drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox.
   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 <sys/utsname.h>
  22 #include <netinet/in.h>
  23 #include <linux/ethtool.h>
  24 #include <linux/sockios.h>
  25 #include <linux/version.h>
  26 #include <fcntl.h>
  27 #include <stdalign.h>
  28 #include <sys/un.h>
  29
  30 #include <rte_atomic.h>
  31 #include <rte_ethdev_driver.h>
  32 #include <rte_bus_pci.h>
  33 #include <rte_mbuf.h>
  34 #include <rte_common.h>
  35 #include <rte_interrupts.h>
  36 #include <rte_alarm.h>
  37 #include <rte_malloc.h>
  38
  39 #include "mlx5.h"
  40 #include "mlx5_glue.h"
  41 #include "mlx5_rxtx.h"
  42 #include "mlx5_utils.h"
  43
  44 /* Add defines in case the running kernel is not the same as user headers. */
  45 #ifndef ETHTOOL_GLINKSETTINGS
  46 struct ethtool_link_settings {
  47         uint32_t cmd;
  48         uint32_t speed;
  49         uint8_t duplex;
  50         uint8_t port;
  51         uint8_t phy_address;
  52         uint8_t autoneg;
  53         uint8_t mdio_support;
  54         uint8_t eth_to_mdix;
  55         uint8_t eth_tp_mdix_ctrl;
  56         int8_t link_mode_masks_nwords;
  57         uint32_t reserved[8];
  58         uint32_t link_mode_masks[];
  59 };
  60
  61 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  62 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  63 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  64 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  65 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  66 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  67 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  68 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  69 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  70 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  71 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  72 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  73 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  74 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
  75 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
  76 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
  77 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
  78 #endif
  79 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
  80 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
  81 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
  82 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
  83 #endif
  84 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
  85 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
  86 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
  87 #endif
  88 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
  89 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
  90 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
  91 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
  92 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
  93 #endif
  94
  95 /**
  96  * Get interface name from private structure.
  97  *
  98  * @param[in] dev
  99  *   Pointer to Ethernet device.
 100  * @param[out] ifname
 101  *   Interface name output buffer.
 102  *
 103  * @return
 104  *   0 on success, -1 on failure and errno is set.
 105  */
 106 int
 107 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 108 {
 109         struct priv *priv = dev->data->dev_private;
 110         DIR *dir;
 111         struct dirent *dent;
 112         unsigned int dev_type = 0;
 113         unsigned int dev_port_prev = ~0u;
 114         char match[IF_NAMESIZE] = "";
 115
 116         {
 117                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 118
 119                 dir = opendir(path);
 120                 if (dir == NULL)
 121                         return -1;
 122         }
 123         while ((dent = readdir(dir)) != NULL) {
 124                 char *name = dent->d_name;
 125                 FILE *file;
 126                 unsigned int dev_port;
 127                 int r;
 128
 129                 if ((name[0] == '.') &&
 130                     ((name[1] == '\0') ||
 131                      ((name[1] == '.') && (name[2] == '\0'))))
 132                         continue;
 133
 134                 MKSTR(path, "%s/device/net/%s/%s",
 135                       priv->ibdev_path, name,
 136                       (dev_type ? "dev_id" : "dev_port"));
 137
 138                 file = fopen(path, "rb");
 139                 if (file == NULL) {
 140                         if (errno != ENOENT)
 141                                 continue;
 142                         /*
 143                          * Switch to dev_id when dev_port does not exist as
 144                          * is the case with Linux kernel versions < 3.15.
 145                          */
 146 try_dev_id:
 147                         match[0] = '\0';
 148                         if (dev_type)
 149                                 break;
 150                         dev_type = 1;
 151                         dev_port_prev = ~0u;
 152                         rewinddir(dir);
 153                         continue;
 154                 }
 155                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 156                 fclose(file);
 157                 if (r != 1)
 158                         continue;
 159                 /*
 160                  * Switch to dev_id when dev_port returns the same value for
 161                  * all ports. May happen when using a MOFED release older than
 162                  * 3.0 with a Linux kernel >= 3.15.
 163                  */
 164                 if (dev_port == dev_port_prev)
 165                         goto try_dev_id;
 166                 dev_port_prev = dev_port;
 167                 if (dev_port == (priv->port - 1u))
 168                         snprintf(match, sizeof(match), "%s", name);
 169         }
 170         closedir(dir);
 171         if (match[0] == '\0')
 172                 return -1;
 173         strncpy(*ifname, match, sizeof(*ifname));
 174         return 0;
 175 }
 176
 177 /**
 178  * Perform ifreq ioctl() on associated Ethernet device.
 179  *
 180  * @param[in] dev
 181  *   Pointer to Ethernet device.
 182  * @param req
 183  *   Request number to pass to ioctl().
 184  * @param[out] ifr
 185  *   Interface request structure output buffer.
 186  *
 187  * @return
 188  *   0 on success, -1 on failure and errno is set.
 189  */
 190 int
 191 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 192 {
 193         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 194         int ret = -1;
 195
 196         if (sock == -1)
 197                 return ret;
 198         if (mlx5_get_ifname(dev, &ifr->ifr_name) == 0)
 199                 ret = ioctl(sock, req, ifr);
 200         close(sock);
 201         return ret;
 202 }
 203
 204 /**
 205  * Get device MTU.
 206  *
 207  * @param dev
 208  *   Pointer to Ethernet device.
 209  * @param[out] mtu
 210  *   MTU value output buffer.
 211  *
 212  * @return
 213  *   0 on success, -1 on failure and errno is set.
 214  */
 215 int
 216 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 217 {
 218         struct ifreq request;
 219         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 220
 221         if (ret)
 222                 return ret;
 223         *mtu = request.ifr_mtu;
 224         return 0;
 225 }
 226
 227 /**
 228  * Set device MTU.
 229  *
 230  * @param dev
 231  *   Pointer to Ethernet device.
 232  * @param mtu
 233  *   MTU value to set.
 234  *
 235  * @return
 236  *   0 on success, -1 on failure and errno is set.
 237  */
 238 static int
 239 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 240 {
 241         struct ifreq request = { .ifr_mtu = mtu, };
 242
 243         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 244 }
 245
 246 /**
 247  * Set device flags.
 248  *
 249  * @param dev
 250  *   Pointer to Ethernet device.
 251  * @param keep
 252  *   Bitmask for flags that must remain untouched.
 253  * @param flags
 254  *   Bitmask for flags to modify.
 255  *
 256  * @return
 257  *   0 on success, -1 on failure and errno is set.
 258  */
 259 int
 260 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 261 {
 262         struct ifreq request;
 263         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 264
 265         if (ret)
 266                 return ret;
 267         request.ifr_flags &= keep;
 268         request.ifr_flags |= flags & ~keep;
 269         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 270 }
 271
 272 /**
 273  * DPDK callback for Ethernet device configuration.
 274  *
 275  * @param dev
 276  *   Pointer to Ethernet device structure.
 277  *
 278  * @return
 279  *   0 on success, negative errno value on failure.
 280  */
 281 int
 282 mlx5_dev_configure(struct rte_eth_dev *dev)
 283 {
 284         struct priv *priv = dev->data->dev_private;
 285         unsigned int rxqs_n = dev->data->nb_rx_queues;
 286         unsigned int txqs_n = dev->data->nb_tx_queues;
 287         unsigned int i;
 288         unsigned int j;
 289         unsigned int reta_idx_n;
 290         const uint8_t use_app_rss_key =
 291                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 292         uint64_t supp_tx_offloads = mlx5_get_tx_port_offloads(dev);
 293         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 294         uint64_t supp_rx_offloads =
 295                 (mlx5_get_rx_port_offloads() |
 296                  mlx5_get_rx_queue_offloads(dev));
 297         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 298
 299         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 300                 ERROR("Some Tx offloads are not supported "
 301                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 302                       tx_offloads, supp_tx_offloads);
 303                 return ENOTSUP;
 304         }
 305         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 306                 ERROR("Some Rx offloads are not supported "
 307                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 308                       rx_offloads, supp_rx_offloads);
 309                 return ENOTSUP;
 310         }
 311         if (use_app_rss_key &&
 312             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 313              rss_hash_default_key_len)) {
 314                 /* MLX5 RSS only support 40bytes key. */
 315                 return EINVAL;
 316         }
 317         priv->rss_conf.rss_key =
 318                 rte_realloc(priv->rss_conf.rss_key,
 319                             rss_hash_default_key_len, 0);
 320         if (!priv->rss_conf.rss_key) {
 321                 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
 322                 return ENOMEM;
 323         }
 324         memcpy(priv->rss_conf.rss_key,
 325                use_app_rss_key ?
 326                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 327                rss_hash_default_key,
 328                rss_hash_default_key_len);
 329         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 330         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 331         priv->rxqs = (void *)dev->data->rx_queues;
 332         priv->txqs = (void *)dev->data->tx_queues;
 333         if (txqs_n != priv->txqs_n) {
 334                 INFO("%p: TX queues number update: %u -> %u",
 335                      (void *)dev, priv->txqs_n, txqs_n);
 336                 priv->txqs_n = txqs_n;
 337         }
 338         if (rxqs_n > priv->config.ind_table_max_size) {
 339                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 340                 return EINVAL;
 341         }
 342         if (rxqs_n == priv->rxqs_n)
 343                 return 0;
 344         INFO("%p: RX queues number update: %u -> %u",
 345              (void *)dev, priv->rxqs_n, rxqs_n);
 346         priv->rxqs_n = rxqs_n;
 347         /* If the requested number of RX queues is not a power of two, use the
 348          * maximum indirection table size for better balancing.
 349          * The result is always rounded to the next power of two. */
 350         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 351                                      priv->config.ind_table_max_size :
 352                                      rxqs_n));
 353         if (mlx5_rss_reta_index_resize(dev, reta_idx_n))
 354                 return ENOMEM;
 355         /* When the number of RX queues is not a power of two, the remaining
 356          * table entries are padded with reused WQs and hashes are not spread
 357          * uniformly. */
 358         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 359                 (*priv->reta_idx)[i] = j;
 360                 if (++j == rxqs_n)
 361                         j = 0;
 362         }
 363         return 0;
 364
 365 }
 366
 367 /**
 368  * DPDK callback to get information about the device.
 369  *
 370  * @param dev
 371  *   Pointer to Ethernet device structure.
 372  * @param[out] info
 373  *   Info structure output buffer.
 374  */
 375 void
 376 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 377 {
 378         struct priv *priv = dev->data->dev_private;
 379         struct mlx5_dev_config *config = &priv->config;
 380         unsigned int max;
 381         char ifname[IF_NAMESIZE];
 382
 383         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 384         /* FIXME: we should ask the device for these values. */
 385         info->min_rx_bufsize = 32;
 386         info->max_rx_pktlen = 65536;
 387         /*
 388          * Since we need one CQ per QP, the limit is the minimum number
 389          * between the two values.
 390          */
 391         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 392                       priv->device_attr.orig_attr.max_qp);
 393         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 394         if (max >= 65535)
 395                 max = 65535;
 396         info->max_rx_queues = max;
 397         info->max_tx_queues = max;
 398         info->max_mac_addrs = RTE_DIM(priv->mac);
 399         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 400         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 401                                  info->rx_queue_offload_capa);
 402         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 403         if (mlx5_get_ifname(dev, &ifname) == 0)
 404                 info->if_index = if_nametoindex(ifname);
 405         info->reta_size = priv->reta_idx_n ?
 406                 priv->reta_idx_n : config->ind_table_max_size;
 407         info->hash_key_size = priv->rss_conf.rss_key_len;
 408         info->speed_capa = priv->link_speed_capa;
 409         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 410 }
 411
 412 /**
 413  * Get supported packet types.
 414  *
 415  * @param dev
 416  *   Pointer to Ethernet device structure.
 417  *
 418  * @return
 419  *   A pointer to the supported Packet types array.
 420  */
 421 const uint32_t *
 422 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 423 {
 424         static const uint32_t ptypes[] = {
 425                 /* refers to rxq_cq_to_pkt_type() */
 426                 RTE_PTYPE_L2_ETHER,
 427                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 428                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 429                 RTE_PTYPE_L4_NONFRAG,
 430                 RTE_PTYPE_L4_FRAG,
 431                 RTE_PTYPE_L4_TCP,
 432                 RTE_PTYPE_L4_UDP,
 433                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 434                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 435                 RTE_PTYPE_INNER_L4_NONFRAG,
 436                 RTE_PTYPE_INNER_L4_FRAG,
 437                 RTE_PTYPE_INNER_L4_TCP,
 438                 RTE_PTYPE_INNER_L4_UDP,
 439                 RTE_PTYPE_UNKNOWN
 440         };
 441
 442         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 443             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 444                 return ptypes;
 445         return NULL;
 446 }
 447
 448 /**
 449  * DPDK callback to retrieve physical link information.
 450  *
 451  * @param dev
 452  *   Pointer to Ethernet device structure.
 453  *
 454  * @return
 455  *   0 on success, -1 on error.
 456  */
 457 static int
 458 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
 459 {
 460         struct priv *priv = dev->data->dev_private;
 461         struct ethtool_cmd edata = {
 462                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 463         };
 464         struct ifreq ifr;
 465         struct rte_eth_link dev_link;
 466         int link_speed = 0;
 467
 468         if (mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr)) {
 469                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 470                 return -1;
 471         }
 472         memset(&dev_link, 0, sizeof(dev_link));
 473         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 474                                 (ifr.ifr_flags & IFF_RUNNING));
 475         ifr.ifr_data = (void *)&edata;
 476         if (mlx5_ifreq(dev, SIOCETHTOOL, &ifr)) {
 477                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 478                      strerror(errno));
 479                 return -1;
 480         }
 481         link_speed = ethtool_cmd_speed(&edata);
 482         if (link_speed == -1)
 483                 dev_link.link_speed = 0;
 484         else
 485                 dev_link.link_speed = link_speed;
 486         priv->link_speed_capa = 0;
 487         if (edata.supported & SUPPORTED_Autoneg)
 488                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 489         if (edata.supported & (SUPPORTED_1000baseT_Full |
 490                                SUPPORTED_1000baseKX_Full))
 491                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 492         if (edata.supported & SUPPORTED_10000baseKR_Full)
 493                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 494         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 495                                SUPPORTED_40000baseCR4_Full |
 496                                SUPPORTED_40000baseSR4_Full |
 497                                SUPPORTED_40000baseLR4_Full))
 498                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 499         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 500                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 501         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 502                         ETH_LINK_SPEED_FIXED);
 503         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 504                 /* Link status changed. */
 505                 dev->data->dev_link = dev_link;
 506                 return 0;
 507         }
 508         /* Link status is still the same. */
 509         return -1;
 510 }
 511
 512 /**
 513  * Retrieve physical link information (unlocked version using new ioctl).
 514  *
 515  * @param dev
 516  *   Pointer to Ethernet device structure.
 517  *
 518  * @return
 519  *   0 on success, -1 on error.
 520  */
 521 static int
 522 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
 523 {
 524         struct priv *priv = dev->data->dev_private;
 525         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 526         struct ifreq ifr;
 527         struct rte_eth_link dev_link;
 528         uint64_t sc;
 529
 530         if (mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr)) {
 531                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 532                 return -1;
 533         }
 534         memset(&dev_link, 0, sizeof(dev_link));
 535         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 536                                 (ifr.ifr_flags & IFF_RUNNING));
 537         ifr.ifr_data = (void *)&gcmd;
 538         if (mlx5_ifreq(dev, SIOCETHTOOL, &ifr)) {
 539                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 540                       strerror(errno));
 541                 return -1;
 542         }
 543         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 544
 545         alignas(struct ethtool_link_settings)
 546         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 547                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 548         struct ethtool_link_settings *ecmd = (void *)data;
 549
 550         *ecmd = gcmd;
 551         ifr.ifr_data = (void *)ecmd;
 552         if (mlx5_ifreq(dev, SIOCETHTOOL, &ifr)) {
 553                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 554                       strerror(errno));
 555                 return -1;
 556         }
 557         dev_link.link_speed = ecmd->speed;
 558         sc = ecmd->link_mode_masks[0] |
 559                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 560         priv->link_speed_capa = 0;
 561         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 562                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 563         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 564                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 565                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 566         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 567                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 568                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 569                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 570         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 571                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 572                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 573         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 574                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 575                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 576                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 577                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 578         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 579                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 580                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 581                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 582                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 583         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 584                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 585                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 586                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 587         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 588                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 589                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 590         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 591                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 592                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 593                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 594                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 595         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 596                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 597         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 598                                   ETH_LINK_SPEED_FIXED);
 599         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 600                 /* Link status changed. */
 601                 dev->data->dev_link = dev_link;
 602                 return 0;
 603         }
 604         /* Link status is still the same. */
 605         return -1;
 606 }
 607
 608 /**
 609  * Enable receiving and transmitting traffic.
 610  *
 611  * @param dev
 612  *   Pointer to Ethernet device.
 613  */
 614 static void
 615 mlx5_link_start(struct rte_eth_dev *dev)
 616 {
 617         struct priv *priv = dev->data->dev_private;
 618         int err;
 619
 620         dev->tx_pkt_burst = mlx5_select_tx_function(dev);
 621         dev->rx_pkt_burst = mlx5_select_rx_function(dev);
 622         err = mlx5_traffic_enable(dev);
 623         if (err)
 624                 ERROR("%p: error occurred while configuring control flows: %s",
 625                       (void *)dev, strerror(err));
 626         err = mlx5_flow_start(dev, &priv->flows);
 627         if (err)
 628                 ERROR("%p: error occurred while configuring flows: %s",
 629                       (void *)dev, strerror(err));
 630 }
 631
 632 /**
 633  * Disable receiving and transmitting traffic.
 634  *
 635  * @param dev
 636  *   Pointer to Ethernet device.
 637  */
 638 static void
 639 mlx5_link_stop(struct rte_eth_dev *dev)
 640 {
 641         struct priv *priv = dev->data->dev_private;
 642
 643         mlx5_flow_stop(dev, &priv->flows);
 644         mlx5_traffic_disable(dev);
 645         dev->rx_pkt_burst = removed_rx_burst;
 646         dev->tx_pkt_burst = removed_tx_burst;
 647 }
 648
 649 /**
 650  * Querying the link status till it changes to the desired state.
 651  * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
 652  *
 653  * @param dev
 654  *   Pointer to Ethernet device.
 655  * @param status
 656  *   Link desired status.
 657  *
 658  * @return
 659  *   0 on success, negative errno value on failure.
 660  */
 661 int
 662 mlx5_force_link_status_change(struct rte_eth_dev *dev, int status)
 663 {
 664         int try = 0;
 665
 666         while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
 667                 mlx5_link_update(dev, 0);
 668                 if (dev->data->dev_link.link_status == status)
 669                         return 0;
 670                 try++;
 671                 sleep(1);
 672         }
 673         return -EAGAIN;
 674 }
 675
 676 /**
 677  * DPDK callback to retrieve physical link information.
 678  *
 679  * @param dev
 680  *   Pointer to Ethernet device structure.
 681  * @param wait_to_complete
 682  *   Wait for request completion (ignored).
 683  *
 684  * @return
 685  *   0 on success, -1 on error.
 686  */
 687 int
 688 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 689 {
 690         struct utsname utsname;
 691         int ver[3];
 692         int ret;
 693         struct rte_eth_link dev_link = dev->data->dev_link;
 694
 695         if (uname(&utsname) == -1 ||
 696             sscanf(utsname.release, "%d.%d.%d",
 697                    &ver[0], &ver[1], &ver[2]) != 3 ||
 698             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 699                 ret = mlx5_link_update_unlocked_gset(dev);
 700         else
 701                 ret = mlx5_link_update_unlocked_gs(dev);
 702         /* If lsc interrupt is disabled, should always be ready for traffic. */
 703         if (!dev->data->dev_conf.intr_conf.lsc) {
 704                 mlx5_link_start(dev);
 705                 return ret;
 706         }
 707         /* Re-select burst callbacks only if link status has been changed. */
 708         if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
 709                 if (dev->data->dev_link.link_status == ETH_LINK_UP)
 710                         mlx5_link_start(dev);
 711                 else
 712                         mlx5_link_stop(dev);
 713         }
 714         return ret;
 715 }
 716
 717 /**
 718  * DPDK callback to change the MTU.
 719  *
 720  * @param dev
 721  *   Pointer to Ethernet device structure.
 722  * @param in_mtu
 723  *   New MTU.
 724  *
 725  * @return
 726  *   0 on success, negative errno value on failure.
 727  */
 728 int
 729 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 730 {
 731         struct priv *priv = dev->data->dev_private;
 732         uint16_t kern_mtu;
 733         int ret = 0;
 734
 735         ret = mlx5_get_mtu(dev, &kern_mtu);
 736         if (ret)
 737                 goto out;
 738         /* Set kernel interface MTU first. */
 739         ret = mlx5_set_mtu(dev, mtu);
 740         if (ret)
 741                 goto out;
 742         ret = mlx5_get_mtu(dev, &kern_mtu);
 743         if (ret)
 744                 goto out;
 745         if (kern_mtu == mtu) {
 746                 priv->mtu = mtu;
 747                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
 748         }
 749         return 0;
 750 out:
 751         ret = errno;
 752         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
 753              strerror(ret));
 754         assert(ret >= 0);
 755         return -ret;
 756 }
 757
 758 /**
 759  * DPDK callback to get flow control status.
 760  *
 761  * @param dev
 762  *   Pointer to Ethernet device structure.
 763  * @param[out] fc_conf
 764  *   Flow control output buffer.
 765  *
 766  * @return
 767  *   0 on success, negative errno value on failure.
 768  */
 769 int
 770 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 771 {
 772         struct ifreq ifr;
 773         struct ethtool_pauseparam ethpause = {
 774                 .cmd = ETHTOOL_GPAUSEPARAM
 775         };
 776         int ret;
 777
 778         ifr.ifr_data = (void *)&ethpause;
 779         if (mlx5_ifreq(dev, SIOCETHTOOL, &ifr)) {
 780                 ret = errno;
 781                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed: %s",
 782                      strerror(ret));
 783                 goto out;
 784         }
 785         fc_conf->autoneg = ethpause.autoneg;
 786         if (ethpause.rx_pause && ethpause.tx_pause)
 787                 fc_conf->mode = RTE_FC_FULL;
 788         else if (ethpause.rx_pause)
 789                 fc_conf->mode = RTE_FC_RX_PAUSE;
 790         else if (ethpause.tx_pause)
 791                 fc_conf->mode = RTE_FC_TX_PAUSE;
 792         else
 793                 fc_conf->mode = RTE_FC_NONE;
 794         ret = 0;
 795 out:
 796         assert(ret >= 0);
 797         return -ret;
 798 }
 799
 800 /**
 801  * DPDK callback to modify flow control parameters.
 802  *
 803  * @param dev
 804  *   Pointer to Ethernet device structure.
 805  * @param[in] fc_conf
 806  *   Flow control parameters.
 807  *
 808  * @return
 809  *   0 on success, negative errno value on failure.
 810  */
 811 int
 812 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 813 {
 814         struct ifreq ifr;
 815         struct ethtool_pauseparam ethpause = {
 816                 .cmd = ETHTOOL_SPAUSEPARAM
 817         };
 818         int ret;
 819
 820         ifr.ifr_data = (void *)&ethpause;
 821         ethpause.autoneg = fc_conf->autoneg;
 822         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 823             (fc_conf->mode & RTE_FC_RX_PAUSE))
 824                 ethpause.rx_pause = 1;
 825         else
 826                 ethpause.rx_pause = 0;
 827
 828         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 829             (fc_conf->mode & RTE_FC_TX_PAUSE))
 830                 ethpause.tx_pause = 1;
 831         else
 832                 ethpause.tx_pause = 0;
 833         if (mlx5_ifreq(dev, SIOCETHTOOL, &ifr)) {
 834                 ret = errno;
 835                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 836                      " failed: %s",
 837                      strerror(ret));
 838                 goto out;
 839         }
 840         ret = 0;
 841 out:
 842         assert(ret >= 0);
 843         return -ret;
 844 }
 845
 846 /**
 847  * Get PCI information from struct ibv_device.
 848  *
 849  * @param device
 850  *   Pointer to Ethernet device structure.
 851  * @param[out] pci_addr
 852  *   PCI bus address output buffer.
 853  *
 854  * @return
 855  *   0 on success, -1 on failure and errno is set.
 856  */
 857 int
 858 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 859                             struct rte_pci_addr *pci_addr)
 860 {
 861         FILE *file;
 862         char line[32];
 863         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 864
 865         file = fopen(path, "rb");
 866         if (file == NULL)
 867                 return -1;
 868         while (fgets(line, sizeof(line), file) == line) {
 869                 size_t len = strlen(line);
 870                 int ret;
 871
 872                 /* Truncate long lines. */
 873                 if (len == (sizeof(line) - 1))
 874                         while (line[(len - 1)] != '\n') {
 875                                 ret = fgetc(file);
 876                                 if (ret == EOF)
 877                                         break;
 878                                 line[(len - 1)] = ret;
 879                         }
 880                 /* Extract information. */
 881                 if (sscanf(line,
 882                            "PCI_SLOT_NAME="
 883                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 884                            &pci_addr->domain,
 885                            &pci_addr->bus,
 886                            &pci_addr->devid,
 887                            &pci_addr->function) == 4) {
 888                         ret = 0;
 889                         break;
 890                 }
 891         }
 892         fclose(file);
 893         return 0;
 894 }
 895
 896 /**
 897  * Update the link status.
 898  *
 899  * @param dev
 900  *   Pointer to Ethernet device.
 901  *
 902  * @return
 903  *   Zero if the callback process can be called immediately.
 904  */
 905 static int
 906 mlx5_link_status_update(struct rte_eth_dev *dev)
 907 {
 908         struct priv *priv = dev->data->dev_private;
 909         struct rte_eth_link *link = &dev->data->dev_link;
 910
 911         mlx5_link_update(dev, 0);
 912         if (((link->link_speed == 0) && link->link_status) ||
 913                 ((link->link_speed != 0) && !link->link_status)) {
 914                 /*
 915                  * Inconsistent status. Event likely occurred before the
 916                  * kernel netdevice exposes the new status.
 917                  */
 918                 if (!priv->pending_alarm) {
 919                         priv->pending_alarm = 1;
 920                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
 921                                           mlx5_dev_link_status_handler,
 922                                           priv->dev);
 923                 }
 924                 return 1;
 925         } else if (unlikely(priv->pending_alarm)) {
 926                 /* Link interrupt occurred while alarm is already scheduled. */
 927                 priv->pending_alarm = 0;
 928                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
 929         }
 930         return 0;
 931 }
 932
 933 /**
 934  * Device status handler.
 935  *
 936  * @param dev
 937  *   Pointer to Ethernet device.
 938  * @param events
 939  *   Pointer to event flags holder.
 940  *
 941  * @return
 942  *   Events bitmap of callback process which can be called immediately.
 943  */
 944 static uint32_t
 945 mlx5_dev_status_handler(struct rte_eth_dev *dev)
 946 {
 947         struct priv *priv = dev->data->dev_private;
 948         struct ibv_async_event event;
 949         uint32_t ret = 0;
 950
 951         /* Read all message and acknowledge them. */
 952         for (;;) {
 953                 if (mlx5_glue->get_async_event(priv->ctx, &event))
 954                         break;
 955                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
 956                         event.event_type == IBV_EVENT_PORT_ERR) &&
 957                         (dev->data->dev_conf.intr_conf.lsc == 1))
 958                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
 959                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
 960                         dev->data->dev_conf.intr_conf.rmv == 1)
 961                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
 962                 else
 963                         DEBUG("event type %d on port %d not handled",
 964                               event.event_type, event.element.port_num);
 965                 mlx5_glue->ack_async_event(&event);
 966         }
 967         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
 968                 if (mlx5_link_status_update(dev))
 969                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
 970         return ret;
 971 }
 972
 973 /**
 974  * Handle delayed link status event.
 975  *
 976  * @param arg
 977  *   Registered argument.
 978  */
 979 void
 980 mlx5_dev_link_status_handler(void *arg)
 981 {
 982         struct rte_eth_dev *dev = arg;
 983         struct priv *priv = dev->data->dev_private;
 984         int ret;
 985
 986         priv->pending_alarm = 0;
 987         ret = mlx5_link_status_update(dev);
 988         if (!ret)
 989                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
 990 }
 991
 992 /**
 993  * Handle interrupts from the NIC.
 994  *
 995  * @param[in] intr_handle
 996  *   Interrupt handler.
 997  * @param cb_arg
 998  *   Callback argument.
 999  */
1000 void
1001 mlx5_dev_interrupt_handler(void *cb_arg)
1002 {
1003         struct rte_eth_dev *dev = cb_arg;
1004         uint32_t events;
1005
1006         events = mlx5_dev_status_handler(dev);
1007         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1008                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1009         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1010                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1011 }
1012
1013 /**
1014  * Handle interrupts from the socket.
1015  *
1016  * @param cb_arg
1017  *   Callback argument.
1018  */
1019 static void
1020 mlx5_dev_handler_socket(void *cb_arg)
1021 {
1022         struct rte_eth_dev *dev = cb_arg;
1023
1024         mlx5_socket_handle(dev);
1025 }
1026
1027 /**
1028  * Uninstall interrupt handler.
1029  *
1030  * @param dev
1031  *   Pointer to Ethernet device.
1032  */
1033 void
1034 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1035 {
1036         struct priv *priv = dev->data->dev_private;
1037
1038         if (dev->data->dev_conf.intr_conf.lsc ||
1039             dev->data->dev_conf.intr_conf.rmv)
1040                 rte_intr_callback_unregister(&priv->intr_handle,
1041                                              mlx5_dev_interrupt_handler, dev);
1042         if (priv->primary_socket)
1043                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1044                                              mlx5_dev_handler_socket, dev);
1045         if (priv->pending_alarm) {
1046                 priv->pending_alarm = 0;
1047                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1048         }
1049         priv->intr_handle.fd = 0;
1050         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1051         priv->intr_handle_socket.fd = 0;
1052         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1053 }
1054
1055 /**
1056  * Install interrupt handler.
1057  *
1058  * @param dev
1059  *   Pointer to Ethernet device.
1060  */
1061 void
1062 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1063 {
1064         struct priv *priv = dev->data->dev_private;
1065         int rc, flags;
1066
1067         assert(priv->ctx->async_fd > 0);
1068         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1069         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1070         if (rc < 0) {
1071                 INFO("failed to change file descriptor async event queue");
1072                 dev->data->dev_conf.intr_conf.lsc = 0;
1073                 dev->data->dev_conf.intr_conf.rmv = 0;
1074         }
1075         if (dev->data->dev_conf.intr_conf.lsc ||
1076             dev->data->dev_conf.intr_conf.rmv) {
1077                 priv->intr_handle.fd = priv->ctx->async_fd;
1078                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1079                 rte_intr_callback_register(&priv->intr_handle,
1080                                            mlx5_dev_interrupt_handler, dev);
1081         }
1082         rc = mlx5_socket_init(dev);
1083         if (!rc && priv->primary_socket) {
1084                 priv->intr_handle_socket.fd = priv->primary_socket;
1085                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1086                 rte_intr_callback_register(&priv->intr_handle_socket,
1087                                            mlx5_dev_handler_socket, dev);
1088         }
1089 }
1090
1091 /**
1092  * DPDK callback to bring the link DOWN.
1093  *
1094  * @param dev
1095  *   Pointer to Ethernet device structure.
1096  *
1097  * @return
1098  *   0 on success, errno value on failure.
1099  */
1100 int
1101 mlx5_set_link_down(struct rte_eth_dev *dev)
1102 {
1103         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1104 }
1105
1106 /**
1107  * DPDK callback to bring the link UP.
1108  *
1109  * @param dev
1110  *   Pointer to Ethernet device structure.
1111  *
1112  * @return
1113  *   0 on success, errno value on failure.
1114  */
1115 int
1116 mlx5_set_link_up(struct rte_eth_dev *dev)
1117 {
1118         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1119 }
1120
1121 /**
1122  * Configure the TX function to use.
1123  *
1124  * @param dev
1125  *   Pointer to private data structure.
1126  *
1127  * @return
1128  *   Pointer to selected Tx burst function.
1129  */
1130 eth_tx_burst_t
1131 mlx5_select_tx_function(struct rte_eth_dev *dev)
1132 {
1133         struct priv *priv = dev->data->dev_private;
1134         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1135         struct mlx5_dev_config *config = &priv->config;
1136         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1137         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1138                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1139                                     DEV_TX_OFFLOAD_GRE_TNL_TSO));
1140         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1141
1142         assert(priv != NULL);
1143         /* Select appropriate TX function. */
1144         if (vlan_insert || tso)
1145                 return tx_pkt_burst;
1146         if (config->mps == MLX5_MPW_ENHANCED) {
1147                 if (mlx5_check_vec_tx_support(dev) > 0) {
1148                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1149                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1150                         else
1151                                 tx_pkt_burst = mlx5_tx_burst_vec;
1152                         DEBUG("selected Enhanced MPW TX vectorized function");
1153                 } else {
1154                         tx_pkt_burst = mlx5_tx_burst_empw;
1155                         DEBUG("selected Enhanced MPW TX function");
1156                 }
1157         } else if (config->mps && (config->txq_inline > 0)) {
1158                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1159                 DEBUG("selected MPW inline TX function");
1160         } else if (config->mps) {
1161                 tx_pkt_burst = mlx5_tx_burst_mpw;
1162                 DEBUG("selected MPW TX function");
1163         }
1164         return tx_pkt_burst;
1165 }
1166
1167 /**
1168  * Configure the RX function to use.
1169  *
1170  * @param dev
1171  *   Pointer to private data structure.
1172  *
1173  * @return
1174  *   Pointer to selected Rx burst function.
1175  */
1176 eth_rx_burst_t
1177 mlx5_select_rx_function(struct rte_eth_dev *dev)
1178 {
1179         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1180
1181         assert(dev != NULL);
1182         if (mlx5_check_vec_rx_support(dev) > 0) {
1183                 rx_pkt_burst = mlx5_rx_burst_vec;
1184                 DEBUG("selected RX vectorized function");
1185         }
1186         return rx_pkt_burst;
1187 }
1188
1189 /**
1190  * Check if mlx5 device was removed.
1191  *
1192  * @param dev
1193  *   Pointer to Ethernet device structure.
1194  *
1195  * @return
1196  *   1 when device is removed, otherwise 0.
1197  */
1198 int
1199 mlx5_is_removed(struct rte_eth_dev *dev)
1200 {
1201         struct ibv_device_attr device_attr;
1202         struct priv *priv = dev->data->dev_private;
1203
1204         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1205                 return 1;
1206         return 0;
1207 }