drivers/net/ethernet/rocker/rocker.c

   1 /*
   2  * drivers/net/ethernet/rocker/rocker.c - Rocker switch device driver
   3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
   4  * Copyright (c) 2014 Scott Feldman <sfeldma@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  */
  11
  12 #include <linux/kernel.h>
  13 #include <linux/module.h>
  14 #include <linux/pci.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/sched.h>
  17 #include <linux/wait.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/hashtable.h>
  20 #include <linux/crc32.h>
  21 #include <linux/sort.h>
  22 #include <linux/random.h>
  23 #include <linux/netdevice.h>
  24 #include <linux/inetdevice.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/socket.h>
  27 #include <linux/etherdevice.h>
  28 #include <linux/ethtool.h>
  29 #include <linux/if_ether.h>
  30 #include <linux/if_vlan.h>
  31 #include <linux/if_bridge.h>
  32 #include <linux/bitops.h>
  33 #include <net/switchdev.h>
  34 #include <net/rtnetlink.h>
  35 #include <asm-generic/io-64-nonatomic-lo-hi.h>
  36 #include <generated/utsrelease.h>
  37
  38 #include "rocker.h"
  39
  40 static const char rocker_driver_name[] = "rocker";
  41
  42 static const struct pci_device_id rocker_pci_id_table[] = {
  43         {PCI_VDEVICE(REDHAT, PCI_DEVICE_ID_REDHAT_ROCKER), 0},
  44         {0, }
  45 };
  46
  47 struct rocker_flow_tbl_key {
  48         u32 priority;
  49         enum rocker_of_dpa_table_id tbl_id;
  50         union {
  51                 struct {
  52                         u32 in_lport;
  53                         u32 in_lport_mask;
  54                         enum rocker_of_dpa_table_id goto_tbl;
  55                 } ig_port;
  56                 struct {
  57                         u32 in_lport;
  58                         __be16 vlan_id;
  59                         __be16 vlan_id_mask;
  60                         enum rocker_of_dpa_table_id goto_tbl;
  61                         bool untagged;
  62                         __be16 new_vlan_id;
  63                 } vlan;
  64                 struct {
  65                         u32 in_lport;
  66                         u32 in_lport_mask;
  67                         __be16 eth_type;
  68                         u8 eth_dst[ETH_ALEN];
  69                         u8 eth_dst_mask[ETH_ALEN];
  70                         __be16 vlan_id;
  71                         __be16 vlan_id_mask;
  72                         enum rocker_of_dpa_table_id goto_tbl;
  73                         bool copy_to_cpu;
  74                 } term_mac;
  75                 struct {
  76                         __be16 eth_type;
  77                         __be32 dst4;
  78                         __be32 dst4_mask;
  79                         enum rocker_of_dpa_table_id goto_tbl;
  80                         u32 group_id;
  81                 } ucast_routing;
  82                 struct {
  83                         u8 eth_dst[ETH_ALEN];
  84                         u8 eth_dst_mask[ETH_ALEN];
  85                         int has_eth_dst;
  86                         int has_eth_dst_mask;
  87                         __be16 vlan_id;
  88                         u32 tunnel_id;
  89                         enum rocker_of_dpa_table_id goto_tbl;
  90                         u32 group_id;
  91                         bool copy_to_cpu;
  92                 } bridge;
  93                 struct {
  94                         u32 in_lport;
  95                         u32 in_lport_mask;
  96                         u8 eth_src[ETH_ALEN];
  97                         u8 eth_src_mask[ETH_ALEN];
  98                         u8 eth_dst[ETH_ALEN];
  99                         u8 eth_dst_mask[ETH_ALEN];
 100                         __be16 eth_type;
 101                         __be16 vlan_id;
 102                         __be16 vlan_id_mask;
 103                         u8 ip_proto;
 104                         u8 ip_proto_mask;
 105                         u8 ip_tos;
 106                         u8 ip_tos_mask;
 107                         u32 group_id;
 108                 } acl;
 109         };
 110 };
 111
 112 struct rocker_flow_tbl_entry {
 113         struct hlist_node entry;
 114         u32 ref_count;
 115         u64 cookie;
 116         struct rocker_flow_tbl_key key;
 117         u32 key_crc32; /* key */
 118 };
 119
 120 struct rocker_group_tbl_entry {
 121         struct hlist_node entry;
 122         u32 cmd;
 123         u32 group_id; /* key */
 124         u16 group_count;
 125         u32 *group_ids;
 126         union {
 127                 struct {
 128                         u8 pop_vlan;
 129                 } l2_interface;
 130                 struct {
 131                         u8 eth_src[ETH_ALEN];
 132                         u8 eth_dst[ETH_ALEN];
 133                         __be16 vlan_id;
 134                         u32 group_id;
 135                 } l2_rewrite;
 136                 struct {
 137                         u8 eth_src[ETH_ALEN];
 138                         u8 eth_dst[ETH_ALEN];
 139                         __be16 vlan_id;
 140                         bool ttl_check;
 141                         u32 group_id;
 142                 } l3_unicast;
 143         };
 144 };
 145
 146 struct rocker_fdb_tbl_entry {
 147         struct hlist_node entry;
 148         u32 key_crc32; /* key */
 149         bool learned;
 150         struct rocker_fdb_tbl_key {
 151                 u32 lport;
 152                 u8 addr[ETH_ALEN];
 153                 __be16 vlan_id;
 154         } key;
 155 };
 156
 157 struct rocker_internal_vlan_tbl_entry {
 158         struct hlist_node entry;
 159         int ifindex; /* key */
 160         u32 ref_count;
 161         __be16 vlan_id;
 162 };
 163
 164 struct rocker_desc_info {
 165         char *data; /* mapped */
 166         size_t data_size;
 167         size_t tlv_size;
 168         struct rocker_desc *desc;
 169         DEFINE_DMA_UNMAP_ADDR(mapaddr);
 170 };
 171
 172 struct rocker_dma_ring_info {
 173         size_t size;
 174         u32 head;
 175         u32 tail;
 176         struct rocker_desc *desc; /* mapped */
 177         dma_addr_t mapaddr;
 178         struct rocker_desc_info *desc_info;
 179         unsigned int type;
 180 };
 181
 182 struct rocker;
 183
 184 enum {
 185         ROCKER_CTRL_LINK_LOCAL_MCAST,
 186         ROCKER_CTRL_LOCAL_ARP,
 187         ROCKER_CTRL_IPV4_MCAST,
 188         ROCKER_CTRL_IPV6_MCAST,
 189         ROCKER_CTRL_DFLT_BRIDGING,
 190         ROCKER_CTRL_MAX,
 191 };
 192
 193 #define ROCKER_INTERNAL_VLAN_ID_BASE    0x0f00
 194 #define ROCKER_N_INTERNAL_VLANS         255
 195 #define ROCKER_VLAN_BITMAP_LEN          BITS_TO_LONGS(VLAN_N_VID)
 196 #define ROCKER_INTERNAL_VLAN_BITMAP_LEN BITS_TO_LONGS(ROCKER_N_INTERNAL_VLANS)
 197
 198 struct rocker_port {
 199         struct net_device *dev;
 200         struct net_device *bridge_dev;
 201         struct rocker *rocker;
 202         unsigned int port_number;
 203         u32 lport;
 204         __be16 internal_vlan_id;
 205         int stp_state;
 206         u32 brport_flags;
 207         bool ctrls[ROCKER_CTRL_MAX];
 208         unsigned long vlan_bitmap[ROCKER_VLAN_BITMAP_LEN];
 209         struct napi_struct napi_tx;
 210         struct napi_struct napi_rx;
 211         struct rocker_dma_ring_info tx_ring;
 212         struct rocker_dma_ring_info rx_ring;
 213 };
 214
 215 struct rocker {
 216         struct pci_dev *pdev;
 217         u8 __iomem *hw_addr;
 218         struct msix_entry *msix_entries;
 219         unsigned int port_count;
 220         struct rocker_port **ports;
 221         struct {
 222                 u64 id;
 223         } hw;
 224         spinlock_t cmd_ring_lock;
 225         struct rocker_dma_ring_info cmd_ring;
 226         struct rocker_dma_ring_info event_ring;
 227         DECLARE_HASHTABLE(flow_tbl, 16);
 228         spinlock_t flow_tbl_lock;
 229         u64 flow_tbl_next_cookie;
 230         DECLARE_HASHTABLE(group_tbl, 16);
 231         spinlock_t group_tbl_lock;
 232         DECLARE_HASHTABLE(fdb_tbl, 16);
 233         spinlock_t fdb_tbl_lock;
 234         unsigned long internal_vlan_bitmap[ROCKER_INTERNAL_VLAN_BITMAP_LEN];
 235         DECLARE_HASHTABLE(internal_vlan_tbl, 8);
 236         spinlock_t internal_vlan_tbl_lock;
 237 };
 238
 239 static const u8 zero_mac[ETH_ALEN]   = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
 240 static const u8 ff_mac[ETH_ALEN]     = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 241 static const u8 ll_mac[ETH_ALEN]     = { 0x01, 0x80, 0xc2, 0x00, 0x00, 0x00 };
 242 static const u8 ll_mask[ETH_ALEN]    = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xf0 };
 243 static const u8 mcast_mac[ETH_ALEN]  = { 0x01, 0x00, 0x00, 0x00, 0x00, 0x00 };
 244 static const u8 ipv4_mcast[ETH_ALEN] = { 0x01, 0x00, 0x5e, 0x00, 0x00, 0x00 };
 245 static const u8 ipv4_mask[ETH_ALEN]  = { 0xff, 0xff, 0xff, 0x80, 0x00, 0x00 };
 246 static const u8 ipv6_mcast[ETH_ALEN] = { 0x33, 0x33, 0x00, 0x00, 0x00, 0x00 };
 247 static const u8 ipv6_mask[ETH_ALEN]  = { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 };
 248
 249 /* Rocker priority levels for flow table entries.  Higher
 250  * priority match takes precedence over lower priority match.
 251  */
 252
 253 enum {
 254         ROCKER_PRIORITY_UNKNOWN = 0,
 255         ROCKER_PRIORITY_IG_PORT = 1,
 256         ROCKER_PRIORITY_VLAN = 1,
 257         ROCKER_PRIORITY_TERM_MAC_UCAST = 0,
 258         ROCKER_PRIORITY_TERM_MAC_MCAST = 1,
 259         ROCKER_PRIORITY_UNICAST_ROUTING = 1,
 260         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT = 1,
 261         ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD = 2,
 262         ROCKER_PRIORITY_BRIDGING_VLAN = 3,
 263         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT = 1,
 264         ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD = 2,
 265         ROCKER_PRIORITY_BRIDGING_TENANT = 3,
 266         ROCKER_PRIORITY_ACL_CTRL = 3,
 267         ROCKER_PRIORITY_ACL_NORMAL = 2,
 268         ROCKER_PRIORITY_ACL_DFLT = 1,
 269 };
 270
 271 static bool rocker_vlan_id_is_internal(__be16 vlan_id)
 272 {
 273         u16 start = ROCKER_INTERNAL_VLAN_ID_BASE;
 274         u16 end = 0xffe;
 275         u16 _vlan_id = ntohs(vlan_id);
 276
 277         return (_vlan_id >= start && _vlan_id <= end);
 278 }
 279
 280 static __be16 rocker_port_vid_to_vlan(struct rocker_port *rocker_port,
 281                                       u16 vid, bool *pop_vlan)
 282 {
 283         __be16 vlan_id;
 284
 285         if (pop_vlan)
 286                 *pop_vlan = false;
 287         vlan_id = htons(vid);
 288         if (!vlan_id) {
 289                 vlan_id = rocker_port->internal_vlan_id;
 290                 if (pop_vlan)
 291                         *pop_vlan = true;
 292         }
 293
 294         return vlan_id;
 295 }
 296
 297 static u16 rocker_port_vlan_to_vid(struct rocker_port *rocker_port,
 298                                    __be16 vlan_id)
 299 {
 300         if (rocker_vlan_id_is_internal(vlan_id))
 301                 return 0;
 302
 303         return ntohs(vlan_id);
 304 }
 305
 306 static bool rocker_port_is_bridged(struct rocker_port *rocker_port)
 307 {
 308         return !!rocker_port->bridge_dev;
 309 }
 310
 311 struct rocker_wait {
 312         wait_queue_head_t wait;
 313         bool done;
 314         bool nowait;
 315 };
 316
 317 static void rocker_wait_reset(struct rocker_wait *wait)
 318 {
 319         wait->done = false;
 320         wait->nowait = false;
 321 }
 322
 323 static void rocker_wait_init(struct rocker_wait *wait)
 324 {
 325         init_waitqueue_head(&wait->wait);
 326         rocker_wait_reset(wait);
 327 }
 328
 329 static struct rocker_wait *rocker_wait_create(gfp_t gfp)
 330 {
 331         struct rocker_wait *wait;
 332
 333         wait = kmalloc(sizeof(*wait), gfp);
 334         if (!wait)
 335                 return NULL;
 336         rocker_wait_init(wait);
 337         return wait;
 338 }
 339
 340 static void rocker_wait_destroy(struct rocker_wait *work)
 341 {
 342         kfree(work);
 343 }
 344
 345 static bool rocker_wait_event_timeout(struct rocker_wait *wait,
 346                                       unsigned long timeout)
 347 {
 348         wait_event_timeout(wait->wait, wait->done, HZ / 10);
 349         if (!wait->done)
 350                 return false;
 351         return true;
 352 }
 353
 354 static void rocker_wait_wake_up(struct rocker_wait *wait)
 355 {
 356         wait->done = true;
 357         wake_up(&wait->wait);
 358 }
 359
 360 static u32 rocker_msix_vector(struct rocker *rocker, unsigned int vector)
 361 {
 362         return rocker->msix_entries[vector].vector;
 363 }
 364
 365 static u32 rocker_msix_tx_vector(struct rocker_port *rocker_port)
 366 {
 367         return rocker_msix_vector(rocker_port->rocker,
 368                                   ROCKER_MSIX_VEC_TX(rocker_port->port_number));
 369 }
 370
 371 static u32 rocker_msix_rx_vector(struct rocker_port *rocker_port)
 372 {
 373         return rocker_msix_vector(rocker_port->rocker,
 374                                   ROCKER_MSIX_VEC_RX(rocker_port->port_number));
 375 }
 376
 377 #define rocker_write32(rocker, reg, val)        \
 378         writel((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 379 #define rocker_read32(rocker, reg)      \
 380         readl((rocker)->hw_addr + (ROCKER_ ## reg))
 381 #define rocker_write64(rocker, reg, val)        \
 382         writeq((val), (rocker)->hw_addr + (ROCKER_ ## reg))
 383 #define rocker_read64(rocker, reg)      \
 384         readq((rocker)->hw_addr + (ROCKER_ ## reg))
 385
 386 /*****************************
 387  * HW basic testing functions
 388  *****************************/
 389
 390 static int rocker_reg_test(struct rocker *rocker)
 391 {
 392         struct pci_dev *pdev = rocker->pdev;
 393         u64 test_reg;
 394         u64 rnd;
 395
 396         rnd = prandom_u32();
 397         rnd >>= 1;
 398         rocker_write32(rocker, TEST_REG, rnd);
 399         test_reg = rocker_read32(rocker, TEST_REG);
 400         if (test_reg != rnd * 2) {
 401                 dev_err(&pdev->dev, "unexpected 32bit register value %08llx, expected %08llx\n",
 402                         test_reg, rnd * 2);
 403                 return -EIO;
 404         }
 405
 406         rnd = prandom_u32();
 407         rnd <<= 31;
 408         rnd |= prandom_u32();
 409         rocker_write64(rocker, TEST_REG64, rnd);
 410         test_reg = rocker_read64(rocker, TEST_REG64);
 411         if (test_reg != rnd * 2) {
 412                 dev_err(&pdev->dev, "unexpected 64bit register value %16llx, expected %16llx\n",
 413                         test_reg, rnd * 2);
 414                 return -EIO;
 415         }
 416
 417         return 0;
 418 }
 419
 420 static int rocker_dma_test_one(struct rocker *rocker, struct rocker_wait *wait,
 421                                u32 test_type, dma_addr_t dma_handle,
 422                                unsigned char *buf, unsigned char *expect,
 423                                size_t size)
 424 {
 425         struct pci_dev *pdev = rocker->pdev;
 426         int i;
 427
 428         rocker_wait_reset(wait);
 429         rocker_write32(rocker, TEST_DMA_CTRL, test_type);
 430
 431         if (!rocker_wait_event_timeout(wait, HZ / 10)) {
 432                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 433                 return -EIO;
 434         }
 435
 436         for (i = 0; i < size; i++) {
 437                 if (buf[i] != expect[i]) {
 438                         dev_err(&pdev->dev, "unexpected memory content %02x at byte %x\n, %02x expected",
 439                                 buf[i], i, expect[i]);
 440                         return -EIO;
 441                 }
 442         }
 443         return 0;
 444 }
 445
 446 #define ROCKER_TEST_DMA_BUF_SIZE (PAGE_SIZE * 4)
 447 #define ROCKER_TEST_DMA_FILL_PATTERN 0x96
 448
 449 static int rocker_dma_test_offset(struct rocker *rocker,
 450                                   struct rocker_wait *wait, int offset)
 451 {
 452         struct pci_dev *pdev = rocker->pdev;
 453         unsigned char *alloc;
 454         unsigned char *buf;
 455         unsigned char *expect;
 456         dma_addr_t dma_handle;
 457         int i;
 458         int err;
 459
 460         alloc = kzalloc(ROCKER_TEST_DMA_BUF_SIZE * 2 + offset,
 461                         GFP_KERNEL | GFP_DMA);
 462         if (!alloc)
 463                 return -ENOMEM;
 464         buf = alloc + offset;
 465         expect = buf + ROCKER_TEST_DMA_BUF_SIZE;
 466
 467         dma_handle = pci_map_single(pdev, buf, ROCKER_TEST_DMA_BUF_SIZE,
 468                                     PCI_DMA_BIDIRECTIONAL);
 469         if (pci_dma_mapping_error(pdev, dma_handle)) {
 470                 err = -EIO;
 471                 goto free_alloc;
 472         }
 473
 474         rocker_write64(rocker, TEST_DMA_ADDR, dma_handle);
 475         rocker_write32(rocker, TEST_DMA_SIZE, ROCKER_TEST_DMA_BUF_SIZE);
 476
 477         memset(expect, ROCKER_TEST_DMA_FILL_PATTERN, ROCKER_TEST_DMA_BUF_SIZE);
 478         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_FILL,
 479                                   dma_handle, buf, expect,
 480                                   ROCKER_TEST_DMA_BUF_SIZE);
 481         if (err)
 482                 goto unmap;
 483
 484         memset(expect, 0, ROCKER_TEST_DMA_BUF_SIZE);
 485         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_CLEAR,
 486                                   dma_handle, buf, expect,
 487                                   ROCKER_TEST_DMA_BUF_SIZE);
 488         if (err)
 489                 goto unmap;
 490
 491         prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
 492         for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
 493                 expect[i] = ~buf[i];
 494         err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
 495                                   dma_handle, buf, expect,
 496                                   ROCKER_TEST_DMA_BUF_SIZE);
 497         if (err)
 498                 goto unmap;
 499
 500 unmap:
 501         pci_unmap_single(pdev, dma_handle, ROCKER_TEST_DMA_BUF_SIZE,
 502                          PCI_DMA_BIDIRECTIONAL);
 503 free_alloc:
 504         kfree(alloc);
 505
 506         return err;
 507 }
 508
 509 static int rocker_dma_test(struct rocker *rocker, struct rocker_wait *wait)
 510 {
 511         int i;
 512         int err;
 513
 514         for (i = 0; i < 8; i++) {
 515                 err = rocker_dma_test_offset(rocker, wait, i);
 516                 if (err)
 517                         return err;
 518         }
 519         return 0;
 520 }
 521
 522 static irqreturn_t rocker_test_irq_handler(int irq, void *dev_id)
 523 {
 524         struct rocker_wait *wait = dev_id;
 525
 526         rocker_wait_wake_up(wait);
 527
 528         return IRQ_HANDLED;
 529 }
 530
 531 static int rocker_basic_hw_test(struct rocker *rocker)
 532 {
 533         struct pci_dev *pdev = rocker->pdev;
 534         struct rocker_wait wait;
 535         int err;
 536
 537         err = rocker_reg_test(rocker);
 538         if (err) {
 539                 dev_err(&pdev->dev, "reg test failed\n");
 540                 return err;
 541         }
 542
 543         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST),
 544                           rocker_test_irq_handler, 0,
 545                           rocker_driver_name, &wait);
 546         if (err) {
 547                 dev_err(&pdev->dev, "cannot assign test irq\n");
 548                 return err;
 549         }
 550
 551         rocker_wait_init(&wait);
 552         rocker_write32(rocker, TEST_IRQ, ROCKER_MSIX_VEC_TEST);
 553
 554         if (!rocker_wait_event_timeout(&wait, HZ / 10)) {
 555                 dev_err(&pdev->dev, "no interrupt received within a timeout\n");
 556                 err = -EIO;
 557                 goto free_irq;
 558         }
 559
 560         err = rocker_dma_test(rocker, &wait);
 561         if (err)
 562                 dev_err(&pdev->dev, "dma test failed\n");
 563
 564 free_irq:
 565         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_TEST), &wait);
 566         return err;
 567 }
 568
 569 /******
 570  * TLV
 571  ******/
 572
 573 #define ROCKER_TLV_ALIGNTO 8U
 574 #define ROCKER_TLV_ALIGN(len) \
 575         (((len) + ROCKER_TLV_ALIGNTO - 1) & ~(ROCKER_TLV_ALIGNTO - 1))
 576 #define ROCKER_TLV_HDRLEN ROCKER_TLV_ALIGN(sizeof(struct rocker_tlv))
 577
 578 /*  <------- ROCKER_TLV_HDRLEN -------> <--- ROCKER_TLV_ALIGN(payload) --->
 579  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 580  * |             Header          | Pad |           Payload           | Pad |
 581  * |      (struct rocker_tlv)    | ing |                             | ing |
 582  * +-----------------------------+- - -+- - - - - - - - - - - - - - -+- - -+
 583  *  <--------------------------- tlv->len -------------------------->
 584  */
 585
 586 static struct rocker_tlv *rocker_tlv_next(const struct rocker_tlv *tlv,
 587                                           int *remaining)
 588 {
 589         int totlen = ROCKER_TLV_ALIGN(tlv->len);
 590
 591         *remaining -= totlen;
 592         return (struct rocker_tlv *) ((char *) tlv + totlen);
 593 }
 594
 595 static int rocker_tlv_ok(const struct rocker_tlv *tlv, int remaining)
 596 {
 597         return remaining >= (int) ROCKER_TLV_HDRLEN &&
 598                tlv->len >= ROCKER_TLV_HDRLEN &&
 599                tlv->len <= remaining;
 600 }
 601
 602 #define rocker_tlv_for_each(pos, head, len, rem)        \
 603         for (pos = head, rem = len;                     \
 604              rocker_tlv_ok(pos, rem);                   \
 605              pos = rocker_tlv_next(pos, &(rem)))
 606
 607 #define rocker_tlv_for_each_nested(pos, tlv, rem)       \
 608         rocker_tlv_for_each(pos, rocker_tlv_data(tlv),  \
 609                             rocker_tlv_len(tlv), rem)
 610
 611 static int rocker_tlv_attr_size(int payload)
 612 {
 613         return ROCKER_TLV_HDRLEN + payload;
 614 }
 615
 616 static int rocker_tlv_total_size(int payload)
 617 {
 618         return ROCKER_TLV_ALIGN(rocker_tlv_attr_size(payload));
 619 }
 620
 621 static int rocker_tlv_padlen(int payload)
 622 {
 623         return rocker_tlv_total_size(payload) - rocker_tlv_attr_size(payload);
 624 }
 625
 626 static int rocker_tlv_type(const struct rocker_tlv *tlv)
 627 {
 628         return tlv->type;
 629 }
 630
 631 static void *rocker_tlv_data(const struct rocker_tlv *tlv)
 632 {
 633         return (char *) tlv + ROCKER_TLV_HDRLEN;
 634 }
 635
 636 static int rocker_tlv_len(const struct rocker_tlv *tlv)
 637 {
 638         return tlv->len - ROCKER_TLV_HDRLEN;
 639 }
 640
 641 static u8 rocker_tlv_get_u8(const struct rocker_tlv *tlv)
 642 {
 643         return *(u8 *) rocker_tlv_data(tlv);
 644 }
 645
 646 static u16 rocker_tlv_get_u16(const struct rocker_tlv *tlv)
 647 {
 648         return *(u16 *) rocker_tlv_data(tlv);
 649 }
 650
 651 static __be16 rocker_tlv_get_be16(const struct rocker_tlv *tlv)
 652 {
 653         return *(__be16 *) rocker_tlv_data(tlv);
 654 }
 655
 656 static u32 rocker_tlv_get_u32(const struct rocker_tlv *tlv)
 657 {
 658         return *(u32 *) rocker_tlv_data(tlv);
 659 }
 660
 661 static u64 rocker_tlv_get_u64(const struct rocker_tlv *tlv)
 662 {
 663         return *(u64 *) rocker_tlv_data(tlv);
 664 }
 665
 666 static void rocker_tlv_parse(struct rocker_tlv **tb, int maxtype,
 667                              const char *buf, int buf_len)
 668 {
 669         const struct rocker_tlv *tlv;
 670         const struct rocker_tlv *head = (const struct rocker_tlv *) buf;
 671         int rem;
 672
 673         memset(tb, 0, sizeof(struct rocker_tlv *) * (maxtype + 1));
 674
 675         rocker_tlv_for_each(tlv, head, buf_len, rem) {
 676                 u32 type = rocker_tlv_type(tlv);
 677
 678                 if (type > 0 && type <= maxtype)
 679                         tb[type] = (struct rocker_tlv *) tlv;
 680         }
 681 }
 682
 683 static void rocker_tlv_parse_nested(struct rocker_tlv **tb, int maxtype,
 684                                     const struct rocker_tlv *tlv)
 685 {
 686         rocker_tlv_parse(tb, maxtype, rocker_tlv_data(tlv),
 687                          rocker_tlv_len(tlv));
 688 }
 689
 690 static void rocker_tlv_parse_desc(struct rocker_tlv **tb, int maxtype,
 691                                   struct rocker_desc_info *desc_info)
 692 {
 693         rocker_tlv_parse(tb, maxtype, desc_info->data,
 694                          desc_info->desc->tlv_size);
 695 }
 696
 697 static struct rocker_tlv *rocker_tlv_start(struct rocker_desc_info *desc_info)
 698 {
 699         return (struct rocker_tlv *) ((char *) desc_info->data +
 700                                                desc_info->tlv_size);
 701 }
 702
 703 static int rocker_tlv_put(struct rocker_desc_info *desc_info,
 704                           int attrtype, int attrlen, const void *data)
 705 {
 706         int tail_room = desc_info->data_size - desc_info->tlv_size;
 707         int total_size = rocker_tlv_total_size(attrlen);
 708         struct rocker_tlv *tlv;
 709
 710         if (unlikely(tail_room < total_size))
 711                 return -EMSGSIZE;
 712
 713         tlv = rocker_tlv_start(desc_info);
 714         desc_info->tlv_size += total_size;
 715         tlv->type = attrtype;
 716         tlv->len = rocker_tlv_attr_size(attrlen);
 717         memcpy(rocker_tlv_data(tlv), data, attrlen);
 718         memset((char *) tlv + tlv->len, 0, rocker_tlv_padlen(attrlen));
 719         return 0;
 720 }
 721
 722 static int rocker_tlv_put_u8(struct rocker_desc_info *desc_info,
 723                              int attrtype, u8 value)
 724 {
 725         return rocker_tlv_put(desc_info, attrtype, sizeof(u8), &value);
 726 }
 727
 728 static int rocker_tlv_put_u16(struct rocker_desc_info *desc_info,
 729                               int attrtype, u16 value)
 730 {
 731         return rocker_tlv_put(desc_info, attrtype, sizeof(u16), &value);
 732 }
 733
 734 static int rocker_tlv_put_be16(struct rocker_desc_info *desc_info,
 735                                int attrtype, __be16 value)
 736 {
 737         return rocker_tlv_put(desc_info, attrtype, sizeof(__be16), &value);
 738 }
 739
 740 static int rocker_tlv_put_u32(struct rocker_desc_info *desc_info,
 741                               int attrtype, u32 value)
 742 {
 743         return rocker_tlv_put(desc_info, attrtype, sizeof(u32), &value);
 744 }
 745
 746 static int rocker_tlv_put_be32(struct rocker_desc_info *desc_info,
 747                                int attrtype, __be32 value)
 748 {
 749         return rocker_tlv_put(desc_info, attrtype, sizeof(__be32), &value);
 750 }
 751
 752 static int rocker_tlv_put_u64(struct rocker_desc_info *desc_info,
 753                               int attrtype, u64 value)
 754 {
 755         return rocker_tlv_put(desc_info, attrtype, sizeof(u64), &value);
 756 }
 757
 758 static struct rocker_tlv *
 759 rocker_tlv_nest_start(struct rocker_desc_info *desc_info, int attrtype)
 760 {
 761         struct rocker_tlv *start = rocker_tlv_start(desc_info);
 762
 763         if (rocker_tlv_put(desc_info, attrtype, 0, NULL) < 0)
 764                 return NULL;
 765
 766         return start;
 767 }
 768
 769 static void rocker_tlv_nest_end(struct rocker_desc_info *desc_info,
 770                                 struct rocker_tlv *start)
 771 {
 772         start->len = (char *) rocker_tlv_start(desc_info) - (char *) start;
 773 }
 774
 775 static void rocker_tlv_nest_cancel(struct rocker_desc_info *desc_info,
 776                                    struct rocker_tlv *start)
 777 {
 778         desc_info->tlv_size = (char *) start - desc_info->data;
 779 }
 780
 781 /******************************************
 782  * DMA rings and descriptors manipulations
 783  ******************************************/
 784
 785 static u32 __pos_inc(u32 pos, size_t limit)
 786 {
 787         return ++pos == limit ? 0 : pos;
 788 }
 789
 790 static int rocker_desc_err(struct rocker_desc_info *desc_info)
 791 {
 792         return -(desc_info->desc->comp_err & ~ROCKER_DMA_DESC_COMP_ERR_GEN);
 793 }
 794
 795 static void rocker_desc_gen_clear(struct rocker_desc_info *desc_info)
 796 {
 797         desc_info->desc->comp_err &= ~ROCKER_DMA_DESC_COMP_ERR_GEN;
 798 }
 799
 800 static bool rocker_desc_gen(struct rocker_desc_info *desc_info)
 801 {
 802         u32 comp_err = desc_info->desc->comp_err;
 803
 804         return comp_err & ROCKER_DMA_DESC_COMP_ERR_GEN ? true : false;
 805 }
 806
 807 static void *rocker_desc_cookie_ptr_get(struct rocker_desc_info *desc_info)
 808 {
 809         return (void *)(uintptr_t)desc_info->desc->cookie;
 810 }
 811
 812 static void rocker_desc_cookie_ptr_set(struct rocker_desc_info *desc_info,
 813                                        void *ptr)
 814 {
 815         desc_info->desc->cookie = (uintptr_t) ptr;
 816 }
 817
 818 static struct rocker_desc_info *
 819 rocker_desc_head_get(struct rocker_dma_ring_info *info)
 820 {
 821         static struct rocker_desc_info *desc_info;
 822         u32 head = __pos_inc(info->head, info->size);
 823
 824         desc_info = &info->desc_info[info->head];
 825         if (head == info->tail)
 826                 return NULL; /* ring full */
 827         desc_info->tlv_size = 0;
 828         return desc_info;
 829 }
 830
 831 static void rocker_desc_commit(struct rocker_desc_info *desc_info)
 832 {
 833         desc_info->desc->buf_size = desc_info->data_size;
 834         desc_info->desc->tlv_size = desc_info->tlv_size;
 835 }
 836
 837 static void rocker_desc_head_set(struct rocker *rocker,
 838                                  struct rocker_dma_ring_info *info,
 839                                  struct rocker_desc_info *desc_info)
 840 {
 841         u32 head = __pos_inc(info->head, info->size);
 842
 843         BUG_ON(head == info->tail);
 844         rocker_desc_commit(desc_info);
 845         info->head = head;
 846         rocker_write32(rocker, DMA_DESC_HEAD(info->type), head);
 847 }
 848
 849 static struct rocker_desc_info *
 850 rocker_desc_tail_get(struct rocker_dma_ring_info *info)
 851 {
 852         static struct rocker_desc_info *desc_info;
 853
 854         if (info->tail == info->head)
 855                 return NULL; /* nothing to be done between head and tail */
 856         desc_info = &info->desc_info[info->tail];
 857         if (!rocker_desc_gen(desc_info))
 858                 return NULL; /* gen bit not set, desc is not ready yet */
 859         info->tail = __pos_inc(info->tail, info->size);
 860         desc_info->tlv_size = desc_info->desc->tlv_size;
 861         return desc_info;
 862 }
 863
 864 static void rocker_dma_ring_credits_set(struct rocker *rocker,
 865                                         struct rocker_dma_ring_info *info,
 866                                         u32 credits)
 867 {
 868         if (credits)
 869                 rocker_write32(rocker, DMA_DESC_CREDITS(info->type), credits);
 870 }
 871
 872 static unsigned long rocker_dma_ring_size_fix(size_t size)
 873 {
 874         return max(ROCKER_DMA_SIZE_MIN,
 875                    min(roundup_pow_of_two(size), ROCKER_DMA_SIZE_MAX));
 876 }
 877
 878 static int rocker_dma_ring_create(struct rocker *rocker,
 879                                   unsigned int type,
 880                                   size_t size,
 881                                   struct rocker_dma_ring_info *info)
 882 {
 883         int i;
 884
 885         BUG_ON(size != rocker_dma_ring_size_fix(size));
 886         info->size = size;
 887         info->type = type;
 888         info->head = 0;
 889         info->tail = 0;
 890         info->desc_info = kcalloc(info->size, sizeof(*info->desc_info),
 891                                   GFP_KERNEL);
 892         if (!info->desc_info)
 893                 return -ENOMEM;
 894
 895         info->desc = pci_alloc_consistent(rocker->pdev,
 896                                           info->size * sizeof(*info->desc),
 897                                           &info->mapaddr);
 898         if (!info->desc) {
 899                 kfree(info->desc_info);
 900                 return -ENOMEM;
 901         }
 902
 903         for (i = 0; i < info->size; i++)
 904                 info->desc_info[i].desc = &info->desc[i];
 905
 906         rocker_write32(rocker, DMA_DESC_CTRL(info->type),
 907                        ROCKER_DMA_DESC_CTRL_RESET);
 908         rocker_write64(rocker, DMA_DESC_ADDR(info->type), info->mapaddr);
 909         rocker_write32(rocker, DMA_DESC_SIZE(info->type), info->size);
 910
 911         return 0;
 912 }
 913
 914 static void rocker_dma_ring_destroy(struct rocker *rocker,
 915                                     struct rocker_dma_ring_info *info)
 916 {
 917         rocker_write64(rocker, DMA_DESC_ADDR(info->type), 0);
 918
 919         pci_free_consistent(rocker->pdev,
 920                             info->size * sizeof(struct rocker_desc),
 921                             info->desc, info->mapaddr);
 922         kfree(info->desc_info);
 923 }
 924
 925 static void rocker_dma_ring_pass_to_producer(struct rocker *rocker,
 926                                              struct rocker_dma_ring_info *info)
 927 {
 928         int i;
 929
 930         BUG_ON(info->head || info->tail);
 931
 932         /* When ring is consumer, we need to advance head for each desc.
 933          * That tells hw that the desc is ready to be used by it.
 934          */
 935         for (i = 0; i < info->size - 1; i++)
 936                 rocker_desc_head_set(rocker, info, &info->desc_info[i]);
 937         rocker_desc_commit(&info->desc_info[i]);
 938 }
 939
 940 static int rocker_dma_ring_bufs_alloc(struct rocker *rocker,
 941                                       struct rocker_dma_ring_info *info,
 942                                       int direction, size_t buf_size)
 943 {
 944         struct pci_dev *pdev = rocker->pdev;
 945         int i;
 946         int err;
 947
 948         for (i = 0; i < info->size; i++) {
 949                 struct rocker_desc_info *desc_info = &info->desc_info[i];
 950                 struct rocker_desc *desc = &info->desc[i];
 951                 dma_addr_t dma_handle;
 952                 char *buf;
 953
 954                 buf = kzalloc(buf_size, GFP_KERNEL | GFP_DMA);
 955                 if (!buf) {
 956                         err = -ENOMEM;
 957                         goto rollback;
 958                 }
 959
 960                 dma_handle = pci_map_single(pdev, buf, buf_size, direction);
 961                 if (pci_dma_mapping_error(pdev, dma_handle)) {
 962                         kfree(buf);
 963                         err = -EIO;
 964                         goto rollback;
 965                 }
 966
 967                 desc_info->data = buf;
 968                 desc_info->data_size = buf_size;
 969                 dma_unmap_addr_set(desc_info, mapaddr, dma_handle);
 970
 971                 desc->buf_addr = dma_handle;
 972                 desc->buf_size = buf_size;
 973         }
 974         return 0;
 975
 976 rollback:
 977         for (i--; i >= 0; i--) {
 978                 struct rocker_desc_info *desc_info = &info->desc_info[i];
 979
 980                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
 981                                  desc_info->data_size, direction);
 982                 kfree(desc_info->data);
 983         }
 984         return err;
 985 }
 986
 987 static void rocker_dma_ring_bufs_free(struct rocker *rocker,
 988                                       struct rocker_dma_ring_info *info,
 989                                       int direction)
 990 {
 991         struct pci_dev *pdev = rocker->pdev;
 992         int i;
 993
 994         for (i = 0; i < info->size; i++) {
 995                 struct rocker_desc_info *desc_info = &info->desc_info[i];
 996                 struct rocker_desc *desc = &info->desc[i];
 997
 998                 desc->buf_addr = 0;
 999                 desc->buf_size = 0;
1000                 pci_unmap_single(pdev, dma_unmap_addr(desc_info, mapaddr),
1001                                  desc_info->data_size, direction);
1002                 kfree(desc_info->data);
1003         }
1004 }
1005
1006 static int rocker_dma_rings_init(struct rocker *rocker)
1007 {
1008         struct pci_dev *pdev = rocker->pdev;
1009         int err;
1010
1011         err = rocker_dma_ring_create(rocker, ROCKER_DMA_CMD,
1012                                      ROCKER_DMA_CMD_DEFAULT_SIZE,
1013                                      &rocker->cmd_ring);
1014         if (err) {
1015                 dev_err(&pdev->dev, "failed to create command dma ring\n");
1016                 return err;
1017         }
1018
1019         spin_lock_init(&rocker->cmd_ring_lock);
1020
1021         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->cmd_ring,
1022                                          PCI_DMA_BIDIRECTIONAL, PAGE_SIZE);
1023         if (err) {
1024                 dev_err(&pdev->dev, "failed to alloc command dma ring buffers\n");
1025                 goto err_dma_cmd_ring_bufs_alloc;
1026         }
1027
1028         err = rocker_dma_ring_create(rocker, ROCKER_DMA_EVENT,
1029                                      ROCKER_DMA_EVENT_DEFAULT_SIZE,
1030                                      &rocker->event_ring);
1031         if (err) {
1032                 dev_err(&pdev->dev, "failed to create event dma ring\n");
1033                 goto err_dma_event_ring_create;
1034         }
1035
1036         err = rocker_dma_ring_bufs_alloc(rocker, &rocker->event_ring,
1037                                          PCI_DMA_FROMDEVICE, PAGE_SIZE);
1038         if (err) {
1039                 dev_err(&pdev->dev, "failed to alloc event dma ring buffers\n");
1040                 goto err_dma_event_ring_bufs_alloc;
1041         }
1042         rocker_dma_ring_pass_to_producer(rocker, &rocker->event_ring);
1043         return 0;
1044
1045 err_dma_event_ring_bufs_alloc:
1046         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1047 err_dma_event_ring_create:
1048         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1049                                   PCI_DMA_BIDIRECTIONAL);
1050 err_dma_cmd_ring_bufs_alloc:
1051         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1052         return err;
1053 }
1054
1055 static void rocker_dma_rings_fini(struct rocker *rocker)
1056 {
1057         rocker_dma_ring_bufs_free(rocker, &rocker->event_ring,
1058                                   PCI_DMA_BIDIRECTIONAL);
1059         rocker_dma_ring_destroy(rocker, &rocker->event_ring);
1060         rocker_dma_ring_bufs_free(rocker, &rocker->cmd_ring,
1061                                   PCI_DMA_BIDIRECTIONAL);
1062         rocker_dma_ring_destroy(rocker, &rocker->cmd_ring);
1063 }
1064
1065 static int rocker_dma_rx_ring_skb_map(struct rocker *rocker,
1066                                       struct rocker_port *rocker_port,
1067                                       struct rocker_desc_info *desc_info,
1068                                       struct sk_buff *skb, size_t buf_len)
1069 {
1070         struct pci_dev *pdev = rocker->pdev;
1071         dma_addr_t dma_handle;
1072
1073         dma_handle = pci_map_single(pdev, skb->data, buf_len,
1074                                     PCI_DMA_FROMDEVICE);
1075         if (pci_dma_mapping_error(pdev, dma_handle))
1076                 return -EIO;
1077         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_RX_FRAG_ADDR, dma_handle))
1078                 goto tlv_put_failure;
1079         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_RX_FRAG_MAX_LEN, buf_len))
1080                 goto tlv_put_failure;
1081         return 0;
1082
1083 tlv_put_failure:
1084         pci_unmap_single(pdev, dma_handle, buf_len, PCI_DMA_FROMDEVICE);
1085         desc_info->tlv_size = 0;
1086         return -EMSGSIZE;
1087 }
1088
1089 static size_t rocker_port_rx_buf_len(struct rocker_port *rocker_port)
1090 {
1091         return rocker_port->dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1092 }
1093
1094 static int rocker_dma_rx_ring_skb_alloc(struct rocker *rocker,
1095                                         struct rocker_port *rocker_port,
1096                                         struct rocker_desc_info *desc_info)
1097 {
1098         struct net_device *dev = rocker_port->dev;
1099         struct sk_buff *skb;
1100         size_t buf_len = rocker_port_rx_buf_len(rocker_port);
1101         int err;
1102
1103         /* Ensure that hw will see tlv_size zero in case of an error.
1104          * That tells hw to use another descriptor.
1105          */
1106         rocker_desc_cookie_ptr_set(desc_info, NULL);
1107         desc_info->tlv_size = 0;
1108
1109         skb = netdev_alloc_skb_ip_align(dev, buf_len);
1110         if (!skb)
1111                 return -ENOMEM;
1112         err = rocker_dma_rx_ring_skb_map(rocker, rocker_port, desc_info,
1113                                          skb, buf_len);
1114         if (err) {
1115                 dev_kfree_skb_any(skb);
1116                 return err;
1117         }
1118         rocker_desc_cookie_ptr_set(desc_info, skb);
1119         return 0;
1120 }
1121
1122 static void rocker_dma_rx_ring_skb_unmap(struct rocker *rocker,
1123                                          struct rocker_tlv **attrs)
1124 {
1125         struct pci_dev *pdev = rocker->pdev;
1126         dma_addr_t dma_handle;
1127         size_t len;
1128
1129         if (!attrs[ROCKER_TLV_RX_FRAG_ADDR] ||
1130             !attrs[ROCKER_TLV_RX_FRAG_MAX_LEN])
1131                 return;
1132         dma_handle = rocker_tlv_get_u64(attrs[ROCKER_TLV_RX_FRAG_ADDR]);
1133         len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_MAX_LEN]);
1134         pci_unmap_single(pdev, dma_handle, len, PCI_DMA_FROMDEVICE);
1135 }
1136
1137 static void rocker_dma_rx_ring_skb_free(struct rocker *rocker,
1138                                         struct rocker_desc_info *desc_info)
1139 {
1140         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
1141         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
1142
1143         if (!skb)
1144                 return;
1145         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
1146         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
1147         dev_kfree_skb_any(skb);
1148 }
1149
1150 static int rocker_dma_rx_ring_skbs_alloc(struct rocker *rocker,
1151                                          struct rocker_port *rocker_port)
1152 {
1153         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1154         int i;
1155         int err;
1156
1157         for (i = 0; i < rx_ring->size; i++) {
1158                 err = rocker_dma_rx_ring_skb_alloc(rocker, rocker_port,
1159                                                    &rx_ring->desc_info[i]);
1160                 if (err)
1161                         goto rollback;
1162         }
1163         return 0;
1164
1165 rollback:
1166         for (i--; i >= 0; i--)
1167                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1168         return err;
1169 }
1170
1171 static void rocker_dma_rx_ring_skbs_free(struct rocker *rocker,
1172                                          struct rocker_port *rocker_port)
1173 {
1174         struct rocker_dma_ring_info *rx_ring = &rocker_port->rx_ring;
1175         int i;
1176
1177         for (i = 0; i < rx_ring->size; i++)
1178                 rocker_dma_rx_ring_skb_free(rocker, &rx_ring->desc_info[i]);
1179 }
1180
1181 static int rocker_port_dma_rings_init(struct rocker_port *rocker_port)
1182 {
1183         struct rocker *rocker = rocker_port->rocker;
1184         int err;
1185
1186         err = rocker_dma_ring_create(rocker,
1187                                      ROCKER_DMA_TX(rocker_port->port_number),
1188                                      ROCKER_DMA_TX_DEFAULT_SIZE,
1189                                      &rocker_port->tx_ring);
1190         if (err) {
1191                 netdev_err(rocker_port->dev, "failed to create tx dma ring\n");
1192                 return err;
1193         }
1194
1195         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->tx_ring,
1196                                          PCI_DMA_TODEVICE,
1197                                          ROCKER_DMA_TX_DESC_SIZE);
1198         if (err) {
1199                 netdev_err(rocker_port->dev, "failed to alloc tx dma ring buffers\n");
1200                 goto err_dma_tx_ring_bufs_alloc;
1201         }
1202
1203         err = rocker_dma_ring_create(rocker,
1204                                      ROCKER_DMA_RX(rocker_port->port_number),
1205                                      ROCKER_DMA_RX_DEFAULT_SIZE,
1206                                      &rocker_port->rx_ring);
1207         if (err) {
1208                 netdev_err(rocker_port->dev, "failed to create rx dma ring\n");
1209                 goto err_dma_rx_ring_create;
1210         }
1211
1212         err = rocker_dma_ring_bufs_alloc(rocker, &rocker_port->rx_ring,
1213                                          PCI_DMA_BIDIRECTIONAL,
1214                                          ROCKER_DMA_RX_DESC_SIZE);
1215         if (err) {
1216                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring buffers\n");
1217                 goto err_dma_rx_ring_bufs_alloc;
1218         }
1219
1220         err = rocker_dma_rx_ring_skbs_alloc(rocker, rocker_port);
1221         if (err) {
1222                 netdev_err(rocker_port->dev, "failed to alloc rx dma ring skbs\n");
1223                 goto err_dma_rx_ring_skbs_alloc;
1224         }
1225         rocker_dma_ring_pass_to_producer(rocker, &rocker_port->rx_ring);
1226
1227         return 0;
1228
1229 err_dma_rx_ring_skbs_alloc:
1230         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1231                                   PCI_DMA_BIDIRECTIONAL);
1232 err_dma_rx_ring_bufs_alloc:
1233         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1234 err_dma_rx_ring_create:
1235         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1236                                   PCI_DMA_TODEVICE);
1237 err_dma_tx_ring_bufs_alloc:
1238         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1239         return err;
1240 }
1241
1242 static void rocker_port_dma_rings_fini(struct rocker_port *rocker_port)
1243 {
1244         struct rocker *rocker = rocker_port->rocker;
1245
1246         rocker_dma_rx_ring_skbs_free(rocker, rocker_port);
1247         rocker_dma_ring_bufs_free(rocker, &rocker_port->rx_ring,
1248                                   PCI_DMA_BIDIRECTIONAL);
1249         rocker_dma_ring_destroy(rocker, &rocker_port->rx_ring);
1250         rocker_dma_ring_bufs_free(rocker, &rocker_port->tx_ring,
1251                                   PCI_DMA_TODEVICE);
1252         rocker_dma_ring_destroy(rocker, &rocker_port->tx_ring);
1253 }
1254
1255 static void rocker_port_set_enable(struct rocker_port *rocker_port, bool enable)
1256 {
1257         u64 val = rocker_read64(rocker_port->rocker, PORT_PHYS_ENABLE);
1258
1259         if (enable)
1260                 val |= 1 << rocker_port->lport;
1261         else
1262                 val &= ~(1 << rocker_port->lport);
1263         rocker_write64(rocker_port->rocker, PORT_PHYS_ENABLE, val);
1264 }
1265
1266 /********************************
1267  * Interrupt handler and helpers
1268  ********************************/
1269
1270 static irqreturn_t rocker_cmd_irq_handler(int irq, void *dev_id)
1271 {
1272         struct rocker *rocker = dev_id;
1273         struct rocker_desc_info *desc_info;
1274         struct rocker_wait *wait;
1275         u32 credits = 0;
1276
1277         spin_lock(&rocker->cmd_ring_lock);
1278         while ((desc_info = rocker_desc_tail_get(&rocker->cmd_ring))) {
1279                 wait = rocker_desc_cookie_ptr_get(desc_info);
1280                 if (wait->nowait) {
1281                         rocker_desc_gen_clear(desc_info);
1282                         rocker_wait_destroy(wait);
1283                 } else {
1284                         rocker_wait_wake_up(wait);
1285                 }
1286                 credits++;
1287         }
1288         spin_unlock(&rocker->cmd_ring_lock);
1289         rocker_dma_ring_credits_set(rocker, &rocker->cmd_ring, credits);
1290
1291         return IRQ_HANDLED;
1292 }
1293
1294 static void rocker_port_link_up(struct rocker_port *rocker_port)
1295 {
1296         netif_carrier_on(rocker_port->dev);
1297         netdev_info(rocker_port->dev, "Link is up\n");
1298 }
1299
1300 static void rocker_port_link_down(struct rocker_port *rocker_port)
1301 {
1302         netif_carrier_off(rocker_port->dev);
1303         netdev_info(rocker_port->dev, "Link is down\n");
1304 }
1305
1306 static int rocker_event_link_change(struct rocker *rocker,
1307                                     const struct rocker_tlv *info)
1308 {
1309         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_LINK_CHANGED_MAX + 1];
1310         unsigned int port_number;
1311         bool link_up;
1312         struct rocker_port *rocker_port;
1313
1314         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_LINK_CHANGED_MAX, info);
1315         if (!attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT] ||
1316             !attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP])
1317                 return -EIO;
1318         port_number =
1319                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LPORT]) - 1;
1320         link_up = rocker_tlv_get_u8(attrs[ROCKER_TLV_EVENT_LINK_CHANGED_LINKUP]);
1321
1322         if (port_number >= rocker->port_count)
1323                 return -EINVAL;
1324
1325         rocker_port = rocker->ports[port_number];
1326         if (netif_carrier_ok(rocker_port->dev) != link_up) {
1327                 if (link_up)
1328                         rocker_port_link_up(rocker_port);
1329                 else
1330                         rocker_port_link_down(rocker_port);
1331         }
1332
1333         return 0;
1334 }
1335
1336 #define ROCKER_OP_FLAG_REMOVE           BIT(0)
1337 #define ROCKER_OP_FLAG_NOWAIT           BIT(1)
1338 #define ROCKER_OP_FLAG_LEARNED          BIT(2)
1339 #define ROCKER_OP_FLAG_REFRESH          BIT(3)
1340
1341 static int rocker_port_fdb(struct rocker_port *rocker_port,
1342                            const unsigned char *addr,
1343                            __be16 vlan_id, int flags);
1344
1345 static int rocker_event_mac_vlan_seen(struct rocker *rocker,
1346                                       const struct rocker_tlv *info)
1347 {
1348         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAX + 1];
1349         unsigned int port_number;
1350         struct rocker_port *rocker_port;
1351         unsigned char *addr;
1352         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_LEARNED;
1353         __be16 vlan_id;
1354
1355         rocker_tlv_parse_nested(attrs, ROCKER_TLV_EVENT_MAC_VLAN_MAX, info);
1356         if (!attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT] ||
1357             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC] ||
1358             !attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID])
1359                 return -EIO;
1360         port_number =
1361                 rocker_tlv_get_u32(attrs[ROCKER_TLV_EVENT_MAC_VLAN_LPORT]) - 1;
1362         addr = rocker_tlv_data(attrs[ROCKER_TLV_EVENT_MAC_VLAN_MAC]);
1363         vlan_id = rocker_tlv_get_be16(attrs[ROCKER_TLV_EVENT_MAC_VLAN_VLAN_ID]);
1364
1365         if (port_number >= rocker->port_count)
1366                 return -EINVAL;
1367
1368         rocker_port = rocker->ports[port_number];
1369
1370         if (rocker_port->stp_state != BR_STATE_LEARNING &&
1371             rocker_port->stp_state != BR_STATE_FORWARDING)
1372                 return 0;
1373
1374         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
1375 }
1376
1377 static int rocker_event_process(struct rocker *rocker,
1378                                 struct rocker_desc_info *desc_info)
1379 {
1380         struct rocker_tlv *attrs[ROCKER_TLV_EVENT_MAX + 1];
1381         struct rocker_tlv *info;
1382         u16 type;
1383
1384         rocker_tlv_parse_desc(attrs, ROCKER_TLV_EVENT_MAX, desc_info);
1385         if (!attrs[ROCKER_TLV_EVENT_TYPE] ||
1386             !attrs[ROCKER_TLV_EVENT_INFO])
1387                 return -EIO;
1388
1389         type = rocker_tlv_get_u16(attrs[ROCKER_TLV_EVENT_TYPE]);
1390         info = attrs[ROCKER_TLV_EVENT_INFO];
1391
1392         switch (type) {
1393         case ROCKER_TLV_EVENT_TYPE_LINK_CHANGED:
1394                 return rocker_event_link_change(rocker, info);
1395         case ROCKER_TLV_EVENT_TYPE_MAC_VLAN_SEEN:
1396                 return rocker_event_mac_vlan_seen(rocker, info);
1397         }
1398
1399         return -EOPNOTSUPP;
1400 }
1401
1402 static irqreturn_t rocker_event_irq_handler(int irq, void *dev_id)
1403 {
1404         struct rocker *rocker = dev_id;
1405         struct pci_dev *pdev = rocker->pdev;
1406         struct rocker_desc_info *desc_info;
1407         u32 credits = 0;
1408         int err;
1409
1410         while ((desc_info = rocker_desc_tail_get(&rocker->event_ring))) {
1411                 err = rocker_desc_err(desc_info);
1412                 if (err) {
1413                         dev_err(&pdev->dev, "event desc received with err %d\n",
1414                                 err);
1415                 } else {
1416                         err = rocker_event_process(rocker, desc_info);
1417                         if (err)
1418                                 dev_err(&pdev->dev, "event processing failed with err %d\n",
1419                                         err);
1420                 }
1421                 rocker_desc_gen_clear(desc_info);
1422                 rocker_desc_head_set(rocker, &rocker->event_ring, desc_info);
1423                 credits++;
1424         }
1425         rocker_dma_ring_credits_set(rocker, &rocker->event_ring, credits);
1426
1427         return IRQ_HANDLED;
1428 }
1429
1430 static irqreturn_t rocker_tx_irq_handler(int irq, void *dev_id)
1431 {
1432         struct rocker_port *rocker_port = dev_id;
1433
1434         napi_schedule(&rocker_port->napi_tx);
1435         return IRQ_HANDLED;
1436 }
1437
1438 static irqreturn_t rocker_rx_irq_handler(int irq, void *dev_id)
1439 {
1440         struct rocker_port *rocker_port = dev_id;
1441
1442         napi_schedule(&rocker_port->napi_rx);
1443         return IRQ_HANDLED;
1444 }
1445
1446 /********************
1447  * Command interface
1448  ********************/
1449
1450 typedef int (*rocker_cmd_cb_t)(struct rocker *rocker,
1451                                struct rocker_port *rocker_port,
1452                                struct rocker_desc_info *desc_info,
1453                                void *priv);
1454
1455 static int rocker_cmd_exec(struct rocker *rocker,
1456                            struct rocker_port *rocker_port,
1457                            rocker_cmd_cb_t prepare, void *prepare_priv,
1458                            rocker_cmd_cb_t process, void *process_priv,
1459                            bool nowait)
1460 {
1461         struct rocker_desc_info *desc_info;
1462         struct rocker_wait *wait;
1463         unsigned long flags;
1464         int err;
1465
1466         wait = rocker_wait_create(nowait ? GFP_ATOMIC : GFP_KERNEL);
1467         if (!wait)
1468                 return -ENOMEM;
1469         wait->nowait = nowait;
1470
1471         spin_lock_irqsave(&rocker->cmd_ring_lock, flags);
1472         desc_info = rocker_desc_head_get(&rocker->cmd_ring);
1473         if (!desc_info) {
1474                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1475                 err = -EAGAIN;
1476                 goto out;
1477         }
1478         err = prepare(rocker, rocker_port, desc_info, prepare_priv);
1479         if (err) {
1480                 spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1481                 goto out;
1482         }
1483         rocker_desc_cookie_ptr_set(desc_info, wait);
1484         rocker_desc_head_set(rocker, &rocker->cmd_ring, desc_info);
1485         spin_unlock_irqrestore(&rocker->cmd_ring_lock, flags);
1486
1487         if (nowait)
1488                 return 0;
1489
1490         if (!rocker_wait_event_timeout(wait, HZ / 10))
1491                 return -EIO;
1492
1493         err = rocker_desc_err(desc_info);
1494         if (err)
1495                 return err;
1496
1497         if (process)
1498                 err = process(rocker, rocker_port, desc_info, process_priv);
1499
1500         rocker_desc_gen_clear(desc_info);
1501 out:
1502         rocker_wait_destroy(wait);
1503         return err;
1504 }
1505
1506 static int
1507 rocker_cmd_get_port_settings_prep(struct rocker *rocker,
1508                                   struct rocker_port *rocker_port,
1509                                   struct rocker_desc_info *desc_info,
1510                                   void *priv)
1511 {
1512         struct rocker_tlv *cmd_info;
1513
1514         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1515                                ROCKER_TLV_CMD_TYPE_GET_PORT_SETTINGS))
1516                 return -EMSGSIZE;
1517         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1518         if (!cmd_info)
1519                 return -EMSGSIZE;
1520         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1521                                rocker_port->lport))
1522                 return -EMSGSIZE;
1523         rocker_tlv_nest_end(desc_info, cmd_info);
1524         return 0;
1525 }
1526
1527 static int
1528 rocker_cmd_get_port_settings_ethtool_proc(struct rocker *rocker,
1529                                           struct rocker_port *rocker_port,
1530                                           struct rocker_desc_info *desc_info,
1531                                           void *priv)
1532 {
1533         struct ethtool_cmd *ecmd = priv;
1534         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1535         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1536         u32 speed;
1537         u8 duplex;
1538         u8 autoneg;
1539
1540         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1541         if (!attrs[ROCKER_TLV_CMD_INFO])
1542                 return -EIO;
1543
1544         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1545                                 attrs[ROCKER_TLV_CMD_INFO]);
1546         if (!info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED] ||
1547             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX] ||
1548             !info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG])
1549                 return -EIO;
1550
1551         speed = rocker_tlv_get_u32(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_SPEED]);
1552         duplex = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX]);
1553         autoneg = rocker_tlv_get_u8(info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG]);
1554
1555         ecmd->transceiver = XCVR_INTERNAL;
1556         ecmd->supported = SUPPORTED_TP;
1557         ecmd->phy_address = 0xff;
1558         ecmd->port = PORT_TP;
1559         ethtool_cmd_speed_set(ecmd, speed);
1560         ecmd->duplex = duplex ? DUPLEX_FULL : DUPLEX_HALF;
1561         ecmd->autoneg = autoneg ? AUTONEG_ENABLE : AUTONEG_DISABLE;
1562
1563         return 0;
1564 }
1565
1566 static int
1567 rocker_cmd_get_port_settings_macaddr_proc(struct rocker *rocker,
1568                                           struct rocker_port *rocker_port,
1569                                           struct rocker_desc_info *desc_info,
1570                                           void *priv)
1571 {
1572         unsigned char *macaddr = priv;
1573         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
1574         struct rocker_tlv *info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MAX + 1];
1575         struct rocker_tlv *attr;
1576
1577         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
1578         if (!attrs[ROCKER_TLV_CMD_INFO])
1579                 return -EIO;
1580
1581         rocker_tlv_parse_nested(info_attrs, ROCKER_TLV_CMD_PORT_SETTINGS_MAX,
1582                                 attrs[ROCKER_TLV_CMD_INFO]);
1583         attr = info_attrs[ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR];
1584         if (!attr)
1585                 return -EIO;
1586
1587         if (rocker_tlv_len(attr) != ETH_ALEN)
1588                 return -EINVAL;
1589
1590         ether_addr_copy(macaddr, rocker_tlv_data(attr));
1591         return 0;
1592 }
1593
1594 static int
1595 rocker_cmd_set_port_settings_ethtool_prep(struct rocker *rocker,
1596                                           struct rocker_port *rocker_port,
1597                                           struct rocker_desc_info *desc_info,
1598                                           void *priv)
1599 {
1600         struct ethtool_cmd *ecmd = priv;
1601         struct rocker_tlv *cmd_info;
1602
1603         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1604                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1605                 return -EMSGSIZE;
1606         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1607         if (!cmd_info)
1608                 return -EMSGSIZE;
1609         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1610                                rocker_port->lport))
1611                 return -EMSGSIZE;
1612         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_SPEED,
1613                                ethtool_cmd_speed(ecmd)))
1614                 return -EMSGSIZE;
1615         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_DUPLEX,
1616                               ecmd->duplex))
1617                 return -EMSGSIZE;
1618         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_AUTONEG,
1619                               ecmd->autoneg))
1620                 return -EMSGSIZE;
1621         rocker_tlv_nest_end(desc_info, cmd_info);
1622         return 0;
1623 }
1624
1625 static int
1626 rocker_cmd_set_port_settings_macaddr_prep(struct rocker *rocker,
1627                                           struct rocker_port *rocker_port,
1628                                           struct rocker_desc_info *desc_info,
1629                                           void *priv)
1630 {
1631         unsigned char *macaddr = priv;
1632         struct rocker_tlv *cmd_info;
1633
1634         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1635                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1636                 return -EMSGSIZE;
1637         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1638         if (!cmd_info)
1639                 return -EMSGSIZE;
1640         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1641                                rocker_port->lport))
1642                 return -EMSGSIZE;
1643         if (rocker_tlv_put(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_MACADDR,
1644                            ETH_ALEN, macaddr))
1645                 return -EMSGSIZE;
1646         rocker_tlv_nest_end(desc_info, cmd_info);
1647         return 0;
1648 }
1649
1650 static int
1651 rocker_cmd_set_port_learning_prep(struct rocker *rocker,
1652                                   struct rocker_port *rocker_port,
1653                                   struct rocker_desc_info *desc_info,
1654                                   void *priv)
1655 {
1656         struct rocker_tlv *cmd_info;
1657
1658         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1659                                ROCKER_TLV_CMD_TYPE_SET_PORT_SETTINGS))
1660                 return -EMSGSIZE;
1661         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1662         if (!cmd_info)
1663                 return -EMSGSIZE;
1664         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LPORT,
1665                                rocker_port->lport))
1666                 return -EMSGSIZE;
1667         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_CMD_PORT_SETTINGS_LEARNING,
1668                               !!(rocker_port->brport_flags & BR_LEARNING)))
1669                 return -EMSGSIZE;
1670         rocker_tlv_nest_end(desc_info, cmd_info);
1671         return 0;
1672 }
1673
1674 static int rocker_cmd_get_port_settings_ethtool(struct rocker_port *rocker_port,
1675                                                 struct ethtool_cmd *ecmd)
1676 {
1677         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1678                                rocker_cmd_get_port_settings_prep, NULL,
1679                                rocker_cmd_get_port_settings_ethtool_proc,
1680                                ecmd, false);
1681 }
1682
1683 static int rocker_cmd_get_port_settings_macaddr(struct rocker_port *rocker_port,
1684                                                 unsigned char *macaddr)
1685 {
1686         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1687                                rocker_cmd_get_port_settings_prep, NULL,
1688                                rocker_cmd_get_port_settings_macaddr_proc,
1689                                macaddr, false);
1690 }
1691
1692 static int rocker_cmd_set_port_settings_ethtool(struct rocker_port *rocker_port,
1693                                                 struct ethtool_cmd *ecmd)
1694 {
1695         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1696                                rocker_cmd_set_port_settings_ethtool_prep,
1697                                ecmd, NULL, NULL, false);
1698 }
1699
1700 static int rocker_cmd_set_port_settings_macaddr(struct rocker_port *rocker_port,
1701                                                 unsigned char *macaddr)
1702 {
1703         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1704                                rocker_cmd_set_port_settings_macaddr_prep,
1705                                macaddr, NULL, NULL, false);
1706 }
1707
1708 static int rocker_port_set_learning(struct rocker_port *rocker_port)
1709 {
1710         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
1711                                rocker_cmd_set_port_learning_prep,
1712                                NULL, NULL, NULL, false);
1713 }
1714
1715 static int rocker_cmd_flow_tbl_add_ig_port(struct rocker_desc_info *desc_info,
1716                                            struct rocker_flow_tbl_entry *entry)
1717 {
1718         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1719                                entry->key.ig_port.in_lport))
1720                 return -EMSGSIZE;
1721         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1722                                entry->key.ig_port.in_lport_mask))
1723                 return -EMSGSIZE;
1724         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1725                                entry->key.ig_port.goto_tbl))
1726                 return -EMSGSIZE;
1727
1728         return 0;
1729 }
1730
1731 static int rocker_cmd_flow_tbl_add_vlan(struct rocker_desc_info *desc_info,
1732                                         struct rocker_flow_tbl_entry *entry)
1733 {
1734         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1735                                entry->key.vlan.in_lport))
1736                 return -EMSGSIZE;
1737         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1738                                 entry->key.vlan.vlan_id))
1739                 return -EMSGSIZE;
1740         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1741                                 entry->key.vlan.vlan_id_mask))
1742                 return -EMSGSIZE;
1743         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1744                                entry->key.vlan.goto_tbl))
1745                 return -EMSGSIZE;
1746         if (entry->key.vlan.untagged &&
1747             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_NEW_VLAN_ID,
1748                                 entry->key.vlan.new_vlan_id))
1749                 return -EMSGSIZE;
1750
1751         return 0;
1752 }
1753
1754 static int rocker_cmd_flow_tbl_add_term_mac(struct rocker_desc_info *desc_info,
1755                                             struct rocker_flow_tbl_entry *entry)
1756 {
1757         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1758                                entry->key.term_mac.in_lport))
1759                 return -EMSGSIZE;
1760         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1761                                entry->key.term_mac.in_lport_mask))
1762                 return -EMSGSIZE;
1763         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1764                                 entry->key.term_mac.eth_type))
1765                 return -EMSGSIZE;
1766         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1767                            ETH_ALEN, entry->key.term_mac.eth_dst))
1768                 return -EMSGSIZE;
1769         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1770                            ETH_ALEN, entry->key.term_mac.eth_dst_mask))
1771                 return -EMSGSIZE;
1772         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1773                                 entry->key.term_mac.vlan_id))
1774                 return -EMSGSIZE;
1775         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1776                                 entry->key.term_mac.vlan_id_mask))
1777                 return -EMSGSIZE;
1778         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1779                                entry->key.term_mac.goto_tbl))
1780                 return -EMSGSIZE;
1781         if (entry->key.term_mac.copy_to_cpu &&
1782             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1783                               entry->key.term_mac.copy_to_cpu))
1784                 return -EMSGSIZE;
1785
1786         return 0;
1787 }
1788
1789 static int
1790 rocker_cmd_flow_tbl_add_ucast_routing(struct rocker_desc_info *desc_info,
1791                                       struct rocker_flow_tbl_entry *entry)
1792 {
1793         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1794                                 entry->key.ucast_routing.eth_type))
1795                 return -EMSGSIZE;
1796         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP,
1797                                 entry->key.ucast_routing.dst4))
1798                 return -EMSGSIZE;
1799         if (rocker_tlv_put_be32(desc_info, ROCKER_TLV_OF_DPA_DST_IP_MASK,
1800                                 entry->key.ucast_routing.dst4_mask))
1801                 return -EMSGSIZE;
1802         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1803                                entry->key.ucast_routing.goto_tbl))
1804                 return -EMSGSIZE;
1805         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1806                                entry->key.ucast_routing.group_id))
1807                 return -EMSGSIZE;
1808
1809         return 0;
1810 }
1811
1812 static int rocker_cmd_flow_tbl_add_bridge(struct rocker_desc_info *desc_info,
1813                                           struct rocker_flow_tbl_entry *entry)
1814 {
1815         if (entry->key.bridge.has_eth_dst &&
1816             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1817                            ETH_ALEN, entry->key.bridge.eth_dst))
1818                 return -EMSGSIZE;
1819         if (entry->key.bridge.has_eth_dst_mask &&
1820             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1821                            ETH_ALEN, entry->key.bridge.eth_dst_mask))
1822                 return -EMSGSIZE;
1823         if (entry->key.bridge.vlan_id &&
1824             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1825                                 entry->key.bridge.vlan_id))
1826                 return -EMSGSIZE;
1827         if (entry->key.bridge.tunnel_id &&
1828             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_TUNNEL_ID,
1829                                entry->key.bridge.tunnel_id))
1830                 return -EMSGSIZE;
1831         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GOTO_TABLE_ID,
1832                                entry->key.bridge.goto_tbl))
1833                 return -EMSGSIZE;
1834         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1835                                entry->key.bridge.group_id))
1836                 return -EMSGSIZE;
1837         if (entry->key.bridge.copy_to_cpu &&
1838             rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_COPY_CPU_ACTION,
1839                               entry->key.bridge.copy_to_cpu))
1840                 return -EMSGSIZE;
1841
1842         return 0;
1843 }
1844
1845 static int rocker_cmd_flow_tbl_add_acl(struct rocker_desc_info *desc_info,
1846                                        struct rocker_flow_tbl_entry *entry)
1847 {
1848         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT,
1849                                entry->key.acl.in_lport))
1850                 return -EMSGSIZE;
1851         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_IN_LPORT_MASK,
1852                                entry->key.acl.in_lport_mask))
1853                 return -EMSGSIZE;
1854         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
1855                            ETH_ALEN, entry->key.acl.eth_src))
1856                 return -EMSGSIZE;
1857         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC_MASK,
1858                            ETH_ALEN, entry->key.acl.eth_src_mask))
1859                 return -EMSGSIZE;
1860         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
1861                            ETH_ALEN, entry->key.acl.eth_dst))
1862                 return -EMSGSIZE;
1863         if (rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC_MASK,
1864                            ETH_ALEN, entry->key.acl.eth_dst_mask))
1865                 return -EMSGSIZE;
1866         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_ETHERTYPE,
1867                                 entry->key.acl.eth_type))
1868                 return -EMSGSIZE;
1869         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
1870                                 entry->key.acl.vlan_id))
1871                 return -EMSGSIZE;
1872         if (rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID_MASK,
1873                                 entry->key.acl.vlan_id_mask))
1874                 return -EMSGSIZE;
1875
1876         switch (ntohs(entry->key.acl.eth_type)) {
1877         case ETH_P_IP:
1878         case ETH_P_IPV6:
1879                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_PROTO,
1880                                       entry->key.acl.ip_proto))
1881                         return -EMSGSIZE;
1882                 if (rocker_tlv_put_u8(desc_info,
1883                                       ROCKER_TLV_OF_DPA_IP_PROTO_MASK,
1884                                       entry->key.acl.ip_proto_mask))
1885                         return -EMSGSIZE;
1886                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_DSCP,
1887                                       entry->key.acl.ip_tos & 0x3f))
1888                         return -EMSGSIZE;
1889                 if (rocker_tlv_put_u8(desc_info,
1890                                       ROCKER_TLV_OF_DPA_IP_DSCP_MASK,
1891                                       entry->key.acl.ip_tos_mask & 0x3f))
1892                         return -EMSGSIZE;
1893                 if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_IP_ECN,
1894                                       (entry->key.acl.ip_tos & 0xc0) >> 6))
1895                         return -EMSGSIZE;
1896                 if (rocker_tlv_put_u8(desc_info,
1897                                       ROCKER_TLV_OF_DPA_IP_ECN_MASK,
1898                                       (entry->key.acl.ip_tos_mask & 0xc0) >> 6))
1899                         return -EMSGSIZE;
1900                 break;
1901         }
1902
1903         if (entry->key.acl.group_id != ROCKER_GROUP_NONE &&
1904             rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
1905                                entry->key.acl.group_id))
1906                 return -EMSGSIZE;
1907
1908         return 0;
1909 }
1910
1911 static int rocker_cmd_flow_tbl_add(struct rocker *rocker,
1912                                    struct rocker_port *rocker_port,
1913                                    struct rocker_desc_info *desc_info,
1914                                    void *priv)
1915 {
1916         struct rocker_flow_tbl_entry *entry = priv;
1917         struct rocker_tlv *cmd_info;
1918         int err = 0;
1919
1920         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1921                                ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_ADD))
1922                 return -EMSGSIZE;
1923         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1924         if (!cmd_info)
1925                 return -EMSGSIZE;
1926         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_TABLE_ID,
1927                                entry->key.tbl_id))
1928                 return -EMSGSIZE;
1929         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_PRIORITY,
1930                                entry->key.priority))
1931                 return -EMSGSIZE;
1932         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_HARDTIME, 0))
1933                 return -EMSGSIZE;
1934         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1935                                entry->cookie))
1936                 return -EMSGSIZE;
1937
1938         switch (entry->key.tbl_id) {
1939         case ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT:
1940                 err = rocker_cmd_flow_tbl_add_ig_port(desc_info, entry);
1941                 break;
1942         case ROCKER_OF_DPA_TABLE_ID_VLAN:
1943                 err = rocker_cmd_flow_tbl_add_vlan(desc_info, entry);
1944                 break;
1945         case ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC:
1946                 err = rocker_cmd_flow_tbl_add_term_mac(desc_info, entry);
1947                 break;
1948         case ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING:
1949                 err = rocker_cmd_flow_tbl_add_ucast_routing(desc_info, entry);
1950                 break;
1951         case ROCKER_OF_DPA_TABLE_ID_BRIDGING:
1952                 err = rocker_cmd_flow_tbl_add_bridge(desc_info, entry);
1953                 break;
1954         case ROCKER_OF_DPA_TABLE_ID_ACL_POLICY:
1955                 err = rocker_cmd_flow_tbl_add_acl(desc_info, entry);
1956                 break;
1957         default:
1958                 err = -ENOTSUPP;
1959                 break;
1960         }
1961
1962         if (err)
1963                 return err;
1964
1965         rocker_tlv_nest_end(desc_info, cmd_info);
1966
1967         return 0;
1968 }
1969
1970 static int rocker_cmd_flow_tbl_del(struct rocker *rocker,
1971                                    struct rocker_port *rocker_port,
1972                                    struct rocker_desc_info *desc_info,
1973                                    void *priv)
1974 {
1975         const struct rocker_flow_tbl_entry *entry = priv;
1976         struct rocker_tlv *cmd_info;
1977
1978         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
1979                                ROCKER_TLV_CMD_TYPE_OF_DPA_FLOW_DEL))
1980                 return -EMSGSIZE;
1981         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
1982         if (!cmd_info)
1983                 return -EMSGSIZE;
1984         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_OF_DPA_COOKIE,
1985                                entry->cookie))
1986                 return -EMSGSIZE;
1987         rocker_tlv_nest_end(desc_info, cmd_info);
1988
1989         return 0;
1990 }
1991
1992 static int
1993 rocker_cmd_group_tbl_add_l2_interface(struct rocker_desc_info *desc_info,
1994                                       struct rocker_group_tbl_entry *entry)
1995 {
1996         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_OUT_LPORT,
1997                                ROCKER_GROUP_PORT_GET(entry->group_id)))
1998                 return -EMSGSIZE;
1999         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_POP_VLAN,
2000                               entry->l2_interface.pop_vlan))
2001                 return -EMSGSIZE;
2002
2003         return 0;
2004 }
2005
2006 static int
2007 rocker_cmd_group_tbl_add_l2_rewrite(struct rocker_desc_info *desc_info,
2008                                     struct rocker_group_tbl_entry *entry)
2009 {
2010         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2011                                entry->l2_rewrite.group_id))
2012                 return -EMSGSIZE;
2013         if (!is_zero_ether_addr(entry->l2_rewrite.eth_src) &&
2014             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2015                            ETH_ALEN, entry->l2_rewrite.eth_src))
2016                 return -EMSGSIZE;
2017         if (!is_zero_ether_addr(entry->l2_rewrite.eth_dst) &&
2018             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2019                            ETH_ALEN, entry->l2_rewrite.eth_dst))
2020                 return -EMSGSIZE;
2021         if (entry->l2_rewrite.vlan_id &&
2022             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2023                                 entry->l2_rewrite.vlan_id))
2024                 return -EMSGSIZE;
2025
2026         return 0;
2027 }
2028
2029 static int
2030 rocker_cmd_group_tbl_add_group_ids(struct rocker_desc_info *desc_info,
2031                                    struct rocker_group_tbl_entry *entry)
2032 {
2033         int i;
2034         struct rocker_tlv *group_ids;
2035
2036         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_OF_DPA_GROUP_COUNT,
2037                                entry->group_count))
2038                 return -EMSGSIZE;
2039
2040         group_ids = rocker_tlv_nest_start(desc_info,
2041                                           ROCKER_TLV_OF_DPA_GROUP_IDS);
2042         if (!group_ids)
2043                 return -EMSGSIZE;
2044
2045         for (i = 0; i < entry->group_count; i++)
2046                 /* Note TLV array is 1-based */
2047                 if (rocker_tlv_put_u32(desc_info, i + 1, entry->group_ids[i]))
2048                         return -EMSGSIZE;
2049
2050         rocker_tlv_nest_end(desc_info, group_ids);
2051
2052         return 0;
2053 }
2054
2055 static int
2056 rocker_cmd_group_tbl_add_l3_unicast(struct rocker_desc_info *desc_info,
2057                                     struct rocker_group_tbl_entry *entry)
2058 {
2059         if (!is_zero_ether_addr(entry->l3_unicast.eth_src) &&
2060             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_SRC_MAC,
2061                            ETH_ALEN, entry->l3_unicast.eth_src))
2062                 return -EMSGSIZE;
2063         if (!is_zero_ether_addr(entry->l3_unicast.eth_dst) &&
2064             rocker_tlv_put(desc_info, ROCKER_TLV_OF_DPA_DST_MAC,
2065                            ETH_ALEN, entry->l3_unicast.eth_dst))
2066                 return -EMSGSIZE;
2067         if (entry->l3_unicast.vlan_id &&
2068             rocker_tlv_put_be16(desc_info, ROCKER_TLV_OF_DPA_VLAN_ID,
2069                                 entry->l3_unicast.vlan_id))
2070                 return -EMSGSIZE;
2071         if (rocker_tlv_put_u8(desc_info, ROCKER_TLV_OF_DPA_TTL_CHECK,
2072                               entry->l3_unicast.ttl_check))
2073                 return -EMSGSIZE;
2074         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID_LOWER,
2075                                entry->l3_unicast.group_id))
2076                 return -EMSGSIZE;
2077
2078         return 0;
2079 }
2080
2081 static int rocker_cmd_group_tbl_add(struct rocker *rocker,
2082                                     struct rocker_port *rocker_port,
2083                                     struct rocker_desc_info *desc_info,
2084                                     void *priv)
2085 {
2086         struct rocker_group_tbl_entry *entry = priv;
2087         struct rocker_tlv *cmd_info;
2088         int err = 0;
2089
2090         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2091                 return -EMSGSIZE;
2092         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2093         if (!cmd_info)
2094                 return -EMSGSIZE;
2095
2096         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2097                                entry->group_id))
2098                 return -EMSGSIZE;
2099
2100         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2101         case ROCKER_OF_DPA_GROUP_TYPE_L2_INTERFACE:
2102                 err = rocker_cmd_group_tbl_add_l2_interface(desc_info, entry);
2103                 break;
2104         case ROCKER_OF_DPA_GROUP_TYPE_L2_REWRITE:
2105                 err = rocker_cmd_group_tbl_add_l2_rewrite(desc_info, entry);
2106                 break;
2107         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2108         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2109                 err = rocker_cmd_group_tbl_add_group_ids(desc_info, entry);
2110                 break;
2111         case ROCKER_OF_DPA_GROUP_TYPE_L3_UCAST:
2112                 err = rocker_cmd_group_tbl_add_l3_unicast(desc_info, entry);
2113                 break;
2114         default:
2115                 err = -ENOTSUPP;
2116                 break;
2117         }
2118
2119         if (err)
2120                 return err;
2121
2122         rocker_tlv_nest_end(desc_info, cmd_info);
2123
2124         return 0;
2125 }
2126
2127 static int rocker_cmd_group_tbl_del(struct rocker *rocker,
2128                                     struct rocker_port *rocker_port,
2129                                     struct rocker_desc_info *desc_info,
2130                                     void *priv)
2131 {
2132         const struct rocker_group_tbl_entry *entry = priv;
2133         struct rocker_tlv *cmd_info;
2134
2135         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE, entry->cmd))
2136                 return -EMSGSIZE;
2137         cmd_info = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
2138         if (!cmd_info)
2139                 return -EMSGSIZE;
2140         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_OF_DPA_GROUP_ID,
2141                                entry->group_id))
2142                 return -EMSGSIZE;
2143         rocker_tlv_nest_end(desc_info, cmd_info);
2144
2145         return 0;
2146 }
2147
2148 /*****************************************
2149  * Flow, group, FDB, internal VLAN tables
2150  *****************************************/
2151
2152 static int rocker_init_tbls(struct rocker *rocker)
2153 {
2154         hash_init(rocker->flow_tbl);
2155         spin_lock_init(&rocker->flow_tbl_lock);
2156
2157         hash_init(rocker->group_tbl);
2158         spin_lock_init(&rocker->group_tbl_lock);
2159
2160         hash_init(rocker->fdb_tbl);
2161         spin_lock_init(&rocker->fdb_tbl_lock);
2162
2163         hash_init(rocker->internal_vlan_tbl);
2164         spin_lock_init(&rocker->internal_vlan_tbl_lock);
2165
2166         return 0;
2167 }
2168
2169 static void rocker_free_tbls(struct rocker *rocker)
2170 {
2171         unsigned long flags;
2172         struct rocker_flow_tbl_entry *flow_entry;
2173         struct rocker_group_tbl_entry *group_entry;
2174         struct rocker_fdb_tbl_entry *fdb_entry;
2175         struct rocker_internal_vlan_tbl_entry *internal_vlan_entry;
2176         struct hlist_node *tmp;
2177         int bkt;
2178
2179         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2180         hash_for_each_safe(rocker->flow_tbl, bkt, tmp, flow_entry, entry)
2181                 hash_del(&flow_entry->entry);
2182         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2183
2184         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2185         hash_for_each_safe(rocker->group_tbl, bkt, tmp, group_entry, entry)
2186                 hash_del(&group_entry->entry);
2187         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2188
2189         spin_lock_irqsave(&rocker->fdb_tbl_lock, flags);
2190         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, fdb_entry, entry)
2191                 hash_del(&fdb_entry->entry);
2192         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, flags);
2193
2194         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, flags);
2195         hash_for_each_safe(rocker->internal_vlan_tbl, bkt,
2196                            tmp, internal_vlan_entry, entry)
2197                 hash_del(&internal_vlan_entry->entry);
2198         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, flags);
2199 }
2200
2201 static struct rocker_flow_tbl_entry *
2202 rocker_flow_tbl_find(struct rocker *rocker, struct rocker_flow_tbl_entry *match)
2203 {
2204         struct rocker_flow_tbl_entry *found;
2205
2206         hash_for_each_possible(rocker->flow_tbl, found,
2207                                entry, match->key_crc32) {
2208                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
2209                         return found;
2210         }
2211
2212         return NULL;
2213 }
2214
2215 static int rocker_flow_tbl_add(struct rocker_port *rocker_port,
2216                                struct rocker_flow_tbl_entry *match,
2217                                bool nowait)
2218 {
2219         struct rocker *rocker = rocker_port->rocker;
2220         struct rocker_flow_tbl_entry *found;
2221         unsigned long flags;
2222         bool add_to_hw = false;
2223         int err = 0;
2224
2225         match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2226
2227         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2228
2229         found = rocker_flow_tbl_find(rocker, match);
2230
2231         if (found) {
2232                 kfree(match);
2233         } else {
2234                 found = match;
2235                 found->cookie = rocker->flow_tbl_next_cookie++;
2236                 hash_add(rocker->flow_tbl, &found->entry, found->key_crc32);
2237                 add_to_hw = true;
2238         }
2239
2240         found->ref_count++;
2241
2242         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2243
2244         if (add_to_hw) {
2245                 err = rocker_cmd_exec(rocker, rocker_port,
2246                                       rocker_cmd_flow_tbl_add,
2247                                       found, NULL, NULL, nowait);
2248                 if (err) {
2249                         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2250                         hash_del(&found->entry);
2251                         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2252                         kfree(found);
2253                 }
2254         }
2255
2256         return err;
2257 }
2258
2259 static int rocker_flow_tbl_del(struct rocker_port *rocker_port,
2260                                struct rocker_flow_tbl_entry *match,
2261                                bool nowait)
2262 {
2263         struct rocker *rocker = rocker_port->rocker;
2264         struct rocker_flow_tbl_entry *found;
2265         unsigned long flags;
2266         bool del_from_hw = false;
2267         int err = 0;
2268
2269         match->key_crc32 = crc32(~0, &match->key, sizeof(match->key));
2270
2271         spin_lock_irqsave(&rocker->flow_tbl_lock, flags);
2272
2273         found = rocker_flow_tbl_find(rocker, match);
2274
2275         if (found) {
2276                 found->ref_count--;
2277                 if (found->ref_count == 0) {
2278                         hash_del(&found->entry);
2279                         del_from_hw = true;
2280                 }
2281         }
2282
2283         spin_unlock_irqrestore(&rocker->flow_tbl_lock, flags);
2284
2285         kfree(match);
2286
2287         if (del_from_hw) {
2288                 err = rocker_cmd_exec(rocker, rocker_port,
2289                                       rocker_cmd_flow_tbl_del,
2290                                       found, NULL, NULL, nowait);
2291                 kfree(found);
2292         }
2293
2294         return err;
2295 }
2296
2297 static gfp_t rocker_op_flags_gfp(int flags)
2298 {
2299         return flags & ROCKER_OP_FLAG_NOWAIT ? GFP_ATOMIC : GFP_KERNEL;
2300 }
2301
2302 static int rocker_flow_tbl_do(struct rocker_port *rocker_port,
2303                               int flags, struct rocker_flow_tbl_entry *entry)
2304 {
2305         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2306
2307         if (flags & ROCKER_OP_FLAG_REMOVE)
2308                 return rocker_flow_tbl_del(rocker_port, entry, nowait);
2309         else
2310                 return rocker_flow_tbl_add(rocker_port, entry, nowait);
2311 }
2312
2313 static int rocker_flow_tbl_ig_port(struct rocker_port *rocker_port,
2314                                    int flags, u32 in_lport, u32 in_lport_mask,
2315                                    enum rocker_of_dpa_table_id goto_tbl)
2316 {
2317         struct rocker_flow_tbl_entry *entry;
2318
2319         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2320         if (!entry)
2321                 return -ENOMEM;
2322
2323         entry->key.priority = ROCKER_PRIORITY_IG_PORT;
2324         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_INGRESS_PORT;
2325         entry->key.ig_port.in_lport = in_lport;
2326         entry->key.ig_port.in_lport_mask = in_lport_mask;
2327         entry->key.ig_port.goto_tbl = goto_tbl;
2328
2329         return rocker_flow_tbl_do(rocker_port, flags, entry);
2330 }
2331
2332 static int rocker_flow_tbl_vlan(struct rocker_port *rocker_port,
2333                                 int flags, u32 in_lport,
2334                                 __be16 vlan_id, __be16 vlan_id_mask,
2335                                 enum rocker_of_dpa_table_id goto_tbl,
2336                                 bool untagged, __be16 new_vlan_id)
2337 {
2338         struct rocker_flow_tbl_entry *entry;
2339
2340         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2341         if (!entry)
2342                 return -ENOMEM;
2343
2344         entry->key.priority = ROCKER_PRIORITY_VLAN;
2345         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_VLAN;
2346         entry->key.vlan.in_lport = in_lport;
2347         entry->key.vlan.vlan_id = vlan_id;
2348         entry->key.vlan.vlan_id_mask = vlan_id_mask;
2349         entry->key.vlan.goto_tbl = goto_tbl;
2350
2351         entry->key.vlan.untagged = untagged;
2352         entry->key.vlan.new_vlan_id = new_vlan_id;
2353
2354         return rocker_flow_tbl_do(rocker_port, flags, entry);
2355 }
2356
2357 static int rocker_flow_tbl_term_mac(struct rocker_port *rocker_port,
2358                                     u32 in_lport, u32 in_lport_mask,
2359                                     __be16 eth_type, const u8 *eth_dst,
2360                                     const u8 *eth_dst_mask, __be16 vlan_id,
2361                                     __be16 vlan_id_mask, bool copy_to_cpu,
2362                                     int flags)
2363 {
2364         struct rocker_flow_tbl_entry *entry;
2365
2366         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2367         if (!entry)
2368                 return -ENOMEM;
2369
2370         if (is_multicast_ether_addr(eth_dst)) {
2371                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_MCAST;
2372                 entry->key.term_mac.goto_tbl =
2373                          ROCKER_OF_DPA_TABLE_ID_MULTICAST_ROUTING;
2374         } else {
2375                 entry->key.priority = ROCKER_PRIORITY_TERM_MAC_UCAST;
2376                 entry->key.term_mac.goto_tbl =
2377                          ROCKER_OF_DPA_TABLE_ID_UNICAST_ROUTING;
2378         }
2379
2380         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2381         entry->key.term_mac.in_lport = in_lport;
2382         entry->key.term_mac.in_lport_mask = in_lport_mask;
2383         entry->key.term_mac.eth_type = eth_type;
2384         ether_addr_copy(entry->key.term_mac.eth_dst, eth_dst);
2385         ether_addr_copy(entry->key.term_mac.eth_dst_mask, eth_dst_mask);
2386         entry->key.term_mac.vlan_id = vlan_id;
2387         entry->key.term_mac.vlan_id_mask = vlan_id_mask;
2388         entry->key.term_mac.copy_to_cpu = copy_to_cpu;
2389
2390         return rocker_flow_tbl_do(rocker_port, flags, entry);
2391 }
2392
2393 static int rocker_flow_tbl_bridge(struct rocker_port *rocker_port,
2394                                   int flags,
2395                                   const u8 *eth_dst, const u8 *eth_dst_mask,
2396                                   __be16 vlan_id, u32 tunnel_id,
2397                                   enum rocker_of_dpa_table_id goto_tbl,
2398                                   u32 group_id, bool copy_to_cpu)
2399 {
2400         struct rocker_flow_tbl_entry *entry;
2401         u32 priority;
2402         bool vlan_bridging = !!vlan_id;
2403         bool dflt = !eth_dst || (eth_dst && eth_dst_mask);
2404         bool wild = false;
2405
2406         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2407         if (!entry)
2408                 return -ENOMEM;
2409
2410         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_BRIDGING;
2411
2412         if (eth_dst) {
2413                 entry->key.bridge.has_eth_dst = 1;
2414                 ether_addr_copy(entry->key.bridge.eth_dst, eth_dst);
2415         }
2416         if (eth_dst_mask) {
2417                 entry->key.bridge.has_eth_dst_mask = 1;
2418                 ether_addr_copy(entry->key.bridge.eth_dst_mask, eth_dst_mask);
2419                 if (memcmp(eth_dst_mask, ff_mac, ETH_ALEN))
2420                         wild = true;
2421         }
2422
2423         priority = ROCKER_PRIORITY_UNKNOWN;
2424         if (vlan_bridging && dflt && wild)
2425                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_WILD;
2426         else if (vlan_bridging && dflt && !wild)
2427                 priority = ROCKER_PRIORITY_BRIDGING_VLAN_DFLT_EXACT;
2428         else if (vlan_bridging && !dflt)
2429                 priority = ROCKER_PRIORITY_BRIDGING_VLAN;
2430         else if (!vlan_bridging && dflt && wild)
2431                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_WILD;
2432         else if (!vlan_bridging && dflt && !wild)
2433                 priority = ROCKER_PRIORITY_BRIDGING_TENANT_DFLT_EXACT;
2434         else if (!vlan_bridging && !dflt)
2435                 priority = ROCKER_PRIORITY_BRIDGING_TENANT;
2436
2437         entry->key.priority = priority;
2438         entry->key.bridge.vlan_id = vlan_id;
2439         entry->key.bridge.tunnel_id = tunnel_id;
2440         entry->key.bridge.goto_tbl = goto_tbl;
2441         entry->key.bridge.group_id = group_id;
2442         entry->key.bridge.copy_to_cpu = copy_to_cpu;
2443
2444         return rocker_flow_tbl_do(rocker_port, flags, entry);
2445 }
2446
2447 static int rocker_flow_tbl_acl(struct rocker_port *rocker_port,
2448                                int flags, u32 in_lport,
2449                                u32 in_lport_mask,
2450                                const u8 *eth_src, const u8 *eth_src_mask,
2451                                const u8 *eth_dst, const u8 *eth_dst_mask,
2452                                __be16 eth_type,
2453                                __be16 vlan_id, __be16 vlan_id_mask,
2454                                u8 ip_proto, u8 ip_proto_mask,
2455                                u8 ip_tos, u8 ip_tos_mask,
2456                                u32 group_id)
2457 {
2458         u32 priority;
2459         struct rocker_flow_tbl_entry *entry;
2460
2461         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2462         if (!entry)
2463                 return -ENOMEM;
2464
2465         priority = ROCKER_PRIORITY_ACL_NORMAL;
2466         if (eth_dst && eth_dst_mask) {
2467                 if (memcmp(eth_dst_mask, mcast_mac, ETH_ALEN) == 0)
2468                         priority = ROCKER_PRIORITY_ACL_DFLT;
2469                 else if (is_link_local_ether_addr(eth_dst))
2470                         priority = ROCKER_PRIORITY_ACL_CTRL;
2471         }
2472
2473         entry->key.priority = priority;
2474         entry->key.tbl_id = ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2475         entry->key.acl.in_lport = in_lport;
2476         entry->key.acl.in_lport_mask = in_lport_mask;
2477
2478         if (eth_src)
2479                 ether_addr_copy(entry->key.acl.eth_src, eth_src);
2480         if (eth_src_mask)
2481                 ether_addr_copy(entry->key.acl.eth_src_mask, eth_src_mask);
2482         if (eth_dst)
2483                 ether_addr_copy(entry->key.acl.eth_dst, eth_dst);
2484         if (eth_dst_mask)
2485                 ether_addr_copy(entry->key.acl.eth_dst_mask, eth_dst_mask);
2486
2487         entry->key.acl.eth_type = eth_type;
2488         entry->key.acl.vlan_id = vlan_id;
2489         entry->key.acl.vlan_id_mask = vlan_id_mask;
2490         entry->key.acl.ip_proto = ip_proto;
2491         entry->key.acl.ip_proto_mask = ip_proto_mask;
2492         entry->key.acl.ip_tos = ip_tos;
2493         entry->key.acl.ip_tos_mask = ip_tos_mask;
2494         entry->key.acl.group_id = group_id;
2495
2496         return rocker_flow_tbl_do(rocker_port, flags, entry);
2497 }
2498
2499 static struct rocker_group_tbl_entry *
2500 rocker_group_tbl_find(struct rocker *rocker,
2501                       struct rocker_group_tbl_entry *match)
2502 {
2503         struct rocker_group_tbl_entry *found;
2504
2505         hash_for_each_possible(rocker->group_tbl, found,
2506                                entry, match->group_id) {
2507                 if (found->group_id == match->group_id)
2508                         return found;
2509         }
2510
2511         return NULL;
2512 }
2513
2514 static void rocker_group_tbl_entry_free(struct rocker_group_tbl_entry *entry)
2515 {
2516         switch (ROCKER_GROUP_TYPE_GET(entry->group_id)) {
2517         case ROCKER_OF_DPA_GROUP_TYPE_L2_FLOOD:
2518         case ROCKER_OF_DPA_GROUP_TYPE_L2_MCAST:
2519                 kfree(entry->group_ids);
2520                 break;
2521         default:
2522                 break;
2523         }
2524         kfree(entry);
2525 }
2526
2527 static int rocker_group_tbl_add(struct rocker_port *rocker_port,
2528                                 struct rocker_group_tbl_entry *match,
2529                                 bool nowait)
2530 {
2531         struct rocker *rocker = rocker_port->rocker;
2532         struct rocker_group_tbl_entry *found;
2533         unsigned long flags;
2534         int err = 0;
2535
2536         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2537
2538         found = rocker_group_tbl_find(rocker, match);
2539
2540         if (found) {
2541                 hash_del(&found->entry);
2542                 rocker_group_tbl_entry_free(found);
2543                 found = match;
2544                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_MOD;
2545         } else {
2546                 found = match;
2547                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_ADD;
2548         }
2549
2550         hash_add(rocker->group_tbl, &found->entry, found->group_id);
2551
2552         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2553
2554         if (found->cmd)
2555                 err = rocker_cmd_exec(rocker, rocker_port,
2556                                       rocker_cmd_group_tbl_add,
2557                                       found, NULL, NULL, nowait);
2558
2559         return err;
2560 }
2561
2562 static int rocker_group_tbl_del(struct rocker_port *rocker_port,
2563                                 struct rocker_group_tbl_entry *match,
2564                                 bool nowait)
2565 {
2566         struct rocker *rocker = rocker_port->rocker;
2567         struct rocker_group_tbl_entry *found;
2568         unsigned long flags;
2569         int err = 0;
2570
2571         spin_lock_irqsave(&rocker->group_tbl_lock, flags);
2572
2573         found = rocker_group_tbl_find(rocker, match);
2574
2575         if (found) {
2576                 hash_del(&found->entry);
2577                 found->cmd = ROCKER_TLV_CMD_TYPE_OF_DPA_GROUP_DEL;
2578         }
2579
2580         spin_unlock_irqrestore(&rocker->group_tbl_lock, flags);
2581
2582         rocker_group_tbl_entry_free(match);
2583
2584         if (found) {
2585                 err = rocker_cmd_exec(rocker, rocker_port,
2586                                       rocker_cmd_group_tbl_del,
2587                                       found, NULL, NULL, nowait);
2588                 rocker_group_tbl_entry_free(found);
2589         }
2590
2591         return err;
2592 }
2593
2594 static int rocker_group_tbl_do(struct rocker_port *rocker_port,
2595                                int flags, struct rocker_group_tbl_entry *entry)
2596 {
2597         bool nowait = flags & ROCKER_OP_FLAG_NOWAIT;
2598
2599         if (flags & ROCKER_OP_FLAG_REMOVE)
2600                 return rocker_group_tbl_del(rocker_port, entry, nowait);
2601         else
2602                 return rocker_group_tbl_add(rocker_port, entry, nowait);
2603 }
2604
2605 static int rocker_group_l2_interface(struct rocker_port *rocker_port,
2606                                      int flags, __be16 vlan_id,
2607                                      u32 out_lport, int pop_vlan)
2608 {
2609         struct rocker_group_tbl_entry *entry;
2610
2611         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2612         if (!entry)
2613                 return -ENOMEM;
2614
2615         entry->group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2616         entry->l2_interface.pop_vlan = pop_vlan;
2617
2618         return rocker_group_tbl_do(rocker_port, flags, entry);
2619 }
2620
2621 static int rocker_group_l2_fan_out(struct rocker_port *rocker_port,
2622                                    int flags, u8 group_count,
2623                                    u32 *group_ids, u32 group_id)
2624 {
2625         struct rocker_group_tbl_entry *entry;
2626
2627         entry = kzalloc(sizeof(*entry), rocker_op_flags_gfp(flags));
2628         if (!entry)
2629                 return -ENOMEM;
2630
2631         entry->group_id = group_id;
2632         entry->group_count = group_count;
2633
2634         entry->group_ids = kcalloc(group_count, sizeof(u32),
2635                                    rocker_op_flags_gfp(flags));
2636         if (!entry->group_ids) {
2637                 kfree(entry);
2638                 return -ENOMEM;
2639         }
2640         memcpy(entry->group_ids, group_ids, group_count * sizeof(u32));
2641
2642         return rocker_group_tbl_do(rocker_port, flags, entry);
2643 }
2644
2645 static int rocker_group_l2_flood(struct rocker_port *rocker_port,
2646                                  int flags, __be16 vlan_id,
2647                                  u8 group_count, u32 *group_ids,
2648                                  u32 group_id)
2649 {
2650         return rocker_group_l2_fan_out(rocker_port, flags,
2651                                        group_count, group_ids,
2652                                        group_id);
2653 }
2654
2655 static int rocker_port_vlan_flood_group(struct rocker_port *rocker_port,
2656                                         int flags, __be16 vlan_id)
2657 {
2658         struct rocker_port *p;
2659         struct rocker *rocker = rocker_port->rocker;
2660         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2661         u32 group_ids[rocker->port_count];
2662         u8 group_count = 0;
2663         int err;
2664         int i;
2665
2666         /* Adjust the flood group for this VLAN.  The flood group
2667          * references an L2 interface group for each port in this
2668          * VLAN.
2669          */
2670
2671         for (i = 0; i < rocker->port_count; i++) {
2672                 p = rocker->ports[i];
2673                 if (!rocker_port_is_bridged(p))
2674                         continue;
2675                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap)) {
2676                         group_ids[group_count++] =
2677                                 ROCKER_GROUP_L2_INTERFACE(vlan_id,
2678                                                           p->lport);
2679                 }
2680         }
2681
2682         /* If there are no bridged ports in this VLAN, we're done */
2683         if (group_count == 0)
2684                 return 0;
2685
2686         err = rocker_group_l2_flood(rocker_port, flags, vlan_id,
2687                                     group_count, group_ids,
2688                                     group_id);
2689         if (err)
2690                 netdev_err(rocker_port->dev,
2691                            "Error (%d) port VLAN l2 flood group\n", err);
2692
2693         return err;
2694 }
2695
2696 static int rocker_port_vlan_l2_groups(struct rocker_port *rocker_port,
2697                                       int flags, __be16 vlan_id,
2698                                       bool pop_vlan)
2699 {
2700         struct rocker *rocker = rocker_port->rocker;
2701         struct rocker_port *p;
2702         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2703         u32 out_lport;
2704         int ref = 0;
2705         int err;
2706         int i;
2707
2708         /* An L2 interface group for this port in this VLAN, but
2709          * only when port STP state is LEARNING|FORWARDING.
2710          */
2711
2712         if (rocker_port->stp_state == BR_STATE_LEARNING ||
2713             rocker_port->stp_state == BR_STATE_FORWARDING) {
2714                 out_lport = rocker_port->lport;
2715                 err = rocker_group_l2_interface(rocker_port, flags,
2716                                                 vlan_id, out_lport,
2717                                                 pop_vlan);
2718                 if (err) {
2719                         netdev_err(rocker_port->dev,
2720                                    "Error (%d) port VLAN l2 group for lport %d\n",
2721                                    err, out_lport);
2722                         return err;
2723                 }
2724         }
2725
2726         /* An L2 interface group for this VLAN to CPU port.
2727          * Add when first port joins this VLAN and destroy when
2728          * last port leaves this VLAN.
2729          */
2730
2731         for (i = 0; i < rocker->port_count; i++) {
2732                 p = rocker->ports[i];
2733                 if (test_bit(ntohs(vlan_id), p->vlan_bitmap))
2734                         ref++;
2735         }
2736
2737         if ((!adding || ref != 1) && (adding || ref != 0))
2738                 return 0;
2739
2740         out_lport = 0;
2741         err = rocker_group_l2_interface(rocker_port, flags,
2742                                         vlan_id, out_lport,
2743                                         pop_vlan);
2744         if (err) {
2745                 netdev_err(rocker_port->dev,
2746                            "Error (%d) port VLAN l2 group for CPU port\n", err);
2747                 return err;
2748         }
2749
2750         return 0;
2751 }
2752
2753 static struct rocker_ctrl {
2754         const u8 *eth_dst;
2755         const u8 *eth_dst_mask;
2756         __be16 eth_type;
2757         bool acl;
2758         bool bridge;
2759         bool term;
2760         bool copy_to_cpu;
2761 } rocker_ctrls[] = {
2762         [ROCKER_CTRL_LINK_LOCAL_MCAST] = {
2763                 /* pass link local multicast pkts up to CPU for filtering */
2764                 .eth_dst = ll_mac,
2765                 .eth_dst_mask = ll_mask,
2766                 .acl = true,
2767         },
2768         [ROCKER_CTRL_LOCAL_ARP] = {
2769                 /* pass local ARP pkts up to CPU */
2770                 .eth_dst = zero_mac,
2771                 .eth_dst_mask = zero_mac,
2772                 .eth_type = htons(ETH_P_ARP),
2773                 .acl = true,
2774         },
2775         [ROCKER_CTRL_IPV4_MCAST] = {
2776                 /* pass IPv4 mcast pkts up to CPU, RFC 1112 */
2777                 .eth_dst = ipv4_mcast,
2778                 .eth_dst_mask = ipv4_mask,
2779                 .eth_type = htons(ETH_P_IP),
2780                 .term  = true,
2781                 .copy_to_cpu = true,
2782         },
2783         [ROCKER_CTRL_IPV6_MCAST] = {
2784                 /* pass IPv6 mcast pkts up to CPU, RFC 2464 */
2785                 .eth_dst = ipv6_mcast,
2786                 .eth_dst_mask = ipv6_mask,
2787                 .eth_type = htons(ETH_P_IPV6),
2788                 .term  = true,
2789                 .copy_to_cpu = true,
2790         },
2791         [ROCKER_CTRL_DFLT_BRIDGING] = {
2792                 /* flood any pkts on vlan */
2793                 .bridge = true,
2794                 .copy_to_cpu = true,
2795         },
2796 };
2797
2798 static int rocker_port_ctrl_vlan_acl(struct rocker_port *rocker_port,
2799                                      int flags, struct rocker_ctrl *ctrl,
2800                                      __be16 vlan_id)
2801 {
2802         u32 in_lport = rocker_port->lport;
2803         u32 in_lport_mask = 0xffffffff;
2804         u32 out_lport = 0;
2805         u8 *eth_src = NULL;
2806         u8 *eth_src_mask = NULL;
2807         __be16 vlan_id_mask = htons(0xffff);
2808         u8 ip_proto = 0;
2809         u8 ip_proto_mask = 0;
2810         u8 ip_tos = 0;
2811         u8 ip_tos_mask = 0;
2812         u32 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
2813         int err;
2814
2815         err = rocker_flow_tbl_acl(rocker_port, flags,
2816                                   in_lport, in_lport_mask,
2817                                   eth_src, eth_src_mask,
2818                                   ctrl->eth_dst, ctrl->eth_dst_mask,
2819                                   ctrl->eth_type,
2820                                   vlan_id, vlan_id_mask,
2821                                   ip_proto, ip_proto_mask,
2822                                   ip_tos, ip_tos_mask,
2823                                   group_id);
2824
2825         if (err)
2826                 netdev_err(rocker_port->dev, "Error (%d) ctrl ACL\n", err);
2827
2828         return err;
2829 }
2830
2831 static int rocker_port_ctrl_vlan_bridge(struct rocker_port *rocker_port,
2832                                         int flags, struct rocker_ctrl *ctrl,
2833                                         __be16 vlan_id)
2834 {
2835         enum rocker_of_dpa_table_id goto_tbl =
2836                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
2837         u32 group_id = ROCKER_GROUP_L2_FLOOD(vlan_id, 0);
2838         u32 tunnel_id = 0;
2839         int err;
2840
2841         if (!rocker_port_is_bridged(rocker_port))
2842                 return 0;
2843
2844         err = rocker_flow_tbl_bridge(rocker_port, flags,
2845                                      ctrl->eth_dst, ctrl->eth_dst_mask,
2846                                      vlan_id, tunnel_id,
2847                                      goto_tbl, group_id, ctrl->copy_to_cpu);
2848
2849         if (err)
2850                 netdev_err(rocker_port->dev, "Error (%d) ctrl FLOOD\n", err);
2851
2852         return err;
2853 }
2854
2855 static int rocker_port_ctrl_vlan_term(struct rocker_port *rocker_port,
2856                                       int flags, struct rocker_ctrl *ctrl,
2857                                       __be16 vlan_id)
2858 {
2859         u32 in_lport_mask = 0xffffffff;
2860         __be16 vlan_id_mask = htons(0xffff);
2861         int err;
2862
2863         if (ntohs(vlan_id) == 0)
2864                 vlan_id = rocker_port->internal_vlan_id;
2865
2866         err = rocker_flow_tbl_term_mac(rocker_port,
2867                                        rocker_port->lport, in_lport_mask,
2868                                        ctrl->eth_type, ctrl->eth_dst,
2869                                        ctrl->eth_dst_mask, vlan_id,
2870                                        vlan_id_mask, ctrl->copy_to_cpu,
2871                                        flags);
2872
2873         if (err)
2874                 netdev_err(rocker_port->dev, "Error (%d) ctrl term\n", err);
2875
2876         return err;
2877 }
2878
2879 static int rocker_port_ctrl_vlan(struct rocker_port *rocker_port, int flags,
2880                                  struct rocker_ctrl *ctrl, __be16 vlan_id)
2881 {
2882         if (ctrl->acl)
2883                 return rocker_port_ctrl_vlan_acl(rocker_port, flags,
2884                                                  ctrl, vlan_id);
2885         if (ctrl->bridge)
2886                 return rocker_port_ctrl_vlan_bridge(rocker_port, flags,
2887                                                     ctrl, vlan_id);
2888
2889         if (ctrl->term)
2890                 return rocker_port_ctrl_vlan_term(rocker_port, flags,
2891                                                   ctrl, vlan_id);
2892
2893         return -EOPNOTSUPP;
2894 }
2895
2896 static int rocker_port_ctrl_vlan_add(struct rocker_port *rocker_port,
2897                                      int flags, __be16 vlan_id)
2898 {
2899         int err = 0;
2900         int i;
2901
2902         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
2903                 if (rocker_port->ctrls[i]) {
2904                         err = rocker_port_ctrl_vlan(rocker_port, flags,
2905                                                     &rocker_ctrls[i], vlan_id);
2906                         if (err)
2907                                 return err;
2908                 }
2909         }
2910
2911         return err;
2912 }
2913
2914 static int rocker_port_ctrl(struct rocker_port *rocker_port, int flags,
2915                             struct rocker_ctrl *ctrl)
2916 {
2917         u16 vid;
2918         int err = 0;
2919
2920         for (vid = 1; vid < VLAN_N_VID; vid++) {
2921                 if (!test_bit(vid, rocker_port->vlan_bitmap))
2922                         continue;
2923                 err = rocker_port_ctrl_vlan(rocker_port, flags,
2924                                             ctrl, htons(vid));
2925                 if (err)
2926                         break;
2927         }
2928
2929         return err;
2930 }
2931
2932 static int rocker_port_vlan(struct rocker_port *rocker_port, int flags,
2933                             u16 vid)
2934 {
2935         enum rocker_of_dpa_table_id goto_tbl =
2936                 ROCKER_OF_DPA_TABLE_ID_TERMINATION_MAC;
2937         u32 in_lport = rocker_port->lport;
2938         __be16 vlan_id = htons(vid);
2939         __be16 vlan_id_mask = htons(0xffff);
2940         __be16 internal_vlan_id;
2941         bool untagged;
2942         bool adding = !(flags & ROCKER_OP_FLAG_REMOVE);
2943         int err;
2944
2945         internal_vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, &untagged);
2946
2947         if (adding && test_and_set_bit(ntohs(internal_vlan_id),
2948                                        rocker_port->vlan_bitmap))
2949                         return 0; /* already added */
2950         else if (!adding && !test_and_clear_bit(ntohs(internal_vlan_id),
2951                                                 rocker_port->vlan_bitmap))
2952                         return 0; /* already removed */
2953
2954         if (adding) {
2955                 err = rocker_port_ctrl_vlan_add(rocker_port, flags,
2956                                                 internal_vlan_id);
2957                 if (err) {
2958                         netdev_err(rocker_port->dev,
2959                                    "Error (%d) port ctrl vlan add\n", err);
2960                         return err;
2961                 }
2962         }
2963
2964         err = rocker_port_vlan_l2_groups(rocker_port, flags,
2965                                          internal_vlan_id, untagged);
2966         if (err) {
2967                 netdev_err(rocker_port->dev,
2968                            "Error (%d) port VLAN l2 groups\n", err);
2969                 return err;
2970         }
2971
2972         err = rocker_port_vlan_flood_group(rocker_port, flags,
2973                                            internal_vlan_id);
2974         if (err) {
2975                 netdev_err(rocker_port->dev,
2976                            "Error (%d) port VLAN l2 flood group\n", err);
2977                 return err;
2978         }
2979
2980         err = rocker_flow_tbl_vlan(rocker_port, flags,
2981                                    in_lport, vlan_id, vlan_id_mask,
2982                                    goto_tbl, untagged, internal_vlan_id);
2983         if (err)
2984                 netdev_err(rocker_port->dev,
2985                            "Error (%d) port VLAN table\n", err);
2986
2987         return err;
2988 }
2989
2990 static int rocker_port_ig_tbl(struct rocker_port *rocker_port, int flags)
2991 {
2992         enum rocker_of_dpa_table_id goto_tbl;
2993         u32 in_lport;
2994         u32 in_lport_mask;
2995         int err;
2996
2997         /* Normal Ethernet Frames.  Matches pkts from any local physical
2998          * ports.  Goto VLAN tbl.
2999          */
3000
3001         in_lport = 0;
3002         in_lport_mask = 0xffff0000;
3003         goto_tbl = ROCKER_OF_DPA_TABLE_ID_VLAN;
3004
3005         err = rocker_flow_tbl_ig_port(rocker_port, flags,
3006                                       in_lport, in_lport_mask,
3007                                       goto_tbl);
3008         if (err)
3009                 netdev_err(rocker_port->dev,
3010                            "Error (%d) ingress port table entry\n", err);
3011
3012         return err;
3013 }
3014
3015 struct rocker_fdb_learn_work {
3016         struct work_struct work;
3017         struct net_device *dev;
3018         int flags;
3019         u8 addr[ETH_ALEN];
3020         u16 vid;
3021 };
3022
3023 static void rocker_port_fdb_learn_work(struct work_struct *work)
3024 {
3025         struct rocker_fdb_learn_work *lw =
3026                 container_of(work, struct rocker_fdb_learn_work, work);
3027         bool removing = (lw->flags & ROCKER_OP_FLAG_REMOVE);
3028         bool learned = (lw->flags & ROCKER_OP_FLAG_LEARNED);
3029         struct netdev_switch_notifier_fdb_info info;
3030
3031         info.addr = lw->addr;
3032         info.vid = lw->vid;
3033
3034         if (learned && removing)
3035                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_DEL,
3036                                              lw->dev, &info.info);
3037         else if (learned && !removing)
3038                 call_netdev_switch_notifiers(NETDEV_SWITCH_FDB_ADD,
3039                                              lw->dev, &info.info);
3040
3041         kfree(work);
3042 }
3043
3044 static int rocker_port_fdb_learn(struct rocker_port *rocker_port,
3045                                  int flags, const u8 *addr, __be16 vlan_id)
3046 {
3047         struct rocker_fdb_learn_work *lw;
3048         enum rocker_of_dpa_table_id goto_tbl =
3049                 ROCKER_OF_DPA_TABLE_ID_ACL_POLICY;
3050         u32 out_lport = rocker_port->lport;
3051         u32 tunnel_id = 0;
3052         u32 group_id = ROCKER_GROUP_NONE;
3053         bool syncing = !!(rocker_port->brport_flags & BR_LEARNING_SYNC);
3054         bool copy_to_cpu = false;
3055         int err;
3056
3057         if (rocker_port_is_bridged(rocker_port))
3058                 group_id = ROCKER_GROUP_L2_INTERFACE(vlan_id, out_lport);
3059
3060         if (!(flags & ROCKER_OP_FLAG_REFRESH)) {
3061                 err = rocker_flow_tbl_bridge(rocker_port, flags, addr, NULL,
3062                                              vlan_id, tunnel_id, goto_tbl,
3063                                              group_id, copy_to_cpu);
3064                 if (err)
3065                         return err;
3066         }
3067
3068         if (!syncing)
3069                 return 0;
3070
3071         if (!rocker_port_is_bridged(rocker_port))
3072                 return 0;
3073
3074         lw = kmalloc(sizeof(*lw), rocker_op_flags_gfp(flags));
3075         if (!lw)
3076                 return -ENOMEM;
3077
3078         INIT_WORK(&lw->work, rocker_port_fdb_learn_work);
3079
3080         lw->dev = rocker_port->dev;
3081         lw->flags = flags;
3082         ether_addr_copy(lw->addr, addr);
3083         lw->vid = rocker_port_vlan_to_vid(rocker_port, vlan_id);
3084
3085         schedule_work(&lw->work);
3086
3087         return 0;
3088 }
3089
3090 static struct rocker_fdb_tbl_entry *
3091 rocker_fdb_tbl_find(struct rocker *rocker, struct rocker_fdb_tbl_entry *match)
3092 {
3093         struct rocker_fdb_tbl_entry *found;
3094
3095         hash_for_each_possible(rocker->fdb_tbl, found, entry, match->key_crc32)
3096                 if (memcmp(&found->key, &match->key, sizeof(found->key)) == 0)
3097                         return found;
3098
3099         return NULL;
3100 }
3101
3102 static int rocker_port_fdb(struct rocker_port *rocker_port,
3103                            const unsigned char *addr,
3104                            __be16 vlan_id, int flags)
3105 {
3106         struct rocker *rocker = rocker_port->rocker;
3107         struct rocker_fdb_tbl_entry *fdb;
3108         struct rocker_fdb_tbl_entry *found;
3109         bool removing = (flags & ROCKER_OP_FLAG_REMOVE);
3110         unsigned long lock_flags;
3111
3112         fdb = kzalloc(sizeof(*fdb), rocker_op_flags_gfp(flags));
3113         if (!fdb)
3114                 return -ENOMEM;
3115
3116         fdb->learned = (flags & ROCKER_OP_FLAG_LEARNED);
3117         fdb->key.lport = rocker_port->lport;
3118         ether_addr_copy(fdb->key.addr, addr);
3119         fdb->key.vlan_id = vlan_id;
3120         fdb->key_crc32 = crc32(~0, &fdb->key, sizeof(fdb->key));
3121
3122         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3123
3124         found = rocker_fdb_tbl_find(rocker, fdb);
3125
3126         if (removing && found) {
3127                 kfree(fdb);
3128                 hash_del(&found->entry);
3129         } else if (!removing && !found) {
3130                 hash_add(rocker->fdb_tbl, &fdb->entry, fdb->key_crc32);
3131         }
3132
3133         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3134
3135         /* Check if adding and already exists, or removing and can't find */
3136         if (!found != !removing) {
3137                 kfree(fdb);
3138                 if (!found && removing)
3139                         return 0;
3140                 /* Refreshing existing to update aging timers */
3141                 flags |= ROCKER_OP_FLAG_REFRESH;
3142         }
3143
3144         return rocker_port_fdb_learn(rocker_port, flags, addr, vlan_id);
3145 }
3146
3147 static int rocker_port_fdb_flush(struct rocker_port *rocker_port)
3148 {
3149         struct rocker *rocker = rocker_port->rocker;
3150         struct rocker_fdb_tbl_entry *found;
3151         unsigned long lock_flags;
3152         int flags = ROCKER_OP_FLAG_NOWAIT | ROCKER_OP_FLAG_REMOVE;
3153         struct hlist_node *tmp;
3154         int bkt;
3155         int err = 0;
3156
3157         if (rocker_port->stp_state == BR_STATE_LEARNING ||
3158             rocker_port->stp_state == BR_STATE_FORWARDING)
3159                 return 0;
3160
3161         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3162
3163         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3164                 if (found->key.lport != rocker_port->lport)
3165                         continue;
3166                 if (!found->learned)
3167                         continue;
3168                 err = rocker_port_fdb_learn(rocker_port, flags,
3169                                             found->key.addr,
3170                                             found->key.vlan_id);
3171                 if (err)
3172                         goto err_out;
3173                 hash_del(&found->entry);
3174         }
3175
3176 err_out:
3177         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3178
3179         return err;
3180 }
3181
3182 static int rocker_port_router_mac(struct rocker_port *rocker_port,
3183                                   int flags, __be16 vlan_id)
3184 {
3185         u32 in_lport_mask = 0xffffffff;
3186         __be16 eth_type;
3187         const u8 *dst_mac_mask = ff_mac;
3188         __be16 vlan_id_mask = htons(0xffff);
3189         bool copy_to_cpu = false;
3190         int err;
3191
3192         if (ntohs(vlan_id) == 0)
3193                 vlan_id = rocker_port->internal_vlan_id;
3194
3195         eth_type = htons(ETH_P_IP);
3196         err = rocker_flow_tbl_term_mac(rocker_port,
3197                                        rocker_port->lport, in_lport_mask,
3198                                        eth_type, rocker_port->dev->dev_addr,
3199                                        dst_mac_mask, vlan_id, vlan_id_mask,
3200                                        copy_to_cpu, flags);
3201         if (err)
3202                 return err;
3203
3204         eth_type = htons(ETH_P_IPV6);
3205         err = rocker_flow_tbl_term_mac(rocker_port,
3206                                        rocker_port->lport, in_lport_mask,
3207                                        eth_type, rocker_port->dev->dev_addr,
3208                                        dst_mac_mask, vlan_id, vlan_id_mask,
3209                                        copy_to_cpu, flags);
3210
3211         return err;
3212 }
3213
3214 static int rocker_port_fwding(struct rocker_port *rocker_port)
3215 {
3216         bool pop_vlan;
3217         u32 out_lport;
3218         __be16 vlan_id;
3219         u16 vid;
3220         int flags = ROCKER_OP_FLAG_NOWAIT;
3221         int err;
3222
3223         /* Port will be forwarding-enabled if its STP state is LEARNING
3224          * or FORWARDING.  Traffic from CPU can still egress, regardless of
3225          * port STP state.  Use L2 interface group on port VLANs as a way
3226          * to toggle port forwarding: if forwarding is disabled, L2
3227          * interface group will not exist.
3228          */
3229
3230         if (rocker_port->stp_state != BR_STATE_LEARNING &&
3231             rocker_port->stp_state != BR_STATE_FORWARDING)
3232                 flags |= ROCKER_OP_FLAG_REMOVE;
3233
3234         out_lport = rocker_port->lport;
3235         for (vid = 1; vid < VLAN_N_VID; vid++) {
3236                 if (!test_bit(vid, rocker_port->vlan_bitmap))
3237                         continue;
3238                 vlan_id = htons(vid);
3239                 pop_vlan = rocker_vlan_id_is_internal(vlan_id);
3240                 err = rocker_group_l2_interface(rocker_port, flags,
3241                                                 vlan_id, out_lport,
3242                                                 pop_vlan);
3243                 if (err) {
3244                         netdev_err(rocker_port->dev,
3245                                    "Error (%d) port VLAN l2 group for lport %d\n",
3246                                    err, out_lport);
3247                         return err;
3248                 }
3249         }
3250
3251         return 0;
3252 }
3253
3254 static int rocker_port_stp_update(struct rocker_port *rocker_port, u8 state)
3255 {
3256         bool want[ROCKER_CTRL_MAX] = { 0, };
3257         int flags;
3258         int err;
3259         int i;
3260
3261         if (rocker_port->stp_state == state)
3262                 return 0;
3263
3264         rocker_port->stp_state = state;
3265
3266         switch (state) {
3267         case BR_STATE_DISABLED:
3268                 /* port is completely disabled */
3269                 break;
3270         case BR_STATE_LISTENING:
3271         case BR_STATE_BLOCKING:
3272                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3273                 break;
3274         case BR_STATE_LEARNING:
3275         case BR_STATE_FORWARDING:
3276                 want[ROCKER_CTRL_LINK_LOCAL_MCAST] = true;
3277                 want[ROCKER_CTRL_IPV4_MCAST] = true;
3278                 want[ROCKER_CTRL_IPV6_MCAST] = true;
3279                 if (rocker_port_is_bridged(rocker_port))
3280                         want[ROCKER_CTRL_DFLT_BRIDGING] = true;
3281                 else
3282                         want[ROCKER_CTRL_LOCAL_ARP] = true;
3283                 break;
3284         }
3285
3286         for (i = 0; i < ROCKER_CTRL_MAX; i++) {
3287                 if (want[i] != rocker_port->ctrls[i]) {
3288                         flags = ROCKER_OP_FLAG_NOWAIT |
3289                                 (want[i] ? 0 : ROCKER_OP_FLAG_REMOVE);
3290                         err = rocker_port_ctrl(rocker_port, flags,
3291                                                &rocker_ctrls[i]);
3292                         if (err)
3293                                 return err;
3294                         rocker_port->ctrls[i] = want[i];
3295                 }
3296         }
3297
3298         err = rocker_port_fdb_flush(rocker_port);
3299         if (err)
3300                 return err;
3301
3302         return rocker_port_fwding(rocker_port);
3303 }
3304
3305 static struct rocker_internal_vlan_tbl_entry *
3306 rocker_internal_vlan_tbl_find(struct rocker *rocker, int ifindex)
3307 {
3308         struct rocker_internal_vlan_tbl_entry *found;
3309
3310         hash_for_each_possible(rocker->internal_vlan_tbl, found,
3311                                entry, ifindex) {
3312                 if (found->ifindex == ifindex)
3313                         return found;
3314         }
3315
3316         return NULL;
3317 }
3318
3319 static __be16 rocker_port_internal_vlan_id_get(struct rocker_port *rocker_port,
3320                                                int ifindex)
3321 {
3322         struct rocker *rocker = rocker_port->rocker;
3323         struct rocker_internal_vlan_tbl_entry *entry;
3324         struct rocker_internal_vlan_tbl_entry *found;
3325         unsigned long lock_flags;
3326         int i;
3327
3328         entry = kzalloc(sizeof(*entry), GFP_KERNEL);
3329         if (!entry)
3330                 return 0;
3331
3332         entry->ifindex = ifindex;
3333
3334         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3335
3336         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3337         if (found) {
3338                 kfree(entry);
3339                 goto found;
3340         }
3341
3342         found = entry;
3343         hash_add(rocker->internal_vlan_tbl, &found->entry, found->ifindex);
3344
3345         for (i = 0; i < ROCKER_N_INTERNAL_VLANS; i++) {
3346                 if (test_and_set_bit(i, rocker->internal_vlan_bitmap))
3347                         continue;
3348                 found->vlan_id = htons(ROCKER_INTERNAL_VLAN_ID_BASE + i);
3349                 goto found;
3350         }
3351
3352         netdev_err(rocker_port->dev, "Out of internal VLAN IDs\n");
3353
3354 found:
3355         found->ref_count++;
3356         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3357
3358         return found->vlan_id;
3359 }
3360
3361 static void rocker_port_internal_vlan_id_put(struct rocker_port *rocker_port,
3362                                              int ifindex)
3363 {
3364         struct rocker *rocker = rocker_port->rocker;
3365         struct rocker_internal_vlan_tbl_entry *found;
3366         unsigned long lock_flags;
3367         unsigned long bit;
3368
3369         spin_lock_irqsave(&rocker->internal_vlan_tbl_lock, lock_flags);
3370
3371         found = rocker_internal_vlan_tbl_find(rocker, ifindex);
3372         if (!found) {
3373                 netdev_err(rocker_port->dev,
3374                            "ifindex (%d) not found in internal VLAN tbl\n",
3375                            ifindex);
3376                 goto not_found;
3377         }
3378
3379         if (--found->ref_count <= 0) {
3380                 bit = ntohs(found->vlan_id) - ROCKER_INTERNAL_VLAN_ID_BASE;
3381                 clear_bit(bit, rocker->internal_vlan_bitmap);
3382                 hash_del(&found->entry);
3383                 kfree(found);
3384         }
3385
3386 not_found:
3387         spin_unlock_irqrestore(&rocker->internal_vlan_tbl_lock, lock_flags);
3388 }
3389
3390 /*****************
3391  * Net device ops
3392  *****************/
3393
3394 static int rocker_port_open(struct net_device *dev)
3395 {
3396         struct rocker_port *rocker_port = netdev_priv(dev);
3397         u8 stp_state = rocker_port_is_bridged(rocker_port) ?
3398                 BR_STATE_BLOCKING : BR_STATE_FORWARDING;
3399         int err;
3400
3401         err = rocker_port_dma_rings_init(rocker_port);
3402         if (err)
3403                 return err;
3404
3405         err = request_irq(rocker_msix_tx_vector(rocker_port),
3406                           rocker_tx_irq_handler, 0,
3407                           rocker_driver_name, rocker_port);
3408         if (err) {
3409                 netdev_err(rocker_port->dev, "cannot assign tx irq\n");
3410                 goto err_request_tx_irq;
3411         }
3412
3413         err = request_irq(rocker_msix_rx_vector(rocker_port),
3414                           rocker_rx_irq_handler, 0,
3415                           rocker_driver_name, rocker_port);
3416         if (err) {
3417                 netdev_err(rocker_port->dev, "cannot assign rx irq\n");
3418                 goto err_request_rx_irq;
3419         }
3420
3421         err = rocker_port_stp_update(rocker_port, stp_state);
3422         if (err)
3423                 goto err_stp_update;
3424
3425         napi_enable(&rocker_port->napi_tx);
3426         napi_enable(&rocker_port->napi_rx);
3427         rocker_port_set_enable(rocker_port, true);
3428         netif_start_queue(dev);
3429         return 0;
3430
3431 err_stp_update:
3432         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3433 err_request_rx_irq:
3434         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3435 err_request_tx_irq:
3436         rocker_port_dma_rings_fini(rocker_port);
3437         return err;
3438 }
3439
3440 static int rocker_port_stop(struct net_device *dev)
3441 {
3442         struct rocker_port *rocker_port = netdev_priv(dev);
3443
3444         netif_stop_queue(dev);
3445         rocker_port_set_enable(rocker_port, false);
3446         napi_disable(&rocker_port->napi_rx);
3447         napi_disable(&rocker_port->napi_tx);
3448         rocker_port_stp_update(rocker_port, BR_STATE_DISABLED);
3449         free_irq(rocker_msix_rx_vector(rocker_port), rocker_port);
3450         free_irq(rocker_msix_tx_vector(rocker_port), rocker_port);
3451         rocker_port_dma_rings_fini(rocker_port);
3452
3453         return 0;
3454 }
3455
3456 static void rocker_tx_desc_frags_unmap(struct rocker_port *rocker_port,
3457                                        struct rocker_desc_info *desc_info)
3458 {
3459         struct rocker *rocker = rocker_port->rocker;
3460         struct pci_dev *pdev = rocker->pdev;
3461         struct rocker_tlv *attrs[ROCKER_TLV_TX_MAX + 1];
3462         struct rocker_tlv *attr;
3463         int rem;
3464
3465         rocker_tlv_parse_desc(attrs, ROCKER_TLV_TX_MAX, desc_info);
3466         if (!attrs[ROCKER_TLV_TX_FRAGS])
3467                 return;
3468         rocker_tlv_for_each_nested(attr, attrs[ROCKER_TLV_TX_FRAGS], rem) {
3469                 struct rocker_tlv *frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_MAX + 1];
3470                 dma_addr_t dma_handle;
3471                 size_t len;
3472
3473                 if (rocker_tlv_type(attr) != ROCKER_TLV_TX_FRAG)
3474                         continue;
3475                 rocker_tlv_parse_nested(frag_attrs, ROCKER_TLV_TX_FRAG_ATTR_MAX,
3476                                         attr);
3477                 if (!frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR] ||
3478                     !frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN])
3479                         continue;
3480                 dma_handle = rocker_tlv_get_u64(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_ADDR]);
3481                 len = rocker_tlv_get_u16(frag_attrs[ROCKER_TLV_TX_FRAG_ATTR_LEN]);
3482                 pci_unmap_single(pdev, dma_handle, len, DMA_TO_DEVICE);
3483         }
3484 }
3485
3486 static int rocker_tx_desc_frag_map_put(struct rocker_port *rocker_port,
3487                                        struct rocker_desc_info *desc_info,
3488                                        char *buf, size_t buf_len)
3489 {
3490         struct rocker *rocker = rocker_port->rocker;
3491         struct pci_dev *pdev = rocker->pdev;
3492         dma_addr_t dma_handle;
3493         struct rocker_tlv *frag;
3494
3495         dma_handle = pci_map_single(pdev, buf, buf_len, DMA_TO_DEVICE);
3496         if (unlikely(pci_dma_mapping_error(pdev, dma_handle))) {
3497                 if (net_ratelimit())
3498                         netdev_err(rocker_port->dev, "failed to dma map tx frag\n");
3499                 return -EIO;
3500         }
3501         frag = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAG);
3502         if (!frag)
3503                 goto unmap_frag;
3504         if (rocker_tlv_put_u64(desc_info, ROCKER_TLV_TX_FRAG_ATTR_ADDR,
3505                                dma_handle))
3506                 goto nest_cancel;
3507         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_TX_FRAG_ATTR_LEN,
3508                                buf_len))
3509                 goto nest_cancel;
3510         rocker_tlv_nest_end(desc_info, frag);
3511         return 0;
3512
3513 nest_cancel:
3514         rocker_tlv_nest_cancel(desc_info, frag);
3515 unmap_frag:
3516         pci_unmap_single(pdev, dma_handle, buf_len, DMA_TO_DEVICE);
3517         return -EMSGSIZE;
3518 }
3519
3520 static netdev_tx_t rocker_port_xmit(struct sk_buff *skb, struct net_device *dev)
3521 {
3522         struct rocker_port *rocker_port = netdev_priv(dev);
3523         struct rocker *rocker = rocker_port->rocker;
3524         struct rocker_desc_info *desc_info;
3525         struct rocker_tlv *frags;
3526         int i;
3527         int err;
3528
3529         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3530         if (unlikely(!desc_info)) {
3531                 if (net_ratelimit())
3532                         netdev_err(dev, "tx ring full when queue awake\n");
3533                 return NETDEV_TX_BUSY;
3534         }
3535
3536         rocker_desc_cookie_ptr_set(desc_info, skb);
3537
3538         frags = rocker_tlv_nest_start(desc_info, ROCKER_TLV_TX_FRAGS);
3539         if (!frags)
3540                 goto out;
3541         err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3542                                           skb->data, skb_headlen(skb));
3543         if (err)
3544                 goto nest_cancel;
3545         if (skb_shinfo(skb)->nr_frags > ROCKER_TX_FRAGS_MAX)
3546                 goto nest_cancel;
3547
3548         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3549                 const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3550
3551                 err = rocker_tx_desc_frag_map_put(rocker_port, desc_info,
3552                                                   skb_frag_address(frag),
3553                                                   skb_frag_size(frag));
3554                 if (err)
3555                         goto unmap_frags;
3556         }
3557         rocker_tlv_nest_end(desc_info, frags);
3558
3559         rocker_desc_gen_clear(desc_info);
3560         rocker_desc_head_set(rocker, &rocker_port->tx_ring, desc_info);
3561
3562         desc_info = rocker_desc_head_get(&rocker_port->tx_ring);
3563         if (!desc_info)
3564                 netif_stop_queue(dev);
3565
3566         return NETDEV_TX_OK;
3567
3568 unmap_frags:
3569         rocker_tx_desc_frags_unmap(rocker_port, desc_info);
3570 nest_cancel:
3571         rocker_tlv_nest_cancel(desc_info, frags);
3572 out:
3573         dev_kfree_skb(skb);
3574         dev->stats.tx_dropped++;
3575
3576         return NETDEV_TX_OK;
3577 }
3578
3579 static int rocker_port_set_mac_address(struct net_device *dev, void *p)
3580 {
3581         struct sockaddr *addr = p;
3582         struct rocker_port *rocker_port = netdev_priv(dev);
3583         int err;
3584
3585         if (!is_valid_ether_addr(addr->sa_data))
3586                 return -EADDRNOTAVAIL;
3587
3588         err = rocker_cmd_set_port_settings_macaddr(rocker_port, addr->sa_data);
3589         if (err)
3590                 return err;
3591         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3592         return 0;
3593 }
3594
3595 static int rocker_port_vlan_rx_add_vid(struct net_device *dev,
3596                                        __be16 proto, u16 vid)
3597 {
3598         struct rocker_port *rocker_port = netdev_priv(dev);
3599         int err;
3600
3601         err = rocker_port_vlan(rocker_port, 0, vid);
3602         if (err)
3603                 return err;
3604
3605         return rocker_port_router_mac(rocker_port, 0, htons(vid));
3606 }
3607
3608 static int rocker_port_vlan_rx_kill_vid(struct net_device *dev,
3609                                         __be16 proto, u16 vid)
3610 {
3611         struct rocker_port *rocker_port = netdev_priv(dev);
3612         int err;
3613
3614         err = rocker_port_router_mac(rocker_port, ROCKER_OP_FLAG_REMOVE,
3615                                      htons(vid));
3616         if (err)
3617                 return err;
3618
3619         return rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, vid);
3620 }
3621
3622 static int rocker_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
3623                                struct net_device *dev,
3624                                const unsigned char *addr, u16 vid,
3625                                u16 nlm_flags)
3626 {
3627         struct rocker_port *rocker_port = netdev_priv(dev);
3628         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3629         int flags = 0;
3630
3631         if (!rocker_port_is_bridged(rocker_port))
3632                 return -EINVAL;
3633
3634         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3635 }
3636
3637 static int rocker_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
3638                                struct net_device *dev,
3639                                const unsigned char *addr, u16 vid)
3640 {
3641         struct rocker_port *rocker_port = netdev_priv(dev);
3642         __be16 vlan_id = rocker_port_vid_to_vlan(rocker_port, vid, NULL);
3643         int flags = ROCKER_OP_FLAG_REMOVE;
3644
3645         if (!rocker_port_is_bridged(rocker_port))
3646                 return -EINVAL;
3647
3648         return rocker_port_fdb(rocker_port, addr, vlan_id, flags);
3649 }
3650
3651 static int rocker_fdb_fill_info(struct sk_buff *skb,
3652                                 struct rocker_port *rocker_port,
3653                                 const unsigned char *addr, u16 vid,
3654                                 u32 portid, u32 seq, int type,
3655                                 unsigned int flags)
3656 {
3657         struct nlmsghdr *nlh;
3658         struct ndmsg *ndm;
3659
3660         nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
3661         if (!nlh)
3662                 return -EMSGSIZE;
3663
3664         ndm = nlmsg_data(nlh);
3665         ndm->ndm_family  = AF_BRIDGE;
3666         ndm->ndm_pad1    = 0;
3667         ndm->ndm_pad2    = 0;
3668         ndm->ndm_flags   = NTF_SELF;
3669         ndm->ndm_type    = 0;
3670         ndm->ndm_ifindex = rocker_port->dev->ifindex;
3671         ndm->ndm_state   = NUD_REACHABLE;
3672
3673         if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
3674                 goto nla_put_failure;
3675
3676         if (vid && nla_put_u16(skb, NDA_VLAN, vid))
3677                 goto nla_put_failure;
3678
3679         nlmsg_end(skb, nlh);
3680         return 0;
3681
3682 nla_put_failure:
3683         nlmsg_cancel(skb, nlh);
3684         return -EMSGSIZE;
3685 }
3686
3687 static int rocker_port_fdb_dump(struct sk_buff *skb,
3688                                 struct netlink_callback *cb,
3689                                 struct net_device *dev,
3690                                 struct net_device *filter_dev,
3691                                 int idx)
3692 {
3693         struct rocker_port *rocker_port = netdev_priv(dev);
3694         struct rocker *rocker = rocker_port->rocker;
3695         struct rocker_fdb_tbl_entry *found;
3696         struct hlist_node *tmp;
3697         int bkt;
3698         unsigned long lock_flags;
3699         const unsigned char *addr;
3700         u16 vid;
3701         int err;
3702
3703         spin_lock_irqsave(&rocker->fdb_tbl_lock, lock_flags);
3704         hash_for_each_safe(rocker->fdb_tbl, bkt, tmp, found, entry) {
3705                 if (found->key.lport != rocker_port->lport)
3706                         continue;
3707                 if (idx < cb->args[0])
3708                         goto skip;
3709                 addr = found->key.addr;
3710                 vid = rocker_port_vlan_to_vid(rocker_port, found->key.vlan_id);
3711                 err = rocker_fdb_fill_info(skb, rocker_port, addr, vid,
3712                                            NETLINK_CB(cb->skb).portid,
3713                                            cb->nlh->nlmsg_seq,
3714                                            RTM_NEWNEIGH, NLM_F_MULTI);
3715                 if (err < 0)
3716                         break;
3717 skip:
3718                 ++idx;
3719         }
3720         spin_unlock_irqrestore(&rocker->fdb_tbl_lock, lock_flags);
3721         return idx;
3722 }
3723
3724 static int rocker_port_bridge_setlink(struct net_device *dev,
3725                                       struct nlmsghdr *nlh, u16 flags)
3726 {
3727         struct rocker_port *rocker_port = netdev_priv(dev);
3728         struct nlattr *protinfo;
3729         struct nlattr *attr;
3730         int err;
3731
3732         protinfo = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg),
3733                                    IFLA_PROTINFO);
3734         if (protinfo) {
3735                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING);
3736                 if (attr) {
3737                         if (nla_len(attr) < sizeof(u8))
3738                                 return -EINVAL;
3739
3740                         if (nla_get_u8(attr))
3741                                 rocker_port->brport_flags |= BR_LEARNING;
3742                         else
3743                                 rocker_port->brport_flags &= ~BR_LEARNING;
3744                         err = rocker_port_set_learning(rocker_port);
3745                         if (err)
3746                                 return err;
3747                 }
3748                 attr = nla_find_nested(protinfo, IFLA_BRPORT_LEARNING_SYNC);
3749                 if (attr) {
3750                         if (nla_len(attr) < sizeof(u8))
3751                                 return -EINVAL;
3752
3753                         if (nla_get_u8(attr))
3754                                 rocker_port->brport_flags |= BR_LEARNING_SYNC;
3755                         else
3756                                 rocker_port->brport_flags &= ~BR_LEARNING_SYNC;
3757                 }
3758         }
3759
3760         return 0;
3761 }
3762
3763 static int rocker_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
3764                                       struct net_device *dev,
3765                                       u32 filter_mask)
3766 {
3767         struct rocker_port *rocker_port = netdev_priv(dev);
3768         u16 mode = BRIDGE_MODE_UNDEF;
3769         u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
3770
3771         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
3772                                        rocker_port->brport_flags, mask);
3773 }
3774
3775 static int rocker_port_switch_parent_id_get(struct net_device *dev,
3776                                             struct netdev_phys_item_id *psid)
3777 {
3778         struct rocker_port *rocker_port = netdev_priv(dev);
3779         struct rocker *rocker = rocker_port->rocker;
3780
3781         psid->id_len = sizeof(rocker->hw.id);
3782         memcpy(&psid->id, &rocker->hw.id, psid->id_len);
3783         return 0;
3784 }
3785
3786 static int rocker_port_switch_port_stp_update(struct net_device *dev, u8 state)
3787 {
3788         struct rocker_port *rocker_port = netdev_priv(dev);
3789
3790         return rocker_port_stp_update(rocker_port, state);
3791 }
3792
3793 static const struct net_device_ops rocker_port_netdev_ops = {
3794         .ndo_open                       = rocker_port_open,
3795         .ndo_stop                       = rocker_port_stop,
3796         .ndo_start_xmit                 = rocker_port_xmit,
3797         .ndo_set_mac_address            = rocker_port_set_mac_address,
3798         .ndo_vlan_rx_add_vid            = rocker_port_vlan_rx_add_vid,
3799         .ndo_vlan_rx_kill_vid           = rocker_port_vlan_rx_kill_vid,
3800         .ndo_fdb_add                    = rocker_port_fdb_add,
3801         .ndo_fdb_del                    = rocker_port_fdb_del,
3802         .ndo_fdb_dump                   = rocker_port_fdb_dump,
3803         .ndo_bridge_setlink             = rocker_port_bridge_setlink,
3804         .ndo_bridge_getlink             = rocker_port_bridge_getlink,
3805         .ndo_switch_parent_id_get       = rocker_port_switch_parent_id_get,
3806         .ndo_switch_port_stp_update     = rocker_port_switch_port_stp_update,
3807 };
3808
3809 /********************
3810  * ethtool interface
3811  ********************/
3812
3813 static int rocker_port_get_settings(struct net_device *dev,
3814                                     struct ethtool_cmd *ecmd)
3815 {
3816         struct rocker_port *rocker_port = netdev_priv(dev);
3817
3818         return rocker_cmd_get_port_settings_ethtool(rocker_port, ecmd);
3819 }
3820
3821 static int rocker_port_set_settings(struct net_device *dev,
3822                                     struct ethtool_cmd *ecmd)
3823 {
3824         struct rocker_port *rocker_port = netdev_priv(dev);
3825
3826         return rocker_cmd_set_port_settings_ethtool(rocker_port, ecmd);
3827 }
3828
3829 static void rocker_port_get_drvinfo(struct net_device *dev,
3830                                     struct ethtool_drvinfo *drvinfo)
3831 {
3832         strlcpy(drvinfo->driver, rocker_driver_name, sizeof(drvinfo->driver));
3833         strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
3834 }
3835
3836 static struct rocker_port_stats {
3837         char str[ETH_GSTRING_LEN];
3838         int type;
3839 } rocker_port_stats[] = {
3840         { "rx_packets", ROCKER_TLV_CMD_PORT_STATS_RX_PKTS,    },
3841         { "rx_bytes",   ROCKER_TLV_CMD_PORT_STATS_RX_BYTES,   },
3842         { "rx_dropped", ROCKER_TLV_CMD_PORT_STATS_RX_DROPPED, },
3843         { "rx_errors",  ROCKER_TLV_CMD_PORT_STATS_RX_ERRORS,  },
3844
3845         { "tx_packets", ROCKER_TLV_CMD_PORT_STATS_TX_PKTS,    },
3846         { "tx_bytes",   ROCKER_TLV_CMD_PORT_STATS_TX_BYTES,   },
3847         { "tx_dropped", ROCKER_TLV_CMD_PORT_STATS_TX_DROPPED, },
3848         { "tx_errors",  ROCKER_TLV_CMD_PORT_STATS_TX_ERRORS,  },
3849 };
3850
3851 #define ROCKER_PORT_STATS_LEN  ARRAY_SIZE(rocker_port_stats)
3852
3853 static void rocker_port_get_strings(struct net_device *netdev, u32 stringset,
3854                                     u8 *data)
3855 {
3856         u8 *p = data;
3857         int i;
3858
3859         switch (stringset) {
3860         case ETH_SS_STATS:
3861                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
3862                         memcpy(p, rocker_port_stats[i].str, ETH_GSTRING_LEN);
3863                         p += ETH_GSTRING_LEN;
3864                 }
3865                 break;
3866         }
3867 }
3868
3869 static int
3870 rocker_cmd_get_port_stats_prep(struct rocker *rocker,
3871                                struct rocker_port *rocker_port,
3872                                struct rocker_desc_info *desc_info,
3873                                void *priv)
3874 {
3875         struct rocker_tlv *cmd_stats;
3876
3877         if (rocker_tlv_put_u16(desc_info, ROCKER_TLV_CMD_TYPE,
3878                                ROCKER_TLV_CMD_TYPE_GET_PORT_STATS))
3879                 return -EMSGSIZE;
3880
3881         cmd_stats = rocker_tlv_nest_start(desc_info, ROCKER_TLV_CMD_INFO);
3882         if (!cmd_stats)
3883                 return -EMSGSIZE;
3884
3885         if (rocker_tlv_put_u32(desc_info, ROCKER_TLV_CMD_PORT_STATS_LPORT,
3886                                rocker_port->lport))
3887                 return -EMSGSIZE;
3888
3889         rocker_tlv_nest_end(desc_info, cmd_stats);
3890
3891         return 0;
3892 }
3893
3894 static int
3895 rocker_cmd_get_port_stats_ethtool_proc(struct rocker *rocker,
3896                                        struct rocker_port *rocker_port,
3897                                        struct rocker_desc_info *desc_info,
3898                                        void *priv)
3899 {
3900         struct rocker_tlv *attrs[ROCKER_TLV_CMD_MAX + 1];
3901         struct rocker_tlv *stats_attrs[ROCKER_TLV_CMD_PORT_STATS_MAX + 1];
3902         struct rocker_tlv *pattr;
3903         u32 lport;
3904         u64 *data = priv;
3905         int i;
3906
3907         rocker_tlv_parse_desc(attrs, ROCKER_TLV_CMD_MAX, desc_info);
3908
3909         if (!attrs[ROCKER_TLV_CMD_INFO])
3910                 return -EIO;
3911
3912         rocker_tlv_parse_nested(stats_attrs, ROCKER_TLV_CMD_PORT_STATS_MAX,
3913                                 attrs[ROCKER_TLV_CMD_INFO]);
3914
3915         if (!stats_attrs[ROCKER_TLV_CMD_PORT_STATS_LPORT])
3916                 return -EIO;
3917
3918         lport = rocker_tlv_get_u32(stats_attrs[ROCKER_TLV_CMD_PORT_STATS_LPORT]);
3919         if (lport != rocker_port->lport)
3920                 return -EIO;
3921
3922         for (i = 0; i < ARRAY_SIZE(rocker_port_stats); i++) {
3923                 pattr = stats_attrs[rocker_port_stats[i].type];
3924                 if (!pattr)
3925                         continue;
3926
3927                 data[i] = rocker_tlv_get_u64(pattr);
3928         }
3929
3930         return 0;
3931 }
3932
3933 static int rocker_cmd_get_port_stats_ethtool(struct rocker_port *rocker_port,
3934                                              void *priv)
3935 {
3936         return rocker_cmd_exec(rocker_port->rocker, rocker_port,
3937                                rocker_cmd_get_port_stats_prep, NULL,
3938                                rocker_cmd_get_port_stats_ethtool_proc,
3939                                priv, false);
3940 }
3941
3942 static void rocker_port_get_stats(struct net_device *dev,
3943                                   struct ethtool_stats *stats, u64 *data)
3944 {
3945         struct rocker_port *rocker_port = netdev_priv(dev);
3946
3947         if (rocker_cmd_get_port_stats_ethtool(rocker_port, data) != 0) {
3948                 int i;
3949
3950                 for (i = 0; i < ARRAY_SIZE(rocker_port_stats); ++i)
3951                         data[i] = 0;
3952         }
3953
3954         return;
3955 }
3956
3957 static int rocker_port_get_sset_count(struct net_device *netdev, int sset)
3958 {
3959         switch (sset) {
3960         case ETH_SS_STATS:
3961                 return ROCKER_PORT_STATS_LEN;
3962         default:
3963                 return -EOPNOTSUPP;
3964         }
3965 }
3966
3967 static const struct ethtool_ops rocker_port_ethtool_ops = {
3968         .get_settings           = rocker_port_get_settings,
3969         .set_settings           = rocker_port_set_settings,
3970         .get_drvinfo            = rocker_port_get_drvinfo,
3971         .get_link               = ethtool_op_get_link,
3972         .get_strings            = rocker_port_get_strings,
3973         .get_ethtool_stats      = rocker_port_get_stats,
3974         .get_sset_count         = rocker_port_get_sset_count,
3975 };
3976
3977 /*****************
3978  * NAPI interface
3979  *****************/
3980
3981 static struct rocker_port *rocker_port_napi_tx_get(struct napi_struct *napi)
3982 {
3983         return container_of(napi, struct rocker_port, napi_tx);
3984 }
3985
3986 static int rocker_port_poll_tx(struct napi_struct *napi, int budget)
3987 {
3988         struct rocker_port *rocker_port = rocker_port_napi_tx_get(napi);
3989         struct rocker *rocker = rocker_port->rocker;
3990         struct rocker_desc_info *desc_info;
3991         u32 credits = 0;
3992         int err;
3993
3994         /* Cleanup tx descriptors */
3995         while ((desc_info = rocker_desc_tail_get(&rocker_port->tx_ring))) {
3996                 struct sk_buff *skb;
3997
3998                 err = rocker_desc_err(desc_info);
3999                 if (err && net_ratelimit())
4000                         netdev_err(rocker_port->dev, "tx desc received with err %d\n",
4001                                    err);
4002                 rocker_tx_desc_frags_unmap(rocker_port, desc_info);
4003
4004                 skb = rocker_desc_cookie_ptr_get(desc_info);
4005                 if (err == 0) {
4006                         rocker_port->dev->stats.tx_packets++;
4007                         rocker_port->dev->stats.tx_bytes += skb->len;
4008                 } else
4009                         rocker_port->dev->stats.tx_errors++;
4010
4011                 dev_kfree_skb_any(skb);
4012                 credits++;
4013         }
4014
4015         if (credits && netif_queue_stopped(rocker_port->dev))
4016                 netif_wake_queue(rocker_port->dev);
4017
4018         napi_complete(napi);
4019         rocker_dma_ring_credits_set(rocker, &rocker_port->tx_ring, credits);
4020
4021         return 0;
4022 }
4023
4024 static int rocker_port_rx_proc(struct rocker *rocker,
4025                                struct rocker_port *rocker_port,
4026                                struct rocker_desc_info *desc_info)
4027 {
4028         struct rocker_tlv *attrs[ROCKER_TLV_RX_MAX + 1];
4029         struct sk_buff *skb = rocker_desc_cookie_ptr_get(desc_info);
4030         size_t rx_len;
4031
4032         if (!skb)
4033                 return -ENOENT;
4034
4035         rocker_tlv_parse_desc(attrs, ROCKER_TLV_RX_MAX, desc_info);
4036         if (!attrs[ROCKER_TLV_RX_FRAG_LEN])
4037                 return -EINVAL;
4038
4039         rocker_dma_rx_ring_skb_unmap(rocker, attrs);
4040
4041         rx_len = rocker_tlv_get_u16(attrs[ROCKER_TLV_RX_FRAG_LEN]);
4042         skb_put(skb, rx_len);
4043         skb->protocol = eth_type_trans(skb, rocker_port->dev);
4044
4045         rocker_port->dev->stats.rx_packets++;
4046         rocker_port->dev->stats.rx_bytes += skb->len;
4047
4048         netif_receive_skb(skb);
4049
4050         return rocker_dma_rx_ring_skb_alloc(rocker, rocker_port, desc_info);
4051 }
4052
4053 static struct rocker_port *rocker_port_napi_rx_get(struct napi_struct *napi)
4054 {
4055         return container_of(napi, struct rocker_port, napi_rx);
4056 }
4057
4058 static int rocker_port_poll_rx(struct napi_struct *napi, int budget)
4059 {
4060         struct rocker_port *rocker_port = rocker_port_napi_rx_get(napi);
4061         struct rocker *rocker = rocker_port->rocker;
4062         struct rocker_desc_info *desc_info;
4063         u32 credits = 0;
4064         int err;
4065
4066         /* Process rx descriptors */
4067         while (credits < budget &&
4068                (desc_info = rocker_desc_tail_get(&rocker_port->rx_ring))) {
4069                 err = rocker_desc_err(desc_info);
4070                 if (err) {
4071                         if (net_ratelimit())
4072                                 netdev_err(rocker_port->dev, "rx desc received with err %d\n",
4073                                            err);
4074                 } else {
4075                         err = rocker_port_rx_proc(rocker, rocker_port,
4076                                                   desc_info);
4077                         if (err && net_ratelimit())
4078                                 netdev_err(rocker_port->dev, "rx processing failed with err %d\n",
4079                                            err);
4080                 }
4081                 if (err)
4082                         rocker_port->dev->stats.rx_errors++;
4083
4084                 rocker_desc_gen_clear(desc_info);
4085                 rocker_desc_head_set(rocker, &rocker_port->rx_ring, desc_info);
4086                 credits++;
4087         }
4088
4089         if (credits < budget)
4090                 napi_complete(napi);
4091
4092         rocker_dma_ring_credits_set(rocker, &rocker_port->rx_ring, credits);
4093
4094         return credits;
4095 }
4096
4097 /*****************
4098  * PCI driver ops
4099  *****************/
4100
4101 static void rocker_carrier_init(struct rocker_port *rocker_port)
4102 {
4103         struct rocker *rocker = rocker_port->rocker;
4104         u64 link_status = rocker_read64(rocker, PORT_PHYS_LINK_STATUS);
4105         bool link_up;
4106
4107         link_up = link_status & (1 << rocker_port->lport);
4108         if (link_up)
4109                 netif_carrier_on(rocker_port->dev);
4110         else
4111                 netif_carrier_off(rocker_port->dev);
4112 }
4113
4114 static void rocker_remove_ports(struct rocker *rocker)
4115 {
4116         struct rocker_port *rocker_port;
4117         int i;
4118
4119         for (i = 0; i < rocker->port_count; i++) {
4120                 rocker_port = rocker->ports[i];
4121                 rocker_port_ig_tbl(rocker_port, ROCKER_OP_FLAG_REMOVE);
4122                 unregister_netdev(rocker_port->dev);
4123         }
4124         kfree(rocker->ports);
4125 }
4126
4127 static void rocker_port_dev_addr_init(struct rocker *rocker,
4128                                       struct rocker_port *rocker_port)
4129 {
4130         struct pci_dev *pdev = rocker->pdev;
4131         int err;
4132
4133         err = rocker_cmd_get_port_settings_macaddr(rocker_port,
4134                                                    rocker_port->dev->dev_addr);
4135         if (err) {
4136                 dev_warn(&pdev->dev, "failed to get mac address, using random\n");
4137                 eth_hw_addr_random(rocker_port->dev);
4138         }
4139 }
4140
4141 static int rocker_probe_port(struct rocker *rocker, unsigned int port_number)
4142 {
4143         struct pci_dev *pdev = rocker->pdev;
4144         struct rocker_port *rocker_port;
4145         struct net_device *dev;
4146         int err;
4147
4148         dev = alloc_etherdev(sizeof(struct rocker_port));
4149         if (!dev)
4150                 return -ENOMEM;
4151         rocker_port = netdev_priv(dev);
4152         rocker_port->dev = dev;
4153         rocker_port->rocker = rocker;
4154         rocker_port->port_number = port_number;
4155         rocker_port->lport = port_number + 1;
4156         rocker_port->brport_flags = BR_LEARNING | BR_LEARNING_SYNC;
4157
4158         rocker_port_dev_addr_init(rocker, rocker_port);
4159         dev->netdev_ops = &rocker_port_netdev_ops;
4160         dev->ethtool_ops = &rocker_port_ethtool_ops;
4161         netif_napi_add(dev, &rocker_port->napi_tx, rocker_port_poll_tx,
4162                        NAPI_POLL_WEIGHT);
4163         netif_napi_add(dev, &rocker_port->napi_rx, rocker_port_poll_rx,
4164                        NAPI_POLL_WEIGHT);
4165         rocker_carrier_init(rocker_port);
4166
4167         dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
4168                                 NETIF_F_HW_SWITCH_OFFLOAD;
4169
4170         err = register_netdev(dev);
4171         if (err) {
4172                 dev_err(&pdev->dev, "register_netdev failed\n");
4173                 goto err_register_netdev;
4174         }
4175         rocker->ports[port_number] = rocker_port;
4176
4177         rocker_port_set_learning(rocker_port);
4178
4179         rocker_port->internal_vlan_id =
4180                 rocker_port_internal_vlan_id_get(rocker_port, dev->ifindex);
4181         err = rocker_port_ig_tbl(rocker_port, 0);
4182         if (err) {
4183                 dev_err(&pdev->dev, "install ig port table failed\n");
4184                 goto err_port_ig_tbl;
4185         }
4186
4187         return 0;
4188
4189 err_port_ig_tbl:
4190         unregister_netdev(dev);
4191 err_register_netdev:
4192         free_netdev(dev);
4193         return err;
4194 }
4195
4196 static int rocker_probe_ports(struct rocker *rocker)
4197 {
4198         int i;
4199         size_t alloc_size;
4200         int err;
4201
4202         alloc_size = sizeof(struct rocker_port *) * rocker->port_count;
4203         rocker->ports = kmalloc(alloc_size, GFP_KERNEL);
4204         for (i = 0; i < rocker->port_count; i++) {
4205                 err = rocker_probe_port(rocker, i);
4206                 if (err)
4207                         goto remove_ports;
4208         }
4209         return 0;
4210
4211 remove_ports:
4212         rocker_remove_ports(rocker);
4213         return err;
4214 }
4215
4216 static int rocker_msix_init(struct rocker *rocker)
4217 {
4218         struct pci_dev *pdev = rocker->pdev;
4219         int msix_entries;
4220         int i;
4221         int err;
4222
4223         msix_entries = pci_msix_vec_count(pdev);
4224         if (msix_entries < 0)
4225                 return msix_entries;
4226
4227         if (msix_entries != ROCKER_MSIX_VEC_COUNT(rocker->port_count))
4228                 return -EINVAL;
4229
4230         rocker->msix_entries = kmalloc_array(msix_entries,
4231                                              sizeof(struct msix_entry),
4232                                              GFP_KERNEL);
4233         if (!rocker->msix_entries)
4234                 return -ENOMEM;
4235
4236         for (i = 0; i < msix_entries; i++)
4237                 rocker->msix_entries[i].entry = i;
4238
4239         err = pci_enable_msix_exact(pdev, rocker->msix_entries, msix_entries);
4240         if (err < 0)
4241                 goto err_enable_msix;
4242
4243         return 0;
4244
4245 err_enable_msix:
4246         kfree(rocker->msix_entries);
4247         return err;
4248 }
4249
4250 static void rocker_msix_fini(struct rocker *rocker)
4251 {
4252         pci_disable_msix(rocker->pdev);
4253         kfree(rocker->msix_entries);
4254 }
4255
4256 static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
4257 {
4258         struct rocker *rocker;
4259         int err;
4260
4261         rocker = kzalloc(sizeof(*rocker), GFP_KERNEL);
4262         if (!rocker)
4263                 return -ENOMEM;
4264
4265         err = pci_enable_device(pdev);
4266         if (err) {
4267                 dev_err(&pdev->dev, "pci_enable_device failed\n");
4268                 goto err_pci_enable_device;
4269         }
4270
4271         err = pci_request_regions(pdev, rocker_driver_name);
4272         if (err) {
4273                 dev_err(&pdev->dev, "pci_request_regions failed\n");
4274                 goto err_pci_request_regions;
4275         }
4276
4277         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
4278         if (!err) {
4279                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4280                 if (err) {
4281                         dev_err(&pdev->dev, "pci_set_consistent_dma_mask failed\n");
4282                         goto err_pci_set_dma_mask;
4283                 }
4284         } else {
4285                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4286                 if (err) {
4287                         dev_err(&pdev->dev, "pci_set_dma_mask failed\n");
4288                         goto err_pci_set_dma_mask;
4289                 }
4290         }
4291
4292         if (pci_resource_len(pdev, 0) < ROCKER_PCI_BAR0_SIZE) {
4293                 dev_err(&pdev->dev, "invalid PCI region size\n");
4294                 goto err_pci_resource_len_check;
4295         }
4296
4297         rocker->hw_addr = ioremap(pci_resource_start(pdev, 0),
4298                                   pci_resource_len(pdev, 0));
4299         if (!rocker->hw_addr) {
4300                 dev_err(&pdev->dev, "ioremap failed\n");
4301                 err = -EIO;
4302                 goto err_ioremap;
4303         }
4304         pci_set_master(pdev);
4305
4306         rocker->pdev = pdev;
4307         pci_set_drvdata(pdev, rocker);
4308
4309         rocker->port_count = rocker_read32(rocker, PORT_PHYS_COUNT);
4310
4311         err = rocker_msix_init(rocker);
4312         if (err) {
4313                 dev_err(&pdev->dev, "MSI-X init failed\n");
4314                 goto err_msix_init;
4315         }
4316
4317         err = rocker_basic_hw_test(rocker);
4318         if (err) {
4319                 dev_err(&pdev->dev, "basic hw test failed\n");
4320                 goto err_basic_hw_test;
4321         }
4322
4323         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4324
4325         err = rocker_dma_rings_init(rocker);
4326         if (err)
4327                 goto err_dma_rings_init;
4328
4329         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD),
4330                           rocker_cmd_irq_handler, 0,
4331                           rocker_driver_name, rocker);
4332         if (err) {
4333                 dev_err(&pdev->dev, "cannot assign cmd irq\n");
4334                 goto err_request_cmd_irq;
4335         }
4336
4337         err = request_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT),
4338                           rocker_event_irq_handler, 0,
4339                           rocker_driver_name, rocker);
4340         if (err) {
4341                 dev_err(&pdev->dev, "cannot assign event irq\n");
4342                 goto err_request_event_irq;
4343         }
4344
4345         rocker->hw.id = rocker_read64(rocker, SWITCH_ID);
4346
4347         err = rocker_init_tbls(rocker);
4348         if (err) {
4349                 dev_err(&pdev->dev, "cannot init rocker tables\n");
4350                 goto err_init_tbls;
4351         }
4352
4353         err = rocker_probe_ports(rocker);
4354         if (err) {
4355                 dev_err(&pdev->dev, "failed to probe ports\n");
4356                 goto err_probe_ports;
4357         }
4358
4359         dev_info(&pdev->dev, "Rocker switch with id %016llx\n", rocker->hw.id);
4360
4361         return 0;
4362
4363 err_probe_ports:
4364         rocker_free_tbls(rocker);
4365 err_init_tbls:
4366         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4367 err_request_event_irq:
4368         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4369 err_request_cmd_irq:
4370         rocker_dma_rings_fini(rocker);
4371 err_dma_rings_init:
4372 err_basic_hw_test:
4373         rocker_msix_fini(rocker);
4374 err_msix_init:
4375         iounmap(rocker->hw_addr);
4376 err_ioremap:
4377 err_pci_resource_len_check:
4378 err_pci_set_dma_mask:
4379         pci_release_regions(pdev);
4380 err_pci_request_regions:
4381         pci_disable_device(pdev);
4382 err_pci_enable_device:
4383         kfree(rocker);
4384         return err;
4385 }
4386
4387 static void rocker_remove(struct pci_dev *pdev)
4388 {
4389         struct rocker *rocker = pci_get_drvdata(pdev);
4390
4391         rocker_free_tbls(rocker);
4392         rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
4393         rocker_remove_ports(rocker);
4394         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
4395         free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_CMD), rocker);
4396         rocker_dma_rings_fini(rocker);
4397         rocker_msix_fini(rocker);
4398         iounmap(rocker->hw_addr);
4399         pci_release_regions(rocker->pdev);
4400         pci_disable_device(rocker->pdev);
4401         kfree(rocker);
4402 }
4403
4404 static struct pci_driver rocker_pci_driver = {
4405         .name           = rocker_driver_name,
4406         .id_table       = rocker_pci_id_table,
4407         .probe          = rocker_probe,
4408         .remove         = rocker_remove,
4409 };
4410
4411 /************************************
4412  * Net device notifier event handler
4413  ************************************/
4414
4415 static bool rocker_port_dev_check(struct net_device *dev)
4416 {
4417         return dev->netdev_ops == &rocker_port_netdev_ops;
4418 }
4419
4420 static int rocker_port_bridge_join(struct rocker_port *rocker_port,
4421                                    struct net_device *bridge)
4422 {
4423         int err;
4424
4425         rocker_port_internal_vlan_id_put(rocker_port,
4426                                          rocker_port->dev->ifindex);
4427
4428         rocker_port->bridge_dev = bridge;
4429
4430         /* Use bridge internal VLAN ID for untagged pkts */
4431         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4432         if (err)
4433                 return err;
4434         rocker_port->internal_vlan_id =
4435                 rocker_port_internal_vlan_id_get(rocker_port,
4436                                                  bridge->ifindex);
4437         err = rocker_port_vlan(rocker_port, 0, 0);
4438
4439         return err;
4440 }
4441
4442 static int rocker_port_bridge_leave(struct rocker_port *rocker_port)
4443 {
4444         int err;
4445
4446         rocker_port_internal_vlan_id_put(rocker_port,
4447                                          rocker_port->bridge_dev->ifindex);
4448
4449         rocker_port->bridge_dev = NULL;
4450
4451         /* Use port internal VLAN ID for untagged pkts */
4452         err = rocker_port_vlan(rocker_port, ROCKER_OP_FLAG_REMOVE, 0);
4453         if (err)
4454                 return err;
4455         rocker_port->internal_vlan_id =
4456                 rocker_port_internal_vlan_id_get(rocker_port,
4457                                                  rocker_port->dev->ifindex);
4458         err = rocker_port_vlan(rocker_port, 0, 0);
4459
4460         return err;
4461 }
4462
4463 static int rocker_port_master_changed(struct net_device *dev)
4464 {
4465         struct rocker_port *rocker_port = netdev_priv(dev);
4466         struct net_device *master = netdev_master_upper_dev_get(dev);
4467         int err = 0;
4468
4469         if (master && master->rtnl_link_ops &&
4470             !strcmp(master->rtnl_link_ops->kind, "bridge"))
4471                 err = rocker_port_bridge_join(rocker_port, master);
4472         else
4473                 err = rocker_port_bridge_leave(rocker_port);
4474
4475         return err;
4476 }
4477
4478 static int rocker_netdevice_event(struct notifier_block *unused,
4479                                   unsigned long event, void *ptr)
4480 {
4481         struct net_device *dev;
4482         int err;
4483
4484         switch (event) {
4485         case NETDEV_CHANGEUPPER:
4486                 dev = netdev_notifier_info_to_dev(ptr);
4487                 if (!rocker_port_dev_check(dev))
4488                         return NOTIFY_DONE;
4489                 err = rocker_port_master_changed(dev);
4490                 if (err)
4491                         netdev_warn(dev,
4492                                     "failed to reflect master change (err %d)\n",
4493                                     err);
4494                 break;
4495         }
4496
4497         return NOTIFY_DONE;
4498 }
4499
4500 static struct notifier_block rocker_netdevice_nb __read_mostly = {
4501         .notifier_call = rocker_netdevice_event,
4502 };
4503
4504 /***********************
4505  * Module init and exit
4506  ***********************/
4507
4508 static int __init rocker_module_init(void)
4509 {
4510         int err;
4511
4512         register_netdevice_notifier(&rocker_netdevice_nb);
4513         err = pci_register_driver(&rocker_pci_driver);
4514         if (err)
4515                 goto err_pci_register_driver;
4516         return 0;
4517
4518 err_pci_register_driver:
4519         unregister_netdevice_notifier(&rocker_netdevice_nb);
4520         return err;
4521 }
4522
4523 static void __exit rocker_module_exit(void)
4524 {
4525         unregister_netdevice_notifier(&rocker_netdevice_nb);
4526         pci_unregister_driver(&rocker_pci_driver);
4527 }
4528
4529 module_init(rocker_module_init);
4530 module_exit(rocker_module_exit);
4531
4532 MODULE_LICENSE("GPL v2");
4533 MODULE_AUTHOR("Jiri Pirko <jiri@resnulli.us>");
4534 MODULE_AUTHOR("Scott Feldman <sfeldma@gmail.com>");
4535 MODULE_DESCRIPTION("Rocker switch device driver");
4536 MODULE_DEVICE_TABLE(pci, rocker_pci_id_table);