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 unsigned int i; 387 unsigned int j; 388 unsigned int reta_idx_n; 389 const uint8_t use_app_rss_key = 390 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 391 int ret = 0; 392 unsigned int lro_on = mlx5_lro_on(dev); 393 394 if (use_app_rss_key && 395 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 396 MLX5_RSS_HASH_KEY_LEN)) { 397 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long", 398 dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN)); 399 rte_errno = EINVAL; 400 return -rte_errno; 401 } 402 priv->rss_conf.rss_key = 403 rte_realloc(priv->rss_conf.rss_key, 404 MLX5_RSS_HASH_KEY_LEN, 0); 405 if (!priv->rss_conf.rss_key) { 406 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)", 407 dev->data->port_id, rxqs_n); 408 rte_errno = ENOMEM; 409 return -rte_errno; 410 } 411 memcpy(priv->rss_conf.rss_key, 412 use_app_rss_key ? 413 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 414 rss_hash_default_key, 415 MLX5_RSS_HASH_KEY_LEN); 416 priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN; 417 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 418 priv->rxqs = (void *)dev->data->rx_queues; 419 priv->txqs = (void *)dev->data->tx_queues; 420 if (txqs_n != priv->txqs_n) { 421 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u", 422 dev->data->port_id, priv->txqs_n, txqs_n); 423 priv->txqs_n = txqs_n; 424 } 425 if (rxqs_n > priv->config.ind_table_max_size) { 426 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", 427 dev->data->port_id, rxqs_n); 428 rte_errno = EINVAL; 429 return -rte_errno; 430 } 431 if (rxqs_n != priv->rxqs_n) { 432 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", 433 dev->data->port_id, priv->rxqs_n, rxqs_n); 434 priv->rxqs_n = rxqs_n; 435 /* 436 * If the requested number of RX queues is not a power of two, 437 * use the maximum indirection table size for better balancing. 438 * The result is always rounded to the next power of two. 439 */ 440 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 441 priv->config.ind_table_max_size : 442 rxqs_n)); 443 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); 444 if (ret) 445 return ret; 446 /* 447 * When the number of RX queues is not a power of two, 448 * the remaining table entries are padded with reused WQs 449 * and hashes are not spread uniformly. 450 */ 451 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 452 (*priv->reta_idx)[i] = j; 453 if (++j == rxqs_n) 454 j = 0; 455 } 456 } 457 if (lro_on && priv->config.cqe_comp) { 458 /* CQE compressing is not supported for LRO CQEs. */ 459 DRV_LOG(WARNING, "Rx CQE compression isn't supported with LRO"); 460 priv->config.cqe_comp = 0; 461 } 462 ret = mlx5_proc_priv_init(dev); 463 if (ret) 464 return ret; 465 return 0; 466 } 467 468 /** 469 * Sets default tuning parameters. 470 * 471 * @param dev 472 * Pointer to Ethernet device. 473 * @param[out] info 474 * Info structure output buffer. 475 */ 476 static void 477 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 478 { 479 struct mlx5_priv *priv = dev->data->dev_private; 480 481 /* Minimum CPU utilization. */ 482 info->default_rxportconf.ring_size = 256; 483 info->default_txportconf.ring_size = 256; 484 info->default_rxportconf.burst_size = 64; 485 info->default_txportconf.burst_size = 64; 486 if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { 487 info->default_rxportconf.nb_queues = 16; 488 info->default_txportconf.nb_queues = 16; 489 if (dev->data->nb_rx_queues > 2 || 490 dev->data->nb_tx_queues > 2) { 491 /* Max Throughput. */ 492 info->default_rxportconf.ring_size = 2048; 493 info->default_txportconf.ring_size = 2048; 494 } 495 } else { 496 info->default_rxportconf.nb_queues = 8; 497 info->default_txportconf.nb_queues = 8; 498 if (dev->data->nb_rx_queues > 2 || 499 dev->data->nb_tx_queues > 2) { 500 /* Max Throughput. */ 501 info->default_rxportconf.ring_size = 4096; 502 info->default_txportconf.ring_size = 4096; 503 } 504 } 505 } 506 507 /** 508 * Sets tx mbuf limiting parameters. 509 * 510 * @param dev 511 * Pointer to Ethernet device. 512 * @param[out] info 513 * Info structure output buffer. 514 */ 515 static void 516 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 517 { 518 struct mlx5_priv *priv = dev->data->dev_private; 519 struct mlx5_dev_config *config = &priv->config; 520 unsigned int inlen; 521 uint16_t nb_max; 522 523 inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ? 524 MLX5_SEND_DEF_INLINE_LEN : 525 (unsigned int)config->txq_inline_max; 526 assert(config->txq_inline_min >= 0); 527 inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min); 528 inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX + 529 MLX5_ESEG_MIN_INLINE_SIZE - 530 MLX5_WQE_CSEG_SIZE - 531 MLX5_WQE_ESEG_SIZE - 532 MLX5_WQE_DSEG_SIZE * 2); 533 nb_max = (MLX5_WQE_SIZE_MAX + 534 MLX5_ESEG_MIN_INLINE_SIZE - 535 MLX5_WQE_CSEG_SIZE - 536 MLX5_WQE_ESEG_SIZE - 537 MLX5_WQE_DSEG_SIZE - 538 inlen) / MLX5_WSEG_SIZE; 539 info->tx_desc_lim.nb_seg_max = nb_max; 540 info->tx_desc_lim.nb_mtu_seg_max = nb_max; 541 } 542 543 /** 544 * DPDK callback to get information about the device. 545 * 546 * @param dev 547 * Pointer to Ethernet device structure. 548 * @param[out] info 549 * Info structure output buffer. 550 */ 551 void 552 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 553 { 554 struct mlx5_priv *priv = dev->data->dev_private; 555 struct mlx5_dev_config *config = &priv->config; 556 unsigned int max; 557 558 /* FIXME: we should ask the device for these values. */ 559 info->min_rx_bufsize = 32; 560 info->max_rx_pktlen = 65536; 561 /* 562 * Since we need one CQ per QP, the limit is the minimum number 563 * between the two values. 564 */ 565 max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq, 566 priv->sh->device_attr.orig_attr.max_qp); 567 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 568 if (max >= 65535) 569 max = 65535; 570 info->max_rx_queues = max; 571 info->max_tx_queues = max; 572 info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES; 573 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev); 574 info->rx_offload_capa = (mlx5_get_rx_port_offloads(dev) | 575 info->rx_queue_offload_capa); 576 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev); 577 info->if_index = mlx5_ifindex(dev); 578 info->reta_size = priv->reta_idx_n ? 579 priv->reta_idx_n : config->ind_table_max_size; 580 info->hash_key_size = MLX5_RSS_HASH_KEY_LEN; 581 info->speed_capa = priv->link_speed_capa; 582 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; 583 mlx5_set_default_params(dev, info); 584 mlx5_set_txlimit_params(dev, info); 585 info->switch_info.name = dev->data->name; 586 info->switch_info.domain_id = priv->domain_id; 587 info->switch_info.port_id = priv->representor_id; 588 if (priv->representor) { 589 unsigned int i = mlx5_dev_to_port_id(dev->device, NULL, 0); 590 uint16_t port_id[i]; 591 592 i = RTE_MIN(mlx5_dev_to_port_id(dev->device, port_id, i), i); 593 while (i--) { 594 struct mlx5_priv *opriv = 595 rte_eth_devices[port_id[i]].data->dev_private; 596 597 if (!opriv || 598 opriv->representor || 599 opriv->domain_id != priv->domain_id) 600 continue; 601 /* 602 * Override switch name with that of the master 603 * device. 604 */ 605 info->switch_info.name = opriv->dev_data->name; 606 break; 607 } 608 } 609 } 610 611 /** 612 * Get device current raw clock counter 613 * 614 * @param dev 615 * Pointer to Ethernet device structure. 616 * @param[out] time 617 * Current raw clock counter of the device. 618 * 619 * @return 620 * 0 if the clock has correctly been read 621 * The value of errno in case of error 622 */ 623 int 624 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock) 625 { 626 struct mlx5_priv *priv = dev->data->dev_private; 627 struct ibv_context *ctx = priv->sh->ctx; 628 struct ibv_values_ex values; 629 int err = 0; 630 631 values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK; 632 err = mlx5_glue->query_rt_values_ex(ctx, &values); 633 if (err != 0) { 634 DRV_LOG(WARNING, "Could not query the clock !"); 635 return err; 636 } 637 *clock = values.raw_clock.tv_nsec; 638 return 0; 639 } 640 641 /** 642 * Get firmware version of a device. 643 * 644 * @param dev 645 * Ethernet device port. 646 * @param fw_ver 647 * String output allocated by caller. 648 * @param fw_size 649 * Size of the output string, including terminating null byte. 650 * 651 * @return 652 * 0 on success, or the size of the non truncated string if too big. 653 */ 654 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) 655 { 656 struct mlx5_priv *priv = dev->data->dev_private; 657 struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr; 658 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1; 659 660 if (fw_size < size) 661 return size; 662 if (fw_ver != NULL) 663 strlcpy(fw_ver, attr->fw_ver, fw_size); 664 return 0; 665 } 666 667 /** 668 * Get supported packet types. 669 * 670 * @param dev 671 * Pointer to Ethernet device structure. 672 * 673 * @return 674 * A pointer to the supported Packet types array. 675 */ 676 const uint32_t * 677 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 678 { 679 static const uint32_t ptypes[] = { 680 /* refers to rxq_cq_to_pkt_type() */ 681 RTE_PTYPE_L2_ETHER, 682 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 683 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 684 RTE_PTYPE_L4_NONFRAG, 685 RTE_PTYPE_L4_FRAG, 686 RTE_PTYPE_L4_TCP, 687 RTE_PTYPE_L4_UDP, 688 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 689 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 690 RTE_PTYPE_INNER_L4_NONFRAG, 691 RTE_PTYPE_INNER_L4_FRAG, 692 RTE_PTYPE_INNER_L4_TCP, 693 RTE_PTYPE_INNER_L4_UDP, 694 RTE_PTYPE_UNKNOWN 695 }; 696 697 if (dev->rx_pkt_burst == mlx5_rx_burst || 698 dev->rx_pkt_burst == mlx5_rx_burst_mprq || 699 dev->rx_pkt_burst == mlx5_rx_burst_vec) 700 return ptypes; 701 return NULL; 702 } 703 704 /** 705 * Retrieve the master device for representor in the same switch domain. 706 * 707 * @param dev 708 * Pointer to representor Ethernet device structure. 709 * 710 * @return 711 * Master device structure on success, NULL otherwise. 712 */ 713 714 static struct rte_eth_dev * 715 mlx5_find_master_dev(struct rte_eth_dev *dev) 716 { 717 struct mlx5_priv *priv; 718 uint16_t port_id; 719 uint16_t domain_id; 720 721 priv = dev->data->dev_private; 722 domain_id = priv->domain_id; 723 assert(priv->representor); 724 RTE_ETH_FOREACH_DEV_OF(port_id, dev->device) { 725 priv = rte_eth_devices[port_id].data->dev_private; 726 if (priv && 727 priv->master && 728 priv->domain_id == domain_id) 729 return &rte_eth_devices[port_id]; 730 } 731 return NULL; 732 } 733 734 /** 735 * DPDK callback to retrieve physical link information. 736 * 737 * @param dev 738 * Pointer to Ethernet device structure. 739 * @param[out] link 740 * Storage for current link status. 741 * 742 * @return 743 * 0 on success, a negative errno value otherwise and rte_errno is set. 744 */ 745 static int 746 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, 747 struct rte_eth_link *link) 748 { 749 struct mlx5_priv *priv = dev->data->dev_private; 750 struct ethtool_cmd edata = { 751 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 752 }; 753 struct ifreq ifr; 754 struct rte_eth_link dev_link; 755 int link_speed = 0; 756 int ret; 757 758 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 759 if (ret) { 760 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 761 dev->data->port_id, strerror(rte_errno)); 762 return ret; 763 } 764 dev_link = (struct rte_eth_link) { 765 .link_status = ((ifr.ifr_flags & IFF_UP) && 766 (ifr.ifr_flags & IFF_RUNNING)), 767 }; 768 ifr = (struct ifreq) { 769 .ifr_data = (void *)&edata, 770 }; 771 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 772 if (ret) { 773 if (ret == -ENOTSUP && priv->representor) { 774 struct rte_eth_dev *master; 775 776 /* 777 * For representors we can try to inherit link 778 * settings from the master device. Actually 779 * link settings do not make a lot of sense 780 * for representors due to missing physical 781 * link. The old kernel drivers supported 782 * emulated settings query for representors, 783 * the new ones do not, so we have to add 784 * this code for compatibility issues. 785 */ 786 master = mlx5_find_master_dev(dev); 787 if (master) { 788 ifr = (struct ifreq) { 789 .ifr_data = (void *)&edata, 790 }; 791 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 792 } 793 } 794 if (ret) { 795 DRV_LOG(WARNING, 796 "port %u ioctl(SIOCETHTOOL," 797 " ETHTOOL_GSET) failed: %s", 798 dev->data->port_id, strerror(rte_errno)); 799 return ret; 800 } 801 } 802 link_speed = ethtool_cmd_speed(&edata); 803 if (link_speed == -1) 804 dev_link.link_speed = ETH_SPEED_NUM_NONE; 805 else 806 dev_link.link_speed = link_speed; 807 priv->link_speed_capa = 0; 808 if (edata.supported & SUPPORTED_Autoneg) 809 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 810 if (edata.supported & (SUPPORTED_1000baseT_Full | 811 SUPPORTED_1000baseKX_Full)) 812 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 813 if (edata.supported & SUPPORTED_10000baseKR_Full) 814 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 815 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 816 SUPPORTED_40000baseCR4_Full | 817 SUPPORTED_40000baseSR4_Full | 818 SUPPORTED_40000baseLR4_Full)) 819 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 820 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 821 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 822 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 823 ETH_LINK_SPEED_FIXED); 824 if (((dev_link.link_speed && !dev_link.link_status) || 825 (!dev_link.link_speed && dev_link.link_status))) { 826 rte_errno = EAGAIN; 827 return -rte_errno; 828 } 829 *link = dev_link; 830 return 0; 831 } 832 833 /** 834 * Retrieve physical link information (unlocked version using new ioctl). 835 * 836 * @param dev 837 * Pointer to Ethernet device structure. 838 * @param[out] link 839 * Storage for current link status. 840 * 841 * @return 842 * 0 on success, a negative errno value otherwise and rte_errno is set. 843 */ 844 static int 845 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, 846 struct rte_eth_link *link) 847 848 { 849 struct mlx5_priv *priv = dev->data->dev_private; 850 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 851 struct ifreq ifr; 852 struct rte_eth_link dev_link; 853 struct rte_eth_dev *master = NULL; 854 uint64_t sc; 855 int ret; 856 857 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 858 if (ret) { 859 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 860 dev->data->port_id, strerror(rte_errno)); 861 return ret; 862 } 863 dev_link = (struct rte_eth_link) { 864 .link_status = ((ifr.ifr_flags & IFF_UP) && 865 (ifr.ifr_flags & IFF_RUNNING)), 866 }; 867 ifr = (struct ifreq) { 868 .ifr_data = (void *)&gcmd, 869 }; 870 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 871 if (ret) { 872 if (ret == -ENOTSUP && priv->representor) { 873 /* 874 * For representors we can try to inherit link 875 * settings from the master device. Actually 876 * link settings do not make a lot of sense 877 * for representors due to missing physical 878 * link. The old kernel drivers supported 879 * emulated settings query for representors, 880 * the new ones do not, so we have to add 881 * this code for compatibility issues. 882 */ 883 master = mlx5_find_master_dev(dev); 884 if (master) { 885 ifr = (struct ifreq) { 886 .ifr_data = (void *)&gcmd, 887 }; 888 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 889 } 890 } 891 if (ret) { 892 DRV_LOG(DEBUG, 893 "port %u ioctl(SIOCETHTOOL," 894 " ETHTOOL_GLINKSETTINGS) failed: %s", 895 dev->data->port_id, strerror(rte_errno)); 896 return ret; 897 } 898 899 } 900 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 901 902 alignas(struct ethtool_link_settings) 903 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 904 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 905 struct ethtool_link_settings *ecmd = (void *)data; 906 907 *ecmd = gcmd; 908 ifr.ifr_data = (void *)ecmd; 909 ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr); 910 if (ret) { 911 DRV_LOG(DEBUG, 912 "port %u ioctl(SIOCETHTOOL," 913 "ETHTOOL_GLINKSETTINGS) failed: %s", 914 dev->data->port_id, strerror(rte_errno)); 915 return ret; 916 } 917 dev_link.link_speed = ecmd->speed; 918 sc = ecmd->link_mode_masks[0] | 919 ((uint64_t)ecmd->link_mode_masks[1] << 32); 920 priv->link_speed_capa = 0; 921 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 922 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 923 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 924 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 925 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 926 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 927 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 928 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 929 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 930 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 931 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 932 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 933 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 934 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 935 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 936 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 937 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 938 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 939 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 940 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 941 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 942 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 943 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 944 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 945 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 946 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 947 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 948 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 949 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 950 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 951 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 952 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 953 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 954 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 955 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 956 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 957 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 958 ETH_LINK_SPEED_FIXED); 959 if (((dev_link.link_speed && !dev_link.link_status) || 960 (!dev_link.link_speed && dev_link.link_status))) { 961 rte_errno = EAGAIN; 962 return -rte_errno; 963 } 964 *link = dev_link; 965 return 0; 966 } 967 968 /** 969 * DPDK callback to retrieve physical link information. 970 * 971 * @param dev 972 * Pointer to Ethernet device structure. 973 * @param wait_to_complete 974 * Wait for request completion. 975 * 976 * @return 977 * 0 if link status was not updated, positive if it was, a negative errno 978 * value otherwise and rte_errno is set. 979 */ 980 int 981 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 982 { 983 int ret; 984 struct rte_eth_link dev_link; 985 time_t start_time = time(NULL); 986 987 do { 988 ret = mlx5_link_update_unlocked_gs(dev, &dev_link); 989 if (ret == -ENOTSUP) 990 ret = mlx5_link_update_unlocked_gset(dev, &dev_link); 991 if (ret == 0) 992 break; 993 /* Handle wait to complete situation. */ 994 if (wait_to_complete && ret == -EAGAIN) { 995 if (abs((int)difftime(time(NULL), start_time)) < 996 MLX5_LINK_STATUS_TIMEOUT) { 997 usleep(0); 998 continue; 999 } else { 1000 rte_errno = EBUSY; 1001 return -rte_errno; 1002 } 1003 } else if (ret < 0) { 1004 return ret; 1005 } 1006 } while (wait_to_complete); 1007 ret = !!memcmp(&dev->data->dev_link, &dev_link, 1008 sizeof(struct rte_eth_link)); 1009 dev->data->dev_link = dev_link; 1010 return ret; 1011 } 1012 1013 /** 1014 * DPDK callback to change the MTU. 1015 * 1016 * @param dev 1017 * Pointer to Ethernet device structure. 1018 * @param in_mtu 1019 * New MTU. 1020 * 1021 * @return 1022 * 0 on success, a negative errno value otherwise and rte_errno is set. 1023 */ 1024 int 1025 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 1026 { 1027 struct mlx5_priv *priv = dev->data->dev_private; 1028 uint16_t kern_mtu = 0; 1029 int ret; 1030 1031 ret = mlx5_get_mtu(dev, &kern_mtu); 1032 if (ret) 1033 return ret; 1034 /* Set kernel interface MTU first. */ 1035 ret = mlx5_set_mtu(dev, mtu); 1036 if (ret) 1037 return ret; 1038 ret = mlx5_get_mtu(dev, &kern_mtu); 1039 if (ret) 1040 return ret; 1041 if (kern_mtu == mtu) { 1042 priv->mtu = mtu; 1043 DRV_LOG(DEBUG, "port %u adapter MTU set to %u", 1044 dev->data->port_id, mtu); 1045 return 0; 1046 } 1047 rte_errno = EAGAIN; 1048 return -rte_errno; 1049 } 1050 1051 /** 1052 * DPDK callback to get flow control status. 1053 * 1054 * @param dev 1055 * Pointer to Ethernet device structure. 1056 * @param[out] fc_conf 1057 * Flow control output buffer. 1058 * 1059 * @return 1060 * 0 on success, a negative errno value otherwise and rte_errno is set. 1061 */ 1062 int 1063 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1064 { 1065 struct ifreq ifr; 1066 struct ethtool_pauseparam ethpause = { 1067 .cmd = ETHTOOL_GPAUSEPARAM 1068 }; 1069 int ret; 1070 1071 ifr.ifr_data = (void *)ðpause; 1072 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1073 if (ret) { 1074 DRV_LOG(WARNING, 1075 "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:" 1076 " %s", 1077 dev->data->port_id, strerror(rte_errno)); 1078 return ret; 1079 } 1080 fc_conf->autoneg = ethpause.autoneg; 1081 if (ethpause.rx_pause && ethpause.tx_pause) 1082 fc_conf->mode = RTE_FC_FULL; 1083 else if (ethpause.rx_pause) 1084 fc_conf->mode = RTE_FC_RX_PAUSE; 1085 else if (ethpause.tx_pause) 1086 fc_conf->mode = RTE_FC_TX_PAUSE; 1087 else 1088 fc_conf->mode = RTE_FC_NONE; 1089 return 0; 1090 } 1091 1092 /** 1093 * DPDK callback to modify flow control parameters. 1094 * 1095 * @param dev 1096 * Pointer to Ethernet device structure. 1097 * @param[in] fc_conf 1098 * Flow control parameters. 1099 * 1100 * @return 1101 * 0 on success, a negative errno value otherwise and rte_errno is set. 1102 */ 1103 int 1104 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1105 { 1106 struct ifreq ifr; 1107 struct ethtool_pauseparam ethpause = { 1108 .cmd = ETHTOOL_SPAUSEPARAM 1109 }; 1110 int ret; 1111 1112 ifr.ifr_data = (void *)ðpause; 1113 ethpause.autoneg = fc_conf->autoneg; 1114 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1115 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1116 ethpause.rx_pause = 1; 1117 else 1118 ethpause.rx_pause = 0; 1119 1120 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1121 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1122 ethpause.tx_pause = 1; 1123 else 1124 ethpause.tx_pause = 0; 1125 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1126 if (ret) { 1127 DRV_LOG(WARNING, 1128 "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1129 " failed: %s", 1130 dev->data->port_id, strerror(rte_errno)); 1131 return ret; 1132 } 1133 return 0; 1134 } 1135 1136 /** 1137 * Get PCI information from struct ibv_device. 1138 * 1139 * @param device 1140 * Pointer to Ethernet device structure. 1141 * @param[out] pci_addr 1142 * PCI bus address output buffer. 1143 * 1144 * @return 1145 * 0 on success, a negative errno value otherwise and rte_errno is set. 1146 */ 1147 int 1148 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1149 struct rte_pci_addr *pci_addr) 1150 { 1151 FILE *file; 1152 char line[32]; 1153 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1154 1155 file = fopen(path, "rb"); 1156 if (file == NULL) { 1157 rte_errno = errno; 1158 return -rte_errno; 1159 } 1160 while (fgets(line, sizeof(line), file) == line) { 1161 size_t len = strlen(line); 1162 int ret; 1163 1164 /* Truncate long lines. */ 1165 if (len == (sizeof(line) - 1)) 1166 while (line[(len - 1)] != '\n') { 1167 ret = fgetc(file); 1168 if (ret == EOF) 1169 break; 1170 line[(len - 1)] = ret; 1171 } 1172 /* Extract information. */ 1173 if (sscanf(line, 1174 "PCI_SLOT_NAME=" 1175 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1176 &pci_addr->domain, 1177 &pci_addr->bus, 1178 &pci_addr->devid, 1179 &pci_addr->function) == 4) { 1180 ret = 0; 1181 break; 1182 } 1183 } 1184 fclose(file); 1185 return 0; 1186 } 1187 1188 /** 1189 * Handle asynchronous removal event for entire multiport device. 1190 * 1191 * @param sh 1192 * Infiniband device shared context. 1193 */ 1194 static void 1195 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh) 1196 { 1197 uint32_t i; 1198 1199 for (i = 0; i < sh->max_port; ++i) { 1200 struct rte_eth_dev *dev; 1201 1202 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) { 1203 /* 1204 * Or not existing port either no 1205 * handler installed for this port. 1206 */ 1207 continue; 1208 } 1209 dev = &rte_eth_devices[sh->port[i].ih_port_id]; 1210 assert(dev); 1211 if (dev->data->dev_conf.intr_conf.rmv) 1212 _rte_eth_dev_callback_process 1213 (dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1214 } 1215 } 1216 1217 /** 1218 * Handle shared asynchronous events the NIC (removal event 1219 * and link status change). Supports multiport IB device. 1220 * 1221 * @param cb_arg 1222 * Callback argument. 1223 */ 1224 void 1225 mlx5_dev_interrupt_handler(void *cb_arg) 1226 { 1227 struct mlx5_ibv_shared *sh = cb_arg; 1228 struct ibv_async_event event; 1229 1230 /* Read all message from the IB device and acknowledge them. */ 1231 for (;;) { 1232 struct rte_eth_dev *dev; 1233 uint32_t tmp; 1234 1235 if (mlx5_glue->get_async_event(sh->ctx, &event)) 1236 break; 1237 /* Retrieve and check IB port index. */ 1238 tmp = (uint32_t)event.element.port_num; 1239 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) { 1240 /* 1241 * The DEVICE_FATAL event is called once for 1242 * entire device without port specifying. 1243 * We should notify all existing ports. 1244 */ 1245 mlx5_glue->ack_async_event(&event); 1246 mlx5_dev_interrupt_device_fatal(sh); 1247 continue; 1248 } 1249 assert(tmp && (tmp <= sh->max_port)); 1250 if (!tmp) { 1251 /* Unsupported devive level event. */ 1252 mlx5_glue->ack_async_event(&event); 1253 DRV_LOG(DEBUG, 1254 "unsupported common event (type %d)", 1255 event.event_type); 1256 continue; 1257 } 1258 if (tmp > sh->max_port) { 1259 /* Invalid IB port index. */ 1260 mlx5_glue->ack_async_event(&event); 1261 DRV_LOG(DEBUG, 1262 "cannot handle an event (type %d)" 1263 "due to invalid IB port index (%u)", 1264 event.event_type, tmp); 1265 continue; 1266 } 1267 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) { 1268 /* No handler installed. */ 1269 mlx5_glue->ack_async_event(&event); 1270 DRV_LOG(DEBUG, 1271 "cannot handle an event (type %d)" 1272 "due to no handler installed for port %u", 1273 event.event_type, tmp); 1274 continue; 1275 } 1276 /* Retrieve ethernet device descriptor. */ 1277 tmp = sh->port[tmp - 1].ih_port_id; 1278 dev = &rte_eth_devices[tmp]; 1279 assert(dev); 1280 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1281 event.event_type == IBV_EVENT_PORT_ERR) && 1282 dev->data->dev_conf.intr_conf.lsc) { 1283 mlx5_glue->ack_async_event(&event); 1284 if (mlx5_link_update(dev, 0) == -EAGAIN) { 1285 usleep(0); 1286 continue; 1287 } 1288 _rte_eth_dev_callback_process 1289 (dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1290 continue; 1291 } 1292 DRV_LOG(DEBUG, 1293 "port %u cannot handle an unknown event (type %d)", 1294 dev->data->port_id, event.event_type); 1295 mlx5_glue->ack_async_event(&event); 1296 } 1297 } 1298 1299 /* 1300 * Unregister callback handler safely. The handler may be active 1301 * while we are trying to unregister it, in this case code -EAGAIN 1302 * is returned by rte_intr_callback_unregister(). This routine checks 1303 * the return code and tries to unregister handler again. 1304 * 1305 * @param handle 1306 * interrupt handle 1307 * @param cb_fn 1308 * pointer to callback routine 1309 * @cb_arg 1310 * opaque callback parameter 1311 */ 1312 void 1313 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle, 1314 rte_intr_callback_fn cb_fn, void *cb_arg) 1315 { 1316 /* 1317 * Try to reduce timeout management overhead by not calling 1318 * the timer related routines on the first iteration. If the 1319 * unregistering succeeds on first call there will be no 1320 * timer calls at all. 1321 */ 1322 uint64_t twait = 0; 1323 uint64_t start = 0; 1324 1325 do { 1326 int ret; 1327 1328 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg); 1329 if (ret >= 0) 1330 return; 1331 if (ret != -EAGAIN) { 1332 DRV_LOG(INFO, "failed to unregister interrupt" 1333 " handler (error: %d)", ret); 1334 assert(false); 1335 return; 1336 } 1337 if (twait) { 1338 struct timespec onems; 1339 1340 /* Wait one millisecond and try again. */ 1341 onems.tv_sec = 0; 1342 onems.tv_nsec = NS_PER_S / MS_PER_S; 1343 nanosleep(&onems, 0); 1344 /* Check whether one second elapsed. */ 1345 if ((rte_get_timer_cycles() - start) <= twait) 1346 continue; 1347 } else { 1348 /* 1349 * We get the amount of timer ticks for one second. 1350 * If this amount elapsed it means we spent one 1351 * second in waiting. This branch is executed once 1352 * on first iteration. 1353 */ 1354 twait = rte_get_timer_hz(); 1355 assert(twait); 1356 } 1357 /* 1358 * Timeout elapsed, show message (once a second) and retry. 1359 * We have no other acceptable option here, if we ignore 1360 * the unregistering return code the handler will not 1361 * be unregistered, fd will be closed and we may get the 1362 * crush. Hanging and messaging in the loop seems not to be 1363 * the worst choice. 1364 */ 1365 DRV_LOG(INFO, "Retrying to unregister interrupt handler"); 1366 start = rte_get_timer_cycles(); 1367 } while (true); 1368 } 1369 1370 /** 1371 * Handle DEVX interrupts from the NIC. 1372 * This function is probably called from the DPDK host thread. 1373 * 1374 * @param cb_arg 1375 * Callback argument. 1376 */ 1377 void 1378 mlx5_dev_interrupt_handler_devx(void *cb_arg) 1379 { 1380 #ifndef HAVE_IBV_DEVX_ASYNC 1381 (void)cb_arg; 1382 return; 1383 #else 1384 struct mlx5_ibv_shared *sh = cb_arg; 1385 union { 1386 struct mlx5dv_devx_async_cmd_hdr cmd_resp; 1387 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) + 1388 MLX5_ST_SZ_BYTES(traffic_counter) + 1389 sizeof(struct mlx5dv_devx_async_cmd_hdr)]; 1390 } out; 1391 uint8_t *buf = out.buf + sizeof(out.cmd_resp); 1392 1393 while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp, 1394 &out.cmd_resp, 1395 sizeof(out.buf))) 1396 mlx5_flow_async_pool_query_handle 1397 (sh, (uint64_t)out.cmd_resp.wr_id, 1398 mlx5_devx_get_out_command_status(buf)); 1399 #endif /* HAVE_IBV_DEVX_ASYNC */ 1400 } 1401 1402 /** 1403 * Uninstall shared asynchronous device events handler. 1404 * This function is implemented to support event sharing 1405 * between multiple ports of single IB device. 1406 * 1407 * @param dev 1408 * Pointer to Ethernet device. 1409 */ 1410 static void 1411 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) 1412 { 1413 struct mlx5_priv *priv = dev->data->dev_private; 1414 struct mlx5_ibv_shared *sh = priv->sh; 1415 1416 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1417 return; 1418 pthread_mutex_lock(&sh->intr_mutex); 1419 assert(priv->ibv_port); 1420 assert(priv->ibv_port <= sh->max_port); 1421 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1422 if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) 1423 goto exit; 1424 assert(sh->port[priv->ibv_port - 1].ih_port_id == 1425 (uint32_t)dev->data->port_id); 1426 assert(sh->intr_cnt); 1427 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; 1428 if (!sh->intr_cnt || --sh->intr_cnt) 1429 goto exit; 1430 mlx5_intr_callback_unregister(&sh->intr_handle, 1431 mlx5_dev_interrupt_handler, sh); 1432 sh->intr_handle.fd = 0; 1433 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1434 if (sh->intr_handle_devx.fd) { 1435 rte_intr_callback_unregister(&sh->intr_handle_devx, 1436 mlx5_dev_interrupt_handler_devx, 1437 sh); 1438 sh->intr_handle_devx.fd = 0; 1439 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN; 1440 } 1441 if (sh->devx_comp) { 1442 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp); 1443 sh->devx_comp = NULL; 1444 } 1445 exit: 1446 pthread_mutex_unlock(&sh->intr_mutex); 1447 } 1448 1449 /** 1450 * Install shared asynchronous device events handler. 1451 * This function is implemented to support event sharing 1452 * between multiple ports of single IB device. 1453 * 1454 * @param dev 1455 * Pointer to Ethernet device. 1456 */ 1457 static void 1458 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev) 1459 { 1460 struct mlx5_priv *priv = dev->data->dev_private; 1461 struct mlx5_ibv_shared *sh = priv->sh; 1462 int ret; 1463 int flags; 1464 1465 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1466 return; 1467 pthread_mutex_lock(&sh->intr_mutex); 1468 assert(priv->ibv_port); 1469 assert(priv->ibv_port <= sh->max_port); 1470 assert(dev->data->port_id < RTE_MAX_ETHPORTS); 1471 if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) { 1472 /* The handler is already installed for this port. */ 1473 assert(sh->intr_cnt); 1474 goto exit; 1475 } 1476 sh->port[priv->ibv_port - 1].ih_port_id = (uint32_t)dev->data->port_id; 1477 if (sh->intr_cnt) { 1478 sh->intr_cnt++; 1479 goto exit; 1480 } 1481 /* No shared handler installed. */ 1482 assert(sh->ctx->async_fd > 0); 1483 flags = fcntl(sh->ctx->async_fd, F_GETFL); 1484 ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1485 if (ret) { 1486 DRV_LOG(INFO, "failed to change file descriptor" 1487 " async event queue"); 1488 goto error; 1489 } 1490 sh->intr_handle.fd = sh->ctx->async_fd; 1491 sh->intr_handle.type = RTE_INTR_HANDLE_EXT; 1492 rte_intr_callback_register(&sh->intr_handle, 1493 mlx5_dev_interrupt_handler, sh); 1494 if (priv->config.devx) { 1495 #ifndef HAVE_IBV_DEVX_ASYNC 1496 goto error_unregister; 1497 #else 1498 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx); 1499 if (sh->devx_comp) { 1500 flags = fcntl(sh->devx_comp->fd, F_GETFL); 1501 ret = fcntl(sh->devx_comp->fd, F_SETFL, 1502 flags | O_NONBLOCK); 1503 if (ret) { 1504 DRV_LOG(INFO, "failed to change file descriptor" 1505 " devx async event queue"); 1506 goto error_unregister; 1507 } 1508 sh->intr_handle_devx.fd = sh->devx_comp->fd; 1509 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT; 1510 rte_intr_callback_register 1511 (&sh->intr_handle_devx, 1512 mlx5_dev_interrupt_handler_devx, sh); 1513 } else { 1514 DRV_LOG(INFO, "failed to create devx async command " 1515 "completion"); 1516 goto error_unregister; 1517 } 1518 #endif /* HAVE_IBV_DEVX_ASYNC */ 1519 } 1520 sh->intr_cnt++; 1521 goto exit; 1522 error_unregister: 1523 rte_intr_callback_unregister(&sh->intr_handle, 1524 mlx5_dev_interrupt_handler, sh); 1525 error: 1526 /* Indicate there will be no interrupts. */ 1527 dev->data->dev_conf.intr_conf.lsc = 0; 1528 dev->data->dev_conf.intr_conf.rmv = 0; 1529 sh->intr_handle.fd = 0; 1530 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1531 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; 1532 exit: 1533 pthread_mutex_unlock(&sh->intr_mutex); 1534 } 1535 1536 /** 1537 * Uninstall interrupt handler. 1538 * 1539 * @param dev 1540 * Pointer to Ethernet device. 1541 */ 1542 void 1543 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) 1544 { 1545 mlx5_dev_shared_handler_uninstall(dev); 1546 } 1547 1548 /** 1549 * Install interrupt handler. 1550 * 1551 * @param dev 1552 * Pointer to Ethernet device. 1553 */ 1554 void 1555 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) 1556 { 1557 mlx5_dev_shared_handler_install(dev); 1558 } 1559 1560 /** 1561 * DPDK callback to bring the link DOWN. 1562 * 1563 * @param dev 1564 * Pointer to Ethernet device structure. 1565 * 1566 * @return 1567 * 0 on success, a negative errno value otherwise and rte_errno is set. 1568 */ 1569 int 1570 mlx5_set_link_down(struct rte_eth_dev *dev) 1571 { 1572 return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP); 1573 } 1574 1575 /** 1576 * DPDK callback to bring the link UP. 1577 * 1578 * @param dev 1579 * Pointer to Ethernet device structure. 1580 * 1581 * @return 1582 * 0 on success, a negative errno value otherwise and rte_errno is set. 1583 */ 1584 int 1585 mlx5_set_link_up(struct rte_eth_dev *dev) 1586 { 1587 return mlx5_set_flags(dev, ~IFF_UP, IFF_UP); 1588 } 1589 1590 /** 1591 * Configure the RX function to use. 1592 * 1593 * @param dev 1594 * Pointer to private data structure. 1595 * 1596 * @return 1597 * Pointer to selected Rx burst function. 1598 */ 1599 eth_rx_burst_t 1600 mlx5_select_rx_function(struct rte_eth_dev *dev) 1601 { 1602 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1603 1604 assert(dev != NULL); 1605 if (mlx5_check_vec_rx_support(dev) > 0) { 1606 rx_pkt_burst = mlx5_rx_burst_vec; 1607 DRV_LOG(DEBUG, "port %u selected Rx vectorized function", 1608 dev->data->port_id); 1609 } else if (mlx5_mprq_enabled(dev)) { 1610 rx_pkt_burst = mlx5_rx_burst_mprq; 1611 } 1612 return rx_pkt_burst; 1613 } 1614 1615 /** 1616 * Check if mlx5 device was removed. 1617 * 1618 * @param dev 1619 * Pointer to Ethernet device structure. 1620 * 1621 * @return 1622 * 1 when device is removed, otherwise 0. 1623 */ 1624 int 1625 mlx5_is_removed(struct rte_eth_dev *dev) 1626 { 1627 struct ibv_device_attr device_attr; 1628 struct mlx5_priv *priv = dev->data->dev_private; 1629 1630 if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO) 1631 return 1; 1632 return 0; 1633 } 1634 1635 /** 1636 * Get port ID list of mlx5 instances sharing a common device. 1637 * 1638 * @param[in] dev 1639 * Device to look for. 1640 * @param[out] port_list 1641 * Result buffer for collected port IDs. 1642 * @param port_list_n 1643 * Maximum number of entries in result buffer. If 0, @p port_list can be 1644 * NULL. 1645 * 1646 * @return 1647 * Number of matching instances regardless of the @p port_list_n 1648 * parameter, 0 if none were found. 1649 */ 1650 unsigned int 1651 mlx5_dev_to_port_id(const struct rte_device *dev, uint16_t *port_list, 1652 unsigned int port_list_n) 1653 { 1654 uint16_t id; 1655 unsigned int n = 0; 1656 1657 RTE_ETH_FOREACH_DEV_OF(id, dev) { 1658 if (n < port_list_n) 1659 port_list[n] = id; 1660 n++; 1661 } 1662 return n; 1663 } 1664 1665 /** 1666 * Get the E-Switch domain id this port belongs to. 1667 * 1668 * @param[in] port 1669 * Device port id. 1670 * @param[out] es_domain_id 1671 * E-Switch domain id. 1672 * @param[out] es_port_id 1673 * The port id of the port in the E-Switch. 1674 * 1675 * @return 1676 * 0 on success, a negative errno value otherwise and rte_errno is set. 1677 */ 1678 int 1679 mlx5_port_to_eswitch_info(uint16_t port, 1680 uint16_t *es_domain_id, uint16_t *es_port_id) 1681 { 1682 struct rte_eth_dev *dev; 1683 struct mlx5_priv *priv; 1684 1685 if (port >= RTE_MAX_ETHPORTS) { 1686 rte_errno = EINVAL; 1687 return -rte_errno; 1688 } 1689 if (!rte_eth_dev_is_valid_port(port)) { 1690 rte_errno = ENODEV; 1691 return -rte_errno; 1692 } 1693 dev = &rte_eth_devices[port]; 1694 priv = dev->data->dev_private; 1695 if (!(priv->representor || priv->master)) { 1696 rte_errno = EINVAL; 1697 return -rte_errno; 1698 } 1699 if (es_domain_id) 1700 *es_domain_id = priv->domain_id; 1701 if (es_port_id) 1702 *es_port_id = priv->vport_id; 1703 return 0; 1704 } 1705 1706 /** 1707 * Get switch information associated with network interface. 1708 * 1709 * @param ifindex 1710 * Network interface index. 1711 * @param[out] info 1712 * Switch information object, populated in case of success. 1713 * 1714 * @return 1715 * 0 on success, a negative errno value otherwise and rte_errno is set. 1716 */ 1717 int 1718 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info) 1719 { 1720 char ifname[IF_NAMESIZE]; 1721 char port_name[IF_NAMESIZE]; 1722 FILE *file; 1723 struct mlx5_switch_info data = { 1724 .master = 0, 1725 .representor = 0, 1726 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET, 1727 .port_name = 0, 1728 .switch_id = 0, 1729 }; 1730 DIR *dir; 1731 bool port_switch_id_set = false; 1732 bool device_dir = false; 1733 char c; 1734 int ret; 1735 1736 if (!if_indextoname(ifindex, ifname)) { 1737 rte_errno = errno; 1738 return -rte_errno; 1739 } 1740 1741 MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name", 1742 ifname); 1743 MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id", 1744 ifname); 1745 MKSTR(pci_device, "/sys/class/net/%s/device", 1746 ifname); 1747 1748 file = fopen(phys_port_name, "rb"); 1749 if (file != NULL) { 1750 ret = fscanf(file, "%s", port_name); 1751 fclose(file); 1752 if (ret == 1) 1753 mlx5_translate_port_name(port_name, &data); 1754 } 1755 file = fopen(phys_switch_id, "rb"); 1756 if (file == NULL) { 1757 rte_errno = errno; 1758 return -rte_errno; 1759 } 1760 port_switch_id_set = 1761 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 && 1762 c == '\n'; 1763 fclose(file); 1764 dir = opendir(pci_device); 1765 if (dir != NULL) { 1766 closedir(dir); 1767 device_dir = true; 1768 } 1769 if (port_switch_id_set) { 1770 /* We have some E-Switch configuration. */ 1771 mlx5_sysfs_check_switch_info(device_dir, &data); 1772 } 1773 *info = data; 1774 assert(!(data.master && data.representor)); 1775 if (data.master && data.representor) { 1776 DRV_LOG(ERR, "ifindex %u device is recognized as master" 1777 " and as representor", ifindex); 1778 rte_errno = ENODEV; 1779 return -rte_errno; 1780 } 1781 return 0; 1782 } 1783 1784 /** 1785 * Analyze gathered port parameters via Netlink to recognize master 1786 * and representor devices for E-Switch configuration. 1787 * 1788 * @param[in] num_vf_set 1789 * flag of presence of number of VFs port attribute. 1790 * @param[inout] switch_info 1791 * Port information, including port name as a number and port name 1792 * type if recognized 1793 * 1794 * @return 1795 * master and representor flags are set in switch_info according to 1796 * recognized parameters (if any). 1797 */ 1798 void 1799 mlx5_nl_check_switch_info(bool num_vf_set, 1800 struct mlx5_switch_info *switch_info) 1801 { 1802 switch (switch_info->name_type) { 1803 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 1804 /* 1805 * Name is not recognized, assume the master, 1806 * check the number of VFs key presence. 1807 */ 1808 switch_info->master = num_vf_set; 1809 break; 1810 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 1811 /* 1812 * Name is not set, this assumes the legacy naming 1813 * schema for master, just check if there is a 1814 * number of VFs key. 1815 */ 1816 switch_info->master = num_vf_set; 1817 break; 1818 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1819 /* New uplink naming schema recognized. */ 1820 switch_info->master = 1; 1821 break; 1822 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 1823 /* Legacy representors naming schema. */ 1824 switch_info->representor = !num_vf_set; 1825 break; 1826 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1827 /* New representors naming schema. */ 1828 switch_info->representor = 1; 1829 break; 1830 } 1831 } 1832 1833 /** 1834 * Analyze gathered port parameters via sysfs to recognize master 1835 * and representor devices for E-Switch configuration. 1836 * 1837 * @param[in] device_dir 1838 * flag of presence of "device" directory under port device key. 1839 * @param[inout] switch_info 1840 * Port information, including port name as a number and port name 1841 * type if recognized 1842 * 1843 * @return 1844 * master and representor flags are set in switch_info according to 1845 * recognized parameters (if any). 1846 */ 1847 void 1848 mlx5_sysfs_check_switch_info(bool device_dir, 1849 struct mlx5_switch_info *switch_info) 1850 { 1851 switch (switch_info->name_type) { 1852 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 1853 /* 1854 * Name is not recognized, assume the master, 1855 * check the device directory presence. 1856 */ 1857 switch_info->master = device_dir; 1858 break; 1859 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 1860 /* 1861 * Name is not set, this assumes the legacy naming 1862 * schema for master, just check if there is 1863 * a device directory. 1864 */ 1865 switch_info->master = device_dir; 1866 break; 1867 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1868 /* New uplink naming schema recognized. */ 1869 switch_info->master = 1; 1870 break; 1871 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 1872 /* Legacy representors naming schema. */ 1873 switch_info->representor = !device_dir; 1874 break; 1875 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1876 /* New representors naming schema. */ 1877 switch_info->representor = 1; 1878 break; 1879 } 1880 } 1881 1882 /** 1883 * Extract port name, as a number, from sysfs or netlink information. 1884 * 1885 * @param[in] port_name_in 1886 * String representing the port name. 1887 * @param[out] port_info_out 1888 * Port information, including port name as a number and port name 1889 * type if recognized 1890 * 1891 * @return 1892 * port_name field set according to recognized name format. 1893 */ 1894 void 1895 mlx5_translate_port_name(const char *port_name_in, 1896 struct mlx5_switch_info *port_info_out) 1897 { 1898 char pf_c1, pf_c2, vf_c1, vf_c2; 1899 char *end; 1900 int sc_items; 1901 1902 /* 1903 * Check for port-name as a string of the form pf0vf0 1904 * (support kernel ver >= 5.0 or OFED ver >= 4.6). 1905 */ 1906 sc_items = sscanf(port_name_in, "%c%c%d%c%c%d", 1907 &pf_c1, &pf_c2, &port_info_out->pf_num, 1908 &vf_c1, &vf_c2, &port_info_out->port_name); 1909 if (sc_items == 6 && 1910 pf_c1 == 'p' && pf_c2 == 'f' && 1911 vf_c1 == 'v' && vf_c2 == 'f') { 1912 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_PFVF; 1913 return; 1914 } 1915 /* 1916 * Check for port-name as a string of the form p0 1917 * (support kernel ver >= 5.0, or OFED ver >= 4.6). 1918 */ 1919 sc_items = sscanf(port_name_in, "%c%d", 1920 &pf_c1, &port_info_out->port_name); 1921 if (sc_items == 2 && pf_c1 == 'p') { 1922 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UPLINK; 1923 return; 1924 } 1925 /* Check for port-name as a number (support kernel ver < 5.0 */ 1926 errno = 0; 1927 port_info_out->port_name = strtol(port_name_in, &end, 0); 1928 if (!errno && 1929 (size_t)(end - port_name_in) == strlen(port_name_in)) { 1930 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_LEGACY; 1931 return; 1932 } 1933 port_info_out->name_type = MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN; 1934 return; 1935 } 1936