drivers/net/mlx5/linux/mlx5_os.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright 2015 6WIND S.A.
   3  * Copyright 2020 Mellanox Technologies, Ltd
   4  */
   5
   6 #include <stddef.h>
   7 #include <unistd.h>
   8 #include <string.h>
   9 #include <stdint.h>
  10 #include <stdlib.h>
  11 #include <errno.h>
  12 #include <net/if.h>
  13 #include <linux/rtnetlink.h>
  14 #include <linux/sockios.h>
  15 #include <linux/ethtool.h>
  16 #include <fcntl.h>
  17
  18 #include <rte_malloc.h>
  19 #include <rte_ethdev_driver.h>
  20 #include <rte_ethdev_pci.h>
  21 #include <rte_pci.h>
  22 #include <rte_bus_pci.h>
  23 #include <rte_common.h>
  24 #include <rte_kvargs.h>
  25 #include <rte_rwlock.h>
  26 #include <rte_spinlock.h>
  27 #include <rte_string_fns.h>
  28 #include <rte_alarm.h>
  29 #include <rte_eal_paging.h>
  30
  31 #include <mlx5_glue.h>
  32 #include <mlx5_devx_cmds.h>
  33 #include <mlx5_common.h>
  34 #include <mlx5_common_mp.h>
  35 #include <mlx5_common_mr.h>
  36 #include <mlx5_malloc.h>
  37
  38 #include "mlx5_defs.h"
  39 #include "mlx5.h"
  40 #include "mlx5_common_os.h"
  41 #include "mlx5_utils.h"
  42 #include "mlx5_rxtx.h"
  43 #include "mlx5_autoconf.h"
  44 #include "mlx5_mr.h"
  45 #include "mlx5_flow.h"
  46 #include "rte_pmd_mlx5.h"
  47 #include "mlx5_verbs.h"
  48 #include "mlx5_nl.h"
  49 #include "mlx5_devx.h"
  50
  51 #define MLX5_TAGS_HLIST_ARRAY_SIZE 8192
  52
  53 #ifndef HAVE_IBV_MLX5_MOD_MPW
  54 #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2)
  55 #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3)
  56 #endif
  57
  58 #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP
  59 #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4)
  60 #endif
  61
  62 static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data";
  63
  64 /* Spinlock for mlx5_shared_data allocation. */
  65 static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER;
  66
  67 /* Process local data for secondary processes. */
  68 static struct mlx5_local_data mlx5_local_data;
  69
  70 /**
  71  * Set the completion channel file descriptor interrupt as non-blocking.
  72  *
  73  * @param[in] rxq_obj
  74  *   Pointer to RQ channel object, which includes the channel fd
  75  *
  76  * @param[out] fd
  77  *   The file descriptor (representing the intetrrupt) used in this channel.
  78  *
  79  * @return
  80  *   0 on successfully setting the fd to non-blocking, non-zero otherwise.
  81  */
  82 int
  83 mlx5_os_set_nonblock_channel_fd(int fd)
  84 {
  85         int flags;
  86
  87         flags = fcntl(fd, F_GETFL);
  88         return fcntl(fd, F_SETFL, flags | O_NONBLOCK);
  89 }
  90
  91 /**
  92  * Get mlx5 device attributes. The glue function query_device_ex() is called
  93  * with out parameter of type 'struct ibv_device_attr_ex *'. Then fill in mlx5
  94  * device attributes from the glue out parameter.
  95  *
  96  * @param dev
  97  *   Pointer to ibv context.
  98  *
  99  * @param device_attr
 100  *   Pointer to mlx5 device attributes.
 101  *
 102  * @return
 103  *   0 on success, non zero error number otherwise
 104  */
 105 int
 106 mlx5_os_get_dev_attr(void *ctx, struct mlx5_dev_attr *device_attr)
 107 {
 108         int err;
 109         struct ibv_device_attr_ex attr_ex;
 110         memset(device_attr, 0, sizeof(*device_attr));
 111         err = mlx5_glue->query_device_ex(ctx, NULL, &attr_ex);
 112         if (err)
 113                 return err;
 114
 115         device_attr->device_cap_flags_ex = attr_ex.device_cap_flags_ex;
 116         device_attr->max_qp_wr = attr_ex.orig_attr.max_qp_wr;
 117         device_attr->max_sge = attr_ex.orig_attr.max_sge;
 118         device_attr->max_cq = attr_ex.orig_attr.max_cq;
 119         device_attr->max_qp = attr_ex.orig_attr.max_qp;
 120         device_attr->raw_packet_caps = attr_ex.raw_packet_caps;
 121         device_attr->max_rwq_indirection_table_size =
 122                 attr_ex.rss_caps.max_rwq_indirection_table_size;
 123         device_attr->max_tso = attr_ex.tso_caps.max_tso;
 124         device_attr->tso_supported_qpts = attr_ex.tso_caps.supported_qpts;
 125
 126         struct mlx5dv_context dv_attr = { .comp_mask = 0 };
 127         err = mlx5_glue->dv_query_device(ctx, &dv_attr);
 128         if (err)
 129                 return err;
 130
 131         device_attr->flags = dv_attr.flags;
 132         device_attr->comp_mask = dv_attr.comp_mask;
 133 #ifdef HAVE_IBV_MLX5_MOD_SWP
 134         device_attr->sw_parsing_offloads =
 135                 dv_attr.sw_parsing_caps.sw_parsing_offloads;
 136 #endif
 137         device_attr->min_single_stride_log_num_of_bytes =
 138                 dv_attr.striding_rq_caps.min_single_stride_log_num_of_bytes;
 139         device_attr->max_single_stride_log_num_of_bytes =
 140                 dv_attr.striding_rq_caps.max_single_stride_log_num_of_bytes;
 141         device_attr->min_single_wqe_log_num_of_strides =
 142                 dv_attr.striding_rq_caps.min_single_wqe_log_num_of_strides;
 143         device_attr->max_single_wqe_log_num_of_strides =
 144                 dv_attr.striding_rq_caps.max_single_wqe_log_num_of_strides;
 145         device_attr->stride_supported_qpts =
 146                 dv_attr.striding_rq_caps.supported_qpts;
 147 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 148         device_attr->tunnel_offloads_caps = dv_attr.tunnel_offloads_caps;
 149 #endif
 150
 151         return err;
 152 }
 153
 154 /**
 155  * Verbs callback to allocate a memory. This function should allocate the space
 156  * according to the size provided residing inside a huge page.
 157  * Please note that all allocation must respect the alignment from libmlx5
 158  * (i.e. currently rte_mem_page_size()).
 159  *
 160  * @param[in] size
 161  *   The size in bytes of the memory to allocate.
 162  * @param[in] data
 163  *   A pointer to the callback data.
 164  *
 165  * @return
 166  *   Allocated buffer, NULL otherwise and rte_errno is set.
 167  */
 168 static void *
 169 mlx5_alloc_verbs_buf(size_t size, void *data)
 170 {
 171         struct mlx5_priv *priv = data;
 172         void *ret;
 173         unsigned int socket = SOCKET_ID_ANY;
 174         size_t alignment = rte_mem_page_size();
 175         if (alignment == (size_t)-1) {
 176                 DRV_LOG(ERR, "Failed to get mem page size");
 177                 rte_errno = ENOMEM;
 178                 return NULL;
 179         }
 180
 181         if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) {
 182                 const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
 183
 184                 socket = ctrl->socket;
 185         } else if (priv->verbs_alloc_ctx.type ==
 186                    MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) {
 187                 const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj;
 188
 189                 socket = ctrl->socket;
 190         }
 191         MLX5_ASSERT(data != NULL);
 192         ret = mlx5_malloc(0, size, alignment, socket);
 193         if (!ret && size)
 194                 rte_errno = ENOMEM;
 195         return ret;
 196 }
 197
 198 /**
 199  * Verbs callback to free a memory.
 200  *
 201  * @param[in] ptr
 202  *   A pointer to the memory to free.
 203  * @param[in] data
 204  *   A pointer to the callback data.
 205  */
 206 static void
 207 mlx5_free_verbs_buf(void *ptr, void *data __rte_unused)
 208 {
 209         MLX5_ASSERT(data != NULL);
 210         mlx5_free(ptr);
 211 }
 212
 213 /**
 214  * Initialize DR related data within private structure.
 215  * Routine checks the reference counter and does actual
 216  * resources creation/initialization only if counter is zero.
 217  *
 218  * @param[in] priv
 219  *   Pointer to the private device data structure.
 220  *
 221  * @return
 222  *   Zero on success, positive error code otherwise.
 223  */
 224 static int
 225 mlx5_alloc_shared_dr(struct mlx5_priv *priv)
 226 {
 227         struct mlx5_dev_ctx_shared *sh = priv->sh;
 228         char s[MLX5_HLIST_NAMESIZE];
 229         int err;
 230
 231         MLX5_ASSERT(sh && sh->refcnt);
 232         if (sh->refcnt > 1)
 233                 return 0;
 234         err = mlx5_alloc_table_hash_list(priv);
 235         if (err)
 236                 return err;
 237         /* Create tags hash list table. */
 238         snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name);
 239         sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE);
 240         if (!sh->tag_table) {
 241                 DRV_LOG(ERR, "tags with hash creation failed.");
 242                 err = ENOMEM;
 243                 goto error;
 244         }
 245         snprintf(s, sizeof(s), "%s_hdr_modify", sh->ibdev_name);
 246         sh->modify_cmds = mlx5_hlist_create(s, MLX5_FLOW_HDR_MODIFY_HTABLE_SZ);
 247         if (!sh->modify_cmds) {
 248                 DRV_LOG(ERR, "hdr modify hash creation failed");
 249                 err = ENOMEM;
 250                 goto error;
 251         }
 252         snprintf(s, sizeof(s), "%s_encaps_decaps", sh->ibdev_name);
 253         sh->encaps_decaps = mlx5_hlist_create(s,
 254                                               MLX5_FLOW_ENCAP_DECAP_HTABLE_SZ);
 255         if (!sh->encaps_decaps) {
 256                 DRV_LOG(ERR, "encap decap hash creation failed");
 257                 err = ENOMEM;
 258                 goto error;
 259         }
 260 #ifdef HAVE_MLX5DV_DR
 261         void *domain;
 262
 263         /* Reference counter is zero, we should initialize structures. */
 264         domain = mlx5_glue->dr_create_domain(sh->ctx,
 265                                              MLX5DV_DR_DOMAIN_TYPE_NIC_RX);
 266         if (!domain) {
 267                 DRV_LOG(ERR, "ingress mlx5dv_dr_create_domain failed");
 268                 err = errno;
 269                 goto error;
 270         }
 271         sh->rx_domain = domain;
 272         domain = mlx5_glue->dr_create_domain(sh->ctx,
 273                                              MLX5DV_DR_DOMAIN_TYPE_NIC_TX);
 274         if (!domain) {
 275                 DRV_LOG(ERR, "egress mlx5dv_dr_create_domain failed");
 276                 err = errno;
 277                 goto error;
 278         }
 279         pthread_mutex_init(&sh->dv_mutex, NULL);
 280         sh->tx_domain = domain;
 281 #ifdef HAVE_MLX5DV_DR_ESWITCH
 282         if (priv->config.dv_esw_en) {
 283                 domain  = mlx5_glue->dr_create_domain
 284                         (sh->ctx, MLX5DV_DR_DOMAIN_TYPE_FDB);
 285                 if (!domain) {
 286                         DRV_LOG(ERR, "FDB mlx5dv_dr_create_domain failed");
 287                         err = errno;
 288                         goto error;
 289                 }
 290                 sh->fdb_domain = domain;
 291                 sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop();
 292         }
 293 #endif
 294         if (!sh->tunnel_hub)
 295                 err = mlx5_alloc_tunnel_hub(sh);
 296         if (err) {
 297                 DRV_LOG(ERR, "mlx5_alloc_tunnel_hub failed err=%d", err);
 298                 goto error;
 299         }
 300         if (priv->config.reclaim_mode == MLX5_RCM_AGGR) {
 301                 mlx5_glue->dr_reclaim_domain_memory(sh->rx_domain, 1);
 302                 mlx5_glue->dr_reclaim_domain_memory(sh->tx_domain, 1);
 303                 if (sh->fdb_domain)
 304                         mlx5_glue->dr_reclaim_domain_memory(sh->fdb_domain, 1);
 305         }
 306         sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan();
 307 #endif /* HAVE_MLX5DV_DR */
 308         sh->default_miss_action =
 309                         mlx5_glue->dr_create_flow_action_default_miss();
 310         if (!sh->default_miss_action)
 311                 DRV_LOG(WARNING, "Default miss action is not supported.");
 312         return 0;
 313 error:
 314         /* Rollback the created objects. */
 315         if (sh->rx_domain) {
 316                 mlx5_glue->dr_destroy_domain(sh->rx_domain);
 317                 sh->rx_domain = NULL;
 318         }
 319         if (sh->tx_domain) {
 320                 mlx5_glue->dr_destroy_domain(sh->tx_domain);
 321                 sh->tx_domain = NULL;
 322         }
 323         if (sh->fdb_domain) {
 324                 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
 325                 sh->fdb_domain = NULL;
 326         }
 327         if (sh->esw_drop_action) {
 328                 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
 329                 sh->esw_drop_action = NULL;
 330         }
 331         if (sh->pop_vlan_action) {
 332                 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
 333                 sh->pop_vlan_action = NULL;
 334         }
 335         if (sh->encaps_decaps) {
 336                 mlx5_hlist_destroy(sh->encaps_decaps, NULL, NULL);
 337                 sh->encaps_decaps = NULL;
 338         }
 339         if (sh->modify_cmds) {
 340                 mlx5_hlist_destroy(sh->modify_cmds, NULL, NULL);
 341                 sh->modify_cmds = NULL;
 342         }
 343         if (sh->tag_table) {
 344                 /* tags should be destroyed with flow before. */
 345                 mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
 346                 sh->tag_table = NULL;
 347         }
 348         if (sh->tunnel_hub) {
 349                 mlx5_release_tunnel_hub(sh, priv->dev_port);
 350                 sh->tunnel_hub = NULL;
 351         }
 352         mlx5_free_table_hash_list(priv);
 353         return err;
 354 }
 355
 356 /**
 357  * Destroy DR related data within private structure.
 358  *
 359  * @param[in] priv
 360  *   Pointer to the private device data structure.
 361  */
 362 void
 363 mlx5_os_free_shared_dr(struct mlx5_priv *priv)
 364 {
 365         struct mlx5_dev_ctx_shared *sh = priv->sh;
 366
 367         MLX5_ASSERT(sh && sh->refcnt);
 368         if (sh->refcnt > 1)
 369                 return;
 370 #ifdef HAVE_MLX5DV_DR
 371         if (sh->rx_domain) {
 372                 mlx5_glue->dr_destroy_domain(sh->rx_domain);
 373                 sh->rx_domain = NULL;
 374         }
 375         if (sh->tx_domain) {
 376                 mlx5_glue->dr_destroy_domain(sh->tx_domain);
 377                 sh->tx_domain = NULL;
 378         }
 379 #ifdef HAVE_MLX5DV_DR_ESWITCH
 380         if (sh->fdb_domain) {
 381                 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
 382                 sh->fdb_domain = NULL;
 383         }
 384         if (sh->esw_drop_action) {
 385                 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
 386                 sh->esw_drop_action = NULL;
 387         }
 388 #endif
 389         if (sh->pop_vlan_action) {
 390                 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
 391                 sh->pop_vlan_action = NULL;
 392         }
 393         pthread_mutex_destroy(&sh->dv_mutex);
 394 #endif /* HAVE_MLX5DV_DR */
 395         if (sh->default_miss_action)
 396                 mlx5_glue->destroy_flow_action
 397                                 (sh->default_miss_action);
 398         if (sh->encaps_decaps) {
 399                 mlx5_hlist_destroy(sh->encaps_decaps, NULL, NULL);
 400                 sh->encaps_decaps = NULL;
 401         }
 402         if (sh->modify_cmds) {
 403                 mlx5_hlist_destroy(sh->modify_cmds, NULL, NULL);
 404                 sh->modify_cmds = NULL;
 405         }
 406         if (sh->tag_table) {
 407                 /* tags should be destroyed with flow before. */
 408                 mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
 409                 sh->tag_table = NULL;
 410         }
 411         if (sh->tunnel_hub) {
 412                 mlx5_release_tunnel_hub(sh, priv->dev_port);
 413                 sh->tunnel_hub = NULL;
 414         }
 415         mlx5_free_table_hash_list(priv);
 416 }
 417
 418 /**
 419  * Initialize shared data between primary and secondary process.
 420  *
 421  * A memzone is reserved by primary process and secondary processes attach to
 422  * the memzone.
 423  *
 424  * @return
 425  *   0 on success, a negative errno value otherwise and rte_errno is set.
 426  */
 427 static int
 428 mlx5_init_shared_data(void)
 429 {
 430         const struct rte_memzone *mz;
 431         int ret = 0;
 432
 433         rte_spinlock_lock(&mlx5_shared_data_lock);
 434         if (mlx5_shared_data == NULL) {
 435                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 436                         /* Allocate shared memory. */
 437                         mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA,
 438                                                  sizeof(*mlx5_shared_data),
 439                                                  SOCKET_ID_ANY, 0);
 440                         if (mz == NULL) {
 441                                 DRV_LOG(ERR,
 442                                         "Cannot allocate mlx5 shared data");
 443                                 ret = -rte_errno;
 444                                 goto error;
 445                         }
 446                         mlx5_shared_data = mz->addr;
 447                         memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data));
 448                         rte_spinlock_init(&mlx5_shared_data->lock);
 449                 } else {
 450                         /* Lookup allocated shared memory. */
 451                         mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
 452                         if (mz == NULL) {
 453                                 DRV_LOG(ERR,
 454                                         "Cannot attach mlx5 shared data");
 455                                 ret = -rte_errno;
 456                                 goto error;
 457                         }
 458                         mlx5_shared_data = mz->addr;
 459                         memset(&mlx5_local_data, 0, sizeof(mlx5_local_data));
 460                 }
 461         }
 462 error:
 463         rte_spinlock_unlock(&mlx5_shared_data_lock);
 464         return ret;
 465 }
 466
 467 /**
 468  * PMD global initialization.
 469  *
 470  * Independent from individual device, this function initializes global
 471  * per-PMD data structures distinguishing primary and secondary processes.
 472  * Hence, each initialization is called once per a process.
 473  *
 474  * @return
 475  *   0 on success, a negative errno value otherwise and rte_errno is set.
 476  */
 477 static int
 478 mlx5_init_once(void)
 479 {
 480         struct mlx5_shared_data *sd;
 481         struct mlx5_local_data *ld = &mlx5_local_data;
 482         int ret = 0;
 483
 484         if (mlx5_init_shared_data())
 485                 return -rte_errno;
 486         sd = mlx5_shared_data;
 487         MLX5_ASSERT(sd);
 488         rte_spinlock_lock(&sd->lock);
 489         switch (rte_eal_process_type()) {
 490         case RTE_PROC_PRIMARY:
 491                 if (sd->init_done)
 492                         break;
 493                 LIST_INIT(&sd->mem_event_cb_list);
 494                 rte_rwlock_init(&sd->mem_event_rwlock);
 495                 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
 496                                                 mlx5_mr_mem_event_cb, NULL);
 497                 ret = mlx5_mp_init_primary(MLX5_MP_NAME,
 498                                            mlx5_mp_os_primary_handle);
 499                 if (ret)
 500                         goto out;
 501                 sd->init_done = true;
 502                 break;
 503         case RTE_PROC_SECONDARY:
 504                 if (ld->init_done)
 505                         break;
 506                 ret = mlx5_mp_init_secondary(MLX5_MP_NAME,
 507                                              mlx5_mp_os_secondary_handle);
 508                 if (ret)
 509                         goto out;
 510                 ++sd->secondary_cnt;
 511                 ld->init_done = true;
 512                 break;
 513         default:
 514                 break;
 515         }
 516 out:
 517         rte_spinlock_unlock(&sd->lock);
 518         return ret;
 519 }
 520
 521 /**
 522  * Create the Tx queue DevX/Verbs object.
 523  *
 524  * @param dev
 525  *   Pointer to Ethernet device.
 526  * @param idx
 527  *   Queue index in DPDK Tx queue array.
 528  *
 529  * @return
 530  *   0 on success, a negative errno value otherwise and rte_errno is set.
 531  */
 532 static int
 533 mlx5_os_txq_obj_new(struct rte_eth_dev *dev, uint16_t idx)
 534 {
 535         struct mlx5_priv *priv = dev->data->dev_private;
 536         struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
 537         struct mlx5_txq_ctrl *txq_ctrl =
 538                         container_of(txq_data, struct mlx5_txq_ctrl, txq);
 539
 540         if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN)
 541                 return mlx5_txq_devx_obj_new(dev, idx);
 542 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
 543         if (!priv->config.dv_esw_en)
 544                 return mlx5_txq_devx_obj_new(dev, idx);
 545 #endif
 546         return mlx5_txq_ibv_obj_new(dev, idx);
 547 }
 548
 549 /**
 550  * Release an Tx DevX/verbs queue object.
 551  *
 552  * @param txq_obj
 553  *   DevX/Verbs Tx queue object.
 554  */
 555 static void
 556 mlx5_os_txq_obj_release(struct mlx5_txq_obj *txq_obj)
 557 {
 558         if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) {
 559                 mlx5_txq_devx_obj_release(txq_obj);
 560                 return;
 561         }
 562 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
 563         if (!txq_obj->txq_ctrl->priv->config.dv_esw_en) {
 564                 mlx5_txq_devx_obj_release(txq_obj);
 565                 return;
 566         }
 567 #endif
 568         mlx5_txq_ibv_obj_release(txq_obj);
 569 }
 570
 571 /**
 572  * DV flow counter mode detect and config.
 573  *
 574  * @param dev
 575  *   Pointer to rte_eth_dev structure.
 576  *
 577  */
 578 static void
 579 mlx5_flow_counter_mode_config(struct rte_eth_dev *dev __rte_unused)
 580 {
 581 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
 582         struct mlx5_priv *priv = dev->data->dev_private;
 583         struct mlx5_dev_ctx_shared *sh = priv->sh;
 584         bool fallback;
 585
 586 #ifndef HAVE_IBV_DEVX_ASYNC
 587         fallback = true;
 588 #else
 589         fallback = false;
 590         if (!priv->config.devx || !priv->config.dv_flow_en ||
 591             !priv->config.hca_attr.flow_counters_dump ||
 592             !(priv->config.hca_attr.flow_counter_bulk_alloc_bitmap & 0x4) ||
 593             (mlx5_flow_dv_discover_counter_offset_support(dev) == -ENOTSUP))
 594                 fallback = true;
 595 #endif
 596         if (fallback)
 597                 DRV_LOG(INFO, "Use fall-back DV counter management. Flow "
 598                         "counter dump:%d, bulk_alloc_bitmap:0x%hhx.",
 599                         priv->config.hca_attr.flow_counters_dump,
 600                         priv->config.hca_attr.flow_counter_bulk_alloc_bitmap);
 601         /* Initialize fallback mode only on the port initializes sh. */
 602         if (sh->refcnt == 1)
 603                 sh->cmng.counter_fallback = fallback;
 604         else if (fallback != sh->cmng.counter_fallback)
 605                 DRV_LOG(WARNING, "Port %d in sh has different fallback mode "
 606                         "with others:%d.", PORT_ID(priv), fallback);
 607 #endif
 608 }
 609
 610 /**
 611  * Spawn an Ethernet device from Verbs information.
 612  *
 613  * @param dpdk_dev
 614  *   Backing DPDK device.
 615  * @param spawn
 616  *   Verbs device parameters (name, port, switch_info) to spawn.
 617  * @param config
 618  *   Device configuration parameters.
 619  *
 620  * @return
 621  *   A valid Ethernet device object on success, NULL otherwise and rte_errno
 622  *   is set. The following errors are defined:
 623  *
 624  *   EBUSY: device is not supposed to be spawned.
 625  *   EEXIST: device is already spawned
 626  */
 627 static struct rte_eth_dev *
 628 mlx5_dev_spawn(struct rte_device *dpdk_dev,
 629                struct mlx5_dev_spawn_data *spawn,
 630                struct mlx5_dev_config *config)
 631 {
 632         const struct mlx5_switch_info *switch_info = &spawn->info;
 633         struct mlx5_dev_ctx_shared *sh = NULL;
 634         struct ibv_port_attr port_attr;
 635         struct mlx5dv_context dv_attr = { .comp_mask = 0 };
 636         struct rte_eth_dev *eth_dev = NULL;
 637         struct mlx5_priv *priv = NULL;
 638         int err = 0;
 639         unsigned int hw_padding = 0;
 640         unsigned int mps;
 641         unsigned int cqe_comp;
 642         unsigned int cqe_pad = 0;
 643         unsigned int tunnel_en = 0;
 644         unsigned int mpls_en = 0;
 645         unsigned int swp = 0;
 646         unsigned int mprq = 0;
 647         unsigned int mprq_min_stride_size_n = 0;
 648         unsigned int mprq_max_stride_size_n = 0;
 649         unsigned int mprq_min_stride_num_n = 0;
 650         unsigned int mprq_max_stride_num_n = 0;
 651         struct rte_ether_addr mac;
 652         char name[RTE_ETH_NAME_MAX_LEN];
 653         int own_domain_id = 0;
 654         uint16_t port_id;
 655         unsigned int i;
 656 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
 657         struct mlx5dv_devx_port devx_port = { .comp_mask = 0 };
 658 #endif
 659
 660         /* Determine if this port representor is supposed to be spawned. */
 661         if (switch_info->representor && dpdk_dev->devargs) {
 662                 struct rte_eth_devargs eth_da;
 663
 664                 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, &eth_da);
 665                 if (err) {
 666                         rte_errno = -err;
 667                         DRV_LOG(ERR, "failed to process device arguments: %s",
 668                                 strerror(rte_errno));
 669                         return NULL;
 670                 }
 671                 for (i = 0; i < eth_da.nb_representor_ports; ++i)
 672                         if (eth_da.representor_ports[i] ==
 673                             (uint16_t)switch_info->port_name)
 674                                 break;
 675                 if (i == eth_da.nb_representor_ports) {
 676                         rte_errno = EBUSY;
 677                         return NULL;
 678                 }
 679         }
 680         /* Build device name. */
 681         if (spawn->pf_bond <  0) {
 682                 /* Single device. */
 683                 if (!switch_info->representor)
 684                         strlcpy(name, dpdk_dev->name, sizeof(name));
 685                 else
 686                         snprintf(name, sizeof(name), "%s_representor_%u",
 687                                  dpdk_dev->name, switch_info->port_name);
 688         } else {
 689                 /* Bonding device. */
 690                 if (!switch_info->representor)
 691                         snprintf(name, sizeof(name), "%s_%s",
 692                                  dpdk_dev->name,
 693                                  mlx5_os_get_dev_device_name(spawn->phys_dev));
 694                 else
 695                         snprintf(name, sizeof(name), "%s_%s_representor_%u",
 696                                  dpdk_dev->name,
 697                                  mlx5_os_get_dev_device_name(spawn->phys_dev),
 698                                  switch_info->port_name);
 699         }
 700         /* check if the device is already spawned */
 701         if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) {
 702                 rte_errno = EEXIST;
 703                 return NULL;
 704         }
 705         DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name);
 706         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 707                 struct mlx5_mp_id mp_id;
 708
 709                 eth_dev = rte_eth_dev_attach_secondary(name);
 710                 if (eth_dev == NULL) {
 711                         DRV_LOG(ERR, "can not attach rte ethdev");
 712                         rte_errno = ENOMEM;
 713                         return NULL;
 714                 }
 715                 eth_dev->device = dpdk_dev;
 716                 eth_dev->dev_ops = &mlx5_os_dev_sec_ops;
 717                 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
 718                 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
 719                 err = mlx5_proc_priv_init(eth_dev);
 720                 if (err)
 721                         return NULL;
 722                 mp_id.port_id = eth_dev->data->port_id;
 723                 strlcpy(mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
 724                 /* Receive command fd from primary process */
 725                 err = mlx5_mp_req_verbs_cmd_fd(&mp_id);
 726                 if (err < 0)
 727                         goto err_secondary;
 728                 /* Remap UAR for Tx queues. */
 729                 err = mlx5_tx_uar_init_secondary(eth_dev, err);
 730                 if (err)
 731                         goto err_secondary;
 732                 /*
 733                  * Ethdev pointer is still required as input since
 734                  * the primary device is not accessible from the
 735                  * secondary process.
 736                  */
 737                 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev);
 738                 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev);
 739                 return eth_dev;
 740 err_secondary:
 741                 mlx5_dev_close(eth_dev);
 742                 return NULL;
 743         }
 744         /*
 745          * Some parameters ("tx_db_nc" in particularly) are needed in
 746          * advance to create dv/verbs device context. We proceed the
 747          * devargs here to get ones, and later proceed devargs again
 748          * to override some hardware settings.
 749          */
 750         err = mlx5_args(config, dpdk_dev->devargs);
 751         if (err) {
 752                 err = rte_errno;
 753                 DRV_LOG(ERR, "failed to process device arguments: %s",
 754                         strerror(rte_errno));
 755                 goto error;
 756         }
 757         if (config->dv_miss_info) {
 758                 if (switch_info->master || switch_info->representor)
 759                         config->dv_xmeta_en = MLX5_XMETA_MODE_META16;
 760         }
 761         mlx5_malloc_mem_select(config->sys_mem_en);
 762         sh = mlx5_alloc_shared_dev_ctx(spawn, config);
 763         if (!sh)
 764                 return NULL;
 765         config->devx = sh->devx;
 766 #ifdef HAVE_MLX5DV_DR_ACTION_DEST_DEVX_TIR
 767         config->dest_tir = 1;
 768 #endif
 769 #ifdef HAVE_IBV_MLX5_MOD_SWP
 770         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP;
 771 #endif
 772         /*
 773          * Multi-packet send is supported by ConnectX-4 Lx PF as well
 774          * as all ConnectX-5 devices.
 775          */
 776 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 777         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
 778 #endif
 779 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
 780         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ;
 781 #endif
 782         mlx5_glue->dv_query_device(sh->ctx, &dv_attr);
 783         if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
 784                 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
 785                         DRV_LOG(DEBUG, "enhanced MPW is supported");
 786                         mps = MLX5_MPW_ENHANCED;
 787                 } else {
 788                         DRV_LOG(DEBUG, "MPW is supported");
 789                         mps = MLX5_MPW;
 790                 }
 791         } else {
 792                 DRV_LOG(DEBUG, "MPW isn't supported");
 793                 mps = MLX5_MPW_DISABLED;
 794         }
 795 #ifdef HAVE_IBV_MLX5_MOD_SWP
 796         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP)
 797                 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads;
 798         DRV_LOG(DEBUG, "SWP support: %u", swp);
 799 #endif
 800         config->swp = !!swp;
 801 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
 802         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) {
 803                 struct mlx5dv_striding_rq_caps mprq_caps =
 804                         dv_attr.striding_rq_caps;
 805
 806                 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d",
 807                         mprq_caps.min_single_stride_log_num_of_bytes);
 808                 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d",
 809                         mprq_caps.max_single_stride_log_num_of_bytes);
 810                 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d",
 811                         mprq_caps.min_single_wqe_log_num_of_strides);
 812                 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d",
 813                         mprq_caps.max_single_wqe_log_num_of_strides);
 814                 DRV_LOG(DEBUG, "\tsupported_qpts: %d",
 815                         mprq_caps.supported_qpts);
 816                 DRV_LOG(DEBUG, "device supports Multi-Packet RQ");
 817                 mprq = 1;
 818                 mprq_min_stride_size_n =
 819                         mprq_caps.min_single_stride_log_num_of_bytes;
 820                 mprq_max_stride_size_n =
 821                         mprq_caps.max_single_stride_log_num_of_bytes;
 822                 mprq_min_stride_num_n =
 823                         mprq_caps.min_single_wqe_log_num_of_strides;
 824                 mprq_max_stride_num_n =
 825                         mprq_caps.max_single_wqe_log_num_of_strides;
 826         }
 827 #endif
 828         if (RTE_CACHE_LINE_SIZE == 128 &&
 829             !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
 830                 cqe_comp = 0;
 831         else
 832                 cqe_comp = 1;
 833         config->cqe_comp = cqe_comp;
 834 #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD
 835         /* Whether device supports 128B Rx CQE padding. */
 836         cqe_pad = RTE_CACHE_LINE_SIZE == 128 &&
 837                   (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD);
 838 #endif
 839 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 840         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
 841                 tunnel_en = ((dv_attr.tunnel_offloads_caps &
 842                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
 843                              (dv_attr.tunnel_offloads_caps &
 844                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE) &&
 845                              (dv_attr.tunnel_offloads_caps &
 846                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GENEVE));
 847         }
 848         DRV_LOG(DEBUG, "tunnel offloading is %ssupported",
 849                 tunnel_en ? "" : "not ");
 850 #else
 851         DRV_LOG(WARNING,
 852                 "tunnel offloading disabled due to old OFED/rdma-core version");
 853 #endif
 854         config->tunnel_en = tunnel_en;
 855 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
 856         mpls_en = ((dv_attr.tunnel_offloads_caps &
 857                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) &&
 858                    (dv_attr.tunnel_offloads_caps &
 859                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP));
 860         DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported",
 861                 mpls_en ? "" : "not ");
 862 #else
 863         DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to"
 864                 " old OFED/rdma-core version or firmware configuration");
 865 #endif
 866         config->mpls_en = mpls_en;
 867         /* Check port status. */
 868         err = mlx5_glue->query_port(sh->ctx, spawn->phys_port, &port_attr);
 869         if (err) {
 870                 DRV_LOG(ERR, "port query failed: %s", strerror(err));
 871                 goto error;
 872         }
 873         if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
 874                 DRV_LOG(ERR, "port is not configured in Ethernet mode");
 875                 err = EINVAL;
 876                 goto error;
 877         }
 878         if (port_attr.state != IBV_PORT_ACTIVE)
 879                 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)",
 880                         mlx5_glue->port_state_str(port_attr.state),
 881                         port_attr.state);
 882         /* Allocate private eth device data. */
 883         priv = mlx5_malloc(MLX5_MEM_ZERO | MLX5_MEM_RTE,
 884                            sizeof(*priv),
 885                            RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
 886         if (priv == NULL) {
 887                 DRV_LOG(ERR, "priv allocation failure");
 888                 err = ENOMEM;
 889                 goto error;
 890         }
 891         priv->sh = sh;
 892         priv->dev_port = spawn->phys_port;
 893         priv->pci_dev = spawn->pci_dev;
 894         priv->mtu = RTE_ETHER_MTU;
 895         priv->mp_id.port_id = port_id;
 896         strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
 897         /* Some internal functions rely on Netlink sockets, open them now. */
 898         priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
 899         priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
 900         priv->representor = !!switch_info->representor;
 901         priv->master = !!switch_info->master;
 902         priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
 903         priv->vport_meta_tag = 0;
 904         priv->vport_meta_mask = 0;
 905         priv->pf_bond = spawn->pf_bond;
 906 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
 907         /*
 908          * The DevX port query API is implemented. E-Switch may use
 909          * either vport or reg_c[0] metadata register to match on
 910          * vport index. The engaged part of metadata register is
 911          * defined by mask.
 912          */
 913         if (switch_info->representor || switch_info->master) {
 914                 devx_port.comp_mask = MLX5DV_DEVX_PORT_VPORT |
 915                                       MLX5DV_DEVX_PORT_MATCH_REG_C_0;
 916                 err = mlx5_glue->devx_port_query(sh->ctx, spawn->phys_port,
 917                                                  &devx_port);
 918                 if (err) {
 919                         DRV_LOG(WARNING,
 920                                 "can't query devx port %d on device %s",
 921                                 spawn->phys_port,
 922                                 mlx5_os_get_dev_device_name(spawn->phys_dev));
 923                         devx_port.comp_mask = 0;
 924                 }
 925         }
 926         if (devx_port.comp_mask & MLX5DV_DEVX_PORT_MATCH_REG_C_0) {
 927                 priv->vport_meta_tag = devx_port.reg_c_0.value;
 928                 priv->vport_meta_mask = devx_port.reg_c_0.mask;
 929                 if (!priv->vport_meta_mask) {
 930                         DRV_LOG(ERR, "vport zero mask for port %d"
 931                                      " on bonding device %s",
 932                                      spawn->phys_port,
 933                                      mlx5_os_get_dev_device_name
 934                                                         (spawn->phys_dev));
 935                         err = ENOTSUP;
 936                         goto error;
 937                 }
 938                 if (priv->vport_meta_tag & ~priv->vport_meta_mask) {
 939                         DRV_LOG(ERR, "invalid vport tag for port %d"
 940                                      " on bonding device %s",
 941                                      spawn->phys_port,
 942                                      mlx5_os_get_dev_device_name
 943                                                         (spawn->phys_dev));
 944                         err = ENOTSUP;
 945                         goto error;
 946                 }
 947         }
 948         if (devx_port.comp_mask & MLX5DV_DEVX_PORT_VPORT) {
 949                 priv->vport_id = devx_port.vport_num;
 950         } else if (spawn->pf_bond >= 0) {
 951                 DRV_LOG(ERR, "can't deduce vport index for port %d"
 952                              " on bonding device %s",
 953                              spawn->phys_port,
 954                              mlx5_os_get_dev_device_name(spawn->phys_dev));
 955                 err = ENOTSUP;
 956                 goto error;
 957         } else {
 958                 /* Suppose vport index in compatible way. */
 959                 priv->vport_id = switch_info->representor ?
 960                                  switch_info->port_name + 1 : -1;
 961         }
 962 #else
 963         /*
 964          * Kernel/rdma_core support single E-Switch per PF configurations
 965          * only and vport_id field contains the vport index for
 966          * associated VF, which is deduced from representor port name.
 967          * For example, let's have the IB device port 10, it has
 968          * attached network device eth0, which has port name attribute
 969          * pf0vf2, we can deduce the VF number as 2, and set vport index
 970          * as 3 (2+1). This assigning schema should be changed if the
 971          * multiple E-Switch instances per PF configurations or/and PCI
 972          * subfunctions are added.
 973          */
 974         priv->vport_id = switch_info->representor ?
 975                          switch_info->port_name + 1 : -1;
 976 #endif
 977         /* representor_id field keeps the unmodified VF index. */
 978         priv->representor_id = switch_info->representor ?
 979                                switch_info->port_name : -1;
 980         /*
 981          * Look for sibling devices in order to reuse their switch domain
 982          * if any, otherwise allocate one.
 983          */
 984         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 985                 const struct mlx5_priv *opriv =
 986                         rte_eth_devices[port_id].data->dev_private;
 987
 988                 if (!opriv ||
 989                     opriv->sh != priv->sh ||
 990                         opriv->domain_id ==
 991                         RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
 992                         continue;
 993                 priv->domain_id = opriv->domain_id;
 994                 break;
 995         }
 996         if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
 997                 err = rte_eth_switch_domain_alloc(&priv->domain_id);
 998                 if (err) {
 999                         err = rte_errno;
1000                         DRV_LOG(ERR, "unable to allocate switch domain: %s",
1001                                 strerror(rte_errno));
1002                         goto error;
1003                 }
1004                 own_domain_id = 1;
1005         }
1006         /* Override some values set by hardware configuration. */
1007         mlx5_args(config, dpdk_dev->devargs);
1008         err = mlx5_dev_check_sibling_config(priv, config);
1009         if (err)
1010                 goto error;
1011         config->hw_csum = !!(sh->device_attr.device_cap_flags_ex &
1012                             IBV_DEVICE_RAW_IP_CSUM);
1013         DRV_LOG(DEBUG, "checksum offloading is %ssupported",
1014                 (config->hw_csum ? "" : "not "));
1015 #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \
1016         !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45)
1017         DRV_LOG(DEBUG, "counters are not supported");
1018 #endif
1019 #if !defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_MLX5DV_DR)
1020         if (config->dv_flow_en) {
1021                 DRV_LOG(WARNING, "DV flow is not supported");
1022                 config->dv_flow_en = 0;
1023         }
1024 #endif
1025         config->ind_table_max_size =
1026                 sh->device_attr.max_rwq_indirection_table_size;
1027         /*
1028          * Remove this check once DPDK supports larger/variable
1029          * indirection tables.
1030          */
1031         if (config->ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512)
1032                 config->ind_table_max_size = ETH_RSS_RETA_SIZE_512;
1033         DRV_LOG(DEBUG, "maximum Rx indirection table size is %u",
1034                 config->ind_table_max_size);
1035         config->hw_vlan_strip = !!(sh->device_attr.raw_packet_caps &
1036                                   IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
1037         DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
1038                 (config->hw_vlan_strip ? "" : "not "));
1039         config->hw_fcs_strip = !!(sh->device_attr.raw_packet_caps &
1040                                  IBV_RAW_PACKET_CAP_SCATTER_FCS);
1041 #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING)
1042         hw_padding = !!sh->device_attr.rx_pad_end_addr_align;
1043 #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING)
1044         hw_padding = !!(sh->device_attr.device_cap_flags_ex &
1045                         IBV_DEVICE_PCI_WRITE_END_PADDING);
1046 #endif
1047         if (config->hw_padding && !hw_padding) {
1048                 DRV_LOG(DEBUG, "Rx end alignment padding isn't supported");
1049                 config->hw_padding = 0;
1050         } else if (config->hw_padding) {
1051                 DRV_LOG(DEBUG, "Rx end alignment padding is enabled");
1052         }
1053         config->tso = (sh->device_attr.max_tso > 0 &&
1054                       (sh->device_attr.tso_supported_qpts &
1055                        (1 << IBV_QPT_RAW_PACKET)));
1056         if (config->tso)
1057                 config->tso_max_payload_sz = sh->device_attr.max_tso;
1058         /*
1059          * MPW is disabled by default, while the Enhanced MPW is enabled
1060          * by default.
1061          */
1062         if (config->mps == MLX5_ARG_UNSET)
1063                 config->mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED :
1064                                                           MLX5_MPW_DISABLED;
1065         else
1066                 config->mps = config->mps ? mps : MLX5_MPW_DISABLED;
1067         DRV_LOG(INFO, "%sMPS is %s",
1068                 config->mps == MLX5_MPW_ENHANCED ? "enhanced " :
1069                 config->mps == MLX5_MPW ? "legacy " : "",
1070                 config->mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
1071         if (config->cqe_comp && !cqe_comp) {
1072                 DRV_LOG(WARNING, "Rx CQE compression isn't supported");
1073                 config->cqe_comp = 0;
1074         }
1075         if (config->cqe_pad && !cqe_pad) {
1076                 DRV_LOG(WARNING, "Rx CQE padding isn't supported");
1077                 config->cqe_pad = 0;
1078         } else if (config->cqe_pad) {
1079                 DRV_LOG(INFO, "Rx CQE padding is enabled");
1080         }
1081         if (config->devx) {
1082                 err = mlx5_devx_cmd_query_hca_attr(sh->ctx, &config->hca_attr);
1083                 if (err) {
1084                         err = -err;
1085                         goto error;
1086                 }
1087                 /* Check relax ordering support. */
1088                 if (config->hca_attr.relaxed_ordering_write &&
1089                     config->hca_attr.relaxed_ordering_read  &&
1090                     !haswell_broadwell_cpu)
1091                         sh->cmng.relaxed_ordering = 1;
1092                 /* Check for LRO support. */
1093                 if (config->dest_tir && config->hca_attr.lro_cap &&
1094                     config->dv_flow_en) {
1095                         /* TBD check tunnel lro caps. */
1096                         config->lro.supported = config->hca_attr.lro_cap;
1097                         DRV_LOG(DEBUG, "Device supports LRO");
1098                         /*
1099                          * If LRO timeout is not configured by application,
1100                          * use the minimal supported value.
1101                          */
1102                         if (!config->lro.timeout)
1103                                 config->lro.timeout =
1104                                 config->hca_attr.lro_timer_supported_periods[0];
1105                         DRV_LOG(DEBUG, "LRO session timeout set to %d usec",
1106                                 config->lro.timeout);
1107                         DRV_LOG(DEBUG, "LRO minimal size of TCP segment "
1108                                 "required for coalescing is %d bytes",
1109                                 config->hca_attr.lro_min_mss_size);
1110                 }
1111 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER)
1112                 if (config->hca_attr.qos.sup &&
1113                     config->hca_attr.qos.srtcm_sup &&
1114                     config->dv_flow_en) {
1115                         uint8_t reg_c_mask =
1116                                 config->hca_attr.qos.flow_meter_reg_c_ids;
1117                         /*
1118                          * Meter needs two REG_C's for color match and pre-sfx
1119                          * flow match. Here get the REG_C for color match.
1120                          * REG_C_0 and REG_C_1 is reserved for metadata feature.
1121                          */
1122                         reg_c_mask &= 0xfc;
1123                         if (__builtin_popcount(reg_c_mask) < 1) {
1124                                 priv->mtr_en = 0;
1125                                 DRV_LOG(WARNING, "No available register for"
1126                                         " meter.");
1127                         } else {
1128                                 priv->mtr_color_reg = ffs(reg_c_mask) - 1 +
1129                                                       REG_C_0;
1130                                 priv->mtr_en = 1;
1131                                 priv->mtr_reg_share =
1132                                       config->hca_attr.qos.flow_meter_reg_share;
1133                                 DRV_LOG(DEBUG, "The REG_C meter uses is %d",
1134                                         priv->mtr_color_reg);
1135                         }
1136                 }
1137 #endif
1138 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_SAMPLE)
1139                 if (config->hca_attr.log_max_ft_sampler_num > 0  &&
1140                     config->dv_flow_en) {
1141                         priv->sampler_en = 1;
1142                         DRV_LOG(DEBUG, "The Sampler enabled!\n");
1143                 } else {
1144                         priv->sampler_en = 0;
1145                         if (!config->hca_attr.log_max_ft_sampler_num)
1146                                 DRV_LOG(WARNING, "No available register for"
1147                                                 " Sampler.");
1148                         else
1149                                 DRV_LOG(DEBUG, "DV flow is not supported!\n");
1150                 }
1151 #endif
1152         }
1153         if (config->tx_pp) {
1154                 DRV_LOG(DEBUG, "Timestamp counter frequency %u kHz",
1155                         config->hca_attr.dev_freq_khz);
1156                 DRV_LOG(DEBUG, "Packet pacing is %ssupported",
1157                         config->hca_attr.qos.packet_pacing ? "" : "not ");
1158                 DRV_LOG(DEBUG, "Cross channel ops are %ssupported",
1159                         config->hca_attr.cross_channel ? "" : "not ");
1160                 DRV_LOG(DEBUG, "WQE index ignore is %ssupported",
1161                         config->hca_attr.wqe_index_ignore ? "" : "not ");
1162                 DRV_LOG(DEBUG, "Non-wire SQ feature is %ssupported",
1163                         config->hca_attr.non_wire_sq ? "" : "not ");
1164                 DRV_LOG(DEBUG, "Static WQE SQ feature is %ssupported (%d)",
1165                         config->hca_attr.log_max_static_sq_wq ? "" : "not ",
1166                         config->hca_attr.log_max_static_sq_wq);
1167                 DRV_LOG(DEBUG, "WQE rate PP mode is %ssupported",
1168                         config->hca_attr.qos.wqe_rate_pp ? "" : "not ");
1169                 if (!config->devx) {
1170                         DRV_LOG(ERR, "DevX is required for packet pacing");
1171                         err = ENODEV;
1172                         goto error;
1173                 }
1174                 if (!config->hca_attr.qos.packet_pacing) {
1175                         DRV_LOG(ERR, "Packet pacing is not supported");
1176                         err = ENODEV;
1177                         goto error;
1178                 }
1179                 if (!config->hca_attr.cross_channel) {
1180                         DRV_LOG(ERR, "Cross channel operations are"
1181                                      " required for packet pacing");
1182                         err = ENODEV;
1183                         goto error;
1184                 }
1185                 if (!config->hca_attr.wqe_index_ignore) {
1186                         DRV_LOG(ERR, "WQE index ignore feature is"
1187                                      " required for packet pacing");
1188                         err = ENODEV;
1189                         goto error;
1190                 }
1191                 if (!config->hca_attr.non_wire_sq) {
1192                         DRV_LOG(ERR, "Non-wire SQ feature is"
1193                                      " required for packet pacing");
1194                         err = ENODEV;
1195                         goto error;
1196                 }
1197                 if (!config->hca_attr.log_max_static_sq_wq) {
1198                         DRV_LOG(ERR, "Static WQE SQ feature is"
1199                                      " required for packet pacing");
1200                         err = ENODEV;
1201                         goto error;
1202                 }
1203                 if (!config->hca_attr.qos.wqe_rate_pp) {
1204                         DRV_LOG(ERR, "WQE rate mode is required"
1205                                      " for packet pacing");
1206                         err = ENODEV;
1207                         goto error;
1208                 }
1209 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1210                 DRV_LOG(ERR, "DevX does not provide UAR offset,"
1211                              " can't create queues for packet pacing");
1212                 err = ENODEV;
1213                 goto error;
1214 #endif
1215         }
1216         if (config->devx) {
1217                 uint32_t reg[MLX5_ST_SZ_DW(register_mtutc)];
1218
1219                 err = config->hca_attr.access_register_user ?
1220                         mlx5_devx_cmd_register_read
1221                                 (sh->ctx, MLX5_REGISTER_ID_MTUTC, 0,
1222                                 reg, MLX5_ST_SZ_DW(register_mtutc)) : ENOTSUP;
1223                 if (!err) {
1224                         uint32_t ts_mode;
1225
1226                         /* MTUTC register is read successfully. */
1227                         ts_mode = MLX5_GET(register_mtutc, reg,
1228                                            time_stamp_mode);
1229                         if (ts_mode == MLX5_MTUTC_TIMESTAMP_MODE_REAL_TIME)
1230                                 config->rt_timestamp = 1;
1231                 } else {
1232                         /* Kernel does not support register reading. */
1233                         if (config->hca_attr.dev_freq_khz ==
1234                                                  (NS_PER_S / MS_PER_S))
1235                                 config->rt_timestamp = 1;
1236                 }
1237         }
1238         /*
1239          * If HW has bug working with tunnel packet decapsulation and
1240          * scatter FCS, and decapsulation is needed, clear the hw_fcs_strip
1241          * bit. Then DEV_RX_OFFLOAD_KEEP_CRC bit will not be set anymore.
1242          */
1243         if (config->hca_attr.scatter_fcs_w_decap_disable && config->decap_en)
1244                 config->hw_fcs_strip = 0;
1245         DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported",
1246                 (config->hw_fcs_strip ? "" : "not "));
1247         if (config->mprq.enabled && mprq) {
1248                 if (config->mprq.stride_num_n &&
1249                     (config->mprq.stride_num_n > mprq_max_stride_num_n ||
1250                      config->mprq.stride_num_n < mprq_min_stride_num_n)) {
1251                         config->mprq.stride_num_n =
1252                                 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1253                                                 mprq_min_stride_num_n),
1254                                         mprq_max_stride_num_n);
1255                         DRV_LOG(WARNING,
1256                                 "the number of strides"
1257                                 " for Multi-Packet RQ is out of range,"
1258                                 " setting default value (%u)",
1259                                 1 << config->mprq.stride_num_n);
1260                 }
1261                 if (config->mprq.stride_size_n &&
1262                     (config->mprq.stride_size_n > mprq_max_stride_size_n ||
1263                      config->mprq.stride_size_n < mprq_min_stride_size_n)) {
1264                         config->mprq.stride_size_n =
1265                                 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_SIZE_N,
1266                                                 mprq_min_stride_size_n),
1267                                         mprq_max_stride_size_n);
1268                         DRV_LOG(WARNING,
1269                                 "the size of a stride"
1270                                 " for Multi-Packet RQ is out of range,"
1271                                 " setting default value (%u)",
1272                                 1 << config->mprq.stride_size_n);
1273                 }
1274                 config->mprq.min_stride_size_n = mprq_min_stride_size_n;
1275                 config->mprq.max_stride_size_n = mprq_max_stride_size_n;
1276         } else if (config->mprq.enabled && !mprq) {
1277                 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported");
1278                 config->mprq.enabled = 0;
1279         }
1280         if (config->max_dump_files_num == 0)
1281                 config->max_dump_files_num = 128;
1282         eth_dev = rte_eth_dev_allocate(name);
1283         if (eth_dev == NULL) {
1284                 DRV_LOG(ERR, "can not allocate rte ethdev");
1285                 err = ENOMEM;
1286                 goto error;
1287         }
1288         if (priv->representor) {
1289                 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
1290                 eth_dev->data->representor_id = priv->representor_id;
1291         }
1292         /*
1293          * Store associated network device interface index. This index
1294          * is permanent throughout the lifetime of device. So, we may store
1295          * the ifindex here and use the cached value further.
1296          */
1297         MLX5_ASSERT(spawn->ifindex);
1298         priv->if_index = spawn->ifindex;
1299         if (priv->pf_bond >= 0 && priv->master) {
1300                 /* Get bond interface info */
1301                 err = mlx5_sysfs_bond_info(priv->if_index,
1302                                      &priv->bond_ifindex,
1303                                      priv->bond_name);
1304                 if (err)
1305                         DRV_LOG(ERR, "unable to get bond info: %s",
1306                                 strerror(rte_errno));
1307                 else
1308                         DRV_LOG(INFO, "PF device %u, bond device %u(%s)",
1309                                 priv->if_index, priv->bond_ifindex,
1310                                 priv->bond_name);
1311         }
1312         eth_dev->data->dev_private = priv;
1313         priv->dev_data = eth_dev->data;
1314         eth_dev->data->mac_addrs = priv->mac;
1315         eth_dev->device = dpdk_dev;
1316         eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1317         /* Configure the first MAC address by default. */
1318         if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) {
1319                 DRV_LOG(ERR,
1320                         "port %u cannot get MAC address, is mlx5_en"
1321                         " loaded? (errno: %s)",
1322                         eth_dev->data->port_id, strerror(rte_errno));
1323                 err = ENODEV;
1324                 goto error;
1325         }
1326         DRV_LOG(INFO,
1327                 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1328                 eth_dev->data->port_id,
1329                 mac.addr_bytes[0], mac.addr_bytes[1],
1330                 mac.addr_bytes[2], mac.addr_bytes[3],
1331                 mac.addr_bytes[4], mac.addr_bytes[5]);
1332 #ifdef RTE_LIBRTE_MLX5_DEBUG
1333         {
1334                 char ifname[IF_NAMESIZE];
1335
1336                 if (mlx5_get_ifname(eth_dev, &ifname) == 0)
1337                         DRV_LOG(DEBUG, "port %u ifname is \"%s\"",
1338                                 eth_dev->data->port_id, ifname);
1339                 else
1340                         DRV_LOG(DEBUG, "port %u ifname is unknown",
1341                                 eth_dev->data->port_id);
1342         }
1343 #endif
1344         /* Get actual MTU if possible. */
1345         err = mlx5_get_mtu(eth_dev, &priv->mtu);
1346         if (err) {
1347                 err = rte_errno;
1348                 goto error;
1349         }
1350         DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id,
1351                 priv->mtu);
1352         /* Initialize burst functions to prevent crashes before link-up. */
1353         eth_dev->rx_pkt_burst = removed_rx_burst;
1354         eth_dev->tx_pkt_burst = removed_tx_burst;
1355         eth_dev->dev_ops = &mlx5_os_dev_ops;
1356         eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
1357         eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
1358         eth_dev->rx_queue_count = mlx5_rx_queue_count;
1359         /* Register MAC address. */
1360         claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
1361         if (config->vf && config->vf_nl_en)
1362                 mlx5_nl_mac_addr_sync(priv->nl_socket_route,
1363                                       mlx5_ifindex(eth_dev),
1364                                       eth_dev->data->mac_addrs,
1365                                       MLX5_MAX_MAC_ADDRESSES);
1366         priv->flows = 0;
1367         priv->ctrl_flows = 0;
1368         rte_spinlock_init(&priv->flow_list_lock);
1369         TAILQ_INIT(&priv->flow_meters);
1370         TAILQ_INIT(&priv->flow_meter_profiles);
1371         /* Hint libmlx5 to use PMD allocator for data plane resources */
1372         mlx5_glue->dv_set_context_attr(sh->ctx,
1373                         MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
1374                         (void *)((uintptr_t)&(struct mlx5dv_ctx_allocators){
1375                                 .alloc = &mlx5_alloc_verbs_buf,
1376                                 .free = &mlx5_free_verbs_buf,
1377                                 .data = priv,
1378                         }));
1379         /* Bring Ethernet device up. */
1380         DRV_LOG(DEBUG, "port %u forcing Ethernet interface up",
1381                 eth_dev->data->port_id);
1382         mlx5_set_link_up(eth_dev);
1383         /*
1384          * Even though the interrupt handler is not installed yet,
1385          * interrupts will still trigger on the async_fd from
1386          * Verbs context returned by ibv_open_device().
1387          */
1388         mlx5_link_update(eth_dev, 0);
1389 #ifdef HAVE_MLX5DV_DR_ESWITCH
1390         if (!(config->hca_attr.eswitch_manager && config->dv_flow_en &&
1391               (switch_info->representor || switch_info->master)))
1392                 config->dv_esw_en = 0;
1393 #else
1394         config->dv_esw_en = 0;
1395 #endif
1396         /* Detect minimal data bytes to inline. */
1397         mlx5_set_min_inline(spawn, config);
1398         /* Store device configuration on private structure. */
1399         priv->config = *config;
1400         /* Create context for virtual machine VLAN workaround. */
1401         priv->vmwa_context = mlx5_vlan_vmwa_init(eth_dev, spawn->ifindex);
1402         if (config->dv_flow_en) {
1403                 err = mlx5_alloc_shared_dr(priv);
1404                 if (err)
1405                         goto error;
1406         }
1407         if (config->devx && config->dv_flow_en && config->dest_tir) {
1408                 priv->obj_ops = devx_obj_ops;
1409                 priv->obj_ops.drop_action_create =
1410                                                 ibv_obj_ops.drop_action_create;
1411                 priv->obj_ops.drop_action_destroy =
1412                                                 ibv_obj_ops.drop_action_destroy;
1413 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1414                 priv->obj_ops.txq_obj_modify = ibv_obj_ops.txq_obj_modify;
1415 #else
1416                 if (config->dv_esw_en)
1417                         priv->obj_ops.txq_obj_modify =
1418                                                 ibv_obj_ops.txq_obj_modify;
1419 #endif
1420                 /* Use specific wrappers for Tx object. */
1421                 priv->obj_ops.txq_obj_new = mlx5_os_txq_obj_new;
1422                 priv->obj_ops.txq_obj_release = mlx5_os_txq_obj_release;
1423
1424         } else {
1425                 priv->obj_ops = ibv_obj_ops;
1426         }
1427         priv->drop_queue.hrxq = mlx5_drop_action_create(eth_dev);
1428         if (!priv->drop_queue.hrxq)
1429                 goto error;
1430         /* Supported Verbs flow priority number detection. */
1431         err = mlx5_flow_discover_priorities(eth_dev);
1432         if (err < 0) {
1433                 err = -err;
1434                 goto error;
1435         }
1436         priv->config.flow_prio = err;
1437         if (!priv->config.dv_esw_en &&
1438             priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1439                 DRV_LOG(WARNING, "metadata mode %u is not supported "
1440                                  "(no E-Switch)", priv->config.dv_xmeta_en);
1441                 priv->config.dv_xmeta_en = MLX5_XMETA_MODE_LEGACY;
1442         }
1443         mlx5_set_metadata_mask(eth_dev);
1444         if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1445             !priv->sh->dv_regc0_mask) {
1446                 DRV_LOG(ERR, "metadata mode %u is not supported "
1447                              "(no metadata reg_c[0] is available)",
1448                              priv->config.dv_xmeta_en);
1449                         err = ENOTSUP;
1450                         goto error;
1451         }
1452         /* Query availability of metadata reg_c's. */
1453         err = mlx5_flow_discover_mreg_c(eth_dev);
1454         if (err < 0) {
1455                 err = -err;
1456                 goto error;
1457         }
1458         if (!mlx5_flow_ext_mreg_supported(eth_dev)) {
1459                 DRV_LOG(DEBUG,
1460                         "port %u extensive metadata register is not supported",
1461                         eth_dev->data->port_id);
1462                 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1463                         DRV_LOG(ERR, "metadata mode %u is not supported "
1464                                      "(no metadata registers available)",
1465                                      priv->config.dv_xmeta_en);
1466                         err = ENOTSUP;
1467                         goto error;
1468                 }
1469         }
1470         if (priv->config.dv_flow_en &&
1471             priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1472             mlx5_flow_ext_mreg_supported(eth_dev) &&
1473             priv->sh->dv_regc0_mask) {
1474                 priv->mreg_cp_tbl = mlx5_hlist_create(MLX5_FLOW_MREG_HNAME,
1475                                                       MLX5_FLOW_MREG_HTABLE_SZ);
1476                 if (!priv->mreg_cp_tbl) {
1477                         err = ENOMEM;
1478                         goto error;
1479                 }
1480         }
1481         mlx5_flow_counter_mode_config(eth_dev);
1482         return eth_dev;
1483 error:
1484         if (priv) {
1485                 if (priv->mreg_cp_tbl)
1486                         mlx5_hlist_destroy(priv->mreg_cp_tbl, NULL, NULL);
1487                 if (priv->sh)
1488                         mlx5_os_free_shared_dr(priv);
1489                 if (priv->nl_socket_route >= 0)
1490                         close(priv->nl_socket_route);
1491                 if (priv->nl_socket_rdma >= 0)
1492                         close(priv->nl_socket_rdma);
1493                 if (priv->vmwa_context)
1494                         mlx5_vlan_vmwa_exit(priv->vmwa_context);
1495                 if (eth_dev && priv->drop_queue.hrxq)
1496                         mlx5_drop_action_destroy(eth_dev);
1497                 if (own_domain_id)
1498                         claim_zero(rte_eth_switch_domain_free(priv->domain_id));
1499                 mlx5_free(priv);
1500                 if (eth_dev != NULL)
1501                         eth_dev->data->dev_private = NULL;
1502         }
1503         if (eth_dev != NULL) {
1504                 /* mac_addrs must not be freed alone because part of
1505                  * dev_private
1506                  **/
1507                 eth_dev->data->mac_addrs = NULL;
1508                 rte_eth_dev_release_port(eth_dev);
1509         }
1510         if (sh)
1511                 mlx5_free_shared_dev_ctx(sh);
1512         MLX5_ASSERT(err > 0);
1513         rte_errno = err;
1514         return NULL;
1515 }
1516
1517 /**
1518  * Comparison callback to sort device data.
1519  *
1520  * This is meant to be used with qsort().
1521  *
1522  * @param a[in]
1523  *   Pointer to pointer to first data object.
1524  * @param b[in]
1525  *   Pointer to pointer to second data object.
1526  *
1527  * @return
1528  *   0 if both objects are equal, less than 0 if the first argument is less
1529  *   than the second, greater than 0 otherwise.
1530  */
1531 static int
1532 mlx5_dev_spawn_data_cmp(const void *a, const void *b)
1533 {
1534         const struct mlx5_switch_info *si_a =
1535                 &((const struct mlx5_dev_spawn_data *)a)->info;
1536         const struct mlx5_switch_info *si_b =
1537                 &((const struct mlx5_dev_spawn_data *)b)->info;
1538         int ret;
1539
1540         /* Master device first. */
1541         ret = si_b->master - si_a->master;
1542         if (ret)
1543                 return ret;
1544         /* Then representor devices. */
1545         ret = si_b->representor - si_a->representor;
1546         if (ret)
1547                 return ret;
1548         /* Unidentified devices come last in no specific order. */
1549         if (!si_a->representor)
1550                 return 0;
1551         /* Order representors by name. */
1552         return si_a->port_name - si_b->port_name;
1553 }
1554
1555 /**
1556  * Match PCI information for possible slaves of bonding device.
1557  *
1558  * @param[in] ibv_dev
1559  *   Pointer to Infiniband device structure.
1560  * @param[in] pci_dev
1561  *   Pointer to PCI device structure to match PCI address.
1562  * @param[in] nl_rdma
1563  *   Netlink RDMA group socket handle.
1564  *
1565  * @return
1566  *   negative value if no bonding device found, otherwise
1567  *   positive index of slave PF in bonding.
1568  */
1569 static int
1570 mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
1571                            const struct rte_pci_device *pci_dev,
1572                            int nl_rdma)
1573 {
1574         char ifname[IF_NAMESIZE + 1];
1575         unsigned int ifindex;
1576         unsigned int np, i;
1577         FILE *file = NULL;
1578         int pf = -1;
1579
1580         /*
1581          * Try to get master device name. If something goes
1582          * wrong suppose the lack of kernel support and no
1583          * bonding devices.
1584          */
1585         if (nl_rdma < 0)
1586                 return -1;
1587         if (!strstr(ibv_dev->name, "bond"))
1588                 return -1;
1589         np = mlx5_nl_portnum(nl_rdma, ibv_dev->name);
1590         if (!np)
1591                 return -1;
1592         /*
1593          * The Master device might not be on the predefined
1594          * port (not on port index 1, it is not garanted),
1595          * we have to scan all Infiniband device port and
1596          * find master.
1597          */
1598         for (i = 1; i <= np; ++i) {
1599                 /* Check whether Infiniband port is populated. */
1600                 ifindex = mlx5_nl_ifindex(nl_rdma, ibv_dev->name, i);
1601                 if (!ifindex)
1602                         continue;
1603                 if (!if_indextoname(ifindex, ifname))
1604                         continue;
1605                 /* Try to read bonding slave names from sysfs. */
1606                 MKSTR(slaves,
1607                       "/sys/class/net/%s/master/bonding/slaves", ifname);
1608                 file = fopen(slaves, "r");
1609                 if (file)
1610                         break;
1611         }
1612         if (!file)
1613                 return -1;
1614         /* Use safe format to check maximal buffer length. */
1615         MLX5_ASSERT(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE);
1616         while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) {
1617                 char tmp_str[IF_NAMESIZE + 32];
1618                 struct rte_pci_addr pci_addr;
1619                 struct mlx5_switch_info info;
1620
1621                 /* Process slave interface names in the loop. */
1622                 snprintf(tmp_str, sizeof(tmp_str),
1623                          "/sys/class/net/%s", ifname);
1624                 if (mlx5_dev_to_pci_addr(tmp_str, &pci_addr)) {
1625                         DRV_LOG(WARNING, "can not get PCI address"
1626                                          " for netdev \"%s\"", ifname);
1627                         continue;
1628                 }
1629                 if (pci_dev->addr.domain != pci_addr.domain ||
1630                     pci_dev->addr.bus != pci_addr.bus ||
1631                     pci_dev->addr.devid != pci_addr.devid ||
1632                     pci_dev->addr.function != pci_addr.function)
1633                         continue;
1634                 /* Slave interface PCI address match found. */
1635                 fclose(file);
1636                 snprintf(tmp_str, sizeof(tmp_str),
1637                          "/sys/class/net/%s/phys_port_name", ifname);
1638                 file = fopen(tmp_str, "rb");
1639                 if (!file)
1640                         break;
1641                 info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET;
1642                 if (fscanf(file, "%32s", tmp_str) == 1)
1643                         mlx5_translate_port_name(tmp_str, &info);
1644                 if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY ||
1645                     info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK)
1646                         pf = info.port_name;
1647                 break;
1648         }
1649         if (file)
1650                 fclose(file);
1651         return pf;
1652 }
1653
1654 /**
1655  * DPDK callback to register a PCI device.
1656  *
1657  * This function spawns Ethernet devices out of a given PCI device.
1658  *
1659  * @param[in] pci_drv
1660  *   PCI driver structure (mlx5_driver).
1661  * @param[in] pci_dev
1662  *   PCI device information.
1663  *
1664  * @return
1665  *   0 on success, a negative errno value otherwise and rte_errno is set.
1666  */
1667 int
1668 mlx5_os_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1669                   struct rte_pci_device *pci_dev)
1670 {
1671         struct ibv_device **ibv_list;
1672         /*
1673          * Number of found IB Devices matching with requested PCI BDF.
1674          * nd != 1 means there are multiple IB devices over the same
1675          * PCI device and we have representors and master.
1676          */
1677         unsigned int nd = 0;
1678         /*
1679          * Number of found IB device Ports. nd = 1 and np = 1..n means
1680          * we have the single multiport IB device, and there may be
1681          * representors attached to some of found ports.
1682          */
1683         unsigned int np = 0;
1684         /*
1685          * Number of DPDK ethernet devices to Spawn - either over
1686          * multiple IB devices or multiple ports of single IB device.
1687          * Actually this is the number of iterations to spawn.
1688          */
1689         unsigned int ns = 0;
1690         /*
1691          * Bonding device
1692          *   < 0 - no bonding device (single one)
1693          *  >= 0 - bonding device (value is slave PF index)
1694          */
1695         int bd = -1;
1696         struct mlx5_dev_spawn_data *list = NULL;
1697         struct mlx5_dev_config dev_config;
1698         unsigned int dev_config_vf;
1699         int ret;
1700
1701         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1702                 mlx5_pmd_socket_init();
1703         ret = mlx5_init_once();
1704         if (ret) {
1705                 DRV_LOG(ERR, "unable to init PMD global data: %s",
1706                         strerror(rte_errno));
1707                 return -rte_errno;
1708         }
1709         errno = 0;
1710         ibv_list = mlx5_glue->get_device_list(&ret);
1711         if (!ibv_list) {
1712                 rte_errno = errno ? errno : ENOSYS;
1713                 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?");
1714                 return -rte_errno;
1715         }
1716         /*
1717          * First scan the list of all Infiniband devices to find
1718          * matching ones, gathering into the list.
1719          */
1720         struct ibv_device *ibv_match[ret + 1];
1721         int nl_route = mlx5_nl_init(NETLINK_ROUTE);
1722         int nl_rdma = mlx5_nl_init(NETLINK_RDMA);
1723         unsigned int i;
1724
1725         while (ret-- > 0) {
1726                 struct rte_pci_addr pci_addr;
1727
1728                 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
1729                 bd = mlx5_device_bond_pci_match
1730                                 (ibv_list[ret], pci_dev, nl_rdma);
1731                 if (bd >= 0) {
1732                         /*
1733                          * Bonding device detected. Only one match is allowed,
1734                          * the bonding is supported over multi-port IB device,
1735                          * there should be no matches on representor PCI
1736                          * functions or non VF LAG bonding devices with
1737                          * specified address.
1738                          */
1739                         if (nd) {
1740                                 DRV_LOG(ERR,
1741                                         "multiple PCI match on bonding device"
1742                                         "\"%s\" found", ibv_list[ret]->name);
1743                                 rte_errno = ENOENT;
1744                                 ret = -rte_errno;
1745                                 goto exit;
1746                         }
1747                         DRV_LOG(INFO, "PCI information matches for"
1748                                       " slave %d bonding device \"%s\"",
1749                                       bd, ibv_list[ret]->name);
1750                         ibv_match[nd++] = ibv_list[ret];
1751                         break;
1752                 }
1753                 if (mlx5_dev_to_pci_addr
1754                         (ibv_list[ret]->ibdev_path, &pci_addr))
1755                         continue;
1756                 if (pci_dev->addr.domain != pci_addr.domain ||
1757                     pci_dev->addr.bus != pci_addr.bus ||
1758                     pci_dev->addr.devid != pci_addr.devid ||
1759                     pci_dev->addr.function != pci_addr.function)
1760                         continue;
1761                 DRV_LOG(INFO, "PCI information matches for device \"%s\"",
1762                         ibv_list[ret]->name);
1763                 ibv_match[nd++] = ibv_list[ret];
1764         }
1765         ibv_match[nd] = NULL;
1766         if (!nd) {
1767                 /* No device matches, just complain and bail out. */
1768                 DRV_LOG(WARNING,
1769                         "no Verbs device matches PCI device " PCI_PRI_FMT ","
1770                         " are kernel drivers loaded?",
1771                         pci_dev->addr.domain, pci_dev->addr.bus,
1772                         pci_dev->addr.devid, pci_dev->addr.function);
1773                 rte_errno = ENOENT;
1774                 ret = -rte_errno;
1775                 goto exit;
1776         }
1777         if (nd == 1) {
1778                 /*
1779                  * Found single matching device may have multiple ports.
1780                  * Each port may be representor, we have to check the port
1781                  * number and check the representors existence.
1782                  */
1783                 if (nl_rdma >= 0)
1784                         np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name);
1785                 if (!np)
1786                         DRV_LOG(WARNING, "can not get IB device \"%s\""
1787                                          " ports number", ibv_match[0]->name);
1788                 if (bd >= 0 && !np) {
1789                         DRV_LOG(ERR, "can not get ports"
1790                                      " for bonding device");
1791                         rte_errno = ENOENT;
1792                         ret = -rte_errno;
1793                         goto exit;
1794                 }
1795         }
1796 #ifndef HAVE_MLX5DV_DR_DEVX_PORT
1797         if (bd >= 0) {
1798                 /*
1799                  * This may happen if there is VF LAG kernel support and
1800                  * application is compiled with older rdma_core library.
1801                  */
1802                 DRV_LOG(ERR,
1803                         "No kernel/verbs support for VF LAG bonding found.");
1804                 rte_errno = ENOTSUP;
1805                 ret = -rte_errno;
1806                 goto exit;
1807         }
1808 #endif
1809         /*
1810          * Now we can determine the maximal
1811          * amount of devices to be spawned.
1812          */
1813         list = mlx5_malloc(MLX5_MEM_ZERO,
1814                            sizeof(struct mlx5_dev_spawn_data) *
1815                            (np ? np : nd),
1816                            RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
1817         if (!list) {
1818                 DRV_LOG(ERR, "spawn data array allocation failure");
1819                 rte_errno = ENOMEM;
1820                 ret = -rte_errno;
1821                 goto exit;
1822         }
1823         if (bd >= 0 || np > 1) {
1824                 /*
1825                  * Single IB device with multiple ports found,
1826                  * it may be E-Switch master device and representors.
1827                  * We have to perform identification through the ports.
1828                  */
1829                 MLX5_ASSERT(nl_rdma >= 0);
1830                 MLX5_ASSERT(ns == 0);
1831                 MLX5_ASSERT(nd == 1);
1832                 MLX5_ASSERT(np);
1833                 for (i = 1; i <= np; ++i) {
1834                         list[ns].max_port = np;
1835                         list[ns].phys_port = i;
1836                         list[ns].phys_dev = ibv_match[0];
1837                         list[ns].eth_dev = NULL;
1838                         list[ns].pci_dev = pci_dev;
1839                         list[ns].pf_bond = bd;
1840                         list[ns].ifindex = mlx5_nl_ifindex
1841                                 (nl_rdma,
1842                                 mlx5_os_get_dev_device_name
1843                                                 (list[ns].phys_dev), i);
1844                         if (!list[ns].ifindex) {
1845                                 /*
1846                                  * No network interface index found for the
1847                                  * specified port, it means there is no
1848                                  * representor on this port. It's OK,
1849                                  * there can be disabled ports, for example
1850                                  * if sriov_numvfs < sriov_totalvfs.
1851                                  */
1852                                 continue;
1853                         }
1854                         ret = -1;
1855                         if (nl_route >= 0)
1856                                 ret = mlx5_nl_switch_info
1857                                                (nl_route,
1858                                                 list[ns].ifindex,
1859                                                 &list[ns].info);
1860                         if (ret || (!list[ns].info.representor &&
1861                                     !list[ns].info.master)) {
1862                                 /*
1863                                  * We failed to recognize representors with
1864                                  * Netlink, let's try to perform the task
1865                                  * with sysfs.
1866                                  */
1867                                 ret =  mlx5_sysfs_switch_info
1868                                                 (list[ns].ifindex,
1869                                                  &list[ns].info);
1870                         }
1871                         if (!ret && bd >= 0) {
1872                                 switch (list[ns].info.name_type) {
1873                                 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1874                                         if (list[ns].info.port_name == bd)
1875                                                 ns++;
1876                                         break;
1877                                 case MLX5_PHYS_PORT_NAME_TYPE_PFHPF:
1878                                         /* Fallthrough */
1879                                 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1880                                         if (list[ns].info.pf_num == bd)
1881                                                 ns++;
1882                                         break;
1883                                 default:
1884                                         break;
1885                                 }
1886                                 continue;
1887                         }
1888                         if (!ret && (list[ns].info.representor ^
1889                                      list[ns].info.master))
1890                                 ns++;
1891                 }
1892                 if (!ns) {
1893                         DRV_LOG(ERR,
1894                                 "unable to recognize master/representors"
1895                                 " on the IB device with multiple ports");
1896                         rte_errno = ENOENT;
1897                         ret = -rte_errno;
1898                         goto exit;
1899                 }
1900         } else {
1901                 /*
1902                  * The existence of several matching entries (nd > 1) means
1903                  * port representors have been instantiated. No existing Verbs
1904                  * call nor sysfs entries can tell them apart, this can only
1905                  * be done through Netlink calls assuming kernel drivers are
1906                  * recent enough to support them.
1907                  *
1908                  * In the event of identification failure through Netlink,
1909                  * try again through sysfs, then:
1910                  *
1911                  * 1. A single IB device matches (nd == 1) with single
1912                  *    port (np=0/1) and is not a representor, assume
1913                  *    no switch support.
1914                  *
1915                  * 2. Otherwise no safe assumptions can be made;
1916                  *    complain louder and bail out.
1917                  */
1918                 for (i = 0; i != nd; ++i) {
1919                         memset(&list[ns].info, 0, sizeof(list[ns].info));
1920                         list[ns].max_port = 1;
1921                         list[ns].phys_port = 1;
1922                         list[ns].phys_dev = ibv_match[i];
1923                         list[ns].eth_dev = NULL;
1924                         list[ns].pci_dev = pci_dev;
1925                         list[ns].pf_bond = -1;
1926                         list[ns].ifindex = 0;
1927                         if (nl_rdma >= 0)
1928                                 list[ns].ifindex = mlx5_nl_ifindex
1929                                 (nl_rdma,
1930                                 mlx5_os_get_dev_device_name
1931                                                 (list[ns].phys_dev), 1);
1932                         if (!list[ns].ifindex) {
1933                                 char ifname[IF_NAMESIZE];
1934
1935                                 /*
1936                                  * Netlink failed, it may happen with old
1937                                  * ib_core kernel driver (before 4.16).
1938                                  * We can assume there is old driver because
1939                                  * here we are processing single ports IB
1940                                  * devices. Let's try sysfs to retrieve
1941                                  * the ifindex. The method works for
1942                                  * master device only.
1943                                  */
1944                                 if (nd > 1) {
1945                                         /*
1946                                          * Multiple devices found, assume
1947                                          * representors, can not distinguish
1948                                          * master/representor and retrieve
1949                                          * ifindex via sysfs.
1950                                          */
1951                                         continue;
1952                                 }
1953                                 ret = mlx5_get_ifname_sysfs
1954                                         (ibv_match[i]->ibdev_path, ifname);
1955                                 if (!ret)
1956                                         list[ns].ifindex =
1957                                                 if_nametoindex(ifname);
1958                                 if (!list[ns].ifindex) {
1959                                         /*
1960                                          * No network interface index found
1961                                          * for the specified device, it means
1962                                          * there it is neither representor
1963                                          * nor master.
1964                                          */
1965                                         continue;
1966                                 }
1967                         }
1968                         ret = -1;
1969                         if (nl_route >= 0)
1970                                 ret = mlx5_nl_switch_info
1971                                                (nl_route,
1972                                                 list[ns].ifindex,
1973                                                 &list[ns].info);
1974                         if (ret || (!list[ns].info.representor &&
1975                                     !list[ns].info.master)) {
1976                                 /*
1977                                  * We failed to recognize representors with
1978                                  * Netlink, let's try to perform the task
1979                                  * with sysfs.
1980                                  */
1981                                 ret =  mlx5_sysfs_switch_info
1982                                                 (list[ns].ifindex,
1983                                                  &list[ns].info);
1984                         }
1985                         if (!ret && (list[ns].info.representor ^
1986                                      list[ns].info.master)) {
1987                                 ns++;
1988                         } else if ((nd == 1) &&
1989                                    !list[ns].info.representor &&
1990                                    !list[ns].info.master) {
1991                                 /*
1992                                  * Single IB device with
1993                                  * one physical port and
1994                                  * attached network device.
1995                                  * May be SRIOV is not enabled
1996                                  * or there is no representors.
1997                                  */
1998                                 DRV_LOG(INFO, "no E-Switch support detected");
1999                                 ns++;
2000                                 break;
2001                         }
2002                 }
2003                 if (!ns) {
2004                         DRV_LOG(ERR,
2005                                 "unable to recognize master/representors"
2006                                 " on the multiple IB devices");
2007                         rte_errno = ENOENT;
2008                         ret = -rte_errno;
2009                         goto exit;
2010                 }
2011         }
2012         MLX5_ASSERT(ns);
2013         /*
2014          * Sort list to probe devices in natural order for users convenience
2015          * (i.e. master first, then representors from lowest to highest ID).
2016          */
2017         qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp);
2018         /* Device specific configuration. */
2019         switch (pci_dev->id.device_id) {
2020         case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF:
2021         case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF:
2022         case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
2023         case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
2024         case PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF:
2025         case PCI_DEVICE_ID_MELLANOX_CONNECTX6VF:
2026         case PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF:
2027                 dev_config_vf = 1;
2028                 break;
2029         default:
2030                 dev_config_vf = 0;
2031                 break;
2032         }
2033         for (i = 0; i != ns; ++i) {
2034                 uint32_t restore;
2035
2036                 /* Default configuration. */
2037                 memset(&dev_config, 0, sizeof(struct mlx5_dev_config));
2038                 dev_config.vf = dev_config_vf;
2039                 dev_config.mps = MLX5_ARG_UNSET;
2040                 dev_config.dbnc = MLX5_ARG_UNSET;
2041                 dev_config.rx_vec_en = 1;
2042                 dev_config.txq_inline_max = MLX5_ARG_UNSET;
2043                 dev_config.txq_inline_min = MLX5_ARG_UNSET;
2044                 dev_config.txq_inline_mpw = MLX5_ARG_UNSET;
2045                 dev_config.txqs_inline = MLX5_ARG_UNSET;
2046                 dev_config.vf_nl_en = 1;
2047                 dev_config.mr_ext_memseg_en = 1;
2048                 dev_config.mprq.max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN;
2049                 dev_config.mprq.min_rxqs_num = MLX5_MPRQ_MIN_RXQS;
2050                 dev_config.dv_esw_en = 1;
2051                 dev_config.dv_flow_en = 1;
2052                 dev_config.decap_en = 1;
2053                 dev_config.log_hp_size = MLX5_ARG_UNSET;
2054                 list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device,
2055                                                  &list[i],
2056                                                  &dev_config);
2057                 if (!list[i].eth_dev) {
2058                         if (rte_errno != EBUSY && rte_errno != EEXIST)
2059                                 break;
2060                         /* Device is disabled or already spawned. Ignore it. */
2061                         continue;
2062                 }
2063                 restore = list[i].eth_dev->data->dev_flags;
2064                 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev);
2065                 /* Restore non-PCI flags cleared by the above call. */
2066                 list[i].eth_dev->data->dev_flags |= restore;
2067                 rte_eth_dev_probing_finish(list[i].eth_dev);
2068         }
2069         if (i != ns) {
2070                 DRV_LOG(ERR,
2071                         "probe of PCI device " PCI_PRI_FMT " aborted after"
2072                         " encountering an error: %s",
2073                         pci_dev->addr.domain, pci_dev->addr.bus,
2074                         pci_dev->addr.devid, pci_dev->addr.function,
2075                         strerror(rte_errno));
2076                 ret = -rte_errno;
2077                 /* Roll back. */
2078                 while (i--) {
2079                         if (!list[i].eth_dev)
2080                                 continue;
2081                         mlx5_dev_close(list[i].eth_dev);
2082                         /* mac_addrs must not be freed because in dev_private */
2083                         list[i].eth_dev->data->mac_addrs = NULL;
2084                         claim_zero(rte_eth_dev_release_port(list[i].eth_dev));
2085                 }
2086                 /* Restore original error. */
2087                 rte_errno = -ret;
2088         } else {
2089                 ret = 0;
2090         }
2091 exit:
2092         /*
2093          * Do the routine cleanup:
2094          * - close opened Netlink sockets
2095          * - free allocated spawn data array
2096          * - free the Infiniband device list
2097          */
2098         if (nl_rdma >= 0)
2099                 close(nl_rdma);
2100         if (nl_route >= 0)
2101                 close(nl_route);
2102         if (list)
2103                 mlx5_free(list);
2104         MLX5_ASSERT(ibv_list);
2105         mlx5_glue->free_device_list(ibv_list);
2106         return ret;
2107 }
2108
2109 static int
2110 mlx5_config_doorbell_mapping_env(const struct mlx5_dev_config *config)
2111 {
2112         char *env;
2113         int value;
2114
2115         MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2116         /* Get environment variable to store. */
2117         env = getenv(MLX5_SHUT_UP_BF);
2118         value = env ? !!strcmp(env, "0") : MLX5_ARG_UNSET;
2119         if (config->dbnc == MLX5_ARG_UNSET)
2120                 setenv(MLX5_SHUT_UP_BF, MLX5_SHUT_UP_BF_DEFAULT, 1);
2121         else
2122                 setenv(MLX5_SHUT_UP_BF,
2123                        config->dbnc == MLX5_TXDB_NCACHED ? "1" : "0", 1);
2124         return value;
2125 }
2126
2127 static void
2128 mlx5_restore_doorbell_mapping_env(int value)
2129 {
2130         MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2131         /* Restore the original environment variable state. */
2132         if (value == MLX5_ARG_UNSET)
2133                 unsetenv(MLX5_SHUT_UP_BF);
2134         else
2135                 setenv(MLX5_SHUT_UP_BF, value ? "1" : "0", 1);
2136 }
2137
2138 /**
2139  * Extract pdn of PD object using DV API.
2140  *
2141  * @param[in] pd
2142  *   Pointer to the verbs PD object.
2143  * @param[out] pdn
2144  *   Pointer to the PD object number variable.
2145  *
2146  * @return
2147  *   0 on success, error value otherwise.
2148  */
2149 int
2150 mlx5_os_get_pdn(void *pd, uint32_t *pdn)
2151 {
2152 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
2153         struct mlx5dv_obj obj;
2154         struct mlx5dv_pd pd_info;
2155         int ret = 0;
2156
2157         obj.pd.in = pd;
2158         obj.pd.out = &pd_info;
2159         ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_PD);
2160         if (ret) {
2161                 DRV_LOG(DEBUG, "Fail to get PD object info");
2162                 return ret;
2163         }
2164         *pdn = pd_info.pdn;
2165         return 0;
2166 #else
2167         (void)pd;
2168         (void)pdn;
2169         return -ENOTSUP;
2170 #endif /* HAVE_IBV_FLOW_DV_SUPPORT */
2171 }
2172
2173 /**
2174  * Function API to open IB device.
2175  *
2176  * This function calls the Linux glue APIs to open a device.
2177  *
2178  * @param[in] spawn
2179  *   Pointer to the IB device attributes (name, port, etc).
2180  * @param[out] config
2181  *   Pointer to device configuration structure.
2182  * @param[out] sh
2183  *   Pointer to shared context structure.
2184  *
2185  * @return
2186  *   0 on success, a positive error value otherwise.
2187  */
2188 int
2189 mlx5_os_open_device(const struct mlx5_dev_spawn_data *spawn,
2190                      const struct mlx5_dev_config *config,
2191                      struct mlx5_dev_ctx_shared *sh)
2192 {
2193         int dbmap_env;
2194         int err = 0;
2195
2196         sh->numa_node = spawn->pci_dev->device.numa_node;
2197         pthread_mutex_init(&sh->txpp.mutex, NULL);
2198         /*
2199          * Configure environment variable "MLX5_BF_SHUT_UP"
2200          * before the device creation. The rdma_core library
2201          * checks the variable at device creation and
2202          * stores the result internally.
2203          */
2204         dbmap_env = mlx5_config_doorbell_mapping_env(config);
2205         /* Try to open IB device with DV first, then usual Verbs. */
2206         errno = 0;
2207         sh->ctx = mlx5_glue->dv_open_device(spawn->phys_dev);
2208         if (sh->ctx) {
2209                 sh->devx = 1;
2210                 DRV_LOG(DEBUG, "DevX is supported");
2211                 /* The device is created, no need for environment. */
2212                 mlx5_restore_doorbell_mapping_env(dbmap_env);
2213         } else {
2214                 /* The environment variable is still configured. */
2215                 sh->ctx = mlx5_glue->open_device(spawn->phys_dev);
2216                 err = errno ? errno : ENODEV;
2217                 /*
2218                  * The environment variable is not needed anymore,
2219                  * all device creation attempts are completed.
2220                  */
2221                 mlx5_restore_doorbell_mapping_env(dbmap_env);
2222                 if (!sh->ctx)
2223                         return err;
2224                 DRV_LOG(DEBUG, "DevX is NOT supported");
2225                 err = 0;
2226         }
2227         return err;
2228 }
2229
2230 /**
2231  * Install shared asynchronous device events handler.
2232  * This function is implemented to support event sharing
2233  * between multiple ports of single IB device.
2234  *
2235  * @param sh
2236  *   Pointer to mlx5_dev_ctx_shared object.
2237  */
2238 void
2239 mlx5_os_dev_shared_handler_install(struct mlx5_dev_ctx_shared *sh)
2240 {
2241         int ret;
2242         int flags;
2243
2244         sh->intr_handle.fd = -1;
2245         flags = fcntl(((struct ibv_context *)sh->ctx)->async_fd, F_GETFL);
2246         ret = fcntl(((struct ibv_context *)sh->ctx)->async_fd,
2247                     F_SETFL, flags | O_NONBLOCK);
2248         if (ret) {
2249                 DRV_LOG(INFO, "failed to change file descriptor async event"
2250                         " queue");
2251         } else {
2252                 sh->intr_handle.fd = ((struct ibv_context *)sh->ctx)->async_fd;
2253                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
2254                 if (rte_intr_callback_register(&sh->intr_handle,
2255                                         mlx5_dev_interrupt_handler, sh)) {
2256                         DRV_LOG(INFO, "Fail to install the shared interrupt.");
2257                         sh->intr_handle.fd = -1;
2258                 }
2259         }
2260         if (sh->devx) {
2261 #ifdef HAVE_IBV_DEVX_ASYNC
2262                 sh->intr_handle_devx.fd = -1;
2263                 sh->devx_comp =
2264                         (void *)mlx5_glue->devx_create_cmd_comp(sh->ctx);
2265                 struct mlx5dv_devx_cmd_comp *devx_comp = sh->devx_comp;
2266                 if (!devx_comp) {
2267                         DRV_LOG(INFO, "failed to allocate devx_comp.");
2268                         return;
2269                 }
2270                 flags = fcntl(devx_comp->fd, F_GETFL);
2271                 ret = fcntl(devx_comp->fd, F_SETFL, flags | O_NONBLOCK);
2272                 if (ret) {
2273                         DRV_LOG(INFO, "failed to change file descriptor"
2274                                 " devx comp");
2275                         return;
2276                 }
2277                 sh->intr_handle_devx.fd = devx_comp->fd;
2278                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
2279                 if (rte_intr_callback_register(&sh->intr_handle_devx,
2280                                         mlx5_dev_interrupt_handler_devx, sh)) {
2281                         DRV_LOG(INFO, "Fail to install the devx shared"
2282                                 " interrupt.");
2283                         sh->intr_handle_devx.fd = -1;
2284                 }
2285 #endif /* HAVE_IBV_DEVX_ASYNC */
2286         }
2287 }
2288
2289 /**
2290  * Uninstall shared asynchronous device events handler.
2291  * This function is implemented to support event sharing
2292  * between multiple ports of single IB device.
2293  *
2294  * @param dev
2295  *   Pointer to mlx5_dev_ctx_shared object.
2296  */
2297 void
2298 mlx5_os_dev_shared_handler_uninstall(struct mlx5_dev_ctx_shared *sh)
2299 {
2300         if (sh->intr_handle.fd >= 0)
2301                 mlx5_intr_callback_unregister(&sh->intr_handle,
2302                                               mlx5_dev_interrupt_handler, sh);
2303 #ifdef HAVE_IBV_DEVX_ASYNC
2304         if (sh->intr_handle_devx.fd >= 0)
2305                 rte_intr_callback_unregister(&sh->intr_handle_devx,
2306                                   mlx5_dev_interrupt_handler_devx, sh);
2307         if (sh->devx_comp)
2308                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
2309 #endif
2310 }
2311
2312 /**
2313  * Read statistics by a named counter.
2314  *
2315  * @param[in] priv
2316  *   Pointer to the private device data structure.
2317  * @param[in] ctr_name
2318  *   Pointer to the name of the statistic counter to read
2319  * @param[out] stat
2320  *   Pointer to read statistic value.
2321  * @return
2322  *   0 on success and stat is valud, 1 if failed to read the value
2323  *   rte_errno is set.
2324  *
2325  */
2326 int
2327 mlx5_os_read_dev_stat(struct mlx5_priv *priv, const char *ctr_name,
2328                       uint64_t *stat)
2329 {
2330         int fd;
2331
2332         if (priv->sh) {
2333                 MKSTR(path, "%s/ports/%d/hw_counters/%s",
2334                       priv->sh->ibdev_path,
2335                       priv->dev_port,
2336                       ctr_name);
2337                 fd = open(path, O_RDONLY);
2338                 /*
2339                  * in switchdev the file location is not per port
2340                  * but rather in <ibdev_path>/hw_counters/<file_name>.
2341                  */
2342                 if (fd == -1) {
2343                         MKSTR(path1, "%s/hw_counters/%s",
2344                               priv->sh->ibdev_path,
2345                               ctr_name);
2346                         fd = open(path1, O_RDONLY);
2347                 }
2348                 if (fd != -1) {
2349                         char buf[21] = {'\0'};
2350                         ssize_t n = read(fd, buf, sizeof(buf));
2351
2352                         close(fd);
2353                         if (n != -1) {
2354                                 *stat = strtoull(buf, NULL, 10);
2355                                 return 0;
2356                         }
2357                 }
2358         }
2359         *stat = 0;
2360         return 1;
2361 }
2362
2363 /**
2364  * Set the reg_mr and dereg_mr call backs
2365  *
2366  * @param reg_mr_cb[out]
2367  *   Pointer to reg_mr func
2368  * @param dereg_mr_cb[out]
2369  *   Pointer to dereg_mr func
2370  *
2371  */
2372 void
2373 mlx5_os_set_reg_mr_cb(mlx5_reg_mr_t *reg_mr_cb,
2374                       mlx5_dereg_mr_t *dereg_mr_cb)
2375 {
2376         *reg_mr_cb = mlx5_verbs_ops.reg_mr;
2377         *dereg_mr_cb = mlx5_verbs_ops.dereg_mr;
2378 }
2379
2380 /**
2381  * Remove a MAC address from device
2382  *
2383  * @param dev
2384  *   Pointer to Ethernet device structure.
2385  * @param index
2386  *   MAC address index.
2387  */
2388 void
2389 mlx5_os_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
2390 {
2391         struct mlx5_priv *priv = dev->data->dev_private;
2392         const int vf = priv->config.vf;
2393
2394         if (vf)
2395                 mlx5_nl_mac_addr_remove(priv->nl_socket_route,
2396                                         mlx5_ifindex(dev), priv->mac_own,
2397                                         &dev->data->mac_addrs[index], index);
2398 }
2399
2400 /**
2401  * Adds a MAC address to the device
2402  *
2403  * @param dev
2404  *   Pointer to Ethernet device structure.
2405  * @param mac_addr
2406  *   MAC address to register.
2407  * @param index
2408  *   MAC address index.
2409  *
2410  * @return
2411  *   0 on success, a negative errno value otherwise
2412  */
2413 int
2414 mlx5_os_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac,
2415                      uint32_t index)
2416 {
2417         struct mlx5_priv *priv = dev->data->dev_private;
2418         const int vf = priv->config.vf;
2419         int ret = 0;
2420
2421         if (vf)
2422                 ret = mlx5_nl_mac_addr_add(priv->nl_socket_route,
2423                                            mlx5_ifindex(dev), priv->mac_own,
2424                                            mac, index);
2425         return ret;
2426 }
2427
2428 /**
2429  * Modify a VF MAC address
2430  *
2431  * @param priv
2432  *   Pointer to device private data.
2433  * @param mac_addr
2434  *   MAC address to modify into.
2435  * @param iface_idx
2436  *   Net device interface index
2437  * @param vf_index
2438  *   VF index
2439  *
2440  * @return
2441  *   0 on success, a negative errno value otherwise
2442  */
2443 int
2444 mlx5_os_vf_mac_addr_modify(struct mlx5_priv *priv,
2445                            unsigned int iface_idx,
2446                            struct rte_ether_addr *mac_addr,
2447                            int vf_index)
2448 {
2449         return mlx5_nl_vf_mac_addr_modify
2450                 (priv->nl_socket_route, iface_idx, mac_addr, vf_index);
2451 }
2452
2453 /**
2454  * Set device promiscuous mode
2455  *
2456  * @param dev
2457  *   Pointer to Ethernet device structure.
2458  * @param enable
2459  *   0 - promiscuous is disabled, otherwise - enabled
2460  *
2461  * @return
2462  *   0 on success, a negative error value otherwise
2463  */
2464 int
2465 mlx5_os_set_promisc(struct rte_eth_dev *dev, int enable)
2466 {
2467         struct mlx5_priv *priv = dev->data->dev_private;
2468
2469         return mlx5_nl_promisc(priv->nl_socket_route,
2470                                mlx5_ifindex(dev), !!enable);
2471 }
2472
2473 /**
2474  * Set device promiscuous mode
2475  *
2476  * @param dev
2477  *   Pointer to Ethernet device structure.
2478  * @param enable
2479  *   0 - all multicase is disabled, otherwise - enabled
2480  *
2481  * @return
2482  *   0 on success, a negative error value otherwise
2483  */
2484 int
2485 mlx5_os_set_allmulti(struct rte_eth_dev *dev, int enable)
2486 {
2487         struct mlx5_priv *priv = dev->data->dev_private;
2488
2489         return mlx5_nl_allmulti(priv->nl_socket_route,
2490                                 mlx5_ifindex(dev), !!enable);
2491 }
2492
2493 /**
2494  * Flush device MAC addresses
2495  *
2496  * @param dev
2497  *   Pointer to Ethernet device structure.
2498  *
2499  */
2500 void
2501 mlx5_os_mac_addr_flush(struct rte_eth_dev *dev)
2502 {
2503         struct mlx5_priv *priv = dev->data->dev_private;
2504
2505         mlx5_nl_mac_addr_flush(priv->nl_socket_route, mlx5_ifindex(dev),
2506                                dev->data->mac_addrs,
2507                                MLX5_MAX_MAC_ADDRESSES, priv->mac_own);
2508 }
2509
2510 const struct eth_dev_ops mlx5_os_dev_ops = {
2511         .dev_configure = mlx5_dev_configure,
2512         .dev_start = mlx5_dev_start,
2513         .dev_stop = mlx5_dev_stop,
2514         .dev_set_link_down = mlx5_set_link_down,
2515         .dev_set_link_up = mlx5_set_link_up,
2516         .dev_close = mlx5_dev_close,
2517         .promiscuous_enable = mlx5_promiscuous_enable,
2518         .promiscuous_disable = mlx5_promiscuous_disable,
2519         .allmulticast_enable = mlx5_allmulticast_enable,
2520         .allmulticast_disable = mlx5_allmulticast_disable,
2521         .link_update = mlx5_link_update,
2522         .stats_get = mlx5_stats_get,
2523         .stats_reset = mlx5_stats_reset,
2524         .xstats_get = mlx5_xstats_get,
2525         .xstats_reset = mlx5_xstats_reset,
2526         .xstats_get_names = mlx5_xstats_get_names,
2527         .fw_version_get = mlx5_fw_version_get,
2528         .dev_infos_get = mlx5_dev_infos_get,
2529         .read_clock = mlx5_txpp_read_clock,
2530         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2531         .vlan_filter_set = mlx5_vlan_filter_set,
2532         .rx_queue_setup = mlx5_rx_queue_setup,
2533         .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2534         .tx_queue_setup = mlx5_tx_queue_setup,
2535         .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2536         .rx_queue_release = mlx5_rx_queue_release,
2537         .tx_queue_release = mlx5_tx_queue_release,
2538         .rx_queue_start = mlx5_rx_queue_start,
2539         .rx_queue_stop = mlx5_rx_queue_stop,
2540         .tx_queue_start = mlx5_tx_queue_start,
2541         .tx_queue_stop = mlx5_tx_queue_stop,
2542         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2543         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2544         .mac_addr_remove = mlx5_mac_addr_remove,
2545         .mac_addr_add = mlx5_mac_addr_add,
2546         .mac_addr_set = mlx5_mac_addr_set,
2547         .set_mc_addr_list = mlx5_set_mc_addr_list,
2548         .mtu_set = mlx5_dev_set_mtu,
2549         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2550         .vlan_offload_set = mlx5_vlan_offload_set,
2551         .reta_update = mlx5_dev_rss_reta_update,
2552         .reta_query = mlx5_dev_rss_reta_query,
2553         .rss_hash_update = mlx5_rss_hash_update,
2554         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
2555         .filter_ctrl = mlx5_dev_filter_ctrl,
2556         .rxq_info_get = mlx5_rxq_info_get,
2557         .txq_info_get = mlx5_txq_info_get,
2558         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2559         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2560         .rx_queue_intr_enable = mlx5_rx_intr_enable,
2561         .rx_queue_intr_disable = mlx5_rx_intr_disable,
2562         .is_removed = mlx5_is_removed,
2563         .udp_tunnel_port_add  = mlx5_udp_tunnel_port_add,
2564         .get_module_info = mlx5_get_module_info,
2565         .get_module_eeprom = mlx5_get_module_eeprom,
2566         .hairpin_cap_get = mlx5_hairpin_cap_get,
2567         .mtr_ops_get = mlx5_flow_meter_ops_get,
2568         .hairpin_bind = mlx5_hairpin_bind,
2569         .hairpin_unbind = mlx5_hairpin_unbind,
2570         .hairpin_get_peer_ports = mlx5_hairpin_get_peer_ports,
2571         .hairpin_queue_peer_update = mlx5_hairpin_queue_peer_update,
2572         .hairpin_queue_peer_bind = mlx5_hairpin_queue_peer_bind,
2573         .hairpin_queue_peer_unbind = mlx5_hairpin_queue_peer_unbind,
2574 };
2575
2576 /* Available operations from secondary process. */
2577 const struct eth_dev_ops mlx5_os_dev_sec_ops = {
2578         .stats_get = mlx5_stats_get,
2579         .stats_reset = mlx5_stats_reset,
2580         .xstats_get = mlx5_xstats_get,
2581         .xstats_reset = mlx5_xstats_reset,
2582         .xstats_get_names = mlx5_xstats_get_names,
2583         .fw_version_get = mlx5_fw_version_get,
2584         .dev_infos_get = mlx5_dev_infos_get,
2585         .read_clock = mlx5_txpp_read_clock,
2586         .rx_queue_start = mlx5_rx_queue_start,
2587         .rx_queue_stop = mlx5_rx_queue_stop,
2588         .tx_queue_start = mlx5_tx_queue_start,
2589         .tx_queue_stop = mlx5_tx_queue_stop,
2590         .rxq_info_get = mlx5_rxq_info_get,
2591         .txq_info_get = mlx5_txq_info_get,
2592         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2593         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2594         .get_module_info = mlx5_get_module_info,
2595         .get_module_eeprom = mlx5_get_module_eeprom,
2596 };
2597
2598 /* Available operations in flow isolated mode. */
2599 const struct eth_dev_ops mlx5_os_dev_ops_isolate = {
2600         .dev_configure = mlx5_dev_configure,
2601         .dev_start = mlx5_dev_start,
2602         .dev_stop = mlx5_dev_stop,
2603         .dev_set_link_down = mlx5_set_link_down,
2604         .dev_set_link_up = mlx5_set_link_up,
2605         .dev_close = mlx5_dev_close,
2606         .promiscuous_enable = mlx5_promiscuous_enable,
2607         .promiscuous_disable = mlx5_promiscuous_disable,
2608         .allmulticast_enable = mlx5_allmulticast_enable,
2609         .allmulticast_disable = mlx5_allmulticast_disable,
2610         .link_update = mlx5_link_update,
2611         .stats_get = mlx5_stats_get,
2612         .stats_reset = mlx5_stats_reset,
2613         .xstats_get = mlx5_xstats_get,
2614         .xstats_reset = mlx5_xstats_reset,
2615         .xstats_get_names = mlx5_xstats_get_names,
2616         .fw_version_get = mlx5_fw_version_get,
2617         .dev_infos_get = mlx5_dev_infos_get,
2618         .read_clock = mlx5_txpp_read_clock,
2619         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2620         .vlan_filter_set = mlx5_vlan_filter_set,
2621         .rx_queue_setup = mlx5_rx_queue_setup,
2622         .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2623         .tx_queue_setup = mlx5_tx_queue_setup,
2624         .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2625         .rx_queue_release = mlx5_rx_queue_release,
2626         .tx_queue_release = mlx5_tx_queue_release,
2627         .rx_queue_start = mlx5_rx_queue_start,
2628         .rx_queue_stop = mlx5_rx_queue_stop,
2629         .tx_queue_start = mlx5_tx_queue_start,
2630         .tx_queue_stop = mlx5_tx_queue_stop,
2631         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2632         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2633         .mac_addr_remove = mlx5_mac_addr_remove,
2634         .mac_addr_add = mlx5_mac_addr_add,
2635         .mac_addr_set = mlx5_mac_addr_set,
2636         .set_mc_addr_list = mlx5_set_mc_addr_list,
2637         .mtu_set = mlx5_dev_set_mtu,
2638         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2639         .vlan_offload_set = mlx5_vlan_offload_set,
2640         .filter_ctrl = mlx5_dev_filter_ctrl,
2641         .rxq_info_get = mlx5_rxq_info_get,
2642         .txq_info_get = mlx5_txq_info_get,
2643         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2644         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2645         .rx_queue_intr_enable = mlx5_rx_intr_enable,
2646         .rx_queue_intr_disable = mlx5_rx_intr_disable,
2647         .is_removed = mlx5_is_removed,
2648         .get_module_info = mlx5_get_module_info,
2649         .get_module_eeprom = mlx5_get_module_eeprom,
2650         .hairpin_cap_get = mlx5_hairpin_cap_get,
2651         .mtr_ops_get = mlx5_flow_meter_ops_get,
2652         .hairpin_bind = mlx5_hairpin_bind,
2653         .hairpin_unbind = mlx5_hairpin_unbind,
2654         .hairpin_get_peer_ports = mlx5_hairpin_get_peer_ports,
2655         .hairpin_queue_peer_update = mlx5_hairpin_queue_peer_update,
2656         .hairpin_queue_peer_bind = mlx5_hairpin_queue_peer_bind,
2657         .hairpin_queue_peer_unbind = mlx5_hairpin_queue_peer_unbind,
2658 };