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/busy_poll.h>
  43 #include <net/vxlan.h>
  44 #include <net/devlink.h>
  45
  46 #include <linux/mlx4/driver.h>
  47 #include <linux/mlx4/device.h>
  48 #include <linux/mlx4/cmd.h>
  49 #include <linux/mlx4/cq.h>
  50
  51 #include "mlx4_en.h"
  52 #include "en_port.h"
  53
  54 #define MLX4_EN_MAX_XDP_MTU ((int)(PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) - \
  55                                    XDP_PACKET_HEADROOM))
  56
  57 int mlx4_en_setup_tc(struct net_device *dev, u8 up)
  58 {
  59         struct mlx4_en_priv *priv = netdev_priv(dev);
  60         int i;
  61         unsigned int offset = 0;
  62
  63         if (up && up != MLX4_EN_NUM_UP_HIGH)
  64                 return -EINVAL;
  65
  66         netdev_set_num_tc(dev, up);
  67         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
  68         /* Partition Tx queues evenly amongst UP's */
  69         for (i = 0; i < up; i++) {
  70                 netdev_set_tc_queue(dev, i, priv->num_tx_rings_p_up, offset);
  71                 offset += priv->num_tx_rings_p_up;
  72         }
  73
  74 #ifdef CONFIG_MLX4_EN_DCB
  75         if (!mlx4_is_slave(priv->mdev->dev)) {
  76                 if (up) {
  77                         if (priv->dcbx_cap)
  78                                 priv->flags |= MLX4_EN_FLAG_DCB_ENABLED;
  79                 } else {
  80                         priv->flags &= ~MLX4_EN_FLAG_DCB_ENABLED;
  81                         priv->cee_config.pfc_state = false;
  82                 }
  83         }
  84 #endif /* CONFIG_MLX4_EN_DCB */
  85
  86         return 0;
  87 }
  88
  89 int mlx4_en_alloc_tx_queue_per_tc(struct net_device *dev, u8 tc)
  90 {
  91         struct mlx4_en_priv *priv = netdev_priv(dev);
  92         struct mlx4_en_dev *mdev = priv->mdev;
  93         struct mlx4_en_port_profile new_prof;
  94         struct mlx4_en_priv *tmp;
  95         int port_up = 0;
  96         int err = 0;
  97
  98         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
  99         if (!tmp)
 100                 return -ENOMEM;
 101
 102         mutex_lock(&mdev->state_lock);
 103         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
 104         new_prof.num_up = (tc == 0) ? MLX4_EN_NUM_UP_LOW :
 105                                       MLX4_EN_NUM_UP_HIGH;
 106         new_prof.tx_ring_num[TX] = new_prof.num_tx_rings_p_up *
 107                                    new_prof.num_up;
 108         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
 109         if (err)
 110                 goto out;
 111
 112         if (priv->port_up) {
 113                 port_up = 1;
 114                 mlx4_en_stop_port(dev, 1);
 115         }
 116
 117         mlx4_en_safe_replace_resources(priv, tmp);
 118         if (port_up) {
 119                 err = mlx4_en_start_port(dev);
 120                 if (err) {
 121                         en_err(priv, "Failed starting port for setup TC\n");
 122                         goto out;
 123                 }
 124         }
 125
 126         err = mlx4_en_setup_tc(dev, tc);
 127 out:
 128         mutex_unlock(&mdev->state_lock);
 129         kfree(tmp);
 130         return err;
 131 }
 132
 133 static int __mlx4_en_setup_tc(struct net_device *dev, enum tc_setup_type type,
 134                               void *type_data)
 135 {
 136         struct tc_mqprio_qopt *mqprio = type_data;
 137
 138         if (type != TC_SETUP_QDISC_MQPRIO)
 139                 return -EOPNOTSUPP;
 140
 141         if (mqprio->num_tc && mqprio->num_tc != MLX4_EN_NUM_UP_HIGH)
 142                 return -EINVAL;
 143
 144         mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
 145
 146         return mlx4_en_alloc_tx_queue_per_tc(dev, mqprio->num_tc);
 147 }
 148
 149 #ifdef CONFIG_RFS_ACCEL
 150
 151 struct mlx4_en_filter {
 152         struct list_head next;
 153         struct work_struct work;
 154
 155         u8     ip_proto;
 156         __be32 src_ip;
 157         __be32 dst_ip;
 158         __be16 src_port;
 159         __be16 dst_port;
 160
 161         int rxq_index;
 162         struct mlx4_en_priv *priv;
 163         u32 flow_id;                    /* RFS infrastructure id */
 164         int id;                         /* mlx4_en driver id */
 165         u64 reg_id;                     /* Flow steering API id */
 166         u8 activated;                   /* Used to prevent expiry before filter
 167                                          * is attached
 168                                          */
 169         struct hlist_node filter_chain;
 170 };
 171
 172 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 173
 174 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 175 {
 176         switch (ip_proto) {
 177         case IPPROTO_UDP:
 178                 return MLX4_NET_TRANS_RULE_ID_UDP;
 179         case IPPROTO_TCP:
 180                 return MLX4_NET_TRANS_RULE_ID_TCP;
 181         default:
 182                 return MLX4_NET_TRANS_RULE_NUM;
 183         }
 184 };
 185
 186 /* Must not acquire state_lock, as its corresponding work_sync
 187  * is done under it.
 188  */
 189 static void mlx4_en_filter_work(struct work_struct *work)
 190 {
 191         struct mlx4_en_filter *filter = container_of(work,
 192                                                      struct mlx4_en_filter,
 193                                                      work);
 194         struct mlx4_en_priv *priv = filter->priv;
 195         struct mlx4_spec_list spec_tcp_udp = {
 196                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 197                 {
 198                         .tcp_udp = {
 199                                 .dst_port = filter->dst_port,
 200                                 .dst_port_msk = (__force __be16)-1,
 201                                 .src_port = filter->src_port,
 202                                 .src_port_msk = (__force __be16)-1,
 203                         },
 204                 },
 205         };
 206         struct mlx4_spec_list spec_ip = {
 207                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 208                 {
 209                         .ipv4 = {
 210                                 .dst_ip = filter->dst_ip,
 211                                 .dst_ip_msk = (__force __be32)-1,
 212                                 .src_ip = filter->src_ip,
 213                                 .src_ip_msk = (__force __be32)-1,
 214                         },
 215                 },
 216         };
 217         struct mlx4_spec_list spec_eth = {
 218                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 219         };
 220         struct mlx4_net_trans_rule rule = {
 221                 .list = LIST_HEAD_INIT(rule.list),
 222                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 223                 .exclusive = 1,
 224                 .allow_loopback = 1,
 225                 .promisc_mode = MLX4_FS_REGULAR,
 226                 .port = priv->port,
 227                 .priority = MLX4_DOMAIN_RFS,
 228         };
 229         int rc;
 230         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 231
 232         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 233                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 234                         filter->ip_proto);
 235                 goto ignore;
 236         }
 237         list_add_tail(&spec_eth.list, &rule.list);
 238         list_add_tail(&spec_ip.list, &rule.list);
 239         list_add_tail(&spec_tcp_udp.list, &rule.list);
 240
 241         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 242         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 243         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 244
 245         filter->activated = 0;
 246
 247         if (filter->reg_id) {
 248                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 249                 if (rc && rc != -ENOENT)
 250                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 251         }
 252
 253         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 254         if (rc)
 255                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 256
 257 ignore:
 258         mlx4_en_filter_rfs_expire(priv);
 259
 260         filter->activated = 1;
 261 }
 262
 263 static inline struct hlist_head *
 264 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 265                    __be16 src_port, __be16 dst_port)
 266 {
 267         unsigned long l;
 268         int bucket_idx;
 269
 270         l = (__force unsigned long)src_port |
 271             ((__force unsigned long)dst_port << 2);
 272         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 273
 274         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 275
 276         return &priv->filter_hash[bucket_idx];
 277 }
 278
 279 static struct mlx4_en_filter *
 280 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 281                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 282                      __be16 dst_port, u32 flow_id)
 283 {
 284         struct mlx4_en_filter *filter = NULL;
 285
 286         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 287         if (!filter)
 288                 return NULL;
 289
 290         filter->priv = priv;
 291         filter->rxq_index = rxq_index;
 292         INIT_WORK(&filter->work, mlx4_en_filter_work);
 293
 294         filter->src_ip = src_ip;
 295         filter->dst_ip = dst_ip;
 296         filter->ip_proto = ip_proto;
 297         filter->src_port = src_port;
 298         filter->dst_port = dst_port;
 299
 300         filter->flow_id = flow_id;
 301
 302         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 303
 304         list_add_tail(&filter->next, &priv->filters);
 305         hlist_add_head(&filter->filter_chain,
 306                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 307                                           dst_port));
 308
 309         return filter;
 310 }
 311
 312 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 313 {
 314         struct mlx4_en_priv *priv = filter->priv;
 315         int rc;
 316
 317         list_del(&filter->next);
 318
 319         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 320         if (rc && rc != -ENOENT)
 321                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 322
 323         kfree(filter);
 324 }
 325
 326 static inline struct mlx4_en_filter *
 327 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 328                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 329 {
 330         struct mlx4_en_filter *filter;
 331         struct mlx4_en_filter *ret = NULL;
 332
 333         hlist_for_each_entry(filter,
 334                              filter_hash_bucket(priv, src_ip, dst_ip,
 335                                                 src_port, dst_port),
 336                              filter_chain) {
 337                 if (filter->src_ip == src_ip &&
 338                     filter->dst_ip == dst_ip &&
 339                     filter->ip_proto == ip_proto &&
 340                     filter->src_port == src_port &&
 341                     filter->dst_port == dst_port) {
 342                         ret = filter;
 343                         break;
 344                 }
 345         }
 346
 347         return ret;
 348 }
 349
 350 static int
 351 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 352                    u16 rxq_index, u32 flow_id)
 353 {
 354         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 355         struct mlx4_en_filter *filter;
 356         const struct iphdr *ip;
 357         const __be16 *ports;
 358         u8 ip_proto;
 359         __be32 src_ip;
 360         __be32 dst_ip;
 361         __be16 src_port;
 362         __be16 dst_port;
 363         int nhoff = skb_network_offset(skb);
 364         int ret = 0;
 365
 366         if (skb->protocol != htons(ETH_P_IP))
 367                 return -EPROTONOSUPPORT;
 368
 369         ip = (const struct iphdr *)(skb->data + nhoff);
 370         if (ip_is_fragment(ip))
 371                 return -EPROTONOSUPPORT;
 372
 373         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 374                 return -EPROTONOSUPPORT;
 375         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 376
 377         ip_proto = ip->protocol;
 378         src_ip = ip->saddr;
 379         dst_ip = ip->daddr;
 380         src_port = ports[0];
 381         dst_port = ports[1];
 382
 383         spin_lock_bh(&priv->filters_lock);
 384         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 385                                      src_port, dst_port);
 386         if (filter) {
 387                 if (filter->rxq_index == rxq_index)
 388                         goto out;
 389
 390                 filter->rxq_index = rxq_index;
 391         } else {
 392                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 393                                               src_ip, dst_ip, ip_proto,
 394                                               src_port, dst_port, flow_id);
 395                 if (!filter) {
 396                         ret = -ENOMEM;
 397                         goto err;
 398                 }
 399         }
 400
 401         queue_work(priv->mdev->workqueue, &filter->work);
 402
 403 out:
 404         ret = filter->id;
 405 err:
 406         spin_unlock_bh(&priv->filters_lock);
 407
 408         return ret;
 409 }
 410
 411 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 412 {
 413         struct mlx4_en_filter *filter, *tmp;
 414         LIST_HEAD(del_list);
 415
 416         spin_lock_bh(&priv->filters_lock);
 417         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 418                 list_move(&filter->next, &del_list);
 419                 hlist_del(&filter->filter_chain);
 420         }
 421         spin_unlock_bh(&priv->filters_lock);
 422
 423         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 424                 cancel_work_sync(&filter->work);
 425                 mlx4_en_filter_free(filter);
 426         }
 427 }
 428
 429 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 430 {
 431         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 432         LIST_HEAD(del_list);
 433         int i = 0;
 434
 435         spin_lock_bh(&priv->filters_lock);
 436         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 437                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 438                         break;
 439
 440                 if (filter->activated &&
 441                     !work_pending(&filter->work) &&
 442                     rps_may_expire_flow(priv->dev,
 443                                         filter->rxq_index, filter->flow_id,
 444                                         filter->id)) {
 445                         list_move(&filter->next, &del_list);
 446                         hlist_del(&filter->filter_chain);
 447                 } else
 448                         last_filter = filter;
 449
 450                 i++;
 451         }
 452
 453         if (last_filter && (&last_filter->next != priv->filters.next))
 454                 list_move(&priv->filters, &last_filter->next);
 455
 456         spin_unlock_bh(&priv->filters_lock);
 457
 458         list_for_each_entry_safe(filter, tmp, &del_list, next)
 459                 mlx4_en_filter_free(filter);
 460 }
 461 #endif
 462
 463 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 464                                    __be16 proto, u16 vid)
 465 {
 466         struct mlx4_en_priv *priv = netdev_priv(dev);
 467         struct mlx4_en_dev *mdev = priv->mdev;
 468         int err;
 469         int idx;
 470
 471         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 472
 473         set_bit(vid, priv->active_vlans);
 474
 475         /* Add VID to port VLAN filter */
 476         mutex_lock(&mdev->state_lock);
 477         if (mdev->device_up && priv->port_up) {
 478                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 479                 if (err) {
 480                         en_err(priv, "Failed configuring VLAN filter\n");
 481                         goto out;
 482                 }
 483         }
 484         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 485         if (err)
 486                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 487
 488 out:
 489         mutex_unlock(&mdev->state_lock);
 490         return err;
 491 }
 492
 493 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 494                                     __be16 proto, u16 vid)
 495 {
 496         struct mlx4_en_priv *priv = netdev_priv(dev);
 497         struct mlx4_en_dev *mdev = priv->mdev;
 498         int err = 0;
 499
 500         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 501
 502         clear_bit(vid, priv->active_vlans);
 503
 504         /* Remove VID from port VLAN filter */
 505         mutex_lock(&mdev->state_lock);
 506         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 507
 508         if (mdev->device_up && priv->port_up) {
 509                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 510                 if (err)
 511                         en_err(priv, "Failed configuring VLAN filter\n");
 512         }
 513         mutex_unlock(&mdev->state_lock);
 514
 515         return err;
 516 }
 517
 518 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 519 {
 520         int i;
 521         for (i = ETH_ALEN - 1; i >= 0; --i) {
 522                 dst_mac[i] = src_mac & 0xff;
 523                 src_mac >>= 8;
 524         }
 525         memset(&dst_mac[ETH_ALEN], 0, 2);
 526 }
 527
 528
 529 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 530                                     int qpn, u64 *reg_id)
 531 {
 532         int err;
 533
 534         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 535             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 536                 return 0; /* do nothing */
 537
 538         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 539                                     MLX4_DOMAIN_NIC, reg_id);
 540         if (err) {
 541                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 542                 return err;
 543         }
 544         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 545         return 0;
 546 }
 547
 548
 549 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 550                                 unsigned char *mac, int *qpn, u64 *reg_id)
 551 {
 552         struct mlx4_en_dev *mdev = priv->mdev;
 553         struct mlx4_dev *dev = mdev->dev;
 554         int err;
 555
 556         switch (dev->caps.steering_mode) {
 557         case MLX4_STEERING_MODE_B0: {
 558                 struct mlx4_qp qp;
 559                 u8 gid[16] = {0};
 560
 561                 qp.qpn = *qpn;
 562                 memcpy(&gid[10], mac, ETH_ALEN);
 563                 gid[5] = priv->port;
 564
 565                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 566                 break;
 567         }
 568         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 569                 struct mlx4_spec_list spec_eth = { {NULL} };
 570                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 571
 572                 struct mlx4_net_trans_rule rule = {
 573                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 574                         .exclusive = 0,
 575                         .allow_loopback = 1,
 576                         .promisc_mode = MLX4_FS_REGULAR,
 577                         .priority = MLX4_DOMAIN_NIC,
 578                 };
 579
 580                 rule.port = priv->port;
 581                 rule.qpn = *qpn;
 582                 INIT_LIST_HEAD(&rule.list);
 583
 584                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 585                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 586                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 587                 list_add_tail(&spec_eth.list, &rule.list);
 588
 589                 err = mlx4_flow_attach(dev, &rule, reg_id);
 590                 break;
 591         }
 592         default:
 593                 return -EINVAL;
 594         }
 595         if (err)
 596                 en_warn(priv, "Failed Attaching Unicast\n");
 597
 598         return err;
 599 }
 600
 601 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 602                                      unsigned char *mac, int qpn, u64 reg_id)
 603 {
 604         struct mlx4_en_dev *mdev = priv->mdev;
 605         struct mlx4_dev *dev = mdev->dev;
 606
 607         switch (dev->caps.steering_mode) {
 608         case MLX4_STEERING_MODE_B0: {
 609                 struct mlx4_qp qp;
 610                 u8 gid[16] = {0};
 611
 612                 qp.qpn = qpn;
 613                 memcpy(&gid[10], mac, ETH_ALEN);
 614                 gid[5] = priv->port;
 615
 616                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 617                 break;
 618         }
 619         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 620                 mlx4_flow_detach(dev, reg_id);
 621                 break;
 622         }
 623         default:
 624                 en_err(priv, "Invalid steering mode.\n");
 625         }
 626 }
 627
 628 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 629 {
 630         struct mlx4_en_dev *mdev = priv->mdev;
 631         struct mlx4_dev *dev = mdev->dev;
 632         int index = 0;
 633         int err = 0;
 634         int *qpn = &priv->base_qpn;
 635         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 636
 637         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 638                priv->dev->dev_addr);
 639         index = mlx4_register_mac(dev, priv->port, mac);
 640         if (index < 0) {
 641                 err = index;
 642                 en_err(priv, "Failed adding MAC: %pM\n",
 643                        priv->dev->dev_addr);
 644                 return err;
 645         }
 646
 647         en_info(priv, "Steering Mode %d\n", dev->caps.steering_mode);
 648
 649         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 650                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 651                 *qpn = base_qpn + index;
 652                 return 0;
 653         }
 654
 655         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP,
 656                                     MLX4_RES_USAGE_DRIVER);
 657         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 658         if (err) {
 659                 en_err(priv, "Failed to reserve qp for mac registration\n");
 660                 mlx4_unregister_mac(dev, priv->port, mac);
 661                 return err;
 662         }
 663
 664         return 0;
 665 }
 666
 667 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 668 {
 669         struct mlx4_en_dev *mdev = priv->mdev;
 670         struct mlx4_dev *dev = mdev->dev;
 671         int qpn = priv->base_qpn;
 672
 673         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 674                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 675                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 676                        priv->dev->dev_addr);
 677                 mlx4_unregister_mac(dev, priv->port, mac);
 678         } else {
 679                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 680                        priv->port, qpn);
 681                 mlx4_qp_release_range(dev, qpn, 1);
 682                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 683         }
 684 }
 685
 686 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 687                                unsigned char *new_mac, unsigned char *prev_mac)
 688 {
 689         struct mlx4_en_dev *mdev = priv->mdev;
 690         struct mlx4_dev *dev = mdev->dev;
 691         int err = 0;
 692         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 693
 694         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 695                 struct hlist_head *bucket;
 696                 unsigned int mac_hash;
 697                 struct mlx4_mac_entry *entry;
 698                 struct hlist_node *tmp;
 699                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 700
 701                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 702                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 703                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 704                                 mlx4_en_uc_steer_release(priv, entry->mac,
 705                                                          qpn, entry->reg_id);
 706                                 mlx4_unregister_mac(dev, priv->port,
 707                                                     prev_mac_u64);
 708                                 hlist_del_rcu(&entry->hlist);
 709                                 synchronize_rcu();
 710                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 711                                 entry->reg_id = 0;
 712                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 713                                 hlist_add_head_rcu(&entry->hlist,
 714                                                    &priv->mac_hash[mac_hash]);
 715                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 716                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 717                                                            &qpn,
 718                                                            &entry->reg_id);
 719                                 if (err)
 720                                         return err;
 721                                 if (priv->tunnel_reg_id) {
 722                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 723                                         priv->tunnel_reg_id = 0;
 724                                 }
 725                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 726                                                                &priv->tunnel_reg_id);
 727                                 return err;
 728                         }
 729                 }
 730                 return -EINVAL;
 731         }
 732
 733         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 734 }
 735
 736 static void mlx4_en_update_user_mac(struct mlx4_en_priv *priv,
 737                                     unsigned char new_mac[ETH_ALEN + 2])
 738 {
 739         struct mlx4_en_dev *mdev = priv->mdev;
 740         int err;
 741
 742         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_USER_MAC_EN))
 743                 return;
 744
 745         err = mlx4_SET_PORT_user_mac(mdev->dev, priv->port, new_mac);
 746         if (err)
 747                 en_err(priv, "Failed to pass user MAC(%pM) to Firmware for port %d, with error %d\n",
 748                        new_mac, priv->port, err);
 749 }
 750
 751 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 752                               unsigned char new_mac[ETH_ALEN + 2])
 753 {
 754         int err = 0;
 755
 756         if (priv->port_up) {
 757                 /* Remove old MAC and insert the new one */
 758                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 759                                           new_mac, priv->current_mac);
 760                 if (err)
 761                         en_err(priv, "Failed changing HW MAC address\n");
 762         } else
 763                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 764
 765         if (!err)
 766                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 767
 768         return err;
 769 }
 770
 771 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 772 {
 773         struct mlx4_en_priv *priv = netdev_priv(dev);
 774         struct mlx4_en_dev *mdev = priv->mdev;
 775         struct sockaddr *saddr = addr;
 776         unsigned char new_mac[ETH_ALEN + 2];
 777         int err;
 778
 779         if (!is_valid_ether_addr(saddr->sa_data))
 780                 return -EADDRNOTAVAIL;
 781
 782         mutex_lock(&mdev->state_lock);
 783         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 784         err = mlx4_en_do_set_mac(priv, new_mac);
 785         if (err)
 786                 goto out;
 787
 788         memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 789         mlx4_en_update_user_mac(priv, new_mac);
 790 out:
 791         mutex_unlock(&mdev->state_lock);
 792
 793         return err;
 794 }
 795
 796 static void mlx4_en_clear_list(struct net_device *dev)
 797 {
 798         struct mlx4_en_priv *priv = netdev_priv(dev);
 799         struct mlx4_en_mc_list *tmp, *mc_to_del;
 800
 801         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 802                 list_del(&mc_to_del->list);
 803                 kfree(mc_to_del);
 804         }
 805 }
 806
 807 static void mlx4_en_cache_mclist(struct net_device *dev)
 808 {
 809         struct mlx4_en_priv *priv = netdev_priv(dev);
 810         struct netdev_hw_addr *ha;
 811         struct mlx4_en_mc_list *tmp;
 812
 813         mlx4_en_clear_list(dev);
 814         netdev_for_each_mc_addr(ha, dev) {
 815                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 816                 if (!tmp) {
 817                         mlx4_en_clear_list(dev);
 818                         return;
 819                 }
 820                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 821                 list_add_tail(&tmp->list, &priv->mc_list);
 822         }
 823 }
 824
 825 static void update_mclist_flags(struct mlx4_en_priv *priv,
 826                                 struct list_head *dst,
 827                                 struct list_head *src)
 828 {
 829         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 830         bool found;
 831
 832         /* Find all the entries that should be removed from dst,
 833          * These are the entries that are not found in src
 834          */
 835         list_for_each_entry(dst_tmp, dst, list) {
 836                 found = false;
 837                 list_for_each_entry(src_tmp, src, list) {
 838                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 839                                 found = true;
 840                                 break;
 841                         }
 842                 }
 843                 if (!found)
 844                         dst_tmp->action = MCLIST_REM;
 845         }
 846
 847         /* Add entries that exist in src but not in dst
 848          * mark them as need to add
 849          */
 850         list_for_each_entry(src_tmp, src, list) {
 851                 found = false;
 852                 list_for_each_entry(dst_tmp, dst, list) {
 853                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 854                                 dst_tmp->action = MCLIST_NONE;
 855                                 found = true;
 856                                 break;
 857                         }
 858                 }
 859                 if (!found) {
 860                         new_mc = kmemdup(src_tmp,
 861                                          sizeof(struct mlx4_en_mc_list),
 862                                          GFP_KERNEL);
 863                         if (!new_mc)
 864                                 return;
 865
 866                         new_mc->action = MCLIST_ADD;
 867                         list_add_tail(&new_mc->list, dst);
 868                 }
 869         }
 870 }
 871
 872 static void mlx4_en_set_rx_mode(struct net_device *dev)
 873 {
 874         struct mlx4_en_priv *priv = netdev_priv(dev);
 875
 876         if (!priv->port_up)
 877                 return;
 878
 879         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 880 }
 881
 882 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 883                                      struct mlx4_en_dev *mdev)
 884 {
 885         int err = 0;
 886
 887         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 888                 if (netif_msg_rx_status(priv))
 889                         en_warn(priv, "Entering promiscuous mode\n");
 890                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 891
 892                 /* Enable promiscouos mode */
 893                 switch (mdev->dev->caps.steering_mode) {
 894                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 895                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 896                                                           priv->port,
 897                                                           priv->base_qpn,
 898                                                           MLX4_FS_ALL_DEFAULT);
 899                         if (err)
 900                                 en_err(priv, "Failed enabling promiscuous mode\n");
 901                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 902                         break;
 903
 904                 case MLX4_STEERING_MODE_B0:
 905                         err = mlx4_unicast_promisc_add(mdev->dev,
 906                                                        priv->base_qpn,
 907                                                        priv->port);
 908                         if (err)
 909                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 910
 911                         /* Add the default qp number as multicast
 912                          * promisc
 913                          */
 914                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 915                                 err = mlx4_multicast_promisc_add(mdev->dev,
 916                                                                  priv->base_qpn,
 917                                                                  priv->port);
 918                                 if (err)
 919                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 920                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 921                         }
 922                         break;
 923
 924                 case MLX4_STEERING_MODE_A0:
 925                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 926                                                      priv->port,
 927                                                      priv->base_qpn,
 928                                                      1);
 929                         if (err)
 930                                 en_err(priv, "Failed enabling promiscuous mode\n");
 931                         break;
 932                 }
 933
 934                 /* Disable port multicast filter (unconditionally) */
 935                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 936                                           0, MLX4_MCAST_DISABLE);
 937                 if (err)
 938                         en_err(priv, "Failed disabling multicast filter\n");
 939         }
 940 }
 941
 942 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 943                                        struct mlx4_en_dev *mdev)
 944 {
 945         int err = 0;
 946
 947         if (netif_msg_rx_status(priv))
 948                 en_warn(priv, "Leaving promiscuous mode\n");
 949         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 950
 951         /* Disable promiscouos mode */
 952         switch (mdev->dev->caps.steering_mode) {
 953         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 954                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 955                                                      priv->port,
 956                                                      MLX4_FS_ALL_DEFAULT);
 957                 if (err)
 958                         en_err(priv, "Failed disabling promiscuous mode\n");
 959                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 960                 break;
 961
 962         case MLX4_STEERING_MODE_B0:
 963                 err = mlx4_unicast_promisc_remove(mdev->dev,
 964                                                   priv->base_qpn,
 965                                                   priv->port);
 966                 if (err)
 967                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 968                 /* Disable Multicast promisc */
 969                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 970                         err = mlx4_multicast_promisc_remove(mdev->dev,
 971                                                             priv->base_qpn,
 972                                                             priv->port);
 973                         if (err)
 974                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 975                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 976                 }
 977                 break;
 978
 979         case MLX4_STEERING_MODE_A0:
 980                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 981                                              priv->port,
 982                                              priv->base_qpn, 0);
 983                 if (err)
 984                         en_err(priv, "Failed disabling promiscuous mode\n");
 985                 break;
 986         }
 987 }
 988
 989 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 990                                  struct net_device *dev,
 991                                  struct mlx4_en_dev *mdev)
 992 {
 993         struct mlx4_en_mc_list *mclist, *tmp;
 994         u64 mcast_addr = 0;
 995         u8 mc_list[16] = {0};
 996         int err = 0;
 997
 998         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 999         if (dev->flags & IFF_ALLMULTI) {
1000                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1001                                           0, MLX4_MCAST_DISABLE);
1002                 if (err)
1003                         en_err(priv, "Failed disabling multicast filter\n");
1004
1005                 /* Add the default qp number as multicast promisc */
1006                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
1007                         switch (mdev->dev->caps.steering_mode) {
1008                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1009                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
1010                                                                   priv->port,
1011                                                                   priv->base_qpn,
1012                                                                   MLX4_FS_MC_DEFAULT);
1013                                 break;
1014
1015                         case MLX4_STEERING_MODE_B0:
1016                                 err = mlx4_multicast_promisc_add(mdev->dev,
1017                                                                  priv->base_qpn,
1018                                                                  priv->port);
1019                                 break;
1020
1021                         case MLX4_STEERING_MODE_A0:
1022                                 break;
1023                         }
1024                         if (err)
1025                                 en_err(priv, "Failed entering multicast promisc mode\n");
1026                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
1027                 }
1028         } else {
1029                 /* Disable Multicast promisc */
1030                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1031                         switch (mdev->dev->caps.steering_mode) {
1032                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
1033                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
1034                                                                      priv->port,
1035                                                                      MLX4_FS_MC_DEFAULT);
1036                                 break;
1037
1038                         case MLX4_STEERING_MODE_B0:
1039                                 err = mlx4_multicast_promisc_remove(mdev->dev,
1040                                                                     priv->base_qpn,
1041                                                                     priv->port);
1042                                 break;
1043
1044                         case MLX4_STEERING_MODE_A0:
1045                                 break;
1046                         }
1047                         if (err)
1048                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
1049                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1050                 }
1051
1052                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1053                                           0, MLX4_MCAST_DISABLE);
1054                 if (err)
1055                         en_err(priv, "Failed disabling multicast filter\n");
1056
1057                 /* Flush mcast filter and init it with broadcast address */
1058                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
1059                                     1, MLX4_MCAST_CONFIG);
1060
1061                 /* Update multicast list - we cache all addresses so they won't
1062                  * change while HW is updated holding the command semaphor */
1063                 netif_addr_lock_bh(dev);
1064                 mlx4_en_cache_mclist(dev);
1065                 netif_addr_unlock_bh(dev);
1066                 list_for_each_entry(mclist, &priv->mc_list, list) {
1067                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
1068                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
1069                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
1070                 }
1071                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
1072                                           0, MLX4_MCAST_ENABLE);
1073                 if (err)
1074                         en_err(priv, "Failed enabling multicast filter\n");
1075
1076                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1077                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1078                         if (mclist->action == MCLIST_REM) {
1079                                 /* detach this address and delete from list */
1080                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1081                                 mc_list[5] = priv->port;
1082                                 err = mlx4_multicast_detach(mdev->dev,
1083                                                             priv->rss_map.indir_qp,
1084                                                             mc_list,
1085                                                             MLX4_PROT_ETH,
1086                                                             mclist->reg_id);
1087                                 if (err)
1088                                         en_err(priv, "Fail to detach multicast address\n");
1089
1090                                 if (mclist->tunnel_reg_id) {
1091                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1092                                         if (err)
1093                                                 en_err(priv, "Failed to detach multicast address\n");
1094                                 }
1095
1096                                 /* remove from list */
1097                                 list_del(&mclist->list);
1098                                 kfree(mclist);
1099                         } else if (mclist->action == MCLIST_ADD) {
1100                                 /* attach the address */
1101                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1102                                 /* needed for B0 steering support */
1103                                 mc_list[5] = priv->port;
1104                                 err = mlx4_multicast_attach(mdev->dev,
1105                                                             priv->rss_map.indir_qp,
1106                                                             mc_list,
1107                                                             priv->port, 0,
1108                                                             MLX4_PROT_ETH,
1109                                                             &mclist->reg_id);
1110                                 if (err)
1111                                         en_err(priv, "Fail to attach multicast address\n");
1112
1113                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1114                                                                &mclist->tunnel_reg_id);
1115                                 if (err)
1116                                         en_err(priv, "Failed to attach multicast address\n");
1117                         }
1118                 }
1119         }
1120 }
1121
1122 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1123                                  struct net_device *dev,
1124                                  struct mlx4_en_dev *mdev)
1125 {
1126         struct netdev_hw_addr *ha;
1127         struct mlx4_mac_entry *entry;
1128         struct hlist_node *tmp;
1129         bool found;
1130         u64 mac;
1131         int err = 0;
1132         struct hlist_head *bucket;
1133         unsigned int i;
1134         int removed = 0;
1135         u32 prev_flags;
1136
1137         /* Note that we do not need to protect our mac_hash traversal with rcu,
1138          * since all modification code is protected by mdev->state_lock
1139          */
1140
1141         /* find what to remove */
1142         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1143                 bucket = &priv->mac_hash[i];
1144                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1145                         found = false;
1146                         netdev_for_each_uc_addr(ha, dev) {
1147                                 if (ether_addr_equal_64bits(entry->mac,
1148                                                             ha->addr)) {
1149                                         found = true;
1150                                         break;
1151                                 }
1152                         }
1153
1154                         /* MAC address of the port is not in uc list */
1155                         if (ether_addr_equal_64bits(entry->mac,
1156                                                     priv->current_mac))
1157                                 found = true;
1158
1159                         if (!found) {
1160                                 mac = mlx4_mac_to_u64(entry->mac);
1161                                 mlx4_en_uc_steer_release(priv, entry->mac,
1162                                                          priv->base_qpn,
1163                                                          entry->reg_id);
1164                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1165
1166                                 hlist_del_rcu(&entry->hlist);
1167                                 kfree_rcu(entry, rcu);
1168                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1169                                        entry->mac, priv->port);
1170                                 ++removed;
1171                         }
1172                 }
1173         }
1174
1175         /* if we didn't remove anything, there is no use in trying to add
1176          * again once we are in a forced promisc mode state
1177          */
1178         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1179                 return;
1180
1181         prev_flags = priv->flags;
1182         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1183
1184         /* find what to add */
1185         netdev_for_each_uc_addr(ha, dev) {
1186                 found = false;
1187                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1188                 hlist_for_each_entry(entry, bucket, hlist) {
1189                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1190                                 found = true;
1191                                 break;
1192                         }
1193                 }
1194
1195                 if (!found) {
1196                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1197                         if (!entry) {
1198                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1199                                        ha->addr, priv->port);
1200                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1201                                 break;
1202                         }
1203                         mac = mlx4_mac_to_u64(ha->addr);
1204                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1205                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1206                         if (err < 0) {
1207                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1208                                        ha->addr, priv->port, err);
1209                                 kfree(entry);
1210                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1211                                 break;
1212                         }
1213                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1214                                                    &priv->base_qpn,
1215                                                    &entry->reg_id);
1216                         if (err) {
1217                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1218                                        ha->addr, priv->port, err);
1219                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1220                                 kfree(entry);
1221                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1222                                 break;
1223                         } else {
1224                                 unsigned int mac_hash;
1225                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1226                                        ha->addr, priv->port);
1227                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1228                                 bucket = &priv->mac_hash[mac_hash];
1229                                 hlist_add_head_rcu(&entry->hlist, bucket);
1230                         }
1231                 }
1232         }
1233
1234         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1235                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1236                         priv->port);
1237         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1238                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1239                         priv->port);
1240         }
1241 }
1242
1243 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1244 {
1245         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1246                                                  rx_mode_task);
1247         struct mlx4_en_dev *mdev = priv->mdev;
1248         struct net_device *dev = priv->dev;
1249
1250         mutex_lock(&mdev->state_lock);
1251         if (!mdev->device_up) {
1252                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1253                 goto out;
1254         }
1255         if (!priv->port_up) {
1256                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1257                 goto out;
1258         }
1259
1260         if (!netif_carrier_ok(dev)) {
1261                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1262                         if (priv->port_state.link_state) {
1263                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1264                                 netif_carrier_on(dev);
1265                                 en_dbg(LINK, priv, "Link Up\n");
1266                         }
1267                 }
1268         }
1269
1270         if (dev->priv_flags & IFF_UNICAST_FLT)
1271                 mlx4_en_do_uc_filter(priv, dev, mdev);
1272
1273         /* Promsicuous mode: disable all filters */
1274         if ((dev->flags & IFF_PROMISC) ||
1275             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1276                 mlx4_en_set_promisc_mode(priv, mdev);
1277                 goto out;
1278         }
1279
1280         /* Not in promiscuous mode */
1281         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1282                 mlx4_en_clear_promisc_mode(priv, mdev);
1283
1284         mlx4_en_do_multicast(priv, dev, mdev);
1285 out:
1286         mutex_unlock(&mdev->state_lock);
1287 }
1288
1289 #ifdef CONFIG_NET_POLL_CONTROLLER
1290 static void mlx4_en_netpoll(struct net_device *dev)
1291 {
1292         struct mlx4_en_priv *priv = netdev_priv(dev);
1293         struct mlx4_en_cq *cq;
1294         int i;
1295
1296         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1297                 cq = priv->tx_cq[TX][i];
1298                 napi_schedule(&cq->napi);
1299         }
1300 }
1301 #endif
1302
1303 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1304 {
1305         u64 reg_id;
1306         int err = 0;
1307         int *qpn = &priv->base_qpn;
1308         struct mlx4_mac_entry *entry;
1309
1310         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1311         if (err)
1312                 return err;
1313
1314         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1315                                        &priv->tunnel_reg_id);
1316         if (err)
1317                 goto tunnel_err;
1318
1319         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1320         if (!entry) {
1321                 err = -ENOMEM;
1322                 goto alloc_err;
1323         }
1324
1325         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1326         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1327         entry->reg_id = reg_id;
1328         hlist_add_head_rcu(&entry->hlist,
1329                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1330
1331         return 0;
1332
1333 alloc_err:
1334         if (priv->tunnel_reg_id)
1335                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1336
1337 tunnel_err:
1338         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1339         return err;
1340 }
1341
1342 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1343 {
1344         u64 mac;
1345         unsigned int i;
1346         int qpn = priv->base_qpn;
1347         struct hlist_head *bucket;
1348         struct hlist_node *tmp;
1349         struct mlx4_mac_entry *entry;
1350
1351         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1352                 bucket = &priv->mac_hash[i];
1353                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1354                         mac = mlx4_mac_to_u64(entry->mac);
1355                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1356                                entry->mac);
1357                         mlx4_en_uc_steer_release(priv, entry->mac,
1358                                                  qpn, entry->reg_id);
1359
1360                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1361                         hlist_del_rcu(&entry->hlist);
1362                         kfree_rcu(entry, rcu);
1363                 }
1364         }
1365
1366         if (priv->tunnel_reg_id) {
1367                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1368                 priv->tunnel_reg_id = 0;
1369         }
1370 }
1371
1372 static void mlx4_en_tx_timeout(struct net_device *dev)
1373 {
1374         struct mlx4_en_priv *priv = netdev_priv(dev);
1375         struct mlx4_en_dev *mdev = priv->mdev;
1376         int i;
1377
1378         if (netif_msg_timer(priv))
1379                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1380
1381         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1382                 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i];
1383
1384                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1385                         continue;
1386                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1387                         i, tx_ring->qpn, tx_ring->sp_cqn,
1388                         tx_ring->cons, tx_ring->prod);
1389         }
1390
1391         priv->port_stats.tx_timeout++;
1392         en_dbg(DRV, priv, "Scheduling watchdog\n");
1393         queue_work(mdev->workqueue, &priv->watchdog_task);
1394 }
1395
1396
1397 static void
1398 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1399 {
1400         struct mlx4_en_priv *priv = netdev_priv(dev);
1401
1402         spin_lock_bh(&priv->stats_lock);
1403         mlx4_en_fold_software_stats(dev);
1404         netdev_stats_to_stats64(stats, &dev->stats);
1405         spin_unlock_bh(&priv->stats_lock);
1406 }
1407
1408 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1409 {
1410         struct mlx4_en_cq *cq;
1411         int i, t;
1412
1413         /* If we haven't received a specific coalescing setting
1414          * (module param), we set the moderation parameters as follows:
1415          * - moder_cnt is set to the number of mtu sized packets to
1416          *   satisfy our coalescing target.
1417          * - moder_time is set to a fixed value.
1418          */
1419         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1420         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1421         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1422         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1423         en_dbg(INTR, priv, "Default coalescing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1424                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1425
1426         /* Setup cq moderation params */
1427         for (i = 0; i < priv->rx_ring_num; i++) {
1428                 cq = priv->rx_cq[i];
1429                 cq->moder_cnt = priv->rx_frames;
1430                 cq->moder_time = priv->rx_usecs;
1431                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1432                 priv->last_moder_packets[i] = 0;
1433                 priv->last_moder_bytes[i] = 0;
1434         }
1435
1436         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1437                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1438                         cq = priv->tx_cq[t][i];
1439                         cq->moder_cnt = priv->tx_frames;
1440                         cq->moder_time = priv->tx_usecs;
1441                 }
1442         }
1443
1444         /* Reset auto-moderation params */
1445         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1446         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1447         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1448         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1449         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1450         priv->adaptive_rx_coal = 1;
1451         priv->last_moder_jiffies = 0;
1452         priv->last_moder_tx_packets = 0;
1453 }
1454
1455 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1456 {
1457         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1458         u32 pkt_rate_high, pkt_rate_low;
1459         struct mlx4_en_cq *cq;
1460         unsigned long packets;
1461         unsigned long rate;
1462         unsigned long avg_pkt_size;
1463         unsigned long rx_packets;
1464         unsigned long rx_bytes;
1465         unsigned long rx_pkt_diff;
1466         int moder_time;
1467         int ring, err;
1468
1469         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1470                 return;
1471
1472         pkt_rate_low = READ_ONCE(priv->pkt_rate_low);
1473         pkt_rate_high = READ_ONCE(priv->pkt_rate_high);
1474
1475         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1476                 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1477                 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1478
1479                 rx_pkt_diff = rx_packets - priv->last_moder_packets[ring];
1480                 packets = rx_pkt_diff;
1481                 rate = packets * HZ / period;
1482                 avg_pkt_size = packets ? (rx_bytes -
1483                                 priv->last_moder_bytes[ring]) / packets : 0;
1484
1485                 /* Apply auto-moderation only when packet rate
1486                  * exceeds a rate that it matters */
1487                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1488                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1489                         if (rate <= pkt_rate_low)
1490                                 moder_time = priv->rx_usecs_low;
1491                         else if (rate >= pkt_rate_high)
1492                                 moder_time = priv->rx_usecs_high;
1493                         else
1494                                 moder_time = (rate - pkt_rate_low) *
1495                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1496                                         (pkt_rate_high - pkt_rate_low) +
1497                                         priv->rx_usecs_low;
1498                 } else {
1499                         moder_time = priv->rx_usecs_low;
1500                 }
1501
1502                 cq = priv->rx_cq[ring];
1503                 if (moder_time != priv->last_moder_time[ring] ||
1504                     cq->moder_cnt != priv->rx_frames) {
1505                         priv->last_moder_time[ring] = moder_time;
1506                         cq->moder_time = moder_time;
1507                         cq->moder_cnt = priv->rx_frames;
1508                         err = mlx4_en_set_cq_moder(priv, cq);
1509                         if (err)
1510                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1511                                        ring);
1512                 }
1513                 priv->last_moder_packets[ring] = rx_packets;
1514                 priv->last_moder_bytes[ring] = rx_bytes;
1515         }
1516
1517         priv->last_moder_jiffies = jiffies;
1518 }
1519
1520 static void mlx4_en_do_get_stats(struct work_struct *work)
1521 {
1522         struct delayed_work *delay = to_delayed_work(work);
1523         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1524                                                  stats_task);
1525         struct mlx4_en_dev *mdev = priv->mdev;
1526         int err;
1527
1528         mutex_lock(&mdev->state_lock);
1529         if (mdev->device_up) {
1530                 if (priv->port_up) {
1531                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1532                         if (err)
1533                                 en_dbg(HW, priv, "Could not update stats\n");
1534
1535                         mlx4_en_auto_moderation(priv);
1536                 }
1537
1538                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1539         }
1540         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1541                 mlx4_en_do_set_mac(priv, priv->current_mac);
1542                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1543         }
1544         mutex_unlock(&mdev->state_lock);
1545 }
1546
1547 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1548  * periodically
1549  */
1550 static void mlx4_en_service_task(struct work_struct *work)
1551 {
1552         struct delayed_work *delay = to_delayed_work(work);
1553         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1554                                                  service_task);
1555         struct mlx4_en_dev *mdev = priv->mdev;
1556
1557         mutex_lock(&mdev->state_lock);
1558         if (mdev->device_up) {
1559                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1560                         mlx4_en_ptp_overflow_check(mdev);
1561
1562                 mlx4_en_recover_from_oom(priv);
1563                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1564                                    SERVICE_TASK_DELAY);
1565         }
1566         mutex_unlock(&mdev->state_lock);
1567 }
1568
1569 static void mlx4_en_linkstate(struct work_struct *work)
1570 {
1571         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1572                                                  linkstate_task);
1573         struct mlx4_en_dev *mdev = priv->mdev;
1574         int linkstate = priv->link_state;
1575
1576         mutex_lock(&mdev->state_lock);
1577         /* If observable port state changed set carrier state and
1578          * report to system log */
1579         if (priv->last_link_state != linkstate) {
1580                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1581                         en_info(priv, "Link Down\n");
1582                         netif_carrier_off(priv->dev);
1583                 } else {
1584                         en_info(priv, "Link Up\n");
1585                         netif_carrier_on(priv->dev);
1586                 }
1587         }
1588         priv->last_link_state = linkstate;
1589         mutex_unlock(&mdev->state_lock);
1590 }
1591
1592 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1593 {
1594         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1595         int numa_node = priv->mdev->dev->numa_node;
1596
1597         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1598                 return -ENOMEM;
1599
1600         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1601                         ring->affinity_mask);
1602         return 0;
1603 }
1604
1605 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1606 {
1607         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1608 }
1609
1610 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1611                                       int tx_ring_idx)
1612 {
1613         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1614         int rr_index = tx_ring_idx;
1615
1616         tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1617         tx_ring->recycle_ring = priv->rx_ring[rr_index];
1618         en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1619                TX_XDP, tx_ring_idx, rr_index);
1620 }
1621
1622 int mlx4_en_start_port(struct net_device *dev)
1623 {
1624         struct mlx4_en_priv *priv = netdev_priv(dev);
1625         struct mlx4_en_dev *mdev = priv->mdev;
1626         struct mlx4_en_cq *cq;
1627         struct mlx4_en_tx_ring *tx_ring;
1628         int rx_index = 0;
1629         int err = 0;
1630         int i, t;
1631         int j;
1632         u8 mc_list[16] = {0};
1633
1634         if (priv->port_up) {
1635                 en_dbg(DRV, priv, "start port called while port already up\n");
1636                 return 0;
1637         }
1638
1639         INIT_LIST_HEAD(&priv->mc_list);
1640         INIT_LIST_HEAD(&priv->curr_list);
1641         INIT_LIST_HEAD(&priv->ethtool_list);
1642         memset(&priv->ethtool_rules[0], 0,
1643                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1644
1645         /* Calculate Rx buf size */
1646         dev->mtu = min(dev->mtu, priv->max_mtu);
1647         mlx4_en_calc_rx_buf(dev);
1648         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1649
1650         /* Configure rx cq's and rings */
1651         err = mlx4_en_activate_rx_rings(priv);
1652         if (err) {
1653                 en_err(priv, "Failed to activate RX rings\n");
1654                 return err;
1655         }
1656         for (i = 0; i < priv->rx_ring_num; i++) {
1657                 cq = priv->rx_cq[i];
1658
1659                 err = mlx4_en_init_affinity_hint(priv, i);
1660                 if (err) {
1661                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1662                         goto cq_err;
1663                 }
1664
1665                 err = mlx4_en_activate_cq(priv, cq, i);
1666                 if (err) {
1667                         en_err(priv, "Failed activating Rx CQ\n");
1668                         mlx4_en_free_affinity_hint(priv, i);
1669                         goto cq_err;
1670                 }
1671
1672                 for (j = 0; j < cq->size; j++) {
1673                         struct mlx4_cqe *cqe = NULL;
1674
1675                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1676                               priv->cqe_factor;
1677                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1678                 }
1679
1680                 err = mlx4_en_set_cq_moder(priv, cq);
1681                 if (err) {
1682                         en_err(priv, "Failed setting cq moderation parameters\n");
1683                         mlx4_en_deactivate_cq(priv, cq);
1684                         mlx4_en_free_affinity_hint(priv, i);
1685                         goto cq_err;
1686                 }
1687                 mlx4_en_arm_cq(priv, cq);
1688                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1689                 ++rx_index;
1690         }
1691
1692         /* Set qp number */
1693         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1694         err = mlx4_en_get_qp(priv);
1695         if (err) {
1696                 en_err(priv, "Failed getting eth qp\n");
1697                 goto cq_err;
1698         }
1699         mdev->mac_removed[priv->port] = 0;
1700
1701         priv->counter_index =
1702                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1703
1704         err = mlx4_en_config_rss_steer(priv);
1705         if (err) {
1706                 en_err(priv, "Failed configuring rss steering\n");
1707                 goto mac_err;
1708         }
1709
1710         err = mlx4_en_create_drop_qp(priv);
1711         if (err)
1712                 goto rss_err;
1713
1714         /* Configure tx cq's and rings */
1715         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1716                 u8 num_tx_rings_p_up = t == TX ?
1717                         priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1718
1719                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1720                         /* Configure cq */
1721                         cq = priv->tx_cq[t][i];
1722                         err = mlx4_en_activate_cq(priv, cq, i);
1723                         if (err) {
1724                                 en_err(priv, "Failed allocating Tx CQ\n");
1725                                 goto tx_err;
1726                         }
1727                         err = mlx4_en_set_cq_moder(priv, cq);
1728                         if (err) {
1729                                 en_err(priv, "Failed setting cq moderation parameters\n");
1730                                 mlx4_en_deactivate_cq(priv, cq);
1731                                 goto tx_err;
1732                         }
1733                         en_dbg(DRV, priv,
1734                                "Resetting index of collapsed CQ:%d to -1\n", i);
1735                         cq->buf->wqe_index = cpu_to_be16(0xffff);
1736
1737                         /* Configure ring */
1738                         tx_ring = priv->tx_ring[t][i];
1739                         err = mlx4_en_activate_tx_ring(priv, tx_ring,
1740                                                        cq->mcq.cqn,
1741                                                        i / num_tx_rings_p_up);
1742                         if (err) {
1743                                 en_err(priv, "Failed allocating Tx ring\n");
1744                                 mlx4_en_deactivate_cq(priv, cq);
1745                                 goto tx_err;
1746                         }
1747                         if (t != TX_XDP) {
1748                                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1749                                 tx_ring->recycle_ring = NULL;
1750
1751                                 /* Arm CQ for TX completions */
1752                                 mlx4_en_arm_cq(priv, cq);
1753
1754                         } else {
1755                                 mlx4_en_init_tx_xdp_ring_descs(priv, tx_ring);
1756                                 mlx4_en_init_recycle_ring(priv, i);
1757                                 /* XDP TX CQ should never be armed */
1758                         }
1759
1760                         /* Set initial ownership of all Tx TXBBs to SW (1) */
1761                         for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1762                                 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1763                 }
1764         }
1765
1766         /* Configure port */
1767         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1768                                     priv->rx_skb_size + ETH_FCS_LEN,
1769                                     priv->prof->tx_pause,
1770                                     priv->prof->tx_ppp,
1771                                     priv->prof->rx_pause,
1772                                     priv->prof->rx_ppp);
1773         if (err) {
1774                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1775                        priv->port, err);
1776                 goto tx_err;
1777         }
1778
1779         err = mlx4_SET_PORT_user_mtu(mdev->dev, priv->port, dev->mtu);
1780         if (err) {
1781                 en_err(priv, "Failed to pass user MTU(%d) to Firmware for port %d, with error %d\n",
1782                        dev->mtu, priv->port, err);
1783                 goto tx_err;
1784         }
1785
1786         /* Set default qp number */
1787         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1788         if (err) {
1789                 en_err(priv, "Failed setting default qp numbers\n");
1790                 goto tx_err;
1791         }
1792
1793         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1794                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1795                 if (err) {
1796                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1797                                err);
1798                         goto tx_err;
1799                 }
1800         }
1801
1802         /* Init port */
1803         en_dbg(HW, priv, "Initializing port\n");
1804         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1805         if (err) {
1806                 en_err(priv, "Failed Initializing port\n");
1807                 goto tx_err;
1808         }
1809
1810         /* Set Unicast and VXLAN steering rules */
1811         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1812             mlx4_en_set_rss_steer_rules(priv))
1813                 mlx4_warn(mdev, "Failed setting steering rules\n");
1814
1815         /* Attach rx QP to bradcast address */
1816         eth_broadcast_addr(&mc_list[10]);
1817         mc_list[5] = priv->port; /* needed for B0 steering support */
1818         if (mlx4_multicast_attach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1819                                   priv->port, 0, MLX4_PROT_ETH,
1820                                   &priv->broadcast_id))
1821                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1822
1823         /* Must redo promiscuous mode setup. */
1824         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1825
1826         /* Schedule multicast task to populate multicast list */
1827         queue_work(mdev->workqueue, &priv->rx_mode_task);
1828
1829         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1830                 udp_tunnel_get_rx_info(dev);
1831
1832         priv->port_up = true;
1833
1834         /* Process all completions if exist to prevent
1835          * the queues freezing if they are full
1836          */
1837         for (i = 0; i < priv->rx_ring_num; i++) {
1838                 local_bh_disable();
1839                 napi_schedule(&priv->rx_cq[i]->napi);
1840                 local_bh_enable();
1841         }
1842
1843         netif_tx_start_all_queues(dev);
1844         netif_device_attach(dev);
1845
1846         return 0;
1847
1848 tx_err:
1849         if (t == MLX4_EN_NUM_TX_TYPES) {
1850                 t--;
1851                 i = priv->tx_ring_num[t];
1852         }
1853         while (t >= 0) {
1854                 while (i--) {
1855                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1856                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1857                 }
1858                 if (!t--)
1859                         break;
1860                 i = priv->tx_ring_num[t];
1861         }
1862         mlx4_en_destroy_drop_qp(priv);
1863 rss_err:
1864         mlx4_en_release_rss_steer(priv);
1865 mac_err:
1866         mlx4_en_put_qp(priv);
1867 cq_err:
1868         while (rx_index--) {
1869                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1870                 mlx4_en_free_affinity_hint(priv, rx_index);
1871         }
1872         for (i = 0; i < priv->rx_ring_num; i++)
1873                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1874
1875         return err; /* need to close devices */
1876 }
1877
1878
1879 void mlx4_en_stop_port(struct net_device *dev, int detach)
1880 {
1881         struct mlx4_en_priv *priv = netdev_priv(dev);
1882         struct mlx4_en_dev *mdev = priv->mdev;
1883         struct mlx4_en_mc_list *mclist, *tmp;
1884         struct ethtool_flow_id *flow, *tmp_flow;
1885         int i, t;
1886         u8 mc_list[16] = {0};
1887
1888         if (!priv->port_up) {
1889                 en_dbg(DRV, priv, "stop port called while port already down\n");
1890                 return;
1891         }
1892
1893         /* close port*/
1894         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1895
1896         /* Synchronize with tx routine */
1897         netif_tx_lock_bh(dev);
1898         if (detach)
1899                 netif_device_detach(dev);
1900         netif_tx_stop_all_queues(dev);
1901         netif_tx_unlock_bh(dev);
1902
1903         netif_tx_disable(dev);
1904
1905         spin_lock_bh(&priv->stats_lock);
1906         mlx4_en_fold_software_stats(dev);
1907         /* Set port as not active */
1908         priv->port_up = false;
1909         spin_unlock_bh(&priv->stats_lock);
1910
1911         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1912
1913         /* Promsicuous mode */
1914         if (mdev->dev->caps.steering_mode ==
1915             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1916                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1917                                  MLX4_EN_FLAG_MC_PROMISC);
1918                 mlx4_flow_steer_promisc_remove(mdev->dev,
1919                                                priv->port,
1920                                                MLX4_FS_ALL_DEFAULT);
1921                 mlx4_flow_steer_promisc_remove(mdev->dev,
1922                                                priv->port,
1923                                                MLX4_FS_MC_DEFAULT);
1924         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1925                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1926
1927                 /* Disable promiscouos mode */
1928                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1929                                             priv->port);
1930
1931                 /* Disable Multicast promisc */
1932                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1933                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1934                                                       priv->port);
1935                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1936                 }
1937         }
1938
1939         /* Detach All multicasts */
1940         eth_broadcast_addr(&mc_list[10]);
1941         mc_list[5] = priv->port; /* needed for B0 steering support */
1942         mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp, mc_list,
1943                               MLX4_PROT_ETH, priv->broadcast_id);
1944         list_for_each_entry(mclist, &priv->curr_list, list) {
1945                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1946                 mc_list[5] = priv->port;
1947                 mlx4_multicast_detach(mdev->dev, priv->rss_map.indir_qp,
1948                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1949                 if (mclist->tunnel_reg_id)
1950                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1951         }
1952         mlx4_en_clear_list(dev);
1953         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1954                 list_del(&mclist->list);
1955                 kfree(mclist);
1956         }
1957
1958         /* Flush multicast filter */
1959         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1960
1961         /* Remove flow steering rules for the port*/
1962         if (mdev->dev->caps.steering_mode ==
1963             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1964                 ASSERT_RTNL();
1965                 list_for_each_entry_safe(flow, tmp_flow,
1966                                          &priv->ethtool_list, list) {
1967                         mlx4_flow_detach(mdev->dev, flow->id);
1968                         list_del(&flow->list);
1969                 }
1970         }
1971
1972         mlx4_en_destroy_drop_qp(priv);
1973
1974         /* Free TX Rings */
1975         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1976                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1977                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1978                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1979                 }
1980         }
1981         msleep(10);
1982
1983         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1984                 for (i = 0; i < priv->tx_ring_num[t]; i++)
1985                         mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1986
1987         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1988                 mlx4_en_delete_rss_steer_rules(priv);
1989
1990         /* Free RSS qps */
1991         mlx4_en_release_rss_steer(priv);
1992
1993         /* Unregister Mac address for the port */
1994         mlx4_en_put_qp(priv);
1995         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1996                 mdev->mac_removed[priv->port] = 1;
1997
1998         /* Free RX Rings */
1999         for (i = 0; i < priv->rx_ring_num; i++) {
2000                 struct mlx4_en_cq *cq = priv->rx_cq[i];
2001
2002                 napi_synchronize(&cq->napi);
2003                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
2004                 mlx4_en_deactivate_cq(priv, cq);
2005
2006                 mlx4_en_free_affinity_hint(priv, i);
2007         }
2008 }
2009
2010 static void mlx4_en_restart(struct work_struct *work)
2011 {
2012         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2013                                                  watchdog_task);
2014         struct mlx4_en_dev *mdev = priv->mdev;
2015         struct net_device *dev = priv->dev;
2016
2017         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
2018
2019         rtnl_lock();
2020         mutex_lock(&mdev->state_lock);
2021         if (priv->port_up) {
2022                 mlx4_en_stop_port(dev, 1);
2023                 if (mlx4_en_start_port(dev))
2024                         en_err(priv, "Failed restarting port %d\n", priv->port);
2025         }
2026         mutex_unlock(&mdev->state_lock);
2027         rtnl_unlock();
2028 }
2029
2030 static void mlx4_en_clear_stats(struct net_device *dev)
2031 {
2032         struct mlx4_en_priv *priv = netdev_priv(dev);
2033         struct mlx4_en_dev *mdev = priv->mdev;
2034         struct mlx4_en_tx_ring **tx_ring;
2035         int i;
2036
2037         if (!mlx4_is_slave(mdev->dev))
2038                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
2039                         en_dbg(HW, priv, "Failed dumping statistics\n");
2040
2041         memset(&priv->pstats, 0, sizeof(priv->pstats));
2042         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
2043         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
2044         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
2045         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
2046         memset(&priv->rx_priority_flowstats, 0,
2047                sizeof(priv->rx_priority_flowstats));
2048         memset(&priv->tx_priority_flowstats, 0,
2049                sizeof(priv->tx_priority_flowstats));
2050         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
2051
2052         tx_ring = priv->tx_ring[TX];
2053         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
2054                 tx_ring[i]->bytes = 0;
2055                 tx_ring[i]->packets = 0;
2056                 tx_ring[i]->tx_csum = 0;
2057                 tx_ring[i]->tx_dropped = 0;
2058                 tx_ring[i]->queue_stopped = 0;
2059                 tx_ring[i]->wake_queue = 0;
2060                 tx_ring[i]->tso_packets = 0;
2061                 tx_ring[i]->xmit_more = 0;
2062         }
2063         for (i = 0; i < priv->rx_ring_num; i++) {
2064                 priv->rx_ring[i]->bytes = 0;
2065                 priv->rx_ring[i]->packets = 0;
2066                 priv->rx_ring[i]->csum_ok = 0;
2067                 priv->rx_ring[i]->csum_none = 0;
2068                 priv->rx_ring[i]->csum_complete = 0;
2069         }
2070 }
2071
2072 static int mlx4_en_open(struct net_device *dev)
2073 {
2074         struct mlx4_en_priv *priv = netdev_priv(dev);
2075         struct mlx4_en_dev *mdev = priv->mdev;
2076         int err = 0;
2077
2078         mutex_lock(&mdev->state_lock);
2079
2080         if (!mdev->device_up) {
2081                 en_err(priv, "Cannot open - device down/disabled\n");
2082                 err = -EBUSY;
2083                 goto out;
2084         }
2085
2086         /* Reset HW statistics and SW counters */
2087         mlx4_en_clear_stats(dev);
2088
2089         err = mlx4_en_start_port(dev);
2090         if (err)
2091                 en_err(priv, "Failed starting port:%d\n", priv->port);
2092
2093 out:
2094         mutex_unlock(&mdev->state_lock);
2095         return err;
2096 }
2097
2098
2099 static int mlx4_en_close(struct net_device *dev)
2100 {
2101         struct mlx4_en_priv *priv = netdev_priv(dev);
2102         struct mlx4_en_dev *mdev = priv->mdev;
2103
2104         en_dbg(IFDOWN, priv, "Close port called\n");
2105
2106         mutex_lock(&mdev->state_lock);
2107
2108         mlx4_en_stop_port(dev, 0);
2109         netif_carrier_off(dev);
2110
2111         mutex_unlock(&mdev->state_lock);
2112         return 0;
2113 }
2114
2115 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2116 {
2117         int i, t;
2118
2119 #ifdef CONFIG_RFS_ACCEL
2120         priv->dev->rx_cpu_rmap = NULL;
2121 #endif
2122
2123         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2124                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2125                         if (priv->tx_ring[t] && priv->tx_ring[t][i])
2126                                 mlx4_en_destroy_tx_ring(priv,
2127                                                         &priv->tx_ring[t][i]);
2128                         if (priv->tx_cq[t] && priv->tx_cq[t][i])
2129                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2130                 }
2131                 kfree(priv->tx_ring[t]);
2132                 kfree(priv->tx_cq[t]);
2133         }
2134
2135         for (i = 0; i < priv->rx_ring_num; i++) {
2136                 if (priv->rx_ring[i])
2137                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2138                                 priv->prof->rx_ring_size, priv->stride);
2139                 if (priv->rx_cq[i])
2140                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2141         }
2142
2143 }
2144
2145 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2146 {
2147         struct mlx4_en_port_profile *prof = priv->prof;
2148         int i, t;
2149         int node;
2150
2151         /* Create tx Rings */
2152         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2153                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2154                         node = cpu_to_node(i % num_online_cpus());
2155                         if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2156                                               prof->tx_ring_size, i, t, node))
2157                                 goto err;
2158
2159                         if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2160                                                    prof->tx_ring_size,
2161                                                    TXBB_SIZE, node, i))
2162                                 goto err;
2163                 }
2164         }
2165
2166         /* Create rx Rings */
2167         for (i = 0; i < priv->rx_ring_num; i++) {
2168                 node = cpu_to_node(i % num_online_cpus());
2169                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2170                                       prof->rx_ring_size, i, RX, node))
2171                         goto err;
2172
2173                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2174                                            prof->rx_ring_size, priv->stride,
2175                                            node, i))
2176                         goto err;
2177
2178         }
2179
2180 #ifdef CONFIG_RFS_ACCEL
2181         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2182 #endif
2183
2184         return 0;
2185
2186 err:
2187         en_err(priv, "Failed to allocate NIC resources\n");
2188         for (i = 0; i < priv->rx_ring_num; i++) {
2189                 if (priv->rx_ring[i])
2190                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2191                                                 prof->rx_ring_size,
2192                                                 priv->stride);
2193                 if (priv->rx_cq[i])
2194                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2195         }
2196         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2197                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2198                         if (priv->tx_ring[t][i])
2199                                 mlx4_en_destroy_tx_ring(priv,
2200                                                         &priv->tx_ring[t][i]);
2201                         if (priv->tx_cq[t][i])
2202                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2203                 }
2204         }
2205         return -ENOMEM;
2206 }
2207
2208
2209 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2210                              struct mlx4_en_priv *src,
2211                              struct mlx4_en_port_profile *prof)
2212 {
2213         int t;
2214
2215         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2216                sizeof(dst->hwtstamp_config));
2217         dst->num_tx_rings_p_up = prof->num_tx_rings_p_up;
2218         dst->rx_ring_num = prof->rx_ring_num;
2219         dst->flags = prof->flags;
2220         dst->mdev = src->mdev;
2221         dst->port = src->port;
2222         dst->dev = src->dev;
2223         dst->prof = prof;
2224         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2225                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2226
2227         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2228                 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2229                 if (!dst->tx_ring_num[t])
2230                         continue;
2231
2232                 dst->tx_ring[t] = kcalloc(MAX_TX_RINGS,
2233                                           sizeof(struct mlx4_en_tx_ring *),
2234                                           GFP_KERNEL);
2235                 if (!dst->tx_ring[t])
2236                         goto err_free_tx;
2237
2238                 dst->tx_cq[t] = kcalloc(MAX_TX_RINGS,
2239                                         sizeof(struct mlx4_en_cq *),
2240                                         GFP_KERNEL);
2241                 if (!dst->tx_cq[t]) {
2242                         kfree(dst->tx_ring[t]);
2243                         goto err_free_tx;
2244                 }
2245         }
2246
2247         return 0;
2248
2249 err_free_tx:
2250         while (t--) {
2251                 kfree(dst->tx_ring[t]);
2252                 kfree(dst->tx_cq[t]);
2253         }
2254         return -ENOMEM;
2255 }
2256
2257 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2258                                 struct mlx4_en_priv *src)
2259 {
2260         int t;
2261         memcpy(dst->rx_ring, src->rx_ring,
2262                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2263         memcpy(dst->rx_cq, src->rx_cq,
2264                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2265         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2266                sizeof(dst->hwtstamp_config));
2267         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2268                 dst->tx_ring_num[t] = src->tx_ring_num[t];
2269                 dst->tx_ring[t] = src->tx_ring[t];
2270                 dst->tx_cq[t] = src->tx_cq[t];
2271         }
2272         dst->num_tx_rings_p_up = src->num_tx_rings_p_up;
2273         dst->rx_ring_num = src->rx_ring_num;
2274         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2275 }
2276
2277 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2278                                 struct mlx4_en_priv *tmp,
2279                                 struct mlx4_en_port_profile *prof,
2280                                 bool carry_xdp_prog)
2281 {
2282         struct bpf_prog *xdp_prog;
2283         int i, t;
2284
2285         mlx4_en_copy_priv(tmp, priv, prof);
2286
2287         if (mlx4_en_alloc_resources(tmp)) {
2288                 en_warn(priv,
2289                         "%s: Resource allocation failed, using previous configuration\n",
2290                         __func__);
2291                 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2292                         kfree(tmp->tx_ring[t]);
2293                         kfree(tmp->tx_cq[t]);
2294                 }
2295                 return -ENOMEM;
2296         }
2297
2298         /* All rx_rings has the same xdp_prog.  Pick the first one. */
2299         xdp_prog = rcu_dereference_protected(
2300                 priv->rx_ring[0]->xdp_prog,
2301                 lockdep_is_held(&priv->mdev->state_lock));
2302
2303         if (xdp_prog && carry_xdp_prog) {
2304                 xdp_prog = bpf_prog_add(xdp_prog, tmp->rx_ring_num);
2305                 if (IS_ERR(xdp_prog)) {
2306                         mlx4_en_free_resources(tmp);
2307                         return PTR_ERR(xdp_prog);
2308                 }
2309                 for (i = 0; i < tmp->rx_ring_num; i++)
2310                         rcu_assign_pointer(tmp->rx_ring[i]->xdp_prog,
2311                                            xdp_prog);
2312         }
2313
2314         return 0;
2315 }
2316
2317 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2318                                     struct mlx4_en_priv *tmp)
2319 {
2320         mlx4_en_free_resources(priv);
2321         mlx4_en_update_priv(priv, tmp);
2322 }
2323
2324 void mlx4_en_destroy_netdev(struct net_device *dev)
2325 {
2326         struct mlx4_en_priv *priv = netdev_priv(dev);
2327         struct mlx4_en_dev *mdev = priv->mdev;
2328
2329         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2330
2331         /* Unregister device - this will close the port if it was up */
2332         if (priv->registered) {
2333                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2334                                                               priv->port));
2335                 unregister_netdev(dev);
2336         }
2337
2338         if (priv->allocated)
2339                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2340
2341         cancel_delayed_work(&priv->stats_task);
2342         cancel_delayed_work(&priv->service_task);
2343         /* flush any pending task for this netdev */
2344         flush_workqueue(mdev->workqueue);
2345
2346         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2347                 mlx4_en_remove_timestamp(mdev);
2348
2349         /* Detach the netdev so tasks would not attempt to access it */
2350         mutex_lock(&mdev->state_lock);
2351         mdev->pndev[priv->port] = NULL;
2352         mdev->upper[priv->port] = NULL;
2353
2354 #ifdef CONFIG_RFS_ACCEL
2355         mlx4_en_cleanup_filters(priv);
2356 #endif
2357
2358         mlx4_en_free_resources(priv);
2359         mutex_unlock(&mdev->state_lock);
2360
2361         free_netdev(dev);
2362 }
2363
2364 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2365 {
2366         struct mlx4_en_priv *priv = netdev_priv(dev);
2367
2368         if (mtu > MLX4_EN_MAX_XDP_MTU) {
2369                 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2370                        mtu, MLX4_EN_MAX_XDP_MTU);
2371                 return false;
2372         }
2373
2374         return true;
2375 }
2376
2377 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2378 {
2379         struct mlx4_en_priv *priv = netdev_priv(dev);
2380         struct mlx4_en_dev *mdev = priv->mdev;
2381         int err = 0;
2382
2383         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2384                  dev->mtu, new_mtu);
2385
2386         if (priv->tx_ring_num[TX_XDP] &&
2387             !mlx4_en_check_xdp_mtu(dev, new_mtu))
2388                 return -EOPNOTSUPP;
2389
2390         dev->mtu = new_mtu;
2391
2392         if (netif_running(dev)) {
2393                 mutex_lock(&mdev->state_lock);
2394                 if (!mdev->device_up) {
2395                         /* NIC is probably restarting - let watchdog task reset
2396                          * the port */
2397                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2398                 } else {
2399                         mlx4_en_stop_port(dev, 1);
2400                         err = mlx4_en_start_port(dev);
2401                         if (err) {
2402                                 en_err(priv, "Failed restarting port:%d\n",
2403                                          priv->port);
2404                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2405                         }
2406                 }
2407                 mutex_unlock(&mdev->state_lock);
2408         }
2409         return 0;
2410 }
2411
2412 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2413 {
2414         struct mlx4_en_priv *priv = netdev_priv(dev);
2415         struct mlx4_en_dev *mdev = priv->mdev;
2416         struct hwtstamp_config config;
2417
2418         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2419                 return -EFAULT;
2420
2421         /* reserved for future extensions */
2422         if (config.flags)
2423                 return -EINVAL;
2424
2425         /* device doesn't support time stamping */
2426         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2427                 return -EINVAL;
2428
2429         /* TX HW timestamp */
2430         switch (config.tx_type) {
2431         case HWTSTAMP_TX_OFF:
2432         case HWTSTAMP_TX_ON:
2433                 break;
2434         default:
2435                 return -ERANGE;
2436         }
2437
2438         /* RX HW timestamp */
2439         switch (config.rx_filter) {
2440         case HWTSTAMP_FILTER_NONE:
2441                 break;
2442         case HWTSTAMP_FILTER_ALL:
2443         case HWTSTAMP_FILTER_SOME:
2444         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2445         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2446         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2447         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2448         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2449         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2450         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2451         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2452         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2453         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2454         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2455         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2456         case HWTSTAMP_FILTER_NTP_ALL:
2457                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2458                 break;
2459         default:
2460                 return -ERANGE;
2461         }
2462
2463         if (mlx4_en_reset_config(dev, config, dev->features)) {
2464                 config.tx_type = HWTSTAMP_TX_OFF;
2465                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2466         }
2467
2468         return copy_to_user(ifr->ifr_data, &config,
2469                             sizeof(config)) ? -EFAULT : 0;
2470 }
2471
2472 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2473 {
2474         struct mlx4_en_priv *priv = netdev_priv(dev);
2475
2476         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2477                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2478 }
2479
2480 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2481 {
2482         switch (cmd) {
2483         case SIOCSHWTSTAMP:
2484                 return mlx4_en_hwtstamp_set(dev, ifr);
2485         case SIOCGHWTSTAMP:
2486                 return mlx4_en_hwtstamp_get(dev, ifr);
2487         default:
2488                 return -EOPNOTSUPP;
2489         }
2490 }
2491
2492 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2493                                               netdev_features_t features)
2494 {
2495         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2496         struct mlx4_en_dev *mdev = en_priv->mdev;
2497
2498         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2499          * enable/disable make sure S-TAG flag is always in same state as
2500          * C-TAG.
2501          */
2502         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2503             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2504                 features |= NETIF_F_HW_VLAN_STAG_RX;
2505         else
2506                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2507
2508         return features;
2509 }
2510
2511 static int mlx4_en_set_features(struct net_device *netdev,
2512                 netdev_features_t features)
2513 {
2514         struct mlx4_en_priv *priv = netdev_priv(netdev);
2515         bool reset = false;
2516         int ret = 0;
2517
2518         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2519                 en_info(priv, "Turn %s RX-FCS\n",
2520                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2521                 reset = true;
2522         }
2523
2524         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2525                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2526
2527                 en_info(priv, "Turn %s RX-ALL\n",
2528                         ignore_fcs_value ? "ON" : "OFF");
2529                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2530                                               priv->port, ignore_fcs_value);
2531                 if (ret)
2532                         return ret;
2533         }
2534
2535         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2536                 en_info(priv, "Turn %s RX vlan strip offload\n",
2537                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2538                 reset = true;
2539         }
2540
2541         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2542                 en_info(priv, "Turn %s TX vlan strip offload\n",
2543                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2544
2545         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2546                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2547                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2548
2549         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2550                 en_info(priv, "Turn %s loopback\n",
2551                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2552                 mlx4_en_update_loopback_state(netdev, features);
2553         }
2554
2555         if (reset) {
2556                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2557                                            features);
2558                 if (ret)
2559                         return ret;
2560         }
2561
2562         return 0;
2563 }
2564
2565 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2566 {
2567         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2568         struct mlx4_en_dev *mdev = en_priv->mdev;
2569
2570         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac);
2571 }
2572
2573 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2574                                __be16 vlan_proto)
2575 {
2576         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2577         struct mlx4_en_dev *mdev = en_priv->mdev;
2578
2579         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2580                                 vlan_proto);
2581 }
2582
2583 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2584                                int max_tx_rate)
2585 {
2586         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2587         struct mlx4_en_dev *mdev = en_priv->mdev;
2588
2589         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2590                                 max_tx_rate);
2591 }
2592
2593 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2594 {
2595         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2596         struct mlx4_en_dev *mdev = en_priv->mdev;
2597
2598         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2599 }
2600
2601 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2602 {
2603         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2604         struct mlx4_en_dev *mdev = en_priv->mdev;
2605
2606         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2607 }
2608
2609 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2610 {
2611         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2612         struct mlx4_en_dev *mdev = en_priv->mdev;
2613
2614         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2615 }
2616
2617 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2618                                 struct ifla_vf_stats *vf_stats)
2619 {
2620         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2621         struct mlx4_en_dev *mdev = en_priv->mdev;
2622
2623         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2624 }
2625
2626 #define PORT_ID_BYTE_LEN 8
2627 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2628                                     struct netdev_phys_item_id *ppid)
2629 {
2630         struct mlx4_en_priv *priv = netdev_priv(dev);
2631         struct mlx4_dev *mdev = priv->mdev->dev;
2632         int i;
2633         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2634
2635         if (!phys_port_id)
2636                 return -EOPNOTSUPP;
2637
2638         ppid->id_len = sizeof(phys_port_id);
2639         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2640                 ppid->id[i] =  phys_port_id & 0xff;
2641                 phys_port_id >>= 8;
2642         }
2643         return 0;
2644 }
2645
2646 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2647 {
2648         int ret;
2649         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2650                                                  vxlan_add_task);
2651
2652         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2653         if (ret)
2654                 goto out;
2655
2656         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2657                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2658 out:
2659         if (ret) {
2660                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2661                 return;
2662         }
2663
2664         /* set offloads */
2665         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2666                                       NETIF_F_RXCSUM |
2667                                       NETIF_F_TSO | NETIF_F_TSO6 |
2668                                       NETIF_F_GSO_UDP_TUNNEL |
2669                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2670                                       NETIF_F_GSO_PARTIAL;
2671 }
2672
2673 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2674 {
2675         int ret;
2676         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2677                                                  vxlan_del_task);
2678         /* unset offloads */
2679         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2680                                         NETIF_F_RXCSUM |
2681                                         NETIF_F_TSO | NETIF_F_TSO6 |
2682                                         NETIF_F_GSO_UDP_TUNNEL |
2683                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2684                                         NETIF_F_GSO_PARTIAL);
2685
2686         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2687                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2688         if (ret)
2689                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2690
2691         priv->vxlan_port = 0;
2692 }
2693
2694 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2695                                    struct udp_tunnel_info *ti)
2696 {
2697         struct mlx4_en_priv *priv = netdev_priv(dev);
2698         __be16 port = ti->port;
2699         __be16 current_port;
2700
2701         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2702                 return;
2703
2704         if (ti->sa_family != AF_INET)
2705                 return;
2706
2707         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2708                 return;
2709
2710         current_port = priv->vxlan_port;
2711         if (current_port && current_port != port) {
2712                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2713                         ntohs(current_port), ntohs(port));
2714                 return;
2715         }
2716
2717         priv->vxlan_port = port;
2718         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2719 }
2720
2721 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2722                                    struct udp_tunnel_info *ti)
2723 {
2724         struct mlx4_en_priv *priv = netdev_priv(dev);
2725         __be16 port = ti->port;
2726         __be16 current_port;
2727
2728         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2729                 return;
2730
2731         if (ti->sa_family != AF_INET)
2732                 return;
2733
2734         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2735                 return;
2736
2737         current_port = priv->vxlan_port;
2738         if (current_port != port) {
2739                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2740                 return;
2741         }
2742
2743         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2744 }
2745
2746 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2747                                                 struct net_device *dev,
2748                                                 netdev_features_t features)
2749 {
2750         features = vlan_features_check(skb, features);
2751         features = vxlan_features_check(skb, features);
2752
2753         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2754          * support inner IPv6 checksums and segmentation so  we need to
2755          * strip that feature if this is an IPv6 encapsulated frame.
2756          */
2757         if (skb->encapsulation &&
2758             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2759                 struct mlx4_en_priv *priv = netdev_priv(dev);
2760
2761                 if (!priv->vxlan_port ||
2762                     (ip_hdr(skb)->version != 4) ||
2763                     (udp_hdr(skb)->dest != priv->vxlan_port))
2764                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2765         }
2766
2767         return features;
2768 }
2769
2770 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2771 {
2772         struct mlx4_en_priv *priv = netdev_priv(dev);
2773         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2774         struct mlx4_update_qp_params params;
2775         int err;
2776
2777         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2778                 return -EOPNOTSUPP;
2779
2780         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2781         if (maxrate >> 12) {
2782                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2783                 params.rate_val  = maxrate / 1000;
2784         } else if (maxrate) {
2785                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2786                 params.rate_val  = maxrate;
2787         } else { /* zero serves to revoke the QP rate-limitation */
2788                 params.rate_unit = 0;
2789                 params.rate_val  = 0;
2790         }
2791
2792         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2793                              &params);
2794         return err;
2795 }
2796
2797 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2798 {
2799         struct mlx4_en_priv *priv = netdev_priv(dev);
2800         struct mlx4_en_dev *mdev = priv->mdev;
2801         struct mlx4_en_port_profile new_prof;
2802         struct bpf_prog *old_prog;
2803         struct mlx4_en_priv *tmp;
2804         int tx_changed = 0;
2805         int xdp_ring_num;
2806         int port_up = 0;
2807         int err;
2808         int i;
2809
2810         xdp_ring_num = prog ? priv->rx_ring_num : 0;
2811
2812         /* No need to reconfigure buffers when simply swapping the
2813          * program for a new one.
2814          */
2815         if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2816                 if (prog) {
2817                         prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2818                         if (IS_ERR(prog))
2819                                 return PTR_ERR(prog);
2820                 }
2821                 mutex_lock(&mdev->state_lock);
2822                 for (i = 0; i < priv->rx_ring_num; i++) {
2823                         old_prog = rcu_dereference_protected(
2824                                         priv->rx_ring[i]->xdp_prog,
2825                                         lockdep_is_held(&mdev->state_lock));
2826                         rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2827                         if (old_prog)
2828                                 bpf_prog_put(old_prog);
2829                 }
2830                 mutex_unlock(&mdev->state_lock);
2831                 return 0;
2832         }
2833
2834         if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2835                 return -EOPNOTSUPP;
2836
2837         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2838         if (!tmp)
2839                 return -ENOMEM;
2840
2841         if (prog) {
2842                 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2843                 if (IS_ERR(prog)) {
2844                         err = PTR_ERR(prog);
2845                         goto out;
2846                 }
2847         }
2848
2849         mutex_lock(&mdev->state_lock);
2850         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2851         new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2852
2853         if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2854                 tx_changed = 1;
2855                 new_prof.tx_ring_num[TX] =
2856                         MAX_TX_RINGS - ALIGN(xdp_ring_num, priv->prof->num_up);
2857                 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2858         }
2859
2860         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, false);
2861         if (err) {
2862                 if (prog)
2863                         bpf_prog_sub(prog, priv->rx_ring_num - 1);
2864                 goto unlock_out;
2865         }
2866
2867         if (priv->port_up) {
2868                 port_up = 1;
2869                 mlx4_en_stop_port(dev, 1);
2870         }
2871
2872         mlx4_en_safe_replace_resources(priv, tmp);
2873         if (tx_changed)
2874                 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2875
2876         for (i = 0; i < priv->rx_ring_num; i++) {
2877                 old_prog = rcu_dereference_protected(
2878                                         priv->rx_ring[i]->xdp_prog,
2879                                         lockdep_is_held(&mdev->state_lock));
2880                 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2881                 if (old_prog)
2882                         bpf_prog_put(old_prog);
2883         }
2884
2885         if (port_up) {
2886                 err = mlx4_en_start_port(dev);
2887                 if (err) {
2888                         en_err(priv, "Failed starting port %d for XDP change\n",
2889                                priv->port);
2890                         queue_work(mdev->workqueue, &priv->watchdog_task);
2891                 }
2892         }
2893
2894 unlock_out:
2895         mutex_unlock(&mdev->state_lock);
2896 out:
2897         kfree(tmp);
2898         return err;
2899 }
2900
2901 static u32 mlx4_xdp_query(struct net_device *dev)
2902 {
2903         struct mlx4_en_priv *priv = netdev_priv(dev);
2904         struct mlx4_en_dev *mdev = priv->mdev;
2905         const struct bpf_prog *xdp_prog;
2906         u32 prog_id = 0;
2907
2908         if (!priv->tx_ring_num[TX_XDP])
2909                 return prog_id;
2910
2911         mutex_lock(&mdev->state_lock);
2912         xdp_prog = rcu_dereference_protected(
2913                 priv->rx_ring[0]->xdp_prog,
2914                 lockdep_is_held(&mdev->state_lock));
2915         if (xdp_prog)
2916                 prog_id = xdp_prog->aux->id;
2917         mutex_unlock(&mdev->state_lock);
2918
2919         return prog_id;
2920 }
2921
2922 static int mlx4_xdp(struct net_device *dev, struct netdev_bpf *xdp)
2923 {
2924         switch (xdp->command) {
2925         case XDP_SETUP_PROG:
2926                 return mlx4_xdp_set(dev, xdp->prog);
2927         case XDP_QUERY_PROG:
2928                 xdp->prog_id = mlx4_xdp_query(dev);
2929                 xdp->prog_attached = !!xdp->prog_id;
2930                 return 0;
2931         default:
2932                 return -EINVAL;
2933         }
2934 }
2935
2936 static const struct net_device_ops mlx4_netdev_ops = {
2937         .ndo_open               = mlx4_en_open,
2938         .ndo_stop               = mlx4_en_close,
2939         .ndo_start_xmit         = mlx4_en_xmit,
2940         .ndo_select_queue       = mlx4_en_select_queue,
2941         .ndo_get_stats64        = mlx4_en_get_stats64,
2942         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2943         .ndo_set_mac_address    = mlx4_en_set_mac,
2944         .ndo_validate_addr      = eth_validate_addr,
2945         .ndo_change_mtu         = mlx4_en_change_mtu,
2946         .ndo_do_ioctl           = mlx4_en_ioctl,
2947         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2948         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2949         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2950 #ifdef CONFIG_NET_POLL_CONTROLLER
2951         .ndo_poll_controller    = mlx4_en_netpoll,
2952 #endif
2953         .ndo_set_features       = mlx4_en_set_features,
2954         .ndo_fix_features       = mlx4_en_fix_features,
2955         .ndo_setup_tc           = __mlx4_en_setup_tc,
2956 #ifdef CONFIG_RFS_ACCEL
2957         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2958 #endif
2959         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2960         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2961         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2962         .ndo_features_check     = mlx4_en_features_check,
2963         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2964         .ndo_bpf                = mlx4_xdp,
2965 };
2966
2967 static const struct net_device_ops mlx4_netdev_ops_master = {
2968         .ndo_open               = mlx4_en_open,
2969         .ndo_stop               = mlx4_en_close,
2970         .ndo_start_xmit         = mlx4_en_xmit,
2971         .ndo_select_queue       = mlx4_en_select_queue,
2972         .ndo_get_stats64        = mlx4_en_get_stats64,
2973         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2974         .ndo_set_mac_address    = mlx4_en_set_mac,
2975         .ndo_validate_addr      = eth_validate_addr,
2976         .ndo_change_mtu         = mlx4_en_change_mtu,
2977         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2978         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2979         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2980         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2981         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2982         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2983         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2984         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2985         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2986         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2987 #ifdef CONFIG_NET_POLL_CONTROLLER
2988         .ndo_poll_controller    = mlx4_en_netpoll,
2989 #endif
2990         .ndo_set_features       = mlx4_en_set_features,
2991         .ndo_fix_features       = mlx4_en_fix_features,
2992         .ndo_setup_tc           = __mlx4_en_setup_tc,
2993 #ifdef CONFIG_RFS_ACCEL
2994         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2995 #endif
2996         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2997         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2998         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2999         .ndo_features_check     = mlx4_en_features_check,
3000         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
3001         .ndo_bpf                = mlx4_xdp,
3002 };
3003
3004 struct mlx4_en_bond {
3005         struct work_struct work;
3006         struct mlx4_en_priv *priv;
3007         int is_bonded;
3008         struct mlx4_port_map port_map;
3009 };
3010
3011 static void mlx4_en_bond_work(struct work_struct *work)
3012 {
3013         struct mlx4_en_bond *bond = container_of(work,
3014                                                      struct mlx4_en_bond,
3015                                                      work);
3016         int err = 0;
3017         struct mlx4_dev *dev = bond->priv->mdev->dev;
3018
3019         if (bond->is_bonded) {
3020                 if (!mlx4_is_bonded(dev)) {
3021                         err = mlx4_bond(dev);
3022                         if (err)
3023                                 en_err(bond->priv, "Fail to bond device\n");
3024                 }
3025                 if (!err) {
3026                         err = mlx4_port_map_set(dev, &bond->port_map);
3027                         if (err)
3028                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
3029                                        bond->port_map.port1,
3030                                        bond->port_map.port2,
3031                                        err);
3032                 }
3033         } else if (mlx4_is_bonded(dev)) {
3034                 err = mlx4_unbond(dev);
3035                 if (err)
3036                         en_err(bond->priv, "Fail to unbond device\n");
3037         }
3038         dev_put(bond->priv->dev);
3039         kfree(bond);
3040 }
3041
3042 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
3043                                    u8 v2p_p1, u8 v2p_p2)
3044 {
3045         struct mlx4_en_bond *bond = NULL;
3046
3047         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
3048         if (!bond)
3049                 return -ENOMEM;
3050
3051         INIT_WORK(&bond->work, mlx4_en_bond_work);
3052         bond->priv = priv;
3053         bond->is_bonded = is_bonded;
3054         bond->port_map.port1 = v2p_p1;
3055         bond->port_map.port2 = v2p_p2;
3056         dev_hold(priv->dev);
3057         queue_work(priv->mdev->workqueue, &bond->work);
3058         return 0;
3059 }
3060
3061 int mlx4_en_netdev_event(struct notifier_block *this,
3062                          unsigned long event, void *ptr)
3063 {
3064         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
3065         u8 port = 0;
3066         struct mlx4_en_dev *mdev;
3067         struct mlx4_dev *dev;
3068         int i, num_eth_ports = 0;
3069         bool do_bond = true;
3070         struct mlx4_en_priv *priv;
3071         u8 v2p_port1 = 0;
3072         u8 v2p_port2 = 0;
3073
3074         if (!net_eq(dev_net(ndev), &init_net))
3075                 return NOTIFY_DONE;
3076
3077         mdev = container_of(this, struct mlx4_en_dev, nb);
3078         dev = mdev->dev;
3079
3080         /* Go into this mode only when two network devices set on two ports
3081          * of the same mlx4 device are slaves of the same bonding master
3082          */
3083         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
3084                 ++num_eth_ports;
3085                 if (!port && (mdev->pndev[i] == ndev))
3086                         port = i;
3087                 mdev->upper[i] = mdev->pndev[i] ?
3088                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
3089                 /* condition not met: network device is a slave */
3090                 if (!mdev->upper[i])
3091                         do_bond = false;
3092                 if (num_eth_ports < 2)
3093                         continue;
3094                 /* condition not met: same master */
3095                 if (mdev->upper[i] != mdev->upper[i-1])
3096                         do_bond = false;
3097         }
3098         /* condition not met: 2 salves */
3099         do_bond = (num_eth_ports ==  2) ? do_bond : false;
3100
3101         /* handle only events that come with enough info */
3102         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
3103                 return NOTIFY_DONE;
3104
3105         priv = netdev_priv(ndev);
3106         if (do_bond) {
3107                 struct netdev_notifier_bonding_info *notifier_info = ptr;
3108                 struct netdev_bonding_info *bonding_info =
3109                         &notifier_info->bonding_info;
3110
3111                 /* required mode 1, 2 or 4 */
3112                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
3113                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
3114                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
3115                         do_bond = false;
3116
3117                 /* require exactly 2 slaves */
3118                 if (bonding_info->master.num_slaves != 2)
3119                         do_bond = false;
3120
3121                 /* calc v2p */
3122                 if (do_bond) {
3123                         if (bonding_info->master.bond_mode ==
3124                             BOND_MODE_ACTIVEBACKUP) {
3125                                 /* in active-backup mode virtual ports are
3126                                  * mapped to the physical port of the active
3127                                  * slave */
3128                                 if (bonding_info->slave.state ==
3129                                     BOND_STATE_BACKUP) {
3130                                         if (port == 1) {
3131                                                 v2p_port1 = 2;
3132                                                 v2p_port2 = 2;
3133                                         } else {
3134                                                 v2p_port1 = 1;
3135                                                 v2p_port2 = 1;
3136                                         }
3137                                 } else { /* BOND_STATE_ACTIVE */
3138                                         if (port == 1) {
3139                                                 v2p_port1 = 1;
3140                                                 v2p_port2 = 1;
3141                                         } else {
3142                                                 v2p_port1 = 2;
3143                                                 v2p_port2 = 2;
3144                                         }
3145                                 }
3146                         } else { /* Active-Active */
3147                                 /* in active-active mode a virtual port is
3148                                  * mapped to the native physical port if and only
3149                                  * if the physical port is up */
3150                                 __s8 link = bonding_info->slave.link;
3151
3152                                 if (port == 1)
3153                                         v2p_port2 = 2;
3154                                 else
3155                                         v2p_port1 = 1;
3156                                 if ((link == BOND_LINK_UP) ||
3157                                     (link == BOND_LINK_FAIL)) {
3158                                         if (port == 1)
3159                                                 v2p_port1 = 1;
3160                                         else
3161                                                 v2p_port2 = 2;
3162                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3163                                         if (port == 1)
3164                                                 v2p_port1 = 2;
3165                                         else
3166                                                 v2p_port2 = 1;
3167                                 }
3168                         }
3169                 }
3170         }
3171
3172         mlx4_en_queue_bond_work(priv, do_bond,
3173                                 v2p_port1, v2p_port2);
3174
3175         return NOTIFY_DONE;
3176 }
3177
3178 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3179                                      struct mlx4_en_stats_bitmap *stats_bitmap,
3180                                      u8 rx_ppp, u8 rx_pause,
3181                                      u8 tx_ppp, u8 tx_pause)
3182 {
3183         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3184
3185         if (!mlx4_is_slave(dev) &&
3186             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3187                 mutex_lock(&stats_bitmap->mutex);
3188                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3189
3190                 if (rx_ppp)
3191                         bitmap_set(stats_bitmap->bitmap, last_i,
3192                                    NUM_FLOW_PRIORITY_STATS_RX);
3193                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3194
3195                 if (rx_pause && !(rx_ppp))
3196                         bitmap_set(stats_bitmap->bitmap, last_i,
3197                                    NUM_FLOW_STATS_RX);
3198                 last_i += NUM_FLOW_STATS_RX;
3199
3200                 if (tx_ppp)
3201                         bitmap_set(stats_bitmap->bitmap, last_i,
3202                                    NUM_FLOW_PRIORITY_STATS_TX);
3203                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3204
3205                 if (tx_pause && !(tx_ppp))
3206                         bitmap_set(stats_bitmap->bitmap, last_i,
3207                                    NUM_FLOW_STATS_TX);
3208                 last_i += NUM_FLOW_STATS_TX;
3209
3210                 mutex_unlock(&stats_bitmap->mutex);
3211         }
3212 }
3213
3214 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3215                               struct mlx4_en_stats_bitmap *stats_bitmap,
3216                               u8 rx_ppp, u8 rx_pause,
3217                               u8 tx_ppp, u8 tx_pause)
3218 {
3219         int last_i = 0;
3220
3221         mutex_init(&stats_bitmap->mutex);
3222         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3223
3224         if (mlx4_is_slave(dev)) {
3225                 bitmap_set(stats_bitmap->bitmap, last_i +
3226                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3227                 bitmap_set(stats_bitmap->bitmap, last_i +
3228                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3229                 bitmap_set(stats_bitmap->bitmap, last_i +
3230                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3231                 bitmap_set(stats_bitmap->bitmap, last_i +
3232                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3233                 bitmap_set(stats_bitmap->bitmap, last_i +
3234                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3235                 bitmap_set(stats_bitmap->bitmap, last_i +
3236                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3237         } else {
3238                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3239         }
3240         last_i += NUM_MAIN_STATS;
3241
3242         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3243         last_i += NUM_PORT_STATS;
3244
3245         if (mlx4_is_master(dev))
3246                 bitmap_set(stats_bitmap->bitmap, last_i,
3247                            NUM_PF_STATS);
3248         last_i += NUM_PF_STATS;
3249
3250         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3251                                         rx_ppp, rx_pause,
3252                                         tx_ppp, tx_pause);
3253         last_i += NUM_FLOW_STATS;
3254
3255         if (!mlx4_is_slave(dev))
3256                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3257         last_i += NUM_PKT_STATS;
3258
3259         bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3260         last_i += NUM_XDP_STATS;
3261
3262         if (!mlx4_is_slave(dev))
3263                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PHY_STATS);
3264         last_i += NUM_PHY_STATS;
3265 }
3266
3267 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3268                         struct mlx4_en_port_profile *prof)
3269 {
3270         struct net_device *dev;
3271         struct mlx4_en_priv *priv;
3272         int i, t;
3273         int err;
3274
3275         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3276                                  MAX_TX_RINGS, MAX_RX_RINGS);
3277         if (dev == NULL)
3278                 return -ENOMEM;
3279
3280         netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3281         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3282
3283         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3284         dev->dev_port = port - 1;
3285
3286         /*
3287          * Initialize driver private data
3288          */
3289
3290         priv = netdev_priv(dev);
3291         memset(priv, 0, sizeof(struct mlx4_en_priv));
3292         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3293         spin_lock_init(&priv->stats_lock);
3294         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3295         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3296         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3297         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3298         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3299         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3300         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3301 #ifdef CONFIG_RFS_ACCEL
3302         INIT_LIST_HEAD(&priv->filters);
3303         spin_lock_init(&priv->filters_lock);
3304 #endif
3305
3306         priv->dev = dev;
3307         priv->mdev = mdev;
3308         priv->ddev = &mdev->pdev->dev;
3309         priv->prof = prof;
3310         priv->port = port;
3311         priv->port_up = false;
3312         priv->flags = prof->flags;
3313         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3314         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3315                         MLX4_WQE_CTRL_SOLICITED);
3316         priv->num_tx_rings_p_up = mdev->profile.max_num_tx_rings_p_up;
3317         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3318         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3319
3320         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3321                 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3322                 if (!priv->tx_ring_num[t])
3323                         continue;
3324
3325                 priv->tx_ring[t] = kcalloc(MAX_TX_RINGS,
3326                                            sizeof(struct mlx4_en_tx_ring *),
3327                                            GFP_KERNEL);
3328                 if (!priv->tx_ring[t]) {
3329                         err = -ENOMEM;
3330                         goto out;
3331                 }
3332                 priv->tx_cq[t] = kcalloc(MAX_TX_RINGS,
3333                                          sizeof(struct mlx4_en_cq *),
3334                                          GFP_KERNEL);
3335                 if (!priv->tx_cq[t]) {
3336                         err = -ENOMEM;
3337                         goto out;
3338                 }
3339         }
3340         priv->rx_ring_num = prof->rx_ring_num;
3341         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3342         priv->cqe_size = mdev->dev->caps.cqe_size;
3343         priv->mac_index = -1;
3344         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3345 #ifdef CONFIG_MLX4_EN_DCB
3346         if (!mlx4_is_slave(priv->mdev->dev)) {
3347                 u8 prio;
3348
3349                 for (prio = 0; prio < IEEE_8021QAZ_MAX_TCS; ++prio) {
3350                         priv->ets.prio_tc[prio] = prio;
3351                         priv->ets.tc_tsa[prio]  = IEEE_8021QAZ_TSA_VENDOR;
3352                 }
3353
3354                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3355                         DCB_CAP_DCBX_VER_IEEE;
3356                 priv->flags |= MLX4_EN_DCB_ENABLED;
3357                 priv->cee_config.pfc_state = false;
3358
3359                 for (i = 0; i < MLX4_EN_NUM_UP_HIGH; i++)
3360                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3361
3362                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3363                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3364                 } else {
3365                         en_info(priv, "enabling only PFC DCB ops\n");
3366                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3367                 }
3368         }
3369 #endif
3370
3371         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3372                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3373
3374         /* Query for default mac and max mtu */
3375         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3376
3377         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3378             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3379                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3380
3381         /* Set default MAC */
3382         dev->addr_len = ETH_ALEN;
3383         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3384         if (!is_valid_ether_addr(dev->dev_addr)) {
3385                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3386                        priv->port, dev->dev_addr);
3387                 err = -EINVAL;
3388                 goto out;
3389         } else if (mlx4_is_slave(priv->mdev->dev) &&
3390                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3391                 /* Random MAC was assigned in mlx4_slave_cap
3392                  * in mlx4_core module
3393                  */
3394                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3395                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3396         }
3397
3398         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3399
3400         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3401                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3402         err = mlx4_en_alloc_resources(priv);
3403         if (err)
3404                 goto out;
3405
3406         /* Initialize time stamping config */
3407         priv->hwtstamp_config.flags = 0;
3408         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3409         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3410
3411         /* Allocate page for receive rings */
3412         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3413                                 MLX4_EN_PAGE_SIZE);
3414         if (err) {
3415                 en_err(priv, "Failed to allocate page for rx qps\n");
3416                 goto out;
3417         }
3418         priv->allocated = 1;
3419
3420         /*
3421          * Initialize netdev entry points
3422          */
3423         if (mlx4_is_master(priv->mdev->dev))
3424                 dev->netdev_ops = &mlx4_netdev_ops_master;
3425         else
3426                 dev->netdev_ops = &mlx4_netdev_ops;
3427         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3428         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3429         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3430
3431         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3432
3433         /*
3434          * Set driver features
3435          */
3436         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3437         if (mdev->LSO_support)
3438                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3439
3440         dev->vlan_features = dev->hw_features;
3441
3442         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3443         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3444                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3445                         NETIF_F_HW_VLAN_CTAG_FILTER;
3446         dev->hw_features |= NETIF_F_LOOPBACK |
3447                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3448
3449         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3450                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3451                         NETIF_F_HW_VLAN_STAG_FILTER;
3452                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3453         }
3454
3455         if (mlx4_is_slave(mdev->dev)) {
3456                 bool vlan_offload_disabled;
3457                 int phv;
3458
3459                 err = get_phv_bit(mdev->dev, port, &phv);
3460                 if (!err && phv) {
3461                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3462                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3463                 }
3464                 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3465                                                         &vlan_offload_disabled);
3466                 if (!err && vlan_offload_disabled) {
3467                         dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3468                                               NETIF_F_HW_VLAN_CTAG_RX |
3469                                               NETIF_F_HW_VLAN_STAG_TX |
3470                                               NETIF_F_HW_VLAN_STAG_RX);
3471                         dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3472                                            NETIF_F_HW_VLAN_CTAG_RX |
3473                                            NETIF_F_HW_VLAN_STAG_TX |
3474                                            NETIF_F_HW_VLAN_STAG_RX);
3475                 }
3476         } else {
3477                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3478                     !(mdev->dev->caps.flags2 &
3479                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3480                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3481         }
3482
3483         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3484                 dev->hw_features |= NETIF_F_RXFCS;
3485
3486         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3487                 dev->hw_features |= NETIF_F_RXALL;
3488
3489         if (mdev->dev->caps.steering_mode ==
3490             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3491             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3492                 dev->hw_features |= NETIF_F_NTUPLE;
3493
3494         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3495                 dev->priv_flags |= IFF_UNICAST_FLT;
3496
3497         /* Setting a default hash function value */
3498         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3499                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3500         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3501                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3502         } else {
3503                 en_warn(priv,
3504                         "No RSS hash capabilities exposed, using Toeplitz\n");
3505                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3506         }
3507
3508         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3509                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3510                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3511                                     NETIF_F_GSO_PARTIAL;
3512                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3513                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3514                                     NETIF_F_GSO_PARTIAL;
3515                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3516         }
3517
3518         /* MTU range: 46 - hw-specific max */
3519         dev->min_mtu = MLX4_EN_MIN_MTU;
3520         dev->max_mtu = priv->max_mtu;
3521
3522         mdev->pndev[port] = dev;
3523         mdev->upper[port] = NULL;
3524
3525         netif_carrier_off(dev);
3526         mlx4_en_set_default_moderation(priv);
3527
3528         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3529         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3530
3531         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3532
3533         /* Configure port */
3534         mlx4_en_calc_rx_buf(dev);
3535         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3536                                     priv->rx_skb_size + ETH_FCS_LEN,
3537                                     prof->tx_pause, prof->tx_ppp,
3538                                     prof->rx_pause, prof->rx_ppp);
3539         if (err) {
3540                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3541                        priv->port, err);
3542                 goto out;
3543         }
3544
3545         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3546                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3547                 if (err) {
3548                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3549                                err);
3550                         goto out;
3551                 }
3552         }
3553
3554         /* Init port */
3555         en_warn(priv, "Initializing port\n");
3556         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3557         if (err) {
3558                 en_err(priv, "Failed Initializing port\n");
3559                 goto out;
3560         }
3561         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3562
3563         /* Initialize time stamp mechanism */
3564         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3565                 mlx4_en_init_timestamp(mdev);
3566
3567         queue_delayed_work(mdev->workqueue, &priv->service_task,
3568                            SERVICE_TASK_DELAY);
3569
3570         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3571                                  mdev->profile.prof[priv->port].rx_ppp,
3572                                  mdev->profile.prof[priv->port].rx_pause,
3573                                  mdev->profile.prof[priv->port].tx_ppp,
3574                                  mdev->profile.prof[priv->port].tx_pause);
3575
3576         err = register_netdev(dev);
3577         if (err) {
3578                 en_err(priv, "Netdev registration failed for port %d\n", port);
3579                 goto out;
3580         }
3581
3582         priv->registered = 1;
3583         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3584                                   dev);
3585
3586         return 0;
3587
3588 out:
3589         mlx4_en_destroy_netdev(dev);
3590         return err;
3591 }
3592
3593 int mlx4_en_reset_config(struct net_device *dev,
3594                          struct hwtstamp_config ts_config,
3595                          netdev_features_t features)
3596 {
3597         struct mlx4_en_priv *priv = netdev_priv(dev);
3598         struct mlx4_en_dev *mdev = priv->mdev;
3599         struct mlx4_en_port_profile new_prof;
3600         struct mlx4_en_priv *tmp;
3601         int port_up = 0;
3602         int err = 0;
3603
3604         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3605             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3606             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3607             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3608                 return 0; /* Nothing to change */
3609
3610         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3611             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3612             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3613                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3614                 return -EINVAL;
3615         }
3616
3617         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3618         if (!tmp)
3619                 return -ENOMEM;
3620
3621         mutex_lock(&mdev->state_lock);
3622
3623         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3624         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3625
3626         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof, true);
3627         if (err)
3628                 goto out;
3629
3630         if (priv->port_up) {
3631                 port_up = 1;
3632                 mlx4_en_stop_port(dev, 1);
3633         }
3634
3635         mlx4_en_safe_replace_resources(priv, tmp);
3636
3637         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3638                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3639                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3640                 else
3641                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3642         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3643                 /* RX time-stamping is OFF, update the RX vlan offload
3644                  * to the latest wanted state
3645                  */
3646                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3647                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3648                 else
3649                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3650         }
3651
3652         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3653                 if (features & NETIF_F_RXFCS)
3654                         dev->features |= NETIF_F_RXFCS;
3655                 else
3656                         dev->features &= ~NETIF_F_RXFCS;
3657         }
3658
3659         /* RX vlan offload and RX time-stamping can't co-exist !
3660          * Regardless of the caller's choice,
3661          * Turn Off RX vlan offload in case of time-stamping is ON
3662          */
3663         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3664                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3665                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3666                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3667         }
3668
3669         if (port_up) {
3670                 err = mlx4_en_start_port(dev);
3671                 if (err)
3672                         en_err(priv, "Failed starting port\n");
3673         }
3674
3675 out:
3676         mutex_unlock(&mdev->state_lock);
3677         kfree(tmp);
3678         if (!err)
3679                 netdev_features_change(dev);
3680         return err;
3681 }