drivers/net/mlx5/mlx5_ethdev.c

   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 <unistd.h>
  11 #include <stdint.h>
  12 #include <stdio.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <errno.h>
  16 #include <dirent.h>
  17 #include <net/if.h>
  18 #include <sys/ioctl.h>
  19 #include <sys/socket.h>
  20 #include <sys/utsname.h>
  21 #include <netinet/in.h>
  22 #include <linux/ethtool.h>
  23 #include <linux/sockios.h>
  24 #include <linux/version.h>
  25 #include <fcntl.h>
  26 #include <stdalign.h>
  27 #include <sys/un.h>
  28
  29 #include <rte_atomic.h>
  30 #include <rte_ethdev_driver.h>
  31 #include <rte_bus_pci.h>
  32 #include <rte_mbuf.h>
  33 #include <rte_common.h>
  34 #include <rte_interrupts.h>
  35 #include <rte_alarm.h>
  36 #include <rte_malloc.h>
  37
  38 #include "mlx5.h"
  39 #include "mlx5_glue.h"
  40 #include "mlx5_rxtx.h"
  41 #include "mlx5_utils.h"
  42
  43 /* Add defines in case the running kernel is not the same as user headers. */
  44 #ifndef ETHTOOL_GLINKSETTINGS
  45 struct ethtool_link_settings {
  46         uint32_t cmd;
  47         uint32_t speed;
  48         uint8_t duplex;
  49         uint8_t port;
  50         uint8_t phy_address;
  51         uint8_t autoneg;
  52         uint8_t mdio_support;
  53         uint8_t eth_to_mdix;
  54         uint8_t eth_tp_mdix_ctrl;
  55         int8_t link_mode_masks_nwords;
  56         uint32_t reserved[8];
  57         uint32_t link_mode_masks[];
  58 };
  59
  60 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  61 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  62 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  63 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  64 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  65 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  66 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  67 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  68 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  69 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  70 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  71 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  72 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  73 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
  74 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
  75 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
  76 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
  77 #endif
  78 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
  79 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
  80 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
  81 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
  82 #endif
  83 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
  84 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
  85 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
  86 #endif
  87 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
  88 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
  89 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
  90 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
  91 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
  92 #endif
  93
  94 /**
  95  * Get interface name from private structure.
  96  *
  97  * @param[in] priv
  98  *   Pointer to private structure.
  99  * @param[out] ifname
 100  *   Interface name output buffer.
 101  *
 102  * @return
 103  *   0 on success, -1 on failure and errno is set.
 104  */
 105 int
 106 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
 107 {
 108         DIR *dir;
 109         struct dirent *dent;
 110         unsigned int dev_type = 0;
 111         unsigned int dev_port_prev = ~0u;
 112         char match[IF_NAMESIZE] = "";
 113
 114         {
 115                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 116
 117                 dir = opendir(path);
 118                 if (dir == NULL)
 119                         return -1;
 120         }
 121         while ((dent = readdir(dir)) != NULL) {
 122                 char *name = dent->d_name;
 123                 FILE *file;
 124                 unsigned int dev_port;
 125                 int r;
 126
 127                 if ((name[0] == '.') &&
 128                     ((name[1] == '\0') ||
 129                      ((name[1] == '.') && (name[2] == '\0'))))
 130                         continue;
 131
 132                 MKSTR(path, "%s/device/net/%s/%s",
 133                       priv->ibdev_path, name,
 134                       (dev_type ? "dev_id" : "dev_port"));
 135
 136                 file = fopen(path, "rb");
 137                 if (file == NULL) {
 138                         if (errno != ENOENT)
 139                                 continue;
 140                         /*
 141                          * Switch to dev_id when dev_port does not exist as
 142                          * is the case with Linux kernel versions < 3.15.
 143                          */
 144 try_dev_id:
 145                         match[0] = '\0';
 146                         if (dev_type)
 147                                 break;
 148                         dev_type = 1;
 149                         dev_port_prev = ~0u;
 150                         rewinddir(dir);
 151                         continue;
 152                 }
 153                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 154                 fclose(file);
 155                 if (r != 1)
 156                         continue;
 157                 /*
 158                  * Switch to dev_id when dev_port returns the same value for
 159                  * all ports. May happen when using a MOFED release older than
 160                  * 3.0 with a Linux kernel >= 3.15.
 161                  */
 162                 if (dev_port == dev_port_prev)
 163                         goto try_dev_id;
 164                 dev_port_prev = dev_port;
 165                 if (dev_port == (priv->port - 1u))
 166                         snprintf(match, sizeof(match), "%s", name);
 167         }
 168         closedir(dir);
 169         if (match[0] == '\0')
 170                 return -1;
 171         strncpy(*ifname, match, sizeof(*ifname));
 172         return 0;
 173 }
 174
 175 /**
 176  * Check if the counter is located on ib counters file.
 177  *
 178  * @param[in] cntr
 179  *   Counter name.
 180  *
 181  * @return
 182  *   1 if counter is located on ib counters file , 0 otherwise.
 183  */
 184 int
 185 priv_is_ib_cntr(const char *cntr)
 186 {
 187         if (!strcmp(cntr, "out_of_buffer"))
 188                 return 1;
 189         return 0;
 190 }
 191
 192 /**
 193  * Read from sysfs entry.
 194  *
 195  * @param[in] priv
 196  *   Pointer to private structure.
 197  * @param[in] entry
 198  *   Entry name relative to sysfs path.
 199  * @param[out] buf
 200  *   Data output buffer.
 201  * @param size
 202  *   Buffer size.
 203  *
 204  * @return
 205  *   0 on success, -1 on failure and errno is set.
 206  */
 207 static int
 208 priv_sysfs_read(const struct priv *priv, const char *entry,
 209                 char *buf, size_t size)
 210 {
 211         char ifname[IF_NAMESIZE];
 212         FILE *file;
 213         int ret;
 214         int err;
 215
 216         if (priv_get_ifname(priv, &ifname))
 217                 return -1;
 218
 219         if (priv_is_ib_cntr(entry)) {
 220                 MKSTR(path, "%s/ports/1/hw_counters/%s",
 221                       priv->ibdev_path, entry);
 222                 file = fopen(path, "rb");
 223         } else {
 224                 MKSTR(path, "%s/device/net/%s/%s",
 225                       priv->ibdev_path, ifname, entry);
 226                 file = fopen(path, "rb");
 227         }
 228         if (file == NULL)
 229                 return -1;
 230         ret = fread(buf, 1, size, file);
 231         err = errno;
 232         if (((size_t)ret < size) && (ferror(file)))
 233                 ret = -1;
 234         else
 235                 ret = size;
 236         fclose(file);
 237         errno = err;
 238         return ret;
 239 }
 240
 241 /**
 242  * Write to sysfs entry.
 243  *
 244  * @param[in] priv
 245  *   Pointer to private structure.
 246  * @param[in] entry
 247  *   Entry name relative to sysfs path.
 248  * @param[in] buf
 249  *   Data buffer.
 250  * @param size
 251  *   Buffer size.
 252  *
 253  * @return
 254  *   0 on success, -1 on failure and errno is set.
 255  */
 256 static int
 257 priv_sysfs_write(const struct priv *priv, const char *entry,
 258                  char *buf, size_t size)
 259 {
 260         char ifname[IF_NAMESIZE];
 261         FILE *file;
 262         int ret;
 263         int err;
 264
 265         if (priv_get_ifname(priv, &ifname))
 266                 return -1;
 267
 268         MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry);
 269
 270         file = fopen(path, "wb");
 271         if (file == NULL)
 272                 return -1;
 273         ret = fwrite(buf, 1, size, file);
 274         err = errno;
 275         if (((size_t)ret < size) || (ferror(file)))
 276                 ret = -1;
 277         else
 278                 ret = size;
 279         fclose(file);
 280         errno = err;
 281         return ret;
 282 }
 283
 284 /**
 285  * Get unsigned long sysfs property.
 286  *
 287  * @param priv
 288  *   Pointer to private structure.
 289  * @param[in] name
 290  *   Entry name relative to sysfs path.
 291  * @param[out] value
 292  *   Value output buffer.
 293  *
 294  * @return
 295  *   0 on success, -1 on failure and errno is set.
 296  */
 297 static int
 298 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
 299 {
 300         int ret;
 301         unsigned long value_ret;
 302         char value_str[32];
 303
 304         ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
 305         if (ret == -1) {
 306                 DEBUG("cannot read %s value from sysfs: %s",
 307                       name, strerror(errno));
 308                 return -1;
 309         }
 310         value_str[ret] = '\0';
 311         errno = 0;
 312         value_ret = strtoul(value_str, NULL, 0);
 313         if (errno) {
 314                 DEBUG("invalid %s value `%s': %s", name, value_str,
 315                       strerror(errno));
 316                 return -1;
 317         }
 318         *value = value_ret;
 319         return 0;
 320 }
 321
 322 /**
 323  * Set unsigned long sysfs property.
 324  *
 325  * @param priv
 326  *   Pointer to private structure.
 327  * @param[in] name
 328  *   Entry name relative to sysfs path.
 329  * @param value
 330  *   Value to set.
 331  *
 332  * @return
 333  *   0 on success, -1 on failure and errno is set.
 334  */
 335 static int
 336 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
 337 {
 338         int ret;
 339         MKSTR(value_str, "%lu", value);
 340
 341         ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
 342         if (ret == -1) {
 343                 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
 344                       name, value_str, value, strerror(errno));
 345                 return -1;
 346         }
 347         return 0;
 348 }
 349
 350 /**
 351  * Perform ifreq ioctl() on associated Ethernet device.
 352  *
 353  * @param[in] priv
 354  *   Pointer to private structure.
 355  * @param req
 356  *   Request number to pass to ioctl().
 357  * @param[out] ifr
 358  *   Interface request structure output buffer.
 359  *
 360  * @return
 361  *   0 on success, -1 on failure and errno is set.
 362  */
 363 int
 364 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
 365 {
 366         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 367         int ret = -1;
 368
 369         if (sock == -1)
 370                 return ret;
 371         if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
 372                 ret = ioctl(sock, req, ifr);
 373         close(sock);
 374         return ret;
 375 }
 376
 377 /**
 378  * Return the number of active VFs for the current device.
 379  *
 380  * @param[in] priv
 381  *   Pointer to private structure.
 382  * @param[out] num_vfs
 383  *   Number of active VFs.
 384  *
 385  * @return
 386  *   0 on success, -1 on failure and errno is set.
 387  */
 388 int
 389 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
 390 {
 391         /* The sysfs entry name depends on the operating system. */
 392         const char **name = (const char *[]){
 393                 "device/sriov_numvfs",
 394                 "device/mlx5_num_vfs",
 395                 NULL,
 396         };
 397         int ret;
 398
 399         do {
 400                 unsigned long ulong_num_vfs;
 401
 402                 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
 403                 if (!ret)
 404                         *num_vfs = ulong_num_vfs;
 405         } while (*(++name) && ret);
 406         return ret;
 407 }
 408
 409 /**
 410  * Get device MTU.
 411  *
 412  * @param priv
 413  *   Pointer to private structure.
 414  * @param[out] mtu
 415  *   MTU value output buffer.
 416  *
 417  * @return
 418  *   0 on success, -1 on failure and errno is set.
 419  */
 420 int
 421 priv_get_mtu(struct priv *priv, uint16_t *mtu)
 422 {
 423         unsigned long ulong_mtu;
 424
 425         if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
 426                 return -1;
 427         *mtu = ulong_mtu;
 428         return 0;
 429 }
 430
 431 /**
 432  * Read device counter from sysfs.
 433  *
 434  * @param priv
 435  *   Pointer to private structure.
 436  * @param name
 437  *   Counter name.
 438  * @param[out] cntr
 439  *   Counter output buffer.
 440  *
 441  * @return
 442  *   0 on success, -1 on failure and errno is set.
 443  */
 444 int
 445 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
 446 {
 447         unsigned long ulong_ctr;
 448
 449         if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
 450                 return -1;
 451         *cntr = ulong_ctr;
 452         return 0;
 453 }
 454
 455 /**
 456  * Set device MTU.
 457  *
 458  * @param priv
 459  *   Pointer to private structure.
 460  * @param mtu
 461  *   MTU value to set.
 462  *
 463  * @return
 464  *   0 on success, -1 on failure and errno is set.
 465  */
 466 static int
 467 priv_set_mtu(struct priv *priv, uint16_t mtu)
 468 {
 469         uint16_t new_mtu;
 470
 471         if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
 472             priv_get_mtu(priv, &new_mtu))
 473                 return -1;
 474         if (new_mtu == mtu)
 475                 return 0;
 476         errno = EINVAL;
 477         return -1;
 478 }
 479
 480 /**
 481  * Set device flags.
 482  *
 483  * @param priv
 484  *   Pointer to private structure.
 485  * @param keep
 486  *   Bitmask for flags that must remain untouched.
 487  * @param flags
 488  *   Bitmask for flags to modify.
 489  *
 490  * @return
 491  *   0 on success, -1 on failure and errno is set.
 492  */
 493 int
 494 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
 495 {
 496         unsigned long tmp;
 497
 498         if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
 499                 return -1;
 500         tmp &= keep;
 501         tmp |= (flags & (~keep));
 502         return priv_set_sysfs_ulong(priv, "flags", tmp);
 503 }
 504
 505 /**
 506  * Ethernet device configuration.
 507  *
 508  * Prepare the driver for a given number of TX and RX queues.
 509  *
 510  * @param dev
 511  *   Pointer to Ethernet device structure.
 512  *
 513  * @return
 514  *   0 on success, errno value on failure.
 515  */
 516 static int
 517 dev_configure(struct rte_eth_dev *dev)
 518 {
 519         struct priv *priv = dev->data->dev_private;
 520         unsigned int rxqs_n = dev->data->nb_rx_queues;
 521         unsigned int txqs_n = dev->data->nb_tx_queues;
 522         unsigned int i;
 523         unsigned int j;
 524         unsigned int reta_idx_n;
 525         const uint8_t use_app_rss_key =
 526                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key;
 527         uint64_t supp_tx_offloads = mlx5_priv_get_tx_port_offloads(priv);
 528         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
 529         uint64_t supp_rx_offloads =
 530                 (mlx5_priv_get_rx_port_offloads(priv) |
 531                  mlx5_priv_get_rx_queue_offloads(priv));
 532         uint64_t rx_offloads = dev->data->dev_conf.rxmode.offloads;
 533
 534         if ((tx_offloads & supp_tx_offloads) != tx_offloads) {
 535                 ERROR("Some Tx offloads are not supported "
 536                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 537                       tx_offloads, supp_tx_offloads);
 538                 return ENOTSUP;
 539         }
 540         if ((rx_offloads & supp_rx_offloads) != rx_offloads) {
 541                 ERROR("Some Rx offloads are not supported "
 542                       "requested 0x%" PRIx64 " supported 0x%" PRIx64,
 543                       rx_offloads, supp_rx_offloads);
 544                 return ENOTSUP;
 545         }
 546         if (use_app_rss_key &&
 547             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 548              rss_hash_default_key_len)) {
 549                 /* MLX5 RSS only support 40bytes key. */
 550                 return EINVAL;
 551         }
 552         priv->rss_conf.rss_key =
 553                 rte_realloc(priv->rss_conf.rss_key,
 554                             rss_hash_default_key_len, 0);
 555         if (!priv->rss_conf.rss_key) {
 556                 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
 557                 return ENOMEM;
 558         }
 559         memcpy(priv->rss_conf.rss_key,
 560                use_app_rss_key ?
 561                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 562                rss_hash_default_key,
 563                rss_hash_default_key_len);
 564         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 565         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 566         priv->rxqs = (void *)dev->data->rx_queues;
 567         priv->txqs = (void *)dev->data->tx_queues;
 568         if (txqs_n != priv->txqs_n) {
 569                 INFO("%p: TX queues number update: %u -> %u",
 570                      (void *)dev, priv->txqs_n, txqs_n);
 571                 priv->txqs_n = txqs_n;
 572         }
 573         if (rxqs_n > priv->config.ind_table_max_size) {
 574                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 575                 return EINVAL;
 576         }
 577         if (rxqs_n == priv->rxqs_n)
 578                 return 0;
 579         INFO("%p: RX queues number update: %u -> %u",
 580              (void *)dev, priv->rxqs_n, rxqs_n);
 581         priv->rxqs_n = rxqs_n;
 582         /* If the requested number of RX queues is not a power of two, use the
 583          * maximum indirection table size for better balancing.
 584          * The result is always rounded to the next power of two. */
 585         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 586                                      priv->config.ind_table_max_size :
 587                                      rxqs_n));
 588         if (priv_rss_reta_index_resize(priv, reta_idx_n))
 589                 return ENOMEM;
 590         /* When the number of RX queues is not a power of two, the remaining
 591          * table entries are padded with reused WQs and hashes are not spread
 592          * uniformly. */
 593         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 594                 (*priv->reta_idx)[i] = j;
 595                 if (++j == rxqs_n)
 596                         j = 0;
 597         }
 598         return 0;
 599 }
 600
 601 /**
 602  * DPDK callback for Ethernet device configuration.
 603  *
 604  * @param dev
 605  *   Pointer to Ethernet device structure.
 606  *
 607  * @return
 608  *   0 on success, negative errno value on failure.
 609  */
 610 int
 611 mlx5_dev_configure(struct rte_eth_dev *dev)
 612 {
 613         struct priv *priv = dev->data->dev_private;
 614         int ret;
 615
 616         priv_lock(priv);
 617         ret = dev_configure(dev);
 618         assert(ret >= 0);
 619         priv_unlock(priv);
 620         return -ret;
 621 }
 622
 623 /**
 624  * DPDK callback to get information about the device.
 625  *
 626  * @param dev
 627  *   Pointer to Ethernet device structure.
 628  * @param[out] info
 629  *   Info structure output buffer.
 630  */
 631 void
 632 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 633 {
 634         struct priv *priv = dev->data->dev_private;
 635         struct mlx5_dev_config *config = &priv->config;
 636         unsigned int max;
 637         char ifname[IF_NAMESIZE];
 638
 639         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 640
 641         priv_lock(priv);
 642         /* FIXME: we should ask the device for these values. */
 643         info->min_rx_bufsize = 32;
 644         info->max_rx_pktlen = 65536;
 645         /*
 646          * Since we need one CQ per QP, the limit is the minimum number
 647          * between the two values.
 648          */
 649         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 650                       priv->device_attr.orig_attr.max_qp);
 651         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 652         if (max >= 65535)
 653                 max = 65535;
 654         info->max_rx_queues = max;
 655         info->max_tx_queues = max;
 656         info->max_mac_addrs = RTE_DIM(priv->mac);
 657         info->rx_queue_offload_capa =
 658                 mlx5_priv_get_rx_queue_offloads(priv);
 659         info->rx_offload_capa = (mlx5_priv_get_rx_port_offloads(priv) |
 660                                  info->rx_queue_offload_capa);
 661         info->tx_offload_capa = mlx5_priv_get_tx_port_offloads(priv);
 662         if (priv_get_ifname(priv, &ifname) == 0)
 663                 info->if_index = if_nametoindex(ifname);
 664         info->reta_size = priv->reta_idx_n ?
 665                 priv->reta_idx_n : config->ind_table_max_size;
 666         info->hash_key_size = priv->rss_conf.rss_key_len;
 667         info->speed_capa = priv->link_speed_capa;
 668         info->flow_type_rss_offloads = ~MLX5_RSS_HF_MASK;
 669         priv_unlock(priv);
 670 }
 671
 672 const uint32_t *
 673 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 674 {
 675         static const uint32_t ptypes[] = {
 676                 /* refers to rxq_cq_to_pkt_type() */
 677                 RTE_PTYPE_L2_ETHER,
 678                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 679                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 680                 RTE_PTYPE_L4_NONFRAG,
 681                 RTE_PTYPE_L4_FRAG,
 682                 RTE_PTYPE_L4_TCP,
 683                 RTE_PTYPE_L4_UDP,
 684                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 685                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 686                 RTE_PTYPE_INNER_L4_NONFRAG,
 687                 RTE_PTYPE_INNER_L4_FRAG,
 688                 RTE_PTYPE_INNER_L4_TCP,
 689                 RTE_PTYPE_INNER_L4_UDP,
 690                 RTE_PTYPE_UNKNOWN
 691         };
 692
 693         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 694             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 695                 return ptypes;
 696         return NULL;
 697 }
 698
 699 /**
 700  * DPDK callback to retrieve physical link information.
 701  *
 702  * @param dev
 703  *   Pointer to Ethernet device structure.
 704  * @param wait_to_complete
 705  *   Wait for request completion (ignored).
 706  */
 707 static int
 708 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
 709 {
 710         struct priv *priv = dev->data->dev_private;
 711         struct ethtool_cmd edata = {
 712                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 713         };
 714         struct ifreq ifr;
 715         struct rte_eth_link dev_link;
 716         int link_speed = 0;
 717
 718         /* priv_lock() is not taken to allow concurrent calls. */
 719
 720         (void)wait_to_complete;
 721         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 722                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 723                 return -1;
 724         }
 725         memset(&dev_link, 0, sizeof(dev_link));
 726         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 727                                 (ifr.ifr_flags & IFF_RUNNING));
 728         ifr.ifr_data = (void *)&edata;
 729         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 730                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 731                      strerror(errno));
 732                 return -1;
 733         }
 734         link_speed = ethtool_cmd_speed(&edata);
 735         if (link_speed == -1)
 736                 dev_link.link_speed = 0;
 737         else
 738                 dev_link.link_speed = link_speed;
 739         priv->link_speed_capa = 0;
 740         if (edata.supported & SUPPORTED_Autoneg)
 741                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 742         if (edata.supported & (SUPPORTED_1000baseT_Full |
 743                                SUPPORTED_1000baseKX_Full))
 744                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 745         if (edata.supported & SUPPORTED_10000baseKR_Full)
 746                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 747         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 748                                SUPPORTED_40000baseCR4_Full |
 749                                SUPPORTED_40000baseSR4_Full |
 750                                SUPPORTED_40000baseLR4_Full))
 751                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 752         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 753                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 754         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 755                         ETH_LINK_SPEED_FIXED);
 756         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 757                 /* Link status changed. */
 758                 dev->data->dev_link = dev_link;
 759                 return 0;
 760         }
 761         /* Link status is still the same. */
 762         return -1;
 763 }
 764
 765 /**
 766  * Retrieve physical link information (unlocked version using new ioctl).
 767  *
 768  * @param dev
 769  *   Pointer to Ethernet device structure.
 770  * @param wait_to_complete
 771  *   Wait for request completion (ignored).
 772  */
 773 static int
 774 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
 775 {
 776         struct priv *priv = dev->data->dev_private;
 777         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 778         struct ifreq ifr;
 779         struct rte_eth_link dev_link;
 780         uint64_t sc;
 781
 782         (void)wait_to_complete;
 783         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 784                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 785                 return -1;
 786         }
 787         memset(&dev_link, 0, sizeof(dev_link));
 788         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 789                                 (ifr.ifr_flags & IFF_RUNNING));
 790         ifr.ifr_data = (void *)&gcmd;
 791         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 792                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 793                       strerror(errno));
 794                 return -1;
 795         }
 796         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 797
 798         alignas(struct ethtool_link_settings)
 799         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 800                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 801         struct ethtool_link_settings *ecmd = (void *)data;
 802
 803         *ecmd = gcmd;
 804         ifr.ifr_data = (void *)ecmd;
 805         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 806                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 807                       strerror(errno));
 808                 return -1;
 809         }
 810         dev_link.link_speed = ecmd->speed;
 811         sc = ecmd->link_mode_masks[0] |
 812                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 813         priv->link_speed_capa = 0;
 814         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 815                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 816         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 817                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 818                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 819         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 820                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 821                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 822                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 823         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 824                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 825                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 826         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 827                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 828                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 829                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 830                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 831         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 832                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 833                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 834                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 835                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 836         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 837                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 838                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 839                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 840         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 841                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 842                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 843         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 844                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 845                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 846                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 847                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 848         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 849                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 850         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 851                                   ETH_LINK_SPEED_FIXED);
 852         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 853                 /* Link status changed. */
 854                 dev->data->dev_link = dev_link;
 855                 return 0;
 856         }
 857         /* Link status is still the same. */
 858         return -1;
 859 }
 860
 861 /**
 862  * Enable receiving and transmitting traffic.
 863  *
 864  * @param priv
 865  *   Pointer to private structure.
 866  */
 867 static void
 868 priv_link_start(struct priv *priv)
 869 {
 870         struct rte_eth_dev *dev = priv->dev;
 871         int err;
 872
 873         dev->tx_pkt_burst = priv_select_tx_function(priv, dev);
 874         dev->rx_pkt_burst = priv_select_rx_function(priv, dev);
 875         err = priv_dev_traffic_enable(priv, dev);
 876         if (err)
 877                 ERROR("%p: error occurred while configuring control flows: %s",
 878                       (void *)priv, strerror(err));
 879         err = priv_flow_start(priv, &priv->flows);
 880         if (err)
 881                 ERROR("%p: error occurred while configuring flows: %s",
 882                       (void *)priv, strerror(err));
 883 }
 884
 885 /**
 886  * Disable receiving and transmitting traffic.
 887  *
 888  * @param priv
 889  *   Pointer to private structure.
 890  */
 891 static void
 892 priv_link_stop(struct priv *priv)
 893 {
 894         struct rte_eth_dev *dev = priv->dev;
 895
 896         priv_flow_stop(priv, &priv->flows);
 897         priv_dev_traffic_disable(priv, dev);
 898         dev->rx_pkt_burst = removed_rx_burst;
 899         dev->tx_pkt_burst = removed_tx_burst;
 900 }
 901
 902 /**
 903  * Retrieve physical link information and update rx/tx_pkt_burst callbacks
 904  * accordingly.
 905  *
 906  * @param priv
 907  *   Pointer to private structure.
 908  * @param wait_to_complete
 909  *   Wait for request completion (ignored).
 910  */
 911 int
 912 priv_link_update(struct priv *priv, int wait_to_complete)
 913 {
 914         struct rte_eth_dev *dev = priv->dev;
 915         struct utsname utsname;
 916         int ver[3];
 917         int ret;
 918         struct rte_eth_link dev_link = dev->data->dev_link;
 919
 920         if (uname(&utsname) == -1 ||
 921             sscanf(utsname.release, "%d.%d.%d",
 922                    &ver[0], &ver[1], &ver[2]) != 3 ||
 923             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 924                 ret = mlx5_link_update_unlocked_gset(dev, wait_to_complete);
 925         else
 926                 ret = mlx5_link_update_unlocked_gs(dev, wait_to_complete);
 927         /* If lsc interrupt is disabled, should always be ready for traffic. */
 928         if (!dev->data->dev_conf.intr_conf.lsc) {
 929                 priv_link_start(priv);
 930                 return ret;
 931         }
 932         /* Re-select burst callbacks only if link status has been changed. */
 933         if (!ret && dev_link.link_status != dev->data->dev_link.link_status) {
 934                 if (dev->data->dev_link.link_status == ETH_LINK_UP)
 935                         priv_link_start(priv);
 936                 else
 937                         priv_link_stop(priv);
 938         }
 939         return ret;
 940 }
 941
 942 /**
 943  * Querying the link status till it changes to the desired state.
 944  * Number of query attempts is bounded by MLX5_MAX_LINK_QUERY_ATTEMPTS.
 945  *
 946  * @param priv
 947  *   Pointer to private structure.
 948  * @param status
 949  *   Link desired status.
 950  *
 951  * @return
 952  *   0 on success, negative errno value on failure.
 953  */
 954 int
 955 priv_force_link_status_change(struct priv *priv, int status)
 956 {
 957         int try = 0;
 958
 959         while (try < MLX5_MAX_LINK_QUERY_ATTEMPTS) {
 960                 priv_link_update(priv, 0);
 961                 if (priv->dev->data->dev_link.link_status == status)
 962                         return 0;
 963                 try++;
 964                 sleep(1);
 965         }
 966         return -EAGAIN;
 967 }
 968
 969 /**
 970  * DPDK callback to retrieve physical link information.
 971  *
 972  * @param dev
 973  *   Pointer to Ethernet device structure.
 974  * @param wait_to_complete
 975  *   Wait for request completion (ignored).
 976  */
 977 int
 978 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 979 {
 980         struct priv *priv = dev->data->dev_private;
 981         int ret;
 982
 983         priv_lock(priv);
 984         ret = priv_link_update(priv, wait_to_complete);
 985         priv_unlock(priv);
 986         return ret;
 987 }
 988
 989 /**
 990  * DPDK callback to change the MTU.
 991  *
 992  * @param dev
 993  *   Pointer to Ethernet device structure.
 994  * @param in_mtu
 995  *   New MTU.
 996  *
 997  * @return
 998  *   0 on success, negative errno value on failure.
 999  */
1000 int
1001 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
1002 {
1003         struct priv *priv = dev->data->dev_private;
1004         uint16_t kern_mtu;
1005         int ret = 0;
1006
1007         priv_lock(priv);
1008         ret = priv_get_mtu(priv, &kern_mtu);
1009         if (ret)
1010                 goto out;
1011         /* Set kernel interface MTU first. */
1012         ret = priv_set_mtu(priv, mtu);
1013         if (ret)
1014                 goto out;
1015         ret = priv_get_mtu(priv, &kern_mtu);
1016         if (ret)
1017                 goto out;
1018         if (kern_mtu == mtu) {
1019                 priv->mtu = mtu;
1020                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
1021         }
1022         priv_unlock(priv);
1023         return 0;
1024 out:
1025         ret = errno;
1026         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
1027              strerror(ret));
1028         priv_unlock(priv);
1029         assert(ret >= 0);
1030         return -ret;
1031 }
1032
1033 /**
1034  * DPDK callback to get flow control status.
1035  *
1036  * @param dev
1037  *   Pointer to Ethernet device structure.
1038  * @param[out] fc_conf
1039  *   Flow control output buffer.
1040  *
1041  * @return
1042  *   0 on success, negative errno value on failure.
1043  */
1044 int
1045 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1046 {
1047         struct priv *priv = dev->data->dev_private;
1048         struct ifreq ifr;
1049         struct ethtool_pauseparam ethpause = {
1050                 .cmd = ETHTOOL_GPAUSEPARAM
1051         };
1052         int ret;
1053
1054         ifr.ifr_data = (void *)&ethpause;
1055         priv_lock(priv);
1056         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1057                 ret = errno;
1058                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
1059                      " failed: %s",
1060                      strerror(ret));
1061                 goto out;
1062         }
1063
1064         fc_conf->autoneg = ethpause.autoneg;
1065         if (ethpause.rx_pause && ethpause.tx_pause)
1066                 fc_conf->mode = RTE_FC_FULL;
1067         else if (ethpause.rx_pause)
1068                 fc_conf->mode = RTE_FC_RX_PAUSE;
1069         else if (ethpause.tx_pause)
1070                 fc_conf->mode = RTE_FC_TX_PAUSE;
1071         else
1072                 fc_conf->mode = RTE_FC_NONE;
1073         ret = 0;
1074
1075 out:
1076         priv_unlock(priv);
1077         assert(ret >= 0);
1078         return -ret;
1079 }
1080
1081 /**
1082  * DPDK callback to modify flow control parameters.
1083  *
1084  * @param dev
1085  *   Pointer to Ethernet device structure.
1086  * @param[in] fc_conf
1087  *   Flow control parameters.
1088  *
1089  * @return
1090  *   0 on success, negative errno value on failure.
1091  */
1092 int
1093 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1094 {
1095         struct priv *priv = dev->data->dev_private;
1096         struct ifreq ifr;
1097         struct ethtool_pauseparam ethpause = {
1098                 .cmd = ETHTOOL_SPAUSEPARAM
1099         };
1100         int ret;
1101
1102         ifr.ifr_data = (void *)&ethpause;
1103         ethpause.autoneg = fc_conf->autoneg;
1104         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1105             (fc_conf->mode & RTE_FC_RX_PAUSE))
1106                 ethpause.rx_pause = 1;
1107         else
1108                 ethpause.rx_pause = 0;
1109
1110         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1111             (fc_conf->mode & RTE_FC_TX_PAUSE))
1112                 ethpause.tx_pause = 1;
1113         else
1114                 ethpause.tx_pause = 0;
1115
1116         priv_lock(priv);
1117         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1118                 ret = errno;
1119                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1120                      " failed: %s",
1121                      strerror(ret));
1122                 goto out;
1123         }
1124         ret = 0;
1125
1126 out:
1127         priv_unlock(priv);
1128         assert(ret >= 0);
1129         return -ret;
1130 }
1131
1132 /**
1133  * Get PCI information from struct ibv_device.
1134  *
1135  * @param device
1136  *   Pointer to Ethernet device structure.
1137  * @param[out] pci_addr
1138  *   PCI bus address output buffer.
1139  *
1140  * @return
1141  *   0 on success, -1 on failure and errno is set.
1142  */
1143 int
1144 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1145                             struct rte_pci_addr *pci_addr)
1146 {
1147         FILE *file;
1148         char line[32];
1149         MKSTR(path, "%s/device/uevent", device->ibdev_path);
1150
1151         file = fopen(path, "rb");
1152         if (file == NULL)
1153                 return -1;
1154         while (fgets(line, sizeof(line), file) == line) {
1155                 size_t len = strlen(line);
1156                 int ret;
1157
1158                 /* Truncate long lines. */
1159                 if (len == (sizeof(line) - 1))
1160                         while (line[(len - 1)] != '\n') {
1161                                 ret = fgetc(file);
1162                                 if (ret == EOF)
1163                                         break;
1164                                 line[(len - 1)] = ret;
1165                         }
1166                 /* Extract information. */
1167                 if (sscanf(line,
1168                            "PCI_SLOT_NAME="
1169                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1170                            &pci_addr->domain,
1171                            &pci_addr->bus,
1172                            &pci_addr->devid,
1173                            &pci_addr->function) == 4) {
1174                         ret = 0;
1175                         break;
1176                 }
1177         }
1178         fclose(file);
1179         return 0;
1180 }
1181
1182 /**
1183  * Update the link status.
1184  *
1185  * @param priv
1186  *   Pointer to private structure.
1187  *
1188  * @return
1189  *   Zero if the callback process can be called immediately.
1190  */
1191 static int
1192 priv_link_status_update(struct priv *priv)
1193 {
1194         struct rte_eth_link *link = &priv->dev->data->dev_link;
1195
1196         priv_link_update(priv, 0);
1197         if (((link->link_speed == 0) && link->link_status) ||
1198                 ((link->link_speed != 0) && !link->link_status)) {
1199                 /*
1200                  * Inconsistent status. Event likely occurred before the
1201                  * kernel netdevice exposes the new status.
1202                  */
1203                 if (!priv->pending_alarm) {
1204                         priv->pending_alarm = 1;
1205                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1206                                           mlx5_dev_link_status_handler,
1207                                           priv->dev);
1208                 }
1209                 return 1;
1210         } else if (unlikely(priv->pending_alarm)) {
1211                 /* Link interrupt occurred while alarm is already scheduled. */
1212                 priv->pending_alarm = 0;
1213                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
1214         }
1215         return 0;
1216 }
1217
1218 /**
1219  * Device status handler.
1220  *
1221  * @param priv
1222  *   Pointer to private structure.
1223  * @param events
1224  *   Pointer to event flags holder.
1225  *
1226  * @return
1227  *   Events bitmap of callback process which can be called immediately.
1228  */
1229 static uint32_t
1230 priv_dev_status_handler(struct priv *priv)
1231 {
1232         struct ibv_async_event event;
1233         uint32_t ret = 0;
1234
1235         /* Read all message and acknowledge them. */
1236         for (;;) {
1237                 if (mlx5_glue->get_async_event(priv->ctx, &event))
1238                         break;
1239                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1240                         event.event_type == IBV_EVENT_PORT_ERR) &&
1241                         (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1242                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1243                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1244                         priv->dev->data->dev_conf.intr_conf.rmv == 1)
1245                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1246                 else
1247                         DEBUG("event type %d on port %d not handled",
1248                               event.event_type, event.element.port_num);
1249                 mlx5_glue->ack_async_event(&event);
1250         }
1251         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1252                 if (priv_link_status_update(priv))
1253                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1254         return ret;
1255 }
1256
1257 /**
1258  * Handle delayed link status event.
1259  *
1260  * @param arg
1261  *   Registered argument.
1262  */
1263 void
1264 mlx5_dev_link_status_handler(void *arg)
1265 {
1266         struct rte_eth_dev *dev = arg;
1267         struct priv *priv = dev->data->dev_private;
1268         int ret;
1269
1270         while (!priv_trylock(priv)) {
1271                 /* Alarm is being canceled. */
1272                 if (priv->pending_alarm == 0)
1273                         return;
1274                 rte_pause();
1275         }
1276         priv->pending_alarm = 0;
1277         ret = priv_link_status_update(priv);
1278         priv_unlock(priv);
1279         if (!ret)
1280                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1281 }
1282
1283 /**
1284  * Handle interrupts from the NIC.
1285  *
1286  * @param[in] intr_handle
1287  *   Interrupt handler.
1288  * @param cb_arg
1289  *   Callback argument.
1290  */
1291 void
1292 mlx5_dev_interrupt_handler(void *cb_arg)
1293 {
1294         struct rte_eth_dev *dev = cb_arg;
1295         struct priv *priv = dev->data->dev_private;
1296         uint32_t events;
1297
1298         priv_lock(priv);
1299         events = priv_dev_status_handler(priv);
1300         priv_unlock(priv);
1301         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1302                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL);
1303         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1304                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL);
1305 }
1306
1307 /**
1308  * Handle interrupts from the socket.
1309  *
1310  * @param cb_arg
1311  *   Callback argument.
1312  */
1313 static void
1314 mlx5_dev_handler_socket(void *cb_arg)
1315 {
1316         struct rte_eth_dev *dev = cb_arg;
1317         struct priv *priv = dev->data->dev_private;
1318
1319         priv_lock(priv);
1320         priv_socket_handle(priv);
1321         priv_unlock(priv);
1322 }
1323
1324 /**
1325  * Uninstall interrupt handler.
1326  *
1327  * @param priv
1328  *   Pointer to private structure.
1329  * @param dev
1330  *   Pointer to the rte_eth_dev structure.
1331  */
1332 void
1333 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1334 {
1335         if (dev->data->dev_conf.intr_conf.lsc ||
1336             dev->data->dev_conf.intr_conf.rmv)
1337                 rte_intr_callback_unregister(&priv->intr_handle,
1338                                              mlx5_dev_interrupt_handler, dev);
1339         if (priv->primary_socket)
1340                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1341                                              mlx5_dev_handler_socket, dev);
1342         if (priv->pending_alarm) {
1343                 priv->pending_alarm = 0;
1344                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1345         }
1346         priv->intr_handle.fd = 0;
1347         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1348         priv->intr_handle_socket.fd = 0;
1349         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1350 }
1351
1352 /**
1353  * Install interrupt handler.
1354  *
1355  * @param priv
1356  *   Pointer to private structure.
1357  * @param dev
1358  *   Pointer to the rte_eth_dev structure.
1359  */
1360 void
1361 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1362 {
1363         int rc, flags;
1364
1365         assert(priv->ctx->async_fd > 0);
1366         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1367         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1368         if (rc < 0) {
1369                 INFO("failed to change file descriptor async event queue");
1370                 dev->data->dev_conf.intr_conf.lsc = 0;
1371                 dev->data->dev_conf.intr_conf.rmv = 0;
1372         }
1373         if (dev->data->dev_conf.intr_conf.lsc ||
1374             dev->data->dev_conf.intr_conf.rmv) {
1375                 priv->intr_handle.fd = priv->ctx->async_fd;
1376                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1377                 rte_intr_callback_register(&priv->intr_handle,
1378                                            mlx5_dev_interrupt_handler, dev);
1379         }
1380
1381         rc = priv_socket_init(priv);
1382         if (!rc && priv->primary_socket) {
1383                 priv->intr_handle_socket.fd = priv->primary_socket;
1384                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1385                 rte_intr_callback_register(&priv->intr_handle_socket,
1386                                            mlx5_dev_handler_socket, dev);
1387         }
1388 }
1389
1390 /**
1391  * Change the link state (UP / DOWN).
1392  *
1393  * @param priv
1394  *   Pointer to private data structure.
1395  * @param up
1396  *   Nonzero for link up, otherwise link down.
1397  *
1398  * @return
1399  *   0 on success, errno value on failure.
1400  */
1401 static int
1402 priv_dev_set_link(struct priv *priv, int up)
1403 {
1404         return priv_set_flags(priv, ~IFF_UP, up ? IFF_UP : ~IFF_UP);
1405 }
1406
1407 /**
1408  * DPDK callback to bring the link DOWN.
1409  *
1410  * @param dev
1411  *   Pointer to Ethernet device structure.
1412  *
1413  * @return
1414  *   0 on success, errno value on failure.
1415  */
1416 int
1417 mlx5_set_link_down(struct rte_eth_dev *dev)
1418 {
1419         struct priv *priv = dev->data->dev_private;
1420         int err;
1421
1422         priv_lock(priv);
1423         err = priv_dev_set_link(priv, 0);
1424         priv_unlock(priv);
1425         return err;
1426 }
1427
1428 /**
1429  * DPDK callback to bring the link UP.
1430  *
1431  * @param dev
1432  *   Pointer to Ethernet device structure.
1433  *
1434  * @return
1435  *   0 on success, errno value on failure.
1436  */
1437 int
1438 mlx5_set_link_up(struct rte_eth_dev *dev)
1439 {
1440         struct priv *priv = dev->data->dev_private;
1441         int err;
1442
1443         priv_lock(priv);
1444         err = priv_dev_set_link(priv, 1);
1445         priv_unlock(priv);
1446         return err;
1447 }
1448
1449 /**
1450  * Configure the TX function to use.
1451  *
1452  * @param priv
1453  *   Pointer to private data structure.
1454  * @param dev
1455  *   Pointer to rte_eth_dev structure.
1456  *
1457  * @return
1458  *   Pointer to selected Tx burst function.
1459  */
1460 eth_tx_burst_t
1461 priv_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1462 {
1463         eth_tx_burst_t tx_pkt_burst = mlx5_tx_burst;
1464         struct mlx5_dev_config *config = &priv->config;
1465         uint64_t tx_offloads = dev->data->dev_conf.txmode.offloads;
1466         int tso = !!(tx_offloads & (DEV_TX_OFFLOAD_TCP_TSO |
1467                                     DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
1468                                     DEV_TX_OFFLOAD_GRE_TNL_TSO));
1469         int vlan_insert = !!(tx_offloads & DEV_TX_OFFLOAD_VLAN_INSERT);
1470
1471         assert(priv != NULL);
1472         /* Select appropriate TX function. */
1473         if (vlan_insert || tso)
1474                 return tx_pkt_burst;
1475         if (config->mps == MLX5_MPW_ENHANCED) {
1476                 if (priv_check_vec_tx_support(priv, dev) > 0) {
1477                         if (priv_check_raw_vec_tx_support(priv, dev) > 0)
1478                                 tx_pkt_burst = mlx5_tx_burst_raw_vec;
1479                         else
1480                                 tx_pkt_burst = mlx5_tx_burst_vec;
1481                         DEBUG("selected Enhanced MPW TX vectorized function");
1482                 } else {
1483                         tx_pkt_burst = mlx5_tx_burst_empw;
1484                         DEBUG("selected Enhanced MPW TX function");
1485                 }
1486         } else if (config->mps && (config->txq_inline > 0)) {
1487                 tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1488                 DEBUG("selected MPW inline TX function");
1489         } else if (config->mps) {
1490                 tx_pkt_burst = mlx5_tx_burst_mpw;
1491                 DEBUG("selected MPW TX function");
1492         }
1493         return tx_pkt_burst;
1494 }
1495
1496 /**
1497  * Configure the RX function to use.
1498  *
1499  * @param priv
1500  *   Pointer to private data structure.
1501  * @param dev
1502  *   Pointer to rte_eth_dev structure.
1503  *
1504  * @return
1505  *   Pointer to selected Rx burst function.
1506  */
1507 eth_rx_burst_t
1508 priv_select_rx_function(struct priv *priv, __rte_unused struct rte_eth_dev *dev)
1509 {
1510         eth_rx_burst_t rx_pkt_burst = mlx5_rx_burst;
1511
1512         assert(priv != NULL);
1513         if (priv_check_vec_rx_support(priv) > 0) {
1514                 rx_pkt_burst = mlx5_rx_burst_vec;
1515                 DEBUG("selected RX vectorized function");
1516         }
1517         return rx_pkt_burst;
1518 }
1519
1520 /**
1521  * Check if mlx5 device was removed.
1522  *
1523  * @param dev
1524  *   Pointer to Ethernet device structure.
1525  *
1526  * @return
1527  *   1 when device is removed, otherwise 0.
1528  */
1529 int
1530 mlx5_is_removed(struct rte_eth_dev *dev)
1531 {
1532         struct ibv_device_attr device_attr;
1533         struct priv *priv = dev->data->dev_private;
1534
1535         if (mlx5_glue->query_device(priv->ctx, &device_attr) == EIO)
1536                 return 1;
1537         return 0;
1538 }