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 <inttypes.h> 8 #include <unistd.h> 9 #include <stdbool.h> 10 #include <stdint.h> 11 #include <stdio.h> 12 #include <string.h> 13 #include <stdlib.h> 14 #include <errno.h> 15 #include <dirent.h> 16 #include <net/if.h> 17 #include <sys/ioctl.h> 18 #include <sys/socket.h> 19 #include <netinet/in.h> 20 #include <linux/ethtool.h> 21 #include <linux/sockios.h> 22 #include <fcntl.h> 23 #include <stdalign.h> 24 #include <sys/un.h> 25 #include <time.h> 26 27 #include <rte_atomic.h> 28 #include <rte_ethdev_driver.h> 29 #include <rte_bus_pci.h> 30 #include <rte_mbuf.h> 31 #include <rte_common.h> 32 #include <rte_interrupts.h> 33 #include <rte_malloc.h> 34 #include <rte_string_fns.h> 35 #include <rte_rwlock.h> 36 #include <rte_cycles.h> 37 38 #include <mlx5_glue.h> 39 #include <mlx5_devx_cmds.h> 40 #include <mlx5_common.h> 41 42 #include "mlx5.h" 43 #include "mlx5_rxtx.h" 44 #include "mlx5_utils.h" 45 46 /* Supported speed values found in /usr/include/linux/ethtool.h */ 47 #ifndef HAVE_SUPPORTED_40000baseKR4_Full 48 #define SUPPORTED_40000baseKR4_Full (1 << 23) 49 #endif 50 #ifndef HAVE_SUPPORTED_40000baseCR4_Full 51 #define SUPPORTED_40000baseCR4_Full (1 << 24) 52 #endif 53 #ifndef HAVE_SUPPORTED_40000baseSR4_Full 54 #define SUPPORTED_40000baseSR4_Full (1 << 25) 55 #endif 56 #ifndef HAVE_SUPPORTED_40000baseLR4_Full 57 #define SUPPORTED_40000baseLR4_Full (1 << 26) 58 #endif 59 #ifndef HAVE_SUPPORTED_56000baseKR4_Full 60 #define SUPPORTED_56000baseKR4_Full (1 << 27) 61 #endif 62 #ifndef HAVE_SUPPORTED_56000baseCR4_Full 63 #define SUPPORTED_56000baseCR4_Full (1 << 28) 64 #endif 65 #ifndef HAVE_SUPPORTED_56000baseSR4_Full 66 #define SUPPORTED_56000baseSR4_Full (1 << 29) 67 #endif 68 #ifndef HAVE_SUPPORTED_56000baseLR4_Full 69 #define SUPPORTED_56000baseLR4_Full (1 << 30) 70 #endif 71 72 /* Add defines in case the running kernel is not the same as user headers. */ 73 #ifndef ETHTOOL_GLINKSETTINGS 74 struct ethtool_link_settings { 75 uint32_t cmd; 76 uint32_t speed; 77 uint8_t duplex; 78 uint8_t port; 79 uint8_t phy_address; 80 uint8_t autoneg; 81 uint8_t mdio_support; 82 uint8_t eth_to_mdix; 83 uint8_t eth_tp_mdix_ctrl; 84 int8_t link_mode_masks_nwords; 85 uint32_t reserved[8]; 86 uint32_t link_mode_masks[]; 87 }; 88 89 #define ETHTOOL_GLINKSETTINGS 0x0000004c 90 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5 91 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6 92 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17 93 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18 94 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19 95 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20 96 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21 97 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22 98 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23 99 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24 100 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25 101 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26 102 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27 103 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28 104 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29 105 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30 106 #endif 107 #ifndef HAVE_ETHTOOL_LINK_MODE_25G 108 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31 109 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32 110 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33 111 #endif 112 #ifndef HAVE_ETHTOOL_LINK_MODE_50G 113 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34 114 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35 115 #endif 116 #ifndef HAVE_ETHTOOL_LINK_MODE_100G 117 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36 118 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37 119 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38 120 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39 121 #endif 122 123 /** 124 * Get master interface name from private structure. 125 * 126 * @param[in] dev 127 * Pointer to Ethernet device. 128 * @param[out] ifname 129 * Interface name output buffer. 130 * 131 * @return 132 * 0 on success, a negative errno value otherwise and rte_errno is set. 133 */ 134 int 135 mlx5_get_master_ifname(const char *ibdev_path, char (*ifname)[IF_NAMESIZE]) 136 { 137 DIR *dir; 138 struct dirent *dent; 139 unsigned int dev_type = 0; 140 unsigned int dev_port_prev = ~0u; 141 char match[IF_NAMESIZE] = ""; 142 143 MLX5_ASSERT(ibdev_path); 144 { 145 MKSTR(path, "%s/device/net", ibdev_path); 146 147 dir = opendir(path); 148 if (dir == NULL) { 149 rte_errno = errno; 150 return -rte_errno; 151 } 152 } 153 while ((dent = readdir(dir)) != NULL) { 154 char *name = dent->d_name; 155 FILE *file; 156 unsigned int dev_port; 157 int r; 158 159 if ((name[0] == '.') && 160 ((name[1] == '\0') || 161 ((name[1] == '.') && (name[2] == '\0')))) 162 continue; 163 164 MKSTR(path, "%s/device/net/%s/%s", 165 ibdev_path, name, 166 (dev_type ? "dev_id" : "dev_port")); 167 168 file = fopen(path, "rb"); 169 if (file == NULL) { 170 if (errno != ENOENT) 171 continue; 172 /* 173 * Switch to dev_id when dev_port does not exist as 174 * is the case with Linux kernel versions < 3.15. 175 */ 176 try_dev_id: 177 match[0] = '\0'; 178 if (dev_type) 179 break; 180 dev_type = 1; 181 dev_port_prev = ~0u; 182 rewinddir(dir); 183 continue; 184 } 185 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); 186 fclose(file); 187 if (r != 1) 188 continue; 189 /* 190 * Switch to dev_id when dev_port returns the same value for 191 * all ports. May happen when using a MOFED release older than 192 * 3.0 with a Linux kernel >= 3.15. 193 */ 194 if (dev_port == dev_port_prev) 195 goto try_dev_id; 196 dev_port_prev = dev_port; 197 if (dev_port == 0) 198 strlcpy(match, name, sizeof(match)); 199 } 200 closedir(dir); 201 if (match[0] == '\0') { 202 rte_errno = ENOENT; 203 return -rte_errno; 204 } 205 strncpy(*ifname, match, sizeof(*ifname)); 206 return 0; 207 } 208 209 /** 210 * Get interface name from private structure. 211 * 212 * This is a port representor-aware version of mlx5_get_master_ifname(). 213 * 214 * @param[in] dev 215 * Pointer to Ethernet device. 216 * @param[out] ifname 217 * Interface name output buffer. 218 * 219 * @return 220 * 0 on success, a negative errno value otherwise and rte_errno is set. 221 */ 222 int 223 mlx5_get_ifname(const struct rte_eth_dev *dev, char (*ifname)[IF_NAMESIZE]) 224 { 225 struct mlx5_priv *priv = dev->data->dev_private; 226 unsigned int ifindex; 227 228 MLX5_ASSERT(priv); 229 MLX5_ASSERT(priv->sh); 230 ifindex = mlx5_ifindex(dev); 231 if (!ifindex) { 232 if (!priv->representor) 233 return mlx5_get_master_ifname(priv->sh->ibdev_path, 234 ifname); 235 rte_errno = ENXIO; 236 return -rte_errno; 237 } 238 if (if_indextoname(ifindex, &(*ifname)[0])) 239 return 0; 240 rte_errno = errno; 241 return -rte_errno; 242 } 243 244 /** 245 * Get the interface index from device name. 246 * 247 * @param[in] dev 248 * Pointer to Ethernet device. 249 * 250 * @return 251 * Nonzero interface index on success, zero otherwise and rte_errno is set. 252 */ 253 unsigned int 254 mlx5_ifindex(const struct rte_eth_dev *dev) 255 { 256 struct mlx5_priv *priv = dev->data->dev_private; 257 unsigned int ifindex; 258 259 MLX5_ASSERT(priv); 260 MLX5_ASSERT(priv->if_index); 261 ifindex = priv->if_index; 262 if (!ifindex) 263 rte_errno = ENXIO; 264 return ifindex; 265 } 266 267 /** 268 * Perform ifreq ioctl() on associated Ethernet device. 269 * 270 * @param[in] dev 271 * Pointer to Ethernet device. 272 * @param req 273 * Request number to pass to ioctl(). 274 * @param[out] ifr 275 * Interface request structure output buffer. 276 * 277 * @return 278 * 0 on success, a negative errno value otherwise and rte_errno is set. 279 */ 280 int 281 mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr) 282 { 283 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 284 int ret = 0; 285 286 if (sock == -1) { 287 rte_errno = errno; 288 return -rte_errno; 289 } 290 ret = mlx5_get_ifname(dev, &ifr->ifr_name); 291 if (ret) 292 goto error; 293 ret = ioctl(sock, req, ifr); 294 if (ret == -1) { 295 rte_errno = errno; 296 goto error; 297 } 298 close(sock); 299 return 0; 300 error: 301 close(sock); 302 return -rte_errno; 303 } 304 305 /** 306 * Get device MTU. 307 * 308 * @param dev 309 * Pointer to Ethernet device. 310 * @param[out] mtu 311 * MTU value output buffer. 312 * 313 * @return 314 * 0 on success, a negative errno value otherwise and rte_errno is set. 315 */ 316 int 317 mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu) 318 { 319 struct ifreq request; 320 int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request); 321 322 if (ret) 323 return ret; 324 *mtu = request.ifr_mtu; 325 return 0; 326 } 327 328 /** 329 * Set device MTU. 330 * 331 * @param dev 332 * Pointer to Ethernet device. 333 * @param mtu 334 * MTU value to set. 335 * 336 * @return 337 * 0 on success, a negative errno value otherwise and rte_errno is set. 338 */ 339 static int 340 mlx5_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 341 { 342 struct ifreq request = { .ifr_mtu = mtu, }; 343 344 return mlx5_ifreq(dev, SIOCSIFMTU, &request); 345 } 346 347 /** 348 * Set device flags. 349 * 350 * @param dev 351 * Pointer to Ethernet device. 352 * @param keep 353 * Bitmask for flags that must remain untouched. 354 * @param flags 355 * Bitmask for flags to modify. 356 * 357 * @return 358 * 0 on success, a negative errno value otherwise and rte_errno is set. 359 */ 360 int 361 mlx5_set_flags(struct rte_eth_dev *dev, unsigned int keep, unsigned int flags) 362 { 363 struct ifreq request; 364 int ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &request); 365 366 if (ret) 367 return ret; 368 request.ifr_flags &= keep; 369 request.ifr_flags |= flags & ~keep; 370 return mlx5_ifreq(dev, SIOCSIFFLAGS, &request); 371 } 372 373 /** 374 * DPDK callback for Ethernet device configuration. 375 * 376 * @param dev 377 * Pointer to Ethernet device structure. 378 * 379 * @return 380 * 0 on success, a negative errno value otherwise and rte_errno is set. 381 */ 382 int 383 mlx5_dev_configure(struct rte_eth_dev *dev) 384 { 385 struct mlx5_priv *priv = dev->data->dev_private; 386 unsigned int rxqs_n = dev->data->nb_rx_queues; 387 unsigned int txqs_n = dev->data->nb_tx_queues; 388 const uint8_t use_app_rss_key = 389 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 390 int ret = 0; 391 392 if (use_app_rss_key && 393 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 394 MLX5_RSS_HASH_KEY_LEN)) { 395 DRV_LOG(ERR, "port %u RSS key len must be %s Bytes long", 396 dev->data->port_id, RTE_STR(MLX5_RSS_HASH_KEY_LEN)); 397 rte_errno = EINVAL; 398 return -rte_errno; 399 } 400 priv->rss_conf.rss_key = 401 rte_realloc(priv->rss_conf.rss_key, 402 MLX5_RSS_HASH_KEY_LEN, 0); 403 if (!priv->rss_conf.rss_key) { 404 DRV_LOG(ERR, "port %u cannot allocate RSS hash key memory (%u)", 405 dev->data->port_id, rxqs_n); 406 rte_errno = ENOMEM; 407 return -rte_errno; 408 } 409 410 if (dev->data->dev_conf.rxmode.mq_mode & ETH_MQ_RX_RSS_FLAG) 411 dev->data->dev_conf.rxmode.offloads |= DEV_RX_OFFLOAD_RSS_HASH; 412 413 memcpy(priv->rss_conf.rss_key, 414 use_app_rss_key ? 415 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 416 rss_hash_default_key, 417 MLX5_RSS_HASH_KEY_LEN); 418 priv->rss_conf.rss_key_len = MLX5_RSS_HASH_KEY_LEN; 419 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 420 priv->rxqs = (void *)dev->data->rx_queues; 421 priv->txqs = (void *)dev->data->tx_queues; 422 if (txqs_n != priv->txqs_n) { 423 DRV_LOG(INFO, "port %u Tx queues number update: %u -> %u", 424 dev->data->port_id, priv->txqs_n, txqs_n); 425 priv->txqs_n = txqs_n; 426 } 427 if (rxqs_n > priv->config.ind_table_max_size) { 428 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", 429 dev->data->port_id, rxqs_n); 430 rte_errno = EINVAL; 431 return -rte_errno; 432 } 433 if (rxqs_n != priv->rxqs_n) { 434 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", 435 dev->data->port_id, priv->rxqs_n, rxqs_n); 436 priv->rxqs_n = rxqs_n; 437 } 438 priv->skip_default_rss_reta = 0; 439 ret = mlx5_proc_priv_init(dev); 440 if (ret) 441 return ret; 442 return 0; 443 } 444 445 /** 446 * Configure default RSS reta. 447 * 448 * @param dev 449 * Pointer to Ethernet device structure. 450 * 451 * @return 452 * 0 on success, a negative errno value otherwise and rte_errno is set. 453 */ 454 int 455 mlx5_dev_configure_rss_reta(struct rte_eth_dev *dev) 456 { 457 struct mlx5_priv *priv = dev->data->dev_private; 458 unsigned int rxqs_n = dev->data->nb_rx_queues; 459 unsigned int i; 460 unsigned int j; 461 unsigned int reta_idx_n; 462 int ret = 0; 463 unsigned int *rss_queue_arr = NULL; 464 unsigned int rss_queue_n = 0; 465 466 if (priv->skip_default_rss_reta) 467 return ret; 468 rss_queue_arr = rte_malloc("", rxqs_n * sizeof(unsigned int), 0); 469 if (!rss_queue_arr) { 470 DRV_LOG(ERR, "port %u cannot allocate RSS queue list (%u)", 471 dev->data->port_id, rxqs_n); 472 rte_errno = ENOMEM; 473 return -rte_errno; 474 } 475 for (i = 0, j = 0; i < rxqs_n; i++) { 476 struct mlx5_rxq_data *rxq_data; 477 struct mlx5_rxq_ctrl *rxq_ctrl; 478 479 rxq_data = (*priv->rxqs)[i]; 480 rxq_ctrl = container_of(rxq_data, struct mlx5_rxq_ctrl, rxq); 481 if (rxq_ctrl && rxq_ctrl->type == MLX5_RXQ_TYPE_STANDARD) 482 rss_queue_arr[j++] = i; 483 } 484 rss_queue_n = j; 485 if (rss_queue_n > priv->config.ind_table_max_size) { 486 DRV_LOG(ERR, "port %u cannot handle this many Rx queues (%u)", 487 dev->data->port_id, rss_queue_n); 488 rte_errno = EINVAL; 489 rte_free(rss_queue_arr); 490 return -rte_errno; 491 } 492 DRV_LOG(INFO, "port %u Rx queues number update: %u -> %u", 493 dev->data->port_id, priv->rxqs_n, rxqs_n); 494 priv->rxqs_n = rxqs_n; 495 /* 496 * If the requested number of RX queues is not a power of two, 497 * use the maximum indirection table size for better balancing. 498 * The result is always rounded to the next power of two. 499 */ 500 reta_idx_n = (1 << log2above((rss_queue_n & (rss_queue_n - 1)) ? 501 priv->config.ind_table_max_size : 502 rss_queue_n)); 503 ret = mlx5_rss_reta_index_resize(dev, reta_idx_n); 504 if (ret) { 505 rte_free(rss_queue_arr); 506 return ret; 507 } 508 /* 509 * When the number of RX queues is not a power of two, 510 * the remaining table entries are padded with reused WQs 511 * and hashes are not spread uniformly. 512 */ 513 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 514 (*priv->reta_idx)[i] = rss_queue_arr[j]; 515 if (++j == rss_queue_n) 516 j = 0; 517 } 518 rte_free(rss_queue_arr); 519 return ret; 520 } 521 522 /** 523 * Sets default tuning parameters. 524 * 525 * @param dev 526 * Pointer to Ethernet device. 527 * @param[out] info 528 * Info structure output buffer. 529 */ 530 static void 531 mlx5_set_default_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 532 { 533 struct mlx5_priv *priv = dev->data->dev_private; 534 535 /* Minimum CPU utilization. */ 536 info->default_rxportconf.ring_size = 256; 537 info->default_txportconf.ring_size = 256; 538 info->default_rxportconf.burst_size = MLX5_RX_DEFAULT_BURST; 539 info->default_txportconf.burst_size = MLX5_TX_DEFAULT_BURST; 540 if (priv->link_speed_capa & ETH_LINK_SPEED_100G) { 541 info->default_rxportconf.nb_queues = 16; 542 info->default_txportconf.nb_queues = 16; 543 if (dev->data->nb_rx_queues > 2 || 544 dev->data->nb_tx_queues > 2) { 545 /* Max Throughput. */ 546 info->default_rxportconf.ring_size = 2048; 547 info->default_txportconf.ring_size = 2048; 548 } 549 } else { 550 info->default_rxportconf.nb_queues = 8; 551 info->default_txportconf.nb_queues = 8; 552 if (dev->data->nb_rx_queues > 2 || 553 dev->data->nb_tx_queues > 2) { 554 /* Max Throughput. */ 555 info->default_rxportconf.ring_size = 4096; 556 info->default_txportconf.ring_size = 4096; 557 } 558 } 559 } 560 561 /** 562 * Sets tx mbuf limiting parameters. 563 * 564 * @param dev 565 * Pointer to Ethernet device. 566 * @param[out] info 567 * Info structure output buffer. 568 */ 569 static void 570 mlx5_set_txlimit_params(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 571 { 572 struct mlx5_priv *priv = dev->data->dev_private; 573 struct mlx5_dev_config *config = &priv->config; 574 unsigned int inlen; 575 uint16_t nb_max; 576 577 inlen = (config->txq_inline_max == MLX5_ARG_UNSET) ? 578 MLX5_SEND_DEF_INLINE_LEN : 579 (unsigned int)config->txq_inline_max; 580 MLX5_ASSERT(config->txq_inline_min >= 0); 581 inlen = RTE_MAX(inlen, (unsigned int)config->txq_inline_min); 582 inlen = RTE_MIN(inlen, MLX5_WQE_SIZE_MAX + 583 MLX5_ESEG_MIN_INLINE_SIZE - 584 MLX5_WQE_CSEG_SIZE - 585 MLX5_WQE_ESEG_SIZE - 586 MLX5_WQE_DSEG_SIZE * 2); 587 nb_max = (MLX5_WQE_SIZE_MAX + 588 MLX5_ESEG_MIN_INLINE_SIZE - 589 MLX5_WQE_CSEG_SIZE - 590 MLX5_WQE_ESEG_SIZE - 591 MLX5_WQE_DSEG_SIZE - 592 inlen) / MLX5_WSEG_SIZE; 593 info->tx_desc_lim.nb_seg_max = nb_max; 594 info->tx_desc_lim.nb_mtu_seg_max = nb_max; 595 } 596 597 /** 598 * DPDK callback to get information about the device. 599 * 600 * @param dev 601 * Pointer to Ethernet device structure. 602 * @param[out] info 603 * Info structure output buffer. 604 */ 605 int 606 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 607 { 608 struct mlx5_priv *priv = dev->data->dev_private; 609 struct mlx5_dev_config *config = &priv->config; 610 unsigned int max; 611 612 /* FIXME: we should ask the device for these values. */ 613 info->min_rx_bufsize = 32; 614 info->max_rx_pktlen = 65536; 615 info->max_lro_pkt_size = MLX5_MAX_LRO_SIZE; 616 /* 617 * Since we need one CQ per QP, the limit is the minimum number 618 * between the two values. 619 */ 620 max = RTE_MIN(priv->sh->device_attr.orig_attr.max_cq, 621 priv->sh->device_attr.orig_attr.max_qp); 622 /* max_rx_queues is uint16_t. */ 623 max = RTE_MIN(max, (unsigned int)UINT16_MAX); 624 info->max_rx_queues = max; 625 info->max_tx_queues = max; 626 info->max_mac_addrs = MLX5_MAX_UC_MAC_ADDRESSES; 627 info->rx_queue_offload_capa = mlx5_get_rx_queue_offloads(dev); 628 info->rx_offload_capa = (mlx5_get_rx_port_offloads() | 629 info->rx_queue_offload_capa); 630 info->tx_offload_capa = mlx5_get_tx_port_offloads(dev); 631 info->if_index = mlx5_ifindex(dev); 632 info->reta_size = priv->reta_idx_n ? 633 priv->reta_idx_n : config->ind_table_max_size; 634 info->hash_key_size = MLX5_RSS_HASH_KEY_LEN; 635 info->speed_capa = priv->link_speed_capa; 636 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; 637 mlx5_set_default_params(dev, info); 638 mlx5_set_txlimit_params(dev, info); 639 info->switch_info.name = dev->data->name; 640 info->switch_info.domain_id = priv->domain_id; 641 info->switch_info.port_id = priv->representor_id; 642 if (priv->representor) { 643 uint16_t port_id; 644 645 if (priv->pf_bond >= 0) { 646 /* 647 * Switch port ID is opaque value with driver defined 648 * format. Push the PF index in bonding configurations 649 * in upper four bits of port ID. If we get too many 650 * representors (more than 4K) or PFs (more than 15) 651 * this approach must be reconsidered. 652 */ 653 if ((info->switch_info.port_id >> 654 MLX5_PORT_ID_BONDING_PF_SHIFT) || 655 priv->pf_bond > MLX5_PORT_ID_BONDING_PF_MASK) { 656 DRV_LOG(ERR, "can't update switch port ID" 657 " for bonding device"); 658 MLX5_ASSERT(false); 659 return -ENODEV; 660 } 661 info->switch_info.port_id |= 662 priv->pf_bond << MLX5_PORT_ID_BONDING_PF_SHIFT; 663 } 664 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { 665 struct mlx5_priv *opriv = 666 rte_eth_devices[port_id].data->dev_private; 667 668 if (!opriv || 669 opriv->representor || 670 opriv->sh != priv->sh || 671 opriv->domain_id != priv->domain_id) 672 continue; 673 /* 674 * Override switch name with that of the master 675 * device. 676 */ 677 info->switch_info.name = opriv->dev_data->name; 678 break; 679 } 680 } 681 return 0; 682 } 683 684 /** 685 * Get device current raw clock counter 686 * 687 * @param dev 688 * Pointer to Ethernet device structure. 689 * @param[out] time 690 * Current raw clock counter of the device. 691 * 692 * @return 693 * 0 if the clock has correctly been read 694 * The value of errno in case of error 695 */ 696 int 697 mlx5_read_clock(struct rte_eth_dev *dev, uint64_t *clock) 698 { 699 struct mlx5_priv *priv = dev->data->dev_private; 700 struct ibv_context *ctx = priv->sh->ctx; 701 struct ibv_values_ex values; 702 int err = 0; 703 704 values.comp_mask = IBV_VALUES_MASK_RAW_CLOCK; 705 err = mlx5_glue->query_rt_values_ex(ctx, &values); 706 if (err != 0) { 707 DRV_LOG(WARNING, "Could not query the clock !"); 708 return err; 709 } 710 *clock = values.raw_clock.tv_nsec; 711 return 0; 712 } 713 714 /** 715 * Get firmware version of a device. 716 * 717 * @param dev 718 * Ethernet device port. 719 * @param fw_ver 720 * String output allocated by caller. 721 * @param fw_size 722 * Size of the output string, including terminating null byte. 723 * 724 * @return 725 * 0 on success, or the size of the non truncated string if too big. 726 */ 727 int mlx5_fw_version_get(struct rte_eth_dev *dev, char *fw_ver, size_t fw_size) 728 { 729 struct mlx5_priv *priv = dev->data->dev_private; 730 struct ibv_device_attr *attr = &priv->sh->device_attr.orig_attr; 731 size_t size = strnlen(attr->fw_ver, sizeof(attr->fw_ver)) + 1; 732 733 if (fw_size < size) 734 return size; 735 if (fw_ver != NULL) 736 strlcpy(fw_ver, attr->fw_ver, fw_size); 737 return 0; 738 } 739 740 /** 741 * Get supported packet types. 742 * 743 * @param dev 744 * Pointer to Ethernet device structure. 745 * 746 * @return 747 * A pointer to the supported Packet types array. 748 */ 749 const uint32_t * 750 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 751 { 752 static const uint32_t ptypes[] = { 753 /* refers to rxq_cq_to_pkt_type() */ 754 RTE_PTYPE_L2_ETHER, 755 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 756 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 757 RTE_PTYPE_L4_NONFRAG, 758 RTE_PTYPE_L4_FRAG, 759 RTE_PTYPE_L4_TCP, 760 RTE_PTYPE_L4_UDP, 761 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 762 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 763 RTE_PTYPE_INNER_L4_NONFRAG, 764 RTE_PTYPE_INNER_L4_FRAG, 765 RTE_PTYPE_INNER_L4_TCP, 766 RTE_PTYPE_INNER_L4_UDP, 767 RTE_PTYPE_UNKNOWN 768 }; 769 770 if (dev->rx_pkt_burst == mlx5_rx_burst || 771 dev->rx_pkt_burst == mlx5_rx_burst_mprq || 772 dev->rx_pkt_burst == mlx5_rx_burst_vec) 773 return ptypes; 774 return NULL; 775 } 776 777 /** 778 * Retrieve the master device for representor in the same switch domain. 779 * 780 * @param dev 781 * Pointer to representor Ethernet device structure. 782 * 783 * @return 784 * Master device structure on success, NULL otherwise. 785 */ 786 787 static struct rte_eth_dev * 788 mlx5_find_master_dev(struct rte_eth_dev *dev) 789 { 790 struct mlx5_priv *priv; 791 uint16_t port_id; 792 uint16_t domain_id; 793 794 priv = dev->data->dev_private; 795 domain_id = priv->domain_id; 796 MLX5_ASSERT(priv->representor); 797 MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { 798 struct mlx5_priv *opriv = 799 rte_eth_devices[port_id].data->dev_private; 800 if (opriv && 801 opriv->master && 802 opriv->domain_id == domain_id && 803 opriv->sh == priv->sh) 804 return &rte_eth_devices[port_id]; 805 } 806 return NULL; 807 } 808 809 /** 810 * DPDK callback to retrieve physical link information. 811 * 812 * @param dev 813 * Pointer to Ethernet device structure. 814 * @param[out] link 815 * Storage for current link status. 816 * 817 * @return 818 * 0 on success, a negative errno value otherwise and rte_errno is set. 819 */ 820 static int 821 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, 822 struct rte_eth_link *link) 823 { 824 struct mlx5_priv *priv = dev->data->dev_private; 825 struct ethtool_cmd edata = { 826 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 827 }; 828 struct ifreq ifr; 829 struct rte_eth_link dev_link; 830 int link_speed = 0; 831 int ret; 832 833 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 834 if (ret) { 835 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 836 dev->data->port_id, strerror(rte_errno)); 837 return ret; 838 } 839 dev_link = (struct rte_eth_link) { 840 .link_status = ((ifr.ifr_flags & IFF_UP) && 841 (ifr.ifr_flags & IFF_RUNNING)), 842 }; 843 ifr = (struct ifreq) { 844 .ifr_data = (void *)&edata, 845 }; 846 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 847 if (ret) { 848 if (ret == -ENOTSUP && priv->representor) { 849 struct rte_eth_dev *master; 850 851 /* 852 * For representors we can try to inherit link 853 * settings from the master device. Actually 854 * link settings do not make a lot of sense 855 * for representors due to missing physical 856 * link. The old kernel drivers supported 857 * emulated settings query for representors, 858 * the new ones do not, so we have to add 859 * this code for compatibility issues. 860 */ 861 master = mlx5_find_master_dev(dev); 862 if (master) { 863 ifr = (struct ifreq) { 864 .ifr_data = (void *)&edata, 865 }; 866 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 867 } 868 } 869 if (ret) { 870 DRV_LOG(WARNING, 871 "port %u ioctl(SIOCETHTOOL," 872 " ETHTOOL_GSET) failed: %s", 873 dev->data->port_id, strerror(rte_errno)); 874 return ret; 875 } 876 } 877 link_speed = ethtool_cmd_speed(&edata); 878 if (link_speed == -1) 879 dev_link.link_speed = ETH_SPEED_NUM_NONE; 880 else 881 dev_link.link_speed = link_speed; 882 priv->link_speed_capa = 0; 883 if (edata.supported & SUPPORTED_Autoneg) 884 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 885 if (edata.supported & (SUPPORTED_1000baseT_Full | 886 SUPPORTED_1000baseKX_Full)) 887 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 888 if (edata.supported & SUPPORTED_10000baseKR_Full) 889 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 890 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 891 SUPPORTED_40000baseCR4_Full | 892 SUPPORTED_40000baseSR4_Full | 893 SUPPORTED_40000baseLR4_Full)) 894 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 895 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 896 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 897 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 898 ETH_LINK_SPEED_FIXED); 899 if (((dev_link.link_speed && !dev_link.link_status) || 900 (!dev_link.link_speed && dev_link.link_status))) { 901 rte_errno = EAGAIN; 902 return -rte_errno; 903 } 904 *link = dev_link; 905 return 0; 906 } 907 908 /** 909 * Retrieve physical link information (unlocked version using new ioctl). 910 * 911 * @param dev 912 * Pointer to Ethernet device structure. 913 * @param[out] link 914 * Storage for current link status. 915 * 916 * @return 917 * 0 on success, a negative errno value otherwise and rte_errno is set. 918 */ 919 static int 920 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, 921 struct rte_eth_link *link) 922 923 { 924 struct mlx5_priv *priv = dev->data->dev_private; 925 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 926 struct ifreq ifr; 927 struct rte_eth_link dev_link; 928 struct rte_eth_dev *master = NULL; 929 uint64_t sc; 930 int ret; 931 932 ret = mlx5_ifreq(dev, SIOCGIFFLAGS, &ifr); 933 if (ret) { 934 DRV_LOG(WARNING, "port %u ioctl(SIOCGIFFLAGS) failed: %s", 935 dev->data->port_id, strerror(rte_errno)); 936 return ret; 937 } 938 dev_link = (struct rte_eth_link) { 939 .link_status = ((ifr.ifr_flags & IFF_UP) && 940 (ifr.ifr_flags & IFF_RUNNING)), 941 }; 942 ifr = (struct ifreq) { 943 .ifr_data = (void *)&gcmd, 944 }; 945 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 946 if (ret) { 947 if (ret == -ENOTSUP && priv->representor) { 948 /* 949 * For representors we can try to inherit link 950 * settings from the master device. Actually 951 * link settings do not make a lot of sense 952 * for representors due to missing physical 953 * link. The old kernel drivers supported 954 * emulated settings query for representors, 955 * the new ones do not, so we have to add 956 * this code for compatibility issues. 957 */ 958 master = mlx5_find_master_dev(dev); 959 if (master) { 960 ifr = (struct ifreq) { 961 .ifr_data = (void *)&gcmd, 962 }; 963 ret = mlx5_ifreq(master, SIOCETHTOOL, &ifr); 964 } 965 } 966 if (ret) { 967 DRV_LOG(DEBUG, 968 "port %u ioctl(SIOCETHTOOL," 969 " ETHTOOL_GLINKSETTINGS) failed: %s", 970 dev->data->port_id, strerror(rte_errno)); 971 return ret; 972 } 973 974 } 975 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 976 977 alignas(struct ethtool_link_settings) 978 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 979 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 980 struct ethtool_link_settings *ecmd = (void *)data; 981 982 *ecmd = gcmd; 983 ifr.ifr_data = (void *)ecmd; 984 ret = mlx5_ifreq(master ? master : dev, SIOCETHTOOL, &ifr); 985 if (ret) { 986 DRV_LOG(DEBUG, 987 "port %u ioctl(SIOCETHTOOL," 988 "ETHTOOL_GLINKSETTINGS) failed: %s", 989 dev->data->port_id, strerror(rte_errno)); 990 return ret; 991 } 992 dev_link.link_speed = (ecmd->speed == UINT32_MAX) ? ETH_SPEED_NUM_NONE : 993 ecmd->speed; 994 sc = ecmd->link_mode_masks[0] | 995 ((uint64_t)ecmd->link_mode_masks[1] << 32); 996 priv->link_speed_capa = 0; 997 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 998 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 999 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 1000 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 1001 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 1002 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 1003 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 1004 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 1005 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 1006 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 1007 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 1008 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 1009 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 1010 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 1011 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 1012 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 1013 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 1014 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 1015 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 1016 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 1017 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 1018 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 1019 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 1020 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 1021 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 1022 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 1023 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 1024 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 1025 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 1026 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 1027 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 1028 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 1029 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 1030 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 1031 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 1032 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 1033 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 1034 ETH_LINK_SPEED_FIXED); 1035 if (((dev_link.link_speed && !dev_link.link_status) || 1036 (!dev_link.link_speed && dev_link.link_status))) { 1037 rte_errno = EAGAIN; 1038 return -rte_errno; 1039 } 1040 *link = dev_link; 1041 return 0; 1042 } 1043 1044 /** 1045 * DPDK callback to retrieve physical link information. 1046 * 1047 * @param dev 1048 * Pointer to Ethernet device structure. 1049 * @param wait_to_complete 1050 * Wait for request completion. 1051 * 1052 * @return 1053 * 0 if link status was not updated, positive if it was, a negative errno 1054 * value otherwise and rte_errno is set. 1055 */ 1056 int 1057 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 1058 { 1059 int ret; 1060 struct rte_eth_link dev_link; 1061 time_t start_time = time(NULL); 1062 int retry = MLX5_GET_LINK_STATUS_RETRY_COUNT; 1063 1064 do { 1065 ret = mlx5_link_update_unlocked_gs(dev, &dev_link); 1066 if (ret == -ENOTSUP) 1067 ret = mlx5_link_update_unlocked_gset(dev, &dev_link); 1068 if (ret == 0) 1069 break; 1070 /* Handle wait to complete situation. */ 1071 if ((wait_to_complete || retry) && ret == -EAGAIN) { 1072 if (abs((int)difftime(time(NULL), start_time)) < 1073 MLX5_LINK_STATUS_TIMEOUT) { 1074 usleep(0); 1075 continue; 1076 } else { 1077 rte_errno = EBUSY; 1078 return -rte_errno; 1079 } 1080 } else if (ret < 0) { 1081 return ret; 1082 } 1083 } while (wait_to_complete || retry-- > 0); 1084 ret = !!memcmp(&dev->data->dev_link, &dev_link, 1085 sizeof(struct rte_eth_link)); 1086 dev->data->dev_link = dev_link; 1087 return ret; 1088 } 1089 1090 /** 1091 * DPDK callback to change the MTU. 1092 * 1093 * @param dev 1094 * Pointer to Ethernet device structure. 1095 * @param in_mtu 1096 * New MTU. 1097 * 1098 * @return 1099 * 0 on success, a negative errno value otherwise and rte_errno is set. 1100 */ 1101 int 1102 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 1103 { 1104 struct mlx5_priv *priv = dev->data->dev_private; 1105 uint16_t kern_mtu = 0; 1106 int ret; 1107 1108 ret = mlx5_get_mtu(dev, &kern_mtu); 1109 if (ret) 1110 return ret; 1111 /* Set kernel interface MTU first. */ 1112 ret = mlx5_set_mtu(dev, mtu); 1113 if (ret) 1114 return ret; 1115 ret = mlx5_get_mtu(dev, &kern_mtu); 1116 if (ret) 1117 return ret; 1118 if (kern_mtu == mtu) { 1119 priv->mtu = mtu; 1120 DRV_LOG(DEBUG, "port %u adapter MTU set to %u", 1121 dev->data->port_id, mtu); 1122 return 0; 1123 } 1124 rte_errno = EAGAIN; 1125 return -rte_errno; 1126 } 1127 1128 /** 1129 * DPDK callback to get flow control status. 1130 * 1131 * @param dev 1132 * Pointer to Ethernet device structure. 1133 * @param[out] fc_conf 1134 * Flow control output buffer. 1135 * 1136 * @return 1137 * 0 on success, a negative errno value otherwise and rte_errno is set. 1138 */ 1139 int 1140 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1141 { 1142 struct ifreq ifr; 1143 struct ethtool_pauseparam ethpause = { 1144 .cmd = ETHTOOL_GPAUSEPARAM 1145 }; 1146 int ret; 1147 1148 ifr.ifr_data = (void *)ðpause; 1149 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1150 if (ret) { 1151 DRV_LOG(WARNING, 1152 "port %u ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM) failed:" 1153 " %s", 1154 dev->data->port_id, strerror(rte_errno)); 1155 return ret; 1156 } 1157 fc_conf->autoneg = ethpause.autoneg; 1158 if (ethpause.rx_pause && ethpause.tx_pause) 1159 fc_conf->mode = RTE_FC_FULL; 1160 else if (ethpause.rx_pause) 1161 fc_conf->mode = RTE_FC_RX_PAUSE; 1162 else if (ethpause.tx_pause) 1163 fc_conf->mode = RTE_FC_TX_PAUSE; 1164 else 1165 fc_conf->mode = RTE_FC_NONE; 1166 return 0; 1167 } 1168 1169 /** 1170 * DPDK callback to modify flow control parameters. 1171 * 1172 * @param dev 1173 * Pointer to Ethernet device structure. 1174 * @param[in] fc_conf 1175 * Flow control parameters. 1176 * 1177 * @return 1178 * 0 on success, a negative errno value otherwise and rte_errno is set. 1179 */ 1180 int 1181 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1182 { 1183 struct ifreq ifr; 1184 struct ethtool_pauseparam ethpause = { 1185 .cmd = ETHTOOL_SPAUSEPARAM 1186 }; 1187 int ret; 1188 1189 ifr.ifr_data = (void *)ðpause; 1190 ethpause.autoneg = fc_conf->autoneg; 1191 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1192 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1193 ethpause.rx_pause = 1; 1194 else 1195 ethpause.rx_pause = 0; 1196 1197 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1198 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1199 ethpause.tx_pause = 1; 1200 else 1201 ethpause.tx_pause = 0; 1202 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1203 if (ret) { 1204 DRV_LOG(WARNING, 1205 "port %u ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1206 " failed: %s", 1207 dev->data->port_id, strerror(rte_errno)); 1208 return ret; 1209 } 1210 return 0; 1211 } 1212 1213 /** 1214 * Handle asynchronous removal event for entire multiport device. 1215 * 1216 * @param sh 1217 * Infiniband device shared context. 1218 */ 1219 static void 1220 mlx5_dev_interrupt_device_fatal(struct mlx5_ibv_shared *sh) 1221 { 1222 uint32_t i; 1223 1224 for (i = 0; i < sh->max_port; ++i) { 1225 struct rte_eth_dev *dev; 1226 1227 if (sh->port[i].ih_port_id >= RTE_MAX_ETHPORTS) { 1228 /* 1229 * Or not existing port either no 1230 * handler installed for this port. 1231 */ 1232 continue; 1233 } 1234 dev = &rte_eth_devices[sh->port[i].ih_port_id]; 1235 MLX5_ASSERT(dev); 1236 if (dev->data->dev_conf.intr_conf.rmv) 1237 _rte_eth_dev_callback_process 1238 (dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1239 } 1240 } 1241 1242 /** 1243 * Handle shared asynchronous events the NIC (removal event 1244 * and link status change). Supports multiport IB device. 1245 * 1246 * @param cb_arg 1247 * Callback argument. 1248 */ 1249 void 1250 mlx5_dev_interrupt_handler(void *cb_arg) 1251 { 1252 struct mlx5_ibv_shared *sh = cb_arg; 1253 struct ibv_async_event event; 1254 1255 /* Read all message from the IB device and acknowledge them. */ 1256 for (;;) { 1257 struct rte_eth_dev *dev; 1258 uint32_t tmp; 1259 1260 if (mlx5_glue->get_async_event(sh->ctx, &event)) 1261 break; 1262 /* Retrieve and check IB port index. */ 1263 tmp = (uint32_t)event.element.port_num; 1264 if (!tmp && event.event_type == IBV_EVENT_DEVICE_FATAL) { 1265 /* 1266 * The DEVICE_FATAL event is called once for 1267 * entire device without port specifying. 1268 * We should notify all existing ports. 1269 */ 1270 mlx5_glue->ack_async_event(&event); 1271 mlx5_dev_interrupt_device_fatal(sh); 1272 continue; 1273 } 1274 MLX5_ASSERT(tmp && (tmp <= sh->max_port)); 1275 if (!tmp) { 1276 /* Unsupported devive level event. */ 1277 mlx5_glue->ack_async_event(&event); 1278 DRV_LOG(DEBUG, 1279 "unsupported common event (type %d)", 1280 event.event_type); 1281 continue; 1282 } 1283 if (tmp > sh->max_port) { 1284 /* Invalid IB port index. */ 1285 mlx5_glue->ack_async_event(&event); 1286 DRV_LOG(DEBUG, 1287 "cannot handle an event (type %d)" 1288 "due to invalid IB port index (%u)", 1289 event.event_type, tmp); 1290 continue; 1291 } 1292 if (sh->port[tmp - 1].ih_port_id >= RTE_MAX_ETHPORTS) { 1293 /* No handler installed. */ 1294 mlx5_glue->ack_async_event(&event); 1295 DRV_LOG(DEBUG, 1296 "cannot handle an event (type %d)" 1297 "due to no handler installed for port %u", 1298 event.event_type, tmp); 1299 continue; 1300 } 1301 /* Retrieve ethernet device descriptor. */ 1302 tmp = sh->port[tmp - 1].ih_port_id; 1303 dev = &rte_eth_devices[tmp]; 1304 MLX5_ASSERT(dev); 1305 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1306 event.event_type == IBV_EVENT_PORT_ERR) && 1307 dev->data->dev_conf.intr_conf.lsc) { 1308 mlx5_glue->ack_async_event(&event); 1309 if (mlx5_link_update(dev, 0) == -EAGAIN) { 1310 usleep(0); 1311 continue; 1312 } 1313 _rte_eth_dev_callback_process 1314 (dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1315 continue; 1316 } 1317 DRV_LOG(DEBUG, 1318 "port %u cannot handle an unknown event (type %d)", 1319 dev->data->port_id, event.event_type); 1320 mlx5_glue->ack_async_event(&event); 1321 } 1322 } 1323 1324 /* 1325 * Unregister callback handler safely. The handler may be active 1326 * while we are trying to unregister it, in this case code -EAGAIN 1327 * is returned by rte_intr_callback_unregister(). This routine checks 1328 * the return code and tries to unregister handler again. 1329 * 1330 * @param handle 1331 * interrupt handle 1332 * @param cb_fn 1333 * pointer to callback routine 1334 * @cb_arg 1335 * opaque callback parameter 1336 */ 1337 void 1338 mlx5_intr_callback_unregister(const struct rte_intr_handle *handle, 1339 rte_intr_callback_fn cb_fn, void *cb_arg) 1340 { 1341 /* 1342 * Try to reduce timeout management overhead by not calling 1343 * the timer related routines on the first iteration. If the 1344 * unregistering succeeds on first call there will be no 1345 * timer calls at all. 1346 */ 1347 uint64_t twait = 0; 1348 uint64_t start = 0; 1349 1350 do { 1351 int ret; 1352 1353 ret = rte_intr_callback_unregister(handle, cb_fn, cb_arg); 1354 if (ret >= 0) 1355 return; 1356 if (ret != -EAGAIN) { 1357 DRV_LOG(INFO, "failed to unregister interrupt" 1358 " handler (error: %d)", ret); 1359 MLX5_ASSERT(false); 1360 return; 1361 } 1362 if (twait) { 1363 struct timespec onems; 1364 1365 /* Wait one millisecond and try again. */ 1366 onems.tv_sec = 0; 1367 onems.tv_nsec = NS_PER_S / MS_PER_S; 1368 nanosleep(&onems, 0); 1369 /* Check whether one second elapsed. */ 1370 if ((rte_get_timer_cycles() - start) <= twait) 1371 continue; 1372 } else { 1373 /* 1374 * We get the amount of timer ticks for one second. 1375 * If this amount elapsed it means we spent one 1376 * second in waiting. This branch is executed once 1377 * on first iteration. 1378 */ 1379 twait = rte_get_timer_hz(); 1380 MLX5_ASSERT(twait); 1381 } 1382 /* 1383 * Timeout elapsed, show message (once a second) and retry. 1384 * We have no other acceptable option here, if we ignore 1385 * the unregistering return code the handler will not 1386 * be unregistered, fd will be closed and we may get the 1387 * crush. Hanging and messaging in the loop seems not to be 1388 * the worst choice. 1389 */ 1390 DRV_LOG(INFO, "Retrying to unregister interrupt handler"); 1391 start = rte_get_timer_cycles(); 1392 } while (true); 1393 } 1394 1395 /** 1396 * Handle DEVX interrupts from the NIC. 1397 * This function is probably called from the DPDK host thread. 1398 * 1399 * @param cb_arg 1400 * Callback argument. 1401 */ 1402 void 1403 mlx5_dev_interrupt_handler_devx(void *cb_arg) 1404 { 1405 #ifndef HAVE_IBV_DEVX_ASYNC 1406 (void)cb_arg; 1407 return; 1408 #else 1409 struct mlx5_ibv_shared *sh = cb_arg; 1410 union { 1411 struct mlx5dv_devx_async_cmd_hdr cmd_resp; 1412 uint8_t buf[MLX5_ST_SZ_BYTES(query_flow_counter_out) + 1413 MLX5_ST_SZ_BYTES(traffic_counter) + 1414 sizeof(struct mlx5dv_devx_async_cmd_hdr)]; 1415 } out; 1416 uint8_t *buf = out.buf + sizeof(out.cmd_resp); 1417 1418 while (!mlx5_glue->devx_get_async_cmd_comp(sh->devx_comp, 1419 &out.cmd_resp, 1420 sizeof(out.buf))) 1421 mlx5_flow_async_pool_query_handle 1422 (sh, (uint64_t)out.cmd_resp.wr_id, 1423 mlx5_devx_get_out_command_status(buf)); 1424 #endif /* HAVE_IBV_DEVX_ASYNC */ 1425 } 1426 1427 /** 1428 * Uninstall shared asynchronous device events handler. 1429 * This function is implemented to support event sharing 1430 * between multiple ports of single IB device. 1431 * 1432 * @param dev 1433 * Pointer to Ethernet device. 1434 */ 1435 static void 1436 mlx5_dev_shared_handler_uninstall(struct rte_eth_dev *dev) 1437 { 1438 struct mlx5_priv *priv = dev->data->dev_private; 1439 struct mlx5_ibv_shared *sh = priv->sh; 1440 1441 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1442 return; 1443 pthread_mutex_lock(&sh->intr_mutex); 1444 MLX5_ASSERT(priv->ibv_port); 1445 MLX5_ASSERT(priv->ibv_port <= sh->max_port); 1446 MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); 1447 if (sh->port[priv->ibv_port - 1].ih_port_id >= RTE_MAX_ETHPORTS) 1448 goto exit; 1449 MLX5_ASSERT(sh->port[priv->ibv_port - 1].ih_port_id == 1450 (uint32_t)dev->data->port_id); 1451 MLX5_ASSERT(sh->intr_cnt); 1452 sh->port[priv->ibv_port - 1].ih_port_id = RTE_MAX_ETHPORTS; 1453 if (!sh->intr_cnt || --sh->intr_cnt) 1454 goto exit; 1455 mlx5_intr_callback_unregister(&sh->intr_handle, 1456 mlx5_dev_interrupt_handler, sh); 1457 sh->intr_handle.fd = 0; 1458 sh->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1459 exit: 1460 pthread_mutex_unlock(&sh->intr_mutex); 1461 } 1462 1463 /** 1464 * Uninstall devx shared asynchronous device events handler. 1465 * This function is implemeted to support event sharing 1466 * between multiple ports of single IB device. 1467 * 1468 * @param dev 1469 * Pointer to Ethernet device. 1470 */ 1471 static void 1472 mlx5_dev_shared_handler_devx_uninstall(struct rte_eth_dev *dev) 1473 { 1474 struct mlx5_priv *priv = dev->data->dev_private; 1475 struct mlx5_ibv_shared *sh = priv->sh; 1476 1477 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1478 return; 1479 pthread_mutex_lock(&sh->intr_mutex); 1480 MLX5_ASSERT(priv->ibv_port); 1481 MLX5_ASSERT(priv->ibv_port <= sh->max_port); 1482 MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); 1483 if (sh->port[priv->ibv_port - 1].devx_ih_port_id >= RTE_MAX_ETHPORTS) 1484 goto exit; 1485 MLX5_ASSERT(sh->port[priv->ibv_port - 1].devx_ih_port_id == 1486 (uint32_t)dev->data->port_id); 1487 sh->port[priv->ibv_port - 1].devx_ih_port_id = RTE_MAX_ETHPORTS; 1488 if (!sh->devx_intr_cnt || --sh->devx_intr_cnt) 1489 goto exit; 1490 if (sh->intr_handle_devx.fd) { 1491 rte_intr_callback_unregister(&sh->intr_handle_devx, 1492 mlx5_dev_interrupt_handler_devx, 1493 sh); 1494 sh->intr_handle_devx.fd = 0; 1495 sh->intr_handle_devx.type = RTE_INTR_HANDLE_UNKNOWN; 1496 } 1497 if (sh->devx_comp) { 1498 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp); 1499 sh->devx_comp = NULL; 1500 } 1501 exit: 1502 pthread_mutex_unlock(&sh->intr_mutex); 1503 } 1504 1505 /** 1506 * Install shared asynchronous device events handler. 1507 * This function is implemented to support event sharing 1508 * between multiple ports of single IB device. 1509 * 1510 * @param dev 1511 * Pointer to Ethernet device. 1512 */ 1513 static void 1514 mlx5_dev_shared_handler_install(struct rte_eth_dev *dev) 1515 { 1516 struct mlx5_priv *priv = dev->data->dev_private; 1517 struct mlx5_ibv_shared *sh = priv->sh; 1518 int ret; 1519 int flags; 1520 1521 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1522 return; 1523 pthread_mutex_lock(&sh->intr_mutex); 1524 MLX5_ASSERT(priv->ibv_port); 1525 MLX5_ASSERT(priv->ibv_port <= sh->max_port); 1526 MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); 1527 if (sh->port[priv->ibv_port - 1].ih_port_id < RTE_MAX_ETHPORTS) { 1528 /* The handler is already installed for this port. */ 1529 MLX5_ASSERT(sh->intr_cnt); 1530 goto exit; 1531 } 1532 if (sh->intr_cnt) { 1533 sh->port[priv->ibv_port - 1].ih_port_id = 1534 (uint32_t)dev->data->port_id; 1535 sh->intr_cnt++; 1536 goto exit; 1537 } 1538 /* No shared handler installed. */ 1539 MLX5_ASSERT(sh->ctx->async_fd > 0); 1540 flags = fcntl(sh->ctx->async_fd, F_GETFL); 1541 ret = fcntl(sh->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1542 if (ret) { 1543 DRV_LOG(INFO, "failed to change file descriptor async event" 1544 " queue"); 1545 /* Indicate there will be no interrupts. */ 1546 dev->data->dev_conf.intr_conf.lsc = 0; 1547 dev->data->dev_conf.intr_conf.rmv = 0; 1548 } else { 1549 sh->intr_handle.fd = sh->ctx->async_fd; 1550 sh->intr_handle.type = RTE_INTR_HANDLE_EXT; 1551 rte_intr_callback_register(&sh->intr_handle, 1552 mlx5_dev_interrupt_handler, sh); 1553 sh->intr_cnt++; 1554 sh->port[priv->ibv_port - 1].ih_port_id = 1555 (uint32_t)dev->data->port_id; 1556 } 1557 exit: 1558 pthread_mutex_unlock(&sh->intr_mutex); 1559 } 1560 1561 /** 1562 * Install devx shared asyncronous device events handler. 1563 * This function is implemeted to support event sharing 1564 * between multiple ports of single IB device. 1565 * 1566 * @param dev 1567 * Pointer to Ethernet device. 1568 */ 1569 static void 1570 mlx5_dev_shared_handler_devx_install(struct rte_eth_dev *dev) 1571 { 1572 struct mlx5_priv *priv = dev->data->dev_private; 1573 struct mlx5_ibv_shared *sh = priv->sh; 1574 1575 if (rte_eal_process_type() != RTE_PROC_PRIMARY) 1576 return; 1577 pthread_mutex_lock(&sh->intr_mutex); 1578 MLX5_ASSERT(priv->ibv_port); 1579 MLX5_ASSERT(priv->ibv_port <= sh->max_port); 1580 MLX5_ASSERT(dev->data->port_id < RTE_MAX_ETHPORTS); 1581 if (sh->port[priv->ibv_port - 1].devx_ih_port_id < RTE_MAX_ETHPORTS) { 1582 /* The handler is already installed for this port. */ 1583 MLX5_ASSERT(sh->devx_intr_cnt); 1584 goto exit; 1585 } 1586 if (sh->devx_intr_cnt) { 1587 sh->devx_intr_cnt++; 1588 sh->port[priv->ibv_port - 1].devx_ih_port_id = 1589 (uint32_t)dev->data->port_id; 1590 goto exit; 1591 } 1592 if (priv->config.devx) { 1593 #ifndef HAVE_IBV_DEVX_ASYNC 1594 goto exit; 1595 #else 1596 sh->devx_comp = mlx5_glue->devx_create_cmd_comp(sh->ctx); 1597 if (sh->devx_comp) { 1598 int flags = fcntl(sh->devx_comp->fd, F_GETFL); 1599 int ret = fcntl(sh->devx_comp->fd, F_SETFL, 1600 flags | O_NONBLOCK); 1601 1602 if (ret) { 1603 DRV_LOG(INFO, "failed to change file descriptor" 1604 " devx async event queue"); 1605 } else { 1606 sh->intr_handle_devx.fd = sh->devx_comp->fd; 1607 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT; 1608 rte_intr_callback_register 1609 (&sh->intr_handle_devx, 1610 mlx5_dev_interrupt_handler_devx, sh); 1611 sh->devx_intr_cnt++; 1612 sh->port[priv->ibv_port - 1].devx_ih_port_id = 1613 (uint32_t)dev->data->port_id; 1614 } 1615 } 1616 #endif /* HAVE_IBV_DEVX_ASYNC */ 1617 } 1618 exit: 1619 pthread_mutex_unlock(&sh->intr_mutex); 1620 } 1621 1622 /** 1623 * Uninstall interrupt handler. 1624 * 1625 * @param dev 1626 * Pointer to Ethernet device. 1627 */ 1628 void 1629 mlx5_dev_interrupt_handler_uninstall(struct rte_eth_dev *dev) 1630 { 1631 mlx5_dev_shared_handler_uninstall(dev); 1632 } 1633 1634 /** 1635 * Install interrupt handler. 1636 * 1637 * @param dev 1638 * Pointer to Ethernet device. 1639 */ 1640 void 1641 mlx5_dev_interrupt_handler_install(struct rte_eth_dev *dev) 1642 { 1643 mlx5_dev_shared_handler_install(dev); 1644 } 1645 1646 /** 1647 * Devx uninstall interrupt handler. 1648 * 1649 * @param dev 1650 * Pointer to Ethernet device. 1651 */ 1652 void 1653 mlx5_dev_interrupt_handler_devx_uninstall(struct rte_eth_dev *dev) 1654 { 1655 mlx5_dev_shared_handler_devx_uninstall(dev); 1656 } 1657 1658 /** 1659 * Devx install interrupt handler. 1660 * 1661 * @param dev 1662 * Pointer to Ethernet device. 1663 */ 1664 void 1665 mlx5_dev_interrupt_handler_devx_install(struct rte_eth_dev *dev) 1666 { 1667 mlx5_dev_shared_handler_devx_install(dev); 1668 } 1669 1670 /** 1671 * DPDK callback to bring the link DOWN. 1672 * 1673 * @param dev 1674 * Pointer to Ethernet device structure. 1675 * 1676 * @return 1677 * 0 on success, a negative errno value otherwise and rte_errno is set. 1678 */ 1679 int 1680 mlx5_set_link_down(struct rte_eth_dev *dev) 1681 { 1682 return mlx5_set_flags(dev, ~IFF_UP, ~IFF_UP); 1683 } 1684 1685 /** 1686 * DPDK callback to bring the link UP. 1687 * 1688 * @param dev 1689 * Pointer to Ethernet device structure. 1690 * 1691 * @return 1692 * 0 on success, a negative errno value otherwise and rte_errno is set. 1693 */ 1694 int 1695 mlx5_set_link_up(struct rte_eth_dev *dev) 1696 { 1697 return mlx5_set_flags(dev, ~IFF_UP, IFF_UP); 1698 } 1699 1700 /** 1701 * Configure the RX function to use. 1702 * 1703 * @param dev 1704 * Pointer to private data structure. 1705 * 1706 * @return 1707 * Pointer to selected Rx burst function. 1708 */ 1709 eth_rx_burst_t 1710 mlx5_select_rx_function(struct rte_eth_dev *dev) 1711 { 1712 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1713 1714 MLX5_ASSERT(dev != NULL); 1715 if (mlx5_check_vec_rx_support(dev) > 0) { 1716 rx_pkt_burst = mlx5_rx_burst_vec; 1717 DRV_LOG(DEBUG, "port %u selected Rx vectorized function", 1718 dev->data->port_id); 1719 } else if (mlx5_mprq_enabled(dev)) { 1720 rx_pkt_burst = mlx5_rx_burst_mprq; 1721 } 1722 return rx_pkt_burst; 1723 } 1724 1725 /** 1726 * Check if mlx5 device was removed. 1727 * 1728 * @param dev 1729 * Pointer to Ethernet device structure. 1730 * 1731 * @return 1732 * 1 when device is removed, otherwise 0. 1733 */ 1734 int 1735 mlx5_is_removed(struct rte_eth_dev *dev) 1736 { 1737 struct ibv_device_attr device_attr; 1738 struct mlx5_priv *priv = dev->data->dev_private; 1739 1740 if (mlx5_glue->query_device(priv->sh->ctx, &device_attr) == EIO) 1741 return 1; 1742 return 0; 1743 } 1744 1745 /** 1746 * Get the E-Switch parameters by port id. 1747 * 1748 * @param[in] port 1749 * Device port id. 1750 * @param[in] valid 1751 * Device port id is valid, skip check. This flag is useful 1752 * when trials are performed from probing and device is not 1753 * flagged as valid yet (in attaching process). 1754 * @param[out] es_domain_id 1755 * E-Switch domain id. 1756 * @param[out] es_port_id 1757 * The port id of the port in the E-Switch. 1758 * 1759 * @return 1760 * pointer to device private data structure containing data needed 1761 * on success, NULL otherwise and rte_errno is set. 1762 */ 1763 struct mlx5_priv * 1764 mlx5_port_to_eswitch_info(uint16_t port, bool valid) 1765 { 1766 struct rte_eth_dev *dev; 1767 struct mlx5_priv *priv; 1768 1769 if (port >= RTE_MAX_ETHPORTS) { 1770 rte_errno = EINVAL; 1771 return NULL; 1772 } 1773 if (!valid && !rte_eth_dev_is_valid_port(port)) { 1774 rte_errno = ENODEV; 1775 return NULL; 1776 } 1777 dev = &rte_eth_devices[port]; 1778 priv = dev->data->dev_private; 1779 if (!(priv->representor || priv->master)) { 1780 rte_errno = EINVAL; 1781 return NULL; 1782 } 1783 return priv; 1784 } 1785 1786 /** 1787 * Get the E-Switch parameters by device instance. 1788 * 1789 * @param[in] port 1790 * Device port id. 1791 * @param[out] es_domain_id 1792 * E-Switch domain id. 1793 * @param[out] es_port_id 1794 * The port id of the port in the E-Switch. 1795 * 1796 * @return 1797 * pointer to device private data structure containing data needed 1798 * on success, NULL otherwise and rte_errno is set. 1799 */ 1800 struct mlx5_priv * 1801 mlx5_dev_to_eswitch_info(struct rte_eth_dev *dev) 1802 { 1803 struct mlx5_priv *priv; 1804 1805 priv = dev->data->dev_private; 1806 if (!(priv->representor || priv->master)) { 1807 rte_errno = EINVAL; 1808 return NULL; 1809 } 1810 return priv; 1811 } 1812 1813 /** 1814 * Get switch information associated with network interface. 1815 * 1816 * @param ifindex 1817 * Network interface index. 1818 * @param[out] info 1819 * Switch information object, populated in case of success. 1820 * 1821 * @return 1822 * 0 on success, a negative errno value otherwise and rte_errno is set. 1823 */ 1824 int 1825 mlx5_sysfs_switch_info(unsigned int ifindex, struct mlx5_switch_info *info) 1826 { 1827 char ifname[IF_NAMESIZE]; 1828 char port_name[IF_NAMESIZE]; 1829 FILE *file; 1830 struct mlx5_switch_info data = { 1831 .master = 0, 1832 .representor = 0, 1833 .name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET, 1834 .port_name = 0, 1835 .switch_id = 0, 1836 }; 1837 DIR *dir; 1838 bool port_switch_id_set = false; 1839 bool device_dir = false; 1840 char c; 1841 int ret; 1842 1843 if (!if_indextoname(ifindex, ifname)) { 1844 rte_errno = errno; 1845 return -rte_errno; 1846 } 1847 1848 MKSTR(phys_port_name, "/sys/class/net/%s/phys_port_name", 1849 ifname); 1850 MKSTR(phys_switch_id, "/sys/class/net/%s/phys_switch_id", 1851 ifname); 1852 MKSTR(pci_device, "/sys/class/net/%s/device", 1853 ifname); 1854 1855 file = fopen(phys_port_name, "rb"); 1856 if (file != NULL) { 1857 ret = fscanf(file, "%s", port_name); 1858 fclose(file); 1859 if (ret == 1) 1860 mlx5_translate_port_name(port_name, &data); 1861 } 1862 file = fopen(phys_switch_id, "rb"); 1863 if (file == NULL) { 1864 rte_errno = errno; 1865 return -rte_errno; 1866 } 1867 port_switch_id_set = 1868 fscanf(file, "%" SCNx64 "%c", &data.switch_id, &c) == 2 && 1869 c == '\n'; 1870 fclose(file); 1871 dir = opendir(pci_device); 1872 if (dir != NULL) { 1873 closedir(dir); 1874 device_dir = true; 1875 } 1876 if (port_switch_id_set) { 1877 /* We have some E-Switch configuration. */ 1878 mlx5_sysfs_check_switch_info(device_dir, &data); 1879 } 1880 *info = data; 1881 MLX5_ASSERT(!(data.master && data.representor)); 1882 if (data.master && data.representor) { 1883 DRV_LOG(ERR, "ifindex %u device is recognized as master" 1884 " and as representor", ifindex); 1885 rte_errno = ENODEV; 1886 return -rte_errno; 1887 } 1888 return 0; 1889 } 1890 1891 /** 1892 * Analyze gathered port parameters via sysfs to recognize master 1893 * and representor devices for E-Switch configuration. 1894 * 1895 * @param[in] device_dir 1896 * flag of presence of "device" directory under port device key. 1897 * @param[inout] switch_info 1898 * Port information, including port name as a number and port name 1899 * type if recognized 1900 * 1901 * @return 1902 * master and representor flags are set in switch_info according to 1903 * recognized parameters (if any). 1904 */ 1905 void 1906 mlx5_sysfs_check_switch_info(bool device_dir, 1907 struct mlx5_switch_info *switch_info) 1908 { 1909 switch (switch_info->name_type) { 1910 case MLX5_PHYS_PORT_NAME_TYPE_UNKNOWN: 1911 /* 1912 * Name is not recognized, assume the master, 1913 * check the device directory presence. 1914 */ 1915 switch_info->master = device_dir; 1916 break; 1917 case MLX5_PHYS_PORT_NAME_TYPE_NOTSET: 1918 /* 1919 * Name is not set, this assumes the legacy naming 1920 * schema for master, just check if there is 1921 * a device directory. 1922 */ 1923 switch_info->master = device_dir; 1924 break; 1925 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: 1926 /* New uplink naming schema recognized. */ 1927 switch_info->master = 1; 1928 break; 1929 case MLX5_PHYS_PORT_NAME_TYPE_LEGACY: 1930 /* Legacy representors naming schema. */ 1931 switch_info->representor = !device_dir; 1932 break; 1933 case MLX5_PHYS_PORT_NAME_TYPE_PFVF: 1934 /* New representors naming schema. */ 1935 switch_info->representor = 1; 1936 break; 1937 } 1938 } 1939 1940 /** 1941 * DPDK callback to retrieve plug-in module EEPROM information (type and size). 1942 * 1943 * @param dev 1944 * Pointer to Ethernet device structure. 1945 * @param[out] modinfo 1946 * Storage for plug-in module EEPROM information. 1947 * 1948 * @return 1949 * 0 on success, a negative errno value otherwise and rte_errno is set. 1950 */ 1951 int 1952 mlx5_get_module_info(struct rte_eth_dev *dev, 1953 struct rte_eth_dev_module_info *modinfo) 1954 { 1955 struct ethtool_modinfo info = { 1956 .cmd = ETHTOOL_GMODULEINFO, 1957 }; 1958 struct ifreq ifr = (struct ifreq) { 1959 .ifr_data = (void *)&info, 1960 }; 1961 int ret = 0; 1962 1963 if (!dev || !modinfo) { 1964 DRV_LOG(WARNING, "missing argument, cannot get module info"); 1965 rte_errno = EINVAL; 1966 return -rte_errno; 1967 } 1968 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 1969 if (ret) { 1970 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s", 1971 dev->data->port_id, strerror(rte_errno)); 1972 return ret; 1973 } 1974 modinfo->type = info.type; 1975 modinfo->eeprom_len = info.eeprom_len; 1976 return ret; 1977 } 1978 1979 /** 1980 * DPDK callback to retrieve plug-in module EEPROM data. 1981 * 1982 * @param dev 1983 * Pointer to Ethernet device structure. 1984 * @param[out] info 1985 * Storage for plug-in module EEPROM data. 1986 * 1987 * @return 1988 * 0 on success, a negative errno value otherwise and rte_errno is set. 1989 */ 1990 int mlx5_get_module_eeprom(struct rte_eth_dev *dev, 1991 struct rte_dev_eeprom_info *info) 1992 { 1993 struct ethtool_eeprom *eeprom; 1994 struct ifreq ifr; 1995 int ret = 0; 1996 1997 if (!dev || !info) { 1998 DRV_LOG(WARNING, "missing argument, cannot get module eeprom"); 1999 rte_errno = EINVAL; 2000 return -rte_errno; 2001 } 2002 eeprom = rte_calloc(__func__, 1, 2003 (sizeof(struct ethtool_eeprom) + info->length), 0); 2004 if (!eeprom) { 2005 DRV_LOG(WARNING, "port %u cannot allocate memory for " 2006 "eeprom data", dev->data->port_id); 2007 rte_errno = ENOMEM; 2008 return -rte_errno; 2009 } 2010 eeprom->cmd = ETHTOOL_GMODULEEEPROM; 2011 eeprom->offset = info->offset; 2012 eeprom->len = info->length; 2013 ifr = (struct ifreq) { 2014 .ifr_data = (void *)eeprom, 2015 }; 2016 ret = mlx5_ifreq(dev, SIOCETHTOOL, &ifr); 2017 if (ret) 2018 DRV_LOG(WARNING, "port %u ioctl(SIOCETHTOOL) failed: %s", 2019 dev->data->port_id, strerror(rte_errno)); 2020 else 2021 rte_memcpy(info->data, eeprom->data, info->length); 2022 rte_free(eeprom); 2023 return ret; 2024 } 2025 2026 /** 2027 * DPDK callback to retrieve hairpin capabilities. 2028 * 2029 * @param dev 2030 * Pointer to Ethernet device structure. 2031 * @param[out] cap 2032 * Storage for hairpin capability data. 2033 * 2034 * @return 2035 * 0 on success, a negative errno value otherwise and rte_errno is set. 2036 */ 2037 int mlx5_hairpin_cap_get(struct rte_eth_dev *dev, 2038 struct rte_eth_hairpin_cap *cap) 2039 { 2040 struct mlx5_priv *priv = dev->data->dev_private; 2041 2042 if (priv->sh->devx == 0) { 2043 rte_errno = ENOTSUP; 2044 return -rte_errno; 2045 } 2046 cap->max_nb_queues = UINT16_MAX; 2047 cap->max_rx_2_tx = 1; 2048 cap->max_tx_2_rx = 1; 2049 cap->max_nb_desc = 8192; 2050 return 0; 2051 } 2052