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
  43 #include <linux/mlx4/driver.h>
  44 #include <linux/mlx4/device.h>
  45 #include <linux/mlx4/cmd.h>
  46 #include <linux/mlx4/cq.h>
  47
  48 #include "mlx4_en.h"
  49 #include "en_port.h"
  50
  51 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  52 {
  53         struct mlx4_en_priv *priv = netdev_priv(dev);
  54         int i;
  55         unsigned int offset = 0;
  56
  57         if (up && up != MLX4_EN_NUM_UP)
  58                 return -EINVAL;
  59
  60         netdev_set_num_tc(dev, up);
  61
  62         /* Partition Tx queues evenly amongst UP's */
  63         for (i = 0; i < up; i++) {
  64                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  65                 offset += priv->num_tx_rings_p_up;
  66         }
  67
  68         return 0;
  69 }
  70
  71 #ifdef CONFIG_NET_RX_BUSY_POLL
  72 /* must be called with local_bh_disable()d */
  73 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  74 {
  75         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  76         struct net_device *dev = cq->dev;
  77         struct mlx4_en_priv *priv = netdev_priv(dev);
  78         struct mlx4_en_rx_ring *rx_ring = &priv->rx_ring[cq->ring];
  79         int done;
  80
  81         if (!priv->port_up)
  82                 return LL_FLUSH_FAILED;
  83
  84         if (!mlx4_en_cq_lock_poll(cq))
  85                 return LL_FLUSH_BUSY;
  86
  87         done = mlx4_en_process_rx_cq(dev, cq, 4);
  88         if (likely(done))
  89                 rx_ring->cleaned += done;
  90         else
  91                 rx_ring->misses++;
  92
  93         mlx4_en_cq_unlock_poll(cq);
  94
  95         return done;
  96 }
  97 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  98
  99 #ifdef CONFIG_RFS_ACCEL
 100
 101 struct mlx4_en_filter {
 102         struct list_head next;
 103         struct work_struct work;
 104
 105         __be32 src_ip;
 106         __be32 dst_ip;
 107         __be16 src_port;
 108         __be16 dst_port;
 109
 110         int rxq_index;
 111         struct mlx4_en_priv *priv;
 112         u32 flow_id;                    /* RFS infrastructure id */
 113         int id;                         /* mlx4_en driver id */
 114         u64 reg_id;                     /* Flow steering API id */
 115         u8 activated;                   /* Used to prevent expiry before filter
 116                                          * is attached
 117                                          */
 118         struct hlist_node filter_chain;
 119 };
 120
 121 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 122
 123 static void mlx4_en_filter_work(struct work_struct *work)
 124 {
 125         struct mlx4_en_filter *filter = container_of(work,
 126                                                      struct mlx4_en_filter,
 127                                                      work);
 128         struct mlx4_en_priv *priv = filter->priv;
 129         struct mlx4_spec_list spec_tcp = {
 130                 .id = MLX4_NET_TRANS_RULE_ID_TCP,
 131                 {
 132                         .tcp_udp = {
 133                                 .dst_port = filter->dst_port,
 134                                 .dst_port_msk = (__force __be16)-1,
 135                                 .src_port = filter->src_port,
 136                                 .src_port_msk = (__force __be16)-1,
 137                         },
 138                 },
 139         };
 140         struct mlx4_spec_list spec_ip = {
 141                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 142                 {
 143                         .ipv4 = {
 144                                 .dst_ip = filter->dst_ip,
 145                                 .dst_ip_msk = (__force __be32)-1,
 146                                 .src_ip = filter->src_ip,
 147                                 .src_ip_msk = (__force __be32)-1,
 148                         },
 149                 },
 150         };
 151         struct mlx4_spec_list spec_eth = {
 152                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 153         };
 154         struct mlx4_net_trans_rule rule = {
 155                 .list = LIST_HEAD_INIT(rule.list),
 156                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 157                 .exclusive = 1,
 158                 .allow_loopback = 1,
 159                 .promisc_mode = MLX4_FS_REGULAR,
 160                 .port = priv->port,
 161                 .priority = MLX4_DOMAIN_RFS,
 162         };
 163         int rc;
 164         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 165
 166         list_add_tail(&spec_eth.list, &rule.list);
 167         list_add_tail(&spec_ip.list, &rule.list);
 168         list_add_tail(&spec_tcp.list, &rule.list);
 169
 170         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 171         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 172         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 173
 174         filter->activated = 0;
 175
 176         if (filter->reg_id) {
 177                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 178                 if (rc && rc != -ENOENT)
 179                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 180         }
 181
 182         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 183         if (rc)
 184                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 185
 186         mlx4_en_filter_rfs_expire(priv);
 187
 188         filter->activated = 1;
 189 }
 190
 191 static inline struct hlist_head *
 192 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 193                    __be16 src_port, __be16 dst_port)
 194 {
 195         unsigned long l;
 196         int bucket_idx;
 197
 198         l = (__force unsigned long)src_port |
 199             ((__force unsigned long)dst_port << 2);
 200         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 201
 202         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 203
 204         return &priv->filter_hash[bucket_idx];
 205 }
 206
 207 static struct mlx4_en_filter *
 208 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 209                      __be32 dst_ip, __be16 src_port, __be16 dst_port,
 210                      u32 flow_id)
 211 {
 212         struct mlx4_en_filter *filter = NULL;
 213
 214         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 215         if (!filter)
 216                 return NULL;
 217
 218         filter->priv = priv;
 219         filter->rxq_index = rxq_index;
 220         INIT_WORK(&filter->work, mlx4_en_filter_work);
 221
 222         filter->src_ip = src_ip;
 223         filter->dst_ip = dst_ip;
 224         filter->src_port = src_port;
 225         filter->dst_port = dst_port;
 226
 227         filter->flow_id = flow_id;
 228
 229         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 230
 231         list_add_tail(&filter->next, &priv->filters);
 232         hlist_add_head(&filter->filter_chain,
 233                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 234                                           dst_port));
 235
 236         return filter;
 237 }
 238
 239 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 240 {
 241         struct mlx4_en_priv *priv = filter->priv;
 242         int rc;
 243
 244         list_del(&filter->next);
 245
 246         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 247         if (rc && rc != -ENOENT)
 248                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 249
 250         kfree(filter);
 251 }
 252
 253 static inline struct mlx4_en_filter *
 254 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 255                     __be16 src_port, __be16 dst_port)
 256 {
 257         struct mlx4_en_filter *filter;
 258         struct mlx4_en_filter *ret = NULL;
 259
 260         hlist_for_each_entry(filter,
 261                              filter_hash_bucket(priv, src_ip, dst_ip,
 262                                                 src_port, dst_port),
 263                              filter_chain) {
 264                 if (filter->src_ip == src_ip &&
 265                     filter->dst_ip == dst_ip &&
 266                     filter->src_port == src_port &&
 267                     filter->dst_port == dst_port) {
 268                         ret = filter;
 269                         break;
 270                 }
 271         }
 272
 273         return ret;
 274 }
 275
 276 static int
 277 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 278                    u16 rxq_index, u32 flow_id)
 279 {
 280         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 281         struct mlx4_en_filter *filter;
 282         const struct iphdr *ip;
 283         const __be16 *ports;
 284         __be32 src_ip;
 285         __be32 dst_ip;
 286         __be16 src_port;
 287         __be16 dst_port;
 288         int nhoff = skb_network_offset(skb);
 289         int ret = 0;
 290
 291         if (skb->protocol != htons(ETH_P_IP))
 292                 return -EPROTONOSUPPORT;
 293
 294         ip = (const struct iphdr *)(skb->data + nhoff);
 295         if (ip_is_fragment(ip))
 296                 return -EPROTONOSUPPORT;
 297
 298         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 299
 300         src_ip = ip->saddr;
 301         dst_ip = ip->daddr;
 302         src_port = ports[0];
 303         dst_port = ports[1];
 304
 305         if (ip->protocol != IPPROTO_TCP)
 306                 return -EPROTONOSUPPORT;
 307
 308         spin_lock_bh(&priv->filters_lock);
 309         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, src_port, dst_port);
 310         if (filter) {
 311                 if (filter->rxq_index == rxq_index)
 312                         goto out;
 313
 314                 filter->rxq_index = rxq_index;
 315         } else {
 316                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 317                                               src_ip, dst_ip,
 318                                               src_port, dst_port, flow_id);
 319                 if (!filter) {
 320                         ret = -ENOMEM;
 321                         goto err;
 322                 }
 323         }
 324
 325         queue_work(priv->mdev->workqueue, &filter->work);
 326
 327 out:
 328         ret = filter->id;
 329 err:
 330         spin_unlock_bh(&priv->filters_lock);
 331
 332         return ret;
 333 }
 334
 335 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv,
 336                              struct mlx4_en_rx_ring *rx_ring)
 337 {
 338         struct mlx4_en_filter *filter, *tmp;
 339         LIST_HEAD(del_list);
 340
 341         spin_lock_bh(&priv->filters_lock);
 342         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 343                 list_move(&filter->next, &del_list);
 344                 hlist_del(&filter->filter_chain);
 345         }
 346         spin_unlock_bh(&priv->filters_lock);
 347
 348         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 349                 cancel_work_sync(&filter->work);
 350                 mlx4_en_filter_free(filter);
 351         }
 352 }
 353
 354 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 355 {
 356         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 357         LIST_HEAD(del_list);
 358         int i = 0;
 359
 360         spin_lock_bh(&priv->filters_lock);
 361         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 362                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 363                         break;
 364
 365                 if (filter->activated &&
 366                     !work_pending(&filter->work) &&
 367                     rps_may_expire_flow(priv->dev,
 368                                         filter->rxq_index, filter->flow_id,
 369                                         filter->id)) {
 370                         list_move(&filter->next, &del_list);
 371                         hlist_del(&filter->filter_chain);
 372                 } else
 373                         last_filter = filter;
 374
 375                 i++;
 376         }
 377
 378         if (last_filter && (&last_filter->next != priv->filters.next))
 379                 list_move(&priv->filters, &last_filter->next);
 380
 381         spin_unlock_bh(&priv->filters_lock);
 382
 383         list_for_each_entry_safe(filter, tmp, &del_list, next)
 384                 mlx4_en_filter_free(filter);
 385 }
 386 #endif
 387
 388 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 389                                    __be16 proto, u16 vid)
 390 {
 391         struct mlx4_en_priv *priv = netdev_priv(dev);
 392         struct mlx4_en_dev *mdev = priv->mdev;
 393         int err;
 394         int idx;
 395
 396         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 397
 398         set_bit(vid, priv->active_vlans);
 399
 400         /* Add VID to port VLAN filter */
 401         mutex_lock(&mdev->state_lock);
 402         if (mdev->device_up && priv->port_up) {
 403                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 404                 if (err)
 405                         en_err(priv, "Failed configuring VLAN filter\n");
 406         }
 407         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 408                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 409         mutex_unlock(&mdev->state_lock);
 410
 411         return 0;
 412 }
 413
 414 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 415                                     __be16 proto, u16 vid)
 416 {
 417         struct mlx4_en_priv *priv = netdev_priv(dev);
 418         struct mlx4_en_dev *mdev = priv->mdev;
 419         int err;
 420         int idx;
 421
 422         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 423
 424         clear_bit(vid, priv->active_vlans);
 425
 426         /* Remove VID from port VLAN filter */
 427         mutex_lock(&mdev->state_lock);
 428         if (!mlx4_find_cached_vlan(mdev->dev, priv->port, vid, &idx))
 429                 mlx4_unregister_vlan(mdev->dev, priv->port, idx);
 430         else
 431                 en_dbg(HW, priv, "could not find vid %d in cache\n", vid);
 432
 433         if (mdev->device_up && priv->port_up) {
 434                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 435                 if (err)
 436                         en_err(priv, "Failed configuring VLAN filter\n");
 437         }
 438         mutex_unlock(&mdev->state_lock);
 439
 440         return 0;
 441 }
 442
 443 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 444 {
 445         int i;
 446         for (i = ETH_ALEN - 1; i >= 0; --i) {
 447                 dst_mac[i] = src_mac & 0xff;
 448                 src_mac >>= 8;
 449         }
 450         memset(&dst_mac[ETH_ALEN], 0, 2);
 451 }
 452
 453 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 454                                 unsigned char *mac, int *qpn, u64 *reg_id)
 455 {
 456         struct mlx4_en_dev *mdev = priv->mdev;
 457         struct mlx4_dev *dev = mdev->dev;
 458         int err;
 459
 460         switch (dev->caps.steering_mode) {
 461         case MLX4_STEERING_MODE_B0: {
 462                 struct mlx4_qp qp;
 463                 u8 gid[16] = {0};
 464
 465                 qp.qpn = *qpn;
 466                 memcpy(&gid[10], mac, ETH_ALEN);
 467                 gid[5] = priv->port;
 468
 469                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 470                 break;
 471         }
 472         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 473                 struct mlx4_spec_list spec_eth = { {NULL} };
 474                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 475
 476                 struct mlx4_net_trans_rule rule = {
 477                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 478                         .exclusive = 0,
 479                         .allow_loopback = 1,
 480                         .promisc_mode = MLX4_FS_REGULAR,
 481                         .priority = MLX4_DOMAIN_NIC,
 482                 };
 483
 484                 rule.port = priv->port;
 485                 rule.qpn = *qpn;
 486                 INIT_LIST_HEAD(&rule.list);
 487
 488                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 489                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 490                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 491                 list_add_tail(&spec_eth.list, &rule.list);
 492
 493                 err = mlx4_flow_attach(dev, &rule, reg_id);
 494                 break;
 495         }
 496         default:
 497                 return -EINVAL;
 498         }
 499         if (err)
 500                 en_warn(priv, "Failed Attaching Unicast\n");
 501
 502         return err;
 503 }
 504
 505 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 506                                      unsigned char *mac, int qpn, u64 reg_id)
 507 {
 508         struct mlx4_en_dev *mdev = priv->mdev;
 509         struct mlx4_dev *dev = mdev->dev;
 510
 511         switch (dev->caps.steering_mode) {
 512         case MLX4_STEERING_MODE_B0: {
 513                 struct mlx4_qp qp;
 514                 u8 gid[16] = {0};
 515
 516                 qp.qpn = qpn;
 517                 memcpy(&gid[10], mac, ETH_ALEN);
 518                 gid[5] = priv->port;
 519
 520                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 521                 break;
 522         }
 523         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 524                 mlx4_flow_detach(dev, reg_id);
 525                 break;
 526         }
 527         default:
 528                 en_err(priv, "Invalid steering mode.\n");
 529         }
 530 }
 531
 532 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 533 {
 534         struct mlx4_en_dev *mdev = priv->mdev;
 535         struct mlx4_dev *dev = mdev->dev;
 536         struct mlx4_mac_entry *entry;
 537         int index = 0;
 538         int err = 0;
 539         u64 reg_id;
 540         int *qpn = &priv->base_qpn;
 541         u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 542
 543         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 544                priv->dev->dev_addr);
 545         index = mlx4_register_mac(dev, priv->port, mac);
 546         if (index < 0) {
 547                 err = index;
 548                 en_err(priv, "Failed adding MAC: %pM\n",
 549                        priv->dev->dev_addr);
 550                 return err;
 551         }
 552
 553         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 554                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 555                 *qpn = base_qpn + index;
 556                 return 0;
 557         }
 558
 559         err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
 560         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 561         if (err) {
 562                 en_err(priv, "Failed to reserve qp for mac registration\n");
 563                 goto qp_err;
 564         }
 565
 566         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
 567         if (err)
 568                 goto steer_err;
 569
 570         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 571         if (!entry) {
 572                 err = -ENOMEM;
 573                 goto alloc_err;
 574         }
 575         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
 576         entry->reg_id = reg_id;
 577
 578         hlist_add_head_rcu(&entry->hlist,
 579                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 580
 581         return 0;
 582
 583 alloc_err:
 584         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
 585
 586 steer_err:
 587         mlx4_qp_release_range(dev, *qpn, 1);
 588
 589 qp_err:
 590         mlx4_unregister_mac(dev, priv->port, mac);
 591         return err;
 592 }
 593
 594 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 595 {
 596         struct mlx4_en_dev *mdev = priv->mdev;
 597         struct mlx4_dev *dev = mdev->dev;
 598         int qpn = priv->base_qpn;
 599         u64 mac;
 600
 601         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 602                 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr);
 603                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 604                        priv->dev->dev_addr);
 605                 mlx4_unregister_mac(dev, priv->port, mac);
 606         } else {
 607                 struct mlx4_mac_entry *entry;
 608                 struct hlist_node *tmp;
 609                 struct hlist_head *bucket;
 610                 unsigned int i;
 611
 612                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 613                         bucket = &priv->mac_hash[i];
 614                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 615                                 mac = mlx4_en_mac_to_u64(entry->mac);
 616                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 617                                        entry->mac);
 618                                 mlx4_en_uc_steer_release(priv, entry->mac,
 619                                                          qpn, entry->reg_id);
 620
 621                                 mlx4_unregister_mac(dev, priv->port, mac);
 622                                 hlist_del_rcu(&entry->hlist);
 623                                 kfree_rcu(entry, rcu);
 624                         }
 625                 }
 626
 627                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 628                        priv->port, qpn);
 629                 mlx4_qp_release_range(dev, qpn, 1);
 630                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 631         }
 632 }
 633
 634 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 635                                unsigned char *new_mac, unsigned char *prev_mac)
 636 {
 637         struct mlx4_en_dev *mdev = priv->mdev;
 638         struct mlx4_dev *dev = mdev->dev;
 639         int err = 0;
 640         u64 new_mac_u64 = mlx4_en_mac_to_u64(new_mac);
 641
 642         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 643                 struct hlist_head *bucket;
 644                 unsigned int mac_hash;
 645                 struct mlx4_mac_entry *entry;
 646                 struct hlist_node *tmp;
 647                 u64 prev_mac_u64 = mlx4_en_mac_to_u64(prev_mac);
 648
 649                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 650                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 651                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 652                                 mlx4_en_uc_steer_release(priv, entry->mac,
 653                                                          qpn, entry->reg_id);
 654                                 mlx4_unregister_mac(dev, priv->port,
 655                                                     prev_mac_u64);
 656                                 hlist_del_rcu(&entry->hlist);
 657                                 synchronize_rcu();
 658                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 659                                 entry->reg_id = 0;
 660                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 661                                 hlist_add_head_rcu(&entry->hlist,
 662                                                    &priv->mac_hash[mac_hash]);
 663                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 664                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 665                                                            &qpn,
 666                                                            &entry->reg_id);
 667                                 return err;
 668                         }
 669                 }
 670                 return -EINVAL;
 671         }
 672
 673         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 674 }
 675
 676 u64 mlx4_en_mac_to_u64(u8 *addr)
 677 {
 678         u64 mac = 0;
 679         int i;
 680
 681         for (i = 0; i < ETH_ALEN; i++) {
 682                 mac <<= 8;
 683                 mac |= addr[i];
 684         }
 685         return mac;
 686 }
 687
 688 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
 689 {
 690         int err = 0;
 691
 692         if (priv->port_up) {
 693                 /* Remove old MAC and insert the new one */
 694                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 695                                           priv->dev->dev_addr, priv->prev_mac);
 696                 if (err)
 697                         en_err(priv, "Failed changing HW MAC address\n");
 698                 memcpy(priv->prev_mac, priv->dev->dev_addr,
 699                        sizeof(priv->prev_mac));
 700         } else
 701                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 702
 703         return err;
 704 }
 705
 706 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 707 {
 708         struct mlx4_en_priv *priv = netdev_priv(dev);
 709         struct mlx4_en_dev *mdev = priv->mdev;
 710         struct sockaddr *saddr = addr;
 711         int err;
 712
 713         if (!is_valid_ether_addr(saddr->sa_data))
 714                 return -EADDRNOTAVAIL;
 715
 716         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 717
 718         mutex_lock(&mdev->state_lock);
 719         err = mlx4_en_do_set_mac(priv);
 720         mutex_unlock(&mdev->state_lock);
 721
 722         return err;
 723 }
 724
 725 static void mlx4_en_clear_list(struct net_device *dev)
 726 {
 727         struct mlx4_en_priv *priv = netdev_priv(dev);
 728         struct mlx4_en_mc_list *tmp, *mc_to_del;
 729
 730         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 731                 list_del(&mc_to_del->list);
 732                 kfree(mc_to_del);
 733         }
 734 }
 735
 736 static void mlx4_en_cache_mclist(struct net_device *dev)
 737 {
 738         struct mlx4_en_priv *priv = netdev_priv(dev);
 739         struct netdev_hw_addr *ha;
 740         struct mlx4_en_mc_list *tmp;
 741
 742         mlx4_en_clear_list(dev);
 743         netdev_for_each_mc_addr(ha, dev) {
 744                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 745                 if (!tmp) {
 746                         mlx4_en_clear_list(dev);
 747                         return;
 748                 }
 749                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 750                 list_add_tail(&tmp->list, &priv->mc_list);
 751         }
 752 }
 753
 754 static void update_mclist_flags(struct mlx4_en_priv *priv,
 755                                 struct list_head *dst,
 756                                 struct list_head *src)
 757 {
 758         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 759         bool found;
 760
 761         /* Find all the entries that should be removed from dst,
 762          * These are the entries that are not found in src
 763          */
 764         list_for_each_entry(dst_tmp, dst, list) {
 765                 found = false;
 766                 list_for_each_entry(src_tmp, src, list) {
 767                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 768                                 found = true;
 769                                 break;
 770                         }
 771                 }
 772                 if (!found)
 773                         dst_tmp->action = MCLIST_REM;
 774         }
 775
 776         /* Add entries that exist in src but not in dst
 777          * mark them as need to add
 778          */
 779         list_for_each_entry(src_tmp, src, list) {
 780                 found = false;
 781                 list_for_each_entry(dst_tmp, dst, list) {
 782                         if (!memcmp(dst_tmp->addr, src_tmp->addr, ETH_ALEN)) {
 783                                 dst_tmp->action = MCLIST_NONE;
 784                                 found = true;
 785                                 break;
 786                         }
 787                 }
 788                 if (!found) {
 789                         new_mc = kmemdup(src_tmp,
 790                                          sizeof(struct mlx4_en_mc_list),
 791                                          GFP_KERNEL);
 792                         if (!new_mc)
 793                                 return;
 794
 795                         new_mc->action = MCLIST_ADD;
 796                         list_add_tail(&new_mc->list, dst);
 797                 }
 798         }
 799 }
 800
 801 static void mlx4_en_set_rx_mode(struct net_device *dev)
 802 {
 803         struct mlx4_en_priv *priv = netdev_priv(dev);
 804
 805         if (!priv->port_up)
 806                 return;
 807
 808         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 809 }
 810
 811 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 812                                      struct mlx4_en_dev *mdev)
 813 {
 814         int err = 0;
 815
 816         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 817                 if (netif_msg_rx_status(priv))
 818                         en_warn(priv, "Entering promiscuous mode\n");
 819                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 820
 821                 /* Enable promiscouos mode */
 822                 switch (mdev->dev->caps.steering_mode) {
 823                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 824                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 825                                                           priv->port,
 826                                                           priv->base_qpn,
 827                                                           MLX4_FS_ALL_DEFAULT);
 828                         if (err)
 829                                 en_err(priv, "Failed enabling promiscuous mode\n");
 830                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 831                         break;
 832
 833                 case MLX4_STEERING_MODE_B0:
 834                         err = mlx4_unicast_promisc_add(mdev->dev,
 835                                                        priv->base_qpn,
 836                                                        priv->port);
 837                         if (err)
 838                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 839
 840                         /* Add the default qp number as multicast
 841                          * promisc
 842                          */
 843                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 844                                 err = mlx4_multicast_promisc_add(mdev->dev,
 845                                                                  priv->base_qpn,
 846                                                                  priv->port);
 847                                 if (err)
 848                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 849                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 850                         }
 851                         break;
 852
 853                 case MLX4_STEERING_MODE_A0:
 854                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 855                                                      priv->port,
 856                                                      priv->base_qpn,
 857                                                      1);
 858                         if (err)
 859                                 en_err(priv, "Failed enabling promiscuous mode\n");
 860                         break;
 861                 }
 862
 863                 /* Disable port multicast filter (unconditionally) */
 864                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 865                                           0, MLX4_MCAST_DISABLE);
 866                 if (err)
 867                         en_err(priv, "Failed disabling multicast filter\n");
 868
 869                 /* Disable port VLAN filter */
 870                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 871                 if (err)
 872                         en_err(priv, "Failed disabling VLAN filter\n");
 873         }
 874 }
 875
 876 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 877                                        struct mlx4_en_dev *mdev)
 878 {
 879         int err = 0;
 880
 881         if (netif_msg_rx_status(priv))
 882                 en_warn(priv, "Leaving promiscuous mode\n");
 883         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 884
 885         /* Disable promiscouos mode */
 886         switch (mdev->dev->caps.steering_mode) {
 887         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 888                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 889                                                      priv->port,
 890                                                      MLX4_FS_ALL_DEFAULT);
 891                 if (err)
 892                         en_err(priv, "Failed disabling promiscuous mode\n");
 893                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 894                 break;
 895
 896         case MLX4_STEERING_MODE_B0:
 897                 err = mlx4_unicast_promisc_remove(mdev->dev,
 898                                                   priv->base_qpn,
 899                                                   priv->port);
 900                 if (err)
 901                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 902                 /* Disable Multicast promisc */
 903                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 904                         err = mlx4_multicast_promisc_remove(mdev->dev,
 905                                                             priv->base_qpn,
 906                                                             priv->port);
 907                         if (err)
 908                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 909                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 910                 }
 911                 break;
 912
 913         case MLX4_STEERING_MODE_A0:
 914                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 915                                              priv->port,
 916                                              priv->base_qpn, 0);
 917                 if (err)
 918                         en_err(priv, "Failed disabling promiscuous mode\n");
 919                 break;
 920         }
 921
 922         /* Enable port VLAN filter */
 923         err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 924         if (err)
 925                 en_err(priv, "Failed enabling VLAN filter\n");
 926 }
 927
 928 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 929                                  struct net_device *dev,
 930                                  struct mlx4_en_dev *mdev)
 931 {
 932         struct mlx4_en_mc_list *mclist, *tmp;
 933         u64 mcast_addr = 0;
 934         u8 mc_list[16] = {0};
 935         int err = 0;
 936
 937         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 938         if (dev->flags & IFF_ALLMULTI) {
 939                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 940                                           0, MLX4_MCAST_DISABLE);
 941                 if (err)
 942                         en_err(priv, "Failed disabling multicast filter\n");
 943
 944                 /* Add the default qp number as multicast promisc */
 945                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 946                         switch (mdev->dev->caps.steering_mode) {
 947                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 948                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 949                                                                   priv->port,
 950                                                                   priv->base_qpn,
 951                                                                   MLX4_FS_MC_DEFAULT);
 952                                 break;
 953
 954                         case MLX4_STEERING_MODE_B0:
 955                                 err = mlx4_multicast_promisc_add(mdev->dev,
 956                                                                  priv->base_qpn,
 957                                                                  priv->port);
 958                                 break;
 959
 960                         case MLX4_STEERING_MODE_A0:
 961                                 break;
 962                         }
 963                         if (err)
 964                                 en_err(priv, "Failed entering multicast promisc mode\n");
 965                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 966                 }
 967         } else {
 968                 /* Disable Multicast promisc */
 969                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 970                         switch (mdev->dev->caps.steering_mode) {
 971                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 972                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 973                                                                      priv->port,
 974                                                                      MLX4_FS_MC_DEFAULT);
 975                                 break;
 976
 977                         case MLX4_STEERING_MODE_B0:
 978                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 979                                                                     priv->base_qpn,
 980                                                                     priv->port);
 981                                 break;
 982
 983                         case MLX4_STEERING_MODE_A0:
 984                                 break;
 985                         }
 986                         if (err)
 987                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 988                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 989                 }
 990
 991                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 992                                           0, MLX4_MCAST_DISABLE);
 993                 if (err)
 994                         en_err(priv, "Failed disabling multicast filter\n");
 995
 996                 /* Flush mcast filter and init it with broadcast address */
 997                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 998                                     1, MLX4_MCAST_CONFIG);
 999
1000                 /* Update multicast list - we cache all addresses so they won't
1001                  * change while HW is updated holding the command semaphor */
1002                 netif_addr_lock_bh(dev);
1003                 mlx4_en_cache_mclist(dev);
1004                 netif_addr_unlock_bh(dev);
1005                 list_for_each_entry(mclist, &priv->mc_list, list) {
1006                         mcast_addr = mlx4_en_mac_to_u64(mclist->addr);
1007                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1008                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1009                 }
1010                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1011                                           0, MLX4_MCAST_ENABLE);
1012                 if (err)
1013                         en_err(priv, "Failed enabling multicast filter\n");
1014
1015                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1016                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1017                         if (mclist->action == MCLIST_REM) {
1018                                 /* detach this address and delete from list */
1019                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1020                                 mc_list[5] = priv->port;
1021                                 err = mlx4_multicast_detach(mdev->dev,
1022                                                             &priv->rss_map.indir_qp,
1023                                                             mc_list,
1024                                                             MLX4_PROT_ETH,
1025                                                             mclist->reg_id);
1026                                 if (err)
1027                                         en_err(priv, "Fail to detach multicast address\n");
1028
1029                                 /* remove from list */
1030                                 list_del(&mclist->list);
1031                                 kfree(mclist);
1032                         } else if (mclist->action == MCLIST_ADD) {
1033                                 /* attach the address */
1034                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1035                                 /* needed for B0 steering support */
1036                                 mc_list[5] = priv->port;
1037                                 err = mlx4_multicast_attach(mdev->dev,
1038                                                             &priv->rss_map.indir_qp,
1039                                                             mc_list,
1040                                                             priv->port, 0,
1041                                                             MLX4_PROT_ETH,
1042                                                             &mclist->reg_id);
1043                                 if (err)
1044                                         en_err(priv, "Fail to attach multicast address\n");
1045
1046                         }
1047                 }
1048         }
1049 }
1050
1051 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1052                                  struct net_device *dev,
1053                                  struct mlx4_en_dev *mdev)
1054 {
1055         struct netdev_hw_addr *ha;
1056         struct mlx4_mac_entry *entry;
1057         struct hlist_node *tmp;
1058         bool found;
1059         u64 mac;
1060         int err = 0;
1061         struct hlist_head *bucket;
1062         unsigned int i;
1063         int removed = 0;
1064         u32 prev_flags;
1065
1066         /* Note that we do not need to protect our mac_hash traversal with rcu,
1067          * since all modification code is protected by mdev->state_lock
1068          */
1069
1070         /* find what to remove */
1071         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1072                 bucket = &priv->mac_hash[i];
1073                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1074                         found = false;
1075                         netdev_for_each_uc_addr(ha, dev) {
1076                                 if (ether_addr_equal_64bits(entry->mac,
1077                                                             ha->addr)) {
1078                                         found = true;
1079                                         break;
1080                                 }
1081                         }
1082
1083                         /* MAC address of the port is not in uc list */
1084                         if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1085                                 found = true;
1086
1087                         if (!found) {
1088                                 mac = mlx4_en_mac_to_u64(entry->mac);
1089                                 mlx4_en_uc_steer_release(priv, entry->mac,
1090                                                          priv->base_qpn,
1091                                                          entry->reg_id);
1092                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1093
1094                                 hlist_del_rcu(&entry->hlist);
1095                                 kfree_rcu(entry, rcu);
1096                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1097                                        entry->mac, priv->port);
1098                                 ++removed;
1099                         }
1100                 }
1101         }
1102
1103         /* if we didn't remove anything, there is no use in trying to add
1104          * again once we are in a forced promisc mode state
1105          */
1106         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1107                 return;
1108
1109         prev_flags = priv->flags;
1110         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1111
1112         /* find what to add */
1113         netdev_for_each_uc_addr(ha, dev) {
1114                 found = false;
1115                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1116                 hlist_for_each_entry(entry, bucket, hlist) {
1117                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1118                                 found = true;
1119                                 break;
1120                         }
1121                 }
1122
1123                 if (!found) {
1124                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1125                         if (!entry) {
1126                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1127                                        ha->addr, priv->port);
1128                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1129                                 break;
1130                         }
1131                         mac = mlx4_en_mac_to_u64(ha->addr);
1132                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1133                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1134                         if (err < 0) {
1135                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1136                                        ha->addr, priv->port, err);
1137                                 kfree(entry);
1138                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1139                                 break;
1140                         }
1141                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1142                                                    &priv->base_qpn,
1143                                                    &entry->reg_id);
1144                         if (err) {
1145                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1146                                        ha->addr, priv->port, err);
1147                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1148                                 kfree(entry);
1149                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1150                                 break;
1151                         } else {
1152                                 unsigned int mac_hash;
1153                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1154                                        ha->addr, priv->port);
1155                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1156                                 bucket = &priv->mac_hash[mac_hash];
1157                                 hlist_add_head_rcu(&entry->hlist, bucket);
1158                         }
1159                 }
1160         }
1161
1162         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1163                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1164                         priv->port);
1165         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1166                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1167                         priv->port);
1168         }
1169 }
1170
1171 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1172 {
1173         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1174                                                  rx_mode_task);
1175         struct mlx4_en_dev *mdev = priv->mdev;
1176         struct net_device *dev = priv->dev;
1177
1178         mutex_lock(&mdev->state_lock);
1179         if (!mdev->device_up) {
1180                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1181                 goto out;
1182         }
1183         if (!priv->port_up) {
1184                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1185                 goto out;
1186         }
1187
1188         if (!netif_carrier_ok(dev)) {
1189                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1190                         if (priv->port_state.link_state) {
1191                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1192                                 netif_carrier_on(dev);
1193                                 en_dbg(LINK, priv, "Link Up\n");
1194                         }
1195                 }
1196         }
1197
1198         if (dev->priv_flags & IFF_UNICAST_FLT)
1199                 mlx4_en_do_uc_filter(priv, dev, mdev);
1200
1201         /* Promsicuous mode: disable all filters */
1202         if ((dev->flags & IFF_PROMISC) ||
1203             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1204                 mlx4_en_set_promisc_mode(priv, mdev);
1205                 goto out;
1206         }
1207
1208         /* Not in promiscuous mode */
1209         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1210                 mlx4_en_clear_promisc_mode(priv, mdev);
1211
1212         mlx4_en_do_multicast(priv, dev, mdev);
1213 out:
1214         mutex_unlock(&mdev->state_lock);
1215 }
1216
1217 #ifdef CONFIG_NET_POLL_CONTROLLER
1218 static void mlx4_en_netpoll(struct net_device *dev)
1219 {
1220         struct mlx4_en_priv *priv = netdev_priv(dev);
1221         struct mlx4_en_cq *cq;
1222         unsigned long flags;
1223         int i;
1224
1225         for (i = 0; i < priv->rx_ring_num; i++) {
1226                 cq = &priv->rx_cq[i];
1227                 spin_lock_irqsave(&cq->lock, flags);
1228                 napi_synchronize(&cq->napi);
1229                 mlx4_en_process_rx_cq(dev, cq, 0);
1230                 spin_unlock_irqrestore(&cq->lock, flags);
1231         }
1232 }
1233 #endif
1234
1235 static void mlx4_en_tx_timeout(struct net_device *dev)
1236 {
1237         struct mlx4_en_priv *priv = netdev_priv(dev);
1238         struct mlx4_en_dev *mdev = priv->mdev;
1239         int i;
1240
1241         if (netif_msg_timer(priv))
1242                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1243
1244         for (i = 0; i < priv->tx_ring_num; i++) {
1245                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1246                         continue;
1247                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1248                         i, priv->tx_ring[i].qpn, priv->tx_ring[i].cqn,
1249                         priv->tx_ring[i].cons, priv->tx_ring[i].prod);
1250         }
1251
1252         priv->port_stats.tx_timeout++;
1253         en_dbg(DRV, priv, "Scheduling watchdog\n");
1254         queue_work(mdev->workqueue, &priv->watchdog_task);
1255 }
1256
1257
1258 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1259 {
1260         struct mlx4_en_priv *priv = netdev_priv(dev);
1261
1262         spin_lock_bh(&priv->stats_lock);
1263         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1264         spin_unlock_bh(&priv->stats_lock);
1265
1266         return &priv->ret_stats;
1267 }
1268
1269 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1270 {
1271         struct mlx4_en_cq *cq;
1272         int i;
1273
1274         /* If we haven't received a specific coalescing setting
1275          * (module param), we set the moderation parameters as follows:
1276          * - moder_cnt is set to the number of mtu sized packets to
1277          *   satisfy our coalescing target.
1278          * - moder_time is set to a fixed value.
1279          */
1280         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1281         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1282         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1283         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1284         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1285                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1286
1287         /* Setup cq moderation params */
1288         for (i = 0; i < priv->rx_ring_num; i++) {
1289                 cq = &priv->rx_cq[i];
1290                 cq->moder_cnt = priv->rx_frames;
1291                 cq->moder_time = priv->rx_usecs;
1292                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1293                 priv->last_moder_packets[i] = 0;
1294                 priv->last_moder_bytes[i] = 0;
1295         }
1296
1297         for (i = 0; i < priv->tx_ring_num; i++) {
1298                 cq = &priv->tx_cq[i];
1299                 cq->moder_cnt = priv->tx_frames;
1300                 cq->moder_time = priv->tx_usecs;
1301         }
1302
1303         /* Reset auto-moderation params */
1304         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1305         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1306         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1307         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1308         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1309         priv->adaptive_rx_coal = 1;
1310         priv->last_moder_jiffies = 0;
1311         priv->last_moder_tx_packets = 0;
1312 }
1313
1314 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1315 {
1316         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1317         struct mlx4_en_cq *cq;
1318         unsigned long packets;
1319         unsigned long rate;
1320         unsigned long avg_pkt_size;
1321         unsigned long rx_packets;
1322         unsigned long rx_bytes;
1323         unsigned long rx_pkt_diff;
1324         int moder_time;
1325         int ring, err;
1326
1327         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1328                 return;
1329
1330         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1331                 spin_lock_bh(&priv->stats_lock);
1332                 rx_packets = priv->rx_ring[ring].packets;
1333                 rx_bytes = priv->rx_ring[ring].bytes;
1334                 spin_unlock_bh(&priv->stats_lock);
1335
1336                 rx_pkt_diff = ((unsigned long) (rx_packets -
1337                                 priv->last_moder_packets[ring]));
1338                 packets = rx_pkt_diff;
1339                 rate = packets * HZ / period;
1340                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1341                                 priv->last_moder_bytes[ring])) / packets : 0;
1342
1343                 /* Apply auto-moderation only when packet rate
1344                  * exceeds a rate that it matters */
1345                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1346                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1347                         if (rate < priv->pkt_rate_low)
1348                                 moder_time = priv->rx_usecs_low;
1349                         else if (rate > priv->pkt_rate_high)
1350                                 moder_time = priv->rx_usecs_high;
1351                         else
1352                                 moder_time = (rate - priv->pkt_rate_low) *
1353                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1354                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1355                                         priv->rx_usecs_low;
1356                 } else {
1357                         moder_time = priv->rx_usecs_low;
1358                 }
1359
1360                 if (moder_time != priv->last_moder_time[ring]) {
1361                         priv->last_moder_time[ring] = moder_time;
1362                         cq = &priv->rx_cq[ring];
1363                         cq->moder_time = moder_time;
1364                         cq->moder_cnt = priv->rx_frames;
1365                         err = mlx4_en_set_cq_moder(priv, cq);
1366                         if (err)
1367                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1368                                        ring);
1369                 }
1370                 priv->last_moder_packets[ring] = rx_packets;
1371                 priv->last_moder_bytes[ring] = rx_bytes;
1372         }
1373
1374         priv->last_moder_jiffies = jiffies;
1375 }
1376
1377 static void mlx4_en_do_get_stats(struct work_struct *work)
1378 {
1379         struct delayed_work *delay = to_delayed_work(work);
1380         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1381                                                  stats_task);
1382         struct mlx4_en_dev *mdev = priv->mdev;
1383         int err;
1384
1385         mutex_lock(&mdev->state_lock);
1386         if (mdev->device_up) {
1387                 if (priv->port_up) {
1388                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1389                         if (err)
1390                                 en_dbg(HW, priv, "Could not update stats\n");
1391
1392                         mlx4_en_auto_moderation(priv);
1393                 }
1394
1395                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1396         }
1397         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1398                 mlx4_en_do_set_mac(priv);
1399                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1400         }
1401         mutex_unlock(&mdev->state_lock);
1402 }
1403
1404 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1405  * periodically
1406  */
1407 static void mlx4_en_service_task(struct work_struct *work)
1408 {
1409         struct delayed_work *delay = to_delayed_work(work);
1410         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1411                                                  service_task);
1412         struct mlx4_en_dev *mdev = priv->mdev;
1413
1414         mutex_lock(&mdev->state_lock);
1415         if (mdev->device_up) {
1416                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1417                         mlx4_en_ptp_overflow_check(mdev);
1418
1419                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1420                                    SERVICE_TASK_DELAY);
1421         }
1422         mutex_unlock(&mdev->state_lock);
1423 }
1424
1425 static void mlx4_en_linkstate(struct work_struct *work)
1426 {
1427         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1428                                                  linkstate_task);
1429         struct mlx4_en_dev *mdev = priv->mdev;
1430         int linkstate = priv->link_state;
1431
1432         mutex_lock(&mdev->state_lock);
1433         /* If observable port state changed set carrier state and
1434          * report to system log */
1435         if (priv->last_link_state != linkstate) {
1436                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1437                         en_info(priv, "Link Down\n");
1438                         netif_carrier_off(priv->dev);
1439                 } else {
1440                         en_info(priv, "Link Up\n");
1441                         netif_carrier_on(priv->dev);
1442                 }
1443         }
1444         priv->last_link_state = linkstate;
1445         mutex_unlock(&mdev->state_lock);
1446 }
1447
1448
1449 int mlx4_en_start_port(struct net_device *dev)
1450 {
1451         struct mlx4_en_priv *priv = netdev_priv(dev);
1452         struct mlx4_en_dev *mdev = priv->mdev;
1453         struct mlx4_en_cq *cq;
1454         struct mlx4_en_tx_ring *tx_ring;
1455         int rx_index = 0;
1456         int tx_index = 0;
1457         int err = 0;
1458         int i;
1459         int j;
1460         u8 mc_list[16] = {0};
1461
1462         if (priv->port_up) {
1463                 en_dbg(DRV, priv, "start port called while port already up\n");
1464                 return 0;
1465         }
1466
1467         INIT_LIST_HEAD(&priv->mc_list);
1468         INIT_LIST_HEAD(&priv->curr_list);
1469         INIT_LIST_HEAD(&priv->ethtool_list);
1470         memset(&priv->ethtool_rules[0], 0,
1471                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1472
1473         /* Calculate Rx buf size */
1474         dev->mtu = min(dev->mtu, priv->max_mtu);
1475         mlx4_en_calc_rx_buf(dev);
1476         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1477
1478         /* Configure rx cq's and rings */
1479         err = mlx4_en_activate_rx_rings(priv);
1480         if (err) {
1481                 en_err(priv, "Failed to activate RX rings\n");
1482                 return err;
1483         }
1484         for (i = 0; i < priv->rx_ring_num; i++) {
1485                 cq = &priv->rx_cq[i];
1486
1487                 mlx4_en_cq_init_lock(cq);
1488
1489                 err = mlx4_en_activate_cq(priv, cq, i);
1490                 if (err) {
1491                         en_err(priv, "Failed activating Rx CQ\n");
1492                         goto cq_err;
1493                 }
1494                 for (j = 0; j < cq->size; j++)
1495                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1496                 err = mlx4_en_set_cq_moder(priv, cq);
1497                 if (err) {
1498                         en_err(priv, "Failed setting cq moderation parameters");
1499                         mlx4_en_deactivate_cq(priv, cq);
1500                         goto cq_err;
1501                 }
1502                 mlx4_en_arm_cq(priv, cq);
1503                 priv->rx_ring[i].cqn = cq->mcq.cqn;
1504                 ++rx_index;
1505         }
1506
1507         /* Set qp number */
1508         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1509         err = mlx4_en_get_qp(priv);
1510         if (err) {
1511                 en_err(priv, "Failed getting eth qp\n");
1512                 goto cq_err;
1513         }
1514         mdev->mac_removed[priv->port] = 0;
1515
1516         err = mlx4_en_config_rss_steer(priv);
1517         if (err) {
1518                 en_err(priv, "Failed configuring rss steering\n");
1519                 goto mac_err;
1520         }
1521
1522         err = mlx4_en_create_drop_qp(priv);
1523         if (err)
1524                 goto rss_err;
1525
1526         /* Configure tx cq's and rings */
1527         for (i = 0; i < priv->tx_ring_num; i++) {
1528                 /* Configure cq */
1529                 cq = &priv->tx_cq[i];
1530                 err = mlx4_en_activate_cq(priv, cq, i);
1531                 if (err) {
1532                         en_err(priv, "Failed allocating Tx CQ\n");
1533                         goto tx_err;
1534                 }
1535                 err = mlx4_en_set_cq_moder(priv, cq);
1536                 if (err) {
1537                         en_err(priv, "Failed setting cq moderation parameters");
1538                         mlx4_en_deactivate_cq(priv, cq);
1539                         goto tx_err;
1540                 }
1541                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1542                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1543
1544                 /* Configure ring */
1545                 tx_ring = &priv->tx_ring[i];
1546                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1547                         i / priv->num_tx_rings_p_up);
1548                 if (err) {
1549                         en_err(priv, "Failed allocating Tx ring\n");
1550                         mlx4_en_deactivate_cq(priv, cq);
1551                         goto tx_err;
1552                 }
1553                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1554
1555                 /* Arm CQ for TX completions */
1556                 mlx4_en_arm_cq(priv, cq);
1557
1558                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1559                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1560                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1561                 ++tx_index;
1562         }
1563
1564         /* Configure port */
1565         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1566                                     priv->rx_skb_size + ETH_FCS_LEN,
1567                                     priv->prof->tx_pause,
1568                                     priv->prof->tx_ppp,
1569                                     priv->prof->rx_pause,
1570                                     priv->prof->rx_ppp);
1571         if (err) {
1572                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1573                        priv->port, err);
1574                 goto tx_err;
1575         }
1576         /* Set default qp number */
1577         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1578         if (err) {
1579                 en_err(priv, "Failed setting default qp numbers\n");
1580                 goto tx_err;
1581         }
1582
1583         /* Init port */
1584         en_dbg(HW, priv, "Initializing port\n");
1585         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1586         if (err) {
1587                 en_err(priv, "Failed Initializing port\n");
1588                 goto tx_err;
1589         }
1590
1591         /* Attach rx QP to bradcast address */
1592         memset(&mc_list[10], 0xff, ETH_ALEN);
1593         mc_list[5] = priv->port; /* needed for B0 steering support */
1594         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1595                                   priv->port, 0, MLX4_PROT_ETH,
1596                                   &priv->broadcast_id))
1597                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1598
1599         /* Must redo promiscuous mode setup. */
1600         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1601
1602         /* Schedule multicast task to populate multicast list */
1603         queue_work(mdev->workqueue, &priv->rx_mode_task);
1604
1605         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1606
1607         priv->port_up = true;
1608         netif_tx_start_all_queues(dev);
1609         netif_device_attach(dev);
1610
1611         return 0;
1612
1613 tx_err:
1614         while (tx_index--) {
1615                 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
1616                 mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
1617         }
1618         mlx4_en_destroy_drop_qp(priv);
1619 rss_err:
1620         mlx4_en_release_rss_steer(priv);
1621 mac_err:
1622         mlx4_en_put_qp(priv);
1623 cq_err:
1624         while (rx_index--)
1625                 mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
1626         for (i = 0; i < priv->rx_ring_num; i++)
1627                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1628
1629         return err; /* need to close devices */
1630 }
1631
1632
1633 void mlx4_en_stop_port(struct net_device *dev, int detach)
1634 {
1635         struct mlx4_en_priv *priv = netdev_priv(dev);
1636         struct mlx4_en_dev *mdev = priv->mdev;
1637         struct mlx4_en_mc_list *mclist, *tmp;
1638         struct ethtool_flow_id *flow, *tmp_flow;
1639         int i;
1640         u8 mc_list[16] = {0};
1641
1642         if (!priv->port_up) {
1643                 en_dbg(DRV, priv, "stop port called while port already down\n");
1644                 return;
1645         }
1646
1647         /* close port*/
1648         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1649
1650         /* Synchronize with tx routine */
1651         netif_tx_lock_bh(dev);
1652         if (detach)
1653                 netif_device_detach(dev);
1654         netif_tx_stop_all_queues(dev);
1655         netif_tx_unlock_bh(dev);
1656
1657         netif_tx_disable(dev);
1658
1659         /* Set port as not active */
1660         priv->port_up = false;
1661
1662         /* Promsicuous mode */
1663         if (mdev->dev->caps.steering_mode ==
1664             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1665                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1666                                  MLX4_EN_FLAG_MC_PROMISC);
1667                 mlx4_flow_steer_promisc_remove(mdev->dev,
1668                                                priv->port,
1669                                                MLX4_FS_ALL_DEFAULT);
1670                 mlx4_flow_steer_promisc_remove(mdev->dev,
1671                                                priv->port,
1672                                                MLX4_FS_MC_DEFAULT);
1673         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1674                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1675
1676                 /* Disable promiscouos mode */
1677                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1678                                             priv->port);
1679
1680                 /* Disable Multicast promisc */
1681                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1682                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1683                                                       priv->port);
1684                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1685                 }
1686         }
1687
1688         /* Detach All multicasts */
1689         memset(&mc_list[10], 0xff, ETH_ALEN);
1690         mc_list[5] = priv->port; /* needed for B0 steering support */
1691         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1692                               MLX4_PROT_ETH, priv->broadcast_id);
1693         list_for_each_entry(mclist, &priv->curr_list, list) {
1694                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1695                 mc_list[5] = priv->port;
1696                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1697                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1698         }
1699         mlx4_en_clear_list(dev);
1700         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1701                 list_del(&mclist->list);
1702                 kfree(mclist);
1703         }
1704
1705         /* Flush multicast filter */
1706         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1707
1708         /* Remove flow steering rules for the port*/
1709         if (mdev->dev->caps.steering_mode ==
1710             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1711                 ASSERT_RTNL();
1712                 list_for_each_entry_safe(flow, tmp_flow,
1713                                          &priv->ethtool_list, list) {
1714                         mlx4_flow_detach(mdev->dev, flow->id);
1715                         list_del(&flow->list);
1716                 }
1717         }
1718
1719         mlx4_en_destroy_drop_qp(priv);
1720
1721         /* Free TX Rings */
1722         for (i = 0; i < priv->tx_ring_num; i++) {
1723                 mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
1724                 mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
1725         }
1726         msleep(10);
1727
1728         for (i = 0; i < priv->tx_ring_num; i++)
1729                 mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
1730
1731         /* Free RSS qps */
1732         mlx4_en_release_rss_steer(priv);
1733
1734         /* Unregister Mac address for the port */
1735         mlx4_en_put_qp(priv);
1736         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN))
1737                 mdev->mac_removed[priv->port] = 1;
1738
1739         /* Free RX Rings */
1740         for (i = 0; i < priv->rx_ring_num; i++) {
1741                 struct mlx4_en_cq *cq = &priv->rx_cq[i];
1742
1743                 local_bh_disable();
1744                 while (!mlx4_en_cq_lock_napi(cq)) {
1745                         pr_info("CQ %d locked\n", i);
1746                         mdelay(1);
1747                 }
1748                 local_bh_enable();
1749
1750                 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1751                         msleep(1);
1752                 mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
1753                 mlx4_en_deactivate_cq(priv, cq);
1754         }
1755 }
1756
1757 static void mlx4_en_restart(struct work_struct *work)
1758 {
1759         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1760                                                  watchdog_task);
1761         struct mlx4_en_dev *mdev = priv->mdev;
1762         struct net_device *dev = priv->dev;
1763
1764         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1765
1766         mutex_lock(&mdev->state_lock);
1767         if (priv->port_up) {
1768                 mlx4_en_stop_port(dev, 1);
1769                 if (mlx4_en_start_port(dev))
1770                         en_err(priv, "Failed restarting port %d\n", priv->port);
1771         }
1772         mutex_unlock(&mdev->state_lock);
1773 }
1774
1775 static void mlx4_en_clear_stats(struct net_device *dev)
1776 {
1777         struct mlx4_en_priv *priv = netdev_priv(dev);
1778         struct mlx4_en_dev *mdev = priv->mdev;
1779         int i;
1780
1781         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1782                 en_dbg(HW, priv, "Failed dumping statistics\n");
1783
1784         memset(&priv->stats, 0, sizeof(priv->stats));
1785         memset(&priv->pstats, 0, sizeof(priv->pstats));
1786         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1787         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1788
1789         for (i = 0; i < priv->tx_ring_num; i++) {
1790                 priv->tx_ring[i].bytes = 0;
1791                 priv->tx_ring[i].packets = 0;
1792                 priv->tx_ring[i].tx_csum = 0;
1793         }
1794         for (i = 0; i < priv->rx_ring_num; i++) {
1795                 priv->rx_ring[i].bytes = 0;
1796                 priv->rx_ring[i].packets = 0;
1797                 priv->rx_ring[i].csum_ok = 0;
1798                 priv->rx_ring[i].csum_none = 0;
1799         }
1800 }
1801
1802 static int mlx4_en_open(struct net_device *dev)
1803 {
1804         struct mlx4_en_priv *priv = netdev_priv(dev);
1805         struct mlx4_en_dev *mdev = priv->mdev;
1806         int err = 0;
1807
1808         mutex_lock(&mdev->state_lock);
1809
1810         if (!mdev->device_up) {
1811                 en_err(priv, "Cannot open - device down/disabled\n");
1812                 err = -EBUSY;
1813                 goto out;
1814         }
1815
1816         /* Reset HW statistics and SW counters */
1817         mlx4_en_clear_stats(dev);
1818
1819         err = mlx4_en_start_port(dev);
1820         if (err)
1821                 en_err(priv, "Failed starting port:%d\n", priv->port);
1822
1823 out:
1824         mutex_unlock(&mdev->state_lock);
1825         return err;
1826 }
1827
1828
1829 static int mlx4_en_close(struct net_device *dev)
1830 {
1831         struct mlx4_en_priv *priv = netdev_priv(dev);
1832         struct mlx4_en_dev *mdev = priv->mdev;
1833
1834         en_dbg(IFDOWN, priv, "Close port called\n");
1835
1836         mutex_lock(&mdev->state_lock);
1837
1838         mlx4_en_stop_port(dev, 0);
1839         netif_carrier_off(dev);
1840
1841         mutex_unlock(&mdev->state_lock);
1842         return 0;
1843 }
1844
1845 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1846 {
1847         int i;
1848
1849 #ifdef CONFIG_RFS_ACCEL
1850         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1851         priv->dev->rx_cpu_rmap = NULL;
1852 #endif
1853
1854         for (i = 0; i < priv->tx_ring_num; i++) {
1855                 if (priv->tx_ring[i].tx_info)
1856                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1857                 if (priv->tx_cq[i].buf)
1858                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1859         }
1860
1861         for (i = 0; i < priv->rx_ring_num; i++) {
1862                 if (priv->rx_ring[i].rx_info)
1863                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1864                                 priv->prof->rx_ring_size, priv->stride);
1865                 if (priv->rx_cq[i].buf)
1866                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1867         }
1868
1869         if (priv->base_tx_qpn) {
1870                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
1871                 priv->base_tx_qpn = 0;
1872         }
1873 }
1874
1875 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
1876 {
1877         struct mlx4_en_port_profile *prof = priv->prof;
1878         int i;
1879         int err;
1880
1881         err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
1882         if (err) {
1883                 en_err(priv, "failed reserving range for TX rings\n");
1884                 return err;
1885         }
1886
1887         /* Create tx Rings */
1888         for (i = 0; i < priv->tx_ring_num; i++) {
1889                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
1890                                       prof->tx_ring_size, i, TX))
1891                         goto err;
1892
1893                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i], priv->base_tx_qpn + i,
1894                                            prof->tx_ring_size, TXBB_SIZE))
1895                         goto err;
1896         }
1897
1898         /* Create rx Rings */
1899         for (i = 0; i < priv->rx_ring_num; i++) {
1900                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
1901                                       prof->rx_ring_size, i, RX))
1902                         goto err;
1903
1904                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
1905                                            prof->rx_ring_size, priv->stride))
1906                         goto err;
1907         }
1908
1909 #ifdef CONFIG_RFS_ACCEL
1910         if (priv->mdev->dev->caps.comp_pool) {
1911                 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
1912                 if (!priv->dev->rx_cpu_rmap)
1913                         goto err;
1914         }
1915 #endif
1916
1917         return 0;
1918
1919 err:
1920         en_err(priv, "Failed to allocate NIC resources\n");
1921         return -ENOMEM;
1922 }
1923
1924
1925 void mlx4_en_destroy_netdev(struct net_device *dev)
1926 {
1927         struct mlx4_en_priv *priv = netdev_priv(dev);
1928         struct mlx4_en_dev *mdev = priv->mdev;
1929
1930         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
1931
1932         /* Unregister device - this will close the port if it was up */
1933         if (priv->registered)
1934                 unregister_netdev(dev);
1935
1936         if (priv->allocated)
1937                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
1938
1939         cancel_delayed_work(&priv->stats_task);
1940         cancel_delayed_work(&priv->service_task);
1941         /* flush any pending task for this netdev */
1942         flush_workqueue(mdev->workqueue);
1943
1944         /* Detach the netdev so tasks would not attempt to access it */
1945         mutex_lock(&mdev->state_lock);
1946         mdev->pndev[priv->port] = NULL;
1947         mutex_unlock(&mdev->state_lock);
1948
1949         mlx4_en_free_resources(priv);
1950
1951         kfree(priv->tx_ring);
1952         kfree(priv->tx_cq);
1953
1954         free_netdev(dev);
1955 }
1956
1957 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
1958 {
1959         struct mlx4_en_priv *priv = netdev_priv(dev);
1960         struct mlx4_en_dev *mdev = priv->mdev;
1961         int err = 0;
1962
1963         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
1964                  dev->mtu, new_mtu);
1965
1966         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
1967                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
1968                 return -EPERM;
1969         }
1970         dev->mtu = new_mtu;
1971
1972         if (netif_running(dev)) {
1973                 mutex_lock(&mdev->state_lock);
1974                 if (!mdev->device_up) {
1975                         /* NIC is probably restarting - let watchdog task reset
1976                          * the port */
1977                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
1978                 } else {
1979                         mlx4_en_stop_port(dev, 1);
1980                         err = mlx4_en_start_port(dev);
1981                         if (err) {
1982                                 en_err(priv, "Failed restarting port:%d\n",
1983                                          priv->port);
1984                                 queue_work(mdev->workqueue, &priv->watchdog_task);
1985                         }
1986                 }
1987                 mutex_unlock(&mdev->state_lock);
1988         }
1989         return 0;
1990 }
1991
1992 static int mlx4_en_hwtstamp_ioctl(struct net_device *dev, struct ifreq *ifr)
1993 {
1994         struct mlx4_en_priv *priv = netdev_priv(dev);
1995         struct mlx4_en_dev *mdev = priv->mdev;
1996         struct hwtstamp_config config;
1997
1998         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
1999                 return -EFAULT;
2000
2001         /* reserved for future extensions */
2002         if (config.flags)
2003                 return -EINVAL;
2004
2005         /* device doesn't support time stamping */
2006         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2007                 return -EINVAL;
2008
2009         /* TX HW timestamp */
2010         switch (config.tx_type) {
2011         case HWTSTAMP_TX_OFF:
2012         case HWTSTAMP_TX_ON:
2013                 break;
2014         default:
2015                 return -ERANGE;
2016         }
2017
2018         /* RX HW timestamp */
2019         switch (config.rx_filter) {
2020         case HWTSTAMP_FILTER_NONE:
2021                 break;
2022         case HWTSTAMP_FILTER_ALL:
2023         case HWTSTAMP_FILTER_SOME:
2024         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2025         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2026         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2027         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2028         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2029         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2030         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2031         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2032         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2033         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2034         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2035         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2036                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2037                 break;
2038         default:
2039                 return -ERANGE;
2040         }
2041
2042         if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2043                 config.tx_type = HWTSTAMP_TX_OFF;
2044                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2045         }
2046
2047         return copy_to_user(ifr->ifr_data, &config,
2048                             sizeof(config)) ? -EFAULT : 0;
2049 }
2050
2051 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2052 {
2053         switch (cmd) {
2054         case SIOCSHWTSTAMP:
2055                 return mlx4_en_hwtstamp_ioctl(dev, ifr);
2056         default:
2057                 return -EOPNOTSUPP;
2058         }
2059 }
2060
2061 static int mlx4_en_set_features(struct net_device *netdev,
2062                 netdev_features_t features)
2063 {
2064         struct mlx4_en_priv *priv = netdev_priv(netdev);
2065
2066         if (features & NETIF_F_LOOPBACK)
2067                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2068         else
2069                 priv->ctrl_flags &=
2070                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2071
2072         mlx4_en_update_loopback_state(netdev, features);
2073
2074         return 0;
2075
2076 }
2077
2078 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2079 {
2080         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2081         struct mlx4_en_dev *mdev = en_priv->mdev;
2082         u64 mac_u64 = mlx4_en_mac_to_u64(mac);
2083
2084         if (!is_valid_ether_addr(mac))
2085                 return -EINVAL;
2086
2087         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2088 }
2089
2090 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2091 {
2092         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2093         struct mlx4_en_dev *mdev = en_priv->mdev;
2094
2095         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2096 }
2097
2098 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2099 {
2100         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2101         struct mlx4_en_dev *mdev = en_priv->mdev;
2102
2103         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2104 }
2105
2106 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2107 {
2108         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2109         struct mlx4_en_dev *mdev = en_priv->mdev;
2110
2111         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2112 }
2113
2114 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2115 {
2116         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2117         struct mlx4_en_dev *mdev = en_priv->mdev;
2118
2119         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2120 }
2121 static const struct net_device_ops mlx4_netdev_ops = {
2122         .ndo_open               = mlx4_en_open,
2123         .ndo_stop               = mlx4_en_close,
2124         .ndo_start_xmit         = mlx4_en_xmit,
2125         .ndo_select_queue       = mlx4_en_select_queue,
2126         .ndo_get_stats          = mlx4_en_get_stats,
2127         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2128         .ndo_set_mac_address    = mlx4_en_set_mac,
2129         .ndo_validate_addr      = eth_validate_addr,
2130         .ndo_change_mtu         = mlx4_en_change_mtu,
2131         .ndo_do_ioctl           = mlx4_en_ioctl,
2132         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2133         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2134         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2135 #ifdef CONFIG_NET_POLL_CONTROLLER
2136         .ndo_poll_controller    = mlx4_en_netpoll,
2137 #endif
2138         .ndo_set_features       = mlx4_en_set_features,
2139         .ndo_setup_tc           = mlx4_en_setup_tc,
2140 #ifdef CONFIG_RFS_ACCEL
2141         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2142 #endif
2143 #ifdef CONFIG_NET_RX_BUSY_POLL
2144         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2145 #endif
2146 };
2147
2148 static const struct net_device_ops mlx4_netdev_ops_master = {
2149         .ndo_open               = mlx4_en_open,
2150         .ndo_stop               = mlx4_en_close,
2151         .ndo_start_xmit         = mlx4_en_xmit,
2152         .ndo_select_queue       = mlx4_en_select_queue,
2153         .ndo_get_stats          = mlx4_en_get_stats,
2154         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2155         .ndo_set_mac_address    = mlx4_en_set_mac,
2156         .ndo_validate_addr      = eth_validate_addr,
2157         .ndo_change_mtu         = mlx4_en_change_mtu,
2158         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2159         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2160         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2161         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2162         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2163         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2164         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2165         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2166 #ifdef CONFIG_NET_POLL_CONTROLLER
2167         .ndo_poll_controller    = mlx4_en_netpoll,
2168 #endif
2169         .ndo_set_features       = mlx4_en_set_features,
2170         .ndo_setup_tc           = mlx4_en_setup_tc,
2171 #ifdef CONFIG_RFS_ACCEL
2172         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2173 #endif
2174 };
2175
2176 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2177                         struct mlx4_en_port_profile *prof)
2178 {
2179         struct net_device *dev;
2180         struct mlx4_en_priv *priv;
2181         int i;
2182         int err;
2183         u64 mac_u64;
2184
2185         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2186                                  MAX_TX_RINGS, MAX_RX_RINGS);
2187         if (dev == NULL)
2188                 return -ENOMEM;
2189
2190         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2191         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2192
2193         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2194         dev->dev_id =  port - 1;
2195
2196         /*
2197          * Initialize driver private data
2198          */
2199
2200         priv = netdev_priv(dev);
2201         memset(priv, 0, sizeof(struct mlx4_en_priv));
2202         priv->dev = dev;
2203         priv->mdev = mdev;
2204         priv->ddev = &mdev->pdev->dev;
2205         priv->prof = prof;
2206         priv->port = port;
2207         priv->port_up = false;
2208         priv->flags = prof->flags;
2209         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2210                         MLX4_WQE_CTRL_SOLICITED);
2211         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2212         priv->tx_ring_num = prof->tx_ring_num;
2213
2214         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring) * MAX_TX_RINGS,
2215                                 GFP_KERNEL);
2216         if (!priv->tx_ring) {
2217                 err = -ENOMEM;
2218                 goto out;
2219         }
2220         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq) * MAX_TX_RINGS,
2221                               GFP_KERNEL);
2222         if (!priv->tx_cq) {
2223                 err = -ENOMEM;
2224                 goto out;
2225         }
2226         priv->rx_ring_num = prof->rx_ring_num;
2227         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2228         priv->mac_index = -1;
2229         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2230         spin_lock_init(&priv->stats_lock);
2231         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2232         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2233         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2234         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2235         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2236 #ifdef CONFIG_MLX4_EN_DCB
2237         if (!mlx4_is_slave(priv->mdev->dev)) {
2238                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2239                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2240                 } else {
2241                         en_info(priv, "enabling only PFC DCB ops\n");
2242                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2243                 }
2244         }
2245 #endif
2246
2247         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2248                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2249
2250         /* Query for default mac and max mtu */
2251         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2252
2253         /* Set default MAC */
2254         dev->addr_len = ETH_ALEN;
2255         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2256         if (!is_valid_ether_addr(dev->dev_addr)) {
2257                 if (mlx4_is_slave(priv->mdev->dev)) {
2258                         eth_hw_addr_random(dev);
2259                         en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2260                         mac_u64 = mlx4_en_mac_to_u64(dev->dev_addr);
2261                         mdev->dev->caps.def_mac[priv->port] = mac_u64;
2262                 } else {
2263                         en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2264                                priv->port, dev->dev_addr);
2265                         err = -EINVAL;
2266                         goto out;
2267                 }
2268         }
2269
2270         memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2271
2272         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2273                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2274         err = mlx4_en_alloc_resources(priv);
2275         if (err)
2276                 goto out;
2277
2278 #ifdef CONFIG_RFS_ACCEL
2279         INIT_LIST_HEAD(&priv->filters);
2280         spin_lock_init(&priv->filters_lock);
2281 #endif
2282
2283         /* Initialize time stamping config */
2284         priv->hwtstamp_config.flags = 0;
2285         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2286         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2287
2288         /* Allocate page for receive rings */
2289         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2290                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2291         if (err) {
2292                 en_err(priv, "Failed to allocate page for rx qps\n");
2293                 goto out;
2294         }
2295         priv->allocated = 1;
2296
2297         /*
2298          * Initialize netdev entry points
2299          */
2300         if (mlx4_is_master(priv->mdev->dev))
2301                 dev->netdev_ops = &mlx4_netdev_ops_master;
2302         else
2303                 dev->netdev_ops = &mlx4_netdev_ops;
2304         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2305         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2306         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2307
2308         SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
2309
2310         /*
2311          * Set driver features
2312          */
2313         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2314         if (mdev->LSO_support)
2315                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2316
2317         dev->vlan_features = dev->hw_features;
2318
2319         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2320         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2321                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2322                         NETIF_F_HW_VLAN_CTAG_FILTER;
2323         dev->hw_features |= NETIF_F_LOOPBACK;
2324
2325         if (mdev->dev->caps.steering_mode ==
2326             MLX4_STEERING_MODE_DEVICE_MANAGED)
2327                 dev->hw_features |= NETIF_F_NTUPLE;
2328
2329         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2330                 dev->priv_flags |= IFF_UNICAST_FLT;
2331
2332         mdev->pndev[port] = dev;
2333
2334         netif_carrier_off(dev);
2335         mlx4_en_set_default_moderation(priv);
2336
2337         err = register_netdev(dev);
2338         if (err) {
2339                 en_err(priv, "Netdev registration failed for port %d\n", port);
2340                 goto out;
2341         }
2342         priv->registered = 1;
2343
2344         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2345         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2346
2347         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2348
2349         /* Configure port */
2350         mlx4_en_calc_rx_buf(dev);
2351         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2352                                     priv->rx_skb_size + ETH_FCS_LEN,
2353                                     prof->tx_pause, prof->tx_ppp,
2354                                     prof->rx_pause, prof->rx_ppp);
2355         if (err) {
2356                 en_err(priv, "Failed setting port general configurations "
2357                        "for port %d, with error %d\n", priv->port, err);
2358                 goto out;
2359         }
2360
2361         /* Init port */
2362         en_warn(priv, "Initializing port\n");
2363         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2364         if (err) {
2365                 en_err(priv, "Failed Initializing port\n");
2366                 goto out;
2367         }
2368         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2369
2370         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2371                 queue_delayed_work(mdev->workqueue, &priv->service_task,
2372                                    SERVICE_TASK_DELAY);
2373
2374         return 0;
2375
2376 out:
2377         mlx4_en_destroy_netdev(dev);
2378         return err;
2379 }
2380