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 <unistd.h>
   8 #include <string.h>
   9 #include <stdint.h>
  10 #include <stdlib.h>
  11 #include <errno.h>
  12
  13 #include <ethdev_driver.h>
  14 #include <rte_bus_pci.h>
  15 #include <rte_mbuf.h>
  16 #include <rte_common.h>
  17 #include <rte_interrupts.h>
  18 #include <rte_malloc.h>
  19 #include <rte_string_fns.h>
  20 #include <rte_rwlock.h>
  21 #include <rte_cycles.h>
  22
  23 #include <mlx5_malloc.h>
  24
  25 #include "mlx5_rxtx.h"
  26 #include "mlx5_rx.h"
  27 #include "mlx5_autoconf.h"
  28
  29 /**
  30  * Get the interface index from device name.
  31  *
  32  * @param[in] dev
  33  *   Pointer to Ethernet device.
  34  *
  35  * @return
  36  *   Nonzero interface index on success, zero otherwise and rte_errno is set.
  37  */
  38 unsigned int
  39 mlx5_ifindex(const struct rte_eth_dev *dev)
  40 {
  41         struct mlx5_priv *priv = dev->data->dev_private;
  42         unsigned int ifindex;
  43
  44         MLX5_ASSERT(priv);
  45         MLX5_ASSERT(priv->if_index);
  46         if (priv->master && priv->sh->bond.ifindex > 0)
  47                 ifindex = priv->sh->bond.ifindex;
  48         else
  49                 ifindex = priv->if_index;
  50         if (!ifindex)
  51                 rte_errno = ENXIO;
  52         return ifindex;
  53 }
  54
  55 /**
  56  * DPDK callback for Ethernet device configuration.
  57  *
  58  * @param dev
  59  *   Pointer to Ethernet device structure.
  60  *
  61  * @return
  62  *   0 on success, a negative errno value otherwise and rte_errno is set.
  63  */
  64 int
  65 mlx5_dev_configure(struct rte_eth_dev *dev)
  66 {
  67         struct mlx5_priv *priv = dev->data->dev_private;
  68         unsigned int rxqs_n = dev->data->nb_rx_queues;
  69         unsigned int txqs_n = dev->data->nb_tx_queues;
  70         const uint8_t use_app_rss_key =
  71                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
  72         int ret = 0;
  73
  74         if (use_app_rss_key &&
  75             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
  76              MLX5_RSS_HASH_KEY_LEN)) {
  77                 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long",
  78                         dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN));
  79                 rte_errno = EINVAL;
  80                 return -rte_errno;
  81         }
  82         priv->rss_conf.rss_key =
  83                 mlx5_realloc(priv->rss_conf.rss_key, MLX5_MEM_RTE,
  84                             MLX5_RSS_HASH_KEY_LEN, 0, SOCKET_ID_ANY);
  85         if (!priv->rss_conf.rss_key) {
  86                 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)",
  87                         dev->data->port_id, rxqs_n);
  88                 rte_errno = ENOMEM;
  89                 return -rte_errno;
  90         }
  91
  92         if ((dev->data->dev_conf.txmode.offloads &
  93                         DEV_TX_OFFLOAD_SEND_ON_TIMESTAMP) &&
  94                         rte_mbuf_dyn_tx_timestamp_register(NULL, NULL) != 0) {
  95                 DRV_LOG(ERR, "port %u cannot register Tx timestamp field/flag",
  96                         dev->data->port_id);
  97                 return -rte_errno;
  98         }
  99         memcpy(priv->rss_conf.rss_key,
 100                use_app_rss_key ?
 101                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 102                rss_hash_default_key,
 103                MLX5_RSS_HASH_KEY_LEN);
 104         priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN;
 105         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 106         priv->rxqs = (void *)dev->data->rx_queues;
 107         priv->txqs = (void *)dev->data->tx_queues;
 108         if (txqs_n != priv->txqs_n) {
 109                 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u",
 110                         dev->data->port_id, priv->txqs_n, txqs_n);
 111                 priv->txqs_n = txqs_n;
 112         }
 113         if (rxqs_n > priv->config.ind_table_max_size) {
 114                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 115                         dev->data->port_id, rxqs_n);
 116                 rte_errno = EINVAL;
 117                 return -rte_errno;
 118         }
 119         if (rxqs_n != priv->rxqs_n) {
 120                 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 121                         dev->data->port_id, priv->rxqs_n, rxqs_n);
 122                 priv->rxqs_n = rxqs_n;
 123         }
 124         priv->skip_default_rss_reta = 0;
 125         ret = mlx5_proc_priv_init(dev);
 126         if (ret)
 127                 return ret;
 128         return 0;
 129 }
 130
 131 /**
 132  * Configure default RSS reta.
 133  *
 134  * @param dev
 135  *   Pointer to Ethernet device structure.
 136  *
 137  * @return
 138  *   0 on success, a negative errno value otherwise and rte_errno is set.
 139  */
 140 int
 141 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev)
 142 {
 143         struct mlx5_priv *priv = dev->data->dev_private;
 144         unsigned int rxqs_n = dev->data->nb_rx_queues;
 145         unsigned int i;
 146         unsigned int j;
 147         unsigned int reta_idx_n;
 148         int ret = 0;
 149         unsigned int *rss_queue_arr = NULL;
 150         unsigned int rss_queue_n = 0;
 151
 152         if (priv->skip_default_rss_reta)
 153                 return ret;
 154         rss_queue_arr = mlx5_malloc(0, rxqs_n * sizeof(unsigned int), 0,
 155                                     SOCKET_ID_ANY);
 156         if (!rss_queue_arr) {
 157                 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)",
 158                         dev->data->port_id, rxqs_n);
 159                 rte_errno = ENOMEM;
 160                 return -rte_errno;
 161         }
 162         for (i = 0, j = 0; i < rxqs_n; i++) {
 163                 struct mlx5_rxq_data *rxq_data;
 164                 struct mlx5_rxq_ctrl *rxq_ctrl;
 165
 166                 rxq_data = (*priv->rxqs)[i];
 167                 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq);
 168                 if (rxq_ctrl && rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD)
 169                         rss_queue_arr[j++] = i;
 170         }
 171         rss_queue_n = j;
 172         if (rss_queue_n > priv->config.ind_table_max_size) {
 173                 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)",
 174                         dev->data->port_id, rss_queue_n);
 175                 rte_errno = EINVAL;
 176                 mlx5_free(rss_queue_arr);
 177                 return -rte_errno;
 178         }
 179         DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u",
 180                 dev->data->port_id, priv->rxqs_n, rxqs_n);
 181         priv->rxqs_n = rxqs_n;
 182         /*
 183          * If the requested number of RX queues is not a power of two,
 184          * use the maximum indirection table size for better balancing.
 185          * The result is always rounded to the next power of two.
 186          */
 187         reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ?
 188                                 priv->config.ind_table_max_size :
 189                                 rss_queue_n));
 190         ret = mlx5_rss_reta_index_resize(dev, reta_idx_n);
 191         if (ret) {
 192                 mlx5_free(rss_queue_arr);
 193                 return ret;
 194         }
 195         /*
 196          * When the number of RX queues is not a power of two,
 197          * the remaining table entries are padded with reused WQs
 198          * and hashes are not spread uniformly.
 199          */
 200         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 201                 (*priv->reta_idx)[i] = rss_queue_arr[j];
 202                 if (++j == rss_queue_n)
 203                         j = 0;
 204         }
 205         mlx5_free(rss_queue_arr);
 206         return ret;
 207 }
 208
 209 /**
 210  * Sets default tuning parameters.
 211  *
 212  * @param dev
 213  *   Pointer to Ethernet device.
 214  * @param[out] info
 215  *   Info structure output buffer.
 216  */
 217 static void
 218 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 219 {
 220         struct mlx5_priv *priv = dev->data->dev_private;
 221
 222         /* Minimum CPU utilization. */
 223         info->default_rxportconf.ring_size = 256;
 224         info->default_txportconf.ring_size = 256;
 225         info->default_rxportconf.burst_size = MLX5_RX_DEFAULT_BURST;
 226         info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST;
 227         if ((priv->link_speed_capa & ETH_LINK_SPEED_200G) |
 228                 (priv->link_speed_capa & ETH_LINK_SPEED_100G)) {
 229                 info->default_rxportconf.nb_queues = 16;
 230                 info->default_txportconf.nb_queues = 16;
 231                 if (dev->data->nb_rx_queues > 2 ||
 232                     dev->data->nb_tx_queues > 2) {
 233                         /* Max Throughput. */
 234                         info->default_rxportconf.ring_size = 2048;
 235                         info->default_txportconf.ring_size = 2048;
 236                 }
 237         } else {
 238                 info->default_rxportconf.nb_queues = 8;
 239                 info->default_txportconf.nb_queues = 8;
 240                 if (dev->data->nb_rx_queues > 2 ||
 241                     dev->data->nb_tx_queues > 2) {
 242                         /* Max Throughput. */
 243                         info->default_rxportconf.ring_size = 4096;
 244                         info->default_txportconf.ring_size = 4096;
 245                 }
 246         }
 247 }
 248
 249 /**
 250  * Sets tx mbuf limiting parameters.
 251  *
 252  * @param dev
 253  *   Pointer to Ethernet device.
 254  * @param[out] info
 255  *   Info structure output buffer.
 256  */
 257 static void
 258 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 259 {
 260         struct mlx5_priv *priv = dev->data->dev_private;
 261         struct mlx5_dev_config *config = &priv->config;
 262         unsigned int inlen;
 263         uint16_t nb_max;
 264
 265         inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ?
 266                 MLX5_SEND_DEF_INLINE_LEN :
 267                 (unsigned int)config->txq_inline_max;
 268         MLX5_ASSERT(config->txq_inline_min >= 0);
 269         inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min);
 270         inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX +
 271                                MLX5_ESEG_MIN_INLINE_SIZE -
 272                                MLX5_WQE_CSEG_SIZE -
 273                                MLX5_WQE_ESEG_SIZE -
 274                                MLX5_WQE_DSEG_SIZE * 2);
 275         nb_max = (MLX5_WQE_SIZE_MAX +
 276                   MLX5_ESEG_MIN_INLINE_SIZE -
 277                   MLX5_WQE_CSEG_SIZE -
 278                   MLX5_WQE_ESEG_SIZE -
 279                   MLX5_WQE_DSEG_SIZE -
 280                   inlen) / MLX5_WSEG_SIZE;
 281         info->tx_desc_lim.nb_seg_max = nb_max;
 282         info->tx_desc_lim.nb_mtu_seg_max = nb_max;
 283 }
 284
 285 /**
 286  * DPDK callback to get information about the device.
 287  *
 288  * @param dev
 289  *   Pointer to Ethernet device structure.
 290  * @param[out] info
 291  *   Info structure output buffer.
 292  */
 293 int
 294 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 295 {
 296         struct mlx5_priv *priv = dev->data->dev_private;
 297         struct mlx5_dev_config *config = &priv->config;
 298         unsigned int max;
 299
 300         /* FIXME: we should ask the device for these values. */
 301         info->min_rx_bufsize = 32;
 302         info->max_rx_pktlen = 65536;
 303         info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE;
 304         /*
 305          * Since we need one CQ per QP, the limit is the minimum number
 306          * between the two values.
 307          */
 308         max = RTE_MIN(priv->sh->device_attr.max_cq,
 309                       priv->sh->device_attr.max_qp);
 310         /* max_rx_queues is uint16_t. */
 311         max = RTE_MIN(max, (unsigned int)UINT16_MAX);
 312         info->max_rx_queues = max;
 313         info->max_tx_queues = max;
 314         info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES;
 315         info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev);
 316         info->rx_seg_capa.max_nseg = MLX5_MAX_RXQ_NSEG;
 317         info->rx_seg_capa.multi_pools = !config->mprq.enabled;
 318         info->rx_seg_capa.offset_allowed = !config->mprq.enabled;
 319         info->rx_seg_capa.offset_align_log2 = 0;
 320         info->rx_offload_capa = (mlx5_get_rx_port_offloads() |
 321                                  info->rx_queue_offload_capa);
 322         info->tx_offload_capa = mlx5_get_tx_port_offloads(dev);
 323         info->if_index = mlx5_ifindex(dev);
 324         info->reta_size = priv->reta_idx_n ?
 325                 priv->reta_idx_n : config->ind_table_max_size;
 326         info->hash_key_size = MLX5_RSS_HASH_KEY_LEN;
 327         info->speed_capa = priv->link_speed_capa;
 328         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 329         mlx5_set_default_params(dev, info);
 330         mlx5_set_txlimit_params(dev, info);
 331         info->switch_info.name = dev->data->name;
 332         info->switch_info.domain_id = priv->domain_id;
 333         info->switch_info.port_id = priv->representor_id;
 334         if (priv->representor) {
 335                 uint16_t port_id;
 336
 337                 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 338                         struct mlx5_priv *opriv =
 339                                 rte_eth_devices[port_id].data->dev_private;
 340
 341                         if (!opriv ||
 342                             opriv->representor ||
 343                             opriv->sh != priv->sh ||
 344                             opriv->domain_id != priv->domain_id)
 345                                 continue;
 346                         /*
 347                          * Override switch name with that of the master
 348                          * device.
 349                          */
 350                         info->switch_info.name = opriv->dev_data->name;
 351                         break;
 352                 }
 353         }
 354         return 0;
 355 }
 356
 357 /**
 358  * Calculate representor ID from port switch info.
 359  *
 360  * Uint16 representor ID bits definition:
 361  *   pf: 2
 362  *   type: 2
 363  *   vf/sf: 12
 364  *
 365  * @param info
 366  *   Port switch info.
 367  * @param hpf_type
 368  *   Use this type if port is HPF.
 369  *
 370  * @return
 371  *   Encoded representor ID.
 372  */
 373 uint16_t
 374 mlx5_representor_id_encode(const struct mlx5_switch_info *info,
 375                            enum rte_eth_representor_type hpf_type)
 376 {
 377         enum rte_eth_representor_type type = RTE_ETH_REPRESENTOR_VF;
 378         uint16_t repr = info->port_name;
 379
 380         if (info->representor == 0)
 381                 return UINT16_MAX;
 382         if (info->name_type == MLX5_PHYS_PORT_NAME_TYPE_PFSF)
 383                 type = RTE_ETH_REPRESENTOR_SF;
 384         if (info->name_type == MLX5_PHYS_PORT_NAME_TYPE_PFHPF) {
 385                 type = hpf_type;
 386                 repr = UINT16_MAX;
 387         }
 388         return MLX5_REPRESENTOR_ID(info->pf_num, type, repr);
 389 }
 390
 391 /**
 392  * DPDK callback to get information about representor.
 393  *
 394  * Representor ID bits definition:
 395  *   vf/sf: 12
 396  *   type: 2
 397  *   pf: 2
 398  *
 399  * @param dev
 400  *   Pointer to Ethernet device structure.
 401  * @param[out] info
 402  *   Nullable info structure output buffer.
 403  *
 404  * @return
 405  *   negative on error, or the number of representor ranges.
 406  */
 407 int
 408 mlx5_representor_info_get(struct rte_eth_dev *dev,
 409                           struct rte_eth_representor_info *info)
 410 {
 411         struct mlx5_priv *priv = dev->data->dev_private;
 412         int n_type = 4; /* Representor types, VF, HPF@VF, SF and HPF@SF. */
 413         int n_pf = 2; /* Number of PFs. */
 414         int i = 0, pf;
 415
 416         if (info == NULL)
 417                 goto out;
 418         info->controller = 0;
 419         info->pf = priv->pf_bond >= 0 ? priv->pf_bond : 0;
 420         for (pf = 0; pf < n_pf; ++pf) {
 421                 /* VF range. */
 422                 info->ranges[i].type = RTE_ETH_REPRESENTOR_VF;
 423                 info->ranges[i].controller = 0;
 424                 info->ranges[i].pf = pf;
 425                 info->ranges[i].vf = 0;
 426                 info->ranges[i].id_base =
 427                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, 0);
 428                 info->ranges[i].id_end =
 429                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
 430                 snprintf(info->ranges[i].name,
 431                          sizeof(info->ranges[i].name), "pf%dvf", pf);
 432                 i++;
 433                 /* HPF range of VF type. */
 434                 info->ranges[i].type = RTE_ETH_REPRESENTOR_VF;
 435                 info->ranges[i].controller = 0;
 436                 info->ranges[i].pf = pf;
 437                 info->ranges[i].vf = UINT16_MAX;
 438                 info->ranges[i].id_base =
 439                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
 440                 info->ranges[i].id_end =
 441                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
 442                 snprintf(info->ranges[i].name,
 443                          sizeof(info->ranges[i].name), "pf%dvf", pf);
 444                 i++;
 445                 /* SF range. */
 446                 info->ranges[i].type = RTE_ETH_REPRESENTOR_SF;
 447                 info->ranges[i].controller = 0;
 448                 info->ranges[i].pf = pf;
 449                 info->ranges[i].vf = 0;
 450                 info->ranges[i].id_base =
 451                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, 0);
 452                 info->ranges[i].id_end =
 453                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
 454                 snprintf(info->ranges[i].name,
 455                          sizeof(info->ranges[i].name), "pf%dsf", pf);
 456                 i++;
 457                 /* HPF range of SF type. */
 458                 info->ranges[i].type = RTE_ETH_REPRESENTOR_SF;
 459                 info->ranges[i].controller = 0;
 460                 info->ranges[i].pf = pf;
 461                 info->ranges[i].vf = UINT16_MAX;
 462                 info->ranges[i].id_base =
 463                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
 464                 info->ranges[i].id_end =
 465                         MLX5_REPRESENTOR_ID(pf, info->ranges[i].type, -1);
 466                 snprintf(info->ranges[i].name,
 467                          sizeof(info->ranges[i].name), "pf%dsf", pf);
 468                 i++;
 469         }
 470 out:
 471         return n_type * n_pf;
 472 }
 473
 474 /**
 475  * Get firmware version of a device.
 476  *
 477  * @param dev
 478  *   Ethernet device port.
 479  * @param fw_ver
 480  *   String output allocated by caller.
 481  * @param fw_size
 482  *   Size of the output string, including terminating null byte.
 483  *
 484  * @return
 485  *   0 on success, or the size of the non truncated string if too big.
 486  */
 487 int
 488 mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size)
 489 {
 490         struct mlx5_priv *priv = dev->data->dev_private;
 491         struct mlx5_dev_attr *attr = &priv->sh->device_attr;
 492         size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1;
 493
 494         if (fw_size < size)
 495                 return size;
 496         if (fw_ver != NULL)
 497                 strlcpy(fw_ver, attr->fw_ver, fw_size);
 498         return 0;
 499 }
 500
 501 /**
 502  * Get supported packet types.
 503  *
 504  * @param dev
 505  *   Pointer to Ethernet device structure.
 506  *
 507  * @return
 508  *   A pointer to the supported Packet types array.
 509  */
 510 const uint32_t *
 511 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 512 {
 513         static const uint32_t ptypes[] = {
 514                 /* refers to rxq_cq_to_pkt_type() */
 515                 RTE_PTYPE_L2_ETHER,
 516                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 517                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 518                 RTE_PTYPE_L4_NONFRAG,
 519                 RTE_PTYPE_L4_FRAG,
 520                 RTE_PTYPE_L4_TCP,
 521                 RTE_PTYPE_L4_UDP,
 522                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 523                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 524                 RTE_PTYPE_INNER_L4_NONFRAG,
 525                 RTE_PTYPE_INNER_L4_FRAG,
 526                 RTE_PTYPE_INNER_L4_TCP,
 527                 RTE_PTYPE_INNER_L4_UDP,
 528                 RTE_PTYPE_UNKNOWN
 529         };
 530
 531         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 532             dev->rx_pkt_burst == mlx5_rx_burst_mprq ||
 533             dev->rx_pkt_burst == mlx5_rx_burst_vec ||
 534             dev->rx_pkt_burst == mlx5_rx_burst_mprq_vec)
 535                 return ptypes;
 536         return NULL;
 537 }
 538
 539 /**
 540  * DPDK callback to change the MTU.
 541  *
 542  * @param dev
 543  *   Pointer to Ethernet device structure.
 544  * @param in_mtu
 545  *   New MTU.
 546  *
 547  * @return
 548  *   0 on success, a negative errno value otherwise and rte_errno is set.
 549  */
 550 int
 551 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 552 {
 553         struct mlx5_priv *priv = dev->data->dev_private;
 554         uint16_t kern_mtu = 0;
 555         int ret;
 556
 557         ret = mlx5_get_mtu(dev, &kern_mtu);
 558         if (ret)
 559                 return ret;
 560         /* Set kernel interface MTU first. */
 561         ret = mlx5_set_mtu(dev, mtu);
 562         if (ret)
 563                 return ret;
 564         ret = mlx5_get_mtu(dev, &kern_mtu);
 565         if (ret)
 566                 return ret;
 567         if (kern_mtu == mtu) {
 568                 priv->mtu = mtu;
 569                 DRV_LOG(DEBUG, "port %u adapter MTU set to %u",
 570                         dev->data->port_id, mtu);
 571                 return 0;
 572         }
 573         rte_errno = EAGAIN;
 574         return -rte_errno;
 575 }
 576
 577 /**
 578  * Configure the RX function to use.
 579  *
 580  * @param dev
 581  *   Pointer to private data structure.
 582  *
 583  * @return
 584  *   Pointer to selected Rx burst function.
 585  */
 586 eth_rx_burst_t
 587 mlx5_select_rx_function(struct rte_eth_dev *dev)
 588 {
 589         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
 590
 591         MLX5_ASSERT(dev != NULL);
 592         if (mlx5_check_vec_rx_support(dev) > 0) {
 593                 if (mlx5_mprq_enabled(dev)) {
 594                         rx_pkt_burst = mlx5_rx_burst_mprq_vec;
 595                         DRV_LOG(DEBUG, "port %u selected vectorized"
 596                                 " MPRQ Rx function", dev->data->port_id);
 597                 } else {
 598                         rx_pkt_burst = mlx5_rx_burst_vec;
 599                         DRV_LOG(DEBUG, "port %u selected vectorized"
 600                                 " SPRQ Rx function", dev->data->port_id);
 601                 }
 602         } else if (mlx5_mprq_enabled(dev)) {
 603                 rx_pkt_burst = mlx5_rx_burst_mprq;
 604                 DRV_LOG(DEBUG, "port %u selected MPRQ Rx function",
 605                         dev->data->port_id);
 606         } else {
 607                 DRV_LOG(DEBUG, "port %u selected SPRQ Rx function",
 608                         dev->data->port_id);
 609         }
 610         return rx_pkt_burst;
 611 }
 612
 613 /**
 614  * Get the E-Switch parameters by port id.
 615  *
 616  * @param[in] port
 617  *   Device port id.
 618  * @param[in] valid
 619  *   Device port id is valid, skip check. This flag is useful
 620  *   when trials are performed from probing and device is not
 621  *   flagged as valid yet (in attaching process).
 622  * @param[out] es_domain_id
 623  *   E-Switch domain id.
 624  * @param[out] es_port_id
 625  *   The port id of the port in the E-Switch.
 626  *
 627  * @return
 628  *   pointer to device private data structure containing data needed
 629  *   on success, NULL otherwise and rte_errno is set.
 630  */
 631 struct mlx5_priv *
 632 mlx5_port_to_eswitch_info(uint16_t port, bool valid)
 633 {
 634         struct rte_eth_dev *dev;
 635         struct mlx5_priv *priv;
 636
 637         if (port >= RTE_MAX_ETHPORTS) {
 638                 rte_errno = EINVAL;
 639                 return NULL;
 640         }
 641         if (!valid && !rte_eth_dev_is_valid_port(port)) {
 642                 rte_errno = ENODEV;
 643                 return NULL;
 644         }
 645         dev = &rte_eth_devices[port];
 646         priv = dev->data->dev_private;
 647         if (!(priv->representor || priv->master)) {
 648                 rte_errno = EINVAL;
 649                 return NULL;
 650         }
 651         return priv;
 652 }
 653
 654 /**
 655  * Get the E-Switch parameters by device instance.
 656  *
 657  * @param[in] port
 658  *   Device port id.
 659  * @param[out] es_domain_id
 660  *   E-Switch domain id.
 661  * @param[out] es_port_id
 662  *   The port id of the port in the E-Switch.
 663  *
 664  * @return
 665  *   pointer to device private data structure containing data needed
 666  *   on success, NULL otherwise and rte_errno is set.
 667  */
 668 struct mlx5_priv *
 669 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev)
 670 {
 671         struct mlx5_priv *priv;
 672
 673         priv = dev->data->dev_private;
 674         if (!(priv->representor || priv->master)) {
 675                 rte_errno = EINVAL;
 676                 return NULL;
 677         }
 678         return priv;
 679 }
 680
 681 /**
 682  * DPDK callback to retrieve hairpin capabilities.
 683  *
 684  * @param dev
 685  *   Pointer to Ethernet device structure.
 686  * @param[out] cap
 687  *   Storage for hairpin capability data.
 688  *
 689  * @return
 690  *   0 on success, a negative errno value otherwise and rte_errno is set.
 691  */
 692 int
 693 mlx5_hairpin_cap_get(struct rte_eth_dev *dev, struct rte_eth_hairpin_cap *cap)
 694 {
 695         struct mlx5_priv *priv = dev->data->dev_private;
 696         struct mlx5_dev_config *config = &priv->config;
 697
 698         if (!priv->sh->devx || !config->dest_tir || !config->dv_flow_en) {
 699                 rte_errno = ENOTSUP;
 700                 return -rte_errno;
 701         }
 702         cap->max_nb_queues = UINT16_MAX;
 703         cap->max_rx_2_tx = 1;
 704         cap->max_tx_2_rx = 1;
 705         cap->max_nb_desc = 8192;
 706         return 0;
 707 }