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_rxtx.h"
  42 #include "mlx5_utils.h"
  43
  44 /* Supported speed values found in /usr/include/linux/ethtool.h */
  45 #ifndef HAVE_SUPPORTED_40000baseKR4_Full
  46 #define SUPPORTED_40000baseKR4_Full (1 << 23)
  47 #endif
  48 #ifndef HAVE_SUPPORTED_40000baseCR4_Full
  49 #define SUPPORTED_40000baseCR4_Full (1 << 24)
  50 #endif
  51 #ifndef HAVE_SUPPORTED_40000baseSR4_Full
  52 #define SUPPORTED_40000baseSR4_Full (1 << 25)
  53 #endif
  54 #ifndef HAVE_SUPPORTED_40000baseLR4_Full
  55 #define SUPPORTED_40000baseLR4_Full (1 << 26)
  56 #endif
  57 #ifndef HAVE_SUPPORTED_56000baseKR4_Full
  58 #define SUPPORTED_56000baseKR4_Full (1 << 27)
  59 #endif
  60 #ifndef HAVE_SUPPORTED_56000baseCR4_Full
  61 #define SUPPORTED_56000baseCR4_Full (1 << 28)
  62 #endif
  63 #ifndef HAVE_SUPPORTED_56000baseSR4_Full
  64 #define SUPPORTED_56000baseSR4_Full (1 << 29)
  65 #endif
  66 #ifndef HAVE_SUPPORTED_56000baseLR4_Full
  67 #define SUPPORTED_56000baseLR4_Full (1 << 30)
  68 #endif
  69
  70 /* Add defines in case the running kernel is not the same as user headers. */
  71 #ifndef ETHTOOL_GLINKSETTINGS
  72 struct ethtool_link_settings {
  73         uint32_t cmd;
  74         uint32_t speed;
  75         uint8_t duplex;
  76         uint8_t port;
  77         uint8_t phy_address;
  78         uint8_t autoneg;
  79         uint8_t mdio_support;
  80         uint8_t eth_to_mdix;
  81         uint8_t eth_tp_mdix_ctrl;
  82         int8_t link_mode_masks_nwords;
  83         uint32_t reserved[8];
  84         uint32_t link_mode_masks[];
  85 };
  86
  87 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  88 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  89 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  90 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  91 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  92 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  93 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  94 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  95 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  96 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  97 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  98 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  99 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
 100 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
 101 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 102 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 103 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 104 #endif
 105 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 106 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 107 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 108 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 109 #endif
 110 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 111 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 112 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 113 #endif
 114 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 115 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 116 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 117 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 118 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 119 #endif
 120
 121 /**
 122  * Get master interface name from private structure.
 123  *
 124  * @param[in] dev
 125  *   Pointer to Ethernet device.
 126  * @param[out] ifname
 127  *   Interface name output buffer.
 128  *
 129  * @return
 130  *   0 on success, a negative errno value otherwise and rte_errno is set.
 131  */
 132 int
 133 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE])
 134 {
 135         DIR *dir;
 136         struct dirent *dent;
 137         unsigned int dev_type = 0;
 138         unsigned int dev_port_prev = ~0u;
 139         char match[IF_NAMESIZE] = "";
 140
 141         assert(ibdev_path);
 142         {
 143                 MKSTR(path, "%s/device/net", ibdev_path);
 144
 145                 dir = opendir(path);
 146                 if (dir == NULL) {
 147                         rte_errno = errno;
 148                         return -rte_errno;
 149                 }
 150         }
 151         while ((dent = readdir(dir)) != NULL) {
 152                 char *name = dent->d_name;
 153                 FILE *file;
 154                 unsigned int dev_port;
 155                 int r;
 156
 157                 if ((name[0] == '.') &&
 158                     ((name[1] == '\0') ||
 159                      ((name[1] == '.') && (name[2] == '\0'))))
 160                         continue;
 161
 162                 MKSTR(path, "%s/device/net/%s/%s",
 163                       ibdev_path, name,
 164                       (dev_type ? "dev_id" : "dev_port"));
 165
 166                 file = fopen(path, "rb");
 167                 if (file == NULL) {
 168                         if (errno != ENOENT)
 169                                 continue;
 170                         /*
 171                          * Switch to dev_id when dev_port does not exist as
 172                          * is the case with Linux kernel versions < 3.15.
 173                          */
 174 try_dev_id:
 175                         match[0] = '\0';
 176                         if (dev_type)
 177                                 break;
 178                         dev_type = 1;
 179                         dev_port_prev = ~0u;
 180                         rewinddir(dir);
 181                         continue;
 182                 }
 183                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 184                 fclose(file);
 185                 if (r != 1)
 186                         continue;
 187                 /*
 188                  * Switch to dev_id when dev_port returns the same value for
 189                  * all ports. May happen when using a MOFED release older than
 190                  * 3.0 with a Linux kernel >= 3.15.
 191                  */
 192                 if (dev_port == dev_port_prev)
 193                         goto try_dev_id;
 194                 dev_port_prev = dev_port;
 195                 if (dev_port == 0)
 196                         strlcpy(match, name, sizeof(match));
 197         }
 198         closedir(dir);
 199         if (match[0] == '\0') {
 200                 rte_errno = ENOENT;
 201                 return -rte_errno;
 202         }
 203         strncpy(*ifname, match, sizeof(*ifname));
 204         return 0;
 205 }
 206
 207 /**
 208  * Get interface name from private structure.
 209  *
 210  * This is a port representor-aware version of mlx5_get_master_ifname().
 211  *
 212  * @param[in] dev
 213  *   Pointer to Ethernet device.
 214  * @param[out] ifname
 215  *   Interface name output buffer.
 216  *
 217  * @return
 218  *   0 on success, a negative errno value otherwise and rte_errno is set.
 219  */
 220 int
 221 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE])
 222 {
 223         struct mlx5_priv *priv = dev->data->dev_private;
 224         unsigned int ifindex;
 225
 226         assert(priv);
 227         assert(priv->sh);
 228         ifindex = mlx5_ifindex(dev);
 229         if (!ifindex) {
 230                 if (!priv->representor)
 231                         return mlx5_get_master_ifname(priv->sh->ibdev_path,
 232                                                       ifname);
 233                 rte_errno = ENXIO;
 234                 return -rte_errno;
 235         }
 236         if (if_indextoname(ifindex, &(*ifname)[0]))
 237                 return 0;
 238         rte_errno = errno;
 239         return -rte_errno;
 240 }
 241
 242 /**
 243  * Get the interface index from device name.
 244  *
 245  * @param[in] dev
 246  *   Pointer to Ethernet device.
 247  *
 248  * @return
 249  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
 250  */
 251 unsigned int
 252 mlx5_ifindex(const struct rte_eth_dev *dev)
 253 {
 254         struct mlx5_priv *priv = dev->data->dev_private;
 255         unsigned int ifindex;
 256
 257         assert(priv);
 258         assert(priv->if_index);
 259         ifindex = priv->if_index;
 260         if (!ifindex)
 261                 rte_errno = ENXIO;
 262         return ifindex;
 263 }
 264
 265 /**
 266  * Perform ifreq ioctl() on associated Ethernet device.
 267  *
 268  * @param[in] dev
 269  *   Pointer to Ethernet device.
 270  * @param req
 271  *   Request number to pass to ioctl().
 272  * @param[out] ifr
 273  *   Interface request structure output buffer.
 274  *
 275  * @return
 276  *   0 on success, a negative errno value otherwise and rte_errno is set.
 277  */
 278 int
 279 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 280 {
 281         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 282         int ret = 0;
 283
 284         if (sock == -1) {
 285                 rte_errno = errno;
 286                 return -rte_errno;
 287         }
 288         ret = mlx5_get_ifname(dev, &ifr->ifr_name);
 289         if (ret)
 290                 goto error;
 291         ret = ioctl(sock, req, ifr);
 292         if (ret == -1) {
 293                 rte_errno = errno;
 294                 goto error;
 295         }
 296         close(sock);
 297         return 0;
 298 error:
 299         close(sock);
 300         return -rte_errno;
 301 }
 302
 303 /**
 304  * Get device MTU.
 305  *
 306  * @param dev
 307  *   Pointer to Ethernet device.
 308  * @param[out] mtu
 309  *   MTU value output buffer.
 310  *
 311  * @return
 312  *   0 on success, a negative errno value otherwise and rte_errno is set.
 313  */
 314 int
 315 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
 316 {
 317         struct ifreq request;
 318         int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
 319
 320         if (ret)
 321                 return ret;
 322         *mtu = request.ifr_mtu;
 323         return 0;
 324 }
 325
 326 /**
 327  * Set device MTU.
 328  *
 329  * @param dev
 330  *   Pointer to Ethernet device.
 331  * @param mtu
 332  *   MTU value to set.
 333  *
 334  * @return
 335  *   0 on success, a negative errno value otherwise and rte_errno is set.
 336  */
 337 static int
 338 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 339 {
 340         struct ifreq request = { .ifr_mtu = mtu, };
 341
 342         return mlx5_ifreq(dev, SIOCSIFMTU, &request);
 343 }
 344
 345 /**
 346  * Set device flags.
 347  *
 348  * @param dev
 349  *   Pointer to Ethernet device.
 350  * @param keep
 351  *   Bitmask for flags that must remain untouched.
 352  * @param flags
 353  *   Bitmask for flags to modify.
 354  *
 355  * @return
 356  *   0 on success, a negative errno value otherwise and rte_errno is set.
 357  */
 358 int
 359 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags)
 360 {
 361         struct ifreq request;
 362         int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request);
 363
 364         if (ret)
 365                 return ret;
 366         request.ifr_flags &= keep;
 367         request.ifr_flags |= flags & ~keep;
 368         return mlx5_ifreq(dev, SIOCSIFFLAGS, &request);
 369 }
 370
 371 /**
 372  * DPDK callback for Ethernet device configuration.
 373  *
 374  * @param dev
 375  *   Pointer to Ethernet device structure.
 376  *
 377  * @return
 378  *   0 on success, a negative errno value otherwise and rte_errno is set.
 379  */
 380 int
 381 mlx5_dev_configure(struct rte_eth_dev *dev)
 382 {
 383         struct mlx5_priv *priv = dev->data->dev_private;
 384         unsigned int rxqs_n = dev->data->nb_rx_queues;
 385         unsigned int txqs_n = dev->data->nb_tx_queues;
 386         const uint8_t use_app_rss_key =
 387                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 388         int ret = 0;
 389
 390         if (use_app_rss_key &&
 391             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 392              MLX5_RSS_HASH_KEY_LEN)) {
 393                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
 394                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
 395                 rte_errno = EINVAL;
 396                 return -rte_errno;
 397         }
 398         priv->rss_conf.rss_key =
 399                 rte_realloc(priv->rss_conf.rss_key,
 400                             MLX5_RSS_HASH_KEY_LEN, 0);
 401         if (!priv->rss_conf.rss_key) {
 402                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
 403                         dev->data->port_id, rxqs_n);
 404                 rte_errno = ENOMEM;
 405                 return -rte_errno;
 406         }
 407
 408         dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH;
 409
 410         memcpy(priv->rss_conf.rss_key,
 411                use_app_rss_key ?
 412                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 413                rss_hash_default_key,
 414                MLX5_RSS_HASH_KEY_LEN);
 415         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 416         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 417         priv->rxqs = (void *)dev->data->rx_queues;
 418         priv->txqs = (void *)dev->data->tx_queues;
 419         if (txqs_n != priv->txqs_n) {
 420                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 421                         dev->data->port_id, priv->txqs_n, txqs_n);
 422                 priv->txqs_n = txqs_n;
 423         }
 424         if (rxqs_n > priv->config.ind_table_max_size) {
 425                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 426                         dev->data->port_id, rxqs_n);
 427                 rte_errno = EINVAL;
 428                 return -rte_errno;
 429         }
 430         if (rxqs_n != priv->rxqs_n) {
 431                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 432                         dev->data->port_id, priv->rxqs_n, rxqs_n);
 433                 priv->rxqs_n = rxqs_n;
 434         }
 435         priv->skip_default_rss_reta = 0;
 436         ret = mlx5_proc_priv_init(dev);
 437         if (ret)
 438                 return ret;
 439         return 0;
 440 }
 441
 442 /**
 443  * Configure default RSS reta.
 444  *
 445  * @param dev
 446  *   Pointer to Ethernet device structure.
 447  *
 448  * @return
 449  *   0 on success, a negative errno value otherwise and rte_errno is set.
 450  */
 451 int
 452 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
 453 {
 454         struct mlx5_priv *priv = dev->data->dev_private;
 455         unsigned int rxqs_n = dev->data->nb_rx_queues;
 456         unsigned int i;
 457         unsigned int j;
 458         unsigned int reta_idx_n;
 459         int ret = 0;
 460         unsigned int *rss_queue_arr = NULL;
 461         unsigned int rss_queue_n = 0;
 462
 463         if (priv->skip_default_rss_reta)
 464                 return ret;
 465         rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0);
 466         if (!rss_queue_arr) {
 467                 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
 468                         dev->data->port_id, rxqs_n);
 469                 rte_errno = ENOMEM;
 470                 return -rte_errno;
 471         }
 472         for (i = 0, j = 0; i < rxqs_n; i++) {
 473                 struct mlx5_rxq_data *rxq_data;
 474                 struct mlx5_rxq_ctrl *rxq_ctrl;
 475
 476                 rxq_data = (*priv->rxqs)[i];
 477                 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
 478                 if (rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
 479                         rss_queue_arr[j++] = i;
 480         }
 481         rss_queue_n = j;
 482         if (rss_queue_n > priv->config.ind_table_max_size) {
 483                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 484                         dev->data->port_id, rss_queue_n);
 485                 rte_errno = EINVAL;
 486                 rte_free(rss_queue_arr);
 487                 return -rte_errno;
 488         }
 489         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 490                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 491         priv->rxqs_n = rxqs_n;
 492         /*
 493          * If the requested number of RX queues is not a power of two,
 494          * use the maximum indirection table size for better balancing.
 495          * The result is always rounded to the next power of two.
 496          */
 497         reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
 498                                 priv->config.ind_table_max_size :
 499                                 rss_queue_n));
 500         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 501         if (ret) {
 502                 rte_free(rss_queue_arr);
 503                 return ret;
 504         }
 505         /*
 506          * When the number of RX queues is not a power of two,
 507          * the remaining table entries are padded with reused WQs
 508          * and hashes are not spread uniformly.
 509          */
 510         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 511                 (*priv->reta_idx)[i] = rss_queue_arr[j];
 512                 if (++j == rss_queue_n)
 513                         j = 0;
 514         }
 515         rte_free(rss_queue_arr);
 516         return ret;
 517 }
 518
 519 /**
 520  * Sets default tuning parameters.
 521  *
 522  * @param dev
 523  *   Pointer to Ethernet device.
 524  * @param[out] info
 525  *   Info structure output buffer.
 526  */
 527 static void
 528 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 529 {
 530         struct mlx5_priv *priv = dev->data->dev_private;
 531
 532         /* Minimum CPU utilization. */
 533         info->default_rxportconf.ring_size = 256;
 534         info->default_txportconf.ring_size = 256;
 535         info->default_rxportconf.burst_size = 64;
 536         info->default_txportconf.burst_size = 64;
 537         if (priv->link_speed_capa & ETH_LINK_SPEED_100G) {
 538                 info->default_rxportconf.nb_queues = 16;
 539                 info->default_txportconf.nb_queues = 16;
 540                 if (dev->data->nb_rx_queues > 2 ||
 541                     dev->data->nb_tx_queues > 2) {
 542                         /* Max Throughput. */
 543                         info->default_rxportconf.ring_size = 2048;
 544                         info->default_txportconf.ring_size = 2048;
 545                 }
 546         } else {
 547                 info->default_rxportconf.nb_queues = 8;
 548                 info->default_txportconf.nb_queues = 8;
 549                 if (dev->data->nb_rx_queues > 2 ||
 550                     dev->data->nb_tx_queues > 2) {
 551                         /* Max Throughput. */
 552                         info->default_rxportconf.ring_size = 4096;
 553                         info->default_txportconf.ring_size = 4096;
 554                 }
 555         }
 556 }
 557
 558 /**
 559  * Sets tx mbuf limiting parameters.
 560  *
 561  * @param dev
 562  *   Pointer to Ethernet device.
 563  * @param[out] info
 564  *   Info structure output buffer.
 565  */
 566 static void
 567 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 568 {
 569         struct mlx5_priv *priv = dev->data->dev_private;
 570         struct mlx5_dev_config *config = &priv->config;
 571         unsigned int inlen;
 572         uint16_t nb_max;
 573
 574         inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
 575                 MLX5_SEND_DEF_INLINE_LEN :
 576                 (unsigned int)config->txq_inline_max;
 577         assert(config->txq_inline_min >= 0);
 578         inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
 579         inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
 580                                MLX5_ESEG_MIN_INLINE_SIZE -
 581                                MLX5_WQE_CSEG_SIZE -
 582                                MLX5_WQE_ESEG_SIZE -
 583                                MLX5_WQE_DSEG_SIZE * 2);
 584         nb_max = (MLX5_WQE_SIZE_MAX +
 585                   MLX5_ESEG_MIN_INLINE_SIZE -
 586                   MLX5_WQE_CSEG_SIZE -
 587                   MLX5_WQE_ESEG_SIZE -
 588                   MLX5_WQE_DSEG_SIZE -
 589                   inlen) / MLX5_WSEG_SIZE;
 590         info->tx_desc_lim.nb_seg_max = nb_max;
 591         info->tx_desc_lim.nb_mtu_seg_max = nb_max;
 592 }
 593
 594 /**
 595  * DPDK callback to get information about the device.
 596  *
 597  * @param dev
 598  *   Pointer to Ethernet device structure.
 599  * @param[out] info
 600  *   Info structure output buffer.
 601  */
 602 int
 603 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 604 {
 605         struct mlx5_priv *priv = dev->data->dev_private;
 606         struct mlx5_dev_config *config = &priv->config;
 607         unsigned int max;
 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         info->if_index = mlx5_ifindex(dev);
 629         info->reta_size = priv->reta_idx_n ?
 630                 priv->reta_idx_n : config->ind_table_max_size;
 631         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
 632         info->speed_capa = priv->link_speed_capa;
 633         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 634         mlx5_set_default_params(dev, info);
 635         mlx5_set_txlimit_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                 uint16_t port_id;
 641
 642                 if (priv->pf_bond >= 0) {
 643                         /*
 644                          * Switch port ID is opaque value with driver defined
 645                          * format. Push the PF index in bonding configurations
 646                          * in upper four bits of port ID. If we get too many
 647                          * representors (more than 4K) or PFs (more than 15)
 648                          * this approach must be reconsidered.
 649                          */
 650                         if ((info->switch_info.port_id >>
 651                                 MLX5_PORT_ID_BONDING_PF_SHIFT) ||
 652                             priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) {
 653                                 DRV_LOG(ERR, "can't update switch port ID"
 654                                              " for bonding device");
 655                                 assert(false);
 656                                 return -ENODEV;
 657                         }
 658                         info->switch_info.port_id |=
 659                                 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT;
 660                 }
 661                 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 662                         struct mlx5_priv *opriv =
 663                                 rte_eth_devices[port_id].data->dev_private;
 664
 665                         if (!opriv ||
 666                             opriv->representor ||
 667                             opriv->sh != priv->sh ||
 668                             opriv->domain_id != priv->domain_id)
 669                                 continue;
 670                         /*
 671                          * Override switch name with that of the master
 672                          * device.
 673                          */
 674                         info->switch_info.name = opriv->dev_data->name;
 675                         break;
 676                 }
 677         }
 678         return 0;
 679 }
 680
 681 /**
 682  * Get device current raw clock counter
 683  *
 684  * @param dev
 685  *   Pointer to Ethernet device structure.
 686  * @param[out] time
 687  *   Current raw clock counter of the device.
 688  *
 689  * @return
 690  *   0 if the clock has correctly been read
 691  *   The value of errno in case of error
 692  */
 693 int
 694 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock)
 695 {
 696         struct mlx5_priv *priv = dev->data->dev_private;
 697         struct ibv_context *ctx = priv->sh->ctx;
 698         struct ibv_values_ex values;
 699         int err = 0;
 700
 701         values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK;
 702         err = mlx5_glue->query_rt_values_ex(ctx, &values);
 703         if (err != 0) {
 704                 DRV_LOG(WARNING, "Could not query the clock !");
 705                 return err;
 706         }
 707         *clock = values.raw_clock.tv_nsec;
 708         return 0;
 709 }
 710
 711 /**
 712  * Get firmware version of a device.
 713  *
 714  * @param dev
 715  *   Ethernet device port.
 716  * @param fw_ver
 717  *   String output allocated by caller.
 718  * @param fw_size
 719  *   Size of the output string, including terminating null byte.
 720  *
 721  * @return
 722  *   0 on success, or the size of the non truncated string if too big.
 723  */
 724 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 725 {
 726         struct mlx5_priv *priv = dev->data->dev_private;
 727         struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr;
 728         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 729
 730         if (fw_size < size)
 731                 return size;
 732         if (fw_ver != NULL)
 733                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 734         return 0;
 735 }
 736
 737 /**
 738  * Get supported packet types.
 739  *
 740  * @param dev
 741  *   Pointer to Ethernet device structure.
 742  *
 743  * @return
 744  *   A pointer to the supported Packet types array.
 745  */
 746 const uint32_t *
 747 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 748 {
 749         static const uint32_t ptypes[] = {
 750                 /* refers to rxq_cq_to_pkt_type() */
 751                 RTE_PTYPE_L2_ETHER,
 752                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 753                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 754                 RTE_PTYPE_L4_NONFRAG,
 755                 RTE_PTYPE_L4_FRAG,
 756                 RTE_PTYPE_L4_TCP,
 757                 RTE_PTYPE_L4_UDP,
 758                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 759                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 760                 RTE_PTYPE_INNER_L4_NONFRAG,
 761                 RTE_PTYPE_INNER_L4_FRAG,
 762                 RTE_PTYPE_INNER_L4_TCP,
 763                 RTE_PTYPE_INNER_L4_UDP,
 764                 RTE_PTYPE_UNKNOWN
 765         };
 766
 767         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 768             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 769             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 770                 return ptypes;
 771         return NULL;
 772 }
 773
 774 /**
 775  * Retrieve the master device for representor in the same switch domain.
 776  *
 777  * @param dev
 778  *   Pointer to representor Ethernet device structure.
 779  *
 780  * @return
 781  *   Master device structure  on success, NULL otherwise.
 782  */
 783
 784 static struct rte_eth_dev *
 785 mlx5_find_master_dev(struct rte_eth_dev *dev)
 786 {
 787         struct mlx5_priv *priv;
 788         uint16_t port_id;
 789         uint16_t domain_id;
 790
 791         priv = dev->data->dev_private;
 792         domain_id = priv->domain_id;
 793         assert(priv->representor);
 794         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 795                 struct mlx5_priv *opriv =
 796                         rte_eth_devices[port_id].data->dev_private;
 797                 if (opriv &&
 798                     opriv->master &&
 799                     opriv->domain_id == domain_id &&
 800                     opriv->sh == priv->sh)
 801                         return &rte_eth_devices[port_id];
 802         }
 803         return NULL;
 804 }
 805
 806 /**
 807  * DPDK callback to retrieve physical link information.
 808  *
 809  * @param dev
 810  *   Pointer to Ethernet device structure.
 811  * @param[out] link
 812  *   Storage for current link status.
 813  *
 814  * @return
 815  *   0 on success, a negative errno value otherwise and rte_errno is set.
 816  */
 817 static int
 818 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev,
 819                                struct rte_eth_link *link)
 820 {
 821         struct mlx5_priv *priv = dev->data->dev_private;
 822         struct ethtool_cmd edata = {
 823                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 824         };
 825         struct ifreq ifr;
 826         struct rte_eth_link dev_link;
 827         int link_speed = 0;
 828         int ret;
 829
 830         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 831         if (ret) {
 832                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 833                         dev->data->port_id, strerror(rte_errno));
 834                 return ret;
 835         }
 836         dev_link = (struct rte_eth_link) {
 837                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 838                                 (ifr.ifr_flags & IFF_RUNNING)),
 839         };
 840         ifr = (struct ifreq) {
 841                 .ifr_data = (void *)&edata,
 842         };
 843         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 844         if (ret) {
 845                 if (ret == -ENOTSUP && priv->representor) {
 846                         struct rte_eth_dev *master;
 847
 848                         /*
 849                          * For representors we can try to inherit link
 850                          * settings from the master device. Actually
 851                          * link settings do not make a lot of sense
 852                          * for representors due to missing physical
 853                          * link. The old kernel drivers supported
 854                          * emulated settings query for representors,
 855                          * the new ones do not, so we have to add
 856                          * this code for compatibility issues.
 857                          */
 858                         master = mlx5_find_master_dev(dev);
 859                         if (master) {
 860                                 ifr = (struct ifreq) {
 861                                         .ifr_data = (void *)&edata,
 862                                 };
 863                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 864                         }
 865                 }
 866                 if (ret) {
 867                         DRV_LOG(WARNING,
 868                                 "port %u ioctl(SIOCETHTOOL,"
 869                                 " ETHTOOL_GSET) failed: %s",
 870                                 dev->data->port_id, strerror(rte_errno));
 871                         return ret;
 872                 }
 873         }
 874         link_speed = ethtool_cmd_speed(&edata);
 875         if (link_speed == -1)
 876                 dev_link.link_speed = ETH_SPEED_NUM_NONE;
 877         else
 878                 dev_link.link_speed = link_speed;
 879         priv->link_speed_capa = 0;
 880         if (edata.supported & SUPPORTED_Autoneg)
 881                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 882         if (edata.supported & (SUPPORTED_1000baseT_Full |
 883                                SUPPORTED_1000baseKX_Full))
 884                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 885         if (edata.supported & SUPPORTED_10000baseKR_Full)
 886                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 887         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 888                                SUPPORTED_40000baseCR4_Full |
 889                                SUPPORTED_40000baseSR4_Full |
 890                                SUPPORTED_40000baseLR4_Full))
 891                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 892         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 893                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 894         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 895                         ETH_LINK_SPEED_FIXED);
 896         if (((dev_link.link_speed && !dev_link.link_status) ||
 897              (!dev_link.link_speed && dev_link.link_status))) {
 898                 rte_errno = EAGAIN;
 899                 return -rte_errno;
 900         }
 901         *link = dev_link;
 902         return 0;
 903 }
 904
 905 /**
 906  * Retrieve physical link information (unlocked version using new ioctl).
 907  *
 908  * @param dev
 909  *   Pointer to Ethernet device structure.
 910  * @param[out] link
 911  *   Storage for current link status.
 912  *
 913  * @return
 914  *   0 on success, a negative errno value otherwise and rte_errno is set.
 915  */
 916 static int
 917 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev,
 918                              struct rte_eth_link *link)
 919
 920 {
 921         struct mlx5_priv *priv = dev->data->dev_private;
 922         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 923         struct ifreq ifr;
 924         struct rte_eth_link dev_link;
 925         struct rte_eth_dev *master = NULL;
 926         uint64_t sc;
 927         int ret;
 928
 929         ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr);
 930         if (ret) {
 931                 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s",
 932                         dev->data->port_id, strerror(rte_errno));
 933                 return ret;
 934         }
 935         dev_link = (struct rte_eth_link) {
 936                 .link_status = ((ifr.ifr_flags & IFF_UP) &&
 937                                 (ifr.ifr_flags & IFF_RUNNING)),
 938         };
 939         ifr = (struct ifreq) {
 940                 .ifr_data = (void *)&gcmd,
 941         };
 942         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
 943         if (ret) {
 944                 if (ret == -ENOTSUP && priv->representor) {
 945                         /*
 946                          * For representors we can try to inherit link
 947                          * settings from the master device. Actually
 948                          * link settings do not make a lot of sense
 949                          * for representors due to missing physical
 950                          * link. The old kernel drivers supported
 951                          * emulated settings query for representors,
 952                          * the new ones do not, so we have to add
 953                          * this code for compatibility issues.
 954                          */
 955                         master = mlx5_find_master_dev(dev);
 956                         if (master) {
 957                                 ifr = (struct ifreq) {
 958                                         .ifr_data = (void *)&gcmd,
 959                                 };
 960                                 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr);
 961                         }
 962                 }
 963                 if (ret) {
 964                         DRV_LOG(DEBUG,
 965                                 "port %u ioctl(SIOCETHTOOL,"
 966                                 " ETHTOOL_GLINKSETTINGS) failed: %s",
 967                                 dev->data->port_id, strerror(rte_errno));
 968                         return ret;
 969                 }
 970
 971         }
 972         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 973
 974         alignas(struct ethtool_link_settings)
 975         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 976                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 977         struct ethtool_link_settings *ecmd = (void *)data;
 978
 979         *ecmd = gcmd;
 980         ifr.ifr_data = (void *)ecmd;
 981         ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr);
 982         if (ret) {
 983                 DRV_LOG(DEBUG,
 984                         "port %u ioctl(SIOCETHTOOL,"
 985                         "ETHTOOL_GLINKSETTINGS) failed: %s",
 986                         dev->data->port_id, strerror(rte_errno));
 987                 return ret;
 988         }
 989         dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE :
 990                                                             ecmd->speed;
 991         sc = ecmd->link_mode_masks[0] |
 992                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 993         priv->link_speed_capa = 0;
 994         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 995                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 996         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 997                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 998                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 999         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
1000                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
1001                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
1002                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
1003         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
1004                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
1005                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
1006         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
1007                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
1008                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
1009                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
1010                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
1011         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
1012                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
1013                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
1014                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
1015                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
1016         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
1017                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
1018                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
1019                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
1020         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
1021                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
1022                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
1023         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
1024                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
1025                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
1026                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
1027                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
1028         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
1029                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
1030         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
1031                                   ETH_LINK_SPEED_FIXED);
1032         if (((dev_link.link_speed && !dev_link.link_status) ||
1033              (!dev_link.link_speed && dev_link.link_status))) {
1034                 rte_errno = EAGAIN;
1035                 return -rte_errno;
1036         }
1037         *link = dev_link;
1038         return 0;
1039 }
1040
1041 /**
1042  * DPDK callback to retrieve physical link information.
1043  *
1044  * @param dev
1045  *   Pointer to Ethernet device structure.
1046  * @param wait_to_complete
1047  *   Wait for request completion.
1048  *
1049  * @return
1050  *   0 if link status was not updated, positive if it was, a negative errno
1051  *   value otherwise and rte_errno is set.
1052  */
1053 int
1054 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
1055 {
1056         int ret;
1057         struct rte_eth_link dev_link;
1058         time_t start_time = time(NULL);
1059         int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT;
1060
1061         do {
1062                 ret = mlx5_link_update_unlocked_gs(dev, &dev_link);
1063                 if (ret == -ENOTSUP)
1064                         ret = mlx5_link_update_unlocked_gset(dev, &dev_link);
1065                 if (ret == 0)
1066                         break;
1067                 /* Handle wait to complete situation. */
1068                 if ((wait_to_complete || retry) && ret == -EAGAIN) {
1069                         if (abs((int)difftime(time(NULL), start_time)) <
1070                             MLX5_LINK_STATUS_TIMEOUT) {
1071                                 usleep(0);
1072                                 continue;
1073                         } else {
1074                                 rte_errno = EBUSY;
1075                                 return -rte_errno;
1076                         }
1077                 } else if (ret < 0) {
1078                         return ret;
1079                 }
1080         } while (wait_to_complete || retry-- > 0);
1081         ret = !!memcmp(&dev->data->dev_link, &dev_link,
1082                        sizeof(struct rte_eth_link));
1083         dev->data->dev_link = dev_link;
1084         return ret;
1085 }
1086
1087 /**
1088  * DPDK callback to change the MTU.
1089  *
1090  * @param dev
1091  *   Pointer to Ethernet device structure.
1092  * @param in_mtu
1093  *   New MTU.
1094  *
1095  * @return
1096  *   0 on success, a negative errno value otherwise and rte_errno is set.
1097  */
1098 int
1099 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1100 {
1101         struct mlx5_priv *priv = dev->data->dev_private;
1102         uint16_t kern_mtu = 0;
1103         int ret;
1104
1105         ret = mlx5_get_mtu(dev, &kern_mtu);
1106         if (ret)
1107                 return ret;
1108         /* Set kernel interface MTU first. */
1109         ret = mlx5_set_mtu(dev, mtu);
1110         if (ret)
1111                 return ret;
1112         ret = mlx5_get_mtu(dev, &kern_mtu);
1113         if (ret)
1114                 return ret;
1115         if (kern_mtu == mtu) {
1116                 priv->mtu = mtu;
1117                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
1118                         dev->data->port_id, mtu);
1119                 return 0;
1120         }
1121         rte_errno = EAGAIN;
1122         return -rte_errno;
1123 }
1124
1125 /**
1126  * DPDK callback to get flow control status.
1127  *
1128  * @param dev
1129  *   Pointer to Ethernet device structure.
1130  * @param[out] fc_conf
1131  *   Flow control output buffer.
1132  *
1133  * @return
1134  *   0 on success, a negative errno value otherwise and rte_errno is set.
1135  */
1136 int
1137 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1138 {
1139         struct ifreq ifr;
1140         struct ethtool_pauseparam ethpause = {
1141                 .cmd = ETHTOOL_GPAUSEPARAM
1142         };
1143         int ret;
1144
1145         ifr.ifr_data = (void *)&ethpause;
1146         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1147         if (ret) {
1148                 DRV_LOG(WARNING,
1149                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:"
1150                         " %s",
1151                         dev->data->port_id, strerror(rte_errno));
1152                 return ret;
1153         }
1154         fc_conf->autoneg = ethpause.autoneg;
1155         if (ethpause.rx_pause && ethpause.tx_pause)
1156                 fc_conf->mode = RTE_FC_FULL;
1157         else if (ethpause.rx_pause)
1158                 fc_conf->mode = RTE_FC_RX_PAUSE;
1159         else if (ethpause.tx_pause)
1160                 fc_conf->mode = RTE_FC_TX_PAUSE;
1161         else
1162                 fc_conf->mode = RTE_FC_NONE;
1163         return 0;
1164 }
1165
1166 /**
1167  * DPDK callback to modify flow control parameters.
1168  *
1169  * @param dev
1170  *   Pointer to Ethernet device structure.
1171  * @param[in] fc_conf
1172  *   Flow control parameters.
1173  *
1174  * @return
1175  *   0 on success, a negative errno value otherwise and rte_errno is set.
1176  */
1177 int
1178 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1179 {
1180         struct ifreq ifr;
1181         struct ethtool_pauseparam ethpause = {
1182                 .cmd = ETHTOOL_SPAUSEPARAM
1183         };
1184         int ret;
1185
1186         ifr.ifr_data = (void *)&ethpause;
1187         ethpause.autoneg = fc_conf->autoneg;
1188         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1189             (fc_conf->mode & RTE_FC_RX_PAUSE))
1190                 ethpause.rx_pause = 1;
1191         else
1192                 ethpause.rx_pause = 0;
1193
1194         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1195             (fc_conf->mode & RTE_FC_TX_PAUSE))
1196                 ethpause.tx_pause = 1;
1197         else
1198                 ethpause.tx_pause = 0;
1199         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
1200         if (ret) {
1201                 DRV_LOG(WARNING,
1202                         "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1203                         " failed: %s",
1204                         dev->data->port_id, strerror(rte_errno));
1205                 return ret;
1206         }
1207         return 0;
1208 }
1209
1210 /**
1211  * Get PCI information by sysfs device path.
1212  *
1213  * @param dev_path
1214  *   Pointer to device sysfs folder name.
1215  * @param[out] pci_addr
1216  *   PCI bus address output buffer.
1217  *
1218  * @return
1219  *   0 on success, a negative errno value otherwise and rte_errno is set.
1220  */
1221 int
1222 mlx5_dev_to_pci_addr(const char *dev_path,
1223                      struct rte_pci_addr *pci_addr)
1224 {
1225         FILE *file;
1226         char line[32];
1227         MKSTR(path, "%s/device/uevent", dev_path);
1228
1229         file = fopen(path, "rb");
1230         if (file == NULL) {
1231                 rte_errno = errno;
1232                 return -rte_errno;
1233         }
1234         while (fgets(line, sizeof(line), file) == line) {
1235                 size_t len = strlen(line);
1236                 int ret;
1237
1238                 /* Truncate long lines. */
1239                 if (len == (sizeof(line) - 1))
1240                         while (line[(len - 1)] != '\n') {
1241                                 ret = fgetc(file);
1242                                 if (ret == EOF)
1243                                         break;
1244                                 line[(len - 1)] = ret;
1245                         }
1246                 /* Extract information. */
1247                 if (sscanf(line,
1248                            "PCI_SLOT_NAME="
1249                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1250                            &pci_addr->domain,
1251                            &pci_addr->bus,
1252                            &pci_addr->devid,
1253                            &pci_addr->function) == 4) {
1254                         ret = 0;
1255                         break;
1256                 }
1257         }
1258         fclose(file);
1259         return 0;
1260 }
1261
1262 /**
1263  * Handle asynchronous removal event for entire multiport device.
1264  *
1265  * @param sh
1266  *   Infiniband device shared context.
1267  */
1268 static void
1269 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh)
1270 {
1271         uint32_t i;
1272
1273         for (i = 0; i < sh->max_port; ++i) {
1274                 struct rte_eth_dev *dev;
1275
1276                 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) {
1277                         /*
1278                          * Or not existing port either no
1279                          * handler installed for this port.
1280                          */
1281                         continue;
1282                 }
1283                 dev = &rte_eth_devices[sh->port[i].ih_port_id];
1284                 assert(dev);
1285                 if (dev->data->dev_conf.intr_conf.rmv)
1286                         _rte_eth_dev_callback_process
1287                                 (dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1288         }
1289 }
1290
1291 /**
1292  * Handle shared asynchronous events the NIC (removal event
1293  * and link status change). Supports multiport IB device.
1294  *
1295  * @param cb_arg
1296  *   Callback argument.
1297  */
1298 void
1299 mlx5_dev_interrupt_handler(void *cb_arg)
1300 {
1301         struct mlx5_ibv_shared *sh = cb_arg;
1302         struct ibv_async_event event;
1303
1304         /* Read all message from the IB device and acknowledge them. */
1305         for (;;) {
1306                 struct rte_eth_dev *dev;
1307                 uint32_t tmp;
1308
1309                 if (mlx5_glue->get_async_event(sh->ctx, &event))
1310                         break;
1311                 /* Retrieve and check IB port index. */
1312                 tmp = (uint32_t)event.element.port_num;
1313                 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) {
1314                         /*
1315                          * The DEVICE_FATAL event is called once for
1316                          * entire device without port specifying.
1317                          * We should notify all existing ports.
1318                          */
1319                         mlx5_glue->ack_async_event(&event);
1320                         mlx5_dev_interrupt_device_fatal(sh);
1321                         continue;
1322                 }
1323                 assert(tmp && (tmp <= sh->max_port));
1324                 if (!tmp) {
1325                         /* Unsupported devive level event. */
1326                         mlx5_glue->ack_async_event(&event);
1327                         DRV_LOG(DEBUG,
1328                                 "unsupported common event (type %d)",
1329                                 event.event_type);
1330                         continue;
1331                 }
1332                 if (tmp > sh->max_port) {
1333                         /* Invalid IB port index. */
1334                         mlx5_glue->ack_async_event(&event);
1335                         DRV_LOG(DEBUG,
1336                                 "cannot handle an event (type %d)"
1337                                 "due to invalid IB port index (%u)",
1338                                 event.event_type, tmp);
1339                         continue;
1340                 }
1341                 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) {
1342                         /* No handler installed. */
1343                         mlx5_glue->ack_async_event(&event);
1344                         DRV_LOG(DEBUG,
1345                                 "cannot handle an event (type %d)"
1346                                 "due to no handler installed for port %u",
1347                                 event.event_type, tmp);
1348                         continue;
1349                 }
1350                 /* Retrieve ethernet device descriptor. */
1351                 tmp = sh->port[tmp - 1].ih_port_id;
1352                 dev = &rte_eth_devices[tmp];
1353                 assert(dev);
1354                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1355                      event.event_type == IBV_EVENT_PORT_ERR) &&
1356                         dev->data->dev_conf.intr_conf.lsc) {
1357                         mlx5_glue->ack_async_event(&event);
1358                         if (mlx5_link_update(dev, 0) == -EAGAIN) {
1359                                 usleep(0);
1360                                 continue;
1361                         }
1362                         _rte_eth_dev_callback_process
1363                                 (dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1364                         continue;
1365                 }
1366                 DRV_LOG(DEBUG,
1367                         "port %u cannot handle an unknown event (type %d)",
1368                         dev->data->port_id, event.event_type);
1369                 mlx5_glue->ack_async_event(&event);
1370         }
1371 }
1372
1373 /*
1374  * Unregister callback handler safely. The handler may be active
1375  * while we are trying to unregister it, in this case code -EAGAIN
1376  * is returned by rte_intr_callback_unregister(). This routine checks
1377  * the return code and tries to unregister handler again.
1378  *
1379  * @param handle
1380  *   interrupt handle
1381  * @param cb_fn
1382  *   pointer to callback routine
1383  * @cb_arg
1384  *   opaque callback parameter
1385  */
1386 void
1387 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle,
1388                               rte_intr_callback_fn cb_fn, void *cb_arg)
1389 {
1390         /*
1391          * Try to reduce timeout management overhead by not calling
1392          * the timer related routines on the first iteration. If the
1393          * unregistering succeeds on first call there will be no
1394          * timer calls at all.
1395          */
1396         uint64_t twait = 0;
1397         uint64_t start = 0;
1398
1399         do {
1400                 int ret;
1401
1402                 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg);
1403                 if (ret >= 0)
1404                         return;
1405                 if (ret != -EAGAIN) {
1406                         DRV_LOG(INFO, "failed to unregister interrupt"
1407                                       " handler (error: %d)", ret);
1408                         assert(false);
1409                         return;
1410                 }
1411                 if (twait) {
1412                         struct timespec onems;
1413
1414                         /* Wait one millisecond and try again. */
1415                         onems.tv_sec = 0;
1416                         onems.tv_nsec = NS_PER_S / MS_PER_S;
1417                         nanosleep(&onems, 0);
1418                         /* Check whether one second elapsed. */
1419                         if ((rte_get_timer_cycles() - start) <= twait)
1420                                 continue;
1421                 } else {
1422                         /*
1423                          * We get the amount of timer ticks for one second.
1424                          * If this amount elapsed it means we spent one
1425                          * second in waiting. This branch is executed once
1426                          * on first iteration.
1427                          */
1428                         twait = rte_get_timer_hz();
1429                         assert(twait);
1430                 }
1431                 /*
1432                  * Timeout elapsed, show message (once a second) and retry.
1433                  * We have no other acceptable option here, if we ignore
1434                  * the unregistering return code the handler will not
1435                  * be unregistered, fd will be closed and we may get the
1436                  * crush. Hanging and messaging in the loop seems not to be
1437                  * the worst choice.
1438                  */
1439                 DRV_LOG(INFO, "Retrying to unregister interrupt handler");
1440                 start = rte_get_timer_cycles();
1441         } while (true);
1442 }
1443
1444 /**
1445  * Handle DEVX interrupts from the NIC.
1446  * This function is probably called from the DPDK host thread.
1447  *
1448  * @param cb_arg
1449  *   Callback argument.
1450  */
1451 void
1452 mlx5_dev_interrupt_handler_devx(void *cb_arg)
1453 {
1454 #ifndef HAVE_IBV_DEVX_ASYNC
1455         (void)cb_arg;
1456         return;
1457 #else
1458         struct mlx5_ibv_shared *sh = cb_arg;
1459         union {
1460                 struct mlx5dv_devx_async_cmd_hdr cmd_resp;
1461                 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) +
1462                             MLX5_ST_SZ_BYTES(traffic_counter) +
1463                             sizeof(struct mlx5dv_devx_async_cmd_hdr)];
1464         } out;
1465         uint8_t *buf = out.buf + sizeof(out.cmd_resp);
1466
1467         while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp,
1468                                                    &out.cmd_resp,
1469                                                    sizeof(out.buf)))
1470                 mlx5_flow_async_pool_query_handle
1471                         (sh, (uint64_t)out.cmd_resp.wr_id,
1472                          mlx5_devx_get_out_command_status(buf));
1473 #endif /* HAVE_IBV_DEVX_ASYNC */
1474 }
1475
1476 /**
1477  * Uninstall shared asynchronous device events handler.
1478  * This function is implemented to support event sharing
1479  * between multiple ports of single IB device.
1480  *
1481  * @param dev
1482  *   Pointer to Ethernet device.
1483  */
1484 static void
1485 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev)
1486 {
1487         struct mlx5_priv *priv = dev->data->dev_private;
1488         struct mlx5_ibv_shared *sh = priv->sh;
1489
1490         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1491                 return;
1492         pthread_mutex_lock(&sh->intr_mutex);
1493         assert(priv->ibv_port);
1494         assert(priv->ibv_port <= sh->max_port);
1495         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1496         if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS)
1497                 goto exit;
1498         assert(sh->port[priv->ibv_port - 1].ih_port_id ==
1499                                         (uint32_t)dev->data->port_id);
1500         assert(sh->intr_cnt);
1501         sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS;
1502         if (!sh->intr_cnt || --sh->intr_cnt)
1503                 goto exit;
1504         mlx5_intr_callback_unregister(&sh->intr_handle,
1505                                      mlx5_dev_interrupt_handler, sh);
1506         sh->intr_handle.fd = 0;
1507         sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1508 exit:
1509         pthread_mutex_unlock(&sh->intr_mutex);
1510 }
1511
1512 /**
1513  * Uninstall devx shared asynchronous device events handler.
1514  * This function is implemeted to support event sharing
1515  * between multiple ports of single IB device.
1516  *
1517  * @param dev
1518  *   Pointer to Ethernet device.
1519  */
1520 static void
1521 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev)
1522 {
1523         struct mlx5_priv *priv = dev->data->dev_private;
1524         struct mlx5_ibv_shared *sh = priv->sh;
1525
1526         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1527                 return;
1528         pthread_mutex_lock(&sh->intr_mutex);
1529         assert(priv->ibv_port);
1530         assert(priv->ibv_port <= sh->max_port);
1531         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1532         if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS)
1533                 goto exit;
1534         assert(sh->port[priv->ibv_port - 1].devx_ih_port_id ==
1535                                         (uint32_t)dev->data->port_id);
1536         sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS;
1537         if (!sh->devx_intr_cnt || --sh->devx_intr_cnt)
1538                 goto exit;
1539         if (sh->intr_handle_devx.fd) {
1540                 rte_intr_callback_unregister(&sh->intr_handle_devx,
1541                                              mlx5_dev_interrupt_handler_devx,
1542                                              sh);
1543                 sh->intr_handle_devx.fd = 0;
1544                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN;
1545         }
1546         if (sh->devx_comp) {
1547                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
1548                 sh->devx_comp = NULL;
1549         }
1550 exit:
1551         pthread_mutex_unlock(&sh->intr_mutex);
1552 }
1553
1554 /**
1555  * Install shared asynchronous device events handler.
1556  * This function is implemented to support event sharing
1557  * between multiple ports of single IB device.
1558  *
1559  * @param dev
1560  *   Pointer to Ethernet device.
1561  */
1562 static void
1563 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev)
1564 {
1565         struct mlx5_priv *priv = dev->data->dev_private;
1566         struct mlx5_ibv_shared *sh = priv->sh;
1567         int ret;
1568         int flags;
1569
1570         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1571                 return;
1572         pthread_mutex_lock(&sh->intr_mutex);
1573         assert(priv->ibv_port);
1574         assert(priv->ibv_port <= sh->max_port);
1575         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1576         if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) {
1577                 /* The handler is already installed for this port. */
1578                 assert(sh->intr_cnt);
1579                 goto exit;
1580         }
1581         if (sh->intr_cnt) {
1582                 sh->port[priv->ibv_port - 1].ih_port_id =
1583                                                 (uint32_t)dev->data->port_id;
1584                 sh->intr_cnt++;
1585                 goto exit;
1586         }
1587         /* No shared handler installed. */
1588         assert(sh->ctx->async_fd > 0);
1589         flags = fcntl(sh->ctx->async_fd, F_GETFL);
1590         ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1591         if (ret) {
1592                 DRV_LOG(INFO, "failed to change file descriptor async event"
1593                         " queue");
1594                 /* Indicate there will be no interrupts. */
1595                 dev->data->dev_conf.intr_conf.lsc = 0;
1596                 dev->data->dev_conf.intr_conf.rmv = 0;
1597         } else {
1598                 sh->intr_handle.fd = sh->ctx->async_fd;
1599                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
1600                 rte_intr_callback_register(&sh->intr_handle,
1601                                            mlx5_dev_interrupt_handler, sh);
1602                 sh->intr_cnt++;
1603                 sh->port[priv->ibv_port - 1].ih_port_id =
1604                                                 (uint32_t)dev->data->port_id;
1605         }
1606 exit:
1607         pthread_mutex_unlock(&sh->intr_mutex);
1608 }
1609
1610 /**
1611  * Install devx shared asyncronous device events handler.
1612  * This function is implemeted to support event sharing
1613  * between multiple ports of single IB device.
1614  *
1615  * @param dev
1616  *   Pointer to Ethernet device.
1617  */
1618 static void
1619 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev)
1620 {
1621         struct mlx5_priv *priv = dev->data->dev_private;
1622         struct mlx5_ibv_shared *sh = priv->sh;
1623
1624         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
1625                 return;
1626         pthread_mutex_lock(&sh->intr_mutex);
1627         assert(priv->ibv_port);
1628         assert(priv->ibv_port <= sh->max_port);
1629         assert(dev->data->port_id < RTE_MAX_ETHPORTS);
1630         if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) {
1631                 /* The handler is already installed for this port. */
1632                 assert(sh->devx_intr_cnt);
1633                 goto exit;
1634         }
1635         if (sh->devx_intr_cnt) {
1636                 sh->devx_intr_cnt++;
1637                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1638                                         (uint32_t)dev->data->port_id;
1639                 goto exit;
1640         }
1641         if (priv->config.devx) {
1642 #ifndef HAVE_IBV_DEVX_ASYNC
1643                 goto exit;
1644 #else
1645                 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx);
1646                 if (sh->devx_comp) {
1647                         int flags = fcntl(sh->devx_comp->fd, F_GETFL);
1648                         int ret = fcntl(sh->devx_comp->fd, F_SETFL,
1649                                     flags | O_NONBLOCK);
1650
1651                         if (ret) {
1652                                 DRV_LOG(INFO, "failed to change file descriptor"
1653                                         " devx async event queue");
1654                         } else {
1655                                 sh->intr_handle_devx.fd = sh->devx_comp->fd;
1656                                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
1657                                 rte_intr_callback_register
1658                                         (&sh->intr_handle_devx,
1659                                          mlx5_dev_interrupt_handler_devx, sh);
1660                                 sh->devx_intr_cnt++;
1661                                 sh->port[priv->ibv_port - 1].devx_ih_port_id =
1662                                                 (uint32_t)dev->data->port_id;
1663                         }
1664                 }
1665 #endif /* HAVE_IBV_DEVX_ASYNC */
1666         }
1667 exit:
1668         pthread_mutex_unlock(&sh->intr_mutex);
1669 }
1670
1671 /**
1672  * Uninstall interrupt handler.
1673  *
1674  * @param dev
1675  *   Pointer to Ethernet device.
1676  */
1677 void
1678 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev)
1679 {
1680         mlx5_dev_shared_handler_uninstall(dev);
1681 }
1682
1683 /**
1684  * Install interrupt handler.
1685  *
1686  * @param dev
1687  *   Pointer to Ethernet device.
1688  */
1689 void
1690 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev)
1691 {
1692         mlx5_dev_shared_handler_install(dev);
1693 }
1694
1695 /**
1696  * Devx uninstall interrupt handler.
1697  *
1698  * @param dev
1699  *   Pointer to Ethernet device.
1700  */
1701 void
1702 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev)
1703 {
1704         mlx5_dev_shared_handler_devx_uninstall(dev);
1705 }
1706
1707 /**
1708  * Devx install interrupt handler.
1709  *
1710  * @param dev
1711  *   Pointer to Ethernet device.
1712  */
1713 void
1714 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev)
1715 {
1716         mlx5_dev_shared_handler_devx_install(dev);
1717 }
1718
1719 /**
1720  * DPDK callback to bring the link DOWN.
1721  *
1722  * @param dev
1723  *   Pointer to Ethernet device structure.
1724  *
1725  * @return
1726  *   0 on success, a negative errno value otherwise and rte_errno is set.
1727  */
1728 int
1729 mlx5_set_link_down(struct rte_eth_dev *dev)
1730 {
1731         return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP);
1732 }
1733
1734 /**
1735  * DPDK callback to bring the link UP.
1736  *
1737  * @param dev
1738  *   Pointer to Ethernet device structure.
1739  *
1740  * @return
1741  *   0 on success, a negative errno value otherwise and rte_errno is set.
1742  */
1743 int
1744 mlx5_set_link_up(struct rte_eth_dev *dev)
1745 {
1746         return mlx5_set_flags(dev, ~IFF_UP, IFF_UP);
1747 }
1748
1749 /**
1750  * Configure the RX function to use.
1751  *
1752  * @param dev
1753  *   Pointer to private data structure.
1754  *
1755  * @return
1756  *   Pointer to selected Rx burst function.
1757  */
1758 eth_rx_burst_t
1759 mlx5_select_rx_function(struct rte_eth_dev *dev)
1760 {
1761         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1762
1763         assert(dev != NULL);
1764         if (mlx5_check_vec_rx_support(dev) > 0) {
1765                 rx_pkt_burst = mlx5_rx_burst_vec;
1766                 DRV_LOG(DEBUG, "port %u selected Rx vectorized function",
1767                         dev->data->port_id);
1768         } else if (mlx5_mprq_enabled(dev)) {
1769                 rx_pkt_burst = mlx5_rx_burst_mprq;
1770         }
1771         return rx_pkt_burst;
1772 }
1773
1774 /**
1775  * Check if mlx5 device was removed.
1776  *
1777  * @param dev
1778  *   Pointer to Ethernet device structure.
1779  *
1780  * @return
1781  *   1 when device is removed, otherwise 0.
1782  */
1783 int
1784 mlx5_is_removed(struct rte_eth_dev *dev)
1785 {
1786         struct ibv_device_attr device_attr;
1787         struct mlx5_priv *priv = dev->data->dev_private;
1788
1789         if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO)
1790                 return 1;
1791         return 0;
1792 }
1793
1794 /**
1795  * Get the E-Switch parameters by port id.
1796  *
1797  * @param[in] port
1798  *   Device port id.
1799  * @param[in] valid
1800  *   Device port id is valid, skip check. This flag is useful
1801  *   when trials are performed from probing and device is not
1802  *   flagged as valid yet (in attaching process).
1803  * @param[out] es_domain_id
1804  *   E-Switch domain id.
1805  * @param[out] es_port_id
1806  *   The port id of the port in the E-Switch.
1807  *
1808  * @return
1809  *   pointer to device private data structure containing data needed
1810  *   on success, NULL otherwise and rte_errno is set.
1811  */
1812 struct mlx5_priv *
1813 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
1814 {
1815         struct rte_eth_dev *dev;
1816         struct mlx5_priv *priv;
1817
1818         if (port >= RTE_MAX_ETHPORTS) {
1819                 rte_errno = EINVAL;
1820                 return NULL;
1821         }
1822         if (!valid && !rte_eth_dev_is_valid_port(port)) {
1823                 rte_errno = ENODEV;
1824                 return NULL;
1825         }
1826         dev = &rte_eth_devices[port];
1827         priv = dev->data->dev_private;
1828         if (!(priv->representor || priv->master)) {
1829                 rte_errno = EINVAL;
1830                 return NULL;
1831         }
1832         return priv;
1833 }
1834
1835 /**
1836  * Get the E-Switch parameters by device instance.
1837  *
1838  * @param[in] port
1839  *   Device port id.
1840  * @param[out] es_domain_id
1841  *   E-Switch domain id.
1842  * @param[out] es_port_id
1843  *   The port id of the port in the E-Switch.
1844  *
1845  * @return
1846  *   pointer to device private data structure containing data needed
1847  *   on success, NULL otherwise and rte_errno is set.
1848  */
1849 struct mlx5_priv *
1850 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
1851 {
1852         struct mlx5_priv *priv;
1853
1854         priv = dev->data->dev_private;
1855         if (!(priv->representor || priv->master)) {
1856                 rte_errno = EINVAL;
1857                 return NULL;
1858         }
1859         return priv;
1860 }
1861
1862 /**
1863  * Get switch information associated with network interface.
1864  *
1865  * @param ifindex
1866  *   Network interface index.
1867  * @param[out] info
1868  *   Switch information object, populated in case of success.
1869  *
1870  * @return
1871  *   0 on success, a negative errno value otherwise and rte_errno is set.
1872  */
1873 int
1874 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info)
1875 {
1876         char ifname[IF_NAMESIZE];
1877         char port_name[IF_NAMESIZE];
1878         FILE *file;
1879         struct mlx5_switch_info data = {
1880                 .master = 0,
1881                 .representor = 0,
1882                 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET,
1883                 .port_name = 0,
1884                 .switch_id = 0,
1885         };
1886         DIR *dir;
1887         bool port_switch_id_set = false;
1888         bool device_dir = false;
1889         char c;
1890         int ret;
1891
1892         if (!if_indextoname(ifindex, ifname)) {
1893                 rte_errno = errno;
1894                 return -rte_errno;
1895         }
1896
1897         MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name",
1898               ifname);
1899         MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id",
1900               ifname);
1901         MKSTR(pci_device, "/sys/class/net/%s/device",
1902               ifname);
1903
1904         file = fopen(phys_port_name, "rb");
1905         if (file != NULL) {
1906                 ret = fscanf(file, "%s", port_name);
1907                 fclose(file);
1908                 if (ret == 1)
1909                         mlx5_translate_port_name(port_name, &data);
1910         }
1911         file = fopen(phys_switch_id, "rb");
1912         if (file == NULL) {
1913                 rte_errno = errno;
1914                 return -rte_errno;
1915         }
1916         port_switch_id_set =
1917                 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 &&
1918                 c == '\n';
1919         fclose(file);
1920         dir = opendir(pci_device);
1921         if (dir != NULL) {
1922                 closedir(dir);
1923                 device_dir = true;
1924         }
1925         if (port_switch_id_set) {
1926                 /* We have some E-Switch configuration. */
1927                 mlx5_sysfs_check_switch_info(device_dir, &data);
1928         }
1929         *info = data;
1930         assert(!(data.master && data.representor));
1931         if (data.master && data.representor) {
1932                 DRV_LOG(ERR, "ifindex %u device is recognized as master"
1933                              " and as representor", ifindex);
1934                 rte_errno = ENODEV;
1935                 return -rte_errno;
1936         }
1937         return 0;
1938 }
1939
1940 /**
1941  * Analyze gathered port parameters via Netlink to recognize master
1942  * and representor devices for E-Switch configuration.
1943  *
1944  * @param[in] num_vf_set
1945  *   flag of presence of number of VFs port attribute.
1946  * @param[inout] switch_info
1947  *   Port information, including port name as a number and port name
1948  *   type if recognized
1949  *
1950  * @return
1951  *   master and representor flags are set in switch_info according to
1952  *   recognized parameters (if any).
1953  */
1954 void
1955 mlx5_nl_check_switch_info(bool num_vf_set,
1956                           struct mlx5_switch_info *switch_info)
1957 {
1958         switch (switch_info->name_type) {
1959         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
1960                 /*
1961                  * Name is not recognized, assume the master,
1962                  * check the number of VFs key presence.
1963                  */
1964                 switch_info->master = num_vf_set;
1965                 break;
1966         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
1967                 /*
1968                  * Name is not set, this assumes the legacy naming
1969                  * schema for master, just check if there is a
1970                  * number of VFs key.
1971                  */
1972                 switch_info->master = num_vf_set;
1973                 break;
1974         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1975                 /* New uplink naming schema recognized. */
1976                 switch_info->master = 1;
1977                 break;
1978         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
1979                 /* Legacy representors naming schema. */
1980                 switch_info->representor = !num_vf_set;
1981                 break;
1982         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1983                 /* New representors naming schema. */
1984                 switch_info->representor = 1;
1985                 break;
1986         }
1987 }
1988
1989 /**
1990  * Analyze gathered port parameters via sysfs to recognize master
1991  * and representor devices for E-Switch configuration.
1992  *
1993  * @param[in] device_dir
1994  *   flag of presence of "device" directory under port device key.
1995  * @param[inout] switch_info
1996  *   Port information, including port name as a number and port name
1997  *   type if recognized
1998  *
1999  * @return
2000  *   master and representor flags are set in switch_info according to
2001  *   recognized parameters (if any).
2002  */
2003 void
2004 mlx5_sysfs_check_switch_info(bool device_dir,
2005                              struct mlx5_switch_info *switch_info)
2006 {
2007         switch (switch_info->name_type) {
2008         case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN:
2009                 /*
2010                  * Name is not recognized, assume the master,
2011                  * check the device directory presence.
2012                  */
2013                 switch_info->master = device_dir;
2014                 break;
2015         case MLX5_PHYS_PORT_NAME_TYPE_NOTSET:
2016                 /*
2017                  * Name is not set, this assumes the legacy naming
2018                  * schema for master, just check if there is
2019                  * a device directory.
2020                  */
2021                 switch_info->master = device_dir;
2022                 break;
2023         case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
2024                 /* New uplink naming schema recognized. */
2025                 switch_info->master = 1;
2026                 break;
2027         case MLX5_PHYS_PORT_NAME_TYPE_LEGACY:
2028                 /* Legacy representors naming schema. */
2029                 switch_info->representor = !device_dir;
2030                 break;
2031         case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
2032                 /* New representors naming schema. */
2033                 switch_info->representor = 1;
2034                 break;
2035         }
2036 }
2037
2038 /**
2039  * Extract port name, as a number, from sysfs or netlink information.
2040  *
2041  * @param[in] port_name_in
2042  *   String representing the port name.
2043  * @param[out] port_info_out
2044  *   Port information, including port name as a number and port name
2045  *   type if recognized
2046  *
2047  * @return
2048  *   port_name field set according to recognized name format.
2049  */
2050 void
2051 mlx5_translate_port_name(const char *port_name_in,
2052                          struct mlx5_switch_info *port_info_out)
2053 {
2054         char pf_c1, pf_c2, vf_c1, vf_c2;
2055         char *end;
2056         int sc_items;
2057
2058         /*
2059          * Check for port-name as a string of the form pf0vf0
2060          * (support kernel ver >= 5.0 or OFED ver >= 4.6).
2061          */
2062         sc_items = sscanf(port_name_in, "%c%c%d%c%c%d",
2063                           &pf_c1, &pf_c2, &port_info_out->pf_num,
2064                           &vf_c1, &vf_c2, &port_info_out->port_name);
2065         if (sc_items == 6 &&
2066             pf_c1 == 'p' && pf_c2 == 'f' &&
2067             vf_c1 == 'v' && vf_c2 == 'f') {
2068                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF;
2069                 return;
2070         }
2071         /*
2072          * Check for port-name as a string of the form p0
2073          * (support kernel ver >= 5.0, or OFED ver >= 4.6).
2074          */
2075         sc_items = sscanf(port_name_in, "%c%d",
2076                           &pf_c1, &port_info_out->port_name);
2077         if (sc_items == 2 && pf_c1 == 'p') {
2078                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK;
2079                 return;
2080         }
2081         /* Check for port-name as a number (support kernel ver < 5.0 */
2082         errno = 0;
2083         port_info_out->port_name = strtol(port_name_in, &end, 0);
2084         if (!errno &&
2085             (size_t)(end - port_name_in) == strlen(port_name_in)) {
2086                 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY;
2087                 return;
2088         }
2089         port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN;
2090         return;
2091 }
2092
2093 /**
2094  * DPDK callback to retrieve plug-in module EEPROM information (type and size).
2095  *
2096  * @param dev
2097  *   Pointer to Ethernet device structure.
2098  * @param[out] modinfo
2099  *   Storage for plug-in module EEPROM information.
2100  *
2101  * @return
2102  *   0 on success, a negative errno value otherwise and rte_errno is set.
2103  */
2104 int
2105 mlx5_get_module_info(struct rte_eth_dev *dev,
2106                      struct rte_eth_dev_module_info *modinfo)
2107 {
2108         struct ethtool_modinfo info = {
2109                 .cmd = ETHTOOL_GMODULEINFO,
2110         };
2111         struct ifreq ifr = (struct ifreq) {
2112                 .ifr_data = (void *)&info,
2113         };
2114         int ret = 0;
2115
2116         if (!dev || !modinfo) {
2117                 DRV_LOG(WARNING, "missing argument, cannot get module info");
2118                 rte_errno = EINVAL;
2119                 return -rte_errno;
2120         }
2121         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2122         if (ret) {
2123                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2124                         dev->data->port_id, strerror(rte_errno));
2125                 return ret;
2126         }
2127         modinfo->type = info.type;
2128         modinfo->eeprom_len = info.eeprom_len;
2129         return ret;
2130 }
2131
2132 /**
2133  * DPDK callback to retrieve plug-in module EEPROM data.
2134  *
2135  * @param dev
2136  *   Pointer to Ethernet device structure.
2137  * @param[out] info
2138  *   Storage for plug-in module EEPROM data.
2139  *
2140  * @return
2141  *   0 on success, a negative errno value otherwise and rte_errno is set.
2142  */
2143 int mlx5_get_module_eeprom(struct rte_eth_dev *dev,
2144                            struct rte_dev_eeprom_info *info)
2145 {
2146         struct ethtool_eeprom *eeprom;
2147         struct ifreq ifr;
2148         int ret = 0;
2149
2150         if (!dev || !info) {
2151                 DRV_LOG(WARNING, "missing argument, cannot get module eeprom");
2152                 rte_errno = EINVAL;
2153                 return -rte_errno;
2154         }
2155         eeprom = rte_calloc(__func__, 1,
2156                             (sizeof(struct ethtool_eeprom) + info->length), 0);
2157         if (!eeprom) {
2158                 DRV_LOG(WARNING, "port %u cannot allocate memory for "
2159                         "eeprom data", dev->data->port_id);
2160                 rte_errno = ENOMEM;
2161                 return -rte_errno;
2162         }
2163         eeprom->cmd = ETHTOOL_GMODULEEEPROM;
2164         eeprom->offset = info->offset;
2165         eeprom->len = info->length;
2166         ifr = (struct ifreq) {
2167                 .ifr_data = (void *)eeprom,
2168         };
2169         ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr);
2170         if (ret)
2171                 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s",
2172                         dev->data->port_id, strerror(rte_errno));
2173         else
2174                 rte_memcpy(info->data, eeprom->data, info->length);
2175         rte_free(eeprom);
2176         return ret;
2177 }
2178
2179 /**
2180  * DPDK callback to retrieve hairpin capabilities.
2181  *
2182  * @param dev
2183  *   Pointer to Ethernet device structure.
2184  * @param[out] cap
2185  *   Storage for hairpin capability data.
2186  *
2187  * @return
2188  *   0 on success, a negative errno value otherwise and rte_errno is set.
2189  */
2190 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev,
2191                          struct rte_eth_hairpin_cap *cap)
2192 {
2193         struct mlx5_priv *priv = dev->data->dev_private;
2194
2195         if (priv->sh->devx == 0) {
2196                 rte_errno = ENOTSUP;
2197                 return -rte_errno;
2198         }
2199         cap->max_nb_queues = UINT16_MAX;
2200         cap->max_rx_2_tx = 1;
2201         cap->max_tx_2_rx = 1;
2202         cap->max_nb_desc = 8192;
2203         return 0;
2204 }