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