drivers/net/mlx5/mlx5_ethdev.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 #define _GNU_SOURCE
  35
  36 #include <stddef.h>
  37 #include <assert.h>
  38 #include <inttypes.h>
  39 #include <unistd.h>
  40 #include <stdint.h>
  41 #include <stdio.h>
  42 #include <string.h>
  43 #include <stdlib.h>
  44 #include <errno.h>
  45 #include <dirent.h>
  46 #include <net/if.h>
  47 #include <sys/ioctl.h>
  48 #include <sys/socket.h>
  49 #include <netinet/in.h>
  50 #include <linux/ethtool.h>
  51 #include <linux/sockios.h>
  52 #include <fcntl.h>
  53 #include <stdalign.h>
  54 #include <sys/un.h>
  55 #include <time.h>
  56
  57 #include <rte_atomic.h>
  58 #include <rte_ethdev.h>
  59 #include <rte_bus_pci.h>
  60 #include <rte_mbuf.h>
  61 #include <rte_common.h>
  62 #include <rte_interrupts.h>
  63 #include <rte_malloc.h>
  64
  65 #include "mlx5.h"
  66 #include "mlx5_rxtx.h"
  67 #include "mlx5_utils.h"
  68
  69 /* Supported speed values found in /usr/include/linux/ethtool.h */
  70 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
  71 #define SUPPORTED_40000baseKR4_Full (1 << 23)
  72 #endif
  73 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
  74 #define SUPPORTED_40000baseCR4_Full (1 << 24)
  75 #endif
  76 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
  77 #define SUPPORTED_40000baseSR4_Full (1 << 25)
  78 #endif
  79 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
  80 #define SUPPORTED_40000baseLR4_Full (1 << 26)
  81 #endif
  82 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
  83 #define SUPPORTED_56000baseKR4_Full (1 << 27)
  84 #endif
  85 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
  86 #define SUPPORTED_56000baseCR4_Full (1 << 28)
  87 #endif
  88 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
  89 #define SUPPORTED_56000baseSR4_Full (1 << 29)
  90 #endif
  91 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
  92 #define SUPPORTED_56000baseLR4_Full (1 << 30)
  93 #endif
  94
  95 /* Add defines in case the running kernel is not the same as user headers. */
  96 #ifndef ETHTOOL_GLINKSETTINGS
  97 struct ethtool_link_settings {
  98         uint32_t cmd;
  99         uint32_t speed;
 100         uint8_t duplex;
 101         uint8_t port;
 102         uint8_t phy_address;
 103         uint8_t autoneg;
 104         uint8_t mdio_support;
 105         uint8_t eth_to_mdix;
 106         uint8_t eth_tp_mdix_ctrl;
 107         int8_t link_mode_masks_nwords;
 108         uint32_t reserved[8];
 109         uint32_t link_mode_masks[];
 110 };
 111
 112 #define ETHTOOL_GLINKSETTINGS 0x0000004c
 113 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
 114 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
 115 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
 116 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
 117 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
 118 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
 119 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
 120 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
 121 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
 122 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
 123 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
 124 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
 125 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
 126 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 127 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 128 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 129 #endif
 130 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 131 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 132 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 133 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 134 #endif
 135 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 136 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 137 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 138 #endif
 139 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 140 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 141 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 142 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 143 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 144 #endif
 145
 146 /**
 147  * Get interface name from private structure.
 148  *
 149  * @param[in] dev
 150  *   Pointer to Ethernet device.
 151  * @param[out] ifname
 152  *   Interface name output buffer.
 153  *
 154  * @return
 155  *   0 on success, a negative errno value otherwise and rte_errno is set.
 156  */
 157 int
 158 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 159 {
 160         struct priv *priv = dev->data->dev_private;
 161         DIR *dir;
 162         struct dirent *dent;
 163         unsigned int dev_type = 0;
 164         unsigned int dev_port_prev = ~0u;
 165         char match[IF_NAMESIZE] = "";
 166
 167         {
 168                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 169
 170                 dir = opendir(path);
 171                 if (dir == NULL) {
 172                         rte_errno = errno;
 173                         return -rte_errno;
 174                 }
 175         }
 176         while ((dent = readdir(dir)) != NULL) {
 177                 char *name = dent->d_name;
 178                 FILE *file;
 179                 unsigned int dev_port;
 180                 int r;
 181
 182                 if ((name[0] == '.') &&
 183                     ((name[1] == '\0') ||
 184                      ((name[1] == '.') && (name[2] == '\0'))))
 185                         continue;
 186
 187                 MKSTR(path, "%s/device/net/%s/%s",
 188                       priv->ibdev_path, name,
 189                       (dev_type ? "dev_id" : "dev_port"));
 190
 191                 file = fopen(path, "rb");
 192                 if (file == NULL) {
 193                         if (errno != ENOENT)
 194                                 continue;
 195                         /*
 196                          * Switch to dev_id when dev_port does not exist as
 197                          * is the case with Linux kernel versions < 3.15.
 198                          */
 199 try_dev_id:
 200                         match[0] = '\0';
 201                         if (dev_type)
 202                                 break;
 203                         dev_type = 1;
 204                         dev_port_prev = ~0u;
 205                         rewinddir(dir);
 206                         continue;
 207                 }
 208                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 209                 fclose(file);
 210                 if (r != 1)
 211                         continue;
 212                 /*
 213                  * Switch to dev_id when dev_port returns the same value for
 214                  * all ports. May happen when using a MOFED release older than
 215                  * 3.0 with a Linux kernel >= 3.15.
 216                  */
 217                 if (dev_port == dev_port_prev)
 218                         goto try_dev_id;
 219                 dev_port_prev = dev_port;
 220                 if (dev_port == (priv->port - 1u))
 221                         snprintf(match, sizeof(match), "%s", name);
 222         }
 223         closedir(dir);
 224         if (match[0] == '\0') {
 225                 rte_errno = ENOENT;
 226                 return -rte_errno;
 227         }
 228         strncpy(*ifname, match, sizeof(*ifname));
 229         return 0;
 230 }
 231
 232 /**
 233  * Perform ifreq ioctl() on associated Ethernet device.
 234  *
 235  * @param[in] dev
 236  *   Pointer to Ethernet device.
 237  * @param req
 238  *   Request number to pass to ioctl().
 239  * @param[out] ifr
 240  *   Interface request structure output buffer.
 241  *
 242  * @return
 243  *   0 on success, a negative errno value otherwise and rte_errno is set.
 244  */
 245 int
 246 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 247 {
 248         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 249         int ret = 0;
 250
 251         if (sock == -1) {
 252                 rte_errno = errno;
 253                 return -rte_errno;
 254         }
 255         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 256         if (ret)
 257                 goto error;
 258         ret = ioctl(sock, req, ifr);
 259         if (ret == -1) {
 260                 rte_errno = errno;
 261                 goto error;
 262         }
 263         close(sock);
 264         return 0;
 265 error:
 266         close(sock);
 267         return -rte_errno;
 268 }
 269
 270 /**
 271  * Get device MTU.
 272  *
 273  * @param dev
 274  *   Pointer to Ethernet device.
 275  * @param[out] mtu
 276  *   MTU value output buffer.
 277  *
 278  * @return
 279  *   0 on success, a negative errno value otherwise and rte_errno is set.
 280  */
 281 int
 282 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 283 {
 284         struct ifreq request;
 285         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 286
 287         if (ret)
 288                 return ret;
 289         *mtu = request.ifr_mtu;
 290         return 0;
 291 }
 292
 293 /**
 294  * Set device MTU.
 295  *
 296  * @param dev
 297  *   Pointer to Ethernet device.
 298  * @param mtu
 299  *   MTU value to set.
 300  *
 301  * @return
 302  *   0 on success, a negative errno value otherwise and rte_errno is set.
 303  */
 304 static int
 305 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 306 {
 307         struct ifreq request = { .ifr_mtu = mtu, };
 308
 309         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 310 }
 311
 312 /**
 313  * Set device flags.
 314  *
 315  * @param dev
 316  *   Pointer to Ethernet device.
 317  * @param keep
 318  *   Bitmask for flags that must remain untouched.
 319  * @param flags
 320  *   Bitmask for flags to modify.
 321  *
 322  * @return
 323  *   0 on success, a negative errno value otherwise and rte_errno is set.
 324  */
 325 int
 326 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 327 {
 328         struct ifreq request;
 329         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 330
 331         if (ret)
 332                 return ret;
 333         request.ifr_flags &= keep;
 334         request.ifr_flags |= flags & ~keep;
 335         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 336 }
 337
 338 /**
 339  * DPDK callback for Ethernet device configuration.
 340  *
 341  * @param dev
 342  *   Pointer to Ethernet device structure.
 343  *
 344  * @return
 345  *   0 on success, a negative errno value otherwise and rte_errno is set.
 346  */
 347 int
 348 mlx5_dev_configure(struct rte_eth_dev *dev)
 349 {
 350         struct priv *priv = dev->data->dev_private;
 351         unsigned int rxqs_n = dev->data->nb_rx_queues;
 352         unsigned int txqs_n = dev->data->nb_tx_queues;
 353         unsigned int i;
 354         unsigned int j;
 355         unsigned int reta_idx_n;
 356         const uint8_t use_app_rss_key =
 357                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 358         int ret = 0;
 359
 360         if (use_app_rss_key &&
 361             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 362              rss_hash_default_key_len)) {
 363                 DRV_LOG(ERR, "port %u RSS key len must be %zu Bytes long",
 364                         dev->data->port_id, rss_hash_default_key_len);
 365                 rte_errno = EINVAL;
 366                 return -rte_errno;
 367         }
 368         priv->rss_conf.rss_key =
 369                 rte_realloc(priv->rss_conf.rss_key,
 370                             rss_hash_default_key_len, 0);
 371         if (!priv->rss_conf.rss_key) {
 372                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 373                         dev->data->port_id, rxqs_n);
 374                 rte_errno = ENOMEM;
 375                 return -rte_errno;
 376         }
 377         memcpy(priv->rss_conf.rss_key,
 378                use_app_rss_key ?
 379                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 380                rss_hash_default_key,
 381                rss_hash_default_key_len);
 382         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 383         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 384         priv->rxqs = (void *)dev->data->rx_queues;
 385         priv->txqs = (void *)dev->data->tx_queues;
 386         if (txqs_n != priv->txqs_n) {
 387                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 388                         dev->data->port_id, priv->txqs_n, txqs_n);
 389                 priv->txqs_n = txqs_n;
 390         }
 391         if (rxqs_n > priv->ind_table_max_size) {
 392                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 393                         dev->data->port_id, rxqs_n);
 394                 rte_errno = EINVAL;
 395                 return -rte_errno;
 396         }
 397         if (rxqs_n == priv->rxqs_n)
 398                 return 0;
 399         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 400                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 401         priv->rxqs_n = rxqs_n;
 402         /* If the requested number of RX queues is not a power of two, use the
 403          * maximum indirection table size for better balancing.
 404          * The result is always rounded to the next power of two. */
 405         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 406                                      priv->ind_table_max_size :
 407                                      rxqs_n));
 408         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 409         if (ret)
 410                 return ret;
 411         /* When the number of RX queues is not a power of two, the remaining
 412          * table entries are padded with reused WQs and hashes are not spread
 413          * uniformly. */
 414         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 415                 (*priv->reta_idx)[i] = j;
 416                 if (++j == rxqs_n)
 417                         j = 0;
 418         }
 419         return 0;
 420 }
 421
 422 /**
 423  * DPDK callback to get information about the device.
 424  *
 425  * @param dev
 426  *   Pointer to Ethernet device structure.
 427  * @param[out] info
 428  *   Info structure output buffer.
 429  */
 430 void
 431 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 432 {
 433         struct priv *priv = dev->data->dev_private;
 434         unsigned int max;
 435         char ifname[IF_NAMESIZE];
 436
 437         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 438         /* FIXME: we should ask the device for these values. */
 439         info->min_rx_bufsize = 32;
 440         info->max_rx_pktlen = 65536;
 441         /*
 442          * Since we need one CQ per QP, the limit is the minimum number
 443          * between the two values.
 444          */
 445         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 446                       priv->device_attr.orig_attr.max_qp);
 447         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 448         if (max >= 65535)
 449                 max = 65535;
 450         info->max_rx_queues = max;
 451         info->max_tx_queues = max;
 452         info->max_mac_addrs = RTE_DIM(priv->mac);
 453         info->rx_offload_capa =
 454                 (priv->hw_csum ?
 455                  (DEV_RX_OFFLOAD_IPV4_CKSUM |
 456                   DEV_RX_OFFLOAD_UDP_CKSUM |
 457                   DEV_RX_OFFLOAD_TCP_CKSUM) :
 458                  0) |
 459                 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0) |
 460                 DEV_RX_OFFLOAD_TIMESTAMP;
 461
 462         if (!priv->mps)
 463                 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
 464         if (priv->hw_csum)
 465                 info->tx_offload_capa |=
 466                         (DEV_TX_OFFLOAD_IPV4_CKSUM |
 467                          DEV_TX_OFFLOAD_UDP_CKSUM |
 468                          DEV_TX_OFFLOAD_TCP_CKSUM);
 469         if (priv->tso)
 470                 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
 471         if (priv->tunnel_en)
 472                 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
 473                                           DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
 474                                           DEV_TX_OFFLOAD_GRE_TNL_TSO);
 475         if (mlx5_get_ifname(dev, &ifname) == 0)
 476                 info->if_index = if_nametoindex(ifname);
 477         info->reta_size = priv->reta_idx_n ?
 478                 priv->reta_idx_n : priv->ind_table_max_size;
 479         info->hash_key_size = rss_hash_default_key_len;
 480         info->speed_capa = priv->link_speed_capa;
 481         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 482 }
 483
 484 /**
 485  * Get supported packet types.
 486  *
 487  * @param dev
 488  *   Pointer to Ethernet device structure.
 489  *
 490  * @return
 491  *   A pointer to the supported Packet types array.
 492  */
 493 const uint32_t *
 494 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 495 {
 496         static const uint32_t ptypes[] = {
 497                 /* refers to rxq_cq_to_pkt_type() */
 498                 RTE_PTYPE_L2_ETHER,
 499                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 500                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 501                 RTE_PTYPE_L4_NONFRAG,
 502                 RTE_PTYPE_L4_FRAG,
 503                 RTE_PTYPE_L4_TCP,
 504                 RTE_PTYPE_L4_UDP,
 505                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 506                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 507                 RTE_PTYPE_INNER_L4_NONFRAG,
 508                 RTE_PTYPE_INNER_L4_FRAG,
 509                 RTE_PTYPE_INNER_L4_TCP,
 510                 RTE_PTYPE_INNER_L4_UDP,
 511                 RTE_PTYPE_UNKNOWN
 512         };
 513
 514         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 515             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 516                 return ptypes;
 517         return NULL;
 518 }
 519
 520 /**
 521  * DPDK callback to retrieve physical link information.
 522  *
 523  * @param dev
 524  *   Pointer to Ethernet device structure.
 525  * @param[out] link
 526  *   Storage for current link status.
 527  *
 528  * @return
 529  *   0 on success, a negative errno value otherwise and rte_errno is set.
 530  */
 531 static int
 532 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 533                                struct rte_eth_link *link)
 534 {
 535         struct priv *priv = dev->data->dev_private;
 536         struct ethtool_cmd edata = {
 537                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 538         };
 539         struct ifreq ifr;
 540         struct rte_eth_link dev_link;
 541         int link_speed = 0;
 542         int ret;
 543
 544         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 545         if (ret) {
 546                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 547                         dev->data->port_id, strerror(rte_errno));
 548                 return ret;
 549         }
 550         memset(&dev_link, 0, sizeof(dev_link));
 551         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 552                                 (ifr.ifr_flags & IFF_RUNNING));
 553         ifr.ifr_data = (void *)&edata;
 554         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 555         if (ret) {
 556                 DRV_LOG(WARNING,
 557                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 558                         dev->data->port_id, strerror(rte_errno));
 559                 return ret;
 560         }
 561         link_speed = ethtool_cmd_speed(&edata);
 562         if (link_speed == -1)
 563                 dev_link.link_speed = 0;
 564         else
 565                 dev_link.link_speed = link_speed;
 566         priv->link_speed_capa = 0;
 567         if (edata.supported & SUPPORTED_Autoneg)
 568                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 569         if (edata.supported & (SUPPORTED_1000baseT_Full |
 570                                SUPPORTED_1000baseKX_Full))
 571                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 572         if (edata.supported & SUPPORTED_10000baseKR_Full)
 573                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 574         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 575                                SUPPORTED_40000baseCR4_Full |
 576                                SUPPORTED_40000baseSR4_Full |
 577                                SUPPORTED_40000baseLR4_Full))
 578                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 579         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 580                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 581         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 582                         ETH_LINK_SPEED_FIXED);
 583         if ((dev_link.link_speed && !dev_link.link_status) ||
 584             (!dev_link.link_speed && dev_link.link_status)) {
 585                 rte_errno = EAGAIN;
 586                 return -rte_errno;
 587         }
 588         *link = dev_link;
 589         return 0;
 590 }
 591
 592 /**
 593  * Retrieve physical link information (unlocked version using new ioctl).
 594  *
 595  * @param dev
 596  *   Pointer to Ethernet device structure.
 597  * @param[out] link
 598  *   Storage for current link status.
 599  *
 600  * @return
 601  *   0 on success, a negative errno value otherwise and rte_errno is set.
 602  */
 603 static int
 604 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 605                              struct rte_eth_link *link)
 606
 607 {
 608         struct priv *priv = dev->data->dev_private;
 609         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 610         struct ifreq ifr;
 611         struct rte_eth_link dev_link;
 612         uint64_t sc;
 613         int ret;
 614
 615         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 616         if (ret) {
 617                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 618                         dev->data->port_id, strerror(rte_errno));
 619                 return ret;
 620         }
 621         memset(&dev_link, 0, sizeof(dev_link));
 622         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 623                                 (ifr.ifr_flags & IFF_RUNNING));
 624         ifr.ifr_data = (void *)&gcmd;
 625         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 626         if (ret) {
 627                 DRV_LOG(DEBUG,
 628                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 629                         " failed: %s",
 630                         dev->data->port_id, strerror(rte_errno));
 631                 return ret;
 632         }
 633         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 634
 635         alignas(struct ethtool_link_settings)
 636         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 637                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 638         struct ethtool_link_settings *ecmd = (void *)data;
 639
 640         *ecmd = gcmd;
 641         ifr.ifr_data = (void *)ecmd;
 642         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 643         if (ret) {
 644                 DRV_LOG(DEBUG,
 645                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS)"
 646                         " failed: %s",
 647                         dev->data->port_id, strerror(rte_errno));
 648                 return ret;
 649         }
 650         dev_link.link_speed = ecmd->speed;
 651         sc = ecmd->link_mode_masks[0] |
 652                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 653         priv->link_speed_capa = 0;
 654         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 655                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 656         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 657                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 658                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 659         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 660                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 661                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 662                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 663         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 664                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 665                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 666         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 667                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 668                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 669                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 670                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 671         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 672                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 673                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 674                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 675                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 676         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 677                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 678                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 679                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 680         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 681                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 682                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 683         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 684                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 685                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 686                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 687                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 688         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 689                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 690         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 691                                   ETH_LINK_SPEED_FIXED);
 692         if ((dev_link.link_speed && !dev_link.link_status) ||
 693             (!dev_link.link_speed && dev_link.link_status)) {
 694                 rte_errno = EAGAIN;
 695                 return -rte_errno;
 696         }
 697         *link = dev_link;
 698         return 0;
 699 }
 700
 701 /**
 702  * DPDK callback to retrieve physical link information.
 703  *
 704  * @param dev
 705  *   Pointer to Ethernet device structure.
 706  * @param wait_to_complete
 707  *   Wait for request completion.
 708  *
 709  * @return
 710  *   0 if link status was not updated, positive if it was, a negative errno
 711  *   value otherwise and rte_errno is set.
 712  */
 713 int
 714 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 715 {
 716         int ret;
 717         struct rte_eth_link dev_link;
 718         time_t start_time = time(NULL);
 719
 720         do {
 721                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
 722                 if (ret)
 723                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
 724                 if (ret == 0)
 725                         break;
 726                 /* Handle wait to complete situation. */
 727                 if (wait_to_complete && ret == -EAGAIN) {
 728                         if (abs((int)difftime(time(NULL), start_time)) <
 729                             MLX5_LINK_STATUS_TIMEOUT) {
 730                                 usleep(0);
 731                                 continue;
 732                         } else {
 733                                 rte_errno = EBUSY;
 734                                 return -rte_errno;
 735                         }
 736                 } else if (ret < 0) {
 737                         return ret;
 738                 }
 739         } while (wait_to_complete);
 740         ret = !!memcmp(&dev->data->dev_link, &dev_link,
 741                        sizeof(struct rte_eth_link));
 742         dev->data->dev_link = dev_link;
 743         return ret;
 744 }
 745
 746 /**
 747  * DPDK callback to change the MTU.
 748  *
 749  * @param dev
 750  *   Pointer to Ethernet device structure.
 751  * @param in_mtu
 752  *   New MTU.
 753  *
 754  * @return
 755  *   0 on success, a negative errno value otherwise and rte_errno is set.
 756  */
 757 int
 758 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 759 {
 760         struct priv *priv = dev->data->dev_private;
 761         uint16_t kern_mtu = 0;
 762         int ret;
 763
 764         ret = mlx5_get_mtu(dev, &kern_mtu);
 765         if (ret)
 766                 return ret;
 767         /* Set kernel interface MTU first. */
 768         ret = mlx5_set_mtu(dev, mtu);
 769         if (ret)
 770                 return ret;
 771         ret = mlx5_get_mtu(dev, &kern_mtu);
 772         if (ret)
 773                 return ret;
 774         if (kern_mtu == mtu) {
 775                 priv->mtu = mtu;
 776                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
 777                         dev->data->port_id, mtu);
 778                 return 0;
 779         }
 780         rte_errno = EAGAIN;
 781         return -rte_errno;
 782 }
 783
 784 /**
 785  * DPDK callback to get flow control status.
 786  *
 787  * @param dev
 788  *   Pointer to Ethernet device structure.
 789  * @param[out] fc_conf
 790  *   Flow control output buffer.
 791  *
 792  * @return
 793  *   0 on success, a negative errno value otherwise and rte_errno is set.
 794  */
 795 int
 796 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 797 {
 798         struct ifreq ifr;
 799         struct ethtool_pauseparam ethpause = {
 800                 .cmd = ETHTOOL_GPAUSEPARAM
 801         };
 802         int ret;
 803
 804         ifr.ifr_data = (void *)&ethpause;
 805         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 806         if (ret) {
 807                 DRV_LOG(WARNING,
 808                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
 809                         " %s",
 810                         dev->data->port_id, strerror(rte_errno));
 811                 return ret;
 812         }
 813         fc_conf->autoneg = ethpause.autoneg;
 814         if (ethpause.rx_pause && ethpause.tx_pause)
 815                 fc_conf->mode = RTE_FC_FULL;
 816         else if (ethpause.rx_pause)
 817                 fc_conf->mode = RTE_FC_RX_PAUSE;
 818         else if (ethpause.tx_pause)
 819                 fc_conf->mode = RTE_FC_TX_PAUSE;
 820         else
 821                 fc_conf->mode = RTE_FC_NONE;
 822         return 0;
 823 }
 824
 825 /**
 826  * DPDK callback to modify flow control parameters.
 827  *
 828  * @param dev
 829  *   Pointer to Ethernet device structure.
 830  * @param[in] fc_conf
 831  *   Flow control parameters.
 832  *
 833  * @return
 834  *   0 on success, a negative errno value otherwise and rte_errno is set.
 835  */
 836 int
 837 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 838 {
 839         struct ifreq ifr;
 840         struct ethtool_pauseparam ethpause = {
 841                 .cmd = ETHTOOL_SPAUSEPARAM
 842         };
 843         int ret;
 844
 845         ifr.ifr_data = (void *)&ethpause;
 846         ethpause.autoneg = fc_conf->autoneg;
 847         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 848             (fc_conf->mode & RTE_FC_RX_PAUSE))
 849                 ethpause.rx_pause = 1;
 850         else
 851                 ethpause.rx_pause = 0;
 852
 853         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 854             (fc_conf->mode & RTE_FC_TX_PAUSE))
 855                 ethpause.tx_pause = 1;
 856         else
 857                 ethpause.tx_pause = 0;
 858         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 859         if (ret) {
 860                 DRV_LOG(WARNING,
 861                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 862                         " failed: %s",
 863                         dev->data->port_id, strerror(rte_errno));
 864                 return ret;
 865         }
 866         return 0;
 867 }
 868
 869 /**
 870  * Get PCI information from struct ibv_device.
 871  *
 872  * @param device
 873  *   Pointer to Ethernet device structure.
 874  * @param[out] pci_addr
 875  *   PCI bus address output buffer.
 876  *
 877  * @return
 878  *   0 on success, a negative errno value otherwise and rte_errno is set.
 879  */
 880 int
 881 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 882                             struct rte_pci_addr *pci_addr)
 883 {
 884         FILE *file;
 885         char line[32];
 886         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 887
 888         file = fopen(path, "rb");
 889         if (file == NULL) {
 890                 rte_errno = errno;
 891                 return -rte_errno;
 892         }
 893         while (fgets(line, sizeof(line), file) == line) {
 894                 size_t len = strlen(line);
 895                 int ret;
 896
 897                 /* Truncate long lines. */
 898                 if (len == (sizeof(line) - 1))
 899                         while (line[(len - 1)] != '\n') {
 900                                 ret = fgetc(file);
 901                                 if (ret == EOF)
 902                                         break;
 903                                 line[(len - 1)] = ret;
 904                         }
 905                 /* Extract information. */
 906                 if (sscanf(line,
 907                            "PCI_SLOT_NAME="
 908                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 909                            &pci_addr->domain,
 910                            &pci_addr->bus,
 911                            &pci_addr->devid,
 912                            &pci_addr->function) == 4) {
 913                         ret = 0;
 914                         break;
 915                 }
 916         }
 917         fclose(file);
 918         return 0;
 919 }
 920
 921 /**
 922  * Device status handler.
 923  *
 924  * @param dev
 925  *   Pointer to Ethernet device.
 926  * @param events
 927  *   Pointer to event flags holder.
 928  *
 929  * @return
 930  *   Events bitmap of callback process which can be called immediately.
 931  */
 932 static uint32_t
 933 mlx5_dev_status_handler(struct rte_eth_dev *dev)
 934 {
 935         struct priv *priv = dev->data->dev_private;
 936         struct ibv_async_event event;
 937         uint32_t ret = 0;
 938
 939         if (mlx5_link_update(dev, 0) == -EAGAIN) {
 940                 usleep(0);
 941                 return 0;
 942         }
 943         /* Read all message and acknowledge them. */
 944         for (;;) {
 945                 if (ibv_get_async_event(priv->ctx, &event))
 946                         break;
 947                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
 948                         event.event_type == IBV_EVENT_PORT_ERR) &&
 949                         (dev->data->dev_conf.intr_conf.lsc == 1))
 950                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
 951                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
 952                         dev->data->dev_conf.intr_conf.rmv == 1)
 953                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
 954                 else
 955                         DRV_LOG(DEBUG,
 956                                 "port %u event type %d on not handled",
 957                                 dev->data->port_id, event.event_type);
 958                 ibv_ack_async_event(&event);
 959         }
 960         return ret;
 961 }
 962
 963 /**
 964  * Handle interrupts from the NIC.
 965  *
 966  * @param[in] intr_handle
 967  *   Interrupt handler.
 968  * @param cb_arg
 969  *   Callback argument.
 970  */
 971 void
 972 mlx5_dev_interrupt_handler(void *cb_arg)
 973 {
 974         struct rte_eth_dev *dev = cb_arg;
 975         uint32_t events;
 976
 977         events = mlx5_dev_status_handler(dev);
 978         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
 979                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
 980                                               NULL);
 981         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
 982                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL,
 983                                               NULL);
 984 }
 985
 986 /**
 987  * Handle interrupts from the socket.
 988  *
 989  * @param cb_arg
 990  *   Callback argument.
 991  */
 992 static void
 993 mlx5_dev_handler_socket(void *cb_arg)
 994 {
 995         struct rte_eth_dev *dev = cb_arg;
 996
 997         mlx5_socket_handle(dev);
 998 }
 999
1000 /**
1001  * Uninstall interrupt handler.
1002  *
1003  * @param dev
1004  *   Pointer to Ethernet device.
1005  */
1006 void
1007 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1008 {
1009         struct priv *priv = dev->data->dev_private;
1010
1011         if (dev->data->dev_conf.intr_conf.lsc ||
1012             dev->data->dev_conf.intr_conf.rmv)
1013                 rte_intr_callback_unregister(&priv->intr_handle,
1014                                              mlx5_dev_interrupt_handler, dev);
1015         if (priv->primary_socket)
1016                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1017                                              mlx5_dev_handler_socket, dev);
1018         priv->intr_handle.fd = 0;
1019         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1020         priv->intr_handle_socket.fd = 0;
1021         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1022 }
1023
1024 /**
1025  * Install interrupt handler.
1026  *
1027  * @param dev
1028  *   Pointer to Ethernet device.
1029  */
1030 void
1031 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1032 {
1033         struct priv *priv = dev->data->dev_private;
1034         int ret;
1035         int flags;
1036
1037         assert(priv->ctx->async_fd > 0);
1038         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1039         ret = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1040         if (ret) {
1041                 DRV_LOG(INFO,
1042                         "port %u failed to change file descriptor async event"
1043                         " queue",
1044                         dev->data->port_id);
1045                 dev->data->dev_conf.intr_conf.lsc = 0;
1046                 dev->data->dev_conf.intr_conf.rmv = 0;
1047         }
1048         if (dev->data->dev_conf.intr_conf.lsc ||
1049             dev->data->dev_conf.intr_conf.rmv) {
1050                 priv->intr_handle.fd = priv->ctx->async_fd;
1051                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1052                 rte_intr_callback_register(&priv->intr_handle,
1053                                            mlx5_dev_interrupt_handler, dev);
1054         }
1055         ret = mlx5_socket_init(dev);
1056         if (ret)
1057                 DRV_LOG(ERR, "port %u cannot initialise socket: %s",
1058                         dev->data->port_id, strerror(rte_errno));
1059         else if (priv->primary_socket) {
1060                 priv->intr_handle_socket.fd = priv->primary_socket;
1061                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1062                 rte_intr_callback_register(&priv->intr_handle_socket,
1063                                            mlx5_dev_handler_socket, dev);
1064         }
1065 }
1066
1067 /**
1068  * DPDK callback to bring the link DOWN.
1069  *
1070  * @param dev
1071  *   Pointer to Ethernet device structure.
1072  *
1073  * @return
1074  *   0 on success, a negative errno value otherwise and rte_errno is set.
1075  */
1076 int
1077 mlx5_set_link_down(struct rte_eth_dev *dev)
1078 {
1079         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1080 }
1081
1082 /**
1083  * DPDK callback to bring the link UP.
1084  *
1085  * @param dev
1086  *   Pointer to Ethernet device structure.
1087  *
1088  * @return
1089  *   0 on success, a negative errno value otherwise and rte_errno is set.
1090  */
1091 int
1092 mlx5_set_link_up(struct rte_eth_dev *dev)
1093 {
1094         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1095 }
1096
1097 /**
1098  * Configure the TX function to use.
1099  *
1100  * @param dev
1101  *   Pointer to rte_eth_dev structure.
1102  *
1103  * @return
1104  *   Pointer to selected Tx burst function.
1105  */
1106 eth_tx_burst_t
1107 mlx5_select_tx_function(struct rte_eth_dev *dev)
1108 {
1109         struct priv *priv = dev->data->dev_private;
1110         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1111
1112         /* Select appropriate TX function. */
1113         if (priv->mps == MLX5_MPW_ENHANCED) {
1114                 if (mlx5_check_vec_tx_support(dev) > 0) {
1115                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1116                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1117                         else
1118                                 tx_pkt_burst = mlx5_tx_burst_vec;
1119                         DRV_LOG(DEBUG,
1120                                 "port %u selected enhanced MPW Tx vectorized"
1121                                 " function",
1122                                 dev->data->port_id);
1123                 } else {
1124                         tx_pkt_burst = mlx5_tx_burst_empw;
1125                         DRV_LOG(DEBUG,
1126                                 "port %u selected enhanced MPW Tx function",
1127                                 dev->data->port_id);
1128                 }
1129         } else if (priv->mps && priv->txq_inline) {
1130                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1131                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1132                         dev->data->port_id);
1133         } else if (priv->mps) {
1134                 tx_pkt_burst = mlx5_tx_burst_mpw;
1135                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1136                         dev->data->port_id);
1137         }
1138         return tx_pkt_burst;
1139 }
1140
1141 /**
1142  * Configure the RX function to use.
1143  *
1144  * @param dev
1145  *   Pointer to rte_eth_dev structure.
1146  *
1147  * @return
1148  *   Pointer to selected Rx burst function.
1149  */
1150 eth_rx_burst_t
1151 mlx5_select_rx_function(struct rte_eth_dev *dev)
1152 {
1153         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1154
1155         assert(dev != NULL);
1156         if (mlx5_check_vec_rx_support(dev) > 0) {
1157                 rx_pkt_burst = mlx5_rx_burst_vec;
1158                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1159                         dev->data->port_id);
1160         }
1161         return rx_pkt_burst;
1162 }