drivers/net/mlx5/mlx5.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2015 6WIND S.A.
   5  *   Copyright 2015 Mellanox.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of 6WIND S.A. nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stddef.h>
  35 #include <unistd.h>
  36 #include <string.h>
  37 #include <assert.h>
  38 #include <stdint.h>
  39 #include <stdlib.h>
  40 #include <net/if.h>
  41
  42 /* Verbs header. */
  43 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
  44 #ifdef PEDANTIC
  45 #pragma GCC diagnostic ignored "-pedantic"
  46 #endif
  47 #include <infiniband/verbs.h>
  48 #ifdef PEDANTIC
  49 #pragma GCC diagnostic error "-pedantic"
  50 #endif
  51
  52 /* DPDK headers don't like -pedantic. */
  53 #ifdef PEDANTIC
  54 #pragma GCC diagnostic ignored "-pedantic"
  55 #endif
  56 #include <rte_malloc.h>
  57 #include <rte_ethdev.h>
  58 #include <rte_pci.h>
  59 #include <rte_common.h>
  60 #ifdef PEDANTIC
  61 #pragma GCC diagnostic error "-pedantic"
  62 #endif
  63
  64 #include "mlx5.h"
  65 #include "mlx5_utils.h"
  66 #include "mlx5_rxtx.h"
  67 #include "mlx5_autoconf.h"
  68 #include "mlx5_defs.h"
  69
  70 /**
  71  * DPDK callback to close the device.
  72  *
  73  * Destroy all queues and objects, free memory.
  74  *
  75  * @param dev
  76  *   Pointer to Ethernet device structure.
  77  */
  78 static void
  79 mlx5_dev_close(struct rte_eth_dev *dev)
  80 {
  81         struct priv *priv = dev->data->dev_private;
  82         void *tmp;
  83         unsigned int i;
  84
  85         priv_lock(priv);
  86         DEBUG("%p: closing device \"%s\"",
  87               (void *)dev,
  88               ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
  89         /* In case mlx5_dev_stop() has not been called. */
  90         priv_dev_interrupt_handler_uninstall(priv, dev);
  91         priv_special_flow_disable_all(priv);
  92         priv_mac_addrs_disable(priv);
  93         priv_destroy_hash_rxqs(priv);
  94
  95         /* Remove flow director elements. */
  96         priv_fdir_disable(priv);
  97         priv_fdir_delete_filters_list(priv);
  98
  99         /* Prevent crashes when queues are still in use. */
 100         dev->rx_pkt_burst = removed_rx_burst;
 101         dev->tx_pkt_burst = removed_tx_burst;
 102         if (priv->rxqs != NULL) {
 103                 /* XXX race condition if mlx5_rx_burst() is still running. */
 104                 usleep(1000);
 105                 for (i = 0; (i != priv->rxqs_n); ++i) {
 106                         tmp = (*priv->rxqs)[i];
 107                         if (tmp == NULL)
 108                                 continue;
 109                         (*priv->rxqs)[i] = NULL;
 110                         rxq_cleanup(tmp);
 111                         rte_free(tmp);
 112                 }
 113                 priv->rxqs_n = 0;
 114                 priv->rxqs = NULL;
 115         }
 116         if (priv->txqs != NULL) {
 117                 /* XXX race condition if mlx5_tx_burst() is still running. */
 118                 usleep(1000);
 119                 for (i = 0; (i != priv->txqs_n); ++i) {
 120                         tmp = (*priv->txqs)[i];
 121                         if (tmp == NULL)
 122                                 continue;
 123                         (*priv->txqs)[i] = NULL;
 124                         txq_cleanup(tmp);
 125                         rte_free(tmp);
 126                 }
 127                 priv->txqs_n = 0;
 128                 priv->txqs = NULL;
 129         }
 130         if (priv->pd != NULL) {
 131                 assert(priv->ctx != NULL);
 132                 claim_zero(ibv_dealloc_pd(priv->pd));
 133                 claim_zero(ibv_close_device(priv->ctx));
 134         } else
 135                 assert(priv->ctx == NULL);
 136         if (priv->rss_conf != NULL) {
 137                 for (i = 0; (i != hash_rxq_init_n); ++i)
 138                         rte_free((*priv->rss_conf)[i]);
 139                 rte_free(priv->rss_conf);
 140         }
 141         if (priv->reta_idx != NULL)
 142                 rte_free(priv->reta_idx);
 143         priv_unlock(priv);
 144         memset(priv, 0, sizeof(*priv));
 145 }
 146
 147 static const struct eth_dev_ops mlx5_dev_ops = {
 148         .dev_configure = mlx5_dev_configure,
 149         .dev_start = mlx5_dev_start,
 150         .dev_stop = mlx5_dev_stop,
 151         .dev_close = mlx5_dev_close,
 152         .promiscuous_enable = mlx5_promiscuous_enable,
 153         .promiscuous_disable = mlx5_promiscuous_disable,
 154         .allmulticast_enable = mlx5_allmulticast_enable,
 155         .allmulticast_disable = mlx5_allmulticast_disable,
 156         .link_update = mlx5_link_update,
 157         .stats_get = mlx5_stats_get,
 158         .stats_reset = mlx5_stats_reset,
 159         .dev_infos_get = mlx5_dev_infos_get,
 160         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
 161         .vlan_filter_set = mlx5_vlan_filter_set,
 162         .rx_queue_setup = mlx5_rx_queue_setup,
 163         .tx_queue_setup = mlx5_tx_queue_setup,
 164         .rx_queue_release = mlx5_rx_queue_release,
 165         .tx_queue_release = mlx5_tx_queue_release,
 166         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
 167         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
 168         .mac_addr_remove = mlx5_mac_addr_remove,
 169         .mac_addr_add = mlx5_mac_addr_add,
 170         .mac_addr_set = mlx5_mac_addr_set,
 171         .mtu_set = mlx5_dev_set_mtu,
 172 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 173         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
 174         .vlan_offload_set = mlx5_vlan_offload_set,
 175 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 176         .reta_update = mlx5_dev_rss_reta_update,
 177         .reta_query = mlx5_dev_rss_reta_query,
 178         .rss_hash_update = mlx5_rss_hash_update,
 179         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
 180 #ifdef MLX5_FDIR_SUPPORT
 181         .filter_ctrl = mlx5_dev_filter_ctrl,
 182 #endif /* MLX5_FDIR_SUPPORT */
 183 };
 184
 185 static struct {
 186         struct rte_pci_addr pci_addr; /* associated PCI address */
 187         uint32_t ports; /* physical ports bitfield. */
 188 } mlx5_dev[32];
 189
 190 /**
 191  * Get device index in mlx5_dev[] from PCI bus address.
 192  *
 193  * @param[in] pci_addr
 194  *   PCI bus address to look for.
 195  *
 196  * @return
 197  *   mlx5_dev[] index on success, -1 on failure.
 198  */
 199 static int
 200 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
 201 {
 202         unsigned int i;
 203         int ret = -1;
 204
 205         assert(pci_addr != NULL);
 206         for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
 207                 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
 208                     (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
 209                     (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
 210                     (mlx5_dev[i].pci_addr.function == pci_addr->function))
 211                         return i;
 212                 if ((mlx5_dev[i].ports == 0) && (ret == -1))
 213                         ret = i;
 214         }
 215         return ret;
 216 }
 217
 218 static struct eth_driver mlx5_driver;
 219
 220 /**
 221  * DPDK callback to register a PCI device.
 222  *
 223  * This function creates an Ethernet device for each port of a given
 224  * PCI device.
 225  *
 226  * @param[in] pci_drv
 227  *   PCI driver structure (mlx5_driver).
 228  * @param[in] pci_dev
 229  *   PCI device information.
 230  *
 231  * @return
 232  *   0 on success, negative errno value on failure.
 233  */
 234 static int
 235 mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 236 {
 237         struct ibv_device **list;
 238         struct ibv_device *ibv_dev;
 239         int err = 0;
 240         struct ibv_context *attr_ctx = NULL;
 241         struct ibv_device_attr device_attr;
 242         unsigned int vf;
 243         int idx;
 244         int i;
 245
 246         (void)pci_drv;
 247         assert(pci_drv == &mlx5_driver.pci_drv);
 248         /* Get mlx5_dev[] index. */
 249         idx = mlx5_dev_idx(&pci_dev->addr);
 250         if (idx == -1) {
 251                 ERROR("this driver cannot support any more adapters");
 252                 return -ENOMEM;
 253         }
 254         DEBUG("using driver device index %d", idx);
 255
 256         /* Save PCI address. */
 257         mlx5_dev[idx].pci_addr = pci_dev->addr;
 258         list = ibv_get_device_list(&i);
 259         if (list == NULL) {
 260                 assert(errno);
 261                 if (errno == ENOSYS) {
 262                         WARN("cannot list devices, is ib_uverbs loaded?");
 263                         return 0;
 264                 }
 265                 return -errno;
 266         }
 267         assert(i >= 0);
 268         /*
 269          * For each listed device, check related sysfs entry against
 270          * the provided PCI ID.
 271          */
 272         while (i != 0) {
 273                 struct rte_pci_addr pci_addr;
 274
 275                 --i;
 276                 DEBUG("checking device \"%s\"", list[i]->name);
 277                 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
 278                         continue;
 279                 if ((pci_dev->addr.domain != pci_addr.domain) ||
 280                     (pci_dev->addr.bus != pci_addr.bus) ||
 281                     (pci_dev->addr.devid != pci_addr.devid) ||
 282                     (pci_dev->addr.function != pci_addr.function))
 283                         continue;
 284                 vf = ((pci_dev->id.device_id ==
 285                        PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
 286                       (pci_dev->id.device_id ==
 287                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
 288                 INFO("PCI information matches, using device \"%s\" (VF: %s)",
 289                      list[i]->name, (vf ? "true" : "false"));
 290                 attr_ctx = ibv_open_device(list[i]);
 291                 err = errno;
 292                 break;
 293         }
 294         if (attr_ctx == NULL) {
 295                 ibv_free_device_list(list);
 296                 switch (err) {
 297                 case 0:
 298                         WARN("cannot access device, is mlx5_ib loaded?");
 299                         return 0;
 300                 case EINVAL:
 301                         WARN("cannot use device, are drivers up to date?");
 302                         return 0;
 303                 }
 304                 assert(err > 0);
 305                 return -err;
 306         }
 307         ibv_dev = list[i];
 308
 309         DEBUG("device opened");
 310         if (ibv_query_device(attr_ctx, &device_attr))
 311                 goto error;
 312         INFO("%u port(s) detected", device_attr.phys_port_cnt);
 313
 314         for (i = 0; i < device_attr.phys_port_cnt; i++) {
 315                 uint32_t port = i + 1; /* ports are indexed from one */
 316                 uint32_t test = (1 << i);
 317                 struct ibv_context *ctx = NULL;
 318                 struct ibv_port_attr port_attr;
 319                 struct ibv_pd *pd = NULL;
 320                 struct priv *priv = NULL;
 321                 struct rte_eth_dev *eth_dev;
 322 #ifdef HAVE_EXP_QUERY_DEVICE
 323                 struct ibv_exp_device_attr exp_device_attr;
 324 #endif /* HAVE_EXP_QUERY_DEVICE */
 325                 struct ether_addr mac;
 326
 327 #ifdef HAVE_EXP_QUERY_DEVICE
 328                 exp_device_attr.comp_mask =
 329                         IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS |
 330                         IBV_EXP_DEVICE_ATTR_RX_HASH |
 331 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 332                         IBV_EXP_DEVICE_ATTR_VLAN_OFFLOADS |
 333 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 334                         0;
 335 #endif /* HAVE_EXP_QUERY_DEVICE */
 336
 337                 DEBUG("using port %u (%08" PRIx32 ")", port, test);
 338
 339                 ctx = ibv_open_device(ibv_dev);
 340                 if (ctx == NULL)
 341                         goto port_error;
 342
 343                 /* Check port status. */
 344                 err = ibv_query_port(ctx, port, &port_attr);
 345                 if (err) {
 346                         ERROR("port query failed: %s", strerror(err));
 347                         goto port_error;
 348                 }
 349
 350                 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
 351                         ERROR("port %d is not configured in Ethernet mode",
 352                               port);
 353                         goto port_error;
 354                 }
 355
 356                 if (port_attr.state != IBV_PORT_ACTIVE)
 357                         DEBUG("port %d is not active: \"%s\" (%d)",
 358                               port, ibv_port_state_str(port_attr.state),
 359                               port_attr.state);
 360
 361                 /* Allocate protection domain. */
 362                 pd = ibv_alloc_pd(ctx);
 363                 if (pd == NULL) {
 364                         ERROR("PD allocation failure");
 365                         err = ENOMEM;
 366                         goto port_error;
 367                 }
 368
 369                 mlx5_dev[idx].ports |= test;
 370
 371                 /* from rte_ethdev.c */
 372                 priv = rte_zmalloc("ethdev private structure",
 373                                    sizeof(*priv),
 374                                    RTE_CACHE_LINE_SIZE);
 375                 if (priv == NULL) {
 376                         ERROR("priv allocation failure");
 377                         err = ENOMEM;
 378                         goto port_error;
 379                 }
 380
 381                 priv->ctx = ctx;
 382                 priv->device_attr = device_attr;
 383                 priv->port = port;
 384                 priv->pd = pd;
 385                 priv->mtu = ETHER_MTU;
 386 #ifdef HAVE_EXP_QUERY_DEVICE
 387                 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
 388                         ERROR("ibv_exp_query_device() failed");
 389                         goto port_error;
 390                 }
 391
 392                 priv->hw_csum =
 393                         ((exp_device_attr.exp_device_cap_flags &
 394                           IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
 395                          (exp_device_attr.exp_device_cap_flags &
 396                           IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
 397                 DEBUG("checksum offloading is %ssupported",
 398                       (priv->hw_csum ? "" : "not "));
 399
 400                 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
 401                                          IBV_EXP_DEVICE_VXLAN_SUPPORT);
 402                 DEBUG("L2 tunnel checksum offloads are %ssupported",
 403                       (priv->hw_csum_l2tun ? "" : "not "));
 404
 405                 priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
 406                 /* Remove this check once DPDK supports larger/variable
 407                  * indirection tables. */
 408                 if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
 409                         priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 410                 DEBUG("maximum RX indirection table size is %u",
 411                       priv->ind_table_max_size);
 412 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 413                 priv->hw_vlan_strip = !!(exp_device_attr.wq_vlan_offloads_cap &
 414                                          IBV_EXP_RECEIVE_WQ_CVLAN_STRIP);
 415 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 416                 DEBUG("VLAN stripping is %ssupported",
 417                       (priv->hw_vlan_strip ? "" : "not "));
 418
 419 #else /* HAVE_EXP_QUERY_DEVICE */
 420                 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 421 #endif /* HAVE_EXP_QUERY_DEVICE */
 422
 423                 priv->vf = vf;
 424                 /* Allocate and register default RSS hash keys. */
 425                 priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
 426                                             sizeof((*priv->rss_conf)[0]), 0);
 427                 if (priv->rss_conf == NULL) {
 428                         err = ENOMEM;
 429                         goto port_error;
 430                 }
 431                 err = rss_hash_rss_conf_new_key(priv,
 432                                                 rss_hash_default_key,
 433                                                 rss_hash_default_key_len,
 434                                                 ETH_RSS_PROTO_MASK);
 435                 if (err)
 436                         goto port_error;
 437                 /* Configure the first MAC address by default. */
 438                 if (priv_get_mac(priv, &mac.addr_bytes)) {
 439                         ERROR("cannot get MAC address, is mlx5_en loaded?"
 440                               " (errno: %s)", strerror(errno));
 441                         goto port_error;
 442                 }
 443                 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
 444                      priv->port,
 445                      mac.addr_bytes[0], mac.addr_bytes[1],
 446                      mac.addr_bytes[2], mac.addr_bytes[3],
 447                      mac.addr_bytes[4], mac.addr_bytes[5]);
 448                 /* Register MAC address. */
 449                 claim_zero(priv_mac_addr_add(priv, 0,
 450                                              (const uint8_t (*)[ETHER_ADDR_LEN])
 451                                              mac.addr_bytes));
 452                 /* Initialize FD filters list. */
 453                 err = fdir_init_filters_list(priv);
 454                 if (err)
 455                         goto port_error;
 456 #ifndef NDEBUG
 457                 {
 458                         char ifname[IF_NAMESIZE];
 459
 460                         if (priv_get_ifname(priv, &ifname) == 0)
 461                                 DEBUG("port %u ifname is \"%s\"",
 462                                       priv->port, ifname);
 463                         else
 464                                 DEBUG("port %u ifname is unknown", priv->port);
 465                 }
 466 #endif
 467                 /* Get actual MTU if possible. */
 468                 priv_get_mtu(priv, &priv->mtu);
 469                 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
 470
 471                 /* from rte_ethdev.c */
 472                 {
 473                         char name[RTE_ETH_NAME_MAX_LEN];
 474
 475                         snprintf(name, sizeof(name), "%s port %u",
 476                                  ibv_get_device_name(ibv_dev), port);
 477                         eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
 478                 }
 479                 if (eth_dev == NULL) {
 480                         ERROR("can not allocate rte ethdev");
 481                         err = ENOMEM;
 482                         goto port_error;
 483                 }
 484
 485                 eth_dev->data->dev_private = priv;
 486                 eth_dev->pci_dev = pci_dev;
 487
 488                 rte_eth_copy_pci_info(eth_dev, pci_dev);
 489
 490                 eth_dev->driver = &mlx5_driver;
 491                 eth_dev->data->rx_mbuf_alloc_failed = 0;
 492                 eth_dev->data->mtu = ETHER_MTU;
 493
 494                 priv->dev = eth_dev;
 495                 eth_dev->dev_ops = &mlx5_dev_ops;
 496                 eth_dev->data->mac_addrs = priv->mac;
 497                 TAILQ_INIT(&eth_dev->link_intr_cbs);
 498
 499                 /* Bring Ethernet device up. */
 500                 DEBUG("forcing Ethernet interface up");
 501                 priv_set_flags(priv, ~IFF_UP, IFF_UP);
 502                 continue;
 503
 504 port_error:
 505                 if (priv) {
 506                         rte_free(priv->rss_conf);
 507                         rte_free(priv);
 508                 }
 509                 if (pd)
 510                         claim_zero(ibv_dealloc_pd(pd));
 511                 if (ctx)
 512                         claim_zero(ibv_close_device(ctx));
 513                 break;
 514         }
 515
 516         /*
 517          * XXX if something went wrong in the loop above, there is a resource
 518          * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
 519          * long as the dpdk does not provide a way to deallocate a ethdev and a
 520          * way to enumerate the registered ethdevs to free the previous ones.
 521          */
 522
 523         /* no port found, complain */
 524         if (!mlx5_dev[idx].ports) {
 525                 err = ENODEV;
 526                 goto error;
 527         }
 528
 529 error:
 530         if (attr_ctx)
 531                 claim_zero(ibv_close_device(attr_ctx));
 532         if (list)
 533                 ibv_free_device_list(list);
 534         assert(err >= 0);
 535         return -err;
 536 }
 537
 538 static const struct rte_pci_id mlx5_pci_id_map[] = {
 539         {
 540                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 541                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4,
 542                 .subsystem_vendor_id = PCI_ANY_ID,
 543                 .subsystem_device_id = PCI_ANY_ID
 544         },
 545         {
 546                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 547                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4VF,
 548                 .subsystem_vendor_id = PCI_ANY_ID,
 549                 .subsystem_device_id = PCI_ANY_ID
 550         },
 551         {
 552                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 553                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LX,
 554                 .subsystem_vendor_id = PCI_ANY_ID,
 555                 .subsystem_device_id = PCI_ANY_ID
 556         },
 557         {
 558                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 559                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF,
 560                 .subsystem_vendor_id = PCI_ANY_ID,
 561                 .subsystem_device_id = PCI_ANY_ID
 562         },
 563         {
 564                 .vendor_id = 0
 565         }
 566 };
 567
 568 static struct eth_driver mlx5_driver = {
 569         .pci_drv = {
 570                 .name = MLX5_DRIVER_NAME,
 571                 .id_table = mlx5_pci_id_map,
 572                 .devinit = mlx5_pci_devinit,
 573                 .drv_flags = RTE_PCI_DRV_INTR_LSC,
 574         },
 575         .dev_private_size = sizeof(struct priv)
 576 };
 577
 578 /**
 579  * Driver initialization routine.
 580  */
 581 static int
 582 rte_mlx5_pmd_init(const char *name, const char *args)
 583 {
 584         (void)name;
 585         (void)args;
 586         /*
 587          * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
 588          * huge pages. Calling ibv_fork_init() during init allows
 589          * applications to use fork() safely for purposes other than
 590          * using this PMD, which is not supported in forked processes.
 591          */
 592         setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
 593         ibv_fork_init();
 594         rte_eal_pci_register(&mlx5_driver.pci_drv);
 595         return 0;
 596 }
 597
 598 static struct rte_driver rte_mlx5_driver = {
 599         .type = PMD_PDEV,
 600         .name = MLX5_DRIVER_NAME,
 601         .init = rte_mlx5_pmd_init,
 602 };
 603
 604 PMD_REGISTER_DRIVER(rte_mlx5_driver)