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  * Retrieve integer value from environment variable.
  72  *
  73  * @param[in] name
  74  *   Environment variable name.
  75  *
  76  * @return
  77  *   Integer value, 0 if the variable is not set.
  78  */
  79 int
  80 mlx5_getenv_int(const char *name)
  81 {
  82         const char *val = getenv(name);
  83
  84         if (val == NULL)
  85                 return 0;
  86         return atoi(val);
  87 }
  88
  89 /**
  90  * DPDK callback to close the device.
  91  *
  92  * Destroy all queues and objects, free memory.
  93  *
  94  * @param dev
  95  *   Pointer to Ethernet device structure.
  96  */
  97 static void
  98 mlx5_dev_close(struct rte_eth_dev *dev)
  99 {
 100         struct priv *priv = mlx5_get_priv(dev);
 101         void *tmp;
 102         unsigned int i;
 103
 104         priv_lock(priv);
 105         DEBUG("%p: closing device \"%s\"",
 106               (void *)dev,
 107               ((priv->ctx != NULL) ? priv->ctx->device->name : ""));
 108         /* In case mlx5_dev_stop() has not been called. */
 109         priv_dev_interrupt_handler_uninstall(priv, dev);
 110         priv_special_flow_disable_all(priv);
 111         priv_mac_addrs_disable(priv);
 112         priv_destroy_hash_rxqs(priv);
 113
 114         /* Remove flow director elements. */
 115         priv_fdir_disable(priv);
 116         priv_fdir_delete_filters_list(priv);
 117
 118         /* Prevent crashes when queues are still in use. */
 119         dev->rx_pkt_burst = removed_rx_burst;
 120         dev->tx_pkt_burst = removed_tx_burst;
 121         if (priv->rxqs != NULL) {
 122                 /* XXX race condition if mlx5_rx_burst() is still running. */
 123                 usleep(1000);
 124                 for (i = 0; (i != priv->rxqs_n); ++i) {
 125                         tmp = (*priv->rxqs)[i];
 126                         if (tmp == NULL)
 127                                 continue;
 128                         (*priv->rxqs)[i] = NULL;
 129                         rxq_cleanup(tmp);
 130                         rte_free(tmp);
 131                 }
 132                 priv->rxqs_n = 0;
 133                 priv->rxqs = NULL;
 134         }
 135         if (priv->txqs != NULL) {
 136                 /* XXX race condition if mlx5_tx_burst() is still running. */
 137                 usleep(1000);
 138                 for (i = 0; (i != priv->txqs_n); ++i) {
 139                         tmp = (*priv->txqs)[i];
 140                         if (tmp == NULL)
 141                                 continue;
 142                         (*priv->txqs)[i] = NULL;
 143                         txq_cleanup(tmp);
 144                         rte_free(tmp);
 145                 }
 146                 priv->txqs_n = 0;
 147                 priv->txqs = NULL;
 148         }
 149         if (priv->pd != NULL) {
 150                 assert(priv->ctx != NULL);
 151                 claim_zero(ibv_dealloc_pd(priv->pd));
 152                 claim_zero(ibv_close_device(priv->ctx));
 153         } else
 154                 assert(priv->ctx == NULL);
 155         if (priv->rss_conf != NULL) {
 156                 for (i = 0; (i != hash_rxq_init_n); ++i)
 157                         rte_free((*priv->rss_conf)[i]);
 158                 rte_free(priv->rss_conf);
 159         }
 160         if (priv->reta_idx != NULL)
 161                 rte_free(priv->reta_idx);
 162         priv_unlock(priv);
 163         memset(priv, 0, sizeof(*priv));
 164 }
 165
 166 static const struct eth_dev_ops mlx5_dev_ops = {
 167         .dev_configure = mlx5_dev_configure,
 168         .dev_start = mlx5_dev_start,
 169         .dev_stop = mlx5_dev_stop,
 170         .dev_set_link_down = mlx5_set_link_down,
 171         .dev_set_link_up = mlx5_set_link_up,
 172         .dev_close = mlx5_dev_close,
 173         .promiscuous_enable = mlx5_promiscuous_enable,
 174         .promiscuous_disable = mlx5_promiscuous_disable,
 175         .allmulticast_enable = mlx5_allmulticast_enable,
 176         .allmulticast_disable = mlx5_allmulticast_disable,
 177         .link_update = mlx5_link_update,
 178         .stats_get = mlx5_stats_get,
 179         .stats_reset = mlx5_stats_reset,
 180         .dev_infos_get = mlx5_dev_infos_get,
 181         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
 182         .vlan_filter_set = mlx5_vlan_filter_set,
 183         .rx_queue_setup = mlx5_rx_queue_setup,
 184         .tx_queue_setup = mlx5_tx_queue_setup,
 185         .rx_queue_release = mlx5_rx_queue_release,
 186         .tx_queue_release = mlx5_tx_queue_release,
 187         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
 188         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
 189         .mac_addr_remove = mlx5_mac_addr_remove,
 190         .mac_addr_add = mlx5_mac_addr_add,
 191         .mac_addr_set = mlx5_mac_addr_set,
 192         .mtu_set = mlx5_dev_set_mtu,
 193 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 194         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
 195         .vlan_offload_set = mlx5_vlan_offload_set,
 196 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 197         .reta_update = mlx5_dev_rss_reta_update,
 198         .reta_query = mlx5_dev_rss_reta_query,
 199         .rss_hash_update = mlx5_rss_hash_update,
 200         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
 201 #ifdef MLX5_FDIR_SUPPORT
 202         .filter_ctrl = mlx5_dev_filter_ctrl,
 203 #endif /* MLX5_FDIR_SUPPORT */
 204 };
 205
 206 static struct {
 207         struct rte_pci_addr pci_addr; /* associated PCI address */
 208         uint32_t ports; /* physical ports bitfield. */
 209 } mlx5_dev[32];
 210
 211 /**
 212  * Get device index in mlx5_dev[] from PCI bus address.
 213  *
 214  * @param[in] pci_addr
 215  *   PCI bus address to look for.
 216  *
 217  * @return
 218  *   mlx5_dev[] index on success, -1 on failure.
 219  */
 220 static int
 221 mlx5_dev_idx(struct rte_pci_addr *pci_addr)
 222 {
 223         unsigned int i;
 224         int ret = -1;
 225
 226         assert(pci_addr != NULL);
 227         for (i = 0; (i != RTE_DIM(mlx5_dev)); ++i) {
 228                 if ((mlx5_dev[i].pci_addr.domain == pci_addr->domain) &&
 229                     (mlx5_dev[i].pci_addr.bus == pci_addr->bus) &&
 230                     (mlx5_dev[i].pci_addr.devid == pci_addr->devid) &&
 231                     (mlx5_dev[i].pci_addr.function == pci_addr->function))
 232                         return i;
 233                 if ((mlx5_dev[i].ports == 0) && (ret == -1))
 234                         ret = i;
 235         }
 236         return ret;
 237 }
 238
 239 static struct eth_driver mlx5_driver;
 240
 241 /**
 242  * DPDK callback to register a PCI device.
 243  *
 244  * This function creates an Ethernet device for each port of a given
 245  * PCI device.
 246  *
 247  * @param[in] pci_drv
 248  *   PCI driver structure (mlx5_driver).
 249  * @param[in] pci_dev
 250  *   PCI device information.
 251  *
 252  * @return
 253  *   0 on success, negative errno value on failure.
 254  */
 255 static int
 256 mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev)
 257 {
 258         struct ibv_device **list;
 259         struct ibv_device *ibv_dev;
 260         int err = 0;
 261         struct ibv_context *attr_ctx = NULL;
 262         struct ibv_device_attr device_attr;
 263         unsigned int vf;
 264         unsigned int mps;
 265         int idx;
 266         int i;
 267
 268         (void)pci_drv;
 269         assert(pci_drv == &mlx5_driver.pci_drv);
 270         /* Get mlx5_dev[] index. */
 271         idx = mlx5_dev_idx(&pci_dev->addr);
 272         if (idx == -1) {
 273                 ERROR("this driver cannot support any more adapters");
 274                 return -ENOMEM;
 275         }
 276         DEBUG("using driver device index %d", idx);
 277
 278         /* Save PCI address. */
 279         mlx5_dev[idx].pci_addr = pci_dev->addr;
 280         list = ibv_get_device_list(&i);
 281         if (list == NULL) {
 282                 assert(errno);
 283                 if (errno == ENOSYS) {
 284                         WARN("cannot list devices, is ib_uverbs loaded?");
 285                         return 0;
 286                 }
 287                 return -errno;
 288         }
 289         assert(i >= 0);
 290         /*
 291          * For each listed device, check related sysfs entry against
 292          * the provided PCI ID.
 293          */
 294         while (i != 0) {
 295                 struct rte_pci_addr pci_addr;
 296
 297                 --i;
 298                 DEBUG("checking device \"%s\"", list[i]->name);
 299                 if (mlx5_ibv_device_to_pci_addr(list[i], &pci_addr))
 300                         continue;
 301                 if ((pci_dev->addr.domain != pci_addr.domain) ||
 302                     (pci_dev->addr.bus != pci_addr.bus) ||
 303                     (pci_dev->addr.devid != pci_addr.devid) ||
 304                     (pci_dev->addr.function != pci_addr.function))
 305                         continue;
 306                 vf = ((pci_dev->id.device_id ==
 307                        PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) ||
 308                       (pci_dev->id.device_id ==
 309                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF));
 310                 /* Multi-packet send is only supported by ConnectX-4 Lx PF. */
 311                 mps = (pci_dev->id.device_id ==
 312                        PCI_DEVICE_ID_MELLANOX_CONNECTX4LX);
 313                 INFO("PCI information matches, using device \"%s\" (VF: %s,"
 314                      " MPS: %s)",
 315                      list[i]->name,
 316                      vf ? "true" : "false",
 317                      mps ? "true" : "false");
 318                 attr_ctx = ibv_open_device(list[i]);
 319                 err = errno;
 320                 break;
 321         }
 322         if (attr_ctx == NULL) {
 323                 ibv_free_device_list(list);
 324                 switch (err) {
 325                 case 0:
 326                         WARN("cannot access device, is mlx5_ib loaded?");
 327                         return 0;
 328                 case EINVAL:
 329                         WARN("cannot use device, are drivers up to date?");
 330                         return 0;
 331                 }
 332                 assert(err > 0);
 333                 return -err;
 334         }
 335         ibv_dev = list[i];
 336
 337         DEBUG("device opened");
 338         if (ibv_query_device(attr_ctx, &device_attr))
 339                 goto error;
 340         INFO("%u port(s) detected", device_attr.phys_port_cnt);
 341
 342         for (i = 0; i < device_attr.phys_port_cnt; i++) {
 343                 uint32_t port = i + 1; /* ports are indexed from one */
 344                 uint32_t test = (1 << i);
 345                 struct ibv_context *ctx = NULL;
 346                 struct ibv_port_attr port_attr;
 347                 struct ibv_pd *pd = NULL;
 348                 struct priv *priv = NULL;
 349                 struct rte_eth_dev *eth_dev;
 350 #ifdef HAVE_EXP_QUERY_DEVICE
 351                 struct ibv_exp_device_attr exp_device_attr;
 352 #endif /* HAVE_EXP_QUERY_DEVICE */
 353                 struct ether_addr mac;
 354
 355 #ifdef HAVE_EXP_QUERY_DEVICE
 356                 exp_device_attr.comp_mask =
 357                         IBV_EXP_DEVICE_ATTR_EXP_CAP_FLAGS |
 358                         IBV_EXP_DEVICE_ATTR_RX_HASH |
 359 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 360                         IBV_EXP_DEVICE_ATTR_VLAN_OFFLOADS |
 361 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 362 #ifdef HAVE_VERBS_RX_END_PADDING
 363                         IBV_EXP_DEVICE_ATTR_RX_PAD_END_ALIGN |
 364 #endif /* HAVE_VERBS_RX_END_PADDING */
 365                         0;
 366 #endif /* HAVE_EXP_QUERY_DEVICE */
 367
 368                 DEBUG("using port %u (%08" PRIx32 ")", port, test);
 369
 370                 ctx = ibv_open_device(ibv_dev);
 371                 if (ctx == NULL)
 372                         goto port_error;
 373
 374                 /* Check port status. */
 375                 err = ibv_query_port(ctx, port, &port_attr);
 376                 if (err) {
 377                         ERROR("port query failed: %s", strerror(err));
 378                         goto port_error;
 379                 }
 380
 381                 if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
 382                         ERROR("port %d is not configured in Ethernet mode",
 383                               port);
 384                         goto port_error;
 385                 }
 386
 387                 if (port_attr.state != IBV_PORT_ACTIVE)
 388                         DEBUG("port %d is not active: \"%s\" (%d)",
 389                               port, ibv_port_state_str(port_attr.state),
 390                               port_attr.state);
 391
 392                 /* Allocate protection domain. */
 393                 pd = ibv_alloc_pd(ctx);
 394                 if (pd == NULL) {
 395                         ERROR("PD allocation failure");
 396                         err = ENOMEM;
 397                         goto port_error;
 398                 }
 399
 400                 mlx5_dev[idx].ports |= test;
 401
 402                 /* from rte_ethdev.c */
 403                 priv = rte_zmalloc("ethdev private structure",
 404                                    sizeof(*priv),
 405                                    RTE_CACHE_LINE_SIZE);
 406                 if (priv == NULL) {
 407                         ERROR("priv allocation failure");
 408                         err = ENOMEM;
 409                         goto port_error;
 410                 }
 411
 412                 priv->ctx = ctx;
 413                 priv->device_attr = device_attr;
 414                 priv->port = port;
 415                 priv->pd = pd;
 416                 priv->mtu = ETHER_MTU;
 417 #ifdef HAVE_EXP_QUERY_DEVICE
 418                 if (ibv_exp_query_device(ctx, &exp_device_attr)) {
 419                         ERROR("ibv_exp_query_device() failed");
 420                         goto port_error;
 421                 }
 422
 423                 priv->hw_csum =
 424                         ((exp_device_attr.exp_device_cap_flags &
 425                           IBV_EXP_DEVICE_RX_CSUM_TCP_UDP_PKT) &&
 426                          (exp_device_attr.exp_device_cap_flags &
 427                           IBV_EXP_DEVICE_RX_CSUM_IP_PKT));
 428                 DEBUG("checksum offloading is %ssupported",
 429                       (priv->hw_csum ? "" : "not "));
 430
 431                 priv->hw_csum_l2tun = !!(exp_device_attr.exp_device_cap_flags &
 432                                          IBV_EXP_DEVICE_VXLAN_SUPPORT);
 433                 DEBUG("L2 tunnel checksum offloads are %ssupported",
 434                       (priv->hw_csum_l2tun ? "" : "not "));
 435
 436                 priv->ind_table_max_size = exp_device_attr.rx_hash_caps.max_rwq_indirection_table_size;
 437                 /* Remove this check once DPDK supports larger/variable
 438                  * indirection tables. */
 439                 if (priv->ind_table_max_size > (unsigned int)RSS_INDIRECTION_TABLE_SIZE)
 440                         priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 441                 DEBUG("maximum RX indirection table size is %u",
 442                       priv->ind_table_max_size);
 443 #ifdef HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS
 444                 priv->hw_vlan_strip = !!(exp_device_attr.wq_vlan_offloads_cap &
 445                                          IBV_EXP_RECEIVE_WQ_CVLAN_STRIP);
 446 #endif /* HAVE_EXP_DEVICE_ATTR_VLAN_OFFLOADS */
 447                 DEBUG("VLAN stripping is %ssupported",
 448                       (priv->hw_vlan_strip ? "" : "not "));
 449
 450 #ifdef HAVE_VERBS_FCS
 451                 priv->hw_fcs_strip = !!(exp_device_attr.exp_device_cap_flags &
 452                                         IBV_EXP_DEVICE_SCATTER_FCS);
 453 #endif /* HAVE_VERBS_FCS */
 454                 DEBUG("FCS stripping configuration is %ssupported",
 455                       (priv->hw_fcs_strip ? "" : "not "));
 456
 457 #ifdef HAVE_VERBS_RX_END_PADDING
 458                 priv->hw_padding = !!exp_device_attr.rx_pad_end_addr_align;
 459 #endif /* HAVE_VERBS_RX_END_PADDING */
 460                 DEBUG("hardware RX end alignment padding is %ssupported",
 461                       (priv->hw_padding ? "" : "not "));
 462
 463 #else /* HAVE_EXP_QUERY_DEVICE */
 464                 priv->ind_table_max_size = RSS_INDIRECTION_TABLE_SIZE;
 465 #endif /* HAVE_EXP_QUERY_DEVICE */
 466
 467                 priv->vf = vf;
 468                 priv->mps = mps;
 469                 /* Allocate and register default RSS hash keys. */
 470                 priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n,
 471                                             sizeof((*priv->rss_conf)[0]), 0);
 472                 if (priv->rss_conf == NULL) {
 473                         err = ENOMEM;
 474                         goto port_error;
 475                 }
 476                 err = rss_hash_rss_conf_new_key(priv,
 477                                                 rss_hash_default_key,
 478                                                 rss_hash_default_key_len,
 479                                                 ETH_RSS_PROTO_MASK);
 480                 if (err)
 481                         goto port_error;
 482                 /* Configure the first MAC address by default. */
 483                 if (priv_get_mac(priv, &mac.addr_bytes)) {
 484                         ERROR("cannot get MAC address, is mlx5_en loaded?"
 485                               " (errno: %s)", strerror(errno));
 486                         goto port_error;
 487                 }
 488                 INFO("port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
 489                      priv->port,
 490                      mac.addr_bytes[0], mac.addr_bytes[1],
 491                      mac.addr_bytes[2], mac.addr_bytes[3],
 492                      mac.addr_bytes[4], mac.addr_bytes[5]);
 493                 /* Register MAC address. */
 494                 claim_zero(priv_mac_addr_add(priv, 0,
 495                                              (const uint8_t (*)[ETHER_ADDR_LEN])
 496                                              mac.addr_bytes));
 497                 /* Initialize FD filters list. */
 498                 err = fdir_init_filters_list(priv);
 499                 if (err)
 500                         goto port_error;
 501 #ifndef NDEBUG
 502                 {
 503                         char ifname[IF_NAMESIZE];
 504
 505                         if (priv_get_ifname(priv, &ifname) == 0)
 506                                 DEBUG("port %u ifname is \"%s\"",
 507                                       priv->port, ifname);
 508                         else
 509                                 DEBUG("port %u ifname is unknown", priv->port);
 510                 }
 511 #endif
 512                 /* Get actual MTU if possible. */
 513                 priv_get_mtu(priv, &priv->mtu);
 514                 DEBUG("port %u MTU is %u", priv->port, priv->mtu);
 515
 516                 /* from rte_ethdev.c */
 517                 {
 518                         char name[RTE_ETH_NAME_MAX_LEN];
 519
 520                         snprintf(name, sizeof(name), "%s port %u",
 521                                  ibv_get_device_name(ibv_dev), port);
 522                         eth_dev = rte_eth_dev_allocate(name, RTE_ETH_DEV_PCI);
 523                 }
 524                 if (eth_dev == NULL) {
 525                         ERROR("can not allocate rte ethdev");
 526                         err = ENOMEM;
 527                         goto port_error;
 528                 }
 529
 530                 /* Secondary processes have to use local storage for their
 531                  * private data as well as a copy of eth_dev->data, but this
 532                  * pointer must not be modified before burst functions are
 533                  * actually called. */
 534                 if (mlx5_is_secondary()) {
 535                         struct mlx5_secondary_data *sd =
 536                                 &mlx5_secondary_data[eth_dev->data->port_id];
 537                         sd->primary_priv = eth_dev->data->dev_private;
 538                         if (sd->primary_priv == NULL) {
 539                                 ERROR("no private data for port %u",
 540                                                 eth_dev->data->port_id);
 541                                 err = EINVAL;
 542                                 goto port_error;
 543                         }
 544                         sd->shared_dev_data = eth_dev->data;
 545                         rte_spinlock_init(&sd->lock);
 546                         memcpy(sd->data.name, sd->shared_dev_data->name,
 547                                    sizeof(sd->data.name));
 548                         sd->data.dev_private = priv;
 549                         sd->data.rx_mbuf_alloc_failed = 0;
 550                         sd->data.mtu = ETHER_MTU;
 551                         sd->data.port_id = sd->shared_dev_data->port_id;
 552                         sd->data.mac_addrs = priv->mac;
 553                         eth_dev->tx_pkt_burst = mlx5_tx_burst_secondary_setup;
 554                         eth_dev->rx_pkt_burst = mlx5_rx_burst_secondary_setup;
 555                 } else {
 556                         eth_dev->data->dev_private = priv;
 557                         eth_dev->data->rx_mbuf_alloc_failed = 0;
 558                         eth_dev->data->mtu = ETHER_MTU;
 559                         eth_dev->data->mac_addrs = priv->mac;
 560                 }
 561
 562                 eth_dev->pci_dev = pci_dev;
 563                 rte_eth_copy_pci_info(eth_dev, pci_dev);
 564                 eth_dev->driver = &mlx5_driver;
 565                 priv->dev = eth_dev;
 566                 eth_dev->dev_ops = &mlx5_dev_ops;
 567
 568                 TAILQ_INIT(&eth_dev->link_intr_cbs);
 569
 570                 /* Bring Ethernet device up. */
 571                 DEBUG("forcing Ethernet interface up");
 572                 priv_set_flags(priv, ~IFF_UP, IFF_UP);
 573                 continue;
 574
 575 port_error:
 576                 if (priv) {
 577                         rte_free(priv->rss_conf);
 578                         rte_free(priv);
 579                 }
 580                 if (pd)
 581                         claim_zero(ibv_dealloc_pd(pd));
 582                 if (ctx)
 583                         claim_zero(ibv_close_device(ctx));
 584                 break;
 585         }
 586
 587         /*
 588          * XXX if something went wrong in the loop above, there is a resource
 589          * leak (ctx, pd, priv, dpdk ethdev) but we can do nothing about it as
 590          * long as the dpdk does not provide a way to deallocate a ethdev and a
 591          * way to enumerate the registered ethdevs to free the previous ones.
 592          */
 593
 594         /* no port found, complain */
 595         if (!mlx5_dev[idx].ports) {
 596                 err = ENODEV;
 597                 goto error;
 598         }
 599
 600 error:
 601         if (attr_ctx)
 602                 claim_zero(ibv_close_device(attr_ctx));
 603         if (list)
 604                 ibv_free_device_list(list);
 605         assert(err >= 0);
 606         return -err;
 607 }
 608
 609 static const struct rte_pci_id mlx5_pci_id_map[] = {
 610         {
 611                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 612                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4,
 613                 .subsystem_vendor_id = PCI_ANY_ID,
 614                 .subsystem_device_id = PCI_ANY_ID
 615         },
 616         {
 617                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 618                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4VF,
 619                 .subsystem_vendor_id = PCI_ANY_ID,
 620                 .subsystem_device_id = PCI_ANY_ID
 621         },
 622         {
 623                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 624                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LX,
 625                 .subsystem_vendor_id = PCI_ANY_ID,
 626                 .subsystem_device_id = PCI_ANY_ID
 627         },
 628         {
 629                 .vendor_id = PCI_VENDOR_ID_MELLANOX,
 630                 .device_id = PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF,
 631                 .subsystem_vendor_id = PCI_ANY_ID,
 632                 .subsystem_device_id = PCI_ANY_ID
 633         },
 634         {
 635                 .vendor_id = 0
 636         }
 637 };
 638
 639 static struct eth_driver mlx5_driver = {
 640         .pci_drv = {
 641                 .name = MLX5_DRIVER_NAME,
 642                 .id_table = mlx5_pci_id_map,
 643                 .devinit = mlx5_pci_devinit,
 644                 .drv_flags = RTE_PCI_DRV_INTR_LSC,
 645         },
 646         .dev_private_size = sizeof(struct priv)
 647 };
 648
 649 /**
 650  * Driver initialization routine.
 651  */
 652 static int
 653 rte_mlx5_pmd_init(const char *name, const char *args)
 654 {
 655         (void)name;
 656         (void)args;
 657         /*
 658          * RDMAV_HUGEPAGES_SAFE tells ibv_fork_init() we intend to use
 659          * huge pages. Calling ibv_fork_init() during init allows
 660          * applications to use fork() safely for purposes other than
 661          * using this PMD, which is not supported in forked processes.
 662          */
 663         setenv("RDMAV_HUGEPAGES_SAFE", "1", 1);
 664         ibv_fork_init();
 665         rte_eal_pci_register(&mlx5_driver.pci_drv);
 666         return 0;
 667 }
 668
 669 static struct rte_driver rte_mlx5_driver = {
 670         .type = PMD_PDEV,
 671         .name = MLX5_DRIVER_NAME,
 672         .init = rte_mlx5_pmd_init,
 673 };
 674
 675 PMD_REGISTER_DRIVER(rte_mlx5_driver)