drivers/net/mlx5/mlx5_ethdev.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2015 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <stddef.h>
   7 #include <assert.h>
   8 #include <inttypes.h>
   9 #include <unistd.h>
  10 #include <stdint.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <stdlib.h>
  14 #include <errno.h>
  15 #include <dirent.h>
  16 #include <net/if.h>
  17 #include <sys/ioctl.h>
  18 #include <sys/socket.h>
  19 #include <netinet/in.h>
  20 #include <linux/ethtool.h>
  21 #include <linux/sockios.h>
  22 #include <fcntl.h>
  23 #include <stdalign.h>
  24 #include <sys/un.h>
  25 #include <time.h>
  26
  27 #include <rte_atomic.h>
  28 #include <rte_ethdev_driver.h>
  29 #include <rte_bus_pci.h>
  30 #include <rte_mbuf.h>
  31 #include <rte_common.h>
  32 #include <rte_interrupts.h>
  33 #include <rte_malloc.h>
  34 #include <rte_string_fns.h>
  35 #include <rte_rwlock.h>
  36 #include <rte_cycles.h>
  37
  38 #include "mlx5.h"
  39 #include "mlx5_glue.h"
  40 #include "mlx5_rxtx.h"
  41 #include "mlx5_utils.h"
  42
  43 /* Supported speed values found in /usr/include/linux/ethtool.h */
  44 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
  45 #define SUPPORTED_40000baseKR4_Full (1 << 23)
  46 #endif
  47 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
  48 #define SUPPORTED_40000baseCR4_Full (1 << 24)
  49 #endif
  50 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
  51 #define SUPPORTED_40000baseSR4_Full (1 << 25)
  52 #endif
  53 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
  54 #define SUPPORTED_40000baseLR4_Full (1 << 26)
  55 #endif
  56 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
  57 #define SUPPORTED_56000baseKR4_Full (1 << 27)
  58 #endif
  59 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
  60 #define SUPPORTED_56000baseCR4_Full (1 << 28)
  61 #endif
  62 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
  63 #define SUPPORTED_56000baseSR4_Full (1 << 29)
  64 #endif
  65 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
  66 #define SUPPORTED_56000baseLR4_Full (1 << 30)
  67 #endif
  68
  69 /* Add defines in case the running kernel is not the same as user headers. */
  70 #ifndef ETHTOOL_GLINKSETTINGS
  71 struct ethtool_link_settings {
  72         uint32_t cmd;
  73         uint32_t speed;
  74         uint8_t duplex;
  75         uint8_t port;
  76         uint8_t phy_address;
  77         uint8_t autoneg;
  78         uint8_t mdio_support;
  79         uint8_t eth_to_mdix;
  80         uint8_t eth_tp_mdix_ctrl;
  81         int8_t link_mode_masks_nwords;
  82         uint32_t reserved[8];
  83         uint32_t link_mode_masks[];
  84 };
  85
  86 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  87 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  88 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  89 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  90 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  91 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  92 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  93 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  94 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  95 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  96 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  97 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  98 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  99 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
 100 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 101 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 102 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 103 #endif
 104 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 105 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 106 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 107 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 108 #endif
 109 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 110 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 111 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 112 #endif
 113 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 114 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 115 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 116 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 117 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 118 #endif
 119
 120 /**
 121  * Get master interface name from private structure.
 122  *
 123  * @param[in] dev
 124  *   Pointer to Ethernet device.
 125  * @param[out] ifname
 126  *   Interface name output buffer.
 127  *
 128  * @return
 129  *   0 on success, a negative errno value otherwise and rte_errno is set.
 130  */
 131 int
 132 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
 133 {
 134         DIR *dir;
 135         struct dirent *dent;
 136         unsigned int dev_type = 0;
 137         unsigned int dev_port_prev = ~0u;
 138         char match[IF_NAMESIZE] = "";
 139
 140         assert(ibdev_path);
 141         {
 142                 MKSTR(path, "%s/device/net", ibdev_path);
 143
 144                 dir = opendir(path);
 145                 if (dir == NULL) {
 146                         rte_errno = errno;
 147                         return -rte_errno;
 148                 }
 149         }
 150         while ((dent = readdir(dir)) != NULL) {
 151                 char *name = dent->d_name;
 152                 FILE *file;
 153                 unsigned int dev_port;
 154                 int r;
 155
 156                 if ((name[0] == '.') &&
 157                     ((name[1] == '\0') ||
 158                      ((name[1] == '.') && (name[2] == '\0'))))
 159                         continue;
 160
 161                 MKSTR(path, "%s/device/net/%s/%s",
 162                       ibdev_path, name,
 163                       (dev_type ? "dev_id" : "dev_port"));
 164
 165                 file = fopen(path, "rb");
 166                 if (file == NULL) {
 167                         if (errno != ENOENT)
 168                                 continue;
 169                         /*
 170                          * Switch to dev_id when dev_port does not exist as
 171                          * is the case with Linux kernel versions < 3.15.
 172                          */
 173 try_dev_id:
 174                         match[0] = '\0';
 175                         if (dev_type)
 176                                 break;
 177                         dev_type = 1;
 178                         dev_port_prev = ~0u;
 179                         rewinddir(dir);
 180                         continue;
 181                 }
 182                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 183                 fclose(file);
 184                 if (r != 1)
 185                         continue;
 186                 /*
 187                  * Switch to dev_id when dev_port returns the same value for
 188                  * all ports. May happen when using a MOFED release older than
 189                  * 3.0 with a Linux kernel >= 3.15.
 190                  */
 191                 if (dev_port == dev_port_prev)
 192                         goto try_dev_id;
 193                 dev_port_prev = dev_port;
 194                 if (dev_port == 0)
 195                         strlcpy(match, name, sizeof(match));
 196         }
 197         closedir(dir);
 198         if (match[0] == '\0') {
 199                 rte_errno = ENOENT;
 200                 return -rte_errno;
 201         }
 202         strncpy(*ifname, match, sizeof(*ifname));
 203         return 0;
 204 }
 205
 206 /**
 207  * Get interface name from private structure.
 208  *
 209  * This is a port representor-aware version of mlx5_get_master_ifname().
 210  *
 211  * @param[in] dev
 212  *   Pointer to Ethernet device.
 213  * @param[out] ifname
 214  *   Interface name output buffer.
 215  *
 216  * @return
 217  *   0 on success, a negative errno value otherwise and rte_errno is set.
 218  */
 219 int
 220 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 221 {
 222         struct mlx5_priv *priv = dev->data->dev_private;
 223         unsigned int ifindex;
 224
 225         assert(priv);
 226         assert(priv->sh);
 227         ifindex = priv->nl_socket_rdma >= 0 ?
 228                   mlx5_nl_ifindex(priv->nl_socket_rdma,
 229                                   priv->sh->ibdev_name,
 230                                   priv->ibv_port) : 0;
 231         if (!ifindex) {
 232                 if (!priv->representor)
 233                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
 234                                                       ifname);
 235                 rte_errno = ENXIO;
 236                 return -rte_errno;
 237         }
 238         if (if_indextoname(ifindex, &(*ifname)[0]))
 239                 return 0;
 240         rte_errno = errno;
 241         return -rte_errno;
 242 }
 243
 244 /**
 245  * Get interface name for the specified device, uses the extra base
 246  * device resources to perform Netlink requests.
 247  *
 248  * This is a port representor-aware version of mlx5_get_master_ifname().
 249  *
 250  * @param[in] base
 251  *   Pointer to Ethernet device to use Netlink socket from
 252  *   to perfrom requests.
 253  * @param[in] dev
 254  *   Pointer to Ethernet device.
 255  * @param[out] ifname
 256  *   Interface name output buffer.
 257  *
 258  * @return
 259  *   0 on success, a negative errno value otherwise and rte_errno is set.
 260  */
 261 int
 262 mlx5_get_ifname_base(const struct rte_eth_dev *base,
 263                      const struct rte_eth_dev *dev,
 264                      char (*ifname)[IF_NAMESIZE])
 265 {
 266         struct mlx5_priv *priv = dev->data->dev_private;
 267         struct mlx5_priv *priv_base = base->data->dev_private;
 268         unsigned int ifindex;
 269
 270         assert(priv);
 271         assert(priv->sh);
 272         assert(priv_base);
 273         ifindex = priv_base->nl_socket_rdma >= 0 ?
 274                   mlx5_nl_ifindex(priv_base->nl_socket_rdma,
 275                                   priv->sh->ibdev_name,
 276                                   priv->ibv_port) : 0;
 277         if (!ifindex) {
 278                 if (!priv->representor)
 279                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
 280                                                       ifname);
 281                 rte_errno = ENXIO;
 282                 return -rte_errno;
 283         }
 284         if (if_indextoname(ifindex, &(*ifname)[0]))
 285                 return 0;
 286         rte_errno = errno;
 287         return -rte_errno;
 288 }
 289 /**
 290  * Get the interface index from device name.
 291  *
 292  * @param[in] dev
 293  *   Pointer to Ethernet device.
 294  *
 295  * @return
 296  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
 297  */
 298 unsigned int
 299 mlx5_ifindex(const struct rte_eth_dev *dev)
 300 {
 301         char ifname[IF_NAMESIZE];
 302         unsigned int ifindex;
 303
 304         if (mlx5_get_ifname(dev, &ifname))
 305                 return 0;
 306         ifindex = if_nametoindex(ifname);
 307         if (!ifindex)
 308                 rte_errno = errno;
 309         return ifindex;
 310 }
 311
 312 /**
 313  * Perform ifreq ioctl() on associated Ethernet device.
 314  *
 315  * @param[in] dev
 316  *   Pointer to Ethernet device.
 317  * @param req
 318  *   Request number to pass to ioctl().
 319  * @param[out] ifr
 320  *   Interface request structure output buffer.
 321  *
 322  * @return
 323  *   0 on success, a negative errno value otherwise and rte_errno is set.
 324  */
 325 int
 326 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 327 {
 328         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 329         int ret = 0;
 330
 331         if (sock == -1) {
 332                 rte_errno = errno;
 333                 return -rte_errno;
 334         }
 335         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 336         if (ret)
 337                 goto error;
 338         ret = ioctl(sock, req, ifr);
 339         if (ret == -1) {
 340                 rte_errno = errno;
 341                 goto error;
 342         }
 343         close(sock);
 344         return 0;
 345 error:
 346         close(sock);
 347         return -rte_errno;
 348 }
 349
 350 /**
 351  * Perform ifreq ioctl() on specified Ethernet device,
 352  * ifindex, name and other attributes are requested
 353  * on the base device to avoid specified device Netlink
 354  * socket sharing (this is not thread-safe).
 355  *
 356  * @param[in] base
 357  *   Pointer to Ethernet device to get dev attributes.
 358  * @param[in] dev
 359  *   Pointer to Ethernet device to perform ioctl.
 360  * @param req
 361  *   Request number to pass to ioctl().
 362  * @param[out] ifr
 363  *   Interface request structure output buffer.
 364  *
 365  * @return
 366  *   0 on success, a negative errno value otherwise and rte_errno is set.
 367  */
 368 int
 369 mlx5_ifreq_base(const struct rte_eth_dev *base,
 370                 const struct rte_eth_dev *dev,
 371                 int req, struct ifreq *ifr)
 372 {
 373         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 374         int ret = 0;
 375
 376         if (sock == -1) {
 377                 rte_errno = errno;
 378                 return -rte_errno;
 379         }
 380         ret = mlx5_get_ifname_base(base, dev, &ifr->ifr_name);
 381         if (ret)
 382                 goto error;
 383         ret = ioctl(sock, req, ifr);
 384         if (ret == -1) {
 385                 rte_errno = errno;
 386                 goto error;
 387         }
 388         close(sock);
 389         return 0;
 390 error:
 391         close(sock);
 392         return -rte_errno;
 393 }
 394
 395 /**
 396  * Get device MTU.
 397  *
 398  * @param dev
 399  *   Pointer to Ethernet device.
 400  * @param[out] mtu
 401  *   MTU value output buffer.
 402  *
 403  * @return
 404  *   0 on success, a negative errno value otherwise and rte_errno is set.
 405  */
 406 int
 407 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 408 {
 409         struct ifreq request;
 410         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 411
 412         if (ret)
 413                 return ret;
 414         *mtu = request.ifr_mtu;
 415         return 0;
 416 }
 417
 418 /**
 419  * Set device MTU.
 420  *
 421  * @param dev
 422  *   Pointer to Ethernet device.
 423  * @param mtu
 424  *   MTU value to set.
 425  *
 426  * @return
 427  *   0 on success, a negative errno value otherwise and rte_errno is set.
 428  */
 429 static int
 430 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 431 {
 432         struct ifreq request = { .ifr_mtu = mtu, };
 433
 434         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 435 }
 436
 437 /**
 438  * Set device flags.
 439  *
 440  * @param dev
 441  *   Pointer to Ethernet device.
 442  * @param keep
 443  *   Bitmask for flags that must remain untouched.
 444  * @param flags
 445  *   Bitmask for flags to modify.
 446  *
 447  * @return
 448  *   0 on success, a negative errno value otherwise and rte_errno is set.
 449  */
 450 int
 451 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 452 {
 453         struct ifreq request;
 454         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 455
 456         if (ret)
 457                 return ret;
 458         request.ifr_flags &= keep;
 459         request.ifr_flags |= flags & ~keep;
 460         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 461 }
 462
 463 /**
 464  * DPDK callback for Ethernet device configuration.
 465  *
 466  * @param dev
 467  *   Pointer to Ethernet device structure.
 468  *
 469  * @return
 470  *   0 on success, a negative errno value otherwise and rte_errno is set.
 471  */
 472 int
 473 mlx5_dev_configure(struct rte_eth_dev *dev)
 474 {
 475         struct mlx5_priv *priv = dev->data->dev_private;
 476         unsigned int rxqs_n = dev->data->nb_rx_queues;
 477         unsigned int txqs_n = dev->data->nb_tx_queues;
 478         unsigned int i;
 479         unsigned int j;
 480         unsigned int reta_idx_n;
 481         const uint8_t use_app_rss_key =
 482                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 483         int ret = 0;
 484
 485         if (use_app_rss_key &&
 486             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 487              MLX5_RSS_HASH_KEY_LEN)) {
 488                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
 489                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
 490                 rte_errno = EINVAL;
 491                 return -rte_errno;
 492         }
 493         priv->rss_conf.rss_key =
 494                 rte_realloc(priv->rss_conf.rss_key,
 495                             MLX5_RSS_HASH_KEY_LEN, 0);
 496         if (!priv->rss_conf.rss_key) {
 497                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 498                         dev->data->port_id, rxqs_n);
 499                 rte_errno = ENOMEM;
 500                 return -rte_errno;
 501         }
 502         memcpy(priv->rss_conf.rss_key,
 503                use_app_rss_key ?
 504                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 505                rss_hash_default_key,
 506                MLX5_RSS_HASH_KEY_LEN);
 507         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 508         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 509         priv->rxqs = (void *)dev->data->rx_queues;
 510         priv->txqs = (void *)dev->data->tx_queues;
 511         if (txqs_n != priv->txqs_n) {
 512                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 513                         dev->data->port_id, priv->txqs_n, txqs_n);
 514                 priv->txqs_n = txqs_n;
 515         }
 516         if (rxqs_n > priv->config.ind_table_max_size) {
 517                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 518                         dev->data->port_id, rxqs_n);
 519                 rte_errno = EINVAL;
 520                 return -rte_errno;
 521         }
 522         if (rxqs_n != priv->rxqs_n) {
 523                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 524                         dev->data->port_id, priv->rxqs_n, rxqs_n);
 525                 priv->rxqs_n = rxqs_n;
 526                 /*
 527                  * If the requested number of RX queues is not a power of two,
 528                  * use the maximum indirection table size for better balancing.
 529                  * The result is always rounded to the next power of two.
 530                  */
 531                 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 532                                              priv->config.ind_table_max_size :
 533                                              rxqs_n));
 534                 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 535                 if (ret)
 536                         return ret;
 537                 /*
 538                  * When the number of RX queues is not a power of two,
 539                  * the remaining table entries are padded with reused WQs
 540                  * and hashes are not spread uniformly.
 541                  */
 542                 for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 543                         (*priv->reta_idx)[i] = j;
 544                         if (++j == rxqs_n)
 545                                 j = 0;
 546                 }
 547         }
 548         ret = mlx5_proc_priv_init(dev);
 549         if (ret)
 550                 return ret;
 551         return 0;
 552 }
 553
 554 /**
 555  * Sets default tuning parameters.
 556  *
 557  * @param dev
 558  *   Pointer to Ethernet device.
 559  * @param[out] info
 560  *   Info structure output buffer.
 561  */
 562 static void
 563 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 564 {
 565         struct mlx5_priv *priv = dev->data->dev_private;
 566
 567         /* Minimum CPU utilization. */
 568         info->default_rxportconf.ring_size = 256;
 569         info->default_txportconf.ring_size = 256;
 570         info->default_rxportconf.burst_size = 64;
 571         info->default_txportconf.burst_size = 64;
 572         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 573                 info->default_rxportconf.nb_queues = 16;
 574                 info->default_txportconf.nb_queues = 16;
 575                 if (dev->data->nb_rx_queues > 2 ||
 576                     dev->data->nb_tx_queues > 2) {
 577                         /* Max Throughput. */
 578                         info->default_rxportconf.ring_size = 2048;
 579                         info->default_txportconf.ring_size = 2048;
 580                 }
 581         } else {
 582                 info->default_rxportconf.nb_queues = 8;
 583                 info->default_txportconf.nb_queues = 8;
 584                 if (dev->data->nb_rx_queues > 2 ||
 585                     dev->data->nb_tx_queues > 2) {
 586                         /* Max Throughput. */
 587                         info->default_rxportconf.ring_size = 4096;
 588                         info->default_txportconf.ring_size = 4096;
 589                 }
 590         }
 591 }
 592
 593 /**
 594  * DPDK callback to get information about the device.
 595  *
 596  * @param dev
 597  *   Pointer to Ethernet device structure.
 598  * @param[out] info
 599  *   Info structure output buffer.
 600  */
 601 void
 602 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 603 {
 604         struct mlx5_priv *priv = dev->data->dev_private;
 605         struct mlx5_dev_config *config = &priv->config;
 606         unsigned int max;
 607         char ifname[IF_NAMESIZE];
 608
 609         /* FIXME: we should ask the device for these values. */
 610         info->min_rx_bufsize = 32;
 611         info->max_rx_pktlen = 65536;
 612         /*
 613          * Since we need one CQ per QP, the limit is the minimum number
 614          * between the two values.
 615          */
 616         max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
 617                       priv->sh->device_attr.orig_attr.max_qp);
 618         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 619         if (max >= 65535)
 620                 max = 65535;
 621         info->max_rx_queues = max;
 622         info->max_tx_queues = max;
 623         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 624         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 625         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 626                                  info->rx_queue_offload_capa);
 627         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 628         if (mlx5_get_ifname(dev, &ifname) == 0)
 629                 info->if_index = if_nametoindex(ifname);
 630         info->reta_size = priv->reta_idx_n ?
 631                 priv->reta_idx_n : config->ind_table_max_size;
 632         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
 633         info->speed_capa = priv->link_speed_capa;
 634         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 635         mlx5_set_default_params(dev, info);
 636         info->switch_info.name = dev->data->name;
 637         info->switch_info.domain_id = priv->domain_id;
 638         info->switch_info.port_id = priv->representor_id;
 639         if (priv->representor) {
 640                 unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0);
 641                 uint16_t port_id[i];
 642
 643                 i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i);
 644                 while (i--) {
 645                         struct mlx5_priv *opriv =
 646                                 rte_eth_devices[port_id[i]].data->dev_private;
 647
 648                         if (!opriv ||
 649                             opriv->representor ||
 650                             opriv->domain_id != priv->domain_id)
 651                                 continue;
 652                         /*
 653                          * Override switch name with that of the master
 654                          * device.
 655                          */
 656                         info->switch_info.name = opriv->dev_data->name;
 657                         break;
 658                 }
 659         }
 660 }
 661
 662 /**
 663  * Get device current raw clock counter
 664  *
 665  * @param dev
 666  *   Pointer to Ethernet device structure.
 667  * @param[out] time
 668  *   Current raw clock counter of the device.
 669  *
 670  * @return
 671  *   0 if the clock has correctly been read
 672  *   The value of errno in case of error
 673  */
 674 int
 675 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
 676 {
 677         struct mlx5_priv *priv = dev->data->dev_private;
 678         struct ibv_context *ctx = priv->sh->ctx;
 679         struct ibv_values_ex values;
 680         int err = 0;
 681
 682         values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
 683         err = mlx5_glue->query_rt_values_ex(ctx, &values);
 684         if (err != 0) {
 685                 DRV_LOG(WARNING, "Could not query the clock !");
 686                 return err;
 687         }
 688         *clock = values.raw_clock.tv_nsec;
 689         return 0;
 690 }
 691
 692 /**
 693  * Get firmware version of a device.
 694  *
 695  * @param dev
 696  *   Ethernet device port.
 697  * @param fw_ver
 698  *   String output allocated by caller.
 699  * @param fw_size
 700  *   Size of the output string, including terminating null byte.
 701  *
 702  * @return
 703  *   0 on success, or the size of the non truncated string if too big.
 704  */
 705 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 706 {
 707         struct mlx5_priv *priv = dev->data->dev_private;
 708         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
 709         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 710
 711         if (fw_size < size)
 712                 return size;
 713         if (fw_ver != NULL)
 714                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 715         return 0;
 716 }
 717
 718 /**
 719  * Get supported packet types.
 720  *
 721  * @param dev
 722  *   Pointer to Ethernet device structure.
 723  *
 724  * @return
 725  *   A pointer to the supported Packet types array.
 726  */
 727 const uint32_t *
 728 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 729 {
 730         static const uint32_t ptypes[] = {
 731                 /* refers to rxq_cq_to_pkt_type() */
 732                 RTE_PTYPE_L2_ETHER,
 733                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 734                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 735                 RTE_PTYPE_L4_NONFRAG,
 736                 RTE_PTYPE_L4_FRAG,
 737                 RTE_PTYPE_L4_TCP,
 738                 RTE_PTYPE_L4_UDP,
 739                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 740                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 741                 RTE_PTYPE_INNER_L4_NONFRAG,
 742                 RTE_PTYPE_INNER_L4_FRAG,
 743                 RTE_PTYPE_INNER_L4_TCP,
 744                 RTE_PTYPE_INNER_L4_UDP,
 745                 RTE_PTYPE_UNKNOWN
 746         };
 747
 748         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 749             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 750             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 751                 return ptypes;
 752         return NULL;
 753 }
 754
 755 /**
 756  * Retrieve the master device for representor in the same switch domain.
 757  *
 758  * @param dev
 759  *   Pointer to representor Ethernet device structure.
 760  *
 761  * @return
 762  *   Master device structure  on success, NULL otherwise.
 763  */
 764
 765 static struct rte_eth_dev *
 766 mlx5_find_master_dev(struct rte_eth_dev *dev)
 767 {
 768         struct mlx5_priv *priv;
 769         uint16_t port_id;
 770         uint16_t domain_id;
 771
 772         priv = dev->data->dev_private;
 773         domain_id = priv->domain_id;
 774         assert(priv->representor);
 775         RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) {
 776                 priv = rte_eth_devices[port_id].data->dev_private;
 777                 if (priv &&
 778                     priv->master &&
 779                     priv->domain_id == domain_id)
 780                         return &rte_eth_devices[port_id];
 781         }
 782         return NULL;
 783 }
 784
 785 /**
 786  * DPDK callback to retrieve physical link information.
 787  *
 788  * @param dev
 789  *   Pointer to Ethernet device structure.
 790  * @param[out] link
 791  *   Storage for current link status.
 792  *
 793  * @return
 794  *   0 on success, a negative errno value otherwise and rte_errno is set.
 795  */
 796 static int
 797 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 798                                struct rte_eth_link *link)
 799 {
 800         struct mlx5_priv *priv = dev->data->dev_private;
 801         struct ethtool_cmd edata = {
 802                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 803         };
 804         struct ifreq ifr;
 805         struct rte_eth_link dev_link;
 806         int link_speed = 0;
 807         int ret;
 808
 809         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 810         if (ret) {
 811                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 812                         dev->data->port_id, strerror(rte_errno));
 813                 return ret;
 814         }
 815         dev_link = (struct rte_eth_link) {
 816                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 817                                 (ifr.ifr_flags & IFF_RUNNING)),
 818         };
 819         ifr = (struct ifreq) {
 820                 .ifr_data = (void *)&edata,
 821         };
 822         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 823         if (ret) {
 824                 if (ret == -ENOTSUP && priv->representor) {
 825                         struct rte_eth_dev *master;
 826
 827                         /*
 828                          * For representors we can try to inherit link
 829                          * settings from the master device. Actually
 830                          * link settings do not make a lot of sense
 831                          * for representors due to missing physical
 832                          * link. The old kernel drivers supported
 833                          * emulated settings query for representors,
 834                          * the new ones do not, so we have to add
 835                          * this code for compatibility issues.
 836                          */
 837                         master = mlx5_find_master_dev(dev);
 838                         if (master) {
 839                                 ifr = (struct ifreq) {
 840                                         .ifr_data = (void *)&edata,
 841                                 };
 842                                 /*
 843                                  * Use special version of mlx5_ifreq()
 844                                  * to get master device name with local
 845                                  * device Netlink socket. Using master
 846                                  * device Netlink socket is not thread
 847                                  * safe.
 848                                  */
 849                                 ret = mlx5_ifreq_base(dev, master,
 850                                                       SIOCETHTOOL, &ifr);
 851                         }
 852                 }
 853                 if (ret) {
 854                         DRV_LOG(WARNING,
 855                                 "port %u ioctl(SIOCETHTOOL,"
 856                                 " ETHTOOL_GSET) failed: %s",
 857                                 dev->data->port_id, strerror(rte_errno));
 858                         return ret;
 859                 }
 860         }
 861         link_speed = ethtool_cmd_speed(&edata);
 862         if (link_speed == -1)
 863                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 864         else
 865                 dev_link.link_speed = link_speed;
 866         priv->link_speed_capa = 0;
 867         if (edata.supported & SUPPORTED_Autoneg)
 868                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 869         if (edata.supported & (SUPPORTED_1000baseT_Full |
 870                                SUPPORTED_1000baseKX_Full))
 871                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 872         if (edata.supported & SUPPORTED_10000baseKR_Full)
 873                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 874         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 875                                SUPPORTED_40000baseCR4_Full |
 876                                SUPPORTED_40000baseSR4_Full |
 877                                SUPPORTED_40000baseLR4_Full))
 878                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 879         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 880                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 881         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 882                         ETH_LINK_SPEED_FIXED);
 883         if (((dev_link.link_speed && !dev_link.link_status) ||
 884              (!dev_link.link_speed && dev_link.link_status))) {
 885                 rte_errno = EAGAIN;
 886                 return -rte_errno;
 887         }
 888         *link = dev_link;
 889         return 0;
 890 }
 891
 892 /**
 893  * Retrieve physical link information (unlocked version using new ioctl).
 894  *
 895  * @param dev
 896  *   Pointer to Ethernet device structure.
 897  * @param[out] link
 898  *   Storage for current link status.
 899  *
 900  * @return
 901  *   0 on success, a negative errno value otherwise and rte_errno is set.
 902  */
 903 static int
 904 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 905                              struct rte_eth_link *link)
 906
 907 {
 908         struct mlx5_priv *priv = dev->data->dev_private;
 909         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 910         struct ifreq ifr;
 911         struct rte_eth_link dev_link;
 912         struct rte_eth_dev *master = NULL;
 913         uint64_t sc;
 914         int ret;
 915
 916         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 917         if (ret) {
 918                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 919                         dev->data->port_id, strerror(rte_errno));
 920                 return ret;
 921         }
 922         dev_link = (struct rte_eth_link) {
 923                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 924                                 (ifr.ifr_flags & IFF_RUNNING)),
 925         };
 926         ifr = (struct ifreq) {
 927                 .ifr_data = (void *)&gcmd,
 928         };
 929         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 930         if (ret) {
 931                 if (ret == -ENOTSUP && priv->representor) {
 932                         /*
 933                          * For representors we can try to inherit link
 934                          * settings from the master device. Actually
 935                          * link settings do not make a lot of sense
 936                          * for representors due to missing physical
 937                          * link. The old kernel drivers supported
 938                          * emulated settings query for representors,
 939                          * the new ones do not, so we have to add
 940                          * this code for compatibility issues.
 941                          */
 942                         master = mlx5_find_master_dev(dev);
 943                         if (master) {
 944                                 ifr = (struct ifreq) {
 945                                         .ifr_data = (void *)&gcmd,
 946                                 };
 947                                 /*
 948                                  * Avoid using master Netlink socket.
 949                                  * This is not thread-safe.
 950                                  */
 951                                 ret = mlx5_ifreq_base(dev, master,
 952                                                       SIOCETHTOOL, &ifr);
 953                         }
 954                 }
 955                 if (ret) {
 956                         DRV_LOG(DEBUG,
 957                                 "port %u ioctl(SIOCETHTOOL,"
 958                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
 959                                 dev->data->port_id, strerror(rte_errno));
 960                         return ret;
 961                 }
 962
 963         }
 964         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 965
 966         alignas(struct ethtool_link_settings)
 967         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 968                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 969         struct ethtool_link_settings *ecmd = (void *)data;
 970
 971         *ecmd = gcmd;
 972         ifr.ifr_data = (void *)ecmd;
 973         ret = mlx5_ifreq_base(dev, master ? master : dev, SIOCETHTOOL, &ifr);
 974         if (ret) {
 975                 DRV_LOG(DEBUG,
 976                         "port %u ioctl(SIOCETHTOOL,"
 977                         "ETHTOOL_GLINKSETTINGS) failed: %s",
 978                         dev->data->port_id, strerror(rte_errno));
 979                 return ret;
 980         }
 981         dev_link.link_speed = ecmd->speed;
 982         sc = ecmd->link_mode_masks[0] |
 983                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 984         priv->link_speed_capa = 0;
 985         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 986                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 987         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 988                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 989                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 990         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 991                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 992                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 993                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 994         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 995                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 996                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 997         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 998                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 999                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
1000                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
1001                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
1002         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
1003                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
1004                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
1005                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
1006                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
1007         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
1008                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
1009                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
1010                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
1011         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
1012                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
1013                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
1014         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
1015                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
1016                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
1017                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
1018                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
1019         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
1020                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
1021         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
1022                                   ETH_LINK_SPEED_FIXED);
1023         if (((dev_link.link_speed && !dev_link.link_status) ||
1024              (!dev_link.link_speed && dev_link.link_status))) {
1025                 rte_errno = EAGAIN;
1026                 return -rte_errno;
1027         }
1028         *link = dev_link;
1029         return 0;
1030 }
1031
1032 /**
1033  * DPDK callback to retrieve physical link information.
1034  *
1035  * @param dev
1036  *   Pointer to Ethernet device structure.
1037  * @param wait_to_complete
1038  *   Wait for request completion.
1039  *
1040  * @return
1041  *   0 if link status was not updated, positive if it was, a negative errno
1042  *   value otherwise and rte_errno is set.
1043  */
1044 int
1045 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1046 {
1047         int ret;
1048         struct rte_eth_link dev_link;
1049         time_t start_time = time(NULL);
1050
1051         do {
1052                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
1053                 if (ret)
1054                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
1055                 if (ret == 0)
1056                         break;
1057                 /* Handle wait to complete situation. */
1058                 if (wait_to_complete && ret == -EAGAIN) {
1059                         if (abs((int)difftime(time(NULL), start_time)) <
1060                             MLX5_LINK_STATUS_TIMEOUT) {
1061                                 usleep(0);
1062                                 continue;
1063                         } else {
1064                                 rte_errno = EBUSY;
1065                                 return -rte_errno;
1066                         }
1067                 } else if (ret < 0) {
1068                         return ret;
1069                 }
1070         } while (wait_to_complete);
1071         ret = !!memcmp(&dev->data->dev_link, &dev_link,
1072                        sizeof(struct rte_eth_link));
1073         dev->data->dev_link = dev_link;
1074         return ret;
1075 }
1076
1077 /**
1078  * DPDK callback to change the MTU.
1079  *
1080  * @param dev
1081  *   Pointer to Ethernet device structure.
1082  * @param in_mtu
1083  *   New MTU.
1084  *
1085  * @return
1086  *   0 on success, a negative errno value otherwise and rte_errno is set.
1087  */
1088 int
1089 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1090 {
1091         struct mlx5_priv *priv = dev->data->dev_private;
1092         uint16_t kern_mtu = 0;
1093         int ret;
1094
1095         ret = mlx5_get_mtu(dev, &kern_mtu);
1096         if (ret)
1097                 return ret;
1098         /* Set kernel interface MTU first. */
1099         ret = mlx5_set_mtu(dev, mtu);
1100         if (ret)
1101                 return ret;
1102         ret = mlx5_get_mtu(dev, &kern_mtu);
1103         if (ret)
1104                 return ret;
1105         if (kern_mtu == mtu) {
1106                 priv->mtu = mtu;
1107                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1108                         dev->data->port_id, mtu);
1109                 return 0;
1110         }
1111         rte_errno = EAGAIN;
1112         return -rte_errno;
1113 }
1114
1115 /**
1116  * DPDK callback to get flow control status.
1117  *
1118  * @param dev
1119  *   Pointer to Ethernet device structure.
1120  * @param[out] fc_conf
1121  *   Flow control output buffer.
1122  *
1123  * @return
1124  *   0 on success, a negative errno value otherwise and rte_errno is set.
1125  */
1126 int
1127 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1128 {
1129         struct ifreq ifr;
1130         struct ethtool_pauseparam ethpause = {
1131                 .cmd = ETHTOOL_GPAUSEPARAM
1132         };
1133         int ret;
1134
1135         ifr.ifr_data = (void *)&ethpause;
1136         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1137         if (ret) {
1138                 DRV_LOG(WARNING,
1139                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1140                         " %s",
1141                         dev->data->port_id, strerror(rte_errno));
1142                 return ret;
1143         }
1144         fc_conf->autoneg = ethpause.autoneg;
1145         if (ethpause.rx_pause && ethpause.tx_pause)
1146                 fc_conf->mode = RTE_FC_FULL;
1147         else if (ethpause.rx_pause)
1148                 fc_conf->mode = RTE_FC_RX_PAUSE;
1149         else if (ethpause.tx_pause)
1150                 fc_conf->mode = RTE_FC_TX_PAUSE;
1151         else
1152                 fc_conf->mode = RTE_FC_NONE;
1153         return 0;
1154 }
1155
1156 /**
1157  * DPDK callback to modify flow control parameters.
1158  *
1159  * @param dev
1160  *   Pointer to Ethernet device structure.
1161  * @param[in] fc_conf
1162  *   Flow control parameters.
1163  *
1164  * @return
1165  *   0 on success, a negative errno value otherwise and rte_errno is set.
1166  */
1167 int
1168 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1169 {
1170         struct ifreq ifr;
1171         struct ethtool_pauseparam ethpause = {
1172                 .cmd = ETHTOOL_SPAUSEPARAM
1173         };
1174         int ret;
1175
1176         ifr.ifr_data = (void *)&ethpause;
1177         ethpause.autoneg = fc_conf->autoneg;
1178         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1179             (fc_conf->mode & RTE_FC_RX_PAUSE))
1180                 ethpause.rx_pause = 1;
1181         else
1182                 ethpause.rx_pause = 0;
1183
1184         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1185             (fc_conf->mode & RTE_FC_TX_PAUSE))
1186                 ethpause.tx_pause = 1;
1187         else
1188                 ethpause.tx_pause = 0;
1189         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1190         if (ret) {
1191                 DRV_LOG(WARNING,
1192                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1193                         " failed: %s",
1194                         dev->data->port_id, strerror(rte_errno));
1195                 return ret;
1196         }
1197         return 0;
1198 }
1199
1200 /**
1201  * Get PCI information from struct ibv_device.
1202  *
1203  * @param device
1204  *   Pointer to Ethernet device structure.
1205  * @param[out] pci_addr
1206  *   PCI bus address output buffer.
1207  *
1208  * @return
1209  *   0 on success, a negative errno value otherwise and rte_errno is set.
1210  */
1211 int
1212 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1213                             struct rte_pci_addr *pci_addr)
1214 {
1215         FILE *file;
1216         char line[32];
1217         MKSTR(path, "%s/device/uevent", device->ibdev_path);
1218
1219         file = fopen(path, "rb");
1220         if (file == NULL) {
1221                 rte_errno = errno;
1222                 return -rte_errno;
1223         }
1224         while (fgets(line, sizeof(line), file) == line) {
1225                 size_t len = strlen(line);
1226                 int ret;
1227
1228                 /* Truncate long lines. */
1229                 if (len == (sizeof(line) - 1))
1230                         while (line[(len - 1)] != '\n') {
1231                                 ret = fgetc(file);
1232                                 if (ret == EOF)
1233                                         break;
1234                                 line[(len - 1)] = ret;
1235                         }
1236                 /* Extract information. */
1237                 if (sscanf(line,
1238                            "PCI_SLOT_NAME="
1239                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1240                            &pci_addr->domain,
1241                            &pci_addr->bus,
1242                            &pci_addr->devid,
1243                            &pci_addr->function) == 4) {
1244                         ret = 0;
1245                         break;
1246                 }
1247         }
1248         fclose(file);
1249         return 0;
1250 }
1251
1252 /**
1253  * Handle asynchronous removal event for entire multiport device.
1254  *
1255  * @param sh
1256  *   Infiniband device shared context.
1257  */
1258 static void
1259 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1260 {
1261         uint32_t i;
1262
1263         for (i = 0; i < sh->max_port; ++i) {
1264                 struct rte_eth_dev *dev;
1265
1266                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1267                         /*
1268                          * Or not existing port either no
1269                          * handler installed for this port.
1270                          */
1271                         continue;
1272                 }
1273                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1274                 assert(dev);
1275                 if (dev->data->dev_conf.intr_conf.rmv)
1276                         _rte_eth_dev_callback_process
1277                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1278         }
1279 }
1280
1281 /**
1282  * Handle shared asynchronous events the NIC (removal event
1283  * and link status change). Supports multiport IB device.
1284  *
1285  * @param cb_arg
1286  *   Callback argument.
1287  */
1288 void
1289 mlx5_dev_interrupt_handler(void *cb_arg)
1290 {
1291         struct mlx5_ibv_shared *sh = cb_arg;
1292         struct ibv_async_event event;
1293
1294         /* Read all message from the IB device and acknowledge them. */
1295         for (;;) {
1296                 struct rte_eth_dev *dev;
1297                 uint32_t tmp;
1298
1299                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1300                         break;
1301                 /* Retrieve and check IB port index. */
1302                 tmp = (uint32_t)event.element.port_num;
1303                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1304                         /*
1305                          * The DEVICE_FATAL event is called once for
1306                          * entire device without port specifying.
1307                          * We should notify all existing ports.
1308                          */
1309                         mlx5_glue->ack_async_event(&event);
1310                         mlx5_dev_interrupt_device_fatal(sh);
1311                         continue;
1312                 }
1313                 assert(tmp && (tmp <= sh->max_port));
1314                 if (!tmp) {
1315                         /* Unsupported devive level event. */
1316                         mlx5_glue->ack_async_event(&event);
1317                         DRV_LOG(DEBUG,
1318                                 "unsupported common event (type %d)",
1319                                 event.event_type);
1320                         continue;
1321                 }
1322                 if (tmp > sh->max_port) {
1323                         /* Invalid IB port index. */
1324                         mlx5_glue->ack_async_event(&event);
1325                         DRV_LOG(DEBUG,
1326                                 "cannot handle an event (type %d)"
1327                                 "due to invalid IB port index (%u)",
1328                                 event.event_type, tmp);
1329                         continue;
1330                 }
1331                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1332                         /* No handler installed. */
1333                         mlx5_glue->ack_async_event(&event);
1334                         DRV_LOG(DEBUG,
1335                                 "cannot handle an event (type %d)"
1336                                 "due to no handler installed for port %u",
1337                                 event.event_type, tmp);
1338                         continue;
1339                 }
1340                 /* Retrieve ethernet device descriptor. */
1341                 tmp = sh->port[tmp - 1].ih_port_id;
1342                 dev = &rte_eth_devices[tmp];
1343                 assert(dev);
1344                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1345                      event.event_type == IBV_EVENT_PORT_ERR) &&
1346                         dev->data->dev_conf.intr_conf.lsc) {
1347                         mlx5_glue->ack_async_event(&event);
1348                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1349                                 usleep(0);
1350                                 continue;
1351                         }
1352                         _rte_eth_dev_callback_process
1353                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1354                         continue;
1355                 }
1356                 DRV_LOG(DEBUG,
1357                         "port %u cannot handle an unknown event (type %d)",
1358                         dev->data->port_id, event.event_type);
1359                 mlx5_glue->ack_async_event(&event);
1360         }
1361 }
1362
1363 /*
1364  * Unregister callback handler safely. The handler may be active
1365  * while we are trying to unregister it, in this case code -EAGAIN
1366  * is returned by rte_intr_callback_unregister(). This routine checks
1367  * the return code and tries to unregister handler again.
1368  *
1369  * @param handle
1370  *   interrupt handle
1371  * @param cb_fn
1372  *   pointer to callback routine
1373  * @cb_arg
1374  *   opaque callback parameter
1375  */
1376 void
1377 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
1378                               rte_intr_callback_fn cb_fn, void *cb_arg)
1379 {
1380         /*
1381          * Try to reduce timeout management overhead by not calling
1382          * the timer related routines on the first iteration. If the
1383          * unregistering succeeds on first call there will be no
1384          * timer calls at all.
1385          */
1386         uint64_t twait = 0;
1387         uint64_t start = 0;
1388
1389         do {
1390                 int ret;
1391
1392                 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
1393                 if (ret >= 0)
1394                         return;
1395                 if (ret != -EAGAIN) {
1396                         DRV_LOG(INFO, "failed to unregister interrupt"
1397                                       " handler (error: %d)", ret);
1398                         assert(false);
1399                         return;
1400                 }
1401                 if (twait) {
1402                         struct timespec onems;
1403
1404                         /* Wait one millisecond and try again. */
1405                         onems.tv_sec = 0;
1406                         onems.tv_nsec = NS_PER_S / MS_PER_S;
1407                         nanosleep(&onems, 0);
1408                         /* Check whether one second elapsed. */
1409                         if ((rte_get_timer_cycles() - start) <= twait)
1410                                 continue;
1411                 } else {
1412                         /*
1413                          * We get the amount of timer ticks for one second.
1414                          * If this amount elapsed it means we spent one
1415                          * second in waiting. This branch is executed once
1416                          * on first iteration.
1417                          */
1418                         twait = rte_get_timer_hz();
1419                         assert(twait);
1420                 }
1421                 /*
1422                  * Timeout elapsed, show message (once a second) and retry.
1423                  * We have no other acceptable option here, if we ignore
1424                  * the unregistering return code the handler will not
1425                  * be unregistered, fd will be closed and we may get the
1426                  * crush. Hanging and messaging in the loop seems not to be
1427                  * the worst choice.
1428                  */
1429                 DRV_LOG(INFO, "Retrying to unregister interrupt handler");
1430                 start = rte_get_timer_cycles();
1431         } while (true);
1432 }
1433
1434 /**
1435  * Uninstall shared asynchronous device events handler.
1436  * This function is implemented to support event sharing
1437  * between multiple ports of single IB device.
1438  *
1439  * @param dev
1440  *   Pointer to Ethernet device.
1441  */
1442 static void
1443 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1444 {
1445         struct mlx5_priv *priv = dev->data->dev_private;
1446         struct mlx5_ibv_shared *sh = priv->sh;
1447
1448         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1449                 return;
1450         pthread_mutex_lock(&sh->intr_mutex);
1451         assert(priv->ibv_port);
1452         assert(priv->ibv_port <= sh->max_port);
1453         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1454         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1455                 goto exit;
1456         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1457                                         (uint32_t)dev->data->port_id);
1458         assert(sh->intr_cnt);
1459         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1460         if (!sh->intr_cnt || --sh->intr_cnt)
1461                 goto exit;
1462         mlx5_intr_callback_unregister(&sh->intr_handle,
1463                                      mlx5_dev_interrupt_handler, sh);
1464         sh->intr_handle.fd = 0;
1465         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1466 exit:
1467         pthread_mutex_unlock(&sh->intr_mutex);
1468 }
1469
1470 /**
1471  * Install shared asynchronous device events handler.
1472  * This function is implemented to support event sharing
1473  * between multiple ports of single IB device.
1474  *
1475  * @param dev
1476  *   Pointer to Ethernet device.
1477  */
1478 static void
1479 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1480 {
1481         struct mlx5_priv *priv = dev->data->dev_private;
1482         struct mlx5_ibv_shared *sh = priv->sh;
1483         int ret;
1484         int flags;
1485
1486         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1487                 return;
1488         pthread_mutex_lock(&sh->intr_mutex);
1489         assert(priv->ibv_port);
1490         assert(priv->ibv_port <= sh->max_port);
1491         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1492         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1493                 /* The handler is already installed for this port. */
1494                 assert(sh->intr_cnt);
1495                 goto exit;
1496         }
1497         sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id;
1498         if (sh->intr_cnt) {
1499                 sh->intr_cnt++;
1500                 goto exit;
1501         }
1502         /* No shared handler installed. */
1503         assert(sh->ctx->async_fd > 0);
1504         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1505         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1506         if (ret) {
1507                 DRV_LOG(INFO, "failed to change file descriptor"
1508                               " async event queue");
1509                 /* Indicate there will be no interrupts. */
1510                 dev->data->dev_conf.intr_conf.lsc = 0;
1511                 dev->data->dev_conf.intr_conf.rmv = 0;
1512                 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1513                 goto exit;
1514         }
1515         sh->intr_handle.fd = sh->ctx->async_fd;
1516         sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1517         rte_intr_callback_register(&sh->intr_handle,
1518                                    mlx5_dev_interrupt_handler, sh);
1519         sh->intr_cnt++;
1520 exit:
1521         pthread_mutex_unlock(&sh->intr_mutex);
1522 }
1523
1524 /**
1525  * Uninstall interrupt handler.
1526  *
1527  * @param dev
1528  *   Pointer to Ethernet device.
1529  */
1530 void
1531 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1532 {
1533         mlx5_dev_shared_handler_uninstall(dev);
1534 }
1535
1536 /**
1537  * Install interrupt handler.
1538  *
1539  * @param dev
1540  *   Pointer to Ethernet device.
1541  */
1542 void
1543 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1544 {
1545         mlx5_dev_shared_handler_install(dev);
1546 }
1547
1548 /**
1549  * DPDK callback to bring the link DOWN.
1550  *
1551  * @param dev
1552  *   Pointer to Ethernet device structure.
1553  *
1554  * @return
1555  *   0 on success, a negative errno value otherwise and rte_errno is set.
1556  */
1557 int
1558 mlx5_set_link_down(struct rte_eth_dev *dev)
1559 {
1560         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1561 }
1562
1563 /**
1564  * DPDK callback to bring the link UP.
1565  *
1566  * @param dev
1567  *   Pointer to Ethernet device structure.
1568  *
1569  * @return
1570  *   0 on success, a negative errno value otherwise and rte_errno is set.
1571  */
1572 int
1573 mlx5_set_link_up(struct rte_eth_dev *dev)
1574 {
1575         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1576 }
1577
1578 /**
1579  * Configure the TX function to use.
1580  *
1581  * @param dev
1582  *   Pointer to private data structure.
1583  *
1584  * @return
1585  *   Pointer to selected Tx burst function.
1586  */
1587 eth_tx_burst_t
1588 mlx5_select_tx_function(struct rte_eth_dev *dev)
1589 {
1590         struct mlx5_priv *priv = dev->data->dev_private;
1591         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1592         struct mlx5_dev_config *config = &priv->config;
1593         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1594         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1595                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1596                                     DEV_TX_OFFLOAD_GRE_TNL_TSO |
1597                                     DEV_TX_OFFLOAD_IP_TNL_TSO |
1598                                     DEV_TX_OFFLOAD_UDP_TNL_TSO));
1599         int swp = !!(tx_offloads & (DEV_TX_OFFLOAD_IP_TNL_TSO |
1600                                     DEV_TX_OFFLOAD_UDP_TNL_TSO |
1601                                     DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM));
1602         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1603
1604         assert(priv != NULL);
1605         /* Select appropriate TX function. */
1606         if (vlan_insert || tso || swp)
1607                 return tx_pkt_burst;
1608         if (config->mps == MLX5_MPW_ENHANCED) {
1609                 if (mlx5_check_vec_tx_support(dev) > 0) {
1610                         if (mlx5_check_raw_vec_tx_support(dev) > 0)
1611                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1612                         else
1613                                 tx_pkt_burst = mlx5_tx_burst_vec;
1614                         DRV_LOG(DEBUG,
1615                                 "port %u selected enhanced MPW Tx vectorized"
1616                                 " function",
1617                                 dev->data->port_id);
1618                 } else {
1619                         tx_pkt_burst = mlx5_tx_burst_empw;
1620                         DRV_LOG(DEBUG,
1621                                 "port %u selected enhanced MPW Tx function",
1622                                 dev->data->port_id);
1623                 }
1624         } else if (config->mps && (config->txq_inline > 0)) {
1625                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1626                 DRV_LOG(DEBUG, "port %u selected MPW inline Tx function",
1627                         dev->data->port_id);
1628         } else if (config->mps) {
1629                 tx_pkt_burst = mlx5_tx_burst_mpw;
1630                 DRV_LOG(DEBUG, "port %u selected MPW Tx function",
1631                         dev->data->port_id);
1632         }
1633         return tx_pkt_burst;
1634 }
1635
1636 /**
1637  * Configure the RX function to use.
1638  *
1639  * @param dev
1640  *   Pointer to private data structure.
1641  *
1642  * @return
1643  *   Pointer to selected Rx burst function.
1644  */
1645 eth_rx_burst_t
1646 mlx5_select_rx_function(struct rte_eth_dev *dev)
1647 {
1648         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1649
1650         assert(dev != NULL);
1651         if (mlx5_check_vec_rx_support(dev) > 0) {
1652                 rx_pkt_burst = mlx5_rx_burst_vec;
1653                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1654                         dev->data->port_id);
1655         } else if (mlx5_mprq_enabled(dev)) {
1656                 rx_pkt_burst = mlx5_rx_burst_mprq;
1657         }
1658         return rx_pkt_burst;
1659 }
1660
1661 /**
1662  * Check if mlx5 device was removed.
1663  *
1664  * @param dev
1665  *   Pointer to Ethernet device structure.
1666  *
1667  * @return
1668  *   1 when device is removed, otherwise 0.
1669  */
1670 int
1671 mlx5_is_removed(struct rte_eth_dev *dev)
1672 {
1673         struct ibv_device_attr device_attr;
1674         struct mlx5_priv *priv = dev->data->dev_private;
1675
1676         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1677                 return 1;
1678         return 0;
1679 }
1680
1681 /**
1682  * Get port ID list of mlx5 instances sharing a common device.
1683  *
1684  * @param[in] dev
1685  *   Device to look for.
1686  * @param[out] port_list
1687  *   Result buffer for collected port IDs.
1688  * @param port_list_n
1689  *   Maximum number of entries in result buffer. If 0, @p port_list can be
1690  *   NULL.
1691  *
1692  * @return
1693  *   Number of matching instances regardless of the @p port_list_n
1694  *   parameter, 0 if none were found.
1695  */
1696 unsigned int
1697 mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list,
1698                     unsigned int port_list_n)
1699 {
1700         uint16_t id;
1701         unsigned int n = 0;
1702
1703         RTE_ETH_FOREACH_DEV_OF(id, dev) {
1704                 if (n < port_list_n)
1705                         port_list[n] = id;
1706                 n++;
1707         }
1708         return n;
1709 }
1710
1711 /**
1712  * Get the E-Switch domain id this port belongs to.
1713  *
1714  * @param[in] port
1715  *   Device port id.
1716  * @param[out] es_domain_id
1717  *   E-Switch domain id.
1718  * @param[out] es_port_id
1719  *   The port id of the port in the E-Switch.
1720  *
1721  * @return
1722  *   0 on success, a negative errno value otherwise and rte_errno is set.
1723  */
1724 int
1725 mlx5_port_to_eswitch_info(uint16_t port,
1726                           uint16_t *es_domain_id, uint16_t *es_port_id)
1727 {
1728         struct rte_eth_dev *dev;
1729         struct mlx5_priv *priv;
1730
1731         if (port >= RTE_MAX_ETHPORTS) {
1732                 rte_errno = EINVAL;
1733                 return -rte_errno;
1734         }
1735         if (!rte_eth_dev_is_valid_port(port)) {
1736                 rte_errno = ENODEV;
1737                 return -rte_errno;
1738         }
1739         dev = &rte_eth_devices[port];
1740         priv = dev->data->dev_private;
1741         if (!(priv->representor || priv->master)) {
1742                 rte_errno = EINVAL;
1743                 return -rte_errno;
1744         }
1745         if (es_domain_id)
1746                 *es_domain_id = priv->domain_id;
1747         if (es_port_id)
1748                 *es_port_id = priv->vport_id;
1749         return 0;
1750 }
1751
1752 /**
1753  * Get switch information associated with network interface.
1754  *
1755  * @param ifindex
1756  *   Network interface index.
1757  * @param[out] info
1758  *   Switch information object, populated in case of success.
1759  *
1760  * @return
1761  *   0 on success, a negative errno value otherwise and rte_errno is set.
1762  */
1763 int
1764 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1765 {
1766         char ifname[IF_NAMESIZE];
1767         char port_name[IF_NAMESIZE];
1768         FILE *file;
1769         struct mlx5_switch_info data = {
1770                 .master = 0,
1771                 .representor = 0,
1772                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1773                 .port_name = 0,
1774                 .switch_id = 0,
1775         };
1776         DIR *dir;
1777         bool port_switch_id_set = false;
1778         bool device_dir = false;
1779         char c;
1780         int ret;
1781
1782         if (!if_indextoname(ifindex, ifname)) {
1783                 rte_errno = errno;
1784                 return -rte_errno;
1785         }
1786
1787         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1788               ifname);
1789         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1790               ifname);
1791         MKSTR(pci_device, "/sys/class/net/%s/device",
1792               ifname);
1793
1794         file = fopen(phys_port_name, "rb");
1795         if (file != NULL) {
1796                 ret = fscanf(file, "%s", port_name);
1797                 fclose(file);
1798                 if (ret == 1)
1799                         mlx5_translate_port_name(port_name, &data);
1800         }
1801         file = fopen(phys_switch_id, "rb");
1802         if (file == NULL) {
1803                 rte_errno = errno;
1804                 return -rte_errno;
1805         }
1806         port_switch_id_set =
1807                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1808                 c == '\n';
1809         fclose(file);
1810         dir = opendir(pci_device);
1811         if (dir != NULL) {
1812                 closedir(dir);
1813                 device_dir = true;
1814         }
1815         if (port_switch_id_set) {
1816                 /* We have some E-Switch configuration. */
1817                 mlx5_sysfs_check_switch_info(device_dir, &data);
1818         }
1819         *info = data;
1820         assert(!(data.master && data.representor));
1821         if (data.master && data.representor) {
1822                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1823                              " and as representor", ifindex);
1824                 rte_errno = ENODEV;
1825                 return -rte_errno;
1826         }
1827         return 0;
1828 }
1829
1830 /**
1831  * Analyze gathered port parameters via Netlink to recognize master
1832  * and representor devices for E-Switch configuration.
1833  *
1834  * @param[in] num_vf_set
1835  *   flag of presence of number of VFs port attribute.
1836  * @param[inout] switch_info
1837  *   Port information, including port name as a number and port name
1838  *   type if recognized
1839  *
1840  * @return
1841  *   master and representor flags are set in switch_info according to
1842  *   recognized parameters (if any).
1843  */
1844 void
1845 mlx5_nl_check_switch_info(bool num_vf_set,
1846                           struct mlx5_switch_info *switch_info)
1847 {
1848         switch (switch_info->name_type) {
1849         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1850                 /*
1851                  * Name is not recognized, assume the master,
1852                  * check the number of VFs key presence.
1853                  */
1854                 switch_info->master = num_vf_set;
1855                 break;
1856         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1857                 /*
1858                  * Name is not set, this assumes the legacy naming
1859                  * schema for master, just check if there is a
1860                  * number of VFs key.
1861                  */
1862                 switch_info->master = num_vf_set;
1863                 break;
1864         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1865                 /* New uplink naming schema recognized. */
1866                 switch_info->master = 1;
1867                 break;
1868         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1869                 /* Legacy representors naming schema. */
1870                 switch_info->representor = !num_vf_set;
1871                 break;
1872         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1873                 /* New representors naming schema. */
1874                 switch_info->representor = 1;
1875                 break;
1876         }
1877 }
1878
1879 /**
1880  * Analyze gathered port parameters via sysfs to recognize master
1881  * and representor devices for E-Switch configuration.
1882  *
1883  * @param[in] device_dir
1884  *   flag of presence of "device" directory under port device key.
1885  * @param[inout] switch_info
1886  *   Port information, including port name as a number and port name
1887  *   type if recognized
1888  *
1889  * @return
1890  *   master and representor flags are set in switch_info according to
1891  *   recognized parameters (if any).
1892  */
1893 void
1894 mlx5_sysfs_check_switch_info(bool device_dir,
1895                              struct mlx5_switch_info *switch_info)
1896 {
1897         switch (switch_info->name_type) {
1898         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1899                 /*
1900                  * Name is not recognized, assume the master,
1901                  * check the device directory presence.
1902                  */
1903                 switch_info->master = device_dir;
1904                 break;
1905         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1906                 /*
1907                  * Name is not set, this assumes the legacy naming
1908                  * schema for master, just check if there is
1909                  * a device directory.
1910                  */
1911                 switch_info->master = device_dir;
1912                 break;
1913         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1914                 /* New uplink naming schema recognized. */
1915                 switch_info->master = 1;
1916                 break;
1917         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1918                 /* Legacy representors naming schema. */
1919                 switch_info->representor = !device_dir;
1920                 break;
1921         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1922                 /* New representors naming schema. */
1923                 switch_info->representor = 1;
1924                 break;
1925         }
1926 }
1927
1928 /**
1929  * Extract port name, as a number, from sysfs or netlink information.
1930  *
1931  * @param[in] port_name_in
1932  *   String representing the port name.
1933  * @param[out] port_info_out
1934  *   Port information, including port name as a number and port name
1935  *   type if recognized
1936  *
1937  * @return
1938  *   port_name field set according to recognized name format.
1939  */
1940 void
1941 mlx5_translate_port_name(const char *port_name_in,
1942                          struct mlx5_switch_info *port_info_out)
1943 {
1944         char pf_c1, pf_c2, vf_c1, vf_c2;
1945         char *end;
1946         int sc_items;
1947
1948         /*
1949          * Check for port-name as a string of the form pf0vf0
1950          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
1951          */
1952         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
1953                           &pf_c1, &pf_c2, &port_info_out->pf_num,
1954                           &vf_c1, &vf_c2, &port_info_out->port_name);
1955         if (sc_items == 6 &&
1956             pf_c1 == 'p' && pf_c2 == 'f' &&
1957             vf_c1 == 'v' && vf_c2 == 'f') {
1958                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
1959                 return;
1960         }
1961         /*
1962          * Check for port-name as a string of the form p0
1963          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
1964          */
1965         sc_items = sscanf(port_name_in, "%c%d",
1966                           &pf_c1, &port_info_out->port_name);
1967         if (sc_items == 2 && pf_c1 == 'p') {
1968                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
1969                 return;
1970         }
1971         /* Check for port-name as a number (support kernel ver < 5.0 */
1972         errno = 0;
1973         port_info_out->port_name = strtol(port_name_in, &end, 0);
1974         if (!errno &&
1975             (size_t)(end - port_name_in) == strlen(port_name_in)) {
1976                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
1977                 return;
1978         }
1979         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
1980         return;
1981 }