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/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42 #include <net/vxlan.h>
  43
  44 #include <linux/mlx4/driver.h>
  45 #include <linux/mlx4/device.h>
  46 #include <linux/mlx4/cmd.h>
  47 #include <linux/mlx4/cq.h>
  48
  49 #include "mlx4_en.h"
  50 #include "en_port.h"
  51
  52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  53 {
  54         struct mlx4_en_priv *priv = netdev_priv(dev);
  55         int i;
  56         unsigned int offset = 0;
  57
  58         if (up && up != MLX4_EN_NUM_UP)
  59                 return -EINVAL;
  60
  61         netdev_set_num_tc(dev, up);
  62
  63         /* Partition Tx queues evenly amongst UP's */
  64         for (i = 0; i < up; i++) {
  65                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  66                 offset += priv->num_tx_rings_p_up;
  67         }
  68
  69         return 0;
  70 }
  71
  72 #ifdef CONFIG_RFS_ACCEL
  73
  74 struct mlx4_en_filter {
  75         struct list_head next;
  76         struct work_struct work;
  77
  78         u8     ip_proto;
  79         __be32 src_ip;
  80         __be32 dst_ip;
  81         __be16 src_port;
  82         __be16 dst_port;
  83
  84         int rxq_index;
  85         struct mlx4_en_priv *priv;
  86         u32 flow_id;                    /* RFS infrastructure id */
  87         int id;                         /* mlx4_en driver id */
  88         u64 reg_id;                     /* Flow steering API id */
  89         u8 activated;                   /* Used to prevent expiry before filter
  90                                          * is attached
  91                                          */
  92         struct hlist_node filter_chain;
  93 };
  94
  95 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
  96
  97 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
  98 {
  99         switch (ip_proto) {
 100         case IPPROTO_UDP:
 101                 return MLX4_NET_TRANS_RULE_ID_UDP;
 102         case IPPROTO_TCP:
 103                 return MLX4_NET_TRANS_RULE_ID_TCP;
 104         default:
 105                 return MLX4_NET_TRANS_RULE_NUM;
 106         }
 107 };
 108
 109 static void mlx4_en_filter_work(struct work_struct *work)
 110 {
 111         struct mlx4_en_filter *filter = container_of(work,
 112                                                      struct mlx4_en_filter,
 113                                                      work);
 114         struct mlx4_en_priv *priv = filter->priv;
 115         struct mlx4_spec_list spec_tcp_udp = {
 116                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 117                 {
 118                         .tcp_udp = {
 119                                 .dst_port = filter->dst_port,
 120                                 .dst_port_msk = (__force __be16)-1,
 121                                 .src_port = filter->src_port,
 122                                 .src_port_msk = (__force __be16)-1,
 123                         },
 124                 },
 125         };
 126         struct mlx4_spec_list spec_ip = {
 127                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 128                 {
 129                         .ipv4 = {
 130                                 .dst_ip = filter->dst_ip,
 131                                 .dst_ip_msk = (__force __be32)-1,
 132                                 .src_ip = filter->src_ip,
 133                                 .src_ip_msk = (__force __be32)-1,
 134                         },
 135                 },
 136         };
 137         struct mlx4_spec_list spec_eth = {
 138                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 139         };
 140         struct mlx4_net_trans_rule rule = {
 141                 .list = LIST_HEAD_INIT(rule.list),
 142                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 143                 .exclusive = 1,
 144                 .allow_loopback = 1,
 145                 .promisc_mode = MLX4_FS_REGULAR,
 146                 .port = priv->port,
 147                 .priority = MLX4_DOMAIN_RFS,
 148         };
 149         int rc;
 150         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 151
 152         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 153                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 154                         filter->ip_proto);
 155                 goto ignore;
 156         }
 157         list_add_tail(&spec_eth.list, &rule.list);
 158         list_add_tail(&spec_ip.list, &rule.list);
 159         list_add_tail(&spec_tcp_udp.list, &rule.list);
 160
 161         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 162         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 163         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 164
 165         filter->activated = 0;
 166
 167         if (filter->reg_id) {
 168                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 169                 if (rc && rc != -ENOENT)
 170                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 171         }
 172
 173         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 174         if (rc)
 175                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 176
 177 ignore:
 178         mlx4_en_filter_rfs_expire(priv);
 179
 180         filter->activated = 1;
 181 }
 182
 183 static inline struct hlist_head *
 184 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 185                    __be16 src_port, __be16 dst_port)
 186 {
 187         unsigned long l;
 188         int bucket_idx;
 189
 190         l = (__force unsigned long)src_port |
 191             ((__force unsigned long)dst_port << 2);
 192         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 193
 194         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 195
 196         return &priv->filter_hash[bucket_idx];
 197 }
 198
 199 static struct mlx4_en_filter *
 200 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 201                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 202                      __be16 dst_port, u32 flow_id)
 203 {
 204         struct mlx4_en_filter *filter = NULL;
 205
 206         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 207         if (!filter)
 208                 return NULL;
 209
 210         filter->priv = priv;
 211         filter->rxq_index = rxq_index;
 212         INIT_WORK(&filter->work, mlx4_en_filter_work);
 213
 214         filter->src_ip = src_ip;
 215         filter->dst_ip = dst_ip;
 216         filter->ip_proto = ip_proto;
 217         filter->src_port = src_port;
 218         filter->dst_port = dst_port;
 219
 220         filter->flow_id = flow_id;
 221
 222         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 223
 224         list_add_tail(&filter->next, &priv->filters);
 225         hlist_add_head(&filter->filter_chain,
 226                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 227                                           dst_port));
 228
 229         return filter;
 230 }
 231
 232 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 233 {
 234         struct mlx4_en_priv *priv = filter->priv;
 235         int rc;
 236
 237         list_del(&filter->next);
 238
 239         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 240         if (rc && rc != -ENOENT)
 241                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 242
 243         kfree(filter);
 244 }
 245
 246 static inline struct mlx4_en_filter *
 247 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 248                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 249 {
 250         struct mlx4_en_filter *filter;
 251         struct mlx4_en_filter *ret = NULL;
 252
 253         hlist_for_each_entry(filter,
 254                              filter_hash_bucket(priv, src_ip, dst_ip,
 255                                                 src_port, dst_port),
 256                              filter_chain) {
 257                 if (filter->src_ip == src_ip &&
 258                     filter->dst_ip == dst_ip &&
 259                     filter->ip_proto == ip_proto &&
 260                     filter->src_port == src_port &&
 261                     filter->dst_port == dst_port) {
 262                         ret = filter;
 263                         break;
 264                 }
 265         }
 266
 267         return ret;
 268 }
 269
 270 static int
 271 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 272                    u16 rxq_index, u32 flow_id)
 273 {
 274         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 275         struct mlx4_en_filter *filter;
 276         const struct iphdr *ip;
 277         const __be16 *ports;
 278         u8 ip_proto;
 279         __be32 src_ip;
 280         __be32 dst_ip;
 281         __be16 src_port;
 282         __be16 dst_port;
 283         int nhoff = skb_network_offset(skb);
 284         int ret = 0;
 285
 286         if (skb->protocol != htons(ETH_P_IP))
 287                 return -EPROTONOSUPPORT;
 288
 289         ip = (const struct iphdr *)(skb->data + nhoff);
 290         if (ip_is_fragment(ip))
 291                 return -EPROTONOSUPPORT;
 292
 293         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 294                 return -EPROTONOSUPPORT;
 295         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 296
 297         ip_proto = ip->protocol;
 298         src_ip = ip->saddr;
 299         dst_ip = ip->daddr;
 300         src_port = ports[0];
 301         dst_port = ports[1];
 302
 303         spin_lock_bh(&priv->filters_lock);
 304         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 305                                      src_port, dst_port);
 306         if (filter) {
 307                 if (filter->rxq_index == rxq_index)
 308                         goto out;
 309
 310                 filter->rxq_index = rxq_index;
 311         } else {
 312                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 313                                               src_ip, dst_ip, ip_proto,
 314                                               src_port, dst_port, flow_id);
 315                 if (!filter) {
 316                         ret = -ENOMEM;
 317                         goto err;
 318                 }
 319         }
 320
 321         queue_work(priv->mdev->workqueue, &filter->work);
 322
 323 out:
 324         ret = filter->id;
 325 err:
 326         spin_unlock_bh(&priv->filters_lock);
 327
 328         return ret;
 329 }
 330
 331 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 332 {
 333         struct mlx4_en_filter *filter, *tmp;
 334         LIST_HEAD(del_list);
 335
 336         spin_lock_bh(&priv->filters_lock);
 337         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 338                 list_move(&filter->next, &del_list);
 339                 hlist_del(&filter->filter_chain);
 340         }
 341         spin_unlock_bh(&priv->filters_lock);
 342
 343         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 344                 cancel_work_sync(&filter->work);
 345                 mlx4_en_filter_free(filter);
 346         }
 347 }
 348
 349 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 350 {
 351         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 352         LIST_HEAD(del_list);
 353         int i = 0;
 354
 355         spin_lock_bh(&priv->filters_lock);
 356         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 357                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 358                         break;
 359
 360                 if (filter->activated &&
 361                     !work_pending(&filter->work) &&
 362                     rps_may_expire_flow(priv->dev,
 363                                         filter->rxq_index, filter->flow_id,
 364                                         filter->id)) {
 365                         list_move(&filter->next, &del_list);
 366                         hlist_del(&filter->filter_chain);
 367                 } else
 368                         last_filter = filter;
 369
 370                 i++;
 371         }
 372
 373         if (last_filter && (&last_filter->next != priv->filters.next))
 374                 list_move(&priv->filters, &last_filter->next);
 375
 376         spin_unlock_bh(&priv->filters_lock);
 377
 378         list_for_each_entry_safe(filter, tmp, &del_list, next)
 379                 mlx4_en_filter_free(filter);
 380 }
 381 #endif
 382
 383 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 384                                    __be16 proto, u16 vid)
 385 {
 386         struct mlx4_en_priv *priv = netdev_priv(dev);
 387         struct mlx4_en_dev *mdev = priv->mdev;
 388         int err;
 389         int idx;
 390
 391         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 392
 393         set_bit(vid, priv->active_vlans);
 394
 395         /* Add VID to port VLAN filter */
 396         mutex_lock(&mdev->state_lock);
 397         if (mdev->device_up && priv->port_up) {
 398                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 399                 if (err)
 400                         en_err(priv, "Failed configuring VLAN filter\n");
 401         }
 402         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 403                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 404         mutex_unlock(&mdev->state_lock);
 405
 406         return 0;
 407 }
 408
 409 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 410                                     __be16 proto, u16 vid)
 411 {
 412         struct mlx4_en_priv *priv = netdev_priv(dev);
 413         struct mlx4_en_dev *mdev = priv->mdev;
 414         int err;
 415
 416         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 417
 418         clear_bit(vid, priv->active_vlans);
 419
 420         /* Remove VID from port VLAN filter */
 421         mutex_lock(&mdev->state_lock);
 422         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 423
 424         if (mdev->device_up && priv->port_up) {
 425                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 426                 if (err)
 427                         en_err(priv, "Failed configuring VLAN filter\n");
 428         }
 429         mutex_unlock(&mdev->state_lock);
 430
 431         return 0;
 432 }
 433
 434 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 435 {
 436         int i;
 437         for (i = ETH_ALEN - 1; i >= 0; --i) {
 438                 dst_mac[i] = src_mac & 0xff;
 439                 src_mac >>= 8;
 440         }
 441         memset(&dst_mac[ETH_ALEN], 0, 2);
 442 }
 443
 444
 445 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 446                                     int qpn, u64 *reg_id)
 447 {
 448         int err;
 449
 450         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 451             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 452                 return 0; /* do nothing */
 453
 454         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 455                                     MLX4_DOMAIN_NIC, reg_id);
 456         if (err) {
 457                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 458                 return err;
 459         }
 460         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 461         return 0;
 462 }
 463
 464
 465 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 466                                 unsigned char *mac, int *qpn, u64 *reg_id)
 467 {
 468         struct mlx4_en_dev *mdev = priv->mdev;
 469         struct mlx4_dev *dev = mdev->dev;
 470         int err;
 471
 472         switch (dev->caps.steering_mode) {
 473         case MLX4_STEERING_MODE_B0: {
 474                 struct mlx4_qp qp;
 475                 u8 gid[16] = {0};
 476
 477                 qp.qpn = *qpn;
 478                 memcpy(&gid[10], mac, ETH_ALEN);
 479                 gid[5] = priv->port;
 480
 481                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 482                 break;
 483         }
 484         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 485                 struct mlx4_spec_list spec_eth = { {NULL} };
 486                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 487
 488                 struct mlx4_net_trans_rule rule = {
 489                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 490                         .exclusive = 0,
 491                         .allow_loopback = 1,
 492                         .promisc_mode = MLX4_FS_REGULAR,
 493                         .priority = MLX4_DOMAIN_NIC,
 494                 };
 495
 496                 rule.port = priv->port;
 497                 rule.qpn = *qpn;
 498                 INIT_LIST_HEAD(&rule.list);
 499
 500                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 501                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 502                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 503                 list_add_tail(&spec_eth.list, &rule.list);
 504
 505                 err = mlx4_flow_attach(dev, &rule, reg_id);
 506                 break;
 507         }
 508         default:
 509                 return -EINVAL;
 510         }
 511         if (err)
 512                 en_warn(priv, "Failed Attaching Unicast\n");
 513
 514         return err;
 515 }
 516
 517 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 518                                      unsigned char *mac, int qpn, u64 reg_id)
 519 {
 520         struct mlx4_en_dev *mdev = priv->mdev;
 521         struct mlx4_dev *dev = mdev->dev;
 522
 523         switch (dev->caps.steering_mode) {
 524         case MLX4_STEERING_MODE_B0: {
 525                 struct mlx4_qp qp;
 526                 u8 gid[16] = {0};
 527
 528                 qp.qpn = qpn;
 529                 memcpy(&gid[10], mac, ETH_ALEN);
 530                 gid[5] = priv->port;
 531
 532                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 533                 break;
 534         }
 535         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 536                 mlx4_flow_detach(dev, reg_id);
 537                 break;
 538         }
 539         default:
 540                 en_err(priv, "Invalid steering mode.\n");
 541         }
 542 }
 543
 544 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 545 {
 546         struct mlx4_en_dev *mdev = priv->mdev;
 547         struct mlx4_dev *dev = mdev->dev;
 548         int index = 0;
 549         int err = 0;
 550         int *qpn = &priv->base_qpn;
 551         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 552
 553         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 554                priv->dev->dev_addr);
 555         index = mlx4_register_mac(dev, priv->port, mac);
 556         if (index < 0) {
 557                 err = index;
 558                 en_err(priv, "Failed adding MAC: %pM\n",
 559                        priv->dev->dev_addr);
 560                 return err;
 561         }
 562
 563         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 564                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 565                 *qpn = base_qpn + index;
 566                 return 0;
 567         }
 568
 569         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 570         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 571         if (err) {
 572                 en_err(priv, "Failed to reserve qp for mac registration\n");
 573                 mlx4_unregister_mac(dev, priv->port, mac);
 574                 return err;
 575         }
 576
 577         return 0;
 578 }
 579
 580 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 581 {
 582         struct mlx4_en_dev *mdev = priv->mdev;
 583         struct mlx4_dev *dev = mdev->dev;
 584         int qpn = priv->base_qpn;
 585
 586         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 587                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 588                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 589                        priv->dev->dev_addr);
 590                 mlx4_unregister_mac(dev, priv->port, mac);
 591         } else {
 592                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 593                        priv->port, qpn);
 594                 mlx4_qp_release_range(dev, qpn, 1);
 595                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 596         }
 597 }
 598
 599 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 600                                unsigned char *new_mac, unsigned char *prev_mac)
 601 {
 602         struct mlx4_en_dev *mdev = priv->mdev;
 603         struct mlx4_dev *dev = mdev->dev;
 604         int err = 0;
 605         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 606
 607         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 608                 struct hlist_head *bucket;
 609                 unsigned int mac_hash;
 610                 struct mlx4_mac_entry *entry;
 611                 struct hlist_node *tmp;
 612                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 613
 614                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 615                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 616                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 617                                 mlx4_en_uc_steer_release(priv, entry->mac,
 618                                                          qpn, entry->reg_id);
 619                                 mlx4_unregister_mac(dev, priv->port,
 620                                                     prev_mac_u64);
 621                                 hlist_del_rcu(&entry->hlist);
 622                                 synchronize_rcu();
 623                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 624                                 entry->reg_id = 0;
 625                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 626                                 hlist_add_head_rcu(&entry->hlist,
 627                                                    &priv->mac_hash[mac_hash]);
 628                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 629                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 630                                                            &qpn,
 631                                                            &entry->reg_id);
 632                                 if (err)
 633                                         return err;
 634                                 if (priv->tunnel_reg_id) {
 635                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 636                                         priv->tunnel_reg_id = 0;
 637                                 }
 638                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 639                                                                &priv->tunnel_reg_id);
 640                                 return err;
 641                         }
 642                 }
 643                 return -EINVAL;
 644         }
 645
 646         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 647 }
 648
 649 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 650                               unsigned char new_mac[ETH_ALEN + 2])
 651 {
 652         int err = 0;
 653
 654         if (priv->port_up) {
 655                 /* Remove old MAC and insert the new one */
 656                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 657                                           new_mac, priv->current_mac);
 658                 if (err)
 659                         en_err(priv, "Failed changing HW MAC address\n");
 660         } else
 661                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 662
 663         if (!err)
 664                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 665
 666         return err;
 667 }
 668
 669 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 670 {
 671         struct mlx4_en_priv *priv = netdev_priv(dev);
 672         struct mlx4_en_dev *mdev = priv->mdev;
 673         struct sockaddr *saddr = addr;
 674         unsigned char new_mac[ETH_ALEN + 2];
 675         int err;
 676
 677         if (!is_valid_ether_addr(saddr->sa_data))
 678                 return -EADDRNOTAVAIL;
 679
 680         mutex_lock(&mdev->state_lock);
 681         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 682         err = mlx4_en_do_set_mac(priv, new_mac);
 683         if (!err)
 684                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 685         mutex_unlock(&mdev->state_lock);
 686
 687         return err;
 688 }
 689
 690 static void mlx4_en_clear_list(struct net_device *dev)
 691 {
 692         struct mlx4_en_priv *priv = netdev_priv(dev);
 693         struct mlx4_en_mc_list *tmp, *mc_to_del;
 694
 695         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 696                 list_del(&mc_to_del->list);
 697                 kfree(mc_to_del);
 698         }
 699 }
 700
 701 static void mlx4_en_cache_mclist(struct net_device *dev)
 702 {
 703         struct mlx4_en_priv *priv = netdev_priv(dev);
 704         struct netdev_hw_addr *ha;
 705         struct mlx4_en_mc_list *tmp;
 706
 707         mlx4_en_clear_list(dev);
 708         netdev_for_each_mc_addr(ha, dev) {
 709                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 710                 if (!tmp) {
 711                         mlx4_en_clear_list(dev);
 712                         return;
 713                 }
 714                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 715                 list_add_tail(&tmp->list, &priv->mc_list);
 716         }
 717 }
 718
 719 static void update_mclist_flags(struct mlx4_en_priv *priv,
 720                                 struct list_head *dst,
 721                                 struct list_head *src)
 722 {
 723         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 724         bool found;
 725
 726         /* Find all the entries that should be removed from dst,
 727          * These are the entries that are not found in src
 728          */
 729         list_for_each_entry(dst_tmp, dst, list) {
 730                 found = false;
 731                 list_for_each_entry(src_tmp, src, list) {
 732                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 733                                 found = true;
 734                                 break;
 735                         }
 736                 }
 737                 if (!found)
 738                         dst_tmp->action = MCLIST_REM;
 739         }
 740
 741         /* Add entries that exist in src but not in dst
 742          * mark them as need to add
 743          */
 744         list_for_each_entry(src_tmp, src, list) {
 745                 found = false;
 746                 list_for_each_entry(dst_tmp, dst, list) {
 747                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 748                                 dst_tmp->action = MCLIST_NONE;
 749                                 found = true;
 750                                 break;
 751                         }
 752                 }
 753                 if (!found) {
 754                         new_mc = kmemdup(src_tmp,
 755                                          sizeof(struct mlx4_en_mc_list),
 756                                          GFP_KERNEL);
 757                         if (!new_mc)
 758                                 return;
 759
 760                         new_mc->action = MCLIST_ADD;
 761                         list_add_tail(&new_mc->list, dst);
 762                 }
 763         }
 764 }
 765
 766 static void mlx4_en_set_rx_mode(struct net_device *dev)
 767 {
 768         struct mlx4_en_priv *priv = netdev_priv(dev);
 769
 770         if (!priv->port_up)
 771                 return;
 772
 773         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 774 }
 775
 776 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 777                                      struct mlx4_en_dev *mdev)
 778 {
 779         int err = 0;
 780
 781         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 782                 if (netif_msg_rx_status(priv))
 783                         en_warn(priv, "Entering promiscuous mode\n");
 784                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 785
 786                 /* Enable promiscouos mode */
 787                 switch (mdev->dev->caps.steering_mode) {
 788                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 789                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 790                                                           priv->port,
 791                                                           priv->base_qpn,
 792                                                           MLX4_FS_ALL_DEFAULT);
 793                         if (err)
 794                                 en_err(priv, "Failed enabling promiscuous mode\n");
 795                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 796                         break;
 797
 798                 case MLX4_STEERING_MODE_B0:
 799                         err = mlx4_unicast_promisc_add(mdev->dev,
 800                                                        priv->base_qpn,
 801                                                        priv->port);
 802                         if (err)
 803                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 804
 805                         /* Add the default qp number as multicast
 806                          * promisc
 807                          */
 808                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 809                                 err = mlx4_multicast_promisc_add(mdev->dev,
 810                                                                  priv->base_qpn,
 811                                                                  priv->port);
 812                                 if (err)
 813                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 814                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 815                         }
 816                         break;
 817
 818                 case MLX4_STEERING_MODE_A0:
 819                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 820                                                      priv->port,
 821                                                      priv->base_qpn,
 822                                                      1);
 823                         if (err)
 824                                 en_err(priv, "Failed enabling promiscuous mode\n");
 825                         break;
 826                 }
 827
 828                 /* Disable port multicast filter (unconditionally) */
 829                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 830                                           0, MLX4_MCAST_DISABLE);
 831                 if (err)
 832                         en_err(priv, "Failed disabling multicast filter\n");
 833         }
 834 }
 835
 836 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 837                                        struct mlx4_en_dev *mdev)
 838 {
 839         int err = 0;
 840
 841         if (netif_msg_rx_status(priv))
 842                 en_warn(priv, "Leaving promiscuous mode\n");
 843         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 844
 845         /* Disable promiscouos mode */
 846         switch (mdev->dev->caps.steering_mode) {
 847         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 848                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 849                                                      priv->port,
 850                                                      MLX4_FS_ALL_DEFAULT);
 851                 if (err)
 852                         en_err(priv, "Failed disabling promiscuous mode\n");
 853                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 854                 break;
 855
 856         case MLX4_STEERING_MODE_B0:
 857                 err = mlx4_unicast_promisc_remove(mdev->dev,
 858                                                   priv->base_qpn,
 859                                                   priv->port);
 860                 if (err)
 861                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 862                 /* Disable Multicast promisc */
 863                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 864                         err = mlx4_multicast_promisc_remove(mdev->dev,
 865                                                             priv->base_qpn,
 866                                                             priv->port);
 867                         if (err)
 868                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 869                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 870                 }
 871                 break;
 872
 873         case MLX4_STEERING_MODE_A0:
 874                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 875                                              priv->port,
 876                                              priv->base_qpn, 0);
 877                 if (err)
 878                         en_err(priv, "Failed disabling promiscuous mode\n");
 879                 break;
 880         }
 881 }
 882
 883 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 884                                  struct net_device *dev,
 885                                  struct mlx4_en_dev *mdev)
 886 {
 887         struct mlx4_en_mc_list *mclist, *tmp;
 888         u64 mcast_addr = 0;
 889         u8 mc_list[16] = {0};
 890         int err = 0;
 891
 892         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 893         if (dev->flags & IFF_ALLMULTI) {
 894                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 895                                           0, MLX4_MCAST_DISABLE);
 896                 if (err)
 897                         en_err(priv, "Failed disabling multicast filter\n");
 898
 899                 /* Add the default qp number as multicast promisc */
 900                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 901                         switch (mdev->dev->caps.steering_mode) {
 902                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 903                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 904                                                                   priv->port,
 905                                                                   priv->base_qpn,
 906                                                                   MLX4_FS_MC_DEFAULT);
 907                                 break;
 908
 909                         case MLX4_STEERING_MODE_B0:
 910                                 err = mlx4_multicast_promisc_add(mdev->dev,
 911                                                                  priv->base_qpn,
 912                                                                  priv->port);
 913                                 break;
 914
 915                         case MLX4_STEERING_MODE_A0:
 916                                 break;
 917                         }
 918                         if (err)
 919                                 en_err(priv, "Failed entering multicast promisc mode\n");
 920                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 921                 }
 922         } else {
 923                 /* Disable Multicast promisc */
 924                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 925                         switch (mdev->dev->caps.steering_mode) {
 926                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 927                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 928                                                                      priv->port,
 929                                                                      MLX4_FS_MC_DEFAULT);
 930                                 break;
 931
 932                         case MLX4_STEERING_MODE_B0:
 933                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 934                                                                     priv->base_qpn,
 935                                                                     priv->port);
 936                                 break;
 937
 938                         case MLX4_STEERING_MODE_A0:
 939                                 break;
 940                         }
 941                         if (err)
 942                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 943                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 944                 }
 945
 946                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 947                                           0, MLX4_MCAST_DISABLE);
 948                 if (err)
 949                         en_err(priv, "Failed disabling multicast filter\n");
 950
 951                 /* Flush mcast filter and init it with broadcast address */
 952                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 953                                     1, MLX4_MCAST_CONFIG);
 954
 955                 /* Update multicast list - we cache all addresses so they won't
 956                  * change while HW is updated holding the command semaphor */
 957                 netif_addr_lock_bh(dev);
 958                 mlx4_en_cache_mclist(dev);
 959                 netif_addr_unlock_bh(dev);
 960                 list_for_each_entry(mclist, &priv->mc_list, list) {
 961                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 962                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 963                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 964                 }
 965                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 966                                           0, MLX4_MCAST_ENABLE);
 967                 if (err)
 968                         en_err(priv, "Failed enabling multicast filter\n");
 969
 970                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
 971                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
 972                         if (mclist->action == MCLIST_REM) {
 973                                 /* detach this address and delete from list */
 974                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 975                                 mc_list[5] = priv->port;
 976                                 err = mlx4_multicast_detach(mdev->dev,
 977                                                             &priv->rss_map.indir_qp,
 978                                                             mc_list,
 979                                                             MLX4_PROT_ETH,
 980                                                             mclist->reg_id);
 981                                 if (err)
 982                                         en_err(priv, "Fail to detach multicast address\n");
 983
 984                                 if (mclist->tunnel_reg_id) {
 985                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
 986                                         if (err)
 987                                                 en_err(priv, "Failed to detach multicast address\n");
 988                                 }
 989
 990                                 /* remove from list */
 991                                 list_del(&mclist->list);
 992                                 kfree(mclist);
 993                         } else if (mclist->action == MCLIST_ADD) {
 994                                 /* attach the address */
 995                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
 996                                 /* needed for B0 steering support */
 997                                 mc_list[5] = priv->port;
 998                                 err = mlx4_multicast_attach(mdev->dev,
 999                                                             &priv->rss_map.indir_qp,
1000                                                             mc_list,
1001                                                             priv->port, 0,
1002                                                             MLX4_PROT_ETH,
1003                                                             &mclist->reg_id);
1004                                 if (err)
1005                                         en_err(priv, "Fail to attach multicast address\n");
1006
1007                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1008                                                                &mclist->tunnel_reg_id);
1009                                 if (err)
1010                                         en_err(priv, "Failed to attach multicast address\n");
1011                         }
1012                 }
1013         }
1014 }
1015
1016 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1017                                  struct net_device *dev,
1018                                  struct mlx4_en_dev *mdev)
1019 {
1020         struct netdev_hw_addr *ha;
1021         struct mlx4_mac_entry *entry;
1022         struct hlist_node *tmp;
1023         bool found;
1024         u64 mac;
1025         int err = 0;
1026         struct hlist_head *bucket;
1027         unsigned int i;
1028         int removed = 0;
1029         u32 prev_flags;
1030
1031         /* Note that we do not need to protect our mac_hash traversal with rcu,
1032          * since all modification code is protected by mdev->state_lock
1033          */
1034
1035         /* find what to remove */
1036         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1037                 bucket = &priv->mac_hash[i];
1038                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1039                         found = false;
1040                         netdev_for_each_uc_addr(ha, dev) {
1041                                 if (ether_addr_equal_64bits(entry->mac,
1042                                                             ha->addr)) {
1043                                         found = true;
1044                                         break;
1045                                 }
1046                         }
1047
1048                         /* MAC address of the port is not in uc list */
1049                         if (ether_addr_equal_64bits(entry->mac,
1050                                                     priv->current_mac))
1051                                 found = true;
1052
1053                         if (!found) {
1054                                 mac = mlx4_mac_to_u64(entry->mac);
1055                                 mlx4_en_uc_steer_release(priv, entry->mac,
1056                                                          priv->base_qpn,
1057                                                          entry->reg_id);
1058                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1059
1060                                 hlist_del_rcu(&entry->hlist);
1061                                 kfree_rcu(entry, rcu);
1062                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1063                                        entry->mac, priv->port);
1064                                 ++removed;
1065                         }
1066                 }
1067         }
1068
1069         /* if we didn't remove anything, there is no use in trying to add
1070          * again once we are in a forced promisc mode state
1071          */
1072         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1073                 return;
1074
1075         prev_flags = priv->flags;
1076         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1077
1078         /* find what to add */
1079         netdev_for_each_uc_addr(ha, dev) {
1080                 found = false;
1081                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1082                 hlist_for_each_entry(entry, bucket, hlist) {
1083                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1084                                 found = true;
1085                                 break;
1086                         }
1087                 }
1088
1089                 if (!found) {
1090                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1091                         if (!entry) {
1092                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1093                                        ha->addr, priv->port);
1094                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1095                                 break;
1096                         }
1097                         mac = mlx4_mac_to_u64(ha->addr);
1098                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1099                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1100                         if (err < 0) {
1101                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1102                                        ha->addr, priv->port, err);
1103                                 kfree(entry);
1104                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1105                                 break;
1106                         }
1107                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1108                                                    &priv->base_qpn,
1109                                                    &entry->reg_id);
1110                         if (err) {
1111                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1112                                        ha->addr, priv->port, err);
1113                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1114                                 kfree(entry);
1115                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1116                                 break;
1117                         } else {
1118                                 unsigned int mac_hash;
1119                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1120                                        ha->addr, priv->port);
1121                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1122                                 bucket = &priv->mac_hash[mac_hash];
1123                                 hlist_add_head_rcu(&entry->hlist, bucket);
1124                         }
1125                 }
1126         }
1127
1128         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1129                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1130                         priv->port);
1131         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1132                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1133                         priv->port);
1134         }
1135 }
1136
1137 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1138 {
1139         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1140                                                  rx_mode_task);
1141         struct mlx4_en_dev *mdev = priv->mdev;
1142         struct net_device *dev = priv->dev;
1143
1144         mutex_lock(&mdev->state_lock);
1145         if (!mdev->device_up) {
1146                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1147                 goto out;
1148         }
1149         if (!priv->port_up) {
1150                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1151                 goto out;
1152         }
1153
1154         if (!netif_carrier_ok(dev)) {
1155                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1156                         if (priv->port_state.link_state) {
1157                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1158                                 netif_carrier_on(dev);
1159                                 en_dbg(LINK, priv, "Link Up\n");
1160                         }
1161                 }
1162         }
1163
1164         if (dev->priv_flags & IFF_UNICAST_FLT)
1165                 mlx4_en_do_uc_filter(priv, dev, mdev);
1166
1167         /* Promsicuous mode: disable all filters */
1168         if ((dev->flags & IFF_PROMISC) ||
1169             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1170                 mlx4_en_set_promisc_mode(priv, mdev);
1171                 goto out;
1172         }
1173
1174         /* Not in promiscuous mode */
1175         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1176                 mlx4_en_clear_promisc_mode(priv, mdev);
1177
1178         mlx4_en_do_multicast(priv, dev, mdev);
1179 out:
1180         mutex_unlock(&mdev->state_lock);
1181 }
1182
1183 #ifdef CONFIG_NET_POLL_CONTROLLER
1184 static void mlx4_en_netpoll(struct net_device *dev)
1185 {
1186         struct mlx4_en_priv *priv = netdev_priv(dev);
1187         struct mlx4_en_cq *cq;
1188         int i;
1189
1190         for (i = 0; i < priv->rx_ring_num; i++) {
1191                 cq = priv->rx_cq[i];
1192                 napi_schedule(&cq->napi);
1193         }
1194 }
1195 #endif
1196
1197 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1198 {
1199         u64 reg_id;
1200         int err = 0;
1201         int *qpn = &priv->base_qpn;
1202         struct mlx4_mac_entry *entry;
1203
1204         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1205         if (err)
1206                 return err;
1207
1208         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1209                                        &priv->tunnel_reg_id);
1210         if (err)
1211                 goto tunnel_err;
1212
1213         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1214         if (!entry) {
1215                 err = -ENOMEM;
1216                 goto alloc_err;
1217         }
1218
1219         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1220         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1221         entry->reg_id = reg_id;
1222         hlist_add_head_rcu(&entry->hlist,
1223                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1224
1225         return 0;
1226
1227 alloc_err:
1228         if (priv->tunnel_reg_id)
1229                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1230
1231 tunnel_err:
1232         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1233         return err;
1234 }
1235
1236 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1237 {
1238         u64 mac;
1239         unsigned int i;
1240         int qpn = priv->base_qpn;
1241         struct hlist_head *bucket;
1242         struct hlist_node *tmp;
1243         struct mlx4_mac_entry *entry;
1244
1245         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1246                 bucket = &priv->mac_hash[i];
1247                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1248                         mac = mlx4_mac_to_u64(entry->mac);
1249                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1250                                entry->mac);
1251                         mlx4_en_uc_steer_release(priv, entry->mac,
1252                                                  qpn, entry->reg_id);
1253
1254                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1255                         hlist_del_rcu(&entry->hlist);
1256                         kfree_rcu(entry, rcu);
1257                 }
1258         }
1259
1260         if (priv->tunnel_reg_id) {
1261                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1262                 priv->tunnel_reg_id = 0;
1263         }
1264 }
1265
1266 static void mlx4_en_tx_timeout(struct net_device *dev)
1267 {
1268         struct mlx4_en_priv *priv = netdev_priv(dev);
1269         struct mlx4_en_dev *mdev = priv->mdev;
1270         int i;
1271
1272         if (netif_msg_timer(priv))
1273                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1274
1275         for (i = 0; i < priv->tx_ring_num; i++) {
1276                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1277                         continue;
1278                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1279                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1280                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1281         }
1282
1283         priv->port_stats.tx_timeout++;
1284         en_dbg(DRV, priv, "Scheduling watchdog\n");
1285         queue_work(mdev->workqueue, &priv->watchdog_task);
1286 }
1287
1288
1289 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1290 {
1291         struct mlx4_en_priv *priv = netdev_priv(dev);
1292
1293         spin_lock_bh(&priv->stats_lock);
1294         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1295         spin_unlock_bh(&priv->stats_lock);
1296
1297         return &priv->ret_stats;
1298 }
1299
1300 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1301 {
1302         struct mlx4_en_cq *cq;
1303         int i;
1304
1305         /* If we haven't received a specific coalescing setting
1306          * (module param), we set the moderation parameters as follows:
1307          * - moder_cnt is set to the number of mtu sized packets to
1308          *   satisfy our coalescing target.
1309          * - moder_time is set to a fixed value.
1310          */
1311         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1312         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1313         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1314         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1315         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1316                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1317
1318         /* Setup cq moderation params */
1319         for (i = 0; i < priv->rx_ring_num; i++) {
1320                 cq = priv->rx_cq[i];
1321                 cq->moder_cnt = priv->rx_frames;
1322                 cq->moder_time = priv->rx_usecs;
1323                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1324                 priv->last_moder_packets[i] = 0;
1325                 priv->last_moder_bytes[i] = 0;
1326         }
1327
1328         for (i = 0; i < priv->tx_ring_num; i++) {
1329                 cq = priv->tx_cq[i];
1330                 cq->moder_cnt = priv->tx_frames;
1331                 cq->moder_time = priv->tx_usecs;
1332         }
1333
1334         /* Reset auto-moderation params */
1335         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1336         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1337         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1338         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1339         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1340         priv->adaptive_rx_coal = 1;
1341         priv->last_moder_jiffies = 0;
1342         priv->last_moder_tx_packets = 0;
1343 }
1344
1345 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1346 {
1347         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1348         struct mlx4_en_cq *cq;
1349         unsigned long packets;
1350         unsigned long rate;
1351         unsigned long avg_pkt_size;
1352         unsigned long rx_packets;
1353         unsigned long rx_bytes;
1354         unsigned long rx_pkt_diff;
1355         int moder_time;
1356         int ring, err;
1357
1358         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1359                 return;
1360
1361         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1362                 spin_lock_bh(&priv->stats_lock);
1363                 rx_packets = priv->rx_ring[ring]->packets;
1364                 rx_bytes = priv->rx_ring[ring]->bytes;
1365                 spin_unlock_bh(&priv->stats_lock);
1366
1367                 rx_pkt_diff = ((unsigned long) (rx_packets -
1368                                 priv->last_moder_packets[ring]));
1369                 packets = rx_pkt_diff;
1370                 rate = packets * HZ / period;
1371                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1372                                 priv->last_moder_bytes[ring])) / packets : 0;
1373
1374                 /* Apply auto-moderation only when packet rate
1375                  * exceeds a rate that it matters */
1376                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1377                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1378                         if (rate < priv->pkt_rate_low)
1379                                 moder_time = priv->rx_usecs_low;
1380                         else if (rate > priv->pkt_rate_high)
1381                                 moder_time = priv->rx_usecs_high;
1382                         else
1383                                 moder_time = (rate - priv->pkt_rate_low) *
1384                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1385                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1386                                         priv->rx_usecs_low;
1387                 } else {
1388                         moder_time = priv->rx_usecs_low;
1389                 }
1390
1391                 if (moder_time != priv->last_moder_time[ring]) {
1392                         priv->last_moder_time[ring] = moder_time;
1393                         cq = priv->rx_cq[ring];
1394                         cq->moder_time = moder_time;
1395                         cq->moder_cnt = priv->rx_frames;
1396                         err = mlx4_en_set_cq_moder(priv, cq);
1397                         if (err)
1398                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1399                                        ring);
1400                 }
1401                 priv->last_moder_packets[ring] = rx_packets;
1402                 priv->last_moder_bytes[ring] = rx_bytes;
1403         }
1404
1405         priv->last_moder_jiffies = jiffies;
1406 }
1407
1408 static void mlx4_en_do_get_stats(struct work_struct *work)
1409 {
1410         struct delayed_work *delay = to_delayed_work(work);
1411         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1412                                                  stats_task);
1413         struct mlx4_en_dev *mdev = priv->mdev;
1414         int err;
1415
1416         mutex_lock(&mdev->state_lock);
1417         if (mdev->device_up) {
1418                 if (priv->port_up) {
1419                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1420                         if (err)
1421                                 en_dbg(HW, priv, "Could not update stats\n");
1422
1423                         mlx4_en_auto_moderation(priv);
1424                 }
1425
1426                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1427         }
1428         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1429                 mlx4_en_do_set_mac(priv, priv->current_mac);
1430                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1431         }
1432         mutex_unlock(&mdev->state_lock);
1433 }
1434
1435 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1436  * periodically
1437  */
1438 static void mlx4_en_service_task(struct work_struct *work)
1439 {
1440         struct delayed_work *delay = to_delayed_work(work);
1441         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1442                                                  service_task);
1443         struct mlx4_en_dev *mdev = priv->mdev;
1444
1445         mutex_lock(&mdev->state_lock);
1446         if (mdev->device_up) {
1447                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1448                         mlx4_en_ptp_overflow_check(mdev);
1449
1450                 mlx4_en_recover_from_oom(priv);
1451                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1452                                    SERVICE_TASK_DELAY);
1453         }
1454         mutex_unlock(&mdev->state_lock);
1455 }
1456
1457 static void mlx4_en_linkstate(struct work_struct *work)
1458 {
1459         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1460                                                  linkstate_task);
1461         struct mlx4_en_dev *mdev = priv->mdev;
1462         int linkstate = priv->link_state;
1463
1464         mutex_lock(&mdev->state_lock);
1465         /* If observable port state changed set carrier state and
1466          * report to system log */
1467         if (priv->last_link_state != linkstate) {
1468                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1469                         en_info(priv, "Link Down\n");
1470                         netif_carrier_off(priv->dev);
1471                 } else {
1472                         en_info(priv, "Link Up\n");
1473                         netif_carrier_on(priv->dev);
1474                 }
1475         }
1476         priv->last_link_state = linkstate;
1477         mutex_unlock(&mdev->state_lock);
1478 }
1479
1480 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1481 {
1482         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1483         int numa_node = priv->mdev->dev->numa_node;
1484
1485         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1486                 return -ENOMEM;
1487
1488         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1489                         ring->affinity_mask);
1490         return 0;
1491 }
1492
1493 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1494 {
1495         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1496 }
1497
1498 int mlx4_en_start_port(struct net_device *dev)
1499 {
1500         struct mlx4_en_priv *priv = netdev_priv(dev);
1501         struct mlx4_en_dev *mdev = priv->mdev;
1502         struct mlx4_en_cq *cq;
1503         struct mlx4_en_tx_ring *tx_ring;
1504         int rx_index = 0;
1505         int tx_index = 0;
1506         int err = 0;
1507         int i;
1508         int j;
1509         u8 mc_list[16] = {0};
1510
1511         if (priv->port_up) {
1512                 en_dbg(DRV, priv, "start port called while port already up\n");
1513                 return 0;
1514         }
1515
1516         INIT_LIST_HEAD(&priv->mc_list);
1517         INIT_LIST_HEAD(&priv->curr_list);
1518         INIT_LIST_HEAD(&priv->ethtool_list);
1519         memset(&priv->ethtool_rules[0], 0,
1520                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1521
1522         /* Calculate Rx buf size */
1523         dev->mtu = min(dev->mtu, priv->max_mtu);
1524         mlx4_en_calc_rx_buf(dev);
1525         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1526
1527         /* Configure rx cq's and rings */
1528         err = mlx4_en_activate_rx_rings(priv);
1529         if (err) {
1530                 en_err(priv, "Failed to activate RX rings\n");
1531                 return err;
1532         }
1533         for (i = 0; i < priv->rx_ring_num; i++) {
1534                 cq = priv->rx_cq[i];
1535
1536                 err = mlx4_en_init_affinity_hint(priv, i);
1537                 if (err) {
1538                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1539                         goto cq_err;
1540                 }
1541
1542                 err = mlx4_en_activate_cq(priv, cq, i);
1543                 if (err) {
1544                         en_err(priv, "Failed activating Rx CQ\n");
1545                         mlx4_en_free_affinity_hint(priv, i);
1546                         goto cq_err;
1547                 }
1548
1549                 for (j = 0; j < cq->size; j++) {
1550                         struct mlx4_cqe *cqe = NULL;
1551
1552                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1553                               priv->cqe_factor;
1554                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1555                 }
1556
1557                 err = mlx4_en_set_cq_moder(priv, cq);
1558                 if (err) {
1559                         en_err(priv, "Failed setting cq moderation parameters\n");
1560                         mlx4_en_deactivate_cq(priv, cq);
1561                         mlx4_en_free_affinity_hint(priv, i);
1562                         goto cq_err;
1563                 }
1564                 mlx4_en_arm_cq(priv, cq);
1565                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1566                 ++rx_index;
1567         }
1568
1569         /* Set qp number */
1570         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1571         err = mlx4_en_get_qp(priv);
1572         if (err) {
1573                 en_err(priv, "Failed getting eth qp\n");
1574                 goto cq_err;
1575         }
1576         mdev->mac_removed[priv->port] = 0;
1577
1578         priv->counter_index =
1579                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1580
1581         err = mlx4_en_config_rss_steer(priv);
1582         if (err) {
1583                 en_err(priv, "Failed configuring rss steering\n");
1584                 goto mac_err;
1585         }
1586
1587         err = mlx4_en_create_drop_qp(priv);
1588         if (err)
1589                 goto rss_err;
1590
1591         /* Configure tx cq's and rings */
1592         for (i = 0; i < priv->tx_ring_num; i++) {
1593                 /* Configure cq */
1594                 cq = priv->tx_cq[i];
1595                 err = mlx4_en_activate_cq(priv, cq, i);
1596                 if (err) {
1597                         en_err(priv, "Failed allocating Tx CQ\n");
1598                         goto tx_err;
1599                 }
1600                 err = mlx4_en_set_cq_moder(priv, cq);
1601                 if (err) {
1602                         en_err(priv, "Failed setting cq moderation parameters\n");
1603                         mlx4_en_deactivate_cq(priv, cq);
1604                         goto tx_err;
1605                 }
1606                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1607                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1608
1609                 /* Configure ring */
1610                 tx_ring = priv->tx_ring[i];
1611                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1612                         i / priv->num_tx_rings_p_up);
1613                 if (err) {
1614                         en_err(priv, "Failed allocating Tx ring\n");
1615                         mlx4_en_deactivate_cq(priv, cq);
1616                         goto tx_err;
1617                 }
1618                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1619
1620                 /* Arm CQ for TX completions */
1621                 mlx4_en_arm_cq(priv, cq);
1622
1623                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1624                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1625                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1626                 ++tx_index;
1627         }
1628
1629         /* Configure port */
1630         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1631                                     priv->rx_skb_size + ETH_FCS_LEN,
1632                                     priv->prof->tx_pause,
1633                                     priv->prof->tx_ppp,
1634                                     priv->prof->rx_pause,
1635                                     priv->prof->rx_ppp);
1636         if (err) {
1637                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1638                        priv->port, err);
1639                 goto tx_err;
1640         }
1641         /* Set default qp number */
1642         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1643         if (err) {
1644                 en_err(priv, "Failed setting default qp numbers\n");
1645                 goto tx_err;
1646         }
1647
1648         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1649                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1650                 if (err) {
1651                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1652                                err);
1653                         goto tx_err;
1654                 }
1655         }
1656
1657         /* Init port */
1658         en_dbg(HW, priv, "Initializing port\n");
1659         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1660         if (err) {
1661                 en_err(priv, "Failed Initializing port\n");
1662                 goto tx_err;
1663         }
1664
1665         /* Set Unicast and VXLAN steering rules */
1666         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1667             mlx4_en_set_rss_steer_rules(priv))
1668                 mlx4_warn(mdev, "Failed setting steering rules\n");
1669
1670         /* Attach rx QP to bradcast address */
1671         eth_broadcast_addr(&mc_list[10]);
1672         mc_list[5] = priv->port; /* needed for B0 steering support */
1673         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1674                                   priv->port, 0, MLX4_PROT_ETH,
1675                                   &priv->broadcast_id))
1676                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1677
1678         /* Must redo promiscuous mode setup. */
1679         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1680
1681         /* Schedule multicast task to populate multicast list */
1682         queue_work(mdev->workqueue, &priv->rx_mode_task);
1683
1684 #ifdef CONFIG_MLX4_EN_VXLAN
1685         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1686                 vxlan_get_rx_port(dev);
1687 #endif
1688         priv->port_up = true;
1689         netif_tx_start_all_queues(dev);
1690         netif_device_attach(dev);
1691
1692         return 0;
1693
1694 tx_err:
1695         while (tx_index--) {
1696                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1697                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1698         }
1699         mlx4_en_destroy_drop_qp(priv);
1700 rss_err:
1701         mlx4_en_release_rss_steer(priv);
1702 mac_err:
1703         mlx4_en_put_qp(priv);
1704 cq_err:
1705         while (rx_index--) {
1706                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1707                 mlx4_en_free_affinity_hint(priv, rx_index);
1708         }
1709         for (i = 0; i < priv->rx_ring_num; i++)
1710                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1711
1712         return err; /* need to close devices */
1713 }
1714
1715
1716 void mlx4_en_stop_port(struct net_device *dev, int detach)
1717 {
1718         struct mlx4_en_priv *priv = netdev_priv(dev);
1719         struct mlx4_en_dev *mdev = priv->mdev;
1720         struct mlx4_en_mc_list *mclist, *tmp;
1721         struct ethtool_flow_id *flow, *tmp_flow;
1722         int i;
1723         u8 mc_list[16] = {0};
1724
1725         if (!priv->port_up) {
1726                 en_dbg(DRV, priv, "stop port called while port already down\n");
1727                 return;
1728         }
1729
1730         /* close port*/
1731         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1732
1733         /* Synchronize with tx routine */
1734         netif_tx_lock_bh(dev);
1735         if (detach)
1736                 netif_device_detach(dev);
1737         netif_tx_stop_all_queues(dev);
1738         netif_tx_unlock_bh(dev);
1739
1740         netif_tx_disable(dev);
1741
1742         /* Set port as not active */
1743         priv->port_up = false;
1744         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1745
1746         /* Promsicuous mode */
1747         if (mdev->dev->caps.steering_mode ==
1748             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1749                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1750                                  MLX4_EN_FLAG_MC_PROMISC);
1751                 mlx4_flow_steer_promisc_remove(mdev->dev,
1752                                                priv->port,
1753                                                MLX4_FS_ALL_DEFAULT);
1754                 mlx4_flow_steer_promisc_remove(mdev->dev,
1755                                                priv->port,
1756                                                MLX4_FS_MC_DEFAULT);
1757         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1758                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1759
1760                 /* Disable promiscouos mode */
1761                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1762                                             priv->port);
1763
1764                 /* Disable Multicast promisc */
1765                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1766                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1767                                                       priv->port);
1768                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1769                 }
1770         }
1771
1772         /* Detach All multicasts */
1773         eth_broadcast_addr(&mc_list[10]);
1774         mc_list[5] = priv->port; /* needed for B0 steering support */
1775         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1776                               MLX4_PROT_ETH, priv->broadcast_id);
1777         list_for_each_entry(mclist, &priv->curr_list, list) {
1778                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1779                 mc_list[5] = priv->port;
1780                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1781                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1782                 if (mclist->tunnel_reg_id)
1783                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1784         }
1785         mlx4_en_clear_list(dev);
1786         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1787                 list_del(&mclist->list);
1788                 kfree(mclist);
1789         }
1790
1791         /* Flush multicast filter */
1792         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1793
1794         /* Remove flow steering rules for the port*/
1795         if (mdev->dev->caps.steering_mode ==
1796             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1797                 ASSERT_RTNL();
1798                 list_for_each_entry_safe(flow, tmp_flow,
1799                                          &priv->ethtool_list, list) {
1800                         mlx4_flow_detach(mdev->dev, flow->id);
1801                         list_del(&flow->list);
1802                 }
1803         }
1804
1805         mlx4_en_destroy_drop_qp(priv);
1806
1807         /* Free TX Rings */
1808         for (i = 0; i < priv->tx_ring_num; i++) {
1809                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1810                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1811         }
1812         msleep(10);
1813
1814         for (i = 0; i < priv->tx_ring_num; i++)
1815                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1816
1817         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1818                 mlx4_en_delete_rss_steer_rules(priv);
1819
1820         /* Free RSS qps */
1821         mlx4_en_release_rss_steer(priv);
1822
1823         /* Unregister Mac address for the port */
1824         mlx4_en_put_qp(priv);
1825         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1826                 mdev->mac_removed[priv->port] = 1;
1827
1828         /* Free RX Rings */
1829         for (i = 0; i < priv->rx_ring_num; i++) {
1830                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1831
1832                 napi_synchronize(&cq->napi);
1833                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1834                 mlx4_en_deactivate_cq(priv, cq);
1835
1836                 mlx4_en_free_affinity_hint(priv, i);
1837         }
1838 }
1839
1840 static void mlx4_en_restart(struct work_struct *work)
1841 {
1842         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1843                                                  watchdog_task);
1844         struct mlx4_en_dev *mdev = priv->mdev;
1845         struct net_device *dev = priv->dev;
1846
1847         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1848
1849         mutex_lock(&mdev->state_lock);
1850         if (priv->port_up) {
1851                 mlx4_en_stop_port(dev, 1);
1852                 if (mlx4_en_start_port(dev))
1853                         en_err(priv, "Failed restarting port %d\n", priv->port);
1854         }
1855         mutex_unlock(&mdev->state_lock);
1856 }
1857
1858 static void mlx4_en_clear_stats(struct net_device *dev)
1859 {
1860         struct mlx4_en_priv *priv = netdev_priv(dev);
1861         struct mlx4_en_dev *mdev = priv->mdev;
1862         int i;
1863
1864         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1865                 en_dbg(HW, priv, "Failed dumping statistics\n");
1866
1867         memset(&priv->stats, 0, sizeof(priv->stats));
1868         memset(&priv->pstats, 0, sizeof(priv->pstats));
1869         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1870         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1871         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1872         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1873         memset(&priv->rx_priority_flowstats, 0,
1874                sizeof(priv->rx_priority_flowstats));
1875         memset(&priv->tx_priority_flowstats, 0,
1876                sizeof(priv->tx_priority_flowstats));
1877         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1878
1879         for (i = 0; i < priv->tx_ring_num; i++) {
1880                 priv->tx_ring[i]->bytes = 0;
1881                 priv->tx_ring[i]->packets = 0;
1882                 priv->tx_ring[i]->tx_csum = 0;
1883         }
1884         for (i = 0; i < priv->rx_ring_num; i++) {
1885                 priv->rx_ring[i]->bytes = 0;
1886                 priv->rx_ring[i]->packets = 0;
1887                 priv->rx_ring[i]->csum_ok = 0;
1888                 priv->rx_ring[i]->csum_none = 0;
1889                 priv->rx_ring[i]->csum_complete = 0;
1890         }
1891 }
1892
1893 static int mlx4_en_open(struct net_device *dev)
1894 {
1895         struct mlx4_en_priv *priv = netdev_priv(dev);
1896         struct mlx4_en_dev *mdev = priv->mdev;
1897         int err = 0;
1898
1899         mutex_lock(&mdev->state_lock);
1900
1901         if (!mdev->device_up) {
1902                 en_err(priv, "Cannot open - device down/disabled\n");
1903                 err = -EBUSY;
1904                 goto out;
1905         }
1906
1907         /* Reset HW statistics and SW counters */
1908         mlx4_en_clear_stats(dev);
1909
1910         err = mlx4_en_start_port(dev);
1911         if (err)
1912                 en_err(priv, "Failed starting port:%d\n", priv->port);
1913
1914 out:
1915         mutex_unlock(&mdev->state_lock);
1916         return err;
1917 }
1918
1919
1920 static int mlx4_en_close(struct net_device *dev)
1921 {
1922         struct mlx4_en_priv *priv = netdev_priv(dev);
1923         struct mlx4_en_dev *mdev = priv->mdev;
1924
1925         en_dbg(IFDOWN, priv, "Close port called\n");
1926
1927         mutex_lock(&mdev->state_lock);
1928
1929         mlx4_en_stop_port(dev, 0);
1930         netif_carrier_off(dev);
1931
1932         mutex_unlock(&mdev->state_lock);
1933         return 0;
1934 }
1935
1936 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1937 {
1938         int i;
1939
1940 #ifdef CONFIG_RFS_ACCEL
1941         priv->dev->rx_cpu_rmap = NULL;
1942 #endif
1943
1944         for (i = 0; i < priv->tx_ring_num; i++) {
1945                 if (priv->tx_ring && priv->tx_ring[i])
1946                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1947                 if (priv->tx_cq && priv->tx_cq[i])
1948                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1949         }
1950
1951         for (i = 0; i < priv->rx_ring_num; i++) {
1952                 if (priv->rx_ring[i])
1953                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1954                                 priv->prof->rx_ring_size, priv->stride);
1955                 if (priv->rx_cq[i])
1956                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1957         }
1958
1959 }
1960
1961 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1962 {
1963         struct mlx4_en_port_profile *prof = priv->prof;
1964         int i;
1965         int node;
1966
1967         /* Create tx Rings */
1968         for (i = 0; i < priv->tx_ring_num; i++) {
1969                 node = cpu_to_node(i % num_online_cpus());
1970                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1971                                       prof->tx_ring_size, i, TX, node))
1972                         goto err;
1973
1974                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
1975                                            prof->tx_ring_size, TXBB_SIZE,
1976                                            node, i))
1977                         goto err;
1978         }
1979
1980         /* Create rx Rings */
1981         for (i = 0; i < priv->rx_ring_num; i++) {
1982                 node = cpu_to_node(i % num_online_cpus());
1983                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1984                                       prof->rx_ring_size, i, RX, node))
1985                         goto err;
1986
1987                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1988                                            prof->rx_ring_size, priv->stride,
1989                                            node))
1990                         goto err;
1991         }
1992
1993 #ifdef CONFIG_RFS_ACCEL
1994         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
1995 #endif
1996
1997         return 0;
1998
1999 err:
2000         en_err(priv, "Failed to allocate NIC resources\n");
2001         for (i = 0; i < priv->rx_ring_num; i++) {
2002                 if (priv->rx_ring[i])
2003                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2004                                                 prof->rx_ring_size,
2005                                                 priv->stride);
2006                 if (priv->rx_cq[i])
2007                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2008         }
2009         for (i = 0; i < priv->tx_ring_num; i++) {
2010                 if (priv->tx_ring[i])
2011                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2012                 if (priv->tx_cq[i])
2013                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2014         }
2015         return -ENOMEM;
2016 }
2017
2018
2019 void mlx4_en_destroy_netdev(struct net_device *dev)
2020 {
2021         struct mlx4_en_priv *priv = netdev_priv(dev);
2022         struct mlx4_en_dev *mdev = priv->mdev;
2023
2024         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2025
2026         /* Unregister device - this will close the port if it was up */
2027         if (priv->registered)
2028                 unregister_netdev(dev);
2029
2030         if (priv->allocated)
2031                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2032
2033         cancel_delayed_work(&priv->stats_task);
2034         cancel_delayed_work(&priv->service_task);
2035         /* flush any pending task for this netdev */
2036         flush_workqueue(mdev->workqueue);
2037
2038         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2039                 mlx4_en_remove_timestamp(mdev);
2040
2041         /* Detach the netdev so tasks would not attempt to access it */
2042         mutex_lock(&mdev->state_lock);
2043         mdev->pndev[priv->port] = NULL;
2044         mdev->upper[priv->port] = NULL;
2045         mutex_unlock(&mdev->state_lock);
2046
2047         mlx4_en_free_resources(priv);
2048
2049         kfree(priv->tx_ring);
2050         kfree(priv->tx_cq);
2051
2052         free_netdev(dev);
2053 }
2054
2055 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2056 {
2057         struct mlx4_en_priv *priv = netdev_priv(dev);
2058         struct mlx4_en_dev *mdev = priv->mdev;
2059         int err = 0;
2060
2061         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2062                  dev->mtu, new_mtu);
2063
2064         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2065                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2066                 return -EPERM;
2067         }
2068         dev->mtu = new_mtu;
2069
2070         if (netif_running(dev)) {
2071                 mutex_lock(&mdev->state_lock);
2072                 if (!mdev->device_up) {
2073                         /* NIC is probably restarting - let watchdog task reset
2074                          * the port */
2075                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2076                 } else {
2077                         mlx4_en_stop_port(dev, 1);
2078                         err = mlx4_en_start_port(dev);
2079                         if (err) {
2080                                 en_err(priv, "Failed restarting port:%d\n",
2081                                          priv->port);
2082                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2083                         }
2084                 }
2085                 mutex_unlock(&mdev->state_lock);
2086         }
2087         return 0;
2088 }
2089
2090 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2091 {
2092         struct mlx4_en_priv *priv = netdev_priv(dev);
2093         struct mlx4_en_dev *mdev = priv->mdev;
2094         struct hwtstamp_config config;
2095
2096         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2097                 return -EFAULT;
2098
2099         /* reserved for future extensions */
2100         if (config.flags)
2101                 return -EINVAL;
2102
2103         /* device doesn't support time stamping */
2104         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2105                 return -EINVAL;
2106
2107         /* TX HW timestamp */
2108         switch (config.tx_type) {
2109         case HWTSTAMP_TX_OFF:
2110         case HWTSTAMP_TX_ON:
2111                 break;
2112         default:
2113                 return -ERANGE;
2114         }
2115
2116         /* RX HW timestamp */
2117         switch (config.rx_filter) {
2118         case HWTSTAMP_FILTER_NONE:
2119                 break;
2120         case HWTSTAMP_FILTER_ALL:
2121         case HWTSTAMP_FILTER_SOME:
2122         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2123         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2124         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2125         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2126         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2127         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2128         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2129         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2130         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2131         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2132         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2133         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2134                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2135                 break;
2136         default:
2137                 return -ERANGE;
2138         }
2139
2140         if (mlx4_en_reset_config(dev, config, dev->features)) {
2141                 config.tx_type = HWTSTAMP_TX_OFF;
2142                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2143         }
2144
2145         return copy_to_user(ifr->ifr_data, &config,
2146                             sizeof(config)) ? -EFAULT : 0;
2147 }
2148
2149 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2150 {
2151         struct mlx4_en_priv *priv = netdev_priv(dev);
2152
2153         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2154                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2155 }
2156
2157 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2158 {
2159         switch (cmd) {
2160         case SIOCSHWTSTAMP:
2161                 return mlx4_en_hwtstamp_set(dev, ifr);
2162         case SIOCGHWTSTAMP:
2163                 return mlx4_en_hwtstamp_get(dev, ifr);
2164         default:
2165                 return -EOPNOTSUPP;
2166         }
2167 }
2168
2169 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2170                                               netdev_features_t features)
2171 {
2172         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2173         struct mlx4_en_dev *mdev = en_priv->mdev;
2174
2175         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2176          * enable/disable make sure S-TAG flag is always in same state as
2177          * C-TAG.
2178          */
2179         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2180             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2181                 features |= NETIF_F_HW_VLAN_STAG_RX;
2182         else
2183                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2184
2185         return features;
2186 }
2187
2188 static int mlx4_en_set_features(struct net_device *netdev,
2189                 netdev_features_t features)
2190 {
2191         struct mlx4_en_priv *priv = netdev_priv(netdev);
2192         bool reset = false;
2193         int ret = 0;
2194
2195         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2196                 en_info(priv, "Turn %s RX-FCS\n",
2197                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2198                 reset = true;
2199         }
2200
2201         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2202                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2203
2204                 en_info(priv, "Turn %s RX-ALL\n",
2205                         ignore_fcs_value ? "ON" : "OFF");
2206                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2207                                               priv->port, ignore_fcs_value);
2208                 if (ret)
2209                         return ret;
2210         }
2211
2212         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2213                 en_info(priv, "Turn %s RX vlan strip offload\n",
2214                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2215                 reset = true;
2216         }
2217
2218         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2219                 en_info(priv, "Turn %s TX vlan strip offload\n",
2220                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2221
2222         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2223                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2224                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2225
2226         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2227                 en_info(priv, "Turn %s loopback\n",
2228                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2229                 mlx4_en_update_loopback_state(netdev, features);
2230         }
2231
2232         if (reset) {
2233                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2234                                            features);
2235                 if (ret)
2236                         return ret;
2237         }
2238
2239         return 0;
2240 }
2241
2242 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2243 {
2244         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2245         struct mlx4_en_dev *mdev = en_priv->mdev;
2246         u64 mac_u64 = mlx4_mac_to_u64(mac);
2247
2248         if (is_multicast_ether_addr(mac))
2249                 return -EINVAL;
2250
2251         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2252 }
2253
2254 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2255 {
2256         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2257         struct mlx4_en_dev *mdev = en_priv->mdev;
2258
2259         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2260 }
2261
2262 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2263                                int max_tx_rate)
2264 {
2265         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2266         struct mlx4_en_dev *mdev = en_priv->mdev;
2267
2268         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2269                                 max_tx_rate);
2270 }
2271
2272 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2273 {
2274         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2275         struct mlx4_en_dev *mdev = en_priv->mdev;
2276
2277         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2278 }
2279
2280 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2281 {
2282         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2283         struct mlx4_en_dev *mdev = en_priv->mdev;
2284
2285         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2286 }
2287
2288 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2289 {
2290         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2291         struct mlx4_en_dev *mdev = en_priv->mdev;
2292
2293         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2294 }
2295
2296 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2297                                 struct ifla_vf_stats *vf_stats)
2298 {
2299         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2300         struct mlx4_en_dev *mdev = en_priv->mdev;
2301
2302         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2303 }
2304
2305 #define PORT_ID_BYTE_LEN 8
2306 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2307                                     struct netdev_phys_item_id *ppid)
2308 {
2309         struct mlx4_en_priv *priv = netdev_priv(dev);
2310         struct mlx4_dev *mdev = priv->mdev->dev;
2311         int i;
2312         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2313
2314         if (!phys_port_id)
2315                 return -EOPNOTSUPP;
2316
2317         ppid->id_len = sizeof(phys_port_id);
2318         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2319                 ppid->id[i] =  phys_port_id & 0xff;
2320                 phys_port_id >>= 8;
2321         }
2322         return 0;
2323 }
2324
2325 #ifdef CONFIG_MLX4_EN_VXLAN
2326 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2327 {
2328         int ret;
2329         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2330                                                  vxlan_add_task);
2331
2332         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2333         if (ret)
2334                 goto out;
2335
2336         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2337                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2338 out:
2339         if (ret) {
2340                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2341                 return;
2342         }
2343
2344         /* set offloads */
2345         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2346                                       NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2347 }
2348
2349 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2350 {
2351         int ret;
2352         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2353                                                  vxlan_del_task);
2354         /* unset offloads */
2355         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2356                                       NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL);
2357
2358         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2359                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2360         if (ret)
2361                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2362
2363         priv->vxlan_port = 0;
2364 }
2365
2366 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2367                                    sa_family_t sa_family, __be16 port)
2368 {
2369         struct mlx4_en_priv *priv = netdev_priv(dev);
2370         __be16 current_port;
2371
2372         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2373                 return;
2374
2375         if (sa_family == AF_INET6)
2376                 return;
2377
2378         current_port = priv->vxlan_port;
2379         if (current_port && current_port != port) {
2380                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2381                         ntohs(current_port), ntohs(port));
2382                 return;
2383         }
2384
2385         priv->vxlan_port = port;
2386         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2387 }
2388
2389 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2390                                    sa_family_t sa_family, __be16 port)
2391 {
2392         struct mlx4_en_priv *priv = netdev_priv(dev);
2393         __be16 current_port;
2394
2395         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2396                 return;
2397
2398         if (sa_family == AF_INET6)
2399                 return;
2400
2401         current_port = priv->vxlan_port;
2402         if (current_port != port) {
2403                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2404                 return;
2405         }
2406
2407         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2408 }
2409
2410 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2411                                                 struct net_device *dev,
2412                                                 netdev_features_t features)
2413 {
2414         features = vlan_features_check(skb, features);
2415         return vxlan_features_check(skb, features);
2416 }
2417 #endif
2418
2419 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2420 {
2421         struct mlx4_en_priv *priv = netdev_priv(dev);
2422         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[queue_index];
2423         struct mlx4_update_qp_params params;
2424         int err;
2425
2426         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2427                 return -EOPNOTSUPP;
2428
2429         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2430         if (maxrate >> 12) {
2431                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2432                 params.rate_val  = maxrate / 1000;
2433         } else if (maxrate) {
2434                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2435                 params.rate_val  = maxrate;
2436         } else { /* zero serves to revoke the QP rate-limitation */
2437                 params.rate_unit = 0;
2438                 params.rate_val  = 0;
2439         }
2440
2441         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2442                              &params);
2443         return err;
2444 }
2445
2446 static const struct net_device_ops mlx4_netdev_ops = {
2447         .ndo_open               = mlx4_en_open,
2448         .ndo_stop               = mlx4_en_close,
2449         .ndo_start_xmit         = mlx4_en_xmit,
2450         .ndo_select_queue       = mlx4_en_select_queue,
2451         .ndo_get_stats          = mlx4_en_get_stats,
2452         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2453         .ndo_set_mac_address    = mlx4_en_set_mac,
2454         .ndo_validate_addr      = eth_validate_addr,
2455         .ndo_change_mtu         = mlx4_en_change_mtu,
2456         .ndo_do_ioctl           = mlx4_en_ioctl,
2457         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2458         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2459         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2460 #ifdef CONFIG_NET_POLL_CONTROLLER
2461         .ndo_poll_controller    = mlx4_en_netpoll,
2462 #endif
2463         .ndo_set_features       = mlx4_en_set_features,
2464         .ndo_fix_features       = mlx4_en_fix_features,
2465         .ndo_setup_tc           = mlx4_en_setup_tc,
2466 #ifdef CONFIG_RFS_ACCEL
2467         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2468 #endif
2469         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2470 #ifdef CONFIG_MLX4_EN_VXLAN
2471         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2472         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2473         .ndo_features_check     = mlx4_en_features_check,
2474 #endif
2475         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2476 };
2477
2478 static const struct net_device_ops mlx4_netdev_ops_master = {
2479         .ndo_open               = mlx4_en_open,
2480         .ndo_stop               = mlx4_en_close,
2481         .ndo_start_xmit         = mlx4_en_xmit,
2482         .ndo_select_queue       = mlx4_en_select_queue,
2483         .ndo_get_stats          = mlx4_en_get_stats,
2484         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2485         .ndo_set_mac_address    = mlx4_en_set_mac,
2486         .ndo_validate_addr      = eth_validate_addr,
2487         .ndo_change_mtu         = mlx4_en_change_mtu,
2488         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2489         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2490         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2491         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2492         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2493         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2494         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2495         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2496         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2497         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2498 #ifdef CONFIG_NET_POLL_CONTROLLER
2499         .ndo_poll_controller    = mlx4_en_netpoll,
2500 #endif
2501         .ndo_set_features       = mlx4_en_set_features,
2502         .ndo_fix_features       = mlx4_en_fix_features,
2503         .ndo_setup_tc           = mlx4_en_setup_tc,
2504 #ifdef CONFIG_RFS_ACCEL
2505         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2506 #endif
2507         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2508 #ifdef CONFIG_MLX4_EN_VXLAN
2509         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2510         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2511         .ndo_features_check     = mlx4_en_features_check,
2512 #endif
2513         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2514 };
2515
2516 struct mlx4_en_bond {
2517         struct work_struct work;
2518         struct mlx4_en_priv *priv;
2519         int is_bonded;
2520         struct mlx4_port_map port_map;
2521 };
2522
2523 static void mlx4_en_bond_work(struct work_struct *work)
2524 {
2525         struct mlx4_en_bond *bond = container_of(work,
2526                                                      struct mlx4_en_bond,
2527                                                      work);
2528         int err = 0;
2529         struct mlx4_dev *dev = bond->priv->mdev->dev;
2530
2531         if (bond->is_bonded) {
2532                 if (!mlx4_is_bonded(dev)) {
2533                         err = mlx4_bond(dev);
2534                         if (err)
2535                                 en_err(bond->priv, "Fail to bond device\n");
2536                 }
2537                 if (!err) {
2538                         err = mlx4_port_map_set(dev, &bond->port_map);
2539                         if (err)
2540                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2541                                        bond->port_map.port1,
2542                                        bond->port_map.port2,
2543                                        err);
2544                 }
2545         } else if (mlx4_is_bonded(dev)) {
2546                 err = mlx4_unbond(dev);
2547                 if (err)
2548                         en_err(bond->priv, "Fail to unbond device\n");
2549         }
2550         dev_put(bond->priv->dev);
2551         kfree(bond);
2552 }
2553
2554 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2555                                    u8 v2p_p1, u8 v2p_p2)
2556 {
2557         struct mlx4_en_bond *bond = NULL;
2558
2559         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2560         if (!bond)
2561                 return -ENOMEM;
2562
2563         INIT_WORK(&bond->work, mlx4_en_bond_work);
2564         bond->priv = priv;
2565         bond->is_bonded = is_bonded;
2566         bond->port_map.port1 = v2p_p1;
2567         bond->port_map.port2 = v2p_p2;
2568         dev_hold(priv->dev);
2569         queue_work(priv->mdev->workqueue, &bond->work);
2570         return 0;
2571 }
2572
2573 int mlx4_en_netdev_event(struct notifier_block *this,
2574                          unsigned long event, void *ptr)
2575 {
2576         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2577         u8 port = 0;
2578         struct mlx4_en_dev *mdev;
2579         struct mlx4_dev *dev;
2580         int i, num_eth_ports = 0;
2581         bool do_bond = true;
2582         struct mlx4_en_priv *priv;
2583         u8 v2p_port1 = 0;
2584         u8 v2p_port2 = 0;
2585
2586         if (!net_eq(dev_net(ndev), &init_net))
2587                 return NOTIFY_DONE;
2588
2589         mdev = container_of(this, struct mlx4_en_dev, nb);
2590         dev = mdev->dev;
2591
2592         /* Go into this mode only when two network devices set on two ports
2593          * of the same mlx4 device are slaves of the same bonding master
2594          */
2595         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2596                 ++num_eth_ports;
2597                 if (!port && (mdev->pndev[i] == ndev))
2598                         port = i;
2599                 mdev->upper[i] = mdev->pndev[i] ?
2600                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2601                 /* condition not met: network device is a slave */
2602                 if (!mdev->upper[i])
2603                         do_bond = false;
2604                 if (num_eth_ports < 2)
2605                         continue;
2606                 /* condition not met: same master */
2607                 if (mdev->upper[i] != mdev->upper[i-1])
2608                         do_bond = false;
2609         }
2610         /* condition not met: 2 salves */
2611         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2612
2613         /* handle only events that come with enough info */
2614         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2615                 return NOTIFY_DONE;
2616
2617         priv = netdev_priv(ndev);
2618         if (do_bond) {
2619                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2620                 struct netdev_bonding_info *bonding_info =
2621                         &notifier_info->bonding_info;
2622
2623                 /* required mode 1, 2 or 4 */
2624                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2625                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2626                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2627                         do_bond = false;
2628
2629                 /* require exactly 2 slaves */
2630                 if (bonding_info->master.num_slaves != 2)
2631                         do_bond = false;
2632
2633                 /* calc v2p */
2634                 if (do_bond) {
2635                         if (bonding_info->master.bond_mode ==
2636                             BOND_MODE_ACTIVEBACKUP) {
2637                                 /* in active-backup mode virtual ports are
2638                                  * mapped to the physical port of the active
2639                                  * slave */
2640                                 if (bonding_info->slave.state ==
2641                                     BOND_STATE_BACKUP) {
2642                                         if (port == 1) {
2643                                                 v2p_port1 = 2;
2644                                                 v2p_port2 = 2;
2645                                         } else {
2646                                                 v2p_port1 = 1;
2647                                                 v2p_port2 = 1;
2648                                         }
2649                                 } else { /* BOND_STATE_ACTIVE */
2650                                         if (port == 1) {
2651                                                 v2p_port1 = 1;
2652                                                 v2p_port2 = 1;
2653                                         } else {
2654                                                 v2p_port1 = 2;
2655                                                 v2p_port2 = 2;
2656                                         }
2657                                 }
2658                         } else { /* Active-Active */
2659                                 /* in active-active mode a virtual port is
2660                                  * mapped to the native physical port if and only
2661                                  * if the physical port is up */
2662                                 __s8 link = bonding_info->slave.link;
2663
2664                                 if (port == 1)
2665                                         v2p_port2 = 2;
2666                                 else
2667                                         v2p_port1 = 1;
2668                                 if ((link == BOND_LINK_UP) ||
2669                                     (link == BOND_LINK_FAIL)) {
2670                                         if (port == 1)
2671                                                 v2p_port1 = 1;
2672                                         else
2673                                                 v2p_port2 = 2;
2674                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
2675                                         if (port == 1)
2676                                                 v2p_port1 = 2;
2677                                         else
2678                                                 v2p_port2 = 1;
2679                                 }
2680                         }
2681                 }
2682         }
2683
2684         mlx4_en_queue_bond_work(priv, do_bond,
2685                                 v2p_port1, v2p_port2);
2686
2687         return NOTIFY_DONE;
2688 }
2689
2690 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
2691                                      struct mlx4_en_stats_bitmap *stats_bitmap,
2692                                      u8 rx_ppp, u8 rx_pause,
2693                                      u8 tx_ppp, u8 tx_pause)
2694 {
2695         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
2696
2697         if (!mlx4_is_slave(dev) &&
2698             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
2699                 mutex_lock(&stats_bitmap->mutex);
2700                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
2701
2702                 if (rx_ppp)
2703                         bitmap_set(stats_bitmap->bitmap, last_i,
2704                                    NUM_FLOW_PRIORITY_STATS_RX);
2705                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
2706
2707                 if (rx_pause && !(rx_ppp))
2708                         bitmap_set(stats_bitmap->bitmap, last_i,
2709                                    NUM_FLOW_STATS_RX);
2710                 last_i += NUM_FLOW_STATS_RX;
2711
2712                 if (tx_ppp)
2713                         bitmap_set(stats_bitmap->bitmap, last_i,
2714                                    NUM_FLOW_PRIORITY_STATS_TX);
2715                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
2716
2717                 if (tx_pause && !(tx_ppp))
2718                         bitmap_set(stats_bitmap->bitmap, last_i,
2719                                    NUM_FLOW_STATS_TX);
2720                 last_i += NUM_FLOW_STATS_TX;
2721
2722                 mutex_unlock(&stats_bitmap->mutex);
2723         }
2724 }
2725
2726 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
2727                               struct mlx4_en_stats_bitmap *stats_bitmap,
2728                               u8 rx_ppp, u8 rx_pause,
2729                               u8 tx_ppp, u8 tx_pause)
2730 {
2731         int last_i = 0;
2732
2733         mutex_init(&stats_bitmap->mutex);
2734         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
2735
2736         if (mlx4_is_slave(dev)) {
2737                 bitmap_set(stats_bitmap->bitmap, last_i +
2738                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
2739                 bitmap_set(stats_bitmap->bitmap, last_i +
2740                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
2741                 bitmap_set(stats_bitmap->bitmap, last_i +
2742                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
2743                 bitmap_set(stats_bitmap->bitmap, last_i +
2744                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
2745                 bitmap_set(stats_bitmap->bitmap, last_i +
2746                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
2747                 bitmap_set(stats_bitmap->bitmap, last_i +
2748                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
2749         } else {
2750                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
2751         }
2752         last_i += NUM_MAIN_STATS;
2753
2754         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
2755         last_i += NUM_PORT_STATS;
2756
2757         if (mlx4_is_master(dev))
2758                 bitmap_set(stats_bitmap->bitmap, last_i,
2759                            NUM_PF_STATS);
2760         last_i += NUM_PF_STATS;
2761
2762         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
2763                                         rx_ppp, rx_pause,
2764                                         tx_ppp, tx_pause);
2765         last_i += NUM_FLOW_STATS;
2766
2767         if (!mlx4_is_slave(dev))
2768                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
2769 }
2770
2771 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2772                         struct mlx4_en_port_profile *prof)
2773 {
2774         struct net_device *dev;
2775         struct mlx4_en_priv *priv;
2776         int i;
2777         int err;
2778
2779         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2780                                  MAX_TX_RINGS, MAX_RX_RINGS);
2781         if (dev == NULL)
2782                 return -ENOMEM;
2783
2784         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2785         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2786
2787         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
2788         dev->dev_port = port - 1;
2789
2790         /*
2791          * Initialize driver private data
2792          */
2793
2794         priv = netdev_priv(dev);
2795         memset(priv, 0, sizeof(struct mlx4_en_priv));
2796         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
2797         spin_lock_init(&priv->stats_lock);
2798         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2799         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2800         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2801         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2802         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2803 #ifdef CONFIG_MLX4_EN_VXLAN
2804         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2805         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2806 #endif
2807 #ifdef CONFIG_RFS_ACCEL
2808         INIT_LIST_HEAD(&priv->filters);
2809         spin_lock_init(&priv->filters_lock);
2810 #endif
2811
2812         priv->dev = dev;
2813         priv->mdev = mdev;
2814         priv->ddev = &mdev->pdev->dev;
2815         priv->prof = prof;
2816         priv->port = port;
2817         priv->port_up = false;
2818         priv->flags = prof->flags;
2819         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
2820         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2821                         MLX4_WQE_CTRL_SOLICITED);
2822         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2823         priv->tx_ring_num = prof->tx_ring_num;
2824         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2825         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
2826
2827         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2828                                 GFP_KERNEL);
2829         if (!priv->tx_ring) {
2830                 err = -ENOMEM;
2831                 goto out;
2832         }
2833         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2834                               GFP_KERNEL);
2835         if (!priv->tx_cq) {
2836                 err = -ENOMEM;
2837                 goto out;
2838         }
2839         priv->rx_ring_num = prof->rx_ring_num;
2840         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2841         priv->cqe_size = mdev->dev->caps.cqe_size;
2842         priv->mac_index = -1;
2843         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2844 #ifdef CONFIG_MLX4_EN_DCB
2845         if (!mlx4_is_slave(priv->mdev->dev)) {
2846                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
2847                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2848                 } else {
2849                         en_info(priv, "enabling only PFC DCB ops\n");
2850                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2851                 }
2852         }
2853 #endif
2854
2855         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2856                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2857
2858         /* Query for default mac and max mtu */
2859         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2860
2861         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
2862             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
2863                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
2864
2865         /* Set default MAC */
2866         dev->addr_len = ETH_ALEN;
2867         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2868         if (!is_valid_ether_addr(dev->dev_addr)) {
2869                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2870                        priv->port, dev->dev_addr);
2871                 err = -EINVAL;
2872                 goto out;
2873         } else if (mlx4_is_slave(priv->mdev->dev) &&
2874                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
2875                 /* Random MAC was assigned in mlx4_slave_cap
2876                  * in mlx4_core module
2877                  */
2878                 dev->addr_assign_type |= NET_ADDR_RANDOM;
2879                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2880         }
2881
2882         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
2883
2884         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2885                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2886         err = mlx4_en_alloc_resources(priv);
2887         if (err)
2888                 goto out;
2889
2890         /* Initialize time stamping config */
2891         priv->hwtstamp_config.flags = 0;
2892         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2893         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2894
2895         /* Allocate page for receive rings */
2896         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2897                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2898         if (err) {
2899                 en_err(priv, "Failed to allocate page for rx qps\n");
2900                 goto out;
2901         }
2902         priv->allocated = 1;
2903
2904         /*
2905          * Initialize netdev entry points
2906          */
2907         if (mlx4_is_master(priv->mdev->dev))
2908                 dev->netdev_ops = &mlx4_netdev_ops_master;
2909         else
2910                 dev->netdev_ops = &mlx4_netdev_ops;
2911         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2912         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2913         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2914
2915         dev->ethtool_ops = &mlx4_en_ethtool_ops;
2916
2917         /*
2918          * Set driver features
2919          */
2920         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2921         if (mdev->LSO_support)
2922                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2923
2924         dev->vlan_features = dev->hw_features;
2925
2926         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2927         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2928                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2929                         NETIF_F_HW_VLAN_CTAG_FILTER;
2930         dev->hw_features |= NETIF_F_LOOPBACK |
2931                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
2932
2933         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
2934                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
2935                         NETIF_F_HW_VLAN_STAG_FILTER;
2936                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
2937         }
2938
2939         if (mlx4_is_slave(mdev->dev)) {
2940                 int phv;
2941
2942                 err = get_phv_bit(mdev->dev, port, &phv);
2943                 if (!err && phv) {
2944                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
2945                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
2946                 }
2947         } else {
2948                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
2949                     !(mdev->dev->caps.flags2 &
2950                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2951                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
2952         }
2953
2954         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
2955                 dev->hw_features |= NETIF_F_RXFCS;
2956
2957         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
2958                 dev->hw_features |= NETIF_F_RXALL;
2959
2960         if (mdev->dev->caps.steering_mode ==
2961             MLX4_STEERING_MODE_DEVICE_MANAGED &&
2962             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
2963                 dev->hw_features |= NETIF_F_NTUPLE;
2964
2965         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2966                 dev->priv_flags |= IFF_UNICAST_FLT;
2967
2968         /* Setting a default hash function value */
2969         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
2970                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
2971         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
2972                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
2973         } else {
2974                 en_warn(priv,
2975                         "No RSS hash capabilities exposed, using Toeplitz\n");
2976                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
2977         }
2978
2979         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2980                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2981                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL;
2982         }
2983
2984         mdev->pndev[port] = dev;
2985         mdev->upper[port] = NULL;
2986
2987         netif_carrier_off(dev);
2988         mlx4_en_set_default_moderation(priv);
2989
2990         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2991         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2992
2993         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2994
2995         /* Configure port */
2996         mlx4_en_calc_rx_buf(dev);
2997         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2998                                     priv->rx_skb_size + ETH_FCS_LEN,
2999                                     prof->tx_pause, prof->tx_ppp,
3000                                     prof->rx_pause, prof->rx_ppp);
3001         if (err) {
3002                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3003                        priv->port, err);
3004                 goto out;
3005         }
3006
3007         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3008                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3009                 if (err) {
3010                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3011                                err);
3012                         goto out;
3013                 }
3014         }
3015
3016         /* Init port */
3017         en_warn(priv, "Initializing port\n");
3018         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3019         if (err) {
3020                 en_err(priv, "Failed Initializing port\n");
3021                 goto out;
3022         }
3023         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3024
3025         /* Initialize time stamp mechanism */
3026         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3027                 mlx4_en_init_timestamp(mdev);
3028
3029         queue_delayed_work(mdev->workqueue, &priv->service_task,
3030                            SERVICE_TASK_DELAY);
3031
3032         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3033                                  mdev->profile.prof[priv->port].rx_ppp,
3034                                  mdev->profile.prof[priv->port].rx_pause,
3035                                  mdev->profile.prof[priv->port].tx_ppp,
3036                                  mdev->profile.prof[priv->port].tx_pause);
3037
3038         err = register_netdev(dev);
3039         if (err) {
3040                 en_err(priv, "Netdev registration failed for port %d\n", port);
3041                 goto out;
3042         }
3043
3044         priv->registered = 1;
3045
3046         return 0;
3047
3048 out:
3049         mlx4_en_destroy_netdev(dev);
3050         return err;
3051 }
3052
3053 int mlx4_en_reset_config(struct net_device *dev,
3054                          struct hwtstamp_config ts_config,
3055                          netdev_features_t features)
3056 {
3057         struct mlx4_en_priv *priv = netdev_priv(dev);
3058         struct mlx4_en_dev *mdev = priv->mdev;
3059         int port_up = 0;
3060         int err = 0;
3061
3062         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3063             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3064             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3065             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3066                 return 0; /* Nothing to change */
3067
3068         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3069             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3070             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3071                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3072                 return -EINVAL;
3073         }
3074
3075         mutex_lock(&mdev->state_lock);
3076         if (priv->port_up) {
3077                 port_up = 1;
3078                 mlx4_en_stop_port(dev, 1);
3079         }
3080
3081         mlx4_en_free_resources(priv);
3082
3083         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3084                 ts_config.rx_filter, !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3085
3086         priv->hwtstamp_config.tx_type = ts_config.tx_type;
3087         priv->hwtstamp_config.rx_filter = ts_config.rx_filter;
3088
3089         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3090                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3091                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3092                 else
3093                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3094         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3095                 /* RX time-stamping is OFF, update the RX vlan offload
3096                  * to the latest wanted state
3097                  */
3098                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3099                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3100                 else
3101                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3102         }
3103
3104         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3105                 if (features & NETIF_F_RXFCS)
3106                         dev->features |= NETIF_F_RXFCS;
3107                 else
3108                         dev->features &= ~NETIF_F_RXFCS;
3109         }
3110
3111         /* RX vlan offload and RX time-stamping can't co-exist !
3112          * Regardless of the caller's choice,
3113          * Turn Off RX vlan offload in case of time-stamping is ON
3114          */
3115         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3116                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3117                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3118                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3119         }
3120
3121         err = mlx4_en_alloc_resources(priv);
3122         if (err) {
3123                 en_err(priv, "Failed reallocating port resources\n");
3124                 goto out;
3125         }
3126         if (port_up) {
3127                 err = mlx4_en_start_port(dev);
3128                 if (err)
3129                         en_err(priv, "Failed starting port\n");
3130         }
3131
3132 out:
3133         mutex_unlock(&mdev->state_lock);
3134         netdev_features_change(dev);
3135         return err;
3136 }