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 <stdbool.h>
  11 #include <stdint.h>
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <errno.h>
  16 #include <dirent.h>
  17 #include <net/if.h>
  18 #include <sys/ioctl.h>
  19 #include <sys/socket.h>
  20 #include <netinet/in.h>
  21 #include <linux/ethtool.h>
  22 #include <linux/sockios.h>
  23 #include <fcntl.h>
  24 #include <stdalign.h>
  25 #include <sys/un.h>
  26 #include <time.h>
  27
  28 #include <rte_atomic.h>
  29 #include <rte_ethdev_driver.h>
  30 #include <rte_bus_pci.h>
  31 #include <rte_mbuf.h>
  32 #include <rte_common.h>
  33 #include <rte_interrupts.h>
  34 #include <rte_malloc.h>
  35 #include <rte_string_fns.h>
  36 #include <rte_rwlock.h>
  37 #include <rte_cycles.h>
  38
  39 #include "mlx5.h"
  40 #include "mlx5_glue.h"
  41 #include "mlx5_devx_cmds.h"
  42 #include "mlx5_rxtx.h"
  43 #include "mlx5_utils.h"
  44
  45 /* Supported speed values found in /usr/include/linux/ethtool.h */
  46 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
  47 #define SUPPORTED_40000baseKR4_Full (1 << 23)
  48 #endif
  49 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
  50 #define SUPPORTED_40000baseCR4_Full (1 << 24)
  51 #endif
  52 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
  53 #define SUPPORTED_40000baseSR4_Full (1 << 25)
  54 #endif
  55 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
  56 #define SUPPORTED_40000baseLR4_Full (1 << 26)
  57 #endif
  58 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
  59 #define SUPPORTED_56000baseKR4_Full (1 << 27)
  60 #endif
  61 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
  62 #define SUPPORTED_56000baseCR4_Full (1 << 28)
  63 #endif
  64 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
  65 #define SUPPORTED_56000baseSR4_Full (1 << 29)
  66 #endif
  67 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
  68 #define SUPPORTED_56000baseLR4_Full (1 << 30)
  69 #endif
  70
  71 /* Add defines in case the running kernel is not the same as user headers. */
  72 #ifndef ETHTOOL_GLINKSETTINGS
  73 struct ethtool_link_settings {
  74         uint32_t cmd;
  75         uint32_t speed;
  76         uint8_t duplex;
  77         uint8_t port;
  78         uint8_t phy_address;
  79         uint8_t autoneg;
  80         uint8_t mdio_support;
  81         uint8_t eth_to_mdix;
  82         uint8_t eth_tp_mdix_ctrl;
  83         int8_t link_mode_masks_nwords;
  84         uint32_t reserved[8];
  85         uint32_t link_mode_masks[];
  86 };
  87
  88 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  89 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  90 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  91 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  92 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  93 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  94 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  95 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  96 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  97 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  98 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  99 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
 100 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
 101 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
 102 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 103 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 104 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 105 #endif
 106 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 107 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 108 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 109 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 110 #endif
 111 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 112 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 113 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 114 #endif
 115 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 116 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 117 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 118 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 119 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 120 #endif
 121
 122 /**
 123  * Get master interface name from private structure.
 124  *
 125  * @param[in] dev
 126  *   Pointer to Ethernet device.
 127  * @param[out] ifname
 128  *   Interface name output buffer.
 129  *
 130  * @return
 131  *   0 on success, a negative errno value otherwise and rte_errno is set.
 132  */
 133 int
 134 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
 135 {
 136         DIR *dir;
 137         struct dirent *dent;
 138         unsigned int dev_type = 0;
 139         unsigned int dev_port_prev = ~0u;
 140         char match[IF_NAMESIZE] = "";
 141
 142         assert(ibdev_path);
 143         {
 144                 MKSTR(path, "%s/device/net", ibdev_path);
 145
 146                 dir = opendir(path);
 147                 if (dir == NULL) {
 148                         rte_errno = errno;
 149                         return -rte_errno;
 150                 }
 151         }
 152         while ((dent = readdir(dir)) != NULL) {
 153                 char *name = dent->d_name;
 154                 FILE *file;
 155                 unsigned int dev_port;
 156                 int r;
 157
 158                 if ((name[0] == '.') &&
 159                     ((name[1] == '\0') ||
 160                      ((name[1] == '.') && (name[2] == '\0'))))
 161                         continue;
 162
 163                 MKSTR(path, "%s/device/net/%s/%s",
 164                       ibdev_path, name,
 165                       (dev_type ? "dev_id" : "dev_port"));
 166
 167                 file = fopen(path, "rb");
 168                 if (file == NULL) {
 169                         if (errno != ENOENT)
 170                                 continue;
 171                         /*
 172                          * Switch to dev_id when dev_port does not exist as
 173                          * is the case with Linux kernel versions < 3.15.
 174                          */
 175 try_dev_id:
 176                         match[0] = '\0';
 177                         if (dev_type)
 178                                 break;
 179                         dev_type = 1;
 180                         dev_port_prev = ~0u;
 181                         rewinddir(dir);
 182                         continue;
 183                 }
 184                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 185                 fclose(file);
 186                 if (r != 1)
 187                         continue;
 188                 /*
 189                  * Switch to dev_id when dev_port returns the same value for
 190                  * all ports. May happen when using a MOFED release older than
 191                  * 3.0 with a Linux kernel >= 3.15.
 192                  */
 193                 if (dev_port == dev_port_prev)
 194                         goto try_dev_id;
 195                 dev_port_prev = dev_port;
 196                 if (dev_port == 0)
 197                         strlcpy(match, name, sizeof(match));
 198         }
 199         closedir(dir);
 200         if (match[0] == '\0') {
 201                 rte_errno = ENOENT;
 202                 return -rte_errno;
 203         }
 204         strncpy(*ifname, match, sizeof(*ifname));
 205         return 0;
 206 }
 207
 208 /**
 209  * Get interface name from private structure.
 210  *
 211  * This is a port representor-aware version of mlx5_get_master_ifname().
 212  *
 213  * @param[in] dev
 214  *   Pointer to Ethernet device.
 215  * @param[out] ifname
 216  *   Interface name output buffer.
 217  *
 218  * @return
 219  *   0 on success, a negative errno value otherwise and rte_errno is set.
 220  */
 221 int
 222 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 223 {
 224         struct mlx5_priv *priv = dev->data->dev_private;
 225         unsigned int ifindex;
 226
 227         assert(priv);
 228         assert(priv->sh);
 229         ifindex = mlx5_ifindex(dev);
 230         if (!ifindex) {
 231                 if (!priv->representor)
 232                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
 233                                                       ifname);
 234                 rte_errno = ENXIO;
 235                 return -rte_errno;
 236         }
 237         if (if_indextoname(ifindex, &(*ifname)[0]))
 238                 return 0;
 239         rte_errno = errno;
 240         return -rte_errno;
 241 }
 242
 243 /**
 244  * Get the interface index from device name.
 245  *
 246  * @param[in] dev
 247  *   Pointer to Ethernet device.
 248  *
 249  * @return
 250  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
 251  */
 252 unsigned int
 253 mlx5_ifindex(const struct rte_eth_dev *dev)
 254 {
 255         struct mlx5_priv *priv = dev->data->dev_private;
 256         unsigned int ifindex;
 257
 258         assert(priv);
 259         assert(priv->if_index);
 260         ifindex = priv->if_index;
 261         if (!ifindex)
 262                 rte_errno = ENXIO;
 263         return ifindex;
 264 }
 265
 266 /**
 267  * Perform ifreq ioctl() on associated Ethernet device.
 268  *
 269  * @param[in] dev
 270  *   Pointer to Ethernet device.
 271  * @param req
 272  *   Request number to pass to ioctl().
 273  * @param[out] ifr
 274  *   Interface request structure output buffer.
 275  *
 276  * @return
 277  *   0 on success, a negative errno value otherwise and rte_errno is set.
 278  */
 279 int
 280 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 281 {
 282         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 283         int ret = 0;
 284
 285         if (sock == -1) {
 286                 rte_errno = errno;
 287                 return -rte_errno;
 288         }
 289         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 290         if (ret)
 291                 goto error;
 292         ret = ioctl(sock, req, ifr);
 293         if (ret == -1) {
 294                 rte_errno = errno;
 295                 goto error;
 296         }
 297         close(sock);
 298         return 0;
 299 error:
 300         close(sock);
 301         return -rte_errno;
 302 }
 303
 304 /**
 305  * Get device MTU.
 306  *
 307  * @param dev
 308  *   Pointer to Ethernet device.
 309  * @param[out] mtu
 310  *   MTU value output buffer.
 311  *
 312  * @return
 313  *   0 on success, a negative errno value otherwise and rte_errno is set.
 314  */
 315 int
 316 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 317 {
 318         struct ifreq request;
 319         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 320
 321         if (ret)
 322                 return ret;
 323         *mtu = request.ifr_mtu;
 324         return 0;
 325 }
 326
 327 /**
 328  * Set device MTU.
 329  *
 330  * @param dev
 331  *   Pointer to Ethernet device.
 332  * @param mtu
 333  *   MTU value to set.
 334  *
 335  * @return
 336  *   0 on success, a negative errno value otherwise and rte_errno is set.
 337  */
 338 static int
 339 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 340 {
 341         struct ifreq request = { .ifr_mtu = mtu, };
 342
 343         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 344 }
 345
 346 /**
 347  * Set device flags.
 348  *
 349  * @param dev
 350  *   Pointer to Ethernet device.
 351  * @param keep
 352  *   Bitmask for flags that must remain untouched.
 353  * @param flags
 354  *   Bitmask for flags to modify.
 355  *
 356  * @return
 357  *   0 on success, a negative errno value otherwise and rte_errno is set.
 358  */
 359 int
 360 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 361 {
 362         struct ifreq request;
 363         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 364
 365         if (ret)
 366                 return ret;
 367         request.ifr_flags &= keep;
 368         request.ifr_flags |= flags & ~keep;
 369         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 370 }
 371
 372 /**
 373  * DPDK callback for Ethernet device configuration.
 374  *
 375  * @param dev
 376  *   Pointer to Ethernet device structure.
 377  *
 378  * @return
 379  *   0 on success, a negative errno value otherwise and rte_errno is set.
 380  */
 381 int
 382 mlx5_dev_configure(struct rte_eth_dev *dev)
 383 {
 384         struct mlx5_priv *priv = dev->data->dev_private;
 385         unsigned int rxqs_n = dev->data->nb_rx_queues;
 386         unsigned int txqs_n = dev->data->nb_tx_queues;
 387         const uint8_t use_app_rss_key =
 388                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 389         int ret = 0;
 390
 391         if (use_app_rss_key &&
 392             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 393              MLX5_RSS_HASH_KEY_LEN)) {
 394                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
 395                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
 396                 rte_errno = EINVAL;
 397                 return -rte_errno;
 398         }
 399         priv->rss_conf.rss_key =
 400                 rte_realloc(priv->rss_conf.rss_key,
 401                             MLX5_RSS_HASH_KEY_LEN, 0);
 402         if (!priv->rss_conf.rss_key) {
 403                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 404                         dev->data->port_id, rxqs_n);
 405                 rte_errno = ENOMEM;
 406                 return -rte_errno;
 407         }
 408
 409         if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG)
 410                 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 411
 412         memcpy(priv->rss_conf.rss_key,
 413                use_app_rss_key ?
 414                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 415                rss_hash_default_key,
 416                MLX5_RSS_HASH_KEY_LEN);
 417         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 418         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 419         priv->rxqs = (void *)dev->data->rx_queues;
 420         priv->txqs = (void *)dev->data->tx_queues;
 421         if (txqs_n != priv->txqs_n) {
 422                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 423                         dev->data->port_id, priv->txqs_n, txqs_n);
 424                 priv->txqs_n = txqs_n;
 425         }
 426         if (rxqs_n > priv->config.ind_table_max_size) {
 427                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 428                         dev->data->port_id, rxqs_n);
 429                 rte_errno = EINVAL;
 430                 return -rte_errno;
 431         }
 432         if (rxqs_n != priv->rxqs_n) {
 433                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 434                         dev->data->port_id, priv->rxqs_n, rxqs_n);
 435                 priv->rxqs_n = rxqs_n;
 436         }
 437         priv->skip_default_rss_reta = 0;
 438         ret = mlx5_proc_priv_init(dev);
 439         if (ret)
 440                 return ret;
 441         return 0;
 442 }
 443
 444 /**
 445  * Configure default RSS reta.
 446  *
 447  * @param dev
 448  *   Pointer to Ethernet device structure.
 449  *
 450  * @return
 451  *   0 on success, a negative errno value otherwise and rte_errno is set.
 452  */
 453 int
 454 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
 455 {
 456         struct mlx5_priv *priv = dev->data->dev_private;
 457         unsigned int rxqs_n = dev->data->nb_rx_queues;
 458         unsigned int i;
 459         unsigned int j;
 460         unsigned int reta_idx_n;
 461         int ret = 0;
 462         unsigned int *rss_queue_arr = NULL;
 463         unsigned int rss_queue_n = 0;
 464
 465         if (priv->skip_default_rss_reta)
 466                 return ret;
 467         rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0);
 468         if (!rss_queue_arr) {
 469                 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
 470                         dev->data->port_id, rxqs_n);
 471                 rte_errno = ENOMEM;
 472                 return -rte_errno;
 473         }
 474         for (i = 0, j = 0; i < rxqs_n; i++) {
 475                 struct mlx5_rxq_data *rxq_data;
 476                 struct mlx5_rxq_ctrl *rxq_ctrl;
 477
 478                 rxq_data = (*priv->rxqs)[i];
 479                 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
 480                 if (rxq_ctrl && rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
 481                         rss_queue_arr[j++] = i;
 482         }
 483         rss_queue_n = j;
 484         if (rss_queue_n > priv->config.ind_table_max_size) {
 485                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 486                         dev->data->port_id, rss_queue_n);
 487                 rte_errno = EINVAL;
 488                 rte_free(rss_queue_arr);
 489                 return -rte_errno;
 490         }
 491         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 492                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 493         priv->rxqs_n = rxqs_n;
 494         /*
 495          * If the requested number of RX queues is not a power of two,
 496          * use the maximum indirection table size for better balancing.
 497          * The result is always rounded to the next power of two.
 498          */
 499         reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
 500                                 priv->config.ind_table_max_size :
 501                                 rss_queue_n));
 502         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 503         if (ret) {
 504                 rte_free(rss_queue_arr);
 505                 return ret;
 506         }
 507         /*
 508          * When the number of RX queues is not a power of two,
 509          * the remaining table entries are padded with reused WQs
 510          * and hashes are not spread uniformly.
 511          */
 512         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 513                 (*priv->reta_idx)[i] = rss_queue_arr[j];
 514                 if (++j == rss_queue_n)
 515                         j = 0;
 516         }
 517         rte_free(rss_queue_arr);
 518         return ret;
 519 }
 520
 521 /**
 522  * Sets default tuning parameters.
 523  *
 524  * @param dev
 525  *   Pointer to Ethernet device.
 526  * @param[out] info
 527  *   Info structure output buffer.
 528  */
 529 static void
 530 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 531 {
 532         struct mlx5_priv *priv = dev->data->dev_private;
 533
 534         /* Minimum CPU utilization. */
 535         info->default_rxportconf.ring_size = 256;
 536         info->default_txportconf.ring_size = 256;
 537         info->default_rxportconf.burst_size = MLX5_RX_DEFAULT_BURST;
 538         info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST;
 539         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 540                 info->default_rxportconf.nb_queues = 16;
 541                 info->default_txportconf.nb_queues = 16;
 542                 if (dev->data->nb_rx_queues > 2 ||
 543                     dev->data->nb_tx_queues > 2) {
 544                         /* Max Throughput. */
 545                         info->default_rxportconf.ring_size = 2048;
 546                         info->default_txportconf.ring_size = 2048;
 547                 }
 548         } else {
 549                 info->default_rxportconf.nb_queues = 8;
 550                 info->default_txportconf.nb_queues = 8;
 551                 if (dev->data->nb_rx_queues > 2 ||
 552                     dev->data->nb_tx_queues > 2) {
 553                         /* Max Throughput. */
 554                         info->default_rxportconf.ring_size = 4096;
 555                         info->default_txportconf.ring_size = 4096;
 556                 }
 557         }
 558 }
 559
 560 /**
 561  * Sets tx mbuf limiting parameters.
 562  *
 563  * @param dev
 564  *   Pointer to Ethernet device.
 565  * @param[out] info
 566  *   Info structure output buffer.
 567  */
 568 static void
 569 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 570 {
 571         struct mlx5_priv *priv = dev->data->dev_private;
 572         struct mlx5_dev_config *config = &priv->config;
 573         unsigned int inlen;
 574         uint16_t nb_max;
 575
 576         inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
 577                 MLX5_SEND_DEF_INLINE_LEN :
 578                 (unsigned int)config->txq_inline_max;
 579         assert(config->txq_inline_min >= 0);
 580         inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
 581         inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
 582                                MLX5_ESEG_MIN_INLINE_SIZE -
 583                                MLX5_WQE_CSEG_SIZE -
 584                                MLX5_WQE_ESEG_SIZE -
 585                                MLX5_WQE_DSEG_SIZE * 2);
 586         nb_max = (MLX5_WQE_SIZE_MAX +
 587                   MLX5_ESEG_MIN_INLINE_SIZE -
 588                   MLX5_WQE_CSEG_SIZE -
 589                   MLX5_WQE_ESEG_SIZE -
 590                   MLX5_WQE_DSEG_SIZE -
 591                   inlen) / MLX5_WSEG_SIZE;
 592         info->tx_desc_lim.nb_seg_max = nb_max;
 593         info->tx_desc_lim.nb_mtu_seg_max = nb_max;
 594 }
 595
 596 /**
 597  * DPDK callback to get information about the device.
 598  *
 599  * @param dev
 600  *   Pointer to Ethernet device structure.
 601  * @param[out] info
 602  *   Info structure output buffer.
 603  */
 604 int
 605 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 606 {
 607         struct mlx5_priv *priv = dev->data->dev_private;
 608         struct mlx5_dev_config *config = &priv->config;
 609         unsigned int max;
 610
 611         /* FIXME: we should ask the device for these values. */
 612         info->min_rx_bufsize = 32;
 613         info->max_rx_pktlen = 65536;
 614         info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE;
 615         /*
 616          * Since we need one CQ per QP, the limit is the minimum number
 617          * between the two values.
 618          */
 619         max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq,
 620                       priv->sh->device_attr.orig_attr.max_qp);
 621         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 622         if (max >= 65535)
 623                 max = 65535;
 624         info->max_rx_queues = max;
 625         info->max_tx_queues = max;
 626         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 627         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 628         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 629                                  info->rx_queue_offload_capa);
 630         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 631         info->if_index = mlx5_ifindex(dev);
 632         info->reta_size = priv->reta_idx_n ?
 633                 priv->reta_idx_n : config->ind_table_max_size;
 634         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
 635         info->speed_capa = priv->link_speed_capa;
 636         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 637         mlx5_set_default_params(dev, info);
 638         mlx5_set_txlimit_params(dev, info);
 639         info->switch_info.name = dev->data->name;
 640         info->switch_info.domain_id = priv->domain_id;
 641         info->switch_info.port_id = priv->representor_id;
 642         if (priv->representor) {
 643                 uint16_t port_id;
 644
 645                 if (priv->pf_bond >= 0) {
 646                         /*
 647                          * Switch port ID is opaque value with driver defined
 648                          * format. Push the PF index in bonding configurations
 649                          * in upper four bits of port ID. If we get too many
 650                          * representors (more than 4K) or PFs (more than 15)
 651                          * this approach must be reconsidered.
 652                          */
 653                         if ((info->switch_info.port_id >>
 654                                 MLX5_PORT_ID_BONDING_PF_SHIFT) ||
 655                             priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
 656                                 DRV_LOG(ERR, "can't update switch port ID"
 657                                              " for bonding device");
 658                                 assert(false);
 659                                 return -ENODEV;
 660                         }
 661                         info->switch_info.port_id |=
 662                                 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
 663                 }
 664                 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 665                         struct mlx5_priv *opriv =
 666                                 rte_eth_devices[port_id].data->dev_private;
 667
 668                         if (!opriv ||
 669                             opriv->representor ||
 670                             opriv->sh != priv->sh ||
 671                             opriv->domain_id != priv->domain_id)
 672                                 continue;
 673                         /*
 674                          * Override switch name with that of the master
 675                          * device.
 676                          */
 677                         info->switch_info.name = opriv->dev_data->name;
 678                         break;
 679                 }
 680         }
 681         return 0;
 682 }
 683
 684 /**
 685  * Get device current raw clock counter
 686  *
 687  * @param dev
 688  *   Pointer to Ethernet device structure.
 689  * @param[out] time
 690  *   Current raw clock counter of the device.
 691  *
 692  * @return
 693  *   0 if the clock has correctly been read
 694  *   The value of errno in case of error
 695  */
 696 int
 697 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
 698 {
 699         struct mlx5_priv *priv = dev->data->dev_private;
 700         struct ibv_context *ctx = priv->sh->ctx;
 701         struct ibv_values_ex values;
 702         int err = 0;
 703
 704         values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
 705         err = mlx5_glue->query_rt_values_ex(ctx, &values);
 706         if (err != 0) {
 707                 DRV_LOG(WARNING, "Could not query the clock !");
 708                 return err;
 709         }
 710         *clock = values.raw_clock.tv_nsec;
 711         return 0;
 712 }
 713
 714 /**
 715  * Get firmware version of a device.
 716  *
 717  * @param dev
 718  *   Ethernet device port.
 719  * @param fw_ver
 720  *   String output allocated by caller.
 721  * @param fw_size
 722  *   Size of the output string, including terminating null byte.
 723  *
 724  * @return
 725  *   0 on success, or the size of the non truncated string if too big.
 726  */
 727 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 728 {
 729         struct mlx5_priv *priv = dev->data->dev_private;
 730         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
 731         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 732
 733         if (fw_size < size)
 734                 return size;
 735         if (fw_ver != NULL)
 736                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 737         return 0;
 738 }
 739
 740 /**
 741  * Get supported packet types.
 742  *
 743  * @param dev
 744  *   Pointer to Ethernet device structure.
 745  *
 746  * @return
 747  *   A pointer to the supported Packet types array.
 748  */
 749 const uint32_t *
 750 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 751 {
 752         static const uint32_t ptypes[] = {
 753                 /* refers to rxq_cq_to_pkt_type() */
 754                 RTE_PTYPE_L2_ETHER,
 755                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 756                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 757                 RTE_PTYPE_L4_NONFRAG,
 758                 RTE_PTYPE_L4_FRAG,
 759                 RTE_PTYPE_L4_TCP,
 760                 RTE_PTYPE_L4_UDP,
 761                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 762                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 763                 RTE_PTYPE_INNER_L4_NONFRAG,
 764                 RTE_PTYPE_INNER_L4_FRAG,
 765                 RTE_PTYPE_INNER_L4_TCP,
 766                 RTE_PTYPE_INNER_L4_UDP,
 767                 RTE_PTYPE_UNKNOWN
 768         };
 769
 770         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 771             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 772             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 773                 return ptypes;
 774         return NULL;
 775 }
 776
 777 /**
 778  * Retrieve the master device for representor in the same switch domain.
 779  *
 780  * @param dev
 781  *   Pointer to representor Ethernet device structure.
 782  *
 783  * @return
 784  *   Master device structure  on success, NULL otherwise.
 785  */
 786
 787 static struct rte_eth_dev *
 788 mlx5_find_master_dev(struct rte_eth_dev *dev)
 789 {
 790         struct mlx5_priv *priv;
 791         uint16_t port_id;
 792         uint16_t domain_id;
 793
 794         priv = dev->data->dev_private;
 795         domain_id = priv->domain_id;
 796         assert(priv->representor);
 797         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 798                 struct mlx5_priv *opriv =
 799                         rte_eth_devices[port_id].data->dev_private;
 800                 if (opriv &&
 801                     opriv->master &&
 802                     opriv->domain_id == domain_id &&
 803                     opriv->sh == priv->sh)
 804                         return &rte_eth_devices[port_id];
 805         }
 806         return NULL;
 807 }
 808
 809 /**
 810  * DPDK callback to retrieve physical link information.
 811  *
 812  * @param dev
 813  *   Pointer to Ethernet device structure.
 814  * @param[out] link
 815  *   Storage for current link status.
 816  *
 817  * @return
 818  *   0 on success, a negative errno value otherwise and rte_errno is set.
 819  */
 820 static int
 821 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 822                                struct rte_eth_link *link)
 823 {
 824         struct mlx5_priv *priv = dev->data->dev_private;
 825         struct ethtool_cmd edata = {
 826                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 827         };
 828         struct ifreq ifr;
 829         struct rte_eth_link dev_link;
 830         int link_speed = 0;
 831         int ret;
 832
 833         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 834         if (ret) {
 835                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 836                         dev->data->port_id, strerror(rte_errno));
 837                 return ret;
 838         }
 839         dev_link = (struct rte_eth_link) {
 840                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 841                                 (ifr.ifr_flags & IFF_RUNNING)),
 842         };
 843         ifr = (struct ifreq) {
 844                 .ifr_data = (void *)&edata,
 845         };
 846         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 847         if (ret) {
 848                 if (ret == -ENOTSUP && priv->representor) {
 849                         struct rte_eth_dev *master;
 850
 851                         /*
 852                          * For representors we can try to inherit link
 853                          * settings from the master device. Actually
 854                          * link settings do not make a lot of sense
 855                          * for representors due to missing physical
 856                          * link. The old kernel drivers supported
 857                          * emulated settings query for representors,
 858                          * the new ones do not, so we have to add
 859                          * this code for compatibility issues.
 860                          */
 861                         master = mlx5_find_master_dev(dev);
 862                         if (master) {
 863                                 ifr = (struct ifreq) {
 864                                         .ifr_data = (void *)&edata,
 865                                 };
 866                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 867                         }
 868                 }
 869                 if (ret) {
 870                         DRV_LOG(WARNING,
 871                                 "port %u ioctl(SIOCETHTOOL,"
 872                                 " ETHTOOL_GSET) failed: %s",
 873                                 dev->data->port_id, strerror(rte_errno));
 874                         return ret;
 875                 }
 876         }
 877         link_speed = ethtool_cmd_speed(&edata);
 878         if (link_speed == -1)
 879                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 880         else
 881                 dev_link.link_speed = link_speed;
 882         priv->link_speed_capa = 0;
 883         if (edata.supported & SUPPORTED_Autoneg)
 884                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 885         if (edata.supported & (SUPPORTED_1000baseT_Full |
 886                                SUPPORTED_1000baseKX_Full))
 887                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 888         if (edata.supported & SUPPORTED_10000baseKR_Full)
 889                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 890         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 891                                SUPPORTED_40000baseCR4_Full |
 892                                SUPPORTED_40000baseSR4_Full |
 893                                SUPPORTED_40000baseLR4_Full))
 894                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 895         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 896                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 897         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 898                         ETH_LINK_SPEED_FIXED);
 899         if (((dev_link.link_speed && !dev_link.link_status) ||
 900              (!dev_link.link_speed && dev_link.link_status))) {
 901                 rte_errno = EAGAIN;
 902                 return -rte_errno;
 903         }
 904         *link = dev_link;
 905         return 0;
 906 }
 907
 908 /**
 909  * Retrieve physical link information (unlocked version using new ioctl).
 910  *
 911  * @param dev
 912  *   Pointer to Ethernet device structure.
 913  * @param[out] link
 914  *   Storage for current link status.
 915  *
 916  * @return
 917  *   0 on success, a negative errno value otherwise and rte_errno is set.
 918  */
 919 static int
 920 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 921                              struct rte_eth_link *link)
 922
 923 {
 924         struct mlx5_priv *priv = dev->data->dev_private;
 925         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 926         struct ifreq ifr;
 927         struct rte_eth_link dev_link;
 928         struct rte_eth_dev *master = NULL;
 929         uint64_t sc;
 930         int ret;
 931
 932         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 933         if (ret) {
 934                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 935                         dev->data->port_id, strerror(rte_errno));
 936                 return ret;
 937         }
 938         dev_link = (struct rte_eth_link) {
 939                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 940                                 (ifr.ifr_flags & IFF_RUNNING)),
 941         };
 942         ifr = (struct ifreq) {
 943                 .ifr_data = (void *)&gcmd,
 944         };
 945         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 946         if (ret) {
 947                 if (ret == -ENOTSUP && priv->representor) {
 948                         /*
 949                          * For representors we can try to inherit link
 950                          * settings from the master device. Actually
 951                          * link settings do not make a lot of sense
 952                          * for representors due to missing physical
 953                          * link. The old kernel drivers supported
 954                          * emulated settings query for representors,
 955                          * the new ones do not, so we have to add
 956                          * this code for compatibility issues.
 957                          */
 958                         master = mlx5_find_master_dev(dev);
 959                         if (master) {
 960                                 ifr = (struct ifreq) {
 961                                         .ifr_data = (void *)&gcmd,
 962                                 };
 963                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 964                         }
 965                 }
 966                 if (ret) {
 967                         DRV_LOG(DEBUG,
 968                                 "port %u ioctl(SIOCETHTOOL,"
 969                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
 970                                 dev->data->port_id, strerror(rte_errno));
 971                         return ret;
 972                 }
 973
 974         }
 975         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 976
 977         alignas(struct ethtool_link_settings)
 978         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 979                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 980         struct ethtool_link_settings *ecmd = (void *)data;
 981
 982         *ecmd = gcmd;
 983         ifr.ifr_data = (void *)ecmd;
 984         ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
 985         if (ret) {
 986                 DRV_LOG(DEBUG,
 987                         "port %u ioctl(SIOCETHTOOL,"
 988                         "ETHTOOL_GLINKSETTINGS) failed: %s",
 989                         dev->data->port_id, strerror(rte_errno));
 990                 return ret;
 991         }
 992         dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE :
 993                                                             ecmd->speed;
 994         sc = ecmd->link_mode_masks[0] |
 995                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 996         priv->link_speed_capa = 0;
 997         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 998                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 999         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
1000                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
1001                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
1002         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
1003                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
1004                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
1005                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
1006         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
1007                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
1008                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
1009         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
1010                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
1011                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
1012                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
1013                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
1014         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
1015                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
1016                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
1017                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
1018                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
1019         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
1020                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
1021                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
1022                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
1023         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
1024                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
1025                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
1026         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
1027                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
1028                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
1029                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
1030                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
1031         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
1032                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
1033         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
1034                                   ETH_LINK_SPEED_FIXED);
1035         if (((dev_link.link_speed && !dev_link.link_status) ||
1036              (!dev_link.link_speed && dev_link.link_status))) {
1037                 rte_errno = EAGAIN;
1038                 return -rte_errno;
1039         }
1040         *link = dev_link;
1041         return 0;
1042 }
1043
1044 /**
1045  * DPDK callback to retrieve physical link information.
1046  *
1047  * @param dev
1048  *   Pointer to Ethernet device structure.
1049  * @param wait_to_complete
1050  *   Wait for request completion.
1051  *
1052  * @return
1053  *   0 if link status was not updated, positive if it was, a negative errno
1054  *   value otherwise and rte_errno is set.
1055  */
1056 int
1057 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1058 {
1059         int ret;
1060         struct rte_eth_link dev_link;
1061         time_t start_time = time(NULL);
1062         int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT;
1063
1064         do {
1065                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
1066                 if (ret == -ENOTSUP)
1067                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
1068                 if (ret == 0)
1069                         break;
1070                 /* Handle wait to complete situation. */
1071                 if ((wait_to_complete || retry) && ret == -EAGAIN) {
1072                         if (abs((int)difftime(time(NULL), start_time)) <
1073                             MLX5_LINK_STATUS_TIMEOUT) {
1074                                 usleep(0);
1075                                 continue;
1076                         } else {
1077                                 rte_errno = EBUSY;
1078                                 return -rte_errno;
1079                         }
1080                 } else if (ret < 0) {
1081                         return ret;
1082                 }
1083         } while (wait_to_complete || retry-- > 0);
1084         ret = !!memcmp(&dev->data->dev_link, &dev_link,
1085                        sizeof(struct rte_eth_link));
1086         dev->data->dev_link = dev_link;
1087         return ret;
1088 }
1089
1090 /**
1091  * DPDK callback to change the MTU.
1092  *
1093  * @param dev
1094  *   Pointer to Ethernet device structure.
1095  * @param in_mtu
1096  *   New MTU.
1097  *
1098  * @return
1099  *   0 on success, a negative errno value otherwise and rte_errno is set.
1100  */
1101 int
1102 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1103 {
1104         struct mlx5_priv *priv = dev->data->dev_private;
1105         uint16_t kern_mtu = 0;
1106         int ret;
1107
1108         ret = mlx5_get_mtu(dev, &kern_mtu);
1109         if (ret)
1110                 return ret;
1111         /* Set kernel interface MTU first. */
1112         ret = mlx5_set_mtu(dev, mtu);
1113         if (ret)
1114                 return ret;
1115         ret = mlx5_get_mtu(dev, &kern_mtu);
1116         if (ret)
1117                 return ret;
1118         if (kern_mtu == mtu) {
1119                 priv->mtu = mtu;
1120                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1121                         dev->data->port_id, mtu);
1122                 return 0;
1123         }
1124         rte_errno = EAGAIN;
1125         return -rte_errno;
1126 }
1127
1128 /**
1129  * DPDK callback to get flow control status.
1130  *
1131  * @param dev
1132  *   Pointer to Ethernet device structure.
1133  * @param[out] fc_conf
1134  *   Flow control output buffer.
1135  *
1136  * @return
1137  *   0 on success, a negative errno value otherwise and rte_errno is set.
1138  */
1139 int
1140 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1141 {
1142         struct ifreq ifr;
1143         struct ethtool_pauseparam ethpause = {
1144                 .cmd = ETHTOOL_GPAUSEPARAM
1145         };
1146         int ret;
1147
1148         ifr.ifr_data = (void *)&ethpause;
1149         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1150         if (ret) {
1151                 DRV_LOG(WARNING,
1152                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1153                         " %s",
1154                         dev->data->port_id, strerror(rte_errno));
1155                 return ret;
1156         }
1157         fc_conf->autoneg = ethpause.autoneg;
1158         if (ethpause.rx_pause && ethpause.tx_pause)
1159                 fc_conf->mode = RTE_FC_FULL;
1160         else if (ethpause.rx_pause)
1161                 fc_conf->mode = RTE_FC_RX_PAUSE;
1162         else if (ethpause.tx_pause)
1163                 fc_conf->mode = RTE_FC_TX_PAUSE;
1164         else
1165                 fc_conf->mode = RTE_FC_NONE;
1166         return 0;
1167 }
1168
1169 /**
1170  * DPDK callback to modify flow control parameters.
1171  *
1172  * @param dev
1173  *   Pointer to Ethernet device structure.
1174  * @param[in] fc_conf
1175  *   Flow control parameters.
1176  *
1177  * @return
1178  *   0 on success, a negative errno value otherwise and rte_errno is set.
1179  */
1180 int
1181 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1182 {
1183         struct ifreq ifr;
1184         struct ethtool_pauseparam ethpause = {
1185                 .cmd = ETHTOOL_SPAUSEPARAM
1186         };
1187         int ret;
1188
1189         ifr.ifr_data = (void *)&ethpause;
1190         ethpause.autoneg = fc_conf->autoneg;
1191         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1192             (fc_conf->mode & RTE_FC_RX_PAUSE))
1193                 ethpause.rx_pause = 1;
1194         else
1195                 ethpause.rx_pause = 0;
1196
1197         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1198             (fc_conf->mode & RTE_FC_TX_PAUSE))
1199                 ethpause.tx_pause = 1;
1200         else
1201                 ethpause.tx_pause = 0;
1202         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1203         if (ret) {
1204                 DRV_LOG(WARNING,
1205                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1206                         " failed: %s",
1207                         dev->data->port_id, strerror(rte_errno));
1208                 return ret;
1209         }
1210         return 0;
1211 }
1212
1213 /**
1214  * Get PCI information by sysfs device path.
1215  *
1216  * @param dev_path
1217  *   Pointer to device sysfs folder name.
1218  * @param[out] pci_addr
1219  *   PCI bus address output buffer.
1220  *
1221  * @return
1222  *   0 on success, a negative errno value otherwise and rte_errno is set.
1223  */
1224 int
1225 mlx5_dev_to_pci_addr(const char *dev_path,
1226                      struct rte_pci_addr *pci_addr)
1227 {
1228         FILE *file;
1229         char line[32];
1230         MKSTR(path, "%s/device/uevent", dev_path);
1231
1232         file = fopen(path, "rb");
1233         if (file == NULL) {
1234                 rte_errno = errno;
1235                 return -rte_errno;
1236         }
1237         while (fgets(line, sizeof(line), file) == line) {
1238                 size_t len = strlen(line);
1239                 int ret;
1240
1241                 /* Truncate long lines. */
1242                 if (len == (sizeof(line) - 1))
1243                         while (line[(len - 1)] != '\n') {
1244                                 ret = fgetc(file);
1245                                 if (ret == EOF)
1246                                         break;
1247                                 line[(len - 1)] = ret;
1248                         }
1249                 /* Extract information. */
1250                 if (sscanf(line,
1251                            "PCI_SLOT_NAME="
1252                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1253                            &pci_addr->domain,
1254                            &pci_addr->bus,
1255                            &pci_addr->devid,
1256                            &pci_addr->function) == 4) {
1257                         ret = 0;
1258                         break;
1259                 }
1260         }
1261         fclose(file);
1262         return 0;
1263 }
1264
1265 /**
1266  * Handle asynchronous removal event for entire multiport device.
1267  *
1268  * @param sh
1269  *   Infiniband device shared context.
1270  */
1271 static void
1272 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1273 {
1274         uint32_t i;
1275
1276         for (i = 0; i < sh->max_port; ++i) {
1277                 struct rte_eth_dev *dev;
1278
1279                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1280                         /*
1281                          * Or not existing port either no
1282                          * handler installed for this port.
1283                          */
1284                         continue;
1285                 }
1286                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1287                 assert(dev);
1288                 if (dev->data->dev_conf.intr_conf.rmv)
1289                         _rte_eth_dev_callback_process
1290                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1291         }
1292 }
1293
1294 /**
1295  * Handle shared asynchronous events the NIC (removal event
1296  * and link status change). Supports multiport IB device.
1297  *
1298  * @param cb_arg
1299  *   Callback argument.
1300  */
1301 void
1302 mlx5_dev_interrupt_handler(void *cb_arg)
1303 {
1304         struct mlx5_ibv_shared *sh = cb_arg;
1305         struct ibv_async_event event;
1306
1307         /* Read all message from the IB device and acknowledge them. */
1308         for (;;) {
1309                 struct rte_eth_dev *dev;
1310                 uint32_t tmp;
1311
1312                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1313                         break;
1314                 /* Retrieve and check IB port index. */
1315                 tmp = (uint32_t)event.element.port_num;
1316                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1317                         /*
1318                          * The DEVICE_FATAL event is called once for
1319                          * entire device without port specifying.
1320                          * We should notify all existing ports.
1321                          */
1322                         mlx5_glue->ack_async_event(&event);
1323                         mlx5_dev_interrupt_device_fatal(sh);
1324                         continue;
1325                 }
1326                 assert(tmp && (tmp <= sh->max_port));
1327                 if (!tmp) {
1328                         /* Unsupported devive level event. */
1329                         mlx5_glue->ack_async_event(&event);
1330                         DRV_LOG(DEBUG,
1331                                 "unsupported common event (type %d)",
1332                                 event.event_type);
1333                         continue;
1334                 }
1335                 if (tmp > sh->max_port) {
1336                         /* Invalid IB port index. */
1337                         mlx5_glue->ack_async_event(&event);
1338                         DRV_LOG(DEBUG,
1339                                 "cannot handle an event (type %d)"
1340                                 "due to invalid IB port index (%u)",
1341                                 event.event_type, tmp);
1342                         continue;
1343                 }
1344                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1345                         /* No handler installed. */
1346                         mlx5_glue->ack_async_event(&event);
1347                         DRV_LOG(DEBUG,
1348                                 "cannot handle an event (type %d)"
1349                                 "due to no handler installed for port %u",
1350                                 event.event_type, tmp);
1351                         continue;
1352                 }
1353                 /* Retrieve ethernet device descriptor. */
1354                 tmp = sh->port[tmp - 1].ih_port_id;
1355                 dev = &rte_eth_devices[tmp];
1356                 assert(dev);
1357                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1358                      event.event_type == IBV_EVENT_PORT_ERR) &&
1359                         dev->data->dev_conf.intr_conf.lsc) {
1360                         mlx5_glue->ack_async_event(&event);
1361                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1362                                 usleep(0);
1363                                 continue;
1364                         }
1365                         _rte_eth_dev_callback_process
1366                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1367                         continue;
1368                 }
1369                 DRV_LOG(DEBUG,
1370                         "port %u cannot handle an unknown event (type %d)",
1371                         dev->data->port_id, event.event_type);
1372                 mlx5_glue->ack_async_event(&event);
1373         }
1374 }
1375
1376 /*
1377  * Unregister callback handler safely. The handler may be active
1378  * while we are trying to unregister it, in this case code -EAGAIN
1379  * is returned by rte_intr_callback_unregister(). This routine checks
1380  * the return code and tries to unregister handler again.
1381  *
1382  * @param handle
1383  *   interrupt handle
1384  * @param cb_fn
1385  *   pointer to callback routine
1386  * @cb_arg
1387  *   opaque callback parameter
1388  */
1389 void
1390 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
1391                               rte_intr_callback_fn cb_fn, void *cb_arg)
1392 {
1393         /*
1394          * Try to reduce timeout management overhead by not calling
1395          * the timer related routines on the first iteration. If the
1396          * unregistering succeeds on first call there will be no
1397          * timer calls at all.
1398          */
1399         uint64_t twait = 0;
1400         uint64_t start = 0;
1401
1402         do {
1403                 int ret;
1404
1405                 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
1406                 if (ret >= 0)
1407                         return;
1408                 if (ret != -EAGAIN) {
1409                         DRV_LOG(INFO, "failed to unregister interrupt"
1410                                       " handler (error: %d)", ret);
1411                         assert(false);
1412                         return;
1413                 }
1414                 if (twait) {
1415                         struct timespec onems;
1416
1417                         /* Wait one millisecond and try again. */
1418                         onems.tv_sec = 0;
1419                         onems.tv_nsec = NS_PER_S / MS_PER_S;
1420                         nanosleep(&onems, 0);
1421                         /* Check whether one second elapsed. */
1422                         if ((rte_get_timer_cycles() - start) <= twait)
1423                                 continue;
1424                 } else {
1425                         /*
1426                          * We get the amount of timer ticks for one second.
1427                          * If this amount elapsed it means we spent one
1428                          * second in waiting. This branch is executed once
1429                          * on first iteration.
1430                          */
1431                         twait = rte_get_timer_hz();
1432                         assert(twait);
1433                 }
1434                 /*
1435                  * Timeout elapsed, show message (once a second) and retry.
1436                  * We have no other acceptable option here, if we ignore
1437                  * the unregistering return code the handler will not
1438                  * be unregistered, fd will be closed and we may get the
1439                  * crush. Hanging and messaging in the loop seems not to be
1440                  * the worst choice.
1441                  */
1442                 DRV_LOG(INFO, "Retrying to unregister interrupt handler");
1443                 start = rte_get_timer_cycles();
1444         } while (true);
1445 }
1446
1447 /**
1448  * Handle DEVX interrupts from the NIC.
1449  * This function is probably called from the DPDK host thread.
1450  *
1451  * @param cb_arg
1452  *   Callback argument.
1453  */
1454 void
1455 mlx5_dev_interrupt_handler_devx(void *cb_arg)
1456 {
1457 #ifndef HAVE_IBV_DEVX_ASYNC
1458         (void)cb_arg;
1459         return;
1460 #else
1461         struct mlx5_ibv_shared *sh = cb_arg;
1462         union {
1463                 struct mlx5dv_devx_async_cmd_hdr cmd_resp;
1464                 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
1465                             MLX5_ST_SZ_BYTES(traffic_counter) +
1466                             sizeof(struct mlx5dv_devx_async_cmd_hdr)];
1467         } out;
1468         uint8_t *buf = out.buf + sizeof(out.cmd_resp);
1469
1470         while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp,
1471                                                    &out.cmd_resp,
1472                                                    sizeof(out.buf)))
1473                 mlx5_flow_async_pool_query_handle
1474                         (sh, (uint64_t)out.cmd_resp.wr_id,
1475                          mlx5_devx_get_out_command_status(buf));
1476 #endif /* HAVE_IBV_DEVX_ASYNC */
1477 }
1478
1479 /**
1480  * Uninstall shared asynchronous device events handler.
1481  * This function is implemented to support event sharing
1482  * between multiple ports of single IB device.
1483  *
1484  * @param dev
1485  *   Pointer to Ethernet device.
1486  */
1487 static void
1488 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1489 {
1490         struct mlx5_priv *priv = dev->data->dev_private;
1491         struct mlx5_ibv_shared *sh = priv->sh;
1492
1493         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1494                 return;
1495         pthread_mutex_lock(&sh->intr_mutex);
1496         assert(priv->ibv_port);
1497         assert(priv->ibv_port <= sh->max_port);
1498         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1499         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1500                 goto exit;
1501         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1502                                         (uint32_t)dev->data->port_id);
1503         assert(sh->intr_cnt);
1504         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1505         if (!sh->intr_cnt || --sh->intr_cnt)
1506                 goto exit;
1507         mlx5_intr_callback_unregister(&sh->intr_handle,
1508                                      mlx5_dev_interrupt_handler, sh);
1509         sh->intr_handle.fd = 0;
1510         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1511 exit:
1512         pthread_mutex_unlock(&sh->intr_mutex);
1513 }
1514
1515 /**
1516  * Uninstall devx shared asynchronous device events handler.
1517  * This function is implemeted to support event sharing
1518  * between multiple ports of single IB device.
1519  *
1520  * @param dev
1521  *   Pointer to Ethernet device.
1522  */
1523 static void
1524 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev)
1525 {
1526         struct mlx5_priv *priv = dev->data->dev_private;
1527         struct mlx5_ibv_shared *sh = priv->sh;
1528
1529         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1530                 return;
1531         pthread_mutex_lock(&sh->intr_mutex);
1532         assert(priv->ibv_port);
1533         assert(priv->ibv_port <= sh->max_port);
1534         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1535         if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS)
1536                 goto exit;
1537         assert(sh->port[priv->ibv_port - 1].devx_ih_port_id ==
1538                                         (uint32_t)dev->data->port_id);
1539         sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS;
1540         if (!sh->devx_intr_cnt || --sh->devx_intr_cnt)
1541                 goto exit;
1542         if (sh->intr_handle_devx.fd) {
1543                 rte_intr_callback_unregister(&sh->intr_handle_devx,
1544                                              mlx5_dev_interrupt_handler_devx,
1545                                              sh);
1546                 sh->intr_handle_devx.fd = 0;
1547                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN;
1548         }
1549         if (sh->devx_comp) {
1550                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
1551                 sh->devx_comp = NULL;
1552         }
1553 exit:
1554         pthread_mutex_unlock(&sh->intr_mutex);
1555 }
1556
1557 /**
1558  * Install shared asynchronous device events handler.
1559  * This function is implemented to support event sharing
1560  * between multiple ports of single IB device.
1561  *
1562  * @param dev
1563  *   Pointer to Ethernet device.
1564  */
1565 static void
1566 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1567 {
1568         struct mlx5_priv *priv = dev->data->dev_private;
1569         struct mlx5_ibv_shared *sh = priv->sh;
1570         int ret;
1571         int flags;
1572
1573         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1574                 return;
1575         pthread_mutex_lock(&sh->intr_mutex);
1576         assert(priv->ibv_port);
1577         assert(priv->ibv_port <= sh->max_port);
1578         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1579         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1580                 /* The handler is already installed for this port. */
1581                 assert(sh->intr_cnt);
1582                 goto exit;
1583         }
1584         if (sh->intr_cnt) {
1585                 sh->port[priv->ibv_port - 1].ih_port_id =
1586                                                 (uint32_t)dev->data->port_id;
1587                 sh->intr_cnt++;
1588                 goto exit;
1589         }
1590         /* No shared handler installed. */
1591         assert(sh->ctx->async_fd > 0);
1592         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1593         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1594         if (ret) {
1595                 DRV_LOG(INFO, "failed to change file descriptor async event"
1596                         " queue");
1597                 /* Indicate there will be no interrupts. */
1598                 dev->data->dev_conf.intr_conf.lsc = 0;
1599                 dev->data->dev_conf.intr_conf.rmv = 0;
1600         } else {
1601                 sh->intr_handle.fd = sh->ctx->async_fd;
1602                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1603                 rte_intr_callback_register(&sh->intr_handle,
1604                                            mlx5_dev_interrupt_handler, sh);
1605                 sh->intr_cnt++;
1606                 sh->port[priv->ibv_port - 1].ih_port_id =
1607                                                 (uint32_t)dev->data->port_id;
1608         }
1609 exit:
1610         pthread_mutex_unlock(&sh->intr_mutex);
1611 }
1612
1613 /**
1614  * Install devx shared asyncronous device events handler.
1615  * This function is implemeted to support event sharing
1616  * between multiple ports of single IB device.
1617  *
1618  * @param dev
1619  *   Pointer to Ethernet device.
1620  */
1621 static void
1622 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev)
1623 {
1624         struct mlx5_priv *priv = dev->data->dev_private;
1625         struct mlx5_ibv_shared *sh = priv->sh;
1626
1627         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1628                 return;
1629         pthread_mutex_lock(&sh->intr_mutex);
1630         assert(priv->ibv_port);
1631         assert(priv->ibv_port <= sh->max_port);
1632         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1633         if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) {
1634                 /* The handler is already installed for this port. */
1635                 assert(sh->devx_intr_cnt);
1636                 goto exit;
1637         }
1638         if (sh->devx_intr_cnt) {
1639                 sh->devx_intr_cnt++;
1640                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1641                                         (uint32_t)dev->data->port_id;
1642                 goto exit;
1643         }
1644         if (priv->config.devx) {
1645 #ifndef HAVE_IBV_DEVX_ASYNC
1646                 goto exit;
1647 #else
1648                 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx);
1649                 if (sh->devx_comp) {
1650                         int flags = fcntl(sh->devx_comp->fd, F_GETFL);
1651                         int ret = fcntl(sh->devx_comp->fd, F_SETFL,
1652                                     flags | O_NONBLOCK);
1653
1654                         if (ret) {
1655                                 DRV_LOG(INFO, "failed to change file descriptor"
1656                                         " devx async event queue");
1657                         } else {
1658                                 sh->intr_handle_devx.fd = sh->devx_comp->fd;
1659                                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
1660                                 rte_intr_callback_register
1661                                         (&sh->intr_handle_devx,
1662                                          mlx5_dev_interrupt_handler_devx, sh);
1663                                 sh->devx_intr_cnt++;
1664                                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1665                                                 (uint32_t)dev->data->port_id;
1666                         }
1667                 }
1668 #endif /* HAVE_IBV_DEVX_ASYNC */
1669         }
1670 exit:
1671         pthread_mutex_unlock(&sh->intr_mutex);
1672 }
1673
1674 /**
1675  * Uninstall interrupt handler.
1676  *
1677  * @param dev
1678  *   Pointer to Ethernet device.
1679  */
1680 void
1681 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1682 {
1683         mlx5_dev_shared_handler_uninstall(dev);
1684 }
1685
1686 /**
1687  * Install interrupt handler.
1688  *
1689  * @param dev
1690  *   Pointer to Ethernet device.
1691  */
1692 void
1693 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1694 {
1695         mlx5_dev_shared_handler_install(dev);
1696 }
1697
1698 /**
1699  * Devx uninstall interrupt handler.
1700  *
1701  * @param dev
1702  *   Pointer to Ethernet device.
1703  */
1704 void
1705 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev)
1706 {
1707         mlx5_dev_shared_handler_devx_uninstall(dev);
1708 }
1709
1710 /**
1711  * Devx install interrupt handler.
1712  *
1713  * @param dev
1714  *   Pointer to Ethernet device.
1715  */
1716 void
1717 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev)
1718 {
1719         mlx5_dev_shared_handler_devx_install(dev);
1720 }
1721
1722 /**
1723  * DPDK callback to bring the link DOWN.
1724  *
1725  * @param dev
1726  *   Pointer to Ethernet device structure.
1727  *
1728  * @return
1729  *   0 on success, a negative errno value otherwise and rte_errno is set.
1730  */
1731 int
1732 mlx5_set_link_down(struct rte_eth_dev *dev)
1733 {
1734         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1735 }
1736
1737 /**
1738  * DPDK callback to bring the link UP.
1739  *
1740  * @param dev
1741  *   Pointer to Ethernet device structure.
1742  *
1743  * @return
1744  *   0 on success, a negative errno value otherwise and rte_errno is set.
1745  */
1746 int
1747 mlx5_set_link_up(struct rte_eth_dev *dev)
1748 {
1749         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1750 }
1751
1752 /**
1753  * Configure the RX function to use.
1754  *
1755  * @param dev
1756  *   Pointer to private data structure.
1757  *
1758  * @return
1759  *   Pointer to selected Rx burst function.
1760  */
1761 eth_rx_burst_t
1762 mlx5_select_rx_function(struct rte_eth_dev *dev)
1763 {
1764         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1765
1766         assert(dev != NULL);
1767         if (mlx5_check_vec_rx_support(dev) > 0) {
1768                 rx_pkt_burst = mlx5_rx_burst_vec;
1769                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1770                         dev->data->port_id);
1771         } else if (mlx5_mprq_enabled(dev)) {
1772                 rx_pkt_burst = mlx5_rx_burst_mprq;
1773         }
1774         return rx_pkt_burst;
1775 }
1776
1777 /**
1778  * Check if mlx5 device was removed.
1779  *
1780  * @param dev
1781  *   Pointer to Ethernet device structure.
1782  *
1783  * @return
1784  *   1 when device is removed, otherwise 0.
1785  */
1786 int
1787 mlx5_is_removed(struct rte_eth_dev *dev)
1788 {
1789         struct ibv_device_attr device_attr;
1790         struct mlx5_priv *priv = dev->data->dev_private;
1791
1792         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1793                 return 1;
1794         return 0;
1795 }
1796
1797 /**
1798  * Get the E-Switch parameters by port id.
1799  *
1800  * @param[in] port
1801  *   Device port id.
1802  * @param[in] valid
1803  *   Device port id is valid, skip check. This flag is useful
1804  *   when trials are performed from probing and device is not
1805  *   flagged as valid yet (in attaching process).
1806  * @param[out] es_domain_id
1807  *   E-Switch domain id.
1808  * @param[out] es_port_id
1809  *   The port id of the port in the E-Switch.
1810  *
1811  * @return
1812  *   pointer to device private data structure containing data needed
1813  *   on success, NULL otherwise and rte_errno is set.
1814  */
1815 struct mlx5_priv *
1816 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
1817 {
1818         struct rte_eth_dev *dev;
1819         struct mlx5_priv *priv;
1820
1821         if (port >= RTE_MAX_ETHPORTS) {
1822                 rte_errno = EINVAL;
1823                 return NULL;
1824         }
1825         if (!valid && !rte_eth_dev_is_valid_port(port)) {
1826                 rte_errno = ENODEV;
1827                 return NULL;
1828         }
1829         dev = &rte_eth_devices[port];
1830         priv = dev->data->dev_private;
1831         if (!(priv->representor || priv->master)) {
1832                 rte_errno = EINVAL;
1833                 return NULL;
1834         }
1835         return priv;
1836 }
1837
1838 /**
1839  * Get the E-Switch parameters by device instance.
1840  *
1841  * @param[in] port
1842  *   Device port id.
1843  * @param[out] es_domain_id
1844  *   E-Switch domain id.
1845  * @param[out] es_port_id
1846  *   The port id of the port in the E-Switch.
1847  *
1848  * @return
1849  *   pointer to device private data structure containing data needed
1850  *   on success, NULL otherwise and rte_errno is set.
1851  */
1852 struct mlx5_priv *
1853 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
1854 {
1855         struct mlx5_priv *priv;
1856
1857         priv = dev->data->dev_private;
1858         if (!(priv->representor || priv->master)) {
1859                 rte_errno = EINVAL;
1860                 return NULL;
1861         }
1862         return priv;
1863 }
1864
1865 /**
1866  * Get switch information associated with network interface.
1867  *
1868  * @param ifindex
1869  *   Network interface index.
1870  * @param[out] info
1871  *   Switch information object, populated in case of success.
1872  *
1873  * @return
1874  *   0 on success, a negative errno value otherwise and rte_errno is set.
1875  */
1876 int
1877 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1878 {
1879         char ifname[IF_NAMESIZE];
1880         char port_name[IF_NAMESIZE];
1881         FILE *file;
1882         struct mlx5_switch_info data = {
1883                 .master = 0,
1884                 .representor = 0,
1885                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1886                 .port_name = 0,
1887                 .switch_id = 0,
1888         };
1889         DIR *dir;
1890         bool port_switch_id_set = false;
1891         bool device_dir = false;
1892         char c;
1893         int ret;
1894
1895         if (!if_indextoname(ifindex, ifname)) {
1896                 rte_errno = errno;
1897                 return -rte_errno;
1898         }
1899
1900         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1901               ifname);
1902         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1903               ifname);
1904         MKSTR(pci_device, "/sys/class/net/%s/device",
1905               ifname);
1906
1907         file = fopen(phys_port_name, "rb");
1908         if (file != NULL) {
1909                 ret = fscanf(file, "%s", port_name);
1910                 fclose(file);
1911                 if (ret == 1)
1912                         mlx5_translate_port_name(port_name, &data);
1913         }
1914         file = fopen(phys_switch_id, "rb");
1915         if (file == NULL) {
1916                 rte_errno = errno;
1917                 return -rte_errno;
1918         }
1919         port_switch_id_set =
1920                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1921                 c == '\n';
1922         fclose(file);
1923         dir = opendir(pci_device);
1924         if (dir != NULL) {
1925                 closedir(dir);
1926                 device_dir = true;
1927         }
1928         if (port_switch_id_set) {
1929                 /* We have some E-Switch configuration. */
1930                 mlx5_sysfs_check_switch_info(device_dir, &data);
1931         }
1932         *info = data;
1933         assert(!(data.master && data.representor));
1934         if (data.master && data.representor) {
1935                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1936                              " and as representor", ifindex);
1937                 rte_errno = ENODEV;
1938                 return -rte_errno;
1939         }
1940         return 0;
1941 }
1942
1943 /**
1944  * Analyze gathered port parameters via Netlink to recognize master
1945  * and representor devices for E-Switch configuration.
1946  *
1947  * @param[in] num_vf_set
1948  *   flag of presence of number of VFs port attribute.
1949  * @param[inout] switch_info
1950  *   Port information, including port name as a number and port name
1951  *   type if recognized
1952  *
1953  * @return
1954  *   master and representor flags are set in switch_info according to
1955  *   recognized parameters (if any).
1956  */
1957 void
1958 mlx5_nl_check_switch_info(bool num_vf_set,
1959                           struct mlx5_switch_info *switch_info)
1960 {
1961         switch (switch_info->name_type) {
1962         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1963                 /*
1964                  * Name is not recognized, assume the master,
1965                  * check the number of VFs key presence.
1966                  */
1967                 switch_info->master = num_vf_set;
1968                 break;
1969         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1970                 /*
1971                  * Name is not set, this assumes the legacy naming
1972                  * schema for master, just check if there is a
1973                  * number of VFs key.
1974                  */
1975                 switch_info->master = num_vf_set;
1976                 break;
1977         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1978                 /* New uplink naming schema recognized. */
1979                 switch_info->master = 1;
1980                 break;
1981         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1982                 /* Legacy representors naming schema. */
1983                 switch_info->representor = !num_vf_set;
1984                 break;
1985         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1986                 /* New representors naming schema. */
1987                 switch_info->representor = 1;
1988                 break;
1989         }
1990 }
1991
1992 /**
1993  * Analyze gathered port parameters via sysfs to recognize master
1994  * and representor devices for E-Switch configuration.
1995  *
1996  * @param[in] device_dir
1997  *   flag of presence of "device" directory under port device key.
1998  * @param[inout] switch_info
1999  *   Port information, including port name as a number and port name
2000  *   type if recognized
2001  *
2002  * @return
2003  *   master and representor flags are set in switch_info according to
2004  *   recognized parameters (if any).
2005  */
2006 void
2007 mlx5_sysfs_check_switch_info(bool device_dir,
2008                              struct mlx5_switch_info *switch_info)
2009 {
2010         switch (switch_info->name_type) {
2011         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
2012                 /*
2013                  * Name is not recognized, assume the master,
2014                  * check the device directory presence.
2015                  */
2016                 switch_info->master = device_dir;
2017                 break;
2018         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
2019                 /*
2020                  * Name is not set, this assumes the legacy naming
2021                  * schema for master, just check if there is
2022                  * a device directory.
2023                  */
2024                 switch_info->master = device_dir;
2025                 break;
2026         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
2027                 /* New uplink naming schema recognized. */
2028                 switch_info->master = 1;
2029                 break;
2030         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
2031                 /* Legacy representors naming schema. */
2032                 switch_info->representor = !device_dir;
2033                 break;
2034         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
2035                 /* New representors naming schema. */
2036                 switch_info->representor = 1;
2037                 break;
2038         }
2039 }
2040
2041 /**
2042  * Extract port name, as a number, from sysfs or netlink information.
2043  *
2044  * @param[in] port_name_in
2045  *   String representing the port name.
2046  * @param[out] port_info_out
2047  *   Port information, including port name as a number and port name
2048  *   type if recognized
2049  *
2050  * @return
2051  *   port_name field set according to recognized name format.
2052  */
2053 void
2054 mlx5_translate_port_name(const char *port_name_in,
2055                          struct mlx5_switch_info *port_info_out)
2056 {
2057         char pf_c1, pf_c2, vf_c1, vf_c2;
2058         char *end;
2059         int sc_items;
2060
2061         /*
2062          * Check for port-name as a string of the form pf0vf0
2063          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
2064          */
2065         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
2066                           &pf_c1, &pf_c2, &port_info_out->pf_num,
2067                           &vf_c1, &vf_c2, &port_info_out->port_name);
2068         if (sc_items == 6 &&
2069             pf_c1 == 'p' && pf_c2 == 'f' &&
2070             vf_c1 == 'v' && vf_c2 == 'f') {
2071                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
2072                 return;
2073         }
2074         /*
2075          * Check for port-name as a string of the form p0
2076          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
2077          */
2078         sc_items = sscanf(port_name_in, "%c%d",
2079                           &pf_c1, &port_info_out->port_name);
2080         if (sc_items == 2 && pf_c1 == 'p') {
2081                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
2082                 return;
2083         }
2084         /* Check for port-name as a number (support kernel ver < 5.0 */
2085         errno = 0;
2086         port_info_out->port_name = strtol(port_name_in, &end, 0);
2087         if (!errno &&
2088             (size_t)(end - port_name_in) == strlen(port_name_in)) {
2089                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
2090                 return;
2091         }
2092         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
2093         return;
2094 }
2095
2096 /**
2097  * DPDK callback to retrieve plug-in module EEPROM information (type and size).
2098  *
2099  * @param dev
2100  *   Pointer to Ethernet device structure.
2101  * @param[out] modinfo
2102  *   Storage for plug-in module EEPROM information.
2103  *
2104  * @return
2105  *   0 on success, a negative errno value otherwise and rte_errno is set.
2106  */
2107 int
2108 mlx5_get_module_info(struct rte_eth_dev *dev,
2109                      struct rte_eth_dev_module_info *modinfo)
2110 {
2111         struct ethtool_modinfo info = {
2112                 .cmd = ETHTOOL_GMODULEINFO,
2113         };
2114         struct ifreq ifr = (struct ifreq) {
2115                 .ifr_data = (void *)&info,
2116         };
2117         int ret = 0;
2118
2119         if (!dev || !modinfo) {
2120                 DRV_LOG(WARNING, "missing argument, cannot get module info");
2121                 rte_errno = EINVAL;
2122                 return -rte_errno;
2123         }
2124         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2125         if (ret) {
2126                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2127                         dev->data->port_id, strerror(rte_errno));
2128                 return ret;
2129         }
2130         modinfo->type = info.type;
2131         modinfo->eeprom_len = info.eeprom_len;
2132         return ret;
2133 }
2134
2135 /**
2136  * DPDK callback to retrieve plug-in module EEPROM data.
2137  *
2138  * @param dev
2139  *   Pointer to Ethernet device structure.
2140  * @param[out] info
2141  *   Storage for plug-in module EEPROM data.
2142  *
2143  * @return
2144  *   0 on success, a negative errno value otherwise and rte_errno is set.
2145  */
2146 int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
2147                            struct rte_dev_eeprom_info *info)
2148 {
2149         struct ethtool_eeprom *eeprom;
2150         struct ifreq ifr;
2151         int ret = 0;
2152
2153         if (!dev || !info) {
2154                 DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
2155                 rte_errno = EINVAL;
2156                 return -rte_errno;
2157         }
2158         eeprom = rte_calloc(__func__, 1,
2159                             (sizeof(struct ethtool_eeprom) + info->length), 0);
2160         if (!eeprom) {
2161                 DRV_LOG(WARNING, "port %u cannot allocate memory for "
2162                         "eeprom data", dev->data->port_id);
2163                 rte_errno = ENOMEM;
2164                 return -rte_errno;
2165         }
2166         eeprom->cmd = ETHTOOL_GMODULEEEPROM;
2167         eeprom->offset = info->offset;
2168         eeprom->len = info->length;
2169         ifr = (struct ifreq) {
2170                 .ifr_data = (void *)eeprom,
2171         };
2172         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2173         if (ret)
2174                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2175                         dev->data->port_id, strerror(rte_errno));
2176         else
2177                 rte_memcpy(info->data, eeprom->data, info->length);
2178         rte_free(eeprom);
2179         return ret;
2180 }
2181
2182 /**
2183  * DPDK callback to retrieve hairpin capabilities.
2184  *
2185  * @param dev
2186  *   Pointer to Ethernet device structure.
2187  * @param[out] cap
2188  *   Storage for hairpin capability data.
2189  *
2190  * @return
2191  *   0 on success, a negative errno value otherwise and rte_errno is set.
2192  */
2193 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
2194                          struct rte_eth_hairpin_cap *cap)
2195 {
2196         struct mlx5_priv *priv = dev->data->dev_private;
2197
2198         if (priv->sh->devx == 0) {
2199                 rte_errno = ENOTSUP;
2200                 return -rte_errno;
2201         }
2202         cap->max_nb_queues = UINT16_MAX;
2203         cap->max_rx_2_tx = 1;
2204         cap->max_tx_2_rx = 1;
2205         cap->max_nb_desc = 8192;
2206         return 0;
2207 }