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

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/etherdevice.h>
  35 #include <linux/tcp.h>
  36 #include <linux/if_vlan.h>
  37 #include <linux/delay.h>
  38 #include <linux/slab.h>
  39 #include <linux/hash.h>
  40 #include <net/ip.h>
  41 #include <net/busy_poll.h>
  42 #include <net/vxlan.h>
  43
  44 #include <linux/mlx4/driver.h>
  45 #include <linux/mlx4/device.h>
  46 #include <linux/mlx4/cmd.h>
  47 #include <linux/mlx4/cq.h>
  48
  49 #include "mlx4_en.h"
  50 #include "en_port.h"
  51
  52 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  53 {
  54         struct mlx4_en_priv *priv = netdev_priv(dev);
  55         int i;
  56         unsigned int offset = 0;
  57
  58         if (up && up != MLX4_EN_NUM_UP)
  59                 return -EINVAL;
  60
  61         netdev_set_num_tc(dev, up);
  62
  63         /* Partition Tx queues evenly amongst UP's */
  64         for (i = 0; i < up; i++) {
  65                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  66                 offset += priv->num_tx_rings_p_up;
  67         }
  68
  69         return 0;
  70 }
  71
  72 #ifdef CONFIG_NET_RX_BUSY_POLL
  73 /* must be called with local_bh_disable()d */
  74 static int mlx4_en_low_latency_recv(struct napi_struct *napi)
  75 {
  76         struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
  77         struct net_device *dev = cq->dev;
  78         struct mlx4_en_priv *priv = netdev_priv(dev);
  79         struct mlx4_en_rx_ring *rx_ring = priv->rx_ring[cq->ring];
  80         int done;
  81
  82         if (!priv->port_up)
  83                 return LL_FLUSH_FAILED;
  84
  85         if (!mlx4_en_cq_lock_poll(cq))
  86                 return LL_FLUSH_BUSY;
  87
  88         done = mlx4_en_process_rx_cq(dev, cq, 4);
  89         if (likely(done))
  90                 rx_ring->cleaned += done;
  91         else
  92                 rx_ring->misses++;
  93
  94         mlx4_en_cq_unlock_poll(cq);
  95
  96         return done;
  97 }
  98 #endif  /* CONFIG_NET_RX_BUSY_POLL */
  99
 100 #ifdef CONFIG_RFS_ACCEL
 101
 102 struct mlx4_en_filter {
 103         struct list_head next;
 104         struct work_struct work;
 105
 106         u8     ip_proto;
 107         __be32 src_ip;
 108         __be32 dst_ip;
 109         __be16 src_port;
 110         __be16 dst_port;
 111
 112         int rxq_index;
 113         struct mlx4_en_priv *priv;
 114         u32 flow_id;                    /* RFS infrastructure id */
 115         int id;                         /* mlx4_en driver id */
 116         u64 reg_id;                     /* Flow steering API id */
 117         u8 activated;                   /* Used to prevent expiry before filter
 118                                          * is attached
 119                                          */
 120         struct hlist_node filter_chain;
 121 };
 122
 123 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 124
 125 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 126 {
 127         switch (ip_proto) {
 128         case IPPROTO_UDP:
 129                 return MLX4_NET_TRANS_RULE_ID_UDP;
 130         case IPPROTO_TCP:
 131                 return MLX4_NET_TRANS_RULE_ID_TCP;
 132         default:
 133                 return MLX4_NET_TRANS_RULE_NUM;
 134         }
 135 };
 136
 137 static void mlx4_en_filter_work(struct work_struct *work)
 138 {
 139         struct mlx4_en_filter *filter = container_of(work,
 140                                                      struct mlx4_en_filter,
 141                                                      work);
 142         struct mlx4_en_priv *priv = filter->priv;
 143         struct mlx4_spec_list spec_tcp_udp = {
 144                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 145                 {
 146                         .tcp_udp = {
 147                                 .dst_port = filter->dst_port,
 148                                 .dst_port_msk = (__force __be16)-1,
 149                                 .src_port = filter->src_port,
 150                                 .src_port_msk = (__force __be16)-1,
 151                         },
 152                 },
 153         };
 154         struct mlx4_spec_list spec_ip = {
 155                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 156                 {
 157                         .ipv4 = {
 158                                 .dst_ip = filter->dst_ip,
 159                                 .dst_ip_msk = (__force __be32)-1,
 160                                 .src_ip = filter->src_ip,
 161                                 .src_ip_msk = (__force __be32)-1,
 162                         },
 163                 },
 164         };
 165         struct mlx4_spec_list spec_eth = {
 166                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 167         };
 168         struct mlx4_net_trans_rule rule = {
 169                 .list = LIST_HEAD_INIT(rule.list),
 170                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 171                 .exclusive = 1,
 172                 .allow_loopback = 1,
 173                 .promisc_mode = MLX4_FS_REGULAR,
 174                 .port = priv->port,
 175                 .priority = MLX4_DOMAIN_RFS,
 176         };
 177         int rc;
 178         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 179
 180         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 181                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 182                         filter->ip_proto);
 183                 goto ignore;
 184         }
 185         list_add_tail(&spec_eth.list, &rule.list);
 186         list_add_tail(&spec_ip.list, &rule.list);
 187         list_add_tail(&spec_tcp_udp.list, &rule.list);
 188
 189         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 190         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 191         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 192
 193         filter->activated = 0;
 194
 195         if (filter->reg_id) {
 196                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 197                 if (rc && rc != -ENOENT)
 198                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 199         }
 200
 201         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 202         if (rc)
 203                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 204
 205 ignore:
 206         mlx4_en_filter_rfs_expire(priv);
 207
 208         filter->activated = 1;
 209 }
 210
 211 static inline struct hlist_head *
 212 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 213                    __be16 src_port, __be16 dst_port)
 214 {
 215         unsigned long l;
 216         int bucket_idx;
 217
 218         l = (__force unsigned long)src_port |
 219             ((__force unsigned long)dst_port << 2);
 220         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 221
 222         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 223
 224         return &priv->filter_hash[bucket_idx];
 225 }
 226
 227 static struct mlx4_en_filter *
 228 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 229                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 230                      __be16 dst_port, u32 flow_id)
 231 {
 232         struct mlx4_en_filter *filter = NULL;
 233
 234         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 235         if (!filter)
 236                 return NULL;
 237
 238         filter->priv = priv;
 239         filter->rxq_index = rxq_index;
 240         INIT_WORK(&filter->work, mlx4_en_filter_work);
 241
 242         filter->src_ip = src_ip;
 243         filter->dst_ip = dst_ip;
 244         filter->ip_proto = ip_proto;
 245         filter->src_port = src_port;
 246         filter->dst_port = dst_port;
 247
 248         filter->flow_id = flow_id;
 249
 250         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 251
 252         list_add_tail(&filter->next, &priv->filters);
 253         hlist_add_head(&filter->filter_chain,
 254                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 255                                           dst_port));
 256
 257         return filter;
 258 }
 259
 260 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 261 {
 262         struct mlx4_en_priv *priv = filter->priv;
 263         int rc;
 264
 265         list_del(&filter->next);
 266
 267         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 268         if (rc && rc != -ENOENT)
 269                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 270
 271         kfree(filter);
 272 }
 273
 274 static inline struct mlx4_en_filter *
 275 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 276                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 277 {
 278         struct mlx4_en_filter *filter;
 279         struct mlx4_en_filter *ret = NULL;
 280
 281         hlist_for_each_entry(filter,
 282                              filter_hash_bucket(priv, src_ip, dst_ip,
 283                                                 src_port, dst_port),
 284                              filter_chain) {
 285                 if (filter->src_ip == src_ip &&
 286                     filter->dst_ip == dst_ip &&
 287                     filter->ip_proto == ip_proto &&
 288                     filter->src_port == src_port &&
 289                     filter->dst_port == dst_port) {
 290                         ret = filter;
 291                         break;
 292                 }
 293         }
 294
 295         return ret;
 296 }
 297
 298 static int
 299 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 300                    u16 rxq_index, u32 flow_id)
 301 {
 302         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 303         struct mlx4_en_filter *filter;
 304         const struct iphdr *ip;
 305         const __be16 *ports;
 306         u8 ip_proto;
 307         __be32 src_ip;
 308         __be32 dst_ip;
 309         __be16 src_port;
 310         __be16 dst_port;
 311         int nhoff = skb_network_offset(skb);
 312         int ret = 0;
 313
 314         if (skb->protocol != htons(ETH_P_IP))
 315                 return -EPROTONOSUPPORT;
 316
 317         ip = (const struct iphdr *)(skb->data + nhoff);
 318         if (ip_is_fragment(ip))
 319                 return -EPROTONOSUPPORT;
 320
 321         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 322                 return -EPROTONOSUPPORT;
 323         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 324
 325         ip_proto = ip->protocol;
 326         src_ip = ip->saddr;
 327         dst_ip = ip->daddr;
 328         src_port = ports[0];
 329         dst_port = ports[1];
 330
 331         spin_lock_bh(&priv->filters_lock);
 332         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 333                                      src_port, dst_port);
 334         if (filter) {
 335                 if (filter->rxq_index == rxq_index)
 336                         goto out;
 337
 338                 filter->rxq_index = rxq_index;
 339         } else {
 340                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 341                                               src_ip, dst_ip, ip_proto,
 342                                               src_port, dst_port, flow_id);
 343                 if (!filter) {
 344                         ret = -ENOMEM;
 345                         goto err;
 346                 }
 347         }
 348
 349         queue_work(priv->mdev->workqueue, &filter->work);
 350
 351 out:
 352         ret = filter->id;
 353 err:
 354         spin_unlock_bh(&priv->filters_lock);
 355
 356         return ret;
 357 }
 358
 359 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 360 {
 361         struct mlx4_en_filter *filter, *tmp;
 362         LIST_HEAD(del_list);
 363
 364         spin_lock_bh(&priv->filters_lock);
 365         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 366                 list_move(&filter->next, &del_list);
 367                 hlist_del(&filter->filter_chain);
 368         }
 369         spin_unlock_bh(&priv->filters_lock);
 370
 371         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 372                 cancel_work_sync(&filter->work);
 373                 mlx4_en_filter_free(filter);
 374         }
 375 }
 376
 377 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 378 {
 379         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 380         LIST_HEAD(del_list);
 381         int i = 0;
 382
 383         spin_lock_bh(&priv->filters_lock);
 384         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 385                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 386                         break;
 387
 388                 if (filter->activated &&
 389                     !work_pending(&filter->work) &&
 390                     rps_may_expire_flow(priv->dev,
 391                                         filter->rxq_index, filter->flow_id,
 392                                         filter->id)) {
 393                         list_move(&filter->next, &del_list);
 394                         hlist_del(&filter->filter_chain);
 395                 } else
 396                         last_filter = filter;
 397
 398                 i++;
 399         }
 400
 401         if (last_filter && (&last_filter->next != priv->filters.next))
 402                 list_move(&priv->filters, &last_filter->next);
 403
 404         spin_unlock_bh(&priv->filters_lock);
 405
 406         list_for_each_entry_safe(filter, tmp, &del_list, next)
 407                 mlx4_en_filter_free(filter);
 408 }
 409 #endif
 410
 411 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 412                                    __be16 proto, u16 vid)
 413 {
 414         struct mlx4_en_priv *priv = netdev_priv(dev);
 415         struct mlx4_en_dev *mdev = priv->mdev;
 416         int err;
 417         int idx;
 418
 419         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 420
 421         set_bit(vid, priv->active_vlans);
 422
 423         /* Add VID to port VLAN filter */
 424         mutex_lock(&mdev->state_lock);
 425         if (mdev->device_up && priv->port_up) {
 426                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 427                 if (err)
 428                         en_err(priv, "Failed configuring VLAN filter\n");
 429         }
 430         if (mlx4_register_vlan(mdev->dev, priv->port, vid, &idx))
 431                 en_dbg(HW, priv, "failed adding vlan %d\n", vid);
 432         mutex_unlock(&mdev->state_lock);
 433
 434         return 0;
 435 }
 436
 437 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 438                                     __be16 proto, u16 vid)
 439 {
 440         struct mlx4_en_priv *priv = netdev_priv(dev);
 441         struct mlx4_en_dev *mdev = priv->mdev;
 442         int err;
 443
 444         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 445
 446         clear_bit(vid, priv->active_vlans);
 447
 448         /* Remove VID from port VLAN filter */
 449         mutex_lock(&mdev->state_lock);
 450         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 451
 452         if (mdev->device_up && priv->port_up) {
 453                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 454                 if (err)
 455                         en_err(priv, "Failed configuring VLAN filter\n");
 456         }
 457         mutex_unlock(&mdev->state_lock);
 458
 459         return 0;
 460 }
 461
 462 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 463 {
 464         int i;
 465         for (i = ETH_ALEN - 1; i >= 0; --i) {
 466                 dst_mac[i] = src_mac & 0xff;
 467                 src_mac >>= 8;
 468         }
 469         memset(&dst_mac[ETH_ALEN], 0, 2);
 470 }
 471
 472
 473 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 474                                     int qpn, u64 *reg_id)
 475 {
 476         int err;
 477         struct mlx4_spec_list spec_eth_outer = { {NULL} };
 478         struct mlx4_spec_list spec_vxlan     = { {NULL} };
 479         struct mlx4_spec_list spec_eth_inner = { {NULL} };
 480
 481         struct mlx4_net_trans_rule rule = {
 482                 .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 483                 .exclusive = 0,
 484                 .allow_loopback = 1,
 485                 .promisc_mode = MLX4_FS_REGULAR,
 486                 .priority = MLX4_DOMAIN_NIC,
 487         };
 488
 489         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 490
 491         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
 492                 return 0; /* do nothing */
 493
 494         rule.port = priv->port;
 495         rule.qpn = qpn;
 496         INIT_LIST_HEAD(&rule.list);
 497
 498         spec_eth_outer.id = MLX4_NET_TRANS_RULE_ID_ETH;
 499         memcpy(spec_eth_outer.eth.dst_mac, addr, ETH_ALEN);
 500         memcpy(spec_eth_outer.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 501
 502         spec_vxlan.id = MLX4_NET_TRANS_RULE_ID_VXLAN;    /* any vxlan header */
 503         spec_eth_inner.id = MLX4_NET_TRANS_RULE_ID_ETH;  /* any inner eth header */
 504
 505         list_add_tail(&spec_eth_outer.list, &rule.list);
 506         list_add_tail(&spec_vxlan.list,     &rule.list);
 507         list_add_tail(&spec_eth_inner.list, &rule.list);
 508
 509         err = mlx4_flow_attach(priv->mdev->dev, &rule, reg_id);
 510         if (err) {
 511                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 512                 return err;
 513         }
 514         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 515         return 0;
 516 }
 517
 518
 519 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 520                                 unsigned char *mac, int *qpn, u64 *reg_id)
 521 {
 522         struct mlx4_en_dev *mdev = priv->mdev;
 523         struct mlx4_dev *dev = mdev->dev;
 524         int err;
 525
 526         switch (dev->caps.steering_mode) {
 527         case MLX4_STEERING_MODE_B0: {
 528                 struct mlx4_qp qp;
 529                 u8 gid[16] = {0};
 530
 531                 qp.qpn = *qpn;
 532                 memcpy(&gid[10], mac, ETH_ALEN);
 533                 gid[5] = priv->port;
 534
 535                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 536                 break;
 537         }
 538         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 539                 struct mlx4_spec_list spec_eth = { {NULL} };
 540                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 541
 542                 struct mlx4_net_trans_rule rule = {
 543                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 544                         .exclusive = 0,
 545                         .allow_loopback = 1,
 546                         .promisc_mode = MLX4_FS_REGULAR,
 547                         .priority = MLX4_DOMAIN_NIC,
 548                 };
 549
 550                 rule.port = priv->port;
 551                 rule.qpn = *qpn;
 552                 INIT_LIST_HEAD(&rule.list);
 553
 554                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 555                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 556                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 557                 list_add_tail(&spec_eth.list, &rule.list);
 558
 559                 err = mlx4_flow_attach(dev, &rule, reg_id);
 560                 break;
 561         }
 562         default:
 563                 return -EINVAL;
 564         }
 565         if (err)
 566                 en_warn(priv, "Failed Attaching Unicast\n");
 567
 568         return err;
 569 }
 570
 571 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 572                                      unsigned char *mac, int qpn, u64 reg_id)
 573 {
 574         struct mlx4_en_dev *mdev = priv->mdev;
 575         struct mlx4_dev *dev = mdev->dev;
 576
 577         switch (dev->caps.steering_mode) {
 578         case MLX4_STEERING_MODE_B0: {
 579                 struct mlx4_qp qp;
 580                 u8 gid[16] = {0};
 581
 582                 qp.qpn = qpn;
 583                 memcpy(&gid[10], mac, ETH_ALEN);
 584                 gid[5] = priv->port;
 585
 586                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 587                 break;
 588         }
 589         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 590                 mlx4_flow_detach(dev, reg_id);
 591                 break;
 592         }
 593         default:
 594                 en_err(priv, "Invalid steering mode.\n");
 595         }
 596 }
 597
 598 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 599 {
 600         struct mlx4_en_dev *mdev = priv->mdev;
 601         struct mlx4_dev *dev = mdev->dev;
 602         struct mlx4_mac_entry *entry;
 603         int index = 0;
 604         int err = 0;
 605         u64 reg_id;
 606         int *qpn = &priv->base_qpn;
 607         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 608
 609         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 610                priv->dev->dev_addr);
 611         index = mlx4_register_mac(dev, priv->port, mac);
 612         if (index < 0) {
 613                 err = index;
 614                 en_err(priv, "Failed adding MAC: %pM\n",
 615                        priv->dev->dev_addr);
 616                 return err;
 617         }
 618
 619         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 620                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 621                 *qpn = base_qpn + index;
 622                 return 0;
 623         }
 624
 625         err = mlx4_qp_reserve_range(dev, 1, 1, qpn);
 626         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 627         if (err) {
 628                 en_err(priv, "Failed to reserve qp for mac registration\n");
 629                 goto qp_err;
 630         }
 631
 632         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
 633         if (err)
 634                 goto steer_err;
 635
 636         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
 637                                        &priv->tunnel_reg_id);
 638         if (err)
 639                 goto tunnel_err;
 640
 641         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
 642         if (!entry) {
 643                 err = -ENOMEM;
 644                 goto alloc_err;
 645         }
 646         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
 647         entry->reg_id = reg_id;
 648
 649         hlist_add_head_rcu(&entry->hlist,
 650                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
 651
 652         return 0;
 653
 654 alloc_err:
 655         if (priv->tunnel_reg_id)
 656                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 657 tunnel_err:
 658         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
 659
 660 steer_err:
 661         mlx4_qp_release_range(dev, *qpn, 1);
 662
 663 qp_err:
 664         mlx4_unregister_mac(dev, priv->port, mac);
 665         return err;
 666 }
 667
 668 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 669 {
 670         struct mlx4_en_dev *mdev = priv->mdev;
 671         struct mlx4_dev *dev = mdev->dev;
 672         int qpn = priv->base_qpn;
 673         u64 mac;
 674
 675         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 676                 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 677                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 678                        priv->dev->dev_addr);
 679                 mlx4_unregister_mac(dev, priv->port, mac);
 680         } else {
 681                 struct mlx4_mac_entry *entry;
 682                 struct hlist_node *tmp;
 683                 struct hlist_head *bucket;
 684                 unsigned int i;
 685
 686                 for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
 687                         bucket = &priv->mac_hash[i];
 688                         hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 689                                 mac = mlx4_mac_to_u64(entry->mac);
 690                                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 691                                        entry->mac);
 692                                 mlx4_en_uc_steer_release(priv, entry->mac,
 693                                                          qpn, entry->reg_id);
 694
 695                                 mlx4_unregister_mac(dev, priv->port, mac);
 696                                 hlist_del_rcu(&entry->hlist);
 697                                 kfree_rcu(entry, rcu);
 698                         }
 699                 }
 700
 701                 if (priv->tunnel_reg_id) {
 702                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 703                         priv->tunnel_reg_id = 0;
 704                 }
 705
 706                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 707                        priv->port, qpn);
 708                 mlx4_qp_release_range(dev, qpn, 1);
 709                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 710         }
 711 }
 712
 713 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 714                                unsigned char *new_mac, unsigned char *prev_mac)
 715 {
 716         struct mlx4_en_dev *mdev = priv->mdev;
 717         struct mlx4_dev *dev = mdev->dev;
 718         int err = 0;
 719         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 720
 721         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 722                 struct hlist_head *bucket;
 723                 unsigned int mac_hash;
 724                 struct mlx4_mac_entry *entry;
 725                 struct hlist_node *tmp;
 726                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 727
 728                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 729                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 730                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 731                                 mlx4_en_uc_steer_release(priv, entry->mac,
 732                                                          qpn, entry->reg_id);
 733                                 mlx4_unregister_mac(dev, priv->port,
 734                                                     prev_mac_u64);
 735                                 hlist_del_rcu(&entry->hlist);
 736                                 synchronize_rcu();
 737                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 738                                 entry->reg_id = 0;
 739                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 740                                 hlist_add_head_rcu(&entry->hlist,
 741                                                    &priv->mac_hash[mac_hash]);
 742                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 743                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 744                                                            &qpn,
 745                                                            &entry->reg_id);
 746                                 if (err)
 747                                         return err;
 748                                 if (priv->tunnel_reg_id) {
 749                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 750                                         priv->tunnel_reg_id = 0;
 751                                 }
 752                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 753                                                                &priv->tunnel_reg_id);
 754                                 return err;
 755                         }
 756                 }
 757                 return -EINVAL;
 758         }
 759
 760         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 761 }
 762
 763 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv)
 764 {
 765         int err = 0;
 766
 767         if (priv->port_up) {
 768                 /* Remove old MAC and insert the new one */
 769                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 770                                           priv->dev->dev_addr, priv->prev_mac);
 771                 if (err)
 772                         en_err(priv, "Failed changing HW MAC address\n");
 773         } else
 774                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 775
 776         memcpy(priv->prev_mac, priv->dev->dev_addr,
 777                sizeof(priv->prev_mac));
 778
 779         return err;
 780 }
 781
 782 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 783 {
 784         struct mlx4_en_priv *priv = netdev_priv(dev);
 785         struct mlx4_en_dev *mdev = priv->mdev;
 786         struct sockaddr *saddr = addr;
 787         int err;
 788
 789         if (!is_valid_ether_addr(saddr->sa_data))
 790                 return -EADDRNOTAVAIL;
 791
 792         mutex_lock(&mdev->state_lock);
 793         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 794         err = mlx4_en_do_set_mac(priv);
 795         mutex_unlock(&mdev->state_lock);
 796
 797         return err;
 798 }
 799
 800 static void mlx4_en_clear_list(struct net_device *dev)
 801 {
 802         struct mlx4_en_priv *priv = netdev_priv(dev);
 803         struct mlx4_en_mc_list *tmp, *mc_to_del;
 804
 805         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 806                 list_del(&mc_to_del->list);
 807                 kfree(mc_to_del);
 808         }
 809 }
 810
 811 static void mlx4_en_cache_mclist(struct net_device *dev)
 812 {
 813         struct mlx4_en_priv *priv = netdev_priv(dev);
 814         struct netdev_hw_addr *ha;
 815         struct mlx4_en_mc_list *tmp;
 816
 817         mlx4_en_clear_list(dev);
 818         netdev_for_each_mc_addr(ha, dev) {
 819                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 820                 if (!tmp) {
 821                         mlx4_en_clear_list(dev);
 822                         return;
 823                 }
 824                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 825                 list_add_tail(&tmp->list, &priv->mc_list);
 826         }
 827 }
 828
 829 static void update_mclist_flags(struct mlx4_en_priv *priv,
 830                                 struct list_head *dst,
 831                                 struct list_head *src)
 832 {
 833         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 834         bool found;
 835
 836         /* Find all the entries that should be removed from dst,
 837          * These are the entries that are not found in src
 838          */
 839         list_for_each_entry(dst_tmp, dst, list) {
 840                 found = false;
 841                 list_for_each_entry(src_tmp, src, list) {
 842                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 843                                 found = true;
 844                                 break;
 845                         }
 846                 }
 847                 if (!found)
 848                         dst_tmp->action = MCLIST_REM;
 849         }
 850
 851         /* Add entries that exist in src but not in dst
 852          * mark them as need to add
 853          */
 854         list_for_each_entry(src_tmp, src, list) {
 855                 found = false;
 856                 list_for_each_entry(dst_tmp, dst, list) {
 857                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 858                                 dst_tmp->action = MCLIST_NONE;
 859                                 found = true;
 860                                 break;
 861                         }
 862                 }
 863                 if (!found) {
 864                         new_mc = kmemdup(src_tmp,
 865                                          sizeof(struct mlx4_en_mc_list),
 866                                          GFP_KERNEL);
 867                         if (!new_mc)
 868                                 return;
 869
 870                         new_mc->action = MCLIST_ADD;
 871                         list_add_tail(&new_mc->list, dst);
 872                 }
 873         }
 874 }
 875
 876 static void mlx4_en_set_rx_mode(struct net_device *dev)
 877 {
 878         struct mlx4_en_priv *priv = netdev_priv(dev);
 879
 880         if (!priv->port_up)
 881                 return;
 882
 883         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 884 }
 885
 886 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 887                                      struct mlx4_en_dev *mdev)
 888 {
 889         int err = 0;
 890
 891         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 892                 if (netif_msg_rx_status(priv))
 893                         en_warn(priv, "Entering promiscuous mode\n");
 894                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 895
 896                 /* Enable promiscouos mode */
 897                 switch (mdev->dev->caps.steering_mode) {
 898                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 899                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 900                                                           priv->port,
 901                                                           priv->base_qpn,
 902                                                           MLX4_FS_ALL_DEFAULT);
 903                         if (err)
 904                                 en_err(priv, "Failed enabling promiscuous mode\n");
 905                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 906                         break;
 907
 908                 case MLX4_STEERING_MODE_B0:
 909                         err = mlx4_unicast_promisc_add(mdev->dev,
 910                                                        priv->base_qpn,
 911                                                        priv->port);
 912                         if (err)
 913                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 914
 915                         /* Add the default qp number as multicast
 916                          * promisc
 917                          */
 918                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 919                                 err = mlx4_multicast_promisc_add(mdev->dev,
 920                                                                  priv->base_qpn,
 921                                                                  priv->port);
 922                                 if (err)
 923                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 924                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 925                         }
 926                         break;
 927
 928                 case MLX4_STEERING_MODE_A0:
 929                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 930                                                      priv->port,
 931                                                      priv->base_qpn,
 932                                                      1);
 933                         if (err)
 934                                 en_err(priv, "Failed enabling promiscuous mode\n");
 935                         break;
 936                 }
 937
 938                 /* Disable port multicast filter (unconditionally) */
 939                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 940                                           0, MLX4_MCAST_DISABLE);
 941                 if (err)
 942                         en_err(priv, "Failed disabling multicast filter\n");
 943
 944                 /* Disable port VLAN filter */
 945                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 946                 if (err)
 947                         en_err(priv, "Failed disabling VLAN filter\n");
 948         }
 949 }
 950
 951 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 952                                        struct mlx4_en_dev *mdev)
 953 {
 954         int err = 0;
 955
 956         if (netif_msg_rx_status(priv))
 957                 en_warn(priv, "Leaving promiscuous mode\n");
 958         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 959
 960         /* Disable promiscouos mode */
 961         switch (mdev->dev->caps.steering_mode) {
 962         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 963                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 964                                                      priv->port,
 965                                                      MLX4_FS_ALL_DEFAULT);
 966                 if (err)
 967                         en_err(priv, "Failed disabling promiscuous mode\n");
 968                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 969                 break;
 970
 971         case MLX4_STEERING_MODE_B0:
 972                 err = mlx4_unicast_promisc_remove(mdev->dev,
 973                                                   priv->base_qpn,
 974                                                   priv->port);
 975                 if (err)
 976                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 977                 /* Disable Multicast promisc */
 978                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 979                         err = mlx4_multicast_promisc_remove(mdev->dev,
 980                                                             priv->base_qpn,
 981                                                             priv->port);
 982                         if (err)
 983                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 984                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 985                 }
 986                 break;
 987
 988         case MLX4_STEERING_MODE_A0:
 989                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 990                                              priv->port,
 991                                              priv->base_qpn, 0);
 992                 if (err)
 993                         en_err(priv, "Failed disabling promiscuous mode\n");
 994                 break;
 995         }
 996
 997         /* Enable port VLAN filter */
 998         err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 999         if (err)
1000                 en_err(priv, "Failed enabling VLAN filter\n");
1001 }
1002
1003 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
1004                                  struct net_device *dev,
1005                                  struct mlx4_en_dev *mdev)
1006 {
1007         struct mlx4_en_mc_list *mclist, *tmp;
1008         u64 mcast_addr = 0;
1009         u8 mc_list[16] = {0};
1010         int err = 0;
1011
1012         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
1013         if (dev->flags & IFF_ALLMULTI) {
1014                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1015                                           0, MLX4_MCAST_DISABLE);
1016                 if (err)
1017                         en_err(priv, "Failed disabling multicast filter\n");
1018
1019                 /* Add the default qp number as multicast promisc */
1020                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1021                         switch (mdev->dev->caps.steering_mode) {
1022                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1023                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1024                                                                   priv->port,
1025                                                                   priv->base_qpn,
1026                                                                   MLX4_FS_MC_DEFAULT);
1027                                 break;
1028
1029                         case MLX4_STEERING_MODE_B0:
1030                                 err = mlx4_multicast_promisc_add(mdev->dev,
1031                                                                  priv->base_qpn,
1032                                                                  priv->port);
1033                                 break;
1034
1035                         case MLX4_STEERING_MODE_A0:
1036                                 break;
1037                         }
1038                         if (err)
1039                                 en_err(priv, "Failed entering multicast promisc mode\n");
1040                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1041                 }
1042         } else {
1043                 /* Disable Multicast promisc */
1044                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1045                         switch (mdev->dev->caps.steering_mode) {
1046                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1047                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1048                                                                      priv->port,
1049                                                                      MLX4_FS_MC_DEFAULT);
1050                                 break;
1051
1052                         case MLX4_STEERING_MODE_B0:
1053                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1054                                                                     priv->base_qpn,
1055                                                                     priv->port);
1056                                 break;
1057
1058                         case MLX4_STEERING_MODE_A0:
1059                                 break;
1060                         }
1061                         if (err)
1062                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1063                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1064                 }
1065
1066                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1067                                           0, MLX4_MCAST_DISABLE);
1068                 if (err)
1069                         en_err(priv, "Failed disabling multicast filter\n");
1070
1071                 /* Flush mcast filter and init it with broadcast address */
1072                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1073                                     1, MLX4_MCAST_CONFIG);
1074
1075                 /* Update multicast list - we cache all addresses so they won't
1076                  * change while HW is updated holding the command semaphor */
1077                 netif_addr_lock_bh(dev);
1078                 mlx4_en_cache_mclist(dev);
1079                 netif_addr_unlock_bh(dev);
1080                 list_for_each_entry(mclist, &priv->mc_list, list) {
1081                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
1082                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1083                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1084                 }
1085                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1086                                           0, MLX4_MCAST_ENABLE);
1087                 if (err)
1088                         en_err(priv, "Failed enabling multicast filter\n");
1089
1090                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1091                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1092                         if (mclist->action == MCLIST_REM) {
1093                                 /* detach this address and delete from list */
1094                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1095                                 mc_list[5] = priv->port;
1096                                 err = mlx4_multicast_detach(mdev->dev,
1097                                                             &priv->rss_map.indir_qp,
1098                                                             mc_list,
1099                                                             MLX4_PROT_ETH,
1100                                                             mclist->reg_id);
1101                                 if (err)
1102                                         en_err(priv, "Fail to detach multicast address\n");
1103
1104                                 if (mclist->tunnel_reg_id) {
1105                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1106                                         if (err)
1107                                                 en_err(priv, "Failed to detach multicast address\n");
1108                                 }
1109
1110                                 /* remove from list */
1111                                 list_del(&mclist->list);
1112                                 kfree(mclist);
1113                         } else if (mclist->action == MCLIST_ADD) {
1114                                 /* attach the address */
1115                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1116                                 /* needed for B0 steering support */
1117                                 mc_list[5] = priv->port;
1118                                 err = mlx4_multicast_attach(mdev->dev,
1119                                                             &priv->rss_map.indir_qp,
1120                                                             mc_list,
1121                                                             priv->port, 0,
1122                                                             MLX4_PROT_ETH,
1123                                                             &mclist->reg_id);
1124                                 if (err)
1125                                         en_err(priv, "Fail to attach multicast address\n");
1126
1127                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1128                                                                &mclist->tunnel_reg_id);
1129                                 if (err)
1130                                         en_err(priv, "Failed to attach multicast address\n");
1131                         }
1132                 }
1133         }
1134 }
1135
1136 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1137                                  struct net_device *dev,
1138                                  struct mlx4_en_dev *mdev)
1139 {
1140         struct netdev_hw_addr *ha;
1141         struct mlx4_mac_entry *entry;
1142         struct hlist_node *tmp;
1143         bool found;
1144         u64 mac;
1145         int err = 0;
1146         struct hlist_head *bucket;
1147         unsigned int i;
1148         int removed = 0;
1149         u32 prev_flags;
1150
1151         /* Note that we do not need to protect our mac_hash traversal with rcu,
1152          * since all modification code is protected by mdev->state_lock
1153          */
1154
1155         /* find what to remove */
1156         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1157                 bucket = &priv->mac_hash[i];
1158                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1159                         found = false;
1160                         netdev_for_each_uc_addr(ha, dev) {
1161                                 if (ether_addr_equal_64bits(entry->mac,
1162                                                             ha->addr)) {
1163                                         found = true;
1164                                         break;
1165                                 }
1166                         }
1167
1168                         /* MAC address of the port is not in uc list */
1169                         if (ether_addr_equal_64bits(entry->mac, dev->dev_addr))
1170                                 found = true;
1171
1172                         if (!found) {
1173                                 mac = mlx4_mac_to_u64(entry->mac);
1174                                 mlx4_en_uc_steer_release(priv, entry->mac,
1175                                                          priv->base_qpn,
1176                                                          entry->reg_id);
1177                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1178
1179                                 hlist_del_rcu(&entry->hlist);
1180                                 kfree_rcu(entry, rcu);
1181                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1182                                        entry->mac, priv->port);
1183                                 ++removed;
1184                         }
1185                 }
1186         }
1187
1188         /* if we didn't remove anything, there is no use in trying to add
1189          * again once we are in a forced promisc mode state
1190          */
1191         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1192                 return;
1193
1194         prev_flags = priv->flags;
1195         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1196
1197         /* find what to add */
1198         netdev_for_each_uc_addr(ha, dev) {
1199                 found = false;
1200                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1201                 hlist_for_each_entry(entry, bucket, hlist) {
1202                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1203                                 found = true;
1204                                 break;
1205                         }
1206                 }
1207
1208                 if (!found) {
1209                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1210                         if (!entry) {
1211                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1212                                        ha->addr, priv->port);
1213                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1214                                 break;
1215                         }
1216                         mac = mlx4_mac_to_u64(ha->addr);
1217                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1218                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1219                         if (err < 0) {
1220                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1221                                        ha->addr, priv->port, err);
1222                                 kfree(entry);
1223                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1224                                 break;
1225                         }
1226                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1227                                                    &priv->base_qpn,
1228                                                    &entry->reg_id);
1229                         if (err) {
1230                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1231                                        ha->addr, priv->port, err);
1232                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1233                                 kfree(entry);
1234                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1235                                 break;
1236                         } else {
1237                                 unsigned int mac_hash;
1238                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1239                                        ha->addr, priv->port);
1240                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1241                                 bucket = &priv->mac_hash[mac_hash];
1242                                 hlist_add_head_rcu(&entry->hlist, bucket);
1243                         }
1244                 }
1245         }
1246
1247         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1248                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1249                         priv->port);
1250         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1251                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1252                         priv->port);
1253         }
1254 }
1255
1256 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1257 {
1258         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1259                                                  rx_mode_task);
1260         struct mlx4_en_dev *mdev = priv->mdev;
1261         struct net_device *dev = priv->dev;
1262
1263         mutex_lock(&mdev->state_lock);
1264         if (!mdev->device_up) {
1265                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1266                 goto out;
1267         }
1268         if (!priv->port_up) {
1269                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1270                 goto out;
1271         }
1272
1273         if (!netif_carrier_ok(dev)) {
1274                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1275                         if (priv->port_state.link_state) {
1276                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1277                                 netif_carrier_on(dev);
1278                                 en_dbg(LINK, priv, "Link Up\n");
1279                         }
1280                 }
1281         }
1282
1283         if (dev->priv_flags & IFF_UNICAST_FLT)
1284                 mlx4_en_do_uc_filter(priv, dev, mdev);
1285
1286         /* Promsicuous mode: disable all filters */
1287         if ((dev->flags & IFF_PROMISC) ||
1288             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1289                 mlx4_en_set_promisc_mode(priv, mdev);
1290                 goto out;
1291         }
1292
1293         /* Not in promiscuous mode */
1294         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1295                 mlx4_en_clear_promisc_mode(priv, mdev);
1296
1297         mlx4_en_do_multicast(priv, dev, mdev);
1298 out:
1299         mutex_unlock(&mdev->state_lock);
1300 }
1301
1302 #ifdef CONFIG_NET_POLL_CONTROLLER
1303 static void mlx4_en_netpoll(struct net_device *dev)
1304 {
1305         struct mlx4_en_priv *priv = netdev_priv(dev);
1306         struct mlx4_en_cq *cq;
1307         int i;
1308
1309         for (i = 0; i < priv->rx_ring_num; i++) {
1310                 cq = priv->rx_cq[i];
1311                 napi_schedule(&cq->napi);
1312         }
1313 }
1314 #endif
1315
1316 static void mlx4_en_tx_timeout(struct net_device *dev)
1317 {
1318         struct mlx4_en_priv *priv = netdev_priv(dev);
1319         struct mlx4_en_dev *mdev = priv->mdev;
1320         int i;
1321
1322         if (netif_msg_timer(priv))
1323                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1324
1325         for (i = 0; i < priv->tx_ring_num; i++) {
1326                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1327                         continue;
1328                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1329                         i, priv->tx_ring[i]->qpn, priv->tx_ring[i]->cqn,
1330                         priv->tx_ring[i]->cons, priv->tx_ring[i]->prod);
1331         }
1332
1333         priv->port_stats.tx_timeout++;
1334         en_dbg(DRV, priv, "Scheduling watchdog\n");
1335         queue_work(mdev->workqueue, &priv->watchdog_task);
1336 }
1337
1338
1339 static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
1340 {
1341         struct mlx4_en_priv *priv = netdev_priv(dev);
1342
1343         spin_lock_bh(&priv->stats_lock);
1344         memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
1345         spin_unlock_bh(&priv->stats_lock);
1346
1347         return &priv->ret_stats;
1348 }
1349
1350 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1351 {
1352         struct mlx4_en_cq *cq;
1353         int i;
1354
1355         /* If we haven't received a specific coalescing setting
1356          * (module param), we set the moderation parameters as follows:
1357          * - moder_cnt is set to the number of mtu sized packets to
1358          *   satisfy our coalescing target.
1359          * - moder_time is set to a fixed value.
1360          */
1361         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1362         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1363         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1364         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1365         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1366                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1367
1368         /* Setup cq moderation params */
1369         for (i = 0; i < priv->rx_ring_num; i++) {
1370                 cq = priv->rx_cq[i];
1371                 cq->moder_cnt = priv->rx_frames;
1372                 cq->moder_time = priv->rx_usecs;
1373                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1374                 priv->last_moder_packets[i] = 0;
1375                 priv->last_moder_bytes[i] = 0;
1376         }
1377
1378         for (i = 0; i < priv->tx_ring_num; i++) {
1379                 cq = priv->tx_cq[i];
1380                 cq->moder_cnt = priv->tx_frames;
1381                 cq->moder_time = priv->tx_usecs;
1382         }
1383
1384         /* Reset auto-moderation params */
1385         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1386         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1387         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1388         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1389         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1390         priv->adaptive_rx_coal = 1;
1391         priv->last_moder_jiffies = 0;
1392         priv->last_moder_tx_packets = 0;
1393 }
1394
1395 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1396 {
1397         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1398         struct mlx4_en_cq *cq;
1399         unsigned long packets;
1400         unsigned long rate;
1401         unsigned long avg_pkt_size;
1402         unsigned long rx_packets;
1403         unsigned long rx_bytes;
1404         unsigned long rx_pkt_diff;
1405         int moder_time;
1406         int ring, err;
1407
1408         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1409                 return;
1410
1411         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1412                 spin_lock_bh(&priv->stats_lock);
1413                 rx_packets = priv->rx_ring[ring]->packets;
1414                 rx_bytes = priv->rx_ring[ring]->bytes;
1415                 spin_unlock_bh(&priv->stats_lock);
1416
1417                 rx_pkt_diff = ((unsigned long) (rx_packets -
1418                                 priv->last_moder_packets[ring]));
1419                 packets = rx_pkt_diff;
1420                 rate = packets * HZ / period;
1421                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1422                                 priv->last_moder_bytes[ring])) / packets : 0;
1423
1424                 /* Apply auto-moderation only when packet rate
1425                  * exceeds a rate that it matters */
1426                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1427                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1428                         if (rate < priv->pkt_rate_low)
1429                                 moder_time = priv->rx_usecs_low;
1430                         else if (rate > priv->pkt_rate_high)
1431                                 moder_time = priv->rx_usecs_high;
1432                         else
1433                                 moder_time = (rate - priv->pkt_rate_low) *
1434                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1435                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1436                                         priv->rx_usecs_low;
1437                 } else {
1438                         moder_time = priv->rx_usecs_low;
1439                 }
1440
1441                 if (moder_time != priv->last_moder_time[ring]) {
1442                         priv->last_moder_time[ring] = moder_time;
1443                         cq = priv->rx_cq[ring];
1444                         cq->moder_time = moder_time;
1445                         cq->moder_cnt = priv->rx_frames;
1446                         err = mlx4_en_set_cq_moder(priv, cq);
1447                         if (err)
1448                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1449                                        ring);
1450                 }
1451                 priv->last_moder_packets[ring] = rx_packets;
1452                 priv->last_moder_bytes[ring] = rx_bytes;
1453         }
1454
1455         priv->last_moder_jiffies = jiffies;
1456 }
1457
1458 static void mlx4_en_do_get_stats(struct work_struct *work)
1459 {
1460         struct delayed_work *delay = to_delayed_work(work);
1461         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1462                                                  stats_task);
1463         struct mlx4_en_dev *mdev = priv->mdev;
1464         int err;
1465
1466         mutex_lock(&mdev->state_lock);
1467         if (mdev->device_up) {
1468                 if (priv->port_up) {
1469                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1470                         if (err)
1471                                 en_dbg(HW, priv, "Could not update stats\n");
1472
1473                         mlx4_en_auto_moderation(priv);
1474                 }
1475
1476                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1477         }
1478         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1479                 mlx4_en_do_set_mac(priv);
1480                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1481         }
1482         mutex_unlock(&mdev->state_lock);
1483 }
1484
1485 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1486  * periodically
1487  */
1488 static void mlx4_en_service_task(struct work_struct *work)
1489 {
1490         struct delayed_work *delay = to_delayed_work(work);
1491         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1492                                                  service_task);
1493         struct mlx4_en_dev *mdev = priv->mdev;
1494
1495         mutex_lock(&mdev->state_lock);
1496         if (mdev->device_up) {
1497                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1498                         mlx4_en_ptp_overflow_check(mdev);
1499
1500                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1501                                    SERVICE_TASK_DELAY);
1502         }
1503         mutex_unlock(&mdev->state_lock);
1504 }
1505
1506 static void mlx4_en_linkstate(struct work_struct *work)
1507 {
1508         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1509                                                  linkstate_task);
1510         struct mlx4_en_dev *mdev = priv->mdev;
1511         int linkstate = priv->link_state;
1512
1513         mutex_lock(&mdev->state_lock);
1514         /* If observable port state changed set carrier state and
1515          * report to system log */
1516         if (priv->last_link_state != linkstate) {
1517                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1518                         en_info(priv, "Link Down\n");
1519                         netif_carrier_off(priv->dev);
1520                 } else {
1521                         en_info(priv, "Link Up\n");
1522                         netif_carrier_on(priv->dev);
1523                 }
1524         }
1525         priv->last_link_state = linkstate;
1526         mutex_unlock(&mdev->state_lock);
1527 }
1528
1529 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1530 {
1531         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1532         int numa_node = priv->mdev->dev->numa_node;
1533         int ret = 0;
1534
1535         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1536                 return -ENOMEM;
1537
1538         ret = cpumask_set_cpu_local_first(ring_idx, numa_node,
1539                                           ring->affinity_mask);
1540         if (ret)
1541                 free_cpumask_var(ring->affinity_mask);
1542
1543         return ret;
1544 }
1545
1546 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1547 {
1548         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1549 }
1550
1551 int mlx4_en_start_port(struct net_device *dev)
1552 {
1553         struct mlx4_en_priv *priv = netdev_priv(dev);
1554         struct mlx4_en_dev *mdev = priv->mdev;
1555         struct mlx4_en_cq *cq;
1556         struct mlx4_en_tx_ring *tx_ring;
1557         int rx_index = 0;
1558         int tx_index = 0;
1559         int err = 0;
1560         int i;
1561         int j;
1562         u8 mc_list[16] = {0};
1563
1564         if (priv->port_up) {
1565                 en_dbg(DRV, priv, "start port called while port already up\n");
1566                 return 0;
1567         }
1568
1569         INIT_LIST_HEAD(&priv->mc_list);
1570         INIT_LIST_HEAD(&priv->curr_list);
1571         INIT_LIST_HEAD(&priv->ethtool_list);
1572         memset(&priv->ethtool_rules[0], 0,
1573                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1574
1575         /* Calculate Rx buf size */
1576         dev->mtu = min(dev->mtu, priv->max_mtu);
1577         mlx4_en_calc_rx_buf(dev);
1578         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1579
1580         /* Configure rx cq's and rings */
1581         err = mlx4_en_activate_rx_rings(priv);
1582         if (err) {
1583                 en_err(priv, "Failed to activate RX rings\n");
1584                 return err;
1585         }
1586         for (i = 0; i < priv->rx_ring_num; i++) {
1587                 cq = priv->rx_cq[i];
1588
1589                 mlx4_en_cq_init_lock(cq);
1590
1591                 err = mlx4_en_init_affinity_hint(priv, i);
1592                 if (err) {
1593                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1594                         goto cq_err;
1595                 }
1596
1597                 err = mlx4_en_activate_cq(priv, cq, i);
1598                 if (err) {
1599                         en_err(priv, "Failed activating Rx CQ\n");
1600                         mlx4_en_free_affinity_hint(priv, i);
1601                         goto cq_err;
1602                 }
1603                 for (j = 0; j < cq->size; j++)
1604                         cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1605                 err = mlx4_en_set_cq_moder(priv, cq);
1606                 if (err) {
1607                         en_err(priv, "Failed setting cq moderation parameters\n");
1608                         mlx4_en_deactivate_cq(priv, cq);
1609                         mlx4_en_free_affinity_hint(priv, i);
1610                         goto cq_err;
1611                 }
1612                 mlx4_en_arm_cq(priv, cq);
1613                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1614                 ++rx_index;
1615         }
1616
1617         /* Set qp number */
1618         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1619         err = mlx4_en_get_qp(priv);
1620         if (err) {
1621                 en_err(priv, "Failed getting eth qp\n");
1622                 goto cq_err;
1623         }
1624         mdev->mac_removed[priv->port] = 0;
1625
1626         err = mlx4_en_config_rss_steer(priv);
1627         if (err) {
1628                 en_err(priv, "Failed configuring rss steering\n");
1629                 goto mac_err;
1630         }
1631
1632         err = mlx4_en_create_drop_qp(priv);
1633         if (err)
1634                 goto rss_err;
1635
1636         /* Configure tx cq's and rings */
1637         for (i = 0; i < priv->tx_ring_num; i++) {
1638                 /* Configure cq */
1639                 cq = priv->tx_cq[i];
1640                 err = mlx4_en_activate_cq(priv, cq, i);
1641                 if (err) {
1642                         en_err(priv, "Failed allocating Tx CQ\n");
1643                         goto tx_err;
1644                 }
1645                 err = mlx4_en_set_cq_moder(priv, cq);
1646                 if (err) {
1647                         en_err(priv, "Failed setting cq moderation parameters\n");
1648                         mlx4_en_deactivate_cq(priv, cq);
1649                         goto tx_err;
1650                 }
1651                 en_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
1652                 cq->buf->wqe_index = cpu_to_be16(0xffff);
1653
1654                 /* Configure ring */
1655                 tx_ring = priv->tx_ring[i];
1656                 err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
1657                         i / priv->num_tx_rings_p_up);
1658                 if (err) {
1659                         en_err(priv, "Failed allocating Tx ring\n");
1660                         mlx4_en_deactivate_cq(priv, cq);
1661                         goto tx_err;
1662                 }
1663                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1664
1665                 /* Arm CQ for TX completions */
1666                 mlx4_en_arm_cq(priv, cq);
1667
1668                 /* Set initial ownership of all Tx TXBBs to SW (1) */
1669                 for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1670                         *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
1671                 ++tx_index;
1672         }
1673
1674         /* Configure port */
1675         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1676                                     priv->rx_skb_size + ETH_FCS_LEN,
1677                                     priv->prof->tx_pause,
1678                                     priv->prof->tx_ppp,
1679                                     priv->prof->rx_pause,
1680                                     priv->prof->rx_ppp);
1681         if (err) {
1682                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1683                        priv->port, err);
1684                 goto tx_err;
1685         }
1686         /* Set default qp number */
1687         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1688         if (err) {
1689                 en_err(priv, "Failed setting default qp numbers\n");
1690                 goto tx_err;
1691         }
1692
1693         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1694                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1695                 if (err) {
1696                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1697                                err);
1698                         goto tx_err;
1699                 }
1700         }
1701
1702         /* Init port */
1703         en_dbg(HW, priv, "Initializing port\n");
1704         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1705         if (err) {
1706                 en_err(priv, "Failed Initializing port\n");
1707                 goto tx_err;
1708         }
1709
1710         /* Attach rx QP to bradcast address */
1711         memset(&mc_list[10], 0xff, ETH_ALEN);
1712         mc_list[5] = priv->port; /* needed for B0 steering support */
1713         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1714                                   priv->port, 0, MLX4_PROT_ETH,
1715                                   &priv->broadcast_id))
1716                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1717
1718         /* Must redo promiscuous mode setup. */
1719         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1720
1721         /* Schedule multicast task to populate multicast list */
1722         queue_work(mdev->workqueue, &priv->rx_mode_task);
1723
1724         mlx4_set_stats_bitmap(mdev->dev, &priv->stats_bitmap);
1725
1726 #ifdef CONFIG_MLX4_EN_VXLAN
1727         if (priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS)
1728                 vxlan_get_rx_port(dev);
1729 #endif
1730         priv->port_up = true;
1731         netif_tx_start_all_queues(dev);
1732         netif_device_attach(dev);
1733
1734         return 0;
1735
1736 tx_err:
1737         while (tx_index--) {
1738                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[tx_index]);
1739                 mlx4_en_deactivate_cq(priv, priv->tx_cq[tx_index]);
1740         }
1741         mlx4_en_destroy_drop_qp(priv);
1742 rss_err:
1743         mlx4_en_release_rss_steer(priv);
1744 mac_err:
1745         mlx4_en_put_qp(priv);
1746 cq_err:
1747         while (rx_index--) {
1748                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1749                 mlx4_en_free_affinity_hint(priv, i);
1750         }
1751         for (i = 0; i < priv->rx_ring_num; i++)
1752                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1753
1754         return err; /* need to close devices */
1755 }
1756
1757
1758 void mlx4_en_stop_port(struct net_device *dev, int detach)
1759 {
1760         struct mlx4_en_priv *priv = netdev_priv(dev);
1761         struct mlx4_en_dev *mdev = priv->mdev;
1762         struct mlx4_en_mc_list *mclist, *tmp;
1763         struct ethtool_flow_id *flow, *tmp_flow;
1764         int i;
1765         u8 mc_list[16] = {0};
1766
1767         if (!priv->port_up) {
1768                 en_dbg(DRV, priv, "stop port called while port already down\n");
1769                 return;
1770         }
1771
1772         /* close port*/
1773         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1774
1775         /* Synchronize with tx routine */
1776         netif_tx_lock_bh(dev);
1777         if (detach)
1778                 netif_device_detach(dev);
1779         netif_tx_stop_all_queues(dev);
1780         netif_tx_unlock_bh(dev);
1781
1782         netif_tx_disable(dev);
1783
1784         /* Set port as not active */
1785         priv->port_up = false;
1786
1787         /* Promsicuous mode */
1788         if (mdev->dev->caps.steering_mode ==
1789             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1790                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1791                                  MLX4_EN_FLAG_MC_PROMISC);
1792                 mlx4_flow_steer_promisc_remove(mdev->dev,
1793                                                priv->port,
1794                                                MLX4_FS_ALL_DEFAULT);
1795                 mlx4_flow_steer_promisc_remove(mdev->dev,
1796                                                priv->port,
1797                                                MLX4_FS_MC_DEFAULT);
1798         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1799                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1800
1801                 /* Disable promiscouos mode */
1802                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1803                                             priv->port);
1804
1805                 /* Disable Multicast promisc */
1806                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1807                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1808                                                       priv->port);
1809                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1810                 }
1811         }
1812
1813         /* Detach All multicasts */
1814         memset(&mc_list[10], 0xff, ETH_ALEN);
1815         mc_list[5] = priv->port; /* needed for B0 steering support */
1816         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1817                               MLX4_PROT_ETH, priv->broadcast_id);
1818         list_for_each_entry(mclist, &priv->curr_list, list) {
1819                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1820                 mc_list[5] = priv->port;
1821                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1822                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1823                 if (mclist->tunnel_reg_id)
1824                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1825         }
1826         mlx4_en_clear_list(dev);
1827         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1828                 list_del(&mclist->list);
1829                 kfree(mclist);
1830         }
1831
1832         /* Flush multicast filter */
1833         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1834
1835         /* Remove flow steering rules for the port*/
1836         if (mdev->dev->caps.steering_mode ==
1837             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1838                 ASSERT_RTNL();
1839                 list_for_each_entry_safe(flow, tmp_flow,
1840                                          &priv->ethtool_list, list) {
1841                         mlx4_flow_detach(mdev->dev, flow->id);
1842                         list_del(&flow->list);
1843                 }
1844         }
1845
1846         mlx4_en_destroy_drop_qp(priv);
1847
1848         /* Free TX Rings */
1849         for (i = 0; i < priv->tx_ring_num; i++) {
1850                 mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[i]);
1851                 mlx4_en_deactivate_cq(priv, priv->tx_cq[i]);
1852         }
1853         msleep(10);
1854
1855         for (i = 0; i < priv->tx_ring_num; i++)
1856                 mlx4_en_free_tx_buf(dev, priv->tx_ring[i]);
1857
1858         /* Free RSS qps */
1859         mlx4_en_release_rss_steer(priv);
1860
1861         /* Unregister Mac address for the port */
1862         mlx4_en_put_qp(priv);
1863         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1864                 mdev->mac_removed[priv->port] = 1;
1865
1866         /* Free RX Rings */
1867         for (i = 0; i < priv->rx_ring_num; i++) {
1868                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1869
1870                 local_bh_disable();
1871                 while (!mlx4_en_cq_lock_napi(cq)) {
1872                         pr_info("CQ %d locked\n", i);
1873                         mdelay(1);
1874                 }
1875                 local_bh_enable();
1876
1877                 while (test_bit(NAPI_STATE_SCHED, &cq->napi.state))
1878                         msleep(1);
1879                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1880                 mlx4_en_deactivate_cq(priv, cq);
1881
1882                 mlx4_en_free_affinity_hint(priv, i);
1883         }
1884 }
1885
1886 static void mlx4_en_restart(struct work_struct *work)
1887 {
1888         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1889                                                  watchdog_task);
1890         struct mlx4_en_dev *mdev = priv->mdev;
1891         struct net_device *dev = priv->dev;
1892
1893         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1894
1895         mutex_lock(&mdev->state_lock);
1896         if (priv->port_up) {
1897                 mlx4_en_stop_port(dev, 1);
1898                 if (mlx4_en_start_port(dev))
1899                         en_err(priv, "Failed restarting port %d\n", priv->port);
1900         }
1901         mutex_unlock(&mdev->state_lock);
1902 }
1903
1904 static void mlx4_en_clear_stats(struct net_device *dev)
1905 {
1906         struct mlx4_en_priv *priv = netdev_priv(dev);
1907         struct mlx4_en_dev *mdev = priv->mdev;
1908         int i;
1909
1910         if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1911                 en_dbg(HW, priv, "Failed dumping statistics\n");
1912
1913         memset(&priv->stats, 0, sizeof(priv->stats));
1914         memset(&priv->pstats, 0, sizeof(priv->pstats));
1915         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1916         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1917
1918         for (i = 0; i < priv->tx_ring_num; i++) {
1919                 priv->tx_ring[i]->bytes = 0;
1920                 priv->tx_ring[i]->packets = 0;
1921                 priv->tx_ring[i]->tx_csum = 0;
1922         }
1923         for (i = 0; i < priv->rx_ring_num; i++) {
1924                 priv->rx_ring[i]->bytes = 0;
1925                 priv->rx_ring[i]->packets = 0;
1926                 priv->rx_ring[i]->csum_ok = 0;
1927                 priv->rx_ring[i]->csum_none = 0;
1928         }
1929 }
1930
1931 static int mlx4_en_open(struct net_device *dev)
1932 {
1933         struct mlx4_en_priv *priv = netdev_priv(dev);
1934         struct mlx4_en_dev *mdev = priv->mdev;
1935         int err = 0;
1936
1937         mutex_lock(&mdev->state_lock);
1938
1939         if (!mdev->device_up) {
1940                 en_err(priv, "Cannot open - device down/disabled\n");
1941                 err = -EBUSY;
1942                 goto out;
1943         }
1944
1945         /* Reset HW statistics and SW counters */
1946         mlx4_en_clear_stats(dev);
1947
1948         err = mlx4_en_start_port(dev);
1949         if (err)
1950                 en_err(priv, "Failed starting port:%d\n", priv->port);
1951
1952 out:
1953         mutex_unlock(&mdev->state_lock);
1954         return err;
1955 }
1956
1957
1958 static int mlx4_en_close(struct net_device *dev)
1959 {
1960         struct mlx4_en_priv *priv = netdev_priv(dev);
1961         struct mlx4_en_dev *mdev = priv->mdev;
1962
1963         en_dbg(IFDOWN, priv, "Close port called\n");
1964
1965         mutex_lock(&mdev->state_lock);
1966
1967         mlx4_en_stop_port(dev, 0);
1968         netif_carrier_off(dev);
1969
1970         mutex_unlock(&mdev->state_lock);
1971         return 0;
1972 }
1973
1974 void mlx4_en_free_resources(struct mlx4_en_priv *priv)
1975 {
1976         int i;
1977
1978 #ifdef CONFIG_RFS_ACCEL
1979         free_irq_cpu_rmap(priv->dev->rx_cpu_rmap);
1980         priv->dev->rx_cpu_rmap = NULL;
1981 #endif
1982
1983         for (i = 0; i < priv->tx_ring_num; i++) {
1984                 if (priv->tx_ring && priv->tx_ring[i])
1985                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
1986                 if (priv->tx_cq && priv->tx_cq[i])
1987                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
1988         }
1989
1990         for (i = 0; i < priv->rx_ring_num; i++) {
1991                 if (priv->rx_ring[i])
1992                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
1993                                 priv->prof->rx_ring_size, priv->stride);
1994                 if (priv->rx_cq[i])
1995                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
1996         }
1997
1998         if (priv->base_tx_qpn) {
1999                 mlx4_qp_release_range(priv->mdev->dev, priv->base_tx_qpn, priv->tx_ring_num);
2000                 priv->base_tx_qpn = 0;
2001         }
2002 }
2003
2004 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2005 {
2006         struct mlx4_en_port_profile *prof = priv->prof;
2007         int i;
2008         int err;
2009         int node;
2010
2011         err = mlx4_qp_reserve_range(priv->mdev->dev, priv->tx_ring_num, 256, &priv->base_tx_qpn);
2012         if (err) {
2013                 en_err(priv, "failed reserving range for TX rings\n");
2014                 return err;
2015         }
2016
2017         /* Create tx Rings */
2018         for (i = 0; i < priv->tx_ring_num; i++) {
2019                 node = cpu_to_node(i % num_online_cpus());
2020                 if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
2021                                       prof->tx_ring_size, i, TX, node))
2022                         goto err;
2023
2024                 if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
2025                                            priv->base_tx_qpn + i,
2026                                            prof->tx_ring_size, TXBB_SIZE,
2027                                            node, i))
2028                         goto err;
2029         }
2030
2031         /* Create rx Rings */
2032         for (i = 0; i < priv->rx_ring_num; i++) {
2033                 node = cpu_to_node(i % num_online_cpus());
2034                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2035                                       prof->rx_ring_size, i, RX, node))
2036                         goto err;
2037
2038                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2039                                            prof->rx_ring_size, priv->stride,
2040                                            node))
2041                         goto err;
2042         }
2043
2044 #ifdef CONFIG_RFS_ACCEL
2045         if (priv->mdev->dev->caps.comp_pool) {
2046                 priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool);
2047                 if (!priv->dev->rx_cpu_rmap)
2048                         goto err;
2049         }
2050 #endif
2051
2052         return 0;
2053
2054 err:
2055         en_err(priv, "Failed to allocate NIC resources\n");
2056         for (i = 0; i < priv->rx_ring_num; i++) {
2057                 if (priv->rx_ring[i])
2058                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2059                                                 prof->rx_ring_size,
2060                                                 priv->stride);
2061                 if (priv->rx_cq[i])
2062                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2063         }
2064         for (i = 0; i < priv->tx_ring_num; i++) {
2065                 if (priv->tx_ring[i])
2066                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
2067                 if (priv->tx_cq[i])
2068                         mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
2069         }
2070         return -ENOMEM;
2071 }
2072
2073
2074 void mlx4_en_destroy_netdev(struct net_device *dev)
2075 {
2076         struct mlx4_en_priv *priv = netdev_priv(dev);
2077         struct mlx4_en_dev *mdev = priv->mdev;
2078
2079         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2080
2081         /* Unregister device - this will close the port if it was up */
2082         if (priv->registered)
2083                 unregister_netdev(dev);
2084
2085         if (priv->allocated)
2086                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2087
2088         cancel_delayed_work(&priv->stats_task);
2089         cancel_delayed_work(&priv->service_task);
2090         /* flush any pending task for this netdev */
2091         flush_workqueue(mdev->workqueue);
2092
2093         /* Detach the netdev so tasks would not attempt to access it */
2094         mutex_lock(&mdev->state_lock);
2095         mdev->pndev[priv->port] = NULL;
2096         mutex_unlock(&mdev->state_lock);
2097
2098         mlx4_en_free_resources(priv);
2099
2100         kfree(priv->tx_ring);
2101         kfree(priv->tx_cq);
2102
2103         free_netdev(dev);
2104 }
2105
2106 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2107 {
2108         struct mlx4_en_priv *priv = netdev_priv(dev);
2109         struct mlx4_en_dev *mdev = priv->mdev;
2110         int err = 0;
2111
2112         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2113                  dev->mtu, new_mtu);
2114
2115         if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
2116                 en_err(priv, "Bad MTU size:%d.\n", new_mtu);
2117                 return -EPERM;
2118         }
2119         dev->mtu = new_mtu;
2120
2121         if (netif_running(dev)) {
2122                 mutex_lock(&mdev->state_lock);
2123                 if (!mdev->device_up) {
2124                         /* NIC is probably restarting - let watchdog task reset
2125                          * the port */
2126                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2127                 } else {
2128                         mlx4_en_stop_port(dev, 1);
2129                         err = mlx4_en_start_port(dev);
2130                         if (err) {
2131                                 en_err(priv, "Failed restarting port:%d\n",
2132                                          priv->port);
2133                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2134                         }
2135                 }
2136                 mutex_unlock(&mdev->state_lock);
2137         }
2138         return 0;
2139 }
2140
2141 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2142 {
2143         struct mlx4_en_priv *priv = netdev_priv(dev);
2144         struct mlx4_en_dev *mdev = priv->mdev;
2145         struct hwtstamp_config config;
2146
2147         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2148                 return -EFAULT;
2149
2150         /* reserved for future extensions */
2151         if (config.flags)
2152                 return -EINVAL;
2153
2154         /* device doesn't support time stamping */
2155         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2156                 return -EINVAL;
2157
2158         /* TX HW timestamp */
2159         switch (config.tx_type) {
2160         case HWTSTAMP_TX_OFF:
2161         case HWTSTAMP_TX_ON:
2162                 break;
2163         default:
2164                 return -ERANGE;
2165         }
2166
2167         /* RX HW timestamp */
2168         switch (config.rx_filter) {
2169         case HWTSTAMP_FILTER_NONE:
2170                 break;
2171         case HWTSTAMP_FILTER_ALL:
2172         case HWTSTAMP_FILTER_SOME:
2173         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2174         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2175         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2176         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2177         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2178         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2179         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2180         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2181         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2182         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2183         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2184         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2185                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2186                 break;
2187         default:
2188                 return -ERANGE;
2189         }
2190
2191         if (mlx4_en_timestamp_config(dev, config.tx_type, config.rx_filter)) {
2192                 config.tx_type = HWTSTAMP_TX_OFF;
2193                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2194         }
2195
2196         return copy_to_user(ifr->ifr_data, &config,
2197                             sizeof(config)) ? -EFAULT : 0;
2198 }
2199
2200 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2201 {
2202         struct mlx4_en_priv *priv = netdev_priv(dev);
2203
2204         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2205                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2206 }
2207
2208 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2209 {
2210         switch (cmd) {
2211         case SIOCSHWTSTAMP:
2212                 return mlx4_en_hwtstamp_set(dev, ifr);
2213         case SIOCGHWTSTAMP:
2214                 return mlx4_en_hwtstamp_get(dev, ifr);
2215         default:
2216                 return -EOPNOTSUPP;
2217         }
2218 }
2219
2220 static int mlx4_en_set_features(struct net_device *netdev,
2221                 netdev_features_t features)
2222 {
2223         struct mlx4_en_priv *priv = netdev_priv(netdev);
2224
2225         if (features & NETIF_F_LOOPBACK)
2226                 priv->ctrl_flags |= cpu_to_be32(MLX4_WQE_CTRL_FORCE_LOOPBACK);
2227         else
2228                 priv->ctrl_flags &=
2229                         cpu_to_be32(~MLX4_WQE_CTRL_FORCE_LOOPBACK);
2230
2231         mlx4_en_update_loopback_state(netdev, features);
2232
2233         return 0;
2234
2235 }
2236
2237 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2238 {
2239         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2240         struct mlx4_en_dev *mdev = en_priv->mdev;
2241         u64 mac_u64 = mlx4_mac_to_u64(mac);
2242
2243         if (!is_valid_ether_addr(mac))
2244                 return -EINVAL;
2245
2246         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2247 }
2248
2249 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos)
2250 {
2251         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2252         struct mlx4_en_dev *mdev = en_priv->mdev;
2253
2254         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos);
2255 }
2256
2257 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2258 {
2259         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2260         struct mlx4_en_dev *mdev = en_priv->mdev;
2261
2262         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2263 }
2264
2265 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2266 {
2267         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2268         struct mlx4_en_dev *mdev = en_priv->mdev;
2269
2270         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2271 }
2272
2273 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2274 {
2275         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2276         struct mlx4_en_dev *mdev = en_priv->mdev;
2277
2278         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2279 }
2280
2281 #define PORT_ID_BYTE_LEN 8
2282 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2283                                     struct netdev_phys_port_id *ppid)
2284 {
2285         struct mlx4_en_priv *priv = netdev_priv(dev);
2286         struct mlx4_dev *mdev = priv->mdev->dev;
2287         int i;
2288         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2289
2290         if (!phys_port_id)
2291                 return -EOPNOTSUPP;
2292
2293         ppid->id_len = sizeof(phys_port_id);
2294         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2295                 ppid->id[i] =  phys_port_id & 0xff;
2296                 phys_port_id >>= 8;
2297         }
2298         return 0;
2299 }
2300
2301 #ifdef CONFIG_MLX4_EN_VXLAN
2302 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2303 {
2304         int ret;
2305         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2306                                                  vxlan_add_task);
2307
2308         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2309         if (ret)
2310                 goto out;
2311
2312         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2313                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2314 out:
2315         if (ret)
2316                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2317 }
2318
2319 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2320 {
2321         int ret;
2322         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2323                                                  vxlan_del_task);
2324
2325         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2326                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2327         if (ret)
2328                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2329
2330         priv->vxlan_port = 0;
2331 }
2332
2333 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2334                                    sa_family_t sa_family, __be16 port)
2335 {
2336         struct mlx4_en_priv *priv = netdev_priv(dev);
2337         __be16 current_port;
2338
2339         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2340                 return;
2341
2342         if (sa_family == AF_INET6)
2343                 return;
2344
2345         current_port = priv->vxlan_port;
2346         if (current_port && current_port != port) {
2347                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2348                         ntohs(current_port), ntohs(port));
2349                 return;
2350         }
2351
2352         priv->vxlan_port = port;
2353         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2354 }
2355
2356 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2357                                    sa_family_t sa_family, __be16 port)
2358 {
2359         struct mlx4_en_priv *priv = netdev_priv(dev);
2360         __be16 current_port;
2361
2362         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2363                 return;
2364
2365         if (sa_family == AF_INET6)
2366                 return;
2367
2368         current_port = priv->vxlan_port;
2369         if (current_port != port) {
2370                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2371                 return;
2372         }
2373
2374         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2375 }
2376 #endif
2377
2378 static const struct net_device_ops mlx4_netdev_ops = {
2379         .ndo_open               = mlx4_en_open,
2380         .ndo_stop               = mlx4_en_close,
2381         .ndo_start_xmit         = mlx4_en_xmit,
2382         .ndo_select_queue       = mlx4_en_select_queue,
2383         .ndo_get_stats          = mlx4_en_get_stats,
2384         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2385         .ndo_set_mac_address    = mlx4_en_set_mac,
2386         .ndo_validate_addr      = eth_validate_addr,
2387         .ndo_change_mtu         = mlx4_en_change_mtu,
2388         .ndo_do_ioctl           = mlx4_en_ioctl,
2389         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2390         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2391         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2392 #ifdef CONFIG_NET_POLL_CONTROLLER
2393         .ndo_poll_controller    = mlx4_en_netpoll,
2394 #endif
2395         .ndo_set_features       = mlx4_en_set_features,
2396         .ndo_setup_tc           = mlx4_en_setup_tc,
2397 #ifdef CONFIG_RFS_ACCEL
2398         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2399 #endif
2400 #ifdef CONFIG_NET_RX_BUSY_POLL
2401         .ndo_busy_poll          = mlx4_en_low_latency_recv,
2402 #endif
2403         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2404 #ifdef CONFIG_MLX4_EN_VXLAN
2405         .ndo_add_vxlan_port     = mlx4_en_add_vxlan_port,
2406         .ndo_del_vxlan_port     = mlx4_en_del_vxlan_port,
2407 #endif
2408 };
2409
2410 static const struct net_device_ops mlx4_netdev_ops_master = {
2411         .ndo_open               = mlx4_en_open,
2412         .ndo_stop               = mlx4_en_close,
2413         .ndo_start_xmit         = mlx4_en_xmit,
2414         .ndo_select_queue       = mlx4_en_select_queue,
2415         .ndo_get_stats          = mlx4_en_get_stats,
2416         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2417         .ndo_set_mac_address    = mlx4_en_set_mac,
2418         .ndo_validate_addr      = eth_validate_addr,
2419         .ndo_change_mtu         = mlx4_en_change_mtu,
2420         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2421         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2422         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2423         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2424         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2425         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2426         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2427         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2428 #ifdef CONFIG_NET_POLL_CONTROLLER
2429         .ndo_poll_controller    = mlx4_en_netpoll,
2430 #endif
2431         .ndo_set_features       = mlx4_en_set_features,
2432         .ndo_setup_tc           = mlx4_en_setup_tc,
2433 #ifdef CONFIG_RFS_ACCEL
2434         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2435 #endif
2436         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2437 };
2438
2439 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
2440                         struct mlx4_en_port_profile *prof)
2441 {
2442         struct net_device *dev;
2443         struct mlx4_en_priv *priv;
2444         int i;
2445         int err;
2446         u64 mac_u64;
2447
2448         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
2449                                  MAX_TX_RINGS, MAX_RX_RINGS);
2450         if (dev == NULL)
2451                 return -ENOMEM;
2452
2453         netif_set_real_num_tx_queues(dev, prof->tx_ring_num);
2454         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
2455
2456         SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
2457         dev->dev_port = port - 1;
2458
2459         /*
2460          * Initialize driver private data
2461          */
2462
2463         priv = netdev_priv(dev);
2464         memset(priv, 0, sizeof(struct mlx4_en_priv));
2465         priv->dev = dev;
2466         priv->mdev = mdev;
2467         priv->ddev = &mdev->pdev->dev;
2468         priv->prof = prof;
2469         priv->port = port;
2470         priv->port_up = false;
2471         priv->flags = prof->flags;
2472         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
2473                         MLX4_WQE_CTRL_SOLICITED);
2474         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
2475         priv->tx_ring_num = prof->tx_ring_num;
2476         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
2477
2478         priv->tx_ring = kzalloc(sizeof(struct mlx4_en_tx_ring *) * MAX_TX_RINGS,
2479                                 GFP_KERNEL);
2480         if (!priv->tx_ring) {
2481                 err = -ENOMEM;
2482                 goto out;
2483         }
2484         priv->tx_cq = kzalloc(sizeof(struct mlx4_en_cq *) * MAX_TX_RINGS,
2485                               GFP_KERNEL);
2486         if (!priv->tx_cq) {
2487                 err = -ENOMEM;
2488                 goto out;
2489         }
2490         priv->rx_ring_num = prof->rx_ring_num;
2491         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
2492         priv->mac_index = -1;
2493         priv->msg_enable = MLX4_EN_MSG_LEVEL;
2494         spin_lock_init(&priv->stats_lock);
2495         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
2496         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
2497         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
2498         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
2499         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
2500 #ifdef CONFIG_MLX4_EN_VXLAN
2501         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
2502         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
2503 #endif
2504 #ifdef CONFIG_MLX4_EN_DCB
2505         if (!mlx4_is_slave(priv->mdev->dev)) {
2506                 if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) {
2507                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
2508                 } else {
2509                         en_info(priv, "enabling only PFC DCB ops\n");
2510                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
2511                 }
2512         }
2513 #endif
2514
2515         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
2516                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
2517
2518         /* Query for default mac and max mtu */
2519         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
2520
2521         /* Set default MAC */
2522         dev->addr_len = ETH_ALEN;
2523         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
2524         if (!is_valid_ether_addr(dev->dev_addr)) {
2525                 if (mlx4_is_slave(priv->mdev->dev)) {
2526                         eth_hw_addr_random(dev);
2527                         en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
2528                         mac_u64 = mlx4_mac_to_u64(dev->dev_addr);
2529                         mdev->dev->caps.def_mac[priv->port] = mac_u64;
2530                 } else {
2531                         en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
2532                                priv->port, dev->dev_addr);
2533                         err = -EINVAL;
2534                         goto out;
2535                 }
2536         }
2537
2538         memcpy(priv->prev_mac, dev->dev_addr, sizeof(priv->prev_mac));
2539
2540         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2541                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2542         err = mlx4_en_alloc_resources(priv);
2543         if (err)
2544                 goto out;
2545
2546 #ifdef CONFIG_RFS_ACCEL
2547         INIT_LIST_HEAD(&priv->filters);
2548         spin_lock_init(&priv->filters_lock);
2549 #endif
2550
2551         /* Initialize time stamping config */
2552         priv->hwtstamp_config.flags = 0;
2553         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
2554         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
2555
2556         /* Allocate page for receive rings */
2557         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
2558                                 MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
2559         if (err) {
2560                 en_err(priv, "Failed to allocate page for rx qps\n");
2561                 goto out;
2562         }
2563         priv->allocated = 1;
2564
2565         /*
2566          * Initialize netdev entry points
2567          */
2568         if (mlx4_is_master(priv->mdev->dev))
2569                 dev->netdev_ops = &mlx4_netdev_ops_master;
2570         else
2571                 dev->netdev_ops = &mlx4_netdev_ops;
2572         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
2573         netif_set_real_num_tx_queues(dev, priv->tx_ring_num);
2574         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
2575
2576         dev->ethtool_ops = &mlx4_en_ethtool_ops;
2577
2578         /*
2579          * Set driver features
2580          */
2581         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
2582         if (mdev->LSO_support)
2583                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
2584
2585         dev->vlan_features = dev->hw_features;
2586
2587         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
2588         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
2589                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
2590                         NETIF_F_HW_VLAN_CTAG_FILTER;
2591         dev->hw_features |= NETIF_F_LOOPBACK;
2592
2593         if (mdev->dev->caps.steering_mode ==
2594             MLX4_STEERING_MODE_DEVICE_MANAGED)
2595                 dev->hw_features |= NETIF_F_NTUPLE;
2596
2597         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
2598                 dev->priv_flags |= IFF_UNICAST_FLT;
2599
2600         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2601                 dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_RXCSUM |
2602                                         NETIF_F_TSO | NETIF_F_GSO_UDP_TUNNEL;
2603                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL;
2604                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL;
2605         }
2606
2607         mdev->pndev[port] = dev;
2608
2609         netif_carrier_off(dev);
2610         mlx4_en_set_default_moderation(priv);
2611
2612         err = register_netdev(dev);
2613         if (err) {
2614                 en_err(priv, "Netdev registration failed for port %d\n", port);
2615                 goto out;
2616         }
2617         priv->registered = 1;
2618
2619         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num);
2620         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
2621
2622         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
2623
2624         /* Configure port */
2625         mlx4_en_calc_rx_buf(dev);
2626         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
2627                                     priv->rx_skb_size + ETH_FCS_LEN,
2628                                     prof->tx_pause, prof->tx_ppp,
2629                                     prof->rx_pause, prof->rx_ppp);
2630         if (err) {
2631                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
2632                        priv->port, err);
2633                 goto out;
2634         }
2635
2636         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
2637                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
2638                 if (err) {
2639                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
2640                                err);
2641                         goto out;
2642                 }
2643         }
2644
2645         /* Init port */
2646         en_warn(priv, "Initializing port\n");
2647         err = mlx4_INIT_PORT(mdev->dev, priv->port);
2648         if (err) {
2649                 en_err(priv, "Failed Initializing port\n");
2650                 goto out;
2651         }
2652         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
2653
2654         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2655                 queue_delayed_work(mdev->workqueue, &priv->service_task,
2656                                    SERVICE_TASK_DELAY);
2657
2658         return 0;
2659
2660 out:
2661         mlx4_en_destroy_netdev(dev);
2662         return err;
2663 }
2664