/* SPDX-License-Identifier: BSD-3-Clause * Copyright 2015 6WIND S.A. * Copyright 2015 Mellanox Technologies, Ltd */ #include #include #include #include #include #include #include #include #include #include /* Verbs header. */ /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */ #ifdef PEDANTIC #pragma GCC diagnostic ignored "-Wpedantic" #endif #include #ifdef PEDANTIC #pragma GCC diagnostic error "-Wpedantic" #endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mlx5_defs.h" #include "mlx5.h" #include "mlx5_utils.h" #include "mlx5_rxtx.h" #include "mlx5_autoconf.h" #include "mlx5_mr.h" #include "mlx5_flow.h" /* Device parameter to enable RX completion queue compression. */ #define MLX5_RXQ_CQE_COMP_EN "rxq_cqe_comp_en" /* Device parameter to enable RX completion entry padding to 128B. */ #define MLX5_RXQ_CQE_PAD_EN "rxq_cqe_pad_en" /* Device parameter to enable padding Rx packet to cacheline size. */ #define MLX5_RXQ_PKT_PAD_EN "rxq_pkt_pad_en" /* Device parameter to enable Multi-Packet Rx queue. */ #define MLX5_RX_MPRQ_EN "mprq_en" /* Device parameter to configure log 2 of the number of strides for MPRQ. */ #define MLX5_RX_MPRQ_LOG_STRIDE_NUM "mprq_log_stride_num" /* Device parameter to limit the size of memcpy'd packet for MPRQ. */ #define MLX5_RX_MPRQ_MAX_MEMCPY_LEN "mprq_max_memcpy_len" /* Device parameter to set the minimum number of Rx queues to enable MPRQ. */ #define MLX5_RXQS_MIN_MPRQ "rxqs_min_mprq" /* Device parameter to configure inline send. Deprecated, ignored.*/ #define MLX5_TXQ_INLINE "txq_inline" /* Device parameter to limit packet size to inline with ordinary SEND. */ #define MLX5_TXQ_INLINE_MAX "txq_inline_max" /* Device parameter to configure minimal data size to inline. */ #define MLX5_TXQ_INLINE_MIN "txq_inline_min" /* Device parameter to limit packet size to inline with Enhanced MPW. */ #define MLX5_TXQ_INLINE_MPW "txq_inline_mpw" /* * Device parameter to configure the number of TX queues threshold for * enabling inline send. */ #define MLX5_TXQS_MIN_INLINE "txqs_min_inline" /* * Device parameter to configure the number of TX queues threshold for * enabling vectorized Tx, deprecated, ignored (no vectorized Tx routines). */ #define MLX5_TXQS_MAX_VEC "txqs_max_vec" /* Device parameter to enable multi-packet send WQEs. */ #define MLX5_TXQ_MPW_EN "txq_mpw_en" /* * Device parameter to force doorbell register mapping * to non-cahed region eliminating the extra write memory barrier. */ #define MLX5_TX_DB_NC "tx_db_nc" /* * Device parameter to include 2 dsegs in the title WQEBB. * Deprecated, ignored. */ #define MLX5_TXQ_MPW_HDR_DSEG_EN "txq_mpw_hdr_dseg_en" /* * Device parameter to limit the size of inlining packet. * Deprecated, ignored. */ #define MLX5_TXQ_MAX_INLINE_LEN "txq_max_inline_len" /* * Device parameter to enable hardware Tx vector. * Deprecated, ignored (no vectorized Tx routines anymore). */ #define MLX5_TX_VEC_EN "tx_vec_en" /* Device parameter to enable hardware Rx vector. */ #define MLX5_RX_VEC_EN "rx_vec_en" /* Allow L3 VXLAN flow creation. */ #define MLX5_L3_VXLAN_EN "l3_vxlan_en" /* Activate DV E-Switch flow steering. */ #define MLX5_DV_ESW_EN "dv_esw_en" /* Activate DV flow steering. */ #define MLX5_DV_FLOW_EN "dv_flow_en" /* Enable extensive flow metadata support. */ #define MLX5_DV_XMETA_EN "dv_xmeta_en" /* Activate Netlink support in VF mode. */ #define MLX5_VF_NL_EN "vf_nl_en" /* Enable extending memsegs when creating a MR. */ #define MLX5_MR_EXT_MEMSEG_EN "mr_ext_memseg_en" /* Select port representors to instantiate. */ #define MLX5_REPRESENTOR "representor" /* Device parameter to configure the maximum number of dump files per queue. */ #define MLX5_MAX_DUMP_FILES_NUM "max_dump_files_num" /* Configure timeout of LRO session (in microseconds). */ #define MLX5_LRO_TIMEOUT_USEC "lro_timeout_usec" #ifndef HAVE_IBV_MLX5_MOD_MPW #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2) #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3) #endif #ifndef HAVE_IBV_MLX5_MOD_CQE_128B_COMP #define MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP (1 << 4) #endif static const char *MZ_MLX5_PMD_SHARED_DATA = "mlx5_pmd_shared_data"; /* Shared memory between primary and secondary processes. */ struct mlx5_shared_data *mlx5_shared_data; /* Spinlock for mlx5_shared_data allocation. */ static rte_spinlock_t mlx5_shared_data_lock = RTE_SPINLOCK_INITIALIZER; /* Process local data for secondary processes. */ static struct mlx5_local_data mlx5_local_data; /** Driver-specific log messages type. */ int mlx5_logtype; /** Data associated with devices to spawn. */ struct mlx5_dev_spawn_data { uint32_t ifindex; /**< Network interface index. */ uint32_t max_port; /**< IB device maximal port index. */ uint32_t ibv_port; /**< IB device physical port index. */ int pf_bond; /**< bonding device PF index. < 0 - no bonding */ struct mlx5_switch_info info; /**< Switch information. */ struct ibv_device *ibv_dev; /**< Associated IB device. */ struct rte_eth_dev *eth_dev; /**< Associated Ethernet device. */ struct rte_pci_device *pci_dev; /**< Backend PCI device. */ }; static LIST_HEAD(, mlx5_ibv_shared) mlx5_ibv_list = LIST_HEAD_INITIALIZER(); static pthread_mutex_t mlx5_ibv_list_mutex = PTHREAD_MUTEX_INITIALIZER; #define MLX5_FLOW_MIN_ID_POOL_SIZE 512 #define MLX5_ID_GENERATION_ARRAY_FACTOR 16 #define MLX5_FLOW_TABLE_HLIST_ARRAY_SIZE 4096 #define MLX5_TAGS_HLIST_ARRAY_SIZE 8192 /** * Allocate ID pool structure. * * @param[in] max_id * The maximum id can be allocated from the pool. * * @return * Pointer to pool object, NULL value otherwise. */ struct mlx5_flow_id_pool * mlx5_flow_id_pool_alloc(uint32_t max_id) { struct mlx5_flow_id_pool *pool; void *mem; pool = rte_zmalloc("id pool allocation", sizeof(*pool), RTE_CACHE_LINE_SIZE); if (!pool) { DRV_LOG(ERR, "can't allocate id pool"); rte_errno = ENOMEM; return NULL; } mem = rte_zmalloc("", MLX5_FLOW_MIN_ID_POOL_SIZE * sizeof(uint32_t), RTE_CACHE_LINE_SIZE); if (!mem) { DRV_LOG(ERR, "can't allocate mem for id pool"); rte_errno = ENOMEM; goto error; } pool->free_arr = mem; pool->curr = pool->free_arr; pool->last = pool->free_arr + MLX5_FLOW_MIN_ID_POOL_SIZE; pool->base_index = 0; pool->max_id = max_id; return pool; error: rte_free(pool); return NULL; } /** * Release ID pool structure. * * @param[in] pool * Pointer to flow id pool object to free. */ void mlx5_flow_id_pool_release(struct mlx5_flow_id_pool *pool) { rte_free(pool->free_arr); rte_free(pool); } /** * Generate ID. * * @param[in] pool * Pointer to flow id pool. * @param[out] id * The generated ID. * * @return * 0 on success, error value otherwise. */ uint32_t mlx5_flow_id_get(struct mlx5_flow_id_pool *pool, uint32_t *id) { if (pool->curr == pool->free_arr) { if (pool->base_index == pool->max_id) { rte_errno = ENOMEM; DRV_LOG(ERR, "no free id"); return -rte_errno; } *id = ++pool->base_index; return 0; } *id = *(--pool->curr); return 0; } /** * Release ID. * * @param[in] pool * Pointer to flow id pool. * @param[out] id * The generated ID. * * @return * 0 on success, error value otherwise. */ uint32_t mlx5_flow_id_release(struct mlx5_flow_id_pool *pool, uint32_t id) { uint32_t size; uint32_t size2; void *mem; if (pool->curr == pool->last) { size = pool->curr - pool->free_arr; size2 = size * MLX5_ID_GENERATION_ARRAY_FACTOR; assert(size2 > size); mem = rte_malloc("", size2 * sizeof(uint32_t), 0); if (!mem) { DRV_LOG(ERR, "can't allocate mem for id pool"); rte_errno = ENOMEM; return -rte_errno; } memcpy(mem, pool->free_arr, size * sizeof(uint32_t)); rte_free(pool->free_arr); pool->free_arr = mem; pool->curr = pool->free_arr + size; pool->last = pool->free_arr + size2; } *pool->curr = id; pool->curr++; return 0; } /** * Initialize the counters management structure. * * @param[in] sh * Pointer to mlx5_ibv_shared object to free */ static void mlx5_flow_counters_mng_init(struct mlx5_ibv_shared *sh) { uint8_t i; TAILQ_INIT(&sh->cmng.flow_counters); for (i = 0; i < RTE_DIM(sh->cmng.ccont); ++i) TAILQ_INIT(&sh->cmng.ccont[i].pool_list); } /** * Destroy all the resources allocated for a counter memory management. * * @param[in] mng * Pointer to the memory management structure. */ static void mlx5_flow_destroy_counter_stat_mem_mng(struct mlx5_counter_stats_mem_mng *mng) { uint8_t *mem = (uint8_t *)(uintptr_t)mng->raws[0].data; LIST_REMOVE(mng, next); claim_zero(mlx5_devx_cmd_destroy(mng->dm)); claim_zero(mlx5_glue->devx_umem_dereg(mng->umem)); rte_free(mem); } /** * Close and release all the resources of the counters management. * * @param[in] sh * Pointer to mlx5_ibv_shared object to free. */ static void mlx5_flow_counters_mng_close(struct mlx5_ibv_shared *sh) { struct mlx5_counter_stats_mem_mng *mng; uint8_t i; int j; int retries = 1024; rte_errno = 0; while (--retries) { rte_eal_alarm_cancel(mlx5_flow_query_alarm, sh); if (rte_errno != EINPROGRESS) break; rte_pause(); } for (i = 0; i < RTE_DIM(sh->cmng.ccont); ++i) { struct mlx5_flow_counter_pool *pool; uint32_t batch = !!(i % 2); if (!sh->cmng.ccont[i].pools) continue; pool = TAILQ_FIRST(&sh->cmng.ccont[i].pool_list); while (pool) { if (batch) { if (pool->min_dcs) claim_zero (mlx5_devx_cmd_destroy(pool->min_dcs)); } for (j = 0; j < MLX5_COUNTERS_PER_POOL; ++j) { if (pool->counters_raw[j].action) claim_zero (mlx5_glue->destroy_flow_action (pool->counters_raw[j].action)); if (!batch && pool->counters_raw[j].dcs) claim_zero(mlx5_devx_cmd_destroy (pool->counters_raw[j].dcs)); } TAILQ_REMOVE(&sh->cmng.ccont[i].pool_list, pool, next); rte_free(pool); pool = TAILQ_FIRST(&sh->cmng.ccont[i].pool_list); } rte_free(sh->cmng.ccont[i].pools); } mng = LIST_FIRST(&sh->cmng.mem_mngs); while (mng) { mlx5_flow_destroy_counter_stat_mem_mng(mng); mng = LIST_FIRST(&sh->cmng.mem_mngs); } memset(&sh->cmng, 0, sizeof(sh->cmng)); } /** * Extract pdn of PD object using DV API. * * @param[in] pd * Pointer to the verbs PD object. * @param[out] pdn * Pointer to the PD object number variable. * * @return * 0 on success, error value otherwise. */ #ifdef HAVE_IBV_FLOW_DV_SUPPORT static int mlx5_get_pdn(struct ibv_pd *pd __rte_unused, uint32_t *pdn __rte_unused) { struct mlx5dv_obj obj; struct mlx5dv_pd pd_info; int ret = 0; obj.pd.in = pd; obj.pd.out = &pd_info; ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_PD); if (ret) { DRV_LOG(DEBUG, "Fail to get PD object info"); return ret; } *pdn = pd_info.pdn; return 0; } #endif /* HAVE_IBV_FLOW_DV_SUPPORT */ static int mlx5_config_doorbell_mapping_env(const struct mlx5_dev_config *config) { char *env; int value; assert(rte_eal_process_type() == RTE_PROC_PRIMARY); /* Get environment variable to store. */ env = getenv(MLX5_SHUT_UP_BF); value = env ? !!strcmp(env, "0") : MLX5_ARG_UNSET; if (config->dbnc == MLX5_ARG_UNSET) setenv(MLX5_SHUT_UP_BF, MLX5_SHUT_UP_BF_DEFAULT, 1); else setenv(MLX5_SHUT_UP_BF, config->dbnc == MLX5_TXDB_NCACHED ? "1" : "0", 1); return value; } static void mlx5_restore_doorbell_mapping_env(int value) { assert(rte_eal_process_type() == RTE_PROC_PRIMARY); /* Restore the original environment variable state. */ if (value == MLX5_ARG_UNSET) unsetenv(MLX5_SHUT_UP_BF); else setenv(MLX5_SHUT_UP_BF, value ? "1" : "0", 1); } /** * Allocate shared IB device context. If there is multiport device the * master and representors will share this context, if there is single * port dedicated IB device, the context will be used by only given * port due to unification. * * Routine first searches the context for the specified IB device name, * if found the shared context assumed and reference counter is incremented. * If no context found the new one is created and initialized with specified * IB device context and parameters. * * @param[in] spawn * Pointer to the IB device attributes (name, port, etc). * @param[in] config * Pointer to device configuration structure. * * @return * Pointer to mlx5_ibv_shared object on success, * otherwise NULL and rte_errno is set. */ static struct mlx5_ibv_shared * mlx5_alloc_shared_ibctx(const struct mlx5_dev_spawn_data *spawn, const struct mlx5_dev_config *config) { struct mlx5_ibv_shared *sh; int dbmap_env; int err = 0; uint32_t i; #ifdef HAVE_IBV_FLOW_DV_SUPPORT struct mlx5_devx_tis_attr tis_attr = { 0 }; #endif assert(spawn); /* Secondary process should not create the shared context. */ assert(rte_eal_process_type() == RTE_PROC_PRIMARY); pthread_mutex_lock(&mlx5_ibv_list_mutex); /* Search for IB context by device name. */ LIST_FOREACH(sh, &mlx5_ibv_list, next) { if (!strcmp(sh->ibdev_name, spawn->ibv_dev->name)) { sh->refcnt++; goto exit; } } /* No device found, we have to create new shared context. */ assert(spawn->max_port); sh = rte_zmalloc("ethdev shared ib context", sizeof(struct mlx5_ibv_shared) + spawn->max_port * sizeof(struct mlx5_ibv_shared_port), RTE_CACHE_LINE_SIZE); if (!sh) { DRV_LOG(ERR, "shared context allocation failure"); rte_errno = ENOMEM; goto exit; } /* * Configure environment variable "MLX5_BF_SHUT_UP" * before the device creation. The rdma_core library * checks the variable at device creation and * stores the result internally. */ dbmap_env = mlx5_config_doorbell_mapping_env(config); /* Try to open IB device with DV first, then usual Verbs. */ errno = 0; sh->ctx = mlx5_glue->dv_open_device(spawn->ibv_dev); if (sh->ctx) { sh->devx = 1; DRV_LOG(DEBUG, "DevX is supported"); /* The device is created, no need for environment. */ mlx5_restore_doorbell_mapping_env(dbmap_env); } else { /* The environment variable is still configured. */ sh->ctx = mlx5_glue->open_device(spawn->ibv_dev); err = errno ? errno : ENODEV; /* * The environment variable is not needed anymore, * all device creation attempts are completed. */ mlx5_restore_doorbell_mapping_env(dbmap_env); if (!sh->ctx) goto error; DRV_LOG(DEBUG, "DevX is NOT supported"); } err = mlx5_glue->query_device_ex(sh->ctx, NULL, &sh->device_attr); if (err) { DRV_LOG(DEBUG, "ibv_query_device_ex() failed"); goto error; } sh->refcnt = 1; sh->max_port = spawn->max_port; strncpy(sh->ibdev_name, sh->ctx->device->name, sizeof(sh->ibdev_name)); strncpy(sh->ibdev_path, sh->ctx->device->ibdev_path, sizeof(sh->ibdev_path)); pthread_mutex_init(&sh->intr_mutex, NULL); /* * Setting port_id to max unallowed value means * there is no interrupt subhandler installed for * the given port index i. */ for (i = 0; i < sh->max_port; i++) { sh->port[i].ih_port_id = RTE_MAX_ETHPORTS; sh->port[i].devx_ih_port_id = RTE_MAX_ETHPORTS; } sh->pd = mlx5_glue->alloc_pd(sh->ctx); if (sh->pd == NULL) { DRV_LOG(ERR, "PD allocation failure"); err = ENOMEM; goto error; } #ifdef HAVE_IBV_FLOW_DV_SUPPORT if (sh->devx) { err = mlx5_get_pdn(sh->pd, &sh->pdn); if (err) { DRV_LOG(ERR, "Fail to extract pdn from PD"); goto error; } sh->td = mlx5_devx_cmd_create_td(sh->ctx); if (!sh->td) { DRV_LOG(ERR, "TD allocation failure"); err = ENOMEM; goto error; } tis_attr.transport_domain = sh->td->id; sh->tis = mlx5_devx_cmd_create_tis(sh->ctx, &tis_attr); if (!sh->tis) { DRV_LOG(ERR, "TIS allocation failure"); err = ENOMEM; goto error; } } sh->flow_id_pool = mlx5_flow_id_pool_alloc(UINT32_MAX); if (!sh->flow_id_pool) { DRV_LOG(ERR, "can't create flow id pool"); err = ENOMEM; goto error; } #endif /* HAVE_IBV_FLOW_DV_SUPPORT */ /* * Once the device is added to the list of memory event * callback, its global MR cache table cannot be expanded * on the fly because of deadlock. If it overflows, lookup * should be done by searching MR list linearly, which is slow. * * At this point the device is not added to the memory * event list yet, context is just being created. */ err = mlx5_mr_btree_init(&sh->mr.cache, MLX5_MR_BTREE_CACHE_N * 2, spawn->pci_dev->device.numa_node); if (err) { err = rte_errno; goto error; } mlx5_flow_counters_mng_init(sh); /* Add device to memory callback list. */ rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock); LIST_INSERT_HEAD(&mlx5_shared_data->mem_event_cb_list, sh, mem_event_cb); rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock); /* Add context to the global device list. */ LIST_INSERT_HEAD(&mlx5_ibv_list, sh, next); exit: pthread_mutex_unlock(&mlx5_ibv_list_mutex); return sh; error: pthread_mutex_unlock(&mlx5_ibv_list_mutex); assert(sh); if (sh->tis) claim_zero(mlx5_devx_cmd_destroy(sh->tis)); if (sh->td) claim_zero(mlx5_devx_cmd_destroy(sh->td)); if (sh->pd) claim_zero(mlx5_glue->dealloc_pd(sh->pd)); if (sh->ctx) claim_zero(mlx5_glue->close_device(sh->ctx)); if (sh->flow_id_pool) mlx5_flow_id_pool_release(sh->flow_id_pool); rte_free(sh); assert(err > 0); rte_errno = err; return NULL; } /** * Free shared IB device context. Decrement counter and if zero free * all allocated resources and close handles. * * @param[in] sh * Pointer to mlx5_ibv_shared object to free */ static void mlx5_free_shared_ibctx(struct mlx5_ibv_shared *sh) { pthread_mutex_lock(&mlx5_ibv_list_mutex); #ifndef NDEBUG /* Check the object presence in the list. */ struct mlx5_ibv_shared *lctx; LIST_FOREACH(lctx, &mlx5_ibv_list, next) if (lctx == sh) break; assert(lctx); if (lctx != sh) { DRV_LOG(ERR, "Freeing non-existing shared IB context"); goto exit; } #endif assert(sh); assert(sh->refcnt); /* Secondary process should not free the shared context. */ assert(rte_eal_process_type() == RTE_PROC_PRIMARY); if (--sh->refcnt) goto exit; /* Release created Memory Regions. */ mlx5_mr_release(sh); /* Remove from memory callback device list. */ rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock); LIST_REMOVE(sh, mem_event_cb); rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock); /* Remove context from the global device list. */ LIST_REMOVE(sh, next); /* * Ensure there is no async event handler installed. * Only primary process handles async device events. **/ mlx5_flow_counters_mng_close(sh); assert(!sh->intr_cnt); if (sh->intr_cnt) mlx5_intr_callback_unregister (&sh->intr_handle, mlx5_dev_interrupt_handler, sh); #ifdef HAVE_MLX5_DEVX_ASYNC_SUPPORT if (sh->devx_intr_cnt) { if (sh->intr_handle_devx.fd) rte_intr_callback_unregister(&sh->intr_handle_devx, mlx5_dev_interrupt_handler_devx, sh); if (sh->devx_comp) mlx5dv_devx_destroy_cmd_comp(sh->devx_comp); } #endif pthread_mutex_destroy(&sh->intr_mutex); if (sh->pd) claim_zero(mlx5_glue->dealloc_pd(sh->pd)); if (sh->tis) claim_zero(mlx5_devx_cmd_destroy(sh->tis)); if (sh->td) claim_zero(mlx5_devx_cmd_destroy(sh->td)); if (sh->ctx) claim_zero(mlx5_glue->close_device(sh->ctx)); if (sh->flow_id_pool) mlx5_flow_id_pool_release(sh->flow_id_pool); rte_free(sh); exit: pthread_mutex_unlock(&mlx5_ibv_list_mutex); } /** * Destroy table hash list and all the root entries per domain. * * @param[in] priv * Pointer to the private device data structure. */ static void mlx5_free_table_hash_list(struct mlx5_priv *priv) { struct mlx5_ibv_shared *sh = priv->sh; struct mlx5_flow_tbl_data_entry *tbl_data; union mlx5_flow_tbl_key table_key = { { .table_id = 0, .reserved = 0, .domain = 0, .direction = 0, } }; struct mlx5_hlist_entry *pos; if (!sh->flow_tbls) return; pos = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64); if (pos) { tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry, entry); assert(tbl_data); mlx5_hlist_remove(sh->flow_tbls, pos); rte_free(tbl_data); } table_key.direction = 1; pos = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64); if (pos) { tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry, entry); assert(tbl_data); mlx5_hlist_remove(sh->flow_tbls, pos); rte_free(tbl_data); } table_key.direction = 0; table_key.domain = 1; pos = mlx5_hlist_lookup(sh->flow_tbls, table_key.v64); if (pos) { tbl_data = container_of(pos, struct mlx5_flow_tbl_data_entry, entry); assert(tbl_data); mlx5_hlist_remove(sh->flow_tbls, pos); rte_free(tbl_data); } mlx5_hlist_destroy(sh->flow_tbls, NULL, NULL); } /** * Initialize flow table hash list and create the root tables entry * for each domain. * * @param[in] priv * Pointer to the private device data structure. * * @return * Zero on success, positive error code otherwise. */ static int mlx5_alloc_table_hash_list(struct mlx5_priv *priv) { struct mlx5_ibv_shared *sh = priv->sh; char s[MLX5_HLIST_NAMESIZE]; int err = 0; assert(sh); snprintf(s, sizeof(s), "%s_flow_table", priv->sh->ibdev_name); sh->flow_tbls = mlx5_hlist_create(s, MLX5_FLOW_TABLE_HLIST_ARRAY_SIZE); if (!sh->flow_tbls) { DRV_LOG(ERR, "flow tables with hash creation failed.\n"); err = ENOMEM; return err; } #ifndef HAVE_MLX5DV_DR /* * In case we have not DR support, the zero tables should be created * because DV expect to see them even if they cannot be created by * RDMA-CORE. */ union mlx5_flow_tbl_key table_key = { { .table_id = 0, .reserved = 0, .domain = 0, .direction = 0, } }; struct mlx5_flow_tbl_data_entry *tbl_data = rte_zmalloc(NULL, sizeof(*tbl_data), 0); if (!tbl_data) { err = ENOMEM; goto error; } tbl_data->entry.key = table_key.v64; err = mlx5_hlist_insert(sh->flow_tbls, &tbl_data->entry); if (err) goto error; rte_atomic32_init(&tbl_data->tbl.refcnt); rte_atomic32_inc(&tbl_data->tbl.refcnt); table_key.direction = 1; tbl_data = rte_zmalloc(NULL, sizeof(*tbl_data), 0); if (!tbl_data) { err = ENOMEM; goto error; } tbl_data->entry.key = table_key.v64; err = mlx5_hlist_insert(sh->flow_tbls, &tbl_data->entry); if (err) goto error; rte_atomic32_init(&tbl_data->tbl.refcnt); rte_atomic32_inc(&tbl_data->tbl.refcnt); table_key.direction = 0; table_key.domain = 1; tbl_data = rte_zmalloc(NULL, sizeof(*tbl_data), 0); if (!tbl_data) { err = ENOMEM; goto error; } tbl_data->entry.key = table_key.v64; err = mlx5_hlist_insert(sh->flow_tbls, &tbl_data->entry); if (err) goto error; rte_atomic32_init(&tbl_data->tbl.refcnt); rte_atomic32_inc(&tbl_data->tbl.refcnt); return err; error: mlx5_free_table_hash_list(priv); #endif /* HAVE_MLX5DV_DR */ return err; } /** * Initialize DR related data within private structure. * Routine checks the reference counter and does actual * resources creation/initialization only if counter is zero. * * @param[in] priv * Pointer to the private device data structure. * * @return * Zero on success, positive error code otherwise. */ static int mlx5_alloc_shared_dr(struct mlx5_priv *priv) { struct mlx5_ibv_shared *sh = priv->sh; char s[MLX5_HLIST_NAMESIZE]; int err = 0; if (!sh->flow_tbls) err = mlx5_alloc_table_hash_list(priv); else DRV_LOG(DEBUG, "sh->flow_tbls[%p] already created, reuse\n", (void *)sh->flow_tbls); if (err) return err; /* Create tags hash list table. */ snprintf(s, sizeof(s), "%s_tags", sh->ibdev_name); sh->tag_table = mlx5_hlist_create(s, MLX5_TAGS_HLIST_ARRAY_SIZE); if (!sh->tag_table) { DRV_LOG(ERR, "tags with hash creation failed.\n"); err = ENOMEM; goto error; } #ifdef HAVE_MLX5DV_DR void *domain; if (sh->dv_refcnt) { /* Shared DV/DR structures is already initialized. */ sh->dv_refcnt++; priv->dr_shared = 1; return 0; } /* Reference counter is zero, we should initialize structures. */ domain = mlx5_glue->dr_create_domain(sh->ctx, MLX5DV_DR_DOMAIN_TYPE_NIC_RX); if (!domain) { DRV_LOG(ERR, "ingress mlx5dv_dr_create_domain failed"); err = errno; goto error; } sh->rx_domain = domain; domain = mlx5_glue->dr_create_domain(sh->ctx, MLX5DV_DR_DOMAIN_TYPE_NIC_TX); if (!domain) { DRV_LOG(ERR, "egress mlx5dv_dr_create_domain failed"); err = errno; goto error; } pthread_mutex_init(&sh->dv_mutex, NULL); sh->tx_domain = domain; #ifdef HAVE_MLX5DV_DR_ESWITCH if (priv->config.dv_esw_en) { domain = mlx5_glue->dr_create_domain (sh->ctx, MLX5DV_DR_DOMAIN_TYPE_FDB); if (!domain) { DRV_LOG(ERR, "FDB mlx5dv_dr_create_domain failed"); err = errno; goto error; } sh->fdb_domain = domain; sh->esw_drop_action = mlx5_glue->dr_create_flow_action_drop(); } #endif sh->pop_vlan_action = mlx5_glue->dr_create_flow_action_pop_vlan(); #endif /* HAVE_MLX5DV_DR */ sh->dv_refcnt++; priv->dr_shared = 1; return 0; error: /* Rollback the created objects. */ if (sh->rx_domain) { mlx5_glue->dr_destroy_domain(sh->rx_domain); sh->rx_domain = NULL; } if (sh->tx_domain) { mlx5_glue->dr_destroy_domain(sh->tx_domain); sh->tx_domain = NULL; } if (sh->fdb_domain) { mlx5_glue->dr_destroy_domain(sh->fdb_domain); sh->fdb_domain = NULL; } if (sh->esw_drop_action) { mlx5_glue->destroy_flow_action(sh->esw_drop_action); sh->esw_drop_action = NULL; } if (sh->pop_vlan_action) { mlx5_glue->destroy_flow_action(sh->pop_vlan_action); sh->pop_vlan_action = NULL; } if (sh->tag_table) { /* tags should be destroyed with flow before. */ mlx5_hlist_destroy(sh->tag_table, NULL, NULL); sh->tag_table = NULL; } mlx5_free_table_hash_list(priv); return err; } /** * Destroy DR related data within private structure. * * @param[in] priv * Pointer to the private device data structure. */ static void mlx5_free_shared_dr(struct mlx5_priv *priv) { struct mlx5_ibv_shared *sh; if (!priv->dr_shared) return; priv->dr_shared = 0; sh = priv->sh; assert(sh); #ifdef HAVE_MLX5DV_DR assert(sh->dv_refcnt); if (sh->dv_refcnt && --sh->dv_refcnt) return; if (sh->rx_domain) { mlx5_glue->dr_destroy_domain(sh->rx_domain); sh->rx_domain = NULL; } if (sh->tx_domain) { mlx5_glue->dr_destroy_domain(sh->tx_domain); sh->tx_domain = NULL; } #ifdef HAVE_MLX5DV_DR_ESWITCH if (sh->fdb_domain) { mlx5_glue->dr_destroy_domain(sh->fdb_domain); sh->fdb_domain = NULL; } if (sh->esw_drop_action) { mlx5_glue->destroy_flow_action(sh->esw_drop_action); sh->esw_drop_action = NULL; } #endif if (sh->pop_vlan_action) { mlx5_glue->destroy_flow_action(sh->pop_vlan_action); sh->pop_vlan_action = NULL; } pthread_mutex_destroy(&sh->dv_mutex); #endif /* HAVE_MLX5DV_DR */ if (sh->tag_table) { /* tags should be destroyed with flow before. */ mlx5_hlist_destroy(sh->tag_table, NULL, NULL); sh->tag_table = NULL; } mlx5_free_table_hash_list(priv); } /** * Initialize shared data between primary and secondary process. * * A memzone is reserved by primary process and secondary processes attach to * the memzone. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_init_shared_data(void) { const struct rte_memzone *mz; int ret = 0; rte_spinlock_lock(&mlx5_shared_data_lock); if (mlx5_shared_data == NULL) { if (rte_eal_process_type() == RTE_PROC_PRIMARY) { /* Allocate shared memory. */ mz = rte_memzone_reserve(MZ_MLX5_PMD_SHARED_DATA, sizeof(*mlx5_shared_data), SOCKET_ID_ANY, 0); if (mz == NULL) { DRV_LOG(ERR, "Cannot allocate mlx5 shared data"); ret = -rte_errno; goto error; } mlx5_shared_data = mz->addr; memset(mlx5_shared_data, 0, sizeof(*mlx5_shared_data)); rte_spinlock_init(&mlx5_shared_data->lock); } else { /* Lookup allocated shared memory. */ mz = rte_memzone_lookup(MZ_MLX5_PMD_SHARED_DATA); if (mz == NULL) { DRV_LOG(ERR, "Cannot attach mlx5 shared data"); ret = -rte_errno; goto error; } mlx5_shared_data = mz->addr; memset(&mlx5_local_data, 0, sizeof(mlx5_local_data)); } } error: rte_spinlock_unlock(&mlx5_shared_data_lock); return ret; } /** * Retrieve integer value from environment variable. * * @param[in] name * Environment variable name. * * @return * Integer value, 0 if the variable is not set. */ int mlx5_getenv_int(const char *name) { const char *val = getenv(name); if (val == NULL) return 0; return atoi(val); } /** * Verbs callback to allocate a memory. This function should allocate the space * according to the size provided residing inside a huge page. * Please note that all allocation must respect the alignment from libmlx5 * (i.e. currently sysconf(_SC_PAGESIZE)). * * @param[in] size * The size in bytes of the memory to allocate. * @param[in] data * A pointer to the callback data. * * @return * Allocated buffer, NULL otherwise and rte_errno is set. */ static void * mlx5_alloc_verbs_buf(size_t size, void *data) { struct mlx5_priv *priv = data; void *ret; size_t alignment = sysconf(_SC_PAGESIZE); unsigned int socket = SOCKET_ID_ANY; if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_TX_QUEUE) { const struct mlx5_txq_ctrl *ctrl = priv->verbs_alloc_ctx.obj; socket = ctrl->socket; } else if (priv->verbs_alloc_ctx.type == MLX5_VERBS_ALLOC_TYPE_RX_QUEUE) { const struct mlx5_rxq_ctrl *ctrl = priv->verbs_alloc_ctx.obj; socket = ctrl->socket; } assert(data != NULL); ret = rte_malloc_socket(__func__, size, alignment, socket); if (!ret && size) rte_errno = ENOMEM; return ret; } /** * Verbs callback to free a memory. * * @param[in] ptr * A pointer to the memory to free. * @param[in] data * A pointer to the callback data. */ static void mlx5_free_verbs_buf(void *ptr, void *data __rte_unused) { assert(data != NULL); rte_free(ptr); } /** * DPDK callback to add udp tunnel port * * @param[in] dev * A pointer to eth_dev * @param[in] udp_tunnel * A pointer to udp tunnel * * @return * 0 on valid udp ports and tunnels, -ENOTSUP otherwise. */ int mlx5_udp_tunnel_port_add(struct rte_eth_dev *dev __rte_unused, struct rte_eth_udp_tunnel *udp_tunnel) { assert(udp_tunnel != NULL); if (udp_tunnel->prot_type == RTE_TUNNEL_TYPE_VXLAN && udp_tunnel->udp_port == 4789) return 0; if (udp_tunnel->prot_type == RTE_TUNNEL_TYPE_VXLAN_GPE && udp_tunnel->udp_port == 4790) return 0; return -ENOTSUP; } /** * Initialize process private data structure. * * @param dev * Pointer to Ethernet device structure. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_proc_priv_init(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_proc_priv *ppriv; size_t ppriv_size; /* * UAR register table follows the process private structure. BlueFlame * registers for Tx queues are stored in the table. */ ppriv_size = sizeof(struct mlx5_proc_priv) + priv->txqs_n * sizeof(void *); ppriv = rte_malloc_socket("mlx5_proc_priv", ppriv_size, RTE_CACHE_LINE_SIZE, dev->device->numa_node); if (!ppriv) { rte_errno = ENOMEM; return -rte_errno; } ppriv->uar_table_sz = ppriv_size; dev->process_private = ppriv; return 0; } /** * Un-initialize process private data structure. * * @param dev * Pointer to Ethernet device structure. */ static void mlx5_proc_priv_uninit(struct rte_eth_dev *dev) { if (!dev->process_private) return; rte_free(dev->process_private); dev->process_private = NULL; } /** * DPDK callback to close the device. * * Destroy all queues and objects, free memory. * * @param dev * Pointer to Ethernet device structure. */ static void mlx5_dev_close(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; unsigned int i; int ret; DRV_LOG(DEBUG, "port %u closing device \"%s\"", dev->data->port_id, ((priv->sh->ctx != NULL) ? priv->sh->ctx->device->name : "")); /* In case mlx5_dev_stop() has not been called. */ mlx5_dev_interrupt_handler_uninstall(dev); mlx5_dev_interrupt_handler_devx_uninstall(dev); mlx5_traffic_disable(dev); mlx5_flow_flush(dev, NULL); mlx5_flow_meter_flush(dev, NULL); /* Prevent crashes when queues are still in use. */ dev->rx_pkt_burst = removed_rx_burst; dev->tx_pkt_burst = removed_tx_burst; rte_wmb(); /* Disable datapath on secondary process. */ mlx5_mp_req_stop_rxtx(dev); if (priv->rxqs != NULL) { /* XXX race condition if mlx5_rx_burst() is still running. */ usleep(1000); for (i = 0; (i != priv->rxqs_n); ++i) mlx5_rxq_release(dev, i); priv->rxqs_n = 0; priv->rxqs = NULL; } if (priv->txqs != NULL) { /* XXX race condition if mlx5_tx_burst() is still running. */ usleep(1000); for (i = 0; (i != priv->txqs_n); ++i) mlx5_txq_release(dev, i); priv->txqs_n = 0; priv->txqs = NULL; } mlx5_proc_priv_uninit(dev); if (priv->mreg_cp_tbl) mlx5_hlist_destroy(priv->mreg_cp_tbl, NULL, NULL); mlx5_mprq_free_mp(dev); mlx5_free_shared_dr(priv); if (priv->rss_conf.rss_key != NULL) rte_free(priv->rss_conf.rss_key); if (priv->reta_idx != NULL) rte_free(priv->reta_idx); if (priv->config.vf) mlx5_nl_mac_addr_flush(dev); if (priv->nl_socket_route >= 0) close(priv->nl_socket_route); if (priv->nl_socket_rdma >= 0) close(priv->nl_socket_rdma); if (priv->vmwa_context) mlx5_vlan_vmwa_exit(priv->vmwa_context); if (priv->sh) { /* * Free the shared context in last turn, because the cleanup * routines above may use some shared fields, like * mlx5_nl_mac_addr_flush() uses ibdev_path for retrieveing * ifindex if Netlink fails. */ mlx5_free_shared_ibctx(priv->sh); priv->sh = NULL; } ret = mlx5_hrxq_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some hash Rx queue still remain", dev->data->port_id); ret = mlx5_ind_table_obj_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some indirection table still remain", dev->data->port_id); ret = mlx5_rxq_obj_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some Rx queue objects still remain", dev->data->port_id); ret = mlx5_rxq_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some Rx queues still remain", dev->data->port_id); ret = mlx5_txq_obj_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some Verbs Tx queue still remain", dev->data->port_id); ret = mlx5_txq_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some Tx queues still remain", dev->data->port_id); ret = mlx5_flow_verify(dev); if (ret) DRV_LOG(WARNING, "port %u some flows still remain", dev->data->port_id); if (priv->domain_id != RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) { unsigned int c = 0; uint16_t port_id; MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { struct mlx5_priv *opriv = rte_eth_devices[port_id].data->dev_private; if (!opriv || opriv->domain_id != priv->domain_id || &rte_eth_devices[port_id] == dev) continue; ++c; break; } if (!c) claim_zero(rte_eth_switch_domain_free(priv->domain_id)); } memset(priv, 0, sizeof(*priv)); priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID; /* * Reset mac_addrs to NULL such that it is not freed as part of * rte_eth_dev_release_port(). mac_addrs is part of dev_private so * it is freed when dev_private is freed. */ dev->data->mac_addrs = NULL; } const struct eth_dev_ops mlx5_dev_ops = { .dev_configure = mlx5_dev_configure, .dev_start = mlx5_dev_start, .dev_stop = mlx5_dev_stop, .dev_set_link_down = mlx5_set_link_down, .dev_set_link_up = mlx5_set_link_up, .dev_close = mlx5_dev_close, .promiscuous_enable = mlx5_promiscuous_enable, .promiscuous_disable = mlx5_promiscuous_disable, .allmulticast_enable = mlx5_allmulticast_enable, .allmulticast_disable = mlx5_allmulticast_disable, .link_update = mlx5_link_update, .stats_get = mlx5_stats_get, .stats_reset = mlx5_stats_reset, .xstats_get = mlx5_xstats_get, .xstats_reset = mlx5_xstats_reset, .xstats_get_names = mlx5_xstats_get_names, .fw_version_get = mlx5_fw_version_get, .dev_infos_get = mlx5_dev_infos_get, .read_clock = mlx5_read_clock, .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get, .vlan_filter_set = mlx5_vlan_filter_set, .rx_queue_setup = mlx5_rx_queue_setup, .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup, .tx_queue_setup = mlx5_tx_queue_setup, .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup, .rx_queue_release = mlx5_rx_queue_release, .tx_queue_release = mlx5_tx_queue_release, .flow_ctrl_get = mlx5_dev_get_flow_ctrl, .flow_ctrl_set = mlx5_dev_set_flow_ctrl, .mac_addr_remove = mlx5_mac_addr_remove, .mac_addr_add = mlx5_mac_addr_add, .mac_addr_set = mlx5_mac_addr_set, .set_mc_addr_list = mlx5_set_mc_addr_list, .mtu_set = mlx5_dev_set_mtu, .vlan_strip_queue_set = mlx5_vlan_strip_queue_set, .vlan_offload_set = mlx5_vlan_offload_set, .reta_update = mlx5_dev_rss_reta_update, .reta_query = mlx5_dev_rss_reta_query, .rss_hash_update = mlx5_rss_hash_update, .rss_hash_conf_get = mlx5_rss_hash_conf_get, .filter_ctrl = mlx5_dev_filter_ctrl, .rx_descriptor_status = mlx5_rx_descriptor_status, .tx_descriptor_status = mlx5_tx_descriptor_status, .rx_queue_count = mlx5_rx_queue_count, .rx_queue_intr_enable = mlx5_rx_intr_enable, .rx_queue_intr_disable = mlx5_rx_intr_disable, .is_removed = mlx5_is_removed, .udp_tunnel_port_add = mlx5_udp_tunnel_port_add, .get_module_info = mlx5_get_module_info, .get_module_eeprom = mlx5_get_module_eeprom, .hairpin_cap_get = mlx5_hairpin_cap_get, .mtr_ops_get = mlx5_flow_meter_ops_get, }; /* Available operations from secondary process. */ static const struct eth_dev_ops mlx5_dev_sec_ops = { .stats_get = mlx5_stats_get, .stats_reset = mlx5_stats_reset, .xstats_get = mlx5_xstats_get, .xstats_reset = mlx5_xstats_reset, .xstats_get_names = mlx5_xstats_get_names, .fw_version_get = mlx5_fw_version_get, .dev_infos_get = mlx5_dev_infos_get, .rx_descriptor_status = mlx5_rx_descriptor_status, .tx_descriptor_status = mlx5_tx_descriptor_status, .get_module_info = mlx5_get_module_info, .get_module_eeprom = mlx5_get_module_eeprom, }; /* Available operations in flow isolated mode. */ const struct eth_dev_ops mlx5_dev_ops_isolate = { .dev_configure = mlx5_dev_configure, .dev_start = mlx5_dev_start, .dev_stop = mlx5_dev_stop, .dev_set_link_down = mlx5_set_link_down, .dev_set_link_up = mlx5_set_link_up, .dev_close = mlx5_dev_close, .promiscuous_enable = mlx5_promiscuous_enable, .promiscuous_disable = mlx5_promiscuous_disable, .allmulticast_enable = mlx5_allmulticast_enable, .allmulticast_disable = mlx5_allmulticast_disable, .link_update = mlx5_link_update, .stats_get = mlx5_stats_get, .stats_reset = mlx5_stats_reset, .xstats_get = mlx5_xstats_get, .xstats_reset = mlx5_xstats_reset, .xstats_get_names = mlx5_xstats_get_names, .fw_version_get = mlx5_fw_version_get, .dev_infos_get = mlx5_dev_infos_get, .dev_supported_ptypes_get = mlx5_dev_supported_ptypes_get, .vlan_filter_set = mlx5_vlan_filter_set, .rx_queue_setup = mlx5_rx_queue_setup, .rx_hairpin_queue_setup = mlx5_rx_hairpin_queue_setup, .tx_queue_setup = mlx5_tx_queue_setup, .tx_hairpin_queue_setup = mlx5_tx_hairpin_queue_setup, .rx_queue_release = mlx5_rx_queue_release, .tx_queue_release = mlx5_tx_queue_release, .flow_ctrl_get = mlx5_dev_get_flow_ctrl, .flow_ctrl_set = mlx5_dev_set_flow_ctrl, .mac_addr_remove = mlx5_mac_addr_remove, .mac_addr_add = mlx5_mac_addr_add, .mac_addr_set = mlx5_mac_addr_set, .set_mc_addr_list = mlx5_set_mc_addr_list, .mtu_set = mlx5_dev_set_mtu, .vlan_strip_queue_set = mlx5_vlan_strip_queue_set, .vlan_offload_set = mlx5_vlan_offload_set, .filter_ctrl = mlx5_dev_filter_ctrl, .rx_descriptor_status = mlx5_rx_descriptor_status, .tx_descriptor_status = mlx5_tx_descriptor_status, .rx_queue_intr_enable = mlx5_rx_intr_enable, .rx_queue_intr_disable = mlx5_rx_intr_disable, .is_removed = mlx5_is_removed, .get_module_info = mlx5_get_module_info, .get_module_eeprom = mlx5_get_module_eeprom, .hairpin_cap_get = mlx5_hairpin_cap_get, .mtr_ops_get = mlx5_flow_meter_ops_get, }; /** * Verify and store value for device argument. * * @param[in] key * Key argument to verify. * @param[in] val * Value associated with key. * @param opaque * User data. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_args_check(const char *key, const char *val, void *opaque) { struct mlx5_dev_config *config = opaque; unsigned long tmp; /* No-op, port representors are processed in mlx5_dev_spawn(). */ if (!strcmp(MLX5_REPRESENTOR, key)) return 0; errno = 0; tmp = strtoul(val, NULL, 0); if (errno) { rte_errno = errno; DRV_LOG(WARNING, "%s: \"%s\" is not a valid integer", key, val); return -rte_errno; } if (strcmp(MLX5_RXQ_CQE_COMP_EN, key) == 0) { config->cqe_comp = !!tmp; } else if (strcmp(MLX5_RXQ_CQE_PAD_EN, key) == 0) { config->cqe_pad = !!tmp; } else if (strcmp(MLX5_RXQ_PKT_PAD_EN, key) == 0) { config->hw_padding = !!tmp; } else if (strcmp(MLX5_RX_MPRQ_EN, key) == 0) { config->mprq.enabled = !!tmp; } else if (strcmp(MLX5_RX_MPRQ_LOG_STRIDE_NUM, key) == 0) { config->mprq.stride_num_n = tmp; } else if (strcmp(MLX5_RX_MPRQ_MAX_MEMCPY_LEN, key) == 0) { config->mprq.max_memcpy_len = tmp; } else if (strcmp(MLX5_RXQS_MIN_MPRQ, key) == 0) { config->mprq.min_rxqs_num = tmp; } else if (strcmp(MLX5_TXQ_INLINE, key) == 0) { DRV_LOG(WARNING, "%s: deprecated parameter," " converted to txq_inline_max", key); config->txq_inline_max = tmp; } else if (strcmp(MLX5_TXQ_INLINE_MAX, key) == 0) { config->txq_inline_max = tmp; } else if (strcmp(MLX5_TXQ_INLINE_MIN, key) == 0) { config->txq_inline_min = tmp; } else if (strcmp(MLX5_TXQ_INLINE_MPW, key) == 0) { config->txq_inline_mpw = tmp; } else if (strcmp(MLX5_TXQS_MIN_INLINE, key) == 0) { config->txqs_inline = tmp; } else if (strcmp(MLX5_TXQS_MAX_VEC, key) == 0) { DRV_LOG(WARNING, "%s: deprecated parameter, ignored", key); } else if (strcmp(MLX5_TXQ_MPW_EN, key) == 0) { config->mps = !!tmp; } else if (strcmp(MLX5_TX_DB_NC, key) == 0) { if (tmp != MLX5_TXDB_CACHED && tmp != MLX5_TXDB_NCACHED && tmp != MLX5_TXDB_HEURISTIC) { DRV_LOG(ERR, "invalid Tx doorbell " "mapping parameter"); rte_errno = EINVAL; return -rte_errno; } config->dbnc = tmp; } else if (strcmp(MLX5_TXQ_MPW_HDR_DSEG_EN, key) == 0) { DRV_LOG(WARNING, "%s: deprecated parameter, ignored", key); } else if (strcmp(MLX5_TXQ_MAX_INLINE_LEN, key) == 0) { DRV_LOG(WARNING, "%s: deprecated parameter," " converted to txq_inline_mpw", key); config->txq_inline_mpw = tmp; } else if (strcmp(MLX5_TX_VEC_EN, key) == 0) { DRV_LOG(WARNING, "%s: deprecated parameter, ignored", key); } else if (strcmp(MLX5_RX_VEC_EN, key) == 0) { config->rx_vec_en = !!tmp; } else if (strcmp(MLX5_L3_VXLAN_EN, key) == 0) { config->l3_vxlan_en = !!tmp; } else if (strcmp(MLX5_VF_NL_EN, key) == 0) { config->vf_nl_en = !!tmp; } else if (strcmp(MLX5_DV_ESW_EN, key) == 0) { config->dv_esw_en = !!tmp; } else if (strcmp(MLX5_DV_FLOW_EN, key) == 0) { config->dv_flow_en = !!tmp; } else if (strcmp(MLX5_DV_XMETA_EN, key) == 0) { if (tmp != MLX5_XMETA_MODE_LEGACY && tmp != MLX5_XMETA_MODE_META16 && tmp != MLX5_XMETA_MODE_META32) { DRV_LOG(ERR, "invalid extensive " "metadata parameter"); rte_errno = EINVAL; return -rte_errno; } config->dv_xmeta_en = tmp; } else if (strcmp(MLX5_MR_EXT_MEMSEG_EN, key) == 0) { config->mr_ext_memseg_en = !!tmp; } else if (strcmp(MLX5_MAX_DUMP_FILES_NUM, key) == 0) { config->max_dump_files_num = tmp; } else if (strcmp(MLX5_LRO_TIMEOUT_USEC, key) == 0) { config->lro.timeout = tmp; } else if (strcmp(MLX5_CLASS_ARG_NAME, key) == 0) { DRV_LOG(DEBUG, "class argument is %s.", val); } else { DRV_LOG(WARNING, "%s: unknown parameter", key); rte_errno = EINVAL; return -rte_errno; } return 0; } /** * Parse device parameters. * * @param config * Pointer to device configuration structure. * @param devargs * Device arguments structure. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs) { const char **params = (const char *[]){ MLX5_RXQ_CQE_COMP_EN, MLX5_RXQ_CQE_PAD_EN, MLX5_RXQ_PKT_PAD_EN, MLX5_RX_MPRQ_EN, MLX5_RX_MPRQ_LOG_STRIDE_NUM, MLX5_RX_MPRQ_MAX_MEMCPY_LEN, MLX5_RXQS_MIN_MPRQ, MLX5_TXQ_INLINE, MLX5_TXQ_INLINE_MIN, MLX5_TXQ_INLINE_MAX, MLX5_TXQ_INLINE_MPW, MLX5_TXQS_MIN_INLINE, MLX5_TXQS_MAX_VEC, MLX5_TXQ_MPW_EN, MLX5_TXQ_MPW_HDR_DSEG_EN, MLX5_TXQ_MAX_INLINE_LEN, MLX5_TX_DB_NC, MLX5_TX_VEC_EN, MLX5_RX_VEC_EN, MLX5_L3_VXLAN_EN, MLX5_VF_NL_EN, MLX5_DV_ESW_EN, MLX5_DV_FLOW_EN, MLX5_DV_XMETA_EN, MLX5_MR_EXT_MEMSEG_EN, MLX5_REPRESENTOR, MLX5_MAX_DUMP_FILES_NUM, MLX5_LRO_TIMEOUT_USEC, MLX5_CLASS_ARG_NAME, NULL, }; struct rte_kvargs *kvlist; int ret = 0; int i; if (devargs == NULL) return 0; /* Following UGLY cast is done to pass checkpatch. */ kvlist = rte_kvargs_parse(devargs->args, params); if (kvlist == NULL) { rte_errno = EINVAL; return -rte_errno; } /* Process parameters. */ for (i = 0; (params[i] != NULL); ++i) { if (rte_kvargs_count(kvlist, params[i])) { ret = rte_kvargs_process(kvlist, params[i], mlx5_args_check, config); if (ret) { rte_errno = EINVAL; rte_kvargs_free(kvlist); return -rte_errno; } } } rte_kvargs_free(kvlist); return 0; } static struct rte_pci_driver mlx5_driver; /** * PMD global initialization. * * Independent from individual device, this function initializes global * per-PMD data structures distinguishing primary and secondary processes. * Hence, each initialization is called once per a process. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_init_once(void) { struct mlx5_shared_data *sd; struct mlx5_local_data *ld = &mlx5_local_data; int ret = 0; if (mlx5_init_shared_data()) return -rte_errno; sd = mlx5_shared_data; assert(sd); rte_spinlock_lock(&sd->lock); switch (rte_eal_process_type()) { case RTE_PROC_PRIMARY: if (sd->init_done) break; LIST_INIT(&sd->mem_event_cb_list); rte_rwlock_init(&sd->mem_event_rwlock); rte_mem_event_callback_register("MLX5_MEM_EVENT_CB", mlx5_mr_mem_event_cb, NULL); ret = mlx5_mp_init_primary(); if (ret) goto out; sd->init_done = true; break; case RTE_PROC_SECONDARY: if (ld->init_done) break; ret = mlx5_mp_init_secondary(); if (ret) goto out; ++sd->secondary_cnt; ld->init_done = true; break; default: break; } out: rte_spinlock_unlock(&sd->lock); return ret; } /** * Configures the minimal amount of data to inline into WQE * while sending packets. * * - the txq_inline_min has the maximal priority, if this * key is specified in devargs * - if DevX is enabled the inline mode is queried from the * device (HCA attributes and NIC vport context if needed). * - otherwise L2 mode (18 bytes) is assumed for ConnectX-4/4LX * and none (0 bytes) for other NICs * * @param spawn * Verbs device parameters (name, port, switch_info) to spawn. * @param config * Device configuration parameters. */ static void mlx5_set_min_inline(struct mlx5_dev_spawn_data *spawn, struct mlx5_dev_config *config) { if (config->txq_inline_min != MLX5_ARG_UNSET) { /* Application defines size of inlined data explicitly. */ switch (spawn->pci_dev->id.device_id) { case PCI_DEVICE_ID_MELLANOX_CONNECTX4: case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF: if (config->txq_inline_min < (int)MLX5_INLINE_HSIZE_L2) { DRV_LOG(DEBUG, "txq_inline_mix aligned to minimal" " ConnectX-4 required value %d", (int)MLX5_INLINE_HSIZE_L2); config->txq_inline_min = MLX5_INLINE_HSIZE_L2; } break; } goto exit; } if (config->hca_attr.eth_net_offloads) { /* We have DevX enabled, inline mode queried successfully. */ switch (config->hca_attr.wqe_inline_mode) { case MLX5_CAP_INLINE_MODE_L2: /* outer L2 header must be inlined. */ config->txq_inline_min = MLX5_INLINE_HSIZE_L2; goto exit; case MLX5_CAP_INLINE_MODE_NOT_REQUIRED: /* No inline data are required by NIC. */ config->txq_inline_min = MLX5_INLINE_HSIZE_NONE; config->hw_vlan_insert = config->hca_attr.wqe_vlan_insert; DRV_LOG(DEBUG, "Tx VLAN insertion is supported"); goto exit; case MLX5_CAP_INLINE_MODE_VPORT_CONTEXT: /* inline mode is defined by NIC vport context. */ if (!config->hca_attr.eth_virt) break; switch (config->hca_attr.vport_inline_mode) { case MLX5_INLINE_MODE_NONE: config->txq_inline_min = MLX5_INLINE_HSIZE_NONE; goto exit; case MLX5_INLINE_MODE_L2: config->txq_inline_min = MLX5_INLINE_HSIZE_L2; goto exit; case MLX5_INLINE_MODE_IP: config->txq_inline_min = MLX5_INLINE_HSIZE_L3; goto exit; case MLX5_INLINE_MODE_TCP_UDP: config->txq_inline_min = MLX5_INLINE_HSIZE_L4; goto exit; case MLX5_INLINE_MODE_INNER_L2: config->txq_inline_min = MLX5_INLINE_HSIZE_INNER_L2; goto exit; case MLX5_INLINE_MODE_INNER_IP: config->txq_inline_min = MLX5_INLINE_HSIZE_INNER_L3; goto exit; case MLX5_INLINE_MODE_INNER_TCP_UDP: config->txq_inline_min = MLX5_INLINE_HSIZE_INNER_L4; goto exit; } } } /* * We get here if we are unable to deduce * inline data size with DevX. Try PCI ID * to determine old NICs. */ switch (spawn->pci_dev->id.device_id) { case PCI_DEVICE_ID_MELLANOX_CONNECTX4: case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF: case PCI_DEVICE_ID_MELLANOX_CONNECTX4LX: case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF: config->txq_inline_min = MLX5_INLINE_HSIZE_L2; config->hw_vlan_insert = 0; break; case PCI_DEVICE_ID_MELLANOX_CONNECTX5: case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF: case PCI_DEVICE_ID_MELLANOX_CONNECTX5EX: case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF: /* * These NICs support VLAN insertion from WQE and * report the wqe_vlan_insert flag. But there is the bug * and PFC control may be broken, so disable feature. */ config->hw_vlan_insert = 0; config->txq_inline_min = MLX5_INLINE_HSIZE_NONE; break; default: config->txq_inline_min = MLX5_INLINE_HSIZE_NONE; break; } exit: DRV_LOG(DEBUG, "min tx inline configured: %d", config->txq_inline_min); } /** * Configures the metadata mask fields in the shared context. * * @param [in] dev * Pointer to Ethernet device. */ static void mlx5_set_metadata_mask(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_ibv_shared *sh = priv->sh; uint32_t meta, mark, reg_c0; reg_c0 = ~priv->vport_meta_mask; switch (priv->config.dv_xmeta_en) { case MLX5_XMETA_MODE_LEGACY: meta = UINT32_MAX; mark = MLX5_FLOW_MARK_MASK; break; case MLX5_XMETA_MODE_META16: meta = reg_c0 >> rte_bsf32(reg_c0); mark = MLX5_FLOW_MARK_MASK; break; case MLX5_XMETA_MODE_META32: meta = UINT32_MAX; mark = (reg_c0 >> rte_bsf32(reg_c0)) & MLX5_FLOW_MARK_MASK; break; default: meta = 0; mark = 0; assert(false); break; } if (sh->dv_mark_mask && sh->dv_mark_mask != mark) DRV_LOG(WARNING, "metadata MARK mask mismatche %08X:%08X", sh->dv_mark_mask, mark); else sh->dv_mark_mask = mark; if (sh->dv_meta_mask && sh->dv_meta_mask != meta) DRV_LOG(WARNING, "metadata META mask mismatche %08X:%08X", sh->dv_meta_mask, meta); else sh->dv_meta_mask = meta; if (sh->dv_regc0_mask && sh->dv_regc0_mask != reg_c0) DRV_LOG(WARNING, "metadata reg_c0 mask mismatche %08X:%08X", sh->dv_meta_mask, reg_c0); else sh->dv_regc0_mask = reg_c0; DRV_LOG(DEBUG, "metadata mode %u", priv->config.dv_xmeta_en); DRV_LOG(DEBUG, "metadata MARK mask %08X", sh->dv_mark_mask); DRV_LOG(DEBUG, "metadata META mask %08X", sh->dv_meta_mask); DRV_LOG(DEBUG, "metadata reg_c0 mask %08X", sh->dv_regc0_mask); } /** * Allocate page of door-bells and register it using DevX API. * * @param [in] dev * Pointer to Ethernet device. * * @return * Pointer to new page on success, NULL otherwise. */ static struct mlx5_devx_dbr_page * mlx5_alloc_dbr_page(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_devx_dbr_page *page; /* Allocate space for door-bell page and management data. */ page = rte_calloc_socket(__func__, 1, sizeof(struct mlx5_devx_dbr_page), RTE_CACHE_LINE_SIZE, dev->device->numa_node); if (!page) { DRV_LOG(ERR, "port %u cannot allocate dbr page", dev->data->port_id); return NULL; } /* Register allocated memory. */ page->umem = mlx5_glue->devx_umem_reg(priv->sh->ctx, page->dbrs, MLX5_DBR_PAGE_SIZE, 0); if (!page->umem) { DRV_LOG(ERR, "port %u cannot umem reg dbr page", dev->data->port_id); rte_free(page); return NULL; } return page; } /** * Find the next available door-bell, allocate new page if needed. * * @param [in] dev * Pointer to Ethernet device. * @param [out] dbr_page * Door-bell page containing the page data. * * @return * Door-bell address offset on success, a negative error value otherwise. */ int64_t mlx5_get_dbr(struct rte_eth_dev *dev, struct mlx5_devx_dbr_page **dbr_page) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_devx_dbr_page *page = NULL; uint32_t i, j; LIST_FOREACH(page, &priv->dbrpgs, next) if (page->dbr_count < MLX5_DBR_PER_PAGE) break; if (!page) { /* No page with free door-bell exists. */ page = mlx5_alloc_dbr_page(dev); if (!page) /* Failed to allocate new page. */ return (-1); LIST_INSERT_HEAD(&priv->dbrpgs, page, next); } /* Loop to find bitmap part with clear bit. */ for (i = 0; i < MLX5_DBR_BITMAP_SIZE && page->dbr_bitmap[i] == UINT64_MAX; i++) ; /* Empty. */ /* Find the first clear bit. */ j = rte_bsf64(~page->dbr_bitmap[i]); assert(i < (MLX5_DBR_PER_PAGE / 64)); page->dbr_bitmap[i] |= (1 << j); page->dbr_count++; *dbr_page = page; return (((i * 64) + j) * sizeof(uint64_t)); } /** * Release a door-bell record. * * @param [in] dev * Pointer to Ethernet device. * @param [in] umem_id * UMEM ID of page containing the door-bell record to release. * @param [in] offset * Offset of door-bell record in page. * * @return * 0 on success, a negative error value otherwise. */ int32_t mlx5_release_dbr(struct rte_eth_dev *dev, uint32_t umem_id, uint64_t offset) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_devx_dbr_page *page = NULL; int ret = 0; LIST_FOREACH(page, &priv->dbrpgs, next) /* Find the page this address belongs to. */ if (page->umem->umem_id == umem_id) break; if (!page) return -EINVAL; page->dbr_count--; if (!page->dbr_count) { /* Page not used, free it and remove from list. */ LIST_REMOVE(page, next); if (page->umem) ret = -mlx5_glue->devx_umem_dereg(page->umem); rte_free(page); } else { /* Mark in bitmap that this door-bell is not in use. */ offset /= MLX5_DBR_SIZE; int i = offset / 64; int j = offset % 64; page->dbr_bitmap[i] &= ~(1 << j); } return ret; } /** * Check sibling device configurations. * * Sibling devices sharing the Infiniband device context * should have compatible configurations. This regards * representors and bonding slaves. * * @param priv * Private device descriptor. * @param config * Configuration of the device is going to be created. * * @return * 0 on success, EINVAL otherwise */ static int mlx5_dev_check_sibling_config(struct mlx5_priv *priv, struct mlx5_dev_config *config) { struct mlx5_ibv_shared *sh = priv->sh; struct mlx5_dev_config *sh_conf = NULL; uint16_t port_id; assert(sh); /* Nothing to compare for the single/first device. */ if (sh->refcnt == 1) return 0; /* Find the device with shared context. */ MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { struct mlx5_priv *opriv = rte_eth_devices[port_id].data->dev_private; if (opriv && opriv != priv && opriv->sh == sh) { sh_conf = &opriv->config; break; } } if (!sh_conf) return 0; if (sh_conf->dv_flow_en ^ config->dv_flow_en) { DRV_LOG(ERR, "\"dv_flow_en\" configuration mismatch" " for shared %s context", sh->ibdev_name); rte_errno = EINVAL; return rte_errno; } if (sh_conf->dv_xmeta_en ^ config->dv_xmeta_en) { DRV_LOG(ERR, "\"dv_xmeta_en\" configuration mismatch" " for shared %s context", sh->ibdev_name); rte_errno = EINVAL; return rte_errno; } return 0; } /** * Spawn an Ethernet device from Verbs information. * * @param dpdk_dev * Backing DPDK device. * @param spawn * Verbs device parameters (name, port, switch_info) to spawn. * @param config * Device configuration parameters. * * @return * A valid Ethernet device object on success, NULL otherwise and rte_errno * is set. The following errors are defined: * * EBUSY: device is not supposed to be spawned. * EEXIST: device is already spawned */ static struct rte_eth_dev * mlx5_dev_spawn(struct rte_device *dpdk_dev, struct mlx5_dev_spawn_data *spawn, struct mlx5_dev_config config) { const struct mlx5_switch_info *switch_info = &spawn->info; struct mlx5_ibv_shared *sh = NULL; struct ibv_port_attr port_attr; struct mlx5dv_context dv_attr = { .comp_mask = 0 }; struct rte_eth_dev *eth_dev = NULL; struct mlx5_priv *priv = NULL; int err = 0; unsigned int hw_padding = 0; unsigned int mps; unsigned int cqe_comp; unsigned int cqe_pad = 0; unsigned int tunnel_en = 0; unsigned int mpls_en = 0; unsigned int swp = 0; unsigned int mprq = 0; unsigned int mprq_min_stride_size_n = 0; unsigned int mprq_max_stride_size_n = 0; unsigned int mprq_min_stride_num_n = 0; unsigned int mprq_max_stride_num_n = 0; struct rte_ether_addr mac; char name[RTE_ETH_NAME_MAX_LEN]; int own_domain_id = 0; uint16_t port_id; unsigned int i; #ifdef HAVE_MLX5DV_DR_DEVX_PORT struct mlx5dv_devx_port devx_port = { .comp_mask = 0 }; #endif /* Determine if this port representor is supposed to be spawned. */ if (switch_info->representor && dpdk_dev->devargs) { struct rte_eth_devargs eth_da; err = rte_eth_devargs_parse(dpdk_dev->devargs->args, ð_da); if (err) { rte_errno = -err; DRV_LOG(ERR, "failed to process device arguments: %s", strerror(rte_errno)); return NULL; } for (i = 0; i < eth_da.nb_representor_ports; ++i) if (eth_da.representor_ports[i] == (uint16_t)switch_info->port_name) break; if (i == eth_da.nb_representor_ports) { rte_errno = EBUSY; return NULL; } } /* Build device name. */ if (spawn->pf_bond < 0) { /* Single device. */ if (!switch_info->representor) strlcpy(name, dpdk_dev->name, sizeof(name)); else snprintf(name, sizeof(name), "%s_representor_%u", dpdk_dev->name, switch_info->port_name); } else { /* Bonding device. */ if (!switch_info->representor) snprintf(name, sizeof(name), "%s_%s", dpdk_dev->name, spawn->ibv_dev->name); else snprintf(name, sizeof(name), "%s_%s_representor_%u", dpdk_dev->name, spawn->ibv_dev->name, switch_info->port_name); } /* check if the device is already spawned */ if (rte_eth_dev_get_port_by_name(name, &port_id) == 0) { rte_errno = EEXIST; return NULL; } DRV_LOG(DEBUG, "naming Ethernet device \"%s\"", name); if (rte_eal_process_type() == RTE_PROC_SECONDARY) { eth_dev = rte_eth_dev_attach_secondary(name); if (eth_dev == NULL) { DRV_LOG(ERR, "can not attach rte ethdev"); rte_errno = ENOMEM; return NULL; } eth_dev->device = dpdk_dev; eth_dev->dev_ops = &mlx5_dev_sec_ops; err = mlx5_proc_priv_init(eth_dev); if (err) return NULL; /* Receive command fd from primary process */ err = mlx5_mp_req_verbs_cmd_fd(eth_dev); if (err < 0) return NULL; /* Remap UAR for Tx queues. */ err = mlx5_tx_uar_init_secondary(eth_dev, err); if (err) return NULL; /* * Ethdev pointer is still required as input since * the primary device is not accessible from the * secondary process. */ eth_dev->rx_pkt_burst = mlx5_select_rx_function(eth_dev); eth_dev->tx_pkt_burst = mlx5_select_tx_function(eth_dev); return eth_dev; } /* * Some parameters ("tx_db_nc" in particularly) are needed in * advance to create dv/verbs device context. We proceed the * devargs here to get ones, and later proceed devargs again * to override some hardware settings. */ err = mlx5_args(&config, dpdk_dev->devargs); if (err) { err = rte_errno; DRV_LOG(ERR, "failed to process device arguments: %s", strerror(rte_errno)); goto error; } sh = mlx5_alloc_shared_ibctx(spawn, &config); if (!sh) return NULL; config.devx = sh->devx; #ifdef HAVE_MLX5DV_DR_ACTION_DEST_DEVX_TIR config.dest_tir = 1; #endif #ifdef HAVE_IBV_MLX5_MOD_SWP dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_SWP; #endif /* * Multi-packet send is supported by ConnectX-4 Lx PF as well * as all ConnectX-5 devices. */ #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS; #endif #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT dv_attr.comp_mask |= MLX5DV_CONTEXT_MASK_STRIDING_RQ; #endif mlx5_glue->dv_query_device(sh->ctx, &dv_attr); if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED) { if (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW) { DRV_LOG(DEBUG, "enhanced MPW is supported"); mps = MLX5_MPW_ENHANCED; } else { DRV_LOG(DEBUG, "MPW is supported"); mps = MLX5_MPW; } } else { DRV_LOG(DEBUG, "MPW isn't supported"); mps = MLX5_MPW_DISABLED; } #ifdef HAVE_IBV_MLX5_MOD_SWP if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_SWP) swp = dv_attr.sw_parsing_caps.sw_parsing_offloads; DRV_LOG(DEBUG, "SWP support: %u", swp); #endif config.swp = !!swp; #ifdef HAVE_IBV_DEVICE_STRIDING_RQ_SUPPORT if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_STRIDING_RQ) { struct mlx5dv_striding_rq_caps mprq_caps = dv_attr.striding_rq_caps; DRV_LOG(DEBUG, "\tmin_single_stride_log_num_of_bytes: %d", mprq_caps.min_single_stride_log_num_of_bytes); DRV_LOG(DEBUG, "\tmax_single_stride_log_num_of_bytes: %d", mprq_caps.max_single_stride_log_num_of_bytes); DRV_LOG(DEBUG, "\tmin_single_wqe_log_num_of_strides: %d", mprq_caps.min_single_wqe_log_num_of_strides); DRV_LOG(DEBUG, "\tmax_single_wqe_log_num_of_strides: %d", mprq_caps.max_single_wqe_log_num_of_strides); DRV_LOG(DEBUG, "\tsupported_qpts: %d", mprq_caps.supported_qpts); DRV_LOG(DEBUG, "device supports Multi-Packet RQ"); mprq = 1; mprq_min_stride_size_n = mprq_caps.min_single_stride_log_num_of_bytes; mprq_max_stride_size_n = mprq_caps.max_single_stride_log_num_of_bytes; mprq_min_stride_num_n = mprq_caps.min_single_wqe_log_num_of_strides; mprq_max_stride_num_n = mprq_caps.max_single_wqe_log_num_of_strides; config.mprq.stride_num_n = RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N, mprq_min_stride_num_n); } #endif if (RTE_CACHE_LINE_SIZE == 128 && !(dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_COMP)) cqe_comp = 0; else cqe_comp = 1; config.cqe_comp = cqe_comp; #ifdef HAVE_IBV_MLX5_MOD_CQE_128B_PAD /* Whether device supports 128B Rx CQE padding. */ cqe_pad = RTE_CACHE_LINE_SIZE == 128 && (dv_attr.flags & MLX5DV_CONTEXT_FLAGS_CQE_128B_PAD); #endif #ifdef HAVE_IBV_DEVICE_TUNNEL_SUPPORT if (dv_attr.comp_mask & MLX5DV_CONTEXT_MASK_TUNNEL_OFFLOADS) { tunnel_en = ((dv_attr.tunnel_offloads_caps & MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_VXLAN) && (dv_attr.tunnel_offloads_caps & MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GRE) && (dv_attr.tunnel_offloads_caps & MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_GENEVE)); } DRV_LOG(DEBUG, "tunnel offloading is %ssupported", tunnel_en ? "" : "not "); #else DRV_LOG(WARNING, "tunnel offloading disabled due to old OFED/rdma-core version"); #endif config.tunnel_en = tunnel_en; #ifdef HAVE_IBV_DEVICE_MPLS_SUPPORT mpls_en = ((dv_attr.tunnel_offloads_caps & MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_GRE) && (dv_attr.tunnel_offloads_caps & MLX5DV_RAW_PACKET_CAP_TUNNELED_OFFLOAD_CW_MPLS_OVER_UDP)); DRV_LOG(DEBUG, "MPLS over GRE/UDP tunnel offloading is %ssupported", mpls_en ? "" : "not "); #else DRV_LOG(WARNING, "MPLS over GRE/UDP tunnel offloading disabled due to" " old OFED/rdma-core version or firmware configuration"); #endif config.mpls_en = mpls_en; /* Check port status. */ err = mlx5_glue->query_port(sh->ctx, spawn->ibv_port, &port_attr); if (err) { DRV_LOG(ERR, "port query failed: %s", strerror(err)); goto error; } if (port_attr.link_layer != IBV_LINK_LAYER_ETHERNET) { DRV_LOG(ERR, "port is not configured in Ethernet mode"); err = EINVAL; goto error; } if (port_attr.state != IBV_PORT_ACTIVE) DRV_LOG(DEBUG, "port is not active: \"%s\" (%d)", mlx5_glue->port_state_str(port_attr.state), port_attr.state); /* Allocate private eth device data. */ priv = rte_zmalloc("ethdev private structure", sizeof(*priv), RTE_CACHE_LINE_SIZE); if (priv == NULL) { DRV_LOG(ERR, "priv allocation failure"); err = ENOMEM; goto error; } priv->sh = sh; priv->ibv_port = spawn->ibv_port; priv->pci_dev = spawn->pci_dev; priv->mtu = RTE_ETHER_MTU; #ifndef RTE_ARCH_64 /* Initialize UAR access locks for 32bit implementations. */ rte_spinlock_init(&priv->uar_lock_cq); for (i = 0; i < MLX5_UAR_PAGE_NUM_MAX; i++) rte_spinlock_init(&priv->uar_lock[i]); #endif /* Some internal functions rely on Netlink sockets, open them now. */ priv->nl_socket_rdma = mlx5_nl_init(NETLINK_RDMA); priv->nl_socket_route = mlx5_nl_init(NETLINK_ROUTE); priv->nl_sn = 0; priv->representor = !!switch_info->representor; priv->master = !!switch_info->master; priv->domain_id = RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID; priv->vport_meta_tag = 0; priv->vport_meta_mask = 0; priv->pf_bond = spawn->pf_bond; #ifdef HAVE_MLX5DV_DR_DEVX_PORT /* * The DevX port query API is implemented. E-Switch may use * either vport or reg_c[0] metadata register to match on * vport index. The engaged part of metadata register is * defined by mask. */ if (switch_info->representor || switch_info->master) { devx_port.comp_mask = MLX5DV_DEVX_PORT_VPORT | MLX5DV_DEVX_PORT_MATCH_REG_C_0; err = mlx5_glue->devx_port_query(sh->ctx, spawn->ibv_port, &devx_port); if (err) { DRV_LOG(WARNING, "can't query devx port %d on device %s", spawn->ibv_port, spawn->ibv_dev->name); devx_port.comp_mask = 0; } } if (devx_port.comp_mask & MLX5DV_DEVX_PORT_MATCH_REG_C_0) { priv->vport_meta_tag = devx_port.reg_c_0.value; priv->vport_meta_mask = devx_port.reg_c_0.mask; if (!priv->vport_meta_mask) { DRV_LOG(ERR, "vport zero mask for port %d" " on bonding device %s", spawn->ibv_port, spawn->ibv_dev->name); err = ENOTSUP; goto error; } if (priv->vport_meta_tag & ~priv->vport_meta_mask) { DRV_LOG(ERR, "invalid vport tag for port %d" " on bonding device %s", spawn->ibv_port, spawn->ibv_dev->name); err = ENOTSUP; goto error; } } if (devx_port.comp_mask & MLX5DV_DEVX_PORT_VPORT) { priv->vport_id = devx_port.vport_num; } else if (spawn->pf_bond >= 0) { DRV_LOG(ERR, "can't deduce vport index for port %d" " on bonding device %s", spawn->ibv_port, spawn->ibv_dev->name); err = ENOTSUP; goto error; } else { /* Suppose vport index in compatible way. */ priv->vport_id = switch_info->representor ? switch_info->port_name + 1 : -1; } #else /* * Kernel/rdma_core support single E-Switch per PF configurations * only and vport_id field contains the vport index for * associated VF, which is deduced from representor port name. * For example, let's have the IB device port 10, it has * attached network device eth0, which has port name attribute * pf0vf2, we can deduce the VF number as 2, and set vport index * as 3 (2+1). This assigning schema should be changed if the * multiple E-Switch instances per PF configurations or/and PCI * subfunctions are added. */ priv->vport_id = switch_info->representor ? switch_info->port_name + 1 : -1; #endif /* representor_id field keeps the unmodified VF index. */ priv->representor_id = switch_info->representor ? switch_info->port_name : -1; /* * Look for sibling devices in order to reuse their switch domain * if any, otherwise allocate one. */ MLX5_ETH_FOREACH_DEV(port_id, priv->pci_dev) { const struct mlx5_priv *opriv = rte_eth_devices[port_id].data->dev_private; if (!opriv || opriv->sh != priv->sh || opriv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) continue; priv->domain_id = opriv->domain_id; break; } if (priv->domain_id == RTE_ETH_DEV_SWITCH_DOMAIN_ID_INVALID) { err = rte_eth_switch_domain_alloc(&priv->domain_id); if (err) { err = rte_errno; DRV_LOG(ERR, "unable to allocate switch domain: %s", strerror(rte_errno)); goto error; } own_domain_id = 1; } /* Override some values set by hardware configuration. */ mlx5_args(&config, dpdk_dev->devargs); err = mlx5_dev_check_sibling_config(priv, &config); if (err) goto error; config.hw_csum = !!(sh->device_attr.device_cap_flags_ex & IBV_DEVICE_RAW_IP_CSUM); DRV_LOG(DEBUG, "checksum offloading is %ssupported", (config.hw_csum ? "" : "not ")); #if !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V42) && \ !defined(HAVE_IBV_DEVICE_COUNTERS_SET_V45) DRV_LOG(DEBUG, "counters are not supported"); #endif #if !defined(HAVE_IBV_FLOW_DV_SUPPORT) || !defined(HAVE_MLX5DV_DR) if (config.dv_flow_en) { DRV_LOG(WARNING, "DV flow is not supported"); config.dv_flow_en = 0; } #endif config.ind_table_max_size = sh->device_attr.rss_caps.max_rwq_indirection_table_size; /* * Remove this check once DPDK supports larger/variable * indirection tables. */ if (config.ind_table_max_size > (unsigned int)ETH_RSS_RETA_SIZE_512) config.ind_table_max_size = ETH_RSS_RETA_SIZE_512; DRV_LOG(DEBUG, "maximum Rx indirection table size is %u", config.ind_table_max_size); config.hw_vlan_strip = !!(sh->device_attr.raw_packet_caps & IBV_RAW_PACKET_CAP_CVLAN_STRIPPING); DRV_LOG(DEBUG, "VLAN stripping is %ssupported", (config.hw_vlan_strip ? "" : "not ")); config.hw_fcs_strip = !!(sh->device_attr.raw_packet_caps & IBV_RAW_PACKET_CAP_SCATTER_FCS); DRV_LOG(DEBUG, "FCS stripping configuration is %ssupported", (config.hw_fcs_strip ? "" : "not ")); #if defined(HAVE_IBV_WQ_FLAG_RX_END_PADDING) hw_padding = !!sh->device_attr.rx_pad_end_addr_align; #elif defined(HAVE_IBV_WQ_FLAGS_PCI_WRITE_END_PADDING) hw_padding = !!(sh->device_attr.device_cap_flags_ex & IBV_DEVICE_PCI_WRITE_END_PADDING); #endif if (config.hw_padding && !hw_padding) { DRV_LOG(DEBUG, "Rx end alignment padding isn't supported"); config.hw_padding = 0; } else if (config.hw_padding) { DRV_LOG(DEBUG, "Rx end alignment padding is enabled"); } config.tso = (sh->device_attr.tso_caps.max_tso > 0 && (sh->device_attr.tso_caps.supported_qpts & (1 << IBV_QPT_RAW_PACKET))); if (config.tso) config.tso_max_payload_sz = sh->device_attr.tso_caps.max_tso; /* * MPW is disabled by default, while the Enhanced MPW is enabled * by default. */ if (config.mps == MLX5_ARG_UNSET) config.mps = (mps == MLX5_MPW_ENHANCED) ? MLX5_MPW_ENHANCED : MLX5_MPW_DISABLED; else config.mps = config.mps ? mps : MLX5_MPW_DISABLED; DRV_LOG(INFO, "%sMPS is %s", config.mps == MLX5_MPW_ENHANCED ? "enhanced " : config.mps == MLX5_MPW ? "legacy " : "", config.mps != MLX5_MPW_DISABLED ? "enabled" : "disabled"); if (config.cqe_comp && !cqe_comp) { DRV_LOG(WARNING, "Rx CQE compression isn't supported"); config.cqe_comp = 0; } if (config.cqe_pad && !cqe_pad) { DRV_LOG(WARNING, "Rx CQE padding isn't supported"); config.cqe_pad = 0; } else if (config.cqe_pad) { DRV_LOG(INFO, "Rx CQE padding is enabled"); } if (config.devx) { priv->counter_fallback = 0; err = mlx5_devx_cmd_query_hca_attr(sh->ctx, &config.hca_attr); if (err) { err = -err; goto error; } if (!config.hca_attr.flow_counters_dump) priv->counter_fallback = 1; #ifndef HAVE_IBV_DEVX_ASYNC priv->counter_fallback = 1; #endif if (priv->counter_fallback) DRV_LOG(INFO, "Use fall-back DV counter management"); /* Check for LRO support. */ if (config.dest_tir && config.hca_attr.lro_cap && config.dv_flow_en) { /* TBD check tunnel lro caps. */ config.lro.supported = config.hca_attr.lro_cap; DRV_LOG(DEBUG, "Device supports LRO"); /* * If LRO timeout is not configured by application, * use the minimal supported value. */ if (!config.lro.timeout) config.lro.timeout = config.hca_attr.lro_timer_supported_periods[0]; DRV_LOG(DEBUG, "LRO session timeout set to %d usec", config.lro.timeout); } #if defined(HAVE_MLX5DV_DR) && defined(HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER) if (config.hca_attr.qos.sup && config.hca_attr.qos.srtcm_sup && config.dv_flow_en) { uint8_t reg_c_mask = config.hca_attr.qos.flow_meter_reg_c_ids; /* * Meter needs two REG_C's for color match and pre-sfx * flow match. Here get the REG_C for color match. * REG_C_0 and REG_C_1 is reserved for metadata feature. */ reg_c_mask &= 0xfc; if (__builtin_popcount(reg_c_mask) < 1) { priv->mtr_en = 0; DRV_LOG(WARNING, "No available register for" " meter."); } else { priv->mtr_color_reg = ffs(reg_c_mask) - 1 + REG_C_0; priv->mtr_en = 1; priv->mtr_reg_share = config.hca_attr.qos.flow_meter_reg_share; DRV_LOG(DEBUG, "The REG_C meter uses is %d", priv->mtr_color_reg); } } #endif } if (config.mprq.enabled && mprq) { if (config.mprq.stride_num_n > mprq_max_stride_num_n || config.mprq.stride_num_n < mprq_min_stride_num_n) { config.mprq.stride_num_n = RTE_MAX(MLX5_MPRQ_STRIDE_NUM_N, mprq_min_stride_num_n); DRV_LOG(WARNING, "the number of strides" " for Multi-Packet RQ is out of range," " setting default value (%u)", 1 << config.mprq.stride_num_n); } config.mprq.min_stride_size_n = mprq_min_stride_size_n; config.mprq.max_stride_size_n = mprq_max_stride_size_n; } else if (config.mprq.enabled && !mprq) { DRV_LOG(WARNING, "Multi-Packet RQ isn't supported"); config.mprq.enabled = 0; } if (config.max_dump_files_num == 0) config.max_dump_files_num = 128; eth_dev = rte_eth_dev_allocate(name); if (eth_dev == NULL) { DRV_LOG(ERR, "can not allocate rte ethdev"); err = ENOMEM; goto error; } /* Flag to call rte_eth_dev_release_port() in rte_eth_dev_close(). */ eth_dev->data->dev_flags |= RTE_ETH_DEV_CLOSE_REMOVE; if (priv->representor) { eth_dev->data->dev_flags |= RTE_ETH_DEV_REPRESENTOR; eth_dev->data->representor_id = priv->representor_id; } /* * Store associated network device interface index. This index * is permanent throughout the lifetime of device. So, we may store * the ifindex here and use the cached value further. */ assert(spawn->ifindex); priv->if_index = spawn->ifindex; eth_dev->data->dev_private = priv; priv->dev_data = eth_dev->data; eth_dev->data->mac_addrs = priv->mac; eth_dev->device = dpdk_dev; /* Configure the first MAC address by default. */ if (mlx5_get_mac(eth_dev, &mac.addr_bytes)) { DRV_LOG(ERR, "port %u cannot get MAC address, is mlx5_en" " loaded? (errno: %s)", eth_dev->data->port_id, strerror(rte_errno)); err = ENODEV; goto error; } DRV_LOG(INFO, "port %u MAC address is %02x:%02x:%02x:%02x:%02x:%02x", eth_dev->data->port_id, mac.addr_bytes[0], mac.addr_bytes[1], mac.addr_bytes[2], mac.addr_bytes[3], mac.addr_bytes[4], mac.addr_bytes[5]); #ifndef NDEBUG { char ifname[IF_NAMESIZE]; if (mlx5_get_ifname(eth_dev, &ifname) == 0) DRV_LOG(DEBUG, "port %u ifname is \"%s\"", eth_dev->data->port_id, ifname); else DRV_LOG(DEBUG, "port %u ifname is unknown", eth_dev->data->port_id); } #endif /* Get actual MTU if possible. */ err = mlx5_get_mtu(eth_dev, &priv->mtu); if (err) { err = rte_errno; goto error; } DRV_LOG(DEBUG, "port %u MTU is %u", eth_dev->data->port_id, priv->mtu); /* Initialize burst functions to prevent crashes before link-up. */ eth_dev->rx_pkt_burst = removed_rx_burst; eth_dev->tx_pkt_burst = removed_tx_burst; eth_dev->dev_ops = &mlx5_dev_ops; /* Register MAC address. */ claim_zero(mlx5_mac_addr_add(eth_dev, &mac, 0, 0)); if (config.vf && config.vf_nl_en) mlx5_nl_mac_addr_sync(eth_dev); TAILQ_INIT(&priv->flows); TAILQ_INIT(&priv->ctrl_flows); TAILQ_INIT(&priv->flow_meters); TAILQ_INIT(&priv->flow_meter_profiles); /* Hint libmlx5 to use PMD allocator for data plane resources */ struct mlx5dv_ctx_allocators alctr = { .alloc = &mlx5_alloc_verbs_buf, .free = &mlx5_free_verbs_buf, .data = priv, }; mlx5_glue->dv_set_context_attr(sh->ctx, MLX5DV_CTX_ATTR_BUF_ALLOCATORS, (void *)((uintptr_t)&alctr)); /* Bring Ethernet device up. */ DRV_LOG(DEBUG, "port %u forcing Ethernet interface up", eth_dev->data->port_id); mlx5_set_link_up(eth_dev); /* * Even though the interrupt handler is not installed yet, * interrupts will still trigger on the async_fd from * Verbs context returned by ibv_open_device(). */ mlx5_link_update(eth_dev, 0); #ifdef HAVE_MLX5DV_DR_ESWITCH if (!(config.hca_attr.eswitch_manager && config.dv_flow_en && (switch_info->representor || switch_info->master))) config.dv_esw_en = 0; #else config.dv_esw_en = 0; #endif /* Detect minimal data bytes to inline. */ mlx5_set_min_inline(spawn, &config); /* Store device configuration on private structure. */ priv->config = config; /* Create context for virtual machine VLAN workaround. */ priv->vmwa_context = mlx5_vlan_vmwa_init(eth_dev, spawn->ifindex); if (config.dv_flow_en) { err = mlx5_alloc_shared_dr(priv); if (err) goto error; /* * RSS id is shared with meter flow id. Meter flow id can only * use the 24 MSB of the register. */ priv->qrss_id_pool = mlx5_flow_id_pool_alloc(UINT32_MAX >> MLX5_MTR_COLOR_BITS); if (!priv->qrss_id_pool) { DRV_LOG(ERR, "can't create flow id pool"); err = ENOMEM; goto error; } } /* Supported Verbs flow priority number detection. */ err = mlx5_flow_discover_priorities(eth_dev); if (err < 0) { err = -err; goto error; } priv->config.flow_prio = err; if (!priv->config.dv_esw_en && priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) { DRV_LOG(WARNING, "metadata mode %u is not supported " "(no E-Switch)", priv->config.dv_xmeta_en); priv->config.dv_xmeta_en = MLX5_XMETA_MODE_LEGACY; } mlx5_set_metadata_mask(eth_dev); if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY && !priv->sh->dv_regc0_mask) { DRV_LOG(ERR, "metadata mode %u is not supported " "(no metadata reg_c[0] is available)", priv->config.dv_xmeta_en); err = ENOTSUP; goto error; } /* Query availibility of metadata reg_c's. */ err = mlx5_flow_discover_mreg_c(eth_dev); if (err < 0) { err = -err; goto error; } if (!mlx5_flow_ext_mreg_supported(eth_dev)) { DRV_LOG(DEBUG, "port %u extensive metadata register is not supported", eth_dev->data->port_id); if (priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY) { DRV_LOG(ERR, "metadata mode %u is not supported " "(no metadata registers available)", priv->config.dv_xmeta_en); err = ENOTSUP; goto error; } } if (priv->config.dv_flow_en && priv->config.dv_xmeta_en != MLX5_XMETA_MODE_LEGACY && mlx5_flow_ext_mreg_supported(eth_dev) && priv->sh->dv_regc0_mask) { priv->mreg_cp_tbl = mlx5_hlist_create(MLX5_FLOW_MREG_HNAME, MLX5_FLOW_MREG_HTABLE_SZ); if (!priv->mreg_cp_tbl) { err = ENOMEM; goto error; } } return eth_dev; error: if (priv) { if (priv->mreg_cp_tbl) mlx5_hlist_destroy(priv->mreg_cp_tbl, NULL, NULL); if (priv->sh) mlx5_free_shared_dr(priv); if (priv->nl_socket_route >= 0) close(priv->nl_socket_route); if (priv->nl_socket_rdma >= 0) close(priv->nl_socket_rdma); if (priv->vmwa_context) mlx5_vlan_vmwa_exit(priv->vmwa_context); if (priv->qrss_id_pool) mlx5_flow_id_pool_release(priv->qrss_id_pool); if (own_domain_id) claim_zero(rte_eth_switch_domain_free(priv->domain_id)); rte_free(priv); if (eth_dev != NULL) eth_dev->data->dev_private = NULL; } if (eth_dev != NULL) { /* mac_addrs must not be freed alone because part of dev_private */ eth_dev->data->mac_addrs = NULL; rte_eth_dev_release_port(eth_dev); } if (sh) mlx5_free_shared_ibctx(sh); assert(err > 0); rte_errno = err; return NULL; } /** * Comparison callback to sort device data. * * This is meant to be used with qsort(). * * @param a[in] * Pointer to pointer to first data object. * @param b[in] * Pointer to pointer to second data object. * * @return * 0 if both objects are equal, less than 0 if the first argument is less * than the second, greater than 0 otherwise. */ static int mlx5_dev_spawn_data_cmp(const void *a, const void *b) { const struct mlx5_switch_info *si_a = &((const struct mlx5_dev_spawn_data *)a)->info; const struct mlx5_switch_info *si_b = &((const struct mlx5_dev_spawn_data *)b)->info; int ret; /* Master device first. */ ret = si_b->master - si_a->master; if (ret) return ret; /* Then representor devices. */ ret = si_b->representor - si_a->representor; if (ret) return ret; /* Unidentified devices come last in no specific order. */ if (!si_a->representor) return 0; /* Order representors by name. */ return si_a->port_name - si_b->port_name; } /** * Match PCI information for possible slaves of bonding device. * * @param[in] ibv_dev * Pointer to Infiniband device structure. * @param[in] pci_dev * Pointer to PCI device structure to match PCI address. * @param[in] nl_rdma * Netlink RDMA group socket handle. * * @return * negative value if no bonding device found, otherwise * positive index of slave PF in bonding. */ static int mlx5_device_bond_pci_match(const struct ibv_device *ibv_dev, const struct rte_pci_device *pci_dev, int nl_rdma) { char ifname[IF_NAMESIZE + 1]; unsigned int ifindex; unsigned int np, i; FILE *file = NULL; int pf = -1; /* * Try to get master device name. If something goes * wrong suppose the lack of kernel support and no * bonding devices. */ if (nl_rdma < 0) return -1; if (!strstr(ibv_dev->name, "bond")) return -1; np = mlx5_nl_portnum(nl_rdma, ibv_dev->name); if (!np) return -1; /* * The Master device might not be on the predefined * port (not on port index 1, it is not garanted), * we have to scan all Infiniband device port and * find master. */ for (i = 1; i <= np; ++i) { /* Check whether Infiniband port is populated. */ ifindex = mlx5_nl_ifindex(nl_rdma, ibv_dev->name, i); if (!ifindex) continue; if (!if_indextoname(ifindex, ifname)) continue; /* Try to read bonding slave names from sysfs. */ MKSTR(slaves, "/sys/class/net/%s/master/bonding/slaves", ifname); file = fopen(slaves, "r"); if (file) break; } if (!file) return -1; /* Use safe format to check maximal buffer length. */ assert(atol(RTE_STR(IF_NAMESIZE)) == IF_NAMESIZE); while (fscanf(file, "%" RTE_STR(IF_NAMESIZE) "s", ifname) == 1) { char tmp_str[IF_NAMESIZE + 32]; struct rte_pci_addr pci_addr; struct mlx5_switch_info info; /* Process slave interface names in the loop. */ snprintf(tmp_str, sizeof(tmp_str), "/sys/class/net/%s", ifname); if (mlx5_dev_to_pci_addr(tmp_str, &pci_addr)) { DRV_LOG(WARNING, "can not get PCI address" " for netdev \"%s\"", ifname); continue; } if (pci_dev->addr.domain != pci_addr.domain || pci_dev->addr.bus != pci_addr.bus || pci_dev->addr.devid != pci_addr.devid || pci_dev->addr.function != pci_addr.function) continue; /* Slave interface PCI address match found. */ fclose(file); snprintf(tmp_str, sizeof(tmp_str), "/sys/class/net/%s/phys_port_name", ifname); file = fopen(tmp_str, "rb"); if (!file) break; info.name_type = MLX5_PHYS_PORT_NAME_TYPE_NOTSET; if (fscanf(file, "%32s", tmp_str) == 1) mlx5_translate_port_name(tmp_str, &info); if (info.name_type == MLX5_PHYS_PORT_NAME_TYPE_LEGACY || info.name_type == MLX5_PHYS_PORT_NAME_TYPE_UPLINK) pf = info.port_name; break; } if (file) fclose(file); return pf; } /** * DPDK callback to register a PCI device. * * This function spawns Ethernet devices out of a given PCI device. * * @param[in] pci_drv * PCI driver structure (mlx5_driver). * @param[in] pci_dev * PCI device information. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, struct rte_pci_device *pci_dev) { struct ibv_device **ibv_list; /* * Number of found IB Devices matching with requested PCI BDF. * nd != 1 means there are multiple IB devices over the same * PCI device and we have representors and master. */ unsigned int nd = 0; /* * Number of found IB device Ports. nd = 1 and np = 1..n means * we have the single multiport IB device, and there may be * representors attached to some of found ports. */ unsigned int np = 0; /* * Number of DPDK ethernet devices to Spawn - either over * multiple IB devices or multiple ports of single IB device. * Actually this is the number of iterations to spawn. */ unsigned int ns = 0; /* * Bonding device * < 0 - no bonding device (single one) * >= 0 - bonding device (value is slave PF index) */ int bd = -1; struct mlx5_dev_spawn_data *list = NULL; struct mlx5_dev_config dev_config; int ret; if (mlx5_class_get(pci_dev->device.devargs) != MLX5_CLASS_NET) { DRV_LOG(DEBUG, "Skip probing - should be probed by other mlx5" " driver."); return 1; } if (rte_eal_process_type() == RTE_PROC_PRIMARY) mlx5_pmd_socket_init(); ret = mlx5_init_once(); if (ret) { DRV_LOG(ERR, "unable to init PMD global data: %s", strerror(rte_errno)); return -rte_errno; } assert(pci_drv == &mlx5_driver); errno = 0; ibv_list = mlx5_glue->get_device_list(&ret); if (!ibv_list) { rte_errno = errno ? errno : ENOSYS; DRV_LOG(ERR, "cannot list devices, is ib_uverbs loaded?"); return -rte_errno; } /* * First scan the list of all Infiniband devices to find * matching ones, gathering into the list. */ struct ibv_device *ibv_match[ret + 1]; int nl_route = mlx5_nl_init(NETLINK_ROUTE); int nl_rdma = mlx5_nl_init(NETLINK_RDMA); unsigned int i; while (ret-- > 0) { struct rte_pci_addr pci_addr; DRV_LOG(DEBUG, "checking device \"%s\"", ibv_list[ret]->name); bd = mlx5_device_bond_pci_match (ibv_list[ret], pci_dev, nl_rdma); if (bd >= 0) { /* * Bonding device detected. Only one match is allowed, * the bonding is supported over multi-port IB device, * there should be no matches on representor PCI * functions or non VF LAG bonding devices with * specified address. */ if (nd) { DRV_LOG(ERR, "multiple PCI match on bonding device" "\"%s\" found", ibv_list[ret]->name); rte_errno = ENOENT; ret = -rte_errno; goto exit; } DRV_LOG(INFO, "PCI information matches for" " slave %d bonding device \"%s\"", bd, ibv_list[ret]->name); ibv_match[nd++] = ibv_list[ret]; break; } if (mlx5_dev_to_pci_addr (ibv_list[ret]->ibdev_path, &pci_addr)) continue; if (pci_dev->addr.domain != pci_addr.domain || pci_dev->addr.bus != pci_addr.bus || pci_dev->addr.devid != pci_addr.devid || pci_dev->addr.function != pci_addr.function) continue; DRV_LOG(INFO, "PCI information matches for device \"%s\"", ibv_list[ret]->name); ibv_match[nd++] = ibv_list[ret]; } ibv_match[nd] = NULL; if (!nd) { /* No device matches, just complain and bail out. */ DRV_LOG(WARNING, "no Verbs device matches PCI device " PCI_PRI_FMT "," " are kernel drivers loaded?", pci_dev->addr.domain, pci_dev->addr.bus, pci_dev->addr.devid, pci_dev->addr.function); rte_errno = ENOENT; ret = -rte_errno; goto exit; } if (nd == 1) { /* * Found single matching device may have multiple ports. * Each port may be representor, we have to check the port * number and check the representors existence. */ if (nl_rdma >= 0) np = mlx5_nl_portnum(nl_rdma, ibv_match[0]->name); if (!np) DRV_LOG(WARNING, "can not get IB device \"%s\"" " ports number", ibv_match[0]->name); if (bd >= 0 && !np) { DRV_LOG(ERR, "can not get ports" " for bonding device"); rte_errno = ENOENT; ret = -rte_errno; goto exit; } } #ifndef HAVE_MLX5DV_DR_DEVX_PORT if (bd >= 0) { /* * This may happen if there is VF LAG kernel support and * application is compiled with older rdma_core library. */ DRV_LOG(ERR, "No kernel/verbs support for VF LAG bonding found."); rte_errno = ENOTSUP; ret = -rte_errno; goto exit; } #endif /* * Now we can determine the maximal * amount of devices to be spawned. */ list = rte_zmalloc("device spawn data", sizeof(struct mlx5_dev_spawn_data) * (np ? np : nd), RTE_CACHE_LINE_SIZE); if (!list) { DRV_LOG(ERR, "spawn data array allocation failure"); rte_errno = ENOMEM; ret = -rte_errno; goto exit; } if (bd >= 0 || np > 1) { /* * Single IB device with multiple ports found, * it may be E-Switch master device and representors. * We have to perform identification trough the ports. */ assert(nl_rdma >= 0); assert(ns == 0); assert(nd == 1); assert(np); for (i = 1; i <= np; ++i) { list[ns].max_port = np; list[ns].ibv_port = i; list[ns].ibv_dev = ibv_match[0]; list[ns].eth_dev = NULL; list[ns].pci_dev = pci_dev; list[ns].pf_bond = bd; list[ns].ifindex = mlx5_nl_ifindex (nl_rdma, list[ns].ibv_dev->name, i); if (!list[ns].ifindex) { /* * No network interface index found for the * specified port, it means there is no * representor on this port. It's OK, * there can be disabled ports, for example * if sriov_numvfs < sriov_totalvfs. */ continue; } ret = -1; if (nl_route >= 0) ret = mlx5_nl_switch_info (nl_route, list[ns].ifindex, &list[ns].info); if (ret || (!list[ns].info.representor && !list[ns].info.master)) { /* * We failed to recognize representors with * Netlink, let's try to perform the task * with sysfs. */ ret = mlx5_sysfs_switch_info (list[ns].ifindex, &list[ns].info); } if (!ret && bd >= 0) { switch (list[ns].info.name_type) { case MLX5_PHYS_PORT_NAME_TYPE_UPLINK: if (list[ns].info.port_name == bd) ns++; break; case MLX5_PHYS_PORT_NAME_TYPE_PFVF: if (list[ns].info.pf_num == bd) ns++; break; default: break; } continue; } if (!ret && (list[ns].info.representor ^ list[ns].info.master)) ns++; } if (!ns) { DRV_LOG(ERR, "unable to recognize master/representors" " on the IB device with multiple ports"); rte_errno = ENOENT; ret = -rte_errno; goto exit; } } else { /* * The existence of several matching entries (nd > 1) means * port representors have been instantiated. No existing Verbs * call nor sysfs entries can tell them apart, this can only * be done through Netlink calls assuming kernel drivers are * recent enough to support them. * * In the event of identification failure through Netlink, * try again through sysfs, then: * * 1. A single IB device matches (nd == 1) with single * port (np=0/1) and is not a representor, assume * no switch support. * * 2. Otherwise no safe assumptions can be made; * complain louder and bail out. */ np = 1; for (i = 0; i != nd; ++i) { memset(&list[ns].info, 0, sizeof(list[ns].info)); list[ns].max_port = 1; list[ns].ibv_port = 1; list[ns].ibv_dev = ibv_match[i]; list[ns].eth_dev = NULL; list[ns].pci_dev = pci_dev; list[ns].pf_bond = -1; list[ns].ifindex = 0; if (nl_rdma >= 0) list[ns].ifindex = mlx5_nl_ifindex (nl_rdma, list[ns].ibv_dev->name, 1); if (!list[ns].ifindex) { char ifname[IF_NAMESIZE]; /* * Netlink failed, it may happen with old * ib_core kernel driver (before 4.16). * We can assume there is old driver because * here we are processing single ports IB * devices. Let's try sysfs to retrieve * the ifindex. The method works for * master device only. */ if (nd > 1) { /* * Multiple devices found, assume * representors, can not distinguish * master/representor and retrieve * ifindex via sysfs. */ continue; } ret = mlx5_get_master_ifname (ibv_match[i]->ibdev_path, &ifname); if (!ret) list[ns].ifindex = if_nametoindex(ifname); if (!list[ns].ifindex) { /* * No network interface index found * for the specified device, it means * there it is neither representor * nor master. */ continue; } } ret = -1; if (nl_route >= 0) ret = mlx5_nl_switch_info (nl_route, list[ns].ifindex, &list[ns].info); if (ret || (!list[ns].info.representor && !list[ns].info.master)) { /* * We failed to recognize representors with * Netlink, let's try to perform the task * with sysfs. */ ret = mlx5_sysfs_switch_info (list[ns].ifindex, &list[ns].info); } if (!ret && (list[ns].info.representor ^ list[ns].info.master)) { ns++; } else if ((nd == 1) && !list[ns].info.representor && !list[ns].info.master) { /* * Single IB device with * one physical port and * attached network device. * May be SRIOV is not enabled * or there is no representors. */ DRV_LOG(INFO, "no E-Switch support detected"); ns++; break; } } if (!ns) { DRV_LOG(ERR, "unable to recognize master/representors" " on the multiple IB devices"); rte_errno = ENOENT; ret = -rte_errno; goto exit; } } assert(ns); /* * Sort list to probe devices in natural order for users convenience * (i.e. master first, then representors from lowest to highest ID). */ qsort(list, ns, sizeof(*list), mlx5_dev_spawn_data_cmp); /* Default configuration. */ dev_config = (struct mlx5_dev_config){ .hw_padding = 0, .mps = MLX5_ARG_UNSET, .dbnc = MLX5_ARG_UNSET, .rx_vec_en = 1, .txq_inline_max = MLX5_ARG_UNSET, .txq_inline_min = MLX5_ARG_UNSET, .txq_inline_mpw = MLX5_ARG_UNSET, .txqs_inline = MLX5_ARG_UNSET, .vf_nl_en = 1, .mr_ext_memseg_en = 1, .mprq = { .enabled = 0, /* Disabled by default. */ .stride_num_n = MLX5_MPRQ_STRIDE_NUM_N, .max_memcpy_len = MLX5_MPRQ_MEMCPY_DEFAULT_LEN, .min_rxqs_num = MLX5_MPRQ_MIN_RXQS, }, .dv_esw_en = 1, .dv_flow_en = 1, }; /* Device specific configuration. */ switch (pci_dev->id.device_id) { case PCI_DEVICE_ID_MELLANOX_CONNECTX4VF: case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF: case PCI_DEVICE_ID_MELLANOX_CONNECTX5VF: case PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF: case PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF: case PCI_DEVICE_ID_MELLANOX_CONNECTX6VF: case PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF: dev_config.vf = 1; break; default: break; } for (i = 0; i != ns; ++i) { uint32_t restore; list[i].eth_dev = mlx5_dev_spawn(&pci_dev->device, &list[i], dev_config); if (!list[i].eth_dev) { if (rte_errno != EBUSY && rte_errno != EEXIST) break; /* Device is disabled or already spawned. Ignore it. */ continue; } restore = list[i].eth_dev->data->dev_flags; rte_eth_copy_pci_info(list[i].eth_dev, pci_dev); /* Restore non-PCI flags cleared by the above call. */ list[i].eth_dev->data->dev_flags |= restore; mlx5_dev_interrupt_handler_devx_install(list[i].eth_dev); rte_eth_dev_probing_finish(list[i].eth_dev); } if (i != ns) { DRV_LOG(ERR, "probe of PCI device " PCI_PRI_FMT " aborted after" " encountering an error: %s", pci_dev->addr.domain, pci_dev->addr.bus, pci_dev->addr.devid, pci_dev->addr.function, strerror(rte_errno)); ret = -rte_errno; /* Roll back. */ while (i--) { if (!list[i].eth_dev) continue; mlx5_dev_close(list[i].eth_dev); /* mac_addrs must not be freed because in dev_private */ list[i].eth_dev->data->mac_addrs = NULL; claim_zero(rte_eth_dev_release_port(list[i].eth_dev)); } /* Restore original error. */ rte_errno = -ret; } else { ret = 0; } exit: /* * Do the routine cleanup: * - close opened Netlink sockets * - free allocated spawn data array * - free the Infiniband device list */ if (nl_rdma >= 0) close(nl_rdma); if (nl_route >= 0) close(nl_route); if (list) rte_free(list); assert(ibv_list); mlx5_glue->free_device_list(ibv_list); return ret; } /** * Look for the ethernet device belonging to mlx5 driver. * * @param[in] port_id * port_id to start looking for device. * @param[in] pci_dev * Pointer to the hint PCI device. When device is being probed * the its siblings (master and preceding representors might * not have assigned driver yet (because the mlx5_pci_probe() * is not completed yet, for this case match on hint PCI * device may be used to detect sibling device. * * @return * port_id of found device, RTE_MAX_ETHPORT if not found. */ uint16_t mlx5_eth_find_next(uint16_t port_id, struct rte_pci_device *pci_dev) { while (port_id < RTE_MAX_ETHPORTS) { struct rte_eth_dev *dev = &rte_eth_devices[port_id]; if (dev->state != RTE_ETH_DEV_UNUSED && dev->device && (dev->device == &pci_dev->device || (dev->device->driver && dev->device->driver->name && !strcmp(dev->device->driver->name, MLX5_DRIVER_NAME)))) break; port_id++; } if (port_id >= RTE_MAX_ETHPORTS) return RTE_MAX_ETHPORTS; return port_id; } /** * DPDK callback to remove a PCI device. * * This function removes all Ethernet devices belong to a given PCI device. * * @param[in] pci_dev * Pointer to the PCI device. * * @return * 0 on success, the function cannot fail. */ static int mlx5_pci_remove(struct rte_pci_device *pci_dev) { uint16_t port_id; RTE_ETH_FOREACH_DEV_OF(port_id, &pci_dev->device) rte_eth_dev_close(port_id); return 0; } static const struct rte_pci_id mlx5_pci_id_map[] = { { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX4) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX4VF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX4LX) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX5) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX5VF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX5EX) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX5EXVF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX5BF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX5BFVF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX6) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX6VF) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX6DX) }, { RTE_PCI_DEVICE(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_CONNECTX6DXVF) }, { .vendor_id = 0 } }; static struct rte_pci_driver mlx5_driver = { .driver = { .name = MLX5_DRIVER_NAME }, .id_table = mlx5_pci_id_map, .probe = mlx5_pci_probe, .remove = mlx5_pci_remove, .dma_map = mlx5_dma_map, .dma_unmap = mlx5_dma_unmap, .drv_flags = RTE_PCI_DRV_INTR_LSC | RTE_PCI_DRV_INTR_RMV | RTE_PCI_DRV_PROBE_AGAIN, }; /** * Driver initialization routine. */ RTE_INIT(rte_mlx5_pmd_init) { /* Initialize driver log type. */ mlx5_logtype = rte_log_register("pmd.net.mlx5"); if (mlx5_logtype >= 0) rte_log_set_level(mlx5_logtype, RTE_LOG_NOTICE); /* Build the static tables for Verbs conversion. */ mlx5_set_ptype_table(); mlx5_set_cksum_table(); mlx5_set_swp_types_table(); if (mlx5_glue) rte_pci_register(&mlx5_driver); } RTE_PMD_EXPORT_NAME(net_mlx5, __COUNTER__); RTE_PMD_REGISTER_PCI_TABLE(net_mlx5, mlx5_pci_id_map); RTE_PMD_REGISTER_KMOD_DEP(net_mlx5, "* ib_uverbs & mlx5_core & mlx5_ib");