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_mbuf.h>
  60 #include <rte_common.h>
  61 #include <rte_interrupts.h>
  62 #include <rte_alarm.h>
  63 #include <rte_malloc.h>
  64
  65 #include "mlx5.h"
  66 #include "mlx5_rxtx.h"
  67 #include "mlx5_utils.h"
  68
  69 /* Add defines in case the running kernel is not the same as user headers. */
  70 #ifndef ETHTOOL_GLINKSETTINGS
  71 struct ethtool_link_settings {
  72         uint32_t cmd;
  73         uint32_t speed;
  74         uint8_t duplex;
  75         uint8_t port;
  76         uint8_t phy_address;
  77         uint8_t autoneg;
  78         uint8_t mdio_support;
  79         uint8_t eth_to_mdix;
  80         uint8_t eth_tp_mdix_ctrl;
  81         int8_t link_mode_masks_nwords;
  82         uint32_t reserved[8];
  83         uint32_t link_mode_masks[];
  84 };
  85
  86 #define ETHTOOL_GLINKSETTINGS 0x0000004c
  87 #define ETHTOOL_LINK_MODE_1000baseT_Full_BIT 5
  88 #define ETHTOOL_LINK_MODE_Autoneg_BIT 6
  89 #define ETHTOOL_LINK_MODE_1000baseKX_Full_BIT 17
  90 #define ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT 18
  91 #define ETHTOOL_LINK_MODE_10000baseKR_Full_BIT 19
  92 #define ETHTOOL_LINK_MODE_10000baseR_FEC_BIT 20
  93 #define ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT 21
  94 #define ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT 22
  95 #define ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT 23
  96 #define ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT 24
  97 #define ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT 25
  98 #define ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT 26
  99 #define ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT 27
 100 #define ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT 28
 101 #define ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT 29
 102 #define ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT 30
 103 #endif
 104 #ifndef HAVE_ETHTOOL_LINK_MODE_25G
 105 #define ETHTOOL_LINK_MODE_25000baseCR_Full_BIT 31
 106 #define ETHTOOL_LINK_MODE_25000baseKR_Full_BIT 32
 107 #define ETHTOOL_LINK_MODE_25000baseSR_Full_BIT 33
 108 #endif
 109 #ifndef HAVE_ETHTOOL_LINK_MODE_50G
 110 #define ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT 34
 111 #define ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT 35
 112 #endif
 113 #ifndef HAVE_ETHTOOL_LINK_MODE_100G
 114 #define ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT 36
 115 #define ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT 37
 116 #define ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT 38
 117 #define ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT 39
 118 #endif
 119
 120 /**
 121  * Return private structure associated with an Ethernet device.
 122  *
 123  * @param dev
 124  *   Pointer to Ethernet device structure.
 125  *
 126  * @return
 127  *   Pointer to private structure.
 128  */
 129 struct priv *
 130 mlx5_get_priv(struct rte_eth_dev *dev)
 131 {
 132         return dev->data->dev_private;
 133 }
 134
 135 /**
 136  * Check if running as a secondary process.
 137  *
 138  * @return
 139  *   Nonzero if running as a secondary process.
 140  */
 141 inline int
 142 mlx5_is_secondary(void)
 143 {
 144         return rte_eal_process_type() == RTE_PROC_SECONDARY;
 145 }
 146
 147 /**
 148  * Get interface name from private structure.
 149  *
 150  * @param[in] priv
 151  *   Pointer to private structure.
 152  * @param[out] ifname
 153  *   Interface name output buffer.
 154  *
 155  * @return
 156  *   0 on success, -1 on failure and errno is set.
 157  */
 158 int
 159 priv_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE])
 160 {
 161         DIR *dir;
 162         struct dirent *dent;
 163         unsigned int dev_type = 0;
 164         unsigned int dev_port_prev = ~0u;
 165         char match[IF_NAMESIZE] = "";
 166
 167         {
 168                 MKSTR(path, "%s/device/net", priv->ctx->device->ibdev_path);
 169
 170                 dir = opendir(path);
 171                 if (dir == NULL)
 172                         return -1;
 173         }
 174         while ((dent = readdir(dir)) != NULL) {
 175                 char *name = dent->d_name;
 176                 FILE *file;
 177                 unsigned int dev_port;
 178                 int r;
 179
 180                 if ((name[0] == '.') &&
 181                     ((name[1] == '\0') ||
 182                      ((name[1] == '.') && (name[2] == '\0'))))
 183                         continue;
 184
 185                 MKSTR(path, "%s/device/net/%s/%s",
 186                       priv->ctx->device->ibdev_path, name,
 187                       (dev_type ? "dev_id" : "dev_port"));
 188
 189                 file = fopen(path, "rb");
 190                 if (file == NULL) {
 191                         if (errno != ENOENT)
 192                                 continue;
 193                         /*
 194                          * Switch to dev_id when dev_port does not exist as
 195                          * is the case with Linux kernel versions < 3.15.
 196                          */
 197 try_dev_id:
 198                         match[0] = '\0';
 199                         if (dev_type)
 200                                 break;
 201                         dev_type = 1;
 202                         dev_port_prev = ~0u;
 203                         rewinddir(dir);
 204                         continue;
 205                 }
 206                 r = fscanf(file, (dev_type ? "%x" : "%u"), &dev_port);
 207                 fclose(file);
 208                 if (r != 1)
 209                         continue;
 210                 /*
 211                  * Switch to dev_id when dev_port returns the same value for
 212                  * all ports. May happen when using a MOFED release older than
 213                  * 3.0 with a Linux kernel >= 3.15.
 214                  */
 215                 if (dev_port == dev_port_prev)
 216                         goto try_dev_id;
 217                 dev_port_prev = dev_port;
 218                 if (dev_port == (priv->port - 1u))
 219                         snprintf(match, sizeof(match), "%s", name);
 220         }
 221         closedir(dir);
 222         if (match[0] == '\0')
 223                 return -1;
 224         strncpy(*ifname, match, sizeof(*ifname));
 225         return 0;
 226 }
 227
 228 /**
 229  * Check if the counter is located on ib counters file.
 230  *
 231  * @param[in] cntr
 232  *   Counter name.
 233  *
 234  * @return
 235  *   1 if counter is located on ib counters file , 0 otherwise.
 236  */
 237 int
 238 priv_is_ib_cntr(const char *cntr)
 239 {
 240         if (!strcmp(cntr, "out_of_buffer"))
 241                 return 1;
 242         return 0;
 243 }
 244
 245 /**
 246  * Read from sysfs entry.
 247  *
 248  * @param[in] priv
 249  *   Pointer to private structure.
 250  * @param[in] entry
 251  *   Entry name relative to sysfs path.
 252  * @param[out] buf
 253  *   Data output buffer.
 254  * @param size
 255  *   Buffer size.
 256  *
 257  * @return
 258  *   0 on success, -1 on failure and errno is set.
 259  */
 260 static int
 261 priv_sysfs_read(const struct priv *priv, const char *entry,
 262                 char *buf, size_t size)
 263 {
 264         char ifname[IF_NAMESIZE];
 265         FILE *file;
 266         int ret;
 267         int err;
 268
 269         if (priv_get_ifname(priv, &ifname))
 270                 return -1;
 271
 272         if (priv_is_ib_cntr(entry)) {
 273                 MKSTR(path, "%s/ports/1/hw_counters/%s",
 274                       priv->ctx->device->ibdev_path, entry);
 275                 file = fopen(path, "rb");
 276         } else {
 277                 MKSTR(path, "%s/device/net/%s/%s",
 278                       priv->ctx->device->ibdev_path, ifname, entry);
 279                 file = fopen(path, "rb");
 280         }
 281         if (file == NULL)
 282                 return -1;
 283         ret = fread(buf, 1, size, file);
 284         err = errno;
 285         if (((size_t)ret < size) && (ferror(file)))
 286                 ret = -1;
 287         else
 288                 ret = size;
 289         fclose(file);
 290         errno = err;
 291         return ret;
 292 }
 293
 294 /**
 295  * Write to sysfs entry.
 296  *
 297  * @param[in] priv
 298  *   Pointer to private structure.
 299  * @param[in] entry
 300  *   Entry name relative to sysfs path.
 301  * @param[in] buf
 302  *   Data buffer.
 303  * @param size
 304  *   Buffer size.
 305  *
 306  * @return
 307  *   0 on success, -1 on failure and errno is set.
 308  */
 309 static int
 310 priv_sysfs_write(const struct priv *priv, const char *entry,
 311                  char *buf, size_t size)
 312 {
 313         char ifname[IF_NAMESIZE];
 314         FILE *file;
 315         int ret;
 316         int err;
 317
 318         if (priv_get_ifname(priv, &ifname))
 319                 return -1;
 320
 321         MKSTR(path, "%s/device/net/%s/%s", priv->ctx->device->ibdev_path,
 322               ifname, entry);
 323
 324         file = fopen(path, "wb");
 325         if (file == NULL)
 326                 return -1;
 327         ret = fwrite(buf, 1, size, file);
 328         err = errno;
 329         if (((size_t)ret < size) || (ferror(file)))
 330                 ret = -1;
 331         else
 332                 ret = size;
 333         fclose(file);
 334         errno = err;
 335         return ret;
 336 }
 337
 338 /**
 339  * Get unsigned long sysfs property.
 340  *
 341  * @param priv
 342  *   Pointer to private structure.
 343  * @param[in] name
 344  *   Entry name relative to sysfs path.
 345  * @param[out] value
 346  *   Value output buffer.
 347  *
 348  * @return
 349  *   0 on success, -1 on failure and errno is set.
 350  */
 351 static int
 352 priv_get_sysfs_ulong(struct priv *priv, const char *name, unsigned long *value)
 353 {
 354         int ret;
 355         unsigned long value_ret;
 356         char value_str[32];
 357
 358         ret = priv_sysfs_read(priv, name, value_str, (sizeof(value_str) - 1));
 359         if (ret == -1) {
 360                 DEBUG("cannot read %s value from sysfs: %s",
 361                       name, strerror(errno));
 362                 return -1;
 363         }
 364         value_str[ret] = '\0';
 365         errno = 0;
 366         value_ret = strtoul(value_str, NULL, 0);
 367         if (errno) {
 368                 DEBUG("invalid %s value `%s': %s", name, value_str,
 369                       strerror(errno));
 370                 return -1;
 371         }
 372         *value = value_ret;
 373         return 0;
 374 }
 375
 376 /**
 377  * Set unsigned long sysfs property.
 378  *
 379  * @param priv
 380  *   Pointer to private structure.
 381  * @param[in] name
 382  *   Entry name relative to sysfs path.
 383  * @param value
 384  *   Value to set.
 385  *
 386  * @return
 387  *   0 on success, -1 on failure and errno is set.
 388  */
 389 static int
 390 priv_set_sysfs_ulong(struct priv *priv, const char *name, unsigned long value)
 391 {
 392         int ret;
 393         MKSTR(value_str, "%lu", value);
 394
 395         ret = priv_sysfs_write(priv, name, value_str, (sizeof(value_str) - 1));
 396         if (ret == -1) {
 397                 DEBUG("cannot write %s `%s' (%lu) to sysfs: %s",
 398                       name, value_str, value, strerror(errno));
 399                 return -1;
 400         }
 401         return 0;
 402 }
 403
 404 /**
 405  * Perform ifreq ioctl() on associated Ethernet device.
 406  *
 407  * @param[in] priv
 408  *   Pointer to private structure.
 409  * @param req
 410  *   Request number to pass to ioctl().
 411  * @param[out] ifr
 412  *   Interface request structure output buffer.
 413  *
 414  * @return
 415  *   0 on success, -1 on failure and errno is set.
 416  */
 417 int
 418 priv_ifreq(const struct priv *priv, int req, struct ifreq *ifr)
 419 {
 420         int sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
 421         int ret = -1;
 422
 423         if (sock == -1)
 424                 return ret;
 425         if (priv_get_ifname(priv, &ifr->ifr_name) == 0)
 426                 ret = ioctl(sock, req, ifr);
 427         close(sock);
 428         return ret;
 429 }
 430
 431 /**
 432  * Return the number of active VFs for the current device.
 433  *
 434  * @param[in] priv
 435  *   Pointer to private structure.
 436  * @param[out] num_vfs
 437  *   Number of active VFs.
 438  *
 439  * @return
 440  *   0 on success, -1 on failure and errno is set.
 441  */
 442 int
 443 priv_get_num_vfs(struct priv *priv, uint16_t *num_vfs)
 444 {
 445         /* The sysfs entry name depends on the operating system. */
 446         const char **name = (const char *[]){
 447                 "device/sriov_numvfs",
 448                 "device/mlx5_num_vfs",
 449                 NULL,
 450         };
 451         int ret;
 452
 453         do {
 454                 unsigned long ulong_num_vfs;
 455
 456                 ret = priv_get_sysfs_ulong(priv, *name, &ulong_num_vfs);
 457                 if (!ret)
 458                         *num_vfs = ulong_num_vfs;
 459         } while (*(++name) && ret);
 460         return ret;
 461 }
 462
 463 /**
 464  * Get device MTU.
 465  *
 466  * @param priv
 467  *   Pointer to private structure.
 468  * @param[out] mtu
 469  *   MTU value output buffer.
 470  *
 471  * @return
 472  *   0 on success, -1 on failure and errno is set.
 473  */
 474 int
 475 priv_get_mtu(struct priv *priv, uint16_t *mtu)
 476 {
 477         unsigned long ulong_mtu;
 478
 479         if (priv_get_sysfs_ulong(priv, "mtu", &ulong_mtu) == -1)
 480                 return -1;
 481         *mtu = ulong_mtu;
 482         return 0;
 483 }
 484
 485 /**
 486  * Read device counter from sysfs.
 487  *
 488  * @param priv
 489  *   Pointer to private structure.
 490  * @param name
 491  *   Counter name.
 492  * @param[out] cntr
 493  *   Counter output buffer.
 494  *
 495  * @return
 496  *   0 on success, -1 on failure and errno is set.
 497  */
 498 int
 499 priv_get_cntr_sysfs(struct priv *priv, const char *name, uint64_t *cntr)
 500 {
 501         unsigned long ulong_ctr;
 502
 503         if (priv_get_sysfs_ulong(priv, name, &ulong_ctr) == -1)
 504                 return -1;
 505         *cntr = ulong_ctr;
 506         return 0;
 507 }
 508
 509 /**
 510  * Set device MTU.
 511  *
 512  * @param priv
 513  *   Pointer to private structure.
 514  * @param mtu
 515  *   MTU value to set.
 516  *
 517  * @return
 518  *   0 on success, -1 on failure and errno is set.
 519  */
 520 static int
 521 priv_set_mtu(struct priv *priv, uint16_t mtu)
 522 {
 523         uint16_t new_mtu;
 524
 525         if (priv_set_sysfs_ulong(priv, "mtu", mtu) ||
 526             priv_get_mtu(priv, &new_mtu))
 527                 return -1;
 528         if (new_mtu == mtu)
 529                 return 0;
 530         errno = EINVAL;
 531         return -1;
 532 }
 533
 534 /**
 535  * Set device flags.
 536  *
 537  * @param priv
 538  *   Pointer to private structure.
 539  * @param keep
 540  *   Bitmask for flags that must remain untouched.
 541  * @param flags
 542  *   Bitmask for flags to modify.
 543  *
 544  * @return
 545  *   0 on success, -1 on failure and errno is set.
 546  */
 547 int
 548 priv_set_flags(struct priv *priv, unsigned int keep, unsigned int flags)
 549 {
 550         unsigned long tmp;
 551
 552         if (priv_get_sysfs_ulong(priv, "flags", &tmp) == -1)
 553                 return -1;
 554         tmp &= keep;
 555         tmp |= (flags & (~keep));
 556         return priv_set_sysfs_ulong(priv, "flags", tmp);
 557 }
 558
 559 /**
 560  * Ethernet device configuration.
 561  *
 562  * Prepare the driver for a given number of TX and RX queues.
 563  *
 564  * @param dev
 565  *   Pointer to Ethernet device structure.
 566  *
 567  * @return
 568  *   0 on success, errno value on failure.
 569  */
 570 static int
 571 dev_configure(struct rte_eth_dev *dev)
 572 {
 573         struct priv *priv = dev->data->dev_private;
 574         unsigned int rxqs_n = dev->data->nb_rx_queues;
 575         unsigned int txqs_n = dev->data->nb_tx_queues;
 576         unsigned int i;
 577         unsigned int j;
 578         unsigned int reta_idx_n;
 579
 580         priv->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf;
 581         priv->rxqs = (void *)dev->data->rx_queues;
 582         priv->txqs = (void *)dev->data->tx_queues;
 583         if (txqs_n != priv->txqs_n) {
 584                 INFO("%p: TX queues number update: %u -> %u",
 585                      (void *)dev, priv->txqs_n, txqs_n);
 586                 priv->txqs_n = txqs_n;
 587         }
 588         if (rxqs_n > priv->ind_table_max_size) {
 589                 ERROR("cannot handle this many RX queues (%u)", rxqs_n);
 590                 return EINVAL;
 591         }
 592         if (rxqs_n == priv->rxqs_n)
 593                 return 0;
 594         INFO("%p: RX queues number update: %u -> %u",
 595              (void *)dev, priv->rxqs_n, rxqs_n);
 596         priv->rxqs_n = rxqs_n;
 597         /* If the requested number of RX queues is not a power of two, use the
 598          * maximum indirection table size for better balancing.
 599          * The result is always rounded to the next power of two. */
 600         reta_idx_n = (1 << log2above((rxqs_n & (rxqs_n - 1)) ?
 601                                      priv->ind_table_max_size :
 602                                      rxqs_n));
 603         if (priv_rss_reta_index_resize(priv, reta_idx_n))
 604                 return ENOMEM;
 605         /* When the number of RX queues is not a power of two, the remaining
 606          * table entries are padded with reused WQs and hashes are not spread
 607          * uniformly. */
 608         for (i = 0, j = 0; (i != reta_idx_n); ++i) {
 609                 (*priv->reta_idx)[i] = j;
 610                 if (++j == rxqs_n)
 611                         j = 0;
 612         }
 613         return 0;
 614 }
 615
 616 /**
 617  * DPDK callback for Ethernet device configuration.
 618  *
 619  * @param dev
 620  *   Pointer to Ethernet device structure.
 621  *
 622  * @return
 623  *   0 on success, negative errno value on failure.
 624  */
 625 int
 626 mlx5_dev_configure(struct rte_eth_dev *dev)
 627 {
 628         struct priv *priv = dev->data->dev_private;
 629         int ret;
 630
 631         if (mlx5_is_secondary())
 632                 return -E_RTE_SECONDARY;
 633
 634         priv_lock(priv);
 635         ret = dev_configure(dev);
 636         assert(ret >= 0);
 637         priv_unlock(priv);
 638         return -ret;
 639 }
 640
 641 /**
 642  * DPDK callback to get information about the device.
 643  *
 644  * @param dev
 645  *   Pointer to Ethernet device structure.
 646  * @param[out] info
 647  *   Info structure output buffer.
 648  */
 649 void
 650 mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info)
 651 {
 652         struct priv *priv = mlx5_get_priv(dev);
 653         unsigned int max;
 654         char ifname[IF_NAMESIZE];
 655
 656         info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
 657
 658         priv_lock(priv);
 659         /* FIXME: we should ask the device for these values. */
 660         info->min_rx_bufsize = 32;
 661         info->max_rx_pktlen = 65536;
 662         /*
 663          * Since we need one CQ per QP, the limit is the minimum number
 664          * between the two values.
 665          */
 666         max = RTE_MIN(priv->device_attr.orig_attr.max_cq,
 667                       priv->device_attr.orig_attr.max_qp);
 668         /* If max >= 65535 then max = 0, max_rx_queues is uint16_t. */
 669         if (max >= 65535)
 670                 max = 65535;
 671         info->max_rx_queues = max;
 672         info->max_tx_queues = max;
 673         info->max_mac_addrs = RTE_DIM(priv->mac);
 674         info->rx_offload_capa =
 675                 (priv->hw_csum ?
 676                  (DEV_RX_OFFLOAD_IPV4_CKSUM |
 677                   DEV_RX_OFFLOAD_UDP_CKSUM |
 678                   DEV_RX_OFFLOAD_TCP_CKSUM) :
 679                  0) |
 680                 (priv->hw_vlan_strip ? DEV_RX_OFFLOAD_VLAN_STRIP : 0);
 681         if (!priv->mps)
 682                 info->tx_offload_capa = DEV_TX_OFFLOAD_VLAN_INSERT;
 683         if (priv->hw_csum)
 684                 info->tx_offload_capa |=
 685                         (DEV_TX_OFFLOAD_IPV4_CKSUM |
 686                          DEV_TX_OFFLOAD_UDP_CKSUM |
 687                          DEV_TX_OFFLOAD_TCP_CKSUM);
 688         if (priv->tso)
 689                 info->tx_offload_capa |= DEV_TX_OFFLOAD_TCP_TSO;
 690         if (priv->tunnel_en)
 691                 info->tx_offload_capa |= (DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM |
 692                                           DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
 693                                           DEV_TX_OFFLOAD_GRE_TNL_TSO);
 694         if (priv_get_ifname(priv, &ifname) == 0)
 695                 info->if_index = if_nametoindex(ifname);
 696         info->reta_size = priv->reta_idx_n ?
 697                 priv->reta_idx_n : priv->ind_table_max_size;
 698         info->hash_key_size = ((*priv->rss_conf) ?
 699                                (*priv->rss_conf)[0]->rss_key_len :
 700                                0);
 701         info->speed_capa = priv->link_speed_capa;
 702         priv_unlock(priv);
 703 }
 704
 705 const uint32_t *
 706 mlx5_dev_supported_ptypes_get(struct rte_eth_dev *dev)
 707 {
 708         static const uint32_t ptypes[] = {
 709                 /* refers to rxq_cq_to_pkt_type() */
 710                 RTE_PTYPE_L2_ETHER,
 711                 RTE_PTYPE_L3_IPV4_EXT_UNKNOWN,
 712                 RTE_PTYPE_L3_IPV6_EXT_UNKNOWN,
 713                 RTE_PTYPE_L4_NONFRAG,
 714                 RTE_PTYPE_L4_FRAG,
 715                 RTE_PTYPE_L4_TCP,
 716                 RTE_PTYPE_L4_UDP,
 717                 RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN,
 718                 RTE_PTYPE_INNER_L3_IPV6_EXT_UNKNOWN,
 719                 RTE_PTYPE_INNER_L4_NONFRAG,
 720                 RTE_PTYPE_INNER_L4_FRAG,
 721                 RTE_PTYPE_INNER_L4_TCP,
 722                 RTE_PTYPE_INNER_L4_UDP,
 723                 RTE_PTYPE_UNKNOWN
 724         };
 725
 726         if (dev->rx_pkt_burst == mlx5_rx_burst ||
 727             dev->rx_pkt_burst == mlx5_rx_burst_vec)
 728                 return ptypes;
 729         return NULL;
 730 }
 731
 732 /**
 733  * DPDK callback to retrieve physical link information.
 734  *
 735  * @param dev
 736  *   Pointer to Ethernet device structure.
 737  * @param wait_to_complete
 738  *   Wait for request completion (ignored).
 739  */
 740 static int
 741 mlx5_link_update_unlocked_gset(struct rte_eth_dev *dev, int wait_to_complete)
 742 {
 743         struct priv *priv = mlx5_get_priv(dev);
 744         struct ethtool_cmd edata = {
 745                 .cmd = ETHTOOL_GSET /* Deprecated since Linux v4.5. */
 746         };
 747         struct ifreq ifr;
 748         struct rte_eth_link dev_link;
 749         int link_speed = 0;
 750
 751         /* priv_lock() is not taken to allow concurrent calls. */
 752
 753         (void)wait_to_complete;
 754         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 755                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 756                 return -1;
 757         }
 758         memset(&dev_link, 0, sizeof(dev_link));
 759         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 760                                 (ifr.ifr_flags & IFF_RUNNING));
 761         ifr.ifr_data = (void *)&edata;
 762         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 763                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GSET) failed: %s",
 764                      strerror(errno));
 765                 return -1;
 766         }
 767         link_speed = ethtool_cmd_speed(&edata);
 768         if (link_speed == -1)
 769                 dev_link.link_speed = 0;
 770         else
 771                 dev_link.link_speed = link_speed;
 772         priv->link_speed_capa = 0;
 773         if (edata.supported & SUPPORTED_Autoneg)
 774                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 775         if (edata.supported & (SUPPORTED_1000baseT_Full |
 776                                SUPPORTED_1000baseKX_Full))
 777                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 778         if (edata.supported & SUPPORTED_10000baseKR_Full)
 779                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 780         if (edata.supported & (SUPPORTED_40000baseKR4_Full |
 781                                SUPPORTED_40000baseCR4_Full |
 782                                SUPPORTED_40000baseSR4_Full |
 783                                SUPPORTED_40000baseLR4_Full))
 784                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 785         dev_link.link_duplex = ((edata.duplex == DUPLEX_HALF) ?
 786                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 787         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 788                         ETH_LINK_SPEED_FIXED);
 789         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 790                 /* Link status changed. */
 791                 dev->data->dev_link = dev_link;
 792                 return 0;
 793         }
 794         /* Link status is still the same. */
 795         return -1;
 796 }
 797
 798 /**
 799  * Retrieve physical link information (unlocked version using new ioctl).
 800  *
 801  * @param dev
 802  *   Pointer to Ethernet device structure.
 803  * @param wait_to_complete
 804  *   Wait for request completion (ignored).
 805  */
 806 static int
 807 mlx5_link_update_unlocked_gs(struct rte_eth_dev *dev, int wait_to_complete)
 808 {
 809         struct priv *priv = mlx5_get_priv(dev);
 810         struct ethtool_link_settings gcmd = { .cmd = ETHTOOL_GLINKSETTINGS };
 811         struct ifreq ifr;
 812         struct rte_eth_link dev_link;
 813         uint64_t sc;
 814
 815         (void)wait_to_complete;
 816         if (priv_ifreq(priv, SIOCGIFFLAGS, &ifr)) {
 817                 WARN("ioctl(SIOCGIFFLAGS) failed: %s", strerror(errno));
 818                 return -1;
 819         }
 820         memset(&dev_link, 0, sizeof(dev_link));
 821         dev_link.link_status = ((ifr.ifr_flags & IFF_UP) &&
 822                                 (ifr.ifr_flags & IFF_RUNNING));
 823         ifr.ifr_data = (void *)&gcmd;
 824         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 825                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 826                       strerror(errno));
 827                 return -1;
 828         }
 829         gcmd.link_mode_masks_nwords = -gcmd.link_mode_masks_nwords;
 830
 831         alignas(struct ethtool_link_settings)
 832         uint8_t data[offsetof(struct ethtool_link_settings, link_mode_masks) +
 833                      sizeof(uint32_t) * gcmd.link_mode_masks_nwords * 3];
 834         struct ethtool_link_settings *ecmd = (void *)data;
 835
 836         *ecmd = gcmd;
 837         ifr.ifr_data = (void *)ecmd;
 838         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 839                 DEBUG("ioctl(SIOCETHTOOL, ETHTOOL_GLINKSETTINGS) failed: %s",
 840                       strerror(errno));
 841                 return -1;
 842         }
 843         dev_link.link_speed = ecmd->speed;
 844         sc = ecmd->link_mode_masks[0] |
 845                 ((uint64_t)ecmd->link_mode_masks[1] << 32);
 846         priv->link_speed_capa = 0;
 847         if (sc & ETHTOOL_LINK_MODE_Autoneg_BIT)
 848                 priv->link_speed_capa |= ETH_LINK_SPEED_AUTONEG;
 849         if (sc & (ETHTOOL_LINK_MODE_1000baseT_Full_BIT |
 850                   ETHTOOL_LINK_MODE_1000baseKX_Full_BIT))
 851                 priv->link_speed_capa |= ETH_LINK_SPEED_1G;
 852         if (sc & (ETHTOOL_LINK_MODE_10000baseKX4_Full_BIT |
 853                   ETHTOOL_LINK_MODE_10000baseKR_Full_BIT |
 854                   ETHTOOL_LINK_MODE_10000baseR_FEC_BIT))
 855                 priv->link_speed_capa |= ETH_LINK_SPEED_10G;
 856         if (sc & (ETHTOOL_LINK_MODE_20000baseMLD2_Full_BIT |
 857                   ETHTOOL_LINK_MODE_20000baseKR2_Full_BIT))
 858                 priv->link_speed_capa |= ETH_LINK_SPEED_20G;
 859         if (sc & (ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT |
 860                   ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT |
 861                   ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT |
 862                   ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT))
 863                 priv->link_speed_capa |= ETH_LINK_SPEED_40G;
 864         if (sc & (ETHTOOL_LINK_MODE_56000baseKR4_Full_BIT |
 865                   ETHTOOL_LINK_MODE_56000baseCR4_Full_BIT |
 866                   ETHTOOL_LINK_MODE_56000baseSR4_Full_BIT |
 867                   ETHTOOL_LINK_MODE_56000baseLR4_Full_BIT))
 868                 priv->link_speed_capa |= ETH_LINK_SPEED_56G;
 869         if (sc & (ETHTOOL_LINK_MODE_25000baseCR_Full_BIT |
 870                   ETHTOOL_LINK_MODE_25000baseKR_Full_BIT |
 871                   ETHTOOL_LINK_MODE_25000baseSR_Full_BIT))
 872                 priv->link_speed_capa |= ETH_LINK_SPEED_25G;
 873         if (sc & (ETHTOOL_LINK_MODE_50000baseCR2_Full_BIT |
 874                   ETHTOOL_LINK_MODE_50000baseKR2_Full_BIT))
 875                 priv->link_speed_capa |= ETH_LINK_SPEED_50G;
 876         if (sc & (ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT |
 877                   ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT |
 878                   ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT |
 879                   ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT))
 880                 priv->link_speed_capa |= ETH_LINK_SPEED_100G;
 881         dev_link.link_duplex = ((ecmd->duplex == DUPLEX_HALF) ?
 882                                 ETH_LINK_HALF_DUPLEX : ETH_LINK_FULL_DUPLEX);
 883         dev_link.link_autoneg = !(dev->data->dev_conf.link_speeds &
 884                                   ETH_LINK_SPEED_FIXED);
 885         if (memcmp(&dev_link, &dev->data->dev_link, sizeof(dev_link))) {
 886                 /* Link status changed. */
 887                 dev->data->dev_link = dev_link;
 888                 return 0;
 889         }
 890         /* Link status is still the same. */
 891         return -1;
 892 }
 893
 894 /**
 895  * DPDK callback to retrieve physical link information.
 896  *
 897  * @param dev
 898  *   Pointer to Ethernet device structure.
 899  * @param wait_to_complete
 900  *   Wait for request completion (ignored).
 901  */
 902 int
 903 mlx5_link_update(struct rte_eth_dev *dev, int wait_to_complete)
 904 {
 905         struct utsname utsname;
 906         int ver[3];
 907
 908         if (uname(&utsname) == -1 ||
 909             sscanf(utsname.release, "%d.%d.%d",
 910                    &ver[0], &ver[1], &ver[2]) != 3 ||
 911             KERNEL_VERSION(ver[0], ver[1], ver[2]) < KERNEL_VERSION(4, 9, 0))
 912                 return mlx5_link_update_unlocked_gset(dev, wait_to_complete);
 913         return mlx5_link_update_unlocked_gs(dev, wait_to_complete);
 914 }
 915
 916 /**
 917  * DPDK callback to change the MTU.
 918  *
 919  * @param dev
 920  *   Pointer to Ethernet device structure.
 921  * @param in_mtu
 922  *   New MTU.
 923  *
 924  * @return
 925  *   0 on success, negative errno value on failure.
 926  */
 927 int
 928 mlx5_dev_set_mtu(struct rte_eth_dev *dev, uint16_t mtu)
 929 {
 930         struct priv *priv = dev->data->dev_private;
 931         uint16_t kern_mtu;
 932         int ret = 0;
 933
 934         if (mlx5_is_secondary())
 935                 return -E_RTE_SECONDARY;
 936
 937         priv_lock(priv);
 938         ret = priv_get_mtu(priv, &kern_mtu);
 939         if (ret)
 940                 goto out;
 941         /* Set kernel interface MTU first. */
 942         ret = priv_set_mtu(priv, mtu);
 943         if (ret)
 944                 goto out;
 945         ret = priv_get_mtu(priv, &kern_mtu);
 946         if (ret)
 947                 goto out;
 948         if (kern_mtu == mtu) {
 949                 priv->mtu = mtu;
 950                 DEBUG("adapter port %u MTU set to %u", priv->port, mtu);
 951         }
 952         priv_unlock(priv);
 953         return 0;
 954 out:
 955         ret = errno;
 956         WARN("cannot set port %u MTU to %u: %s", priv->port, mtu,
 957              strerror(ret));
 958         priv_unlock(priv);
 959         assert(ret >= 0);
 960         return -ret;
 961 }
 962
 963 /**
 964  * DPDK callback to get flow control status.
 965  *
 966  * @param dev
 967  *   Pointer to Ethernet device structure.
 968  * @param[out] fc_conf
 969  *   Flow control output buffer.
 970  *
 971  * @return
 972  *   0 on success, negative errno value on failure.
 973  */
 974 int
 975 mlx5_dev_get_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
 976 {
 977         struct priv *priv = dev->data->dev_private;
 978         struct ifreq ifr;
 979         struct ethtool_pauseparam ethpause = {
 980                 .cmd = ETHTOOL_GPAUSEPARAM
 981         };
 982         int ret;
 983
 984         if (mlx5_is_secondary())
 985                 return -E_RTE_SECONDARY;
 986
 987         ifr.ifr_data = (void *)&ethpause;
 988         priv_lock(priv);
 989         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
 990                 ret = errno;
 991                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_GPAUSEPARAM)"
 992                      " failed: %s",
 993                      strerror(ret));
 994                 goto out;
 995         }
 996
 997         fc_conf->autoneg = ethpause.autoneg;
 998         if (ethpause.rx_pause && ethpause.tx_pause)
 999                 fc_conf->mode = RTE_FC_FULL;
1000         else if (ethpause.rx_pause)
1001                 fc_conf->mode = RTE_FC_RX_PAUSE;
1002         else if (ethpause.tx_pause)
1003                 fc_conf->mode = RTE_FC_TX_PAUSE;
1004         else
1005                 fc_conf->mode = RTE_FC_NONE;
1006         ret = 0;
1007
1008 out:
1009         priv_unlock(priv);
1010         assert(ret >= 0);
1011         return -ret;
1012 }
1013
1014 /**
1015  * DPDK callback to modify flow control parameters.
1016  *
1017  * @param dev
1018  *   Pointer to Ethernet device structure.
1019  * @param[in] fc_conf
1020  *   Flow control parameters.
1021  *
1022  * @return
1023  *   0 on success, negative errno value on failure.
1024  */
1025 int
1026 mlx5_dev_set_flow_ctrl(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
1027 {
1028         struct priv *priv = dev->data->dev_private;
1029         struct ifreq ifr;
1030         struct ethtool_pauseparam ethpause = {
1031                 .cmd = ETHTOOL_SPAUSEPARAM
1032         };
1033         int ret;
1034
1035         if (mlx5_is_secondary())
1036                 return -E_RTE_SECONDARY;
1037
1038         ifr.ifr_data = (void *)&ethpause;
1039         ethpause.autoneg = fc_conf->autoneg;
1040         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1041             (fc_conf->mode & RTE_FC_RX_PAUSE))
1042                 ethpause.rx_pause = 1;
1043         else
1044                 ethpause.rx_pause = 0;
1045
1046         if (((fc_conf->mode & RTE_FC_FULL) == RTE_FC_FULL) ||
1047             (fc_conf->mode & RTE_FC_TX_PAUSE))
1048                 ethpause.tx_pause = 1;
1049         else
1050                 ethpause.tx_pause = 0;
1051
1052         priv_lock(priv);
1053         if (priv_ifreq(priv, SIOCETHTOOL, &ifr)) {
1054                 ret = errno;
1055                 WARN("ioctl(SIOCETHTOOL, ETHTOOL_SPAUSEPARAM)"
1056                      " failed: %s",
1057                      strerror(ret));
1058                 goto out;
1059         }
1060         ret = 0;
1061
1062 out:
1063         priv_unlock(priv);
1064         assert(ret >= 0);
1065         return -ret;
1066 }
1067
1068 /**
1069  * Get PCI information from struct ibv_device.
1070  *
1071  * @param device
1072  *   Pointer to Ethernet device structure.
1073  * @param[out] pci_addr
1074  *   PCI bus address output buffer.
1075  *
1076  * @return
1077  *   0 on success, -1 on failure and errno is set.
1078  */
1079 int
1080 mlx5_ibv_device_to_pci_addr(const struct ibv_device *device,
1081                             struct rte_pci_addr *pci_addr)
1082 {
1083         FILE *file;
1084         char line[32];
1085         MKSTR(path, "%s/device/uevent", device->ibdev_path);
1086
1087         file = fopen(path, "rb");
1088         if (file == NULL)
1089                 return -1;
1090         while (fgets(line, sizeof(line), file) == line) {
1091                 size_t len = strlen(line);
1092                 int ret;
1093
1094                 /* Truncate long lines. */
1095                 if (len == (sizeof(line) - 1))
1096                         while (line[(len - 1)] != '\n') {
1097                                 ret = fgetc(file);
1098                                 if (ret == EOF)
1099                                         break;
1100                                 line[(len - 1)] = ret;
1101                         }
1102                 /* Extract information. */
1103                 if (sscanf(line,
1104                            "PCI_SLOT_NAME="
1105                            "%" SCNx32 ":%" SCNx8 ":%" SCNx8 ".%" SCNx8 "\n",
1106                            &pci_addr->domain,
1107                            &pci_addr->bus,
1108                            &pci_addr->devid,
1109                            &pci_addr->function) == 4) {
1110                         ret = 0;
1111                         break;
1112                 }
1113         }
1114         fclose(file);
1115         return 0;
1116 }
1117
1118 /**
1119  * Update the link status.
1120  *
1121  * @param priv
1122  *   Pointer to private structure.
1123  *
1124  * @return
1125  *   Zero if the callback process can be called immediately.
1126  */
1127 static int
1128 priv_link_status_update(struct priv *priv)
1129 {
1130         struct rte_eth_link *link = &priv->dev->data->dev_link;
1131
1132         mlx5_link_update(priv->dev, 0);
1133         if (((link->link_speed == 0) && link->link_status) ||
1134                 ((link->link_speed != 0) && !link->link_status)) {
1135                 /*
1136                  * Inconsistent status. Event likely occurred before the
1137                  * kernel netdevice exposes the new status.
1138                  */
1139                 if (!priv->pending_alarm) {
1140                         priv->pending_alarm = 1;
1141                         rte_eal_alarm_set(MLX5_ALARM_TIMEOUT_US,
1142                                           mlx5_dev_link_status_handler,
1143                                           priv->dev);
1144                 }
1145                 return 1;
1146         } else if (unlikely(priv->pending_alarm)) {
1147                 /* Link interrupt occurred while alarm is already scheduled. */
1148                 priv->pending_alarm = 0;
1149                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, priv->dev);
1150         }
1151         return 0;
1152 }
1153
1154 /**
1155  * Device status handler.
1156  *
1157  * @param priv
1158  *   Pointer to private structure.
1159  * @param events
1160  *   Pointer to event flags holder.
1161  *
1162  * @return
1163  *   Events bitmap of callback process which can be called immediately.
1164  */
1165 static uint32_t
1166 priv_dev_status_handler(struct priv *priv)
1167 {
1168         struct ibv_async_event event;
1169         uint32_t ret = 0;
1170
1171         /* Read all message and acknowledge them. */
1172         for (;;) {
1173                 if (ibv_get_async_event(priv->ctx, &event))
1174                         break;
1175                 if ((event.event_type == IBV_EVENT_PORT_ACTIVE ||
1176                         event.event_type == IBV_EVENT_PORT_ERR) &&
1177                         (priv->dev->data->dev_conf.intr_conf.lsc == 1))
1178                         ret |= (1 << RTE_ETH_EVENT_INTR_LSC);
1179                 else if (event.event_type == IBV_EVENT_DEVICE_FATAL &&
1180                         priv->dev->data->dev_conf.intr_conf.rmv == 1)
1181                         ret |= (1 << RTE_ETH_EVENT_INTR_RMV);
1182                 else
1183                         DEBUG("event type %d on port %d not handled",
1184                               event.event_type, event.element.port_num);
1185                 ibv_ack_async_event(&event);
1186         }
1187         if (ret & (1 << RTE_ETH_EVENT_INTR_LSC))
1188                 if (priv_link_status_update(priv))
1189                         ret &= ~(1 << RTE_ETH_EVENT_INTR_LSC);
1190         return ret;
1191 }
1192
1193 /**
1194  * Handle delayed link status event.
1195  *
1196  * @param arg
1197  *   Registered argument.
1198  */
1199 void
1200 mlx5_dev_link_status_handler(void *arg)
1201 {
1202         struct rte_eth_dev *dev = arg;
1203         struct priv *priv = dev->data->dev_private;
1204         int ret;
1205
1206         priv_lock(priv);
1207         assert(priv->pending_alarm == 1);
1208         priv->pending_alarm = 0;
1209         ret = priv_link_status_update(priv);
1210         priv_unlock(priv);
1211         if (!ret)
1212                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
1213                                               NULL);
1214 }
1215
1216 /**
1217  * Handle interrupts from the NIC.
1218  *
1219  * @param[in] intr_handle
1220  *   Interrupt handler.
1221  * @param cb_arg
1222  *   Callback argument.
1223  */
1224 void
1225 mlx5_dev_interrupt_handler(void *cb_arg)
1226 {
1227         struct rte_eth_dev *dev = cb_arg;
1228         struct priv *priv = dev->data->dev_private;
1229         uint32_t events;
1230
1231         priv_lock(priv);
1232         events = priv_dev_status_handler(priv);
1233         priv_unlock(priv);
1234         if (events & (1 << RTE_ETH_EVENT_INTR_LSC))
1235                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_LSC, NULL,
1236                                               NULL);
1237         if (events & (1 << RTE_ETH_EVENT_INTR_RMV))
1238                 _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RMV, NULL,
1239                                               NULL);
1240 }
1241
1242 /**
1243  * Handle interrupts from the socket.
1244  *
1245  * @param cb_arg
1246  *   Callback argument.
1247  */
1248 static void
1249 mlx5_dev_handler_socket(void *cb_arg)
1250 {
1251         struct rte_eth_dev *dev = cb_arg;
1252         struct priv *priv = dev->data->dev_private;
1253
1254         priv_lock(priv);
1255         priv_socket_handle(priv);
1256         priv_unlock(priv);
1257 }
1258
1259 /**
1260  * Uninstall interrupt handler.
1261  *
1262  * @param priv
1263  *   Pointer to private structure.
1264  * @param dev
1265  *   Pointer to the rte_eth_dev structure.
1266  */
1267 void
1268 priv_dev_interrupt_handler_uninstall(struct priv *priv, struct rte_eth_dev *dev)
1269 {
1270         if (dev->data->dev_conf.intr_conf.lsc ||
1271             dev->data->dev_conf.intr_conf.rmv)
1272                 rte_intr_callback_unregister(&priv->intr_handle,
1273                                              mlx5_dev_interrupt_handler, dev);
1274         if (priv->primary_socket)
1275                 rte_intr_callback_unregister(&priv->intr_handle_socket,
1276                                              mlx5_dev_handler_socket, dev);
1277         if (priv->pending_alarm)
1278                 rte_eal_alarm_cancel(mlx5_dev_link_status_handler, dev);
1279         priv->pending_alarm = 0;
1280         priv->intr_handle.fd = 0;
1281         priv->intr_handle.type = RTE_INTR_HANDLE_UNKNOWN;
1282         priv->intr_handle_socket.fd = 0;
1283         priv->intr_handle_socket.type = RTE_INTR_HANDLE_UNKNOWN;
1284 }
1285
1286 /**
1287  * Install interrupt handler.
1288  *
1289  * @param priv
1290  *   Pointer to private structure.
1291  * @param dev
1292  *   Pointer to the rte_eth_dev structure.
1293  */
1294 void
1295 priv_dev_interrupt_handler_install(struct priv *priv, struct rte_eth_dev *dev)
1296 {
1297         int rc, flags;
1298
1299         assert(!mlx5_is_secondary());
1300         assert(priv->ctx->async_fd > 0);
1301         flags = fcntl(priv->ctx->async_fd, F_GETFL);
1302         rc = fcntl(priv->ctx->async_fd, F_SETFL, flags | O_NONBLOCK);
1303         if (rc < 0) {
1304                 INFO("failed to change file descriptor async event queue");
1305                 dev->data->dev_conf.intr_conf.lsc = 0;
1306                 dev->data->dev_conf.intr_conf.rmv = 0;
1307         }
1308         if (dev->data->dev_conf.intr_conf.lsc ||
1309             dev->data->dev_conf.intr_conf.rmv) {
1310                 priv->intr_handle.fd = priv->ctx->async_fd;
1311                 priv->intr_handle.type = RTE_INTR_HANDLE_EXT;
1312                 rte_intr_callback_register(&priv->intr_handle,
1313                                            mlx5_dev_interrupt_handler, dev);
1314         }
1315
1316         rc = priv_socket_init(priv);
1317         if (!rc && priv->primary_socket) {
1318                 priv->intr_handle_socket.fd = priv->primary_socket;
1319                 priv->intr_handle_socket.type = RTE_INTR_HANDLE_EXT;
1320                 rte_intr_callback_register(&priv->intr_handle_socket,
1321                                            mlx5_dev_handler_socket, dev);
1322         }
1323 }
1324
1325 /**
1326  * Change the link state (UP / DOWN).
1327  *
1328  * @param priv
1329  *   Pointer to private data structure.
1330  * @param dev
1331  *   Pointer to rte_eth_dev structure.
1332  * @param up
1333  *   Nonzero for link up, otherwise link down.
1334  *
1335  * @return
1336  *   0 on success, errno value on failure.
1337  */
1338 static int
1339 priv_dev_set_link(struct priv *priv, struct rte_eth_dev *dev, int up)
1340 {
1341         int err;
1342
1343         if (up) {
1344                 err = priv_set_flags(priv, ~IFF_UP, IFF_UP);
1345                 if (err)
1346                         return err;
1347                 priv_dev_select_tx_function(priv, dev);
1348                 priv_dev_select_rx_function(priv, dev);
1349         } else {
1350                 err = priv_set_flags(priv, ~IFF_UP, ~IFF_UP);
1351                 if (err)
1352                         return err;
1353                 dev->rx_pkt_burst = removed_rx_burst;
1354                 dev->tx_pkt_burst = removed_tx_burst;
1355         }
1356         return 0;
1357 }
1358
1359 /**
1360  * DPDK callback to bring the link DOWN.
1361  *
1362  * @param dev
1363  *   Pointer to Ethernet device structure.
1364  *
1365  * @return
1366  *   0 on success, errno value on failure.
1367  */
1368 int
1369 mlx5_set_link_down(struct rte_eth_dev *dev)
1370 {
1371         struct priv *priv = dev->data->dev_private;
1372         int err;
1373
1374         priv_lock(priv);
1375         err = priv_dev_set_link(priv, dev, 0);
1376         priv_unlock(priv);
1377         return err;
1378 }
1379
1380 /**
1381  * DPDK callback to bring the link UP.
1382  *
1383  * @param dev
1384  *   Pointer to Ethernet device structure.
1385  *
1386  * @return
1387  *   0 on success, errno value on failure.
1388  */
1389 int
1390 mlx5_set_link_up(struct rte_eth_dev *dev)
1391 {
1392         struct priv *priv = dev->data->dev_private;
1393         int err;
1394
1395         priv_lock(priv);
1396         err = priv_dev_set_link(priv, dev, 1);
1397         priv_unlock(priv);
1398         return err;
1399 }
1400
1401 /**
1402  * Configure the TX function to use.
1403  *
1404  * @param priv
1405  *   Pointer to private data structure.
1406  * @param dev
1407  *   Pointer to rte_eth_dev structure.
1408  */
1409 void
1410 priv_dev_select_tx_function(struct priv *priv, struct rte_eth_dev *dev)
1411 {
1412         assert(priv != NULL);
1413         assert(dev != NULL);
1414         dev->tx_pkt_burst = mlx5_tx_burst;
1415         /* Select appropriate TX function. */
1416         if (priv->mps == MLX5_MPW_ENHANCED) {
1417                 if (priv_check_vec_tx_support(priv) > 0) {
1418                         if (priv_check_raw_vec_tx_support(priv) > 0)
1419                                 dev->tx_pkt_burst = mlx5_tx_burst_raw_vec;
1420                         else
1421                                 dev->tx_pkt_burst = mlx5_tx_burst_vec;
1422                         DEBUG("selected Enhanced MPW TX vectorized function");
1423                 } else {
1424                         dev->tx_pkt_burst = mlx5_tx_burst_empw;
1425                         DEBUG("selected Enhanced MPW TX function");
1426                 }
1427         } else if (priv->mps && priv->txq_inline) {
1428                 dev->tx_pkt_burst = mlx5_tx_burst_mpw_inline;
1429                 DEBUG("selected MPW inline TX function");
1430         } else if (priv->mps) {
1431                 dev->tx_pkt_burst = mlx5_tx_burst_mpw;
1432                 DEBUG("selected MPW TX function");
1433         }
1434 }
1435
1436 /**
1437  * Configure the RX function to use.
1438  *
1439  * @param priv
1440  *   Pointer to private data structure.
1441  * @param dev
1442  *   Pointer to rte_eth_dev structure.
1443  */
1444 void
1445 priv_dev_select_rx_function(struct priv *priv, struct rte_eth_dev *dev)
1446 {
1447         assert(priv != NULL);
1448         assert(dev != NULL);
1449         if (priv_check_vec_rx_support(priv) > 0) {
1450                 dev->rx_pkt_burst = mlx5_rx_burst_vec;
1451                 DEBUG("selected RX vectorized function");
1452         } else {
1453                 dev->rx_pkt_burst = mlx5_rx_burst;
1454         }
1455 }