drivers/net/mlx5/mlx5_ethdev.c

   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  * Check if running as a secondary process.
 123  *
 124  * @return
 125  *   Nonzero if running as a secondary process.
 126  */
 127 inline int
 128 mlx5_is_secondary(void)
 129 {
 130         return rte_eal_process_type() == RTE_PROC_SECONDARY;
 131 }
 132
 133 /**
 134  * Get interface name from private structure.
 135  *
 136  * @param[in] priv
 137  *   Pointer to private structure.
 138  * @param[out] ifname
 139  *   Interface name output buffer.
 140  *
 141  * @return
 142  *   0 on success, -1 on failure and errno is set.
 143  */
 144 int
 145 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
 146 {
 147         DIR *dir;
 148         struct dirent *dent;
 149         unsigned int dev_type = 0;
 150         unsigned int dev_port_prev = ~0u;
 151         char match[IF_NAMESIZE] = "";
 152
 153         {
 154                 MKSTR(path, "%s/device/net", priv->ibdev_path);
 155
 156                 dir = opendir(path);
 157                 if (dir == NULL)
 158                         return -1;
 159         }
 160         while ((dent = readdir(dir)) != NULL) {
 161                 char *name = dent->d_name;
 162                 FILE *file;
 163                 unsigned int dev_port;
 164                 int r;
 165
 166                 if ((name[0] == '.') &&
 167                     ((name[1] == '\0') ||
 168                      ((name[1] == '.') && (name[2] == '\0'))))
 169                         continue;
 170
 171                 MKSTR(path, "%s/device/net/%s/%s",
 172                       priv->ibdev_path, name,
 173                       (dev_type ? "dev_id" : "dev_port"));
 174
 175                 file = fopen(path, "rb");
 176                 if (file == NULL) {
 177                         if (errno != ENOENT)
 178                                 continue;
 179                         /*
 180                          * Switch to dev_id when dev_port does not exist as
 181                          * is the case with Linux kernel versions < 3.15.
 182                          */
 183 try_dev_id:
 184                         match[0] = '\0';
 185                         if (dev_type)
 186                                 break;
 187                         dev_type = 1;
 188                         dev_port_prev = ~0u;
 189                         rewinddir(dir);
 190                         continue;
 191                 }
 192                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 193                 fclose(file);
 194                 if (r != 1)
 195                         continue;
 196                 /*
 197                  * Switch to dev_id when dev_port returns the same value for
 198                  * all ports. May happen when using a MOFED release older than
 199                  * 3.0 with a Linux kernel >= 3.15.
 200                  */
 201                 if (dev_port == dev_port_prev)
 202                         goto try_dev_id;
 203                 dev_port_prev = dev_port;
 204                 if (dev_port == (priv->port - 1u))
 205                         snprintf(match, sizeof(match), "%s", name);
 206         }
 207         closedir(dir);
 208         if (match[0] == '\0')
 209                 return -1;
 210         strncpy(*ifname, match, sizeof(*ifname));
 211         return 0;
 212 }
 213
 214 /**
 215  * Check if the counter is located on ib counters file.
 216  *
 217  * @param[in] cntr
 218  *   Counter name.
 219  *
 220  * @return
 221  *   1 if counter is located on ib counters file , 0 otherwise.
 222  */
 223 int
 224 priv_is_ib_cntr(const char *cntr)
 225 {
 226         if (!strcmp(cntr, "out_of_buffer"))
 227                 return 1;
 228         return 0;
 229 }
 230
 231 /**
 232  * Read from sysfs entry.
 233  *
 234  * @param[in] priv
 235  *   Pointer to private structure.
 236  * @param[in] entry
 237  *   Entry name relative to sysfs path.
 238  * @param[out] buf
 239  *   Data output buffer.
 240  * @param size
 241  *   Buffer size.
 242  *
 243  * @return
 244  *   0 on success, -1 on failure and errno is set.
 245  */
 246 static int
 247 priv_sysfs_read(const struct priv *priv, const char *entry,
 248                 char *buf, size_t size)
 249 {
 250         char ifname[IF_NAMESIZE];
 251         FILE *file;
 252         int ret;
 253         int err;
 254
 255         if (priv_get_ifname(priv, &ifname))
 256                 return -1;
 257
 258         if (priv_is_ib_cntr(entry)) {
 259                 MKSTR(path, "%s/ports/1/hw_counters/%s",
 260                       priv->ibdev_path, entry);
 261                 file = fopen(path, "rb");
 262         } else {
 263                 MKSTR(path, "%s/device/net/%s/%s",
 264                       priv->ibdev_path, ifname, entry);
 265                 file = fopen(path, "rb");
 266         }
 267         if (file == NULL)
 268                 return -1;
 269         ret = fread(buf, 1, size, file);
 270         err = errno;
 271         if (((size_t)ret < size) && (ferror(file)))
 272                 ret = -1;
 273         else
 274                 ret = size;
 275         fclose(file);
 276         errno = err;
 277         return ret;
 278 }
 279
 280 /**
 281  * Write to sysfs entry.
 282  *
 283  * @param[in] priv
 284  *   Pointer to private structure.
 285  * @param[in] entry
 286  *   Entry name relative to sysfs path.
 287  * @param[in] buf
 288  *   Data buffer.
 289  * @param size
 290  *   Buffer size.
 291  *
 292  * @return
 293  *   0 on success, -1 on failure and errno is set.
 294  */
 295 static int
 296 priv_sysfs_write(const struct priv *priv, const char *entry,
 297                  char *buf, size_t size)
 298 {
 299         char ifname[IF_NAMESIZE];
 300         FILE *file;
 301         int ret;
 302         int err;
 303
 304         if (priv_get_ifname(priv, &ifname))
 305                 return -1;
 306
 307         MKSTR(path, "%s/device/net/%s/%s", priv->ibdev_path, ifname, entry);
 308
 309         file = fopen(path, "wb");
 310         if (file == NULL)
 311                 return -1;
 312         ret = fwrite(buf, 1, size, file);
 313         err = errno;
 314         if (((size_t)ret < size) || (ferror(file)))
 315                 ret = -1;
 316         else
 317                 ret = size;
 318         fclose(file);
 319         errno = err;
 320         return ret;
 321 }
 322
 323 /**
 324  * Get unsigned long sysfs property.
 325  *
 326  * @param priv
 327  *   Pointer to private structure.
 328  * @param[in] name
 329  *   Entry name relative to sysfs path.
 330  * @param[out] value
 331  *   Value output buffer.
 332  *
 333  * @return
 334  *   0 on success, -1 on failure and errno is set.
 335  */
 336 static int
 337 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
 338 {
 339         int ret;
 340         unsigned long value_ret;
 341         char value_str[32];
 342
 343         ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
 344         if (ret == -1) {
 345                 DEBUG("cannot read %s value from sysfs: %s",
 346                       name, strerror(errno));
 347                 return -1;
 348         }
 349         value_str[ret] = '\0';
 350         errno = 0;
 351         value_ret = strtoul(value_str, NULL, 0);
 352         if (errno) {
 353                 DEBUG("invalid %s value `%s': %s", name, value_str,
 354                       strerror(errno));
 355                 return -1;
 356         }
 357         *value = value_ret;
 358         return 0;
 359 }
 360
 361 /**
 362  * Set unsigned long sysfs property.
 363  *
 364  * @param priv
 365  *   Pointer to private structure.
 366  * @param[in] name
 367  *   Entry name relative to sysfs path.
 368  * @param value
 369  *   Value to set.
 370  *
 371  * @return
 372  *   0 on success, -1 on failure and errno is set.
 373  */
 374 static int
 375 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
 376 {
 377         int ret;
 378         MKSTR(value_str, "%lu", value);
 379
 380         ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
 381         if (ret == -1) {
 382                 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
 383                       name, value_str, value, strerror(errno));
 384                 return -1;
 385         }
 386         return 0;
 387 }
 388
 389 /**
 390  * Perform ifreq ioctl() on associated Ethernet device.
 391  *
 392  * @param[in] priv
 393  *   Pointer to private structure.
 394  * @param req
 395  *   Request number to pass to ioctl().
 396  * @param[out] ifr
 397  *   Interface request structure output buffer.
 398  *
 399  * @return
 400  *   0 on success, -1 on failure and errno is set.
 401  */
 402 int
 403 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
 404 {
 405         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 406         int ret = -1;
 407
 408         if (sock == -1)
 409                 return ret;
 410         if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
 411                 ret = ioctl(sock, req, ifr);
 412         close(sock);
 413         return ret;
 414 }
 415
 416 /**
 417  * Return the number of active VFs for the current device.
 418  *
 419  * @param[in] priv
 420  *   Pointer to private structure.
 421  * @param[out] num_vfs
 422  *   Number of active VFs.
 423  *
 424  * @return
 425  *   0 on success, -1 on failure and errno is set.
 426  */
 427 int
 428 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
 429 {
 430         /* The sysfs entry name depends on the operating system. */
 431         const char **name = (const char *[]){
 432                 "device/sriov_numvfs",
 433                 "device/mlx5_num_vfs",
 434                 NULL,
 435         };
 436         int ret;
 437
 438         do {
 439                 unsigned long ulong_num_vfs;
 440
 441                 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
 442                 if (!ret)
 443                         *num_vfs = ulong_num_vfs;
 444         } while (*(++name) && ret);
 445         return ret;
 446 }
 447
 448 /**
 449  * Get device MTU.
 450  *
 451  * @param priv
 452  *   Pointer to private structure.
 453  * @param[out] mtu
 454  *   MTU value output buffer.
 455  *
 456  * @return
 457  *   0 on success, -1 on failure and errno is set.
 458  */
 459 int
 460 priv_get_mtu(struct priv *priv, uint16_t *mtu)
 461 {
 462         unsigned long ulong_mtu;
 463
 464         if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
 465                 return -1;
 466         *mtu = ulong_mtu;
 467         return 0;
 468 }
 469
 470 /**
 471  * Read device counter from sysfs.
 472  *
 473  * @param priv
 474  *   Pointer to private structure.
 475  * @param name
 476  *   Counter name.
 477  * @param[out] cntr
 478  *   Counter output buffer.
 479  *
 480  * @return
 481  *   0 on success, -1 on failure and errno is set.
 482  */
 483 int
 484 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
 485 {
 486         unsigned long ulong_ctr;
 487
 488         if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
 489                 return -1;
 490         *cntr = ulong_ctr;
 491         return 0;
 492 }
 493
 494 /**
 495  * Set device MTU.
 496  *
 497  * @param priv
 498  *   Pointer to private structure.
 499  * @param mtu
 500  *   MTU value to set.
 501  *
 502  * @return
 503  *   0 on success, -1 on failure and errno is set.
 504  */
 505 static int
 506 priv_set_mtu(struct priv *priv, uint16_t mtu)
 507 {
 508         uint16_t new_mtu;
 509
 510         if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
 511             priv_get_mtu(priv, &new_mtu))
 512                 return -1;
 513         if (new_mtu == mtu)
 514                 return 0;
 515         errno = EINVAL;
 516         return -1;
 517 }
 518
 519 /**
 520  * Set device flags.
 521  *
 522  * @param priv
 523  *   Pointer to private structure.
 524  * @param keep
 525  *   Bitmask for flags that must remain untouched.
 526  * @param flags
 527  *   Bitmask for flags to modify.
 528  *
 529  * @return
 530  *   0 on success, -1 on failure and errno is set.
 531  */
 532 int
 533 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
 534 {
 535         unsigned long tmp;
 536
 537         if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
 538                 return -1;
 539         tmp &= keep;
 540         tmp |= (flags & (~keep));
 541         return priv_set_sysfs_ulong(priv, "flags", tmp);
 542 }
 543
 544 /**
 545  * Ethernet device configuration.
 546  *
 547  * Prepare the driver for a given number of TX and RX queues.
 548  *
 549  * @param dev
 550  *   Pointer to Ethernet device structure.
 551  *
 552  * @return
 553  *   0 on success, errno value on failure.
 554  */
 555 static int
 556 dev_configure(struct rte_eth_dev *dev)
 557 {
 558         struct priv *priv = dev->data->dev_private;
 559         unsigned int rxqs_n = dev->data->nb_rx_queues;
 560         unsigned int txqs_n = dev->data->nb_tx_queues;
 561         unsigned int i;
 562         unsigned int j;
 563         unsigned int reta_idx_n;
 564         const uint8_t use_app_rss_key =
 565                 !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len;
 566
 567         if (use_app_rss_key &&
 568             (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len !=
 569              rss_hash_default_key_len)) {
 570                 /* MLX5 RSS only support 40bytes key. */
 571                 return EINVAL;
 572         }
 573         priv->rss_conf.rss_key =
 574                 rte_realloc(priv->rss_conf.rss_key,
 575                             rss_hash_default_key_len, 0);
 576         if (!priv->rss_conf.rss_key) {
 577                 ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n);
 578                 return ENOMEM;
 579         }
 580         memcpy(priv->rss_conf.rss_key,
 581                use_app_rss_key ?
 582                dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key :
 583                rss_hash_default_key,
 584                rss_hash_default_key_len);
 585         priv->rss_conf.rss_key_len = rss_hash_default_key_len;
 586         priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 587         priv->rxqs = (void *)dev->data->rx_queues;
 588         priv->txqs = (void *)dev->data->tx_queues;
 589         if (txqs_n != priv->txqs_n) {
 590                 INFO("%p: TX queues number update: %u -> %u",
 591                      (void *)dev, priv->txqs_n, txqs_n);
 592                 priv->txqs_n = txqs_n;
 593         }
 594         if (rxqs_n > priv->ind_table_max_size) {
 595                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 596                 return EINVAL;
 597         }
 598         if (rxqs_n == priv->rxqs_n)
 599                 return 0;
 600         INFO("%p: RX queues number update: %u -> %u",
 601              (void *)dev, priv->rxqs_n, rxqs_n);
 602         priv->rxqs_n = rxqs_n;
 603         /* If the requested number of RX queues is not a power of two, use the
 604          * maximum indirection table size for better balancing.
 605          * The result is always rounded to the next power of two. */
 606         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 607                                      priv->ind_table_max_size :
 608                                      rxqs_n));
 609         if (priv_rss_reta_index_resize(priv, reta_idx_n))
 610                 return ENOMEM;
 611         /* When the number of RX queues is not a power of two, the remaining
 612          * table entries are padded with reused WQs and hashes are not spread
 613          * uniformly. */
 614         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 615                 (*priv->reta_idx)[i] = j;
 616                 if (++j == rxqs_n)
 617                         j = 0;
 618         }
 619         return 0;
 620 }
 621
 622 /**
 623  * DPDK callback for Ethernet device configuration.
 624  *
 625  * @param dev
 626  *   Pointer to Ethernet device structure.
 627  *
 628  * @return
 629  *   0 on success, negative errno value on failure.
 630  */
 631 int
 632 mlx5_dev_configure(struct rte_eth_dev *dev)
 633 {
 634         struct priv *priv = dev->data->dev_private;
 635         int ret;
 636
 637         if (mlx5_is_secondary())
 638                 return -E_RTE_SECONDARY;
 639
 640         priv_lock(priv);
 641         ret = dev_configure(dev);
 642         assert(ret >= 0);
 643         priv_unlock(priv);
 644         return -ret;
 645 }
 646
 647 /**
 648  * DPDK callback to get information about the device.
 649  *
 650  * @param dev
 651  *   Pointer to Ethernet device structure.
 652  * @param[out] info
 653  *   Info structure output buffer.
 654  */
 655 void
 656 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 657 {
 658         struct priv *priv = dev->data->dev_private;
 659         unsigned int max;
 660         char ifname[IF_NAMESIZE];
 661
 662         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 663
 664         priv_lock(priv);
 665         /* FIXME: we should ask the device for these values. */
 666         info->min_rx_bufsize = 32;
 667         info->max_rx_pktlen = 65536;
 668         /*
 669          * Since we need one CQ per QP, the limit is the minimum number
 670          * between the two values.
 671          */
 672         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 673                       priv->device_attr.orig_attr.max_qp);
 674         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 675         if (max >= 65535)
 676                 max = 65535;
 677         info->max_rx_queues = max;
 678         info->max_tx_queues = max;
 679         info->max_mac_addrs = RTE_DIM(priv->mac);
 680         info->rx_offload_capa =
 681                 (priv->hw_csum ?
 682                  (DEV_RX_OFFLOAD_IPV4_CKSUM |
 683                   DEV_RX_OFFLOAD_UDP_CKSUM |
 684                   DEV_RX_OFFLOAD_TCP_CKSUM) :
 685                  0) |
 686                 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0) |
 687                 DEV_RX_OFFLOAD_TIMESTAMP;
 688
 689         if (!priv->mps)
 690                 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
 691         if (priv->hw_csum)
 692                 info->tx_offload_capa |=
 693                         (DEV_TX_OFFLOAD_IPV4_CKSUM |
 694                          DEV_TX_OFFLOAD_UDP_CKSUM |
 695                          DEV_TX_OFFLOAD_TCP_CKSUM);
 696         if (priv->tso)
 697                 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
 698         if (priv->tunnel_en)
 699                 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
 700                                           DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
 701                                           DEV_TX_OFFLOAD_GRE_TNL_TSO);
 702         if (priv_get_ifname(priv, &ifname) == 0)
 703                 info->if_index = if_nametoindex(ifname);
 704         info->reta_size = priv->reta_idx_n ?
 705                 priv->reta_idx_n : priv->ind_table_max_size;
 706         info->hash_key_size = priv->rss_conf.rss_key_len;
 707         info->speed_capa = priv->link_speed_capa;
 708         priv_unlock(priv);
 709 }
 710
 711 const uint32_t *
 712 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 713 {
 714         static const uint32_t ptypes[] = {
 715                 /* refers to rxq_cq_to_pkt_type() */
 716                 RTE_PTYPE_L2_ETHER,
 717                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 718                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 719                 RTE_PTYPE_L4_NONFRAG,
 720                 RTE_PTYPE_L4_FRAG,
 721                 RTE_PTYPE_L4_TCP,
 722                 RTE_PTYPE_L4_UDP,
 723                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 724                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 725                 RTE_PTYPE_INNER_L4_NONFRAG,
 726                 RTE_PTYPE_INNER_L4_FRAG,
 727                 RTE_PTYPE_INNER_L4_TCP,
 728                 RTE_PTYPE_INNER_L4_UDP,
 729                 RTE_PTYPE_UNKNOWN
 730         };
 731
 732         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 733             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 734                 return ptypes;
 735         return NULL;
 736 }
 737
 738 /**
 739  * DPDK callback to retrieve physical link information.
 740  *
 741  * @param dev
 742  *   Pointer to Ethernet device structure.
 743  * @param wait_to_complete
 744  *   Wait for request completion (ignored).
 745  */
 746 static int
 747 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
 748 {
 749         struct priv *priv = dev->data->dev_private;
 750         struct ethtool_cmd edata = {
 751                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 752         };
 753         struct ifreq ifr;
 754         struct rte_eth_link dev_link;
 755         int link_speed = 0;
 756
 757         /* priv_lock() is not taken to allow concurrent calls. */
 758
 759         (void)wait_to_complete;
 760         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 761                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 762                 return -1;
 763         }
 764         memset(&dev_link, 0, sizeof(dev_link));
 765         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 766                                 (ifr.ifr_flags & IFF_RUNNING));
 767         ifr.ifr_data = (void *)&edata;
 768         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 769                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 770                      strerror(errno));
 771                 return -1;
 772         }
 773         link_speed = ethtool_cmd_speed(&edata);
 774         if (link_speed == -1)
 775                 dev_link.link_speed = 0;
 776         else
 777                 dev_link.link_speed = link_speed;
 778         priv->link_speed_capa = 0;
 779         if (edata.supported & SUPPORTED_Autoneg)
 780                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 781         if (edata.supported & (SUPPORTED_1000baseT_Full |
 782                                SUPPORTED_1000baseKX_Full))
 783                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 784         if (edata.supported & SUPPORTED_10000baseKR_Full)
 785                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 786         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 787                                SUPPORTED_40000baseCR4_Full |
 788                                SUPPORTED_40000baseSR4_Full |
 789                                SUPPORTED_40000baseLR4_Full))
 790                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 791         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 792                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 793         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 794                         ETH_LINK_SPEED_FIXED);
 795         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 796                 /* Link status changed. */
 797                 dev->data->dev_link = dev_link;
 798                 return 0;
 799         }
 800         /* Link status is still the same. */
 801         return -1;
 802 }
 803
 804 /**
 805  * Retrieve physical link information (unlocked version using new ioctl).
 806  *
 807  * @param dev
 808  *   Pointer to Ethernet device structure.
 809  * @param wait_to_complete
 810  *   Wait for request completion (ignored).
 811  */
 812 static int
 813 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
 814 {
 815         struct priv *priv = dev->data->dev_private;
 816         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 817         struct ifreq ifr;
 818         struct rte_eth_link dev_link;
 819         uint64_t sc;
 820
 821         (void)wait_to_complete;
 822         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 823                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 824                 return -1;
 825         }
 826         memset(&dev_link, 0, sizeof(dev_link));
 827         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 828                                 (ifr.ifr_flags & IFF_RUNNING));
 829         ifr.ifr_data = (void *)&gcmd;
 830         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 831                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 832                       strerror(errno));
 833                 return -1;
 834         }
 835         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 836
 837         alignas(struct ethtool_link_settings)
 838         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 839                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 840         struct ethtool_link_settings *ecmd = (void *)data;
 841
 842         *ecmd = gcmd;
 843         ifr.ifr_data = (void *)ecmd;
 844         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 845                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 846                       strerror(errno));
 847                 return -1;
 848         }
 849         dev_link.link_speed = ecmd->speed;
 850         sc = ecmd->link_mode_masks[0] |
 851                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 852         priv->link_speed_capa = 0;
 853         if (sc & MLX5_BITSHIFT(ETHTOOL_LINK_MODE_Autoneg_BIT))
 854                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 855         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseT_Full_BIT) |
 856                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_1000baseKX_Full_BIT)))
 857                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 858         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT) |
 859                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) |
 860                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_10000baseR_FEC_BIT)))
 861                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 862         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT) |
 863                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT)))
 864                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 865         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT) |
 866                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT) |
 867                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT) |
 868                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT)))
 869                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 870         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT) |
 871                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT) |
 872                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT) |
 873                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT)))
 874                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 875         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseCR_Full_BIT) |
 876                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseKR_Full_BIT) |
 877                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_25000baseSR_Full_BIT)))
 878                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 879         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT) |
 880                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT)))
 881                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 882         if (sc & (MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT) |
 883                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT) |
 884                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT) |
 885                   MLX5_BITSHIFT(ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT)))
 886                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 887         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 888                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 889         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 890                                   ETH_LINK_SPEED_FIXED);
 891         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 892                 /* Link status changed. */
 893                 dev->data->dev_link = dev_link;
 894                 return 0;
 895         }
 896         /* Link status is still the same. */
 897         return -1;
 898 }
 899
 900 /**
 901  * DPDK callback to retrieve physical link information.
 902  *
 903  * @param dev
 904  *   Pointer to Ethernet device structure.
 905  * @param wait_to_complete
 906  *   Wait for request completion (ignored).
 907  */
 908 int
 909 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 910 {
 911         struct utsname utsname;
 912         int ver[3];
 913
 914         if (uname(&utsname) == -1 ||
 915             sscanf(utsname.release, "%d.%d.%d",
 916                    &ver[0], &ver[1], &ver[2]) != 3 ||
 917             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 918                 return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
 919         return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
 920 }
 921
 922 /**
 923  * DPDK callback to change the MTU.
 924  *
 925  * @param dev
 926  *   Pointer to Ethernet device structure.
 927  * @param in_mtu
 928  *   New MTU.
 929  *
 930  * @return
 931  *   0 on success, negative errno value on failure.
 932  */
 933 int
 934 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 935 {
 936         struct priv *priv = dev->data->dev_private;
 937         uint16_t kern_mtu;
 938         int ret = 0;
 939
 940         if (mlx5_is_secondary())
 941                 return -E_RTE_SECONDARY;
 942
 943         priv_lock(priv);
 944         ret = priv_get_mtu(priv, &kern_mtu);
 945         if (ret)
 946                 goto out;
 947         /* Set kernel interface MTU first. */
 948         ret = priv_set_mtu(priv, mtu);
 949         if (ret)
 950                 goto out;
 951         ret = priv_get_mtu(priv, &kern_mtu);
 952         if (ret)
 953                 goto out;
 954         if (kern_mtu == mtu) {
 955                 priv->mtu = mtu;
 956                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
 957         }
 958         priv_unlock(priv);
 959         return 0;
 960 out:
 961         ret = errno;
 962         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
 963              strerror(ret));
 964         priv_unlock(priv);
 965         assert(ret >= 0);
 966         return -ret;
 967 }
 968
 969 /**
 970  * DPDK callback to get flow control status.
 971  *
 972  * @param dev
 973  *   Pointer to Ethernet device structure.
 974  * @param[out] fc_conf
 975  *   Flow control output buffer.
 976  *
 977  * @return
 978  *   0 on success, negative errno value on failure.
 979  */
 980 int
 981 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 982 {
 983         struct priv *priv = dev->data->dev_private;
 984         struct ifreq ifr;
 985         struct ethtool_pauseparam ethpause = {
 986                 .cmd = ETHTOOL_GPAUSEPARAM
 987         };
 988         int ret;
 989
 990         if (mlx5_is_secondary())
 991                 return -E_RTE_SECONDARY;
 992
 993         ifr.ifr_data = (void *)&ethpause;
 994         priv_lock(priv);
 995         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 996                 ret = errno;
 997                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
 998                      " failed: %s",
 999                      strerror(ret));
1000                 goto out;
1001         }
1002
1003         fc_conf->autoneg = ethpause.autoneg;
1004         if (ethpause.rx_pause && ethpause.tx_pause)
1005                 fc_conf->mode = RTE_FC_FULL;
1006         else if (ethpause.rx_pause)
1007                 fc_conf->mode = RTE_FC_RX_PAUSE;
1008         else if (ethpause.tx_pause)
1009                 fc_conf->mode = RTE_FC_TX_PAUSE;
1010         else
1011                 fc_conf->mode = RTE_FC_NONE;
1012         ret = 0;
1013
1014 out:
1015         priv_unlock(priv);
1016         assert(ret >= 0);
1017         return -ret;
1018 }
1019
1020 /**
1021  * DPDK callback to modify flow control parameters.
1022  *
1023  * @param dev
1024  *   Pointer to Ethernet device structure.
1025  * @param[in] fc_conf
1026  *   Flow control parameters.
1027  *
1028  * @return
1029  *   0 on success, negative errno value on failure.
1030  */
1031 int
1032 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1033 {
1034         struct priv *priv = dev->data->dev_private;
1035         struct ifreq ifr;
1036         struct ethtool_pauseparam ethpause = {
1037                 .cmd = ETHTOOL_SPAUSEPARAM
1038         };
1039         int ret;
1040
1041         if (mlx5_is_secondary())
1042                 return -E_RTE_SECONDARY;
1043
1044         ifr.ifr_data = (void *)&ethpause;
1045         ethpause.autoneg = fc_conf->autoneg;
1046         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1047             (fc_conf->mode & RTE_FC_RX_PAUSE))
1048                 ethpause.rx_pause = 1;
1049         else
1050                 ethpause.rx_pause = 0;
1051
1052         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1053             (fc_conf->mode & RTE_FC_TX_PAUSE))
1054                 ethpause.tx_pause = 1;
1055         else
1056                 ethpause.tx_pause = 0;
1057
1058         priv_lock(priv);
1059         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1060                 ret = errno;
1061                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1062                      " failed: %s",
1063                      strerror(ret));
1064                 goto out;
1065         }
1066         ret = 0;
1067
1068 out:
1069         priv_unlock(priv);
1070         assert(ret >= 0);
1071         return -ret;
1072 }
1073
1074 /**
1075  * Get PCI information from struct ibv_device.
1076  *
1077  * @param device
1078  *   Pointer to Ethernet device structure.
1079  * @param[out] pci_addr
1080  *   PCI bus address output buffer.
1081  *
1082  * @return
1083  *   0 on success, -1 on failure and errno is set.
1084  */
1085 int
1086 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1087                             struct rte_pci_addr *pci_addr)
1088 {
1089         FILE *file;
1090         char line[32];
1091         MKSTR(path, "%s/device/uevent", device->ibdev_path);
1092
1093         file = fopen(path, "rb");
1094         if (file == NULL)
1095                 return -1;
1096         while (fgets(line, sizeof(line), file) == line) {
1097                 size_t len = strlen(line);
1098                 int ret;
1099
1100                 /* Truncate long lines. */
1101                 if (len == (sizeof(line) - 1))
1102                         while (line[(len - 1)] != '\n') {
1103                                 ret = fgetc(file);
1104                                 if (ret == EOF)
1105                                         break;
1106                                 line[(len - 1)] = ret;
1107                         }
1108                 /* Extract information. */
1109                 if (sscanf(line,
1110                            "PCI_SLOT_NAME="
1111                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1112                            &pci_addr->domain,
1113                            &pci_addr->bus,
1114                            &pci_addr->devid,
1115                            &pci_addr->function) == 4) {
1116                         ret = 0;
1117                         break;
1118                 }
1119         }
1120         fclose(file);
1121         return 0;
1122 }
1123
1124 /**
1125  * Update the link status.
1126  *
1127  * @param priv
1128  *   Pointer to private structure.
1129  *
1130  * @return
1131  *   Zero if the callback process can be called immediately.
1132  */
1133 static int
1134 priv_link_status_update(struct priv *priv)
1135 {
1136         struct rte_eth_link *link = &priv->dev->data->dev_link;
1137
1138         mlx5_link_update(priv->dev, 0);
1139         if (((link->link_speed == 0) && link->link_status) ||
1140                 ((link->link_speed != 0) && !link->link_status)) {
1141                 /*
1142                  * Inconsistent status. Event likely occurred before the
1143                  * kernel netdevice exposes the new status.
1144                  */
1145                 if (!priv->pending_alarm) {
1146                         priv->pending_alarm = 1;
1147                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1148                                           mlx5_dev_link_status_handler,
1149                                           priv->dev);
1150                 }
1151                 return 1;
1152         } else if (unlikely(priv->pending_alarm)) {
1153                 /* Link interrupt occurred while alarm is already scheduled. */
1154                 priv->pending_alarm = 0;
1155                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
1156         }
1157         return 0;
1158 }
1159
1160 /**
1161  * Device status handler.
1162  *
1163  * @param priv
1164  *   Pointer to private structure.
1165  * @param events
1166  *   Pointer to event flags holder.
1167  *
1168  * @return
1169  *   Events bitmap of callback process which can be called immediately.
1170  */
1171 static uint32_t
1172 priv_dev_status_handler(struct priv *priv)
1173 {
1174         struct ibv_async_event event;
1175         uint32_t ret = 0;
1176
1177         /* Read all message and acknowledge them. */
1178         for (;;) {
1179                 if (ibv_get_async_event(priv->ctx, &event))
1180                         break;
1181                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1182                         event.event_type == IBV_EVENT_PORT_ERR) &&
1183                         (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1184                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1185                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1186                         priv->dev->data->dev_conf.intr_conf.rmv == 1)
1187                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1188                 else
1189                         DEBUG("event type %d on port %d not handled",
1190                               event.event_type, event.element.port_num);
1191                 ibv_ack_async_event(&event);
1192         }
1193         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1194                 if (priv_link_status_update(priv))
1195                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1196         return ret;
1197 }
1198
1199 /**
1200  * Handle delayed link status event.
1201  *
1202  * @param arg
1203  *   Registered argument.
1204  */
1205 void
1206 mlx5_dev_link_status_handler(void *arg)
1207 {
1208         struct rte_eth_dev *dev = arg;
1209         struct priv *priv = dev->data->dev_private;
1210         int ret;
1211
1212         priv_lock(priv);
1213         assert(priv->pending_alarm == 1);
1214         priv->pending_alarm = 0;
1215         ret = priv_link_status_update(priv);
1216         priv_unlock(priv);
1217         if (!ret)
1218                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
1219                                               NULL);
1220 }
1221
1222 /**
1223  * Handle interrupts from the NIC.
1224  *
1225  * @param[in] intr_handle
1226  *   Interrupt handler.
1227  * @param cb_arg
1228  *   Callback argument.
1229  */
1230 void
1231 mlx5_dev_interrupt_handler(void *cb_arg)
1232 {
1233         struct rte_eth_dev *dev = cb_arg;
1234         struct priv *priv = dev->data->dev_private;
1235         uint32_t events;
1236
1237         priv_lock(priv);
1238         events = priv_dev_status_handler(priv);
1239         priv_unlock(priv);
1240         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1241                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
1242                                               NULL);
1243         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1244                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL,
1245                                               NULL);
1246 }
1247
1248 /**
1249  * Handle interrupts from the socket.
1250  *
1251  * @param cb_arg
1252  *   Callback argument.
1253  */
1254 static void
1255 mlx5_dev_handler_socket(void *cb_arg)
1256 {
1257         struct rte_eth_dev *dev = cb_arg;
1258         struct priv *priv = dev->data->dev_private;
1259
1260         priv_lock(priv);
1261         priv_socket_handle(priv);
1262         priv_unlock(priv);
1263 }
1264
1265 /**
1266  * Uninstall interrupt handler.
1267  *
1268  * @param priv
1269  *   Pointer to private structure.
1270  * @param dev
1271  *   Pointer to the rte_eth_dev structure.
1272  */
1273 void
1274 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1275 {
1276         if (dev->data->dev_conf.intr_conf.lsc ||
1277             dev->data->dev_conf.intr_conf.rmv)
1278                 rte_intr_callback_unregister(&priv->intr_handle,
1279                                              mlx5_dev_interrupt_handler, dev);
1280         if (priv->primary_socket)
1281                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1282                                              mlx5_dev_handler_socket, dev);
1283         if (priv->pending_alarm)
1284                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1285         priv->pending_alarm = 0;
1286         priv->intr_handle.fd = 0;
1287         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1288         priv->intr_handle_socket.fd = 0;
1289         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1290 }
1291
1292 /**
1293  * Install interrupt handler.
1294  *
1295  * @param priv
1296  *   Pointer to private structure.
1297  * @param dev
1298  *   Pointer to the rte_eth_dev structure.
1299  */
1300 void
1301 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1302 {
1303         int rc, flags;
1304
1305         assert(!mlx5_is_secondary());
1306         assert(priv->ctx->async_fd > 0);
1307         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1308         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1309         if (rc < 0) {
1310                 INFO("failed to change file descriptor async event queue");
1311                 dev->data->dev_conf.intr_conf.lsc = 0;
1312                 dev->data->dev_conf.intr_conf.rmv = 0;
1313         }
1314         if (dev->data->dev_conf.intr_conf.lsc ||
1315             dev->data->dev_conf.intr_conf.rmv) {
1316                 priv->intr_handle.fd = priv->ctx->async_fd;
1317                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1318                 rte_intr_callback_register(&priv->intr_handle,
1319                                            mlx5_dev_interrupt_handler, dev);
1320         }
1321
1322         rc = priv_socket_init(priv);
1323         if (!rc && priv->primary_socket) {
1324                 priv->intr_handle_socket.fd = priv->primary_socket;
1325                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1326                 rte_intr_callback_register(&priv->intr_handle_socket,
1327                                            mlx5_dev_handler_socket, dev);
1328         }
1329 }
1330
1331 /**
1332  * Change the link state (UP / DOWN).
1333  *
1334  * @param priv
1335  *   Pointer to private data structure.
1336  * @param dev
1337  *   Pointer to rte_eth_dev structure.
1338  * @param up
1339  *   Nonzero for link up, otherwise link down.
1340  *
1341  * @return
1342  *   0 on success, errno value on failure.
1343  */
1344 static int
1345 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up)
1346 {
1347         int err;
1348
1349         if (up) {
1350                 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1351                 if (err)
1352                         return err;
1353                 priv_dev_select_tx_function(priv, dev);
1354                 priv_dev_select_rx_function(priv, dev);
1355         } else {
1356                 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1357                 if (err)
1358                         return err;
1359                 dev->rx_pkt_burst = removed_rx_burst;
1360                 dev->tx_pkt_burst = removed_tx_burst;
1361         }
1362         return 0;
1363 }
1364
1365 /**
1366  * DPDK callback to bring the link DOWN.
1367  *
1368  * @param dev
1369  *   Pointer to Ethernet device structure.
1370  *
1371  * @return
1372  *   0 on success, errno value on failure.
1373  */
1374 int
1375 mlx5_set_link_down(struct rte_eth_dev *dev)
1376 {
1377         struct priv *priv = dev->data->dev_private;
1378         int err;
1379
1380         priv_lock(priv);
1381         err = priv_dev_set_link(priv, dev, 0);
1382         priv_unlock(priv);
1383         return err;
1384 }
1385
1386 /**
1387  * DPDK callback to bring the link UP.
1388  *
1389  * @param dev
1390  *   Pointer to Ethernet device structure.
1391  *
1392  * @return
1393  *   0 on success, errno value on failure.
1394  */
1395 int
1396 mlx5_set_link_up(struct rte_eth_dev *dev)
1397 {
1398         struct priv *priv = dev->data->dev_private;
1399         int err;
1400
1401         priv_lock(priv);
1402         err = priv_dev_set_link(priv, dev, 1);
1403         priv_unlock(priv);
1404         return err;
1405 }
1406
1407 /**
1408  * Configure the TX function to use.
1409  *
1410  * @param priv
1411  *   Pointer to private data structure.
1412  * @param dev
1413  *   Pointer to rte_eth_dev structure.
1414  */
1415 void
1416 priv_dev_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1417 {
1418         assert(priv != NULL);
1419         assert(dev != NULL);
1420         dev->tx_pkt_burst = mlx5_tx_burst;
1421         /* Select appropriate TX function. */
1422         if (priv->mps == MLX5_MPW_ENHANCED) {
1423                 if (priv_check_vec_tx_support(priv) > 0) {
1424                         if (priv_check_raw_vec_tx_support(priv) > 0)
1425                                 dev->tx_pkt_burst = mlx5_tx_burst_raw_vec;
1426                         else
1427                                 dev->tx_pkt_burst = mlx5_tx_burst_vec;
1428                         DEBUG("selected Enhanced MPW TX vectorized function");
1429                 } else {
1430                         dev->tx_pkt_burst = mlx5_tx_burst_empw;
1431                         DEBUG("selected Enhanced MPW TX function");
1432                 }
1433         } else if (priv->mps && priv->txq_inline) {
1434                 dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1435                 DEBUG("selected MPW inline TX function");
1436         } else if (priv->mps) {
1437                 dev->tx_pkt_burst = mlx5_tx_burst_mpw;
1438                 DEBUG("selected MPW TX function");
1439         }
1440 }
1441
1442 /**
1443  * Configure the RX function to use.
1444  *
1445  * @param priv
1446  *   Pointer to private data structure.
1447  * @param dev
1448  *   Pointer to rte_eth_dev structure.
1449  */
1450 void
1451 priv_dev_select_rx_function(struct priv *priv, struct rte_eth_dev *dev)
1452 {
1453         assert(priv != NULL);
1454         assert(dev != NULL);
1455         if (priv_check_vec_rx_support(priv) > 0) {
1456                 dev->rx_pkt_burst = mlx5_rx_burst_vec;
1457                 DEBUG("selected RX vectorized function");
1458         } else {
1459                 dev->rx_pkt_burst = mlx5_rx_burst;
1460         }
1461 }