1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright 2015 6WIND S.A. 3 * Copyright 2015 Mellanox. 4 */ 5 6 #define _GNU_SOURCE 7 8 #include <stddef.h> 9 #include <assert.h> 10 #include <inttypes.h> 11 #include <unistd.h> 12 #include <stdint.h> 13 #include <stdio.h> 14 #include <string.h> 15 #include <stdlib.h> 16 #include <errno.h> 17 #include <dirent.h> 18 #include <net/if.h> 19 #include <sys/ioctl.h> 20 #include <sys/socket.h> 21 #include <sys/utsname.h> 22 #include <netinet/in.h> 23 #include <linux/ethtool.h> 24 #include <linux/sockios.h> 25 #include <linux/version.h> 26 #include <fcntl.h> 27 #include <stdalign.h> 28 #include <sys/un.h> 29 30 #include <rte_atomic.h> 31 #include <rte_ethdev_driver.h> 32 #include <rte_bus_pci.h> 33 #include <rte_mbuf.h> 34 #include <rte_common.h> 35 #include <rte_interrupts.h> 36 #include <rte_alarm.h> 37 #include <rte_malloc.h> 38 39 #include "mlx5.h" 40 #include "mlx5_glue.h" 41 #include "mlx5_rxtx.h" 42 #include "mlx5_utils.h" 43 44 /* Add defines in case the running kernel is not the same as user headers. */ 45 #ifndef ETHTOOL_GLINKSETTINGS 46 struct ethtool_link_settings { 47 uint32_t cmd; 48 uint32_t speed; 49 uint8_t duplex; 50 uint8_t port; 51 uint8_t phy_address; 52 uint8_t autoneg; 53 uint8_t mdio_support; 54 uint8_t eth_to_mdix; 55 uint8_t eth_tp_mdix_ctrl; 56 int8_t link_mode_masks_nwords; 57 uint32_t reserved[8]; 58 uint32_t link_mode_masks[]; 59 }; 60 61 #define ETHTOOL_GLINKSETTINGS 0x0000004c 62 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5 63 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6 64 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17 65 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18 66 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19 67 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20 68 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21 69 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22 70 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23 71 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24 72 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25 73 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26 74 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27 75 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28 76 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29 77 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30 78 #endif 79 #ifndef HAVE_ETHTOOL_LINK_MODE_25G 80 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31 81 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32 82 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33 83 #endif 84 #ifndef HAVE_ETHTOOL_LINK_MODE_50G 85 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34 86 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35 87 #endif 88 #ifndef HAVE_ETHTOOL_LINK_MODE_100G 89 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36 90 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37 91 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38 92 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39 93 #endif 94 95 /** 96 * Get interface name from private structure. 97 * 98 * @param[in] priv 99 * Pointer to private structure. 100 * @param[out] ifname 101 * Interface name output buffer. 102 * 103 * @return 104 * 0 on success, -1 on failure and errno is set. 105 */ 106 int 107 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) 108 { 109 DIR *dir; 110 struct dirent *dent; 111 unsigned int dev_type = 0; 112 unsigned int dev_port_prev = ~0u; 113 char match[IF_NAMESIZE] = ""; 114 115 { 116 MKSTR(path, "%s/device/net", priv->ibdev_path); 117 118 dir = opendir(path); 119 if (dir == NULL) 120 return -1; 121 } 122 while ((dent = readdir(dir)) != NULL) { 123 char *name = dent->d_name; 124 FILE *file; 125 unsigned int dev_port; 126 int r; 127 128 if ((name[0] == '.') && 129 ((name[1] == '\0') || 130 ((name[1] == '.') && (name[2] == '\0')))) 131 continue; 132 133 MKSTR(path, "%s/device/net/%s/%s", 134 priv->ibdev_path, name, 135 (dev_type ? "dev_id" : "dev_port")); 136 137 file = fopen(path, "rb"); 138 if (file == NULL) { 139 if (errno != ENOENT) 140 continue; 141 /* 142 * Switch to dev_id when dev_port does not exist as 143 * is the case with Linux kernel versions < 3.15. 144 */ 145 try_dev_id: 146 match[0] = '\0'; 147 if (dev_type) 148 break; 149 dev_type = 1; 150 dev_port_prev = ~0u; 151 rewinddir(dir); 152 continue; 153 } 154 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); 155 fclose(file); 156 if (r != 1) 157 continue; 158 /* 159 * Switch to dev_id when dev_port returns the same value for 160 * all ports. May happen when using a MOFED release older than 161 * 3.0 with a Linux kernel >= 3.15. 162 */ 163 if (dev_port == dev_port_prev) 164 goto try_dev_id; 165 dev_port_prev = dev_port; 166 if (dev_port == (priv->port - 1u)) 167 snprintf(match, sizeof(match), "%s", name); 168 } 169 closedir(dir); 170 if (match[0] == '\0') 171 return -1; 172 strncpy(*ifname, match, sizeof(*ifname)); 173 return 0; 174 } 175 176 /** 177 * Perform ifreq ioctl() on associated Ethernet device. 178 * 179 * @param[in] priv 180 * Pointer to private structure. 181 * @param req 182 * Request number to pass to ioctl(). 183 * @param[out] ifr 184 * Interface request structure output buffer. 185 * 186 * @return 187 * 0 on success, -1 on failure and errno is set. 188 */ 189 int 190 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr) 191 { 192 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 193 int ret = -1; 194 195 if (sock == -1) 196 return ret; 197 if (priv_get_ifname(priv, &ifr->ifr_name) == 0) 198 ret = ioctl(sock, req, ifr); 199 close(sock); 200 return ret; 201 } 202 203 /** 204 * Return the number of active VFs for the current device. 205 * 206 * @param[in] priv 207 * Pointer to private structure. 208 * @param[out] num_vfs 209 * Number of active VFs. 210 * 211 * @return 212 * 0 on success, -1 on failure and errno is set. 213 */ 214 int 215 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) 216 { 217 /* The sysfs entry name depends on the operating system. */ 218 const char **name = (const char *[]){ 219 "sriov_numvfs", 220 "mlx5_num_vfs", 221 NULL, 222 }; 223 224 do { 225 int n; 226 FILE *file; 227 MKSTR(path, "%s/device/%s", priv->ibdev_path, *name); 228 229 file = fopen(path, "rb"); 230 if (!file) 231 continue; 232 n = fscanf(file, "%" SCNu16, num_vfs); 233 fclose(file); 234 if (n == 1) 235 return 0; 236 } while (*(++name)); 237 return -1; 238 } 239 240 /** 241 * Get device MTU. 242 * 243 * @param priv 244 * Pointer to private structure. 245 * @param[out] mtu 246 * MTU value output buffer. 247 * 248 * @return 249 * 0 on success, -1 on failure and errno is set. 250 */ 251 int 252 priv_get_mtu(struct priv *priv, uint16_t *mtu) 253 { 254 struct ifreq request; 255 int ret = priv_ifreq(priv, SIOCGIFMTU, &request); 256 257 if (ret) 258 return ret; 259 *mtu = request.ifr_mtu; 260 return 0; 261 } 262 263 /** 264 * Set device MTU. 265 * 266 * @param priv 267 * Pointer to private structure. 268 * @param mtu 269 * MTU value to set. 270 * 271 * @return 272 * 0 on success, -1 on failure and errno is set. 273 */ 274 static int 275 priv_set_mtu(struct priv *priv, uint16_t mtu) 276 { 277 struct ifreq request = { .ifr_mtu = mtu, }; 278 279 return priv_ifreq(priv, SIOCSIFMTU, &request); 280 } 281 282 /** 283 * Set device flags. 284 * 285 * @param priv 286 * Pointer to private structure. 287 * @param keep 288 * Bitmask for flags that must remain untouched. 289 * @param flags 290 * Bitmask for flags to modify. 291 * 292 * @return 293 * 0 on success, -1 on failure and errno is set. 294 */ 295 int 296 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) 297 { 298 struct ifreq request; 299 int ret = priv_ifreq(priv, SIOCGIFFLAGS, &request); 300 301 if (ret) 302 return ret; 303 request.ifr_flags &= keep; 304 request.ifr_flags |= flags & ~keep; 305 return priv_ifreq(priv, SIOCSIFFLAGS, &request); 306 } 307 308 /** 309 * Ethernet device configuration. 310 * 311 * Prepare the driver for a given number of TX and RX queues. 312 * 313 * @param dev 314 * Pointer to Ethernet device structure. 315 * 316 * @return 317 * 0 on success, errno value on failure. 318 */ 319 static int 320 dev_configure(struct rte_eth_dev *dev) 321 { 322 struct priv *priv = dev->data->dev_private; 323 unsigned int rxqs_n = dev->data->nb_rx_queues; 324 unsigned int txqs_n = dev->data->nb_tx_queues; 325 unsigned int i; 326 unsigned int j; 327 unsigned int reta_idx_n; 328 const uint8_t use_app_rss_key = 329 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 330 uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv); 331 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 332 uint64_t supp_rx_offloads = 333 (mlx5_priv_get_rx_port_offloads(priv) | 334 mlx5_priv_get_rx_queue_offloads(priv)); 335 uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads; 336 337 if ((tx_offloads & supp_tx_offloads) != tx_offloads) { 338 ERROR("Some Tx offloads are not supported " 339 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 340 tx_offloads, supp_tx_offloads); 341 return ENOTSUP; 342 } 343 if ((rx_offloads & supp_rx_offloads) != rx_offloads) { 344 ERROR("Some Rx offloads are not supported " 345 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 346 rx_offloads, supp_rx_offloads); 347 return ENOTSUP; 348 } 349 if (use_app_rss_key && 350 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 351 rss_hash_default_key_len)) { 352 /* MLX5 RSS only support 40bytes key. */ 353 return EINVAL; 354 } 355 priv->rss_conf.rss_key = 356 rte_realloc(priv->rss_conf.rss_key, 357 rss_hash_default_key_len, 0); 358 if (!priv->rss_conf.rss_key) { 359 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 360 return ENOMEM; 361 } 362 memcpy(priv->rss_conf.rss_key, 363 use_app_rss_key ? 364 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 365 rss_hash_default_key, 366 rss_hash_default_key_len); 367 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 368 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 369 priv->rxqs = (void *)dev->data->rx_queues; 370 priv->txqs = (void *)dev->data->tx_queues; 371 if (txqs_n != priv->txqs_n) { 372 INFO("%p: TX queues number update: %u -> %u", 373 (void *)dev, priv->txqs_n, txqs_n); 374 priv->txqs_n = txqs_n; 375 } 376 if (rxqs_n > priv->config.ind_table_max_size) { 377 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 378 return EINVAL; 379 } 380 if (rxqs_n == priv->rxqs_n) 381 return 0; 382 INFO("%p: RX queues number update: %u -> %u", 383 (void *)dev, priv->rxqs_n, rxqs_n); 384 priv->rxqs_n = rxqs_n; 385 /* If the requested number of RX queues is not a power of two, use the 386 * maximum indirection table size for better balancing. 387 * The result is always rounded to the next power of two. */ 388 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 389 priv->config.ind_table_max_size : 390 rxqs_n)); 391 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 392 return ENOMEM; 393 /* When the number of RX queues is not a power of two, the remaining 394 * table entries are padded with reused WQs and hashes are not spread 395 * uniformly. */ 396 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 397 (*priv->reta_idx)[i] = j; 398 if (++j == rxqs_n) 399 j = 0; 400 } 401 return 0; 402 } 403 404 /** 405 * DPDK callback for Ethernet device configuration. 406 * 407 * @param dev 408 * Pointer to Ethernet device structure. 409 * 410 * @return 411 * 0 on success, negative errno value on failure. 412 */ 413 int 414 mlx5_dev_configure(struct rte_eth_dev *dev) 415 { 416 struct priv *priv = dev->data->dev_private; 417 int ret; 418 419 priv_lock(priv); 420 ret = dev_configure(dev); 421 assert(ret >= 0); 422 priv_unlock(priv); 423 return -ret; 424 } 425 426 /** 427 * DPDK callback to get information about the device. 428 * 429 * @param dev 430 * Pointer to Ethernet device structure. 431 * @param[out] info 432 * Info structure output buffer. 433 */ 434 void 435 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 436 { 437 struct priv *priv = dev->data->dev_private; 438 struct mlx5_dev_config *config = &priv->config; 439 unsigned int max; 440 char ifname[IF_NAMESIZE]; 441 442 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 443 444 priv_lock(priv); 445 /* FIXME: we should ask the device for these values. */ 446 info->min_rx_bufsize = 32; 447 info->max_rx_pktlen = 65536; 448 /* 449 * Since we need one CQ per QP, the limit is the minimum number 450 * between the two values. 451 */ 452 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 453 priv->device_attr.orig_attr.max_qp); 454 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 455 if (max >= 65535) 456 max = 65535; 457 info->max_rx_queues = max; 458 info->max_tx_queues = max; 459 info->max_mac_addrs = RTE_DIM(priv->mac); 460 info->rx_queue_offload_capa = 461 mlx5_priv_get_rx_queue_offloads(priv); 462 info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) | 463 info->rx_queue_offload_capa); 464 info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv); 465 if (priv_get_ifname(priv, &ifname) == 0) 466 info->if_index = if_nametoindex(ifname); 467 info->reta_size = priv->reta_idx_n ? 468 priv->reta_idx_n : config->ind_table_max_size; 469 info->hash_key_size = priv->rss_conf.rss_key_len; 470 info->speed_capa = priv->link_speed_capa; 471 info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK; 472 priv_unlock(priv); 473 } 474 475 const uint32_t * 476 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 477 { 478 static const uint32_t ptypes[] = { 479 /* refers to rxq_cq_to_pkt_type() */ 480 RTE_PTYPE_L2_ETHER, 481 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 482 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 483 RTE_PTYPE_L4_NONFRAG, 484 RTE_PTYPE_L4_FRAG, 485 RTE_PTYPE_L4_TCP, 486 RTE_PTYPE_L4_UDP, 487 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 488 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 489 RTE_PTYPE_INNER_L4_NONFRAG, 490 RTE_PTYPE_INNER_L4_FRAG, 491 RTE_PTYPE_INNER_L4_TCP, 492 RTE_PTYPE_INNER_L4_UDP, 493 RTE_PTYPE_UNKNOWN 494 }; 495 496 if (dev->rx_pkt_burst == mlx5_rx_burst || 497 dev->rx_pkt_burst == mlx5_rx_burst_vec) 498 return ptypes; 499 return NULL; 500 } 501 502 /** 503 * DPDK callback to retrieve physical link information. 504 * 505 * @param dev 506 * Pointer to Ethernet device structure. 507 * @param wait_to_complete 508 * Wait for request completion (ignored). 509 */ 510 static int 511 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 512 { 513 struct priv *priv = dev->data->dev_private; 514 struct ethtool_cmd edata = { 515 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 516 }; 517 struct ifreq ifr; 518 struct rte_eth_link dev_link; 519 int link_speed = 0; 520 521 /* priv_lock() is not taken to allow concurrent calls. */ 522 523 (void)wait_to_complete; 524 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 525 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 526 return -1; 527 } 528 memset(&dev_link, 0, sizeof(dev_link)); 529 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 530 (ifr.ifr_flags & IFF_RUNNING)); 531 ifr.ifr_data = (void *)&edata; 532 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 533 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 534 strerror(errno)); 535 return -1; 536 } 537 link_speed = ethtool_cmd_speed(&edata); 538 if (link_speed == -1) 539 dev_link.link_speed = 0; 540 else 541 dev_link.link_speed = link_speed; 542 priv->link_speed_capa = 0; 543 if (edata.supported & SUPPORTED_Autoneg) 544 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 545 if (edata.supported & (SUPPORTED_1000baseT_Full | 546 SUPPORTED_1000baseKX_Full)) 547 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 548 if (edata.supported & SUPPORTED_10000baseKR_Full) 549 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 550 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 551 SUPPORTED_40000baseCR4_Full | 552 SUPPORTED_40000baseSR4_Full | 553 SUPPORTED_40000baseLR4_Full)) 554 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 555 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 556 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 557 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 558 ETH_LINK_SPEED_FIXED); 559 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 560 /* Link status changed. */ 561 dev->data->dev_link = dev_link; 562 return 0; 563 } 564 /* Link status is still the same. */ 565 return -1; 566 } 567 568 /** 569 * Retrieve physical link information (unlocked version using new ioctl). 570 * 571 * @param dev 572 * Pointer to Ethernet device structure. 573 * @param wait_to_complete 574 * Wait for request completion (ignored). 575 */ 576 static int 577 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 578 { 579 struct priv *priv = dev->data->dev_private; 580 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 581 struct ifreq ifr; 582 struct rte_eth_link dev_link; 583 uint64_t sc; 584 585 (void)wait_to_complete; 586 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 587 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 588 return -1; 589 } 590 memset(&dev_link, 0, sizeof(dev_link)); 591 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 592 (ifr.ifr_flags & IFF_RUNNING)); 593 ifr.ifr_data = (void *)&gcmd; 594 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 595 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 596 strerror(errno)); 597 return -1; 598 } 599 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 600 601 alignas(struct ethtool_link_settings) 602 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 603 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 604 struct ethtool_link_settings *ecmd = (void *)data; 605 606 *ecmd = gcmd; 607 ifr.ifr_data = (void *)ecmd; 608 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 609 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 610 strerror(errno)); 611 return -1; 612 } 613 dev_link.link_speed = ecmd->speed; 614 sc = ecmd->link_mode_masks[0] | 615 ((uint64_t)ecmd->link_mode_masks[1] << 32); 616 priv->link_speed_capa = 0; 617 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 618 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 619 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 620 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 621 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 622 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 623 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 624 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 625 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 626 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 627 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 628 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 629 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 630 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 631 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 632 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 633 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 634 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 635 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 636 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 637 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 638 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 639 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 640 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 641 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 642 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 643 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 644 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 645 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 646 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 647 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 648 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 649 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 650 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 651 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 652 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 653 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 654 ETH_LINK_SPEED_FIXED); 655 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 656 /* Link status changed. */ 657 dev->data->dev_link = dev_link; 658 return 0; 659 } 660 /* Link status is still the same. */ 661 return -1; 662 } 663 664 /** 665 * Enable receiving and transmitting traffic. 666 * 667 * @param priv 668 * Pointer to private structure. 669 */ 670 static void 671 priv_link_start(struct priv *priv) 672 { 673 struct rte_eth_dev *dev = priv->dev; 674 int err; 675 676 dev->tx_pkt_burst = priv_select_tx_function(priv, dev); 677 dev->rx_pkt_burst = priv_select_rx_function(priv, dev); 678 err = priv_dev_traffic_enable(priv, dev); 679 if (err) 680 ERROR("%p: error occurred while configuring control flows: %s", 681 (void *)priv, strerror(err)); 682 err = priv_flow_start(priv, &priv->flows); 683 if (err) 684 ERROR("%p: error occurred while configuring flows: %s", 685 (void *)priv, strerror(err)); 686 } 687 688 /** 689 * Disable receiving and transmitting traffic. 690 * 691 * @param priv 692 * Pointer to private structure. 693 */ 694 static void 695 priv_link_stop(struct priv *priv) 696 { 697 struct rte_eth_dev *dev = priv->dev; 698 699 priv_flow_stop(priv, &priv->flows); 700 priv_dev_traffic_disable(priv, dev); 701 dev->rx_pkt_burst = removed_rx_burst; 702 dev->tx_pkt_burst = removed_tx_burst; 703 } 704 705 /** 706 * Retrieve physical link information and update rx/tx_pkt_burst callbacks 707 * accordingly. 708 * 709 * @param priv 710 * Pointer to private structure. 711 * @param wait_to_complete 712 * Wait for request completion (ignored). 713 */ 714 int 715 priv_link_update(struct priv *priv, int wait_to_complete) 716 { 717 struct rte_eth_dev *dev = priv->dev; 718 struct utsname utsname; 719 int ver[3]; 720 int ret; 721 struct rte_eth_link dev_link = dev->data->dev_link; 722 723 if (uname(&utsname) == -1 || 724 sscanf(utsname.release, "%d.%d.%d", 725 &ver[0], &ver[1], &ver[2]) != 3 || 726 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 727 ret = mlx5_link_update_unlocked_gset(dev, wait_to_complete); 728 else 729 ret = mlx5_link_update_unlocked_gs(dev, wait_to_complete); 730 /* If lsc interrupt is disabled, should always be ready for traffic. */ 731 if (!dev->data->dev_conf.intr_conf.lsc) { 732 priv_link_start(priv); 733 return ret; 734 } 735 /* Re-select burst callbacks only if link status has been changed. */ 736 if (!ret && dev_link.link_status != dev->data->dev_link.link_status) { 737 if (dev->data->dev_link.link_status == ETH_LINK_UP) 738 priv_link_start(priv); 739 else 740 priv_link_stop(priv); 741 } 742 return ret; 743 } 744 745 /** 746 * Querying the link status till it changes to the desired state. 747 * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS. 748 * 749 * @param priv 750 * Pointer to private structure. 751 * @param status 752 * Link desired status. 753 * 754 * @return 755 * 0 on success, negative errno value on failure. 756 */ 757 int 758 priv_force_link_status_change(struct priv *priv, int status) 759 { 760 int try = 0; 761 762 while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) { 763 priv_link_update(priv, 0); 764 if (priv->dev->data->dev_link.link_status == status) 765 return 0; 766 try++; 767 sleep(1); 768 } 769 return -EAGAIN; 770 } 771 772 /** 773 * DPDK callback to retrieve physical link information. 774 * 775 * @param dev 776 * Pointer to Ethernet device structure. 777 * @param wait_to_complete 778 * Wait for request completion (ignored). 779 */ 780 int 781 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 782 { 783 struct priv *priv = dev->data->dev_private; 784 int ret; 785 786 priv_lock(priv); 787 ret = priv_link_update(priv, wait_to_complete); 788 priv_unlock(priv); 789 return ret; 790 } 791 792 /** 793 * DPDK callback to change the MTU. 794 * 795 * @param dev 796 * Pointer to Ethernet device structure. 797 * @param in_mtu 798 * New MTU. 799 * 800 * @return 801 * 0 on success, negative errno value on failure. 802 */ 803 int 804 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 805 { 806 struct priv *priv = dev->data->dev_private; 807 uint16_t kern_mtu; 808 int ret = 0; 809 810 priv_lock(priv); 811 ret = priv_get_mtu(priv, &kern_mtu); 812 if (ret) 813 goto out; 814 /* Set kernel interface MTU first. */ 815 ret = priv_set_mtu(priv, mtu); 816 if (ret) 817 goto out; 818 ret = priv_get_mtu(priv, &kern_mtu); 819 if (ret) 820 goto out; 821 if (kern_mtu == mtu) { 822 priv->mtu = mtu; 823 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 824 } 825 priv_unlock(priv); 826 return 0; 827 out: 828 ret = errno; 829 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 830 strerror(ret)); 831 priv_unlock(priv); 832 assert(ret >= 0); 833 return -ret; 834 } 835 836 /** 837 * DPDK callback to get flow control status. 838 * 839 * @param dev 840 * Pointer to Ethernet device structure. 841 * @param[out] fc_conf 842 * Flow control output buffer. 843 * 844 * @return 845 * 0 on success, negative errno value on failure. 846 */ 847 int 848 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 849 { 850 struct priv *priv = dev->data->dev_private; 851 struct ifreq ifr; 852 struct ethtool_pauseparam ethpause = { 853 .cmd = ETHTOOL_GPAUSEPARAM 854 }; 855 int ret; 856 857 ifr.ifr_data = (void *)ðpause; 858 priv_lock(priv); 859 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 860 ret = errno; 861 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 862 " failed: %s", 863 strerror(ret)); 864 goto out; 865 } 866 867 fc_conf->autoneg = ethpause.autoneg; 868 if (ethpause.rx_pause && ethpause.tx_pause) 869 fc_conf->mode = RTE_FC_FULL; 870 else if (ethpause.rx_pause) 871 fc_conf->mode = RTE_FC_RX_PAUSE; 872 else if (ethpause.tx_pause) 873 fc_conf->mode = RTE_FC_TX_PAUSE; 874 else 875 fc_conf->mode = RTE_FC_NONE; 876 ret = 0; 877 878 out: 879 priv_unlock(priv); 880 assert(ret >= 0); 881 return -ret; 882 } 883 884 /** 885 * DPDK callback to modify flow control parameters. 886 * 887 * @param dev 888 * Pointer to Ethernet device structure. 889 * @param[in] fc_conf 890 * Flow control parameters. 891 * 892 * @return 893 * 0 on success, negative errno value on failure. 894 */ 895 int 896 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 897 { 898 struct priv *priv = dev->data->dev_private; 899 struct ifreq ifr; 900 struct ethtool_pauseparam ethpause = { 901 .cmd = ETHTOOL_SPAUSEPARAM 902 }; 903 int ret; 904 905 ifr.ifr_data = (void *)ðpause; 906 ethpause.autoneg = fc_conf->autoneg; 907 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 908 (fc_conf->mode & RTE_FC_RX_PAUSE)) 909 ethpause.rx_pause = 1; 910 else 911 ethpause.rx_pause = 0; 912 913 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 914 (fc_conf->mode & RTE_FC_TX_PAUSE)) 915 ethpause.tx_pause = 1; 916 else 917 ethpause.tx_pause = 0; 918 919 priv_lock(priv); 920 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 921 ret = errno; 922 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 923 " failed: %s", 924 strerror(ret)); 925 goto out; 926 } 927 ret = 0; 928 929 out: 930 priv_unlock(priv); 931 assert(ret >= 0); 932 return -ret; 933 } 934 935 /** 936 * Get PCI information from struct ibv_device. 937 * 938 * @param device 939 * Pointer to Ethernet device structure. 940 * @param[out] pci_addr 941 * PCI bus address output buffer. 942 * 943 * @return 944 * 0 on success, -1 on failure and errno is set. 945 */ 946 int 947 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 948 struct rte_pci_addr *pci_addr) 949 { 950 FILE *file; 951 char line[32]; 952 MKSTR(path, "%s/device/uevent", device->ibdev_path); 953 954 file = fopen(path, "rb"); 955 if (file == NULL) 956 return -1; 957 while (fgets(line, sizeof(line), file) == line) { 958 size_t len = strlen(line); 959 int ret; 960 961 /* Truncate long lines. */ 962 if (len == (sizeof(line) - 1)) 963 while (line[(len - 1)] != '\n') { 964 ret = fgetc(file); 965 if (ret == EOF) 966 break; 967 line[(len - 1)] = ret; 968 } 969 /* Extract information. */ 970 if (sscanf(line, 971 "PCI_SLOT_NAME=" 972 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 973 &pci_addr->domain, 974 &pci_addr->bus, 975 &pci_addr->devid, 976 &pci_addr->function) == 4) { 977 ret = 0; 978 break; 979 } 980 } 981 fclose(file); 982 return 0; 983 } 984 985 /** 986 * Update the link status. 987 * 988 * @param priv 989 * Pointer to private structure. 990 * 991 * @return 992 * Zero if the callback process can be called immediately. 993 */ 994 static int 995 priv_link_status_update(struct priv *priv) 996 { 997 struct rte_eth_link *link = &priv->dev->data->dev_link; 998 999 priv_link_update(priv, 0); 1000 if (((link->link_speed == 0) && link->link_status) || 1001 ((link->link_speed != 0) && !link->link_status)) { 1002 /* 1003 * Inconsistent status. Event likely occurred before the 1004 * kernel netdevice exposes the new status. 1005 */ 1006 if (!priv->pending_alarm) { 1007 priv->pending_alarm = 1; 1008 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 1009 mlx5_dev_link_status_handler, 1010 priv->dev); 1011 } 1012 return 1; 1013 } else if (unlikely(priv->pending_alarm)) { 1014 /* Link interrupt occurred while alarm is already scheduled. */ 1015 priv->pending_alarm = 0; 1016 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 1017 } 1018 return 0; 1019 } 1020 1021 /** 1022 * Device status handler. 1023 * 1024 * @param priv 1025 * Pointer to private structure. 1026 * @param events 1027 * Pointer to event flags holder. 1028 * 1029 * @return 1030 * Events bitmap of callback process which can be called immediately. 1031 */ 1032 static uint32_t 1033 priv_dev_status_handler(struct priv *priv) 1034 { 1035 struct ibv_async_event event; 1036 uint32_t ret = 0; 1037 1038 /* Read all message and acknowledge them. */ 1039 for (;;) { 1040 if (mlx5_glue->get_async_event(priv->ctx, &event)) 1041 break; 1042 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1043 event.event_type == IBV_EVENT_PORT_ERR) && 1044 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1045 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1046 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1047 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1048 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1049 else 1050 DEBUG("event type %d on port %d not handled", 1051 event.event_type, event.element.port_num); 1052 mlx5_glue->ack_async_event(&event); 1053 } 1054 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1055 if (priv_link_status_update(priv)) 1056 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1057 return ret; 1058 } 1059 1060 /** 1061 * Handle delayed link status event. 1062 * 1063 * @param arg 1064 * Registered argument. 1065 */ 1066 void 1067 mlx5_dev_link_status_handler(void *arg) 1068 { 1069 struct rte_eth_dev *dev = arg; 1070 struct priv *priv = dev->data->dev_private; 1071 int ret; 1072 1073 while (!priv_trylock(priv)) { 1074 /* Alarm is being canceled. */ 1075 if (priv->pending_alarm == 0) 1076 return; 1077 rte_pause(); 1078 } 1079 priv->pending_alarm = 0; 1080 ret = priv_link_status_update(priv); 1081 priv_unlock(priv); 1082 if (!ret) 1083 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1084 } 1085 1086 /** 1087 * Handle interrupts from the NIC. 1088 * 1089 * @param[in] intr_handle 1090 * Interrupt handler. 1091 * @param cb_arg 1092 * Callback argument. 1093 */ 1094 void 1095 mlx5_dev_interrupt_handler(void *cb_arg) 1096 { 1097 struct rte_eth_dev *dev = cb_arg; 1098 struct priv *priv = dev->data->dev_private; 1099 uint32_t events; 1100 1101 priv_lock(priv); 1102 events = priv_dev_status_handler(priv); 1103 priv_unlock(priv); 1104 if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) 1105 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1106 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1107 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1108 } 1109 1110 /** 1111 * Handle interrupts from the socket. 1112 * 1113 * @param cb_arg 1114 * Callback argument. 1115 */ 1116 static void 1117 mlx5_dev_handler_socket(void *cb_arg) 1118 { 1119 struct rte_eth_dev *dev = cb_arg; 1120 struct priv *priv = dev->data->dev_private; 1121 1122 priv_lock(priv); 1123 priv_socket_handle(priv); 1124 priv_unlock(priv); 1125 } 1126 1127 /** 1128 * Uninstall interrupt handler. 1129 * 1130 * @param priv 1131 * Pointer to private structure. 1132 * @param dev 1133 * Pointer to the rte_eth_dev structure. 1134 */ 1135 void 1136 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1137 { 1138 if (dev->data->dev_conf.intr_conf.lsc || 1139 dev->data->dev_conf.intr_conf.rmv) 1140 rte_intr_callback_unregister(&priv->intr_handle, 1141 mlx5_dev_interrupt_handler, dev); 1142 if (priv->primary_socket) 1143 rte_intr_callback_unregister(&priv->intr_handle_socket, 1144 mlx5_dev_handler_socket, dev); 1145 if (priv->pending_alarm) { 1146 priv->pending_alarm = 0; 1147 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1148 } 1149 priv->intr_handle.fd = 0; 1150 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1151 priv->intr_handle_socket.fd = 0; 1152 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1153 } 1154 1155 /** 1156 * Install interrupt handler. 1157 * 1158 * @param priv 1159 * Pointer to private structure. 1160 * @param dev 1161 * Pointer to the rte_eth_dev structure. 1162 */ 1163 void 1164 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1165 { 1166 int rc, flags; 1167 1168 assert(priv->ctx->async_fd > 0); 1169 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1170 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1171 if (rc < 0) { 1172 INFO("failed to change file descriptor async event queue"); 1173 dev->data->dev_conf.intr_conf.lsc = 0; 1174 dev->data->dev_conf.intr_conf.rmv = 0; 1175 } 1176 if (dev->data->dev_conf.intr_conf.lsc || 1177 dev->data->dev_conf.intr_conf.rmv) { 1178 priv->intr_handle.fd = priv->ctx->async_fd; 1179 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1180 rte_intr_callback_register(&priv->intr_handle, 1181 mlx5_dev_interrupt_handler, dev); 1182 } 1183 1184 rc = priv_socket_init(priv); 1185 if (!rc && priv->primary_socket) { 1186 priv->intr_handle_socket.fd = priv->primary_socket; 1187 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1188 rte_intr_callback_register(&priv->intr_handle_socket, 1189 mlx5_dev_handler_socket, dev); 1190 } 1191 } 1192 1193 /** 1194 * Change the link state (UP / DOWN). 1195 * 1196 * @param priv 1197 * Pointer to private data structure. 1198 * @param up 1199 * Nonzero for link up, otherwise link down. 1200 * 1201 * @return 1202 * 0 on success, errno value on failure. 1203 */ 1204 static int 1205 priv_dev_set_link(struct priv *priv, int up) 1206 { 1207 return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP); 1208 } 1209 1210 /** 1211 * DPDK callback to bring the link DOWN. 1212 * 1213 * @param dev 1214 * Pointer to Ethernet device structure. 1215 * 1216 * @return 1217 * 0 on success, errno value on failure. 1218 */ 1219 int 1220 mlx5_set_link_down(struct rte_eth_dev *dev) 1221 { 1222 struct priv *priv = dev->data->dev_private; 1223 int err; 1224 1225 priv_lock(priv); 1226 err = priv_dev_set_link(priv, 0); 1227 priv_unlock(priv); 1228 return err; 1229 } 1230 1231 /** 1232 * DPDK callback to bring the link UP. 1233 * 1234 * @param dev 1235 * Pointer to Ethernet device structure. 1236 * 1237 * @return 1238 * 0 on success, errno value on failure. 1239 */ 1240 int 1241 mlx5_set_link_up(struct rte_eth_dev *dev) 1242 { 1243 struct priv *priv = dev->data->dev_private; 1244 int err; 1245 1246 priv_lock(priv); 1247 err = priv_dev_set_link(priv, 1); 1248 priv_unlock(priv); 1249 return err; 1250 } 1251 1252 /** 1253 * Configure the TX function to use. 1254 * 1255 * @param priv 1256 * Pointer to private data structure. 1257 * @param dev 1258 * Pointer to rte_eth_dev structure. 1259 * 1260 * @return 1261 * Pointer to selected Tx burst function. 1262 */ 1263 eth_tx_burst_t 1264 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) 1265 { 1266 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; 1267 struct mlx5_dev_config *config = &priv->config; 1268 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 1269 int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO | 1270 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 1271 DEV_TX_OFFLOAD_GRE_TNL_TSO)); 1272 int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT); 1273 1274 assert(priv != NULL); 1275 /* Select appropriate TX function. */ 1276 if (vlan_insert || tso) 1277 return tx_pkt_burst; 1278 if (config->mps == MLX5_MPW_ENHANCED) { 1279 if (priv_check_vec_tx_support(priv, dev) > 0) { 1280 if (priv_check_raw_vec_tx_support(priv, dev) > 0) 1281 tx_pkt_burst = mlx5_tx_burst_raw_vec; 1282 else 1283 tx_pkt_burst = mlx5_tx_burst_vec; 1284 DEBUG("selected Enhanced MPW TX vectorized function"); 1285 } else { 1286 tx_pkt_burst = mlx5_tx_burst_empw; 1287 DEBUG("selected Enhanced MPW TX function"); 1288 } 1289 } else if (config->mps && (config->txq_inline > 0)) { 1290 tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1291 DEBUG("selected MPW inline TX function"); 1292 } else if (config->mps) { 1293 tx_pkt_burst = mlx5_tx_burst_mpw; 1294 DEBUG("selected MPW TX function"); 1295 } 1296 return tx_pkt_burst; 1297 } 1298 1299 /** 1300 * Configure the RX function to use. 1301 * 1302 * @param priv 1303 * Pointer to private data structure. 1304 * @param dev 1305 * Pointer to rte_eth_dev structure. 1306 * 1307 * @return 1308 * Pointer to selected Rx burst function. 1309 */ 1310 eth_rx_burst_t 1311 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) 1312 { 1313 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1314 1315 assert(priv != NULL); 1316 if (priv_check_vec_rx_support(priv) > 0) { 1317 rx_pkt_burst = mlx5_rx_burst_vec; 1318 DEBUG("selected RX vectorized function"); 1319 } 1320 return rx_pkt_burst; 1321 } 1322 1323 /** 1324 * Check if mlx5 device was removed. 1325 * 1326 * @param dev 1327 * Pointer to Ethernet device structure. 1328 * 1329 * @return 1330 * 1 when device is removed, otherwise 0. 1331 */ 1332 int 1333 mlx5_is_removed(struct rte_eth_dev *dev) 1334 { 1335 struct ibv_device_attr device_attr; 1336 struct priv *priv = dev->data->dev_private; 1337 1338 if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO) 1339 return 1; 1340 return 0; 1341 } 1342