drivers/net/ethernet/mellanox/mlx4/en_netdev.c

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/bpf.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/tcp.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/delay.h>
  39 #include <linux/slab.h>
  40 #include <linux/hash.h>
  41 #include <net/ip.h>
  42 #include <net/vxlan.h>
  43 #include <net/devlink.h>
  44
  45 #include <linux/mlx4/driver.h>
  46 #include <linux/mlx4/device.h>
  47 #include <linux/mlx4/cmd.h>
  48 #include <linux/mlx4/cq.h>
  49
  50 #include "mlx4_en.h"
  51 #include "en_port.h"
  52
  53 #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  54                                 XDP_PACKET_HEADROOM -                       \
  55                                 SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))
  56
  57 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  58 {
  59         struct mlx4_en_priv *priv = netdev_priv(dev);
  60         int i;
  61         unsigned int offset = 0;
  62
  63         if (up && up != MLX4_EN_NUM_UP_HIGH)
  64                 return -EINVAL;
  65
  66         netdev_set_num_tc(dev, up);
  67         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  68         /* Partition Tx queues evenly amongst UP's */
  69         for (i = 0; i < up; i++) {
  70                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  71                 offset += priv->num_tx_rings_p_up;
  72         }
  73
  74 #ifdef CONFIG_MLX4_EN_DCB
  75         if (!mlx4_is_slave(priv->mdev->dev)) {
  76                 if (up) {
  77                         if (priv->dcbx_cap)
  78                                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  79                 } else {
  80                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  81                         priv->cee_config.pfc_state = false;
  82                 }
  83         }
  84 #endif /* CONFIG_MLX4_EN_DCB */
  85
  86         return 0;
  87 }
  88
  89 int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  90 {
  91         struct mlx4_en_priv *priv = netdev_priv(dev);
  92         struct mlx4_en_dev *mdev = priv->mdev;
  93         struct mlx4_en_port_profile new_prof;
  94         struct mlx4_en_priv *tmp;
  95         int total_count;
  96         int port_up = 0;
  97         int err = 0;
  98
  99         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
 100         if (!tmp)
 101                 return -ENOMEM;
 102
 103         mutex_lock(&mdev->state_lock);
 104         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 105         new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 106                                       MLX4_EN_NUM_UP_HIGH;
 107         new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 108                                    new_prof.num_up;
 109         total_count = new_prof.tx_ring_num[TX] + new_prof.tx_ring_num[TX_XDP];
 110         if (total_count > MAX_TX_RINGS) {
 111                 err = -EINVAL;
 112                 en_err(priv,
 113                        "Total number of TX and XDP rings (%d) exceeds the maximum supported (%d)\n",
 114                        total_count, MAX_TX_RINGS);
 115                 goto out;
 116         }
 117         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 118         if (err)
 119                 goto out;
 120
 121         if (priv->port_up) {
 122                 port_up = 1;
 123                 mlx4_en_stop_port(dev, 1);
 124         }
 125
 126         mlx4_en_safe_replace_resources(priv, tmp);
 127         if (port_up) {
 128                 err = mlx4_en_start_port(dev);
 129                 if (err) {
 130                         en_err(priv, "Failed starting port for setup TC\n");
 131                         goto out;
 132                 }
 133         }
 134
 135         err = mlx4_en_setup_tc(dev, tc);
 136 out:
 137         mutex_unlock(&mdev->state_lock);
 138         kfree(tmp);
 139         return err;
 140 }
 141
 142 static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 143                               void *type_data)
 144 {
 145         struct tc_mqprio_qopt *mqprio = type_data;
 146
 147         if (type != TC_SETUP_QDISC_MQPRIO)
 148                 return -EOPNOTSUPP;
 149
 150         if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 151                 return -EINVAL;
 152
 153         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 154
 155         return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 156 }
 157
 158 #ifdef CONFIG_RFS_ACCEL
 159
 160 struct mlx4_en_filter {
 161         struct list_head next;
 162         struct work_struct work;
 163
 164         u8     ip_proto;
 165         __be32 src_ip;
 166         __be32 dst_ip;
 167         __be16 src_port;
 168         __be16 dst_port;
 169
 170         int rxq_index;
 171         struct mlx4_en_priv *priv;
 172         u32 flow_id;                    /* RFS infrastructure id */
 173         int id;                         /* mlx4_en driver id */
 174         u64 reg_id;                     /* Flow steering API id */
 175         u8 activated;                   /* Used to prevent expiry before filter
 176                                          * is attached
 177                                          */
 178         struct hlist_node filter_chain;
 179 };
 180
 181 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 182
 183 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 184 {
 185         switch (ip_proto) {
 186         case IPPROTO_UDP:
 187                 return MLX4_NET_TRANS_RULE_ID_UDP;
 188         case IPPROTO_TCP:
 189                 return MLX4_NET_TRANS_RULE_ID_TCP;
 190         default:
 191                 return MLX4_NET_TRANS_RULE_NUM;
 192         }
 193 };
 194
 195 /* Must not acquire state_lock, as its corresponding work_sync
 196  * is done under it.
 197  */
 198 static void mlx4_en_filter_work(struct work_struct *work)
 199 {
 200         struct mlx4_en_filter *filter = container_of(work,
 201                                                      struct mlx4_en_filter,
 202                                                      work);
 203         struct mlx4_en_priv *priv = filter->priv;
 204         struct mlx4_spec_list spec_tcp_udp = {
 205                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 206                 {
 207                         .tcp_udp = {
 208                                 .dst_port = filter->dst_port,
 209                                 .dst_port_msk = (__force __be16)-1,
 210                                 .src_port = filter->src_port,
 211                                 .src_port_msk = (__force __be16)-1,
 212                         },
 213                 },
 214         };
 215         struct mlx4_spec_list spec_ip = {
 216                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 217                 {
 218                         .ipv4 = {
 219                                 .dst_ip = filter->dst_ip,
 220                                 .dst_ip_msk = (__force __be32)-1,
 221                                 .src_ip = filter->src_ip,
 222                                 .src_ip_msk = (__force __be32)-1,
 223                         },
 224                 },
 225         };
 226         struct mlx4_spec_list spec_eth = {
 227                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 228         };
 229         struct mlx4_net_trans_rule rule = {
 230                 .list = LIST_HEAD_INIT(rule.list),
 231                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 232                 .exclusive = 1,
 233                 .allow_loopback = 1,
 234                 .promisc_mode = MLX4_FS_REGULAR,
 235                 .port = priv->port,
 236                 .priority = MLX4_DOMAIN_RFS,
 237         };
 238         int rc;
 239         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 240
 241         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 242                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 243                         filter->ip_proto);
 244                 goto ignore;
 245         }
 246         list_add_tail(&spec_eth.list, &rule.list);
 247         list_add_tail(&spec_ip.list, &rule.list);
 248         list_add_tail(&spec_tcp_udp.list, &rule.list);
 249
 250         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 251         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 252         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 253
 254         filter->activated = 0;
 255
 256         if (filter->reg_id) {
 257                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 258                 if (rc && rc != -ENOENT)
 259                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 260         }
 261
 262         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 263         if (rc)
 264                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 265
 266 ignore:
 267         mlx4_en_filter_rfs_expire(priv);
 268
 269         filter->activated = 1;
 270 }
 271
 272 static inline struct hlist_head *
 273 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 274                    __be16 src_port, __be16 dst_port)
 275 {
 276         unsigned long l;
 277         int bucket_idx;
 278
 279         l = (__force unsigned long)src_port |
 280             ((__force unsigned long)dst_port << 2);
 281         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 282
 283         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 284
 285         return &priv->filter_hash[bucket_idx];
 286 }
 287
 288 static struct mlx4_en_filter *
 289 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 290                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 291                      __be16 dst_port, u32 flow_id)
 292 {
 293         struct mlx4_en_filter *filter = NULL;
 294
 295         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 296         if (!filter)
 297                 return NULL;
 298
 299         filter->priv = priv;
 300         filter->rxq_index = rxq_index;
 301         INIT_WORK(&filter->work, mlx4_en_filter_work);
 302
 303         filter->src_ip = src_ip;
 304         filter->dst_ip = dst_ip;
 305         filter->ip_proto = ip_proto;
 306         filter->src_port = src_port;
 307         filter->dst_port = dst_port;
 308
 309         filter->flow_id = flow_id;
 310
 311         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 312
 313         list_add_tail(&filter->next, &priv->filters);
 314         hlist_add_head(&filter->filter_chain,
 315                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 316                                           dst_port));
 317
 318         return filter;
 319 }
 320
 321 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 322 {
 323         struct mlx4_en_priv *priv = filter->priv;
 324         int rc;
 325
 326         list_del(&filter->next);
 327
 328         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 329         if (rc && rc != -ENOENT)
 330                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 331
 332         kfree(filter);
 333 }
 334
 335 static inline struct mlx4_en_filter *
 336 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 337                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 338 {
 339         struct mlx4_en_filter *filter;
 340         struct mlx4_en_filter *ret = NULL;
 341
 342         hlist_for_each_entry(filter,
 343                              filter_hash_bucket(priv, src_ip, dst_ip,
 344                                                 src_port, dst_port),
 345                              filter_chain) {
 346                 if (filter->src_ip == src_ip &&
 347                     filter->dst_ip == dst_ip &&
 348                     filter->ip_proto == ip_proto &&
 349                     filter->src_port == src_port &&
 350                     filter->dst_port == dst_port) {
 351                         ret = filter;
 352                         break;
 353                 }
 354         }
 355
 356         return ret;
 357 }
 358
 359 static int
 360 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 361                    u16 rxq_index, u32 flow_id)
 362 {
 363         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 364         struct mlx4_en_filter *filter;
 365         const struct iphdr *ip;
 366         const __be16 *ports;
 367         u8 ip_proto;
 368         __be32 src_ip;
 369         __be32 dst_ip;
 370         __be16 src_port;
 371         __be16 dst_port;
 372         int nhoff = skb_network_offset(skb);
 373         int ret = 0;
 374
 375         if (skb->encapsulation)
 376                 return -EPROTONOSUPPORT;
 377
 378         if (skb->protocol != htons(ETH_P_IP))
 379                 return -EPROTONOSUPPORT;
 380
 381         ip = (const struct iphdr *)(skb->data + nhoff);
 382         if (ip_is_fragment(ip))
 383                 return -EPROTONOSUPPORT;
 384
 385         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 386                 return -EPROTONOSUPPORT;
 387         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 388
 389         ip_proto = ip->protocol;
 390         src_ip = ip->saddr;
 391         dst_ip = ip->daddr;
 392         src_port = ports[0];
 393         dst_port = ports[1];
 394
 395         spin_lock_bh(&priv->filters_lock);
 396         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 397                                      src_port, dst_port);
 398         if (filter) {
 399                 if (filter->rxq_index == rxq_index)
 400                         goto out;
 401
 402                 filter->rxq_index = rxq_index;
 403         } else {
 404                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 405                                               src_ip, dst_ip, ip_proto,
 406                                               src_port, dst_port, flow_id);
 407                 if (!filter) {
 408                         ret = -ENOMEM;
 409                         goto err;
 410                 }
 411         }
 412
 413         queue_work(priv->mdev->workqueue, &filter->work);
 414
 415 out:
 416         ret = filter->id;
 417 err:
 418         spin_unlock_bh(&priv->filters_lock);
 419
 420         return ret;
 421 }
 422
 423 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 424 {
 425         struct mlx4_en_filter *filter, *tmp;
 426         LIST_HEAD(del_list);
 427
 428         spin_lock_bh(&priv->filters_lock);
 429         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 430                 list_move(&filter->next, &del_list);
 431                 hlist_del(&filter->filter_chain);
 432         }
 433         spin_unlock_bh(&priv->filters_lock);
 434
 435         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 436                 cancel_work_sync(&filter->work);
 437                 mlx4_en_filter_free(filter);
 438         }
 439 }
 440
 441 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 442 {
 443         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 444         LIST_HEAD(del_list);
 445         int i = 0;
 446
 447         spin_lock_bh(&priv->filters_lock);
 448         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 449                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 450                         break;
 451
 452                 if (filter->activated &&
 453                     !work_pending(&filter->work) &&
 454                     rps_may_expire_flow(priv->dev,
 455                                         filter->rxq_index, filter->flow_id,
 456                                         filter->id)) {
 457                         list_move(&filter->next, &del_list);
 458                         hlist_del(&filter->filter_chain);
 459                 } else
 460                         last_filter = filter;
 461
 462                 i++;
 463         }
 464
 465         if (last_filter && (&last_filter->next != priv->filters.next))
 466                 list_move(&priv->filters, &last_filter->next);
 467
 468         spin_unlock_bh(&priv->filters_lock);
 469
 470         list_for_each_entry_safe(filter, tmp, &del_list, next)
 471                 mlx4_en_filter_free(filter);
 472 }
 473 #endif
 474
 475 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 476                                    __be16 proto, u16 vid)
 477 {
 478         struct mlx4_en_priv *priv = netdev_priv(dev);
 479         struct mlx4_en_dev *mdev = priv->mdev;
 480         int err;
 481         int idx;
 482
 483         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 484
 485         set_bit(vid, priv->active_vlans);
 486
 487         /* Add VID to port VLAN filter */
 488         mutex_lock(&mdev->state_lock);
 489         if (mdev->device_up && priv->port_up) {
 490                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 491                 if (err) {
 492                         en_err(priv, "Failed configuring VLAN filter\n");
 493                         goto out;
 494                 }
 495         }
 496         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 497         if (err)
 498                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 499
 500 out:
 501         mutex_unlock(&mdev->state_lock);
 502         return err;
 503 }
 504
 505 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 506                                     __be16 proto, u16 vid)
 507 {
 508         struct mlx4_en_priv *priv = netdev_priv(dev);
 509         struct mlx4_en_dev *mdev = priv->mdev;
 510         int err = 0;
 511
 512         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 513
 514         clear_bit(vid, priv->active_vlans);
 515
 516         /* Remove VID from port VLAN filter */
 517         mutex_lock(&mdev->state_lock);
 518         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 519
 520         if (mdev->device_up && priv->port_up) {
 521                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 522                 if (err)
 523                         en_err(priv, "Failed configuring VLAN filter\n");
 524         }
 525         mutex_unlock(&mdev->state_lock);
 526
 527         return err;
 528 }
 529
 530 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 531 {
 532         int i;
 533         for (i = ETH_ALEN - 1; i >= 0; --i) {
 534                 dst_mac[i] = src_mac & 0xff;
 535                 src_mac >>= 8;
 536         }
 537         memset(&dst_mac[ETH_ALEN], 0, 2);
 538 }
 539
 540
 541 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 542                                     int qpn, u64 *reg_id)
 543 {
 544         int err;
 545
 546         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 547             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 548                 return 0; /* do nothing */
 549
 550         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 551                                     MLX4_DOMAIN_NIC, reg_id);
 552         if (err) {
 553                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 554                 return err;
 555         }
 556         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 557         return 0;
 558 }
 559
 560
 561 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 562                                 unsigned char *mac, int *qpn, u64 *reg_id)
 563 {
 564         struct mlx4_en_dev *mdev = priv->mdev;
 565         struct mlx4_dev *dev = mdev->dev;
 566         int err;
 567
 568         switch (dev->caps.steering_mode) {
 569         case MLX4_STEERING_MODE_B0: {
 570                 struct mlx4_qp qp;
 571                 u8 gid[16] = {0};
 572
 573                 qp.qpn = *qpn;
 574                 memcpy(&gid[10], mac, ETH_ALEN);
 575                 gid[5] = priv->port;
 576
 577                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 578                 break;
 579         }
 580         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 581                 struct mlx4_spec_list spec_eth = { {NULL} };
 582                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 583
 584                 struct mlx4_net_trans_rule rule = {
 585                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 586                         .exclusive = 0,
 587                         .allow_loopback = 1,
 588                         .promisc_mode = MLX4_FS_REGULAR,
 589                         .priority = MLX4_DOMAIN_NIC,
 590                 };
 591
 592                 rule.port = priv->port;
 593                 rule.qpn = *qpn;
 594                 INIT_LIST_HEAD(&rule.list);
 595
 596                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 597                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 598                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 599                 list_add_tail(&spec_eth.list, &rule.list);
 600
 601                 err = mlx4_flow_attach(dev, &rule, reg_id);
 602                 break;
 603         }
 604         default:
 605                 return -EINVAL;
 606         }
 607         if (err)
 608                 en_warn(priv, "Failed Attaching Unicast\n");
 609
 610         return err;
 611 }
 612
 613 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 614                                      unsigned char *mac, int qpn, u64 reg_id)
 615 {
 616         struct mlx4_en_dev *mdev = priv->mdev;
 617         struct mlx4_dev *dev = mdev->dev;
 618
 619         switch (dev->caps.steering_mode) {
 620         case MLX4_STEERING_MODE_B0: {
 621                 struct mlx4_qp qp;
 622                 u8 gid[16] = {0};
 623
 624                 qp.qpn = qpn;
 625                 memcpy(&gid[10], mac, ETH_ALEN);
 626                 gid[5] = priv->port;
 627
 628                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 629                 break;
 630         }
 631         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 632                 mlx4_flow_detach(dev, reg_id);
 633                 break;
 634         }
 635         default:
 636                 en_err(priv, "Invalid steering mode.\n");
 637         }
 638 }
 639
 640 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 641 {
 642         struct mlx4_en_dev *mdev = priv->mdev;
 643         struct mlx4_dev *dev = mdev->dev;
 644         int index = 0;
 645         int err = 0;
 646         int *qpn = &priv->base_qpn;
 647         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 648
 649         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 650                priv->dev->dev_addr);
 651         index = mlx4_register_mac(dev, priv->port, mac);
 652         if (index < 0) {
 653                 err = index;
 654                 en_err(priv, "Failed adding MAC: %pM\n",
 655                        priv->dev->dev_addr);
 656                 return err;
 657         }
 658
 659         en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 660
 661         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 662                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 663                 *qpn = base_qpn + index;
 664                 return 0;
 665         }
 666
 667         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 668                                     MLX4_RES_USAGE_DRIVER);
 669         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 670         if (err) {
 671                 en_err(priv, "Failed to reserve qp for mac registration\n");
 672                 mlx4_unregister_mac(dev, priv->port, mac);
 673                 return err;
 674         }
 675
 676         return 0;
 677 }
 678
 679 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 680 {
 681         struct mlx4_en_dev *mdev = priv->mdev;
 682         struct mlx4_dev *dev = mdev->dev;
 683         int qpn = priv->base_qpn;
 684
 685         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 686                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 687                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 688                        priv->dev->dev_addr);
 689                 mlx4_unregister_mac(dev, priv->port, mac);
 690         } else {
 691                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 692                        priv->port, qpn);
 693                 mlx4_qp_release_range(dev, qpn, 1);
 694                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 695         }
 696 }
 697
 698 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 699                                unsigned char *new_mac, unsigned char *prev_mac)
 700 {
 701         struct mlx4_en_dev *mdev = priv->mdev;
 702         struct mlx4_dev *dev = mdev->dev;
 703         int err = 0;
 704         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 705
 706         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 707                 struct hlist_head *bucket;
 708                 unsigned int mac_hash;
 709                 struct mlx4_mac_entry *entry;
 710                 struct hlist_node *tmp;
 711                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 712
 713                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 714                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 715                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 716                                 mlx4_en_uc_steer_release(priv, entry->mac,
 717                                                          qpn, entry->reg_id);
 718                                 mlx4_unregister_mac(dev, priv->port,
 719                                                     prev_mac_u64);
 720                                 hlist_del_rcu(&entry->hlist);
 721                                 synchronize_rcu();
 722                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 723                                 entry->reg_id = 0;
 724                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 725                                 hlist_add_head_rcu(&entry->hlist,
 726                                                    &priv->mac_hash[mac_hash]);
 727                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 728                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 729                                                            &qpn,
 730                                                            &entry->reg_id);
 731                                 if (err)
 732                                         return err;
 733                                 if (priv->tunnel_reg_id) {
 734                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 735                                         priv->tunnel_reg_id = 0;
 736                                 }
 737                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 738                                                                &priv->tunnel_reg_id);
 739                                 return err;
 740                         }
 741                 }
 742                 return -EINVAL;
 743         }
 744
 745         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 746 }
 747
 748 static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 749                                     unsigned char new_mac[ETH_ALEN + 2])
 750 {
 751         struct mlx4_en_dev *mdev = priv->mdev;
 752         int err;
 753
 754         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 755                 return;
 756
 757         err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 758         if (err)
 759                 en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 760                        new_mac, priv->port, err);
 761 }
 762
 763 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 764                               unsigned char new_mac[ETH_ALEN + 2])
 765 {
 766         int err = 0;
 767
 768         if (priv->port_up) {
 769                 /* Remove old MAC and insert the new one */
 770                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 771                                           new_mac, priv->current_mac);
 772                 if (err)
 773                         en_err(priv, "Failed changing HW MAC address\n");
 774         } else
 775                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 776
 777         if (!err)
 778                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 779
 780         return err;
 781 }
 782
 783 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 784 {
 785         struct mlx4_en_priv *priv = netdev_priv(dev);
 786         struct mlx4_en_dev *mdev = priv->mdev;
 787         struct sockaddr *saddr = addr;
 788         unsigned char new_mac[ETH_ALEN + 2];
 789         int err;
 790
 791         if (!is_valid_ether_addr(saddr->sa_data))
 792                 return -EADDRNOTAVAIL;
 793
 794         mutex_lock(&mdev->state_lock);
 795         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 796         err = mlx4_en_do_set_mac(priv, new_mac);
 797         if (err)
 798                 goto out;
 799
 800         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 801         mlx4_en_update_user_mac(priv, new_mac);
 802 out:
 803         mutex_unlock(&mdev->state_lock);
 804
 805         return err;
 806 }
 807
 808 static void mlx4_en_clear_list(struct net_device *dev)
 809 {
 810         struct mlx4_en_priv *priv = netdev_priv(dev);
 811         struct mlx4_en_mc_list *tmp, *mc_to_del;
 812
 813         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 814                 list_del(&mc_to_del->list);
 815                 kfree(mc_to_del);
 816         }
 817 }
 818
 819 static void mlx4_en_cache_mclist(struct net_device *dev)
 820 {
 821         struct mlx4_en_priv *priv = netdev_priv(dev);
 822         struct netdev_hw_addr *ha;
 823         struct mlx4_en_mc_list *tmp;
 824
 825         mlx4_en_clear_list(dev);
 826         netdev_for_each_mc_addr(ha, dev) {
 827                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 828                 if (!tmp) {
 829                         mlx4_en_clear_list(dev);
 830                         return;
 831                 }
 832                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 833                 list_add_tail(&tmp->list, &priv->mc_list);
 834         }
 835 }
 836
 837 static void update_mclist_flags(struct mlx4_en_priv *priv,
 838                                 struct list_head *dst,
 839                                 struct list_head *src)
 840 {
 841         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 842         bool found;
 843
 844         /* Find all the entries that should be removed from dst,
 845          * These are the entries that are not found in src
 846          */
 847         list_for_each_entry(dst_tmp, dst, list) {
 848                 found = false;
 849                 list_for_each_entry(src_tmp, src, list) {
 850                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 851                                 found = true;
 852                                 break;
 853                         }
 854                 }
 855                 if (!found)
 856                         dst_tmp->action = MCLIST_REM;
 857         }
 858
 859         /* Add entries that exist in src but not in dst
 860          * mark them as need to add
 861          */
 862         list_for_each_entry(src_tmp, src, list) {
 863                 found = false;
 864                 list_for_each_entry(dst_tmp, dst, list) {
 865                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 866                                 dst_tmp->action = MCLIST_NONE;
 867                                 found = true;
 868                                 break;
 869                         }
 870                 }
 871                 if (!found) {
 872                         new_mc = kmemdup(src_tmp,
 873                                          sizeof(struct mlx4_en_mc_list),
 874                                          GFP_KERNEL);
 875                         if (!new_mc)
 876                                 return;
 877
 878                         new_mc->action = MCLIST_ADD;
 879                         list_add_tail(&new_mc->list, dst);
 880                 }
 881         }
 882 }
 883
 884 static void mlx4_en_set_rx_mode(struct net_device *dev)
 885 {
 886         struct mlx4_en_priv *priv = netdev_priv(dev);
 887
 888         if (!priv->port_up)
 889                 return;
 890
 891         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 892 }
 893
 894 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 895                                      struct mlx4_en_dev *mdev)
 896 {
 897         int err = 0;
 898
 899         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 900                 if (netif_msg_rx_status(priv))
 901                         en_warn(priv, "Entering promiscuous mode\n");
 902                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 903
 904                 /* Enable promiscouos mode */
 905                 switch (mdev->dev->caps.steering_mode) {
 906                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 907                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 908                                                           priv->port,
 909                                                           priv->base_qpn,
 910                                                           MLX4_FS_ALL_DEFAULT);
 911                         if (err)
 912                                 en_err(priv, "Failed enabling promiscuous mode\n");
 913                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 914                         break;
 915
 916                 case MLX4_STEERING_MODE_B0:
 917                         err = mlx4_unicast_promisc_add(mdev->dev,
 918                                                        priv->base_qpn,
 919                                                        priv->port);
 920                         if (err)
 921                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 922
 923                         /* Add the default qp number as multicast
 924                          * promisc
 925                          */
 926                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 927                                 err = mlx4_multicast_promisc_add(mdev->dev,
 928                                                                  priv->base_qpn,
 929                                                                  priv->port);
 930                                 if (err)
 931                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 932                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 933                         }
 934                         break;
 935
 936                 case MLX4_STEERING_MODE_A0:
 937                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 938                                                      priv->port,
 939                                                      priv->base_qpn,
 940                                                      1);
 941                         if (err)
 942                                 en_err(priv, "Failed enabling promiscuous mode\n");
 943                         break;
 944                 }
 945
 946                 /* Disable port multicast filter (unconditionally) */
 947                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 948                                           0, MLX4_MCAST_DISABLE);
 949                 if (err)
 950                         en_err(priv, "Failed disabling multicast filter\n");
 951         }
 952 }
 953
 954 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 955                                        struct mlx4_en_dev *mdev)
 956 {
 957         int err = 0;
 958
 959         if (netif_msg_rx_status(priv))
 960                 en_warn(priv, "Leaving promiscuous mode\n");
 961         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 962
 963         /* Disable promiscouos mode */
 964         switch (mdev->dev->caps.steering_mode) {
 965         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 966                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 967                                                      priv->port,
 968                                                      MLX4_FS_ALL_DEFAULT);
 969                 if (err)
 970                         en_err(priv, "Failed disabling promiscuous mode\n");
 971                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 972                 break;
 973
 974         case MLX4_STEERING_MODE_B0:
 975                 err = mlx4_unicast_promisc_remove(mdev->dev,
 976                                                   priv->base_qpn,
 977                                                   priv->port);
 978                 if (err)
 979                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 980                 /* Disable Multicast promisc */
 981                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 982                         err = mlx4_multicast_promisc_remove(mdev->dev,
 983                                                             priv->base_qpn,
 984                                                             priv->port);
 985                         if (err)
 986                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 987                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 988                 }
 989                 break;
 990
 991         case MLX4_STEERING_MODE_A0:
 992                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 993                                              priv->port,
 994                                              priv->base_qpn, 0);
 995                 if (err)
 996                         en_err(priv, "Failed disabling promiscuous mode\n");
 997                 break;
 998         }
 999 }
1000
1001 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1002                                  struct net_device *dev,
1003                                  struct mlx4_en_dev *mdev)
1004 {
1005         struct mlx4_en_mc_list *mclist, *tmp;
1006         u64 mcast_addr = 0;
1007         u8 mc_list[16] = {0};
1008         int err = 0;
1009
1010         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1011         if (dev->flags & IFF_ALLMULTI) {
1012                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1013                                           0, MLX4_MCAST_DISABLE);
1014                 if (err)
1015                         en_err(priv, "Failed disabling multicast filter\n");
1016
1017                 /* Add the default qp number as multicast promisc */
1018                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1019                         switch (mdev->dev->caps.steering_mode) {
1020                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1021                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1022                                                                   priv->port,
1023                                                                   priv->base_qpn,
1024                                                                   MLX4_FS_MC_DEFAULT);
1025                                 break;
1026
1027                         case MLX4_STEERING_MODE_B0:
1028                                 err = mlx4_multicast_promisc_add(mdev->dev,
1029                                                                  priv->base_qpn,
1030                                                                  priv->port);
1031                                 break;
1032
1033                         case MLX4_STEERING_MODE_A0:
1034                                 break;
1035                         }
1036                         if (err)
1037                                 en_err(priv, "Failed entering multicast promisc mode\n");
1038                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1039                 }
1040         } else {
1041                 /* Disable Multicast promisc */
1042                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1043                         switch (mdev->dev->caps.steering_mode) {
1044                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1045                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1046                                                                      priv->port,
1047                                                                      MLX4_FS_MC_DEFAULT);
1048                                 break;
1049
1050                         case MLX4_STEERING_MODE_B0:
1051                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1052                                                                     priv->base_qpn,
1053                                                                     priv->port);
1054                                 break;
1055
1056                         case MLX4_STEERING_MODE_A0:
1057                                 break;
1058                         }
1059                         if (err)
1060                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1061                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1062                 }
1063
1064                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1065                                           0, MLX4_MCAST_DISABLE);
1066                 if (err)
1067                         en_err(priv, "Failed disabling multicast filter\n");
1068
1069                 /* Flush mcast filter and init it with broadcast address */
1070                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1071                                     1, MLX4_MCAST_CONFIG);
1072
1073                 /* Update multicast list - we cache all addresses so they won't
1074                  * change while HW is updated holding the command semaphor */
1075                 netif_addr_lock_bh(dev);
1076                 mlx4_en_cache_mclist(dev);
1077                 netif_addr_unlock_bh(dev);
1078                 list_for_each_entry(mclist, &priv->mc_list, list) {
1079                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
1080                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1081                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1082                 }
1083                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1084                                           0, MLX4_MCAST_ENABLE);
1085                 if (err)
1086                         en_err(priv, "Failed enabling multicast filter\n");
1087
1088                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1089                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1090                         if (mclist->action == MCLIST_REM) {
1091                                 /* detach this address and delete from list */
1092                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1093                                 mc_list[5] = priv->port;
1094                                 err = mlx4_multicast_detach(mdev->dev,
1095                                                             priv->rss_map.indir_qp,
1096                                                             mc_list,
1097                                                             MLX4_PROT_ETH,
1098                                                             mclist->reg_id);
1099                                 if (err)
1100                                         en_err(priv, "Fail to detach multicast address\n");
1101
1102                                 if (mclist->tunnel_reg_id) {
1103                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1104                                         if (err)
1105                                                 en_err(priv, "Failed to detach multicast address\n");
1106                                 }
1107
1108                                 /* remove from list */
1109                                 list_del(&mclist->list);
1110                                 kfree(mclist);
1111                         } else if (mclist->action == MCLIST_ADD) {
1112                                 /* attach the address */
1113                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1114                                 /* needed for B0 steering support */
1115                                 mc_list[5] = priv->port;
1116                                 err = mlx4_multicast_attach(mdev->dev,
1117                                                             priv->rss_map.indir_qp,
1118                                                             mc_list,
1119                                                             priv->port, 0,
1120                                                             MLX4_PROT_ETH,
1121                                                             &mclist->reg_id);
1122                                 if (err)
1123                                         en_err(priv, "Fail to attach multicast address\n");
1124
1125                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1126                                                                &mclist->tunnel_reg_id);
1127                                 if (err)
1128                                         en_err(priv, "Failed to attach multicast address\n");
1129                         }
1130                 }
1131         }
1132 }
1133
1134 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1135                                  struct net_device *dev,
1136                                  struct mlx4_en_dev *mdev)
1137 {
1138         struct netdev_hw_addr *ha;
1139         struct mlx4_mac_entry *entry;
1140         struct hlist_node *tmp;
1141         bool found;
1142         u64 mac;
1143         int err = 0;
1144         struct hlist_head *bucket;
1145         unsigned int i;
1146         int removed = 0;
1147         u32 prev_flags;
1148
1149         /* Note that we do not need to protect our mac_hash traversal with rcu,
1150          * since all modification code is protected by mdev->state_lock
1151          */
1152
1153         /* find what to remove */
1154         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1155                 bucket = &priv->mac_hash[i];
1156                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1157                         found = false;
1158                         netdev_for_each_uc_addr(ha, dev) {
1159                                 if (ether_addr_equal_64bits(entry->mac,
1160                                                             ha->addr)) {
1161                                         found = true;
1162                                         break;
1163                                 }
1164                         }
1165
1166                         /* MAC address of the port is not in uc list */
1167                         if (ether_addr_equal_64bits(entry->mac,
1168                                                     priv->current_mac))
1169                                 found = true;
1170
1171                         if (!found) {
1172                                 mac = mlx4_mac_to_u64(entry->mac);
1173                                 mlx4_en_uc_steer_release(priv, entry->mac,
1174                                                          priv->base_qpn,
1175                                                          entry->reg_id);
1176                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1177
1178                                 hlist_del_rcu(&entry->hlist);
1179                                 kfree_rcu(entry, rcu);
1180                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1181                                        entry->mac, priv->port);
1182                                 ++removed;
1183                         }
1184                 }
1185         }
1186
1187         /* if we didn't remove anything, there is no use in trying to add
1188          * again once we are in a forced promisc mode state
1189          */
1190         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1191                 return;
1192
1193         prev_flags = priv->flags;
1194         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1195
1196         /* find what to add */
1197         netdev_for_each_uc_addr(ha, dev) {
1198                 found = false;
1199                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1200                 hlist_for_each_entry(entry, bucket, hlist) {
1201                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1202                                 found = true;
1203                                 break;
1204                         }
1205                 }
1206
1207                 if (!found) {
1208                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1209                         if (!entry) {
1210                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1211                                        ha->addr, priv->port);
1212                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1213                                 break;
1214                         }
1215                         mac = mlx4_mac_to_u64(ha->addr);
1216                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1217                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1218                         if (err < 0) {
1219                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1220                                        ha->addr, priv->port, err);
1221                                 kfree(entry);
1222                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1223                                 break;
1224                         }
1225                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1226                                                    &priv->base_qpn,
1227                                                    &entry->reg_id);
1228                         if (err) {
1229                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1230                                        ha->addr, priv->port, err);
1231                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1232                                 kfree(entry);
1233                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1234                                 break;
1235                         } else {
1236                                 unsigned int mac_hash;
1237                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1238                                        ha->addr, priv->port);
1239                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1240                                 bucket = &priv->mac_hash[mac_hash];
1241                                 hlist_add_head_rcu(&entry->hlist, bucket);
1242                         }
1243                 }
1244         }
1245
1246         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1247                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1248                         priv->port);
1249         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1250                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1251                         priv->port);
1252         }
1253 }
1254
1255 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1256 {
1257         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1258                                                  rx_mode_task);
1259         struct mlx4_en_dev *mdev = priv->mdev;
1260         struct net_device *dev = priv->dev;
1261
1262         mutex_lock(&mdev->state_lock);
1263         if (!mdev->device_up) {
1264                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1265                 goto out;
1266         }
1267         if (!priv->port_up) {
1268                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1269                 goto out;
1270         }
1271
1272         if (!netif_carrier_ok(dev)) {
1273                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1274                         if (priv->port_state.link_state) {
1275                                 netif_carrier_on(dev);
1276                                 en_dbg(LINK, priv, "Link Up\n");
1277                         }
1278                 }
1279         }
1280
1281         if (dev->priv_flags & IFF_UNICAST_FLT)
1282                 mlx4_en_do_uc_filter(priv, dev, mdev);
1283
1284         /* Promsicuous mode: disable all filters */
1285         if ((dev->flags & IFF_PROMISC) ||
1286             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1287                 mlx4_en_set_promisc_mode(priv, mdev);
1288                 goto out;
1289         }
1290
1291         /* Not in promiscuous mode */
1292         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1293                 mlx4_en_clear_promisc_mode(priv, mdev);
1294
1295         mlx4_en_do_multicast(priv, dev, mdev);
1296 out:
1297         mutex_unlock(&mdev->state_lock);
1298 }
1299
1300 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1301 {
1302         u64 reg_id;
1303         int err = 0;
1304         int *qpn = &priv->base_qpn;
1305         struct mlx4_mac_entry *entry;
1306
1307         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1308         if (err)
1309                 return err;
1310
1311         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1312                                        &priv->tunnel_reg_id);
1313         if (err)
1314                 goto tunnel_err;
1315
1316         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1317         if (!entry) {
1318                 err = -ENOMEM;
1319                 goto alloc_err;
1320         }
1321
1322         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1323         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1324         entry->reg_id = reg_id;
1325         hlist_add_head_rcu(&entry->hlist,
1326                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1327
1328         return 0;
1329
1330 alloc_err:
1331         if (priv->tunnel_reg_id)
1332                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1333
1334 tunnel_err:
1335         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1336         return err;
1337 }
1338
1339 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1340 {
1341         u64 mac;
1342         unsigned int i;
1343         int qpn = priv->base_qpn;
1344         struct hlist_head *bucket;
1345         struct hlist_node *tmp;
1346         struct mlx4_mac_entry *entry;
1347
1348         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1349                 bucket = &priv->mac_hash[i];
1350                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1351                         mac = mlx4_mac_to_u64(entry->mac);
1352                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1353                                entry->mac);
1354                         mlx4_en_uc_steer_release(priv, entry->mac,
1355                                                  qpn, entry->reg_id);
1356
1357                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1358                         hlist_del_rcu(&entry->hlist);
1359                         kfree_rcu(entry, rcu);
1360                 }
1361         }
1362
1363         if (priv->tunnel_reg_id) {
1364                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1365                 priv->tunnel_reg_id = 0;
1366         }
1367 }
1368
1369 static void mlx4_en_tx_timeout(struct net_device *dev, unsigned int txqueue)
1370 {
1371         struct mlx4_en_priv *priv = netdev_priv(dev);
1372         struct mlx4_en_dev *mdev = priv->mdev;
1373         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][txqueue];
1374
1375         if (netif_msg_timer(priv))
1376                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1377
1378         en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1379                 txqueue, tx_ring->qpn, tx_ring->sp_cqn,
1380                 tx_ring->cons, tx_ring->prod);
1381
1382         priv->port_stats.tx_timeout++;
1383         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state)) {
1384                 en_dbg(DRV, priv, "Scheduling port restart\n");
1385                 queue_work(mdev->workqueue, &priv->restart_task);
1386         }
1387 }
1388
1389
1390 static void
1391 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1392 {
1393         struct mlx4_en_priv *priv = netdev_priv(dev);
1394
1395         spin_lock_bh(&priv->stats_lock);
1396         mlx4_en_fold_software_stats(dev);
1397         netdev_stats_to_stats64(stats, &dev->stats);
1398         spin_unlock_bh(&priv->stats_lock);
1399 }
1400
1401 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1402 {
1403         struct mlx4_en_cq *cq;
1404         int i, t;
1405
1406         /* If we haven't received a specific coalescing setting
1407          * (module param), we set the moderation parameters as follows:
1408          * - moder_cnt is set to the number of mtu sized packets to
1409          *   satisfy our coalescing target.
1410          * - moder_time is set to a fixed value.
1411          */
1412         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1413         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1414         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1415         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1416         en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1417                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1418
1419         /* Setup cq moderation params */
1420         for (i = 0; i < priv->rx_ring_num; i++) {
1421                 cq = priv->rx_cq[i];
1422                 cq->moder_cnt = priv->rx_frames;
1423                 cq->moder_time = priv->rx_usecs;
1424                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1425                 priv->last_moder_packets[i] = 0;
1426                 priv->last_moder_bytes[i] = 0;
1427         }
1428
1429         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1430                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1431                         cq = priv->tx_cq[t][i];
1432                         cq->moder_cnt = priv->tx_frames;
1433                         cq->moder_time = priv->tx_usecs;
1434                 }
1435         }
1436
1437         /* Reset auto-moderation params */
1438         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1439         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1440         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1441         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1442         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1443         priv->adaptive_rx_coal = 1;
1444         priv->last_moder_jiffies = 0;
1445         priv->last_moder_tx_packets = 0;
1446 }
1447
1448 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1449 {
1450         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1451         u32 pkt_rate_high, pkt_rate_low;
1452         struct mlx4_en_cq *cq;
1453         unsigned long packets;
1454         unsigned long rate;
1455         unsigned long avg_pkt_size;
1456         unsigned long rx_packets;
1457         unsigned long rx_bytes;
1458         unsigned long rx_pkt_diff;
1459         int moder_time;
1460         int ring, err;
1461
1462         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1463                 return;
1464
1465         pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1466         pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1467
1468         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1469                 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1470                 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1471
1472                 rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1473                 packets = rx_pkt_diff;
1474                 rate = packets * HZ / period;
1475                 avg_pkt_size = packets ? (rx_bytes -
1476                                 priv->last_moder_bytes[ring]) / packets : 0;
1477
1478                 /* Apply auto-moderation only when packet rate
1479                  * exceeds a rate that it matters */
1480                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1481                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1482                         if (rate <= pkt_rate_low)
1483                                 moder_time = priv->rx_usecs_low;
1484                         else if (rate >= pkt_rate_high)
1485                                 moder_time = priv->rx_usecs_high;
1486                         else
1487                                 moder_time = (rate - pkt_rate_low) *
1488                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1489                                         (pkt_rate_high - pkt_rate_low) +
1490                                         priv->rx_usecs_low;
1491                 } else {
1492                         moder_time = priv->rx_usecs_low;
1493                 }
1494
1495                 cq = priv->rx_cq[ring];
1496                 if (moder_time != priv->last_moder_time[ring] ||
1497                     cq->moder_cnt != priv->rx_frames) {
1498                         priv->last_moder_time[ring] = moder_time;
1499                         cq->moder_time = moder_time;
1500                         cq->moder_cnt = priv->rx_frames;
1501                         err = mlx4_en_set_cq_moder(priv, cq);
1502                         if (err)
1503                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1504                                        ring);
1505                 }
1506                 priv->last_moder_packets[ring] = rx_packets;
1507                 priv->last_moder_bytes[ring] = rx_bytes;
1508         }
1509
1510         priv->last_moder_jiffies = jiffies;
1511 }
1512
1513 static void mlx4_en_do_get_stats(struct work_struct *work)
1514 {
1515         struct delayed_work *delay = to_delayed_work(work);
1516         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1517                                                  stats_task);
1518         struct mlx4_en_dev *mdev = priv->mdev;
1519         int err;
1520
1521         mutex_lock(&mdev->state_lock);
1522         if (mdev->device_up) {
1523                 if (priv->port_up) {
1524                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1525                         if (err)
1526                                 en_dbg(HW, priv, "Could not update stats\n");
1527
1528                         mlx4_en_auto_moderation(priv);
1529                 }
1530
1531                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1532         }
1533         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1534                 mlx4_en_do_set_mac(priv, priv->current_mac);
1535                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1536         }
1537         mutex_unlock(&mdev->state_lock);
1538 }
1539
1540 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1541  * periodically
1542  */
1543 static void mlx4_en_service_task(struct work_struct *work)
1544 {
1545         struct delayed_work *delay = to_delayed_work(work);
1546         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1547                                                  service_task);
1548         struct mlx4_en_dev *mdev = priv->mdev;
1549
1550         mutex_lock(&mdev->state_lock);
1551         if (mdev->device_up) {
1552                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1553                         mlx4_en_ptp_overflow_check(mdev);
1554
1555                 mlx4_en_recover_from_oom(priv);
1556                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1557                                    SERVICE_TASK_DELAY);
1558         }
1559         mutex_unlock(&mdev->state_lock);
1560 }
1561
1562 static void mlx4_en_linkstate(struct mlx4_en_priv *priv)
1563 {
1564         struct mlx4_en_port_state *port_state = &priv->port_state;
1565         struct mlx4_en_dev *mdev = priv->mdev;
1566         struct net_device *dev = priv->dev;
1567         bool up;
1568
1569         if (mlx4_en_QUERY_PORT(mdev, priv->port))
1570                 port_state->link_state = MLX4_PORT_STATE_DEV_EVENT_PORT_DOWN;
1571
1572         up = port_state->link_state == MLX4_PORT_STATE_DEV_EVENT_PORT_UP;
1573         if (up == netif_carrier_ok(dev))
1574                 netif_carrier_event(dev);
1575         if (!up) {
1576                 en_info(priv, "Link Down\n");
1577                 netif_carrier_off(dev);
1578         } else {
1579                 en_info(priv, "Link Up\n");
1580                 netif_carrier_on(dev);
1581         }
1582 }
1583
1584 static void mlx4_en_linkstate_work(struct work_struct *work)
1585 {
1586         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1587                                                  linkstate_task);
1588         struct mlx4_en_dev *mdev = priv->mdev;
1589
1590         mutex_lock(&mdev->state_lock);
1591         mlx4_en_linkstate(priv);
1592         mutex_unlock(&mdev->state_lock);
1593 }
1594
1595 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1596 {
1597         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1598         int numa_node = priv->mdev->dev->numa_node;
1599
1600         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1601                 return -ENOMEM;
1602
1603         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1604                         ring->affinity_mask);
1605         return 0;
1606 }
1607
1608 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1609 {
1610         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1611 }
1612
1613 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1614                                       int tx_ring_idx)
1615 {
1616         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1617         int rr_index = tx_ring_idx;
1618
1619         tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1620         tx_ring->recycle_ring = priv->rx_ring[rr_index];
1621         en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1622                TX_XDP, tx_ring_idx, rr_index);
1623 }
1624
1625 int mlx4_en_start_port(struct net_device *dev)
1626 {
1627         struct mlx4_en_priv *priv = netdev_priv(dev);
1628         struct mlx4_en_dev *mdev = priv->mdev;
1629         struct mlx4_en_cq *cq;
1630         struct mlx4_en_tx_ring *tx_ring;
1631         int rx_index = 0;
1632         int err = 0;
1633         int i, t;
1634         int j;
1635         u8 mc_list[16] = {0};
1636
1637         if (priv->port_up) {
1638                 en_dbg(DRV, priv, "start port called while port already up\n");
1639                 return 0;
1640         }
1641
1642         INIT_LIST_HEAD(&priv->mc_list);
1643         INIT_LIST_HEAD(&priv->curr_list);
1644         INIT_LIST_HEAD(&priv->ethtool_list);
1645         memset(&priv->ethtool_rules[0], 0,
1646                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1647
1648         /* Calculate Rx buf size */
1649         dev->mtu = min(dev->mtu, priv->max_mtu);
1650         mlx4_en_calc_rx_buf(dev);
1651         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1652
1653         /* Configure rx cq's and rings */
1654         err = mlx4_en_activate_rx_rings(priv);
1655         if (err) {
1656                 en_err(priv, "Failed to activate RX rings\n");
1657                 return err;
1658         }
1659         for (i = 0; i < priv->rx_ring_num; i++) {
1660                 cq = priv->rx_cq[i];
1661
1662                 err = mlx4_en_init_affinity_hint(priv, i);
1663                 if (err) {
1664                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1665                         goto cq_err;
1666                 }
1667
1668                 err = mlx4_en_activate_cq(priv, cq, i);
1669                 if (err) {
1670                         en_err(priv, "Failed activating Rx CQ\n");
1671                         mlx4_en_free_affinity_hint(priv, i);
1672                         goto cq_err;
1673                 }
1674
1675                 for (j = 0; j < cq->size; j++) {
1676                         struct mlx4_cqe *cqe = NULL;
1677
1678                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1679                               priv->cqe_factor;
1680                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1681                 }
1682
1683                 err = mlx4_en_set_cq_moder(priv, cq);
1684                 if (err) {
1685                         en_err(priv, "Failed setting cq moderation parameters\n");
1686                         mlx4_en_deactivate_cq(priv, cq);
1687                         mlx4_en_free_affinity_hint(priv, i);
1688                         goto cq_err;
1689                 }
1690                 mlx4_en_arm_cq(priv, cq);
1691                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1692                 ++rx_index;
1693         }
1694
1695         /* Set qp number */
1696         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1697         err = mlx4_en_get_qp(priv);
1698         if (err) {
1699                 en_err(priv, "Failed getting eth qp\n");
1700                 goto cq_err;
1701         }
1702         mdev->mac_removed[priv->port] = 0;
1703
1704         priv->counter_index =
1705                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1706
1707         err = mlx4_en_config_rss_steer(priv);
1708         if (err) {
1709                 en_err(priv, "Failed configuring rss steering\n");
1710                 goto mac_err;
1711         }
1712
1713         err = mlx4_en_create_drop_qp(priv);
1714         if (err)
1715                 goto rss_err;
1716
1717         /* Configure tx cq's and rings */
1718         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1719                 u8 num_tx_rings_p_up = t == TX ?
1720                         priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1721
1722                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1723                         /* Configure cq */
1724                         cq = priv->tx_cq[t][i];
1725                         err = mlx4_en_activate_cq(priv, cq, i);
1726                         if (err) {
1727                                 en_err(priv, "Failed allocating Tx CQ\n");
1728                                 goto tx_err;
1729                         }
1730                         err = mlx4_en_set_cq_moder(priv, cq);
1731                         if (err) {
1732                                 en_err(priv, "Failed setting cq moderation parameters\n");
1733                                 mlx4_en_deactivate_cq(priv, cq);
1734                                 goto tx_err;
1735                         }
1736                         en_dbg(DRV, priv,
1737                                "Resetting index of collapsed CQ:%d to -1\n", i);
1738                         cq->buf->wqe_index = cpu_to_be16(0xffff);
1739
1740                         /* Configure ring */
1741                         tx_ring = priv->tx_ring[t][i];
1742                         err = mlx4_en_activate_tx_ring(priv, tx_ring,
1743                                                        cq->mcq.cqn,
1744                                                        i / num_tx_rings_p_up);
1745                         if (err) {
1746                                 en_err(priv, "Failed allocating Tx ring\n");
1747                                 mlx4_en_deactivate_cq(priv, cq);
1748                                 goto tx_err;
1749                         }
1750                         clear_bit(MLX4_EN_TX_RING_STATE_RECOVERING, &tx_ring->state);
1751                         if (t != TX_XDP) {
1752                                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1753                                 tx_ring->recycle_ring = NULL;
1754
1755                                 /* Arm CQ for TX completions */
1756                                 mlx4_en_arm_cq(priv, cq);
1757
1758                         } else {
1759                                 mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring);
1760                                 mlx4_en_init_recycle_ring(priv, i);
1761                                 /* XDP TX CQ should never be armed */
1762                         }
1763
1764                         /* Set initial ownership of all Tx TXBBs to SW (1) */
1765                         for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1766                                 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1767                 }
1768         }
1769
1770         /* Configure port */
1771         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1772                                     priv->rx_skb_size + ETH_FCS_LEN,
1773                                     priv->prof->tx_pause,
1774                                     priv->prof->tx_ppp,
1775                                     priv->prof->rx_pause,
1776                                     priv->prof->rx_ppp);
1777         if (err) {
1778                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1779                        priv->port, err);
1780                 goto tx_err;
1781         }
1782
1783         err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1784         if (err) {
1785                 en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1786                        dev->mtu, priv->port, err);
1787                 goto tx_err;
1788         }
1789
1790         /* Set default qp number */
1791         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1792         if (err) {
1793                 en_err(priv, "Failed setting default qp numbers\n");
1794                 goto tx_err;
1795         }
1796
1797         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1798                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1799                 if (err) {
1800                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1801                                err);
1802                         goto tx_err;
1803                 }
1804         }
1805
1806         /* Init port */
1807         en_dbg(HW, priv, "Initializing port\n");
1808         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1809         if (err) {
1810                 en_err(priv, "Failed Initializing port\n");
1811                 goto tx_err;
1812         }
1813
1814         /* Set Unicast and VXLAN steering rules */
1815         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1816             mlx4_en_set_rss_steer_rules(priv))
1817                 mlx4_warn(mdev, "Failed setting steering rules\n");
1818
1819         /* Attach rx QP to bradcast address */
1820         eth_broadcast_addr(&mc_list[10]);
1821         mc_list[5] = priv->port; /* needed for B0 steering support */
1822         if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1823                                   priv->port, 0, MLX4_PROT_ETH,
1824                                   &priv->broadcast_id))
1825                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1826
1827         /* Must redo promiscuous mode setup. */
1828         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1829
1830         /* Schedule multicast task to populate multicast list */
1831         queue_work(mdev->workqueue, &priv->rx_mode_task);
1832
1833         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1834                 udp_tunnel_nic_reset_ntf(dev);
1835
1836         priv->port_up = true;
1837
1838         /* Process all completions if exist to prevent
1839          * the queues freezing if they are full
1840          */
1841         for (i = 0; i < priv->rx_ring_num; i++) {
1842                 local_bh_disable();
1843                 napi_schedule(&priv->rx_cq[i]->napi);
1844                 local_bh_enable();
1845         }
1846
1847         clear_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state);
1848         netif_tx_start_all_queues(dev);
1849         netif_device_attach(dev);
1850
1851         return 0;
1852
1853 tx_err:
1854         if (t == MLX4_EN_NUM_TX_TYPES) {
1855                 t--;
1856                 i = priv->tx_ring_num[t];
1857         }
1858         while (t >= 0) {
1859                 while (i--) {
1860                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1861                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1862                 }
1863                 if (!t--)
1864                         break;
1865                 i = priv->tx_ring_num[t];
1866         }
1867         mlx4_en_destroy_drop_qp(priv);
1868 rss_err:
1869         mlx4_en_release_rss_steer(priv);
1870 mac_err:
1871         mlx4_en_put_qp(priv);
1872 cq_err:
1873         while (rx_index--) {
1874                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1875                 mlx4_en_free_affinity_hint(priv, rx_index);
1876         }
1877         for (i = 0; i < priv->rx_ring_num; i++)
1878                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1879
1880         return err; /* need to close devices */
1881 }
1882
1883
1884 void mlx4_en_stop_port(struct net_device *dev, int detach)
1885 {
1886         struct mlx4_en_priv *priv = netdev_priv(dev);
1887         struct mlx4_en_dev *mdev = priv->mdev;
1888         struct mlx4_en_mc_list *mclist, *tmp;
1889         struct ethtool_flow_id *flow, *tmp_flow;
1890         int i, t;
1891         u8 mc_list[16] = {0};
1892
1893         if (!priv->port_up) {
1894                 en_dbg(DRV, priv, "stop port called while port already down\n");
1895                 return;
1896         }
1897
1898         /* close port*/
1899         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1900
1901         /* Synchronize with tx routine */
1902         netif_tx_lock_bh(dev);
1903         if (detach)
1904                 netif_device_detach(dev);
1905         netif_tx_stop_all_queues(dev);
1906         netif_tx_unlock_bh(dev);
1907
1908         netif_tx_disable(dev);
1909
1910         spin_lock_bh(&priv->stats_lock);
1911         mlx4_en_fold_software_stats(dev);
1912         /* Set port as not active */
1913         priv->port_up = false;
1914         spin_unlock_bh(&priv->stats_lock);
1915
1916         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1917
1918         /* Promsicuous mode */
1919         if (mdev->dev->caps.steering_mode ==
1920             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1921                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1922                                  MLX4_EN_FLAG_MC_PROMISC);
1923                 mlx4_flow_steer_promisc_remove(mdev->dev,
1924                                                priv->port,
1925                                                MLX4_FS_ALL_DEFAULT);
1926                 mlx4_flow_steer_promisc_remove(mdev->dev,
1927                                                priv->port,
1928                                                MLX4_FS_MC_DEFAULT);
1929         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1930                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1931
1932                 /* Disable promiscouos mode */
1933                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1934                                             priv->port);
1935
1936                 /* Disable Multicast promisc */
1937                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1938                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1939                                                       priv->port);
1940                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1941                 }
1942         }
1943
1944         /* Detach All multicasts */
1945         eth_broadcast_addr(&mc_list[10]);
1946         mc_list[5] = priv->port; /* needed for B0 steering support */
1947         mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1948                               MLX4_PROT_ETH, priv->broadcast_id);
1949         list_for_each_entry(mclist, &priv->curr_list, list) {
1950                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1951                 mc_list[5] = priv->port;
1952                 mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1953                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1954                 if (mclist->tunnel_reg_id)
1955                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1956         }
1957         mlx4_en_clear_list(dev);
1958         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1959                 list_del(&mclist->list);
1960                 kfree(mclist);
1961         }
1962
1963         /* Flush multicast filter */
1964         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1965
1966         /* Remove flow steering rules for the port*/
1967         if (mdev->dev->caps.steering_mode ==
1968             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1969                 ASSERT_RTNL();
1970                 list_for_each_entry_safe(flow, tmp_flow,
1971                                          &priv->ethtool_list, list) {
1972                         mlx4_flow_detach(mdev->dev, flow->id);
1973                         list_del(&flow->list);
1974                 }
1975         }
1976
1977         mlx4_en_destroy_drop_qp(priv);
1978
1979         /* Free TX Rings */
1980         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1981                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1982                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1983                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1984                 }
1985         }
1986         msleep(10);
1987
1988         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1989                 for (i = 0; i < priv->tx_ring_num[t]; i++)
1990                         mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1991
1992         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1993                 mlx4_en_delete_rss_steer_rules(priv);
1994
1995         /* Free RSS qps */
1996         mlx4_en_release_rss_steer(priv);
1997
1998         /* Unregister Mac address for the port */
1999         mlx4_en_put_qp(priv);
2000         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
2001                 mdev->mac_removed[priv->port] = 1;
2002
2003         /* Free RX Rings */
2004         for (i = 0; i < priv->rx_ring_num; i++) {
2005                 struct mlx4_en_cq *cq = priv->rx_cq[i];
2006
2007                 napi_synchronize(&cq->napi);
2008                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
2009                 mlx4_en_deactivate_cq(priv, cq);
2010
2011                 mlx4_en_free_affinity_hint(priv, i);
2012         }
2013 }
2014
2015 static void mlx4_en_restart(struct work_struct *work)
2016 {
2017         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2018                                                  restart_task);
2019         struct mlx4_en_dev *mdev = priv->mdev;
2020         struct net_device *dev = priv->dev;
2021
2022         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2023
2024         rtnl_lock();
2025         mutex_lock(&mdev->state_lock);
2026         if (priv->port_up) {
2027                 mlx4_en_stop_port(dev, 1);
2028                 if (mlx4_en_start_port(dev))
2029                         en_err(priv, "Failed restarting port %d\n", priv->port);
2030         }
2031         mutex_unlock(&mdev->state_lock);
2032         rtnl_unlock();
2033 }
2034
2035 static void mlx4_en_clear_stats(struct net_device *dev)
2036 {
2037         struct mlx4_en_priv *priv = netdev_priv(dev);
2038         struct mlx4_en_dev *mdev = priv->mdev;
2039         struct mlx4_en_tx_ring **tx_ring;
2040         int i;
2041
2042         if (!mlx4_is_slave(mdev->dev))
2043                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2044                         en_dbg(HW, priv, "Failed dumping statistics\n");
2045
2046         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2047         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2048         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2049         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2050         memset(&priv->rx_priority_flowstats, 0,
2051                sizeof(priv->rx_priority_flowstats));
2052         memset(&priv->tx_priority_flowstats, 0,
2053                sizeof(priv->tx_priority_flowstats));
2054         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2055
2056         tx_ring = priv->tx_ring[TX];
2057         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2058                 tx_ring[i]->bytes = 0;
2059                 tx_ring[i]->packets = 0;
2060                 tx_ring[i]->tx_csum = 0;
2061                 tx_ring[i]->tx_dropped = 0;
2062                 tx_ring[i]->queue_stopped = 0;
2063                 tx_ring[i]->wake_queue = 0;
2064                 tx_ring[i]->tso_packets = 0;
2065                 tx_ring[i]->xmit_more = 0;
2066         }
2067         for (i = 0; i < priv->rx_ring_num; i++) {
2068                 priv->rx_ring[i]->bytes = 0;
2069                 priv->rx_ring[i]->packets = 0;
2070                 priv->rx_ring[i]->csum_ok = 0;
2071                 priv->rx_ring[i]->csum_none = 0;
2072                 priv->rx_ring[i]->csum_complete = 0;
2073         }
2074 }
2075
2076 static int mlx4_en_open(struct net_device *dev)
2077 {
2078         struct mlx4_en_priv *priv = netdev_priv(dev);
2079         struct mlx4_en_dev *mdev = priv->mdev;
2080         int err = 0;
2081
2082         mutex_lock(&mdev->state_lock);
2083
2084         if (!mdev->device_up) {
2085                 en_err(priv, "Cannot open - device down/disabled\n");
2086                 err = -EBUSY;
2087                 goto out;
2088         }
2089
2090         /* Reset HW statistics and SW counters */
2091         mlx4_en_clear_stats(dev);
2092
2093         err = mlx4_en_start_port(dev);
2094         if (err) {
2095                 en_err(priv, "Failed starting port:%d\n", priv->port);
2096                 goto out;
2097         }
2098         mlx4_en_linkstate(priv);
2099 out:
2100         mutex_unlock(&mdev->state_lock);
2101         return err;
2102 }
2103
2104
2105 static int mlx4_en_close(struct net_device *dev)
2106 {
2107         struct mlx4_en_priv *priv = netdev_priv(dev);
2108         struct mlx4_en_dev *mdev = priv->mdev;
2109
2110         en_dbg(IFDOWN, priv, "Close port called\n");
2111
2112         mutex_lock(&mdev->state_lock);
2113
2114         mlx4_en_stop_port(dev, 0);
2115         netif_carrier_off(dev);
2116
2117         mutex_unlock(&mdev->state_lock);
2118         return 0;
2119 }
2120
2121 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2122 {
2123         int i, t;
2124
2125 #ifdef CONFIG_RFS_ACCEL
2126         priv->dev->rx_cpu_rmap = NULL;
2127 #endif
2128
2129         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2130                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2131                         if (priv->tx_ring[t] && priv->tx_ring[t][i])
2132                                 mlx4_en_destroy_tx_ring(priv,
2133                                                         &priv->tx_ring[t][i]);
2134                         if (priv->tx_cq[t] && priv->tx_cq[t][i])
2135                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2136                 }
2137                 kfree(priv->tx_ring[t]);
2138                 kfree(priv->tx_cq[t]);
2139         }
2140
2141         for (i = 0; i < priv->rx_ring_num; i++) {
2142                 if (priv->rx_ring[i])
2143                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2144                                 priv->prof->rx_ring_size, priv->stride);
2145                 if (priv->rx_cq[i])
2146                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2147         }
2148
2149 }
2150
2151 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2152 {
2153         struct mlx4_en_port_profile *prof = priv->prof;
2154         int i, t;
2155         int node;
2156
2157         /* Create tx Rings */
2158         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2159                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2160                         node = cpu_to_node(i % num_online_cpus());
2161                         if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2162                                               prof->tx_ring_size, i, t, node))
2163                                 goto err;
2164
2165                         if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2166                                                    prof->tx_ring_size,
2167                                                    TXBB_SIZE, node, i))
2168                                 goto err;
2169                 }
2170         }
2171
2172         /* Create rx Rings */
2173         for (i = 0; i < priv->rx_ring_num; i++) {
2174                 node = cpu_to_node(i % num_online_cpus());
2175                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2176                                       prof->rx_ring_size, i, RX, node))
2177                         goto err;
2178
2179                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2180                                            prof->rx_ring_size, priv->stride,
2181                                            node, i))
2182                         goto err;
2183
2184         }
2185
2186 #ifdef CONFIG_RFS_ACCEL
2187         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2188 #endif
2189
2190         return 0;
2191
2192 err:
2193         en_err(priv, "Failed to allocate NIC resources\n");
2194         for (i = 0; i < priv->rx_ring_num; i++) {
2195                 if (priv->rx_ring[i])
2196                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2197                                                 prof->rx_ring_size,
2198                                                 priv->stride);
2199                 if (priv->rx_cq[i])
2200                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2201         }
2202         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2203                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2204                         if (priv->tx_ring[t][i])
2205                                 mlx4_en_destroy_tx_ring(priv,
2206                                                         &priv->tx_ring[t][i]);
2207                         if (priv->tx_cq[t][i])
2208                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2209                 }
2210         }
2211         return -ENOMEM;
2212 }
2213
2214
2215 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2216                              struct mlx4_en_priv *src,
2217                              struct mlx4_en_port_profile *prof)
2218 {
2219         int t;
2220
2221         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2222                sizeof(dst->hwtstamp_config));
2223         dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2224         dst->rx_ring_num = prof->rx_ring_num;
2225         dst->flags = prof->flags;
2226         dst->mdev = src->mdev;
2227         dst->port = src->port;
2228         dst->dev = src->dev;
2229         dst->prof = prof;
2230         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2231                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2232
2233         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2234                 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2235                 if (!dst->tx_ring_num[t])
2236                         continue;
2237
2238                 dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2239                                           sizeof(struct mlx4_en_tx_ring *),
2240                                           GFP_KERNEL);
2241                 if (!dst->tx_ring[t])
2242                         goto err_free_tx;
2243
2244                 dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2245                                         sizeof(struct mlx4_en_cq *),
2246                                         GFP_KERNEL);
2247                 if (!dst->tx_cq[t]) {
2248                         kfree(dst->tx_ring[t]);
2249                         goto err_free_tx;
2250                 }
2251         }
2252
2253         return 0;
2254
2255 err_free_tx:
2256         while (t--) {
2257                 kfree(dst->tx_ring[t]);
2258                 kfree(dst->tx_cq[t]);
2259         }
2260         return -ENOMEM;
2261 }
2262
2263 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2264                                 struct mlx4_en_priv *src)
2265 {
2266         int t;
2267         memcpy(dst->rx_ring, src->rx_ring,
2268                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2269         memcpy(dst->rx_cq, src->rx_cq,
2270                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2271         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2272                sizeof(dst->hwtstamp_config));
2273         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2274                 dst->tx_ring_num[t] = src->tx_ring_num[t];
2275                 dst->tx_ring[t] = src->tx_ring[t];
2276                 dst->tx_cq[t] = src->tx_cq[t];
2277         }
2278         dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2279         dst->rx_ring_num = src->rx_ring_num;
2280         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2281 }
2282
2283 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2284                                 struct mlx4_en_priv *tmp,
2285                                 struct mlx4_en_port_profile *prof,
2286                                 bool carry_xdp_prog)
2287 {
2288         struct bpf_prog *xdp_prog;
2289         int i, t;
2290
2291         mlx4_en_copy_priv(tmp, priv, prof);
2292
2293         if (mlx4_en_alloc_resources(tmp)) {
2294                 en_warn(priv,
2295                         "%s: Resource allocation failed, using previous configuration\n",
2296                         __func__);
2297                 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2298                         kfree(tmp->tx_ring[t]);
2299                         kfree(tmp->tx_cq[t]);
2300                 }
2301                 return -ENOMEM;
2302         }
2303
2304         /* All rx_rings has the same xdp_prog.  Pick the first one. */
2305         xdp_prog = rcu_dereference_protected(
2306                 priv->rx_ring[0]->xdp_prog,
2307                 lockdep_is_held(&priv->mdev->state_lock));
2308
2309         if (xdp_prog && carry_xdp_prog) {
2310                 bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2311                 for (i = 0; i < tmp->rx_ring_num; i++)
2312                         rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2313                                            xdp_prog);
2314         }
2315
2316         return 0;
2317 }
2318
2319 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2320                                     struct mlx4_en_priv *tmp)
2321 {
2322         mlx4_en_free_resources(priv);
2323         mlx4_en_update_priv(priv, tmp);
2324 }
2325
2326 void mlx4_en_destroy_netdev(struct net_device *dev)
2327 {
2328         struct mlx4_en_priv *priv = netdev_priv(dev);
2329         struct mlx4_en_dev *mdev = priv->mdev;
2330
2331         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2332
2333         /* Unregister device - this will close the port if it was up */
2334         if (priv->registered) {
2335                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2336                                                               priv->port));
2337                 unregister_netdev(dev);
2338         }
2339
2340         if (priv->allocated)
2341                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2342
2343         cancel_delayed_work(&priv->stats_task);
2344         cancel_delayed_work(&priv->service_task);
2345         /* flush any pending task for this netdev */
2346         flush_workqueue(mdev->workqueue);
2347
2348         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2349                 mlx4_en_remove_timestamp(mdev);
2350
2351         /* Detach the netdev so tasks would not attempt to access it */
2352         mutex_lock(&mdev->state_lock);
2353         mdev->pndev[priv->port] = NULL;
2354         mdev->upper[priv->port] = NULL;
2355
2356 #ifdef CONFIG_RFS_ACCEL
2357         mlx4_en_cleanup_filters(priv);
2358 #endif
2359
2360         mlx4_en_free_resources(priv);
2361         mutex_unlock(&mdev->state_lock);
2362
2363         free_netdev(dev);
2364 }
2365
2366 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2367 {
2368         struct mlx4_en_priv *priv = netdev_priv(dev);
2369
2370         if (mtu > MLX4_EN_MAX_XDP_MTU) {
2371                 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2372                        mtu, MLX4_EN_MAX_XDP_MTU);
2373                 return false;
2374         }
2375
2376         return true;
2377 }
2378
2379 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2380 {
2381         struct mlx4_en_priv *priv = netdev_priv(dev);
2382         struct mlx4_en_dev *mdev = priv->mdev;
2383         int err = 0;
2384
2385         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2386                  dev->mtu, new_mtu);
2387
2388         if (priv->tx_ring_num[TX_XDP] &&
2389             !mlx4_en_check_xdp_mtu(dev, new_mtu))
2390                 return -EOPNOTSUPP;
2391
2392         dev->mtu = new_mtu;
2393
2394         if (netif_running(dev)) {
2395                 mutex_lock(&mdev->state_lock);
2396                 if (!mdev->device_up) {
2397                         /* NIC is probably restarting - let restart task reset
2398                          * the port */
2399                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2400                 } else {
2401                         mlx4_en_stop_port(dev, 1);
2402                         err = mlx4_en_start_port(dev);
2403                         if (err) {
2404                                 en_err(priv, "Failed restarting port:%d\n",
2405                                          priv->port);
2406                                 if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING,
2407                                                       &priv->state))
2408                                         queue_work(mdev->workqueue, &priv->restart_task);
2409                         }
2410                 }
2411                 mutex_unlock(&mdev->state_lock);
2412         }
2413         return 0;
2414 }
2415
2416 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2417 {
2418         struct mlx4_en_priv *priv = netdev_priv(dev);
2419         struct mlx4_en_dev *mdev = priv->mdev;
2420         struct hwtstamp_config config;
2421
2422         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2423                 return -EFAULT;
2424
2425         /* reserved for future extensions */
2426         if (config.flags)
2427                 return -EINVAL;
2428
2429         /* device doesn't support time stamping */
2430         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2431                 return -EINVAL;
2432
2433         /* TX HW timestamp */
2434         switch (config.tx_type) {
2435         case HWTSTAMP_TX_OFF:
2436         case HWTSTAMP_TX_ON:
2437                 break;
2438         default:
2439                 return -ERANGE;
2440         }
2441
2442         /* RX HW timestamp */
2443         switch (config.rx_filter) {
2444         case HWTSTAMP_FILTER_NONE:
2445                 break;
2446         case HWTSTAMP_FILTER_ALL:
2447         case HWTSTAMP_FILTER_SOME:
2448         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2449         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2450         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2451         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2452         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2453         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2454         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2455         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2456         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2457         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2458         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2459         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2460         case HWTSTAMP_FILTER_NTP_ALL:
2461                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2462                 break;
2463         default:
2464                 return -ERANGE;
2465         }
2466
2467         if (mlx4_en_reset_config(dev, config, dev->features)) {
2468                 config.tx_type = HWTSTAMP_TX_OFF;
2469                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2470         }
2471
2472         return copy_to_user(ifr->ifr_data, &config,
2473                             sizeof(config)) ? -EFAULT : 0;
2474 }
2475
2476 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2477 {
2478         struct mlx4_en_priv *priv = netdev_priv(dev);
2479
2480         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2481                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2482 }
2483
2484 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2485 {
2486         switch (cmd) {
2487         case SIOCSHWTSTAMP:
2488                 return mlx4_en_hwtstamp_set(dev, ifr);
2489         case SIOCGHWTSTAMP:
2490                 return mlx4_en_hwtstamp_get(dev, ifr);
2491         default:
2492                 return -EOPNOTSUPP;
2493         }
2494 }
2495
2496 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2497                                               netdev_features_t features)
2498 {
2499         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2500         struct mlx4_en_dev *mdev = en_priv->mdev;
2501
2502         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2503          * enable/disable make sure S-TAG flag is always in same state as
2504          * C-TAG.
2505          */
2506         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2507             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2508                 features |= NETIF_F_HW_VLAN_STAG_RX;
2509         else
2510                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2511
2512         return features;
2513 }
2514
2515 static int mlx4_en_set_features(struct net_device *netdev,
2516                 netdev_features_t features)
2517 {
2518         struct mlx4_en_priv *priv = netdev_priv(netdev);
2519         bool reset = false;
2520         int ret = 0;
2521
2522         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2523                 en_info(priv, "Turn %s RX-FCS\n",
2524                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2525                 reset = true;
2526         }
2527
2528         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2529                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2530
2531                 en_info(priv, "Turn %s RX-ALL\n",
2532                         ignore_fcs_value ? "ON" : "OFF");
2533                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2534                                               priv->port, ignore_fcs_value);
2535                 if (ret)
2536                         return ret;
2537         }
2538
2539         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2540                 en_info(priv, "Turn %s RX vlan strip offload\n",
2541                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2542                 reset = true;
2543         }
2544
2545         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2546                 en_info(priv, "Turn %s TX vlan strip offload\n",
2547                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2548
2549         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2550                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2551                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2552
2553         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2554                 en_info(priv, "Turn %s loopback\n",
2555                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2556                 mlx4_en_update_loopback_state(netdev, features);
2557         }
2558
2559         if (reset) {
2560                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2561                                            features);
2562                 if (ret)
2563                         return ret;
2564         }
2565
2566         return 0;
2567 }
2568
2569 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2570 {
2571         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2572         struct mlx4_en_dev *mdev = en_priv->mdev;
2573
2574         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac);
2575 }
2576
2577 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2578                                __be16 vlan_proto)
2579 {
2580         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2581         struct mlx4_en_dev *mdev = en_priv->mdev;
2582
2583         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2584                                 vlan_proto);
2585 }
2586
2587 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2588                                int max_tx_rate)
2589 {
2590         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2591         struct mlx4_en_dev *mdev = en_priv->mdev;
2592
2593         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2594                                 max_tx_rate);
2595 }
2596
2597 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2598 {
2599         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2600         struct mlx4_en_dev *mdev = en_priv->mdev;
2601
2602         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2603 }
2604
2605 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2606 {
2607         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2608         struct mlx4_en_dev *mdev = en_priv->mdev;
2609
2610         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2611 }
2612
2613 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2614 {
2615         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2616         struct mlx4_en_dev *mdev = en_priv->mdev;
2617
2618         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2619 }
2620
2621 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2622                                 struct ifla_vf_stats *vf_stats)
2623 {
2624         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2625         struct mlx4_en_dev *mdev = en_priv->mdev;
2626
2627         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2628 }
2629
2630 #define PORT_ID_BYTE_LEN 8
2631 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2632                                     struct netdev_phys_item_id *ppid)
2633 {
2634         struct mlx4_en_priv *priv = netdev_priv(dev);
2635         struct mlx4_dev *mdev = priv->mdev->dev;
2636         int i;
2637         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2638
2639         if (!phys_port_id)
2640                 return -EOPNOTSUPP;
2641
2642         ppid->id_len = sizeof(phys_port_id);
2643         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2644                 ppid->id[i] =  phys_port_id & 0xff;
2645                 phys_port_id >>= 8;
2646         }
2647         return 0;
2648 }
2649
2650 static int mlx4_udp_tunnel_sync(struct net_device *dev, unsigned int table)
2651 {
2652         struct mlx4_en_priv *priv = netdev_priv(dev);
2653         struct udp_tunnel_info ti;
2654         int ret;
2655
2656         udp_tunnel_nic_get_port(dev, table, 0, &ti);
2657         priv->vxlan_port = ti.port;
2658
2659         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2660         if (ret)
2661                 return ret;
2662
2663         return mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2664                                    VXLAN_STEER_BY_OUTER_MAC,
2665                                    !!priv->vxlan_port);
2666 }
2667
2668 static const struct udp_tunnel_nic_info mlx4_udp_tunnels = {
2669         .sync_table     = mlx4_udp_tunnel_sync,
2670         .flags          = UDP_TUNNEL_NIC_INFO_MAY_SLEEP |
2671                           UDP_TUNNEL_NIC_INFO_IPV4_ONLY,
2672         .tables         = {
2673                 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, },
2674         },
2675 };
2676
2677 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2678                                                 struct net_device *dev,
2679                                                 netdev_features_t features)
2680 {
2681         features = vlan_features_check(skb, features);
2682         features = vxlan_features_check(skb, features);
2683
2684         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2685          * support inner IPv6 checksums and segmentation so  we need to
2686          * strip that feature if this is an IPv6 encapsulated frame.
2687          */
2688         if (skb->encapsulation &&
2689             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2690                 struct mlx4_en_priv *priv = netdev_priv(dev);
2691
2692                 if (!priv->vxlan_port ||
2693                     (ip_hdr(skb)->version != 4) ||
2694                     (udp_hdr(skb)->dest != priv->vxlan_port))
2695                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2696         }
2697
2698         return features;
2699 }
2700
2701 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2702 {
2703         struct mlx4_en_priv *priv = netdev_priv(dev);
2704         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2705         struct mlx4_update_qp_params params;
2706         int err;
2707
2708         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2709                 return -EOPNOTSUPP;
2710
2711         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2712         if (maxrate >> 12) {
2713                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2714                 params.rate_val  = maxrate / 1000;
2715         } else if (maxrate) {
2716                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2717                 params.rate_val  = maxrate;
2718         } else { /* zero serves to revoke the QP rate-limitation */
2719                 params.rate_unit = 0;
2720                 params.rate_val  = 0;
2721         }
2722
2723         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2724                              &params);
2725         return err;
2726 }
2727
2728 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2729 {
2730         struct mlx4_en_priv *priv = netdev_priv(dev);
2731         struct mlx4_en_dev *mdev = priv->mdev;
2732         struct mlx4_en_port_profile new_prof;
2733         struct bpf_prog *old_prog;
2734         struct mlx4_en_priv *tmp;
2735         int tx_changed = 0;
2736         int xdp_ring_num;
2737         int port_up = 0;
2738         int err;
2739         int i;
2740
2741         xdp_ring_num = prog ? priv->rx_ring_num : 0;
2742
2743         /* No need to reconfigure buffers when simply swapping the
2744          * program for a new one.
2745          */
2746         if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2747                 if (prog)
2748                         bpf_prog_add(prog, priv->rx_ring_num - 1);
2749
2750                 mutex_lock(&mdev->state_lock);
2751                 for (i = 0; i < priv->rx_ring_num; i++) {
2752                         old_prog = rcu_dereference_protected(
2753                                         priv->rx_ring[i]->xdp_prog,
2754                                         lockdep_is_held(&mdev->state_lock));
2755                         rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2756                         if (old_prog)
2757                                 bpf_prog_put(old_prog);
2758                 }
2759                 mutex_unlock(&mdev->state_lock);
2760                 return 0;
2761         }
2762
2763         if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2764                 return -EOPNOTSUPP;
2765
2766         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2767         if (!tmp)
2768                 return -ENOMEM;
2769
2770         if (prog)
2771                 bpf_prog_add(prog, priv->rx_ring_num - 1);
2772
2773         mutex_lock(&mdev->state_lock);
2774         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2775         new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2776
2777         if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2778                 tx_changed = 1;
2779                 new_prof.tx_ring_num[TX] =
2780                         MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2781                 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2782         }
2783
2784         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2785         if (err) {
2786                 if (prog)
2787                         bpf_prog_sub(prog, priv->rx_ring_num - 1);
2788                 goto unlock_out;
2789         }
2790
2791         if (priv->port_up) {
2792                 port_up = 1;
2793                 mlx4_en_stop_port(dev, 1);
2794         }
2795
2796         mlx4_en_safe_replace_resources(priv, tmp);
2797         if (tx_changed)
2798                 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2799
2800         for (i = 0; i < priv->rx_ring_num; i++) {
2801                 old_prog = rcu_dereference_protected(
2802                                         priv->rx_ring[i]->xdp_prog,
2803                                         lockdep_is_held(&mdev->state_lock));
2804                 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2805                 if (old_prog)
2806                         bpf_prog_put(old_prog);
2807         }
2808
2809         if (port_up) {
2810                 err = mlx4_en_start_port(dev);
2811                 if (err) {
2812                         en_err(priv, "Failed starting port %d for XDP change\n",
2813                                priv->port);
2814                         if (!test_and_set_bit(MLX4_EN_STATE_FLAG_RESTARTING, &priv->state))
2815                                 queue_work(mdev->workqueue, &priv->restart_task);
2816                 }
2817         }
2818
2819 unlock_out:
2820         mutex_unlock(&mdev->state_lock);
2821         kfree(tmp);
2822         return err;
2823 }
2824
2825 static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2826 {
2827         switch (xdp->command) {
2828         case XDP_SETUP_PROG:
2829                 return mlx4_xdp_set(dev, xdp->prog);
2830         default:
2831                 return -EINVAL;
2832         }
2833 }
2834
2835 static const struct net_device_ops mlx4_netdev_ops = {
2836         .ndo_open               = mlx4_en_open,
2837         .ndo_stop               = mlx4_en_close,
2838         .ndo_start_xmit         = mlx4_en_xmit,
2839         .ndo_select_queue       = mlx4_en_select_queue,
2840         .ndo_get_stats64        = mlx4_en_get_stats64,
2841         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2842         .ndo_set_mac_address    = mlx4_en_set_mac,
2843         .ndo_validate_addr      = eth_validate_addr,
2844         .ndo_change_mtu         = mlx4_en_change_mtu,
2845         .ndo_eth_ioctl          = mlx4_en_ioctl,
2846         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2847         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2848         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2849         .ndo_set_features       = mlx4_en_set_features,
2850         .ndo_fix_features       = mlx4_en_fix_features,
2851         .ndo_setup_tc           = __mlx4_en_setup_tc,
2852 #ifdef CONFIG_RFS_ACCEL
2853         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2854 #endif
2855         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2856         .ndo_features_check     = mlx4_en_features_check,
2857         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2858         .ndo_bpf                = mlx4_xdp,
2859 };
2860
2861 static const struct net_device_ops mlx4_netdev_ops_master = {
2862         .ndo_open               = mlx4_en_open,
2863         .ndo_stop               = mlx4_en_close,
2864         .ndo_start_xmit         = mlx4_en_xmit,
2865         .ndo_select_queue       = mlx4_en_select_queue,
2866         .ndo_get_stats64        = mlx4_en_get_stats64,
2867         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2868         .ndo_set_mac_address    = mlx4_en_set_mac,
2869         .ndo_validate_addr      = eth_validate_addr,
2870         .ndo_change_mtu         = mlx4_en_change_mtu,
2871         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2872         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2873         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2874         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2875         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2876         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2877         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2878         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2879         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2880         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2881         .ndo_set_features       = mlx4_en_set_features,
2882         .ndo_fix_features       = mlx4_en_fix_features,
2883         .ndo_setup_tc           = __mlx4_en_setup_tc,
2884 #ifdef CONFIG_RFS_ACCEL
2885         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2886 #endif
2887         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2888         .ndo_features_check     = mlx4_en_features_check,
2889         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2890         .ndo_bpf                = mlx4_xdp,
2891 };
2892
2893 struct mlx4_en_bond {
2894         struct work_struct work;
2895         struct mlx4_en_priv *priv;
2896         int is_bonded;
2897         struct mlx4_port_map port_map;
2898 };
2899
2900 static void mlx4_en_bond_work(struct work_struct *work)
2901 {
2902         struct mlx4_en_bond *bond = container_of(work,
2903                                                      struct mlx4_en_bond,
2904                                                      work);
2905         int err = 0;
2906         struct mlx4_dev *dev = bond->priv->mdev->dev;
2907
2908         if (bond->is_bonded) {
2909                 if (!mlx4_is_bonded(dev)) {
2910                         err = mlx4_bond(dev);
2911                         if (err)
2912                                 en_err(bond->priv, "Fail to bond device\n");
2913                 }
2914                 if (!err) {
2915                         err = mlx4_port_map_set(dev, &bond->port_map);
2916                         if (err)
2917                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2918                                        bond->port_map.port1,
2919                                        bond->port_map.port2,
2920                                        err);
2921                 }
2922         } else if (mlx4_is_bonded(dev)) {
2923                 err = mlx4_unbond(dev);
2924                 if (err)
2925                         en_err(bond->priv, "Fail to unbond device\n");
2926         }
2927         dev_put(bond->priv->dev);
2928         kfree(bond);
2929 }
2930
2931 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2932                                    u8 v2p_p1, u8 v2p_p2)
2933 {
2934         struct mlx4_en_bond *bond = NULL;
2935
2936         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2937         if (!bond)
2938                 return -ENOMEM;
2939
2940         INIT_WORK(&bond->work, mlx4_en_bond_work);
2941         bond->priv = priv;
2942         bond->is_bonded = is_bonded;
2943         bond->port_map.port1 = v2p_p1;
2944         bond->port_map.port2 = v2p_p2;
2945         dev_hold(priv->dev);
2946         queue_work(priv->mdev->workqueue, &bond->work);
2947         return 0;
2948 }
2949
2950 int mlx4_en_netdev_event(struct notifier_block *this,
2951                          unsigned long event, void *ptr)
2952 {
2953         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2954         u8 port = 0;
2955         struct mlx4_en_dev *mdev;
2956         struct mlx4_dev *dev;
2957         int i, num_eth_ports = 0;
2958         bool do_bond = true;
2959         struct mlx4_en_priv *priv;
2960         u8 v2p_port1 = 0;
2961         u8 v2p_port2 = 0;
2962
2963         if (!net_eq(dev_net(ndev), &init_net))
2964                 return NOTIFY_DONE;
2965
2966         mdev = container_of(this, struct mlx4_en_dev, nb);
2967         dev = mdev->dev;
2968
2969         /* Go into this mode only when two network devices set on two ports
2970          * of the same mlx4 device are slaves of the same bonding master
2971          */
2972         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2973                 ++num_eth_ports;
2974                 if (!port && (mdev->pndev[i] == ndev))
2975                         port = i;
2976                 mdev->upper[i] = mdev->pndev[i] ?
2977                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2978                 /* condition not met: network device is a slave */
2979                 if (!mdev->upper[i])
2980                         do_bond = false;
2981                 if (num_eth_ports < 2)
2982                         continue;
2983                 /* condition not met: same master */
2984                 if (mdev->upper[i] != mdev->upper[i-1])
2985                         do_bond = false;
2986         }
2987         /* condition not met: 2 salves */
2988         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2989
2990         /* handle only events that come with enough info */
2991         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2992                 return NOTIFY_DONE;
2993
2994         priv = netdev_priv(ndev);
2995         if (do_bond) {
2996                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2997                 struct netdev_bonding_info *bonding_info =
2998                         &notifier_info->bonding_info;
2999
3000                 /* required mode 1, 2 or 4 */
3001                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
3002                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
3003                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
3004                         do_bond = false;
3005
3006                 /* require exactly 2 slaves */
3007                 if (bonding_info->master.num_slaves != 2)
3008                         do_bond = false;
3009
3010                 /* calc v2p */
3011                 if (do_bond) {
3012                         if (bonding_info->master.bond_mode ==
3013                             BOND_MODE_ACTIVEBACKUP) {
3014                                 /* in active-backup mode virtual ports are
3015                                  * mapped to the physical port of the active
3016                                  * slave */
3017                                 if (bonding_info->slave.state ==
3018                                     BOND_STATE_BACKUP) {
3019                                         if (port == 1) {
3020                                                 v2p_port1 = 2;
3021                                                 v2p_port2 = 2;
3022                                         } else {
3023                                                 v2p_port1 = 1;
3024                                                 v2p_port2 = 1;
3025                                         }
3026                                 } else { /* BOND_STATE_ACTIVE */
3027                                         if (port == 1) {
3028                                                 v2p_port1 = 1;
3029                                                 v2p_port2 = 1;
3030                                         } else {
3031                                                 v2p_port1 = 2;
3032                                                 v2p_port2 = 2;
3033                                         }
3034                                 }
3035                         } else { /* Active-Active */
3036                                 /* in active-active mode a virtual port is
3037                                  * mapped to the native physical port if and only
3038                                  * if the physical port is up */
3039                                 __s8 link = bonding_info->slave.link;
3040
3041                                 if (port == 1)
3042                                         v2p_port2 = 2;
3043                                 else
3044                                         v2p_port1 = 1;
3045                                 if ((link == BOND_LINK_UP) ||
3046                                     (link == BOND_LINK_FAIL)) {
3047                                         if (port == 1)
3048                                                 v2p_port1 = 1;
3049                                         else
3050                                                 v2p_port2 = 2;
3051                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3052                                         if (port == 1)
3053                                                 v2p_port1 = 2;
3054                                         else
3055                                                 v2p_port2 = 1;
3056                                 }
3057                         }
3058                 }
3059         }
3060
3061         mlx4_en_queue_bond_work(priv, do_bond,
3062                                 v2p_port1, v2p_port2);
3063
3064         return NOTIFY_DONE;
3065 }
3066
3067 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3068                                      struct mlx4_en_stats_bitmap *stats_bitmap,
3069                                      u8 rx_ppp, u8 rx_pause,
3070                                      u8 tx_ppp, u8 tx_pause)
3071 {
3072         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3073
3074         if (!mlx4_is_slave(dev) &&
3075             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3076                 mutex_lock(&stats_bitmap->mutex);
3077                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3078
3079                 if (rx_ppp)
3080                         bitmap_set(stats_bitmap->bitmap, last_i,
3081                                    NUM_FLOW_PRIORITY_STATS_RX);
3082                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3083
3084                 if (rx_pause && !(rx_ppp))
3085                         bitmap_set(stats_bitmap->bitmap, last_i,
3086                                    NUM_FLOW_STATS_RX);
3087                 last_i += NUM_FLOW_STATS_RX;
3088
3089                 if (tx_ppp)
3090                         bitmap_set(stats_bitmap->bitmap, last_i,
3091                                    NUM_FLOW_PRIORITY_STATS_TX);
3092                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3093
3094                 if (tx_pause && !(tx_ppp))
3095                         bitmap_set(stats_bitmap->bitmap, last_i,
3096                                    NUM_FLOW_STATS_TX);
3097                 last_i += NUM_FLOW_STATS_TX;
3098
3099                 mutex_unlock(&stats_bitmap->mutex);
3100         }
3101 }
3102
3103 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3104                               struct mlx4_en_stats_bitmap *stats_bitmap,
3105                               u8 rx_ppp, u8 rx_pause,
3106                               u8 tx_ppp, u8 tx_pause)
3107 {
3108         int last_i = 0;
3109
3110         mutex_init(&stats_bitmap->mutex);
3111         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3112
3113         if (mlx4_is_slave(dev)) {
3114                 bitmap_set(stats_bitmap->bitmap, last_i +
3115                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3116                 bitmap_set(stats_bitmap->bitmap, last_i +
3117                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3118                 bitmap_set(stats_bitmap->bitmap, last_i +
3119                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3120                 bitmap_set(stats_bitmap->bitmap, last_i +
3121                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3122                 bitmap_set(stats_bitmap->bitmap, last_i +
3123                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3124                 bitmap_set(stats_bitmap->bitmap, last_i +
3125                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3126         } else {
3127                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3128         }
3129         last_i += NUM_MAIN_STATS;
3130
3131         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3132         last_i += NUM_PORT_STATS;
3133
3134         if (mlx4_is_master(dev))
3135                 bitmap_set(stats_bitmap->bitmap, last_i,
3136                            NUM_PF_STATS);
3137         last_i += NUM_PF_STATS;
3138
3139         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3140                                         rx_ppp, rx_pause,
3141                                         tx_ppp, tx_pause);
3142         last_i += NUM_FLOW_STATS;
3143
3144         if (!mlx4_is_slave(dev))
3145                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3146         last_i += NUM_PKT_STATS;
3147
3148         bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3149         last_i += NUM_XDP_STATS;
3150
3151         if (!mlx4_is_slave(dev))
3152                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS);
3153         last_i += NUM_PHY_STATS;
3154 }
3155
3156 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3157                         struct mlx4_en_port_profile *prof)
3158 {
3159         struct net_device *dev;
3160         struct mlx4_en_priv *priv;
3161         int i, t;
3162         int err;
3163
3164         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3165                                  MAX_TX_RINGS, MAX_RX_RINGS);
3166         if (dev == NULL)
3167                 return -ENOMEM;
3168
3169         netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3170         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3171
3172         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3173         dev->dev_port = port - 1;
3174
3175         /*
3176          * Initialize driver private data
3177          */
3178
3179         priv = netdev_priv(dev);
3180         memset(priv, 0, sizeof(struct mlx4_en_priv));
3181         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3182         spin_lock_init(&priv->stats_lock);
3183         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3184         INIT_WORK(&priv->restart_task, mlx4_en_restart);
3185         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate_work);
3186         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3187         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3188 #ifdef CONFIG_RFS_ACCEL
3189         INIT_LIST_HEAD(&priv->filters);
3190         spin_lock_init(&priv->filters_lock);
3191 #endif
3192
3193         priv->dev = dev;
3194         priv->mdev = mdev;
3195         priv->ddev = &mdev->pdev->dev;
3196         priv->prof = prof;
3197         priv->port = port;
3198         priv->port_up = false;
3199         priv->flags = prof->flags;
3200         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3201         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3202                         MLX4_WQE_CTRL_SOLICITED);
3203         priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3204         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3205         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3206
3207         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3208                 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3209                 if (!priv->tx_ring_num[t])
3210                         continue;
3211
3212                 priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3213                                            sizeof(struct mlx4_en_tx_ring *),
3214                                            GFP_KERNEL);
3215                 if (!priv->tx_ring[t]) {
3216                         err = -ENOMEM;
3217                         goto out;
3218                 }
3219                 priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3220                                          sizeof(struct mlx4_en_cq *),
3221                                          GFP_KERNEL);
3222                 if (!priv->tx_cq[t]) {
3223                         err = -ENOMEM;
3224                         goto out;
3225                 }
3226         }
3227         priv->rx_ring_num = prof->rx_ring_num;
3228         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3229         priv->cqe_size = mdev->dev->caps.cqe_size;
3230         priv->mac_index = -1;
3231         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3232 #ifdef CONFIG_MLX4_EN_DCB
3233         if (!mlx4_is_slave(priv->mdev->dev)) {
3234                 u8 prio;
3235
3236                 for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3237                         priv->ets.prio_tc[prio] = prio;
3238                         priv->ets.tc_tsa[prio]  = IEEE_8021QAZ_TSA_VENDOR;
3239                 }
3240
3241                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3242                         DCB_CAP_DCBX_VER_IEEE;
3243                 priv->flags |= MLX4_EN_DCB_ENABLED;
3244                 priv->cee_config.pfc_state = false;
3245
3246                 for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3247                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3248
3249                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3250                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3251                 } else {
3252                         en_info(priv, "enabling only PFC DCB ops\n");
3253                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3254                 }
3255         }
3256 #endif
3257
3258         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3259                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3260
3261         /* Query for default mac and max mtu */
3262         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3263
3264         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3265             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3266                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3267
3268         /* Set default MAC */
3269         dev->addr_len = ETH_ALEN;
3270         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3271         if (!is_valid_ether_addr(dev->dev_addr)) {
3272                 en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3273                        priv->port, dev->dev_addr);
3274                 err = -EINVAL;
3275                 goto out;
3276         } else if (mlx4_is_slave(priv->mdev->dev) &&
3277                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3278                 /* Random MAC was assigned in mlx4_slave_cap
3279                  * in mlx4_core module
3280                  */
3281                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3282                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3283         }
3284
3285         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3286
3287         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3288                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3289         err = mlx4_en_alloc_resources(priv);
3290         if (err)
3291                 goto out;
3292
3293         /* Initialize time stamping config */
3294         priv->hwtstamp_config.flags = 0;
3295         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3296         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3297
3298         /* Allocate page for receive rings */
3299         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3300                                 MLX4_EN_PAGE_SIZE);
3301         if (err) {
3302                 en_err(priv, "Failed to allocate page for rx qps\n");
3303                 goto out;
3304         }
3305         priv->allocated = 1;
3306
3307         /*
3308          * Initialize netdev entry points
3309          */
3310         if (mlx4_is_master(priv->mdev->dev))
3311                 dev->netdev_ops = &mlx4_netdev_ops_master;
3312         else
3313                 dev->netdev_ops = &mlx4_netdev_ops;
3314         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3315         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3316         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3317
3318         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3319
3320         /*
3321          * Set driver features
3322          */
3323         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3324         if (mdev->LSO_support)
3325                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3326
3327         if (mdev->dev->caps.tunnel_offload_mode ==
3328             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3329                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3330                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3331                                     NETIF_F_GSO_PARTIAL;
3332                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3333                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3334                                     NETIF_F_GSO_PARTIAL;
3335                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3336                 dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3337                                        NETIF_F_RXCSUM |
3338                                        NETIF_F_TSO | NETIF_F_TSO6 |
3339                                        NETIF_F_GSO_UDP_TUNNEL |
3340                                        NETIF_F_GSO_UDP_TUNNEL_CSUM |
3341                                        NETIF_F_GSO_PARTIAL;
3342
3343                 dev->udp_tunnel_nic_info = &mlx4_udp_tunnels;
3344         }
3345
3346         dev->vlan_features = dev->hw_features;
3347
3348         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3349         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3350                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3351                         NETIF_F_HW_VLAN_CTAG_FILTER;
3352         dev->hw_features |= NETIF_F_LOOPBACK |
3353                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3354
3355         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3356                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3357                         NETIF_F_HW_VLAN_STAG_FILTER;
3358                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3359         }
3360
3361         if (mlx4_is_slave(mdev->dev)) {
3362                 bool vlan_offload_disabled;
3363                 int phv;
3364
3365                 err = get_phv_bit(mdev->dev, port, &phv);
3366                 if (!err && phv) {
3367                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3368                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3369                 }
3370                 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3371                                                         &vlan_offload_disabled);
3372                 if (!err && vlan_offload_disabled) {
3373                         dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3374                                               NETIF_F_HW_VLAN_CTAG_RX |
3375                                               NETIF_F_HW_VLAN_STAG_TX |
3376                                               NETIF_F_HW_VLAN_STAG_RX);
3377                         dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3378                                            NETIF_F_HW_VLAN_CTAG_RX |
3379                                            NETIF_F_HW_VLAN_STAG_TX |
3380                                            NETIF_F_HW_VLAN_STAG_RX);
3381                 }
3382         } else {
3383                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3384                     !(mdev->dev->caps.flags2 &
3385                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3386                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3387         }
3388
3389         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3390                 dev->hw_features |= NETIF_F_RXFCS;
3391
3392         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3393                 dev->hw_features |= NETIF_F_RXALL;
3394
3395         if (mdev->dev->caps.steering_mode ==
3396             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3397             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3398                 dev->hw_features |= NETIF_F_NTUPLE;
3399
3400         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3401                 dev->priv_flags |= IFF_UNICAST_FLT;
3402
3403         /* Setting a default hash function value */
3404         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3405                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3406         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3407                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3408         } else {
3409                 en_warn(priv,
3410                         "No RSS hash capabilities exposed, using Toeplitz\n");
3411                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3412         }
3413
3414         /* MTU range: 68 - hw-specific max */
3415         dev->min_mtu = ETH_MIN_MTU;
3416         dev->max_mtu = priv->max_mtu;
3417
3418         mdev->pndev[port] = dev;
3419         mdev->upper[port] = NULL;
3420
3421         netif_carrier_off(dev);
3422         mlx4_en_set_default_moderation(priv);
3423
3424         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3425         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3426
3427         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3428
3429         /* Configure port */
3430         mlx4_en_calc_rx_buf(dev);
3431         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3432                                     priv->rx_skb_size + ETH_FCS_LEN,
3433                                     prof->tx_pause, prof->tx_ppp,
3434                                     prof->rx_pause, prof->rx_ppp);
3435         if (err) {
3436                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3437                        priv->port, err);
3438                 goto out;
3439         }
3440
3441         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3442                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3443                 if (err) {
3444                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3445                                err);
3446                         goto out;
3447                 }
3448         }
3449
3450         /* Init port */
3451         en_warn(priv, "Initializing port\n");
3452         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3453         if (err) {
3454                 en_err(priv, "Failed Initializing port\n");
3455                 goto out;
3456         }
3457         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3458
3459         /* Initialize time stamp mechanism */
3460         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3461                 mlx4_en_init_timestamp(mdev);
3462
3463         queue_delayed_work(mdev->workqueue, &priv->service_task,
3464                            SERVICE_TASK_DELAY);
3465
3466         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3467                                  mdev->profile.prof[priv->port].rx_ppp,
3468                                  mdev->profile.prof[priv->port].rx_pause,
3469                                  mdev->profile.prof[priv->port].tx_ppp,
3470                                  mdev->profile.prof[priv->port].tx_pause);
3471
3472         err = register_netdev(dev);
3473         if (err) {
3474                 en_err(priv, "Netdev registration failed for port %d\n", port);
3475                 goto out;
3476         }
3477
3478         priv->registered = 1;
3479         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3480                                   dev);
3481
3482         return 0;
3483
3484 out:
3485         mlx4_en_destroy_netdev(dev);
3486         return err;
3487 }
3488
3489 int mlx4_en_reset_config(struct net_device *dev,
3490                          struct hwtstamp_config ts_config,
3491                          netdev_features_t features)
3492 {
3493         struct mlx4_en_priv *priv = netdev_priv(dev);
3494         struct mlx4_en_dev *mdev = priv->mdev;
3495         struct mlx4_en_port_profile new_prof;
3496         struct mlx4_en_priv *tmp;
3497         int port_up = 0;
3498         int err = 0;
3499
3500         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3501             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3502             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3503             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3504                 return 0; /* Nothing to change */
3505
3506         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3507             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3508             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3509                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3510                 return -EINVAL;
3511         }
3512
3513         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3514         if (!tmp)
3515                 return -ENOMEM;
3516
3517         mutex_lock(&mdev->state_lock);
3518
3519         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3520         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3521
3522         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3523         if (err)
3524                 goto out;
3525
3526         if (priv->port_up) {
3527                 port_up = 1;
3528                 mlx4_en_stop_port(dev, 1);
3529         }
3530
3531         mlx4_en_safe_replace_resources(priv, tmp);
3532
3533         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3534                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3535                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3536                 else
3537                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3538         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3539                 /* RX time-stamping is OFF, update the RX vlan offload
3540                  * to the latest wanted state
3541                  */
3542                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3543                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3544                 else
3545                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3546         }
3547
3548         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3549                 if (features & NETIF_F_RXFCS)
3550                         dev->features |= NETIF_F_RXFCS;
3551                 else
3552                         dev->features &= ~NETIF_F_RXFCS;
3553         }
3554
3555         /* RX vlan offload and RX time-stamping can't co-exist !
3556          * Regardless of the caller's choice,
3557          * Turn Off RX vlan offload in case of time-stamping is ON
3558          */
3559         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3560                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3561                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3562                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3563         }
3564
3565         if (port_up) {
3566                 err = mlx4_en_start_port(dev);
3567                 if (err)
3568                         en_err(priv, "Failed starting port\n");
3569         }
3570
3571         if (!err)
3572                 err = mlx4_en_moderation_update(priv);
3573 out:
3574         mutex_unlock(&mdev->state_lock);
3575         kfree(tmp);
3576         if (!err)
3577                 netdev_features_change(dev);
3578         return err;
3579 }