/* SPDX-License-Identifier: BSD-3-Clause * Copyright 2015 6WIND S.A. * Copyright 2015 Mellanox Technologies, Ltd */ #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 "mlx5_utils.h" #include "mlx5_defs.h" #include "mlx5.h" #include "mlx5_rxtx.h" #include "mlx5_autoconf.h" #include "mlx5_glue.h" /** * Allocate TX queue elements. * * @param txq_ctrl * Pointer to TX queue structure. */ void txq_alloc_elts(struct mlx5_txq_ctrl *txq_ctrl) { const unsigned int elts_n = 1 << txq_ctrl->txq.elts_n; unsigned int i; for (i = 0; (i != elts_n); ++i) txq_ctrl->txq.elts[i] = NULL; DRV_LOG(DEBUG, "port %u Tx queue %u allocated and configured %u WRs", PORT_ID(txq_ctrl->priv), txq_ctrl->txq.idx, elts_n); txq_ctrl->txq.elts_head = 0; txq_ctrl->txq.elts_tail = 0; txq_ctrl->txq.elts_comp = 0; } /** * Free TX queue elements. * * @param txq_ctrl * Pointer to TX queue structure. */ static void txq_free_elts(struct mlx5_txq_ctrl *txq_ctrl) { const uint16_t elts_n = 1 << txq_ctrl->txq.elts_n; const uint16_t elts_m = elts_n - 1; uint16_t elts_head = txq_ctrl->txq.elts_head; uint16_t elts_tail = txq_ctrl->txq.elts_tail; struct rte_mbuf *(*elts)[elts_n] = &txq_ctrl->txq.elts; DRV_LOG(DEBUG, "port %u Tx queue %u freeing WRs", PORT_ID(txq_ctrl->priv), txq_ctrl->txq.idx); txq_ctrl->txq.elts_head = 0; txq_ctrl->txq.elts_tail = 0; txq_ctrl->txq.elts_comp = 0; while (elts_tail != elts_head) { struct rte_mbuf *elt = (*elts)[elts_tail & elts_m]; assert(elt != NULL); rte_pktmbuf_free_seg(elt); #ifndef NDEBUG /* Poisoning. */ memset(&(*elts)[elts_tail & elts_m], 0x77, sizeof((*elts)[elts_tail & elts_m])); #endif ++elts_tail; } } /** * Returns the per-port supported offloads. * * @param dev * Pointer to Ethernet device. * * @return * Supported Tx offloads. */ uint64_t mlx5_get_tx_port_offloads(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; uint64_t offloads = (DEV_TX_OFFLOAD_MULTI_SEGS | DEV_TX_OFFLOAD_VLAN_INSERT); struct mlx5_dev_config *config = &priv->config; if (config->hw_csum) offloads |= (DEV_TX_OFFLOAD_IPV4_CKSUM | DEV_TX_OFFLOAD_UDP_CKSUM | DEV_TX_OFFLOAD_TCP_CKSUM); if (config->tso) offloads |= DEV_TX_OFFLOAD_TCP_TSO; if (config->swp) { if (config->hw_csum) offloads |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM; if (config->tso) offloads |= (DEV_TX_OFFLOAD_IP_TNL_TSO | DEV_TX_OFFLOAD_UDP_TNL_TSO); } if (config->tunnel_en) { if (config->hw_csum) offloads |= DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM; if (config->tso) offloads |= (DEV_TX_OFFLOAD_VXLAN_TNL_TSO | DEV_TX_OFFLOAD_GRE_TNL_TSO); } #ifdef HAVE_IBV_FLOW_DV_SUPPORT if (config->dv_flow_en) offloads |= DEV_TX_OFFLOAD_MATCH_METADATA; #endif return offloads; } /** * DPDK callback to configure a TX queue. * * @param dev * Pointer to Ethernet device structure. * @param idx * TX queue index. * @param desc * Number of descriptors to configure in queue. * @param socket * NUMA socket on which memory must be allocated. * @param[in] conf * Thresholds parameters. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, unsigned int socket, const struct rte_eth_txconf *conf) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_data *txq = (*priv->txqs)[idx]; struct mlx5_txq_ctrl *txq_ctrl = container_of(txq, struct mlx5_txq_ctrl, txq); if (desc <= MLX5_TX_COMP_THRESH) { DRV_LOG(WARNING, "port %u number of descriptors requested for Tx queue" " %u must be higher than MLX5_TX_COMP_THRESH, using %u" " instead of %u", dev->data->port_id, idx, MLX5_TX_COMP_THRESH + 1, desc); desc = MLX5_TX_COMP_THRESH + 1; } if (!rte_is_power_of_2(desc)) { desc = 1 << log2above(desc); DRV_LOG(WARNING, "port %u increased number of descriptors in Tx queue" " %u to the next power of two (%d)", dev->data->port_id, idx, desc); } DRV_LOG(DEBUG, "port %u configuring queue %u for %u descriptors", dev->data->port_id, idx, desc); if (idx >= priv->txqs_n) { DRV_LOG(ERR, "port %u Tx queue index out of range (%u >= %u)", dev->data->port_id, idx, priv->txqs_n); rte_errno = EOVERFLOW; return -rte_errno; } if (!mlx5_txq_releasable(dev, idx)) { rte_errno = EBUSY; DRV_LOG(ERR, "port %u unable to release queue index %u", dev->data->port_id, idx); return -rte_errno; } mlx5_txq_release(dev, idx); txq_ctrl = mlx5_txq_new(dev, idx, desc, socket, conf); if (!txq_ctrl) { DRV_LOG(ERR, "port %u unable to allocate queue index %u", dev->data->port_id, idx); return -rte_errno; } DRV_LOG(DEBUG, "port %u adding Tx queue %u to list", dev->data->port_id, idx); (*priv->txqs)[idx] = &txq_ctrl->txq; return 0; } /** * DPDK callback to release a TX queue. * * @param dpdk_txq * Generic TX queue pointer. */ void mlx5_tx_queue_release(void *dpdk_txq) { struct mlx5_txq_data *txq = (struct mlx5_txq_data *)dpdk_txq; struct mlx5_txq_ctrl *txq_ctrl; struct mlx5_priv *priv; unsigned int i; if (txq == NULL) return; txq_ctrl = container_of(txq, struct mlx5_txq_ctrl, txq); priv = txq_ctrl->priv; for (i = 0; (i != priv->txqs_n); ++i) if ((*priv->txqs)[i] == txq) { mlx5_txq_release(ETH_DEV(priv), i); DRV_LOG(DEBUG, "port %u removing Tx queue %u from list", PORT_ID(priv), txq->idx); break; } } /** * Initialize Tx UAR registers for primary process. * * @param txq_ctrl * Pointer to Tx queue control structure. */ static void txq_uar_init(struct mlx5_txq_ctrl *txq_ctrl) { struct mlx5_priv *priv = txq_ctrl->priv; struct mlx5_proc_priv *ppriv = MLX5_PROC_PRIV(PORT_ID(priv)); #ifndef RTE_ARCH_64 unsigned int lock_idx; const size_t page_size = sysconf(_SC_PAGESIZE); #endif assert(rte_eal_process_type() == RTE_PROC_PRIMARY); assert(ppriv); ppriv->uar_table[txq_ctrl->txq.idx] = txq_ctrl->bf_reg; #ifndef RTE_ARCH_64 /* Assign an UAR lock according to UAR page number */ lock_idx = (txq_ctrl->uar_mmap_offset / page_size) & MLX5_UAR_PAGE_NUM_MASK; txq_ctrl->txq.uar_lock = &priv->uar_lock[lock_idx]; #endif } /** * Remap UAR register of a Tx queue for secondary process. * * Remapped address is stored at the table in the process private structure of * the device, indexed by queue index. * * @param txq_ctrl * Pointer to Tx queue control structure. * @param fd * Verbs file descriptor to map UAR pages. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ static int txq_uar_init_secondary(struct mlx5_txq_ctrl *txq_ctrl, int fd) { struct mlx5_priv *priv = txq_ctrl->priv; struct mlx5_proc_priv *ppriv = MLX5_PROC_PRIV(PORT_ID(priv)); struct mlx5_txq_data *txq = &txq_ctrl->txq; void *addr; uintptr_t uar_va; uintptr_t offset; const size_t page_size = sysconf(_SC_PAGESIZE); assert(ppriv); /* * As rdma-core, UARs are mapped in size of OS page * size. Ref to libmlx5 function: mlx5_init_context() */ uar_va = (uintptr_t)txq_ctrl->bf_reg; offset = uar_va & (page_size - 1); /* Offset in page. */ addr = mmap(NULL, page_size, PROT_WRITE, MAP_SHARED, fd, txq_ctrl->uar_mmap_offset); if (addr == MAP_FAILED) { DRV_LOG(ERR, "port %u mmap failed for BF reg of txq %u", txq->port_id, txq->idx); rte_errno = ENXIO; return -rte_errno; } addr = RTE_PTR_ADD(addr, offset); ppriv->uar_table[txq->idx] = addr; return 0; } /** * Unmap UAR register of a Tx queue for secondary process. * * @param txq_ctrl * Pointer to Tx queue control structure. */ static void txq_uar_uninit_secondary(struct mlx5_txq_ctrl *txq_ctrl) { struct mlx5_proc_priv *ppriv = MLX5_PROC_PRIV(PORT_ID(txq_ctrl->priv)); const size_t page_size = sysconf(_SC_PAGESIZE); void *addr; addr = ppriv->uar_table[txq_ctrl->txq.idx]; munmap(RTE_PTR_ALIGN_FLOOR(addr, page_size), page_size); } /** * Initialize Tx UAR registers for secondary process. * * @param dev * Pointer to Ethernet device. * @param fd * Verbs file descriptor to map UAR pages. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */ int mlx5_tx_uar_init_secondary(struct rte_eth_dev *dev, int fd) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_data *txq; struct mlx5_txq_ctrl *txq_ctrl; unsigned int i; int ret; assert(rte_eal_process_type() == RTE_PROC_SECONDARY); for (i = 0; i != priv->txqs_n; ++i) { if (!(*priv->txqs)[i]) continue; txq = (*priv->txqs)[i]; txq_ctrl = container_of(txq, struct mlx5_txq_ctrl, txq); assert(txq->idx == (uint16_t)i); ret = txq_uar_init_secondary(txq_ctrl, fd); if (ret) goto error; } return 0; error: /* Rollback. */ do { if (!(*priv->txqs)[i]) continue; txq = (*priv->txqs)[i]; txq_ctrl = container_of(txq, struct mlx5_txq_ctrl, txq); txq_uar_uninit_secondary(txq_ctrl); } while (i--); return -rte_errno; } /** * Create the Tx queue Verbs object. * * @param dev * Pointer to Ethernet device. * @param idx * Queue index in DPDK Tx queue array. * * @return * The Verbs object initialised, NULL otherwise and rte_errno is set. */ struct mlx5_txq_ibv * mlx5_txq_ibv_new(struct rte_eth_dev *dev, uint16_t idx) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_data *txq_data = (*priv->txqs)[idx]; struct mlx5_txq_ctrl *txq_ctrl = container_of(txq_data, struct mlx5_txq_ctrl, txq); struct mlx5_txq_ibv tmpl; struct mlx5_txq_ibv *txq_ibv = NULL; union { struct ibv_qp_init_attr_ex init; struct ibv_cq_init_attr_ex cq; struct ibv_qp_attr mod; } attr; unsigned int cqe_n; struct mlx5dv_qp qp = { .comp_mask = MLX5DV_QP_MASK_UAR_MMAP_OFFSET }; struct mlx5dv_cq cq_info; struct mlx5dv_obj obj; const int desc = 1 << txq_data->elts_n; int ret = 0; #ifdef HAVE_IBV_FLOW_DV_SUPPORT /* If using DevX, need additional mask to read tisn value. */ if (priv->config.devx && !priv->sh->tdn) qp.comp_mask |= MLX5DV_QP_MASK_RAW_QP_HANDLES; #endif assert(txq_data); priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_TX_QUEUE; priv->verbs_alloc_ctx.obj = txq_ctrl; if (mlx5_getenv_int("MLX5_ENABLE_CQE_COMPRESSION")) { DRV_LOG(ERR, "port %u MLX5_ENABLE_CQE_COMPRESSION must never be set", dev->data->port_id); rte_errno = EINVAL; return NULL; } memset(&tmpl, 0, sizeof(struct mlx5_txq_ibv)); attr.cq = (struct ibv_cq_init_attr_ex){ .comp_mask = 0, }; cqe_n = desc / MLX5_TX_COMP_THRESH + 1 + MLX5_TX_COMP_THRESH_INLINE_DIV; tmpl.cq = mlx5_glue->create_cq(priv->sh->ctx, cqe_n, NULL, NULL, 0); if (tmpl.cq == NULL) { DRV_LOG(ERR, "port %u Tx queue %u CQ creation failure", dev->data->port_id, idx); rte_errno = errno; goto error; } attr.init = (struct ibv_qp_init_attr_ex){ /* CQ to be associated with the send queue. */ .send_cq = tmpl.cq, /* CQ to be associated with the receive queue. */ .recv_cq = tmpl.cq, .cap = { /* Max number of outstanding WRs. */ .max_send_wr = ((priv->sh->device_attr.orig_attr.max_qp_wr < desc) ? priv->sh->device_attr.orig_attr.max_qp_wr : desc), /* * Max number of scatter/gather elements in a WR, * must be 1 to prevent libmlx5 from trying to affect * too much memory. TX gather is not impacted by the * device_attr.max_sge limit and will still work * properly. */ .max_send_sge = 1, }, .qp_type = IBV_QPT_RAW_PACKET, /* * Do *NOT* enable this, completions events are managed per * Tx burst. */ .sq_sig_all = 0, .pd = priv->sh->pd, .comp_mask = IBV_QP_INIT_ATTR_PD, }; if (txq_data->inlen_send) attr.init.cap.max_inline_data = txq_ctrl->max_inline_data; if (txq_data->tso_en) { attr.init.max_tso_header = txq_ctrl->max_tso_header; attr.init.comp_mask |= IBV_QP_INIT_ATTR_MAX_TSO_HEADER; } tmpl.qp = mlx5_glue->create_qp_ex(priv->sh->ctx, &attr.init); if (tmpl.qp == NULL) { DRV_LOG(ERR, "port %u Tx queue %u QP creation failure", dev->data->port_id, idx); rte_errno = errno; goto error; } attr.mod = (struct ibv_qp_attr){ /* Move the QP to this state. */ .qp_state = IBV_QPS_INIT, /* IB device port number. */ .port_num = (uint8_t)priv->ibv_port, }; ret = mlx5_glue->modify_qp(tmpl.qp, &attr.mod, (IBV_QP_STATE | IBV_QP_PORT)); if (ret) { DRV_LOG(ERR, "port %u Tx queue %u QP state to IBV_QPS_INIT failed", dev->data->port_id, idx); rte_errno = errno; goto error; } attr.mod = (struct ibv_qp_attr){ .qp_state = IBV_QPS_RTR }; ret = mlx5_glue->modify_qp(tmpl.qp, &attr.mod, IBV_QP_STATE); if (ret) { DRV_LOG(ERR, "port %u Tx queue %u QP state to IBV_QPS_RTR failed", dev->data->port_id, idx); rte_errno = errno; goto error; } attr.mod.qp_state = IBV_QPS_RTS; ret = mlx5_glue->modify_qp(tmpl.qp, &attr.mod, IBV_QP_STATE); if (ret) { DRV_LOG(ERR, "port %u Tx queue %u QP state to IBV_QPS_RTS failed", dev->data->port_id, idx); rte_errno = errno; goto error; } txq_ibv = rte_calloc_socket(__func__, 1, sizeof(struct mlx5_txq_ibv), 0, txq_ctrl->socket); if (!txq_ibv) { DRV_LOG(ERR, "port %u Tx queue %u cannot allocate memory", dev->data->port_id, idx); rte_errno = ENOMEM; goto error; } obj.cq.in = tmpl.cq; obj.cq.out = &cq_info; obj.qp.in = tmpl.qp; obj.qp.out = &qp; ret = mlx5_glue->dv_init_obj(&obj, MLX5DV_OBJ_CQ | MLX5DV_OBJ_QP); if (ret != 0) { rte_errno = errno; goto error; } if (cq_info.cqe_size != RTE_CACHE_LINE_SIZE) { DRV_LOG(ERR, "port %u wrong MLX5_CQE_SIZE environment variable" " value: it should be set to %u", dev->data->port_id, RTE_CACHE_LINE_SIZE); rte_errno = EINVAL; goto error; } txq_data->cqe_n = log2above(cq_info.cqe_cnt); txq_data->cqe_s = 1 << txq_data->cqe_n; txq_data->cqe_m = txq_data->cqe_s - 1; txq_data->qp_num_8s = tmpl.qp->qp_num << 8; txq_data->wqes = qp.sq.buf; txq_data->wqe_n = log2above(qp.sq.wqe_cnt); txq_data->wqe_s = 1 << txq_data->wqe_n; txq_data->wqe_m = txq_data->wqe_s - 1; txq_data->wqes_end = txq_data->wqes + txq_data->wqe_s; txq_data->qp_db = &qp.dbrec[MLX5_SND_DBR]; txq_data->cq_db = cq_info.dbrec; txq_data->cqes = (volatile struct mlx5_cqe *)cq_info.buf; txq_data->cq_ci = 0; #ifndef NDEBUG txq_data->cq_pi = 0; #endif txq_data->wqe_ci = 0; txq_data->wqe_pi = 0; txq_data->wqe_comp = 0; txq_data->wqe_thres = txq_data->wqe_s / MLX5_TX_COMP_THRESH_INLINE_DIV; #ifdef HAVE_IBV_FLOW_DV_SUPPORT /* * If using DevX need to query and store TIS transport domain value. * This is done once per port. * Will use this value on Rx, when creating matching TIR. */ if (priv->config.devx && !priv->sh->tdn) { ret = mlx5_devx_cmd_qp_query_tis_td(tmpl.qp, qp.tisn, &priv->sh->tdn); if (ret) { DRV_LOG(ERR, "Fail to query port %u Tx queue %u QP TIS " "transport domain", dev->data->port_id, idx); rte_errno = EINVAL; goto error; } else { DRV_LOG(DEBUG, "port %u Tx queue %u TIS number %d " "transport domain %d", dev->data->port_id, idx, qp.tisn, priv->sh->tdn); } } #endif txq_ibv->qp = tmpl.qp; txq_ibv->cq = tmpl.cq; rte_atomic32_inc(&txq_ibv->refcnt); txq_ctrl->bf_reg = qp.bf.reg; if (qp.comp_mask & MLX5DV_QP_MASK_UAR_MMAP_OFFSET) { txq_ctrl->uar_mmap_offset = qp.uar_mmap_offset; DRV_LOG(DEBUG, "port %u: uar_mmap_offset 0x%"PRIx64, dev->data->port_id, txq_ctrl->uar_mmap_offset); } else { DRV_LOG(ERR, "port %u failed to retrieve UAR info, invalid" " libmlx5.so", dev->data->port_id); rte_errno = EINVAL; goto error; } txq_uar_init(txq_ctrl); LIST_INSERT_HEAD(&priv->txqsibv, txq_ibv, next); txq_ibv->txq_ctrl = txq_ctrl; priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_NONE; return txq_ibv; error: ret = rte_errno; /* Save rte_errno before cleanup. */ if (tmpl.cq) claim_zero(mlx5_glue->destroy_cq(tmpl.cq)); if (tmpl.qp) claim_zero(mlx5_glue->destroy_qp(tmpl.qp)); if (txq_ibv) rte_free(txq_ibv); priv->verbs_alloc_ctx.type = MLX5_VERBS_ALLOC_TYPE_NONE; rte_errno = ret; /* Restore rte_errno. */ return NULL; } /** * Get an Tx queue Verbs object. * * @param dev * Pointer to Ethernet device. * @param idx * Queue index in DPDK Tx queue array. * * @return * The Verbs object if it exists. */ struct mlx5_txq_ibv * mlx5_txq_ibv_get(struct rte_eth_dev *dev, uint16_t idx) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_ctrl *txq_ctrl; if (idx >= priv->txqs_n) return NULL; if (!(*priv->txqs)[idx]) return NULL; txq_ctrl = container_of((*priv->txqs)[idx], struct mlx5_txq_ctrl, txq); if (txq_ctrl->ibv) rte_atomic32_inc(&txq_ctrl->ibv->refcnt); return txq_ctrl->ibv; } /** * Release an Tx verbs queue object. * * @param txq_ibv * Verbs Tx queue object. * * @return * 1 while a reference on it exists, 0 when freed. */ int mlx5_txq_ibv_release(struct mlx5_txq_ibv *txq_ibv) { assert(txq_ibv); if (rte_atomic32_dec_and_test(&txq_ibv->refcnt)) { claim_zero(mlx5_glue->destroy_qp(txq_ibv->qp)); claim_zero(mlx5_glue->destroy_cq(txq_ibv->cq)); LIST_REMOVE(txq_ibv, next); rte_free(txq_ibv); return 0; } return 1; } /** * Verify the Verbs Tx queue list is empty * * @param dev * Pointer to Ethernet device. * * @return * The number of object not released. */ int mlx5_txq_ibv_verify(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; int ret = 0; struct mlx5_txq_ibv *txq_ibv; LIST_FOREACH(txq_ibv, &priv->txqsibv, next) { DRV_LOG(DEBUG, "port %u Verbs Tx queue %u still referenced", dev->data->port_id, txq_ibv->txq_ctrl->txq.idx); ++ret; } return ret; } /** * Calculate the total number of WQEBB for Tx queue. * * Simplified version of calc_sq_size() in rdma-core. * * @param txq_ctrl * Pointer to Tx queue control structure. * * @return * The number of WQEBB. */ static int txq_calc_wqebb_cnt(struct mlx5_txq_ctrl *txq_ctrl) { unsigned int wqe_size; const unsigned int desc = 1 << txq_ctrl->txq.elts_n; wqe_size = MLX5_WQE_CSEG_SIZE + MLX5_WQE_ESEG_SIZE + MLX5_WSEG_SIZE - MLX5_ESEG_MIN_INLINE_SIZE + txq_ctrl->max_inline_data; return rte_align32pow2(wqe_size * desc) / MLX5_WQE_SIZE; } /** * Set Tx queue parameters from device configuration. * * @param txq_ctrl * Pointer to Tx queue control structure. */ static void txq_set_params(struct mlx5_txq_ctrl *txq_ctrl) { struct mlx5_priv *priv = txq_ctrl->priv; struct mlx5_dev_config *config = &priv->config; unsigned int inlen_send; /* Inline data for ordinary SEND.*/ unsigned int inlen_empw; /* Inline data for enhanced MPW. */ unsigned int inlen_mode; /* Minimal required Inline data. */ unsigned int txqs_inline; /* Min Tx queues to enable inline. */ uint64_t dev_txoff = priv->dev_data->dev_conf.txmode.offloads; bool tso = txq_ctrl->txq.offloads & (DEV_TX_OFFLOAD_TCP_TSO | DEV_TX_OFFLOAD_VXLAN_TNL_TSO | DEV_TX_OFFLOAD_GRE_TNL_TSO | DEV_TX_OFFLOAD_IP_TNL_TSO | DEV_TX_OFFLOAD_UDP_TNL_TSO); bool vlan_inline; unsigned int temp; if (config->txqs_inline == MLX5_ARG_UNSET) txqs_inline = #if defined(RTE_ARCH_ARM64) (priv->sh->pci_dev->id.device_id == PCI_DEVICE_ID_MELLANOX_CONNECTX5BF) ? MLX5_INLINE_MAX_TXQS_BLUEFIELD : #endif MLX5_INLINE_MAX_TXQS; else txqs_inline = (unsigned int)config->txqs_inline; inlen_send = (config->txq_inline_max == MLX5_ARG_UNSET) ? MLX5_SEND_DEF_INLINE_LEN : (unsigned int)config->txq_inline_max; inlen_empw = (config->txq_inline_mpw == MLX5_ARG_UNSET) ? MLX5_EMPW_DEF_INLINE_LEN : (unsigned int)config->txq_inline_mpw; inlen_mode = (config->txq_inline_min == MLX5_ARG_UNSET) ? 0 : (unsigned int)config->txq_inline_min; if (config->mps != MLX5_MPW_ENHANCED) inlen_empw = 0; /* * If there is requested minimal amount of data to inline * we MUST enable inlining. This is a case for ConnectX-4 * which usually requires L2 inlined for correct operating * and ConnectX-4LX which requires L2-L4 inlined to * support E-Switch Flows. */ if (inlen_mode) { if (inlen_mode <= MLX5_ESEG_MIN_INLINE_SIZE) { /* * Optimize minimal inlining for single * segment packets to fill one WQEBB * without gaps. */ temp = MLX5_ESEG_MIN_INLINE_SIZE; } else { temp = inlen_mode - MLX5_ESEG_MIN_INLINE_SIZE; temp = RTE_ALIGN(temp, MLX5_WSEG_SIZE) + MLX5_ESEG_MIN_INLINE_SIZE; temp = RTE_MIN(temp, MLX5_SEND_MAX_INLINE_LEN); } if (temp != inlen_mode) { DRV_LOG(INFO, "port %u minimal required inline setting" " aligned from %u to %u", PORT_ID(priv), inlen_mode, temp); inlen_mode = temp; } } /* * If port is configured to support VLAN insertion and device * does not support this feature by HW (for NICs before ConnectX-5 * or in case of wqe_vlan_insert flag is not set) we must enable * data inline on all queues because it is supported by single * tx_burst routine. */ txq_ctrl->txq.vlan_en = config->hw_vlan_insert; vlan_inline = (dev_txoff & DEV_TX_OFFLOAD_VLAN_INSERT) && !config->hw_vlan_insert; /* * If there are few Tx queues it is prioritized * to save CPU cycles and disable data inlining at all. */ if (inlen_send && priv->txqs_n >= txqs_inline) { /* * The data sent with ordinal MLX5_OPCODE_SEND * may be inlined in Ethernet Segment, align the * length accordingly to fit entire WQEBBs. */ temp = (inlen_send / MLX5_WQE_SIZE) * MLX5_WQE_SIZE + MLX5_ESEG_MIN_INLINE_SIZE + MLX5_WQE_DSEG_SIZE; temp = RTE_MIN(temp, MLX5_WQE_SIZE_MAX + MLX5_ESEG_MIN_INLINE_SIZE - MLX5_WQE_CSEG_SIZE - MLX5_WQE_ESEG_SIZE - MLX5_WQE_DSEG_SIZE * 2); temp = RTE_MIN(temp, MLX5_SEND_MAX_INLINE_LEN); temp = RTE_MAX(temp, inlen_mode); if (temp != inlen_send) { DRV_LOG(INFO, "port %u ordinary send inline setting" " aligned from %u to %u", PORT_ID(priv), inlen_send, temp); inlen_send = temp; } /* * Not aligned to cache lines, but to WQEs. * First bytes of data (initial alignment) * is going to be copied explicitly at the * beginning of inlining buffer in Ethernet * Segment. */ assert(inlen_send >= MLX5_ESEG_MIN_INLINE_SIZE); assert(inlen_send <= MLX5_WQE_SIZE_MAX + MLX5_ESEG_MIN_INLINE_SIZE - MLX5_WQE_CSEG_SIZE - MLX5_WQE_ESEG_SIZE - MLX5_WQE_DSEG_SIZE * 2); } else if (inlen_mode) { /* * If minimal inlining is requested we must * enable inlining in general, despite the * number of configured queues. Ignore the * txq_inline_max devarg, this is not * full-featured inline. */ inlen_send = inlen_mode; inlen_empw = 0; } else if (vlan_inline) { /* * Hardware does not report offload for * VLAN insertion, we must enable data inline * to implement feature by software. */ inlen_send = MLX5_ESEG_MIN_INLINE_SIZE; inlen_empw = 0; } else { inlen_send = 0; inlen_empw = 0; } txq_ctrl->txq.inlen_send = inlen_send; txq_ctrl->txq.inlen_mode = inlen_mode; txq_ctrl->txq.inlen_empw = 0; if (inlen_send && inlen_empw && priv->txqs_n >= txqs_inline) { /* * The data sent with MLX5_OPCODE_ENHANCED_MPSW * may be inlined in Data Segment, align the * length accordingly to fit entire WQEBBs. */ temp = (inlen_empw + MLX5_WQE_SIZE - 1) / MLX5_WQE_SIZE; temp = temp * MLX5_WQE_SIZE + MLX5_DSEG_MIN_INLINE_SIZE - MLX5_WQE_DSEG_SIZE; temp = RTE_MIN(temp, MLX5_WQE_SIZE_MAX + MLX5_DSEG_MIN_INLINE_SIZE - MLX5_WQE_CSEG_SIZE - MLX5_WQE_ESEG_SIZE - MLX5_WQE_DSEG_SIZE); temp = RTE_MIN(temp, MLX5_EMPW_MAX_INLINE_LEN); if (temp != inlen_empw) { DRV_LOG(INFO, "port %u enhanced empw inline setting" " aligned from %u to %u", PORT_ID(priv), inlen_empw, temp); inlen_empw = temp; } assert(inlen_empw >= MLX5_ESEG_MIN_INLINE_SIZE); assert(inlen_empw <= MLX5_WQE_SIZE_MAX + MLX5_DSEG_MIN_INLINE_SIZE - MLX5_WQE_CSEG_SIZE - MLX5_WQE_ESEG_SIZE - MLX5_WQE_DSEG_SIZE); txq_ctrl->txq.inlen_empw = inlen_empw; } txq_ctrl->max_inline_data = RTE_MAX(inlen_send, inlen_empw); if (tso) { txq_ctrl->max_tso_header = MLX5_MAX_TSO_HEADER; txq_ctrl->max_inline_data = RTE_MAX(txq_ctrl->max_inline_data, MLX5_MAX_TSO_HEADER); txq_ctrl->txq.tso_en = 1; } txq_ctrl->txq.tunnel_en = config->tunnel_en | config->swp; txq_ctrl->txq.swp_en = ((DEV_TX_OFFLOAD_IP_TNL_TSO | DEV_TX_OFFLOAD_UDP_TNL_TSO | DEV_TX_OFFLOAD_OUTER_IPV4_CKSUM) & txq_ctrl->txq.offloads) && config->swp; } /** * Create a DPDK Tx queue. * * @param dev * Pointer to Ethernet device. * @param idx * TX queue index. * @param desc * Number of descriptors to configure in queue. * @param socket * NUMA socket on which memory must be allocated. * @param[in] conf * Thresholds parameters. * * @return * A DPDK queue object on success, NULL otherwise and rte_errno is set. */ struct mlx5_txq_ctrl * mlx5_txq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, unsigned int socket, const struct rte_eth_txconf *conf) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_ctrl *tmpl; tmpl = rte_calloc_socket("TXQ", 1, sizeof(*tmpl) + desc * sizeof(struct rte_mbuf *), 0, socket); if (!tmpl) { rte_errno = ENOMEM; return NULL; } if (mlx5_mr_btree_init(&tmpl->txq.mr_ctrl.cache_bh, MLX5_MR_BTREE_CACHE_N, socket)) { /* rte_errno is already set. */ goto error; } /* Save pointer of global generation number to check memory event. */ tmpl->txq.mr_ctrl.dev_gen_ptr = &priv->sh->mr.dev_gen; assert(desc > MLX5_TX_COMP_THRESH); tmpl->txq.offloads = conf->offloads | dev->data->dev_conf.txmode.offloads; tmpl->priv = priv; tmpl->socket = socket; tmpl->txq.elts_n = log2above(desc); tmpl->txq.elts_s = desc; tmpl->txq.elts_m = desc - 1; tmpl->txq.port_id = dev->data->port_id; tmpl->txq.idx = idx; txq_set_params(tmpl); if (txq_calc_wqebb_cnt(tmpl) > priv->sh->device_attr.orig_attr.max_qp_wr) { DRV_LOG(ERR, "port %u Tx WQEBB count (%d) exceeds the limit (%d)," " try smaller queue size", dev->data->port_id, txq_calc_wqebb_cnt(tmpl), priv->sh->device_attr.orig_attr.max_qp_wr); rte_errno = ENOMEM; goto error; } rte_atomic32_inc(&tmpl->refcnt); LIST_INSERT_HEAD(&priv->txqsctrl, tmpl, next); return tmpl; error: rte_free(tmpl); return NULL; } /** * Get a Tx queue. * * @param dev * Pointer to Ethernet device. * @param idx * TX queue index. * * @return * A pointer to the queue if it exists. */ struct mlx5_txq_ctrl * mlx5_txq_get(struct rte_eth_dev *dev, uint16_t idx) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_ctrl *ctrl = NULL; if ((*priv->txqs)[idx]) { ctrl = container_of((*priv->txqs)[idx], struct mlx5_txq_ctrl, txq); mlx5_txq_ibv_get(dev, idx); rte_atomic32_inc(&ctrl->refcnt); } return ctrl; } /** * Release a Tx queue. * * @param dev * Pointer to Ethernet device. * @param idx * TX queue index. * * @return * 1 while a reference on it exists, 0 when freed. */ int mlx5_txq_release(struct rte_eth_dev *dev, uint16_t idx) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_ctrl *txq; if (!(*priv->txqs)[idx]) return 0; txq = container_of((*priv->txqs)[idx], struct mlx5_txq_ctrl, txq); if (txq->ibv && !mlx5_txq_ibv_release(txq->ibv)) txq->ibv = NULL; if (rte_atomic32_dec_and_test(&txq->refcnt)) { txq_free_elts(txq); mlx5_mr_btree_free(&txq->txq.mr_ctrl.cache_bh); LIST_REMOVE(txq, next); rte_free(txq); (*priv->txqs)[idx] = NULL; return 0; } return 1; } /** * Verify if the queue can be released. * * @param dev * Pointer to Ethernet device. * @param idx * TX queue index. * * @return * 1 if the queue can be released. */ int mlx5_txq_releasable(struct rte_eth_dev *dev, uint16_t idx) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_ctrl *txq; if (!(*priv->txqs)[idx]) return -1; txq = container_of((*priv->txqs)[idx], struct mlx5_txq_ctrl, txq); return (rte_atomic32_read(&txq->refcnt) == 1); } /** * Verify the Tx Queue list is empty * * @param dev * Pointer to Ethernet device. * * @return * The number of object not released. */ int mlx5_txq_verify(struct rte_eth_dev *dev) { struct mlx5_priv *priv = dev->data->dev_private; struct mlx5_txq_ctrl *txq_ctrl; int ret = 0; LIST_FOREACH(txq_ctrl, &priv->txqsctrl, next) { DRV_LOG(DEBUG, "port %u Tx queue %u still referenced", dev->data->port_id, txq_ctrl->txq.idx); ++ret; } return ret; }