break;
7502
7503 #endif /* I40E_FCOE */
7504         default:
7505                 WARN_ON(1);
7506                 return -ENODATA;
7507         }
7508
7509         return 0;
7510 }
7511
7512 /**
7513  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7514  * @type: VSI pointer
7515  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7516  *
7517  * On error: returns error code (negative)
7518  * On success: returns 0
7519  **/
7520 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7521 {
7522         int size;
7523         int ret = 0;
7524
7525         /* allocate memory for both Tx and Rx ring pointers */
7526         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7527         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7528         if (!vsi->tx_rings)
7529                 return -ENOMEM;
7530         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7531
7532         if (alloc_qvectors) {
7533                 /* allocate memory for q_vector pointers */
7534                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7535                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7536                 if (!vsi->q_vectors) {
7537                         ret = -ENOMEM;
7538                         goto err_vectors;
7539                 }
7540         }
7541         return ret;
7542
7543 err_vectors:
7544         kfree(vsi->tx_rings);
7545         return ret;
7546 }
7547
7548 /**
7549  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7550  * @pf: board private structure
7551  * @type: type of VSI
7552  *
7553  * On error: returns error code (negative)
7554  * On success: returns vsi index in PF (positive)
7555  **/
7556 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7557 {
7558         int ret = -ENODEV;
7559         struct i40e_vsi *vsi;
7560         int vsi_idx;
7561         int i;
7562
7563         /* Need to protect the allocation of the VSIs at the PF level */
7564         mutex_lock(&pf->switch_mutex);
7565
7566         /* VSI list may be fragmented if VSI creation/destruction has
7567          * been happening.  We can afford to do a quick scan to look
7568          * for any free VSIs in the list.
7569          *
7570          * find next empty vsi slot, looping back around if necessary
7571          */
7572         i = pf->next_vsi;
7573         while (i < pf->num_alloc_vsi && pf->vsi[i])
7574                 i++;
7575         if (i >= pf->num_alloc_vsi) {
7576                 i = 0;
7577                 while (i < pf->next_vsi && pf->vsi[i])
7578                         i++;
7579         }
7580
7581         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7582                 vsi_idx = i;             /* Found one! */
7583         } else {
7584                 ret = -ENODEV;
7585                 goto unlock_pf;  /* out of VSI slots! */
7586         }
7587         pf->next_vsi = ++i;
7588
7589         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7590         if (!vsi) {
7591                 ret = -ENOMEM;
7592                 goto unlock_pf;
7593         }
7594         vsi->type = type;
7595         vsi->back = pf;
7596         set_bit(__I40E_DOWN, &vsi->state);
7597         vsi->flags = 0;
7598         vsi->idx = vsi_idx;
7599         vsi->int_rate_limit = 0;
7600         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7601                                 pf->rss_table_size : 64;
7602         vsi->netdev_registered = false;
7603         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7604         hash_init(vsi->mac_filter_hash);
7605         vsi->irqs_ready = false;
7606
7607         ret = i40e_set_num_rings_in_vsi(vsi);
7608         if (ret)
7609                 goto err_rings;
7610
7611         ret = i40e_vsi_alloc_arrays(vsi, true);
7612         if (ret)
7613                 goto err_rings;
7614
7615         /* Setup default MSIX irq handler for VSI */
7616         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7617
7618         /* Initialize VSI lock */
7619         spin_lock_init(&vsi->mac_filter_hash_lock);
7620         pf->vsi[vsi_idx] = vsi;
7621         ret = vsi_idx;
7622         goto unlock_pf;
7623
7624 err_rings:
7625         pf->next_vsi = i - 1;
7626         kfree(vsi);
7627 unlock_pf:
7628         mutex_unlock(&pf->switch_mutex);
7629         return ret;
7630 }
7631
7632 /**
7633  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7634  * @type: VSI pointer
7635  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7636  *
7637  * On error: returns error code (negative)
7638  * On success: returns 0
7639  **/
7640 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7641 {
7642         /* free the ring and vector containers */
7643         if (free_qvectors) {
7644                 kfree(vsi->q_vectors);
7645                 vsi->q_vectors = NULL;
7646         }
7647         kfree(vsi->tx_rings);
7648         vsi->tx_rings = NULL;
7649         vsi->rx_rings = NULL;
7650 }
7651
7652 /**
7653  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7654  * and lookup table
7655  * @vsi: Pointer to VSI structure
7656  */
7657 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7658 {
7659         if (!vsi)
7660                 return;
7661
7662         kfree(vsi->rss_hkey_user);
7663         vsi->rss_hkey_user = NULL;
7664
7665         kfree(vsi->rss_lut_user);
7666         vsi->rss_lut_user = NULL;
7667 }
7668
7669 /**
7670  * i40e_vsi_clear - Deallocate the VSI provided
7671  * @vsi: the VSI being un-configured
7672  **/
7673 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7674 {
7675         struct i40e_pf *pf;
7676
7677         if (!vsi)
7678                 return 0;
7679
7680         if (!vsi->back)
7681                 goto free_vsi;
7682         pf = vsi->back;
7683
7684         mutex_lock(&pf->switch_mutex);
7685         if (!pf->vsi[vsi->idx]) {
7686                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7687                         vsi->idx, vsi->idx, vsi, vsi->type);
7688                 goto unlock_vsi;
7689         }
7690
7691         if (pf->vsi[vsi->idx] != vsi) {
7692                 dev_err(&pf->pdev->dev,
7693                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7694                         pf->vsi[vsi->idx]->idx,
7695                         pf->vsi[vsi->idx],
7696                         pf->vsi[vsi->idx]->type,
7697                         vsi->idx, vsi, vsi->type);
7698                 goto unlock_vsi;
7699         }
7700
7701         /* updates the PF for this cleared vsi */
7702         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7703         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7704
7705         i40e_vsi_free_arrays(vsi, true);
7706         i40e_clear_rss_config_user(vsi);
7707
7708         pf->vsi[vsi->idx] = NULL;
7709         if (vsi->idx < pf->next_vsi)
7710                 pf->next_vsi = vsi->idx;
7711
7712 unlock_vsi:
7713         mutex_unlock(&pf->switch_mutex);
7714 free_vsi:
7715         kfree(vsi);
7716
7717         return 0;
7718 }
7719
7720 /**
7721  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7722  * @vsi: the VSI being cleaned
7723  **/
7724 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7725 {
7726         int i;
7727
7728         if (vsi->tx_rings && vsi->tx_rings[0]) {
7729                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7730                         kfree_rcu(vsi->tx_rings[i], rcu);
7731                         vsi->tx_rings[i] = NULL;
7732                         vsi->rx_rings[i] = NULL;
7733                 }
7734         }
7735 }
7736
7737 /**
7738  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7739  * @vsi: the VSI being configured
7740  **/
7741 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7742 {
7743         struct i40e_ring *tx_ring, *rx_ring;
7744         struct i40e_pf *pf = vsi->back;
7745         int i;
7746
7747         /* Set basic values in the rings to be used later during open() */
7748         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7749                 /* allocate space for both Tx and Rx in one shot */
7750                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7751                 if (!tx_ring)
7752                         goto err_out;
7753
7754                 tx_ring->queue_index = i;
7755                 tx_ring->reg_idx = vsi->base_queue + i;
7756                 tx_ring->ring_active = false;
7757                 tx_ring->vsi = vsi;
7758                 tx_ring->netdev = vsi->netdev;
7759                 tx_ring->dev = &pf->pdev->dev;
7760                 tx_ring->count = vsi->num_desc;
7761                 tx_ring->size = 0;
7762                 tx_ring->dcb_tc = 0;
7763                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7764                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7765                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7766                 vsi->tx_rings[i] = tx_ring;
7767
7768                 rx_ring = &tx_ring[1];
7769                 rx_ring->queue_index = i;
7770                 rx_ring->reg_idx = vsi->base_queue + i;
7771                 rx_ring->ring_active = false;
7772                 rx_ring->vsi = vsi;
7773                 rx_ring->netdev = vsi->netdev;
7774                 rx_ring->dev = &pf->pdev->dev;
7775                 rx_ring->count = vsi->num_desc;
7776                 rx_ring->size = 0;
7777                 rx_ring->dcb_tc = 0;
7778                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7779                 vsi->rx_rings[i] = rx_ring;
7780         }
7781
7782         return 0;
7783
7784 err_out:
7785         i40e_vsi_clear_rings(vsi);
7786         return -ENOMEM;
7787 }
7788
7789 /**
7790  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7791  * @pf: board private structure
7792  * @vectors: the number of MSI-X vectors to request
7793  *
7794  * Returns the number of vectors reserved, or error
7795  **/
7796 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7797 {
7798         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7799                                         I40E_MIN_MSIX, vectors);
7800         if (vectors < 0) {
7801                 dev_info(&pf->pdev->dev,
7802                          "MSI-X vector reservation failed: %d\n", vectors);
7803                 vectors = 0;
7804         }
7805
7806         return vectors;
7807 }
7808
7809 /**
7810  * i40e_init_msix - Setup the MSIX capability
7811  * @pf: board private structure
7812  *
7813  * Work with the OS to set up the MSIX vectors needed.
7814  *
7815  * Returns the number of vectors reserved or negative on failure
7816  **/
7817 static int i40e_init_msix(struct i40e_pf *pf)
7818 {
7819         struct i40e_hw *hw = &pf->hw;
7820         int vectors_left;
7821         int v_budget, i;
7822         int v_actual;
7823         int iwarp_requested = 0;
7824
7825         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7826                 return -ENODEV;
7827
7828         /* The number of vectors we'll request will be comprised of:
7829          *   - Add 1 for "other" cause for Admin Queue events, etc.
7830          *   - The number of LAN queue pairs
7831          *      - Queues being used for RSS.
7832          *              We don't need as many as max_rss_size vectors.
7833          *              use rss_size instead in the calculation since that
7834          *              is governed by number of cpus in the system.
7835          *      - assumes symmetric Tx/Rx pairing
7836          *   - The number of VMDq pairs
7837          *   - The CPU count within the NUMA node if iWARP is enabled
7838 #ifdef I40E_FCOE
7839          *   - The number of FCOE qps.
7840 #endif
7841          * Once we count this up, try the request.
7842          *
7843          * If we can't get what we want, we'll simplify to nearly nothing
7844          * and try again.  If that still fails, we punt.
7845          */
7846         vectors_left = hw->func_caps.num_msix_vectors;
7847         v_budget = 0;
7848
7849         /* reserve one vector for miscellaneous handler */
7850         if (vectors_left) {
7851                 v_budget++;
7852                 vectors_left--;
7853         }
7854
7855         /* reserve vectors for the main PF traffic queues */
7856         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7857         vectors_left -= pf->num_lan_msix;
7858         v_budget += pf->num_lan_msix;
7859
7860         /* reserve one vector for sideband flow director */
7861         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7862                 if (vectors_left) {
7863                         pf->num_fdsb_msix = 1;
7864                         v_budget++;
7865                         vectors_left--;
7866                 } else {
7867                         pf->num_fdsb_msix = 0;
7868                 }
7869         }
7870
7871 #ifdef I40E_FCOE
7872         /* can we reserve enough for FCoE? */
7873         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7874                 if (!vectors_left)
7875                         pf->num_fcoe_msix = 0;
7876                 else if (vectors_left >= pf->num_fcoe_qps)
7877                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7878                 else
7879                         pf->num_fcoe_msix = 1;
7880                 v_budget += pf->num_fcoe_msix;
7881                 vectors_left -= pf->num_fcoe_msix;
7882         }
7883
7884 #endif
7885         /* can we reserve enough for iWARP? */
7886         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7887                 iwarp_requested = pf->num_iwarp_msix;
7888
7889                 if (!vectors_left)
7890                         pf->num_iwarp_msix = 0;
7891                 else if (vectors_left < pf->num_iwarp_msix)
7892                         pf->num_iwarp_msix = 1;
7893                 v_budget += pf->num_iwarp_msix;
7894                 vectors_left -= pf->num_iwarp_msix;
7895         }
7896
7897         /* any vectors left over go for VMDq support */
7898         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7899                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7900                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7901
7902                 if (!vectors_left) {
7903                         pf->num_vmdq_msix = 0;
7904                         pf->num_vmdq_qps = 0;
7905                 } else {
7906                         /* if we're short on vectors for what's desired, we limit
7907                          * the queues per vmdq.  If this is still more than are
7908                          * available, the user will need to change the number of
7909                          * queues/vectors used by the PF later with the ethtool
7910                          * channels command
7911                          */
7912                         if (vmdq_vecs < vmdq_vecs_wanted)
7913                                 pf->num_vmdq_qps = 1;
7914                         pf->num_vmdq_msix = pf->num_vmdq_qps;
7915
7916                         v_budget += vmdq_vecs;
7917                         vectors_left -= vmdq_vecs;
7918                 }
7919         }
7920
7921         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7922                                    GFP_KERNEL);
7923         if (!pf->msix_entries)
7924                 return -ENOMEM;
7925
7926         for (i = 0; i < v_budget; i++)
7927                 pf->msix_entries[i].entry = i;
7928         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7929
7930         if (v_actual < I40E_MIN_MSIX) {
7931                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7932                 kfree(pf->msix_entries);
7933                 pf->msix_entries = NULL;
7934                 pci_disable_msix(pf->pdev);
7935                 return -ENODEV;
7936
7937         } else if (v_actual == I40E_MIN_MSIX) {
7938                 /* Adjust for minimal MSIX use */
7939                 pf->num_vmdq_vsis = 0;
7940                 pf->num_vmdq_qps = 0;
7941                 pf->num_lan_qps = 1;
7942                 pf->num_lan_msix = 1;
7943
7944         } else if (!vectors_left) {
7945                 /* If we have limited resources, we will start with no vectors
7946                  * for the special features and then allocate vectors to some
7947                  * of these features based on the policy and at the end disable
7948                  * the features that did not get any vectors.
7949                  */
7950                 int vec;
7951
7952                 dev_info(&pf->pdev->dev,
7953                          "MSI-X vector limit reached, attempting to redistribute vectors\n");
7954                 /* reserve the misc vector */
7955                 vec = v_actual - 1;
7956
7957                 /* Scale vector usage down */
7958                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7959                 pf->num_vmdq_vsis = 1;
7960                 pf->num_vmdq_qps = 1;
7961 #ifdef I40E_FCOE
7962                 pf->num_fcoe_qps = 0;
7963                 pf->num_fcoe_msix = 0;
7964 #endif
7965
7966                 /* partition out the remaining vectors */
7967                 switch (vec) {
7968                 case 2:
7969                         pf->num_lan_msix = 1;
7970                         break;
7971                 case 3:
7972                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7973                                 pf->num_lan_msix = 1;
7974                                 pf->num_iwarp_msix = 1;
7975                         } else {
7976                                 pf->num_lan_msix = 2;
7977                         }
7978 #ifdef I40E_FCOE
7979                         /* give one vector to FCoE */
7980                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7981                                 pf->num_lan_msix = 1;
7982                                 pf->num_fcoe_msix = 1;
7983                         }
7984 #endif
7985                         break;
7986                 default:
7987                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7988                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7989                                                  iwarp_requested);
7990                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7991                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7992                         } else {
7993                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7994                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7995                         }
7996                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7997                                 pf->num_fdsb_msix = 1;
7998                                 vec--;
7999                         }
8000                         pf->num_lan_msix = min_t(int,
8001                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
8002                                                               pf->num_lan_msix);
8003                         pf->num_lan_qps = pf->num_lan_msix;
8004 #ifdef I40E_FCOE
8005                         /* give one vector to FCoE */
8006                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8007                                 pf->num_fcoe_msix = 1;
8008                                 vec--;
8009                         }
8010 #endif
8011                         break;
8012                 }
8013         }
8014
8015         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
8016             (pf->num_fdsb_msix == 0)) {
8017                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
8018                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8019         }
8020         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8021             (pf->num_vmdq_msix == 0)) {
8022                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
8023                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
8024         }
8025
8026         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
8027             (pf->num_iwarp_msix == 0)) {
8028                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
8029                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
8030         }
8031 #ifdef I40E_FCOE
8032
8033         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
8034                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
8035                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8036         }
8037 #endif
8038         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
8039                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
8040                    pf->num_lan_msix,
8041                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
8042                    pf->num_fdsb_msix,
8043                    pf->num_iwarp_msix);
8044
8045         return v_actual;
8046 }
8047
8048 /**
8049  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
8050  * @vsi: the VSI being configured
8051  * @v_idx: index of the vector in the vsi struct
8052  * @cpu: cpu to be used on affinity_mask
8053  *
8054  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
8055  **/
8056 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
8057 {
8058         struct i40e_q_vector *q_vector;
8059
8060         /* allocate q_vector */
8061         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
8062         if (!q_vector)
8063                 return -ENOMEM;
8064
8065         q_vector->vsi = vsi;
8066         q_vector->v_idx = v_idx;
8067         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
8068
8069         if (vsi->netdev)
8070                 netif_napi_add(vsi->netdev, &q_vector->napi,
8071                                i40e_napi_poll, NAPI_POLL_WEIGHT);
8072
8073         q_vector->rx.latency_range = I40E_LOW_LATENCY;
8074         q_vector->tx.latency_range = I40E_LOW_LATENCY;
8075
8076         /* tie q_vector and vsi together */
8077         vsi->q_vectors[v_idx] = q_vector;
8078
8079         return 0;
8080 }
8081
8082 /**
8083  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
8084  * @vsi: the VSI being configured
8085  *
8086  * We allocate one q_vector per queue interrupt.  If allocation fails we
8087  * return -ENOMEM.
8088  **/
8089 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
8090 {
8091         struct i40e_pf *pf = vsi->back;
8092         int err, v_idx, num_q_vectors, current_cpu;
8093
8094         /* if not MSIX, give the one vector only to the LAN VSI */
8095         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
8096                 num_q_vectors = vsi->num_q_vectors;
8097         else if (vsi == pf->vsi[pf->lan_vsi])
8098                 num_q_vectors = 1;
8099         else
8100                 return -EINVAL;
8101
8102         current_cpu = cpumask_first(cpu_online_mask);
8103
8104         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
8105                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
8106                 if (err)
8107                         goto err_out;
8108                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
8109                 if (unlikely(current_cpu >= nr_cpu_ids))
8110                         current_cpu = cpumask_first(cpu_online_mask);
8111         }
8112
8113         return 0;
8114
8115 err_out:
8116         while (v_idx--)
8117                 i40e_free_q_vector(vsi, v_idx);
8118
8119         return err;
8120 }
8121
8122 /**
8123  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
8124  * @pf: board private structure to initialize
8125  **/
8126 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
8127 {
8128         int vectors = 0;
8129         ssize_t size;
8130
8131         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8132                 vectors = i40e_init_msix(pf);
8133                 if (vectors < 0) {
8134                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
8135                                        I40E_FLAG_IWARP_ENABLED  |
8136 #ifdef I40E_FCOE
8137                                        I40E_FLAG_FCOE_ENABLED   |
8138 #endif
8139                                        I40E_FLAG_RSS_ENABLED    |
8140                                        I40E_FLAG_DCB_CAPABLE    |
8141                                        I40E_FLAG_DCB_ENABLED    |
8142                                        I40E_FLAG_SRIOV_ENABLED  |
8143                                        I40E_FLAG_FD_SB_ENABLED  |
8144                                        I40E_FLAG_FD_ATR_ENABLED |
8145                                        I40E_FLAG_VMDQ_ENABLED);
8146
8147                         /* rework the queue expectations without MSIX */
8148                         i40e_determine_queue_usage(pf);
8149                 }
8150         }
8151
8152         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8153             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
8154                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
8155                 vectors = pci_enable_msi(pf->pdev);
8156                 if (vectors < 0) {
8157                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
8158                                  vectors);
8159                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
8160                 }
8161                 vectors = 1;  /* one MSI or Legacy vector */
8162         }
8163
8164         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
8165                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
8166
8167         /* set up vector assignment tracking */
8168         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
8169         pf->irq_pile = kzalloc(size, GFP_KERNEL);
8170         if (!pf->irq_pile) {
8171                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
8172                 return -ENOMEM;
8173         }
8174         pf->irq_pile->num_entries = vectors;
8175         pf->irq_pile->search_hint = 0;
8176
8177         /* track first vector for misc interrupts, ignore return */
8178         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
8179
8180         return 0;
8181 }
8182
8183 /**
8184  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
8185  * @pf: board private structure
8186  *
8187  * This sets up the handler for MSIX 0, which is used to manage the
8188  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
8189  * when in MSI or Legacy interrupt mode.
8190  **/
8191 static int i40e_setup_misc_vector(struct i40e_pf *pf)
8192 {
8193         struct i40e_hw *hw = &pf->hw;
8194         int err = 0;
8195
8196         /* Only request the irq if this is the first time through, and
8197          * not when we're rebuilding after a Reset
8198          */
8199         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
8200                 err = request_irq(pf->msix_entries[0].vector,
8201                                   i40e_intr, 0, pf->int_name, pf);
8202                 if (err) {
8203                         dev_info(&pf->pdev->dev,
8204                                  "request_irq for %s failed: %d\n",
8205                                  pf->int_name, err);
8206                         return -EFAULT;
8207                 }
8208         }
8209
8210         i40e_enable_misc_int_causes(pf);
8211
8212         /* associate no queues to the misc vector */
8213         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
8214         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
8215
8216         i40e_flush(hw);
8217
8218         i40e_irq_dynamic_enable_icr0(pf, true);
8219
8220         return err;
8221 }
8222
8223 /**
8224  * i40e_config_rss_aq - Prepare for RSS using AQ commands
8225  * @vsi: vsi structure
8226  * @seed: RSS hash seed
8227  **/
8228 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8229                               u8 *lut, u16 lut_size)
8230 {
8231         struct i40e_pf *pf = vsi->back;
8232         struct i40e_hw *hw = &pf->hw;
8233         int ret = 0;
8234
8235         if (seed) {
8236                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
8237                         (struct i40e_aqc_get_set_rss_key_data *)seed;
8238                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
8239                 if (ret) {
8240                         dev_info(&pf->pdev->dev,
8241                                  "Cannot set RSS key, err %s aq_err %s\n",
8242                                  i40e_stat_str(hw, ret),
8243                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8244                         return ret;
8245                 }
8246         }
8247         if (lut) {
8248                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8249
8250                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8251                 if (ret) {
8252                         dev_info(&pf->pdev->dev,
8253                                  "Cannot set RSS lut, err %s aq_err %s\n",
8254                                  i40e_stat_str(hw, ret),
8255                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8256                         return ret;
8257                 }
8258         }
8259         return ret;
8260 }
8261
8262 /**
8263  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8264  * @vsi: Pointer to vsi structure
8265  * @seed: Buffter to store the hash keys
8266  * @lut: Buffer to store the lookup table entries
8267  * @lut_size: Size of buffer to store the lookup table entries
8268  *
8269  * Return 0 on success, negative on failure
8270  */
8271 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8272                            u8 *lut, u16 lut_size)
8273 {
8274         struct i40e_pf *pf = vsi->back;
8275         struct i40e_hw *hw = &pf->hw;
8276         int ret = 0;
8277
8278         if (seed) {
8279                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8280                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8281                 if (ret) {
8282                         dev_info(&pf->pdev->dev,
8283                                  "Cannot get RSS key, err %s aq_err %s\n",
8284                                  i40e_stat_str(&pf->hw, ret),
8285                                  i40e_aq_str(&pf->hw,
8286                                              pf->hw.aq.asq_last_status));
8287                         return ret;
8288                 }
8289         }
8290
8291         if (lut) {
8292                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8293
8294                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8295                 if (ret) {
8296                         dev_info(&pf->pdev->dev,
8297                                  "Cannot get RSS lut, err %s aq_err %s\n",
8298                                  i40e_stat_str(&pf->hw, ret),
8299                                  i40e_aq_str(&pf->hw,
8300                                              pf->hw.aq.asq_last_status));
8301                         return ret;
8302                 }
8303         }
8304
8305         return ret;
8306 }
8307
8308 /**
8309  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8310  * @vsi: VSI structure
8311  **/
8312 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8313 {
8314         u8 seed[I40E_HKEY_ARRAY_SIZE];
8315         struct i40e_pf *pf = vsi->back;
8316         u8 *lut;
8317         int ret;
8318
8319         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8320                 return 0;
8321
8322         if (!vsi->rss_size)
8323                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8324                                       vsi->num_queue_pairs);
8325         if (!vsi->rss_size)
8326                 return -EINVAL;
8327
8328         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8329         if (!lut)
8330                 return -ENOMEM;
8331         /* Use the user configured hash keys and lookup table if there is one,
8332          * otherwise use default
8333          */
8334         if (vsi->rss_lut_user)
8335                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8336         else
8337                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8338         if (vsi->rss_hkey_user)
8339                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8340         else
8341                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8342         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8343         kfree(lut);
8344
8345         return ret;
8346 }
8347
8348 /**
8349  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8350  * @vsi: Pointer to vsi structure
8351  * @seed: RSS hash seed
8352  * @lut: Lookup table
8353  * @lut_size: Lookup table size
8354  *
8355  * Returns 0 on success, negative on failure
8356  **/
8357 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8358                                const u8 *lut, u16 lut_size)
8359 {
8360         struct i40e_pf *pf = vsi->back;
8361         struct i40e_hw *hw = &pf->hw;
8362         u16 vf_id = vsi->vf_id;
8363         u8 i;
8364
8365         /* Fill out hash function seed */
8366         if (seed) {
8367                 u32 *seed_dw = (u32 *)seed;
8368
8369                 if (vsi->type == I40E_VSI_MAIN) {
8370                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8371                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8372                                                   seed_dw[i]);
8373                 } else if (vsi->type == I40E_VSI_SRIOV) {
8374                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8375                                 i40e_write_rx_ctl(hw,
8376                                                   I40E_VFQF_HKEY1(i, vf_id),
8377                                                   seed_dw[i]);
8378                 } else {
8379                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8380                 }
8381         }
8382
8383         if (lut) {
8384                 u32 *lut_dw = (u32 *)lut;
8385
8386                 if (vsi->type == I40E_VSI_MAIN) {
8387                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8388                                 return -EINVAL;
8389                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8390                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8391                 } else if (vsi->type == I40E_VSI_SRIOV) {
8392                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8393                                 return -EINVAL;
8394                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8395                                 i40e_write_rx_ctl(hw,
8396                                                   I40E_VFQF_HLUT1(i, vf_id),
8397                                                   lut_dw[i]);
8398                 } else {
8399                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8400                 }
8401         }
8402         i40e_flush(hw);
8403
8404         return 0;
8405 }
8406
8407 /**
8408  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8409  * @vsi: Pointer to VSI structure
8410  * @seed: Buffer to store the keys
8411  * @lut: Buffer to store the lookup table entries
8412  * @lut_size: Size of buffer to store the lookup table entries
8413  *
8414  * Returns 0 on success, negative on failure
8415  */
8416 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8417                             u8 *lut, u16 lut_size)
8418 {
8419         struct i40e_pf *pf = vsi->back;
8420         struct i40e_hw *hw = &pf->hw;
8421         u16 i;
8422
8423         if (seed) {
8424                 u32 *seed_dw = (u32 *)seed;
8425
8426                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8427                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8428         }
8429         if (lut) {
8430                 u32 *lut_dw = (u32 *)lut;
8431
8432                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8433                         return -EINVAL;
8434                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8435                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8436         }
8437
8438         return 0;
8439 }
8440
8441 /**
8442  * i40e_config_rss - Configure RSS keys and lut
8443  * @vsi: Pointer to VSI structure
8444  * @seed: RSS hash seed
8445  * @lut: Lookup table
8446  * @lut_size: Lookup table size
8447  *
8448  * Returns 0 on success, negative on failure
8449  */
8450 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8451 {
8452         struct i40e_pf *pf = vsi->back;
8453
8454         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8455                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8456         else
8457                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8458 }
8459
8460 /**
8461  * i40e_get_rss - Get RSS keys and lut
8462  * @vsi: Pointer to VSI structure
8463  * @seed: Buffer to store the keys
8464  * @lut: Buffer to store the lookup table entries
8465  * lut_size: Size of buffer to store the lookup table entries
8466  *
8467  * Returns 0 on success, negative on failure
8468  */
8469 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8470 {
8471         struct i40e_pf *pf = vsi->back;
8472
8473         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8474                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8475         else
8476                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8477 }
8478
8479 /**
8480  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8481  * @pf: Pointer to board private structure
8482  * @lut: Lookup table
8483  * @rss_table_size: Lookup table size
8484  * @rss_size: Range of queue number for hashing
8485  */
8486 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8487                        u16 rss_table_size, u16 rss_size)
8488 {
8489         u16 i;
8490
8491         for (i = 0; i < rss_table_size; i++)
8492                 lut[i] = i % rss_size;
8493 }
8494
8495 /**
8496  * i40e_pf_config_rss - Prepare for RSS if used
8497  * @pf: board private structure
8498  **/
8499 static int i40e_pf_config_rss(struct i40e_pf *pf)
8500 {
8501         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8502         u8 seed[I40E_HKEY_ARRAY_SIZE];
8503         u8 *lut;
8504         struct i40e_hw *hw = &pf->hw;
8505         u32 reg_val;
8506         u64 hena;
8507         int ret;
8508
8509         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8510         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8511                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8512         hena |= i40e_pf_get_default_rss_hena(pf);
8513
8514         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8515         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8516
8517         /* Determine the RSS table size based on the hardware capabilities */
8518         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8519         reg_val = (pf->rss_table_size == 512) ?
8520                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8521                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8522         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8523
8524         /* Determine the RSS size of the VSI */
8525         if (!vsi->rss_size)
8526                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8527                                       vsi->num_queue_pairs);
8528         if (!vsi->rss_size)
8529                 return -EINVAL;
8530
8531         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8532         if (!lut)
8533                 return -ENOMEM;
8534
8535         /* Use user configured lut if there is one, otherwise use default */
8536         if (vsi->rss_lut_user)
8537                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8538         else
8539                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8540
8541         /* Use user configured hash key if there is one, otherwise
8542          * use default.
8543          */
8544         if (vsi->rss_hkey_user)
8545                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8546         else
8547                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8548         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8549         kfree(lut);
8550
8551         return ret;
8552 }
8553
8554 /**
8555  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8556  * @pf: board private structure
8557  * @queue_count: the requested queue count for rss.
8558  *
8559  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8560  * count which may be different from the requested queue count.
8561  **/
8562 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8563 {
8564         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8565         int new_rss_size;
8566
8567         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8568                 return 0;
8569
8570         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8571
8572         if (queue_count != vsi->num_queue_pairs) {
8573                 vsi->req_queue_pairs = queue_count;
8574                 i40e_prep_for_reset(pf);
8575
8576                 pf->alloc_rss_size = new_rss_size;
8577
8578                 i40e_reset_and_rebuild(pf, true);
8579
8580                 /* Discard the user configured hash keys and lut, if less
8581                  * queues are enabled.
8582                  */
8583                 if (queue_count < vsi->rss_size) {
8584                         i40e_clear_rss_config_user(vsi);
8585                         dev_dbg(&pf->pdev->dev,
8586                                 "discard user configured hash keys and lut\n");
8587                 }
8588
8589                 /* Reset vsi->rss_size, as number of enabled queues changed */
8590                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8591                                       vsi->num_queue_pairs);
8592
8593                 i40e_pf_config_rss(pf);
8594         }
8595         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
8596                  vsi->req_queue_pairs, pf->rss_size_max);
8597         return pf->alloc_rss_size;
8598 }
8599
8600 /**
8601  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8602  * @pf: board private structure
8603  **/
8604 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8605 {
8606         i40e_status status;
8607         bool min_valid, max_valid;
8608         u32 max_bw, min_bw;
8609
8610         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8611                                            &min_valid, &max_valid);
8612
8613         if (!status) {
8614                 if (min_valid)
8615                         pf->npar_min_bw = min_bw;
8616                 if (max_valid)
8617                         pf->npar_max_bw = max_bw;
8618         }
8619
8620         return status;
8621 }
8622
8623 /**
8624  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8625  * @pf: board private structure
8626  **/
8627 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8628 {
8629         struct i40e_aqc_configure_partition_bw_data bw_data;
8630         i40e_status status;
8631
8632         /* Set the valid bit for this PF */
8633         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8634         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8635         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8636
8637         /* Set the new bandwidths */
8638         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8639
8640         return status;
8641 }
8642
8643 /**
8644  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8645  * @pf: board private structure
8646  **/
8647 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8648 {
8649         /* Commit temporary BW setting to permanent NVM image */
8650         enum i40e_admin_queue_err last_aq_status;
8651         i40e_status ret;
8652         u16 nvm_word;
8653
8654         if (pf->hw.partition_id != 1) {
8655                 dev_info(&pf->pdev->dev,
8656                          "Commit BW only works on partition 1! This is partition %d",
8657                          pf->hw.partition_id);
8658                 ret = I40E_NOT_SUPPORTED;
8659                 goto bw_commit_out;
8660         }
8661
8662         /* Acquire NVM for read access */
8663         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8664         last_aq_status = pf->hw.aq.asq_last_status;
8665         if (ret) {
8666                 dev_info(&pf->pdev->dev,
8667                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8668                          i40e_stat_str(&pf->hw, ret),
8669                          i40e_aq_str(&pf->hw, last_aq_status));
8670                 goto bw_commit_out;
8671         }
8672
8673         /* Read word 0x10 of NVM - SW compatibility word 1 */
8674         ret = i40e_aq_read_nvm(&pf->hw,
8675                                I40E_SR_NVM_CONTROL_WORD,
8676                                0x10, sizeof(nvm_word), &nvm_word,
8677                                false, NULL);
8678         /* Save off last admin queue command status before releasing
8679          * the NVM
8680          */
8681         last_aq_status = pf->hw.aq.asq_last_status;
8682         i40e_release_nvm(&pf->hw);
8683         if (ret) {
8684                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8685                          i40e_stat_str(&pf->hw, ret),
8686                          i40e_aq_str(&pf->hw, last_aq_status));
8687                 goto bw_commit_out;
8688         }
8689
8690         /* Wait a bit for NVM release to complete */
8691         msleep(50);
8692
8693         /* Acquire NVM for write access */
8694         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8695         last_aq_status = pf->hw.aq.asq_last_status;
8696         if (ret) {
8697                 dev_info(&pf->pdev->dev,
8698                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8699                          i40e_stat_str(&pf->hw, ret),
8700                          i40e_aq_str(&pf->hw, last_aq_status));
8701                 goto bw_commit_out;
8702         }
8703         /* Write it back out unchanged to initiate update NVM,
8704          * which will force a write of the shadow (alt) RAM to
8705          * the NVM - thus storing the bandwidth values permanently.
8706          */
8707         ret = i40e_aq_update_nvm(&pf->hw,
8708                                  I40E_SR_NVM_CONTROL_WORD,
8709                                  0x10, sizeof(nvm_word),
8710                                  &nvm_word, true, NULL);
8711         /* Save off last admin queue command status before releasing
8712          * the NVM
8713          */
8714         last_aq_status = pf->hw.aq.asq_last_status;
8715         i40e_release_nvm(&pf->hw);
8716         if (ret)
8717                 dev_info(&pf->pdev->dev,
8718                          "BW settings NOT SAVED, err %s aq_err %s\n",
8719                          i40e_stat_str(&pf->hw, ret),
8720                          i40e_aq_str(&pf->hw, last_aq_status));
8721 bw_commit_out:
8722
8723         return ret;
8724 }
8725
8726 /**
8727  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8728  * @pf: board private structure to initialize
8729  *
8730  * i40e_sw_init initializes the Adapter private data structure.
8731  * Fields are initialized based on PCI device information and
8732  * OS network device settings (MTU size).
8733  **/
8734 static int i40e_sw_init(struct i40e_pf *pf)
8735 {
8736         int err = 0;
8737         int size;
8738
8739         /* Set default capability flags */
8740         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8741                     I40E_FLAG_MSI_ENABLED     |
8742                     I40E_FLAG_MSIX_ENABLED;
8743
8744         /* Set default ITR */
8745         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8746         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8747
8748         /* Depending on PF configurations, it is possible that the RSS
8749          * maximum might end up larger than the available queues
8750          */
8751         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8752         pf->alloc_rss_size = 1;
8753         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8754         pf->rss_size_max = min_t(int, pf->rss_size_max,
8755                                  pf->hw.func_caps.num_tx_qp);
8756         if (pf->hw.func_caps.rss) {
8757                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8758                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8759                                            num_online_cpus());
8760         }
8761
8762         /* MFP mode enabled */
8763         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8764                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8765                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8766                 if (i40e_get_npar_bw_setting(pf))
8767                         dev_warn(&pf->pdev->dev,
8768                                  "Could not get NPAR bw settings\n");
8769                 else
8770                         dev_info(&pf->pdev->dev,
8771                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8772                                  pf->npar_min_bw, pf->npar_max_bw);
8773         }
8774
8775         /* FW/NVM is not yet fixed in this regard */
8776         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8777             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8778                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8779                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8780                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8781                     pf->hw.num_partitions > 1)
8782                         dev_info(&pf->pdev->dev,
8783                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8784                 else
8785                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8786                 pf->fdir_pf_filter_count =
8787                                  pf->hw.func_caps.fd_filters_guaranteed;
8788                 pf->hw.fdir_shared_filter_count =
8789                                  pf->hw.func_caps.fd_filters_best_effort;
8790         }
8791
8792         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8793             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8794             (pf->hw.aq.fw_maj_ver < 4))) {
8795                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8796                 /* No DCB support  for FW < v4.33 */
8797                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8798         }
8799
8800         /* Disable FW LLDP if FW < v4.3 */
8801         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8802             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8803             (pf->hw.aq.fw_maj_ver < 4)))
8804                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8805
8806         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8807         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8808             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8809             (pf->hw.aq.fw_maj_ver >= 5)))
8810                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8811
8812         if (pf->hw.func_caps.vmdq) {
8813                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8814                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8815                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8816         }
8817
8818         if (pf->hw.func_caps.iwarp) {
8819                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8820                 /* IWARP needs one extra vector for CQP just like MISC.*/
8821                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8822         }
8823
8824 #ifdef I40E_FCOE
8825         i40e_init_pf_fcoe(pf);
8826
8827 #endif /* I40E_FCOE */
8828 #ifdef CONFIG_PCI_IOV
8829         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8830                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8831                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8832                 pf->num_req_vfs = min_t(int,
8833                                         pf->hw.func_caps.num_vfs,
8834                                         I40E_MAX_VF_COUNT);
8835         }
8836 #endif /* CONFIG_PCI_IOV */
8837         if (pf->hw.mac.type == I40E_MAC_X722) {
8838                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE
8839                              | I40E_FLAG_128_QP_RSS_CAPABLE
8840                              | I40E_FLAG_HW_ATR_EVICT_CAPABLE
8841                              | I40E_FLAG_OUTER_UDP_CSUM_CAPABLE
8842                              | I40E_FLAG_WB_ON_ITR_CAPABLE
8843                              | I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE
8844                              | I40E_FLAG_NO_PCI_LINK_CHECK
8845                              | I40E_FLAG_USE_SET_LLDP_MIB
8846                              | I40E_FLAG_GENEVE_OFFLOAD_CAPABLE
8847                              | I40E_FLAG_PTP_L4_CAPABLE
8848                              | I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE;
8849         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8850                    ((pf->hw.aq.api_maj_ver == 1) &&
8851                     (pf->hw.aq.api_min_ver > 4))) {
8852                 /* Supported in FW API version higher than 1.4 */
8853                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8854                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8855         } else {
8856                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8857         }
8858
8859         pf->eeprom_version = 0xDEAD;
8860         pf->lan_veb = I40E_NO_VEB;
8861         pf->lan_vsi = I40E_NO_VSI;
8862
8863         /* By default FW has this off for performance reasons */
8864         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8865
8866         /* set up queue assignment tracking */
8867         size = sizeof(struct i40e_lump_tracking)
8868                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8869         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8870         if (!pf->qp_pile) {
8871                 err = -ENOMEM;
8872                 goto sw_init_done;
8873         }
8874         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8875         pf->qp_pile->search_hint = 0;
8876
8877         pf->tx_timeout_recovery_level = 1;
8878
8879         mutex_init(&pf->switch_mutex);
8880
8881         /* If NPAR is enabled nudge the Tx scheduler */
8882         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8883                 i40e_set_npar_bw_setting(pf);
8884
8885 sw_init_done:
8886         return err;
8887 }
8888
8889 /**
8890  * i40e_set_ntuple - set the ntuple feature flag and take action
8891  * @pf: board private structure to initialize
8892  * @features: the feature set that the stack is suggesting
8893  *
8894  * returns a bool to indicate if reset needs to happen
8895  **/
8896 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8897 {
8898         bool need_reset = false;
8899
8900         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8901          * the state changed, we need to reset.
8902          */
8903         if (features & NETIF_F_NTUPLE) {
8904                 /* Enable filters and mark for reset */
8905                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8906                         need_reset = true;
8907                 /* enable FD_SB only if there is MSI-X vector */
8908                 if (pf->num_fdsb_msix > 0)
8909                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8910         } else {
8911                 /* turn off filters, mark for reset and clear SW filter list */
8912                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8913                         need_reset = true;
8914                         i40e_fdir_filter_exit(pf);
8915                 }
8916                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8917                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8918                 /* reset fd counters */
8919                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8920                 pf->fdir_pf_active_filters = 0;
8921                 /* if ATR was auto disabled it can be re-enabled. */
8922                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8923                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8924                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8925                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8926                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8927                 }
8928         }
8929         return need_reset;
8930 }
8931
8932 /**
8933  * i40e_clear_rss_lut - clear the rx hash lookup table
8934  * @vsi: the VSI being configured
8935  **/
8936 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8937 {
8938         struct i40e_pf *pf = vsi->back;
8939         struct i40e_hw *hw = &pf->hw;
8940         u16 vf_id = vsi->vf_id;
8941         u8 i;
8942
8943         if (vsi->type == I40E_VSI_MAIN) {
8944                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8945                         wr32(hw, I40E_PFQF_HLUT(i), 0);
8946         } else if (vsi->type == I40E_VSI_SRIOV) {
8947                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8948                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
8949         } else {
8950                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8951         }
8952 }
8953
8954 /**
8955  * i40e_set_features - set the netdev feature flags
8956  * @netdev: ptr to the netdev being adjusted
8957  * @features: the feature set that the stack is suggesting
8958  **/
8959 static int i40e_set_features(struct net_device *netdev,
8960                              netdev_features_t features)
8961 {
8962         struct i40e_netdev_priv *np = netdev_priv(netdev);
8963         struct i40e_vsi *vsi = np->vsi;
8964         struct i40e_pf *pf = vsi->back;
8965         bool need_reset;
8966
8967         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
8968                 i40e_pf_config_rss(pf);
8969         else if (!(features & NETIF_F_RXHASH) &&
8970                  netdev->features & NETIF_F_RXHASH)
8971                 i40e_clear_rss_lut(vsi);
8972
8973         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8974                 i40e_vlan_stripping_enable(vsi);
8975         else
8976                 i40e_vlan_stripping_disable(vsi);
8977
8978         need_reset = i40e_set_ntuple(pf, features);
8979
8980         if (need_reset)
8981                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8982
8983         return 0;
8984 }
8985
8986 /**
8987  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8988  * @pf: board private structure
8989  * @port: The UDP port to look up
8990  *
8991  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8992  **/
8993 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8994 {
8995         u8 i;
8996
8997         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8998                 if (pf->udp_ports[i].index == port)
8999                         return i;
9000         }
9001
9002         return i;
9003 }
9004
9005 /**
9006  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
9007  * @netdev: This physical port's netdev
9008  * @ti: Tunnel endpoint information
9009  **/
9010 static void i40e_udp_tunnel_add(struct net_device *netdev,
9011                                 struct udp_tunnel_info *ti)
9012 {
9013         struct i40e_netdev_priv *np = netdev_priv(netdev);
9014         struct i40e_vsi *vsi = np->vsi;
9015         struct i40e_pf *pf = vsi->back;
9016         __be16 port = ti->port;
9017         u8 next_idx;
9018         u8 idx;
9019
9020         idx = i40e_get_udp_port_idx(pf, port);
9021
9022         /* Check if port already exists */
9023         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
9024                 netdev_info(netdev, "port %d already offloaded\n",
9025                             ntohs(port));
9026                 return;
9027         }
9028
9029         /* Now check if there is space to add the new port */
9030         next_idx = i40e_get_udp_port_idx(pf, 0);
9031
9032         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
9033                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
9034                             ntohs(port));
9035                 return;
9036         }
9037
9038         switch (ti->type) {
9039         case UDP_TUNNEL_TYPE_VXLAN:
9040                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
9041                 break;
9042         case UDP_TUNNEL_TYPE_GENEVE:
9043                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
9044                         return;
9045                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
9046                 break;
9047         default:
9048                 return;
9049         }
9050
9051         /* New port: add it and mark its index in the bitmap */
9052         pf->udp_ports[next_idx].index = port;
9053         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
9054         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
9055 }
9056
9057 /**
9058  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
9059  * @netdev: This physical port's netdev
9060  * @ti: Tunnel endpoint information
9061  **/
9062 static void i40e_udp_tunnel_del(struct net_device *netdev,
9063                                 struct udp_tunnel_info *ti)
9064 {
9065         struct i40e_netdev_priv *np = netdev_priv(netdev);
9066         struct i40e_vsi *vsi = np->vsi;
9067         struct i40e_pf *pf = vsi->back;
9068         __be16 port = ti->port;
9069         u8 idx;
9070
9071         idx = i40e_get_udp_port_idx(pf, port);
9072
9073         /* Check if port already exists */
9074         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
9075                 goto not_found;
9076
9077         switch (ti->type) {
9078         case UDP_TUNNEL_TYPE_VXLAN:
9079                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
9080                         goto not_found;
9081                 break;
9082         case UDP_TUNNEL_TYPE_GENEVE:
9083                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
9084                         goto not_found;
9085                 break;
9086         default:
9087                 goto not_found;
9088         }
9089
9090         /* if port exists, set it to 0 (mark for deletion)
9091          * and make it pending
9092          */
9093         pf->udp_ports[idx].index = 0;
9094         pf->pending_udp_bitmap |= BIT_ULL(idx);
9095         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
9096
9097         return;
9098 not_found:
9099         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
9100                     ntohs(port));
9101 }
9102
9103 static int i40e_get_phys_port_id(struct net_device *netdev,
9104                                  struct netdev_phys_item_id *ppid)
9105 {
9106         struct i40e_netdev_priv *np = netdev_priv(netdev);
9107         struct i40e_pf *pf = np->vsi->back;
9108         struct i40e_hw *hw = &pf->hw;
9109
9110         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
9111                 return -EOPNOTSUPP;
9112
9113         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
9114         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
9115
9116         return 0;
9117 }
9118
9119 /**
9120  * i40e_ndo_fdb_add - add an entry to the hardware database
9121  * @ndm: the input from the stack
9122  * @tb: pointer to array of nladdr (unused)
9123  * @dev: the net device pointer
9124  * @addr: the MAC address entry being added
9125  * @flags: instructions from stack about fdb operation
9126  */
9127 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
9128                             struct net_device *dev,
9129                             const unsigned char *addr, u16 vid,
9130                             u16 flags)
9131 {
9132         struct i40e_netdev_priv *np = netdev_priv(dev);
9133         struct i40e_pf *pf = np->vsi->back;
9134         int err = 0;
9135
9136         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
9137                 return -EOPNOTSUPP;
9138
9139         if (vid) {
9140                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
9141                 return -EINVAL;
9142         }
9143
9144         /* Hardware does not support aging addresses so if a
9145          * ndm_state is given only allow permanent addresses
9146          */
9147         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
9148                 netdev_info(dev, "FDB only supports static addresses\n");
9149                 return -EINVAL;
9150         }
9151
9152         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
9153                 err = dev_uc_add_excl(dev, addr);
9154         else if (is_multicast_ether_addr(addr))
9155                 err = dev_mc_add_excl(dev, addr);
9156         else
9157                 err = -EINVAL;
9158
9159         /* Only return duplicate errors if NLM_F_EXCL is set */
9160         if (err == -EEXIST && !(flags & NLM_F_EXCL))
9161                 err = 0;
9162
9163         return err;
9164 }
9165
9166 /**
9167  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
9168  * @dev: the netdev being configured
9169  * @nlh: RTNL message
9170  *
9171  * Inserts a new hardware bridge if not already created and
9172  * enables the bridging mode requested (VEB or VEPA). If the
9173  * hardware bridge has already been inserted and the request
9174  * is to change the mode then that requires a PF reset to
9175  * allow rebuild of the components with required hardware
9176  * bridge mode enabled.
9177  **/
9178 static int i40e_ndo_bridge_setlink(struct net_device *dev,
9179                                    struct nlmsghdr *nlh,
9180                                    u16 flags)
9181 {
9182         struct i40e_netdev_priv *np = netdev_priv(dev);
9183         struct i40e_vsi *vsi = np->vsi;
9184         struct i40e_pf *pf = vsi->back;
9185         struct i40e_veb *veb = NULL;
9186         struct nlattr *attr, *br_spec;
9187         int i, rem;
9188
9189         /* Only for PF VSI for now */
9190         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9191                 return -EOPNOTSUPP;
9192
9193         /* Find the HW bridge for PF VSI */
9194         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9195                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9196                         veb = pf->veb[i];
9197         }
9198
9199         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
9200
9201         nla_for_each_nested(attr, br_spec, rem) {
9202                 __u16 mode;
9203
9204                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
9205                         continue;
9206
9207                 mode = nla_get_u16(attr);
9208                 if ((mode != BRIDGE_MODE_VEPA) &&
9209                     (mode != BRIDGE_MODE_VEB))
9210                         return -EINVAL;
9211
9212                 /* Insert a new HW bridge */
9213                 if (!veb) {
9214                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9215                                              vsi->tc_config.enabled_tc);
9216                         if (veb) {
9217                                 veb->bridge_mode = mode;
9218                                 i40e_config_bridge_mode(veb);
9219                         } else {
9220                                 /* No Bridge HW offload available */
9221                                 return -ENOENT;
9222                         }
9223                         break;
9224                 } else if (mode != veb->bridge_mode) {
9225                         /* Existing HW bridge but different mode needs reset */
9226                         veb->bridge_mode = mode;
9227                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
9228                         if (mode == BRIDGE_MODE_VEB)
9229                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
9230                         else
9231                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9232                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
9233                         break;
9234                 }
9235         }
9236
9237         return 0;
9238 }
9239
9240 /**
9241  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9242  * @skb: skb buff
9243  * @pid: process id
9244  * @seq: RTNL message seq #
9245  * @dev: the netdev being configured
9246  * @filter_mask: unused
9247  * @nlflags: netlink flags passed in
9248  *
9249  * Return the mode in which the hardware bridge is operating in
9250  * i.e VEB or VEPA.
9251  **/
9252 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9253                                    struct net_device *dev,
9254                                    u32 __always_unused filter_mask,
9255                                    int nlflags)
9256 {
9257         struct i40e_netdev_priv *np = netdev_priv(dev);
9258         struct i40e_vsi *vsi = np->vsi;
9259         struct i40e_pf *pf = vsi->back;
9260         struct i40e_veb *veb = NULL;
9261         int i;
9262
9263         /* Only for PF VSI for now */
9264         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9265                 return -EOPNOTSUPP;
9266
9267         /* Find the HW bridge for the PF VSI */
9268         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9269                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9270                         veb = pf->veb[i];
9271         }
9272
9273         if (!veb)
9274                 return 0;
9275
9276         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9277                                        0, 0, nlflags, filter_mask, NULL);
9278 }
9279
9280 /**
9281  * i40e_features_check - Validate encapsulated packet conforms to limits
9282  * @skb: skb buff
9283  * @dev: This physical port's netdev
9284  * @features: Offload features that the stack believes apply
9285  **/
9286 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9287                                              struct net_device *dev,
9288                                              netdev_features_t features)
9289 {
9290         size_t len;
9291
9292         /* No point in doing any of this if neither checksum nor GSO are
9293          * being requested for this frame.  We can rule out both by just
9294          * checking for CHECKSUM_PARTIAL
9295          */
9296         if (skb->ip_summed != CHECKSUM_PARTIAL)
9297                 return features;
9298
9299         /* We cannot support GSO if the MSS is going to be less than
9300          * 64 bytes.  If it is then we need to drop support for GSO.
9301          */
9302         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
9303                 features &= ~NETIF_F_GSO_MASK;
9304
9305         /* MACLEN can support at most 63 words */
9306         len = skb_network_header(skb) - skb->data;
9307         if (len & ~(63 * 2))
9308                 goto out_err;
9309
9310         /* IPLEN and EIPLEN can support at most 127 dwords */
9311         len = skb_transport_header(skb) - skb_network_header(skb);
9312         if (len & ~(127 * 4))
9313                 goto out_err;
9314
9315         if (skb->encapsulation) {
9316                 /* L4TUNLEN can support 127 words */
9317                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
9318                 if (len & ~(127 * 2))
9319                         goto out_err;
9320
9321                 /* IPLEN can support at most 127 dwords */
9322                 len = skb_inner_transport_header(skb) -
9323                       skb_inner_network_header(skb);
9324                 if (len & ~(127 * 4))
9325                         goto out_err;
9326         }
9327
9328         /* No need to validate L4LEN as TCP is the only protocol with a
9329          * a flexible value and we support all possible values supported
9330          * by TCP, which is at most 15 dwords
9331          */
9332
9333         return features;
9334 out_err:
9335         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9336 }
9337
9338 static const struct net_device_ops i40e_netdev_ops = {
9339         .ndo_open               = i40e_open,
9340         .ndo_stop               = i40e_close,
9341         .ndo_start_xmit         = i40e_lan_xmit_frame,
9342         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9343         .ndo_set_rx_mode        = i40e_set_rx_mode,
9344         .ndo_validate_addr      = eth_validate_addr,
9345         .ndo_set_mac_address    = i40e_set_mac,
9346         .ndo_change_mtu         = i40e_change_mtu,
9347         .ndo_do_ioctl           = i40e_ioctl,
9348         .ndo_tx_timeout         = i40e_tx_timeout,
9349         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9350         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9351 #ifdef CONFIG_NET_POLL_CONTROLLER
9352         .ndo_poll_controller    = i40e_netpoll,
9353 #endif
9354         .ndo_setup_tc           = __i40e_setup_tc,
9355 #ifdef I40E_FCOE
9356         .ndo_fcoe_enable        = i40e_fcoe_enable,
9357         .ndo_fcoe_disable       = i40e_fcoe_disable,
9358 #endif
9359         .ndo_set_features       = i40e_set_features,
9360         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9361         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9362         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9363         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9364         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9365         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9366         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9367         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9368         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9369         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9370         .ndo_fdb_add            = i40e_ndo_fdb_add,
9371         .ndo_features_check     = i40e_features_check,
9372         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9373         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9374 };
9375
9376 /**
9377  * i40e_config_netdev - Setup the netdev flags
9378  * @vsi: the VSI being configured
9379  *
9380  * Returns 0 on success, negative value on failure
9381  **/
9382 static int i40e_config_netdev(struct i40e_vsi *vsi)
9383 {
9384         struct i40e_pf *pf = vsi->back;
9385         struct i40e_hw *hw = &pf->hw;
9386         struct i40e_netdev_priv *np;
9387         struct net_device *netdev;
9388         u8 broadcast[ETH_ALEN];
9389         u8 mac_addr[ETH_ALEN];
9390         int etherdev_size;
9391
9392         etherdev_size = sizeof(struct i40e_netdev_priv);
9393         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9394         if (!netdev)
9395                 return -ENOMEM;
9396
9397         vsi->netdev = netdev;
9398         np = netdev_priv(netdev);
9399         np->vsi = vsi;
9400
9401         netdev->hw_enc_features |= NETIF_F_SG                   |
9402                                    NETIF_F_IP_CSUM              |
9403                                    NETIF_F_IPV6_CSUM            |
9404                                    NETIF_F_HIGHDMA              |
9405                                    NETIF_F_SOFT_FEATURES        |
9406                                    NETIF_F_TSO                  |
9407                                    NETIF_F_TSO_ECN              |
9408                                    NETIF_F_TSO6                 |
9409                                    NETIF_F_GSO_GRE              |
9410                                    NETIF_F_GSO_GRE_CSUM         |
9411                                    NETIF_F_GSO_IPXIP4           |
9412                                    NETIF_F_GSO_IPXIP6           |
9413                                    NETIF_F_GSO_UDP_TUNNEL       |
9414                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9415                                    NETIF_F_GSO_PARTIAL          |
9416                                    NETIF_F_SCTP_CRC             |
9417                                    NETIF_F_RXHASH               |
9418                                    NETIF_F_RXCSUM               |
9419                                    0;
9420
9421         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9422                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9423
9424         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9425
9426         /* record features VLANs can make use of */
9427         netdev->vlan_features |= netdev->hw_enc_features |
9428                                  NETIF_F_TSO_MANGLEID;
9429
9430         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9431                 netdev->hw_features |= NETIF_F_NTUPLE;
9432
9433         netdev->hw_features |= netdev->hw_enc_features  |
9434                                NETIF_F_HW_VLAN_CTAG_TX  |
9435                                NETIF_F_HW_VLAN_CTAG_RX;
9436
9437         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9438         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9439
9440         if (vsi->type == I40E_VSI_MAIN) {
9441                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9442                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9443                 /* The following steps are necessary to prevent reception
9444                  * of tagged packets - some older NVM configurations load a
9445                  * default a MAC-VLAN filter that accepts any tagged packet
9446                  * which must be replaced by a normal filter.
9447                  */
9448                 i40e_rm_default_mac_filter(vsi, mac_addr);
9449                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9450                 i40e_add_mac_filter(vsi, mac_addr);
9451                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9452         } else {
9453                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9454                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9455                          pf->vsi[pf->lan_vsi]->netdev->name);
9456                 random_ether_addr(mac_addr);
9457
9458                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9459                 i40e_add_mac_filter(vsi, mac_addr);
9460                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9461         }
9462
9463         /* Add the broadcast filter so that we initially will receive
9464          * broadcast packets. Note that when a new VLAN is first added the
9465          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
9466          * specific filters as part of transitioning into "vlan" operation.
9467          * When more VLANs are added, the driver will copy each existing MAC
9468          * filter and add it for the new VLAN.
9469          *
9470          * Broadcast filters are handled specially by
9471          * i40e_sync_filters_subtask, as the driver must to set the broadcast
9472          * promiscuous bit instead of adding this directly as a MAC/VLAN
9473          * filter. The subtask will update the correct broadcast promiscuous
9474          * bits as VLANs become active or inactive.
9475          */
9476         eth_broadcast_addr(broadcast);
9477         spin_lock_bh(&vsi->mac_filter_hash_lock);
9478         i40e_add_mac_filter(vsi, broadcast);
9479         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9480
9481         ether_addr_copy(netdev->dev_addr, mac_addr);
9482         ether_addr_copy(netdev->perm_addr, mac_addr);
9483
9484         netdev->priv_flags |= IFF_UNICAST_FLT;
9485         netdev->priv_flags |= IFF_SUPP_NOFCS;
9486         /* Setup netdev TC information */
9487         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9488
9489         netdev->netdev_ops = &i40e_netdev_ops;
9490         netdev->watchdog_timeo = 5 * HZ;
9491         i40e_set_ethtool_ops(netdev);
9492 #ifdef I40E_FCOE
9493         i40e_fcoe_config_netdev(netdev, vsi);
9494 #endif
9495
9496         /* MTU range: 68 - 9706 */
9497         netdev->min_mtu = ETH_MIN_MTU;
9498         netdev->max_mtu = I40E_MAX_RXBUFFER -
9499                           (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
9500
9501         return 0;
9502 }
9503
9504 /**
9505  * i40e_vsi_delete - Delete a VSI from the switch
9506  * @vsi: the VSI being removed
9507  *
9508  * Returns 0 on success, negative value on failure
9509  **/
9510 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9511 {
9512         /* remove default VSI is not allowed */
9513         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9514                 return;
9515
9516         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9517 }
9518
9519 /**
9520  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9521  * @vsi: the VSI being queried
9522  *
9523  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9524  **/
9525 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9526 {
9527         struct i40e_veb *veb;
9528         struct i40e_pf *pf = vsi->back;
9529
9530         /* Uplink is not a bridge so default to VEB */
9531         if (vsi->veb_idx == I40E_NO_VEB)
9532                 return 1;
9533
9534         veb = pf->veb[vsi->veb_idx];
9535         if (!veb) {
9536                 dev_info(&pf->pdev->dev,
9537                          "There is no veb associated with the bridge\n");
9538                 return -ENOENT;
9539         }
9540
9541         /* Uplink is a bridge in VEPA mode */
9542         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9543                 return 0;
9544         } else {
9545                 /* Uplink is a bridge in VEB mode */
9546                 return 1;
9547         }
9548
9549         /* VEPA is now default bridge, so return 0 */
9550         return 0;
9551 }
9552
9553 /**
9554  * i40e_add_vsi - Add a VSI to the switch
9555  * @vsi: the VSI being configured
9556  *
9557  * This initializes a VSI context depending on the VSI type to be added and
9558  * passes it down to the add_vsi aq command.
9559  **/
9560 static int i40e_add_vsi(struct i40e_vsi *vsi)
9561 {
9562         int ret = -ENODEV;
9563         struct i40e_pf *pf = vsi->back;
9564         struct i40e_hw *hw = &pf->hw;
9565         struct i40e_vsi_context ctxt;
9566         struct i40e_mac_filter *f;
9567         struct hlist_node *h;
9568         int bkt;
9569
9570         u8 enabled_tc = 0x1; /* TC0 enabled */
9571         int f_count = 0;
9572
9573         memset(&ctxt, 0, sizeof(ctxt));
9574         switch (vsi->type) {
9575         case I40E_VSI_MAIN:
9576                 /* The PF's main VSI is already setup as part of the
9577                  * device initialization, so we'll not bother with
9578                  * the add_vsi call, but we will retrieve the current
9579                  * VSI context.
9580                  */
9581                 ctxt.seid = pf->main_vsi_seid;
9582                 ctxt.pf_num = pf->hw.pf_id;
9583                 ctxt.vf_num = 0;
9584                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9585                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9586                 if (ret) {
9587                         dev_info(&pf->pdev->dev,
9588                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9589                                  i40e_stat_str(&pf->hw, ret),
9590                                  i40e_aq_str(&pf->hw,
9591                                              pf->hw.aq.asq_last_status));
9592                         return -ENOENT;
9593                 }
9594                 vsi->info = ctxt.info;
9595                 vsi->info.valid_sections = 0;
9596
9597                 vsi->seid = ctxt.seid;
9598                 vsi->id = ctxt.vsi_number;
9599
9600                 enabled_tc = i40e_pf_get_tc_map(pf);
9601
9602                 /* MFP mode setup queue map and update VSI */
9603                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9604                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9605                         memset(&ctxt, 0, sizeof(ctxt));
9606                         ctxt.seid = pf->main_vsi_seid;
9607                         ctxt.pf_num = pf->hw.pf_id;
9608                         ctxt.vf_num = 0;
9609                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9610                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9611                         if (ret) {
9612                                 dev_info(&pf->pdev->dev,
9613                                          "update vsi failed, err %s aq_err %s\n",
9614                                          i40e_stat_str(&pf->hw, ret),
9615                                          i40e_aq_str(&pf->hw,
9616                                                     pf->hw.aq.asq_last_status));
9617                                 ret = -ENOENT;
9618                                 goto err;
9619                         }
9620                         /* update the local VSI info queue map */
9621                         i40e_vsi_update_queue_map(vsi, &ctxt);
9622                         vsi->info.valid_sections = 0;
9623                 } else {
9624                         /* Default/Main VSI is only enabled for TC0
9625                          * reconfigure it to enable all TCs that are
9626                          * available on the port in SFP mode.
9627                          * For MFP case the iSCSI PF would use this
9628                          * flow to enable LAN+iSCSI TC.
9629                          */
9630                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9631                         if (ret) {
9632                                 dev_info(&pf->pdev->dev,
9633                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9634                                          enabled_tc,
9635                                          i40e_stat_str(&pf->hw, ret),
9636                                          i40e_aq_str(&pf->hw,
9637                                                     pf->hw.aq.asq_last_status));
9638                                 ret = -ENOENT;
9639                         }
9640                 }
9641                 break;
9642
9643         case I40E_VSI_FDIR:
9644                 ctxt.pf_num = hw->pf_id;
9645                 ctxt.vf_num = 0;
9646                 ctxt.uplink_seid = vsi->uplink_seid;
9647                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9648                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9649                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9650                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9651                         ctxt.info.valid_sections |=
9652                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9653                         ctxt.info.switch_id =
9654                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9655                 }
9656                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9657                 break;
9658
9659         case I40E_VSI_VMDQ2:
9660                 ctxt.pf_num = hw->pf_id;
9661                 ctxt.vf_num = 0;
9662                 ctxt.uplink_seid = vsi->uplink_seid;
9663                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9664                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9665
9666                 /* This VSI is connected to VEB so the switch_id
9667                  * should be set to zero by default.
9668                  */
9669                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9670                         ctxt.info.valid_sections |=
9671                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9672                         ctxt.info.switch_id =
9673                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9674                 }
9675
9676                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9677                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9678                 break;
9679
9680         case I40E_VSI_SRIOV:
9681                 ctxt.pf_num = hw->pf_id;
9682                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9683                 ctxt.uplink_seid = vsi->uplink_seid;
9684                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9685                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9686
9687                 /* This VSI is connected to VEB so the switch_id
9688                  * should be set to zero by default.
9689                  */
9690                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9691                         ctxt.info.valid_sections |=
9692                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9693                         ctxt.info.switch_id =
9694                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9695                 }
9696
9697                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9698                         ctxt.info.valid_sections |=
9699                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9700                         ctxt.info.queueing_opt_flags |=
9701                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9702                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9703                 }
9704
9705                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9706                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9707                 if (pf->vf[vsi->vf_id].spoofchk) {
9708                         ctxt.info.valid_sections |=
9709                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9710                         ctxt.info.sec_flags |=
9711                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9712                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9713                 }
9714                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9715                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9716                 break;
9717
9718 #ifdef I40E_FCOE
9719         case I40E_VSI_FCOE:
9720                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9721                 if (ret) {
9722                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9723                         return ret;
9724                 }
9725                 break;
9726
9727 #endif /* I40E_FCOE */
9728         case I40E_VSI_IWARP:
9729                 /* send down message to iWARP */
9730                 break;
9731
9732         default:
9733                 return -ENODEV;
9734         }
9735
9736         if (vsi->type != I40E_VSI_MAIN) {
9737                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9738                 if (ret) {
9739                         dev_info(&vsi->back->pdev->dev,
9740                                  "add vsi failed, err %s aq_err %s\n",
9741                                  i40e_stat_str(&pf->hw, ret),
9742                                  i40e_aq_str(&pf->hw,
9743                                              pf->hw.aq.asq_last_status));
9744                         ret = -ENOENT;
9745                         goto err;
9746                 }
9747                 vsi->info = ctxt.info;
9748                 vsi->info.valid_sections = 0;
9749                 vsi->seid = ctxt.seid;
9750                 vsi->id = ctxt.vsi_number;
9751         }
9752
9753         vsi->active_filters = 0;
9754         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9755         spin_lock_bh(&vsi->mac_filter_hash_lock);
9756         /* If macvlan filters already exist, force them to get loaded */
9757         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
9758                 f->state = I40E_FILTER_NEW;
9759                 f_count++;
9760         }
9761         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9762
9763         if (f_count) {
9764                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9765                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9766         }
9767
9768         /* Update VSI BW information */
9769         ret = i40e_vsi_get_bw_info(vsi);
9770         if (ret) {
9771                 dev_info(&pf->pdev->dev,
9772                          "couldn't get vsi bw info, err %s aq_err %s\n",
9773                          i40e_stat_str(&pf->hw, ret),
9774                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9775                 /* VSI is already added so not tearing that up */
9776                 ret = 0;
9777         }
9778
9779 err:
9780         return ret;
9781 }
9782
9783 /**
9784  * i40e_vsi_release - Delete a VSI and free its resources
9785  * @vsi: the VSI being removed
9786  *
9787  * Returns 0 on success or < 0 on error
9788  **/
9789 int i40e_vsi_release(struct i40e_vsi *vsi)
9790 {
9791         struct i40e_mac_filter *f;
9792         struct hlist_node *h;
9793         struct i40e_veb *veb = NULL;
9794         struct i40e_pf *pf;
9795         u16 uplink_seid;
9796         int i, n, bkt;
9797
9798         pf = vsi->back;
9799
9800         /* release of a VEB-owner or last VSI is not allowed */
9801         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9802                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9803                          vsi->seid, vsi->uplink_seid);
9804                 return -ENODEV;
9805         }
9806         if (vsi == pf->vsi[pf->lan_vsi] &&
9807             !test_bit(__I40E_DOWN, &pf->state)) {
9808                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9809                 return -ENODEV;
9810         }
9811
9812         uplink_seid = vsi->uplink_seid;
9813         if (vsi->type != I40E_VSI_SRIOV) {
9814                 if (vsi->netdev_registered) {
9815                         vsi->netdev_registered = false;
9816                         if (vsi->netdev) {
9817                                 /* results in a call to i40e_close() */
9818                                 unregister_netdev(vsi->netdev);
9819                         }
9820                 } else {
9821                         i40e_vsi_close(vsi);
9822                 }
9823                 i40e_vsi_disable_irq(vsi);
9824         }
9825
9826         spin_lock_bh(&vsi->mac_filter_hash_lock);
9827
9828         /* clear the sync flag on all filters */
9829         if (vsi->netdev) {
9830                 __dev_uc_unsync(vsi->netdev, NULL);
9831                 __dev_mc_unsync(vsi->netdev, NULL);
9832         }
9833
9834         /* make sure any remaining filters are marked for deletion */
9835         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
9836                 __i40e_del_filter(vsi, f);
9837
9838         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9839
9840         i40e_sync_vsi_filters(vsi);
9841
9842         i40e_vsi_delete(vsi);
9843         i40e_vsi_free_q_vectors(vsi);
9844         if (vsi->netdev) {
9845                 free_netdev(vsi->netdev);
9846                 vsi->netdev = NULL;
9847         }
9848         i40e_vsi_clear_rings(vsi);
9849         i40e_vsi_clear(vsi);
9850
9851         /* If this was the last thing on the VEB, except for the
9852          * controlling VSI, remove the VEB, which puts the controlling
9853          * VSI onto the next level down in the switch.
9854          *
9855          * Well, okay, there's one more exception here: don't remove
9856          * the orphan VEBs yet.  We'll wait for an explicit remove request
9857          * from up the network stack.
9858          */
9859         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9860                 if (pf->vsi[i] &&
9861                     pf->vsi[i]->uplink_seid == uplink_seid &&
9862                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9863                         n++;      /* count the VSIs */
9864                 }
9865         }
9866         for (i = 0; i < I40E_MAX_VEB; i++) {
9867                 if (!pf->veb[i])
9868                         continue;
9869                 if (pf->veb[i]->uplink_seid == uplink_seid)
9870                         n++;     /* count the VEBs */
9871                 if (pf->veb[i]->seid == uplink_seid)
9872                         veb = pf->veb[i];
9873         }
9874         if (n == 0 && veb && veb->uplink_seid != 0)
9875                 i40e_veb_release(veb);
9876
9877         return 0;
9878 }
9879
9880 /**
9881  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9882  * @vsi: ptr to the VSI
9883  *
9884  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9885  * corresponding SW VSI structure and initializes num_queue_pairs for the
9886  * newly allocated VSI.
9887  *
9888  * Returns 0 on success or negative on failure
9889  **/
9890 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9891 {
9892         int ret = -ENOENT;
9893         struct i40e_pf *pf = vsi->back;
9894
9895         if (vsi->q_vectors[0]) {
9896                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9897                          vsi->seid);
9898                 return -EEXIST;
9899         }
9900
9901         if (vsi->base_vector) {
9902                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9903                          vsi->seid, vsi->base_vector);
9904                 return -EEXIST;
9905         }
9906
9907         ret = i40e_vsi_alloc_q_vectors(vsi);
9908         if (ret) {
9909                 dev_info(&pf->pdev->dev,
9910                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9911                          vsi->num_q_vectors, vsi->seid, ret);
9912                 vsi->num_q_vectors = 0;
9913                 goto vector_setup_out;
9914         }
9915
9916         /* In Legacy mode, we do not have to get any other vector since we
9917          * piggyback on the misc/ICR0 for queue interrupts.
9918         */
9919         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9920                 return ret;
9921         if (vsi->num_q_vectors)
9922                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9923                                                  vsi->num_q_vectors, vsi->idx);
9924         if (vsi->base_vector < 0) {
9925                 dev_info(&pf->pdev->dev,
9926                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9927                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9928                 i40e_vsi_free_q_vectors(vsi);
9929                 ret = -ENOENT;
9930                 goto vector_setup_out;
9931         }
9932
9933 vector_setup_out:
9934         return ret;
9935 }
9936
9937 /**
9938  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9939  * @vsi: pointer to the vsi.
9940  *
9941  * This re-allocates a vsi's queue resources.
9942  *
9943  * Returns pointer to the successfully allocated and configured VSI sw struct
9944  * on success, otherwise returns NULL on failure.
9945  **/
9946 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9947 {
9948         struct i40e_pf *pf;
9949         u8 enabled_tc;
9950         int ret;
9951
9952         if (!vsi)
9953                 return NULL;
9954
9955         pf = vsi->back;
9956
9957         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9958         i40e_vsi_clear_rings(vsi);
9959
9960         i40e_vsi_free_arrays(vsi, false);
9961         i40e_set_num_rings_in_vsi(vsi);
9962         ret = i40e_vsi_alloc_arrays(vsi, false);
9963         if (ret)
9964                 goto err_vsi;
9965
9966         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9967         if (ret < 0) {
9968                 dev_info(&pf->pdev->dev,
9969                          "failed to get tracking for %d queues for VSI %d err %d\n",
9970                          vsi->alloc_queue_pairs, vsi->seid, ret);
9971                 goto err_vsi;
9972         }
9973         vsi->base_queue = ret;
9974
9975         /* Update the FW view of the VSI. Force a reset of TC and queue
9976          * layout configurations.
9977          */
9978         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9979         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9980         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9981         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9982         if (vsi->type == I40E_VSI_MAIN)
9983                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9984
9985         /* assign it some queues */
9986         ret = i40e_alloc_rings(vsi);
9987         if (ret)
9988                 goto err_rings;
9989
9990         /* map all of the rings to the q_vectors */
9991         i40e_vsi_map_rings_to_vectors(vsi);
9992         return vsi;
9993
9994 err_rings:
9995         i40e_vsi_free_q_vectors(vsi);
9996         if (vsi->netdev_registered) {
9997                 vsi->netdev_registered = false;
9998                 unregister_netdev(vsi->netdev);
9999                 free_netdev(vsi->netdev);
10000                 vsi->netdev = NULL;
10001         }
10002         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
10003 err_vsi:
10004         i40e_vsi_clear(vsi);
10005         return NULL;
10006 }
10007
10008 /**
10009  * i40e_vsi_setup - Set up a VSI by a given type
10010  * @pf: board private structure
10011  * @type: VSI type
10012  * @uplink_seid: the switch element to link to
10013  * @param1: usage depends upon VSI type. For VF types, indicates VF id
10014  *
10015  * This allocates the sw VSI structure and its queue resources, then add a VSI
10016  * to the identified VEB.
10017  *
10018  * Returns pointer to the successfully allocated and configure VSI sw struct on
10019  * success, otherwise returns NULL on failure.
10020  **/
10021 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
10022                                 u16 uplink_seid, u32 param1)
10023 {
10024         struct i40e_vsi *vsi = NULL;
10025         struct i40e_veb *veb = NULL;
10026         int ret, i;
10027         int v_idx;
10028
10029         /* The requested uplink_seid must be either
10030          *     - the PF's port seid
10031          *              no VEB is needed because this is the PF
10032          *              or this is a Flow Director special case VSI
10033          *     - seid of an existing VEB
10034          *     - seid of a VSI that owns an existing VEB
10035          *     - seid of a VSI that doesn't own a VEB
10036          *              a new VEB is created and the VSI becomes the owner
10037          *     - seid of the PF VSI, which is what creates the first VEB
10038          *              this is a special case of the previous
10039          *
10040          * Find which uplink_seid we were given and create a new VEB if needed
10041          */
10042         for (i = 0; i < I40E_MAX_VEB; i++) {
10043                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
10044                         veb = pf->veb[i];
10045                         break;
10046                 }
10047         }
10048
10049         if (!veb && uplink_seid != pf->mac_seid) {
10050
10051                 for (i = 0; i < pf->num_alloc_vsi; i++) {
10052                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
10053                                 vsi = pf->vsi[i];
10054                                 break;
10055                         }
10056                 }
10057                 if (!vsi) {
10058                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
10059                                  uplink_seid);
10060                         return NULL;
10061                 }
10062
10063                 if (vsi->uplink_seid == pf->mac_seid)
10064                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
10065                                              vsi->tc_config.enabled_tc);
10066                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
10067                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
10068                                              vsi->tc_config.enabled_tc);
10069                 if (veb) {
10070                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
10071                                 dev_info(&vsi->back->pdev->dev,
10072                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
10073                                 return NULL;
10074                         }
10075                         /* We come up by default in VEPA mode if SRIOV is not
10076                          * already enabled, in which case we can't force VEPA
10077                          * mode.
10078                          */
10079                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
10080                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
10081                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
10082                         }
10083                         i40e_config_bridge_mode(veb);
10084                 }
10085                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
10086                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
10087                                 veb = pf->veb[i];
10088                 }
10089                 if (!veb) {
10090                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
10091                         return NULL;
10092                 }
10093
10094                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10095                 uplink_seid = veb->seid;
10096         }
10097
10098         /* get vsi sw struct */
10099         v_idx = i40e_vsi_mem_alloc(pf, type);
10100         if (v_idx < 0)
10101                 goto err_alloc;
10102         vsi = pf->vsi[v_idx];
10103         if (!vsi)
10104                 goto err_alloc;
10105         vsi->type = type;
10106         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
10107
10108         if (type == I40E_VSI_MAIN)
10109                 pf->lan_vsi = v_idx;
10110         else if (type == I40E_VSI_SRIOV)
10111                 vsi->vf_id = param1;
10112         /* assign it some queues */
10113         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
10114                                 vsi->idx);
10115         if (ret < 0) {
10116                 dev_info(&pf->pdev->dev,
10117                          "failed to get tracking for %d queues for VSI %d err=%d\n",
10118                          vsi->alloc_queue_pairs, vsi->seid, ret);
10119                 goto err_vsi;
10120         }
10121         vsi->base_queue = ret;
10122
10123         /* get a VSI from the hardware */
10124         vsi->uplink_seid = uplink_seid;
10125         ret = i40e_add_vsi(vsi);
10126         if (ret)
10127                 goto err_vsi;
10128
10129         switch (vsi->type) {
10130         /* setup the netdev if needed */
10131         case I40E_VSI_MAIN:
10132                 /* Apply relevant filters if a platform-specific mac
10133                  * address was selected.
10134                  */
10135                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
10136                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
10137                         if (ret) {
10138                                 dev_warn(&pf->pdev->dev,
10139                                          "could not set up macaddr; err %d\n",
10140                                          ret);
10141                         }
10142                 }
10143         case I40E_VSI_VMDQ2:
10144         case I40E_VSI_FCOE:
10145                 ret = i40e_config_netdev(vsi);
10146                 if (ret)
10147                         goto err_netdev;
10148                 ret = register_netdev(vsi->netdev);
10149                 if (ret)
10150                         goto err_netdev;
10151                 vsi->netdev_registered = true;
10152                 netif_carrier_off(vsi->netdev);
10153 #ifdef CONFIG_I40E_DCB
10154                 /* Setup DCB netlink interface */
10155                 i40e_dcbnl_setup(vsi);
10156 #endif /* CONFIG_I40E_DCB */
10157                 /* fall through */
10158
10159         case I40E_VSI_FDIR:
10160                 /* set up vectors and rings if needed */
10161                 ret = i40e_vsi_setup_vectors(vsi);
10162                 if (ret)
10163                         goto err_msix;
10164
10165                 ret = i40e_alloc_rings(vsi);
10166                 if (ret)
10167                         goto err_rings;
10168
10169                 /* map all of the rings to the q_vectors */
10170                 i40e_vsi_map_rings_to_vectors(vsi);
10171
10172                 i40e_vsi_reset_stats(vsi);
10173                 break;
10174
10175         default:
10176                 /* no netdev or rings for the other VSI types */
10177                 break;
10178         }
10179
10180         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
10181             (vsi->type == I40E_VSI_VMDQ2)) {
10182                 ret = i40e_vsi_config_rss(vsi);
10183         }
10184         return vsi;
10185
10186 err_rings:
10187         i40e_vsi_free_q_vectors(vsi);
10188 err_msix:
10189         if (vsi->netdev_registered) {
10190                 vsi->netdev_registered = false;
10191                 unregister_netdev(vsi->netdev);
10192                 free_netdev(vsi->netdev);
10193                 vsi->netdev = NULL;
10194         }
10195 err_netdev:
10196         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
10197 err_vsi:
10198         i40e_vsi_clear(vsi);
10199 err_alloc:
10200         return NULL;
10201 }
10202
10203 /**
10204  * i40e_veb_get_bw_info - Query VEB BW information
10205  * @veb: the veb to query
10206  *
10207  * Query the Tx scheduler BW configuration data for given VEB
10208  **/
10209 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
10210 {
10211         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
10212         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
10213         struct i40e_pf *pf = veb->pf;
10214         struct i40e_hw *hw = &pf->hw;
10215         u32 tc_bw_max;
10216         int ret = 0;
10217         int i;
10218
10219         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
10220                                                   &bw_data, NULL);
10221         if (ret) {
10222                 dev_info(&pf->pdev->dev,
10223                          "query veb bw config failed, err %s aq_err %s\n",
10224                          i40e_stat_str(&pf->hw, ret),
10225                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10226                 goto out;
10227         }
10228
10229         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
10230                                                    &ets_data, NULL);
10231         if (ret) {
10232                 dev_info(&pf->pdev->dev,
10233                          "query veb bw ets config failed, err %s aq_err %s\n",
10234                          i40e_stat_str(&pf->hw, ret),
10235                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10236                 goto out;
10237         }
10238
10239         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
10240         veb->bw_max_quanta = ets_data.tc_bw_max;
10241         veb->is_abs_credits = bw_data.absolute_credits_enable;
10242         veb->enabled_tc = ets_data.tc_valid_bits;
10243         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
10244                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
10245         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
10246                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
10247                 veb->bw_tc_limit_credits[i] =
10248                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
10249                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
10250         }
10251
10252 out:
10253         return ret;
10254 }
10255
10256 /**
10257  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
10258  * @pf: board private structure
10259  *
10260  * On error: returns error code (negative)
10261  * On success: returns vsi index in PF (positive)
10262  **/
10263 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
10264 {
10265         int ret = -ENOENT;
10266         struct i40e_veb *veb;
10267         int i;
10268
10269         /* Need to protect the allocation of switch elements at the PF level */
10270         mutex_lock(&pf->switch_mutex);
10271
10272         /* VEB list may be fragmented if VEB creation/destruction has
10273          * been happening.  We can afford to do a quick scan to look
10274          * for any free slots in the list.
10275          *
10276          * find next empty veb slot, looping back around if necessary
10277          */
10278         i = 0;
10279         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
10280                 i++;
10281         if (i >= I40E_MAX_VEB) {
10282                 ret = -ENOMEM;
10283                 goto err_alloc_veb;  /* out of VEB slots! */
10284         }
10285
10286         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10287         if (!veb) {
10288                 ret = -ENOMEM;
10289                 goto err_alloc_veb;
10290         }
10291         veb->pf = pf;
10292         veb->idx = i;
10293         veb->enabled_tc = 1;
10294
10295         pf->veb[i] = veb;
10296         ret = i;
10297 err_alloc_veb:
10298         mutex_unlock(&pf->switch_mutex);
10299         return ret;
10300 }
10301
10302 /**
10303  * i40e_switch_branch_release - Delete a branch of the switch tree
10304  * @branch: where to start deleting
10305  *
10306  * This uses recursion to find the tips of the branch to be
10307  * removed, deleting until we get back to and can delete this VEB.
10308  **/
10309 static void i40e_switch_branch_release(struct i40e_veb *branch)
10310 {
10311         struct i40e_pf *pf = branch->pf;
10312         u16 branch_seid = branch->seid;
10313         u16 veb_idx = branch->idx;
10314         int i;
10315
10316         /* release any VEBs on this VEB - RECURSION */
10317         for (i = 0; i < I40E_MAX_VEB; i++) {
10318                 if (!pf->veb[i])
10319                         continue;
10320                 if (pf->veb[i]->uplink_seid == branch->seid)
10321                         i40e_switch_branch_release(pf->veb[i]);
10322         }
10323
10324         /* Release the VSIs on this VEB, but not the owner VSI.
10325          *
10326          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10327          *       the VEB itself, so don't use (*branch) after this loop.
10328          */
10329         for (i = 0; i < pf->num_alloc_vsi; i++) {
10330                 if (!pf->vsi[i])
10331                         continue;
10332                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10333                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10334                         i40e_vsi_release(pf->vsi[i]);
10335                 }
10336         }
10337
10338         /* There's one corner case where the VEB might not have been
10339          * removed, so double check it here and remove it if needed.
10340          * This case happens if the veb was created from the debugfs
10341          * commands and no VSIs were added to it.
10342          */
10343         if (pf->veb[veb_idx])
10344                 i40e_veb_release(pf->veb[veb_idx]);
10345 }
10346
10347 /**
10348  * i40e_veb_clear - remove veb struct
10349  * @veb: the veb to remove
10350  **/
10351 static void i40e_veb_clear(struct i40e_veb *veb)
10352 {
10353         if (!veb)
10354                 return;
10355
10356         if (veb->pf) {
10357                 struct i40e_pf *pf = veb->pf;
10358
10359                 mutex_lock(&pf->switch_mutex);
10360                 if (pf->veb[veb->idx] == veb)
10361                         pf->veb[veb->idx] = NULL;
10362                 mutex_unlock(&pf->switch_mutex);
10363         }
10364
10365         kfree(veb);
10366 }
10367
10368 /**
10369  * i40e_veb_release - Delete a VEB and free its resources
10370  * @veb: the VEB being removed
10371  **/
10372 void i40e_veb_release(struct i40e_veb *veb)
10373 {
10374         struct i40e_vsi *vsi = NULL;
10375         struct i40e_pf *pf;
10376         int i, n = 0;
10377
10378         pf = veb->pf;
10379
10380         /* find the remaining VSI and check for extras */
10381         for (i = 0; i < pf->num_alloc_vsi; i++) {
10382                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10383                         n++;
10384                         vsi = pf->vsi[i];
10385                 }
10386         }
10387         if (n != 1) {
10388                 dev_info(&pf->pdev->dev,
10389                          "can't remove VEB %d with %d VSIs left\n",
10390                          veb->seid, n);
10391                 return;
10392         }
10393
10394         /* move the remaining VSI to uplink veb */
10395         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10396         if (veb->uplink_seid) {
10397                 vsi->uplink_seid = veb->uplink_seid;
10398                 if (veb->uplink_seid == pf->mac_seid)
10399                         vsi->veb_idx = I40E_NO_VEB;
10400                 else
10401                         vsi->veb_idx = veb->veb_idx;
10402         } else {
10403                 /* floating VEB */
10404                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10405                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10406         }
10407
10408         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10409         i40e_veb_clear(veb);
10410 }
10411
10412 /**
10413  * i40e_add_veb - create the VEB in the switch
10414  * @veb: the VEB to be instantiated
10415  * @vsi: the controlling VSI
10416  **/
10417 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10418 {
10419         struct i40e_pf *pf = veb->pf;
10420         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10421         int ret;
10422
10423         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10424                               veb->enabled_tc, false,
10425                               &veb->seid, enable_stats, NULL);
10426
10427         /* get a VEB from the hardware */
10428         if (ret) {
10429                 dev_info(&pf->pdev->dev,
10430                          "couldn't add VEB, err %s aq_err %s\n",
10431                          i40e_stat_str(&pf->hw, ret),
10432                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10433                 return -EPERM;
10434         }
10435
10436         /* get statistics counter */
10437         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10438                                          &veb->stats_idx, NULL, NULL, NULL);
10439         if (ret) {
10440                 dev_info(&pf->pdev->dev,
10441                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10442                          i40e_stat_str(&pf->hw, ret),
10443                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10444                 return -EPERM;
10445         }
10446         ret = i40e_veb_get_bw_info(veb);
10447         if (ret) {
10448                 dev_info(&pf->pdev->dev,
10449                          "couldn't get VEB bw info, err %s aq_err %s\n",
10450                          i40e_stat_str(&pf->hw, ret),
10451                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10452                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10453                 return -ENOENT;
10454         }
10455
10456         vsi->uplink_seid = veb->seid;
10457         vsi->veb_idx = veb->idx;
10458         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10459
10460         return 0;
10461 }
10462
10463 /**
10464  * i40e_veb_setup - Set up a VEB
10465  * @pf: board private structure
10466  * @flags: VEB setup flags
10467  * @uplink_seid: the switch element to link to
10468  * @vsi_seid: the initial VSI seid
10469  * @enabled_tc: Enabled TC bit-map
10470  *
10471  * This allocates the sw VEB structure and links it into the switch
10472  * It is possible and legal for this to be a duplicate of an already
10473  * existing VEB.  It is also possible for both uplink and vsi seids
10474  * to be zero, in order to create a floating VEB.
10475  *
10476  * Returns pointer to the successfully allocated VEB sw struct on
10477  * success, otherwise returns NULL on failure.
10478  **/
10479 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10480                                 u16 uplink_seid, u16 vsi_seid,
10481                                 u8 enabled_tc)
10482 {
10483         struct i40e_veb *veb, *uplink_veb = NULL;
10484         int vsi_idx, veb_idx;
10485         int ret;
10486
10487         /* if one seid is 0, the other must be 0 to create a floating relay */
10488         if ((uplink_seid == 0 || vsi_seid == 0) &&
10489             (uplink_seid + vsi_seid != 0)) {
10490                 dev_info(&pf->pdev->dev,
10491                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10492                          uplink_seid, vsi_seid);
10493                 return NULL;
10494         }
10495
10496         /* make sure there is such a vsi and uplink */
10497         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10498                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10499                         break;
10500         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10501                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10502                          vsi_seid);
10503                 return NULL;
10504         }
10505
10506         if (uplink_seid && uplink_seid != pf->mac_seid) {
10507                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10508                         if (pf->veb[veb_idx] &&
10509                             pf->veb[veb_idx]->seid == uplink_seid) {
10510                                 uplink_veb = pf->veb[veb_idx];
10511                                 break;
10512                         }
10513                 }
10514                 if (!uplink_veb) {
10515                         dev_info(&pf->pdev->dev,
10516                                  "uplink seid %d not found\n", uplink_seid);
10517                         return NULL;
10518                 }
10519         }
10520
10521         /* get veb sw struct */
10522         veb_idx = i40e_veb_mem_alloc(pf);
10523         if (veb_idx < 0)
10524                 goto err_alloc;
10525         veb = pf->veb[veb_idx];
10526         veb->flags = flags;
10527         veb->uplink_seid = uplink_seid;
10528         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10529         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10530
10531         /* create the VEB in the switch */
10532         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10533         if (ret)
10534                 goto err_veb;
10535         if (vsi_idx == pf->lan_vsi)
10536                 pf->lan_veb = veb->idx;
10537
10538         return veb;
10539
10540 err_veb:
10541         i40e_veb_clear(veb);
10542 err_alloc:
10543         return NULL;
10544 }
10545
10546 /**
10547  * i40e_setup_pf_switch_element - set PF vars based on switch type
10548  * @pf: board private structure
10549  * @ele: element we are building info from
10550  * @num_reported: total number of elements
10551  * @printconfig: should we print the contents
10552  *
10553  * helper function to assist in extracting a few useful SEID values.
10554  **/
10555 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10556                                 struct i40e_aqc_switch_config_element_resp *ele,
10557                                 u16 num_reported, bool printconfig)
10558 {
10559         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10560         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10561         u8 element_type = ele->element_type;
10562         u16 seid = le16_to_cpu(ele->seid);
10563
10564         if (printconfig)
10565                 dev_info(&pf->pdev->dev,
10566                          "type=%d seid=%d uplink=%d downlink=%d\n",
10567                          element_type, seid, uplink_seid, downlink_seid);
10568
10569         switch (element_type) {
10570         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10571                 pf->mac_seid = seid;
10572                 break;
10573         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10574                 /* Main VEB? */
10575                 if (uplink_seid != pf->mac_seid)
10576                         break;
10577                 if (pf->lan_veb == I40E_NO_VEB) {
10578                         int v;
10579
10580                         /* find existing or else empty VEB */
10581                         for (v = 0; v < I40E_MAX_VEB; v++) {
10582                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10583                                         pf->lan_veb = v;
10584                                         break;
10585                                 }
10586                         }
10587                         if (pf->lan_veb == I40E_NO_VEB) {
10588                                 v = i40e_veb_mem_alloc(pf);
10589                                 if (v < 0)
10590                                         break;
10591                                 pf->lan_veb = v;
10592                         }
10593                 }
10594
10595                 pf->veb[pf->lan_veb]->seid = seid;
10596                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10597                 pf->veb[pf->lan_veb]->pf = pf;
10598                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10599                 break;
10600         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10601                 if (num_reported != 1)
10602                         break;
10603                 /* This is immediately after a reset so we can assume this is
10604                  * the PF's VSI
10605                  */
10606                 pf->mac_seid = uplink_seid;
10607                 pf->pf_seid = downlink_seid;
10608                 pf->main_vsi_seid = seid;
10609                 if (printconfig)
10610                         dev_info(&pf->pdev->dev,
10611                                  "pf_seid=%d main_vsi_seid=%d\n",
10612                                  pf->pf_seid, pf->main_vsi_seid);
10613                 break;
10614         case I40E_SWITCH_ELEMENT_TYPE_PF:
10615         case I40E_SWITCH_ELEMENT_TYPE_VF:
10616         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10617         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10618         case I40E_SWITCH_ELEMENT_TYPE_PE:
10619         case I40E_SWITCH_ELEMENT_TYPE_PA:
10620                 /* ignore these for now */
10621                 break;
10622         default:
10623                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10624                          element_type, seid);
10625                 break;
10626         }
10627 }
10628
10629 /**
10630  * i40e_fetch_switch_configuration - Get switch config from firmware
10631  * @pf: board private structure
10632  * @printconfig: should we print the contents
10633  *
10634  * Get the current switch configuration from the device and
10635  * extract a few useful SEID values.
10636  **/
10637 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10638 {
10639         struct i40e_aqc_get_switch_config_resp *sw_config;
10640         u16 next_seid = 0;
10641         int ret = 0;
10642         u8 *aq_buf;
10643         int i;
10644
10645         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10646         if (!aq_buf)
10647                 return -ENOMEM;
10648
10649         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10650         do {
10651                 u16 num_reported, num_total;
10652
10653                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10654                                                 I40E_AQ_LARGE_BUF,
10655                                                 &next_seid, NULL);
10656                 if (ret) {
10657                         dev_info(&pf->pdev->dev,
10658                                  "get switch config failed err %s aq_err %s\n",
10659                                  i40e_stat_str(&pf->hw, ret),
10660                                  i40e_aq_str(&pf->hw,
10661                                              pf->hw.aq.asq_last_status));
10662                         kfree(aq_buf);
10663                         return -ENOENT;
10664                 }
10665
10666                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10667                 num_total = le16_to_cpu(sw_config->header.num_total);
10668
10669                 if (printconfig)
10670                         dev_info(&pf->pdev->dev,
10671                                  "header: %d reported %d total\n",
10672                                  num_reported, num_total);
10673
10674                 for (i = 0; i < num_reported; i++) {
10675                         struct i40e_aqc_switch_config_element_resp *ele =
10676                                 &sw_config->element[i];
10677
10678                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10679                                                      printconfig);
10680                 }
10681         } while (next_seid != 0);
10682
10683         kfree(aq_buf);
10684         return ret;
10685 }
10686
10687 /**
10688  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10689  * @pf: board private structure
10690  * @reinit: if the Main VSI needs to re-initialized.
10691  *
10692  * Returns 0 on success, negative value on failure
10693  **/
10694 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10695 {
10696         u16 flags = 0;
10697         int ret;
10698
10699         /* find out what's out there already */
10700         ret = i40e_fetch_switch_configuration(pf, false);
10701         if (ret) {
10702                 dev_info(&pf->pdev->dev,
10703                          "couldn't fetch switch config, err %s aq_err %s\n",
10704                          i40e_stat_str(&pf->hw, ret),
10705                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10706                 return ret;
10707         }
10708         i40e_pf_reset_stats(pf);
10709
10710         /* set the switch config bit for the whole device to
10711          * support limited promisc or true promisc
10712          * when user requests promisc. The default is limited
10713          * promisc.
10714         */
10715
10716         if ((pf->hw.pf_id == 0) &&
10717             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10718                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10719
10720         if (pf->hw.pf_id == 0) {
10721                 u16 valid_flags;
10722
10723                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10724                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10725                                                 NULL);
10726                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10727                         dev_info(&pf->pdev->dev,
10728                                  "couldn't set switch config bits, err %s aq_err %s\n",
10729                                  i40e_stat_str(&pf->hw, ret),
10730                                  i40e_aq_str(&pf->hw,
10731                                              pf->hw.aq.asq_last_status));
10732                         /* not a fatal problem, just keep going */
10733                 }
10734         }
10735
10736         /* first time setup */
10737         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10738                 struct i40e_vsi *vsi = NULL;
10739                 u16 uplink_seid;
10740
10741                 /* Set up the PF VSI associated with the PF's main VSI
10742                  * that is already in the HW switch
10743                  */
10744                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10745                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10746                 else
10747                         uplink_seid = pf->mac_seid;
10748                 if (pf->lan_vsi == I40E_NO_VSI)
10749                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10750                 else if (reinit)
10751                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10752                 if (!vsi) {
10753                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10754                         i40e_fdir_teardown(pf);
10755                         return -EAGAIN;
10756                 }
10757         } else {
10758                 /* force a reset of TC and queue layout configurations */
10759                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10760
10761                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10762                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10763                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10764         }
10765         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10766
10767         i40e_fdir_sb_setup(pf);
10768
10769         /* Setup static PF queue filter control settings */
10770         ret = i40e_setup_pf_filter_control(pf);
10771         if (ret) {
10772                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10773                          ret);
10774                 /* Failure here should not stop continuing other steps */
10775         }
10776
10777         /* enable RSS in the HW, even for only one queue, as the stack can use
10778          * the hash
10779          */
10780         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10781                 i40e_pf_config_rss(pf);
10782
10783         /* fill in link information and enable LSE reporting */
10784         i40e_link_event(pf);
10785
10786         /* Initialize user-specific link properties */
10787         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10788                                   I40E_AQ_AN_COMPLETED) ? true : false);
10789
10790         i40e_ptp_init(pf);
10791
10792         return ret;
10793 }
10794
10795 /**
10796  * i40e_determine_queue_usage - Work out queue distribution
10797  * @pf: board private structure
10798  **/
10799 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10800 {
10801         int queues_left;
10802
10803         pf->num_lan_qps = 0;
10804 #ifdef I40E_FCOE
10805         pf->num_fcoe_qps = 0;
10806 #endif
10807
10808         /* Find the max queues to be put into basic use.  We'll always be
10809          * using TC0, whether or not DCB is running, and TC0 will get the
10810          * big RSS set.
10811          */
10812         queues_left = pf->hw.func_caps.num_tx_qp;
10813
10814         if ((queues_left == 1) ||
10815             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10816                 /* one qp for PF, no queues for anything else */
10817                 queues_left = 0;
10818                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10819
10820                 /* make sure all the fancies are disabled */
10821                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10822                                I40E_FLAG_IWARP_ENABLED  |
10823 #ifdef I40E_FCOE
10824                                I40E_FLAG_FCOE_ENABLED   |
10825 #endif
10826                                I40E_FLAG_FD_SB_ENABLED  |
10827                                I40E_FLAG_FD_ATR_ENABLED |
10828                                I40E_FLAG_DCB_CAPABLE    |
10829                                I40E_FLAG_DCB_ENABLED    |
10830                                I40E_FLAG_SRIOV_ENABLED  |
10831                                I40E_FLAG_VMDQ_ENABLED);
10832         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10833                                   I40E_FLAG_FD_SB_ENABLED |
10834                                   I40E_FLAG_FD_ATR_ENABLED |
10835                                   I40E_FLAG_DCB_CAPABLE))) {
10836                 /* one qp for PF */
10837                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10838                 queues_left -= pf->num_lan_qps;
10839
10840                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10841                                I40E_FLAG_IWARP_ENABLED  |
10842 #ifdef I40E_FCOE
10843                                I40E_FLAG_FCOE_ENABLED   |
10844 #endif
10845                                I40E_FLAG_FD_SB_ENABLED  |
10846                                I40E_FLAG_FD_ATR_ENABLED |
10847                                I40E_FLAG_DCB_ENABLED    |
10848                                I40E_FLAG_VMDQ_ENABLED);
10849         } else {
10850                 /* Not enough queues for all TCs */
10851                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10852                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10853                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10854                                         I40E_FLAG_DCB_ENABLED);
10855                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10856                 }
10857                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10858                                         num_online_cpus());
10859                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10860                                         pf->hw.func_caps.num_tx_qp);
10861
10862                 queues_left -= pf->num_lan_qps;
10863         }
10864
10865 #ifdef I40E_FCOE
10866         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10867                 if (I40E_DEFAULT_FCOE <= queues_left) {
10868                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10869                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10870                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10871                 } else {
10872                         pf->num_fcoe_qps = 0;
10873                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10874                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10875                 }
10876
10877                 queues_left -= pf->num_fcoe_qps;
10878         }
10879
10880 #endif
10881         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10882                 if (queues_left > 1) {
10883                         queues_left -= 1; /* save 1 queue for FD */
10884                 } else {
10885                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10886                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10887                 }
10888         }
10889
10890         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10891             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10892                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10893                                         (queues_left / pf->num_vf_qps));
10894                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10895         }
10896
10897         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10898             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10899                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10900                                           (queues_left / pf->num_vmdq_qps));
10901                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10902         }
10903
10904         pf->queues_left = queues_left;
10905         dev_dbg(&pf->pdev->dev,
10906                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10907                 pf->hw.func_caps.num_tx_qp,
10908                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10909                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10910                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10911                 queues_left);
10912 #ifdef I40E_FCOE
10913         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10914 #endif
10915 }
10916
10917 /**
10918  * i40e_setup_pf_filter_control - Setup PF static filter control
10919  * @pf: PF to be setup
10920  *
10921  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10922  * settings. If PE/FCoE are enabled then it will also set the per PF
10923  * based filter sizes required for them. It also enables Flow director,
10924  * ethertype and macvlan type filter settings for the pf.
10925  *
10926  * Returns 0 on success, negative on failure
10927  **/
10928 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10929 {
10930         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10931
10932         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10933
10934         /* Flow Director is enabled */
10935         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10936                 settings->enable_fdir = true;
10937
10938         /* Ethtype and MACVLAN filters enabled for PF */
10939         settings->enable_ethtype = true;
10940         settings->enable_macvlan = true;
10941
10942         if (i40e_set_filter_control(&pf->hw, settings))
10943                 return -ENOENT;
10944
10945         return 0;
10946 }
10947
10948 #define INFO_STRING_LEN 255
10949 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10950 static void i40e_print_features(struct i40e_pf *pf)
10951 {
10952         struct i40e_hw *hw = &pf->hw;
10953         char *buf;
10954         int i;
10955
10956         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10957         if (!buf)
10958                 return;
10959
10960         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10961 #ifdef CONFIG_PCI_IOV
10962         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10963 #endif
10964         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10965                       pf->hw.func_caps.num_vsis,
10966                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10967         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10968                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10969         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10970                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10971         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10972                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10973                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10974         }
10975         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10976                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10977         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10978         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10979         if (pf->flags & I40E_FLAG_PTP)
10980                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10981 #ifdef I40E_FCOE
10982         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10983                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10984 #endif
10985         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10986                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10987         else
10988                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10989
10990         dev_info(&pf->pdev->dev, "%s\n", buf);
10991         kfree(buf);
10992         WARN_ON(i > INFO_STRING_LEN);
10993 }
10994
10995 /**
10996  * i40e_get_platform_mac_addr - get platform-specific MAC address
10997  *
10998  * @pdev: PCI device information struct
10999  * @pf: board private structure
11000  *
11001  * Look up the MAC address in Open Firmware  on systems that support it,
11002  * and use IDPROM on SPARC if no OF address is found. On return, the
11003  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
11004  * has been selected.
11005  **/
11006 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
11007 {
11008         pf->flags &= ~I40E_FLAG_PF_MAC;
11009         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
11010                 pf->flags |= I40E_FLAG_PF_MAC;
11011 }
11012
11013 /**
11014  * i40e_probe - Device initialization routine
11015  * @pdev: PCI device information struct
11016  * @ent: entry in i40e_pci_tbl
11017  *
11018  * i40e_probe initializes a PF identified by a pci_dev structure.
11019  * The OS initialization, configuring of the PF private structure,
11020  * and a hardware reset occur.
11021  *
11022  * Returns 0 on success, negative on failure
11023  **/
11024 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
11025 {
11026         struct i40e_aq_get_phy_abilities_resp abilities;
11027         struct i40e_pf *pf;
11028         struct i40e_hw *hw;
11029         static u16 pfs_found;
11030         u16 wol_nvm_bits;
11031         u16 link_status;
11032         int err;
11033         u32 val;
11034         u32 i;
11035         u8 set_fc_aq_fail;
11036
11037         err = pci_enable_device_mem(pdev);
11038         if (err)
11039                 return err;
11040
11041         /* set up for high or low dma */
11042         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
11043         if (err) {
11044                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
11045                 if (err) {
11046                         dev_err(&pdev->dev,
11047                                 "DMA configuration failed: 0x%x\n", err);
11048                         goto err_dma;
11049                 }
11050         }
11051
11052         /* set up pci connections */
11053         err = pci_request_mem_regions(pdev, i40e_driver_name);
11054         if (err) {
11055                 dev_info(&pdev->dev,
11056                          "pci_request_selected_regions failed %d\n", err);
11057                 goto err_pci_reg;
11058         }
11059
11060         pci_enable_pcie_error_reporting(pdev);
11061         pci_set_master(pdev);
11062
11063         /* Now that we have a PCI connection, we need to do the
11064          * low level device setup.  This is primarily setting up
11065          * the Admin Queue structures and then querying for the
11066          * device's current profile information.
11067          */
11068         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
11069         if (!pf) {
11070                 err = -ENOMEM;
11071                 goto err_pf_alloc;
11072         }
11073         pf->next_vsi = 0;
11074         pf->pdev = pdev;
11075         set_bit(__I40E_DOWN, &pf->state);
11076
11077         hw = &pf->hw;
11078         hw->back = pf;
11079
11080         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
11081                                 I40E_MAX_CSR_SPACE);
11082
11083         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
11084         if (!hw->hw_addr) {
11085                 err = -EIO;
11086                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
11087                          (unsigned int)pci_resource_start(pdev, 0),
11088                          pf->ioremap_len, err);
11089                 goto err_ioremap;
11090         }
11091         hw->vendor_id = pdev->vendor;
11092         hw->device_id = pdev->device;
11093         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
11094         hw->subsystem_vendor_id = pdev->subsystem_vendor;
11095         hw->subsystem_device_id = pdev->subsystem_device;
11096         hw->bus.device = PCI_SLOT(pdev->devfn);
11097         hw->bus.func = PCI_FUNC(pdev->devfn);
11098         hw->bus.bus_id = pdev->bus->number;
11099         pf->instance = pfs_found;
11100
11101         /* set up the locks for the AQ, do this only once in probe
11102          * and destroy them only once in remove
11103          */
11104         mutex_init(&hw->aq.asq_mutex);
11105         mutex_init(&hw->aq.arq_mutex);
11106
11107         pf->msg_enable = netif_msg_init(debug,
11108                                         NETIF_MSG_DRV |
11109                                         NETIF_MSG_PROBE |
11110                                         NETIF_MSG_LINK);
11111         if (debug < -1)
11112                 pf->hw.debug_mask = debug;
11113
11114         /* do a special CORER for clearing PXE mode once at init */
11115         if (hw->revision_id == 0 &&
11116             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
11117                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
11118                 i40e_flush(hw);
11119                 msleep(200);
11120                 pf->corer_count++;
11121
11122                 i40e_clear_pxe_mode(hw);
11123         }
11124
11125         /* Reset here to make sure all is clean and to define PF 'n' */
11126         i40e_clear_hw(hw);
11127         err = i40e_pf_reset(hw);
11128         if (err) {
11129                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
11130                 goto err_pf_reset;
11131         }
11132         pf->pfr_count++;
11133
11134         hw->aq.num_arq_entries = I40E_AQ_LEN;
11135         hw->aq.num_asq_entries = I40E_AQ_LEN;
11136         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11137         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11138         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
11139
11140         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
11141                  "%s-%s:misc",
11142                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
11143
11144         err = i40e_init_shared_code(hw);
11145         if (err) {
11146                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
11147                          err);
11148                 goto err_pf_reset;
11149         }
11150
11151         /* set up a default setting for link flow control */
11152         pf->hw.fc.requested_mode = I40E_FC_NONE;
11153
11154         err = i40e_init_adminq(hw);
11155         if (err) {
11156                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
11157                         dev_info(&pdev->dev,
11158                                  "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
11159                 else
11160                         dev_info(&pdev->dev,
11161                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
11162
11163                 goto err_pf_reset;
11164         }
11165
11166         /* provide nvm, fw, api versions */
11167         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
11168                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
11169                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
11170                  i40e_nvm_version_str(hw));
11171
11172         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
11173             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
11174                 dev_info(&pdev->dev,
11175                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
11176         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
11177                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
11178                 dev_info(&pdev->dev,
11179                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
11180
11181         i40e_verify_eeprom(pf);
11182
11183         /* Rev 0 hardware was never productized */
11184         if (hw->revision_id < 1)
11185                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
11186
11187         i40e_clear_pxe_mode(hw);
11188         err = i40e_get_capabilities(pf);
11189         if (err)
11190                 goto err_adminq_setup;
11191
11192         err = i40e_sw_init(pf);
11193         if (err) {
11194                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
11195                 goto err_sw_init;
11196         }
11197
11198         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
11199                                 hw->func_caps.num_rx_qp,
11200                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
11201         if (err) {
11202                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
11203                 goto err_init_lan_hmc;
11204         }
11205
11206         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
11207         if (err) {
11208                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
11209                 err = -ENOENT;
11210                 goto err_configure_lan_hmc;
11211         }
11212
11213         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
11214          * Ignore error return codes because if it was already disabled via
11215          * hardware settings this will fail
11216          */
11217         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
11218                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
11219                 i40e_aq_stop_lldp(hw, true, NULL);
11220         }
11221
11222         i40e_get_mac_addr(hw, hw->mac.addr);
11223         /* allow a platform config to override the HW addr */
11224         i40e_get_platform_mac_addr(pdev, pf);
11225         if (!is_valid_ether_addr(hw->mac.addr)) {
11226                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
11227                 err = -EIO;
11228                 goto err_mac_addr;
11229         }
11230         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
11231         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
11232         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
11233         if (is_valid_ether_addr(hw->mac.port_addr))
11234                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
11235 #ifdef I40E_FCOE
11236         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
11237         if (err)
11238                 dev_info(&pdev->dev,
11239                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
11240         if (!is_valid_ether_addr(hw->mac.san_addr)) {
11241                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
11242                          hw->mac.san_addr);
11243                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
11244         }
11245         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
11246 #endif /* I40E_FCOE */
11247
11248         pci_set_drvdata(pdev, pf);
11249         pci_save_state(pdev);
11250 #ifdef CONFIG_I40E_DCB
11251         err = i40e_init_pf_dcb(pf);
11252         if (err) {
11253                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
11254                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
11255                 /* Continue without DCB enabled */
11256         }
11257 #endif /* CONFIG_I40E_DCB */
11258
11259         /* set up periodic task facility */
11260         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
11261         pf->service_timer_period = HZ;
11262
11263         INIT_WORK(&pf->service_task, i40e_service_task);
11264         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
11265         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
11266
11267         /* NVM bit on means WoL disabled for the port */
11268         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
11269         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
11270                 pf->wol_en = false;
11271         else
11272                 pf->wol_en = true;
11273         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
11274
11275         /* set up the main switch operations */
11276         i40e_determine_queue_usage(pf);
11277         err = i40e_init_interrupt_scheme(pf);
11278         if (err)
11279                 goto err_switch_setup;
11280
11281         /* The number of VSIs reported by the FW is the minimum guaranteed
11282          * to us; HW supports far more and we share the remaining pool with
11283          * the other PFs. We allocate space for more than the guarantee with
11284          * the understanding that we might not get them all later.
11285          */
11286         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11287                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11288         else
11289                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11290
11291         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11292         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11293                           GFP_KERNEL);
11294         if (!pf->vsi) {
11295                 err = -ENOMEM;
11296                 goto err_switch_setup;
11297         }
11298
11299 #ifdef CONFIG_PCI_IOV
11300         /* prep for VF support */
11301         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11302             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11303             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11304                 if (pci_num_vf(pdev))
11305                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11306         }
11307 #endif
11308         err = i40e_setup_pf_switch(pf, false);
11309         if (err) {
11310                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11311                 goto err_vsis;
11312         }
11313
11314         /* Make sure flow control is set according to current settings */
11315         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11316         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11317                 dev_dbg(&pf->pdev->dev,
11318                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11319                         i40e_stat_str(hw, err),
11320                         i40e_aq_str(hw, hw->aq.asq_last_status));
11321         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11322                 dev_dbg(&pf->pdev->dev,
11323                         "Set fc with err %s aq_err %s on set_phy_config\n",
11324                         i40e_stat_str(hw, err),
11325                         i40e_aq_str(hw, hw->aq.asq_last_status));
11326         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11327                 dev_dbg(&pf->pdev->dev,
11328                         "Set fc with err %s aq_err %s on get_link_info\n",
11329                         i40e_stat_str(hw, err),
11330                         i40e_aq_str(hw, hw->aq.asq_last_status));
11331
11332         /* if FDIR VSI was set up, start it now */
11333         for (i = 0; i < pf->num_alloc_vsi; i++) {
11334                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11335                         i40e_vsi_open(pf->vsi[i]);
11336                         break;
11337                 }
11338         }
11339
11340         /* The driver only wants link up/down and module qualification
11341          * reports from firmware.  Note the negative logic.
11342          */
11343         err = i40e_aq_set_phy_int_mask(&pf->hw,
11344                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11345                                          I40E_AQ_EVENT_MEDIA_NA |
11346                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11347         if (err)
11348                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11349                          i40e_stat_str(&pf->hw, err),
11350                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11351
11352         /* Reconfigure hardware for allowing smaller MSS in the case
11353          * of TSO, so that we avoid the MDD being fired and causing
11354          * a reset in the case of small MSS+TSO.
11355          */
11356         val = rd32(hw, I40E_REG_MSS);
11357         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11358                 val &= ~I40E_REG_MSS_MIN_MASK;
11359                 val |= I40E_64BYTE_MSS;
11360                 wr32(hw, I40E_REG_MSS, val);
11361         }
11362
11363         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11364                 msleep(75);
11365                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11366                 if (err)
11367                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11368                                  i40e_stat_str(&pf->hw, err),
11369                                  i40e_aq_str(&pf->hw,
11370                                              pf->hw.aq.asq_last_status));
11371         }
11372         /* The main driver is (mostly) up and happy. We need to set this state
11373          * before setting up the misc vector or we get a race and the vector
11374          * ends up disabled forever.
11375          */
11376         clear_bit(__I40E_DOWN, &pf->state);
11377
11378         /* In case of MSIX we are going to setup the misc vector right here
11379          * to handle admin queue events etc. In case of legacy and MSI
11380          * the misc functionality and queue processing is combined in
11381          * the same vector and that gets setup at open.
11382          */
11383         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11384                 err = i40e_setup_misc_vector(pf);
11385                 if (err) {
11386                         dev_info(&pdev->dev,
11387                                  "setup of misc vector failed: %d\n", err);
11388                         goto err_vsis;
11389                 }
11390         }
11391
11392 #ifdef CONFIG_PCI_IOV
11393         /* prep for VF support */
11394         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11395             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11396             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11397                 /* disable link interrupts for VFs */
11398                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11399                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11400                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11401                 i40e_flush(hw);
11402
11403                 if (pci_num_vf(pdev)) {
11404                         dev_info(&pdev->dev,
11405                                  "Active VFs found, allocating resources.\n");
11406                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11407                         if (err)
11408                                 dev_info(&pdev->dev,
11409                                          "Error %d allocating resources for existing VFs\n",
11410                                          err);
11411                 }
11412         }
11413 #endif /* CONFIG_PCI_IOV */
11414
11415         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11416                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11417                                                       pf->num_iwarp_msix,
11418                                                       I40E_IWARP_IRQ_PILE_ID);
11419                 if (pf->iwarp_base_vector < 0) {
11420                         dev_info(&pdev->dev,
11421                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11422                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11423                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11424                 }
11425         }
11426
11427         i40e_dbg_pf_init(pf);
11428
11429         /* tell the firmware that we're starting */
11430         i40e_send_version(pf);
11431
11432         /* since everything's happy, start the service_task timer */
11433         mod_timer(&pf->service_timer,
11434                   round_jiffies(jiffies + pf->service_timer_period));
11435
11436         /* add this PF to client device list and launch a client service task */
11437         err = i40e_lan_add_device(pf);
11438         if (err)
11439                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11440                          err);
11441
11442 #ifdef I40E_FCOE
11443         /* create FCoE interface */
11444         i40e_fcoe_vsi_setup(pf);
11445
11446 #endif
11447 #define PCI_SPEED_SIZE 8
11448 #define PCI_WIDTH_SIZE 8
11449         /* Devices on the IOSF bus do not have this information
11450          * and will report PCI Gen 1 x 1 by default so don't bother
11451          * checking them.
11452          */
11453         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11454                 char speed[PCI_SPEED_SIZE] = "Unknown";
11455                 char width[PCI_WIDTH_SIZE] = "Unknown";
11456
11457                 /* Get the negotiated link width and speed from PCI config
11458                  * space
11459                  */
11460                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11461                                           &link_status);
11462
11463                 i40e_set_pci_config_data(hw, link_status);
11464
11465                 switch (hw->bus.speed) {
11466                 case i40e_bus_speed_8000:
11467                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11468                 case i40e_bus_speed_5000:
11469                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11470                 case i40e_bus_speed_2500:
11471                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11472                 default:
11473                         break;
11474                 }
11475                 switch (hw->bus.width) {
11476                 case i40e_bus_width_pcie_x8:
11477                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11478                 case i40e_bus_width_pcie_x4:
11479                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11480                 case i40e_bus_width_pcie_x2:
11481                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11482                 case i40e_bus_width_pcie_x1:
11483                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11484                 default:
11485                         break;
11486                 }
11487
11488                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11489                          speed, width);
11490
11491                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11492                     hw->bus.speed < i40e_bus_speed_8000) {
11493                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11494                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11495                 }
11496         }
11497
11498         /* get the requested speeds from the fw */
11499         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11500         if (err)
11501                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11502                         i40e_stat_str(&pf->hw, err),
11503                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11504         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11505
11506         /* get the supported phy types from the fw */
11507         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11508         if (err)
11509                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11510                         i40e_stat_str(&pf->hw, err),
11511                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11512
11513         /* Add a filter to drop all Flow control frames from any VSI from being
11514          * transmitted. By doing so we stop a malicious VF from sending out
11515          * PAUSE or PFC frames and potentially controlling traffic for other
11516          * PF/VF VSIs.
11517          * The FW can still send Flow control frames if enabled.
11518          */
11519         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11520                                                        pf->main_vsi_seid);
11521
11522         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11523                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11524                 pf->flags |= I40E_FLAG_PHY_CONTROLS_LEDS;
11525         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
11526                 pf->flags |= I40E_FLAG_HAVE_CRT_RETIMER;
11527         /* print a string summarizing features */
11528         i40e_print_features(pf);
11529
11530         return 0;
11531
11532         /* Unwind what we've done if something failed in the setup */
11533 err_vsis:
11534         set_bit(__I40E_DOWN, &pf->state);
11535         i40e_clear_interrupt_scheme(pf);
11536         kfree(pf->vsi);
11537 err_switch_setup:
11538         i40e_reset_interrupt_capability(pf);
11539         del_timer_sync(&pf->service_timer);
11540 err_mac_addr:
11541 err_configure_lan_hmc:
11542         (void)i40e_shutdown_lan_hmc(hw);
11543 err_init_lan_hmc:
11544         kfree(pf->qp_pile);
11545 err_sw_init:
11546 err_adminq_setup:
11547 err_pf_reset:
11548         iounmap(hw->hw_addr);
11549 err_ioremap:
11550         kfree(pf);
11551 err_pf_alloc:
11552         pci_disable_pcie_error_reporting(pdev);
11553         pci_release_mem_regions(pdev);
11554 err_pci_reg:
11555 err_dma:
11556         pci_disable_device(pdev);
11557         return err;
11558 }
11559
11560 /**
11561  * i40e_remove - Device removal routine
11562  * @pdev: PCI device information struct
11563  *
11564  * i40e_remove is called by the PCI subsystem to alert the driver
11565  * that is should release a PCI device.  This could be caused by a
11566  * Hot-Plug event, or because the driver is going to be removed from
11567  * memory.
11568  **/
11569 static void i40e_remove(struct pci_dev *pdev)
11570 {
11571         struct i40e_pf *pf = pci_get_drvdata(pdev);
11572         struct i40e_hw *hw = &pf->hw;
11573         i40e_status ret_code;
11574         int i;
11575
11576         i40e_dbg_pf_exit(pf);
11577
11578         i40e_ptp_stop(pf);
11579
11580         /* Disable RSS in hw */
11581         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11582         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11583
11584         /* no more scheduling of any task */
11585         set_bit(__I40E_SUSPENDED, &pf->state);
11586         set_bit(__I40E_DOWN, &pf->state);
11587         if (pf->service_timer.data)
11588                 del_timer_sync(&pf->service_timer);
11589         if (pf->service_task.func)
11590                 cancel_work_sync(&pf->service_task);
11591
11592         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11593                 i40e_free_vfs(pf);
11594                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11595         }
11596
11597         i40e_fdir_teardown(pf);
11598
11599         /* If there is a switch structure or any orphans, remove them.
11600          * This will leave only the PF's VSI remaining.
11601          */
11602         for (i = 0; i < I40E_MAX_VEB; i++) {
11603                 if (!pf->veb[i])
11604                         continue;
11605
11606                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11607                     pf->veb[i]->uplink_seid == 0)
11608                         i40e_switch_branch_release(pf->veb[i]);
11609         }
11610
11611         /* Now we can shutdown the PF's VSI, just before we kill
11612          * adminq and hmc.
11613          */
11614         if (pf->vsi[pf->lan_vsi])
11615                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11616
11617         /* remove attached clients */
11618         ret_code = i40e_lan_del_device(pf);
11619         if (ret_code) {
11620                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11621                          ret_code);
11622         }
11623
11624         /* shutdown and destroy the HMC */
11625         if (hw->hmc.hmc_obj) {
11626                 ret_code = i40e_shutdown_lan_hmc(hw);
11627                 if (ret_code)
11628                         dev_warn(&pdev->dev,
11629                                  "Failed to destroy the HMC resources: %d\n",
11630                                  ret_code);
11631         }
11632
11633         /* shutdown the adminq */
11634         i40e_shutdown_adminq(hw);
11635
11636         /* destroy the locks only once, here */
11637         mutex_destroy(&hw->aq.arq_mutex);
11638         mutex_destroy(&hw->aq.asq_mutex);
11639
11640         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11641         i40e_clear_interrupt_scheme(pf);
11642         for (i = 0; i < pf->num_alloc_vsi; i++) {
11643                 if (pf->vsi[i]) {
11644                         i40e_vsi_clear_rings(pf->vsi[i]);
11645                         i40e_vsi_clear(pf->vsi[i]);
11646                         pf->vsi[i] = NULL;
11647                 }
11648         }
11649
11650         for (i = 0; i < I40E_MAX_VEB; i++) {
11651                 kfree(pf->veb[i]);
11652                 pf->veb[i] = NULL;
11653         }
11654
11655         kfree(pf->qp_pile);
11656         kfree(pf->vsi);
11657
11658         iounmap(hw->hw_addr);
11659         kfree(pf);
11660         pci_release_mem_regions(pdev);
11661
11662         pci_disable_pcie_error_reporting(pdev);
11663         pci_disable_device(pdev);
11664 }
11665
11666 /**
11667  * i40e_pci_error_detected - warning that something funky happened in PCI land
11668  * @pdev: PCI device information struct
11669  *
11670  * Called to warn that something happened and the error handling steps
11671  * are in progress.  Allows the driver to quiesce things, be ready for
11672  * remediation.
11673  **/
11674 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11675                                                 enum pci_channel_state error)
11676 {
11677         struct i40e_pf *pf = pci_get_drvdata(pdev);
11678
11679         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11680
11681         if (!pf) {
11682                 dev_info(&pdev->dev,
11683                          "Cannot recover - error happened during device probe\n");
11684                 return PCI_ERS_RESULT_DISCONNECT;
11685         }
11686
11687         /* shutdown all operations */
11688         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11689                 rtnl_lock();
11690                 i40e_prep_for_reset(pf);
11691                 rtnl_unlock();
11692         }
11693
11694         /* Request a slot reset */
11695         return PCI_ERS_RESULT_NEED_RESET;
11696 }
11697
11698 /**
11699  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11700  * @pdev: PCI device information struct
11701  *
11702  * Called to find if the driver can work with the device now that
11703  * the pci slot has been reset.  If a basic connection seems good
11704  * (registers are readable and have sane content) then return a
11705  * happy little PCI_ERS_RESULT_xxx.
11706  **/
11707 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11708 {
11709         struct i40e_pf *pf = pci_get_drvdata(pdev);
11710         pci_ers_result_t result;
11711         int err;
11712         u32 reg;
11713
11714         dev_dbg(&pdev->dev, "%s\n", __func__);
11715         if (pci_enable_device_mem(pdev)) {
11716                 dev_info(&pdev->dev,
11717                          "Cannot re-enable PCI device after reset.\n");
11718                 result = PCI_ERS_RESULT_DISCONNECT;
11719         } else {
11720                 pci_set_master(pdev);
11721                 pci_restore_state(pdev);
11722                 pci_save_state(pdev);
11723                 pci_wake_from_d3(pdev, false);
11724
11725                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11726                 if (reg == 0)
11727                         result = PCI_ERS_RESULT_RECOVERED;
11728                 else
11729                         result = PCI_ERS_RESULT_DISCONNECT;
11730         }
11731
11732         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11733         if (err) {
11734                 dev_info(&pdev->dev,
11735                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11736                          err);
11737                 /* non-fatal, continue */
11738         }
11739
11740         return result;
11741 }
11742
11743 /**
11744  * i40e_pci_error_resume - restart operations after PCI error recovery
11745  * @pdev: PCI device information struct
11746  *
11747  * Called to allow the driver to bring things back up after PCI error
11748  * and/or reset recovery has finished.
11749  **/
11750 static void i40e_pci_error_resume(struct pci_dev *pdev)
11751 {
11752         struct i40e_pf *pf = pci_get_drvdata(pdev);
11753
11754         dev_dbg(&pdev->dev, "%s\n", __func__);
11755         if (test_bit(__I40E_SUSPENDED, &pf->state))
11756                 return;
11757
11758         rtnl_lock();
11759         i40e_handle_reset_warning(pf);
11760         rtnl_unlock();
11761 }
11762
11763 /**
11764  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
11765  * using the mac_address_write admin q function
11766  * @pf: pointer to i40e_pf struct
11767  **/
11768 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
11769 {
11770         struct i40e_hw *hw = &pf->hw;
11771         i40e_status ret;
11772         u8 mac_addr[6];
11773         u16 flags = 0;
11774
11775         /* Get current MAC address in case it's an LAA */
11776         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
11777                 ether_addr_copy(mac_addr,
11778                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
11779         } else {
11780                 dev_err(&pf->pdev->dev,
11781                         "Failed to retrieve MAC address; using default\n");
11782                 ether_addr_copy(mac_addr, hw->mac.addr);
11783         }
11784
11785         /* The FW expects the mac address write cmd to first be called with
11786          * one of these flags before calling it again with the multicast
11787          * enable flags.
11788          */
11789         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
11790
11791         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
11792                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
11793
11794         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
11795         if (ret) {
11796                 dev_err(&pf->pdev->dev,
11797                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
11798                 return;
11799         }
11800
11801         flags = I40E_AQC_MC_MAG_EN
11802                         | I40E_AQC_WOL_PRESERVE_ON_PFR
11803                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
11804         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
11805         if (ret)
11806                 dev_err(&pf->pdev->dev,
11807                         "Failed to enable Multicast Magic Packet wake up\n");
11808 }
11809
11810 /**
11811  * i40e_shutdown - PCI callback for shutting down
11812  * @pdev: PCI device information struct
11813  **/
11814 static void i40e_shutdown(struct pci_dev *pdev)
11815 {
11816         struct i40e_pf *pf = pci_get_drvdata(pdev);
11817         struct i40e_hw *hw = &pf->hw;
11818
11819         set_bit(__I40E_SUSPENDED, &pf->state);
11820         set_bit(__I40E_DOWN, &pf->state);
11821         rtnl_lock();
11822         i40e_prep_for_reset(pf);
11823         rtnl_unlock();
11824
11825         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11826         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11827
11828         del_timer_sync(&pf->service_timer);
11829         cancel_work_sync(&pf->service_task);
11830         i40e_fdir_teardown(pf);
11831
11832         if (pf->wol_en && (pf->flags & I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE))
11833                 i40e_enable_mc_magic_wake(pf);
11834
11835         rtnl_lock();
11836         i40e_prep_for_reset(pf);
11837         rtnl_unlock();
11838
11839         wr32(hw, I40E_PFPM_APM,
11840              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11841         wr32(hw, I40E_PFPM_WUFC,
11842              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11843
11844         i40e_clear_interrupt_scheme(pf);
11845
11846         if (system_state == SYSTEM_POWER_OFF) {
11847                 pci_wake_from_d3(pdev, pf->wol_en);
11848                 pci_set_power_state(pdev, PCI_D3hot);
11849         }
11850 }
11851
11852 #ifdef CONFIG_PM
11853 /**
11854  * i40e_suspend - PCI callback for moving to D3
11855  * @pdev: PCI device information struct
11856  **/
11857 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11858 {
11859         struct i40e_pf *pf = pci_get_drvdata(pdev);
11860         struct i40e_hw *hw = &pf->hw;
11861         int retval = 0;
11862
11863         set_bit(__I40E_SUSPENDED, &pf->state);
11864         set_bit(__I40E_DOWN, &pf->state);
11865
11866         if (pf->wol_en && (pf->flags & I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE))
11867                 i40e_enable_mc_magic_wake(pf);
11868
11869         rtnl_lock();
11870         i40e_prep_for_reset(pf);
11871         rtnl_unlock();
11872
11873         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11874         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11875
11876         i40e_stop_misc_vector(pf);
11877
11878         retval = pci_save_state(pdev);
11879         if (retval)
11880                 return retval;
11881
11882         pci_wake_from_d3(pdev, pf->wol_en);
11883         pci_set_power_state(pdev, PCI_D3hot);
11884
11885         return retval;
11886 }
11887
11888 /**
11889  * i40e_resume - PCI callback for waking up from D3
11890  * @pdev: PCI device information struct
11891  **/
11892 static int i40e_resume(struct pci_dev *pdev)
11893 {
11894         struct i40e_pf *pf = pci_get_drvdata(pdev);
11895         u32 err;
11896
11897         pci_set_power_state(pdev, PCI_D0);
11898         pci_restore_state(pdev);
11899         /* pci_restore_state() clears dev->state_saves, so
11900          * call pci_save_state() again to restore it.
11901          */
11902         pci_save_state(pdev);
11903
11904         err = pci_enable_device_mem(pdev);
11905         if (err) {
11906                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11907                 return err;
11908         }
11909         pci_set_master(pdev);
11910
11911         /* no wakeup events while running */
11912         pci_wake_from_d3(pdev, false);
11913
11914         /* handling the reset will rebuild the device state */
11915         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11916                 clear_bit(__I40E_DOWN, &pf->state);
11917                 rtnl_lock();
11918                 i40e_reset_and_rebuild(pf, false);
11919                 rtnl_unlock();
11920         }
11921
11922         return 0;
11923 }
11924
11925 #endif
11926 static const struct pci_error_handlers i40e_err_handler = {
11927         .error_detected = i40e_pci_error_detected,
11928         .slot_reset = i40e_pci_error_slot_reset,
11929         .resume = i40e_pci_error_resume,
11930 };
11931
11932 static struct pci_driver i40e_driver = {
11933         .name     = i40e_driver_name,
11934         .id_table = i40e_pci_tbl,
11935         .probe    = i40e_probe,
11936         .remove   = i40e_remove,
11937 #ifdef CONFIG_PM
11938         .suspend  = i40e_suspend,
11939         .resume   = i40e_resume,
11940 #endif
11941         .shutdown = i40e_shutdown,
11942         .err_handler = &i40e_err_handler,
11943         .sriov_configure = i40e_pci_sriov_configure,
11944 };
11945
11946 /**
11947  * i40e_init_module - Driver registration routine
11948  *
11949  * i40e_init_module is the first routine called when the driver is
11950  * loaded. All it does is register with the PCI subsystem.
11951  **/
11952 static int __init i40e_init_module(void)
11953 {
11954         pr_info("%s: %s - version %s\n", i40e_driver_name,
11955                 i40e_driver_string, i40e_driver_version_str);
11956         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11957
11958         /* we will see if single thread per module is enough for now,
11959          * it can't be any worse than using the system workqueue which
11960          * was already single threaded
11961          */
11962         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
11963                                   i40e_driver_name);
11964         if (!i40e_wq) {
11965                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11966                 return -ENOMEM;
11967         }
11968
11969         i40e_dbg_init();
11970         return pci_register_driver(&i40e_driver);
11971 }
11972 module_init(i40e_init_module);
11973
11974 /**
11975  * i40e_exit_module - Driver exit cleanup routine
11976  *
11977  * i40e_exit_module is called just before the driver is removed
11978  * from memory.
11979  **/
11980 static void __exit i40e_exit_module(void)
11981 {
11982         pci_unregister_driver(&i40e_driver);
11983         destroy_workqueue(i40e_wq);
11984         i40e_dbg_exit();
11985 }
11986 module_exit(i40e_exit_module);