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

   1 /*
   2  * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  *
  32  */
  33
  34 #include <linux/bpf.h>
  35 #include <linux/etherdevice.h>
  36 #include <linux/tcp.h>
  37 #include <linux/if_vlan.h>
  38 #include <linux/delay.h>
  39 #include <linux/slab.h>
  40 #include <linux/hash.h>
  41 #include <net/ip.h>
  42 #include <net/vxlan.h>
  43 #include <net/devlink.h>
  44
  45 #include <linux/mlx4/driver.h>
  46 #include <linux/mlx4/device.h>
  47 #include <linux/mlx4/cmd.h>
  48 #include <linux/mlx4/cq.h>
  49
  50 #include "mlx4_en.h"
  51 #include "en_port.h"
  52
  53 #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  54                                    XDP_PACKET_HEADROOM))
  55
  56 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  57 {
  58         struct mlx4_en_priv *priv = netdev_priv(dev);
  59         int i;
  60         unsigned int offset = 0;
  61
  62         if (up && up != MLX4_EN_NUM_UP_HIGH)
  63                 return -EINVAL;
  64
  65         netdev_set_num_tc(dev, up);
  66         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  67         /* Partition Tx queues evenly amongst UP's */
  68         for (i = 0; i < up; i++) {
  69                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  70                 offset += priv->num_tx_rings_p_up;
  71         }
  72
  73 #ifdef CONFIG_MLX4_EN_DCB
  74         if (!mlx4_is_slave(priv->mdev->dev)) {
  75                 if (up) {
  76                         if (priv->dcbx_cap)
  77                                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  78                 } else {
  79                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  80                         priv->cee_config.pfc_state = false;
  81                 }
  82         }
  83 #endif /* CONFIG_MLX4_EN_DCB */
  84
  85         return 0;
  86 }
  87
  88 int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  89 {
  90         struct mlx4_en_priv *priv = netdev_priv(dev);
  91         struct mlx4_en_dev *mdev = priv->mdev;
  92         struct mlx4_en_port_profile new_prof;
  93         struct mlx4_en_priv *tmp;
  94         int port_up = 0;
  95         int err = 0;
  96
  97         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
  98         if (!tmp)
  99                 return -ENOMEM;
 100
 101         mutex_lock(&mdev->state_lock);
 102         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 103         new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 104                                       MLX4_EN_NUM_UP_HIGH;
 105         new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 106                                    new_prof.num_up;
 107         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 108         if (err)
 109                 goto out;
 110
 111         if (priv->port_up) {
 112                 port_up = 1;
 113                 mlx4_en_stop_port(dev, 1);
 114         }
 115
 116         mlx4_en_safe_replace_resources(priv, tmp);
 117         if (port_up) {
 118                 err = mlx4_en_start_port(dev);
 119                 if (err) {
 120                         en_err(priv, "Failed starting port for setup TC\n");
 121                         goto out;
 122                 }
 123         }
 124
 125         err = mlx4_en_setup_tc(dev, tc);
 126 out:
 127         mutex_unlock(&mdev->state_lock);
 128         kfree(tmp);
 129         return err;
 130 }
 131
 132 static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 133                               void *type_data)
 134 {
 135         struct tc_mqprio_qopt *mqprio = type_data;
 136
 137         if (type != TC_SETUP_QDISC_MQPRIO)
 138                 return -EOPNOTSUPP;
 139
 140         if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 141                 return -EINVAL;
 142
 143         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 144
 145         return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 146 }
 147
 148 #ifdef CONFIG_RFS_ACCEL
 149
 150 struct mlx4_en_filter {
 151         struct list_head next;
 152         struct work_struct work;
 153
 154         u8     ip_proto;
 155         __be32 src_ip;
 156         __be32 dst_ip;
 157         __be16 src_port;
 158         __be16 dst_port;
 159
 160         int rxq_index;
 161         struct mlx4_en_priv *priv;
 162         u32 flow_id;                    /* RFS infrastructure id */
 163         int id;                         /* mlx4_en driver id */
 164         u64 reg_id;                     /* Flow steering API id */
 165         u8 activated;                   /* Used to prevent expiry before filter
 166                                          * is attached
 167                                          */
 168         struct hlist_node filter_chain;
 169 };
 170
 171 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 172
 173 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 174 {
 175         switch (ip_proto) {
 176         case IPPROTO_UDP:
 177                 return MLX4_NET_TRANS_RULE_ID_UDP;
 178         case IPPROTO_TCP:
 179                 return MLX4_NET_TRANS_RULE_ID_TCP;
 180         default:
 181                 return MLX4_NET_TRANS_RULE_NUM;
 182         }
 183 };
 184
 185 /* Must not acquire state_lock, as its corresponding work_sync
 186  * is done under it.
 187  */
 188 static void mlx4_en_filter_work(struct work_struct *work)
 189 {
 190         struct mlx4_en_filter *filter = container_of(work,
 191                                                      struct mlx4_en_filter,
 192                                                      work);
 193         struct mlx4_en_priv *priv = filter->priv;
 194         struct mlx4_spec_list spec_tcp_udp = {
 195                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 196                 {
 197                         .tcp_udp = {
 198                                 .dst_port = filter->dst_port,
 199                                 .dst_port_msk = (__force __be16)-1,
 200                                 .src_port = filter->src_port,
 201                                 .src_port_msk = (__force __be16)-1,
 202                         },
 203                 },
 204         };
 205         struct mlx4_spec_list spec_ip = {
 206                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 207                 {
 208                         .ipv4 = {
 209                                 .dst_ip = filter->dst_ip,
 210                                 .dst_ip_msk = (__force __be32)-1,
 211                                 .src_ip = filter->src_ip,
 212                                 .src_ip_msk = (__force __be32)-1,
 213                         },
 214                 },
 215         };
 216         struct mlx4_spec_list spec_eth = {
 217                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 218         };
 219         struct mlx4_net_trans_rule rule = {
 220                 .list = LIST_HEAD_INIT(rule.list),
 221                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 222                 .exclusive = 1,
 223                 .allow_loopback = 1,
 224                 .promisc_mode = MLX4_FS_REGULAR,
 225                 .port = priv->port,
 226                 .priority = MLX4_DOMAIN_RFS,
 227         };
 228         int rc;
 229         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 230
 231         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 232                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 233                         filter->ip_proto);
 234                 goto ignore;
 235         }
 236         list_add_tail(&spec_eth.list, &rule.list);
 237         list_add_tail(&spec_ip.list, &rule.list);
 238         list_add_tail(&spec_tcp_udp.list, &rule.list);
 239
 240         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 241         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 242         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 243
 244         filter->activated = 0;
 245
 246         if (filter->reg_id) {
 247                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 248                 if (rc && rc != -ENOENT)
 249                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 250         }
 251
 252         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 253         if (rc)
 254                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 255
 256 ignore:
 257         mlx4_en_filter_rfs_expire(priv);
 258
 259         filter->activated = 1;
 260 }
 261
 262 static inline struct hlist_head *
 263 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 264                    __be16 src_port, __be16 dst_port)
 265 {
 266         unsigned long l;
 267         int bucket_idx;
 268
 269         l = (__force unsigned long)src_port |
 270             ((__force unsigned long)dst_port << 2);
 271         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 272
 273         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 274
 275         return &priv->filter_hash[bucket_idx];
 276 }
 277
 278 static struct mlx4_en_filter *
 279 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 280                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 281                      __be16 dst_port, u32 flow_id)
 282 {
 283         struct mlx4_en_filter *filter = NULL;
 284
 285         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 286         if (!filter)
 287                 return NULL;
 288
 289         filter->priv = priv;
 290         filter->rxq_index = rxq_index;
 291         INIT_WORK(&filter->work, mlx4_en_filter_work);
 292
 293         filter->src_ip = src_ip;
 294         filter->dst_ip = dst_ip;
 295         filter->ip_proto = ip_proto;
 296         filter->src_port = src_port;
 297         filter->dst_port = dst_port;
 298
 299         filter->flow_id = flow_id;
 300
 301         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 302
 303         list_add_tail(&filter->next, &priv->filters);
 304         hlist_add_head(&filter->filter_chain,
 305                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 306                                           dst_port));
 307
 308         return filter;
 309 }
 310
 311 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 312 {
 313         struct mlx4_en_priv *priv = filter->priv;
 314         int rc;
 315
 316         list_del(&filter->next);
 317
 318         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 319         if (rc && rc != -ENOENT)
 320                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 321
 322         kfree(filter);
 323 }
 324
 325 static inline struct mlx4_en_filter *
 326 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 327                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 328 {
 329         struct mlx4_en_filter *filter;
 330         struct mlx4_en_filter *ret = NULL;
 331
 332         hlist_for_each_entry(filter,
 333                              filter_hash_bucket(priv, src_ip, dst_ip,
 334                                                 src_port, dst_port),
 335                              filter_chain) {
 336                 if (filter->src_ip == src_ip &&
 337                     filter->dst_ip == dst_ip &&
 338                     filter->ip_proto == ip_proto &&
 339                     filter->src_port == src_port &&
 340                     filter->dst_port == dst_port) {
 341                         ret = filter;
 342                         break;
 343                 }
 344         }
 345
 346         return ret;
 347 }
 348
 349 static int
 350 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 351                    u16 rxq_index, u32 flow_id)
 352 {
 353         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 354         struct mlx4_en_filter *filter;
 355         const struct iphdr *ip;
 356         const __be16 *ports;
 357         u8 ip_proto;
 358         __be32 src_ip;
 359         __be32 dst_ip;
 360         __be16 src_port;
 361         __be16 dst_port;
 362         int nhoff = skb_network_offset(skb);
 363         int ret = 0;
 364
 365         if (skb->protocol != htons(ETH_P_IP))
 366                 return -EPROTONOSUPPORT;
 367
 368         ip = (const struct iphdr *)(skb->data + nhoff);
 369         if (ip_is_fragment(ip))
 370                 return -EPROTONOSUPPORT;
 371
 372         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 373                 return -EPROTONOSUPPORT;
 374         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 375
 376         ip_proto = ip->protocol;
 377         src_ip = ip->saddr;
 378         dst_ip = ip->daddr;
 379         src_port = ports[0];
 380         dst_port = ports[1];
 381
 382         spin_lock_bh(&priv->filters_lock);
 383         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 384                                      src_port, dst_port);
 385         if (filter) {
 386                 if (filter->rxq_index == rxq_index)
 387                         goto out;
 388
 389                 filter->rxq_index = rxq_index;
 390         } else {
 391                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 392                                               src_ip, dst_ip, ip_proto,
 393                                               src_port, dst_port, flow_id);
 394                 if (!filter) {
 395                         ret = -ENOMEM;
 396                         goto err;
 397                 }
 398         }
 399
 400         queue_work(priv->mdev->workqueue, &filter->work);
 401
 402 out:
 403         ret = filter->id;
 404 err:
 405         spin_unlock_bh(&priv->filters_lock);
 406
 407         return ret;
 408 }
 409
 410 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 411 {
 412         struct mlx4_en_filter *filter, *tmp;
 413         LIST_HEAD(del_list);
 414
 415         spin_lock_bh(&priv->filters_lock);
 416         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 417                 list_move(&filter->next, &del_list);
 418                 hlist_del(&filter->filter_chain);
 419         }
 420         spin_unlock_bh(&priv->filters_lock);
 421
 422         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 423                 cancel_work_sync(&filter->work);
 424                 mlx4_en_filter_free(filter);
 425         }
 426 }
 427
 428 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 429 {
 430         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 431         LIST_HEAD(del_list);
 432         int i = 0;
 433
 434         spin_lock_bh(&priv->filters_lock);
 435         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 436                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 437                         break;
 438
 439                 if (filter->activated &&
 440                     !work_pending(&filter->work) &&
 441                     rps_may_expire_flow(priv->dev,
 442                                         filter->rxq_index, filter->flow_id,
 443                                         filter->id)) {
 444                         list_move(&filter->next, &del_list);
 445                         hlist_del(&filter->filter_chain);
 446                 } else
 447                         last_filter = filter;
 448
 449                 i++;
 450         }
 451
 452         if (last_filter && (&last_filter->next != priv->filters.next))
 453                 list_move(&priv->filters, &last_filter->next);
 454
 455         spin_unlock_bh(&priv->filters_lock);
 456
 457         list_for_each_entry_safe(filter, tmp, &del_list, next)
 458                 mlx4_en_filter_free(filter);
 459 }
 460 #endif
 461
 462 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 463                                    __be16 proto, u16 vid)
 464 {
 465         struct mlx4_en_priv *priv = netdev_priv(dev);
 466         struct mlx4_en_dev *mdev = priv->mdev;
 467         int err;
 468         int idx;
 469
 470         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 471
 472         set_bit(vid, priv->active_vlans);
 473
 474         /* Add VID to port VLAN filter */
 475         mutex_lock(&mdev->state_lock);
 476         if (mdev->device_up && priv->port_up) {
 477                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 478                 if (err) {
 479                         en_err(priv, "Failed configuring VLAN filter\n");
 480                         goto out;
 481                 }
 482         }
 483         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 484         if (err)
 485                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 486
 487 out:
 488         mutex_unlock(&mdev->state_lock);
 489         return err;
 490 }
 491
 492 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 493                                     __be16 proto, u16 vid)
 494 {
 495         struct mlx4_en_priv *priv = netdev_priv(dev);
 496         struct mlx4_en_dev *mdev = priv->mdev;
 497         int err = 0;
 498
 499         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 500
 501         clear_bit(vid, priv->active_vlans);
 502
 503         /* Remove VID from port VLAN filter */
 504         mutex_lock(&mdev->state_lock);
 505         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 506
 507         if (mdev->device_up && priv->port_up) {
 508                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 509                 if (err)
 510                         en_err(priv, "Failed configuring VLAN filter\n");
 511         }
 512         mutex_unlock(&mdev->state_lock);
 513
 514         return err;
 515 }
 516
 517 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 518 {
 519         int i;
 520         for (i = ETH_ALEN - 1; i >= 0; --i) {
 521                 dst_mac[i] = src_mac & 0xff;
 522                 src_mac >>= 8;
 523         }
 524         memset(&dst_mac[ETH_ALEN], 0, 2);
 525 }
 526
 527
 528 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 529                                     int qpn, u64 *reg_id)
 530 {
 531         int err;
 532
 533         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 534             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 535                 return 0; /* do nothing */
 536
 537         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 538                                     MLX4_DOMAIN_NIC, reg_id);
 539         if (err) {
 540                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 541                 return err;
 542         }
 543         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 544         return 0;
 545 }
 546
 547
 548 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 549                                 unsigned char *mac, int *qpn, u64 *reg_id)
 550 {
 551         struct mlx4_en_dev *mdev = priv->mdev;
 552         struct mlx4_dev *dev = mdev->dev;
 553         int err;
 554
 555         switch (dev->caps.steering_mode) {
 556         case MLX4_STEERING_MODE_B0: {
 557                 struct mlx4_qp qp;
 558                 u8 gid[16] = {0};
 559
 560                 qp.qpn = *qpn;
 561                 memcpy(&gid[10], mac, ETH_ALEN);
 562                 gid[5] = priv->port;
 563
 564                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 565                 break;
 566         }
 567         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 568                 struct mlx4_spec_list spec_eth = { {NULL} };
 569                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 570
 571                 struct mlx4_net_trans_rule rule = {
 572                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 573                         .exclusive = 0,
 574                         .allow_loopback = 1,
 575                         .promisc_mode = MLX4_FS_REGULAR,
 576                         .priority = MLX4_DOMAIN_NIC,
 577                 };
 578
 579                 rule.port = priv->port;
 580                 rule.qpn = *qpn;
 581                 INIT_LIST_HEAD(&rule.list);
 582
 583                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 584                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 585                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 586                 list_add_tail(&spec_eth.list, &rule.list);
 587
 588                 err = mlx4_flow_attach(dev, &rule, reg_id);
 589                 break;
 590         }
 591         default:
 592                 return -EINVAL;
 593         }
 594         if (err)
 595                 en_warn(priv, "Failed Attaching Unicast\n");
 596
 597         return err;
 598 }
 599
 600 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 601                                      unsigned char *mac, int qpn, u64 reg_id)
 602 {
 603         struct mlx4_en_dev *mdev = priv->mdev;
 604         struct mlx4_dev *dev = mdev->dev;
 605
 606         switch (dev->caps.steering_mode) {
 607         case MLX4_STEERING_MODE_B0: {
 608                 struct mlx4_qp qp;
 609                 u8 gid[16] = {0};
 610
 611                 qp.qpn = qpn;
 612                 memcpy(&gid[10], mac, ETH_ALEN);
 613                 gid[5] = priv->port;
 614
 615                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 616                 break;
 617         }
 618         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 619                 mlx4_flow_detach(dev, reg_id);
 620                 break;
 621         }
 622         default:
 623                 en_err(priv, "Invalid steering mode.\n");
 624         }
 625 }
 626
 627 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 628 {
 629         struct mlx4_en_dev *mdev = priv->mdev;
 630         struct mlx4_dev *dev = mdev->dev;
 631         int index = 0;
 632         int err = 0;
 633         int *qpn = &priv->base_qpn;
 634         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 635
 636         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 637                priv->dev->dev_addr);
 638         index = mlx4_register_mac(dev, priv->port, mac);
 639         if (index < 0) {
 640                 err = index;
 641                 en_err(priv, "Failed adding MAC: %pM\n",
 642                        priv->dev->dev_addr);
 643                 return err;
 644         }
 645
 646         en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 647
 648         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 649                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 650                 *qpn = base_qpn + index;
 651                 return 0;
 652         }
 653
 654         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 655                                     MLX4_RES_USAGE_DRIVER);
 656         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 657         if (err) {
 658                 en_err(priv, "Failed to reserve qp for mac registration\n");
 659                 mlx4_unregister_mac(dev, priv->port, mac);
 660                 return err;
 661         }
 662
 663         return 0;
 664 }
 665
 666 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 667 {
 668         struct mlx4_en_dev *mdev = priv->mdev;
 669         struct mlx4_dev *dev = mdev->dev;
 670         int qpn = priv->base_qpn;
 671
 672         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 673                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 674                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 675                        priv->dev->dev_addr);
 676                 mlx4_unregister_mac(dev, priv->port, mac);
 677         } else {
 678                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 679                        priv->port, qpn);
 680                 mlx4_qp_release_range(dev, qpn, 1);
 681                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 682         }
 683 }
 684
 685 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 686                                unsigned char *new_mac, unsigned char *prev_mac)
 687 {
 688         struct mlx4_en_dev *mdev = priv->mdev;
 689         struct mlx4_dev *dev = mdev->dev;
 690         int err = 0;
 691         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 692
 693         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 694                 struct hlist_head *bucket;
 695                 unsigned int mac_hash;
 696                 struct mlx4_mac_entry *entry;
 697                 struct hlist_node *tmp;
 698                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 699
 700                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 701                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 702                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 703                                 mlx4_en_uc_steer_release(priv, entry->mac,
 704                                                          qpn, entry->reg_id);
 705                                 mlx4_unregister_mac(dev, priv->port,
 706                                                     prev_mac_u64);
 707                                 hlist_del_rcu(&entry->hlist);
 708                                 synchronize_rcu();
 709                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 710                                 entry->reg_id = 0;
 711                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 712                                 hlist_add_head_rcu(&entry->hlist,
 713                                                    &priv->mac_hash[mac_hash]);
 714                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 715                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 716                                                            &qpn,
 717                                                            &entry->reg_id);
 718                                 if (err)
 719                                         return err;
 720                                 if (priv->tunnel_reg_id) {
 721                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 722                                         priv->tunnel_reg_id = 0;
 723                                 }
 724                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 725                                                                &priv->tunnel_reg_id);
 726                                 return err;
 727                         }
 728                 }
 729                 return -EINVAL;
 730         }
 731
 732         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 733 }
 734
 735 static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 736                                     unsigned char new_mac[ETH_ALEN + 2])
 737 {
 738         struct mlx4_en_dev *mdev = priv->mdev;
 739         int err;
 740
 741         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 742                 return;
 743
 744         err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 745         if (err)
 746                 en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 747                        new_mac, priv->port, err);
 748 }
 749
 750 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 751                               unsigned char new_mac[ETH_ALEN + 2])
 752 {
 753         int err = 0;
 754
 755         if (priv->port_up) {
 756                 /* Remove old MAC and insert the new one */
 757                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 758                                           new_mac, priv->current_mac);
 759                 if (err)
 760                         en_err(priv, "Failed changing HW MAC address\n");
 761         } else
 762                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 763
 764         if (!err)
 765                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 766
 767         return err;
 768 }
 769
 770 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 771 {
 772         struct mlx4_en_priv *priv = netdev_priv(dev);
 773         struct mlx4_en_dev *mdev = priv->mdev;
 774         struct sockaddr *saddr = addr;
 775         unsigned char new_mac[ETH_ALEN + 2];
 776         int err;
 777
 778         if (!is_valid_ether_addr(saddr->sa_data))
 779                 return -EADDRNOTAVAIL;
 780
 781         mutex_lock(&mdev->state_lock);
 782         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 783         err = mlx4_en_do_set_mac(priv, new_mac);
 784         if (err)
 785                 goto out;
 786
 787         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 788         mlx4_en_update_user_mac(priv, new_mac);
 789 out:
 790         mutex_unlock(&mdev->state_lock);
 791
 792         return err;
 793 }
 794
 795 static void mlx4_en_clear_list(struct net_device *dev)
 796 {
 797         struct mlx4_en_priv *priv = netdev_priv(dev);
 798         struct mlx4_en_mc_list *tmp, *mc_to_del;
 799
 800         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 801                 list_del(&mc_to_del->list);
 802                 kfree(mc_to_del);
 803         }
 804 }
 805
 806 static void mlx4_en_cache_mclist(struct net_device *dev)
 807 {
 808         struct mlx4_en_priv *priv = netdev_priv(dev);
 809         struct netdev_hw_addr *ha;
 810         struct mlx4_en_mc_list *tmp;
 811
 812         mlx4_en_clear_list(dev);
 813         netdev_for_each_mc_addr(ha, dev) {
 814                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 815                 if (!tmp) {
 816                         mlx4_en_clear_list(dev);
 817                         return;
 818                 }
 819                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 820                 list_add_tail(&tmp->list, &priv->mc_list);
 821         }
 822 }
 823
 824 static void update_mclist_flags(struct mlx4_en_priv *priv,
 825                                 struct list_head *dst,
 826                                 struct list_head *src)
 827 {
 828         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 829         bool found;
 830
 831         /* Find all the entries that should be removed from dst,
 832          * These are the entries that are not found in src
 833          */
 834         list_for_each_entry(dst_tmp, dst, list) {
 835                 found = false;
 836                 list_for_each_entry(src_tmp, src, list) {
 837                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 838                                 found = true;
 839                                 break;
 840                         }
 841                 }
 842                 if (!found)
 843                         dst_tmp->action = MCLIST_REM;
 844         }
 845
 846         /* Add entries that exist in src but not in dst
 847          * mark them as need to add
 848          */
 849         list_for_each_entry(src_tmp, src, list) {
 850                 found = false;
 851                 list_for_each_entry(dst_tmp, dst, list) {
 852                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 853                                 dst_tmp->action = MCLIST_NONE;
 854                                 found = true;
 855                                 break;
 856                         }
 857                 }
 858                 if (!found) {
 859                         new_mc = kmemdup(src_tmp,
 860                                          sizeof(struct mlx4_en_mc_list),
 861                                          GFP_KERNEL);
 862                         if (!new_mc)
 863                                 return;
 864
 865                         new_mc->action = MCLIST_ADD;
 866                         list_add_tail(&new_mc->list, dst);
 867                 }
 868         }
 869 }
 870
 871 static void mlx4_en_set_rx_mode(struct net_device *dev)
 872 {
 873         struct mlx4_en_priv *priv = netdev_priv(dev);
 874
 875         if (!priv->port_up)
 876                 return;
 877
 878         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 879 }
 880
 881 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 882                                      struct mlx4_en_dev *mdev)
 883 {
 884         int err = 0;
 885
 886         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 887                 if (netif_msg_rx_status(priv))
 888                         en_warn(priv, "Entering promiscuous mode\n");
 889                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 890
 891                 /* Enable promiscouos mode */
 892                 switch (mdev->dev->caps.steering_mode) {
 893                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 894                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 895                                                           priv->port,
 896                                                           priv->base_qpn,
 897                                                           MLX4_FS_ALL_DEFAULT);
 898                         if (err)
 899                                 en_err(priv, "Failed enabling promiscuous mode\n");
 900                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 901                         break;
 902
 903                 case MLX4_STEERING_MODE_B0:
 904                         err = mlx4_unicast_promisc_add(mdev->dev,
 905                                                        priv->base_qpn,
 906                                                        priv->port);
 907                         if (err)
 908                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 909
 910                         /* Add the default qp number as multicast
 911                          * promisc
 912                          */
 913                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 914                                 err = mlx4_multicast_promisc_add(mdev->dev,
 915                                                                  priv->base_qpn,
 916                                                                  priv->port);
 917                                 if (err)
 918                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 919                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 920                         }
 921                         break;
 922
 923                 case MLX4_STEERING_MODE_A0:
 924                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 925                                                      priv->port,
 926                                                      priv->base_qpn,
 927                                                      1);
 928                         if (err)
 929                                 en_err(priv, "Failed enabling promiscuous mode\n");
 930                         break;
 931                 }
 932
 933                 /* Disable port multicast filter (unconditionally) */
 934                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 935                                           0, MLX4_MCAST_DISABLE);
 936                 if (err)
 937                         en_err(priv, "Failed disabling multicast filter\n");
 938         }
 939 }
 940
 941 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 942                                        struct mlx4_en_dev *mdev)
 943 {
 944         int err = 0;
 945
 946         if (netif_msg_rx_status(priv))
 947                 en_warn(priv, "Leaving promiscuous mode\n");
 948         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 949
 950         /* Disable promiscouos mode */
 951         switch (mdev->dev->caps.steering_mode) {
 952         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 953                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 954                                                      priv->port,
 955                                                      MLX4_FS_ALL_DEFAULT);
 956                 if (err)
 957                         en_err(priv, "Failed disabling promiscuous mode\n");
 958                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 959                 break;
 960
 961         case MLX4_STEERING_MODE_B0:
 962                 err = mlx4_unicast_promisc_remove(mdev->dev,
 963                                                   priv->base_qpn,
 964                                                   priv->port);
 965                 if (err)
 966                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 967                 /* Disable Multicast promisc */
 968                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 969                         err = mlx4_multicast_promisc_remove(mdev->dev,
 970                                                             priv->base_qpn,
 971                                                             priv->port);
 972                         if (err)
 973                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 974                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 975                 }
 976                 break;
 977
 978         case MLX4_STEERING_MODE_A0:
 979                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 980                                              priv->port,
 981                                              priv->base_qpn, 0);
 982                 if (err)
 983                         en_err(priv, "Failed disabling promiscuous mode\n");
 984                 break;
 985         }
 986 }
 987
 988 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 989                                  struct net_device *dev,
 990                                  struct mlx4_en_dev *mdev)
 991 {
 992         struct mlx4_en_mc_list *mclist, *tmp;
 993         u64 mcast_addr = 0;
 994         u8 mc_list[16] = {0};
 995         int err = 0;
 996
 997         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 998         if (dev->flags & IFF_ALLMULTI) {
 999                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1000                                           0, MLX4_MCAST_DISABLE);
1001                 if (err)
1002                         en_err(priv, "Failed disabling multicast filter\n");
1003
1004                 /* Add the default qp number as multicast promisc */
1005                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1006                         switch (mdev->dev->caps.steering_mode) {
1007                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1008                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1009                                                                   priv->port,
1010                                                                   priv->base_qpn,
1011                                                                   MLX4_FS_MC_DEFAULT);
1012                                 break;
1013
1014                         case MLX4_STEERING_MODE_B0:
1015                                 err = mlx4_multicast_promisc_add(mdev->dev,
1016                                                                  priv->base_qpn,
1017                                                                  priv->port);
1018                                 break;
1019
1020                         case MLX4_STEERING_MODE_A0:
1021                                 break;
1022                         }
1023                         if (err)
1024                                 en_err(priv, "Failed entering multicast promisc mode\n");
1025                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1026                 }
1027         } else {
1028                 /* Disable Multicast promisc */
1029                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1030                         switch (mdev->dev->caps.steering_mode) {
1031                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1032                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1033                                                                      priv->port,
1034                                                                      MLX4_FS_MC_DEFAULT);
1035                                 break;
1036
1037                         case MLX4_STEERING_MODE_B0:
1038                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1039                                                                     priv->base_qpn,
1040                                                                     priv->port);
1041                                 break;
1042
1043                         case MLX4_STEERING_MODE_A0:
1044                                 break;
1045                         }
1046                         if (err)
1047                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1048                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1049                 }
1050
1051                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1052                                           0, MLX4_MCAST_DISABLE);
1053                 if (err)
1054                         en_err(priv, "Failed disabling multicast filter\n");
1055
1056                 /* Flush mcast filter and init it with broadcast address */
1057                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1058                                     1, MLX4_MCAST_CONFIG);
1059
1060                 /* Update multicast list - we cache all addresses so they won't
1061                  * change while HW is updated holding the command semaphor */
1062                 netif_addr_lock_bh(dev);
1063                 mlx4_en_cache_mclist(dev);
1064                 netif_addr_unlock_bh(dev);
1065                 list_for_each_entry(mclist, &priv->mc_list, list) {
1066                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
1067                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1068                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1069                 }
1070                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1071                                           0, MLX4_MCAST_ENABLE);
1072                 if (err)
1073                         en_err(priv, "Failed enabling multicast filter\n");
1074
1075                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1076                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1077                         if (mclist->action == MCLIST_REM) {
1078                                 /* detach this address and delete from list */
1079                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1080                                 mc_list[5] = priv->port;
1081                                 err = mlx4_multicast_detach(mdev->dev,
1082                                                             priv->rss_map.indir_qp,
1083                                                             mc_list,
1084                                                             MLX4_PROT_ETH,
1085                                                             mclist->reg_id);
1086                                 if (err)
1087                                         en_err(priv, "Fail to detach multicast address\n");
1088
1089                                 if (mclist->tunnel_reg_id) {
1090                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1091                                         if (err)
1092                                                 en_err(priv, "Failed to detach multicast address\n");
1093                                 }
1094
1095                                 /* remove from list */
1096                                 list_del(&mclist->list);
1097                                 kfree(mclist);
1098                         } else if (mclist->action == MCLIST_ADD) {
1099                                 /* attach the address */
1100                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1101                                 /* needed for B0 steering support */
1102                                 mc_list[5] = priv->port;
1103                                 err = mlx4_multicast_attach(mdev->dev,
1104                                                             priv->rss_map.indir_qp,
1105                                                             mc_list,
1106                                                             priv->port, 0,
1107                                                             MLX4_PROT_ETH,
1108                                                             &mclist->reg_id);
1109                                 if (err)
1110                                         en_err(priv, "Fail to attach multicast address\n");
1111
1112                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1113                                                                &mclist->tunnel_reg_id);
1114                                 if (err)
1115                                         en_err(priv, "Failed to attach multicast address\n");
1116                         }
1117                 }
1118         }
1119 }
1120
1121 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1122                                  struct net_device *dev,
1123                                  struct mlx4_en_dev *mdev)
1124 {
1125         struct netdev_hw_addr *ha;
1126         struct mlx4_mac_entry *entry;
1127         struct hlist_node *tmp;
1128         bool found;
1129         u64 mac;
1130         int err = 0;
1131         struct hlist_head *bucket;
1132         unsigned int i;
1133         int removed = 0;
1134         u32 prev_flags;
1135
1136         /* Note that we do not need to protect our mac_hash traversal with rcu,
1137          * since all modification code is protected by mdev->state_lock
1138          */
1139
1140         /* find what to remove */
1141         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1142                 bucket = &priv->mac_hash[i];
1143                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1144                         found = false;
1145                         netdev_for_each_uc_addr(ha, dev) {
1146                                 if (ether_addr_equal_64bits(entry->mac,
1147                                                             ha->addr)) {
1148                                         found = true;
1149                                         break;
1150                                 }
1151                         }
1152
1153                         /* MAC address of the port is not in uc list */
1154                         if (ether_addr_equal_64bits(entry->mac,
1155                                                     priv->current_mac))
1156                                 found = true;
1157
1158                         if (!found) {
1159                                 mac = mlx4_mac_to_u64(entry->mac);
1160                                 mlx4_en_uc_steer_release(priv, entry->mac,
1161                                                          priv->base_qpn,
1162                                                          entry->reg_id);
1163                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1164
1165                                 hlist_del_rcu(&entry->hlist);
1166                                 kfree_rcu(entry, rcu);
1167                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1168                                        entry->mac, priv->port);
1169                                 ++removed;
1170                         }
1171                 }
1172         }
1173
1174         /* if we didn't remove anything, there is no use in trying to add
1175          * again once we are in a forced promisc mode state
1176          */
1177         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1178                 return;
1179
1180         prev_flags = priv->flags;
1181         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1182
1183         /* find what to add */
1184         netdev_for_each_uc_addr(ha, dev) {
1185                 found = false;
1186                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1187                 hlist_for_each_entry(entry, bucket, hlist) {
1188                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1189                                 found = true;
1190                                 break;
1191                         }
1192                 }
1193
1194                 if (!found) {
1195                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1196                         if (!entry) {
1197                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1198                                        ha->addr, priv->port);
1199                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1200                                 break;
1201                         }
1202                         mac = mlx4_mac_to_u64(ha->addr);
1203                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1204                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1205                         if (err < 0) {
1206                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1207                                        ha->addr, priv->port, err);
1208                                 kfree(entry);
1209                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1210                                 break;
1211                         }
1212                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1213                                                    &priv->base_qpn,
1214                                                    &entry->reg_id);
1215                         if (err) {
1216                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1217                                        ha->addr, priv->port, err);
1218                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1219                                 kfree(entry);
1220                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1221                                 break;
1222                         } else {
1223                                 unsigned int mac_hash;
1224                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1225                                        ha->addr, priv->port);
1226                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1227                                 bucket = &priv->mac_hash[mac_hash];
1228                                 hlist_add_head_rcu(&entry->hlist, bucket);
1229                         }
1230                 }
1231         }
1232
1233         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1234                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1235                         priv->port);
1236         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1237                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1238                         priv->port);
1239         }
1240 }
1241
1242 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1243 {
1244         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1245                                                  rx_mode_task);
1246         struct mlx4_en_dev *mdev = priv->mdev;
1247         struct net_device *dev = priv->dev;
1248
1249         mutex_lock(&mdev->state_lock);
1250         if (!mdev->device_up) {
1251                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1252                 goto out;
1253         }
1254         if (!priv->port_up) {
1255                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1256                 goto out;
1257         }
1258
1259         if (!netif_carrier_ok(dev)) {
1260                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1261                         if (priv->port_state.link_state) {
1262                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1263                                 netif_carrier_on(dev);
1264                                 en_dbg(LINK, priv, "Link Up\n");
1265                         }
1266                 }
1267         }
1268
1269         if (dev->priv_flags & IFF_UNICAST_FLT)
1270                 mlx4_en_do_uc_filter(priv, dev, mdev);
1271
1272         /* Promsicuous mode: disable all filters */
1273         if ((dev->flags & IFF_PROMISC) ||
1274             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1275                 mlx4_en_set_promisc_mode(priv, mdev);
1276                 goto out;
1277         }
1278
1279         /* Not in promiscuous mode */
1280         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1281                 mlx4_en_clear_promisc_mode(priv, mdev);
1282
1283         mlx4_en_do_multicast(priv, dev, mdev);
1284 out:
1285         mutex_unlock(&mdev->state_lock);
1286 }
1287
1288 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1289 {
1290         u64 reg_id;
1291         int err = 0;
1292         int *qpn = &priv->base_qpn;
1293         struct mlx4_mac_entry *entry;
1294
1295         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1296         if (err)
1297                 return err;
1298
1299         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1300                                        &priv->tunnel_reg_id);
1301         if (err)
1302                 goto tunnel_err;
1303
1304         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1305         if (!entry) {
1306                 err = -ENOMEM;
1307                 goto alloc_err;
1308         }
1309
1310         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1311         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1312         entry->reg_id = reg_id;
1313         hlist_add_head_rcu(&entry->hlist,
1314                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1315
1316         return 0;
1317
1318 alloc_err:
1319         if (priv->tunnel_reg_id)
1320                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1321
1322 tunnel_err:
1323         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1324         return err;
1325 }
1326
1327 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1328 {
1329         u64 mac;
1330         unsigned int i;
1331         int qpn = priv->base_qpn;
1332         struct hlist_head *bucket;
1333         struct hlist_node *tmp;
1334         struct mlx4_mac_entry *entry;
1335
1336         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1337                 bucket = &priv->mac_hash[i];
1338                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1339                         mac = mlx4_mac_to_u64(entry->mac);
1340                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1341                                entry->mac);
1342                         mlx4_en_uc_steer_release(priv, entry->mac,
1343                                                  qpn, entry->reg_id);
1344
1345                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1346                         hlist_del_rcu(&entry->hlist);
1347                         kfree_rcu(entry, rcu);
1348                 }
1349         }
1350
1351         if (priv->tunnel_reg_id) {
1352                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1353                 priv->tunnel_reg_id = 0;
1354         }
1355 }
1356
1357 static void mlx4_en_tx_timeout(struct net_device *dev)
1358 {
1359         struct mlx4_en_priv *priv = netdev_priv(dev);
1360         struct mlx4_en_dev *mdev = priv->mdev;
1361         int i;
1362
1363         if (netif_msg_timer(priv))
1364                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1365
1366         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1367                 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i];
1368
1369                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1370                         continue;
1371                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1372                         i, tx_ring->qpn, tx_ring->sp_cqn,
1373                         tx_ring->cons, tx_ring->prod);
1374         }
1375
1376         priv->port_stats.tx_timeout++;
1377         en_dbg(DRV, priv, "Scheduling watchdog\n");
1378         queue_work(mdev->workqueue, &priv->watchdog_task);
1379 }
1380
1381
1382 static void
1383 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1384 {
1385         struct mlx4_en_priv *priv = netdev_priv(dev);
1386
1387         spin_lock_bh(&priv->stats_lock);
1388         mlx4_en_fold_software_stats(dev);
1389         netdev_stats_to_stats64(stats, &dev->stats);
1390         spin_unlock_bh(&priv->stats_lock);
1391 }
1392
1393 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1394 {
1395         struct mlx4_en_cq *cq;
1396         int i, t;
1397
1398         /* If we haven't received a specific coalescing setting
1399          * (module param), we set the moderation parameters as follows:
1400          * - moder_cnt is set to the number of mtu sized packets to
1401          *   satisfy our coalescing target.
1402          * - moder_time is set to a fixed value.
1403          */
1404         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1405         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1406         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1407         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1408         en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1409                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1410
1411         /* Setup cq moderation params */
1412         for (i = 0; i < priv->rx_ring_num; i++) {
1413                 cq = priv->rx_cq[i];
1414                 cq->moder_cnt = priv->rx_frames;
1415                 cq->moder_time = priv->rx_usecs;
1416                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1417                 priv->last_moder_packets[i] = 0;
1418                 priv->last_moder_bytes[i] = 0;
1419         }
1420
1421         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1422                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1423                         cq = priv->tx_cq[t][i];
1424                         cq->moder_cnt = priv->tx_frames;
1425                         cq->moder_time = priv->tx_usecs;
1426                 }
1427         }
1428
1429         /* Reset auto-moderation params */
1430         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1431         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1432         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1433         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1434         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1435         priv->adaptive_rx_coal = 1;
1436         priv->last_moder_jiffies = 0;
1437         priv->last_moder_tx_packets = 0;
1438 }
1439
1440 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1441 {
1442         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1443         u32 pkt_rate_high, pkt_rate_low;
1444         struct mlx4_en_cq *cq;
1445         unsigned long packets;
1446         unsigned long rate;
1447         unsigned long avg_pkt_size;
1448         unsigned long rx_packets;
1449         unsigned long rx_bytes;
1450         unsigned long rx_pkt_diff;
1451         int moder_time;
1452         int ring, err;
1453
1454         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1455                 return;
1456
1457         pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1458         pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1459
1460         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1461                 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1462                 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1463
1464                 rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1465                 packets = rx_pkt_diff;
1466                 rate = packets * HZ / period;
1467                 avg_pkt_size = packets ? (rx_bytes -
1468                                 priv->last_moder_bytes[ring]) / packets : 0;
1469
1470                 /* Apply auto-moderation only when packet rate
1471                  * exceeds a rate that it matters */
1472                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1473                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1474                         if (rate <= pkt_rate_low)
1475                                 moder_time = priv->rx_usecs_low;
1476                         else if (rate >= pkt_rate_high)
1477                                 moder_time = priv->rx_usecs_high;
1478                         else
1479                                 moder_time = (rate - pkt_rate_low) *
1480                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1481                                         (pkt_rate_high - pkt_rate_low) +
1482                                         priv->rx_usecs_low;
1483                 } else {
1484                         moder_time = priv->rx_usecs_low;
1485                 }
1486
1487                 cq = priv->rx_cq[ring];
1488                 if (moder_time != priv->last_moder_time[ring] ||
1489                     cq->moder_cnt != priv->rx_frames) {
1490                         priv->last_moder_time[ring] = moder_time;
1491                         cq->moder_time = moder_time;
1492                         cq->moder_cnt = priv->rx_frames;
1493                         err = mlx4_en_set_cq_moder(priv, cq);
1494                         if (err)
1495                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1496                                        ring);
1497                 }
1498                 priv->last_moder_packets[ring] = rx_packets;
1499                 priv->last_moder_bytes[ring] = rx_bytes;
1500         }
1501
1502         priv->last_moder_jiffies = jiffies;
1503 }
1504
1505 static void mlx4_en_do_get_stats(struct work_struct *work)
1506 {
1507         struct delayed_work *delay = to_delayed_work(work);
1508         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1509                                                  stats_task);
1510         struct mlx4_en_dev *mdev = priv->mdev;
1511         int err;
1512
1513         mutex_lock(&mdev->state_lock);
1514         if (mdev->device_up) {
1515                 if (priv->port_up) {
1516                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1517                         if (err)
1518                                 en_dbg(HW, priv, "Could not update stats\n");
1519
1520                         mlx4_en_auto_moderation(priv);
1521                 }
1522
1523                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1524         }
1525         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1526                 mlx4_en_do_set_mac(priv, priv->current_mac);
1527                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1528         }
1529         mutex_unlock(&mdev->state_lock);
1530 }
1531
1532 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1533  * periodically
1534  */
1535 static void mlx4_en_service_task(struct work_struct *work)
1536 {
1537         struct delayed_work *delay = to_delayed_work(work);
1538         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1539                                                  service_task);
1540         struct mlx4_en_dev *mdev = priv->mdev;
1541
1542         mutex_lock(&mdev->state_lock);
1543         if (mdev->device_up) {
1544                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1545                         mlx4_en_ptp_overflow_check(mdev);
1546
1547                 mlx4_en_recover_from_oom(priv);
1548                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1549                                    SERVICE_TASK_DELAY);
1550         }
1551         mutex_unlock(&mdev->state_lock);
1552 }
1553
1554 static void mlx4_en_linkstate(struct work_struct *work)
1555 {
1556         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1557                                                  linkstate_task);
1558         struct mlx4_en_dev *mdev = priv->mdev;
1559         int linkstate = priv->link_state;
1560
1561         mutex_lock(&mdev->state_lock);
1562         /* If observable port state changed set carrier state and
1563          * report to system log */
1564         if (priv->last_link_state != linkstate) {
1565                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1566                         en_info(priv, "Link Down\n");
1567                         netif_carrier_off(priv->dev);
1568                 } else {
1569                         en_info(priv, "Link Up\n");
1570                         netif_carrier_on(priv->dev);
1571                 }
1572         }
1573         priv->last_link_state = linkstate;
1574         mutex_unlock(&mdev->state_lock);
1575 }
1576
1577 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1578 {
1579         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1580         int numa_node = priv->mdev->dev->numa_node;
1581
1582         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1583                 return -ENOMEM;
1584
1585         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1586                         ring->affinity_mask);
1587         return 0;
1588 }
1589
1590 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1591 {
1592         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1593 }
1594
1595 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1596                                       int tx_ring_idx)
1597 {
1598         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1599         int rr_index = tx_ring_idx;
1600
1601         tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1602         tx_ring->recycle_ring = priv->rx_ring[rr_index];
1603         en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1604                TX_XDP, tx_ring_idx, rr_index);
1605 }
1606
1607 int mlx4_en_start_port(struct net_device *dev)
1608 {
1609         struct mlx4_en_priv *priv = netdev_priv(dev);
1610         struct mlx4_en_dev *mdev = priv->mdev;
1611         struct mlx4_en_cq *cq;
1612         struct mlx4_en_tx_ring *tx_ring;
1613         int rx_index = 0;
1614         int err = 0;
1615         int i, t;
1616         int j;
1617         u8 mc_list[16] = {0};
1618
1619         if (priv->port_up) {
1620                 en_dbg(DRV, priv, "start port called while port already up\n");
1621                 return 0;
1622         }
1623
1624         INIT_LIST_HEAD(&priv->mc_list);
1625         INIT_LIST_HEAD(&priv->curr_list);
1626         INIT_LIST_HEAD(&priv->ethtool_list);
1627         memset(&priv->ethtool_rules[0], 0,
1628                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1629
1630         /* Calculate Rx buf size */
1631         dev->mtu = min(dev->mtu, priv->max_mtu);
1632         mlx4_en_calc_rx_buf(dev);
1633         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1634
1635         /* Configure rx cq's and rings */
1636         err = mlx4_en_activate_rx_rings(priv);
1637         if (err) {
1638                 en_err(priv, "Failed to activate RX rings\n");
1639                 return err;
1640         }
1641         for (i = 0; i < priv->rx_ring_num; i++) {
1642                 cq = priv->rx_cq[i];
1643
1644                 err = mlx4_en_init_affinity_hint(priv, i);
1645                 if (err) {
1646                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1647                         goto cq_err;
1648                 }
1649
1650                 err = mlx4_en_activate_cq(priv, cq, i);
1651                 if (err) {
1652                         en_err(priv, "Failed activating Rx CQ\n");
1653                         mlx4_en_free_affinity_hint(priv, i);
1654                         goto cq_err;
1655                 }
1656
1657                 for (j = 0; j < cq->size; j++) {
1658                         struct mlx4_cqe *cqe = NULL;
1659
1660                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1661                               priv->cqe_factor;
1662                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1663                 }
1664
1665                 err = mlx4_en_set_cq_moder(priv, cq);
1666                 if (err) {
1667                         en_err(priv, "Failed setting cq moderation parameters\n");
1668                         mlx4_en_deactivate_cq(priv, cq);
1669                         mlx4_en_free_affinity_hint(priv, i);
1670                         goto cq_err;
1671                 }
1672                 mlx4_en_arm_cq(priv, cq);
1673                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1674                 ++rx_index;
1675         }
1676
1677         /* Set qp number */
1678         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1679         err = mlx4_en_get_qp(priv);
1680         if (err) {
1681                 en_err(priv, "Failed getting eth qp\n");
1682                 goto cq_err;
1683         }
1684         mdev->mac_removed[priv->port] = 0;
1685
1686         priv->counter_index =
1687                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1688
1689         err = mlx4_en_config_rss_steer(priv);
1690         if (err) {
1691                 en_err(priv, "Failed configuring rss steering\n");
1692                 goto mac_err;
1693         }
1694
1695         err = mlx4_en_create_drop_qp(priv);
1696         if (err)
1697                 goto rss_err;
1698
1699         /* Configure tx cq's and rings */
1700         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1701                 u8 num_tx_rings_p_up = t == TX ?
1702                         priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1703
1704                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1705                         /* Configure cq */
1706                         cq = priv->tx_cq[t][i];
1707                         err = mlx4_en_activate_cq(priv, cq, i);
1708                         if (err) {
1709                                 en_err(priv, "Failed allocating Tx CQ\n");
1710                                 goto tx_err;
1711                         }
1712                         err = mlx4_en_set_cq_moder(priv, cq);
1713                         if (err) {
1714                                 en_err(priv, "Failed setting cq moderation parameters\n");
1715                                 mlx4_en_deactivate_cq(priv, cq);
1716                                 goto tx_err;
1717                         }
1718                         en_dbg(DRV, priv,
1719                                "Resetting index of collapsed CQ:%d to -1\n", i);
1720                         cq->buf->wqe_index = cpu_to_be16(0xffff);
1721
1722                         /* Configure ring */
1723                         tx_ring = priv->tx_ring[t][i];
1724                         err = mlx4_en_activate_tx_ring(priv, tx_ring,
1725                                                        cq->mcq.cqn,
1726                                                        i / num_tx_rings_p_up);
1727                         if (err) {
1728                                 en_err(priv, "Failed allocating Tx ring\n");
1729                                 mlx4_en_deactivate_cq(priv, cq);
1730                                 goto tx_err;
1731                         }
1732                         if (t != TX_XDP) {
1733                                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1734                                 tx_ring->recycle_ring = NULL;
1735
1736                                 /* Arm CQ for TX completions */
1737                                 mlx4_en_arm_cq(priv, cq);
1738
1739                         } else {
1740                                 mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring);
1741                                 mlx4_en_init_recycle_ring(priv, i);
1742                                 /* XDP TX CQ should never be armed */
1743                         }
1744
1745                         /* Set initial ownership of all Tx TXBBs to SW (1) */
1746                         for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1747                                 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1748                 }
1749         }
1750
1751         /* Configure port */
1752         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1753                                     priv->rx_skb_size + ETH_FCS_LEN,
1754                                     priv->prof->tx_pause,
1755                                     priv->prof->tx_ppp,
1756                                     priv->prof->rx_pause,
1757                                     priv->prof->rx_ppp);
1758         if (err) {
1759                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1760                        priv->port, err);
1761                 goto tx_err;
1762         }
1763
1764         err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1765         if (err) {
1766                 en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1767                        dev->mtu, priv->port, err);
1768                 goto tx_err;
1769         }
1770
1771         /* Set default qp number */
1772         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1773         if (err) {
1774                 en_err(priv, "Failed setting default qp numbers\n");
1775                 goto tx_err;
1776         }
1777
1778         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1779                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1780                 if (err) {
1781                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1782                                err);
1783                         goto tx_err;
1784                 }
1785         }
1786
1787         /* Init port */
1788         en_dbg(HW, priv, "Initializing port\n");
1789         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1790         if (err) {
1791                 en_err(priv, "Failed Initializing port\n");
1792                 goto tx_err;
1793         }
1794
1795         /* Set Unicast and VXLAN steering rules */
1796         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1797             mlx4_en_set_rss_steer_rules(priv))
1798                 mlx4_warn(mdev, "Failed setting steering rules\n");
1799
1800         /* Attach rx QP to bradcast address */
1801         eth_broadcast_addr(&mc_list[10]);
1802         mc_list[5] = priv->port; /* needed for B0 steering support */
1803         if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1804                                   priv->port, 0, MLX4_PROT_ETH,
1805                                   &priv->broadcast_id))
1806                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1807
1808         /* Must redo promiscuous mode setup. */
1809         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1810
1811         /* Schedule multicast task to populate multicast list */
1812         queue_work(mdev->workqueue, &priv->rx_mode_task);
1813
1814         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1815                 udp_tunnel_get_rx_info(dev);
1816
1817         priv->port_up = true;
1818
1819         /* Process all completions if exist to prevent
1820          * the queues freezing if they are full
1821          */
1822         for (i = 0; i < priv->rx_ring_num; i++) {
1823                 local_bh_disable();
1824                 napi_schedule(&priv->rx_cq[i]->napi);
1825                 local_bh_enable();
1826         }
1827
1828         netif_tx_start_all_queues(dev);
1829         netif_device_attach(dev);
1830
1831         return 0;
1832
1833 tx_err:
1834         if (t == MLX4_EN_NUM_TX_TYPES) {
1835                 t--;
1836                 i = priv->tx_ring_num[t];
1837         }
1838         while (t >= 0) {
1839                 while (i--) {
1840                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1841                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1842                 }
1843                 if (!t--)
1844                         break;
1845                 i = priv->tx_ring_num[t];
1846         }
1847         mlx4_en_destroy_drop_qp(priv);
1848 rss_err:
1849         mlx4_en_release_rss_steer(priv);
1850 mac_err:
1851         mlx4_en_put_qp(priv);
1852 cq_err:
1853         while (rx_index--) {
1854                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1855                 mlx4_en_free_affinity_hint(priv, rx_index);
1856         }
1857         for (i = 0; i < priv->rx_ring_num; i++)
1858                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1859
1860         return err; /* need to close devices */
1861 }
1862
1863
1864 void mlx4_en_stop_port(struct net_device *dev, int detach)
1865 {
1866         struct mlx4_en_priv *priv = netdev_priv(dev);
1867         struct mlx4_en_dev *mdev = priv->mdev;
1868         struct mlx4_en_mc_list *mclist, *tmp;
1869         struct ethtool_flow_id *flow, *tmp_flow;
1870         int i, t;
1871         u8 mc_list[16] = {0};
1872
1873         if (!priv->port_up) {
1874                 en_dbg(DRV, priv, "stop port called while port already down\n");
1875                 return;
1876         }
1877
1878         /* close port*/
1879         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1880
1881         /* Synchronize with tx routine */
1882         netif_tx_lock_bh(dev);
1883         if (detach)
1884                 netif_device_detach(dev);
1885         netif_tx_stop_all_queues(dev);
1886         netif_tx_unlock_bh(dev);
1887
1888         netif_tx_disable(dev);
1889
1890         spin_lock_bh(&priv->stats_lock);
1891         mlx4_en_fold_software_stats(dev);
1892         /* Set port as not active */
1893         priv->port_up = false;
1894         spin_unlock_bh(&priv->stats_lock);
1895
1896         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1897
1898         /* Promsicuous mode */
1899         if (mdev->dev->caps.steering_mode ==
1900             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1901                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1902                                  MLX4_EN_FLAG_MC_PROMISC);
1903                 mlx4_flow_steer_promisc_remove(mdev->dev,
1904                                                priv->port,
1905                                                MLX4_FS_ALL_DEFAULT);
1906                 mlx4_flow_steer_promisc_remove(mdev->dev,
1907                                                priv->port,
1908                                                MLX4_FS_MC_DEFAULT);
1909         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1910                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1911
1912                 /* Disable promiscouos mode */
1913                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1914                                             priv->port);
1915
1916                 /* Disable Multicast promisc */
1917                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1918                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1919                                                       priv->port);
1920                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1921                 }
1922         }
1923
1924         /* Detach All multicasts */
1925         eth_broadcast_addr(&mc_list[10]);
1926         mc_list[5] = priv->port; /* needed for B0 steering support */
1927         mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1928                               MLX4_PROT_ETH, priv->broadcast_id);
1929         list_for_each_entry(mclist, &priv->curr_list, list) {
1930                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1931                 mc_list[5] = priv->port;
1932                 mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1933                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1934                 if (mclist->tunnel_reg_id)
1935                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1936         }
1937         mlx4_en_clear_list(dev);
1938         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1939                 list_del(&mclist->list);
1940                 kfree(mclist);
1941         }
1942
1943         /* Flush multicast filter */
1944         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1945
1946         /* Remove flow steering rules for the port*/
1947         if (mdev->dev->caps.steering_mode ==
1948             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1949                 ASSERT_RTNL();
1950                 list_for_each_entry_safe(flow, tmp_flow,
1951                                          &priv->ethtool_list, list) {
1952                         mlx4_flow_detach(mdev->dev, flow->id);
1953                         list_del(&flow->list);
1954                 }
1955         }
1956
1957         mlx4_en_destroy_drop_qp(priv);
1958
1959         /* Free TX Rings */
1960         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1961                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1962                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1963                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1964                 }
1965         }
1966         msleep(10);
1967
1968         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1969                 for (i = 0; i < priv->tx_ring_num[t]; i++)
1970                         mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1971
1972         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1973                 mlx4_en_delete_rss_steer_rules(priv);
1974
1975         /* Free RSS qps */
1976         mlx4_en_release_rss_steer(priv);
1977
1978         /* Unregister Mac address for the port */
1979         mlx4_en_put_qp(priv);
1980         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1981                 mdev->mac_removed[priv->port] = 1;
1982
1983         /* Free RX Rings */
1984         for (i = 0; i < priv->rx_ring_num; i++) {
1985                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1986
1987                 napi_synchronize(&cq->napi);
1988                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1989                 mlx4_en_deactivate_cq(priv, cq);
1990
1991                 mlx4_en_free_affinity_hint(priv, i);
1992         }
1993 }
1994
1995 static void mlx4_en_restart(struct work_struct *work)
1996 {
1997         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1998                                                  watchdog_task);
1999         struct mlx4_en_dev *mdev = priv->mdev;
2000         struct net_device *dev = priv->dev;
2001
2002         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2003
2004         rtnl_lock();
2005         mutex_lock(&mdev->state_lock);
2006         if (priv->port_up) {
2007                 mlx4_en_stop_port(dev, 1);
2008                 if (mlx4_en_start_port(dev))
2009                         en_err(priv, "Failed restarting port %d\n", priv->port);
2010         }
2011         mutex_unlock(&mdev->state_lock);
2012         rtnl_unlock();
2013 }
2014
2015 static void mlx4_en_clear_stats(struct net_device *dev)
2016 {
2017         struct mlx4_en_priv *priv = netdev_priv(dev);
2018         struct mlx4_en_dev *mdev = priv->mdev;
2019         struct mlx4_en_tx_ring **tx_ring;
2020         int i;
2021
2022         if (!mlx4_is_slave(mdev->dev))
2023                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2024                         en_dbg(HW, priv, "Failed dumping statistics\n");
2025
2026         memset(&priv->pstats, 0, sizeof(priv->pstats));
2027         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2028         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2029         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2030         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2031         memset(&priv->rx_priority_flowstats, 0,
2032                sizeof(priv->rx_priority_flowstats));
2033         memset(&priv->tx_priority_flowstats, 0,
2034                sizeof(priv->tx_priority_flowstats));
2035         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2036
2037         tx_ring = priv->tx_ring[TX];
2038         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2039                 tx_ring[i]->bytes = 0;
2040                 tx_ring[i]->packets = 0;
2041                 tx_ring[i]->tx_csum = 0;
2042                 tx_ring[i]->tx_dropped = 0;
2043                 tx_ring[i]->queue_stopped = 0;
2044                 tx_ring[i]->wake_queue = 0;
2045                 tx_ring[i]->tso_packets = 0;
2046                 tx_ring[i]->xmit_more = 0;
2047         }
2048         for (i = 0; i < priv->rx_ring_num; i++) {
2049                 priv->rx_ring[i]->bytes = 0;
2050                 priv->rx_ring[i]->packets = 0;
2051                 priv->rx_ring[i]->csum_ok = 0;
2052                 priv->rx_ring[i]->csum_none = 0;
2053                 priv->rx_ring[i]->csum_complete = 0;
2054         }
2055 }
2056
2057 static int mlx4_en_open(struct net_device *dev)
2058 {
2059         struct mlx4_en_priv *priv = netdev_priv(dev);
2060         struct mlx4_en_dev *mdev = priv->mdev;
2061         int err = 0;
2062
2063         mutex_lock(&mdev->state_lock);
2064
2065         if (!mdev->device_up) {
2066                 en_err(priv, "Cannot open - device down/disabled\n");
2067                 err = -EBUSY;
2068                 goto out;
2069         }
2070
2071         /* Reset HW statistics and SW counters */
2072         mlx4_en_clear_stats(dev);
2073
2074         err = mlx4_en_start_port(dev);
2075         if (err)
2076                 en_err(priv, "Failed starting port:%d\n", priv->port);
2077
2078 out:
2079         mutex_unlock(&mdev->state_lock);
2080         return err;
2081 }
2082
2083
2084 static int mlx4_en_close(struct net_device *dev)
2085 {
2086         struct mlx4_en_priv *priv = netdev_priv(dev);
2087         struct mlx4_en_dev *mdev = priv->mdev;
2088
2089         en_dbg(IFDOWN, priv, "Close port called\n");
2090
2091         mutex_lock(&mdev->state_lock);
2092
2093         mlx4_en_stop_port(dev, 0);
2094         netif_carrier_off(dev);
2095
2096         mutex_unlock(&mdev->state_lock);
2097         return 0;
2098 }
2099
2100 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2101 {
2102         int i, t;
2103
2104 #ifdef CONFIG_RFS_ACCEL
2105         priv->dev->rx_cpu_rmap = NULL;
2106 #endif
2107
2108         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2109                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2110                         if (priv->tx_ring[t] && priv->tx_ring[t][i])
2111                                 mlx4_en_destroy_tx_ring(priv,
2112                                                         &priv->tx_ring[t][i]);
2113                         if (priv->tx_cq[t] && priv->tx_cq[t][i])
2114                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2115                 }
2116                 kfree(priv->tx_ring[t]);
2117                 kfree(priv->tx_cq[t]);
2118         }
2119
2120         for (i = 0; i < priv->rx_ring_num; i++) {
2121                 if (priv->rx_ring[i])
2122                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2123                                 priv->prof->rx_ring_size, priv->stride);
2124                 if (priv->rx_cq[i])
2125                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2126         }
2127
2128 }
2129
2130 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2131 {
2132         struct mlx4_en_port_profile *prof = priv->prof;
2133         int i, t;
2134         int node;
2135
2136         /* Create tx Rings */
2137         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2138                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2139                         node = cpu_to_node(i % num_online_cpus());
2140                         if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2141                                               prof->tx_ring_size, i, t, node))
2142                                 goto err;
2143
2144                         if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2145                                                    prof->tx_ring_size,
2146                                                    TXBB_SIZE, node, i))
2147                                 goto err;
2148                 }
2149         }
2150
2151         /* Create rx Rings */
2152         for (i = 0; i < priv->rx_ring_num; i++) {
2153                 node = cpu_to_node(i % num_online_cpus());
2154                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2155                                       prof->rx_ring_size, i, RX, node))
2156                         goto err;
2157
2158                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2159                                            prof->rx_ring_size, priv->stride,
2160                                            node, i))
2161                         goto err;
2162
2163         }
2164
2165 #ifdef CONFIG_RFS_ACCEL
2166         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2167 #endif
2168
2169         return 0;
2170
2171 err:
2172         en_err(priv, "Failed to allocate NIC resources\n");
2173         for (i = 0; i < priv->rx_ring_num; i++) {
2174                 if (priv->rx_ring[i])
2175                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2176                                                 prof->rx_ring_size,
2177                                                 priv->stride);
2178                 if (priv->rx_cq[i])
2179                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2180         }
2181         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2182                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2183                         if (priv->tx_ring[t][i])
2184                                 mlx4_en_destroy_tx_ring(priv,
2185                                                         &priv->tx_ring[t][i]);
2186                         if (priv->tx_cq[t][i])
2187                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2188                 }
2189         }
2190         return -ENOMEM;
2191 }
2192
2193
2194 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2195                              struct mlx4_en_priv *src,
2196                              struct mlx4_en_port_profile *prof)
2197 {
2198         int t;
2199
2200         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2201                sizeof(dst->hwtstamp_config));
2202         dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2203         dst->rx_ring_num = prof->rx_ring_num;
2204         dst->flags = prof->flags;
2205         dst->mdev = src->mdev;
2206         dst->port = src->port;
2207         dst->dev = src->dev;
2208         dst->prof = prof;
2209         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2210                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2211
2212         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2213                 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2214                 if (!dst->tx_ring_num[t])
2215                         continue;
2216
2217                 dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2218                                           sizeof(struct mlx4_en_tx_ring *),
2219                                           GFP_KERNEL);
2220                 if (!dst->tx_ring[t])
2221                         goto err_free_tx;
2222
2223                 dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2224                                         sizeof(struct mlx4_en_cq *),
2225                                         GFP_KERNEL);
2226                 if (!dst->tx_cq[t]) {
2227                         kfree(dst->tx_ring[t]);
2228                         goto err_free_tx;
2229                 }
2230         }
2231
2232         return 0;
2233
2234 err_free_tx:
2235         while (t--) {
2236                 kfree(dst->tx_ring[t]);
2237                 kfree(dst->tx_cq[t]);
2238         }
2239         return -ENOMEM;
2240 }
2241
2242 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2243                                 struct mlx4_en_priv *src)
2244 {
2245         int t;
2246         memcpy(dst->rx_ring, src->rx_ring,
2247                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2248         memcpy(dst->rx_cq, src->rx_cq,
2249                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2250         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2251                sizeof(dst->hwtstamp_config));
2252         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2253                 dst->tx_ring_num[t] = src->tx_ring_num[t];
2254                 dst->tx_ring[t] = src->tx_ring[t];
2255                 dst->tx_cq[t] = src->tx_cq[t];
2256         }
2257         dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2258         dst->rx_ring_num = src->rx_ring_num;
2259         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2260 }
2261
2262 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2263                                 struct mlx4_en_priv *tmp,
2264                                 struct mlx4_en_port_profile *prof,
2265                                 bool carry_xdp_prog)
2266 {
2267         struct bpf_prog *xdp_prog;
2268         int i, t;
2269
2270         mlx4_en_copy_priv(tmp, priv, prof);
2271
2272         if (mlx4_en_alloc_resources(tmp)) {
2273                 en_warn(priv,
2274                         "%s: Resource allocation failed, using previous configuration\n",
2275                         __func__);
2276                 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2277                         kfree(tmp->tx_ring[t]);
2278                         kfree(tmp->tx_cq[t]);
2279                 }
2280                 return -ENOMEM;
2281         }
2282
2283         /* All rx_rings has the same xdp_prog.  Pick the first one. */
2284         xdp_prog = rcu_dereference_protected(
2285                 priv->rx_ring[0]->xdp_prog,
2286                 lockdep_is_held(&priv->mdev->state_lock));
2287
2288         if (xdp_prog && carry_xdp_prog) {
2289                 xdp_prog = bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2290                 if (IS_ERR(xdp_prog)) {
2291                         mlx4_en_free_resources(tmp);
2292                         return PTR_ERR(xdp_prog);
2293                 }
2294                 for (i = 0; i < tmp->rx_ring_num; i++)
2295                         rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2296                                            xdp_prog);
2297         }
2298
2299         return 0;
2300 }
2301
2302 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2303                                     struct mlx4_en_priv *tmp)
2304 {
2305         mlx4_en_free_resources(priv);
2306         mlx4_en_update_priv(priv, tmp);
2307 }
2308
2309 void mlx4_en_destroy_netdev(struct net_device *dev)
2310 {
2311         struct mlx4_en_priv *priv = netdev_priv(dev);
2312         struct mlx4_en_dev *mdev = priv->mdev;
2313
2314         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2315
2316         /* Unregister device - this will close the port if it was up */
2317         if (priv->registered) {
2318                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2319                                                               priv->port));
2320                 unregister_netdev(dev);
2321         }
2322
2323         if (priv->allocated)
2324                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2325
2326         cancel_delayed_work(&priv->stats_task);
2327         cancel_delayed_work(&priv->service_task);
2328         /* flush any pending task for this netdev */
2329         flush_workqueue(mdev->workqueue);
2330
2331         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2332                 mlx4_en_remove_timestamp(mdev);
2333
2334         /* Detach the netdev so tasks would not attempt to access it */
2335         mutex_lock(&mdev->state_lock);
2336         mdev->pndev[priv->port] = NULL;
2337         mdev->upper[priv->port] = NULL;
2338
2339 #ifdef CONFIG_RFS_ACCEL
2340         mlx4_en_cleanup_filters(priv);
2341 #endif
2342
2343         mlx4_en_free_resources(priv);
2344         mutex_unlock(&mdev->state_lock);
2345
2346         free_netdev(dev);
2347 }
2348
2349 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2350 {
2351         struct mlx4_en_priv *priv = netdev_priv(dev);
2352
2353         if (mtu > MLX4_EN_MAX_XDP_MTU) {
2354                 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2355                        mtu, MLX4_EN_MAX_XDP_MTU);
2356                 return false;
2357         }
2358
2359         return true;
2360 }
2361
2362 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2363 {
2364         struct mlx4_en_priv *priv = netdev_priv(dev);
2365         struct mlx4_en_dev *mdev = priv->mdev;
2366         int err = 0;
2367
2368         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2369                  dev->mtu, new_mtu);
2370
2371         if (priv->tx_ring_num[TX_XDP] &&
2372             !mlx4_en_check_xdp_mtu(dev, new_mtu))
2373                 return -EOPNOTSUPP;
2374
2375         dev->mtu = new_mtu;
2376
2377         if (netif_running(dev)) {
2378                 mutex_lock(&mdev->state_lock);
2379                 if (!mdev->device_up) {
2380                         /* NIC is probably restarting - let watchdog task reset
2381                          * the port */
2382                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2383                 } else {
2384                         mlx4_en_stop_port(dev, 1);
2385                         err = mlx4_en_start_port(dev);
2386                         if (err) {
2387                                 en_err(priv, "Failed restarting port:%d\n",
2388                                          priv->port);
2389                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2390                         }
2391                 }
2392                 mutex_unlock(&mdev->state_lock);
2393         }
2394         return 0;
2395 }
2396
2397 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2398 {
2399         struct mlx4_en_priv *priv = netdev_priv(dev);
2400         struct mlx4_en_dev *mdev = priv->mdev;
2401         struct hwtstamp_config config;
2402
2403         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2404                 return -EFAULT;
2405
2406         /* reserved for future extensions */
2407         if (config.flags)
2408                 return -EINVAL;
2409
2410         /* device doesn't support time stamping */
2411         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2412                 return -EINVAL;
2413
2414         /* TX HW timestamp */
2415         switch (config.tx_type) {
2416         case HWTSTAMP_TX_OFF:
2417         case HWTSTAMP_TX_ON:
2418                 break;
2419         default:
2420                 return -ERANGE;
2421         }
2422
2423         /* RX HW timestamp */
2424         switch (config.rx_filter) {
2425         case HWTSTAMP_FILTER_NONE:
2426                 break;
2427         case HWTSTAMP_FILTER_ALL:
2428         case HWTSTAMP_FILTER_SOME:
2429         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2430         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2431         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2432         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2433         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2434         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2435         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2436         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2437         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2438         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2439         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2440         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2441         case HWTSTAMP_FILTER_NTP_ALL:
2442                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2443                 break;
2444         default:
2445                 return -ERANGE;
2446         }
2447
2448         if (mlx4_en_reset_config(dev, config, dev->features)) {
2449                 config.tx_type = HWTSTAMP_TX_OFF;
2450                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2451         }
2452
2453         return copy_to_user(ifr->ifr_data, &config,
2454                             sizeof(config)) ? -EFAULT : 0;
2455 }
2456
2457 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2458 {
2459         struct mlx4_en_priv *priv = netdev_priv(dev);
2460
2461         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2462                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2463 }
2464
2465 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2466 {
2467         switch (cmd) {
2468         case SIOCSHWTSTAMP:
2469                 return mlx4_en_hwtstamp_set(dev, ifr);
2470         case SIOCGHWTSTAMP:
2471                 return mlx4_en_hwtstamp_get(dev, ifr);
2472         default:
2473                 return -EOPNOTSUPP;
2474         }
2475 }
2476
2477 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2478                                               netdev_features_t features)
2479 {
2480         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2481         struct mlx4_en_dev *mdev = en_priv->mdev;
2482
2483         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2484          * enable/disable make sure S-TAG flag is always in same state as
2485          * C-TAG.
2486          */
2487         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2488             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2489                 features |= NETIF_F_HW_VLAN_STAG_RX;
2490         else
2491                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2492
2493         return features;
2494 }
2495
2496 static int mlx4_en_set_features(struct net_device *netdev,
2497                 netdev_features_t features)
2498 {
2499         struct mlx4_en_priv *priv = netdev_priv(netdev);
2500         bool reset = false;
2501         int ret = 0;
2502
2503         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2504                 en_info(priv, "Turn %s RX-FCS\n",
2505                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2506                 reset = true;
2507         }
2508
2509         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2510                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2511
2512                 en_info(priv, "Turn %s RX-ALL\n",
2513                         ignore_fcs_value ? "ON" : "OFF");
2514                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2515                                               priv->port, ignore_fcs_value);
2516                 if (ret)
2517                         return ret;
2518         }
2519
2520         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2521                 en_info(priv, "Turn %s RX vlan strip offload\n",
2522                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2523                 reset = true;
2524         }
2525
2526         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2527                 en_info(priv, "Turn %s TX vlan strip offload\n",
2528                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2529
2530         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2531                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2532                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2533
2534         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2535                 en_info(priv, "Turn %s loopback\n",
2536                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2537                 mlx4_en_update_loopback_state(netdev, features);
2538         }
2539
2540         if (reset) {
2541                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2542                                            features);
2543                 if (ret)
2544                         return ret;
2545         }
2546
2547         return 0;
2548 }
2549
2550 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2551 {
2552         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2553         struct mlx4_en_dev *mdev = en_priv->mdev;
2554
2555         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac);
2556 }
2557
2558 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2559                                __be16 vlan_proto)
2560 {
2561         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2562         struct mlx4_en_dev *mdev = en_priv->mdev;
2563
2564         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2565                                 vlan_proto);
2566 }
2567
2568 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2569                                int max_tx_rate)
2570 {
2571         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2572         struct mlx4_en_dev *mdev = en_priv->mdev;
2573
2574         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2575                                 max_tx_rate);
2576 }
2577
2578 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2579 {
2580         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2581         struct mlx4_en_dev *mdev = en_priv->mdev;
2582
2583         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2584 }
2585
2586 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2587 {
2588         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2589         struct mlx4_en_dev *mdev = en_priv->mdev;
2590
2591         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2592 }
2593
2594 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2595 {
2596         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2597         struct mlx4_en_dev *mdev = en_priv->mdev;
2598
2599         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2600 }
2601
2602 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2603                                 struct ifla_vf_stats *vf_stats)
2604 {
2605         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2606         struct mlx4_en_dev *mdev = en_priv->mdev;
2607
2608         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2609 }
2610
2611 #define PORT_ID_BYTE_LEN 8
2612 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2613                                     struct netdev_phys_item_id *ppid)
2614 {
2615         struct mlx4_en_priv *priv = netdev_priv(dev);
2616         struct mlx4_dev *mdev = priv->mdev->dev;
2617         int i;
2618         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2619
2620         if (!phys_port_id)
2621                 return -EOPNOTSUPP;
2622
2623         ppid->id_len = sizeof(phys_port_id);
2624         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2625                 ppid->id[i] =  phys_port_id & 0xff;
2626                 phys_port_id >>= 8;
2627         }
2628         return 0;
2629 }
2630
2631 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2632 {
2633         int ret;
2634         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2635                                                  vxlan_add_task);
2636
2637         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2638         if (ret)
2639                 goto out;
2640
2641         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2642                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2643 out:
2644         if (ret) {
2645                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2646                 return;
2647         }
2648 }
2649
2650 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2651 {
2652         int ret;
2653         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2654                                                  vxlan_del_task);
2655         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2656                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2657         if (ret)
2658                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2659
2660         priv->vxlan_port = 0;
2661 }
2662
2663 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2664                                    struct udp_tunnel_info *ti)
2665 {
2666         struct mlx4_en_priv *priv = netdev_priv(dev);
2667         __be16 port = ti->port;
2668         __be16 current_port;
2669
2670         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2671                 return;
2672
2673         if (ti->sa_family != AF_INET)
2674                 return;
2675
2676         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2677                 return;
2678
2679         current_port = priv->vxlan_port;
2680         if (current_port && current_port != port) {
2681                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2682                         ntohs(current_port), ntohs(port));
2683                 return;
2684         }
2685
2686         priv->vxlan_port = port;
2687         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2688 }
2689
2690 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2691                                    struct udp_tunnel_info *ti)
2692 {
2693         struct mlx4_en_priv *priv = netdev_priv(dev);
2694         __be16 port = ti->port;
2695         __be16 current_port;
2696
2697         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2698                 return;
2699
2700         if (ti->sa_family != AF_INET)
2701                 return;
2702
2703         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2704                 return;
2705
2706         current_port = priv->vxlan_port;
2707         if (current_port != port) {
2708                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2709                 return;
2710         }
2711
2712         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2713 }
2714
2715 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2716                                                 struct net_device *dev,
2717                                                 netdev_features_t features)
2718 {
2719         features = vlan_features_check(skb, features);
2720         features = vxlan_features_check(skb, features);
2721
2722         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2723          * support inner IPv6 checksums and segmentation so  we need to
2724          * strip that feature if this is an IPv6 encapsulated frame.
2725          */
2726         if (skb->encapsulation &&
2727             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2728                 struct mlx4_en_priv *priv = netdev_priv(dev);
2729
2730                 if (!priv->vxlan_port ||
2731                     (ip_hdr(skb)->version != 4) ||
2732                     (udp_hdr(skb)->dest != priv->vxlan_port))
2733                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2734         }
2735
2736         return features;
2737 }
2738
2739 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2740 {
2741         struct mlx4_en_priv *priv = netdev_priv(dev);
2742         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2743         struct mlx4_update_qp_params params;
2744         int err;
2745
2746         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2747                 return -EOPNOTSUPP;
2748
2749         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2750         if (maxrate >> 12) {
2751                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2752                 params.rate_val  = maxrate / 1000;
2753         } else if (maxrate) {
2754                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2755                 params.rate_val  = maxrate;
2756         } else { /* zero serves to revoke the QP rate-limitation */
2757                 params.rate_unit = 0;
2758                 params.rate_val  = 0;
2759         }
2760
2761         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2762                              &params);
2763         return err;
2764 }
2765
2766 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2767 {
2768         struct mlx4_en_priv *priv = netdev_priv(dev);
2769         struct mlx4_en_dev *mdev = priv->mdev;
2770         struct mlx4_en_port_profile new_prof;
2771         struct bpf_prog *old_prog;
2772         struct mlx4_en_priv *tmp;
2773         int tx_changed = 0;
2774         int xdp_ring_num;
2775         int port_up = 0;
2776         int err;
2777         int i;
2778
2779         xdp_ring_num = prog ? priv->rx_ring_num : 0;
2780
2781         /* No need to reconfigure buffers when simply swapping the
2782          * program for a new one.
2783          */
2784         if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2785                 if (prog) {
2786                         prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2787                         if (IS_ERR(prog))
2788                                 return PTR_ERR(prog);
2789                 }
2790                 mutex_lock(&mdev->state_lock);
2791                 for (i = 0; i < priv->rx_ring_num; i++) {
2792                         old_prog = rcu_dereference_protected(
2793                                         priv->rx_ring[i]->xdp_prog,
2794                                         lockdep_is_held(&mdev->state_lock));
2795                         rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2796                         if (old_prog)
2797                                 bpf_prog_put(old_prog);
2798                 }
2799                 mutex_unlock(&mdev->state_lock);
2800                 return 0;
2801         }
2802
2803         if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2804                 return -EOPNOTSUPP;
2805
2806         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2807         if (!tmp)
2808                 return -ENOMEM;
2809
2810         if (prog) {
2811                 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2812                 if (IS_ERR(prog)) {
2813                         err = PTR_ERR(prog);
2814                         goto out;
2815                 }
2816         }
2817
2818         mutex_lock(&mdev->state_lock);
2819         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2820         new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2821
2822         if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2823                 tx_changed = 1;
2824                 new_prof.tx_ring_num[TX] =
2825                         MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2826                 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2827         }
2828
2829         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2830         if (err) {
2831                 if (prog)
2832                         bpf_prog_sub(prog, priv->rx_ring_num - 1);
2833                 goto unlock_out;
2834         }
2835
2836         if (priv->port_up) {
2837                 port_up = 1;
2838                 mlx4_en_stop_port(dev, 1);
2839         }
2840
2841         mlx4_en_safe_replace_resources(priv, tmp);
2842         if (tx_changed)
2843                 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2844
2845         for (i = 0; i < priv->rx_ring_num; i++) {
2846                 old_prog = rcu_dereference_protected(
2847                                         priv->rx_ring[i]->xdp_prog,
2848                                         lockdep_is_held(&mdev->state_lock));
2849                 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2850                 if (old_prog)
2851                         bpf_prog_put(old_prog);
2852         }
2853
2854         if (port_up) {
2855                 err = mlx4_en_start_port(dev);
2856                 if (err) {
2857                         en_err(priv, "Failed starting port %d for XDP change\n",
2858                                priv->port);
2859                         queue_work(mdev->workqueue, &priv->watchdog_task);
2860                 }
2861         }
2862
2863 unlock_out:
2864         mutex_unlock(&mdev->state_lock);
2865 out:
2866         kfree(tmp);
2867         return err;
2868 }
2869
2870 static u32 mlx4_xdp_query(struct net_device *dev)
2871 {
2872         struct mlx4_en_priv *priv = netdev_priv(dev);
2873         struct mlx4_en_dev *mdev = priv->mdev;
2874         const struct bpf_prog *xdp_prog;
2875         u32 prog_id = 0;
2876
2877         if (!priv->tx_ring_num[TX_XDP])
2878                 return prog_id;
2879
2880         mutex_lock(&mdev->state_lock);
2881         xdp_prog = rcu_dereference_protected(
2882                 priv->rx_ring[0]->xdp_prog,
2883                 lockdep_is_held(&mdev->state_lock));
2884         if (xdp_prog)
2885                 prog_id = xdp_prog->aux->id;
2886         mutex_unlock(&mdev->state_lock);
2887
2888         return prog_id;
2889 }
2890
2891 static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2892 {
2893         switch (xdp->command) {
2894         case XDP_SETUP_PROG:
2895                 return mlx4_xdp_set(dev, xdp->prog);
2896         case XDP_QUERY_PROG:
2897                 xdp->prog_id = mlx4_xdp_query(dev);
2898                 return 0;
2899         default:
2900                 return -EINVAL;
2901         }
2902 }
2903
2904 static const struct net_device_ops mlx4_netdev_ops = {
2905         .ndo_open               = mlx4_en_open,
2906         .ndo_stop               = mlx4_en_close,
2907         .ndo_start_xmit         = mlx4_en_xmit,
2908         .ndo_select_queue       = mlx4_en_select_queue,
2909         .ndo_get_stats64        = mlx4_en_get_stats64,
2910         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2911         .ndo_set_mac_address    = mlx4_en_set_mac,
2912         .ndo_validate_addr      = eth_validate_addr,
2913         .ndo_change_mtu         = mlx4_en_change_mtu,
2914         .ndo_do_ioctl           = mlx4_en_ioctl,
2915         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2916         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2917         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2918         .ndo_set_features       = mlx4_en_set_features,
2919         .ndo_fix_features       = mlx4_en_fix_features,
2920         .ndo_setup_tc           = __mlx4_en_setup_tc,
2921 #ifdef CONFIG_RFS_ACCEL
2922         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2923 #endif
2924         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2925         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2926         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2927         .ndo_features_check     = mlx4_en_features_check,
2928         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2929         .ndo_bpf                = mlx4_xdp,
2930 };
2931
2932 static const struct net_device_ops mlx4_netdev_ops_master = {
2933         .ndo_open               = mlx4_en_open,
2934         .ndo_stop               = mlx4_en_close,
2935         .ndo_start_xmit         = mlx4_en_xmit,
2936         .ndo_select_queue       = mlx4_en_select_queue,
2937         .ndo_get_stats64        = mlx4_en_get_stats64,
2938         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2939         .ndo_set_mac_address    = mlx4_en_set_mac,
2940         .ndo_validate_addr      = eth_validate_addr,
2941         .ndo_change_mtu         = mlx4_en_change_mtu,
2942         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2943         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2944         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2945         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2946         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2947         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2948         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2949         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2950         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2951         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2952         .ndo_set_features       = mlx4_en_set_features,
2953         .ndo_fix_features       = mlx4_en_fix_features,
2954         .ndo_setup_tc           = __mlx4_en_setup_tc,
2955 #ifdef CONFIG_RFS_ACCEL
2956         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2957 #endif
2958         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2959         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2960         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2961         .ndo_features_check     = mlx4_en_features_check,
2962         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2963         .ndo_bpf                = mlx4_xdp,
2964 };
2965
2966 struct mlx4_en_bond {
2967         struct work_struct work;
2968         struct mlx4_en_priv *priv;
2969         int is_bonded;
2970         struct mlx4_port_map port_map;
2971 };
2972
2973 static void mlx4_en_bond_work(struct work_struct *work)
2974 {
2975         struct mlx4_en_bond *bond = container_of(work,
2976                                                      struct mlx4_en_bond,
2977                                                      work);
2978         int err = 0;
2979         struct mlx4_dev *dev = bond->priv->mdev->dev;
2980
2981         if (bond->is_bonded) {
2982                 if (!mlx4_is_bonded(dev)) {
2983                         err = mlx4_bond(dev);
2984                         if (err)
2985                                 en_err(bond->priv, "Fail to bond device\n");
2986                 }
2987                 if (!err) {
2988                         err = mlx4_port_map_set(dev, &bond->port_map);
2989                         if (err)
2990                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2991                                        bond->port_map.port1,
2992                                        bond->port_map.port2,
2993                                        err);
2994                 }
2995         } else if (mlx4_is_bonded(dev)) {
2996                 err = mlx4_unbond(dev);
2997                 if (err)
2998                         en_err(bond->priv, "Fail to unbond device\n");
2999         }
3000         dev_put(bond->priv->dev);
3001         kfree(bond);
3002 }
3003
3004 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
3005                                    u8 v2p_p1, u8 v2p_p2)
3006 {
3007         struct mlx4_en_bond *bond = NULL;
3008
3009         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
3010         if (!bond)
3011                 return -ENOMEM;
3012
3013         INIT_WORK(&bond->work, mlx4_en_bond_work);
3014         bond->priv = priv;
3015         bond->is_bonded = is_bonded;
3016         bond->port_map.port1 = v2p_p1;
3017         bond->port_map.port2 = v2p_p2;
3018         dev_hold(priv->dev);
3019         queue_work(priv->mdev->workqueue, &bond->work);
3020         return 0;
3021 }
3022
3023 int mlx4_en_netdev_event(struct notifier_block *this,
3024                          unsigned long event, void *ptr)
3025 {
3026         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
3027         u8 port = 0;
3028         struct mlx4_en_dev *mdev;
3029         struct mlx4_dev *dev;
3030         int i, num_eth_ports = 0;
3031         bool do_bond = true;
3032         struct mlx4_en_priv *priv;
3033         u8 v2p_port1 = 0;
3034         u8 v2p_port2 = 0;
3035
3036         if (!net_eq(dev_net(ndev), &init_net))
3037                 return NOTIFY_DONE;
3038
3039         mdev = container_of(this, struct mlx4_en_dev, nb);
3040         dev = mdev->dev;
3041
3042         /* Go into this mode only when two network devices set on two ports
3043          * of the same mlx4 device are slaves of the same bonding master
3044          */
3045         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
3046                 ++num_eth_ports;
3047                 if (!port && (mdev->pndev[i] == ndev))
3048                         port = i;
3049                 mdev->upper[i] = mdev->pndev[i] ?
3050                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
3051                 /* condition not met: network device is a slave */
3052                 if (!mdev->upper[i])
3053                         do_bond = false;
3054                 if (num_eth_ports < 2)
3055                         continue;
3056                 /* condition not met: same master */
3057                 if (mdev->upper[i] != mdev->upper[i-1])
3058                         do_bond = false;
3059         }
3060         /* condition not met: 2 salves */
3061         do_bond = (num_eth_ports ==  2) ? do_bond : false;
3062
3063         /* handle only events that come with enough info */
3064         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
3065                 return NOTIFY_DONE;
3066
3067         priv = netdev_priv(ndev);
3068         if (do_bond) {
3069                 struct netdev_notifier_bonding_info *notifier_info = ptr;
3070                 struct netdev_bonding_info *bonding_info =
3071                         &notifier_info->bonding_info;
3072
3073                 /* required mode 1, 2 or 4 */
3074                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
3075                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
3076                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
3077                         do_bond = false;
3078
3079                 /* require exactly 2 slaves */
3080                 if (bonding_info->master.num_slaves != 2)
3081                         do_bond = false;
3082
3083                 /* calc v2p */
3084                 if (do_bond) {
3085                         if (bonding_info->master.bond_mode ==
3086                             BOND_MODE_ACTIVEBACKUP) {
3087                                 /* in active-backup mode virtual ports are
3088                                  * mapped to the physical port of the active
3089                                  * slave */
3090                                 if (bonding_info->slave.state ==
3091                                     BOND_STATE_BACKUP) {
3092                                         if (port == 1) {
3093                                                 v2p_port1 = 2;
3094                                                 v2p_port2 = 2;
3095                                         } else {
3096                                                 v2p_port1 = 1;
3097                                                 v2p_port2 = 1;
3098                                         }
3099                                 } else { /* BOND_STATE_ACTIVE */
3100                                         if (port == 1) {
3101                                                 v2p_port1 = 1;
3102                                                 v2p_port2 = 1;
3103                                         } else {
3104                                                 v2p_port1 = 2;
3105                                                 v2p_port2 = 2;
3106                                         }
3107                                 }
3108                         } else { /* Active-Active */
3109                                 /* in active-active mode a virtual port is
3110                                  * mapped to the native physical port if and only
3111                                  * if the physical port is up */
3112                                 __s8 link = bonding_info->slave.link;
3113
3114                                 if (port == 1)
3115                                         v2p_port2 = 2;
3116                                 else
3117                                         v2p_port1 = 1;
3118                                 if ((link == BOND_LINK_UP) ||
3119                                     (link == BOND_LINK_FAIL)) {
3120                                         if (port == 1)
3121                                                 v2p_port1 = 1;
3122                                         else
3123                                                 v2p_port2 = 2;
3124                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3125                                         if (port == 1)
3126                                                 v2p_port1 = 2;
3127                                         else
3128                                                 v2p_port2 = 1;
3129                                 }
3130                         }
3131                 }
3132         }
3133
3134         mlx4_en_queue_bond_work(priv, do_bond,
3135                                 v2p_port1, v2p_port2);
3136
3137         return NOTIFY_DONE;
3138 }
3139
3140 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3141                                      struct mlx4_en_stats_bitmap *stats_bitmap,
3142                                      u8 rx_ppp, u8 rx_pause,
3143                                      u8 tx_ppp, u8 tx_pause)
3144 {
3145         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3146
3147         if (!mlx4_is_slave(dev) &&
3148             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3149                 mutex_lock(&stats_bitmap->mutex);
3150                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3151
3152                 if (rx_ppp)
3153                         bitmap_set(stats_bitmap->bitmap, last_i,
3154                                    NUM_FLOW_PRIORITY_STATS_RX);
3155                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3156
3157                 if (rx_pause && !(rx_ppp))
3158                         bitmap_set(stats_bitmap->bitmap, last_i,
3159                                    NUM_FLOW_STATS_RX);
3160                 last_i += NUM_FLOW_STATS_RX;
3161
3162                 if (tx_ppp)
3163                         bitmap_set(stats_bitmap->bitmap, last_i,
3164                                    NUM_FLOW_PRIORITY_STATS_TX);
3165                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3166
3167                 if (tx_pause && !(tx_ppp))
3168                         bitmap_set(stats_bitmap->bitmap, last_i,
3169                                    NUM_FLOW_STATS_TX);
3170                 last_i += NUM_FLOW_STATS_TX;
3171
3172                 mutex_unlock(&stats_bitmap->mutex);
3173         }
3174 }
3175
3176 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3177                               struct mlx4_en_stats_bitmap *stats_bitmap,
3178                               u8 rx_ppp, u8 rx_pause,
3179                               u8 tx_ppp, u8 tx_pause)
3180 {
3181         int last_i = 0;
3182
3183         mutex_init(&stats_bitmap->mutex);
3184         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3185
3186         if (mlx4_is_slave(dev)) {
3187                 bitmap_set(stats_bitmap->bitmap, last_i +
3188                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3189                 bitmap_set(stats_bitmap->bitmap, last_i +
3190                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3191                 bitmap_set(stats_bitmap->bitmap, last_i +
3192                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3193                 bitmap_set(stats_bitmap->bitmap, last_i +
3194                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3195                 bitmap_set(stats_bitmap->bitmap, last_i +
3196                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3197                 bitmap_set(stats_bitmap->bitmap, last_i +
3198                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3199         } else {
3200                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3201         }
3202         last_i += NUM_MAIN_STATS;
3203
3204         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3205         last_i += NUM_PORT_STATS;
3206
3207         if (mlx4_is_master(dev))
3208                 bitmap_set(stats_bitmap->bitmap, last_i,
3209                            NUM_PF_STATS);
3210         last_i += NUM_PF_STATS;
3211
3212         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3213                                         rx_ppp, rx_pause,
3214                                         tx_ppp, tx_pause);
3215         last_i += NUM_FLOW_STATS;
3216
3217         if (!mlx4_is_slave(dev))
3218                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3219         last_i += NUM_PKT_STATS;
3220
3221         bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3222         last_i += NUM_XDP_STATS;
3223
3224         if (!mlx4_is_slave(dev))
3225                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS);
3226         last_i += NUM_PHY_STATS;
3227 }
3228
3229 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3230                         struct mlx4_en_port_profile *prof)
3231 {
3232         struct net_device *dev;
3233         struct mlx4_en_priv *priv;
3234         int i, t;
3235         int err;
3236
3237         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3238                                  MAX_TX_RINGS, MAX_RX_RINGS);
3239         if (dev == NULL)
3240                 return -ENOMEM;
3241
3242         netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3243         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3244
3245         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3246         dev->dev_port = port - 1;
3247
3248         /*
3249          * Initialize driver private data
3250          */
3251
3252         priv = netdev_priv(dev);
3253         memset(priv, 0, sizeof(struct mlx4_en_priv));
3254         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3255         spin_lock_init(&priv->stats_lock);
3256         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3257         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3258         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3259         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3260         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3261         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3262         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3263 #ifdef CONFIG_RFS_ACCEL
3264         INIT_LIST_HEAD(&priv->filters);
3265         spin_lock_init(&priv->filters_lock);
3266 #endif
3267
3268         priv->dev = dev;
3269         priv->mdev = mdev;
3270         priv->ddev = &mdev->pdev->dev;
3271         priv->prof = prof;
3272         priv->port = port;
3273         priv->port_up = false;
3274         priv->flags = prof->flags;
3275         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3276         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3277                         MLX4_WQE_CTRL_SOLICITED);
3278         priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3279         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3280         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3281
3282         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3283                 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3284                 if (!priv->tx_ring_num[t])
3285                         continue;
3286
3287                 priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3288                                            sizeof(struct mlx4_en_tx_ring *),
3289                                            GFP_KERNEL);
3290                 if (!priv->tx_ring[t]) {
3291                         err = -ENOMEM;
3292                         goto out;
3293                 }
3294                 priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3295                                          sizeof(struct mlx4_en_cq *),
3296                                          GFP_KERNEL);
3297                 if (!priv->tx_cq[t]) {
3298                         err = -ENOMEM;
3299                         goto out;
3300                 }
3301         }
3302         priv->rx_ring_num = prof->rx_ring_num;
3303         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3304         priv->cqe_size = mdev->dev->caps.cqe_size;
3305         priv->mac_index = -1;
3306         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3307 #ifdef CONFIG_MLX4_EN_DCB
3308         if (!mlx4_is_slave(priv->mdev->dev)) {
3309                 u8 prio;
3310
3311                 for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3312                         priv->ets.prio_tc[prio] = prio;
3313                         priv->ets.tc_tsa[prio]  = IEEE_8021QAZ_TSA_VENDOR;
3314                 }
3315
3316                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3317                         DCB_CAP_DCBX_VER_IEEE;
3318                 priv->flags |= MLX4_EN_DCB_ENABLED;
3319                 priv->cee_config.pfc_state = false;
3320
3321                 for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3322                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3323
3324                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3325                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3326                 } else {
3327                         en_info(priv, "enabling only PFC DCB ops\n");
3328                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3329                 }
3330         }
3331 #endif
3332
3333         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3334                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3335
3336         /* Query for default mac and max mtu */
3337         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3338
3339         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3340             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3341                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3342
3343         /* Set default MAC */
3344         dev->addr_len = ETH_ALEN;
3345         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3346         if (!is_valid_ether_addr(dev->dev_addr)) {
3347                 en_err(priv, "Port: %d, invalid mac burned: %pM, quitting\n",
3348                        priv->port, dev->dev_addr);
3349                 err = -EINVAL;
3350                 goto out;
3351         } else if (mlx4_is_slave(priv->mdev->dev) &&
3352                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3353                 /* Random MAC was assigned in mlx4_slave_cap
3354                  * in mlx4_core module
3355                  */
3356                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3357                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3358         }
3359
3360         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3361
3362         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3363                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3364         err = mlx4_en_alloc_resources(priv);
3365         if (err)
3366                 goto out;
3367
3368         /* Initialize time stamping config */
3369         priv->hwtstamp_config.flags = 0;
3370         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3371         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3372
3373         /* Allocate page for receive rings */
3374         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3375                                 MLX4_EN_PAGE_SIZE);
3376         if (err) {
3377                 en_err(priv, "Failed to allocate page for rx qps\n");
3378                 goto out;
3379         }
3380         priv->allocated = 1;
3381
3382         /*
3383          * Initialize netdev entry points
3384          */
3385         if (mlx4_is_master(priv->mdev->dev))
3386                 dev->netdev_ops = &mlx4_netdev_ops_master;
3387         else
3388                 dev->netdev_ops = &mlx4_netdev_ops;
3389         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3390         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3391         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3392
3393         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3394
3395         /*
3396          * Set driver features
3397          */
3398         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3399         if (mdev->LSO_support)
3400                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3401
3402         if (mdev->dev->caps.tunnel_offload_mode ==
3403             MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3404                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3405                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3406                                     NETIF_F_GSO_PARTIAL;
3407                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3408                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3409                                     NETIF_F_GSO_PARTIAL;
3410                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3411                 dev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
3412                                        NETIF_F_RXCSUM |
3413                                        NETIF_F_TSO | NETIF_F_TSO6 |
3414                                        NETIF_F_GSO_UDP_TUNNEL |
3415                                        NETIF_F_GSO_UDP_TUNNEL_CSUM |
3416                                        NETIF_F_GSO_PARTIAL;
3417         }
3418
3419         dev->vlan_features = dev->hw_features;
3420
3421         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3422         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3423                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3424                         NETIF_F_HW_VLAN_CTAG_FILTER;
3425         dev->hw_features |= NETIF_F_LOOPBACK |
3426                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3427
3428         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3429                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3430                         NETIF_F_HW_VLAN_STAG_FILTER;
3431                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3432         }
3433
3434         if (mlx4_is_slave(mdev->dev)) {
3435                 bool vlan_offload_disabled;
3436                 int phv;
3437
3438                 err = get_phv_bit(mdev->dev, port, &phv);
3439                 if (!err && phv) {
3440                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3441                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3442                 }
3443                 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3444                                                         &vlan_offload_disabled);
3445                 if (!err && vlan_offload_disabled) {
3446                         dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3447                                               NETIF_F_HW_VLAN_CTAG_RX |
3448                                               NETIF_F_HW_VLAN_STAG_TX |
3449                                               NETIF_F_HW_VLAN_STAG_RX);
3450                         dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3451                                            NETIF_F_HW_VLAN_CTAG_RX |
3452                                            NETIF_F_HW_VLAN_STAG_TX |
3453                                            NETIF_F_HW_VLAN_STAG_RX);
3454                 }
3455         } else {
3456                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3457                     !(mdev->dev->caps.flags2 &
3458                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3459                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3460         }
3461
3462         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3463                 dev->hw_features |= NETIF_F_RXFCS;
3464
3465         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3466                 dev->hw_features |= NETIF_F_RXALL;
3467
3468         if (mdev->dev->caps.steering_mode ==
3469             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3470             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3471                 dev->hw_features |= NETIF_F_NTUPLE;
3472
3473         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3474                 dev->priv_flags |= IFF_UNICAST_FLT;
3475
3476         /* Setting a default hash function value */
3477         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3478                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3479         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3480                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3481         } else {
3482                 en_warn(priv,
3483                         "No RSS hash capabilities exposed, using Toeplitz\n");
3484                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3485         }
3486
3487         /* MTU range: 68 - hw-specific max */
3488         dev->min_mtu = ETH_MIN_MTU;
3489         dev->max_mtu = priv->max_mtu;
3490
3491         mdev->pndev[port] = dev;
3492         mdev->upper[port] = NULL;
3493
3494         netif_carrier_off(dev);
3495         mlx4_en_set_default_moderation(priv);
3496
3497         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3498         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3499
3500         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3501
3502         /* Configure port */
3503         mlx4_en_calc_rx_buf(dev);
3504         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3505                                     priv->rx_skb_size + ETH_FCS_LEN,
3506                                     prof->tx_pause, prof->tx_ppp,
3507                                     prof->rx_pause, prof->rx_ppp);
3508         if (err) {
3509                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3510                        priv->port, err);
3511                 goto out;
3512         }
3513
3514         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3515                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3516                 if (err) {
3517                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3518                                err);
3519                         goto out;
3520                 }
3521         }
3522
3523         /* Init port */
3524         en_warn(priv, "Initializing port\n");
3525         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3526         if (err) {
3527                 en_err(priv, "Failed Initializing port\n");
3528                 goto out;
3529         }
3530         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3531
3532         /* Initialize time stamp mechanism */
3533         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3534                 mlx4_en_init_timestamp(mdev);
3535
3536         queue_delayed_work(mdev->workqueue, &priv->service_task,
3537                            SERVICE_TASK_DELAY);
3538
3539         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3540                                  mdev->profile.prof[priv->port].rx_ppp,
3541                                  mdev->profile.prof[priv->port].rx_pause,
3542                                  mdev->profile.prof[priv->port].tx_ppp,
3543                                  mdev->profile.prof[priv->port].tx_pause);
3544
3545         err = register_netdev(dev);
3546         if (err) {
3547                 en_err(priv, "Netdev registration failed for port %d\n", port);
3548                 goto out;
3549         }
3550
3551         priv->registered = 1;
3552         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3553                                   dev);
3554
3555         return 0;
3556
3557 out:
3558         mlx4_en_destroy_netdev(dev);
3559         return err;
3560 }
3561
3562 int mlx4_en_reset_config(struct net_device *dev,
3563                          struct hwtstamp_config ts_config,
3564                          netdev_features_t features)
3565 {
3566         struct mlx4_en_priv *priv = netdev_priv(dev);
3567         struct mlx4_en_dev *mdev = priv->mdev;
3568         struct mlx4_en_port_profile new_prof;
3569         struct mlx4_en_priv *tmp;
3570         int port_up = 0;
3571         int err = 0;
3572
3573         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3574             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3575             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3576             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3577                 return 0; /* Nothing to change */
3578
3579         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3580             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3581             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3582                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3583                 return -EINVAL;
3584         }
3585
3586         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3587         if (!tmp)
3588                 return -ENOMEM;
3589
3590         mutex_lock(&mdev->state_lock);
3591
3592         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3593         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3594
3595         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3596         if (err)
3597                 goto out;
3598
3599         if (priv->port_up) {
3600                 port_up = 1;
3601                 mlx4_en_stop_port(dev, 1);
3602         }
3603
3604         mlx4_en_safe_replace_resources(priv, tmp);
3605
3606         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3607                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3608                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3609                 else
3610                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3611         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3612                 /* RX time-stamping is OFF, update the RX vlan offload
3613                  * to the latest wanted state
3614                  */
3615                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3616                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3617                 else
3618                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3619         }
3620
3621         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3622                 if (features & NETIF_F_RXFCS)
3623                         dev->features |= NETIF_F_RXFCS;
3624                 else
3625                         dev->features &= ~NETIF_F_RXFCS;
3626         }
3627
3628         /* RX vlan offload and RX time-stamping can't co-exist !
3629          * Regardless of the caller's choice,
3630          * Turn Off RX vlan offload in case of time-stamping is ON
3631          */
3632         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3633                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3634                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3635                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3636         }
3637
3638         if (port_up) {
3639                 err = mlx4_en_start_port(dev);
3640                 if (err)
3641                         en_err(priv, "Failed starting port\n");
3642         }
3643
3644 out:
3645         mutex_unlock(&mdev->state_lock);
3646         kfree(tmp);
3647         if (!err)
3648                 netdev_features_change(dev);
3649         return err;
3650 }