1 /*- 2 * BSD LICENSE 3 * 4 * Copyright 2015 6WIND S.A. 5 * Copyright 2015 Mellanox. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of 6WIND S.A. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #define _GNU_SOURCE 35 36 #include <stddef.h> 37 #include <assert.h> 38 #include <unistd.h> 39 #include <stdint.h> 40 #include <stdio.h> 41 #include <string.h> 42 #include <stdlib.h> 43 #include <errno.h> 44 #include <dirent.h> 45 #include <net/if.h> 46 #include <sys/ioctl.h> 47 #include <sys/socket.h> 48 #include <sys/utsname.h> 49 #include <netinet/in.h> 50 #include <linux/ethtool.h> 51 #include <linux/sockios.h> 52 #include <linux/version.h> 53 #include <fcntl.h> 54 #include <stdalign.h> 55 #include <sys/un.h> 56 57 #include <rte_atomic.h> 58 #include <rte_ethdev.h> 59 #include <rte_bus_pci.h> 60 #include <rte_mbuf.h> 61 #include <rte_common.h> 62 #include <rte_interrupts.h> 63 #include <rte_alarm.h> 64 #include <rte_malloc.h> 65 66 #include "mlx5.h" 67 #include "mlx5_rxtx.h" 68 #include "mlx5_utils.h" 69 70 /* Add defines in case the running kernel is not the same as user headers. */ 71 #ifndef ETHTOOL_GLINKSETTINGS 72 struct ethtool_link_settings { 73 uint32_t cmd; 74 uint32_t speed; 75 uint8_t duplex; 76 uint8_t port; 77 uint8_t phy_address; 78 uint8_t autoneg; 79 uint8_t mdio_support; 80 uint8_t eth_to_mdix; 81 uint8_t eth_tp_mdix_ctrl; 82 int8_t link_mode_masks_nwords; 83 uint32_t reserved[8]; 84 uint32_t link_mode_masks[]; 85 }; 86 87 #define ETHTOOL_GLINKSETTINGS 0x0000004c 88 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5 89 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6 90 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17 91 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18 92 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19 93 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20 94 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21 95 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22 96 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23 97 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24 98 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25 99 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26 100 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27 101 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28 102 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29 103 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30 104 #endif 105 #ifndef HAVE_ETHTOOL_LINK_MODE_25G 106 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31 107 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32 108 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33 109 #endif 110 #ifndef HAVE_ETHTOOL_LINK_MODE_50G 111 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34 112 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35 113 #endif 114 #ifndef HAVE_ETHTOOL_LINK_MODE_100G 115 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36 116 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37 117 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38 118 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39 119 #endif 120 121 /** 122 * Get interface name from private structure. 123 * 124 * @param[in] priv 125 * Pointer to private structure. 126 * @param[out] ifname 127 * Interface name output buffer. 128 * 129 * @return 130 * 0 on success, -1 on failure and errno is set. 131 */ 132 int 133 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]) 134 { 135 DIR *dir; 136 struct dirent *dent; 137 unsigned int dev_type = 0; 138 unsigned int dev_port_prev = ~0u; 139 char match[IF_NAMESIZE] = ""; 140 141 { 142 MKSTR(path, "%s/device/net", priv->ibdev_path); 143 144 dir = opendir(path); 145 if (dir == NULL) 146 return -1; 147 } 148 while ((dent = readdir(dir)) != NULL) { 149 char *name = dent->d_name; 150 FILE *file; 151 unsigned int dev_port; 152 int r; 153 154 if ((name[0] == '.') && 155 ((name[1] == '\0') || 156 ((name[1] == '.') && (name[2] == '\0')))) 157 continue; 158 159 MKSTR(path, "%s/device/net/%s/%s", 160 priv->ibdev_path, name, 161 (dev_type ? "dev_id" : "dev_port")); 162 163 file = fopen(path, "rb"); 164 if (file == NULL) { 165 if (errno != ENOENT) 166 continue; 167 /* 168 * Switch to dev_id when dev_port does not exist as 169 * is the case with Linux kernel versions < 3.15. 170 */ 171 try_dev_id: 172 match[0] = '\0'; 173 if (dev_type) 174 break; 175 dev_type = 1; 176 dev_port_prev = ~0u; 177 rewinddir(dir); 178 continue; 179 } 180 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port); 181 fclose(file); 182 if (r != 1) 183 continue; 184 /* 185 * Switch to dev_id when dev_port returns the same value for 186 * all ports. May happen when using a MOFED release older than 187 * 3.0 with a Linux kernel >= 3.15. 188 */ 189 if (dev_port == dev_port_prev) 190 goto try_dev_id; 191 dev_port_prev = dev_port; 192 if (dev_port == (priv->port - 1u)) 193 snprintf(match, sizeof(match), "%s", name); 194 } 195 closedir(dir); 196 if (match[0] == '\0') 197 return -1; 198 strncpy(*ifname, match, sizeof(*ifname)); 199 return 0; 200 } 201 202 /** 203 * Check if the counter is located on ib counters file. 204 * 205 * @param[in] cntr 206 * Counter name. 207 * 208 * @return 209 * 1 if counter is located on ib counters file , 0 otherwise. 210 */ 211 int 212 priv_is_ib_cntr(const char *cntr) 213 { 214 if (!strcmp(cntr, "out_of_buffer")) 215 return 1; 216 return 0; 217 } 218 219 /** 220 * Read from sysfs entry. 221 * 222 * @param[in] priv 223 * Pointer to private structure. 224 * @param[in] entry 225 * Entry name relative to sysfs path. 226 * @param[out] buf 227 * Data output buffer. 228 * @param size 229 * Buffer size. 230 * 231 * @return 232 * 0 on success, -1 on failure and errno is set. 233 */ 234 static int 235 priv_sysfs_read(const struct priv *priv, const char *entry, 236 char *buf, size_t size) 237 { 238 char ifname[IF_NAMESIZE]; 239 FILE *file; 240 int ret; 241 int err; 242 243 if (priv_get_ifname(priv, &ifname)) 244 return -1; 245 246 if (priv_is_ib_cntr(entry)) { 247 MKSTR(path, "%s/ports/1/hw_counters/%s", 248 priv->ibdev_path, entry); 249 file = fopen(path, "rb"); 250 } else { 251 MKSTR(path, "%s/device/net/%s/%s", 252 priv->ibdev_path, ifname, entry); 253 file = fopen(path, "rb"); 254 } 255 if (file == NULL) 256 return -1; 257 ret = fread(buf, 1, size, file); 258 err = errno; 259 if (((size_t)ret < size) && (ferror(file))) 260 ret = -1; 261 else 262 ret = size; 263 fclose(file); 264 errno = err; 265 return ret; 266 } 267 268 /** 269 * Write to sysfs entry. 270 * 271 * @param[in] priv 272 * Pointer to private structure. 273 * @param[in] entry 274 * Entry name relative to sysfs path. 275 * @param[in] buf 276 * Data buffer. 277 * @param size 278 * Buffer size. 279 * 280 * @return 281 * 0 on success, -1 on failure and errno is set. 282 */ 283 static int 284 priv_sysfs_write(const struct priv *priv, const char *entry, 285 char *buf, size_t size) 286 { 287 char ifname[IF_NAMESIZE]; 288 FILE *file; 289 int ret; 290 int err; 291 292 if (priv_get_ifname(priv, &ifname)) 293 return -1; 294 295 MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry); 296 297 file = fopen(path, "wb"); 298 if (file == NULL) 299 return -1; 300 ret = fwrite(buf, 1, size, file); 301 err = errno; 302 if (((size_t)ret < size) || (ferror(file))) 303 ret = -1; 304 else 305 ret = size; 306 fclose(file); 307 errno = err; 308 return ret; 309 } 310 311 /** 312 * Get unsigned long sysfs property. 313 * 314 * @param priv 315 * Pointer to private structure. 316 * @param[in] name 317 * Entry name relative to sysfs path. 318 * @param[out] value 319 * Value output buffer. 320 * 321 * @return 322 * 0 on success, -1 on failure and errno is set. 323 */ 324 static int 325 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value) 326 { 327 int ret; 328 unsigned long value_ret; 329 char value_str[32]; 330 331 ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1)); 332 if (ret == -1) { 333 DEBUG("cannot read %s value from sysfs: %s", 334 name, strerror(errno)); 335 return -1; 336 } 337 value_str[ret] = '\0'; 338 errno = 0; 339 value_ret = strtoul(value_str, NULL, 0); 340 if (errno) { 341 DEBUG("invalid %s value `%s': %s", name, value_str, 342 strerror(errno)); 343 return -1; 344 } 345 *value = value_ret; 346 return 0; 347 } 348 349 /** 350 * Set unsigned long sysfs property. 351 * 352 * @param priv 353 * Pointer to private structure. 354 * @param[in] name 355 * Entry name relative to sysfs path. 356 * @param value 357 * Value to set. 358 * 359 * @return 360 * 0 on success, -1 on failure and errno is set. 361 */ 362 static int 363 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value) 364 { 365 int ret; 366 MKSTR(value_str, "%lu", value); 367 368 ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1)); 369 if (ret == -1) { 370 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s", 371 name, value_str, value, strerror(errno)); 372 return -1; 373 } 374 return 0; 375 } 376 377 /** 378 * Perform ifreq ioctl() on associated Ethernet device. 379 * 380 * @param[in] priv 381 * Pointer to private structure. 382 * @param req 383 * Request number to pass to ioctl(). 384 * @param[out] ifr 385 * Interface request structure output buffer. 386 * 387 * @return 388 * 0 on success, -1 on failure and errno is set. 389 */ 390 int 391 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr) 392 { 393 int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); 394 int ret = -1; 395 396 if (sock == -1) 397 return ret; 398 if (priv_get_ifname(priv, &ifr->ifr_name) == 0) 399 ret = ioctl(sock, req, ifr); 400 close(sock); 401 return ret; 402 } 403 404 /** 405 * Return the number of active VFs for the current device. 406 * 407 * @param[in] priv 408 * Pointer to private structure. 409 * @param[out] num_vfs 410 * Number of active VFs. 411 * 412 * @return 413 * 0 on success, -1 on failure and errno is set. 414 */ 415 int 416 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs) 417 { 418 /* The sysfs entry name depends on the operating system. */ 419 const char **name = (const char *[]){ 420 "device/sriov_numvfs", 421 "device/mlx5_num_vfs", 422 NULL, 423 }; 424 int ret; 425 426 do { 427 unsigned long ulong_num_vfs; 428 429 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs); 430 if (!ret) 431 *num_vfs = ulong_num_vfs; 432 } while (*(++name) && ret); 433 return ret; 434 } 435 436 /** 437 * Get device MTU. 438 * 439 * @param priv 440 * Pointer to private structure. 441 * @param[out] mtu 442 * MTU value output buffer. 443 * 444 * @return 445 * 0 on success, -1 on failure and errno is set. 446 */ 447 int 448 priv_get_mtu(struct priv *priv, uint16_t *mtu) 449 { 450 unsigned long ulong_mtu; 451 452 if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1) 453 return -1; 454 *mtu = ulong_mtu; 455 return 0; 456 } 457 458 /** 459 * Read device counter from sysfs. 460 * 461 * @param priv 462 * Pointer to private structure. 463 * @param name 464 * Counter name. 465 * @param[out] cntr 466 * Counter output buffer. 467 * 468 * @return 469 * 0 on success, -1 on failure and errno is set. 470 */ 471 int 472 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr) 473 { 474 unsigned long ulong_ctr; 475 476 if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1) 477 return -1; 478 *cntr = ulong_ctr; 479 return 0; 480 } 481 482 /** 483 * Set device MTU. 484 * 485 * @param priv 486 * Pointer to private structure. 487 * @param mtu 488 * MTU value to set. 489 * 490 * @return 491 * 0 on success, -1 on failure and errno is set. 492 */ 493 static int 494 priv_set_mtu(struct priv *priv, uint16_t mtu) 495 { 496 uint16_t new_mtu; 497 498 if (priv_set_sysfs_ulong(priv, "mtu", mtu) || 499 priv_get_mtu(priv, &new_mtu)) 500 return -1; 501 if (new_mtu == mtu) 502 return 0; 503 errno = EINVAL; 504 return -1; 505 } 506 507 /** 508 * Set device flags. 509 * 510 * @param priv 511 * Pointer to private structure. 512 * @param keep 513 * Bitmask for flags that must remain untouched. 514 * @param flags 515 * Bitmask for flags to modify. 516 * 517 * @return 518 * 0 on success, -1 on failure and errno is set. 519 */ 520 int 521 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags) 522 { 523 unsigned long tmp; 524 525 if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1) 526 return -1; 527 tmp &= keep; 528 tmp |= (flags & (~keep)); 529 return priv_set_sysfs_ulong(priv, "flags", tmp); 530 } 531 532 /** 533 * Ethernet device configuration. 534 * 535 * Prepare the driver for a given number of TX and RX queues. 536 * 537 * @param dev 538 * Pointer to Ethernet device structure. 539 * 540 * @return 541 * 0 on success, errno value on failure. 542 */ 543 static int 544 dev_configure(struct rte_eth_dev *dev) 545 { 546 struct priv *priv = dev->data->dev_private; 547 unsigned int rxqs_n = dev->data->nb_rx_queues; 548 unsigned int txqs_n = dev->data->nb_tx_queues; 549 unsigned int i; 550 unsigned int j; 551 unsigned int reta_idx_n; 552 const uint8_t use_app_rss_key = 553 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key; 554 uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv); 555 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 556 uint64_t supp_rx_offloads = 557 (mlx5_priv_get_rx_port_offloads(priv) | 558 mlx5_priv_get_rx_queue_offloads(priv)); 559 uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads; 560 561 if ((tx_offloads & supp_tx_offloads) != tx_offloads) { 562 ERROR("Some Tx offloads are not supported " 563 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 564 tx_offloads, supp_tx_offloads); 565 return ENOTSUP; 566 } 567 if ((rx_offloads & supp_rx_offloads) != rx_offloads) { 568 ERROR("Some Rx offloads are not supported " 569 "requested 0x%" PRIx64 " supported 0x%" PRIx64, 570 rx_offloads, supp_rx_offloads); 571 return ENOTSUP; 572 } 573 if (use_app_rss_key && 574 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 575 rss_hash_default_key_len)) { 576 /* MLX5 RSS only support 40bytes key. */ 577 return EINVAL; 578 } 579 priv->rss_conf.rss_key = 580 rte_realloc(priv->rss_conf.rss_key, 581 rss_hash_default_key_len, 0); 582 if (!priv->rss_conf.rss_key) { 583 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 584 return ENOMEM; 585 } 586 memcpy(priv->rss_conf.rss_key, 587 use_app_rss_key ? 588 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 589 rss_hash_default_key, 590 rss_hash_default_key_len); 591 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 592 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 593 priv->rxqs = (void *)dev->data->rx_queues; 594 priv->txqs = (void *)dev->data->tx_queues; 595 if (txqs_n != priv->txqs_n) { 596 INFO("%p: TX queues number update: %u -> %u", 597 (void *)dev, priv->txqs_n, txqs_n); 598 priv->txqs_n = txqs_n; 599 } 600 if (rxqs_n > priv->config.ind_table_max_size) { 601 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 602 return EINVAL; 603 } 604 if (rxqs_n == priv->rxqs_n) 605 return 0; 606 INFO("%p: RX queues number update: %u -> %u", 607 (void *)dev, priv->rxqs_n, rxqs_n); 608 priv->rxqs_n = rxqs_n; 609 /* If the requested number of RX queues is not a power of two, use the 610 * maximum indirection table size for better balancing. 611 * The result is always rounded to the next power of two. */ 612 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 613 priv->config.ind_table_max_size : 614 rxqs_n)); 615 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 616 return ENOMEM; 617 /* When the number of RX queues is not a power of two, the remaining 618 * table entries are padded with reused WQs and hashes are not spread 619 * uniformly. */ 620 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 621 (*priv->reta_idx)[i] = j; 622 if (++j == rxqs_n) 623 j = 0; 624 } 625 return 0; 626 } 627 628 /** 629 * DPDK callback for Ethernet device configuration. 630 * 631 * @param dev 632 * Pointer to Ethernet device structure. 633 * 634 * @return 635 * 0 on success, negative errno value on failure. 636 */ 637 int 638 mlx5_dev_configure(struct rte_eth_dev *dev) 639 { 640 struct priv *priv = dev->data->dev_private; 641 int ret; 642 643 priv_lock(priv); 644 ret = dev_configure(dev); 645 assert(ret >= 0); 646 priv_unlock(priv); 647 return -ret; 648 } 649 650 /** 651 * DPDK callback to get information about the device. 652 * 653 * @param dev 654 * Pointer to Ethernet device structure. 655 * @param[out] info 656 * Info structure output buffer. 657 */ 658 void 659 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 660 { 661 struct priv *priv = dev->data->dev_private; 662 struct mlx5_dev_config *config = &priv->config; 663 unsigned int max; 664 char ifname[IF_NAMESIZE]; 665 666 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 667 668 priv_lock(priv); 669 /* FIXME: we should ask the device for these values. */ 670 info->min_rx_bufsize = 32; 671 info->max_rx_pktlen = 65536; 672 /* 673 * Since we need one CQ per QP, the limit is the minimum number 674 * between the two values. 675 */ 676 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 677 priv->device_attr.orig_attr.max_qp); 678 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 679 if (max >= 65535) 680 max = 65535; 681 info->max_rx_queues = max; 682 info->max_tx_queues = max; 683 info->max_mac_addrs = RTE_DIM(priv->mac); 684 info->rx_queue_offload_capa = 685 mlx5_priv_get_rx_queue_offloads(priv); 686 info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) | 687 info->rx_queue_offload_capa); 688 info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv); 689 if (priv_get_ifname(priv, &ifname) == 0) 690 info->if_index = if_nametoindex(ifname); 691 info->reta_size = priv->reta_idx_n ? 692 priv->reta_idx_n : config->ind_table_max_size; 693 info->hash_key_size = priv->rss_conf.rss_key_len; 694 info->speed_capa = priv->link_speed_capa; 695 priv_unlock(priv); 696 } 697 698 const uint32_t * 699 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 700 { 701 static const uint32_t ptypes[] = { 702 /* refers to rxq_cq_to_pkt_type() */ 703 RTE_PTYPE_L2_ETHER, 704 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 705 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 706 RTE_PTYPE_L4_NONFRAG, 707 RTE_PTYPE_L4_FRAG, 708 RTE_PTYPE_L4_TCP, 709 RTE_PTYPE_L4_UDP, 710 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 711 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 712 RTE_PTYPE_INNER_L4_NONFRAG, 713 RTE_PTYPE_INNER_L4_FRAG, 714 RTE_PTYPE_INNER_L4_TCP, 715 RTE_PTYPE_INNER_L4_UDP, 716 RTE_PTYPE_UNKNOWN 717 }; 718 719 if (dev->rx_pkt_burst == mlx5_rx_burst || 720 dev->rx_pkt_burst == mlx5_rx_burst_vec) 721 return ptypes; 722 return NULL; 723 } 724 725 /** 726 * DPDK callback to retrieve physical link information. 727 * 728 * @param dev 729 * Pointer to Ethernet device structure. 730 * @param wait_to_complete 731 * Wait for request completion (ignored). 732 */ 733 static int 734 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 735 { 736 struct priv *priv = dev->data->dev_private; 737 struct ethtool_cmd edata = { 738 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 739 }; 740 struct ifreq ifr; 741 struct rte_eth_link dev_link; 742 int link_speed = 0; 743 744 /* priv_lock() is not taken to allow concurrent calls. */ 745 746 (void)wait_to_complete; 747 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 748 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 749 return -1; 750 } 751 memset(&dev_link, 0, sizeof(dev_link)); 752 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 753 (ifr.ifr_flags & IFF_RUNNING)); 754 ifr.ifr_data = (void *)&edata; 755 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 756 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 757 strerror(errno)); 758 return -1; 759 } 760 link_speed = ethtool_cmd_speed(&edata); 761 if (link_speed == -1) 762 dev_link.link_speed = 0; 763 else 764 dev_link.link_speed = link_speed; 765 priv->link_speed_capa = 0; 766 if (edata.supported & SUPPORTED_Autoneg) 767 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 768 if (edata.supported & (SUPPORTED_1000baseT_Full | 769 SUPPORTED_1000baseKX_Full)) 770 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 771 if (edata.supported & SUPPORTED_10000baseKR_Full) 772 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 773 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 774 SUPPORTED_40000baseCR4_Full | 775 SUPPORTED_40000baseSR4_Full | 776 SUPPORTED_40000baseLR4_Full)) 777 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 778 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 779 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 780 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 781 ETH_LINK_SPEED_FIXED); 782 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 783 /* Link status changed. */ 784 dev->data->dev_link = dev_link; 785 return 0; 786 } 787 /* Link status is still the same. */ 788 return -1; 789 } 790 791 /** 792 * Retrieve physical link information (unlocked version using new ioctl). 793 * 794 * @param dev 795 * Pointer to Ethernet device structure. 796 * @param wait_to_complete 797 * Wait for request completion (ignored). 798 */ 799 static int 800 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 801 { 802 struct priv *priv = dev->data->dev_private; 803 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 804 struct ifreq ifr; 805 struct rte_eth_link dev_link; 806 uint64_t sc; 807 808 (void)wait_to_complete; 809 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 810 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 811 return -1; 812 } 813 memset(&dev_link, 0, sizeof(dev_link)); 814 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 815 (ifr.ifr_flags & IFF_RUNNING)); 816 ifr.ifr_data = (void *)&gcmd; 817 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 818 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 819 strerror(errno)); 820 return -1; 821 } 822 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 823 824 alignas(struct ethtool_link_settings) 825 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 826 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 827 struct ethtool_link_settings *ecmd = (void *)data; 828 829 *ecmd = gcmd; 830 ifr.ifr_data = (void *)ecmd; 831 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 832 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 833 strerror(errno)); 834 return -1; 835 } 836 dev_link.link_speed = ecmd->speed; 837 sc = ecmd->link_mode_masks[0] | 838 ((uint64_t)ecmd->link_mode_masks[1] << 32); 839 priv->link_speed_capa = 0; 840 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 841 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 842 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 843 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 844 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 845 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 846 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 847 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 848 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 849 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 850 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 851 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 852 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 853 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 854 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 855 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 856 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 857 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 858 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 859 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 860 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 861 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 862 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 863 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 864 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 865 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 866 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 867 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 868 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 869 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 870 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 871 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 872 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 873 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 874 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 875 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 876 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 877 ETH_LINK_SPEED_FIXED); 878 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 879 /* Link status changed. */ 880 dev->data->dev_link = dev_link; 881 return 0; 882 } 883 /* Link status is still the same. */ 884 return -1; 885 } 886 887 /** 888 * DPDK callback to retrieve physical link information. 889 * 890 * @param dev 891 * Pointer to Ethernet device structure. 892 * @param wait_to_complete 893 * Wait for request completion (ignored). 894 */ 895 int 896 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 897 { 898 struct utsname utsname; 899 int ver[3]; 900 901 if (uname(&utsname) == -1 || 902 sscanf(utsname.release, "%d.%d.%d", 903 &ver[0], &ver[1], &ver[2]) != 3 || 904 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 905 return mlx5_link_update_unlocked_gset(dev, wait_to_complete); 906 return mlx5_link_update_unlocked_gs(dev, wait_to_complete); 907 } 908 909 /** 910 * DPDK callback to change the MTU. 911 * 912 * @param dev 913 * Pointer to Ethernet device structure. 914 * @param in_mtu 915 * New MTU. 916 * 917 * @return 918 * 0 on success, negative errno value on failure. 919 */ 920 int 921 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 922 { 923 struct priv *priv = dev->data->dev_private; 924 uint16_t kern_mtu; 925 int ret = 0; 926 927 priv_lock(priv); 928 ret = priv_get_mtu(priv, &kern_mtu); 929 if (ret) 930 goto out; 931 /* Set kernel interface MTU first. */ 932 ret = priv_set_mtu(priv, mtu); 933 if (ret) 934 goto out; 935 ret = priv_get_mtu(priv, &kern_mtu); 936 if (ret) 937 goto out; 938 if (kern_mtu == mtu) { 939 priv->mtu = mtu; 940 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 941 } 942 priv_unlock(priv); 943 return 0; 944 out: 945 ret = errno; 946 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 947 strerror(ret)); 948 priv_unlock(priv); 949 assert(ret >= 0); 950 return -ret; 951 } 952 953 /** 954 * DPDK callback to get flow control status. 955 * 956 * @param dev 957 * Pointer to Ethernet device structure. 958 * @param[out] fc_conf 959 * Flow control output buffer. 960 * 961 * @return 962 * 0 on success, negative errno value on failure. 963 */ 964 int 965 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 966 { 967 struct priv *priv = dev->data->dev_private; 968 struct ifreq ifr; 969 struct ethtool_pauseparam ethpause = { 970 .cmd = ETHTOOL_GPAUSEPARAM 971 }; 972 int ret; 973 974 ifr.ifr_data = (void *)ðpause; 975 priv_lock(priv); 976 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 977 ret = errno; 978 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 979 " failed: %s", 980 strerror(ret)); 981 goto out; 982 } 983 984 fc_conf->autoneg = ethpause.autoneg; 985 if (ethpause.rx_pause && ethpause.tx_pause) 986 fc_conf->mode = RTE_FC_FULL; 987 else if (ethpause.rx_pause) 988 fc_conf->mode = RTE_FC_RX_PAUSE; 989 else if (ethpause.tx_pause) 990 fc_conf->mode = RTE_FC_TX_PAUSE; 991 else 992 fc_conf->mode = RTE_FC_NONE; 993 ret = 0; 994 995 out: 996 priv_unlock(priv); 997 assert(ret >= 0); 998 return -ret; 999 } 1000 1001 /** 1002 * DPDK callback to modify flow control parameters. 1003 * 1004 * @param dev 1005 * Pointer to Ethernet device structure. 1006 * @param[in] fc_conf 1007 * Flow control parameters. 1008 * 1009 * @return 1010 * 0 on success, negative errno value on failure. 1011 */ 1012 int 1013 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1014 { 1015 struct priv *priv = dev->data->dev_private; 1016 struct ifreq ifr; 1017 struct ethtool_pauseparam ethpause = { 1018 .cmd = ETHTOOL_SPAUSEPARAM 1019 }; 1020 int ret; 1021 1022 ifr.ifr_data = (void *)ðpause; 1023 ethpause.autoneg = fc_conf->autoneg; 1024 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1025 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1026 ethpause.rx_pause = 1; 1027 else 1028 ethpause.rx_pause = 0; 1029 1030 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1031 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1032 ethpause.tx_pause = 1; 1033 else 1034 ethpause.tx_pause = 0; 1035 1036 priv_lock(priv); 1037 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 1038 ret = errno; 1039 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1040 " failed: %s", 1041 strerror(ret)); 1042 goto out; 1043 } 1044 ret = 0; 1045 1046 out: 1047 priv_unlock(priv); 1048 assert(ret >= 0); 1049 return -ret; 1050 } 1051 1052 /** 1053 * Get PCI information from struct ibv_device. 1054 * 1055 * @param device 1056 * Pointer to Ethernet device structure. 1057 * @param[out] pci_addr 1058 * PCI bus address output buffer. 1059 * 1060 * @return 1061 * 0 on success, -1 on failure and errno is set. 1062 */ 1063 int 1064 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1065 struct rte_pci_addr *pci_addr) 1066 { 1067 FILE *file; 1068 char line[32]; 1069 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1070 1071 file = fopen(path, "rb"); 1072 if (file == NULL) 1073 return -1; 1074 while (fgets(line, sizeof(line), file) == line) { 1075 size_t len = strlen(line); 1076 int ret; 1077 1078 /* Truncate long lines. */ 1079 if (len == (sizeof(line) - 1)) 1080 while (line[(len - 1)] != '\n') { 1081 ret = fgetc(file); 1082 if (ret == EOF) 1083 break; 1084 line[(len - 1)] = ret; 1085 } 1086 /* Extract information. */ 1087 if (sscanf(line, 1088 "PCI_SLOT_NAME=" 1089 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1090 &pci_addr->domain, 1091 &pci_addr->bus, 1092 &pci_addr->devid, 1093 &pci_addr->function) == 4) { 1094 ret = 0; 1095 break; 1096 } 1097 } 1098 fclose(file); 1099 return 0; 1100 } 1101 1102 /** 1103 * Update the link status. 1104 * 1105 * @param priv 1106 * Pointer to private structure. 1107 * 1108 * @return 1109 * Zero if the callback process can be called immediately. 1110 */ 1111 static int 1112 priv_link_status_update(struct priv *priv) 1113 { 1114 struct rte_eth_link *link = &priv->dev->data->dev_link; 1115 1116 mlx5_link_update(priv->dev, 0); 1117 if (((link->link_speed == 0) && link->link_status) || 1118 ((link->link_speed != 0) && !link->link_status)) { 1119 /* 1120 * Inconsistent status. Event likely occurred before the 1121 * kernel netdevice exposes the new status. 1122 */ 1123 if (!priv->pending_alarm) { 1124 priv->pending_alarm = 1; 1125 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 1126 mlx5_dev_link_status_handler, 1127 priv->dev); 1128 } 1129 return 1; 1130 } else if (unlikely(priv->pending_alarm)) { 1131 /* Link interrupt occurred while alarm is already scheduled. */ 1132 priv->pending_alarm = 0; 1133 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 1134 } 1135 return 0; 1136 } 1137 1138 /** 1139 * Device status handler. 1140 * 1141 * @param priv 1142 * Pointer to private structure. 1143 * @param events 1144 * Pointer to event flags holder. 1145 * 1146 * @return 1147 * Events bitmap of callback process which can be called immediately. 1148 */ 1149 static uint32_t 1150 priv_dev_status_handler(struct priv *priv) 1151 { 1152 struct ibv_async_event event; 1153 uint32_t ret = 0; 1154 1155 /* Read all message and acknowledge them. */ 1156 for (;;) { 1157 if (ibv_get_async_event(priv->ctx, &event)) 1158 break; 1159 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1160 event.event_type == IBV_EVENT_PORT_ERR) && 1161 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1162 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1163 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1164 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1165 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1166 else 1167 DEBUG("event type %d on port %d not handled", 1168 event.event_type, event.element.port_num); 1169 ibv_ack_async_event(&event); 1170 } 1171 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1172 if (priv_link_status_update(priv)) 1173 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1174 return ret; 1175 } 1176 1177 /** 1178 * Handle delayed link status event. 1179 * 1180 * @param arg 1181 * Registered argument. 1182 */ 1183 void 1184 mlx5_dev_link_status_handler(void *arg) 1185 { 1186 struct rte_eth_dev *dev = arg; 1187 struct priv *priv = dev->data->dev_private; 1188 int ret; 1189 1190 priv_lock(priv); 1191 assert(priv->pending_alarm == 1); 1192 priv->pending_alarm = 0; 1193 ret = priv_link_status_update(priv); 1194 priv_unlock(priv); 1195 if (!ret) 1196 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1197 } 1198 1199 /** 1200 * Handle interrupts from the NIC. 1201 * 1202 * @param[in] intr_handle 1203 * Interrupt handler. 1204 * @param cb_arg 1205 * Callback argument. 1206 */ 1207 void 1208 mlx5_dev_interrupt_handler(void *cb_arg) 1209 { 1210 struct rte_eth_dev *dev = cb_arg; 1211 struct priv *priv = dev->data->dev_private; 1212 uint32_t events; 1213 1214 priv_lock(priv); 1215 events = priv_dev_status_handler(priv); 1216 priv_unlock(priv); 1217 if (events & (1 << RTE_ETH_EVENT_INTR_LSC)) 1218 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL); 1219 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1220 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL); 1221 } 1222 1223 /** 1224 * Handle interrupts from the socket. 1225 * 1226 * @param cb_arg 1227 * Callback argument. 1228 */ 1229 static void 1230 mlx5_dev_handler_socket(void *cb_arg) 1231 { 1232 struct rte_eth_dev *dev = cb_arg; 1233 struct priv *priv = dev->data->dev_private; 1234 1235 priv_lock(priv); 1236 priv_socket_handle(priv); 1237 priv_unlock(priv); 1238 } 1239 1240 /** 1241 * Uninstall interrupt handler. 1242 * 1243 * @param priv 1244 * Pointer to private structure. 1245 * @param dev 1246 * Pointer to the rte_eth_dev structure. 1247 */ 1248 void 1249 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1250 { 1251 if (dev->data->dev_conf.intr_conf.lsc || 1252 dev->data->dev_conf.intr_conf.rmv) 1253 rte_intr_callback_unregister(&priv->intr_handle, 1254 mlx5_dev_interrupt_handler, dev); 1255 if (priv->primary_socket) 1256 rte_intr_callback_unregister(&priv->intr_handle_socket, 1257 mlx5_dev_handler_socket, dev); 1258 if (priv->pending_alarm) 1259 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1260 priv->pending_alarm = 0; 1261 priv->intr_handle.fd = 0; 1262 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1263 priv->intr_handle_socket.fd = 0; 1264 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1265 } 1266 1267 /** 1268 * Install interrupt handler. 1269 * 1270 * @param priv 1271 * Pointer to private structure. 1272 * @param dev 1273 * Pointer to the rte_eth_dev structure. 1274 */ 1275 void 1276 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1277 { 1278 int rc, flags; 1279 1280 assert(priv->ctx->async_fd > 0); 1281 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1282 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1283 if (rc < 0) { 1284 INFO("failed to change file descriptor async event queue"); 1285 dev->data->dev_conf.intr_conf.lsc = 0; 1286 dev->data->dev_conf.intr_conf.rmv = 0; 1287 } 1288 if (dev->data->dev_conf.intr_conf.lsc || 1289 dev->data->dev_conf.intr_conf.rmv) { 1290 priv->intr_handle.fd = priv->ctx->async_fd; 1291 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1292 rte_intr_callback_register(&priv->intr_handle, 1293 mlx5_dev_interrupt_handler, dev); 1294 } 1295 1296 rc = priv_socket_init(priv); 1297 if (!rc && priv->primary_socket) { 1298 priv->intr_handle_socket.fd = priv->primary_socket; 1299 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1300 rte_intr_callback_register(&priv->intr_handle_socket, 1301 mlx5_dev_handler_socket, dev); 1302 } 1303 } 1304 1305 /** 1306 * Change the link state (UP / DOWN). 1307 * 1308 * @param priv 1309 * Pointer to private data structure. 1310 * @param dev 1311 * Pointer to rte_eth_dev structure. 1312 * @param up 1313 * Nonzero for link up, otherwise link down. 1314 * 1315 * @return 1316 * 0 on success, errno value on failure. 1317 */ 1318 static int 1319 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up) 1320 { 1321 int err; 1322 1323 if (up) { 1324 err = priv_set_flags(priv, ~IFF_UP, IFF_UP); 1325 if (err) 1326 return err; 1327 dev->tx_pkt_burst = priv_select_tx_function(priv, dev); 1328 dev->rx_pkt_burst = priv_select_rx_function(priv, dev); 1329 } else { 1330 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP); 1331 if (err) 1332 return err; 1333 dev->rx_pkt_burst = removed_rx_burst; 1334 dev->tx_pkt_burst = removed_tx_burst; 1335 } 1336 return 0; 1337 } 1338 1339 /** 1340 * DPDK callback to bring the link DOWN. 1341 * 1342 * @param dev 1343 * Pointer to Ethernet device structure. 1344 * 1345 * @return 1346 * 0 on success, errno value on failure. 1347 */ 1348 int 1349 mlx5_set_link_down(struct rte_eth_dev *dev) 1350 { 1351 struct priv *priv = dev->data->dev_private; 1352 int err; 1353 1354 priv_lock(priv); 1355 err = priv_dev_set_link(priv, dev, 0); 1356 priv_unlock(priv); 1357 return err; 1358 } 1359 1360 /** 1361 * DPDK callback to bring the link UP. 1362 * 1363 * @param dev 1364 * Pointer to Ethernet device structure. 1365 * 1366 * @return 1367 * 0 on success, errno value on failure. 1368 */ 1369 int 1370 mlx5_set_link_up(struct rte_eth_dev *dev) 1371 { 1372 struct priv *priv = dev->data->dev_private; 1373 int err; 1374 1375 priv_lock(priv); 1376 err = priv_dev_set_link(priv, dev, 1); 1377 priv_unlock(priv); 1378 return err; 1379 } 1380 1381 /** 1382 * Configure the TX function to use. 1383 * 1384 * @param priv 1385 * Pointer to private data structure. 1386 * @param dev 1387 * Pointer to rte_eth_dev structure. 1388 * 1389 * @return 1390 * Pointer to selected Tx burst function. 1391 */ 1392 eth_tx_burst_t 1393 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev) 1394 { 1395 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; 1396 struct mlx5_dev_config *config = &priv->config; 1397 uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads; 1398 int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO | 1399 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 1400 DEV_TX_OFFLOAD_GRE_TNL_TSO)); 1401 int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT); 1402 1403 assert(priv != NULL); 1404 /* Select appropriate TX function. */ 1405 if (vlan_insert || tso) 1406 return tx_pkt_burst; 1407 if (config->mps == MLX5_MPW_ENHANCED) { 1408 if (priv_check_vec_tx_support(priv, dev) > 0) { 1409 if (priv_check_raw_vec_tx_support(priv, dev) > 0) 1410 tx_pkt_burst = mlx5_tx_burst_raw_vec; 1411 else 1412 tx_pkt_burst = mlx5_tx_burst_vec; 1413 DEBUG("selected Enhanced MPW TX vectorized function"); 1414 } else { 1415 tx_pkt_burst = mlx5_tx_burst_empw; 1416 DEBUG("selected Enhanced MPW TX function"); 1417 } 1418 } else if (config->mps && (config->txq_inline > 0)) { 1419 tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1420 DEBUG("selected MPW inline TX function"); 1421 } else if (config->mps) { 1422 tx_pkt_burst = mlx5_tx_burst_mpw; 1423 DEBUG("selected MPW TX function"); 1424 } 1425 return tx_pkt_burst; 1426 } 1427 1428 /** 1429 * Configure the RX function to use. 1430 * 1431 * @param priv 1432 * Pointer to private data structure. 1433 * @param dev 1434 * Pointer to rte_eth_dev structure. 1435 * 1436 * @return 1437 * Pointer to selected Rx burst function. 1438 */ 1439 eth_rx_burst_t 1440 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) 1441 { 1442 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1443 1444 assert(priv != NULL); 1445 if (priv_check_vec_rx_support(priv) > 0) { 1446 rx_pkt_burst = mlx5_rx_burst_vec; 1447 DEBUG("selected RX vectorized function"); 1448 } 1449 return rx_pkt_burst; 1450 } 1451