drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox Technologies, Ltd
   4  */
   5
   6 #define _GNU_SOURCE
   7
   8 #include <stddef.h>
   9 #include <assert.h>
  10 #include <inttypes.h>
  11 #include <unistd.h>
  12 #include <stdint.h>
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include <stdlib.h>
  16 #include <errno.h>
  17 #include <dirent.h>
  18 #include <net/if.h>
  19 #include <sys/ioctl.h>
  20 #include <sys/socket.h>
  21 #include <netinet/in.h>
  22 #include <linux/ethtool.h>
  23 #include <linux/sockios.h>
  24 #include <fcntl.h>
  25 #include <stdalign.h>
  26 #include <sys/un.h>
  27 #include <time.h>
  28
  29 #include <rte_atomic.h>
  30 #include <rte_ethdev_driver.h>
  31 #include <rte_bus_pci.h>
  32 #include <rte_mbuf.h>
  33 #include <rte_common.h>
  34 #include <rte_interrupts.h>
  35 #include <rte_malloc.h>
  36 #include <rte_string_fns.h>
  37
  38 #include "mlx5.h"
  39 #include "mlx5_glue.h"
  40 #include "mlx5_rxtx.h"
  41 #include "mlx5_utils.h"
  42
  43 /* Add defines in case the running kernel is not the same as user headers. */
  44 #ifndef ETHTOOL_GLINKSETTINGS
  45 struct ethtool_link_settings {
  46         uint32_t cmd;
  47         uint32_t speed;
  48         uint8_t duplex;
  49         uint8_t port;
  50         uint8_t phy_address;
  51         uint8_t autoneg;
  52         uint8_t mdio_support;
  53         uint8_t eth_to_mdix;
  54         uint8_t eth_tp_mdix_ctrl;
  55         int8_t link_mode_masks_nwords;
  56         uint32_t reserved[8];
  57         uint32_t link_mode_masks[];
  58 };
  59
  60 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  61 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  62 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  63 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  64 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  65 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  66 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  67 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  68 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  69 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  70 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  71 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  72 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  73 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
  74 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
  75 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
  76 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
  77 #endif
  78 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
  79 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
  80 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
  81 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
  82 #endif
  83 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
  84 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
  85 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
  86 #endif
  87 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
  88 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
  89 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
  90 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
  91 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
  92 #endif
  93
  94 /**
  95  * Get interface name from private structure.
  96  *
  97  * @param[in] dev
  98  *   Pointer to Ethernet device.
  99  * @param[out] ifname
 100  *   Interface name output buffer.
 101  *
 102  * @return
 103  *   0 on success, a negative errno value otherwise and rte_errno is set.
 104  */
 105 int
 106 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 107 {
 108         struct priv *priv = dev->data->dev_private;
 109         DIR *dir;
 110         struct dirent *dent;
 111         unsigned int dev_type = 0;
 112         unsigned int dev_port_prev = ~0u;
 113         char match[IF_NAMESIZE] = "";
 114
 115         {
 116                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 117
 118                 dir = opendir(path);
 119                 if (dir == NULL) {
 120                         rte_errno = errno;
 121                         return -rte_errno;
 122                 }
 123         }
 124         while ((dent = readdir(dir)) != NULL) {
 125                 char *name = dent->d_name;
 126                 FILE *file;
 127                 unsigned int dev_port;
 128                 int r;
 129
 130                 if ((name[0] == '.') &&
 131                     ((name[1] == '\0') ||
 132                      ((name[1] == '.') && (name[2] == '\0'))))
 133                         continue;
 134
 135                 MKSTR(path, "%s/device/net/%s/%s",
 136                       priv->ibdev_path, name,
 137                       (dev_type ? "dev_id" : "dev_port"));
 138
 139                 file = fopen(path, "rb");
 140                 if (file == NULL) {
 141                         if (errno != ENOENT)
 142                                 continue;
 143                         /*
 144                          * Switch to dev_id when dev_port does not exist as
 145                          * is the case with Linux kernel versions < 3.15.
 146                          */
 147 try_dev_id:
 148                         match[0] = '\0';
 149                         if (dev_type)
 150                                 break;
 151                         dev_type = 1;
 152                         dev_port_prev = ~0u;
 153                         rewinddir(dir);
 154                         continue;
 155                 }
 156                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 157                 fclose(file);
 158                 if (r != 1)
 159                         continue;
 160                 /*
 161                  * Switch to dev_id when dev_port returns the same value for
 162                  * all ports. May happen when using a MOFED release older than
 163                  * 3.0 with a Linux kernel >= 3.15.
 164                  */
 165                 if (dev_port == dev_port_prev)
 166                         goto try_dev_id;
 167                 dev_port_prev = dev_port;
 168                 if (dev_port == (priv->port - 1u))
 169                         strlcpy(match, name, sizeof(match));
 170         }
 171         closedir(dir);
 172         if (match[0] == '\0') {
 173                 rte_errno = ENOENT;
 174                 return -rte_errno;
 175         }
 176         strncpy(*ifname, match, sizeof(*ifname));
 177         return 0;
 178 }
 179
 180 /**
 181  * Get the interface index from device name.
 182  *
 183  * @param[in] dev
 184  *   Pointer to Ethernet device.
 185  *
 186  * @return
 187  *   Interface index on success, a negative errno value otherwise and
 188  *   rte_errno is set.
 189  */
 190 int
 191 mlx5_ifindex(const struct rte_eth_dev *dev)
 192 {
 193         char ifname[IF_NAMESIZE];
 194         int ret;
 195
 196         ret = mlx5_get_ifname(dev, &ifname);
 197         if (ret)
 198                 return ret;
 199         ret = if_nametoindex(ifname);
 200         if (ret == -1) {
 201                 rte_errno = errno;
 202                 return -rte_errno;
 203         }
 204         return ret;
 205 }
 206
 207 /**
 208  * Perform ifreq ioctl() on associated Ethernet device.
 209  *
 210  * @param[in] dev
 211  *   Pointer to Ethernet device.
 212  * @param req
 213  *   Request number to pass to ioctl().
 214  * @param[out] ifr
 215  *   Interface request structure output buffer.
 216  *
 217  * @return
 218  *   0 on success, a negative errno value otherwise and rte_errno is set.
 219  */
 220 int
 221 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 222 {
 223         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 224         int ret = 0;
 225
 226         if (sock == -1) {
 227                 rte_errno = errno;
 228                 return -rte_errno;
 229         }
 230         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 231         if (ret)
 232                 goto error;
 233         ret = ioctl(sock, req, ifr);
 234         if (ret == -1) {
 235                 rte_errno = errno;
 236                 goto error;
 237         }
 238         close(sock);
 239         return 0;
 240 error:
 241         close(sock);
 242         return -rte_errno;
 243 }
 244
 245 /**
 246  * Get device MTU.
 247  *
 248  * @param dev
 249  *   Pointer to Ethernet device.
 250  * @param[out] mtu
 251  *   MTU value output buffer.
 252  *
 253  * @return
 254  *   0 on success, a negative errno value otherwise and rte_errno is set.
 255  */
 256 int
 257 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 258 {
 259         struct ifreq request;
 260         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 261
 262         if (ret)
 263                 return ret;
 264         *mtu = request.ifr_mtu;
 265         return 0;
 266 }
 267
 268 /**
 269  * Set device MTU.
 270  *
 271  * @param dev
 272  *   Pointer to Ethernet device.
 273  * @param mtu
 274  *   MTU value to set.
 275  *
 276  * @return
 277  *   0 on success, a negative errno value otherwise and rte_errno is set.
 278  */
 279 static int
 280 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 281 {
 282         struct ifreq request = { .ifr_mtu = mtu, };
 283
 284         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 285 }
 286
 287 /**
 288  * Set device flags.
 289  *
 290  * @param dev
 291  *   Pointer to Ethernet device.
 292  * @param keep
 293  *   Bitmask for flags that must remain untouched.
 294  * @param flags
 295  *   Bitmask for flags to modify.
 296  *
 297  * @return
 298  *   0 on success, a negative errno value otherwise and rte_errno is set.
 299  */
 300 int
 301 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 302 {
 303         struct ifreq request;
 304         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 305
 306         if (ret)
 307                 return ret;
 308         request.ifr_flags &= keep;
 309         request.ifr_flags |= flags & ~keep;
 310         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 311 }
 312
 313 /**
 314  * DPDK callback for Ethernet device configuration.
 315  *
 316  * @param dev
 317  *   Pointer to Ethernet device structure.
 318  *
 319  * @return
 320  *   0 on success, a negative errno value otherwise and rte_errno is set.
 321  */
 322 int
 323 mlx5_dev_configure(struct rte_eth_dev *dev)
 324 {
 325         struct priv *priv = dev->data->dev_private;
 326         unsigned int rxqs_n = dev->data->nb_rx_queues;
 327         unsigned int txqs_n = dev->data->nb_tx_queues;
 328         unsigned int i;
 329         unsigned int j;
 330         unsigned int reta_idx_n;
 331         const uint8_t use_app_rss_key =
 332                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 333         uint64_t supp_tx_offloads = mlx5_get_tx_port_offloads(dev);
 334         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 335         uint64_t supp_rx_offloads =
 336                 (mlx5_get_rx_port_offloads() |
 337                  mlx5_get_rx_queue_offloads(dev));
 338         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 339         int ret = 0;
 340
 341         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 342                 DRV_LOG(ERR,
 343                         "port %u some Tx offloads are not supported requested"
 344                         " 0x%" PRIx64 " supported 0x%" PRIx64,
 345                         dev->data->port_id, tx_offloads, supp_tx_offloads);
 346                 rte_errno = ENOTSUP;
 347                 return -rte_errno;
 348         }
 349         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 350                 DRV_LOG(ERR,
 351                         "port %u some Rx offloads are not supported requested"
 352                         " 0x%" PRIx64 " supported 0x%" PRIx64,
 353                         dev->data->port_id, rx_offloads, supp_rx_offloads);
 354                 rte_errno = ENOTSUP;
 355                 return -rte_errno;
 356         }
 357         if (use_app_rss_key &&
 358             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 359              rss_hash_default_key_len)) {
 360                 DRV_LOG(ERR, "port %u RSS key len must be %zu Bytes long",
 361                         dev->data->port_id, rss_hash_default_key_len);
 362                 rte_errno = EINVAL;
 363                 return -rte_errno;
 364         }
 365         priv->rss_conf.rss_key =
 366                 rte_realloc(priv->rss_conf.rss_key,
 367                             rss_hash_default_key_len, 0);
 368         if (!priv->rss_conf.rss_key) {
 369                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 370                         dev->data->port_id, rxqs_n);
 371                 rte_errno = ENOMEM;
 372                 return -rte_errno;
 373         }
 374         memcpy(priv->rss_conf.rss_key,
 375                use_app_rss_key ?
 376                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 377                rss_hash_default_key,
 378                rss_hash_default_key_len);
 379         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 380         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 381         priv->rxqs = (void *)dev->data->rx_queues;
 382         priv->txqs = (void *)dev->data->tx_queues;
 383         if (txqs_n != priv->txqs_n) {
 384                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 385                         dev->data->port_id, priv->txqs_n, txqs_n);
 386                 priv->txqs_n = txqs_n;
 387         }
 388         if (rxqs_n > priv->config.ind_table_max_size) {
 389                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 390                         dev->data->port_id, rxqs_n);
 391                 rte_errno = EINVAL;
 392                 return -rte_errno;
 393         }
 394         if (rxqs_n == priv->rxqs_n)
 395                 return 0;
 396         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 397                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 398         priv->rxqs_n = rxqs_n;
 399         /* If the requested number of RX queues is not a power of two, use the
 400          * maximum indirection table size for better balancing.
 401          * The result is always rounded to the next power of two. */
 402         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 403                                      priv->config.ind_table_max_size :
 404                                      rxqs_n));
 405         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 406         if (ret)
 407                 return ret;
 408         /* When the number of RX queues is not a power of two, the remaining
 409          * table entries are padded with reused WQs and hashes are not spread
 410          * uniformly. */
 411         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 412                 (*priv->reta_idx)[i] = j;
 413                 if (++j == rxqs_n)
 414                         j = 0;
 415         }
 416         return 0;
 417 }
 418
 419 /**
 420  * Sets default tuning parameters.
 421  *
 422  * @param dev
 423  *   Pointer to Ethernet device.
 424  * @param[out] info
 425  *   Info structure output buffer.
 426  */
 427 static void
 428 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 429 {
 430         struct priv *priv = dev->data->dev_private;
 431
 432         /* Minimum CPU utilization. */
 433         info->default_rxportconf.ring_size = 256;
 434         info->default_txportconf.ring_size = 256;
 435         info->default_rxportconf.burst_size = 64;
 436         info->default_txportconf.burst_size = 64;
 437         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 438                 info->default_rxportconf.nb_queues = 16;
 439                 info->default_txportconf.nb_queues = 16;
 440                 if (dev->data->nb_rx_queues > 2 ||
 441                     dev->data->nb_tx_queues > 2) {
 442                         /* Max Throughput. */
 443                         info->default_rxportconf.ring_size = 2048;
 444                         info->default_txportconf.ring_size = 2048;
 445                 }
 446         } else {
 447                 info->default_rxportconf.nb_queues = 8;
 448                 info->default_txportconf.nb_queues = 8;
 449                 if (dev->data->nb_rx_queues > 2 ||
 450                     dev->data->nb_tx_queues > 2) {
 451                         /* Max Throughput. */
 452                         info->default_rxportconf.ring_size = 4096;
 453                         info->default_txportconf.ring_size = 4096;
 454                 }
 455         }
 456 }
 457
 458 /**
 459  * DPDK callback to get information about the device.
 460  *
 461  * @param dev
 462  *   Pointer to Ethernet device structure.
 463  * @param[out] info
 464  *   Info structure output buffer.
 465  */
 466 void
 467 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 468 {
 469         struct priv *priv = dev->data->dev_private;
 470         struct mlx5_dev_config *config = &priv->config;
 471         unsigned int max;
 472         char ifname[IF_NAMESIZE];
 473
 474         /* FIXME: we should ask the device for these values. */
 475         info->min_rx_bufsize = 32;
 476         info->max_rx_pktlen = 65536;
 477         /*
 478          * Since we need one CQ per QP, the limit is the minimum number
 479          * between the two values.
 480          */
 481         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 482                       priv->device_attr.orig_attr.max_qp);
 483         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 484         if (max >= 65535)
 485                 max = 65535;
 486         info->max_rx_queues = max;
 487         info->max_tx_queues = max;
 488         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 489         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 490         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 491                                  info->rx_queue_offload_capa);
 492         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 493         if (mlx5_get_ifname(dev, &ifname) == 0)
 494                 info->if_index = if_nametoindex(ifname);
 495         info->reta_size = priv->reta_idx_n ?
 496                 priv->reta_idx_n : config->ind_table_max_size;
 497         info->hash_key_size = rss_hash_default_key_len;
 498         info->speed_capa = priv->link_speed_capa;
 499         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 500         mlx5_set_default_params(dev, info);
 501 }
 502
 503 /**
 504  * Get supported packet types.
 505  *
 506  * @param dev
 507  *   Pointer to Ethernet device structure.
 508  *
 509  * @return
 510  *   A pointer to the supported Packet types array.
 511  */
 512 const uint32_t *
 513 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 514 {
 515         static const uint32_t ptypes[] = {
 516                 /* refers to rxq_cq_to_pkt_type() */
 517                 RTE_PTYPE_L2_ETHER,
 518                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 519                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 520                 RTE_PTYPE_L4_NONFRAG,
 521                 RTE_PTYPE_L4_FRAG,
 522                 RTE_PTYPE_L4_TCP,
 523                 RTE_PTYPE_L4_UDP,
 524                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 525                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 526                 RTE_PTYPE_INNER_L4_NONFRAG,
 527                 RTE_PTYPE_INNER_L4_FRAG,
 528                 RTE_PTYPE_INNER_L4_TCP,
 529                 RTE_PTYPE_INNER_L4_UDP,
 530                 RTE_PTYPE_UNKNOWN
 531         };
 532
 533         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 534             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 535                 return ptypes;
 536         return NULL;
 537 }
 538
 539 /**
 540  * DPDK callback to retrieve physical link information.
 541  *
 542  * @param dev
 543  *   Pointer to Ethernet device structure.
 544  * @param[out] link
 545  *   Storage for current link status.
 546  *
 547  * @return
 548  *   0 on success, a negative errno value otherwise and rte_errno is set.
 549  */
 550 static int
 551 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 552                                struct rte_eth_link *link)
 553 {
 554         struct priv *priv = dev->data->dev_private;
 555         struct ethtool_cmd edata = {
 556                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 557         };
 558         struct ifreq ifr;
 559         struct rte_eth_link dev_link;
 560         int link_speed = 0;
 561         int ret;
 562
 563         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 564         if (ret) {
 565                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 566                         dev->data->port_id, strerror(rte_errno));
 567                 return ret;
 568         }
 569         memset(&dev_link, 0, sizeof(dev_link));
 570         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 571                                 (ifr.ifr_flags & IFF_RUNNING));
 572         ifr.ifr_data = (void *)&edata;
 573         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 574         if (ret) {
 575                 DRV_LOG(WARNING,
 576                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 577                         dev->data->port_id, strerror(rte_errno));
 578                 return ret;
 579         }
 580         link_speed = ethtool_cmd_speed(&edata);
 581         if (link_speed == -1)
 582                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 583         else
 584                 dev_link.link_speed = link_speed;
 585         priv->link_speed_capa = 0;
 586         if (edata.supported & SUPPORTED_Autoneg)
 587                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 588         if (edata.supported & (SUPPORTED_1000baseT_Full |
 589                                SUPPORTED_1000baseKX_Full))
 590                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 591         if (edata.supported & SUPPORTED_10000baseKR_Full)
 592                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 593         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 594                                SUPPORTED_40000baseCR4_Full |
 595                                SUPPORTED_40000baseSR4_Full |
 596                                SUPPORTED_40000baseLR4_Full))
 597                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 598         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 599                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 600         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 601                         ETH_LINK_SPEED_FIXED);
 602         if ((dev_link.link_speed && !dev_link.link_status) ||
 603             (!dev_link.link_speed && dev_link.link_status)) {
 604                 rte_errno = EAGAIN;
 605                 return -rte_errno;
 606         }
 607         *link = dev_link;
 608         return 0;
 609 }
 610
 611 /**
 612  * Retrieve physical link information (unlocked version using new ioctl).
 613  *
 614  * @param dev
 615  *   Pointer to Ethernet device structure.
 616  * @param[out] link
 617  *   Storage for current link status.
 618  *
 619  * @return
 620  *   0 on success, a negative errno value otherwise and rte_errno is set.
 621  */
 622 static int
 623 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 624                              struct rte_eth_link *link)
 625
 626 {
 627         struct priv *priv = dev->data->dev_private;
 628         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 629         struct ifreq ifr;
 630         struct rte_eth_link dev_link;
 631         uint64_t sc;
 632         int ret;
 633
 634         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 635         if (ret) {
 636                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 637                         dev->data->port_id, strerror(rte_errno));
 638                 return ret;
 639         }
 640         memset(&dev_link, 0, sizeof(dev_link));
 641         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 642                                 (ifr.ifr_flags & IFF_RUNNING));
 643         ifr.ifr_data = (void *)&gcmd;
 644         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 645         if (ret) {
 646                 DRV_LOG(DEBUG,
 647                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 648                         " failed: %s",
 649                         dev->data->port_id, strerror(rte_errno));
 650                 return ret;
 651         }
 652         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 653
 654         alignas(struct ethtool_link_settings)
 655         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 656                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 657         struct ethtool_link_settings *ecmd = (void *)data;
 658
 659         *ecmd = gcmd;
 660         ifr.ifr_data = (void *)ecmd;
 661         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 662         if (ret) {
 663                 DRV_LOG(DEBUG,
 664                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 665                         " failed: %s",
 666                         dev->data->port_id, strerror(rte_errno));
 667                 return ret;
 668         }
 669         dev_link.link_speed = ecmd->speed;
 670         sc = ecmd->link_mode_masks[0] |
 671                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 672         priv->link_speed_capa = 0;
 673         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 674                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 675         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 676                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 677                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 678         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 679                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 680                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 681                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 682         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 683                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 684                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 685         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 686                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 687                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 688                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 689                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 690         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 691                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 692                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 693                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 694                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 695         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 696                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 697                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 698                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 699         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 700                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 701                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 702         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 703                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 704                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 705                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 706                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 707         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 708                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 709         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 710                                   ETH_LINK_SPEED_FIXED);
 711         if ((dev_link.link_speed && !dev_link.link_status) ||
 712             (!dev_link.link_speed && dev_link.link_status)) {
 713                 rte_errno = EAGAIN;
 714                 return -rte_errno;
 715         }
 716         *link = dev_link;
 717         return 0;
 718 }
 719
 720 /**
 721  * DPDK callback to retrieve physical link information.
 722  *
 723  * @param dev
 724  *   Pointer to Ethernet device structure.
 725  * @param wait_to_complete
 726  *   Wait for request completion.
 727  *
 728  * @return
 729  *   0 if link status was not updated, positive if it was, a negative errno
 730  *   value otherwise and rte_errno is set.
 731  */
 732 int
 733 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 734 {
 735         int ret;
 736         struct rte_eth_link dev_link;
 737         time_t start_time = time(NULL);
 738
 739         do {
 740                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
 741                 if (ret)
 742                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
 743                 if (ret == 0)
 744                         break;
 745                 /* Handle wait to complete situation. */
 746                 if (wait_to_complete && ret == -EAGAIN) {
 747                         if (abs((int)difftime(time(NULL), start_time)) <
 748                             MLX5_LINK_STATUS_TIMEOUT) {
 749                                 usleep(0);
 750                                 continue;
 751                         } else {
 752                                 rte_errno = EBUSY;
 753                                 return -rte_errno;
 754                         }
 755                 } else if (ret < 0) {
 756                         return ret;
 757                 }
 758         } while (wait_to_complete);
 759         ret = !!memcmp(&dev->data->dev_link, &dev_link,
 760                        sizeof(struct rte_eth_link));
 761         dev->data->dev_link = dev_link;
 762         return ret;
 763 }
 764
 765 /**
 766  * DPDK callback to change the MTU.
 767  *
 768  * @param dev
 769  *   Pointer to Ethernet device structure.
 770  * @param in_mtu
 771  *   New MTU.
 772  *
 773  * @return
 774  *   0 on success, a negative errno value otherwise and rte_errno is set.
 775  */
 776 int
 777 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 778 {
 779         struct priv *priv = dev->data->dev_private;
 780         uint16_t kern_mtu = 0;
 781         int ret;
 782
 783         ret = mlx5_get_mtu(dev, &kern_mtu);
 784         if (ret)
 785                 return ret;
 786         /* Set kernel interface MTU first. */
 787         ret = mlx5_set_mtu(dev, mtu);
 788         if (ret)
 789                 return ret;
 790         ret = mlx5_get_mtu(dev, &kern_mtu);
 791         if (ret)
 792                 return ret;
 793         if (kern_mtu == mtu) {
 794                 priv->mtu = mtu;
 795                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
 796                         dev->data->port_id, mtu);
 797                 return 0;
 798         }
 799         rte_errno = EAGAIN;
 800         return -rte_errno;
 801 }
 802
 803 /**
 804  * DPDK callback to get flow control status.
 805  *
 806  * @param dev
 807  *   Pointer to Ethernet device structure.
 808  * @param[out] fc_conf
 809  *   Flow control output buffer.
 810  *
 811  * @return
 812  *   0 on success, a negative errno value otherwise and rte_errno is set.
 813  */
 814 int
 815 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 816 {
 817         struct ifreq ifr;
 818         struct ethtool_pauseparam ethpause = {
 819                 .cmd = ETHTOOL_GPAUSEPARAM
 820         };
 821         int ret;
 822
 823         ifr.ifr_data = (void *)&ethpause;
 824         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 825         if (ret) {
 826                 DRV_LOG(WARNING,
 827                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
 828                         " %s",
 829                         dev->data->port_id, strerror(rte_errno));
 830                 return ret;
 831         }
 832         fc_conf->autoneg = ethpause.autoneg;
 833         if (ethpause.rx_pause && ethpause.tx_pause)
 834                 fc_conf->mode = RTE_FC_FULL;
 835         else if (ethpause.rx_pause)
 836                 fc_conf->mode = RTE_FC_RX_PAUSE;
 837         else if (ethpause.tx_pause)
 838                 fc_conf->mode = RTE_FC_TX_PAUSE;
 839         else
 840                 fc_conf->mode = RTE_FC_NONE;
 841         return 0;
 842 }
 843
 844 /**
 845  * DPDK callback to modify flow control parameters.
 846  *
 847  * @param dev
 848  *   Pointer to Ethernet device structure.
 849  * @param[in] fc_conf
 850  *   Flow control parameters.
 851  *
 852  * @return
 853  *   0 on success, a negative errno value otherwise and rte_errno is set.
 854  */
 855 int
 856 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 857 {
 858         struct ifreq ifr;
 859         struct ethtool_pauseparam ethpause = {
 860                 .cmd = ETHTOOL_SPAUSEPARAM
 861         };
 862         int ret;
 863
 864         ifr.ifr_data = (void *)&ethpause;
 865         ethpause.autoneg = fc_conf->autoneg;
 866         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 867             (fc_conf->mode & RTE_FC_RX_PAUSE))
 868                 ethpause.rx_pause = 1;
 869         else
 870                 ethpause.rx_pause = 0;
 871
 872         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 873             (fc_conf->mode & RTE_FC_TX_PAUSE))
 874                 ethpause.tx_pause = 1;
 875         else
 876                 ethpause.tx_pause = 0;
 877         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 878         if (ret) {
 879                 DRV_LOG(WARNING,
 880                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 881                         " failed: %s",
 882                         dev->data->port_id, strerror(rte_errno));
 883                 return ret;
 884         }
 885         return 0;
 886 }
 887
 888 /**
 889  * Get PCI information from struct ibv_device.
 890  *
 891  * @param device
 892  *   Pointer to Ethernet device structure.
 893  * @param[out] pci_addr
 894  *   PCI bus address output buffer.
 895  *
 896  * @return
 897  *   0 on success, a negative errno value otherwise and rte_errno is set.
 898  */
 899 int
 900 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 901                             struct rte_pci_addr *pci_addr)
 902 {
 903         FILE *file;
 904         char line[32];
 905         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 906
 907         file = fopen(path, "rb");
 908         if (file == NULL) {
 909                 rte_errno = errno;
 910                 return -rte_errno;
 911         }
 912         while (fgets(line, sizeof(line), file) == line) {
 913                 size_t len = strlen(line);
 914                 int ret;
 915
 916                 /* Truncate long lines. */
 917                 if (len == (sizeof(line) - 1))
 918                         while (line[(len - 1)] != '\n') {
 919                                 ret = fgetc(file);
 920                                 if (ret == EOF)
 921                                         break;
 922                                 line[(len - 1)] = ret;
 923                         }
 924                 /* Extract information. */
 925                 if (sscanf(line,
 926                            "PCI_SLOT_NAME="
 927                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 928                            &pci_addr->domain,
 929                            &pci_addr->bus,
 930                            &pci_addr->devid,
 931                            &pci_addr->function) == 4) {
 932                         ret = 0;
 933                         break;
 934                 }
 935         }
 936         fclose(file);
 937         return 0;
 938 }
 939
 940 /**
 941  * Device status handler.
 942  *
 943  * @param dev
 944  *   Pointer to Ethernet device.
 945  * @param events
 946  *   Pointer to event flags holder.
 947  *
 948  * @return
 949  *   Events bitmap of callback process which can be called immediately.
 950  */
 951 static uint32_t
 952 mlx5_dev_status_handler(struct rte_eth_dev *dev)
 953 {
 954         struct priv *priv = dev->data->dev_private;
 955         struct ibv_async_event event;
 956         uint32_t ret = 0;
 957
 958         if (mlx5_link_update(dev, 0) == -EAGAIN) {
 959                 usleep(0);
 960                 return 0;
 961         }
 962         /* Read all message and acknowledge them. */
 963         for (;;) {
 964                 if (mlx5_glue->get_async_event(priv->ctx, &event))
 965                         break;
 966                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
 967                         event.event_type == IBV_EVENT_PORT_ERR) &&
 968                         (dev->data->dev_conf.intr_conf.lsc == 1))
 969                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
 970                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
 971                         dev->data->dev_conf.intr_conf.rmv == 1)
 972                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
 973                 else
 974                         DRV_LOG(DEBUG,
 975                                 "port %u event type %d on not handled",
 976                                 dev->data->port_id, event.event_type);
 977                 mlx5_glue->ack_async_event(&event);
 978         }
 979         return ret;
 980 }
 981
 982 /**
 983  * Handle interrupts from the NIC.
 984  *
 985  * @param[in] intr_handle
 986  *   Interrupt handler.
 987  * @param cb_arg
 988  *   Callback argument.
 989  */
 990 void
 991 mlx5_dev_interrupt_handler(void *cb_arg)
 992 {
 993         struct rte_eth_dev *dev = cb_arg;
 994         uint32_t events;
 995
 996         events = mlx5_dev_status_handler(dev);
 997         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
 998                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
 999         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1000                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1001 }
1002
1003 /**
1004  * Handle interrupts from the socket.
1005  *
1006  * @param cb_arg
1007  *   Callback argument.
1008  */
1009 static void
1010 mlx5_dev_handler_socket(void *cb_arg)
1011 {
1012         struct rte_eth_dev *dev = cb_arg;
1013
1014         mlx5_socket_handle(dev);
1015 }
1016
1017 /**
1018  * Uninstall interrupt handler.
1019  *
1020  * @param dev
1021  *   Pointer to Ethernet device.
1022  */
1023 void
1024 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1025 {
1026         struct priv *priv = dev->data->dev_private;
1027
1028         if (dev->data->dev_conf.intr_conf.lsc ||
1029             dev->data->dev_conf.intr_conf.rmv)
1030                 rte_intr_callback_unregister(&priv->intr_handle,
1031                                              mlx5_dev_interrupt_handler, dev);
1032         if (priv->primary_socket)
1033                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1034                                              mlx5_dev_handler_socket, dev);
1035         priv->intr_handle.fd = 0;
1036         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1037         priv->intr_handle_socket.fd = 0;
1038         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1039 }
1040
1041 /**
1042  * Install interrupt handler.
1043  *
1044  * @param dev
1045  *   Pointer to Ethernet device.
1046  */
1047 void
1048 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1049 {
1050         struct priv *priv = dev->data->dev_private;
1051         int ret;
1052         int flags;
1053
1054         assert(priv->ctx->async_fd > 0);
1055         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1056         ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1057         if (ret) {
1058                 DRV_LOG(INFO,
1059                         "port %u failed to change file descriptor async event"
1060                         " queue",
1061                         dev->data->port_id);
1062                 dev->data->dev_conf.intr_conf.lsc = 0;
1063                 dev->data->dev_conf.intr_conf.rmv = 0;
1064         }
1065         if (dev->data->dev_conf.intr_conf.lsc ||
1066             dev->data->dev_conf.intr_conf.rmv) {
1067                 priv->intr_handle.fd = priv->ctx->async_fd;
1068                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1069                 rte_intr_callback_register(&priv->intr_handle,
1070                                            mlx5_dev_interrupt_handler, dev);
1071         }
1072         ret = mlx5_socket_init(dev);
1073         if (ret)
1074                 DRV_LOG(ERR, "port %u cannot initialise socket: %s",
1075                         dev->data->port_id, strerror(rte_errno));
1076         else if (priv->primary_socket) {
1077                 priv->intr_handle_socket.fd = priv->primary_socket;
1078                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1079                 rte_intr_callback_register(&priv->intr_handle_socket,
1080                                            mlx5_dev_handler_socket, dev);
1081         }
1082 }
1083
1084 /**
1085  * DPDK callback to bring the link DOWN.
1086  *
1087  * @param dev
1088  *   Pointer to Ethernet device structure.
1089  *
1090  * @return
1091  *   0 on success, a negative errno value otherwise and rte_errno is set.
1092  */
1093 int
1094 mlx5_set_link_down(struct rte_eth_dev *dev)
1095 {
1096         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1097 }
1098
1099 /**
1100  * DPDK callback to bring the link UP.
1101  *
1102  * @param dev
1103  *   Pointer to Ethernet device structure.
1104  *
1105  * @return
1106  *   0 on success, a negative errno value otherwise and rte_errno is set.
1107  */
1108 int
1109 mlx5_set_link_up(struct rte_eth_dev *dev)
1110 {
1111         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1112 }
1113
1114 /**
1115  * Configure the TX function to use.
1116  *
1117  * @param dev
1118  *   Pointer to private data structure.
1119  *
1120  * @return
1121  *   Pointer to selected Tx burst function.
1122  */
1123 eth_tx_burst_t
1124 mlx5_select_tx_function(struct rte_eth_dev *dev)
1125 {
1126         struct priv *priv = dev->data->dev_private;
1127         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1128         struct mlx5_dev_config *config = &priv->config;
1129         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1130         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1131                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1132                                     DEV_TX_OFFLOAD_GRE_TNL_TSO |
1133                                     DEV_TX_OFFLOAD_IP_TNL_TSO |
1134                                     DEV_TX_OFFLOAD_UDP_TNL_TSO));
1135         int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO |
1136                                     DEV_TX_OFFLOAD_UDP_TNL_TSO |
1137                                     DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM));
1138         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1139
1140         assert(priv != NULL);
1141         /* Select appropriate TX function. */
1142         if (vlan_insert || tso || swp)
1143                 return tx_pkt_burst;
1144         if (config->mps == MLX5_MPW_ENHANCED) {
1145                 if (mlx5_check_vec_tx_support(dev) > 0) {
1146                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1147                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1148                         else
1149                                 tx_pkt_burst = mlx5_tx_burst_vec;
1150                         DRV_LOG(DEBUG,
1151                                 "port %u selected enhanced MPW Tx vectorized"
1152                                 " function",
1153                                 dev->data->port_id);
1154                 } else {
1155                         tx_pkt_burst = mlx5_tx_burst_empw;
1156                         DRV_LOG(DEBUG,
1157                                 "port %u selected enhanced MPW Tx function",
1158                                 dev->data->port_id);
1159                 }
1160         } else if (config->mps && (config->txq_inline > 0)) {
1161                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1162                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1163                         dev->data->port_id);
1164         } else if (config->mps) {
1165                 tx_pkt_burst = mlx5_tx_burst_mpw;
1166                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1167                         dev->data->port_id);
1168         }
1169         return tx_pkt_burst;
1170 }
1171
1172 /**
1173  * Configure the RX function to use.
1174  *
1175  * @param dev
1176  *   Pointer to private data structure.
1177  *
1178  * @return
1179  *   Pointer to selected Rx burst function.
1180  */
1181 eth_rx_burst_t
1182 mlx5_select_rx_function(struct rte_eth_dev *dev)
1183 {
1184         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1185
1186         assert(dev != NULL);
1187         if (mlx5_check_vec_rx_support(dev) > 0) {
1188                 rx_pkt_burst = mlx5_rx_burst_vec;
1189                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1190                         dev->data->port_id);
1191         }
1192         return rx_pkt_burst;
1193 }
1194
1195 /**
1196  * Check if mlx5 device was removed.
1197  *
1198  * @param dev
1199  *   Pointer to Ethernet device structure.
1200  *
1201  * @return
1202  *   1 when device is removed, otherwise 0.
1203  */
1204 int
1205 mlx5_is_removed(struct rte_eth_dev *dev)
1206 {
1207         struct ibv_device_attr device_attr;
1208         struct priv *priv = dev->data->dev_private;
1209
1210         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1211                 return 1;
1212         return 0;
1213 }