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 = 0;
 230
 231         if (!sh->flow_tbls)
 232                 err = mlx5_alloc_table_hash_list(priv);
 233         else
 234                 DRV_LOG(DEBUG, "sh->flow_tbls[%p] already created, reuse\n",
 235                         (void *)sh->flow_tbls);
 236         if (err)
 237                 return err;
 238         /* Create tags hash list table. */
 239         snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name);
 240         sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE);
 241         if (!sh->tag_table) {
 242                 DRV_LOG(ERR, "tags with hash creation failed.");
 243                 err = ENOMEM;
 244                 goto error;
 245         }
 246         snprintf(s, sizeof(s), "%s_hdr_modify", sh->ibdev_name);
 247         sh->modify_cmds = mlx5_hlist_create(s, MLX5_FLOW_HDR_MODIFY_HTABLE_SZ);
 248         if (!sh->modify_cmds) {
 249                 DRV_LOG(ERR, "hdr modify hash creation failed");
 250                 err = ENOMEM;
 251                 goto error;
 252         }
 253         snprintf(s, sizeof(s), "%s_encaps_decaps", sh->ibdev_name);
 254         sh->encaps_decaps = mlx5_hlist_create(s,
 255                                               MLX5_FLOW_ENCAP_DECAP_HTABLE_SZ);
 256         if (!sh->encaps_decaps) {
 257                 DRV_LOG(ERR, "encap decap hash creation failed");
 258                 err = ENOMEM;
 259                 goto error;
 260         }
 261 #ifdef HAVE_MLX5DV_DR
 262         void *domain;
 263
 264         if (sh->dv_refcnt) {
 265                 /* Shared DV/DR structures is already initialized. */
 266                 sh->dv_refcnt++;
 267                 priv->dr_shared = 1;
 268                 return 0;
 269         }
 270         /* Reference counter is zero, we should initialize structures. */
 271         domain = mlx5_glue->dr_create_domain(sh->ctx,
 272                                              MLX5DV_DR_DOMAIN_TYPE_NIC_RX);
 273         if (!domain) {
 274                 DRV_LOG(ERR, "ingress mlx5dv_dr_create_domain failed");
 275                 err = errno;
 276                 goto error;
 277         }
 278         sh->rx_domain = domain;
 279         domain = mlx5_glue->dr_create_domain(sh->ctx,
 280                                              MLX5DV_DR_DOMAIN_TYPE_NIC_TX);
 281         if (!domain) {
 282                 DRV_LOG(ERR, "egress mlx5dv_dr_create_domain failed");
 283                 err = errno;
 284                 goto error;
 285         }
 286         pthread_mutex_init(&sh->dv_mutex, NULL);
 287         sh->tx_domain = domain;
 288 #ifdef HAVE_MLX5DV_DR_ESWITCH
 289         if (priv->config.dv_esw_en) {
 290                 domain  = mlx5_glue->dr_create_domain
 291                         (sh->ctx, MLX5DV_DR_DOMAIN_TYPE_FDB);
 292                 if (!domain) {
 293                         DRV_LOG(ERR, "FDB mlx5dv_dr_create_domain failed");
 294                         err = errno;
 295                         goto error;
 296                 }
 297                 sh->fdb_domain = domain;
 298                 sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop();
 299         }
 300 #endif
 301         if (priv->config.reclaim_mode == MLX5_RCM_AGGR) {
 302                 mlx5_glue->dr_reclaim_domain_memory(sh->rx_domain, 1);
 303                 mlx5_glue->dr_reclaim_domain_memory(sh->tx_domain, 1);
 304                 if (sh->fdb_domain)
 305                         mlx5_glue->dr_reclaim_domain_memory(sh->fdb_domain, 1);
 306         }
 307         sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan();
 308 #endif /* HAVE_MLX5DV_DR */
 309         sh->dv_refcnt++;
 310         priv->dr_shared = 1;
 311         return 0;
 312 error:
 313         /* Rollback the created objects. */
 314         if (sh->rx_domain) {
 315                 mlx5_glue->dr_destroy_domain(sh->rx_domain);
 316                 sh->rx_domain = NULL;
 317         }
 318         if (sh->tx_domain) {
 319                 mlx5_glue->dr_destroy_domain(sh->tx_domain);
 320                 sh->tx_domain = NULL;
 321         }
 322         if (sh->fdb_domain) {
 323                 mlx5_glue->dr_destroy_domain(sh->fdb_domain);
 324                 sh->fdb_domain = NULL;
 325         }
 326         if (sh->esw_drop_action) {
 327                 mlx5_glue->destroy_flow_action(sh->esw_drop_action);
 328                 sh->esw_drop_action = NULL;
 329         }
 330         if (sh->pop_vlan_action) {
 331                 mlx5_glue->destroy_flow_action(sh->pop_vlan_action);
 332                 sh->pop_vlan_action = NULL;
 333         }
 334         if (sh->encaps_decaps) {
 335                 mlx5_hlist_destroy(sh->encaps_decaps, NULL, NULL);
 336                 sh->encaps_decaps = NULL;
 337         }
 338         if (sh->modify_cmds) {
 339                 mlx5_hlist_destroy(sh->modify_cmds, NULL, NULL);
 340                 sh->modify_cmds = NULL;
 341         }
 342         if (sh->tag_table) {
 343                 /* tags should be destroyed with flow before. */
 344                 mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
 345                 sh->tag_table = NULL;
 346         }
 347         mlx5_free_table_hash_list(priv);
 348         return err;
 349 }
 350
 351 /**
 352  * Destroy DR related data within private structure.
 353  *
 354  * @param[in] priv
 355  *   Pointer to the private device data structure.
 356  */
 357 void
 358 mlx5_os_free_shared_dr(struct mlx5_priv *priv)
 359 {
 360         struct mlx5_dev_ctx_shared *sh;
 361
 362         if (!priv->dr_shared)
 363                 return;
 364         priv->dr_shared = 0;
 365         sh = priv->sh;
 366         MLX5_ASSERT(sh);
 367 #ifdef HAVE_MLX5DV_DR
 368         MLX5_ASSERT(sh->dv_refcnt);
 369         if (sh->dv_refcnt && --sh->dv_refcnt)
 370                 return;
 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->encaps_decaps) {
 396                 mlx5_hlist_destroy(sh->encaps_decaps, NULL, NULL);
 397                 sh->encaps_decaps = NULL;
 398         }
 399         if (sh->modify_cmds) {
 400                 mlx5_hlist_destroy(sh->modify_cmds, NULL, NULL);
 401                 sh->modify_cmds = NULL;
 402         }
 403         if (sh->tag_table) {
 404                 /* tags should be destroyed with flow before. */
 405                 mlx5_hlist_destroy(sh->tag_table, NULL, NULL);
 406                 sh->tag_table = NULL;
 407         }
 408         mlx5_free_table_hash_list(priv);
 409 }
 410
 411 /**
 412  * Initialize shared data between primary and secondary process.
 413  *
 414  * A memzone is reserved by primary process and secondary processes attach to
 415  * the memzone.
 416  *
 417  * @return
 418  *   0 on success, a negative errno value otherwise and rte_errno is set.
 419  */
 420 static int
 421 mlx5_init_shared_data(void)
 422 {
 423         const struct rte_memzone *mz;
 424         int ret = 0;
 425
 426         rte_spinlock_lock(&mlx5_shared_data_lock);
 427         if (mlx5_shared_data == NULL) {
 428                 if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
 429                         /* Allocate shared memory. */
 430                         mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA,
 431                                                  sizeof(*mlx5_shared_data),
 432                                                  SOCKET_ID_ANY, 0);
 433                         if (mz == NULL) {
 434                                 DRV_LOG(ERR,
 435                                         "Cannot allocate mlx5 shared data");
 436                                 ret = -rte_errno;
 437                                 goto error;
 438                         }
 439                         mlx5_shared_data = mz->addr;
 440                         memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data));
 441                         rte_spinlock_init(&mlx5_shared_data->lock);
 442                 } else {
 443                         /* Lookup allocated shared memory. */
 444                         mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA);
 445                         if (mz == NULL) {
 446                                 DRV_LOG(ERR,
 447                                         "Cannot attach mlx5 shared data");
 448                                 ret = -rte_errno;
 449                                 goto error;
 450                         }
 451                         mlx5_shared_data = mz->addr;
 452                         memset(&mlx5_local_data, 0, sizeof(mlx5_local_data));
 453                 }
 454         }
 455 error:
 456         rte_spinlock_unlock(&mlx5_shared_data_lock);
 457         return ret;
 458 }
 459
 460 /**
 461  * PMD global initialization.
 462  *
 463  * Independent from individual device, this function initializes global
 464  * per-PMD data structures distinguishing primary and secondary processes.
 465  * Hence, each initialization is called once per a process.
 466  *
 467  * @return
 468  *   0 on success, a negative errno value otherwise and rte_errno is set.
 469  */
 470 static int
 471 mlx5_init_once(void)
 472 {
 473         struct mlx5_shared_data *sd;
 474         struct mlx5_local_data *ld = &mlx5_local_data;
 475         int ret = 0;
 476
 477         if (mlx5_init_shared_data())
 478                 return -rte_errno;
 479         sd = mlx5_shared_data;
 480         MLX5_ASSERT(sd);
 481         rte_spinlock_lock(&sd->lock);
 482         switch (rte_eal_process_type()) {
 483         case RTE_PROC_PRIMARY:
 484                 if (sd->init_done)
 485                         break;
 486                 LIST_INIT(&sd->mem_event_cb_list);
 487                 rte_rwlock_init(&sd->mem_event_rwlock);
 488                 rte_mem_event_callback_register("MLX5_MEM_EVENT_CB",
 489                                                 mlx5_mr_mem_event_cb, NULL);
 490                 ret = mlx5_mp_init_primary(MLX5_MP_NAME,
 491                                            mlx5_mp_os_primary_handle);
 492                 if (ret)
 493                         goto out;
 494                 sd->init_done = true;
 495                 break;
 496         case RTE_PROC_SECONDARY:
 497                 if (ld->init_done)
 498                         break;
 499                 ret = mlx5_mp_init_secondary(MLX5_MP_NAME,
 500                                              mlx5_mp_os_secondary_handle);
 501                 if (ret)
 502                         goto out;
 503                 ++sd->secondary_cnt;
 504                 ld->init_done = true;
 505                 break;
 506         default:
 507                 break;
 508         }
 509 out:
 510         rte_spinlock_unlock(&sd->lock);
 511         return ret;
 512 }
 513
 514 /**
 515  * Create the Tx queue DevX/Verbs object.
 516  *
 517  * @param dev
 518  *   Pointer to Ethernet device.
 519  * @param idx
 520  *   Queue index in DPDK Tx queue array.
 521  *
 522  * @return
 523  *   0 on success, a negative errno value otherwise and rte_errno is set.
 524  */
 525 static int
 526 mlx5_os_txq_obj_new(struct rte_eth_dev *dev, uint16_t idx)
 527 {
 528         struct mlx5_priv *priv = dev->data->dev_private;
 529         struct mlx5_dev_config *config = &priv->config;
 530         struct mlx5_txq_data *txq_data = (*priv->txqs)[idx];
 531         struct mlx5_txq_ctrl *txq_ctrl =
 532                         container_of(txq_data, struct mlx5_txq_ctrl, txq);
 533
 534         /*
 535          * When DevX is supported and DV flow is enable, and dest tir is enable,
 536          * hairpin functions use DevX API.
 537          * When, in addition, DV E-Switch is enable and DevX uar offset is
 538          * supported, all Tx functions also use DevX API.
 539          * Otherwise, all Tx functions use Verbs API.
 540          */
 541         if (config->devx && config->dv_flow_en && config->dest_tir) {
 542                 if (txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN)
 543                         return mlx5_txq_devx_obj_new(dev, idx);
 544 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
 545                 if (config->dv_esw_en)
 546                         return mlx5_txq_devx_obj_new(dev, idx);
 547 #endif
 548         }
 549         return mlx5_txq_ibv_obj_new(dev, idx);
 550 }
 551
 552 /**
 553  * Release an Tx DevX/verbs queue object.
 554  *
 555  * @param txq_obj
 556  *   DevX/Verbs Tx queue object.
 557  */
 558 static void
 559 mlx5_os_txq_obj_release(struct mlx5_txq_obj *txq_obj)
 560 {
 561         struct mlx5_dev_config *config = &txq_obj->txq_ctrl->priv->config;
 562
 563         if (config->devx && config->dv_flow_en && config->dest_tir) {
 564 #ifdef HAVE_MLX5DV_DEVX_UAR_OFFSET
 565                 if (config->dv_esw_en) {
 566                         mlx5_txq_devx_obj_release(txq_obj);
 567                         return;
 568                 }
 569 #endif
 570                 if (txq_obj->txq_ctrl->type == MLX5_TXQ_TYPE_HAIRPIN) {
 571                         mlx5_txq_devx_obj_release(txq_obj);
 572                         return;
 573                 }
 574         }
 575         mlx5_txq_ibv_obj_release(txq_obj);
 576 }
 577
 578 /**
 579  * Spawn an Ethernet device from Verbs information.
 580  *
 581  * @param dpdk_dev
 582  *   Backing DPDK device.
 583  * @param spawn
 584  *   Verbs device parameters (name, port, switch_info) to spawn.
 585  * @param config
 586  *   Device configuration parameters.
 587  *
 588  * @return
 589  *   A valid Ethernet device object on success, NULL otherwise and rte_errno
 590  *   is set. The following errors are defined:
 591  *
 592  *   EBUSY: device is not supposed to be spawned.
 593  *   EEXIST: device is already spawned
 594  */
 595 static struct rte_eth_dev *
 596 mlx5_dev_spawn(struct rte_device *dpdk_dev,
 597                struct mlx5_dev_spawn_data *spawn,
 598                struct mlx5_dev_config *config)
 599 {
 600         const struct mlx5_switch_info *switch_info = &spawn->info;
 601         struct mlx5_dev_ctx_shared *sh = NULL;
 602         struct ibv_port_attr port_attr;
 603         struct mlx5dv_context dv_attr = { .comp_mask = 0 };
 604         struct rte_eth_dev *eth_dev = NULL;
 605         struct mlx5_priv *priv = NULL;
 606         int err = 0;
 607         unsigned int hw_padding = 0;
 608         unsigned int mps;
 609         unsigned int cqe_comp;
 610         unsigned int cqe_pad = 0;
 611         unsigned int tunnel_en = 0;
 612         unsigned int mpls_en = 0;
 613         unsigned int swp = 0;
 614         unsigned int mprq = 0;
 615         unsigned int mprq_min_stride_size_n = 0;
 616         unsigned int mprq_max_stride_size_n = 0;
 617         unsigned int mprq_min_stride_num_n = 0;
 618         unsigned int mprq_max_stride_num_n = 0;
 619         struct rte_ether_addr mac;
 620         char name[RTE_ETH_NAME_MAX_LEN];
 621         int own_domain_id = 0;
 622         uint16_t port_id;
 623         unsigned int i;
 624 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
 625         struct mlx5dv_devx_port devx_port = { .comp_mask = 0 };
 626 #endif
 627
 628         /* Determine if this port representor is supposed to be spawned. */
 629         if (switch_info->representor && dpdk_dev->devargs) {
 630                 struct rte_eth_devargs eth_da;
 631
 632                 err = rte_eth_devargs_parse(dpdk_dev->devargs->args, &eth_da);
 633                 if (err) {
 634                         rte_errno = -err;
 635                         DRV_LOG(ERR, "failed to process device arguments: %s",
 636                                 strerror(rte_errno));
 637                         return NULL;
 638                 }
 639                 for (i = 0; i < eth_da.nb_representor_ports; ++i)
 640                         if (eth_da.representor_ports[i] ==
 641                             (uint16_t)switch_info->port_name)
 642                                 break;
 643                 if (i == eth_da.nb_representor_ports) {
 644                         rte_errno = EBUSY;
 645                         return NULL;
 646                 }
 647         }
 648         /* Build device name. */
 649         if (spawn->pf_bond <  0) {
 650                 /* Single device. */
 651                 if (!switch_info->representor)
 652                         strlcpy(name, dpdk_dev->name, sizeof(name));
 653                 else
 654                         snprintf(name, sizeof(name), "%s_representor_%u",
 655                                  dpdk_dev->name, switch_info->port_name);
 656         } else {
 657                 /* Bonding device. */
 658                 if (!switch_info->representor)
 659                         snprintf(name, sizeof(name), "%s_%s",
 660                                  dpdk_dev->name,
 661                                  mlx5_os_get_dev_device_name(spawn->phys_dev));
 662                 else
 663                         snprintf(name, sizeof(name), "%s_%s_representor_%u",
 664                                  dpdk_dev->name,
 665                                  mlx5_os_get_dev_device_name(spawn->phys_dev),
 666                                  switch_info->port_name);
 667         }
 668         /* check if the device is already spawned */
 669         if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) {
 670                 rte_errno = EEXIST;
 671                 return NULL;
 672         }
 673         DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name);
 674         if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
 675                 struct mlx5_mp_id mp_id;
 676
 677                 eth_dev = rte_eth_dev_attach_secondary(name);
 678                 if (eth_dev == NULL) {
 679                         DRV_LOG(ERR, "can not attach rte ethdev");
 680                         rte_errno = ENOMEM;
 681                         return NULL;
 682                 }
 683                 eth_dev->device = dpdk_dev;
 684                 eth_dev->dev_ops = &mlx5_os_dev_sec_ops;
 685                 eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
 686                 eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
 687                 err = mlx5_proc_priv_init(eth_dev);
 688                 if (err)
 689                         return NULL;
 690                 mp_id.port_id = eth_dev->data->port_id;
 691                 strlcpy(mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
 692                 /* Receive command fd from primary process */
 693                 err = mlx5_mp_req_verbs_cmd_fd(&mp_id);
 694                 if (err < 0)
 695                         goto err_secondary;
 696                 /* Remap UAR for Tx queues. */
 697                 err = mlx5_tx_uar_init_secondary(eth_dev, err);
 698                 if (err)
 699                         goto err_secondary;
 700                 /*
 701                  * Ethdev pointer is still required as input since
 702                  * the primary device is not accessible from the
 703                  * secondary process.
 704                  */
 705                 eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev);
 706                 eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev);
 707                 return eth_dev;
 708 err_secondary:
 709                 mlx5_dev_close(eth_dev);
 710                 return NULL;
 711         }
 712         /*
 713          * Some parameters ("tx_db_nc" in particularly) are needed in
 714          * advance to create dv/verbs device context. We proceed the
 715          * devargs here to get ones, and later proceed devargs again
 716          * to override some hardware settings.
 717          */
 718         err = mlx5_args(config, dpdk_dev->devargs);
 719         if (err) {
 720                 err = rte_errno;
 721                 DRV_LOG(ERR, "failed to process device arguments: %s",
 722                         strerror(rte_errno));
 723                 goto error;
 724         }
 725         mlx5_malloc_mem_select(config->sys_mem_en);
 726         sh = mlx5_alloc_shared_dev_ctx(spawn, config);
 727         if (!sh)
 728                 return NULL;
 729         config->devx = sh->devx;
 730 #ifdef HAVE_MLX5DV_DR_ACTION_DEST_DEVX_TIR
 731         config->dest_tir = 1;
 732 #endif
 733 #ifdef HAVE_IBV_MLX5_MOD_SWP
 734         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP;
 735 #endif
 736         /*
 737          * Multi-packet send is supported by ConnectX-4 Lx PF as well
 738          * as all ConnectX-5 devices.
 739          */
 740 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 741         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS;
 742 #endif
 743 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
 744         dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ;
 745 #endif
 746         mlx5_glue->dv_query_device(sh->ctx, &dv_attr);
 747         if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) {
 748                 if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) {
 749                         DRV_LOG(DEBUG, "enhanced MPW is supported");
 750                         mps = MLX5_MPW_ENHANCED;
 751                 } else {
 752                         DRV_LOG(DEBUG, "MPW is supported");
 753                         mps = MLX5_MPW;
 754                 }
 755         } else {
 756                 DRV_LOG(DEBUG, "MPW isn't supported");
 757                 mps = MLX5_MPW_DISABLED;
 758         }
 759 #ifdef HAVE_IBV_MLX5_MOD_SWP
 760         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP)
 761                 swp = dv_attr.sw_parsing_caps.sw_parsing_offloads;
 762         DRV_LOG(DEBUG, "SWP support: %u", swp);
 763 #endif
 764         config->swp = !!swp;
 765 #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT
 766         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) {
 767                 struct mlx5dv_striding_rq_caps mprq_caps =
 768                         dv_attr.striding_rq_caps;
 769
 770                 DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d",
 771                         mprq_caps.min_single_stride_log_num_of_bytes);
 772                 DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d",
 773                         mprq_caps.max_single_stride_log_num_of_bytes);
 774                 DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d",
 775                         mprq_caps.min_single_wqe_log_num_of_strides);
 776                 DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d",
 777                         mprq_caps.max_single_wqe_log_num_of_strides);
 778                 DRV_LOG(DEBUG, "\tsupported_qpts: %d",
 779                         mprq_caps.supported_qpts);
 780                 DRV_LOG(DEBUG, "device supports Multi-Packet RQ");
 781                 mprq = 1;
 782                 mprq_min_stride_size_n =
 783                         mprq_caps.min_single_stride_log_num_of_bytes;
 784                 mprq_max_stride_size_n =
 785                         mprq_caps.max_single_stride_log_num_of_bytes;
 786                 mprq_min_stride_num_n =
 787                         mprq_caps.min_single_wqe_log_num_of_strides;
 788                 mprq_max_stride_num_n =
 789                         mprq_caps.max_single_wqe_log_num_of_strides;
 790         }
 791 #endif
 792         if (RTE_CACHE_LINE_SIZE == 128 &&
 793             !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP))
 794                 cqe_comp = 0;
 795         else
 796                 cqe_comp = 1;
 797         config->cqe_comp = cqe_comp;
 798 #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD
 799         /* Whether device supports 128B Rx CQE padding. */
 800         cqe_pad = RTE_CACHE_LINE_SIZE == 128 &&
 801                   (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD);
 802 #endif
 803 #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT
 804         if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) {
 805                 tunnel_en = ((dv_attr.tunnel_offloads_caps &
 806                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) &&
 807                              (dv_attr.tunnel_offloads_caps &
 808                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE) &&
 809                              (dv_attr.tunnel_offloads_caps &
 810                               MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GENEVE));
 811         }
 812         DRV_LOG(DEBUG, "tunnel offloading is %ssupported",
 813                 tunnel_en ? "" : "not ");
 814 #else
 815         DRV_LOG(WARNING,
 816                 "tunnel offloading disabled due to old OFED/rdma-core version");
 817 #endif
 818         config->tunnel_en = tunnel_en;
 819 #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT
 820         mpls_en = ((dv_attr.tunnel_offloads_caps &
 821                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) &&
 822                    (dv_attr.tunnel_offloads_caps &
 823                     MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP));
 824         DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported",
 825                 mpls_en ? "" : "not ");
 826 #else
 827         DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to"
 828                 " old OFED/rdma-core version or firmware configuration");
 829 #endif
 830         config->mpls_en = mpls_en;
 831         /* Check port status. */
 832         err = mlx5_glue->query_port(sh->ctx, spawn->phys_port, &port_attr);
 833         if (err) {
 834                 DRV_LOG(ERR, "port query failed: %s", strerror(err));
 835                 goto error;
 836         }
 837         if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) {
 838                 DRV_LOG(ERR, "port is not configured in Ethernet mode");
 839                 err = EINVAL;
 840                 goto error;
 841         }
 842         if (port_attr.state != IBV_PORT_ACTIVE)
 843                 DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)",
 844                         mlx5_glue->port_state_str(port_attr.state),
 845                         port_attr.state);
 846         /* Allocate private eth device data. */
 847         priv = mlx5_malloc(MLX5_MEM_ZERO | MLX5_MEM_RTE,
 848                            sizeof(*priv),
 849                            RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
 850         if (priv == NULL) {
 851                 DRV_LOG(ERR, "priv allocation failure");
 852                 err = ENOMEM;
 853                 goto error;
 854         }
 855         priv->sh = sh;
 856         priv->dev_port = spawn->phys_port;
 857         priv->pci_dev = spawn->pci_dev;
 858         priv->mtu = RTE_ETHER_MTU;
 859         priv->mp_id.port_id = port_id;
 860         strlcpy(priv->mp_id.name, MLX5_MP_NAME, RTE_MP_MAX_NAME_LEN);
 861         /* Some internal functions rely on Netlink sockets, open them now. */
 862         priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA);
 863         priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE);
 864         priv->representor = !!switch_info->representor;
 865         priv->master = !!switch_info->master;
 866         priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID;
 867         priv->vport_meta_tag = 0;
 868         priv->vport_meta_mask = 0;
 869         priv->pf_bond = spawn->pf_bond;
 870 #ifdef HAVE_MLX5DV_DR_DEVX_PORT
 871         /*
 872          * The DevX port query API is implemented. E-Switch may use
 873          * either vport or reg_c[0] metadata register to match on
 874          * vport index. The engaged part of metadata register is
 875          * defined by mask.
 876          */
 877         if (switch_info->representor || switch_info->master) {
 878                 devx_port.comp_mask = MLX5DV_DEVX_PORT_VPORT |
 879                                       MLX5DV_DEVX_PORT_MATCH_REG_C_0;
 880                 err = mlx5_glue->devx_port_query(sh->ctx, spawn->phys_port,
 881                                                  &devx_port);
 882                 if (err) {
 883                         DRV_LOG(WARNING,
 884                                 "can't query devx port %d on device %s",
 885                                 spawn->phys_port,
 886                                 mlx5_os_get_dev_device_name(spawn->phys_dev));
 887                         devx_port.comp_mask = 0;
 888                 }
 889         }
 890         if (devx_port.comp_mask & MLX5DV_DEVX_PORT_MATCH_REG_C_0) {
 891                 priv->vport_meta_tag = devx_port.reg_c_0.value;
 892                 priv->vport_meta_mask = devx_port.reg_c_0.mask;
 893                 if (!priv->vport_meta_mask) {
 894                         DRV_LOG(ERR, "vport zero mask for port %d"
 895                                      " on bonding device %s",
 896                                      spawn->phys_port,
 897                                      mlx5_os_get_dev_device_name
 898                                                         (spawn->phys_dev));
 899                         err = ENOTSUP;
 900                         goto error;
 901                 }
 902                 if (priv->vport_meta_tag & ~priv->vport_meta_mask) {
 903                         DRV_LOG(ERR, "invalid vport tag for port %d"
 904                                      " on bonding device %s",
 905                                      spawn->phys_port,
 906                                      mlx5_os_get_dev_device_name
 907                                                         (spawn->phys_dev));
 908                         err = ENOTSUP;
 909                         goto error;
 910                 }
 911         }
 912         if (devx_port.comp_mask & MLX5DV_DEVX_PORT_VPORT) {
 913                 priv->vport_id = devx_port.vport_num;
 914         } else if (spawn->pf_bond >= 0) {
 915                 DRV_LOG(ERR, "can't deduce vport index for port %d"
 916                              " on bonding device %s",
 917                              spawn->phys_port,
 918                              mlx5_os_get_dev_device_name(spawn->phys_dev));
 919                 err = ENOTSUP;
 920                 goto error;
 921         } else {
 922                 /* Suppose vport index in compatible way. */
 923                 priv->vport_id = switch_info->representor ?
 924                                  switch_info->port_name + 1 : -1;
 925         }
 926 #else
 927         /*
 928          * Kernel/rdma_core support single E-Switch per PF configurations
 929          * only and vport_id field contains the vport index for
 930          * associated VF, which is deduced from representor port name.
 931          * For example, let's have the IB device port 10, it has
 932          * attached network device eth0, which has port name attribute
 933          * pf0vf2, we can deduce the VF number as 2, and set vport index
 934          * as 3 (2+1). This assigning schema should be changed if the
 935          * multiple E-Switch instances per PF configurations or/and PCI
 936          * subfunctions are added.
 937          */
 938         priv->vport_id = switch_info->representor ?
 939                          switch_info->port_name + 1 : -1;
 940 #endif
 941         /* representor_id field keeps the unmodified VF index. */
 942         priv->representor_id = switch_info->representor ?
 943                                switch_info->port_name : -1;
 944         /*
 945          * Look for sibling devices in order to reuse their switch domain
 946          * if any, otherwise allocate one.
 947          */
 948         MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) {
 949                 const struct mlx5_priv *opriv =
 950                         rte_eth_devices[port_id].data->dev_private;
 951
 952                 if (!opriv ||
 953                     opriv->sh != priv->sh ||
 954                         opriv->domain_id ==
 955                         RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID)
 956                         continue;
 957                 priv->domain_id = opriv->domain_id;
 958                 break;
 959         }
 960         if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) {
 961                 err = rte_eth_switch_domain_alloc(&priv->domain_id);
 962                 if (err) {
 963                         err = rte_errno;
 964                         DRV_LOG(ERR, "unable to allocate switch domain: %s",
 965                                 strerror(rte_errno));
 966                         goto error;
 967                 }
 968                 own_domain_id = 1;
 969         }
 970         /* Override some values set by hardware configuration. */
 971         mlx5_args(config, dpdk_dev->devargs);
 972         err = mlx5_dev_check_sibling_config(priv, config);
 973         if (err)
 974                 goto error;
 975         config->hw_csum = !!(sh->device_attr.device_cap_flags_ex &
 976                             IBV_DEVICE_RAW_IP_CSUM);
 977         DRV_LOG(DEBUG, "checksum offloading is %ssupported",
 978                 (config->hw_csum ? "" : "not "));
 979 #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \
 980         !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45)
 981         DRV_LOG(DEBUG, "counters are not supported");
 982 #endif
 983 #if !defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_MLX5DV_DR)
 984         if (config->dv_flow_en) {
 985                 DRV_LOG(WARNING, "DV flow is not supported");
 986                 config->dv_flow_en = 0;
 987         }
 988 #endif
 989         config->ind_table_max_size =
 990                 sh->device_attr.max_rwq_indirection_table_size;
 991         /*
 992          * Remove this check once DPDK supports larger/variable
 993          * indirection tables.
 994          */
 995         if (config->ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512)
 996                 config->ind_table_max_size = ETH_RSS_RETA_SIZE_512;
 997         DRV_LOG(DEBUG, "maximum Rx indirection table size is %u",
 998                 config->ind_table_max_size);
 999         config->hw_vlan_strip = !!(sh->device_attr.raw_packet_caps &
1000                                   IBV_RAW_PACKET_CAP_CVLAN_STRIPPING);
1001         DRV_LOG(DEBUG, "VLAN stripping is %ssupported",
1002                 (config->hw_vlan_strip ? "" : "not "));
1003         config->hw_fcs_strip = !!(sh->device_attr.raw_packet_caps &
1004                                  IBV_RAW_PACKET_CAP_SCATTER_FCS);
1005 #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING)
1006         hw_padding = !!sh->device_attr.rx_pad_end_addr_align;
1007 #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING)
1008         hw_padding = !!(sh->device_attr.device_cap_flags_ex &
1009                         IBV_DEVICE_PCI_WRITE_END_PADDING);
1010 #endif
1011         if (config->hw_padding && !hw_padding) {
1012                 DRV_LOG(DEBUG, "Rx end alignment padding isn't supported");
1013                 config->hw_padding = 0;
1014         } else if (config->hw_padding) {
1015                 DRV_LOG(DEBUG, "Rx end alignment padding is enabled");
1016         }
1017         config->tso = (sh->device_attr.max_tso > 0 &&
1018                       (sh->device_attr.tso_supported_qpts &
1019                        (1 << IBV_QPT_RAW_PACKET)));
1020         if (config->tso)
1021                 config->tso_max_payload_sz = sh->device_attr.max_tso;
1022         /*
1023          * MPW is disabled by default, while the Enhanced MPW is enabled
1024          * by default.
1025          */
1026         if (config->mps == MLX5_ARG_UNSET)
1027                 config->mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED :
1028                                                           MLX5_MPW_DISABLED;
1029         else
1030                 config->mps = config->mps ? mps : MLX5_MPW_DISABLED;
1031         DRV_LOG(INFO, "%sMPS is %s",
1032                 config->mps == MLX5_MPW_ENHANCED ? "enhanced " :
1033                 config->mps == MLX5_MPW ? "legacy " : "",
1034                 config->mps != MLX5_MPW_DISABLED ? "enabled" : "disabled");
1035         if (config->cqe_comp && !cqe_comp) {
1036                 DRV_LOG(WARNING, "Rx CQE compression isn't supported");
1037                 config->cqe_comp = 0;
1038         }
1039         if (config->cqe_pad && !cqe_pad) {
1040                 DRV_LOG(WARNING, "Rx CQE padding isn't supported");
1041                 config->cqe_pad = 0;
1042         } else if (config->cqe_pad) {
1043                 DRV_LOG(INFO, "Rx CQE padding is enabled");
1044         }
1045         if (config->devx) {
1046                 priv->counter_fallback = 0;
1047                 err = mlx5_devx_cmd_query_hca_attr(sh->ctx, &config->hca_attr);
1048                 if (err) {
1049                         err = -err;
1050                         goto error;
1051                 }
1052                 if (!config->hca_attr.flow_counters_dump)
1053                         priv->counter_fallback = 1;
1054 #ifndef HAVE_IBV_DEVX_ASYNC
1055                 priv->counter_fallback = 1;
1056 #endif
1057                 if (priv->counter_fallback)
1058                         DRV_LOG(INFO, "Use fall-back DV counter management");
1059                 /* Check for LRO support. */
1060                 if (config->dest_tir && config->hca_attr.lro_cap &&
1061                     config->dv_flow_en) {
1062                         /* TBD check tunnel lro caps. */
1063                         config->lro.supported = config->hca_attr.lro_cap;
1064                         DRV_LOG(DEBUG, "Device supports LRO");
1065                         /*
1066                          * If LRO timeout is not configured by application,
1067                          * use the minimal supported value.
1068                          */
1069                         if (!config->lro.timeout)
1070                                 config->lro.timeout =
1071                                 config->hca_attr.lro_timer_supported_periods[0];
1072                         DRV_LOG(DEBUG, "LRO session timeout set to %d usec",
1073                                 config->lro.timeout);
1074                 }
1075 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER)
1076                 if (config->hca_attr.qos.sup &&
1077                     config->hca_attr.qos.srtcm_sup &&
1078                     config->dv_flow_en) {
1079                         uint8_t reg_c_mask =
1080                                 config->hca_attr.qos.flow_meter_reg_c_ids;
1081                         /*
1082                          * Meter needs two REG_C's for color match and pre-sfx
1083                          * flow match. Here get the REG_C for color match.
1084                          * REG_C_0 and REG_C_1 is reserved for metadata feature.
1085                          */
1086                         reg_c_mask &= 0xfc;
1087                         if (__builtin_popcount(reg_c_mask) < 1) {
1088                                 priv->mtr_en = 0;
1089                                 DRV_LOG(WARNING, "No available register for"
1090                                         " meter.");
1091                         } else {
1092                                 priv->mtr_color_reg = ffs(reg_c_mask) - 1 +
1093                                                       REG_C_0;
1094                                 priv->mtr_en = 1;
1095                                 priv->mtr_reg_share =
1096                                       config->hca_attr.qos.flow_meter_reg_share;
1097                                 DRV_LOG(DEBUG, "The REG_C meter uses is %d",
1098                                         priv->mtr_color_reg);
1099                         }
1100                 }
1101 #endif
1102 #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_SAMPLE)
1103                 if (config->hca_attr.log_max_ft_sampler_num > 0  &&
1104                     config->dv_flow_en) {
1105                         priv->sampler_en = 1;
1106                         DRV_LOG(DEBUG, "The Sampler enabled!\n");
1107                 } else {
1108                         priv->sampler_en = 0;
1109                         if (!config->hca_attr.log_max_ft_sampler_num)
1110                                 DRV_LOG(WARNING, "No available register for"
1111                                                 " Sampler.");
1112                         else
1113                                 DRV_LOG(DEBUG, "DV flow is not supported!\n");
1114                 }
1115 #endif
1116         }
1117         if (config->tx_pp) {
1118                 DRV_LOG(DEBUG, "Timestamp counter frequency %u kHz",
1119                         config->hca_attr.dev_freq_khz);
1120                 DRV_LOG(DEBUG, "Packet pacing is %ssupported",
1121                         config->hca_attr.qos.packet_pacing ? "" : "not ");
1122                 DRV_LOG(DEBUG, "Cross channel ops are %ssupported",
1123                         config->hca_attr.cross_channel ? "" : "not ");
1124                 DRV_LOG(DEBUG, "WQE index ignore is %ssupported",
1125                         config->hca_attr.wqe_index_ignore ? "" : "not ");
1126                 DRV_LOG(DEBUG, "Non-wire SQ feature is %ssupported",
1127                         config->hca_attr.non_wire_sq ? "" : "not ");
1128                 DRV_LOG(DEBUG, "Static WQE SQ feature is %ssupported (%d)",
1129                         config->hca_attr.log_max_static_sq_wq ? "" : "not ",
1130                         config->hca_attr.log_max_static_sq_wq);
1131                 DRV_LOG(DEBUG, "WQE rate PP mode is %ssupported",
1132                         config->hca_attr.qos.wqe_rate_pp ? "" : "not ");
1133                 if (!config->devx) {
1134                         DRV_LOG(ERR, "DevX is required for packet pacing");
1135                         err = ENODEV;
1136                         goto error;
1137                 }
1138                 if (!config->hca_attr.qos.packet_pacing) {
1139                         DRV_LOG(ERR, "Packet pacing is not supported");
1140                         err = ENODEV;
1141                         goto error;
1142                 }
1143                 if (!config->hca_attr.cross_channel) {
1144                         DRV_LOG(ERR, "Cross channel operations are"
1145                                      " required for packet pacing");
1146                         err = ENODEV;
1147                         goto error;
1148                 }
1149                 if (!config->hca_attr.wqe_index_ignore) {
1150                         DRV_LOG(ERR, "WQE index ignore feature is"
1151                                      " required for packet pacing");
1152                         err = ENODEV;
1153                         goto error;
1154                 }
1155                 if (!config->hca_attr.non_wire_sq) {
1156                         DRV_LOG(ERR, "Non-wire SQ feature is"
1157                                      " required for packet pacing");
1158                         err = ENODEV;
1159                         goto error;
1160                 }
1161                 if (!config->hca_attr.log_max_static_sq_wq) {
1162                         DRV_LOG(ERR, "Static WQE SQ feature is"
1163                                      " required for packet pacing");
1164                         err = ENODEV;
1165                         goto error;
1166                 }
1167                 if (!config->hca_attr.qos.wqe_rate_pp) {
1168                         DRV_LOG(ERR, "WQE rate mode is required"
1169                                      " for packet pacing");
1170                         err = ENODEV;
1171                         goto error;
1172                 }
1173 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1174                 DRV_LOG(ERR, "DevX does not provide UAR offset,"
1175                              " can't create queues for packet pacing");
1176                 err = ENODEV;
1177                 goto error;
1178 #endif
1179         }
1180         if (config->devx) {
1181                 uint32_t reg[MLX5_ST_SZ_DW(register_mtutc)];
1182
1183                 err = config->hca_attr.access_register_user ?
1184                         mlx5_devx_cmd_register_read
1185                                 (sh->ctx, MLX5_REGISTER_ID_MTUTC, 0,
1186                                 reg, MLX5_ST_SZ_DW(register_mtutc)) : ENOTSUP;
1187                 if (!err) {
1188                         uint32_t ts_mode;
1189
1190                         /* MTUTC register is read successfully. */
1191                         ts_mode = MLX5_GET(register_mtutc, reg,
1192                                            time_stamp_mode);
1193                         if (ts_mode == MLX5_MTUTC_TIMESTAMP_MODE_REAL_TIME)
1194                                 config->rt_timestamp = 1;
1195                 } else {
1196                         /* Kernel does not support register reading. */
1197                         if (config->hca_attr.dev_freq_khz ==
1198                                                  (NS_PER_S / MS_PER_S))
1199                                 config->rt_timestamp = 1;
1200                 }
1201         }
1202         /*
1203          * If HW has bug working with tunnel packet decapsulation and
1204          * scatter FCS, and decapsulation is needed, clear the hw_fcs_strip
1205          * bit. Then DEV_RX_OFFLOAD_KEEP_CRC bit will not be set anymore.
1206          */
1207         if (config->hca_attr.scatter_fcs_w_decap_disable && config->decap_en)
1208                 config->hw_fcs_strip = 0;
1209         DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported",
1210                 (config->hw_fcs_strip ? "" : "not "));
1211         if (config->mprq.enabled && mprq) {
1212                 if (config->mprq.stride_num_n &&
1213                     (config->mprq.stride_num_n > mprq_max_stride_num_n ||
1214                      config->mprq.stride_num_n < mprq_min_stride_num_n)) {
1215                         config->mprq.stride_num_n =
1216                                 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N,
1217                                                 mprq_min_stride_num_n),
1218                                         mprq_max_stride_num_n);
1219                         DRV_LOG(WARNING,
1220                                 "the number of strides"
1221                                 " for Multi-Packet RQ is out of range,"
1222                                 " setting default value (%u)",
1223                                 1 << config->mprq.stride_num_n);
1224                 }
1225                 if (config->mprq.stride_size_n &&
1226                     (config->mprq.stride_size_n > mprq_max_stride_size_n ||
1227                      config->mprq.stride_size_n < mprq_min_stride_size_n)) {
1228                         config->mprq.stride_size_n =
1229                                 RTE_MIN(RTE_MAX(MLX5_MPRQ_STRIDE_SIZE_N,
1230                                                 mprq_min_stride_size_n),
1231                                         mprq_max_stride_size_n);
1232                         DRV_LOG(WARNING,
1233                                 "the size of a stride"
1234                                 " for Multi-Packet RQ is out of range,"
1235                                 " setting default value (%u)",
1236                                 1 << config->mprq.stride_size_n);
1237                 }
1238                 config->mprq.min_stride_size_n = mprq_min_stride_size_n;
1239                 config->mprq.max_stride_size_n = mprq_max_stride_size_n;
1240         } else if (config->mprq.enabled && !mprq) {
1241                 DRV_LOG(WARNING, "Multi-Packet RQ isn't supported");
1242                 config->mprq.enabled = 0;
1243         }
1244         if (config->max_dump_files_num == 0)
1245                 config->max_dump_files_num = 128;
1246         eth_dev = rte_eth_dev_allocate(name);
1247         if (eth_dev == NULL) {
1248                 DRV_LOG(ERR, "can not allocate rte ethdev");
1249                 err = ENOMEM;
1250                 goto error;
1251         }
1252         if (priv->representor) {
1253                 eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR;
1254                 eth_dev->data->representor_id = priv->representor_id;
1255         }
1256         /*
1257          * Store associated network device interface index. This index
1258          * is permanent throughout the lifetime of device. So, we may store
1259          * the ifindex here and use the cached value further.
1260          */
1261         MLX5_ASSERT(spawn->ifindex);
1262         priv->if_index = spawn->ifindex;
1263         if (priv->pf_bond >= 0 && priv->master) {
1264                 /* Get bond interface info */
1265                 err = mlx5_sysfs_bond_info(priv->if_index,
1266                                      &priv->bond_ifindex,
1267                                      priv->bond_name);
1268                 if (err)
1269                         DRV_LOG(ERR, "unable to get bond info: %s",
1270                                 strerror(rte_errno));
1271                 else
1272                         DRV_LOG(INFO, "PF device %u, bond device %u(%s)",
1273                                 priv->if_index, priv->bond_ifindex,
1274                                 priv->bond_name);
1275         }
1276         eth_dev->data->dev_private = priv;
1277         priv->dev_data = eth_dev->data;
1278         eth_dev->data->mac_addrs = priv->mac;
1279         eth_dev->device = dpdk_dev;
1280         eth_dev->data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
1281         /* Configure the first MAC address by default. */
1282         if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) {
1283                 DRV_LOG(ERR,
1284                         "port %u cannot get MAC address, is mlx5_en"
1285                         " loaded? (errno: %s)",
1286                         eth_dev->data->port_id, strerror(rte_errno));
1287                 err = ENODEV;
1288                 goto error;
1289         }
1290         DRV_LOG(INFO,
1291                 "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x",
1292                 eth_dev->data->port_id,
1293                 mac.addr_bytes[0], mac.addr_bytes[1],
1294                 mac.addr_bytes[2], mac.addr_bytes[3],
1295                 mac.addr_bytes[4], mac.addr_bytes[5]);
1296 #ifdef RTE_LIBRTE_MLX5_DEBUG
1297         {
1298                 char ifname[IF_NAMESIZE];
1299
1300                 if (mlx5_get_ifname(eth_dev, &ifname) == 0)
1301                         DRV_LOG(DEBUG, "port %u ifname is \"%s\"",
1302                                 eth_dev->data->port_id, ifname);
1303                 else
1304                         DRV_LOG(DEBUG, "port %u ifname is unknown",
1305                                 eth_dev->data->port_id);
1306         }
1307 #endif
1308         /* Get actual MTU if possible. */
1309         err = mlx5_get_mtu(eth_dev, &priv->mtu);
1310         if (err) {
1311                 err = rte_errno;
1312                 goto error;
1313         }
1314         DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id,
1315                 priv->mtu);
1316         /* Initialize burst functions to prevent crashes before link-up. */
1317         eth_dev->rx_pkt_burst = removed_rx_burst;
1318         eth_dev->tx_pkt_burst = removed_tx_burst;
1319         eth_dev->dev_ops = &mlx5_os_dev_ops;
1320         eth_dev->rx_descriptor_status = mlx5_rx_descriptor_status;
1321         eth_dev->tx_descriptor_status = mlx5_tx_descriptor_status;
1322         eth_dev->rx_queue_count = mlx5_rx_queue_count;
1323         /* Register MAC address. */
1324         claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0));
1325         if (config->vf && config->vf_nl_en)
1326                 mlx5_nl_mac_addr_sync(priv->nl_socket_route,
1327                                       mlx5_ifindex(eth_dev),
1328                                       eth_dev->data->mac_addrs,
1329                                       MLX5_MAX_MAC_ADDRESSES);
1330         priv->flows = 0;
1331         priv->ctrl_flows = 0;
1332         TAILQ_INIT(&priv->flow_meters);
1333         TAILQ_INIT(&priv->flow_meter_profiles);
1334         /* Hint libmlx5 to use PMD allocator for data plane resources */
1335         mlx5_glue->dv_set_context_attr(sh->ctx,
1336                         MLX5DV_CTX_ATTR_BUF_ALLOCATORS,
1337                         (void *)((uintptr_t)&(struct mlx5dv_ctx_allocators){
1338                                 .alloc = &mlx5_alloc_verbs_buf,
1339                                 .free = &mlx5_free_verbs_buf,
1340                                 .data = priv,
1341                         }));
1342         /* Bring Ethernet device up. */
1343         DRV_LOG(DEBUG, "port %u forcing Ethernet interface up",
1344                 eth_dev->data->port_id);
1345         mlx5_set_link_up(eth_dev);
1346         /*
1347          * Even though the interrupt handler is not installed yet,
1348          * interrupts will still trigger on the async_fd from
1349          * Verbs context returned by ibv_open_device().
1350          */
1351         mlx5_link_update(eth_dev, 0);
1352 #ifdef HAVE_MLX5DV_DR_ESWITCH
1353         if (!(config->hca_attr.eswitch_manager && config->dv_flow_en &&
1354               (switch_info->representor || switch_info->master)))
1355                 config->dv_esw_en = 0;
1356 #else
1357         config->dv_esw_en = 0;
1358 #endif
1359         /* Detect minimal data bytes to inline. */
1360         mlx5_set_min_inline(spawn, config);
1361         /* Store device configuration on private structure. */
1362         priv->config = *config;
1363         /* Create context for virtual machine VLAN workaround. */
1364         priv->vmwa_context = mlx5_vlan_vmwa_init(eth_dev, spawn->ifindex);
1365         if (config->dv_flow_en) {
1366                 err = mlx5_alloc_shared_dr(priv);
1367                 if (err)
1368                         goto error;
1369                 /*
1370                  * RSS id is shared with meter flow id. Meter flow id can only
1371                  * use the 24 MSB of the register.
1372                  */
1373                 priv->qrss_id_pool = mlx5_flow_id_pool_alloc(UINT32_MAX >>
1374                                      MLX5_MTR_COLOR_BITS);
1375                 if (!priv->qrss_id_pool) {
1376                         DRV_LOG(ERR, "can't create flow id pool");
1377                         err = ENOMEM;
1378                         goto error;
1379                 }
1380         }
1381         /*
1382          * Initialize the dev_ops structure with DevX/Verbs function pointers.
1383          * When DevX is supported and both DV flow and dest tir are enabled, all
1384          * Rx functions use DevX API (except for drop that has not yet been
1385          * implemented in DevX).
1386          */
1387         if (config->devx && config->dv_flow_en && config->dest_tir) {
1388                 priv->obj_ops = devx_obj_ops;
1389                 priv->obj_ops.drop_action_create =
1390                                                 ibv_obj_ops.drop_action_create;
1391                 priv->obj_ops.drop_action_destroy =
1392                                                 ibv_obj_ops.drop_action_destroy;
1393 #ifndef HAVE_MLX5DV_DEVX_UAR_OFFSET
1394                 priv->obj_ops.txq_obj_modify = ibv_obj_ops.txq_obj_modify;
1395 #else
1396                 if (!config->dv_esw_en)
1397                         priv->obj_ops.txq_obj_modify =
1398                                                 ibv_obj_ops.txq_obj_modify;
1399 #endif
1400         } else {
1401                 priv->obj_ops = ibv_obj_ops;
1402         }
1403         /* The Tx objects are managed by a specific linux wrapper functions. */
1404         priv->obj_ops.txq_obj_new = mlx5_os_txq_obj_new;
1405         priv->obj_ops.txq_obj_release = mlx5_os_txq_obj_release;
1406         /* Supported Verbs flow priority number detection. */
1407         err = mlx5_flow_discover_priorities(eth_dev);
1408         if (err < 0) {
1409                 err = -err;
1410                 goto error;
1411         }
1412         priv->config.flow_prio = err;
1413         if (!priv->config.dv_esw_en &&
1414             priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1415                 DRV_LOG(WARNING, "metadata mode %u is not supported "
1416                                  "(no E-Switch)", priv->config.dv_xmeta_en);
1417                 priv->config.dv_xmeta_en = MLX5_XMETA_MODE_LEGACY;
1418         }
1419         mlx5_set_metadata_mask(eth_dev);
1420         if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1421             !priv->sh->dv_regc0_mask) {
1422                 DRV_LOG(ERR, "metadata mode %u is not supported "
1423                              "(no metadata reg_c[0] is available)",
1424                              priv->config.dv_xmeta_en);
1425                         err = ENOTSUP;
1426                         goto error;
1427         }
1428         /*
1429          * Allocate the buffer for flow creating, just once.
1430          * The allocation must be done before any flow creating.
1431          */
1432         mlx5_flow_alloc_intermediate(eth_dev);
1433         /* Query availability of metadata reg_c's. */
1434         err = mlx5_flow_discover_mreg_c(eth_dev);
1435         if (err < 0) {
1436                 err = -err;
1437                 goto error;
1438         }
1439         if (!mlx5_flow_ext_mreg_supported(eth_dev)) {
1440                 DRV_LOG(DEBUG,
1441                         "port %u extensive metadata register is not supported",
1442                         eth_dev->data->port_id);
1443                 if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) {
1444                         DRV_LOG(ERR, "metadata mode %u is not supported "
1445                                      "(no metadata registers available)",
1446                                      priv->config.dv_xmeta_en);
1447                         err = ENOTSUP;
1448                         goto error;
1449                 }
1450         }
1451         if (priv->config.dv_flow_en &&
1452             priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY &&
1453             mlx5_flow_ext_mreg_supported(eth_dev) &&
1454             priv->sh->dv_regc0_mask) {
1455                 priv->mreg_cp_tbl = mlx5_hlist_create(MLX5_FLOW_MREG_HNAME,
1456                                                       MLX5_FLOW_MREG_HTABLE_SZ);
1457                 if (!priv->mreg_cp_tbl) {
1458                         err = ENOMEM;
1459                         goto error;
1460                 }
1461         }
1462         return eth_dev;
1463 error:
1464         if (priv) {
1465                 if (priv->mreg_cp_tbl)
1466                         mlx5_hlist_destroy(priv->mreg_cp_tbl, NULL, NULL);
1467                 if (priv->sh)
1468                         mlx5_os_free_shared_dr(priv);
1469                 if (priv->nl_socket_route >= 0)
1470                         close(priv->nl_socket_route);
1471                 if (priv->nl_socket_rdma >= 0)
1472                         close(priv->nl_socket_rdma);
1473                 if (priv->vmwa_context)
1474                         mlx5_vlan_vmwa_exit(priv->vmwa_context);
1475                 if (priv->qrss_id_pool)
1476                         mlx5_flow_id_pool_release(priv->qrss_id_pool);
1477                 if (own_domain_id)
1478                         claim_zero(rte_eth_switch_domain_free(priv->domain_id));
1479                 mlx5_free(priv);
1480                 if (eth_dev != NULL)
1481                         eth_dev->data->dev_private = NULL;
1482         }
1483         if (eth_dev != NULL) {
1484                 /* mac_addrs must not be freed alone because part of
1485                  * dev_private
1486                  **/
1487                 eth_dev->data->mac_addrs = NULL;
1488                 rte_eth_dev_release_port(eth_dev);
1489         }
1490         if (sh)
1491                 mlx5_free_shared_dev_ctx(sh);
1492         MLX5_ASSERT(err > 0);
1493         rte_errno = err;
1494         return NULL;
1495 }
1496
1497 /**
1498  * Comparison callback to sort device data.
1499  *
1500  * This is meant to be used with qsort().
1501  *
1502  * @param a[in]
1503  *   Pointer to pointer to first data object.
1504  * @param b[in]
1505  *   Pointer to pointer to second data object.
1506  *
1507  * @return
1508  *   0 if both objects are equal, less than 0 if the first argument is less
1509  *   than the second, greater than 0 otherwise.
1510  */
1511 static int
1512 mlx5_dev_spawn_data_cmp(const void *a, const void *b)
1513 {
1514         const struct mlx5_switch_info *si_a =
1515                 &((const struct mlx5_dev_spawn_data *)a)->info;
1516         const struct mlx5_switch_info *si_b =
1517                 &((const struct mlx5_dev_spawn_data *)b)->info;
1518         int ret;
1519
1520         /* Master device first. */
1521         ret = si_b->master - si_a->master;
1522         if (ret)
1523                 return ret;
1524         /* Then representor devices. */
1525         ret = si_b->representor - si_a->representor;
1526         if (ret)
1527                 return ret;
1528         /* Unidentified devices come last in no specific order. */
1529         if (!si_a->representor)
1530                 return 0;
1531         /* Order representors by name. */
1532         return si_a->port_name - si_b->port_name;
1533 }
1534
1535 /**
1536  * Match PCI information for possible slaves of bonding device.
1537  *
1538  * @param[in] ibv_dev
1539  *   Pointer to Infiniband device structure.
1540  * @param[in] pci_dev
1541  *   Pointer to PCI device structure to match PCI address.
1542  * @param[in] nl_rdma
1543  *   Netlink RDMA group socket handle.
1544  *
1545  * @return
1546  *   negative value if no bonding device found, otherwise
1547  *   positive index of slave PF in bonding.
1548  */
1549 static int
1550 mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev,
1551                            const struct rte_pci_device *pci_dev,
1552                            int nl_rdma)
1553 {
1554         char ifname[IF_NAMESIZE + 1];
1555         unsigned int ifindex;
1556         unsigned int np, i;
1557         FILE *file = NULL;
1558         int pf = -1;
1559
1560         /*
1561          * Try to get master device name. If something goes
1562          * wrong suppose the lack of kernel support and no
1563          * bonding devices.
1564          */
1565         if (nl_rdma < 0)
1566                 return -1;
1567         if (!strstr(ibv_dev->name, "bond"))
1568                 return -1;
1569         np = mlx5_nl_portnum(nl_rdma, ibv_dev->name);
1570         if (!np)
1571                 return -1;
1572         /*
1573          * The Master device might not be on the predefined
1574          * port (not on port index 1, it is not garanted),
1575          * we have to scan all Infiniband device port and
1576          * find master.
1577          */
1578         for (i = 1; i <= np; ++i) {
1579                 /* Check whether Infiniband port is populated. */
1580                 ifindex = mlx5_nl_ifindex(nl_rdma, ibv_dev->name, i);
1581                 if (!ifindex)
1582                         continue;
1583                 if (!if_indextoname(ifindex, ifname))
1584                         continue;
1585                 /* Try to read bonding slave names from sysfs. */
1586                 MKSTR(slaves,
1587                       "/sys/class/net/%s/master/bonding/slaves", ifname);
1588                 file = fopen(slaves, "r");
1589                 if (file)
1590                         break;
1591         }
1592         if (!file)
1593                 return -1;
1594         /* Use safe format to check maximal buffer length. */
1595         MLX5_ASSERT(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE);
1596         while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) {
1597                 char tmp_str[IF_NAMESIZE + 32];
1598                 struct rte_pci_addr pci_addr;
1599                 struct mlx5_switch_info info;
1600
1601                 /* Process slave interface names in the loop. */
1602                 snprintf(tmp_str, sizeof(tmp_str),
1603                          "/sys/class/net/%s", ifname);
1604                 if (mlx5_dev_to_pci_addr(tmp_str, &pci_addr)) {
1605                         DRV_LOG(WARNING, "can not get PCI address"
1606                                          " for netdev \"%s\"", ifname);
1607                         continue;
1608                 }
1609                 if (pci_dev->addr.domain != pci_addr.domain ||
1610                     pci_dev->addr.bus != pci_addr.bus ||
1611                     pci_dev->addr.devid != pci_addr.devid ||
1612                     pci_dev->addr.function != pci_addr.function)
1613                         continue;
1614                 /* Slave interface PCI address match found. */
1615                 fclose(file);
1616                 snprintf(tmp_str, sizeof(tmp_str),
1617                          "/sys/class/net/%s/phys_port_name", ifname);
1618                 file = fopen(tmp_str, "rb");
1619                 if (!file)
1620                         break;
1621                 info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET;
1622                 if (fscanf(file, "%32s", tmp_str) == 1)
1623                         mlx5_translate_port_name(tmp_str, &info);
1624                 if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY ||
1625                     info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK)
1626                         pf = info.port_name;
1627                 break;
1628         }
1629         if (file)
1630                 fclose(file);
1631         return pf;
1632 }
1633
1634 /**
1635  * DPDK callback to register a PCI device.
1636  *
1637  * This function spawns Ethernet devices out of a given PCI device.
1638  *
1639  * @param[in] pci_drv
1640  *   PCI driver structure (mlx5_driver).
1641  * @param[in] pci_dev
1642  *   PCI device information.
1643  *
1644  * @return
1645  *   0 on success, a negative errno value otherwise and rte_errno is set.
1646  */
1647 int
1648 mlx5_os_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
1649                   struct rte_pci_device *pci_dev)
1650 {
1651         struct ibv_device **ibv_list;
1652         /*
1653          * Number of found IB Devices matching with requested PCI BDF.
1654          * nd != 1 means there are multiple IB devices over the same
1655          * PCI device and we have representors and master.
1656          */
1657         unsigned int nd = 0;
1658         /*
1659          * Number of found IB device Ports. nd = 1 and np = 1..n means
1660          * we have the single multiport IB device, and there may be
1661          * representors attached to some of found ports.
1662          */
1663         unsigned int np = 0;
1664         /*
1665          * Number of DPDK ethernet devices to Spawn - either over
1666          * multiple IB devices or multiple ports of single IB device.
1667          * Actually this is the number of iterations to spawn.
1668          */
1669         unsigned int ns = 0;
1670         /*
1671          * Bonding device
1672          *   < 0 - no bonding device (single one)
1673          *  >= 0 - bonding device (value is slave PF index)
1674          */
1675         int bd = -1;
1676         struct mlx5_dev_spawn_data *list = NULL;
1677         struct mlx5_dev_config dev_config;
1678         unsigned int dev_config_vf;
1679         int ret;
1680
1681         if (rte_eal_process_type() == RTE_PROC_PRIMARY)
1682                 mlx5_pmd_socket_init();
1683         ret = mlx5_init_once();
1684         if (ret) {
1685                 DRV_LOG(ERR, "unable to init PMD global data: %s",
1686                         strerror(rte_errno));
1687                 return -rte_errno;
1688         }
1689         errno = 0;
1690         ibv_list = mlx5_glue->get_device_list(&ret);
1691         if (!ibv_list) {
1692                 rte_errno = errno ? errno : ENOSYS;
1693                 DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?");
1694                 return -rte_errno;
1695         }
1696         /*
1697          * First scan the list of all Infiniband devices to find
1698          * matching ones, gathering into the list.
1699          */
1700         struct ibv_device *ibv_match[ret + 1];
1701         int nl_route = mlx5_nl_init(NETLINK_ROUTE);
1702         int nl_rdma = mlx5_nl_init(NETLINK_RDMA);
1703         unsigned int i;
1704
1705         while (ret-- > 0) {
1706                 struct rte_pci_addr pci_addr;
1707
1708                 DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name);
1709                 bd = mlx5_device_bond_pci_match
1710                                 (ibv_list[ret], pci_dev, nl_rdma);
1711                 if (bd >= 0) {
1712                         /*
1713                          * Bonding device detected. Only one match is allowed,
1714                          * the bonding is supported over multi-port IB device,
1715                          * there should be no matches on representor PCI
1716                          * functions or non VF LAG bonding devices with
1717                          * specified address.
1718                          */
1719                         if (nd) {
1720                                 DRV_LOG(ERR,
1721                                         "multiple PCI match on bonding device"
1722                                         "\"%s\" found", ibv_list[ret]->name);
1723                                 rte_errno = ENOENT;
1724                                 ret = -rte_errno;
1725                                 goto exit;
1726                         }
1727                         DRV_LOG(INFO, "PCI information matches for"
1728                                       " slave %d bonding device \"%s\"",
1729                                       bd, ibv_list[ret]->name);
1730                         ibv_match[nd++] = ibv_list[ret];
1731                         break;
1732                 }
1733                 if (mlx5_dev_to_pci_addr
1734                         (ibv_list[ret]->ibdev_path, &pci_addr))
1735                         continue;
1736                 if (pci_dev->addr.domain != pci_addr.domain ||
1737                     pci_dev->addr.bus != pci_addr.bus ||
1738                     pci_dev->addr.devid != pci_addr.devid ||
1739                     pci_dev->addr.function != pci_addr.function)
1740                         continue;
1741                 DRV_LOG(INFO, "PCI information matches for device \"%s\"",
1742                         ibv_list[ret]->name);
1743                 ibv_match[nd++] = ibv_list[ret];
1744         }
1745         ibv_match[nd] = NULL;
1746         if (!nd) {
1747                 /* No device matches, just complain and bail out. */
1748                 DRV_LOG(WARNING,
1749                         "no Verbs device matches PCI device " PCI_PRI_FMT ","
1750                         " are kernel drivers loaded?",
1751                         pci_dev->addr.domain, pci_dev->addr.bus,
1752                         pci_dev->addr.devid, pci_dev->addr.function);
1753                 rte_errno = ENOENT;
1754                 ret = -rte_errno;
1755                 goto exit;
1756         }
1757         if (nd == 1) {
1758                 /*
1759                  * Found single matching device may have multiple ports.
1760                  * Each port may be representor, we have to check the port
1761                  * number and check the representors existence.
1762                  */
1763                 if (nl_rdma >= 0)
1764                         np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name);
1765                 if (!np)
1766                         DRV_LOG(WARNING, "can not get IB device \"%s\""
1767                                          " ports number", ibv_match[0]->name);
1768                 if (bd >= 0 && !np) {
1769                         DRV_LOG(ERR, "can not get ports"
1770                                      " for bonding device");
1771                         rte_errno = ENOENT;
1772                         ret = -rte_errno;
1773                         goto exit;
1774                 }
1775         }
1776 #ifndef HAVE_MLX5DV_DR_DEVX_PORT
1777         if (bd >= 0) {
1778                 /*
1779                  * This may happen if there is VF LAG kernel support and
1780                  * application is compiled with older rdma_core library.
1781                  */
1782                 DRV_LOG(ERR,
1783                         "No kernel/verbs support for VF LAG bonding found.");
1784                 rte_errno = ENOTSUP;
1785                 ret = -rte_errno;
1786                 goto exit;
1787         }
1788 #endif
1789         /*
1790          * Now we can determine the maximal
1791          * amount of devices to be spawned.
1792          */
1793         list = mlx5_malloc(MLX5_MEM_ZERO,
1794                            sizeof(struct mlx5_dev_spawn_data) *
1795                            (np ? np : nd),
1796                            RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
1797         if (!list) {
1798                 DRV_LOG(ERR, "spawn data array allocation failure");
1799                 rte_errno = ENOMEM;
1800                 ret = -rte_errno;
1801                 goto exit;
1802         }
1803         if (bd >= 0 || np > 1) {
1804                 /*
1805                  * Single IB device with multiple ports found,
1806                  * it may be E-Switch master device and representors.
1807                  * We have to perform identification through the ports.
1808                  */
1809                 MLX5_ASSERT(nl_rdma >= 0);
1810                 MLX5_ASSERT(ns == 0);
1811                 MLX5_ASSERT(nd == 1);
1812                 MLX5_ASSERT(np);
1813                 for (i = 1; i <= np; ++i) {
1814                         list[ns].max_port = np;
1815                         list[ns].phys_port = i;
1816                         list[ns].phys_dev = ibv_match[0];
1817                         list[ns].eth_dev = NULL;
1818                         list[ns].pci_dev = pci_dev;
1819                         list[ns].pf_bond = bd;
1820                         list[ns].ifindex = mlx5_nl_ifindex
1821                                 (nl_rdma,
1822                                 mlx5_os_get_dev_device_name
1823                                                 (list[ns].phys_dev), i);
1824                         if (!list[ns].ifindex) {
1825                                 /*
1826                                  * No network interface index found for the
1827                                  * specified port, it means there is no
1828                                  * representor on this port. It's OK,
1829                                  * there can be disabled ports, for example
1830                                  * if sriov_numvfs < sriov_totalvfs.
1831                                  */
1832                                 continue;
1833                         }
1834                         ret = -1;
1835                         if (nl_route >= 0)
1836                                 ret = mlx5_nl_switch_info
1837                                                (nl_route,
1838                                                 list[ns].ifindex,
1839                                                 &list[ns].info);
1840                         if (ret || (!list[ns].info.representor &&
1841                                     !list[ns].info.master)) {
1842                                 /*
1843                                  * We failed to recognize representors with
1844                                  * Netlink, let's try to perform the task
1845                                  * with sysfs.
1846                                  */
1847                                 ret =  mlx5_sysfs_switch_info
1848                                                 (list[ns].ifindex,
1849                                                  &list[ns].info);
1850                         }
1851                         if (!ret && bd >= 0) {
1852                                 switch (list[ns].info.name_type) {
1853                                 case MLX5_PHYS_PORT_NAME_TYPE_UPLINK:
1854                                         if (list[ns].info.port_name == bd)
1855                                                 ns++;
1856                                         break;
1857                                 case MLX5_PHYS_PORT_NAME_TYPE_PFHPF:
1858                                         /* Fallthrough */
1859                                 case MLX5_PHYS_PORT_NAME_TYPE_PFVF:
1860                                         if (list[ns].info.pf_num == bd)
1861                                                 ns++;
1862                                         break;
1863                                 default:
1864                                         break;
1865                                 }
1866                                 continue;
1867                         }
1868                         if (!ret && (list[ns].info.representor ^
1869                                      list[ns].info.master))
1870                                 ns++;
1871                 }
1872                 if (!ns) {
1873                         DRV_LOG(ERR,
1874                                 "unable to recognize master/representors"
1875                                 " on the IB device with multiple ports");
1876                         rte_errno = ENOENT;
1877                         ret = -rte_errno;
1878                         goto exit;
1879                 }
1880         } else {
1881                 /*
1882                  * The existence of several matching entries (nd > 1) means
1883                  * port representors have been instantiated. No existing Verbs
1884                  * call nor sysfs entries can tell them apart, this can only
1885                  * be done through Netlink calls assuming kernel drivers are
1886                  * recent enough to support them.
1887                  *
1888                  * In the event of identification failure through Netlink,
1889                  * try again through sysfs, then:
1890                  *
1891                  * 1. A single IB device matches (nd == 1) with single
1892                  *    port (np=0/1) and is not a representor, assume
1893                  *    no switch support.
1894                  *
1895                  * 2. Otherwise no safe assumptions can be made;
1896                  *    complain louder and bail out.
1897                  */
1898                 for (i = 0; i != nd; ++i) {
1899                         memset(&list[ns].info, 0, sizeof(list[ns].info));
1900                         list[ns].max_port = 1;
1901                         list[ns].phys_port = 1;
1902                         list[ns].phys_dev = ibv_match[i];
1903                         list[ns].eth_dev = NULL;
1904                         list[ns].pci_dev = pci_dev;
1905                         list[ns].pf_bond = -1;
1906                         list[ns].ifindex = 0;
1907                         if (nl_rdma >= 0)
1908                                 list[ns].ifindex = mlx5_nl_ifindex
1909                                 (nl_rdma,
1910                                 mlx5_os_get_dev_device_name
1911                                                 (list[ns].phys_dev), 1);
1912                         if (!list[ns].ifindex) {
1913                                 char ifname[IF_NAMESIZE];
1914
1915                                 /*
1916                                  * Netlink failed, it may happen with old
1917                                  * ib_core kernel driver (before 4.16).
1918                                  * We can assume there is old driver because
1919                                  * here we are processing single ports IB
1920                                  * devices. Let's try sysfs to retrieve
1921                                  * the ifindex. The method works for
1922                                  * master device only.
1923                                  */
1924                                 if (nd > 1) {
1925                                         /*
1926                                          * Multiple devices found, assume
1927                                          * representors, can not distinguish
1928                                          * master/representor and retrieve
1929                                          * ifindex via sysfs.
1930                                          */
1931                                         continue;
1932                                 }
1933                                 ret = mlx5_get_ifname_sysfs
1934                                         (ibv_match[i]->ibdev_path, ifname);
1935                                 if (!ret)
1936                                         list[ns].ifindex =
1937                                                 if_nametoindex(ifname);
1938                                 if (!list[ns].ifindex) {
1939                                         /*
1940                                          * No network interface index found
1941                                          * for the specified device, it means
1942                                          * there it is neither representor
1943                                          * nor master.
1944                                          */
1945                                         continue;
1946                                 }
1947                         }
1948                         ret = -1;
1949                         if (nl_route >= 0)
1950                                 ret = mlx5_nl_switch_info
1951                                                (nl_route,
1952                                                 list[ns].ifindex,
1953                                                 &list[ns].info);
1954                         if (ret || (!list[ns].info.representor &&
1955                                     !list[ns].info.master)) {
1956                                 /*
1957                                  * We failed to recognize representors with
1958                                  * Netlink, let's try to perform the task
1959                                  * with sysfs.
1960                                  */
1961                                 ret =  mlx5_sysfs_switch_info
1962                                                 (list[ns].ifindex,
1963                                                  &list[ns].info);
1964                         }
1965                         if (!ret && (list[ns].info.representor ^
1966                                      list[ns].info.master)) {
1967                                 ns++;
1968                         } else if ((nd == 1) &&
1969                                    !list[ns].info.representor &&
1970                                    !list[ns].info.master) {
1971                                 /*
1972                                  * Single IB device with
1973                                  * one physical port and
1974                                  * attached network device.
1975                                  * May be SRIOV is not enabled
1976                                  * or there is no representors.
1977                                  */
1978                                 DRV_LOG(INFO, "no E-Switch support detected");
1979                                 ns++;
1980                                 break;
1981                         }
1982                 }
1983                 if (!ns) {
1984                         DRV_LOG(ERR,
1985                                 "unable to recognize master/representors"
1986                                 " on the multiple IB devices");
1987                         rte_errno = ENOENT;
1988                         ret = -rte_errno;
1989                         goto exit;
1990                 }
1991         }
1992         MLX5_ASSERT(ns);
1993         /*
1994          * Sort list to probe devices in natural order for users convenience
1995          * (i.e. master first, then representors from lowest to highest ID).
1996          */
1997         qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp);
1998         /* Device specific configuration. */
1999         switch (pci_dev->id.device_id) {
2000         case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF:
2001         case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF:
2002         case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF:
2003         case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF:
2004         case PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF:
2005         case PCI_DEVICE_ID_MELLANOX_CONNECTX6VF:
2006         case PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF:
2007                 dev_config_vf = 1;
2008                 break;
2009         default:
2010                 dev_config_vf = 0;
2011                 break;
2012         }
2013         for (i = 0; i != ns; ++i) {
2014                 uint32_t restore;
2015
2016                 /* Default configuration. */
2017                 memset(&dev_config, 0, sizeof(struct mlx5_dev_config));
2018                 dev_config.vf = dev_config_vf;
2019                 dev_config.mps = MLX5_ARG_UNSET;
2020                 dev_config.dbnc = MLX5_ARG_UNSET;
2021                 dev_config.rx_vec_en = 1;
2022                 dev_config.txq_inline_max = MLX5_ARG_UNSET;
2023                 dev_config.txq_inline_min = MLX5_ARG_UNSET;
2024                 dev_config.txq_inline_mpw = MLX5_ARG_UNSET;
2025                 dev_config.txqs_inline = MLX5_ARG_UNSET;
2026                 dev_config.vf_nl_en = 1;
2027                 dev_config.mr_ext_memseg_en = 1;
2028                 dev_config.mprq.max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN;
2029                 dev_config.mprq.min_rxqs_num = MLX5_MPRQ_MIN_RXQS;
2030                 dev_config.dv_esw_en = 1;
2031                 dev_config.dv_flow_en = 1;
2032                 dev_config.decap_en = 1;
2033                 dev_config.log_hp_size = MLX5_ARG_UNSET;
2034                 list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device,
2035                                                  &list[i],
2036                                                  &dev_config);
2037                 if (!list[i].eth_dev) {
2038                         if (rte_errno != EBUSY && rte_errno != EEXIST)
2039                                 break;
2040                         /* Device is disabled or already spawned. Ignore it. */
2041                         continue;
2042                 }
2043                 restore = list[i].eth_dev->data->dev_flags;
2044                 rte_eth_copy_pci_info(list[i].eth_dev, pci_dev);
2045                 /* Restore non-PCI flags cleared by the above call. */
2046                 list[i].eth_dev->data->dev_flags |= restore;
2047                 rte_eth_dev_probing_finish(list[i].eth_dev);
2048         }
2049         if (i != ns) {
2050                 DRV_LOG(ERR,
2051                         "probe of PCI device " PCI_PRI_FMT " aborted after"
2052                         " encountering an error: %s",
2053                         pci_dev->addr.domain, pci_dev->addr.bus,
2054                         pci_dev->addr.devid, pci_dev->addr.function,
2055                         strerror(rte_errno));
2056                 ret = -rte_errno;
2057                 /* Roll back. */
2058                 while (i--) {
2059                         if (!list[i].eth_dev)
2060                                 continue;
2061                         mlx5_dev_close(list[i].eth_dev);
2062                         /* mac_addrs must not be freed because in dev_private */
2063                         list[i].eth_dev->data->mac_addrs = NULL;
2064                         claim_zero(rte_eth_dev_release_port(list[i].eth_dev));
2065                 }
2066                 /* Restore original error. */
2067                 rte_errno = -ret;
2068         } else {
2069                 ret = 0;
2070         }
2071 exit:
2072         /*
2073          * Do the routine cleanup:
2074          * - close opened Netlink sockets
2075          * - free allocated spawn data array
2076          * - free the Infiniband device list
2077          */
2078         if (nl_rdma >= 0)
2079                 close(nl_rdma);
2080         if (nl_route >= 0)
2081                 close(nl_route);
2082         if (list)
2083                 mlx5_free(list);
2084         MLX5_ASSERT(ibv_list);
2085         mlx5_glue->free_device_list(ibv_list);
2086         return ret;
2087 }
2088
2089 static int
2090 mlx5_config_doorbell_mapping_env(const struct mlx5_dev_config *config)
2091 {
2092         char *env;
2093         int value;
2094
2095         MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2096         /* Get environment variable to store. */
2097         env = getenv(MLX5_SHUT_UP_BF);
2098         value = env ? !!strcmp(env, "0") : MLX5_ARG_UNSET;
2099         if (config->dbnc == MLX5_ARG_UNSET)
2100                 setenv(MLX5_SHUT_UP_BF, MLX5_SHUT_UP_BF_DEFAULT, 1);
2101         else
2102                 setenv(MLX5_SHUT_UP_BF,
2103                        config->dbnc == MLX5_TXDB_NCACHED ? "1" : "0", 1);
2104         return value;
2105 }
2106
2107 static void
2108 mlx5_restore_doorbell_mapping_env(int value)
2109 {
2110         MLX5_ASSERT(rte_eal_process_type() == RTE_PROC_PRIMARY);
2111         /* Restore the original environment variable state. */
2112         if (value == MLX5_ARG_UNSET)
2113                 unsetenv(MLX5_SHUT_UP_BF);
2114         else
2115                 setenv(MLX5_SHUT_UP_BF, value ? "1" : "0", 1);
2116 }
2117
2118 /**
2119  * Extract pdn of PD object using DV API.
2120  *
2121  * @param[in] pd
2122  *   Pointer to the verbs PD object.
2123  * @param[out] pdn
2124  *   Pointer to the PD object number variable.
2125  *
2126  * @return
2127  *   0 on success, error value otherwise.
2128  */
2129 int
2130 mlx5_os_get_pdn(void *pd, uint32_t *pdn)
2131 {
2132 #ifdef HAVE_IBV_FLOW_DV_SUPPORT
2133         struct mlx5dv_obj obj;
2134         struct mlx5dv_pd pd_info;
2135         int ret = 0;
2136
2137         obj.pd.in = pd;
2138         obj.pd.out = &pd_info;
2139         ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_PD);
2140         if (ret) {
2141                 DRV_LOG(DEBUG, "Fail to get PD object info");
2142                 return ret;
2143         }
2144         *pdn = pd_info.pdn;
2145         return 0;
2146 #else
2147         (void)pd;
2148         (void)pdn;
2149         return -ENOTSUP;
2150 #endif /* HAVE_IBV_FLOW_DV_SUPPORT */
2151 }
2152
2153 /**
2154  * Function API to open IB device.
2155  *
2156  * This function calls the Linux glue APIs to open a device.
2157  *
2158  * @param[in] spawn
2159  *   Pointer to the IB device attributes (name, port, etc).
2160  * @param[out] config
2161  *   Pointer to device configuration structure.
2162  * @param[out] sh
2163  *   Pointer to shared context structure.
2164  *
2165  * @return
2166  *   0 on success, a positive error value otherwise.
2167  */
2168 int
2169 mlx5_os_open_device(const struct mlx5_dev_spawn_data *spawn,
2170                      const struct mlx5_dev_config *config,
2171                      struct mlx5_dev_ctx_shared *sh)
2172 {
2173         int dbmap_env;
2174         int err = 0;
2175
2176         sh->numa_node = spawn->pci_dev->device.numa_node;
2177         pthread_mutex_init(&sh->txpp.mutex, NULL);
2178         /*
2179          * Configure environment variable "MLX5_BF_SHUT_UP"
2180          * before the device creation. The rdma_core library
2181          * checks the variable at device creation and
2182          * stores the result internally.
2183          */
2184         dbmap_env = mlx5_config_doorbell_mapping_env(config);
2185         /* Try to open IB device with DV first, then usual Verbs. */
2186         errno = 0;
2187         sh->ctx = mlx5_glue->dv_open_device(spawn->phys_dev);
2188         if (sh->ctx) {
2189                 sh->devx = 1;
2190                 DRV_LOG(DEBUG, "DevX is supported");
2191                 /* The device is created, no need for environment. */
2192                 mlx5_restore_doorbell_mapping_env(dbmap_env);
2193         } else {
2194                 /* The environment variable is still configured. */
2195                 sh->ctx = mlx5_glue->open_device(spawn->phys_dev);
2196                 err = errno ? errno : ENODEV;
2197                 /*
2198                  * The environment variable is not needed anymore,
2199                  * all device creation attempts are completed.
2200                  */
2201                 mlx5_restore_doorbell_mapping_env(dbmap_env);
2202                 if (!sh->ctx)
2203                         return err;
2204                 DRV_LOG(DEBUG, "DevX is NOT supported");
2205                 err = 0;
2206         }
2207         return err;
2208 }
2209
2210 /**
2211  * Install shared asynchronous device events handler.
2212  * This function is implemented to support event sharing
2213  * between multiple ports of single IB device.
2214  *
2215  * @param sh
2216  *   Pointer to mlx5_dev_ctx_shared object.
2217  */
2218 void
2219 mlx5_os_dev_shared_handler_install(struct mlx5_dev_ctx_shared *sh)
2220 {
2221         int ret;
2222         int flags;
2223
2224         sh->intr_handle.fd = -1;
2225         flags = fcntl(((struct ibv_context *)sh->ctx)->async_fd, F_GETFL);
2226         ret = fcntl(((struct ibv_context *)sh->ctx)->async_fd,
2227                     F_SETFL, flags | O_NONBLOCK);
2228         if (ret) {
2229                 DRV_LOG(INFO, "failed to change file descriptor async event"
2230                         " queue");
2231         } else {
2232                 sh->intr_handle.fd = ((struct ibv_context *)sh->ctx)->async_fd;
2233                 sh->intr_handle.type = RTE_INTR_HANDLE_EXT;
2234                 if (rte_intr_callback_register(&sh->intr_handle,
2235                                         mlx5_dev_interrupt_handler, sh)) {
2236                         DRV_LOG(INFO, "Fail to install the shared interrupt.");
2237                         sh->intr_handle.fd = -1;
2238                 }
2239         }
2240         if (sh->devx) {
2241 #ifdef HAVE_IBV_DEVX_ASYNC
2242                 sh->intr_handle_devx.fd = -1;
2243                 sh->devx_comp =
2244                         (void *)mlx5_glue->devx_create_cmd_comp(sh->ctx);
2245                 struct mlx5dv_devx_cmd_comp *devx_comp = sh->devx_comp;
2246                 if (!devx_comp) {
2247                         DRV_LOG(INFO, "failed to allocate devx_comp.");
2248                         return;
2249                 }
2250                 flags = fcntl(devx_comp->fd, F_GETFL);
2251                 ret = fcntl(devx_comp->fd, F_SETFL, flags | O_NONBLOCK);
2252                 if (ret) {
2253                         DRV_LOG(INFO, "failed to change file descriptor"
2254                                 " devx comp");
2255                         return;
2256                 }
2257                 sh->intr_handle_devx.fd = devx_comp->fd;
2258                 sh->intr_handle_devx.type = RTE_INTR_HANDLE_EXT;
2259                 if (rte_intr_callback_register(&sh->intr_handle_devx,
2260                                         mlx5_dev_interrupt_handler_devx, sh)) {
2261                         DRV_LOG(INFO, "Fail to install the devx shared"
2262                                 " interrupt.");
2263                         sh->intr_handle_devx.fd = -1;
2264                 }
2265 #endif /* HAVE_IBV_DEVX_ASYNC */
2266         }
2267 }
2268
2269 /**
2270  * Uninstall shared asynchronous device events handler.
2271  * This function is implemented to support event sharing
2272  * between multiple ports of single IB device.
2273  *
2274  * @param dev
2275  *   Pointer to mlx5_dev_ctx_shared object.
2276  */
2277 void
2278 mlx5_os_dev_shared_handler_uninstall(struct mlx5_dev_ctx_shared *sh)
2279 {
2280         if (sh->intr_handle.fd >= 0)
2281                 mlx5_intr_callback_unregister(&sh->intr_handle,
2282                                               mlx5_dev_interrupt_handler, sh);
2283 #ifdef HAVE_IBV_DEVX_ASYNC
2284         if (sh->intr_handle_devx.fd >= 0)
2285                 rte_intr_callback_unregister(&sh->intr_handle_devx,
2286                                   mlx5_dev_interrupt_handler_devx, sh);
2287         if (sh->devx_comp)
2288                 mlx5_glue->devx_destroy_cmd_comp(sh->devx_comp);
2289 #endif
2290 }
2291
2292 /**
2293  * Read statistics by a named counter.
2294  *
2295  * @param[in] priv
2296  *   Pointer to the private device data structure.
2297  * @param[in] ctr_name
2298  *   Pointer to the name of the statistic counter to read
2299  * @param[out] stat
2300  *   Pointer to read statistic value.
2301  * @return
2302  *   0 on success and stat is valud, 1 if failed to read the value
2303  *   rte_errno is set.
2304  *
2305  */
2306 int
2307 mlx5_os_read_dev_stat(struct mlx5_priv *priv, const char *ctr_name,
2308                       uint64_t *stat)
2309 {
2310         int fd;
2311
2312         if (priv->sh) {
2313                 MKSTR(path, "%s/ports/%d/hw_counters/%s",
2314                       priv->sh->ibdev_path,
2315                       priv->dev_port,
2316                       ctr_name);
2317                 fd = open(path, O_RDONLY);
2318                 /*
2319                  * in switchdev the file location is not per port
2320                  * but rather in <ibdev_path>/hw_counters/<file_name>.
2321                  */
2322                 if (fd == -1) {
2323                         MKSTR(path1, "%s/hw_counters/%s",
2324                               priv->sh->ibdev_path,
2325                               ctr_name);
2326                         fd = open(path1, O_RDONLY);
2327                 }
2328                 if (fd != -1) {
2329                         char buf[21] = {'\0'};
2330                         ssize_t n = read(fd, buf, sizeof(buf));
2331
2332                         close(fd);
2333                         if (n != -1) {
2334                                 *stat = strtoull(buf, NULL, 10);
2335                                 return 0;
2336                         }
2337                 }
2338         }
2339         *stat = 0;
2340         return 1;
2341 }
2342
2343 /**
2344  * Set the reg_mr and dereg_mr call backs
2345  *
2346  * @param reg_mr_cb[out]
2347  *   Pointer to reg_mr func
2348  * @param dereg_mr_cb[out]
2349  *   Pointer to dereg_mr func
2350  *
2351  */
2352 void
2353 mlx5_os_set_reg_mr_cb(mlx5_reg_mr_t *reg_mr_cb,
2354                       mlx5_dereg_mr_t *dereg_mr_cb)
2355 {
2356         *reg_mr_cb = mlx5_verbs_ops.reg_mr;
2357         *dereg_mr_cb = mlx5_verbs_ops.dereg_mr;
2358 }
2359
2360 /**
2361  * Remove a MAC address from device
2362  *
2363  * @param dev
2364  *   Pointer to Ethernet device structure.
2365  * @param index
2366  *   MAC address index.
2367  */
2368 void
2369 mlx5_os_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index)
2370 {
2371         struct mlx5_priv *priv = dev->data->dev_private;
2372         const int vf = priv->config.vf;
2373
2374         if (vf)
2375                 mlx5_nl_mac_addr_remove(priv->nl_socket_route,
2376                                         mlx5_ifindex(dev), priv->mac_own,
2377                                         &dev->data->mac_addrs[index], index);
2378 }
2379
2380 /**
2381  * Adds a MAC address to the device
2382  *
2383  * @param dev
2384  *   Pointer to Ethernet device structure.
2385  * @param mac_addr
2386  *   MAC address to register.
2387  * @param index
2388  *   MAC address index.
2389  *
2390  * @return
2391  *   0 on success, a negative errno value otherwise
2392  */
2393 int
2394 mlx5_os_mac_addr_add(struct rte_eth_dev *dev, struct rte_ether_addr *mac,
2395                      uint32_t index)
2396 {
2397         struct mlx5_priv *priv = dev->data->dev_private;
2398         const int vf = priv->config.vf;
2399         int ret = 0;
2400
2401         if (vf)
2402                 ret = mlx5_nl_mac_addr_add(priv->nl_socket_route,
2403                                            mlx5_ifindex(dev), priv->mac_own,
2404                                            mac, index);
2405         return ret;
2406 }
2407
2408 /**
2409  * Modify a VF MAC address
2410  *
2411  * @param priv
2412  *   Pointer to device private data.
2413  * @param mac_addr
2414  *   MAC address to modify into.
2415  * @param iface_idx
2416  *   Net device interface index
2417  * @param vf_index
2418  *   VF index
2419  *
2420  * @return
2421  *   0 on success, a negative errno value otherwise
2422  */
2423 int
2424 mlx5_os_vf_mac_addr_modify(struct mlx5_priv *priv,
2425                            unsigned int iface_idx,
2426                            struct rte_ether_addr *mac_addr,
2427                            int vf_index)
2428 {
2429         return mlx5_nl_vf_mac_addr_modify
2430                 (priv->nl_socket_route, iface_idx, mac_addr, vf_index);
2431 }
2432
2433 /**
2434  * Set device promiscuous mode
2435  *
2436  * @param dev
2437  *   Pointer to Ethernet device structure.
2438  * @param enable
2439  *   0 - promiscuous is disabled, otherwise - enabled
2440  *
2441  * @return
2442  *   0 on success, a negative error value otherwise
2443  */
2444 int
2445 mlx5_os_set_promisc(struct rte_eth_dev *dev, int enable)
2446 {
2447         struct mlx5_priv *priv = dev->data->dev_private;
2448
2449         return mlx5_nl_promisc(priv->nl_socket_route,
2450                                mlx5_ifindex(dev), !!enable);
2451 }
2452
2453 /**
2454  * Set device promiscuous mode
2455  *
2456  * @param dev
2457  *   Pointer to Ethernet device structure.
2458  * @param enable
2459  *   0 - all multicase is disabled, otherwise - enabled
2460  *
2461  * @return
2462  *   0 on success, a negative error value otherwise
2463  */
2464 int
2465 mlx5_os_set_allmulti(struct rte_eth_dev *dev, int enable)
2466 {
2467         struct mlx5_priv *priv = dev->data->dev_private;
2468
2469         return mlx5_nl_allmulti(priv->nl_socket_route,
2470                                 mlx5_ifindex(dev), !!enable);
2471 }
2472
2473 /**
2474  * Flush device MAC addresses
2475  *
2476  * @param dev
2477  *   Pointer to Ethernet device structure.
2478  *
2479  */
2480 void
2481 mlx5_os_mac_addr_flush(struct rte_eth_dev *dev)
2482 {
2483         struct mlx5_priv *priv = dev->data->dev_private;
2484
2485         mlx5_nl_mac_addr_flush(priv->nl_socket_route, mlx5_ifindex(dev),
2486                                dev->data->mac_addrs,
2487                                MLX5_MAX_MAC_ADDRESSES, priv->mac_own);
2488 }
2489
2490 const struct eth_dev_ops mlx5_os_dev_ops = {
2491         .dev_configure = mlx5_dev_configure,
2492         .dev_start = mlx5_dev_start,
2493         .dev_stop = mlx5_dev_stop,
2494         .dev_set_link_down = mlx5_set_link_down,
2495         .dev_set_link_up = mlx5_set_link_up,
2496         .dev_close = mlx5_dev_close,
2497         .promiscuous_enable = mlx5_promiscuous_enable,
2498         .promiscuous_disable = mlx5_promiscuous_disable,
2499         .allmulticast_enable = mlx5_allmulticast_enable,
2500         .allmulticast_disable = mlx5_allmulticast_disable,
2501         .link_update = mlx5_link_update,
2502         .stats_get = mlx5_stats_get,
2503         .stats_reset = mlx5_stats_reset,
2504         .xstats_get = mlx5_xstats_get,
2505         .xstats_reset = mlx5_xstats_reset,
2506         .xstats_get_names = mlx5_xstats_get_names,
2507         .fw_version_get = mlx5_fw_version_get,
2508         .dev_infos_get = mlx5_dev_infos_get,
2509         .read_clock = mlx5_txpp_read_clock,
2510         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2511         .vlan_filter_set = mlx5_vlan_filter_set,
2512         .rx_queue_setup = mlx5_rx_queue_setup,
2513         .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2514         .tx_queue_setup = mlx5_tx_queue_setup,
2515         .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2516         .rx_queue_release = mlx5_rx_queue_release,
2517         .tx_queue_release = mlx5_tx_queue_release,
2518         .rx_queue_start = mlx5_rx_queue_start,
2519         .rx_queue_stop = mlx5_rx_queue_stop,
2520         .tx_queue_start = mlx5_tx_queue_start,
2521         .tx_queue_stop = mlx5_tx_queue_stop,
2522         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2523         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2524         .mac_addr_remove = mlx5_mac_addr_remove,
2525         .mac_addr_add = mlx5_mac_addr_add,
2526         .mac_addr_set = mlx5_mac_addr_set,
2527         .set_mc_addr_list = mlx5_set_mc_addr_list,
2528         .mtu_set = mlx5_dev_set_mtu,
2529         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2530         .vlan_offload_set = mlx5_vlan_offload_set,
2531         .reta_update = mlx5_dev_rss_reta_update,
2532         .reta_query = mlx5_dev_rss_reta_query,
2533         .rss_hash_update = mlx5_rss_hash_update,
2534         .rss_hash_conf_get = mlx5_rss_hash_conf_get,
2535         .filter_ctrl = mlx5_dev_filter_ctrl,
2536         .rxq_info_get = mlx5_rxq_info_get,
2537         .txq_info_get = mlx5_txq_info_get,
2538         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2539         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2540         .rx_queue_intr_enable = mlx5_rx_intr_enable,
2541         .rx_queue_intr_disable = mlx5_rx_intr_disable,
2542         .is_removed = mlx5_is_removed,
2543         .udp_tunnel_port_add  = mlx5_udp_tunnel_port_add,
2544         .get_module_info = mlx5_get_module_info,
2545         .get_module_eeprom = mlx5_get_module_eeprom,
2546         .hairpin_cap_get = mlx5_hairpin_cap_get,
2547         .mtr_ops_get = mlx5_flow_meter_ops_get,
2548 };
2549
2550 /* Available operations from secondary process. */
2551 const struct eth_dev_ops mlx5_os_dev_sec_ops = {
2552         .stats_get = mlx5_stats_get,
2553         .stats_reset = mlx5_stats_reset,
2554         .xstats_get = mlx5_xstats_get,
2555         .xstats_reset = mlx5_xstats_reset,
2556         .xstats_get_names = mlx5_xstats_get_names,
2557         .fw_version_get = mlx5_fw_version_get,
2558         .dev_infos_get = mlx5_dev_infos_get,
2559         .read_clock = mlx5_txpp_read_clock,
2560         .rx_queue_start = mlx5_rx_queue_start,
2561         .rx_queue_stop = mlx5_rx_queue_stop,
2562         .tx_queue_start = mlx5_tx_queue_start,
2563         .tx_queue_stop = mlx5_tx_queue_stop,
2564         .rxq_info_get = mlx5_rxq_info_get,
2565         .txq_info_get = mlx5_txq_info_get,
2566         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2567         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2568         .get_module_info = mlx5_get_module_info,
2569         .get_module_eeprom = mlx5_get_module_eeprom,
2570 };
2571
2572 /* Available operations in flow isolated mode. */
2573 const struct eth_dev_ops mlx5_os_dev_ops_isolate = {
2574         .dev_configure = mlx5_dev_configure,
2575         .dev_start = mlx5_dev_start,
2576         .dev_stop = mlx5_dev_stop,
2577         .dev_set_link_down = mlx5_set_link_down,
2578         .dev_set_link_up = mlx5_set_link_up,
2579         .dev_close = mlx5_dev_close,
2580         .promiscuous_enable = mlx5_promiscuous_enable,
2581         .promiscuous_disable = mlx5_promiscuous_disable,
2582         .allmulticast_enable = mlx5_allmulticast_enable,
2583         .allmulticast_disable = mlx5_allmulticast_disable,
2584         .link_update = mlx5_link_update,
2585         .stats_get = mlx5_stats_get,
2586         .stats_reset = mlx5_stats_reset,
2587         .xstats_get = mlx5_xstats_get,
2588         .xstats_reset = mlx5_xstats_reset,
2589         .xstats_get_names = mlx5_xstats_get_names,
2590         .fw_version_get = mlx5_fw_version_get,
2591         .dev_infos_get = mlx5_dev_infos_get,
2592         .read_clock = mlx5_txpp_read_clock,
2593         .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get,
2594         .vlan_filter_set = mlx5_vlan_filter_set,
2595         .rx_queue_setup = mlx5_rx_queue_setup,
2596         .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup,
2597         .tx_queue_setup = mlx5_tx_queue_setup,
2598         .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup,
2599         .rx_queue_release = mlx5_rx_queue_release,
2600         .tx_queue_release = mlx5_tx_queue_release,
2601         .rx_queue_start = mlx5_rx_queue_start,
2602         .rx_queue_stop = mlx5_rx_queue_stop,
2603         .tx_queue_start = mlx5_tx_queue_start,
2604         .tx_queue_stop = mlx5_tx_queue_stop,
2605         .flow_ctrl_get = mlx5_dev_get_flow_ctrl,
2606         .flow_ctrl_set = mlx5_dev_set_flow_ctrl,
2607         .mac_addr_remove = mlx5_mac_addr_remove,
2608         .mac_addr_add = mlx5_mac_addr_add,
2609         .mac_addr_set = mlx5_mac_addr_set,
2610         .set_mc_addr_list = mlx5_set_mc_addr_list,
2611         .mtu_set = mlx5_dev_set_mtu,
2612         .vlan_strip_queue_set = mlx5_vlan_strip_queue_set,
2613         .vlan_offload_set = mlx5_vlan_offload_set,
2614         .filter_ctrl = mlx5_dev_filter_ctrl,
2615         .rxq_info_get = mlx5_rxq_info_get,
2616         .txq_info_get = mlx5_txq_info_get,
2617         .rx_burst_mode_get = mlx5_rx_burst_mode_get,
2618         .tx_burst_mode_get = mlx5_tx_burst_mode_get,
2619         .rx_queue_intr_enable = mlx5_rx_intr_enable,
2620         .rx_queue_intr_disable = mlx5_rx_intr_disable,
2621         .is_removed = mlx5_is_removed,
2622         .get_module_info = mlx5_get_module_info,
2623         .get_module_eeprom = mlx5_get_module_eeprom,
2624         .hairpin_cap_get = mlx5_hairpin_cap_get,
2625         .mtr_ops_get = mlx5_flow_meter_ops_get,
2626 };