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; 554 555 if (use_app_rss_key && 556 (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != 557 rss_hash_default_key_len)) { 558 /* MLX5 RSS only support 40bytes key. */ 559 return EINVAL; 560 } 561 priv->rss_conf.rss_key = 562 rte_realloc(priv->rss_conf.rss_key, 563 rss_hash_default_key_len, 0); 564 if (!priv->rss_conf.rss_key) { 565 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); 566 return ENOMEM; 567 } 568 memcpy(priv->rss_conf.rss_key, 569 use_app_rss_key ? 570 dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : 571 rss_hash_default_key, 572 rss_hash_default_key_len); 573 priv->rss_conf.rss_key_len = rss_hash_default_key_len; 574 priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; 575 priv->rxqs = (void *)dev->data->rx_queues; 576 priv->txqs = (void *)dev->data->tx_queues; 577 if (txqs_n != priv->txqs_n) { 578 INFO("%p: TX queues number update: %u -> %u", 579 (void *)dev, priv->txqs_n, txqs_n); 580 priv->txqs_n = txqs_n; 581 } 582 if (rxqs_n > priv->config.ind_table_max_size) { 583 ERROR("cannot handle this many RX queues (%u)", rxqs_n); 584 return EINVAL; 585 } 586 if (rxqs_n == priv->rxqs_n) 587 return 0; 588 INFO("%p: RX queues number update: %u -> %u", 589 (void *)dev, priv->rxqs_n, rxqs_n); 590 priv->rxqs_n = rxqs_n; 591 /* If the requested number of RX queues is not a power of two, use the 592 * maximum indirection table size for better balancing. 593 * The result is always rounded to the next power of two. */ 594 reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ? 595 priv->config.ind_table_max_size : 596 rxqs_n)); 597 if (priv_rss_reta_index_resize(priv, reta_idx_n)) 598 return ENOMEM; 599 /* When the number of RX queues is not a power of two, the remaining 600 * table entries are padded with reused WQs and hashes are not spread 601 * uniformly. */ 602 for (i = 0, j = 0; (i != reta_idx_n); ++i) { 603 (*priv->reta_idx)[i] = j; 604 if (++j == rxqs_n) 605 j = 0; 606 } 607 return 0; 608 } 609 610 /** 611 * DPDK callback for Ethernet device configuration. 612 * 613 * @param dev 614 * Pointer to Ethernet device structure. 615 * 616 * @return 617 * 0 on success, negative errno value on failure. 618 */ 619 int 620 mlx5_dev_configure(struct rte_eth_dev *dev) 621 { 622 struct priv *priv = dev->data->dev_private; 623 int ret; 624 625 priv_lock(priv); 626 ret = dev_configure(dev); 627 assert(ret >= 0); 628 priv_unlock(priv); 629 return -ret; 630 } 631 632 /** 633 * DPDK callback to get information about the device. 634 * 635 * @param dev 636 * Pointer to Ethernet device structure. 637 * @param[out] info 638 * Info structure output buffer. 639 */ 640 void 641 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) 642 { 643 struct priv *priv = dev->data->dev_private; 644 struct mlx5_dev_config *config = &priv->config; 645 unsigned int max; 646 char ifname[IF_NAMESIZE]; 647 648 info->pci_dev = RTE_ETH_DEV_TO_PCI(dev); 649 650 priv_lock(priv); 651 /* FIXME: we should ask the device for these values. */ 652 info->min_rx_bufsize = 32; 653 info->max_rx_pktlen = 65536; 654 /* 655 * Since we need one CQ per QP, the limit is the minimum number 656 * between the two values. 657 */ 658 max = RTE_MIN(priv->device_attr.orig_attr.max_cq, 659 priv->device_attr.orig_attr.max_qp); 660 /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */ 661 if (max >= 65535) 662 max = 65535; 663 info->max_rx_queues = max; 664 info->max_tx_queues = max; 665 info->max_mac_addrs = RTE_DIM(priv->mac); 666 info->rx_offload_capa = 667 (config->hw_csum ? 668 (DEV_RX_OFFLOAD_IPV4_CKSUM | 669 DEV_RX_OFFLOAD_UDP_CKSUM | 670 DEV_RX_OFFLOAD_TCP_CKSUM) : 671 0) | 672 (priv->config.hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0) | 673 DEV_RX_OFFLOAD_TIMESTAMP; 674 675 if (!config->mps) 676 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT; 677 if (config->hw_csum) 678 info->tx_offload_capa |= 679 (DEV_TX_OFFLOAD_IPV4_CKSUM | 680 DEV_TX_OFFLOAD_UDP_CKSUM | 681 DEV_TX_OFFLOAD_TCP_CKSUM); 682 if (config->tso) 683 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO; 684 if (config->tunnel_en) 685 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM | 686 DEV_TX_OFFLOAD_VXLAN_TNL_TSO | 687 DEV_TX_OFFLOAD_GRE_TNL_TSO); 688 if (priv_get_ifname(priv, &ifname) == 0) 689 info->if_index = if_nametoindex(ifname); 690 info->reta_size = priv->reta_idx_n ? 691 priv->reta_idx_n : config->ind_table_max_size; 692 info->hash_key_size = priv->rss_conf.rss_key_len; 693 info->speed_capa = priv->link_speed_capa; 694 priv_unlock(priv); 695 } 696 697 const uint32_t * 698 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev) 699 { 700 static const uint32_t ptypes[] = { 701 /* refers to rxq_cq_to_pkt_type() */ 702 RTE_PTYPE_L2_ETHER, 703 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN, 704 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN, 705 RTE_PTYPE_L4_NONFRAG, 706 RTE_PTYPE_L4_FRAG, 707 RTE_PTYPE_L4_TCP, 708 RTE_PTYPE_L4_UDP, 709 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN, 710 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN, 711 RTE_PTYPE_INNER_L4_NONFRAG, 712 RTE_PTYPE_INNER_L4_FRAG, 713 RTE_PTYPE_INNER_L4_TCP, 714 RTE_PTYPE_INNER_L4_UDP, 715 RTE_PTYPE_UNKNOWN 716 }; 717 718 if (dev->rx_pkt_burst == mlx5_rx_burst || 719 dev->rx_pkt_burst == mlx5_rx_burst_vec) 720 return ptypes; 721 return NULL; 722 } 723 724 /** 725 * DPDK callback to retrieve physical link information. 726 * 727 * @param dev 728 * Pointer to Ethernet device structure. 729 * @param wait_to_complete 730 * Wait for request completion (ignored). 731 */ 732 static int 733 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete) 734 { 735 struct priv *priv = dev->data->dev_private; 736 struct ethtool_cmd edata = { 737 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */ 738 }; 739 struct ifreq ifr; 740 struct rte_eth_link dev_link; 741 int link_speed = 0; 742 743 /* priv_lock() is not taken to allow concurrent calls. */ 744 745 (void)wait_to_complete; 746 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 747 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 748 return -1; 749 } 750 memset(&dev_link, 0, sizeof(dev_link)); 751 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 752 (ifr.ifr_flags & IFF_RUNNING)); 753 ifr.ifr_data = (void *)&edata; 754 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 755 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s", 756 strerror(errno)); 757 return -1; 758 } 759 link_speed = ethtool_cmd_speed(&edata); 760 if (link_speed == -1) 761 dev_link.link_speed = 0; 762 else 763 dev_link.link_speed = link_speed; 764 priv->link_speed_capa = 0; 765 if (edata.supported & SUPPORTED_Autoneg) 766 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 767 if (edata.supported & (SUPPORTED_1000baseT_Full | 768 SUPPORTED_1000baseKX_Full)) 769 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 770 if (edata.supported & SUPPORTED_10000baseKR_Full) 771 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 772 if (edata.supported & (SUPPORTED_40000baseKR4_Full | 773 SUPPORTED_40000baseCR4_Full | 774 SUPPORTED_40000baseSR4_Full | 775 SUPPORTED_40000baseLR4_Full)) 776 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 777 dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ? 778 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 779 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 780 ETH_LINK_SPEED_FIXED); 781 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 782 /* Link status changed. */ 783 dev->data->dev_link = dev_link; 784 return 0; 785 } 786 /* Link status is still the same. */ 787 return -1; 788 } 789 790 /** 791 * Retrieve physical link information (unlocked version using new ioctl). 792 * 793 * @param dev 794 * Pointer to Ethernet device structure. 795 * @param wait_to_complete 796 * Wait for request completion (ignored). 797 */ 798 static int 799 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete) 800 { 801 struct priv *priv = dev->data->dev_private; 802 struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS }; 803 struct ifreq ifr; 804 struct rte_eth_link dev_link; 805 uint64_t sc; 806 807 (void)wait_to_complete; 808 if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) { 809 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno)); 810 return -1; 811 } 812 memset(&dev_link, 0, sizeof(dev_link)); 813 dev_link.link_status = ((ifr.ifr_flags & IFF_UP) && 814 (ifr.ifr_flags & IFF_RUNNING)); 815 ifr.ifr_data = (void *)&gcmd; 816 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 817 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 818 strerror(errno)); 819 return -1; 820 } 821 gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords; 822 823 alignas(struct ethtool_link_settings) 824 uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) + 825 sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3]; 826 struct ethtool_link_settings *ecmd = (void *)data; 827 828 *ecmd = gcmd; 829 ifr.ifr_data = (void *)ecmd; 830 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 831 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s", 832 strerror(errno)); 833 return -1; 834 } 835 dev_link.link_speed = ecmd->speed; 836 sc = ecmd->link_mode_masks[0] | 837 ((uint64_t)ecmd->link_mode_masks[1] << 32); 838 priv->link_speed_capa = 0; 839 if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT)) 840 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG; 841 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) | 842 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))) 843 priv->link_speed_capa |= ETH_LINK_SPEED_1G; 844 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) | 845 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) | 846 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))) 847 priv->link_speed_capa |= ETH_LINK_SPEED_10G; 848 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) | 849 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))) 850 priv->link_speed_capa |= ETH_LINK_SPEED_20G; 851 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) | 852 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) | 853 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) | 854 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))) 855 priv->link_speed_capa |= ETH_LINK_SPEED_40G; 856 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) | 857 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) | 858 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) | 859 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))) 860 priv->link_speed_capa |= ETH_LINK_SPEED_56G; 861 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) | 862 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) | 863 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))) 864 priv->link_speed_capa |= ETH_LINK_SPEED_25G; 865 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) | 866 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))) 867 priv->link_speed_capa |= ETH_LINK_SPEED_50G; 868 if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) | 869 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) | 870 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) | 871 MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))) 872 priv->link_speed_capa |= ETH_LINK_SPEED_100G; 873 dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ? 874 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX); 875 dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds & 876 ETH_LINK_SPEED_FIXED); 877 if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) { 878 /* Link status changed. */ 879 dev->data->dev_link = dev_link; 880 return 0; 881 } 882 /* Link status is still the same. */ 883 return -1; 884 } 885 886 /** 887 * DPDK callback to retrieve physical link information. 888 * 889 * @param dev 890 * Pointer to Ethernet device structure. 891 * @param wait_to_complete 892 * Wait for request completion (ignored). 893 */ 894 int 895 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete) 896 { 897 struct utsname utsname; 898 int ver[3]; 899 900 if (uname(&utsname) == -1 || 901 sscanf(utsname.release, "%d.%d.%d", 902 &ver[0], &ver[1], &ver[2]) != 3 || 903 KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0)) 904 return mlx5_link_update_unlocked_gset(dev, wait_to_complete); 905 return mlx5_link_update_unlocked_gs(dev, wait_to_complete); 906 } 907 908 /** 909 * DPDK callback to change the MTU. 910 * 911 * @param dev 912 * Pointer to Ethernet device structure. 913 * @param in_mtu 914 * New MTU. 915 * 916 * @return 917 * 0 on success, negative errno value on failure. 918 */ 919 int 920 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu) 921 { 922 struct priv *priv = dev->data->dev_private; 923 uint16_t kern_mtu; 924 int ret = 0; 925 926 priv_lock(priv); 927 ret = priv_get_mtu(priv, &kern_mtu); 928 if (ret) 929 goto out; 930 /* Set kernel interface MTU first. */ 931 ret = priv_set_mtu(priv, mtu); 932 if (ret) 933 goto out; 934 ret = priv_get_mtu(priv, &kern_mtu); 935 if (ret) 936 goto out; 937 if (kern_mtu == mtu) { 938 priv->mtu = mtu; 939 DEBUG("adapter port %u MTU set to %u", priv->port, mtu); 940 } 941 priv_unlock(priv); 942 return 0; 943 out: 944 ret = errno; 945 WARN("cannot set port %u MTU to %u: %s", priv->port, mtu, 946 strerror(ret)); 947 priv_unlock(priv); 948 assert(ret >= 0); 949 return -ret; 950 } 951 952 /** 953 * DPDK callback to get flow control status. 954 * 955 * @param dev 956 * Pointer to Ethernet device structure. 957 * @param[out] fc_conf 958 * Flow control output buffer. 959 * 960 * @return 961 * 0 on success, negative errno value on failure. 962 */ 963 int 964 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 965 { 966 struct priv *priv = dev->data->dev_private; 967 struct ifreq ifr; 968 struct ethtool_pauseparam ethpause = { 969 .cmd = ETHTOOL_GPAUSEPARAM 970 }; 971 int ret; 972 973 ifr.ifr_data = (void *)ðpause; 974 priv_lock(priv); 975 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 976 ret = errno; 977 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)" 978 " failed: %s", 979 strerror(ret)); 980 goto out; 981 } 982 983 fc_conf->autoneg = ethpause.autoneg; 984 if (ethpause.rx_pause && ethpause.tx_pause) 985 fc_conf->mode = RTE_FC_FULL; 986 else if (ethpause.rx_pause) 987 fc_conf->mode = RTE_FC_RX_PAUSE; 988 else if (ethpause.tx_pause) 989 fc_conf->mode = RTE_FC_TX_PAUSE; 990 else 991 fc_conf->mode = RTE_FC_NONE; 992 ret = 0; 993 994 out: 995 priv_unlock(priv); 996 assert(ret >= 0); 997 return -ret; 998 } 999 1000 /** 1001 * DPDK callback to modify flow control parameters. 1002 * 1003 * @param dev 1004 * Pointer to Ethernet device structure. 1005 * @param[in] fc_conf 1006 * Flow control parameters. 1007 * 1008 * @return 1009 * 0 on success, negative errno value on failure. 1010 */ 1011 int 1012 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf) 1013 { 1014 struct priv *priv = dev->data->dev_private; 1015 struct ifreq ifr; 1016 struct ethtool_pauseparam ethpause = { 1017 .cmd = ETHTOOL_SPAUSEPARAM 1018 }; 1019 int ret; 1020 1021 ifr.ifr_data = (void *)ðpause; 1022 ethpause.autoneg = fc_conf->autoneg; 1023 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1024 (fc_conf->mode & RTE_FC_RX_PAUSE)) 1025 ethpause.rx_pause = 1; 1026 else 1027 ethpause.rx_pause = 0; 1028 1029 if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) || 1030 (fc_conf->mode & RTE_FC_TX_PAUSE)) 1031 ethpause.tx_pause = 1; 1032 else 1033 ethpause.tx_pause = 0; 1034 1035 priv_lock(priv); 1036 if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) { 1037 ret = errno; 1038 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)" 1039 " failed: %s", 1040 strerror(ret)); 1041 goto out; 1042 } 1043 ret = 0; 1044 1045 out: 1046 priv_unlock(priv); 1047 assert(ret >= 0); 1048 return -ret; 1049 } 1050 1051 /** 1052 * Get PCI information from struct ibv_device. 1053 * 1054 * @param device 1055 * Pointer to Ethernet device structure. 1056 * @param[out] pci_addr 1057 * PCI bus address output buffer. 1058 * 1059 * @return 1060 * 0 on success, -1 on failure and errno is set. 1061 */ 1062 int 1063 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device, 1064 struct rte_pci_addr *pci_addr) 1065 { 1066 FILE *file; 1067 char line[32]; 1068 MKSTR(path, "%s/device/uevent", device->ibdev_path); 1069 1070 file = fopen(path, "rb"); 1071 if (file == NULL) 1072 return -1; 1073 while (fgets(line, sizeof(line), file) == line) { 1074 size_t len = strlen(line); 1075 int ret; 1076 1077 /* Truncate long lines. */ 1078 if (len == (sizeof(line) - 1)) 1079 while (line[(len - 1)] != '\n') { 1080 ret = fgetc(file); 1081 if (ret == EOF) 1082 break; 1083 line[(len - 1)] = ret; 1084 } 1085 /* Extract information. */ 1086 if (sscanf(line, 1087 "PCI_SLOT_NAME=" 1088 "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n", 1089 &pci_addr->domain, 1090 &pci_addr->bus, 1091 &pci_addr->devid, 1092 &pci_addr->function) == 4) { 1093 ret = 0; 1094 break; 1095 } 1096 } 1097 fclose(file); 1098 return 0; 1099 } 1100 1101 /** 1102 * Update the link status. 1103 * 1104 * @param priv 1105 * Pointer to private structure. 1106 * 1107 * @return 1108 * Zero if the callback process can be called immediately. 1109 */ 1110 static int 1111 priv_link_status_update(struct priv *priv) 1112 { 1113 struct rte_eth_link *link = &priv->dev->data->dev_link; 1114 1115 mlx5_link_update(priv->dev, 0); 1116 if (((link->link_speed == 0) && link->link_status) || 1117 ((link->link_speed != 0) && !link->link_status)) { 1118 /* 1119 * Inconsistent status. Event likely occurred before the 1120 * kernel netdevice exposes the new status. 1121 */ 1122 if (!priv->pending_alarm) { 1123 priv->pending_alarm = 1; 1124 rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US, 1125 mlx5_dev_link_status_handler, 1126 priv->dev); 1127 } 1128 return 1; 1129 } else if (unlikely(priv->pending_alarm)) { 1130 /* Link interrupt occurred while alarm is already scheduled. */ 1131 priv->pending_alarm = 0; 1132 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev); 1133 } 1134 return 0; 1135 } 1136 1137 /** 1138 * Device status handler. 1139 * 1140 * @param priv 1141 * Pointer to private structure. 1142 * @param events 1143 * Pointer to event flags holder. 1144 * 1145 * @return 1146 * Events bitmap of callback process which can be called immediately. 1147 */ 1148 static uint32_t 1149 priv_dev_status_handler(struct priv *priv) 1150 { 1151 struct ibv_async_event event; 1152 uint32_t ret = 0; 1153 1154 /* Read all message and acknowledge them. */ 1155 for (;;) { 1156 if (ibv_get_async_event(priv->ctx, &event)) 1157 break; 1158 if ((event.event_type == IBV_EVENT_PORT_ACTIVE || 1159 event.event_type == IBV_EVENT_PORT_ERR) && 1160 (priv->dev->data->dev_conf.intr_conf.lsc == 1)) 1161 ret |= (1 << RTE_ETH_EVENT_INTR_LSC); 1162 else if (event.event_type == IBV_EVENT_DEVICE_FATAL && 1163 priv->dev->data->dev_conf.intr_conf.rmv == 1) 1164 ret |= (1 << RTE_ETH_EVENT_INTR_RMV); 1165 else 1166 DEBUG("event type %d on port %d not handled", 1167 event.event_type, event.element.port_num); 1168 ibv_ack_async_event(&event); 1169 } 1170 if (ret & (1 << RTE_ETH_EVENT_INTR_LSC)) 1171 if (priv_link_status_update(priv)) 1172 ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC); 1173 return ret; 1174 } 1175 1176 /** 1177 * Handle delayed link status event. 1178 * 1179 * @param arg 1180 * Registered argument. 1181 */ 1182 void 1183 mlx5_dev_link_status_handler(void *arg) 1184 { 1185 struct rte_eth_dev *dev = arg; 1186 struct priv *priv = dev->data->dev_private; 1187 int ret; 1188 1189 priv_lock(priv); 1190 assert(priv->pending_alarm == 1); 1191 priv->pending_alarm = 0; 1192 ret = priv_link_status_update(priv); 1193 priv_unlock(priv); 1194 if (!ret) 1195 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL, 1196 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 NULL); 1220 if (events & (1 << RTE_ETH_EVENT_INTR_RMV)) 1221 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL, 1222 NULL); 1223 } 1224 1225 /** 1226 * Handle interrupts from the socket. 1227 * 1228 * @param cb_arg 1229 * Callback argument. 1230 */ 1231 static void 1232 mlx5_dev_handler_socket(void *cb_arg) 1233 { 1234 struct rte_eth_dev *dev = cb_arg; 1235 struct priv *priv = dev->data->dev_private; 1236 1237 priv_lock(priv); 1238 priv_socket_handle(priv); 1239 priv_unlock(priv); 1240 } 1241 1242 /** 1243 * Uninstall interrupt handler. 1244 * 1245 * @param priv 1246 * Pointer to private structure. 1247 * @param dev 1248 * Pointer to the rte_eth_dev structure. 1249 */ 1250 void 1251 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev) 1252 { 1253 if (dev->data->dev_conf.intr_conf.lsc || 1254 dev->data->dev_conf.intr_conf.rmv) 1255 rte_intr_callback_unregister(&priv->intr_handle, 1256 mlx5_dev_interrupt_handler, dev); 1257 if (priv->primary_socket) 1258 rte_intr_callback_unregister(&priv->intr_handle_socket, 1259 mlx5_dev_handler_socket, dev); 1260 if (priv->pending_alarm) 1261 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev); 1262 priv->pending_alarm = 0; 1263 priv->intr_handle.fd = 0; 1264 priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN; 1265 priv->intr_handle_socket.fd = 0; 1266 priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN; 1267 } 1268 1269 /** 1270 * Install interrupt handler. 1271 * 1272 * @param priv 1273 * Pointer to private structure. 1274 * @param dev 1275 * Pointer to the rte_eth_dev structure. 1276 */ 1277 void 1278 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev) 1279 { 1280 int rc, flags; 1281 1282 assert(priv->ctx->async_fd > 0); 1283 flags = fcntl(priv->ctx->async_fd, F_GETFL); 1284 rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK); 1285 if (rc < 0) { 1286 INFO("failed to change file descriptor async event queue"); 1287 dev->data->dev_conf.intr_conf.lsc = 0; 1288 dev->data->dev_conf.intr_conf.rmv = 0; 1289 } 1290 if (dev->data->dev_conf.intr_conf.lsc || 1291 dev->data->dev_conf.intr_conf.rmv) { 1292 priv->intr_handle.fd = priv->ctx->async_fd; 1293 priv->intr_handle.type = RTE_INTR_HANDLE_EXT; 1294 rte_intr_callback_register(&priv->intr_handle, 1295 mlx5_dev_interrupt_handler, dev); 1296 } 1297 1298 rc = priv_socket_init(priv); 1299 if (!rc && priv->primary_socket) { 1300 priv->intr_handle_socket.fd = priv->primary_socket; 1301 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT; 1302 rte_intr_callback_register(&priv->intr_handle_socket, 1303 mlx5_dev_handler_socket, dev); 1304 } 1305 } 1306 1307 /** 1308 * Change the link state (UP / DOWN). 1309 * 1310 * @param priv 1311 * Pointer to private data structure. 1312 * @param dev 1313 * Pointer to rte_eth_dev structure. 1314 * @param up 1315 * Nonzero for link up, otherwise link down. 1316 * 1317 * @return 1318 * 0 on success, errno value on failure. 1319 */ 1320 static int 1321 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up) 1322 { 1323 int err; 1324 1325 if (up) { 1326 err = priv_set_flags(priv, ~IFF_UP, IFF_UP); 1327 if (err) 1328 return err; 1329 dev->tx_pkt_burst = priv_select_tx_function(priv, dev); 1330 dev->rx_pkt_burst = priv_select_rx_function(priv, dev); 1331 } else { 1332 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP); 1333 if (err) 1334 return err; 1335 dev->rx_pkt_burst = removed_rx_burst; 1336 dev->tx_pkt_burst = removed_tx_burst; 1337 } 1338 return 0; 1339 } 1340 1341 /** 1342 * DPDK callback to bring the link DOWN. 1343 * 1344 * @param dev 1345 * Pointer to Ethernet device structure. 1346 * 1347 * @return 1348 * 0 on success, errno value on failure. 1349 */ 1350 int 1351 mlx5_set_link_down(struct rte_eth_dev *dev) 1352 { 1353 struct priv *priv = dev->data->dev_private; 1354 int err; 1355 1356 priv_lock(priv); 1357 err = priv_dev_set_link(priv, dev, 0); 1358 priv_unlock(priv); 1359 return err; 1360 } 1361 1362 /** 1363 * DPDK callback to bring the link UP. 1364 * 1365 * @param dev 1366 * Pointer to Ethernet device structure. 1367 * 1368 * @return 1369 * 0 on success, errno value on failure. 1370 */ 1371 int 1372 mlx5_set_link_up(struct rte_eth_dev *dev) 1373 { 1374 struct priv *priv = dev->data->dev_private; 1375 int err; 1376 1377 priv_lock(priv); 1378 err = priv_dev_set_link(priv, dev, 1); 1379 priv_unlock(priv); 1380 return err; 1381 } 1382 1383 /** 1384 * Configure the TX function to use. 1385 * 1386 * @param priv 1387 * Pointer to private data structure. 1388 * @param dev 1389 * Pointer to rte_eth_dev structure. 1390 * 1391 * @return 1392 * Pointer to selected Tx burst function. 1393 */ 1394 eth_tx_burst_t 1395 priv_select_tx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) 1396 { 1397 eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst; 1398 struct mlx5_dev_config *config = &priv->config; 1399 1400 assert(priv != NULL); 1401 /* Select appropriate TX function. */ 1402 if (config->mps == MLX5_MPW_ENHANCED) { 1403 if (priv_check_vec_tx_support(priv) > 0) { 1404 if (priv_check_raw_vec_tx_support(priv) > 0) 1405 tx_pkt_burst = mlx5_tx_burst_raw_vec; 1406 else 1407 tx_pkt_burst = mlx5_tx_burst_vec; 1408 DEBUG("selected Enhanced MPW TX vectorized function"); 1409 } else { 1410 tx_pkt_burst = mlx5_tx_burst_empw; 1411 DEBUG("selected Enhanced MPW TX function"); 1412 } 1413 } else if (config->mps && (config->txq_inline > 0)) { 1414 tx_pkt_burst = mlx5_tx_burst_mpw_inline; 1415 DEBUG("selected MPW inline TX function"); 1416 } else if (config->mps) { 1417 tx_pkt_burst = mlx5_tx_burst_mpw; 1418 DEBUG("selected MPW TX function"); 1419 } 1420 return tx_pkt_burst; 1421 } 1422 1423 /** 1424 * Configure the RX function to use. 1425 * 1426 * @param priv 1427 * Pointer to private data structure. 1428 * @param dev 1429 * Pointer to rte_eth_dev structure. 1430 * 1431 * @return 1432 * Pointer to selected Rx burst function. 1433 */ 1434 eth_rx_burst_t 1435 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev) 1436 { 1437 eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst; 1438 1439 assert(priv != NULL); 1440 if (priv_check_vec_rx_support(priv) > 0) { 1441 rx_pkt_burst = mlx5_rx_burst_vec; 1442 DEBUG("selected RX vectorized function"); 1443 } 1444 return rx_pkt_burst; 1445 } 1446