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] priv
  99  *   Pointer to private structure.
 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 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
 108 {
 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                         return -1;
 121         }
 122         while ((dent = readdir(dir)) != NULL) {
 123                 char *name = dent->d_name;
 124                 FILE *file;
 125                 unsigned int dev_port;
 126                 int r;
 127
 128                 if ((name[0] == '.') &&
 129                     ((name[1] == '\0') ||
 130                      ((name[1] == '.') && (name[2] == '\0'))))
 131                         continue;
 132
 133                 MKSTR(path, "%s/device/net/%s/%s",
 134                       priv->ibdev_path, name,
 135                       (dev_type ? "dev_id" : "dev_port"));
 136
 137                 file = fopen(path, "rb");
 138                 if (file == NULL) {
 139                         if (errno != ENOENT)
 140                                 continue;
 141                         /*
 142                          * Switch to dev_id when dev_port does not exist as
 143                          * is the case with Linux kernel versions < 3.15.
 144                          */
 145 try_dev_id:
 146                         match[0] = '\0';
 147                         if (dev_type)
 148                                 break;
 149                         dev_type = 1;
 150                         dev_port_prev = ~0u;
 151                         rewinddir(dir);
 152                         continue;
 153                 }
 154                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 155                 fclose(file);
 156                 if (r != 1)
 157                         continue;
 158                 /*
 159                  * Switch to dev_id when dev_port returns the same value for
 160                  * all ports. May happen when using a MOFED release older than
 161                  * 3.0 with a Linux kernel >= 3.15.
 162                  */
 163                 if (dev_port == dev_port_prev)
 164                         goto try_dev_id;
 165                 dev_port_prev = dev_port;
 166                 if (dev_port == (priv->port - 1u))
 167                         snprintf(match, sizeof(match), "%s", name);
 168         }
 169         closedir(dir);
 170         if (match[0] == '\0')
 171                 return -1;
 172         strncpy(*ifname, match, sizeof(*ifname));
 173         return 0;
 174 }
 175
 176 /**
 177  * Perform ifreq ioctl() on associated Ethernet device.
 178  *
 179  * @param[in] priv
 180  *   Pointer to private structure.
 181  * @param req
 182  *   Request number to pass to ioctl().
 183  * @param[out] ifr
 184  *   Interface request structure output buffer.
 185  *
 186  * @return
 187  *   0 on success, -1 on failure and errno is set.
 188  */
 189 int
 190 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
 191 {
 192         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 193         int ret = -1;
 194
 195         if (sock == -1)
 196                 return ret;
 197         if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
 198                 ret = ioctl(sock, req, ifr);
 199         close(sock);
 200         return ret;
 201 }
 202
 203 /**
 204  * Get device MTU.
 205  *
 206  * @param priv
 207  *   Pointer to private structure.
 208  * @param[out] mtu
 209  *   MTU value output buffer.
 210  *
 211  * @return
 212  *   0 on success, -1 on failure and errno is set.
 213  */
 214 int
 215 priv_get_mtu(struct priv *priv, uint16_t *mtu)
 216 {
 217         struct ifreq request;
 218         int ret = priv_ifreq(priv, SIOCGIFMTU, &request);
 219
 220         if (ret)
 221                 return ret;
 222         *mtu = request.ifr_mtu;
 223         return 0;
 224 }
 225
 226 /**
 227  * Set device MTU.
 228  *
 229  * @param priv
 230  *   Pointer to private structure.
 231  * @param mtu
 232  *   MTU value to set.
 233  *
 234  * @return
 235  *   0 on success, -1 on failure and errno is set.
 236  */
 237 static int
 238 priv_set_mtu(struct priv *priv, uint16_t mtu)
 239 {
 240         struct ifreq request = { .ifr_mtu = mtu, };
 241
 242         return priv_ifreq(priv, SIOCSIFMTU, &request);
 243 }
 244
 245 /**
 246  * Set device flags.
 247  *
 248  * @param priv
 249  *   Pointer to private structure.
 250  * @param keep
 251  *   Bitmask for flags that must remain untouched.
 252  * @param flags
 253  *   Bitmask for flags to modify.
 254  *
 255  * @return
 256  *   0 on success, -1 on failure and errno is set.
 257  */
 258 int
 259 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
 260 {
 261         struct ifreq request;
 262         int ret = priv_ifreq(priv, SIOCGIFFLAGS, &request);
 263
 264         if (ret)
 265                 return ret;
 266         request.ifr_flags &= keep;
 267         request.ifr_flags |= flags & ~keep;
 268         return priv_ifreq(priv, SIOCSIFFLAGS, &request);
 269 }
 270
 271 /**
 272  * Ethernet device configuration.
 273  *
 274  * Prepare the driver for a given number of TX and RX queues.
 275  *
 276  * @param dev
 277  *   Pointer to Ethernet device structure.
 278  *
 279  * @return
 280  *   0 on success, errno value on failure.
 281  */
 282 static int
 283 dev_configure(struct rte_eth_dev *dev)
 284 {
 285         struct priv *priv = dev->data->dev_private;
 286         unsigned int rxqs_n = dev->data->nb_rx_queues;
 287         unsigned int txqs_n = dev->data->nb_tx_queues;
 288         unsigned int i;
 289         unsigned int j;
 290         unsigned int reta_idx_n;
 291         const uint8_t use_app_rss_key =
 292                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 293         uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv);
 294         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 295         uint64_t supp_rx_offloads =
 296                 (mlx5_priv_get_rx_port_offloads(priv) |
 297                  mlx5_priv_get_rx_queue_offloads(priv));
 298         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 299
 300         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 301                 ERROR("Some Tx offloads are not supported "
 302                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 303                       tx_offloads, supp_tx_offloads);
 304                 return ENOTSUP;
 305         }
 306         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 307                 ERROR("Some Rx offloads are not supported "
 308                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 309                       rx_offloads, supp_rx_offloads);
 310                 return ENOTSUP;
 311         }
 312         if (use_app_rss_key &&
 313             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 314              rss_hash_default_key_len)) {
 315                 /* MLX5 RSS only support 40bytes key. */
 316                 return EINVAL;
 317         }
 318         priv->rss_conf.rss_key =
 319                 rte_realloc(priv->rss_conf.rss_key,
 320                             rss_hash_default_key_len, 0);
 321         if (!priv->rss_conf.rss_key) {
 322                 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
 323                 return ENOMEM;
 324         }
 325         memcpy(priv->rss_conf.rss_key,
 326                use_app_rss_key ?
 327                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 328                rss_hash_default_key,
 329                rss_hash_default_key_len);
 330         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 331         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 332         priv->rxqs = (void *)dev->data->rx_queues;
 333         priv->txqs = (void *)dev->data->tx_queues;
 334         if (txqs_n != priv->txqs_n) {
 335                 INFO("%p: TX queues number update: %u -> %u",
 336                      (void *)dev, priv->txqs_n, txqs_n);
 337                 priv->txqs_n = txqs_n;
 338         }
 339         if (rxqs_n > priv->config.ind_table_max_size) {
 340                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 341                 return EINVAL;
 342         }
 343         if (rxqs_n == priv->rxqs_n)
 344                 return 0;
 345         INFO("%p: RX queues number update: %u -> %u",
 346              (void *)dev, priv->rxqs_n, rxqs_n);
 347         priv->rxqs_n = rxqs_n;
 348         /* If the requested number of RX queues is not a power of two, use the
 349          * maximum indirection table size for better balancing.
 350          * The result is always rounded to the next power of two. */
 351         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 352                                      priv->config.ind_table_max_size :
 353                                      rxqs_n));
 354         if (priv_rss_reta_index_resize(priv, reta_idx_n))
 355                 return ENOMEM;
 356         /* When the number of RX queues is not a power of two, the remaining
 357          * table entries are padded with reused WQs and hashes are not spread
 358          * uniformly. */
 359         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 360                 (*priv->reta_idx)[i] = j;
 361                 if (++j == rxqs_n)
 362                         j = 0;
 363         }
 364         return 0;
 365 }
 366
 367 /**
 368  * DPDK callback for Ethernet device configuration.
 369  *
 370  * @param dev
 371  *   Pointer to Ethernet device structure.
 372  *
 373  * @return
 374  *   0 on success, negative errno value on failure.
 375  */
 376 int
 377 mlx5_dev_configure(struct rte_eth_dev *dev)
 378 {
 379         struct priv *priv = dev->data->dev_private;
 380         int ret;
 381
 382         priv_lock(priv);
 383         ret = dev_configure(dev);
 384         assert(ret >= 0);
 385         priv_unlock(priv);
 386         return -ret;
 387 }
 388
 389 /**
 390  * DPDK callback to get information about the device.
 391  *
 392  * @param dev
 393  *   Pointer to Ethernet device structure.
 394  * @param[out] info
 395  *   Info structure output buffer.
 396  */
 397 void
 398 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 399 {
 400         struct priv *priv = dev->data->dev_private;
 401         struct mlx5_dev_config *config = &priv->config;
 402         unsigned int max;
 403         char ifname[IF_NAMESIZE];
 404
 405         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 406
 407         priv_lock(priv);
 408         /* FIXME: we should ask the device for these values. */
 409         info->min_rx_bufsize = 32;
 410         info->max_rx_pktlen = 65536;
 411         /*
 412          * Since we need one CQ per QP, the limit is the minimum number
 413          * between the two values.
 414          */
 415         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 416                       priv->device_attr.orig_attr.max_qp);
 417         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 418         if (max >= 65535)
 419                 max = 65535;
 420         info->max_rx_queues = max;
 421         info->max_tx_queues = max;
 422         info->max_mac_addrs = RTE_DIM(priv->mac);
 423         info->rx_queue_offload_capa =
 424                 mlx5_priv_get_rx_queue_offloads(priv);
 425         info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) |
 426                                  info->rx_queue_offload_capa);
 427         info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv);
 428         if (priv_get_ifname(priv, &ifname) == 0)
 429                 info->if_index = if_nametoindex(ifname);
 430         info->reta_size = priv->reta_idx_n ?
 431                 priv->reta_idx_n : config->ind_table_max_size;
 432         info->hash_key_size = priv->rss_conf.rss_key_len;
 433         info->speed_capa = priv->link_speed_capa;
 434         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 435         priv_unlock(priv);
 436 }
 437
 438 const uint32_t *
 439 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 440 {
 441         static const uint32_t ptypes[] = {
 442                 /* refers to rxq_cq_to_pkt_type() */
 443                 RTE_PTYPE_L2_ETHER,
 444                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 445                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 446                 RTE_PTYPE_L4_NONFRAG,
 447                 RTE_PTYPE_L4_FRAG,
 448                 RTE_PTYPE_L4_TCP,
 449                 RTE_PTYPE_L4_UDP,
 450                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 451                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 452                 RTE_PTYPE_INNER_L4_NONFRAG,
 453                 RTE_PTYPE_INNER_L4_FRAG,
 454                 RTE_PTYPE_INNER_L4_TCP,
 455                 RTE_PTYPE_INNER_L4_UDP,
 456                 RTE_PTYPE_UNKNOWN
 457         };
 458
 459         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 460             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 461                 return ptypes;
 462         return NULL;
 463 }
 464
 465 /**
 466  * DPDK callback to retrieve physical link information.
 467  *
 468  * @param dev
 469  *   Pointer to Ethernet device structure.
 470  */
 471 static int
 472 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev)
 473 {
 474         struct priv *priv = dev->data->dev_private;
 475         struct ethtool_cmd edata = {
 476                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 477         };
 478         struct ifreq ifr;
 479         struct rte_eth_link dev_link;
 480         int link_speed = 0;
 481
 482         /* priv_lock() is not taken to allow concurrent calls. */
 483
 484         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 485                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 486                 return -1;
 487         }
 488         memset(&dev_link, 0, sizeof(dev_link));
 489         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 490                                 (ifr.ifr_flags & IFF_RUNNING));
 491         ifr.ifr_data = (void *)&edata;
 492         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 493                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 494                      strerror(errno));
 495                 return -1;
 496         }
 497         link_speed = ethtool_cmd_speed(&edata);
 498         if (link_speed == -1)
 499                 dev_link.link_speed = 0;
 500         else
 501                 dev_link.link_speed = link_speed;
 502         priv->link_speed_capa = 0;
 503         if (edata.supported & SUPPORTED_Autoneg)
 504                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 505         if (edata.supported & (SUPPORTED_1000baseT_Full |
 506                                SUPPORTED_1000baseKX_Full))
 507                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 508         if (edata.supported & SUPPORTED_10000baseKR_Full)
 509                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 510         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 511                                SUPPORTED_40000baseCR4_Full |
 512                                SUPPORTED_40000baseSR4_Full |
 513                                SUPPORTED_40000baseLR4_Full))
 514                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 515         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 516                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 517         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 518                         ETH_LINK_SPEED_FIXED);
 519         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 520                 /* Link status changed. */
 521                 dev->data->dev_link = dev_link;
 522                 return 0;
 523         }
 524         /* Link status is still the same. */
 525         return -1;
 526 }
 527
 528 /**
 529  * Retrieve physical link information (unlocked version using new ioctl).
 530  *
 531  * @param dev
 532  *   Pointer to Ethernet device structure.
 533  */
 534 static int
 535 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev)
 536 {
 537         struct priv *priv = dev->data->dev_private;
 538         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 539         struct ifreq ifr;
 540         struct rte_eth_link dev_link;
 541         uint64_t sc;
 542
 543         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 544                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 545                 return -1;
 546         }
 547         memset(&dev_link, 0, sizeof(dev_link));
 548         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 549                                 (ifr.ifr_flags & IFF_RUNNING));
 550         ifr.ifr_data = (void *)&gcmd;
 551         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 552                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 553                       strerror(errno));
 554                 return -1;
 555         }
 556         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 557
 558         alignas(struct ethtool_link_settings)
 559         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 560                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 561         struct ethtool_link_settings *ecmd = (void *)data;
 562
 563         *ecmd = gcmd;
 564         ifr.ifr_data = (void *)ecmd;
 565         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 566                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 567                       strerror(errno));
 568                 return -1;
 569         }
 570         dev_link.link_speed = ecmd->speed;
 571         sc = ecmd->link_mode_masks[0] |
 572                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 573         priv->link_speed_capa = 0;
 574         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 575                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 576         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 577                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 578                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 579         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 580                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 581                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 582                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 583         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 584                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 585                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 586         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 587                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 588                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 589                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 590                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 591         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 592                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 593                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 594                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 595                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 596         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 597                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 598                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 599                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 600         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 601                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 602                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 603         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 604                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 605                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 606                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 607                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 608         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 609                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 610         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 611                                   ETH_LINK_SPEED_FIXED);
 612         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 613                 /* Link status changed. */
 614                 dev->data->dev_link = dev_link;
 615                 return 0;
 616         }
 617         /* Link status is still the same. */
 618         return -1;
 619 }
 620
 621 /**
 622  * Enable receiving and transmitting traffic.
 623  *
 624  * @param priv
 625  *   Pointer to private structure.
 626  */
 627 static void
 628 priv_link_start(struct priv *priv)
 629 {
 630         struct rte_eth_dev *dev = priv->dev;
 631         int err;
 632
 633         dev->tx_pkt_burst = priv_select_tx_function(priv, dev);
 634         dev->rx_pkt_burst = priv_select_rx_function(priv, dev);
 635         err = priv_dev_traffic_enable(priv, dev);
 636         if (err)
 637                 ERROR("%p: error occurred while configuring control flows: %s",
 638                       (void *)priv, strerror(err));
 639         err = priv_flow_start(priv, &priv->flows);
 640         if (err)
 641                 ERROR("%p: error occurred while configuring flows: %s",
 642                       (void *)priv, strerror(err));
 643 }
 644
 645 /**
 646  * Disable receiving and transmitting traffic.
 647  *
 648  * @param priv
 649  *   Pointer to private structure.
 650  */
 651 static void
 652 priv_link_stop(struct priv *priv)
 653 {
 654         struct rte_eth_dev *dev = priv->dev;
 655
 656         priv_flow_stop(priv, &priv->flows);
 657         priv_dev_traffic_disable(priv, dev);
 658         dev->rx_pkt_burst = removed_rx_burst;
 659         dev->tx_pkt_burst = removed_tx_burst;
 660 }
 661
 662 /**
 663  * Retrieve physical link information and update rx/tx_pkt_burst callbacks
 664  * accordingly.
 665  *
 666  * @param priv
 667  *   Pointer to private structure.
 668  * @param wait_to_complete
 669  *   Wait for request completion (ignored).
 670  */
 671 int
 672 priv_link_update(struct priv *priv, int wait_to_complete __rte_unused)
 673 {
 674         struct rte_eth_dev *dev = priv->dev;
 675         struct utsname utsname;
 676         int ver[3];
 677         int ret;
 678         struct rte_eth_link dev_link = dev->data->dev_link;
 679
 680         if (uname(&utsname) == -1 ||
 681             sscanf(utsname.release, "%d.%d.%d",
 682                    &ver[0], &ver[1], &ver[2]) != 3 ||
 683             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 684                 ret = mlx5_link_update_unlocked_gset(dev);
 685         else
 686                 ret = mlx5_link_update_unlocked_gs(dev);
 687         /* If lsc interrupt is disabled, should always be ready for traffic. */
 688         if (!dev->data->dev_conf.intr_conf.lsc) {
 689                 priv_link_start(priv);
 690                 return ret;
 691         }
 692         /* Re-select burst callbacks only if link status has been changed. */
 693         if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
 694                 if (dev->data->dev_link.link_status == ETH_LINK_UP)
 695                         priv_link_start(priv);
 696                 else
 697                         priv_link_stop(priv);
 698         }
 699         return ret;
 700 }
 701
 702 /**
 703  * Querying the link status till it changes to the desired state.
 704  * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
 705  *
 706  * @param priv
 707  *   Pointer to private structure.
 708  * @param status
 709  *   Link desired status.
 710  *
 711  * @return
 712  *   0 on success, negative errno value on failure.
 713  */
 714 int
 715 priv_force_link_status_change(struct priv *priv, int status)
 716 {
 717         int try = 0;
 718
 719         while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
 720                 priv_link_update(priv, 0);
 721                 if (priv->dev->data->dev_link.link_status == status)
 722                         return 0;
 723                 try++;
 724                 sleep(1);
 725         }
 726         return -EAGAIN;
 727 }
 728
 729 /**
 730  * DPDK callback to retrieve physical link information.
 731  *
 732  * @param dev
 733  *   Pointer to Ethernet device structure.
 734  * @param wait_to_complete
 735  *   Wait for request completion (ignored).
 736  */
 737 int
 738 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete __rte_unused)
 739 {
 740         struct priv *priv = dev->data->dev_private;
 741         int ret;
 742
 743         priv_lock(priv);
 744         ret = priv_link_update(priv, wait_to_complete);
 745         priv_unlock(priv);
 746         return ret;
 747 }
 748
 749 /**
 750  * DPDK callback to change the MTU.
 751  *
 752  * @param dev
 753  *   Pointer to Ethernet device structure.
 754  * @param in_mtu
 755  *   New MTU.
 756  *
 757  * @return
 758  *   0 on success, negative errno value on failure.
 759  */
 760 int
 761 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 762 {
 763         struct priv *priv = dev->data->dev_private;
 764         uint16_t kern_mtu;
 765         int ret = 0;
 766
 767         priv_lock(priv);
 768         ret = priv_get_mtu(priv, &kern_mtu);
 769         if (ret)
 770                 goto out;
 771         /* Set kernel interface MTU first. */
 772         ret = priv_set_mtu(priv, mtu);
 773         if (ret)
 774                 goto out;
 775         ret = priv_get_mtu(priv, &kern_mtu);
 776         if (ret)
 777                 goto out;
 778         if (kern_mtu == mtu) {
 779                 priv->mtu = mtu;
 780                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
 781         }
 782         priv_unlock(priv);
 783         return 0;
 784 out:
 785         ret = errno;
 786         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
 787              strerror(ret));
 788         priv_unlock(priv);
 789         assert(ret >= 0);
 790         return -ret;
 791 }
 792
 793 /**
 794  * DPDK callback to get flow control status.
 795  *
 796  * @param dev
 797  *   Pointer to Ethernet device structure.
 798  * @param[out] fc_conf
 799  *   Flow control output buffer.
 800  *
 801  * @return
 802  *   0 on success, negative errno value on failure.
 803  */
 804 int
 805 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 806 {
 807         struct priv *priv = dev->data->dev_private;
 808         struct ifreq ifr;
 809         struct ethtool_pauseparam ethpause = {
 810                 .cmd = ETHTOOL_GPAUSEPARAM
 811         };
 812         int ret;
 813
 814         ifr.ifr_data = (void *)&ethpause;
 815         priv_lock(priv);
 816         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 817                 ret = errno;
 818                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
 819                      " failed: %s",
 820                      strerror(ret));
 821                 goto out;
 822         }
 823
 824         fc_conf->autoneg = ethpause.autoneg;
 825         if (ethpause.rx_pause && ethpause.tx_pause)
 826                 fc_conf->mode = RTE_FC_FULL;
 827         else if (ethpause.rx_pause)
 828                 fc_conf->mode = RTE_FC_RX_PAUSE;
 829         else if (ethpause.tx_pause)
 830                 fc_conf->mode = RTE_FC_TX_PAUSE;
 831         else
 832                 fc_conf->mode = RTE_FC_NONE;
 833         ret = 0;
 834
 835 out:
 836         priv_unlock(priv);
 837         assert(ret >= 0);
 838         return -ret;
 839 }
 840
 841 /**
 842  * DPDK callback to modify flow control parameters.
 843  *
 844  * @param dev
 845  *   Pointer to Ethernet device structure.
 846  * @param[in] fc_conf
 847  *   Flow control parameters.
 848  *
 849  * @return
 850  *   0 on success, negative errno value on failure.
 851  */
 852 int
 853 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 854 {
 855         struct priv *priv = dev->data->dev_private;
 856         struct ifreq ifr;
 857         struct ethtool_pauseparam ethpause = {
 858                 .cmd = ETHTOOL_SPAUSEPARAM
 859         };
 860         int ret;
 861
 862         ifr.ifr_data = (void *)&ethpause;
 863         ethpause.autoneg = fc_conf->autoneg;
 864         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 865             (fc_conf->mode & RTE_FC_RX_PAUSE))
 866                 ethpause.rx_pause = 1;
 867         else
 868                 ethpause.rx_pause = 0;
 869
 870         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
 871             (fc_conf->mode & RTE_FC_TX_PAUSE))
 872                 ethpause.tx_pause = 1;
 873         else
 874                 ethpause.tx_pause = 0;
 875
 876         priv_lock(priv);
 877         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 878                 ret = errno;
 879                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
 880                      " failed: %s",
 881                      strerror(ret));
 882                 goto out;
 883         }
 884         ret = 0;
 885
 886 out:
 887         priv_unlock(priv);
 888         assert(ret >= 0);
 889         return -ret;
 890 }
 891
 892 /**
 893  * Get PCI information from struct ibv_device.
 894  *
 895  * @param device
 896  *   Pointer to Ethernet device structure.
 897  * @param[out] pci_addr
 898  *   PCI bus address output buffer.
 899  *
 900  * @return
 901  *   0 on success, -1 on failure and errno is set.
 902  */
 903 int
 904 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
 905                             struct rte_pci_addr *pci_addr)
 906 {
 907         FILE *file;
 908         char line[32];
 909         MKSTR(path, "%s/device/uevent", device->ibdev_path);
 910
 911         file = fopen(path, "rb");
 912         if (file == NULL)
 913                 return -1;
 914         while (fgets(line, sizeof(line), file) == line) {
 915                 size_t len = strlen(line);
 916                 int ret;
 917
 918                 /* Truncate long lines. */
 919                 if (len == (sizeof(line) - 1))
 920                         while (line[(len - 1)] != '\n') {
 921                                 ret = fgetc(file);
 922                                 if (ret == EOF)
 923                                         break;
 924                                 line[(len - 1)] = ret;
 925                         }
 926                 /* Extract information. */
 927                 if (sscanf(line,
 928                            "PCI_SLOT_NAME="
 929                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
 930                            &pci_addr->domain,
 931                            &pci_addr->bus,
 932                            &pci_addr->devid,
 933                            &pci_addr->function) == 4) {
 934                         ret = 0;
 935                         break;
 936                 }
 937         }
 938         fclose(file);
 939         return 0;
 940 }
 941
 942 /**
 943  * Update the link status.
 944  *
 945  * @param priv
 946  *   Pointer to private structure.
 947  *
 948  * @return
 949  *   Zero if the callback process can be called immediately.
 950  */
 951 static int
 952 priv_link_status_update(struct priv *priv)
 953 {
 954         struct rte_eth_link *link = &priv->dev->data->dev_link;
 955
 956         priv_link_update(priv, 0);
 957         if (((link->link_speed == 0) && link->link_status) ||
 958                 ((link->link_speed != 0) && !link->link_status)) {
 959                 /*
 960                  * Inconsistent status. Event likely occurred before the
 961                  * kernel netdevice exposes the new status.
 962                  */
 963                 if (!priv->pending_alarm) {
 964                         priv->pending_alarm = 1;
 965                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
 966                                           mlx5_dev_link_status_handler,
 967                                           priv->dev);
 968                 }
 969                 return 1;
 970         } else if (unlikely(priv->pending_alarm)) {
 971                 /* Link interrupt occurred while alarm is already scheduled. */
 972                 priv->pending_alarm = 0;
 973                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
 974         }
 975         return 0;
 976 }
 977
 978 /**
 979  * Device status handler.
 980  *
 981  * @param priv
 982  *   Pointer to private structure.
 983  * @param events
 984  *   Pointer to event flags holder.
 985  *
 986  * @return
 987  *   Events bitmap of callback process which can be called immediately.
 988  */
 989 static uint32_t
 990 priv_dev_status_handler(struct priv *priv)
 991 {
 992         struct ibv_async_event event;
 993         uint32_t ret = 0;
 994
 995         /* Read all message and acknowledge them. */
 996         for (;;) {
 997                 if (mlx5_glue->get_async_event(priv->ctx, &event))
 998                         break;
 999                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1000                         event.event_type == IBV_EVENT_PORT_ERR) &&
1001                         (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1002                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1003                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1004                         priv->dev->data->dev_conf.intr_conf.rmv == 1)
1005                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1006                 else
1007                         DEBUG("event type %d on port %d not handled",
1008                               event.event_type, event.element.port_num);
1009                 mlx5_glue->ack_async_event(&event);
1010         }
1011         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1012                 if (priv_link_status_update(priv))
1013                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1014         return ret;
1015 }
1016
1017 /**
1018  * Handle delayed link status event.
1019  *
1020  * @param arg
1021  *   Registered argument.
1022  */
1023 void
1024 mlx5_dev_link_status_handler(void *arg)
1025 {
1026         struct rte_eth_dev *dev = arg;
1027         struct priv *priv = dev->data->dev_private;
1028         int ret;
1029
1030         while (!priv_trylock(priv)) {
1031                 /* Alarm is being canceled. */
1032                 if (priv->pending_alarm == 0)
1033                         return;
1034                 rte_pause();
1035         }
1036         priv->pending_alarm = 0;
1037         ret = priv_link_status_update(priv);
1038         priv_unlock(priv);
1039         if (!ret)
1040                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1041 }
1042
1043 /**
1044  * Handle interrupts from the NIC.
1045  *
1046  * @param[in] intr_handle
1047  *   Interrupt handler.
1048  * @param cb_arg
1049  *   Callback argument.
1050  */
1051 void
1052 mlx5_dev_interrupt_handler(void *cb_arg)
1053 {
1054         struct rte_eth_dev *dev = cb_arg;
1055         struct priv *priv = dev->data->dev_private;
1056         uint32_t events;
1057
1058         priv_lock(priv);
1059         events = priv_dev_status_handler(priv);
1060         priv_unlock(priv);
1061         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1062                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1063         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1064                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1065 }
1066
1067 /**
1068  * Handle interrupts from the socket.
1069  *
1070  * @param cb_arg
1071  *   Callback argument.
1072  */
1073 static void
1074 mlx5_dev_handler_socket(void *cb_arg)
1075 {
1076         struct rte_eth_dev *dev = cb_arg;
1077         struct priv *priv = dev->data->dev_private;
1078
1079         priv_lock(priv);
1080         priv_socket_handle(priv);
1081         priv_unlock(priv);
1082 }
1083
1084 /**
1085  * Uninstall interrupt handler.
1086  *
1087  * @param priv
1088  *   Pointer to private structure.
1089  * @param dev
1090  *   Pointer to the rte_eth_dev structure.
1091  */
1092 void
1093 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1094 {
1095         if (dev->data->dev_conf.intr_conf.lsc ||
1096             dev->data->dev_conf.intr_conf.rmv)
1097                 rte_intr_callback_unregister(&priv->intr_handle,
1098                                              mlx5_dev_interrupt_handler, dev);
1099         if (priv->primary_socket)
1100                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1101                                              mlx5_dev_handler_socket, dev);
1102         if (priv->pending_alarm) {
1103                 priv->pending_alarm = 0;
1104                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1105         }
1106         priv->intr_handle.fd = 0;
1107         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1108         priv->intr_handle_socket.fd = 0;
1109         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1110 }
1111
1112 /**
1113  * Install interrupt handler.
1114  *
1115  * @param priv
1116  *   Pointer to private structure.
1117  * @param dev
1118  *   Pointer to the rte_eth_dev structure.
1119  */
1120 void
1121 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1122 {
1123         int rc, flags;
1124
1125         assert(priv->ctx->async_fd > 0);
1126         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1127         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1128         if (rc < 0) {
1129                 INFO("failed to change file descriptor async event queue");
1130                 dev->data->dev_conf.intr_conf.lsc = 0;
1131                 dev->data->dev_conf.intr_conf.rmv = 0;
1132         }
1133         if (dev->data->dev_conf.intr_conf.lsc ||
1134             dev->data->dev_conf.intr_conf.rmv) {
1135                 priv->intr_handle.fd = priv->ctx->async_fd;
1136                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1137                 rte_intr_callback_register(&priv->intr_handle,
1138                                            mlx5_dev_interrupt_handler, dev);
1139         }
1140
1141         rc = priv_socket_init(priv);
1142         if (!rc && priv->primary_socket) {
1143                 priv->intr_handle_socket.fd = priv->primary_socket;
1144                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1145                 rte_intr_callback_register(&priv->intr_handle_socket,
1146                                            mlx5_dev_handler_socket, dev);
1147         }
1148 }
1149
1150 /**
1151  * Change the link state (UP / DOWN).
1152  *
1153  * @param priv
1154  *   Pointer to private data structure.
1155  * @param up
1156  *   Nonzero for link up, otherwise link down.
1157  *
1158  * @return
1159  *   0 on success, errno value on failure.
1160  */
1161 static int
1162 priv_dev_set_link(struct priv *priv, int up)
1163 {
1164         return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP);
1165 }
1166
1167 /**
1168  * DPDK callback to bring the link DOWN.
1169  *
1170  * @param dev
1171  *   Pointer to Ethernet device structure.
1172  *
1173  * @return
1174  *   0 on success, errno value on failure.
1175  */
1176 int
1177 mlx5_set_link_down(struct rte_eth_dev *dev)
1178 {
1179         struct priv *priv = dev->data->dev_private;
1180         int err;
1181
1182         priv_lock(priv);
1183         err = priv_dev_set_link(priv, 0);
1184         priv_unlock(priv);
1185         return err;
1186 }
1187
1188 /**
1189  * DPDK callback to bring the link UP.
1190  *
1191  * @param dev
1192  *   Pointer to Ethernet device structure.
1193  *
1194  * @return
1195  *   0 on success, errno value on failure.
1196  */
1197 int
1198 mlx5_set_link_up(struct rte_eth_dev *dev)
1199 {
1200         struct priv *priv = dev->data->dev_private;
1201         int err;
1202
1203         priv_lock(priv);
1204         err = priv_dev_set_link(priv, 1);
1205         priv_unlock(priv);
1206         return err;
1207 }
1208
1209 /**
1210  * Configure the TX function to use.
1211  *
1212  * @param priv
1213  *   Pointer to private data structure.
1214  * @param dev
1215  *   Pointer to rte_eth_dev structure.
1216  *
1217  * @return
1218  *   Pointer to selected Tx burst function.
1219  */
1220 eth_tx_burst_t
1221 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1222 {
1223         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1224         struct mlx5_dev_config *config = &priv->config;
1225         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1226         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1227                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1228                                     DEV_TX_OFFLOAD_GRE_TNL_TSO));
1229         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1230
1231         assert(priv != NULL);
1232         /* Select appropriate TX function. */
1233         if (vlan_insert || tso)
1234                 return tx_pkt_burst;
1235         if (config->mps == MLX5_MPW_ENHANCED) {
1236                 if (priv_check_vec_tx_support(priv, dev) > 0) {
1237                         if (priv_check_raw_vec_tx_support(priv, dev) > 0)
1238                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1239                         else
1240                                 tx_pkt_burst = mlx5_tx_burst_vec;
1241                         DEBUG("selected Enhanced MPW TX vectorized function");
1242                 } else {
1243                         tx_pkt_burst = mlx5_tx_burst_empw;
1244                         DEBUG("selected Enhanced MPW TX function");
1245                 }
1246         } else if (config->mps && (config->txq_inline > 0)) {
1247                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1248                 DEBUG("selected MPW inline TX function");
1249         } else if (config->mps) {
1250                 tx_pkt_burst = mlx5_tx_burst_mpw;
1251                 DEBUG("selected MPW TX function");
1252         }
1253         return tx_pkt_burst;
1254 }
1255
1256 /**
1257  * Configure the RX function to use.
1258  *
1259  * @param priv
1260  *   Pointer to private data structure.
1261  * @param dev
1262  *   Pointer to rte_eth_dev structure.
1263  *
1264  * @return
1265  *   Pointer to selected Rx burst function.
1266  */
1267 eth_rx_burst_t
1268 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev)
1269 {
1270         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1271
1272         assert(priv != NULL);
1273         if (priv_check_vec_rx_support(priv) > 0) {
1274                 rx_pkt_burst = mlx5_rx_burst_vec;
1275                 DEBUG("selected RX vectorized function");
1276         }
1277         return rx_pkt_burst;
1278 }
1279
1280 /**
1281  * Check if mlx5 device was removed.
1282  *
1283  * @param dev
1284  *   Pointer to Ethernet device structure.
1285  *
1286  * @return
1287  *   1 when device is removed, otherwise 0.
1288  */
1289 int
1290 mlx5_is_removed(struct rte_eth_dev *dev)
1291 {
1292         struct ibv_device_attr device_attr;
1293         struct priv *priv = dev->data->dev_private;
1294
1295         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1296                 return 1;
1297         return 0;
1298 }