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)
  64                 return -EINVAL;
  65
  66         netdev_set_num_tc(dev, up);
  67
  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 static int __mlx4_en_setup_tc(struct net_device *dev, u32 handle, __be16 proto,
  90                               struct tc_to_netdev *tc)
  91 {
  92         if (tc->type != TC_SETUP_MQPRIO)
  93                 return -EINVAL;
  94
  95         return mlx4_en_setup_tc(dev, tc->tc);
  96 }
  97
  98 #ifdef CONFIG_RFS_ACCEL
  99
 100 struct mlx4_en_filter {
 101         struct list_head next;
 102         struct work_struct work;
 103
 104         u8     ip_proto;
 105         __be32 src_ip;
 106         __be32 dst_ip;
 107         __be16 src_port;
 108         __be16 dst_port;
 109
 110         int rxq_index;
 111         struct mlx4_en_priv *priv;
 112         u32 flow_id;                    /* RFS infrastructure id */
 113         int id;                         /* mlx4_en driver id */
 114         u64 reg_id;                     /* Flow steering API id */
 115         u8 activated;                   /* Used to prevent expiry before filter
 116                                          * is attached
 117                                          */
 118         struct hlist_node filter_chain;
 119 };
 120
 121 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv);
 122
 123 static enum mlx4_net_trans_rule_id mlx4_ip_proto_to_trans_rule_id(u8 ip_proto)
 124 {
 125         switch (ip_proto) {
 126         case IPPROTO_UDP:
 127                 return MLX4_NET_TRANS_RULE_ID_UDP;
 128         case IPPROTO_TCP:
 129                 return MLX4_NET_TRANS_RULE_ID_TCP;
 130         default:
 131                 return MLX4_NET_TRANS_RULE_NUM;
 132         }
 133 };
 134
 135 /* Must not acquire state_lock, as its corresponding work_sync
 136  * is done under it.
 137  */
 138 static void mlx4_en_filter_work(struct work_struct *work)
 139 {
 140         struct mlx4_en_filter *filter = container_of(work,
 141                                                      struct mlx4_en_filter,
 142                                                      work);
 143         struct mlx4_en_priv *priv = filter->priv;
 144         struct mlx4_spec_list spec_tcp_udp = {
 145                 .id = mlx4_ip_proto_to_trans_rule_id(filter->ip_proto),
 146                 {
 147                         .tcp_udp = {
 148                                 .dst_port = filter->dst_port,
 149                                 .dst_port_msk = (__force __be16)-1,
 150                                 .src_port = filter->src_port,
 151                                 .src_port_msk = (__force __be16)-1,
 152                         },
 153                 },
 154         };
 155         struct mlx4_spec_list spec_ip = {
 156                 .id = MLX4_NET_TRANS_RULE_ID_IPV4,
 157                 {
 158                         .ipv4 = {
 159                                 .dst_ip = filter->dst_ip,
 160                                 .dst_ip_msk = (__force __be32)-1,
 161                                 .src_ip = filter->src_ip,
 162                                 .src_ip_msk = (__force __be32)-1,
 163                         },
 164                 },
 165         };
 166         struct mlx4_spec_list spec_eth = {
 167                 .id = MLX4_NET_TRANS_RULE_ID_ETH,
 168         };
 169         struct mlx4_net_trans_rule rule = {
 170                 .list = LIST_HEAD_INIT(rule.list),
 171                 .queue_mode = MLX4_NET_TRANS_Q_LIFO,
 172                 .exclusive = 1,
 173                 .allow_loopback = 1,
 174                 .promisc_mode = MLX4_FS_REGULAR,
 175                 .port = priv->port,
 176                 .priority = MLX4_DOMAIN_RFS,
 177         };
 178         int rc;
 179         __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 180
 181         if (spec_tcp_udp.id >= MLX4_NET_TRANS_RULE_NUM) {
 182                 en_warn(priv, "RFS: ignoring unsupported ip protocol (%d)\n",
 183                         filter->ip_proto);
 184                 goto ignore;
 185         }
 186         list_add_tail(&spec_eth.list, &rule.list);
 187         list_add_tail(&spec_ip.list, &rule.list);
 188         list_add_tail(&spec_tcp_udp.list, &rule.list);
 189
 190         rule.qpn = priv->rss_map.qps[filter->rxq_index].qpn;
 191         memcpy(spec_eth.eth.dst_mac, priv->dev->dev_addr, ETH_ALEN);
 192         memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 193
 194         filter->activated = 0;
 195
 196         if (filter->reg_id) {
 197                 rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 198                 if (rc && rc != -ENOENT)
 199                         en_err(priv, "Error detaching flow. rc = %d\n", rc);
 200         }
 201
 202         rc = mlx4_flow_attach(priv->mdev->dev, &rule, &filter->reg_id);
 203         if (rc)
 204                 en_err(priv, "Error attaching flow. err = %d\n", rc);
 205
 206 ignore:
 207         mlx4_en_filter_rfs_expire(priv);
 208
 209         filter->activated = 1;
 210 }
 211
 212 static inline struct hlist_head *
 213 filter_hash_bucket(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 214                    __be16 src_port, __be16 dst_port)
 215 {
 216         unsigned long l;
 217         int bucket_idx;
 218
 219         l = (__force unsigned long)src_port |
 220             ((__force unsigned long)dst_port << 2);
 221         l ^= (__force unsigned long)(src_ip ^ dst_ip);
 222
 223         bucket_idx = hash_long(l, MLX4_EN_FILTER_HASH_SHIFT);
 224
 225         return &priv->filter_hash[bucket_idx];
 226 }
 227
 228 static struct mlx4_en_filter *
 229 mlx4_en_filter_alloc(struct mlx4_en_priv *priv, int rxq_index, __be32 src_ip,
 230                      __be32 dst_ip, u8 ip_proto, __be16 src_port,
 231                      __be16 dst_port, u32 flow_id)
 232 {
 233         struct mlx4_en_filter *filter = NULL;
 234
 235         filter = kzalloc(sizeof(struct mlx4_en_filter), GFP_ATOMIC);
 236         if (!filter)
 237                 return NULL;
 238
 239         filter->priv = priv;
 240         filter->rxq_index = rxq_index;
 241         INIT_WORK(&filter->work, mlx4_en_filter_work);
 242
 243         filter->src_ip = src_ip;
 244         filter->dst_ip = dst_ip;
 245         filter->ip_proto = ip_proto;
 246         filter->src_port = src_port;
 247         filter->dst_port = dst_port;
 248
 249         filter->flow_id = flow_id;
 250
 251         filter->id = priv->last_filter_id++ % RPS_NO_FILTER;
 252
 253         list_add_tail(&filter->next, &priv->filters);
 254         hlist_add_head(&filter->filter_chain,
 255                        filter_hash_bucket(priv, src_ip, dst_ip, src_port,
 256                                           dst_port));
 257
 258         return filter;
 259 }
 260
 261 static void mlx4_en_filter_free(struct mlx4_en_filter *filter)
 262 {
 263         struct mlx4_en_priv *priv = filter->priv;
 264         int rc;
 265
 266         list_del(&filter->next);
 267
 268         rc = mlx4_flow_detach(priv->mdev->dev, filter->reg_id);
 269         if (rc && rc != -ENOENT)
 270                 en_err(priv, "Error detaching flow. rc = %d\n", rc);
 271
 272         kfree(filter);
 273 }
 274
 275 static inline struct mlx4_en_filter *
 276 mlx4_en_filter_find(struct mlx4_en_priv *priv, __be32 src_ip, __be32 dst_ip,
 277                     u8 ip_proto, __be16 src_port, __be16 dst_port)
 278 {
 279         struct mlx4_en_filter *filter;
 280         struct mlx4_en_filter *ret = NULL;
 281
 282         hlist_for_each_entry(filter,
 283                              filter_hash_bucket(priv, src_ip, dst_ip,
 284                                                 src_port, dst_port),
 285                              filter_chain) {
 286                 if (filter->src_ip == src_ip &&
 287                     filter->dst_ip == dst_ip &&
 288                     filter->ip_proto == ip_proto &&
 289                     filter->src_port == src_port &&
 290                     filter->dst_port == dst_port) {
 291                         ret = filter;
 292                         break;
 293                 }
 294         }
 295
 296         return ret;
 297 }
 298
 299 static int
 300 mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
 301                    u16 rxq_index, u32 flow_id)
 302 {
 303         struct mlx4_en_priv *priv = netdev_priv(net_dev);
 304         struct mlx4_en_filter *filter;
 305         const struct iphdr *ip;
 306         const __be16 *ports;
 307         u8 ip_proto;
 308         __be32 src_ip;
 309         __be32 dst_ip;
 310         __be16 src_port;
 311         __be16 dst_port;
 312         int nhoff = skb_network_offset(skb);
 313         int ret = 0;
 314
 315         if (skb->protocol != htons(ETH_P_IP))
 316                 return -EPROTONOSUPPORT;
 317
 318         ip = (const struct iphdr *)(skb->data + nhoff);
 319         if (ip_is_fragment(ip))
 320                 return -EPROTONOSUPPORT;
 321
 322         if ((ip->protocol != IPPROTO_TCP) && (ip->protocol != IPPROTO_UDP))
 323                 return -EPROTONOSUPPORT;
 324         ports = (const __be16 *)(skb->data + nhoff + 4 * ip->ihl);
 325
 326         ip_proto = ip->protocol;
 327         src_ip = ip->saddr;
 328         dst_ip = ip->daddr;
 329         src_port = ports[0];
 330         dst_port = ports[1];
 331
 332         spin_lock_bh(&priv->filters_lock);
 333         filter = mlx4_en_filter_find(priv, src_ip, dst_ip, ip_proto,
 334                                      src_port, dst_port);
 335         if (filter) {
 336                 if (filter->rxq_index == rxq_index)
 337                         goto out;
 338
 339                 filter->rxq_index = rxq_index;
 340         } else {
 341                 filter = mlx4_en_filter_alloc(priv, rxq_index,
 342                                               src_ip, dst_ip, ip_proto,
 343                                               src_port, dst_port, flow_id);
 344                 if (!filter) {
 345                         ret = -ENOMEM;
 346                         goto err;
 347                 }
 348         }
 349
 350         queue_work(priv->mdev->workqueue, &filter->work);
 351
 352 out:
 353         ret = filter->id;
 354 err:
 355         spin_unlock_bh(&priv->filters_lock);
 356
 357         return ret;
 358 }
 359
 360 void mlx4_en_cleanup_filters(struct mlx4_en_priv *priv)
 361 {
 362         struct mlx4_en_filter *filter, *tmp;
 363         LIST_HEAD(del_list);
 364
 365         spin_lock_bh(&priv->filters_lock);
 366         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 367                 list_move(&filter->next, &del_list);
 368                 hlist_del(&filter->filter_chain);
 369         }
 370         spin_unlock_bh(&priv->filters_lock);
 371
 372         list_for_each_entry_safe(filter, tmp, &del_list, next) {
 373                 cancel_work_sync(&filter->work);
 374                 mlx4_en_filter_free(filter);
 375         }
 376 }
 377
 378 static void mlx4_en_filter_rfs_expire(struct mlx4_en_priv *priv)
 379 {
 380         struct mlx4_en_filter *filter = NULL, *tmp, *last_filter = NULL;
 381         LIST_HEAD(del_list);
 382         int i = 0;
 383
 384         spin_lock_bh(&priv->filters_lock);
 385         list_for_each_entry_safe(filter, tmp, &priv->filters, next) {
 386                 if (i > MLX4_EN_FILTER_EXPIRY_QUOTA)
 387                         break;
 388
 389                 if (filter->activated &&
 390                     !work_pending(&filter->work) &&
 391                     rps_may_expire_flow(priv->dev,
 392                                         filter->rxq_index, filter->flow_id,
 393                                         filter->id)) {
 394                         list_move(&filter->next, &del_list);
 395                         hlist_del(&filter->filter_chain);
 396                 } else
 397                         last_filter = filter;
 398
 399                 i++;
 400         }
 401
 402         if (last_filter && (&last_filter->next != priv->filters.next))
 403                 list_move(&priv->filters, &last_filter->next);
 404
 405         spin_unlock_bh(&priv->filters_lock);
 406
 407         list_for_each_entry_safe(filter, tmp, &del_list, next)
 408                 mlx4_en_filter_free(filter);
 409 }
 410 #endif
 411
 412 static int mlx4_en_vlan_rx_add_vid(struct net_device *dev,
 413                                    __be16 proto, u16 vid)
 414 {
 415         struct mlx4_en_priv *priv = netdev_priv(dev);
 416         struct mlx4_en_dev *mdev = priv->mdev;
 417         int err;
 418         int idx;
 419
 420         en_dbg(HW, priv, "adding VLAN:%d\n", vid);
 421
 422         set_bit(vid, priv->active_vlans);
 423
 424         /* Add VID to port VLAN filter */
 425         mutex_lock(&mdev->state_lock);
 426         if (mdev->device_up && priv->port_up) {
 427                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 428                 if (err) {
 429                         en_err(priv, "Failed configuring VLAN filter\n");
 430                         goto out;
 431                 }
 432         }
 433         err = mlx4_register_vlan(mdev->dev, priv->port, vid, &idx);
 434         if (err)
 435                 en_dbg(HW, priv, "Failed adding vlan %d\n", vid);
 436
 437 out:
 438         mutex_unlock(&mdev->state_lock);
 439         return err;
 440 }
 441
 442 static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev,
 443                                     __be16 proto, u16 vid)
 444 {
 445         struct mlx4_en_priv *priv = netdev_priv(dev);
 446         struct mlx4_en_dev *mdev = priv->mdev;
 447         int err = 0;
 448
 449         en_dbg(HW, priv, "Killing VID:%d\n", vid);
 450
 451         clear_bit(vid, priv->active_vlans);
 452
 453         /* Remove VID from port VLAN filter */
 454         mutex_lock(&mdev->state_lock);
 455         mlx4_unregister_vlan(mdev->dev, priv->port, vid);
 456
 457         if (mdev->device_up && priv->port_up) {
 458                 err = mlx4_SET_VLAN_FLTR(mdev->dev, priv);
 459                 if (err)
 460                         en_err(priv, "Failed configuring VLAN filter\n");
 461         }
 462         mutex_unlock(&mdev->state_lock);
 463
 464         return err;
 465 }
 466
 467 static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac)
 468 {
 469         int i;
 470         for (i = ETH_ALEN - 1; i >= 0; --i) {
 471                 dst_mac[i] = src_mac & 0xff;
 472                 src_mac >>= 8;
 473         }
 474         memset(&dst_mac[ETH_ALEN], 0, 2);
 475 }
 476
 477
 478 static int mlx4_en_tunnel_steer_add(struct mlx4_en_priv *priv, unsigned char *addr,
 479                                     int qpn, u64 *reg_id)
 480 {
 481         int err;
 482
 483         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN ||
 484             priv->mdev->dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC)
 485                 return 0; /* do nothing */
 486
 487         err = mlx4_tunnel_steer_add(priv->mdev->dev, addr, priv->port, qpn,
 488                                     MLX4_DOMAIN_NIC, reg_id);
 489         if (err) {
 490                 en_err(priv, "failed to add vxlan steering rule, err %d\n", err);
 491                 return err;
 492         }
 493         en_dbg(DRV, priv, "added vxlan steering rule, mac %pM reg_id %llx\n", addr, *reg_id);
 494         return 0;
 495 }
 496
 497
 498 static int mlx4_en_uc_steer_add(struct mlx4_en_priv *priv,
 499                                 unsigned char *mac, int *qpn, u64 *reg_id)
 500 {
 501         struct mlx4_en_dev *mdev = priv->mdev;
 502         struct mlx4_dev *dev = mdev->dev;
 503         int err;
 504
 505         switch (dev->caps.steering_mode) {
 506         case MLX4_STEERING_MODE_B0: {
 507                 struct mlx4_qp qp;
 508                 u8 gid[16] = {0};
 509
 510                 qp.qpn = *qpn;
 511                 memcpy(&gid[10], mac, ETH_ALEN);
 512                 gid[5] = priv->port;
 513
 514                 err = mlx4_unicast_attach(dev, &qp, gid, 0, MLX4_PROT_ETH);
 515                 break;
 516         }
 517         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 518                 struct mlx4_spec_list spec_eth = { {NULL} };
 519                 __be64 mac_mask = cpu_to_be64(MLX4_MAC_MASK << 16);
 520
 521                 struct mlx4_net_trans_rule rule = {
 522                         .queue_mode = MLX4_NET_TRANS_Q_FIFO,
 523                         .exclusive = 0,
 524                         .allow_loopback = 1,
 525                         .promisc_mode = MLX4_FS_REGULAR,
 526                         .priority = MLX4_DOMAIN_NIC,
 527                 };
 528
 529                 rule.port = priv->port;
 530                 rule.qpn = *qpn;
 531                 INIT_LIST_HEAD(&rule.list);
 532
 533                 spec_eth.id = MLX4_NET_TRANS_RULE_ID_ETH;
 534                 memcpy(spec_eth.eth.dst_mac, mac, ETH_ALEN);
 535                 memcpy(spec_eth.eth.dst_mac_msk, &mac_mask, ETH_ALEN);
 536                 list_add_tail(&spec_eth.list, &rule.list);
 537
 538                 err = mlx4_flow_attach(dev, &rule, reg_id);
 539                 break;
 540         }
 541         default:
 542                 return -EINVAL;
 543         }
 544         if (err)
 545                 en_warn(priv, "Failed Attaching Unicast\n");
 546
 547         return err;
 548 }
 549
 550 static void mlx4_en_uc_steer_release(struct mlx4_en_priv *priv,
 551                                      unsigned char *mac, int qpn, u64 reg_id)
 552 {
 553         struct mlx4_en_dev *mdev = priv->mdev;
 554         struct mlx4_dev *dev = mdev->dev;
 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                 mlx4_unicast_detach(dev, &qp, gid, MLX4_PROT_ETH);
 566                 break;
 567         }
 568         case MLX4_STEERING_MODE_DEVICE_MANAGED: {
 569                 mlx4_flow_detach(dev, reg_id);
 570                 break;
 571         }
 572         default:
 573                 en_err(priv, "Invalid steering mode.\n");
 574         }
 575 }
 576
 577 static int mlx4_en_get_qp(struct mlx4_en_priv *priv)
 578 {
 579         struct mlx4_en_dev *mdev = priv->mdev;
 580         struct mlx4_dev *dev = mdev->dev;
 581         int index = 0;
 582         int err = 0;
 583         int *qpn = &priv->base_qpn;
 584         u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 585
 586         en_dbg(DRV, priv, "Registering MAC: %pM for adding\n",
 587                priv->dev->dev_addr);
 588         index = mlx4_register_mac(dev, priv->port, mac);
 589         if (index < 0) {
 590                 err = index;
 591                 en_err(priv, "Failed adding MAC: %pM\n",
 592                        priv->dev->dev_addr);
 593                 return err;
 594         }
 595
 596         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 597                 int base_qpn = mlx4_get_base_qpn(dev, priv->port);
 598                 *qpn = base_qpn + index;
 599                 return 0;
 600         }
 601
 602         err = mlx4_qp_reserve_range(dev, 1, 1, qpn, MLX4_RESERVE_A0_QP);
 603         en_dbg(DRV, priv, "Reserved qp %d\n", *qpn);
 604         if (err) {
 605                 en_err(priv, "Failed to reserve qp for mac registration\n");
 606                 mlx4_unregister_mac(dev, priv->port, mac);
 607                 return err;
 608         }
 609
 610         return 0;
 611 }
 612
 613 static void mlx4_en_put_qp(struct mlx4_en_priv *priv)
 614 {
 615         struct mlx4_en_dev *mdev = priv->mdev;
 616         struct mlx4_dev *dev = mdev->dev;
 617         int qpn = priv->base_qpn;
 618
 619         if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) {
 620                 u64 mac = mlx4_mac_to_u64(priv->dev->dev_addr);
 621                 en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n",
 622                        priv->dev->dev_addr);
 623                 mlx4_unregister_mac(dev, priv->port, mac);
 624         } else {
 625                 en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n",
 626                        priv->port, qpn);
 627                 mlx4_qp_release_range(dev, qpn, 1);
 628                 priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
 629         }
 630 }
 631
 632 static int mlx4_en_replace_mac(struct mlx4_en_priv *priv, int qpn,
 633                                unsigned char *new_mac, unsigned char *prev_mac)
 634 {
 635         struct mlx4_en_dev *mdev = priv->mdev;
 636         struct mlx4_dev *dev = mdev->dev;
 637         int err = 0;
 638         u64 new_mac_u64 = mlx4_mac_to_u64(new_mac);
 639
 640         if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) {
 641                 struct hlist_head *bucket;
 642                 unsigned int mac_hash;
 643                 struct mlx4_mac_entry *entry;
 644                 struct hlist_node *tmp;
 645                 u64 prev_mac_u64 = mlx4_mac_to_u64(prev_mac);
 646
 647                 bucket = &priv->mac_hash[prev_mac[MLX4_EN_MAC_HASH_IDX]];
 648                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
 649                         if (ether_addr_equal_64bits(entry->mac, prev_mac)) {
 650                                 mlx4_en_uc_steer_release(priv, entry->mac,
 651                                                          qpn, entry->reg_id);
 652                                 mlx4_unregister_mac(dev, priv->port,
 653                                                     prev_mac_u64);
 654                                 hlist_del_rcu(&entry->hlist);
 655                                 synchronize_rcu();
 656                                 memcpy(entry->mac, new_mac, ETH_ALEN);
 657                                 entry->reg_id = 0;
 658                                 mac_hash = new_mac[MLX4_EN_MAC_HASH_IDX];
 659                                 hlist_add_head_rcu(&entry->hlist,
 660                                                    &priv->mac_hash[mac_hash]);
 661                                 mlx4_register_mac(dev, priv->port, new_mac_u64);
 662                                 err = mlx4_en_uc_steer_add(priv, new_mac,
 663                                                            &qpn,
 664                                                            &entry->reg_id);
 665                                 if (err)
 666                                         return err;
 667                                 if (priv->tunnel_reg_id) {
 668                                         mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
 669                                         priv->tunnel_reg_id = 0;
 670                                 }
 671                                 err = mlx4_en_tunnel_steer_add(priv, new_mac, qpn,
 672                                                                &priv->tunnel_reg_id);
 673                                 return err;
 674                         }
 675                 }
 676                 return -EINVAL;
 677         }
 678
 679         return __mlx4_replace_mac(dev, priv->port, qpn, new_mac_u64);
 680 }
 681
 682 static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv,
 683                               unsigned char new_mac[ETH_ALEN + 2])
 684 {
 685         int err = 0;
 686
 687         if (priv->port_up) {
 688                 /* Remove old MAC and insert the new one */
 689                 err = mlx4_en_replace_mac(priv, priv->base_qpn,
 690                                           new_mac, priv->current_mac);
 691                 if (err)
 692                         en_err(priv, "Failed changing HW MAC address\n");
 693         } else
 694                 en_dbg(HW, priv, "Port is down while registering mac, exiting...\n");
 695
 696         if (!err)
 697                 memcpy(priv->current_mac, new_mac, sizeof(priv->current_mac));
 698
 699         return err;
 700 }
 701
 702 static int mlx4_en_set_mac(struct net_device *dev, void *addr)
 703 {
 704         struct mlx4_en_priv *priv = netdev_priv(dev);
 705         struct mlx4_en_dev *mdev = priv->mdev;
 706         struct sockaddr *saddr = addr;
 707         unsigned char new_mac[ETH_ALEN + 2];
 708         int err;
 709
 710         if (!is_valid_ether_addr(saddr->sa_data))
 711                 return -EADDRNOTAVAIL;
 712
 713         mutex_lock(&mdev->state_lock);
 714         memcpy(new_mac, saddr->sa_data, ETH_ALEN);
 715         err = mlx4_en_do_set_mac(priv, new_mac);
 716         if (!err)
 717                 memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
 718         mutex_unlock(&mdev->state_lock);
 719
 720         return err;
 721 }
 722
 723 static void mlx4_en_clear_list(struct net_device *dev)
 724 {
 725         struct mlx4_en_priv *priv = netdev_priv(dev);
 726         struct mlx4_en_mc_list *tmp, *mc_to_del;
 727
 728         list_for_each_entry_safe(mc_to_del, tmp, &priv->mc_list, list) {
 729                 list_del(&mc_to_del->list);
 730                 kfree(mc_to_del);
 731         }
 732 }
 733
 734 static void mlx4_en_cache_mclist(struct net_device *dev)
 735 {
 736         struct mlx4_en_priv *priv = netdev_priv(dev);
 737         struct netdev_hw_addr *ha;
 738         struct mlx4_en_mc_list *tmp;
 739
 740         mlx4_en_clear_list(dev);
 741         netdev_for_each_mc_addr(ha, dev) {
 742                 tmp = kzalloc(sizeof(struct mlx4_en_mc_list), GFP_ATOMIC);
 743                 if (!tmp) {
 744                         mlx4_en_clear_list(dev);
 745                         return;
 746                 }
 747                 memcpy(tmp->addr, ha->addr, ETH_ALEN);
 748                 list_add_tail(&tmp->list, &priv->mc_list);
 749         }
 750 }
 751
 752 static void update_mclist_flags(struct mlx4_en_priv *priv,
 753                                 struct list_head *dst,
 754                                 struct list_head *src)
 755 {
 756         struct mlx4_en_mc_list *dst_tmp, *src_tmp, *new_mc;
 757         bool found;
 758
 759         /* Find all the entries that should be removed from dst,
 760          * These are the entries that are not found in src
 761          */
 762         list_for_each_entry(dst_tmp, dst, list) {
 763                 found = false;
 764                 list_for_each_entry(src_tmp, src, list) {
 765                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 766                                 found = true;
 767                                 break;
 768                         }
 769                 }
 770                 if (!found)
 771                         dst_tmp->action = MCLIST_REM;
 772         }
 773
 774         /* Add entries that exist in src but not in dst
 775          * mark them as need to add
 776          */
 777         list_for_each_entry(src_tmp, src, list) {
 778                 found = false;
 779                 list_for_each_entry(dst_tmp, dst, list) {
 780                         if (ether_addr_equal(dst_tmp->addr, src_tmp->addr)) {
 781                                 dst_tmp->action = MCLIST_NONE;
 782                                 found = true;
 783                                 break;
 784                         }
 785                 }
 786                 if (!found) {
 787                         new_mc = kmemdup(src_tmp,
 788                                          sizeof(struct mlx4_en_mc_list),
 789                                          GFP_KERNEL);
 790                         if (!new_mc)
 791                                 return;
 792
 793                         new_mc->action = MCLIST_ADD;
 794                         list_add_tail(&new_mc->list, dst);
 795                 }
 796         }
 797 }
 798
 799 static void mlx4_en_set_rx_mode(struct net_device *dev)
 800 {
 801         struct mlx4_en_priv *priv = netdev_priv(dev);
 802
 803         if (!priv->port_up)
 804                 return;
 805
 806         queue_work(priv->mdev->workqueue, &priv->rx_mode_task);
 807 }
 808
 809 static void mlx4_en_set_promisc_mode(struct mlx4_en_priv *priv,
 810                                      struct mlx4_en_dev *mdev)
 811 {
 812         int err = 0;
 813
 814         if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
 815                 if (netif_msg_rx_status(priv))
 816                         en_warn(priv, "Entering promiscuous mode\n");
 817                 priv->flags |= MLX4_EN_FLAG_PROMISC;
 818
 819                 /* Enable promiscouos mode */
 820                 switch (mdev->dev->caps.steering_mode) {
 821                 case MLX4_STEERING_MODE_DEVICE_MANAGED:
 822                         err = mlx4_flow_steer_promisc_add(mdev->dev,
 823                                                           priv->port,
 824                                                           priv->base_qpn,
 825                                                           MLX4_FS_ALL_DEFAULT);
 826                         if (err)
 827                                 en_err(priv, "Failed enabling promiscuous mode\n");
 828                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 829                         break;
 830
 831                 case MLX4_STEERING_MODE_B0:
 832                         err = mlx4_unicast_promisc_add(mdev->dev,
 833                                                        priv->base_qpn,
 834                                                        priv->port);
 835                         if (err)
 836                                 en_err(priv, "Failed enabling unicast promiscuous mode\n");
 837
 838                         /* Add the default qp number as multicast
 839                          * promisc
 840                          */
 841                         if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 842                                 err = mlx4_multicast_promisc_add(mdev->dev,
 843                                                                  priv->base_qpn,
 844                                                                  priv->port);
 845                                 if (err)
 846                                         en_err(priv, "Failed enabling multicast promiscuous mode\n");
 847                                 priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 848                         }
 849                         break;
 850
 851                 case MLX4_STEERING_MODE_A0:
 852                         err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 853                                                      priv->port,
 854                                                      priv->base_qpn,
 855                                                      1);
 856                         if (err)
 857                                 en_err(priv, "Failed enabling promiscuous mode\n");
 858                         break;
 859                 }
 860
 861                 /* Disable port multicast filter (unconditionally) */
 862                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 863                                           0, MLX4_MCAST_DISABLE);
 864                 if (err)
 865                         en_err(priv, "Failed disabling multicast filter\n");
 866         }
 867 }
 868
 869 static void mlx4_en_clear_promisc_mode(struct mlx4_en_priv *priv,
 870                                        struct mlx4_en_dev *mdev)
 871 {
 872         int err = 0;
 873
 874         if (netif_msg_rx_status(priv))
 875                 en_warn(priv, "Leaving promiscuous mode\n");
 876         priv->flags &= ~MLX4_EN_FLAG_PROMISC;
 877
 878         /* Disable promiscouos mode */
 879         switch (mdev->dev->caps.steering_mode) {
 880         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 881                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 882                                                      priv->port,
 883                                                      MLX4_FS_ALL_DEFAULT);
 884                 if (err)
 885                         en_err(priv, "Failed disabling promiscuous mode\n");
 886                 priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 887                 break;
 888
 889         case MLX4_STEERING_MODE_B0:
 890                 err = mlx4_unicast_promisc_remove(mdev->dev,
 891                                                   priv->base_qpn,
 892                                                   priv->port);
 893                 if (err)
 894                         en_err(priv, "Failed disabling unicast promiscuous mode\n");
 895                 /* Disable Multicast promisc */
 896                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 897                         err = mlx4_multicast_promisc_remove(mdev->dev,
 898                                                             priv->base_qpn,
 899                                                             priv->port);
 900                         if (err)
 901                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 902                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 903                 }
 904                 break;
 905
 906         case MLX4_STEERING_MODE_A0:
 907                 err = mlx4_SET_PORT_qpn_calc(mdev->dev,
 908                                              priv->port,
 909                                              priv->base_qpn, 0);
 910                 if (err)
 911                         en_err(priv, "Failed disabling promiscuous mode\n");
 912                 break;
 913         }
 914 }
 915
 916 static void mlx4_en_do_multicast(struct mlx4_en_priv *priv,
 917                                  struct net_device *dev,
 918                                  struct mlx4_en_dev *mdev)
 919 {
 920         struct mlx4_en_mc_list *mclist, *tmp;
 921         u64 mcast_addr = 0;
 922         u8 mc_list[16] = {0};
 923         int err = 0;
 924
 925         /* Enable/disable the multicast filter according to IFF_ALLMULTI */
 926         if (dev->flags & IFF_ALLMULTI) {
 927                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 928                                           0, MLX4_MCAST_DISABLE);
 929                 if (err)
 930                         en_err(priv, "Failed disabling multicast filter\n");
 931
 932                 /* Add the default qp number as multicast promisc */
 933                 if (!(priv->flags & MLX4_EN_FLAG_MC_PROMISC)) {
 934                         switch (mdev->dev->caps.steering_mode) {
 935                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 936                                 err = mlx4_flow_steer_promisc_add(mdev->dev,
 937                                                                   priv->port,
 938                                                                   priv->base_qpn,
 939                                                                   MLX4_FS_MC_DEFAULT);
 940                                 break;
 941
 942                         case MLX4_STEERING_MODE_B0:
 943                                 err = mlx4_multicast_promisc_add(mdev->dev,
 944                                                                  priv->base_qpn,
 945                                                                  priv->port);
 946                                 break;
 947
 948                         case MLX4_STEERING_MODE_A0:
 949                                 break;
 950                         }
 951                         if (err)
 952                                 en_err(priv, "Failed entering multicast promisc mode\n");
 953                         priv->flags |= MLX4_EN_FLAG_MC_PROMISC;
 954                 }
 955         } else {
 956                 /* Disable Multicast promisc */
 957                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
 958                         switch (mdev->dev->caps.steering_mode) {
 959                         case MLX4_STEERING_MODE_DEVICE_MANAGED:
 960                                 err = mlx4_flow_steer_promisc_remove(mdev->dev,
 961                                                                      priv->port,
 962                                                                      MLX4_FS_MC_DEFAULT);
 963                                 break;
 964
 965                         case MLX4_STEERING_MODE_B0:
 966                                 err = mlx4_multicast_promisc_remove(mdev->dev,
 967                                                                     priv->base_qpn,
 968                                                                     priv->port);
 969                                 break;
 970
 971                         case MLX4_STEERING_MODE_A0:
 972                                 break;
 973                         }
 974                         if (err)
 975                                 en_err(priv, "Failed disabling multicast promiscuous mode\n");
 976                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
 977                 }
 978
 979                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 980                                           0, MLX4_MCAST_DISABLE);
 981                 if (err)
 982                         en_err(priv, "Failed disabling multicast filter\n");
 983
 984                 /* Flush mcast filter and init it with broadcast address */
 985                 mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
 986                                     1, MLX4_MCAST_CONFIG);
 987
 988                 /* Update multicast list - we cache all addresses so they won't
 989                  * change while HW is updated holding the command semaphor */
 990                 netif_addr_lock_bh(dev);
 991                 mlx4_en_cache_mclist(dev);
 992                 netif_addr_unlock_bh(dev);
 993                 list_for_each_entry(mclist, &priv->mc_list, list) {
 994                         mcast_addr = mlx4_mac_to_u64(mclist->addr);
 995                         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
 996                                             mcast_addr, 0, MLX4_MCAST_CONFIG);
 997                 }
 998                 err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
 999                                           0, MLX4_MCAST_ENABLE);
1000                 if (err)
1001                         en_err(priv, "Failed enabling multicast filter\n");
1002
1003                 update_mclist_flags(priv, &priv->curr_list, &priv->mc_list);
1004                 list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1005                         if (mclist->action == MCLIST_REM) {
1006                                 /* detach this address and delete from list */
1007                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1008                                 mc_list[5] = priv->port;
1009                                 err = mlx4_multicast_detach(mdev->dev,
1010                                                             &priv->rss_map.indir_qp,
1011                                                             mc_list,
1012                                                             MLX4_PROT_ETH,
1013                                                             mclist->reg_id);
1014                                 if (err)
1015                                         en_err(priv, "Fail to detach multicast address\n");
1016
1017                                 if (mclist->tunnel_reg_id) {
1018                                         err = mlx4_flow_detach(priv->mdev->dev, mclist->tunnel_reg_id);
1019                                         if (err)
1020                                                 en_err(priv, "Failed to detach multicast address\n");
1021                                 }
1022
1023                                 /* remove from list */
1024                                 list_del(&mclist->list);
1025                                 kfree(mclist);
1026                         } else if (mclist->action == MCLIST_ADD) {
1027                                 /* attach the address */
1028                                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1029                                 /* needed for B0 steering support */
1030                                 mc_list[5] = priv->port;
1031                                 err = mlx4_multicast_attach(mdev->dev,
1032                                                             &priv->rss_map.indir_qp,
1033                                                             mc_list,
1034                                                             priv->port, 0,
1035                                                             MLX4_PROT_ETH,
1036                                                             &mclist->reg_id);
1037                                 if (err)
1038                                         en_err(priv, "Fail to attach multicast address\n");
1039
1040                                 err = mlx4_en_tunnel_steer_add(priv, &mc_list[10], priv->base_qpn,
1041                                                                &mclist->tunnel_reg_id);
1042                                 if (err)
1043                                         en_err(priv, "Failed to attach multicast address\n");
1044                         }
1045                 }
1046         }
1047 }
1048
1049 static void mlx4_en_do_uc_filter(struct mlx4_en_priv *priv,
1050                                  struct net_device *dev,
1051                                  struct mlx4_en_dev *mdev)
1052 {
1053         struct netdev_hw_addr *ha;
1054         struct mlx4_mac_entry *entry;
1055         struct hlist_node *tmp;
1056         bool found;
1057         u64 mac;
1058         int err = 0;
1059         struct hlist_head *bucket;
1060         unsigned int i;
1061         int removed = 0;
1062         u32 prev_flags;
1063
1064         /* Note that we do not need to protect our mac_hash traversal with rcu,
1065          * since all modification code is protected by mdev->state_lock
1066          */
1067
1068         /* find what to remove */
1069         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1070                 bucket = &priv->mac_hash[i];
1071                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1072                         found = false;
1073                         netdev_for_each_uc_addr(ha, dev) {
1074                                 if (ether_addr_equal_64bits(entry->mac,
1075                                                             ha->addr)) {
1076                                         found = true;
1077                                         break;
1078                                 }
1079                         }
1080
1081                         /* MAC address of the port is not in uc list */
1082                         if (ether_addr_equal_64bits(entry->mac,
1083                                                     priv->current_mac))
1084                                 found = true;
1085
1086                         if (!found) {
1087                                 mac = mlx4_mac_to_u64(entry->mac);
1088                                 mlx4_en_uc_steer_release(priv, entry->mac,
1089                                                          priv->base_qpn,
1090                                                          entry->reg_id);
1091                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1092
1093                                 hlist_del_rcu(&entry->hlist);
1094                                 kfree_rcu(entry, rcu);
1095                                 en_dbg(DRV, priv, "Removed MAC %pM on port:%d\n",
1096                                        entry->mac, priv->port);
1097                                 ++removed;
1098                         }
1099                 }
1100         }
1101
1102         /* if we didn't remove anything, there is no use in trying to add
1103          * again once we are in a forced promisc mode state
1104          */
1105         if ((priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) && 0 == removed)
1106                 return;
1107
1108         prev_flags = priv->flags;
1109         priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC;
1110
1111         /* find what to add */
1112         netdev_for_each_uc_addr(ha, dev) {
1113                 found = false;
1114                 bucket = &priv->mac_hash[ha->addr[MLX4_EN_MAC_HASH_IDX]];
1115                 hlist_for_each_entry(entry, bucket, hlist) {
1116                         if (ether_addr_equal_64bits(entry->mac, ha->addr)) {
1117                                 found = true;
1118                                 break;
1119                         }
1120                 }
1121
1122                 if (!found) {
1123                         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1124                         if (!entry) {
1125                                 en_err(priv, "Failed adding MAC %pM on port:%d (out of memory)\n",
1126                                        ha->addr, priv->port);
1127                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1128                                 break;
1129                         }
1130                         mac = mlx4_mac_to_u64(ha->addr);
1131                         memcpy(entry->mac, ha->addr, ETH_ALEN);
1132                         err = mlx4_register_mac(mdev->dev, priv->port, mac);
1133                         if (err < 0) {
1134                                 en_err(priv, "Failed registering MAC %pM on port %d: %d\n",
1135                                        ha->addr, priv->port, err);
1136                                 kfree(entry);
1137                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1138                                 break;
1139                         }
1140                         err = mlx4_en_uc_steer_add(priv, ha->addr,
1141                                                    &priv->base_qpn,
1142                                                    &entry->reg_id);
1143                         if (err) {
1144                                 en_err(priv, "Failed adding MAC %pM on port %d: %d\n",
1145                                        ha->addr, priv->port, err);
1146                                 mlx4_unregister_mac(mdev->dev, priv->port, mac);
1147                                 kfree(entry);
1148                                 priv->flags |= MLX4_EN_FLAG_FORCE_PROMISC;
1149                                 break;
1150                         } else {
1151                                 unsigned int mac_hash;
1152                                 en_dbg(DRV, priv, "Added MAC %pM on port:%d\n",
1153                                        ha->addr, priv->port);
1154                                 mac_hash = ha->addr[MLX4_EN_MAC_HASH_IDX];
1155                                 bucket = &priv->mac_hash[mac_hash];
1156                                 hlist_add_head_rcu(&entry->hlist, bucket);
1157                         }
1158                 }
1159         }
1160
1161         if (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1162                 en_warn(priv, "Forcing promiscuous mode on port:%d\n",
1163                         priv->port);
1164         } else if (prev_flags & MLX4_EN_FLAG_FORCE_PROMISC) {
1165                 en_warn(priv, "Stop forcing promiscuous mode on port:%d\n",
1166                         priv->port);
1167         }
1168 }
1169
1170 static void mlx4_en_do_set_rx_mode(struct work_struct *work)
1171 {
1172         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1173                                                  rx_mode_task);
1174         struct mlx4_en_dev *mdev = priv->mdev;
1175         struct net_device *dev = priv->dev;
1176
1177         mutex_lock(&mdev->state_lock);
1178         if (!mdev->device_up) {
1179                 en_dbg(HW, priv, "Card is not up, ignoring rx mode change.\n");
1180                 goto out;
1181         }
1182         if (!priv->port_up) {
1183                 en_dbg(HW, priv, "Port is down, ignoring rx mode change.\n");
1184                 goto out;
1185         }
1186
1187         if (!netif_carrier_ok(dev)) {
1188                 if (!mlx4_en_QUERY_PORT(mdev, priv->port)) {
1189                         if (priv->port_state.link_state) {
1190                                 priv->last_link_state = MLX4_DEV_EVENT_PORT_UP;
1191                                 netif_carrier_on(dev);
1192                                 en_dbg(LINK, priv, "Link Up\n");
1193                         }
1194                 }
1195         }
1196
1197         if (dev->priv_flags & IFF_UNICAST_FLT)
1198                 mlx4_en_do_uc_filter(priv, dev, mdev);
1199
1200         /* Promsicuous mode: disable all filters */
1201         if ((dev->flags & IFF_PROMISC) ||
1202             (priv->flags & MLX4_EN_FLAG_FORCE_PROMISC)) {
1203                 mlx4_en_set_promisc_mode(priv, mdev);
1204                 goto out;
1205         }
1206
1207         /* Not in promiscuous mode */
1208         if (priv->flags & MLX4_EN_FLAG_PROMISC)
1209                 mlx4_en_clear_promisc_mode(priv, mdev);
1210
1211         mlx4_en_do_multicast(priv, dev, mdev);
1212 out:
1213         mutex_unlock(&mdev->state_lock);
1214 }
1215
1216 #ifdef CONFIG_NET_POLL_CONTROLLER
1217 static void mlx4_en_netpoll(struct net_device *dev)
1218 {
1219         struct mlx4_en_priv *priv = netdev_priv(dev);
1220         struct mlx4_en_cq *cq;
1221         int i;
1222
1223         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1224                 cq = priv->tx_cq[TX][i];
1225                 napi_schedule(&cq->napi);
1226         }
1227 }
1228 #endif
1229
1230 static int mlx4_en_set_rss_steer_rules(struct mlx4_en_priv *priv)
1231 {
1232         u64 reg_id;
1233         int err = 0;
1234         int *qpn = &priv->base_qpn;
1235         struct mlx4_mac_entry *entry;
1236
1237         err = mlx4_en_uc_steer_add(priv, priv->dev->dev_addr, qpn, &reg_id);
1238         if (err)
1239                 return err;
1240
1241         err = mlx4_en_tunnel_steer_add(priv, priv->dev->dev_addr, *qpn,
1242                                        &priv->tunnel_reg_id);
1243         if (err)
1244                 goto tunnel_err;
1245
1246         entry = kmalloc(sizeof(*entry), GFP_KERNEL);
1247         if (!entry) {
1248                 err = -ENOMEM;
1249                 goto alloc_err;
1250         }
1251
1252         memcpy(entry->mac, priv->dev->dev_addr, sizeof(entry->mac));
1253         memcpy(priv->current_mac, entry->mac, sizeof(priv->current_mac));
1254         entry->reg_id = reg_id;
1255         hlist_add_head_rcu(&entry->hlist,
1256                            &priv->mac_hash[entry->mac[MLX4_EN_MAC_HASH_IDX]]);
1257
1258         return 0;
1259
1260 alloc_err:
1261         if (priv->tunnel_reg_id)
1262                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1263
1264 tunnel_err:
1265         mlx4_en_uc_steer_release(priv, priv->dev->dev_addr, *qpn, reg_id);
1266         return err;
1267 }
1268
1269 static void mlx4_en_delete_rss_steer_rules(struct mlx4_en_priv *priv)
1270 {
1271         u64 mac;
1272         unsigned int i;
1273         int qpn = priv->base_qpn;
1274         struct hlist_head *bucket;
1275         struct hlist_node *tmp;
1276         struct mlx4_mac_entry *entry;
1277
1278         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) {
1279                 bucket = &priv->mac_hash[i];
1280                 hlist_for_each_entry_safe(entry, tmp, bucket, hlist) {
1281                         mac = mlx4_mac_to_u64(entry->mac);
1282                         en_dbg(DRV, priv, "Registering MAC:%pM for deleting\n",
1283                                entry->mac);
1284                         mlx4_en_uc_steer_release(priv, entry->mac,
1285                                                  qpn, entry->reg_id);
1286
1287                         mlx4_unregister_mac(priv->mdev->dev, priv->port, mac);
1288                         hlist_del_rcu(&entry->hlist);
1289                         kfree_rcu(entry, rcu);
1290                 }
1291         }
1292
1293         if (priv->tunnel_reg_id) {
1294                 mlx4_flow_detach(priv->mdev->dev, priv->tunnel_reg_id);
1295                 priv->tunnel_reg_id = 0;
1296         }
1297 }
1298
1299 static void mlx4_en_tx_timeout(struct net_device *dev)
1300 {
1301         struct mlx4_en_priv *priv = netdev_priv(dev);
1302         struct mlx4_en_dev *mdev = priv->mdev;
1303         int i;
1304
1305         if (netif_msg_timer(priv))
1306                 en_warn(priv, "Tx timeout called on port:%d\n", priv->port);
1307
1308         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1309                 struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][i];
1310
1311                 if (!netif_tx_queue_stopped(netdev_get_tx_queue(dev, i)))
1312                         continue;
1313                 en_warn(priv, "TX timeout on queue: %d, QP: 0x%x, CQ: 0x%x, Cons: 0x%x, Prod: 0x%x\n",
1314                         i, tx_ring->qpn, tx_ring->sp_cqn,
1315                         tx_ring->cons, tx_ring->prod);
1316         }
1317
1318         priv->port_stats.tx_timeout++;
1319         en_dbg(DRV, priv, "Scheduling watchdog\n");
1320         queue_work(mdev->workqueue, &priv->watchdog_task);
1321 }
1322
1323
1324 static struct rtnl_link_stats64 *
1325 mlx4_en_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
1326 {
1327         struct mlx4_en_priv *priv = netdev_priv(dev);
1328
1329         spin_lock_bh(&priv->stats_lock);
1330         mlx4_en_fold_software_stats(dev);
1331         netdev_stats_to_stats64(stats, &dev->stats);
1332         spin_unlock_bh(&priv->stats_lock);
1333
1334         return stats;
1335 }
1336
1337 static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
1338 {
1339         struct mlx4_en_cq *cq;
1340         int i, t;
1341
1342         /* If we haven't received a specific coalescing setting
1343          * (module param), we set the moderation parameters as follows:
1344          * - moder_cnt is set to the number of mtu sized packets to
1345          *   satisfy our coalescing target.
1346          * - moder_time is set to a fixed value.
1347          */
1348         priv->rx_frames = MLX4_EN_RX_COAL_TARGET;
1349         priv->rx_usecs = MLX4_EN_RX_COAL_TIME;
1350         priv->tx_frames = MLX4_EN_TX_COAL_PKTS;
1351         priv->tx_usecs = MLX4_EN_TX_COAL_TIME;
1352         en_dbg(INTR, priv, "Default coalesing params for mtu:%d - rx_frames:%d rx_usecs:%d\n",
1353                priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
1354
1355         /* Setup cq moderation params */
1356         for (i = 0; i < priv->rx_ring_num; i++) {
1357                 cq = priv->rx_cq[i];
1358                 cq->moder_cnt = priv->rx_frames;
1359                 cq->moder_time = priv->rx_usecs;
1360                 priv->last_moder_time[i] = MLX4_EN_AUTO_CONF;
1361                 priv->last_moder_packets[i] = 0;
1362                 priv->last_moder_bytes[i] = 0;
1363         }
1364
1365         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1366                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1367                         cq = priv->tx_cq[t][i];
1368                         cq->moder_cnt = priv->tx_frames;
1369                         cq->moder_time = priv->tx_usecs;
1370                 }
1371         }
1372
1373         /* Reset auto-moderation params */
1374         priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
1375         priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
1376         priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
1377         priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
1378         priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
1379         priv->adaptive_rx_coal = 1;
1380         priv->last_moder_jiffies = 0;
1381         priv->last_moder_tx_packets = 0;
1382 }
1383
1384 static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
1385 {
1386         unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
1387         struct mlx4_en_cq *cq;
1388         unsigned long packets;
1389         unsigned long rate;
1390         unsigned long avg_pkt_size;
1391         unsigned long rx_packets;
1392         unsigned long rx_bytes;
1393         unsigned long rx_pkt_diff;
1394         int moder_time;
1395         int ring, err;
1396
1397         if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
1398                 return;
1399
1400         for (ring = 0; ring < priv->rx_ring_num; ring++) {
1401                 rx_packets = READ_ONCE(priv->rx_ring[ring]->packets);
1402                 rx_bytes = READ_ONCE(priv->rx_ring[ring]->bytes);
1403
1404                 rx_pkt_diff = ((unsigned long) (rx_packets -
1405                                 priv->last_moder_packets[ring]));
1406                 packets = rx_pkt_diff;
1407                 rate = packets * HZ / period;
1408                 avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
1409                                 priv->last_moder_bytes[ring])) / packets : 0;
1410
1411                 /* Apply auto-moderation only when packet rate
1412                  * exceeds a rate that it matters */
1413                 if (rate > (MLX4_EN_RX_RATE_THRESH / priv->rx_ring_num) &&
1414                     avg_pkt_size > MLX4_EN_AVG_PKT_SMALL) {
1415                         if (rate < priv->pkt_rate_low)
1416                                 moder_time = priv->rx_usecs_low;
1417                         else if (rate > priv->pkt_rate_high)
1418                                 moder_time = priv->rx_usecs_high;
1419                         else
1420                                 moder_time = (rate - priv->pkt_rate_low) *
1421                                         (priv->rx_usecs_high - priv->rx_usecs_low) /
1422                                         (priv->pkt_rate_high - priv->pkt_rate_low) +
1423                                         priv->rx_usecs_low;
1424                 } else {
1425                         moder_time = priv->rx_usecs_low;
1426                 }
1427
1428                 if (moder_time != priv->last_moder_time[ring]) {
1429                         priv->last_moder_time[ring] = moder_time;
1430                         cq = priv->rx_cq[ring];
1431                         cq->moder_time = moder_time;
1432                         cq->moder_cnt = priv->rx_frames;
1433                         err = mlx4_en_set_cq_moder(priv, cq);
1434                         if (err)
1435                                 en_err(priv, "Failed modifying moderation for cq:%d\n",
1436                                        ring);
1437                 }
1438                 priv->last_moder_packets[ring] = rx_packets;
1439                 priv->last_moder_bytes[ring] = rx_bytes;
1440         }
1441
1442         priv->last_moder_jiffies = jiffies;
1443 }
1444
1445 static void mlx4_en_do_get_stats(struct work_struct *work)
1446 {
1447         struct delayed_work *delay = to_delayed_work(work);
1448         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1449                                                  stats_task);
1450         struct mlx4_en_dev *mdev = priv->mdev;
1451         int err;
1452
1453         mutex_lock(&mdev->state_lock);
1454         if (mdev->device_up) {
1455                 if (priv->port_up) {
1456                         err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
1457                         if (err)
1458                                 en_dbg(HW, priv, "Could not update stats\n");
1459
1460                         mlx4_en_auto_moderation(priv);
1461                 }
1462
1463                 queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
1464         }
1465         if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) {
1466                 mlx4_en_do_set_mac(priv, priv->current_mac);
1467                 mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0;
1468         }
1469         mutex_unlock(&mdev->state_lock);
1470 }
1471
1472 /* mlx4_en_service_task - Run service task for tasks that needed to be done
1473  * periodically
1474  */
1475 static void mlx4_en_service_task(struct work_struct *work)
1476 {
1477         struct delayed_work *delay = to_delayed_work(work);
1478         struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
1479                                                  service_task);
1480         struct mlx4_en_dev *mdev = priv->mdev;
1481
1482         mutex_lock(&mdev->state_lock);
1483         if (mdev->device_up) {
1484                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
1485                         mlx4_en_ptp_overflow_check(mdev);
1486
1487                 mlx4_en_recover_from_oom(priv);
1488                 queue_delayed_work(mdev->workqueue, &priv->service_task,
1489                                    SERVICE_TASK_DELAY);
1490         }
1491         mutex_unlock(&mdev->state_lock);
1492 }
1493
1494 static void mlx4_en_linkstate(struct work_struct *work)
1495 {
1496         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1497                                                  linkstate_task);
1498         struct mlx4_en_dev *mdev = priv->mdev;
1499         int linkstate = priv->link_state;
1500
1501         mutex_lock(&mdev->state_lock);
1502         /* If observable port state changed set carrier state and
1503          * report to system log */
1504         if (priv->last_link_state != linkstate) {
1505                 if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
1506                         en_info(priv, "Link Down\n");
1507                         netif_carrier_off(priv->dev);
1508                 } else {
1509                         en_info(priv, "Link Up\n");
1510                         netif_carrier_on(priv->dev);
1511                 }
1512         }
1513         priv->last_link_state = linkstate;
1514         mutex_unlock(&mdev->state_lock);
1515 }
1516
1517 static int mlx4_en_init_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1518 {
1519         struct mlx4_en_rx_ring *ring = priv->rx_ring[ring_idx];
1520         int numa_node = priv->mdev->dev->numa_node;
1521
1522         if (!zalloc_cpumask_var(&ring->affinity_mask, GFP_KERNEL))
1523                 return -ENOMEM;
1524
1525         cpumask_set_cpu(cpumask_local_spread(ring_idx, numa_node),
1526                         ring->affinity_mask);
1527         return 0;
1528 }
1529
1530 static void mlx4_en_free_affinity_hint(struct mlx4_en_priv *priv, int ring_idx)
1531 {
1532         free_cpumask_var(priv->rx_ring[ring_idx]->affinity_mask);
1533 }
1534
1535 static void mlx4_en_init_recycle_ring(struct mlx4_en_priv *priv,
1536                                       int tx_ring_idx)
1537 {
1538         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX_XDP][tx_ring_idx];
1539         int rr_index = tx_ring_idx;
1540
1541         tx_ring->free_tx_desc = mlx4_en_recycle_tx_desc;
1542         tx_ring->recycle_ring = priv->rx_ring[rr_index];
1543         en_dbg(DRV, priv, "Set tx_ring[%d][%d]->recycle_ring = rx_ring[%d]\n",
1544                TX_XDP, tx_ring_idx, rr_index);
1545 }
1546
1547 int mlx4_en_start_port(struct net_device *dev)
1548 {
1549         struct mlx4_en_priv *priv = netdev_priv(dev);
1550         struct mlx4_en_dev *mdev = priv->mdev;
1551         struct mlx4_en_cq *cq;
1552         struct mlx4_en_tx_ring *tx_ring;
1553         int rx_index = 0;
1554         int err = 0;
1555         int i, t;
1556         int j;
1557         u8 mc_list[16] = {0};
1558
1559         if (priv->port_up) {
1560                 en_dbg(DRV, priv, "start port called while port already up\n");
1561                 return 0;
1562         }
1563
1564         INIT_LIST_HEAD(&priv->mc_list);
1565         INIT_LIST_HEAD(&priv->curr_list);
1566         INIT_LIST_HEAD(&priv->ethtool_list);
1567         memset(&priv->ethtool_rules[0], 0,
1568                sizeof(struct ethtool_flow_id) * MAX_NUM_OF_FS_RULES);
1569
1570         /* Calculate Rx buf size */
1571         dev->mtu = min(dev->mtu, priv->max_mtu);
1572         mlx4_en_calc_rx_buf(dev);
1573         en_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
1574
1575         /* Configure rx cq's and rings */
1576         err = mlx4_en_activate_rx_rings(priv);
1577         if (err) {
1578                 en_err(priv, "Failed to activate RX rings\n");
1579                 return err;
1580         }
1581         for (i = 0; i < priv->rx_ring_num; i++) {
1582                 cq = priv->rx_cq[i];
1583
1584                 err = mlx4_en_init_affinity_hint(priv, i);
1585                 if (err) {
1586                         en_err(priv, "Failed preparing IRQ affinity hint\n");
1587                         goto cq_err;
1588                 }
1589
1590                 err = mlx4_en_activate_cq(priv, cq, i);
1591                 if (err) {
1592                         en_err(priv, "Failed activating Rx CQ\n");
1593                         mlx4_en_free_affinity_hint(priv, i);
1594                         goto cq_err;
1595                 }
1596
1597                 for (j = 0; j < cq->size; j++) {
1598                         struct mlx4_cqe *cqe = NULL;
1599
1600                         cqe = mlx4_en_get_cqe(cq->buf, j, priv->cqe_size) +
1601                               priv->cqe_factor;
1602                         cqe->owner_sr_opcode = MLX4_CQE_OWNER_MASK;
1603                 }
1604
1605                 err = mlx4_en_set_cq_moder(priv, cq);
1606                 if (err) {
1607                         en_err(priv, "Failed setting cq moderation parameters\n");
1608                         mlx4_en_deactivate_cq(priv, cq);
1609                         mlx4_en_free_affinity_hint(priv, i);
1610                         goto cq_err;
1611                 }
1612                 mlx4_en_arm_cq(priv, cq);
1613                 priv->rx_ring[i]->cqn = cq->mcq.cqn;
1614                 ++rx_index;
1615         }
1616
1617         /* Set qp number */
1618         en_dbg(DRV, priv, "Getting qp number for port %d\n", priv->port);
1619         err = mlx4_en_get_qp(priv);
1620         if (err) {
1621                 en_err(priv, "Failed getting eth qp\n");
1622                 goto cq_err;
1623         }
1624         mdev->mac_removed[priv->port] = 0;
1625
1626         priv->counter_index =
1627                         mlx4_get_default_counter_index(mdev->dev, priv->port);
1628
1629         err = mlx4_en_config_rss_steer(priv);
1630         if (err) {
1631                 en_err(priv, "Failed configuring rss steering\n");
1632                 goto mac_err;
1633         }
1634
1635         err = mlx4_en_create_drop_qp(priv);
1636         if (err)
1637                 goto rss_err;
1638
1639         /* Configure tx cq's and rings */
1640         for (t = 0 ; t < MLX4_EN_NUM_TX_TYPES; t++) {
1641                 u8 num_tx_rings_p_up = t == TX ?
1642                         priv->num_tx_rings_p_up : priv->tx_ring_num[t];
1643
1644                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1645                         /* Configure cq */
1646                         cq = priv->tx_cq[t][i];
1647                         err = mlx4_en_activate_cq(priv, cq, i);
1648                         if (err) {
1649                                 en_err(priv, "Failed allocating Tx CQ\n");
1650                                 goto tx_err;
1651                         }
1652                         err = mlx4_en_set_cq_moder(priv, cq);
1653                         if (err) {
1654                                 en_err(priv, "Failed setting cq moderation parameters\n");
1655                                 mlx4_en_deactivate_cq(priv, cq);
1656                                 goto tx_err;
1657                         }
1658                         en_dbg(DRV, priv,
1659                                "Resetting index of collapsed CQ:%d to -1\n", i);
1660                         cq->buf->wqe_index = cpu_to_be16(0xffff);
1661
1662                         /* Configure ring */
1663                         tx_ring = priv->tx_ring[t][i];
1664                         err = mlx4_en_activate_tx_ring(priv, tx_ring,
1665                                                        cq->mcq.cqn,
1666                                                        i / num_tx_rings_p_up);
1667                         if (err) {
1668                                 en_err(priv, "Failed allocating Tx ring\n");
1669                                 mlx4_en_deactivate_cq(priv, cq);
1670                                 goto tx_err;
1671                         }
1672                         if (t != TX_XDP) {
1673                                 tx_ring->tx_queue = netdev_get_tx_queue(dev, i);
1674                                 tx_ring->recycle_ring = NULL;
1675                         } else {
1676                                 mlx4_en_init_recycle_ring(priv, i);
1677                         }
1678
1679                         /* Arm CQ for TX completions */
1680                         mlx4_en_arm_cq(priv, cq);
1681
1682                         /* Set initial ownership of all Tx TXBBs to SW (1) */
1683                         for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
1684                                 *((u32 *)(tx_ring->buf + j)) = 0xffffffff;
1685                 }
1686         }
1687
1688         /* Configure port */
1689         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
1690                                     priv->rx_skb_size + ETH_FCS_LEN,
1691                                     priv->prof->tx_pause,
1692                                     priv->prof->tx_ppp,
1693                                     priv->prof->rx_pause,
1694                                     priv->prof->rx_ppp);
1695         if (err) {
1696                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
1697                        priv->port, err);
1698                 goto tx_err;
1699         }
1700         /* Set default qp number */
1701         err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
1702         if (err) {
1703                 en_err(priv, "Failed setting default qp numbers\n");
1704                 goto tx_err;
1705         }
1706
1707         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
1708                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
1709                 if (err) {
1710                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
1711                                err);
1712                         goto tx_err;
1713                 }
1714         }
1715
1716         /* Init port */
1717         en_dbg(HW, priv, "Initializing port\n");
1718         err = mlx4_INIT_PORT(mdev->dev, priv->port);
1719         if (err) {
1720                 en_err(priv, "Failed Initializing port\n");
1721                 goto tx_err;
1722         }
1723
1724         /* Set Unicast and VXLAN steering rules */
1725         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0 &&
1726             mlx4_en_set_rss_steer_rules(priv))
1727                 mlx4_warn(mdev, "Failed setting steering rules\n");
1728
1729         /* Attach rx QP to bradcast address */
1730         eth_broadcast_addr(&mc_list[10]);
1731         mc_list[5] = priv->port; /* needed for B0 steering support */
1732         if (mlx4_multicast_attach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1733                                   priv->port, 0, MLX4_PROT_ETH,
1734                                   &priv->broadcast_id))
1735                 mlx4_warn(mdev, "Failed Attaching Broadcast\n");
1736
1737         /* Must redo promiscuous mode setup. */
1738         priv->flags &= ~(MLX4_EN_FLAG_PROMISC | MLX4_EN_FLAG_MC_PROMISC);
1739
1740         /* Schedule multicast task to populate multicast list */
1741         queue_work(mdev->workqueue, &priv->rx_mode_task);
1742
1743         if (priv->mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
1744                 udp_tunnel_get_rx_info(dev);
1745
1746         priv->port_up = true;
1747
1748         /* Process all completions if exist to prevent
1749          * the queues freezing if they are full
1750          */
1751         for (i = 0; i < priv->rx_ring_num; i++)
1752                 napi_schedule(&priv->rx_cq[i]->napi);
1753
1754         netif_tx_start_all_queues(dev);
1755         netif_device_attach(dev);
1756
1757         return 0;
1758
1759 tx_err:
1760         if (t == MLX4_EN_NUM_TX_TYPES) {
1761                 t--;
1762                 i = priv->tx_ring_num[t];
1763         }
1764         while (t >= 0) {
1765                 while (i--) {
1766                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1767                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1768                 }
1769                 if (!t--)
1770                         break;
1771                 i = priv->tx_ring_num[t];
1772         }
1773         mlx4_en_destroy_drop_qp(priv);
1774 rss_err:
1775         mlx4_en_release_rss_steer(priv);
1776 mac_err:
1777         mlx4_en_put_qp(priv);
1778 cq_err:
1779         while (rx_index--) {
1780                 mlx4_en_deactivate_cq(priv, priv->rx_cq[rx_index]);
1781                 mlx4_en_free_affinity_hint(priv, rx_index);
1782         }
1783         for (i = 0; i < priv->rx_ring_num; i++)
1784                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1785
1786         return err; /* need to close devices */
1787 }
1788
1789
1790 void mlx4_en_stop_port(struct net_device *dev, int detach)
1791 {
1792         struct mlx4_en_priv *priv = netdev_priv(dev);
1793         struct mlx4_en_dev *mdev = priv->mdev;
1794         struct mlx4_en_mc_list *mclist, *tmp;
1795         struct ethtool_flow_id *flow, *tmp_flow;
1796         int i, t;
1797         u8 mc_list[16] = {0};
1798
1799         if (!priv->port_up) {
1800                 en_dbg(DRV, priv, "stop port called while port already down\n");
1801                 return;
1802         }
1803
1804         /* close port*/
1805         mlx4_CLOSE_PORT(mdev->dev, priv->port);
1806
1807         /* Synchronize with tx routine */
1808         netif_tx_lock_bh(dev);
1809         if (detach)
1810                 netif_device_detach(dev);
1811         netif_tx_stop_all_queues(dev);
1812         netif_tx_unlock_bh(dev);
1813
1814         netif_tx_disable(dev);
1815
1816         spin_lock_bh(&priv->stats_lock);
1817         mlx4_en_fold_software_stats(dev);
1818         /* Set port as not active */
1819         priv->port_up = false;
1820         spin_unlock_bh(&priv->stats_lock);
1821
1822         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
1823
1824         /* Promsicuous mode */
1825         if (mdev->dev->caps.steering_mode ==
1826             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1827                 priv->flags &= ~(MLX4_EN_FLAG_PROMISC |
1828                                  MLX4_EN_FLAG_MC_PROMISC);
1829                 mlx4_flow_steer_promisc_remove(mdev->dev,
1830                                                priv->port,
1831                                                MLX4_FS_ALL_DEFAULT);
1832                 mlx4_flow_steer_promisc_remove(mdev->dev,
1833                                                priv->port,
1834                                                MLX4_FS_MC_DEFAULT);
1835         } else if (priv->flags & MLX4_EN_FLAG_PROMISC) {
1836                 priv->flags &= ~MLX4_EN_FLAG_PROMISC;
1837
1838                 /* Disable promiscouos mode */
1839                 mlx4_unicast_promisc_remove(mdev->dev, priv->base_qpn,
1840                                             priv->port);
1841
1842                 /* Disable Multicast promisc */
1843                 if (priv->flags & MLX4_EN_FLAG_MC_PROMISC) {
1844                         mlx4_multicast_promisc_remove(mdev->dev, priv->base_qpn,
1845                                                       priv->port);
1846                         priv->flags &= ~MLX4_EN_FLAG_MC_PROMISC;
1847                 }
1848         }
1849
1850         /* Detach All multicasts */
1851         eth_broadcast_addr(&mc_list[10]);
1852         mc_list[5] = priv->port; /* needed for B0 steering support */
1853         mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp, mc_list,
1854                               MLX4_PROT_ETH, priv->broadcast_id);
1855         list_for_each_entry(mclist, &priv->curr_list, list) {
1856                 memcpy(&mc_list[10], mclist->addr, ETH_ALEN);
1857                 mc_list[5] = priv->port;
1858                 mlx4_multicast_detach(mdev->dev, &priv->rss_map.indir_qp,
1859                                       mc_list, MLX4_PROT_ETH, mclist->reg_id);
1860                 if (mclist->tunnel_reg_id)
1861                         mlx4_flow_detach(mdev->dev, mclist->tunnel_reg_id);
1862         }
1863         mlx4_en_clear_list(dev);
1864         list_for_each_entry_safe(mclist, tmp, &priv->curr_list, list) {
1865                 list_del(&mclist->list);
1866                 kfree(mclist);
1867         }
1868
1869         /* Flush multicast filter */
1870         mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG);
1871
1872         /* Remove flow steering rules for the port*/
1873         if (mdev->dev->caps.steering_mode ==
1874             MLX4_STEERING_MODE_DEVICE_MANAGED) {
1875                 ASSERT_RTNL();
1876                 list_for_each_entry_safe(flow, tmp_flow,
1877                                          &priv->ethtool_list, list) {
1878                         mlx4_flow_detach(mdev->dev, flow->id);
1879                         list_del(&flow->list);
1880                 }
1881         }
1882
1883         mlx4_en_destroy_drop_qp(priv);
1884
1885         /* Free TX Rings */
1886         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
1887                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
1888                         mlx4_en_deactivate_tx_ring(priv, priv->tx_ring[t][i]);
1889                         mlx4_en_deactivate_cq(priv, priv->tx_cq[t][i]);
1890                 }
1891         }
1892         msleep(10);
1893
1894         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++)
1895                 for (i = 0; i < priv->tx_ring_num[t]; i++)
1896                         mlx4_en_free_tx_buf(dev, priv->tx_ring[t][i]);
1897
1898         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
1899                 mlx4_en_delete_rss_steer_rules(priv);
1900
1901         /* Free RSS qps */
1902         mlx4_en_release_rss_steer(priv);
1903
1904         /* Unregister Mac address for the port */
1905         mlx4_en_put_qp(priv);
1906         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_REASSIGN_MAC_EN))
1907                 mdev->mac_removed[priv->port] = 1;
1908
1909         /* Free RX Rings */
1910         for (i = 0; i < priv->rx_ring_num; i++) {
1911                 struct mlx4_en_cq *cq = priv->rx_cq[i];
1912
1913                 napi_synchronize(&cq->napi);
1914                 mlx4_en_deactivate_rx_ring(priv, priv->rx_ring[i]);
1915                 mlx4_en_deactivate_cq(priv, cq);
1916
1917                 mlx4_en_free_affinity_hint(priv, i);
1918         }
1919 }
1920
1921 static void mlx4_en_restart(struct work_struct *work)
1922 {
1923         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
1924                                                  watchdog_task);
1925         struct mlx4_en_dev *mdev = priv->mdev;
1926         struct net_device *dev = priv->dev;
1927
1928         en_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
1929
1930         rtnl_lock();
1931         mutex_lock(&mdev->state_lock);
1932         if (priv->port_up) {
1933                 mlx4_en_stop_port(dev, 1);
1934                 if (mlx4_en_start_port(dev))
1935                         en_err(priv, "Failed restarting port %d\n", priv->port);
1936         }
1937         mutex_unlock(&mdev->state_lock);
1938         rtnl_unlock();
1939 }
1940
1941 static void mlx4_en_clear_stats(struct net_device *dev)
1942 {
1943         struct mlx4_en_priv *priv = netdev_priv(dev);
1944         struct mlx4_en_dev *mdev = priv->mdev;
1945         struct mlx4_en_tx_ring **tx_ring;
1946         int i;
1947
1948         if (!mlx4_is_slave(mdev->dev))
1949                 if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
1950                         en_dbg(HW, priv, "Failed dumping statistics\n");
1951
1952         memset(&priv->pstats, 0, sizeof(priv->pstats));
1953         memset(&priv->pkstats, 0, sizeof(priv->pkstats));
1954         memset(&priv->port_stats, 0, sizeof(priv->port_stats));
1955         memset(&priv->rx_flowstats, 0, sizeof(priv->rx_flowstats));
1956         memset(&priv->tx_flowstats, 0, sizeof(priv->tx_flowstats));
1957         memset(&priv->rx_priority_flowstats, 0,
1958                sizeof(priv->rx_priority_flowstats));
1959         memset(&priv->tx_priority_flowstats, 0,
1960                sizeof(priv->tx_priority_flowstats));
1961         memset(&priv->pf_stats, 0, sizeof(priv->pf_stats));
1962
1963         tx_ring = priv->tx_ring[TX];
1964         for (i = 0; i < priv->tx_ring_num[TX]; i++) {
1965                 tx_ring[i]->bytes = 0;
1966                 tx_ring[i]->packets = 0;
1967                 tx_ring[i]->tx_csum = 0;
1968                 tx_ring[i]->tx_dropped = 0;
1969                 tx_ring[i]->queue_stopped = 0;
1970                 tx_ring[i]->wake_queue = 0;
1971                 tx_ring[i]->tso_packets = 0;
1972                 tx_ring[i]->xmit_more = 0;
1973         }
1974         for (i = 0; i < priv->rx_ring_num; i++) {
1975                 priv->rx_ring[i]->bytes = 0;
1976                 priv->rx_ring[i]->packets = 0;
1977                 priv->rx_ring[i]->csum_ok = 0;
1978                 priv->rx_ring[i]->csum_none = 0;
1979                 priv->rx_ring[i]->csum_complete = 0;
1980         }
1981 }
1982
1983 static int mlx4_en_open(struct net_device *dev)
1984 {
1985         struct mlx4_en_priv *priv = netdev_priv(dev);
1986         struct mlx4_en_dev *mdev = priv->mdev;
1987         int err = 0;
1988
1989         mutex_lock(&mdev->state_lock);
1990
1991         if (!mdev->device_up) {
1992                 en_err(priv, "Cannot open - device down/disabled\n");
1993                 err = -EBUSY;
1994                 goto out;
1995         }
1996
1997         /* Reset HW statistics and SW counters */
1998         mlx4_en_clear_stats(dev);
1999
2000         err = mlx4_en_start_port(dev);
2001         if (err)
2002                 en_err(priv, "Failed starting port:%d\n", priv->port);
2003
2004 out:
2005         mutex_unlock(&mdev->state_lock);
2006         return err;
2007 }
2008
2009
2010 static int mlx4_en_close(struct net_device *dev)
2011 {
2012         struct mlx4_en_priv *priv = netdev_priv(dev);
2013         struct mlx4_en_dev *mdev = priv->mdev;
2014
2015         en_dbg(IFDOWN, priv, "Close port called\n");
2016
2017         mutex_lock(&mdev->state_lock);
2018
2019         mlx4_en_stop_port(dev, 0);
2020         netif_carrier_off(dev);
2021
2022         mutex_unlock(&mdev->state_lock);
2023         return 0;
2024 }
2025
2026 static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
2027 {
2028         int i, t;
2029
2030 #ifdef CONFIG_RFS_ACCEL
2031         priv->dev->rx_cpu_rmap = NULL;
2032 #endif
2033
2034         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2035                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2036                         if (priv->tx_ring[t] && priv->tx_ring[t][i])
2037                                 mlx4_en_destroy_tx_ring(priv,
2038                                                         &priv->tx_ring[t][i]);
2039                         if (priv->tx_cq[t] && priv->tx_cq[t][i])
2040                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2041                 }
2042         }
2043
2044         for (i = 0; i < priv->rx_ring_num; i++) {
2045                 if (priv->rx_ring[i])
2046                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2047                                 priv->prof->rx_ring_size, priv->stride);
2048                 if (priv->rx_cq[i])
2049                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2050         }
2051
2052 }
2053
2054 static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
2055 {
2056         struct mlx4_en_port_profile *prof = priv->prof;
2057         int i, t;
2058         int node;
2059
2060         /* Create tx Rings */
2061         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2062                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2063                         node = cpu_to_node(i % num_online_cpus());
2064                         if (mlx4_en_create_cq(priv, &priv->tx_cq[t][i],
2065                                               prof->tx_ring_size, i, t, node))
2066                                 goto err;
2067
2068                         if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[t][i],
2069                                                    prof->tx_ring_size,
2070                                                    TXBB_SIZE, node, i))
2071                                 goto err;
2072                 }
2073         }
2074
2075         /* Create rx Rings */
2076         for (i = 0; i < priv->rx_ring_num; i++) {
2077                 node = cpu_to_node(i % num_online_cpus());
2078                 if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
2079                                       prof->rx_ring_size, i, RX, node))
2080                         goto err;
2081
2082                 if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
2083                                            prof->rx_ring_size, priv->stride,
2084                                            node))
2085                         goto err;
2086         }
2087
2088 #ifdef CONFIG_RFS_ACCEL
2089         priv->dev->rx_cpu_rmap = mlx4_get_cpu_rmap(priv->mdev->dev, priv->port);
2090 #endif
2091
2092         return 0;
2093
2094 err:
2095         en_err(priv, "Failed to allocate NIC resources\n");
2096         for (i = 0; i < priv->rx_ring_num; i++) {
2097                 if (priv->rx_ring[i])
2098                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i],
2099                                                 prof->rx_ring_size,
2100                                                 priv->stride);
2101                 if (priv->rx_cq[i])
2102                         mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
2103         }
2104         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2105                 for (i = 0; i < priv->tx_ring_num[t]; i++) {
2106                         if (priv->tx_ring[t][i])
2107                                 mlx4_en_destroy_tx_ring(priv,
2108                                                         &priv->tx_ring[t][i]);
2109                         if (priv->tx_cq[t][i])
2110                                 mlx4_en_destroy_cq(priv, &priv->tx_cq[t][i]);
2111                 }
2112         }
2113         return -ENOMEM;
2114 }
2115
2116
2117 static int mlx4_en_copy_priv(struct mlx4_en_priv *dst,
2118                              struct mlx4_en_priv *src,
2119                              struct mlx4_en_port_profile *prof)
2120 {
2121         int t;
2122
2123         memcpy(&dst->hwtstamp_config, &prof->hwtstamp_config,
2124                sizeof(dst->hwtstamp_config));
2125         dst->num_tx_rings_p_up = src->mdev->profile.num_tx_rings_p_up;
2126         dst->rx_ring_num = prof->rx_ring_num;
2127         dst->flags = prof->flags;
2128         dst->mdev = src->mdev;
2129         dst->port = src->port;
2130         dst->dev = src->dev;
2131         dst->prof = prof;
2132         dst->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
2133                                          DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
2134
2135         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2136                 dst->tx_ring_num[t] = prof->tx_ring_num[t];
2137                 if (!dst->tx_ring_num[t])
2138                         continue;
2139
2140                 dst->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) *
2141                                           MAX_TX_RINGS, GFP_KERNEL);
2142                 if (!dst->tx_ring[t])
2143                         goto err_free_tx;
2144
2145                 dst->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
2146                                         MAX_TX_RINGS, GFP_KERNEL);
2147                 if (!dst->tx_cq[t]) {
2148                         kfree(dst->tx_ring[t]);
2149                         goto err_free_tx;
2150                 }
2151         }
2152
2153         return 0;
2154
2155 err_free_tx:
2156         while (t--) {
2157                 kfree(dst->tx_ring[t]);
2158                 kfree(dst->tx_cq[t]);
2159         }
2160         return -ENOMEM;
2161 }
2162
2163 static void mlx4_en_update_priv(struct mlx4_en_priv *dst,
2164                                 struct mlx4_en_priv *src)
2165 {
2166         int t;
2167         memcpy(dst->rx_ring, src->rx_ring,
2168                sizeof(struct mlx4_en_rx_ring *) * src->rx_ring_num);
2169         memcpy(dst->rx_cq, src->rx_cq,
2170                sizeof(struct mlx4_en_cq *) * src->rx_ring_num);
2171         memcpy(&dst->hwtstamp_config, &src->hwtstamp_config,
2172                sizeof(dst->hwtstamp_config));
2173         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2174                 dst->tx_ring_num[t] = src->tx_ring_num[t];
2175                 dst->tx_ring[t] = src->tx_ring[t];
2176                 dst->tx_cq[t] = src->tx_cq[t];
2177         }
2178         dst->rx_ring_num = src->rx_ring_num;
2179         memcpy(dst->prof, src->prof, sizeof(struct mlx4_en_port_profile));
2180 }
2181
2182 int mlx4_en_try_alloc_resources(struct mlx4_en_priv *priv,
2183                                 struct mlx4_en_priv *tmp,
2184                                 struct mlx4_en_port_profile *prof)
2185 {
2186         int t;
2187
2188         mlx4_en_copy_priv(tmp, priv, prof);
2189
2190         if (mlx4_en_alloc_resources(tmp)) {
2191                 en_warn(priv,
2192                         "%s: Resource allocation failed, using previous configuration\n",
2193                         __func__);
2194                 for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2195                         kfree(tmp->tx_ring[t]);
2196                         kfree(tmp->tx_cq[t]);
2197                 }
2198                 return -ENOMEM;
2199         }
2200         return 0;
2201 }
2202
2203 void mlx4_en_safe_replace_resources(struct mlx4_en_priv *priv,
2204                                     struct mlx4_en_priv *tmp)
2205 {
2206         mlx4_en_free_resources(priv);
2207         mlx4_en_update_priv(priv, tmp);
2208 }
2209
2210 void mlx4_en_destroy_netdev(struct net_device *dev)
2211 {
2212         struct mlx4_en_priv *priv = netdev_priv(dev);
2213         struct mlx4_en_dev *mdev = priv->mdev;
2214         int t;
2215
2216         en_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
2217
2218         /* Unregister device - this will close the port if it was up */
2219         if (priv->registered) {
2220                 devlink_port_type_clear(mlx4_get_devlink_port(mdev->dev,
2221                                                               priv->port));
2222                 unregister_netdev(dev);
2223         }
2224
2225         if (priv->allocated)
2226                 mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
2227
2228         cancel_delayed_work(&priv->stats_task);
2229         cancel_delayed_work(&priv->service_task);
2230         /* flush any pending task for this netdev */
2231         flush_workqueue(mdev->workqueue);
2232
2233         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
2234                 mlx4_en_remove_timestamp(mdev);
2235
2236         /* Detach the netdev so tasks would not attempt to access it */
2237         mutex_lock(&mdev->state_lock);
2238         mdev->pndev[priv->port] = NULL;
2239         mdev->upper[priv->port] = NULL;
2240
2241 #ifdef CONFIG_RFS_ACCEL
2242         mlx4_en_cleanup_filters(priv);
2243 #endif
2244
2245         mlx4_en_free_resources(priv);
2246         mutex_unlock(&mdev->state_lock);
2247
2248         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
2249                 kfree(priv->tx_ring[t]);
2250                 kfree(priv->tx_cq[t]);
2251         }
2252
2253         free_netdev(dev);
2254 }
2255
2256 static bool mlx4_en_check_xdp_mtu(struct net_device *dev, int mtu)
2257 {
2258         struct mlx4_en_priv *priv = netdev_priv(dev);
2259
2260         if (mtu > MLX4_EN_MAX_XDP_MTU) {
2261                 en_err(priv, "mtu:%d > max:%d when XDP prog is attached\n",
2262                        mtu, MLX4_EN_MAX_XDP_MTU);
2263                 return false;
2264         }
2265
2266         return true;
2267 }
2268
2269 static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
2270 {
2271         struct mlx4_en_priv *priv = netdev_priv(dev);
2272         struct mlx4_en_dev *mdev = priv->mdev;
2273         int err = 0;
2274
2275         en_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
2276                  dev->mtu, new_mtu);
2277
2278         if (priv->tx_ring_num[TX_XDP] &&
2279             !mlx4_en_check_xdp_mtu(dev, new_mtu))
2280                 return -EOPNOTSUPP;
2281
2282         dev->mtu = new_mtu;
2283
2284         if (netif_running(dev)) {
2285                 mutex_lock(&mdev->state_lock);
2286                 if (!mdev->device_up) {
2287                         /* NIC is probably restarting - let watchdog task reset
2288                          * the port */
2289                         en_dbg(DRV, priv, "Change MTU called with card down!?\n");
2290                 } else {
2291                         mlx4_en_stop_port(dev, 1);
2292                         err = mlx4_en_start_port(dev);
2293                         if (err) {
2294                                 en_err(priv, "Failed restarting port:%d\n",
2295                                          priv->port);
2296                                 queue_work(mdev->workqueue, &priv->watchdog_task);
2297                         }
2298                 }
2299                 mutex_unlock(&mdev->state_lock);
2300         }
2301         return 0;
2302 }
2303
2304 static int mlx4_en_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
2305 {
2306         struct mlx4_en_priv *priv = netdev_priv(dev);
2307         struct mlx4_en_dev *mdev = priv->mdev;
2308         struct hwtstamp_config config;
2309
2310         if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
2311                 return -EFAULT;
2312
2313         /* reserved for future extensions */
2314         if (config.flags)
2315                 return -EINVAL;
2316
2317         /* device doesn't support time stamping */
2318         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS))
2319                 return -EINVAL;
2320
2321         /* TX HW timestamp */
2322         switch (config.tx_type) {
2323         case HWTSTAMP_TX_OFF:
2324         case HWTSTAMP_TX_ON:
2325                 break;
2326         default:
2327                 return -ERANGE;
2328         }
2329
2330         /* RX HW timestamp */
2331         switch (config.rx_filter) {
2332         case HWTSTAMP_FILTER_NONE:
2333                 break;
2334         case HWTSTAMP_FILTER_ALL:
2335         case HWTSTAMP_FILTER_SOME:
2336         case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2337         case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2338         case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2339         case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2340         case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2341         case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2342         case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2343         case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2344         case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2345         case HWTSTAMP_FILTER_PTP_V2_EVENT:
2346         case HWTSTAMP_FILTER_PTP_V2_SYNC:
2347         case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2348                 config.rx_filter = HWTSTAMP_FILTER_ALL;
2349                 break;
2350         default:
2351                 return -ERANGE;
2352         }
2353
2354         if (mlx4_en_reset_config(dev, config, dev->features)) {
2355                 config.tx_type = HWTSTAMP_TX_OFF;
2356                 config.rx_filter = HWTSTAMP_FILTER_NONE;
2357         }
2358
2359         return copy_to_user(ifr->ifr_data, &config,
2360                             sizeof(config)) ? -EFAULT : 0;
2361 }
2362
2363 static int mlx4_en_hwtstamp_get(struct net_device *dev, struct ifreq *ifr)
2364 {
2365         struct mlx4_en_priv *priv = netdev_priv(dev);
2366
2367         return copy_to_user(ifr->ifr_data, &priv->hwtstamp_config,
2368                             sizeof(priv->hwtstamp_config)) ? -EFAULT : 0;
2369 }
2370
2371 static int mlx4_en_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
2372 {
2373         switch (cmd) {
2374         case SIOCSHWTSTAMP:
2375                 return mlx4_en_hwtstamp_set(dev, ifr);
2376         case SIOCGHWTSTAMP:
2377                 return mlx4_en_hwtstamp_get(dev, ifr);
2378         default:
2379                 return -EOPNOTSUPP;
2380         }
2381 }
2382
2383 static netdev_features_t mlx4_en_fix_features(struct net_device *netdev,
2384                                               netdev_features_t features)
2385 {
2386         struct mlx4_en_priv *en_priv = netdev_priv(netdev);
2387         struct mlx4_en_dev *mdev = en_priv->mdev;
2388
2389         /* Since there is no support for separate RX C-TAG/S-TAG vlan accel
2390          * enable/disable make sure S-TAG flag is always in same state as
2391          * C-TAG.
2392          */
2393         if (features & NETIF_F_HW_VLAN_CTAG_RX &&
2394             !(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
2395                 features |= NETIF_F_HW_VLAN_STAG_RX;
2396         else
2397                 features &= ~NETIF_F_HW_VLAN_STAG_RX;
2398
2399         return features;
2400 }
2401
2402 static int mlx4_en_set_features(struct net_device *netdev,
2403                 netdev_features_t features)
2404 {
2405         struct mlx4_en_priv *priv = netdev_priv(netdev);
2406         bool reset = false;
2407         int ret = 0;
2408
2409         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXFCS)) {
2410                 en_info(priv, "Turn %s RX-FCS\n",
2411                         (features & NETIF_F_RXFCS) ? "ON" : "OFF");
2412                 reset = true;
2413         }
2414
2415         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_RXALL)) {
2416                 u8 ignore_fcs_value = (features & NETIF_F_RXALL) ? 1 : 0;
2417
2418                 en_info(priv, "Turn %s RX-ALL\n",
2419                         ignore_fcs_value ? "ON" : "OFF");
2420                 ret = mlx4_SET_PORT_fcs_check(priv->mdev->dev,
2421                                               priv->port, ignore_fcs_value);
2422                 if (ret)
2423                         return ret;
2424         }
2425
2426         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
2427                 en_info(priv, "Turn %s RX vlan strip offload\n",
2428                         (features & NETIF_F_HW_VLAN_CTAG_RX) ? "ON" : "OFF");
2429                 reset = true;
2430         }
2431
2432         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_CTAG_TX))
2433                 en_info(priv, "Turn %s TX vlan strip offload\n",
2434                         (features & NETIF_F_HW_VLAN_CTAG_TX) ? "ON" : "OFF");
2435
2436         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_HW_VLAN_STAG_TX))
2437                 en_info(priv, "Turn %s TX S-VLAN strip offload\n",
2438                         (features & NETIF_F_HW_VLAN_STAG_TX) ? "ON" : "OFF");
2439
2440         if (DEV_FEATURE_CHANGED(netdev, features, NETIF_F_LOOPBACK)) {
2441                 en_info(priv, "Turn %s loopback\n",
2442                         (features & NETIF_F_LOOPBACK) ? "ON" : "OFF");
2443                 mlx4_en_update_loopback_state(netdev, features);
2444         }
2445
2446         if (reset) {
2447                 ret = mlx4_en_reset_config(netdev, priv->hwtstamp_config,
2448                                            features);
2449                 if (ret)
2450                         return ret;
2451         }
2452
2453         return 0;
2454 }
2455
2456 static int mlx4_en_set_vf_mac(struct net_device *dev, int queue, u8 *mac)
2457 {
2458         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2459         struct mlx4_en_dev *mdev = en_priv->mdev;
2460         u64 mac_u64 = mlx4_mac_to_u64(mac);
2461
2462         if (is_multicast_ether_addr(mac))
2463                 return -EINVAL;
2464
2465         return mlx4_set_vf_mac(mdev->dev, en_priv->port, queue, mac_u64);
2466 }
2467
2468 static int mlx4_en_set_vf_vlan(struct net_device *dev, int vf, u16 vlan, u8 qos,
2469                                __be16 vlan_proto)
2470 {
2471         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2472         struct mlx4_en_dev *mdev = en_priv->mdev;
2473
2474         return mlx4_set_vf_vlan(mdev->dev, en_priv->port, vf, vlan, qos,
2475                                 vlan_proto);
2476 }
2477
2478 static int mlx4_en_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
2479                                int max_tx_rate)
2480 {
2481         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2482         struct mlx4_en_dev *mdev = en_priv->mdev;
2483
2484         return mlx4_set_vf_rate(mdev->dev, en_priv->port, vf, min_tx_rate,
2485                                 max_tx_rate);
2486 }
2487
2488 static int mlx4_en_set_vf_spoofchk(struct net_device *dev, int vf, bool setting)
2489 {
2490         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2491         struct mlx4_en_dev *mdev = en_priv->mdev;
2492
2493         return mlx4_set_vf_spoofchk(mdev->dev, en_priv->port, vf, setting);
2494 }
2495
2496 static int mlx4_en_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivf)
2497 {
2498         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2499         struct mlx4_en_dev *mdev = en_priv->mdev;
2500
2501         return mlx4_get_vf_config(mdev->dev, en_priv->port, vf, ivf);
2502 }
2503
2504 static int mlx4_en_set_vf_link_state(struct net_device *dev, int vf, int link_state)
2505 {
2506         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2507         struct mlx4_en_dev *mdev = en_priv->mdev;
2508
2509         return mlx4_set_vf_link_state(mdev->dev, en_priv->port, vf, link_state);
2510 }
2511
2512 static int mlx4_en_get_vf_stats(struct net_device *dev, int vf,
2513                                 struct ifla_vf_stats *vf_stats)
2514 {
2515         struct mlx4_en_priv *en_priv = netdev_priv(dev);
2516         struct mlx4_en_dev *mdev = en_priv->mdev;
2517
2518         return mlx4_get_vf_stats(mdev->dev, en_priv->port, vf, vf_stats);
2519 }
2520
2521 #define PORT_ID_BYTE_LEN 8
2522 static int mlx4_en_get_phys_port_id(struct net_device *dev,
2523                                     struct netdev_phys_item_id *ppid)
2524 {
2525         struct mlx4_en_priv *priv = netdev_priv(dev);
2526         struct mlx4_dev *mdev = priv->mdev->dev;
2527         int i;
2528         u64 phys_port_id = mdev->caps.phys_port_id[priv->port];
2529
2530         if (!phys_port_id)
2531                 return -EOPNOTSUPP;
2532
2533         ppid->id_len = sizeof(phys_port_id);
2534         for (i = PORT_ID_BYTE_LEN - 1; i >= 0; --i) {
2535                 ppid->id[i] =  phys_port_id & 0xff;
2536                 phys_port_id >>= 8;
2537         }
2538         return 0;
2539 }
2540
2541 static void mlx4_en_add_vxlan_offloads(struct work_struct *work)
2542 {
2543         int ret;
2544         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2545                                                  vxlan_add_task);
2546
2547         ret = mlx4_config_vxlan_port(priv->mdev->dev, priv->vxlan_port);
2548         if (ret)
2549                 goto out;
2550
2551         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2552                                   VXLAN_STEER_BY_OUTER_MAC, 1);
2553 out:
2554         if (ret) {
2555                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2556                 return;
2557         }
2558
2559         /* set offloads */
2560         priv->dev->hw_enc_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2561                                       NETIF_F_RXCSUM |
2562                                       NETIF_F_TSO | NETIF_F_TSO6 |
2563                                       NETIF_F_GSO_UDP_TUNNEL |
2564                                       NETIF_F_GSO_UDP_TUNNEL_CSUM |
2565                                       NETIF_F_GSO_PARTIAL;
2566 }
2567
2568 static void mlx4_en_del_vxlan_offloads(struct work_struct *work)
2569 {
2570         int ret;
2571         struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
2572                                                  vxlan_del_task);
2573         /* unset offloads */
2574         priv->dev->hw_enc_features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
2575                                         NETIF_F_RXCSUM |
2576                                         NETIF_F_TSO | NETIF_F_TSO6 |
2577                                         NETIF_F_GSO_UDP_TUNNEL |
2578                                         NETIF_F_GSO_UDP_TUNNEL_CSUM |
2579                                         NETIF_F_GSO_PARTIAL);
2580
2581         ret = mlx4_SET_PORT_VXLAN(priv->mdev->dev, priv->port,
2582                                   VXLAN_STEER_BY_OUTER_MAC, 0);
2583         if (ret)
2584                 en_err(priv, "failed setting L2 tunnel configuration ret %d\n", ret);
2585
2586         priv->vxlan_port = 0;
2587 }
2588
2589 static void mlx4_en_add_vxlan_port(struct  net_device *dev,
2590                                    struct udp_tunnel_info *ti)
2591 {
2592         struct mlx4_en_priv *priv = netdev_priv(dev);
2593         __be16 port = ti->port;
2594         __be16 current_port;
2595
2596         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2597                 return;
2598
2599         if (ti->sa_family != AF_INET)
2600                 return;
2601
2602         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2603                 return;
2604
2605         current_port = priv->vxlan_port;
2606         if (current_port && current_port != port) {
2607                 en_warn(priv, "vxlan port %d configured, can't add port %d\n",
2608                         ntohs(current_port), ntohs(port));
2609                 return;
2610         }
2611
2612         priv->vxlan_port = port;
2613         queue_work(priv->mdev->workqueue, &priv->vxlan_add_task);
2614 }
2615
2616 static void mlx4_en_del_vxlan_port(struct  net_device *dev,
2617                                    struct udp_tunnel_info *ti)
2618 {
2619         struct mlx4_en_priv *priv = netdev_priv(dev);
2620         __be16 port = ti->port;
2621         __be16 current_port;
2622
2623         if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
2624                 return;
2625
2626         if (ti->sa_family != AF_INET)
2627                 return;
2628
2629         if (priv->mdev->dev->caps.tunnel_offload_mode != MLX4_TUNNEL_OFFLOAD_MODE_VXLAN)
2630                 return;
2631
2632         current_port = priv->vxlan_port;
2633         if (current_port != port) {
2634                 en_dbg(DRV, priv, "vxlan port %d isn't configured, ignoring\n", ntohs(port));
2635                 return;
2636         }
2637
2638         queue_work(priv->mdev->workqueue, &priv->vxlan_del_task);
2639 }
2640
2641 static netdev_features_t mlx4_en_features_check(struct sk_buff *skb,
2642                                                 struct net_device *dev,
2643                                                 netdev_features_t features)
2644 {
2645         features = vlan_features_check(skb, features);
2646         features = vxlan_features_check(skb, features);
2647
2648         /* The ConnectX-3 doesn't support outer IPv6 checksums but it does
2649          * support inner IPv6 checksums and segmentation so  we need to
2650          * strip that feature if this is an IPv6 encapsulated frame.
2651          */
2652         if (skb->encapsulation &&
2653             (skb->ip_summed == CHECKSUM_PARTIAL)) {
2654                 struct mlx4_en_priv *priv = netdev_priv(dev);
2655
2656                 if (!priv->vxlan_port ||
2657                     (ip_hdr(skb)->version != 4) ||
2658                     (udp_hdr(skb)->dest != priv->vxlan_port))
2659                         features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
2660         }
2661
2662         return features;
2663 }
2664
2665 static int mlx4_en_set_tx_maxrate(struct net_device *dev, int queue_index, u32 maxrate)
2666 {
2667         struct mlx4_en_priv *priv = netdev_priv(dev);
2668         struct mlx4_en_tx_ring *tx_ring = priv->tx_ring[TX][queue_index];
2669         struct mlx4_update_qp_params params;
2670         int err;
2671
2672         if (!(priv->mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_QP_RATE_LIMIT))
2673                 return -EOPNOTSUPP;
2674
2675         /* rate provided to us in Mbs, check if it fits into 12 bits, if not use Gbs */
2676         if (maxrate >> 12) {
2677                 params.rate_unit = MLX4_QP_RATE_LIMIT_GBS;
2678                 params.rate_val  = maxrate / 1000;
2679         } else if (maxrate) {
2680                 params.rate_unit = MLX4_QP_RATE_LIMIT_MBS;
2681                 params.rate_val  = maxrate;
2682         } else { /* zero serves to revoke the QP rate-limitation */
2683                 params.rate_unit = 0;
2684                 params.rate_val  = 0;
2685         }
2686
2687         err = mlx4_update_qp(priv->mdev->dev, tx_ring->qpn, MLX4_UPDATE_QP_RATE_LIMIT,
2688                              &params);
2689         return err;
2690 }
2691
2692 static int mlx4_xdp_set(struct net_device *dev, struct bpf_prog *prog)
2693 {
2694         struct mlx4_en_priv *priv = netdev_priv(dev);
2695         struct mlx4_en_dev *mdev = priv->mdev;
2696         struct mlx4_en_port_profile new_prof;
2697         struct bpf_prog *old_prog;
2698         struct mlx4_en_priv *tmp;
2699         int tx_changed = 0;
2700         int xdp_ring_num;
2701         int port_up = 0;
2702         int err;
2703         int i;
2704
2705         xdp_ring_num = prog ? priv->rx_ring_num : 0;
2706
2707         /* No need to reconfigure buffers when simply swapping the
2708          * program for a new one.
2709          */
2710         if (priv->tx_ring_num[TX_XDP] == xdp_ring_num) {
2711                 if (prog) {
2712                         prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2713                         if (IS_ERR(prog))
2714                                 return PTR_ERR(prog);
2715                 }
2716                 mutex_lock(&mdev->state_lock);
2717                 for (i = 0; i < priv->rx_ring_num; i++) {
2718                         old_prog = rcu_dereference_protected(
2719                                         priv->rx_ring[i]->xdp_prog,
2720                                         lockdep_is_held(&mdev->state_lock));
2721                         rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2722                         if (old_prog)
2723                                 bpf_prog_put(old_prog);
2724                 }
2725                 mutex_unlock(&mdev->state_lock);
2726                 return 0;
2727         }
2728
2729         if (!mlx4_en_check_xdp_mtu(dev, dev->mtu))
2730                 return -EOPNOTSUPP;
2731
2732         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
2733         if (!tmp)
2734                 return -ENOMEM;
2735
2736         if (prog) {
2737                 prog = bpf_prog_add(prog, priv->rx_ring_num - 1);
2738                 if (IS_ERR(prog)) {
2739                         err = PTR_ERR(prog);
2740                         goto out;
2741                 }
2742         }
2743
2744         mutex_lock(&mdev->state_lock);
2745         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
2746         new_prof.tx_ring_num[TX_XDP] = xdp_ring_num;
2747
2748         if (priv->tx_ring_num[TX] + xdp_ring_num > MAX_TX_RINGS) {
2749                 tx_changed = 1;
2750                 new_prof.tx_ring_num[TX] =
2751                         MAX_TX_RINGS - ALIGN(xdp_ring_num, MLX4_EN_NUM_UP);
2752                 en_warn(priv, "Reducing the number of TX rings, to not exceed the max total rings number.\n");
2753         }
2754
2755         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
2756         if (err) {
2757                 if (prog)
2758                         bpf_prog_sub(prog, priv->rx_ring_num - 1);
2759                 goto unlock_out;
2760         }
2761
2762         if (priv->port_up) {
2763                 port_up = 1;
2764                 mlx4_en_stop_port(dev, 1);
2765         }
2766
2767         mlx4_en_safe_replace_resources(priv, tmp);
2768         if (tx_changed)
2769                 netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
2770
2771         for (i = 0; i < priv->rx_ring_num; i++) {
2772                 old_prog = rcu_dereference_protected(
2773                                         priv->rx_ring[i]->xdp_prog,
2774                                         lockdep_is_held(&mdev->state_lock));
2775                 rcu_assign_pointer(priv->rx_ring[i]->xdp_prog, prog);
2776                 if (old_prog)
2777                         bpf_prog_put(old_prog);
2778         }
2779
2780         if (port_up) {
2781                 err = mlx4_en_start_port(dev);
2782                 if (err) {
2783                         en_err(priv, "Failed starting port %d for XDP change\n",
2784                                priv->port);
2785                         queue_work(mdev->workqueue, &priv->watchdog_task);
2786                 }
2787         }
2788
2789 unlock_out:
2790         mutex_unlock(&mdev->state_lock);
2791 out:
2792         kfree(tmp);
2793         return err;
2794 }
2795
2796 static bool mlx4_xdp_attached(struct net_device *dev)
2797 {
2798         struct mlx4_en_priv *priv = netdev_priv(dev);
2799
2800         return !!priv->tx_ring_num[TX_XDP];
2801 }
2802
2803 static int mlx4_xdp(struct net_device *dev, struct netdev_xdp *xdp)
2804 {
2805         switch (xdp->command) {
2806         case XDP_SETUP_PROG:
2807                 return mlx4_xdp_set(dev, xdp->prog);
2808         case XDP_QUERY_PROG:
2809                 xdp->prog_attached = mlx4_xdp_attached(dev);
2810                 return 0;
2811         default:
2812                 return -EINVAL;
2813         }
2814 }
2815
2816 static const struct net_device_ops mlx4_netdev_ops = {
2817         .ndo_open               = mlx4_en_open,
2818         .ndo_stop               = mlx4_en_close,
2819         .ndo_start_xmit         = mlx4_en_xmit,
2820         .ndo_select_queue       = mlx4_en_select_queue,
2821         .ndo_get_stats64        = mlx4_en_get_stats64,
2822         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2823         .ndo_set_mac_address    = mlx4_en_set_mac,
2824         .ndo_validate_addr      = eth_validate_addr,
2825         .ndo_change_mtu         = mlx4_en_change_mtu,
2826         .ndo_do_ioctl           = mlx4_en_ioctl,
2827         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2828         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2829         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2830 #ifdef CONFIG_NET_POLL_CONTROLLER
2831         .ndo_poll_controller    = mlx4_en_netpoll,
2832 #endif
2833         .ndo_set_features       = mlx4_en_set_features,
2834         .ndo_fix_features       = mlx4_en_fix_features,
2835         .ndo_setup_tc           = __mlx4_en_setup_tc,
2836 #ifdef CONFIG_RFS_ACCEL
2837         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2838 #endif
2839         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2840         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2841         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2842         .ndo_features_check     = mlx4_en_features_check,
2843         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2844         .ndo_xdp                = mlx4_xdp,
2845 };
2846
2847 static const struct net_device_ops mlx4_netdev_ops_master = {
2848         .ndo_open               = mlx4_en_open,
2849         .ndo_stop               = mlx4_en_close,
2850         .ndo_start_xmit         = mlx4_en_xmit,
2851         .ndo_select_queue       = mlx4_en_select_queue,
2852         .ndo_get_stats64        = mlx4_en_get_stats64,
2853         .ndo_set_rx_mode        = mlx4_en_set_rx_mode,
2854         .ndo_set_mac_address    = mlx4_en_set_mac,
2855         .ndo_validate_addr      = eth_validate_addr,
2856         .ndo_change_mtu         = mlx4_en_change_mtu,
2857         .ndo_tx_timeout         = mlx4_en_tx_timeout,
2858         .ndo_vlan_rx_add_vid    = mlx4_en_vlan_rx_add_vid,
2859         .ndo_vlan_rx_kill_vid   = mlx4_en_vlan_rx_kill_vid,
2860         .ndo_set_vf_mac         = mlx4_en_set_vf_mac,
2861         .ndo_set_vf_vlan        = mlx4_en_set_vf_vlan,
2862         .ndo_set_vf_rate        = mlx4_en_set_vf_rate,
2863         .ndo_set_vf_spoofchk    = mlx4_en_set_vf_spoofchk,
2864         .ndo_set_vf_link_state  = mlx4_en_set_vf_link_state,
2865         .ndo_get_vf_stats       = mlx4_en_get_vf_stats,
2866         .ndo_get_vf_config      = mlx4_en_get_vf_config,
2867 #ifdef CONFIG_NET_POLL_CONTROLLER
2868         .ndo_poll_controller    = mlx4_en_netpoll,
2869 #endif
2870         .ndo_set_features       = mlx4_en_set_features,
2871         .ndo_fix_features       = mlx4_en_fix_features,
2872         .ndo_setup_tc           = __mlx4_en_setup_tc,
2873 #ifdef CONFIG_RFS_ACCEL
2874         .ndo_rx_flow_steer      = mlx4_en_filter_rfs,
2875 #endif
2876         .ndo_get_phys_port_id   = mlx4_en_get_phys_port_id,
2877         .ndo_udp_tunnel_add     = mlx4_en_add_vxlan_port,
2878         .ndo_udp_tunnel_del     = mlx4_en_del_vxlan_port,
2879         .ndo_features_check     = mlx4_en_features_check,
2880         .ndo_set_tx_maxrate     = mlx4_en_set_tx_maxrate,
2881         .ndo_xdp                = mlx4_xdp,
2882 };
2883
2884 struct mlx4_en_bond {
2885         struct work_struct work;
2886         struct mlx4_en_priv *priv;
2887         int is_bonded;
2888         struct mlx4_port_map port_map;
2889 };
2890
2891 static void mlx4_en_bond_work(struct work_struct *work)
2892 {
2893         struct mlx4_en_bond *bond = container_of(work,
2894                                                      struct mlx4_en_bond,
2895                                                      work);
2896         int err = 0;
2897         struct mlx4_dev *dev = bond->priv->mdev->dev;
2898
2899         if (bond->is_bonded) {
2900                 if (!mlx4_is_bonded(dev)) {
2901                         err = mlx4_bond(dev);
2902                         if (err)
2903                                 en_err(bond->priv, "Fail to bond device\n");
2904                 }
2905                 if (!err) {
2906                         err = mlx4_port_map_set(dev, &bond->port_map);
2907                         if (err)
2908                                 en_err(bond->priv, "Fail to set port map [%d][%d]: %d\n",
2909                                        bond->port_map.port1,
2910                                        bond->port_map.port2,
2911                                        err);
2912                 }
2913         } else if (mlx4_is_bonded(dev)) {
2914                 err = mlx4_unbond(dev);
2915                 if (err)
2916                         en_err(bond->priv, "Fail to unbond device\n");
2917         }
2918         dev_put(bond->priv->dev);
2919         kfree(bond);
2920 }
2921
2922 static int mlx4_en_queue_bond_work(struct mlx4_en_priv *priv, int is_bonded,
2923                                    u8 v2p_p1, u8 v2p_p2)
2924 {
2925         struct mlx4_en_bond *bond = NULL;
2926
2927         bond = kzalloc(sizeof(*bond), GFP_ATOMIC);
2928         if (!bond)
2929                 return -ENOMEM;
2930
2931         INIT_WORK(&bond->work, mlx4_en_bond_work);
2932         bond->priv = priv;
2933         bond->is_bonded = is_bonded;
2934         bond->port_map.port1 = v2p_p1;
2935         bond->port_map.port2 = v2p_p2;
2936         dev_hold(priv->dev);
2937         queue_work(priv->mdev->workqueue, &bond->work);
2938         return 0;
2939 }
2940
2941 int mlx4_en_netdev_event(struct notifier_block *this,
2942                          unsigned long event, void *ptr)
2943 {
2944         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
2945         u8 port = 0;
2946         struct mlx4_en_dev *mdev;
2947         struct mlx4_dev *dev;
2948         int i, num_eth_ports = 0;
2949         bool do_bond = true;
2950         struct mlx4_en_priv *priv;
2951         u8 v2p_port1 = 0;
2952         u8 v2p_port2 = 0;
2953
2954         if (!net_eq(dev_net(ndev), &init_net))
2955                 return NOTIFY_DONE;
2956
2957         mdev = container_of(this, struct mlx4_en_dev, nb);
2958         dev = mdev->dev;
2959
2960         /* Go into this mode only when two network devices set on two ports
2961          * of the same mlx4 device are slaves of the same bonding master
2962          */
2963         mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
2964                 ++num_eth_ports;
2965                 if (!port && (mdev->pndev[i] == ndev))
2966                         port = i;
2967                 mdev->upper[i] = mdev->pndev[i] ?
2968                         netdev_master_upper_dev_get(mdev->pndev[i]) : NULL;
2969                 /* condition not met: network device is a slave */
2970                 if (!mdev->upper[i])
2971                         do_bond = false;
2972                 if (num_eth_ports < 2)
2973                         continue;
2974                 /* condition not met: same master */
2975                 if (mdev->upper[i] != mdev->upper[i-1])
2976                         do_bond = false;
2977         }
2978         /* condition not met: 2 salves */
2979         do_bond = (num_eth_ports ==  2) ? do_bond : false;
2980
2981         /* handle only events that come with enough info */
2982         if ((do_bond && (event != NETDEV_BONDING_INFO)) || !port)
2983                 return NOTIFY_DONE;
2984
2985         priv = netdev_priv(ndev);
2986         if (do_bond) {
2987                 struct netdev_notifier_bonding_info *notifier_info = ptr;
2988                 struct netdev_bonding_info *bonding_info =
2989                         &notifier_info->bonding_info;
2990
2991                 /* required mode 1, 2 or 4 */
2992                 if ((bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) &&
2993                     (bonding_info->master.bond_mode != BOND_MODE_XOR) &&
2994                     (bonding_info->master.bond_mode != BOND_MODE_8023AD))
2995                         do_bond = false;
2996
2997                 /* require exactly 2 slaves */
2998                 if (bonding_info->master.num_slaves != 2)
2999                         do_bond = false;
3000
3001                 /* calc v2p */
3002                 if (do_bond) {
3003                         if (bonding_info->master.bond_mode ==
3004                             BOND_MODE_ACTIVEBACKUP) {
3005                                 /* in active-backup mode virtual ports are
3006                                  * mapped to the physical port of the active
3007                                  * slave */
3008                                 if (bonding_info->slave.state ==
3009                                     BOND_STATE_BACKUP) {
3010                                         if (port == 1) {
3011                                                 v2p_port1 = 2;
3012                                                 v2p_port2 = 2;
3013                                         } else {
3014                                                 v2p_port1 = 1;
3015                                                 v2p_port2 = 1;
3016                                         }
3017                                 } else { /* BOND_STATE_ACTIVE */
3018                                         if (port == 1) {
3019                                                 v2p_port1 = 1;
3020                                                 v2p_port2 = 1;
3021                                         } else {
3022                                                 v2p_port1 = 2;
3023                                                 v2p_port2 = 2;
3024                                         }
3025                                 }
3026                         } else { /* Active-Active */
3027                                 /* in active-active mode a virtual port is
3028                                  * mapped to the native physical port if and only
3029                                  * if the physical port is up */
3030                                 __s8 link = bonding_info->slave.link;
3031
3032                                 if (port == 1)
3033                                         v2p_port2 = 2;
3034                                 else
3035                                         v2p_port1 = 1;
3036                                 if ((link == BOND_LINK_UP) ||
3037                                     (link == BOND_LINK_FAIL)) {
3038                                         if (port == 1)
3039                                                 v2p_port1 = 1;
3040                                         else
3041                                                 v2p_port2 = 2;
3042                                 } else { /* BOND_LINK_DOWN || BOND_LINK_BACK */
3043                                         if (port == 1)
3044                                                 v2p_port1 = 2;
3045                                         else
3046                                                 v2p_port2 = 1;
3047                                 }
3048                         }
3049                 }
3050         }
3051
3052         mlx4_en_queue_bond_work(priv, do_bond,
3053                                 v2p_port1, v2p_port2);
3054
3055         return NOTIFY_DONE;
3056 }
3057
3058 void mlx4_en_update_pfc_stats_bitmap(struct mlx4_dev *dev,
3059                                      struct mlx4_en_stats_bitmap *stats_bitmap,
3060                                      u8 rx_ppp, u8 rx_pause,
3061                                      u8 tx_ppp, u8 tx_pause)
3062 {
3063         int last_i = NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PF_STATS;
3064
3065         if (!mlx4_is_slave(dev) &&
3066             (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FLOWSTATS_EN)) {
3067                 mutex_lock(&stats_bitmap->mutex);
3068                 bitmap_clear(stats_bitmap->bitmap, last_i, NUM_FLOW_STATS);
3069
3070                 if (rx_ppp)
3071                         bitmap_set(stats_bitmap->bitmap, last_i,
3072                                    NUM_FLOW_PRIORITY_STATS_RX);
3073                 last_i += NUM_FLOW_PRIORITY_STATS_RX;
3074
3075                 if (rx_pause && !(rx_ppp))
3076                         bitmap_set(stats_bitmap->bitmap, last_i,
3077                                    NUM_FLOW_STATS_RX);
3078                 last_i += NUM_FLOW_STATS_RX;
3079
3080                 if (tx_ppp)
3081                         bitmap_set(stats_bitmap->bitmap, last_i,
3082                                    NUM_FLOW_PRIORITY_STATS_TX);
3083                 last_i += NUM_FLOW_PRIORITY_STATS_TX;
3084
3085                 if (tx_pause && !(tx_ppp))
3086                         bitmap_set(stats_bitmap->bitmap, last_i,
3087                                    NUM_FLOW_STATS_TX);
3088                 last_i += NUM_FLOW_STATS_TX;
3089
3090                 mutex_unlock(&stats_bitmap->mutex);
3091         }
3092 }
3093
3094 void mlx4_en_set_stats_bitmap(struct mlx4_dev *dev,
3095                               struct mlx4_en_stats_bitmap *stats_bitmap,
3096                               u8 rx_ppp, u8 rx_pause,
3097                               u8 tx_ppp, u8 tx_pause)
3098 {
3099         int last_i = 0;
3100
3101         mutex_init(&stats_bitmap->mutex);
3102         bitmap_zero(stats_bitmap->bitmap, NUM_ALL_STATS);
3103
3104         if (mlx4_is_slave(dev)) {
3105                 bitmap_set(stats_bitmap->bitmap, last_i +
3106                                          MLX4_FIND_NETDEV_STAT(rx_packets), 1);
3107                 bitmap_set(stats_bitmap->bitmap, last_i +
3108                                          MLX4_FIND_NETDEV_STAT(tx_packets), 1);
3109                 bitmap_set(stats_bitmap->bitmap, last_i +
3110                                          MLX4_FIND_NETDEV_STAT(rx_bytes), 1);
3111                 bitmap_set(stats_bitmap->bitmap, last_i +
3112                                          MLX4_FIND_NETDEV_STAT(tx_bytes), 1);
3113                 bitmap_set(stats_bitmap->bitmap, last_i +
3114                                          MLX4_FIND_NETDEV_STAT(rx_dropped), 1);
3115                 bitmap_set(stats_bitmap->bitmap, last_i +
3116                                          MLX4_FIND_NETDEV_STAT(tx_dropped), 1);
3117         } else {
3118                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_MAIN_STATS);
3119         }
3120         last_i += NUM_MAIN_STATS;
3121
3122         bitmap_set(stats_bitmap->bitmap, last_i, NUM_PORT_STATS);
3123         last_i += NUM_PORT_STATS;
3124
3125         if (mlx4_is_master(dev))
3126                 bitmap_set(stats_bitmap->bitmap, last_i,
3127                            NUM_PF_STATS);
3128         last_i += NUM_PF_STATS;
3129
3130         mlx4_en_update_pfc_stats_bitmap(dev, stats_bitmap,
3131                                         rx_ppp, rx_pause,
3132                                         tx_ppp, tx_pause);
3133         last_i += NUM_FLOW_STATS;
3134
3135         if (!mlx4_is_slave(dev))
3136                 bitmap_set(stats_bitmap->bitmap, last_i, NUM_PKT_STATS);
3137         last_i += NUM_PKT_STATS;
3138
3139         bitmap_set(stats_bitmap->bitmap, last_i, NUM_XDP_STATS);
3140         last_i += NUM_XDP_STATS;
3141 }
3142
3143 int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
3144                         struct mlx4_en_port_profile *prof)
3145 {
3146         struct net_device *dev;
3147         struct mlx4_en_priv *priv;
3148         int i, t;
3149         int err;
3150
3151         dev = alloc_etherdev_mqs(sizeof(struct mlx4_en_priv),
3152                                  MAX_TX_RINGS, MAX_RX_RINGS);
3153         if (dev == NULL)
3154                 return -ENOMEM;
3155
3156         netif_set_real_num_tx_queues(dev, prof->tx_ring_num[TX]);
3157         netif_set_real_num_rx_queues(dev, prof->rx_ring_num);
3158
3159         SET_NETDEV_DEV(dev, &mdev->dev->persist->pdev->dev);
3160         dev->dev_port = port - 1;
3161
3162         /*
3163          * Initialize driver private data
3164          */
3165
3166         priv = netdev_priv(dev);
3167         memset(priv, 0, sizeof(struct mlx4_en_priv));
3168         priv->counter_index = MLX4_SINK_COUNTER_INDEX(mdev->dev);
3169         spin_lock_init(&priv->stats_lock);
3170         INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode);
3171         INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
3172         INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
3173         INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
3174         INIT_DELAYED_WORK(&priv->service_task, mlx4_en_service_task);
3175         INIT_WORK(&priv->vxlan_add_task, mlx4_en_add_vxlan_offloads);
3176         INIT_WORK(&priv->vxlan_del_task, mlx4_en_del_vxlan_offloads);
3177 #ifdef CONFIG_RFS_ACCEL
3178         INIT_LIST_HEAD(&priv->filters);
3179         spin_lock_init(&priv->filters_lock);
3180 #endif
3181
3182         priv->dev = dev;
3183         priv->mdev = mdev;
3184         priv->ddev = &mdev->pdev->dev;
3185         priv->prof = prof;
3186         priv->port = port;
3187         priv->port_up = false;
3188         priv->flags = prof->flags;
3189         priv->pflags = MLX4_EN_PRIV_FLAGS_BLUEFLAME;
3190         priv->ctrl_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
3191                         MLX4_WQE_CTRL_SOLICITED);
3192         priv->num_tx_rings_p_up = mdev->profile.num_tx_rings_p_up;
3193         priv->tx_work_limit = MLX4_EN_DEFAULT_TX_WORK;
3194         netdev_rss_key_fill(priv->rss_key, sizeof(priv->rss_key));
3195
3196         for (t = 0; t < MLX4_EN_NUM_TX_TYPES; t++) {
3197                 priv->tx_ring_num[t] = prof->tx_ring_num[t];
3198                 if (!priv->tx_ring_num[t])
3199                         continue;
3200
3201                 priv->tx_ring[t] = kzalloc(sizeof(struct mlx4_en_tx_ring *) *
3202                                            MAX_TX_RINGS, GFP_KERNEL);
3203                 if (!priv->tx_ring[t]) {
3204                         err = -ENOMEM;
3205                         goto err_free_tx;
3206                 }
3207                 priv->tx_cq[t] = kzalloc(sizeof(struct mlx4_en_cq *) *
3208                                          MAX_TX_RINGS, GFP_KERNEL);
3209                 if (!priv->tx_cq[t]) {
3210                         kfree(priv->tx_ring[t]);
3211                         err = -ENOMEM;
3212                         goto out;
3213                 }
3214         }
3215         priv->rx_ring_num = prof->rx_ring_num;
3216         priv->cqe_factor = (mdev->dev->caps.cqe_size == 64) ? 1 : 0;
3217         priv->cqe_size = mdev->dev->caps.cqe_size;
3218         priv->mac_index = -1;
3219         priv->msg_enable = MLX4_EN_MSG_LEVEL;
3220 #ifdef CONFIG_MLX4_EN_DCB
3221         if (!mlx4_is_slave(priv->mdev->dev)) {
3222                 priv->dcbx_cap = DCB_CAP_DCBX_VER_CEE | DCB_CAP_DCBX_HOST |
3223                         DCB_CAP_DCBX_VER_IEEE;
3224                 priv->flags |= MLX4_EN_DCB_ENABLED;
3225                 priv->cee_config.pfc_state = false;
3226
3227                 for (i = 0; i < MLX4_EN_NUM_UP; i++)
3228                         priv->cee_config.dcb_pfc[i] = pfc_disabled;
3229
3230                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) {
3231                         dev->dcbnl_ops = &mlx4_en_dcbnl_ops;
3232                 } else {
3233                         en_info(priv, "enabling only PFC DCB ops\n");
3234                         dev->dcbnl_ops = &mlx4_en_dcbnl_pfc_ops;
3235                 }
3236         }
3237 #endif
3238
3239         for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i)
3240                 INIT_HLIST_HEAD(&priv->mac_hash[i]);
3241
3242         /* Query for default mac and max mtu */
3243         priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
3244
3245         if (mdev->dev->caps.rx_checksum_flags_port[priv->port] &
3246             MLX4_RX_CSUM_MODE_VAL_NON_TCP_UDP)
3247                 priv->flags |= MLX4_EN_FLAG_RX_CSUM_NON_TCP_UDP;
3248
3249         /* Set default MAC */
3250         dev->addr_len = ETH_ALEN;
3251         mlx4_en_u64_to_mac(dev->dev_addr, mdev->dev->caps.def_mac[priv->port]);
3252         if (!is_valid_ether_addr(dev->dev_addr)) {
3253                 en_err(priv, "Port: %d, invalid mac burned: %pM, quiting\n",
3254                        priv->port, dev->dev_addr);
3255                 err = -EINVAL;
3256                 goto out;
3257         } else if (mlx4_is_slave(priv->mdev->dev) &&
3258                    (priv->mdev->dev->port_random_macs & 1 << priv->port)) {
3259                 /* Random MAC was assigned in mlx4_slave_cap
3260                  * in mlx4_core module
3261                  */
3262                 dev->addr_assign_type |= NET_ADDR_RANDOM;
3263                 en_warn(priv, "Assigned random MAC address %pM\n", dev->dev_addr);
3264         }
3265
3266         memcpy(priv->current_mac, dev->dev_addr, sizeof(priv->current_mac));
3267
3268         priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
3269                                           DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
3270         err = mlx4_en_alloc_resources(priv);
3271         if (err)
3272                 goto out;
3273
3274         /* Initialize time stamping config */
3275         priv->hwtstamp_config.flags = 0;
3276         priv->hwtstamp_config.tx_type = HWTSTAMP_TX_OFF;
3277         priv->hwtstamp_config.rx_filter = HWTSTAMP_FILTER_NONE;
3278
3279         /* Allocate page for receive rings */
3280         err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
3281                                 MLX4_EN_PAGE_SIZE);
3282         if (err) {
3283                 en_err(priv, "Failed to allocate page for rx qps\n");
3284                 goto out;
3285         }
3286         priv->allocated = 1;
3287
3288         /*
3289          * Initialize netdev entry points
3290          */
3291         if (mlx4_is_master(priv->mdev->dev))
3292                 dev->netdev_ops = &mlx4_netdev_ops_master;
3293         else
3294                 dev->netdev_ops = &mlx4_netdev_ops;
3295         dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
3296         netif_set_real_num_tx_queues(dev, priv->tx_ring_num[TX]);
3297         netif_set_real_num_rx_queues(dev, priv->rx_ring_num);
3298
3299         dev->ethtool_ops = &mlx4_en_ethtool_ops;
3300
3301         /*
3302          * Set driver features
3303          */
3304         dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
3305         if (mdev->LSO_support)
3306                 dev->hw_features |= NETIF_F_TSO | NETIF_F_TSO6;
3307
3308         dev->vlan_features = dev->hw_features;
3309
3310         dev->hw_features |= NETIF_F_RXCSUM | NETIF_F_RXHASH;
3311         dev->features = dev->hw_features | NETIF_F_HIGHDMA |
3312                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3313                         NETIF_F_HW_VLAN_CTAG_FILTER;
3314         dev->hw_features |= NETIF_F_LOOPBACK |
3315                         NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
3316
3317         if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN)) {
3318                 dev->features |= NETIF_F_HW_VLAN_STAG_RX |
3319                         NETIF_F_HW_VLAN_STAG_FILTER;
3320                 dev->hw_features |= NETIF_F_HW_VLAN_STAG_RX;
3321         }
3322
3323         if (mlx4_is_slave(mdev->dev)) {
3324                 bool vlan_offload_disabled;
3325                 int phv;
3326
3327                 err = get_phv_bit(mdev->dev, port, &phv);
3328                 if (!err && phv) {
3329                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3330                         priv->pflags |= MLX4_EN_PRIV_FLAGS_PHV;
3331                 }
3332                 err = mlx4_get_is_vlan_offload_disabled(mdev->dev, port,
3333                                                         &vlan_offload_disabled);
3334                 if (!err && vlan_offload_disabled) {
3335                         dev->hw_features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3336                                               NETIF_F_HW_VLAN_CTAG_RX |
3337                                               NETIF_F_HW_VLAN_STAG_TX |
3338                                               NETIF_F_HW_VLAN_STAG_RX);
3339                         dev->features &= ~(NETIF_F_HW_VLAN_CTAG_TX |
3340                                            NETIF_F_HW_VLAN_CTAG_RX |
3341                                            NETIF_F_HW_VLAN_STAG_TX |
3342                                            NETIF_F_HW_VLAN_STAG_RX);
3343                 }
3344         } else {
3345                 if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN &&
3346                     !(mdev->dev->caps.flags2 &
3347                       MLX4_DEV_CAP_FLAG2_SKIP_OUTER_VLAN))
3348                         dev->hw_features |= NETIF_F_HW_VLAN_STAG_TX;
3349         }
3350
3351         if (mdev->dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)
3352                 dev->hw_features |= NETIF_F_RXFCS;
3353
3354         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)
3355                 dev->hw_features |= NETIF_F_RXALL;
3356
3357         if (mdev->dev->caps.steering_mode ==
3358             MLX4_STEERING_MODE_DEVICE_MANAGED &&
3359             mdev->dev->caps.dmfs_high_steer_mode != MLX4_STEERING_DMFS_A0_STATIC)
3360                 dev->hw_features |= NETIF_F_NTUPLE;
3361
3362         if (mdev->dev->caps.steering_mode != MLX4_STEERING_MODE_A0)
3363                 dev->priv_flags |= IFF_UNICAST_FLT;
3364
3365         /* Setting a default hash function value */
3366         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_TOP) {
3367                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3368         } else if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_RSS_XOR) {
3369                 priv->rss_hash_fn = ETH_RSS_HASH_XOR;
3370         } else {
3371                 en_warn(priv,
3372                         "No RSS hash capabilities exposed, using Toeplitz\n");
3373                 priv->rss_hash_fn = ETH_RSS_HASH_TOP;
3374         }
3375
3376         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3377                 dev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
3378                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3379                                     NETIF_F_GSO_PARTIAL;
3380                 dev->features    |= NETIF_F_GSO_UDP_TUNNEL |
3381                                     NETIF_F_GSO_UDP_TUNNEL_CSUM |
3382                                     NETIF_F_GSO_PARTIAL;
3383                 dev->gso_partial_features = NETIF_F_GSO_UDP_TUNNEL_CSUM;
3384         }
3385
3386         /* MTU range: 46 - hw-specific max */
3387         dev->min_mtu = MLX4_EN_MIN_MTU;
3388         dev->max_mtu = priv->max_mtu;
3389
3390         mdev->pndev[port] = dev;
3391         mdev->upper[port] = NULL;
3392
3393         netif_carrier_off(dev);
3394         mlx4_en_set_default_moderation(priv);
3395
3396         en_warn(priv, "Using %d TX rings\n", prof->tx_ring_num[TX]);
3397         en_warn(priv, "Using %d RX rings\n", prof->rx_ring_num);
3398
3399         mlx4_en_update_loopback_state(priv->dev, priv->dev->features);
3400
3401         /* Configure port */
3402         mlx4_en_calc_rx_buf(dev);
3403         err = mlx4_SET_PORT_general(mdev->dev, priv->port,
3404                                     priv->rx_skb_size + ETH_FCS_LEN,
3405                                     prof->tx_pause, prof->tx_ppp,
3406                                     prof->rx_pause, prof->rx_ppp);
3407         if (err) {
3408                 en_err(priv, "Failed setting port general configurations for port %d, with error %d\n",
3409                        priv->port, err);
3410                 goto out;
3411         }
3412
3413         if (mdev->dev->caps.tunnel_offload_mode == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) {
3414                 err = mlx4_SET_PORT_VXLAN(mdev->dev, priv->port, VXLAN_STEER_BY_OUTER_MAC, 1);
3415                 if (err) {
3416                         en_err(priv, "Failed setting port L2 tunnel configuration, err %d\n",
3417                                err);
3418                         goto out;
3419                 }
3420         }
3421
3422         /* Init port */
3423         en_warn(priv, "Initializing port\n");
3424         err = mlx4_INIT_PORT(mdev->dev, priv->port);
3425         if (err) {
3426                 en_err(priv, "Failed Initializing port\n");
3427                 goto out;
3428         }
3429         queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
3430
3431         /* Initialize time stamp mechanism */
3432         if (mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS)
3433                 mlx4_en_init_timestamp(mdev);
3434
3435         queue_delayed_work(mdev->workqueue, &priv->service_task,
3436                            SERVICE_TASK_DELAY);
3437
3438         mlx4_en_set_stats_bitmap(mdev->dev, &priv->stats_bitmap,
3439                                  mdev->profile.prof[priv->port].rx_ppp,
3440                                  mdev->profile.prof[priv->port].rx_pause,
3441                                  mdev->profile.prof[priv->port].tx_ppp,
3442                                  mdev->profile.prof[priv->port].tx_pause);
3443
3444         err = register_netdev(dev);
3445         if (err) {
3446                 en_err(priv, "Netdev registration failed for port %d\n", port);
3447                 goto out;
3448         }
3449
3450         priv->registered = 1;
3451         devlink_port_type_eth_set(mlx4_get_devlink_port(mdev->dev, priv->port),
3452                                   dev);
3453
3454         return 0;
3455
3456 err_free_tx:
3457         while (t--) {
3458                 kfree(priv->tx_ring[t]);
3459                 kfree(priv->tx_cq[t]);
3460         }
3461 out:
3462         mlx4_en_destroy_netdev(dev);
3463         return err;
3464 }
3465
3466 int mlx4_en_reset_config(struct net_device *dev,
3467                          struct hwtstamp_config ts_config,
3468                          netdev_features_t features)
3469 {
3470         struct mlx4_en_priv *priv = netdev_priv(dev);
3471         struct mlx4_en_dev *mdev = priv->mdev;
3472         struct mlx4_en_port_profile new_prof;
3473         struct mlx4_en_priv *tmp;
3474         int port_up = 0;
3475         int err = 0;
3476
3477         if (priv->hwtstamp_config.tx_type == ts_config.tx_type &&
3478             priv->hwtstamp_config.rx_filter == ts_config.rx_filter &&
3479             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3480             !DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS))
3481                 return 0; /* Nothing to change */
3482
3483         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX) &&
3484             (features & NETIF_F_HW_VLAN_CTAG_RX) &&
3485             (priv->hwtstamp_config.rx_filter != HWTSTAMP_FILTER_NONE)) {
3486                 en_warn(priv, "Can't turn ON rx vlan offload while time-stamping rx filter is ON\n");
3487                 return -EINVAL;
3488         }
3489
3490         tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
3491         if (!tmp)
3492                 return -ENOMEM;
3493
3494         mutex_lock(&mdev->state_lock);
3495
3496         memcpy(&new_prof, priv->prof, sizeof(struct mlx4_en_port_profile));
3497         memcpy(&new_prof.hwtstamp_config, &ts_config, sizeof(ts_config));
3498
3499         err = mlx4_en_try_alloc_resources(priv, tmp, &new_prof);
3500         if (err)
3501                 goto out;
3502
3503         if (priv->port_up) {
3504                 port_up = 1;
3505                 mlx4_en_stop_port(dev, 1);
3506         }
3507
3508         en_warn(priv, "Changing device configuration rx filter(%x) rx vlan(%x)\n",
3509                 ts_config.rx_filter,
3510                 !!(features & NETIF_F_HW_VLAN_CTAG_RX));
3511
3512         mlx4_en_safe_replace_resources(priv, tmp);
3513
3514         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_HW_VLAN_CTAG_RX)) {
3515                 if (features & NETIF_F_HW_VLAN_CTAG_RX)
3516                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3517                 else
3518                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3519         } else if (ts_config.rx_filter == HWTSTAMP_FILTER_NONE) {
3520                 /* RX time-stamping is OFF, update the RX vlan offload
3521                  * to the latest wanted state
3522                  */
3523                 if (dev->wanted_features & NETIF_F_HW_VLAN_CTAG_RX)
3524                         dev->features |= NETIF_F_HW_VLAN_CTAG_RX;
3525                 else
3526                         dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3527         }
3528
3529         if (DEV_FEATURE_CHANGED(dev, features, NETIF_F_RXFCS)) {
3530                 if (features & NETIF_F_RXFCS)
3531                         dev->features |= NETIF_F_RXFCS;
3532                 else
3533                         dev->features &= ~NETIF_F_RXFCS;
3534         }
3535
3536         /* RX vlan offload and RX time-stamping can't co-exist !
3537          * Regardless of the caller's choice,
3538          * Turn Off RX vlan offload in case of time-stamping is ON
3539          */
3540         if (ts_config.rx_filter != HWTSTAMP_FILTER_NONE) {
3541                 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
3542                         en_warn(priv, "Turning off RX vlan offload since RX time-stamping is ON\n");
3543                 dev->features &= ~NETIF_F_HW_VLAN_CTAG_RX;
3544         }
3545
3546         if (port_up) {
3547                 err = mlx4_en_start_port(dev);
3548                 if (err)
3549                         en_err(priv, "Failed starting port\n");
3550         }
3551
3552 out:
3553         mutex_unlock(&mdev->state_lock);
3554         kfree(tmp);
3555         if (!err)
3556                 netdev_features_change(dev);
3557         return err;
3558 }