From: Viacheslav Ovsiienko Date: Sun, 21 Jul 2019 14:24:57 +0000 (+0000) Subject: net/mlx5: add Tx configuration and setup X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=38b4b397a57d;p=dpdk.git net/mlx5: add Tx configuration and setup This patch updates the Tx datapath control and configuration structures and code for managing Tx datapath settings. Signed-off-by: Viacheslav Ovsiienko Acked-by: Yongseok Koh --- diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index ff63ad1c0e..33ca36d29a 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -1184,6 +1184,127 @@ out: 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: + case PCI_DEVICE_ID_MELLANOX_CONNECTX4LX: + case PCI_DEVICE_ID_MELLANOX_CONNECTX4LXVF: + 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; + break; + default: + config->txq_inline_min = MLX5_INLINE_HSIZE_NONE; + break; + } +exit: + DRV_LOG(DEBUG, "min tx inline configured: %d", config->txq_inline_min); +} + /** * Spawn an Ethernet device from Verbs information. * @@ -1677,6 +1798,8 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev, #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; if (config.dv_flow_en) { diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index 6ea9d4e181..7aad94d93f 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -194,6 +194,7 @@ TAILQ_HEAD(mlx5_flows, rte_flow); struct mlx5_dev_config { unsigned int hw_csum:1; /* Checksum offload is supported. */ unsigned int hw_vlan_strip:1; /* VLAN stripping is supported. */ + unsigned int hw_vlan_insert:1; /* VLAN insertion in WQE is supported. */ unsigned int hw_fcs_strip:1; /* FCS stripping is supported. */ unsigned int hw_padding:1; /* End alignment padding is supported. */ unsigned int vf:1; /* This is a VF. */ @@ -203,7 +204,6 @@ struct mlx5_dev_config { unsigned int cqe_comp:1; /* CQE compression is enabled. */ unsigned int cqe_pad:1; /* CQE padding is enabled. */ unsigned int tso:1; /* Whether TSO is supported. */ - unsigned int tx_inline:1; /* Engage TX data inlining. */ unsigned int rx_vec_en:1; /* Rx vector is enabled. */ unsigned int mr_ext_memseg_en:1; /* Whether memseg should be extended for MR creation. */ diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c index f2d69187d6..13f943177c 100644 --- a/drivers/net/mlx5/mlx5_rxtx.c +++ b/drivers/net/mlx5/mlx5_rxtx.c @@ -507,7 +507,7 @@ mlx5_tx_error_cqe_handle(struct mlx5_txq_data *txq, MKSTR(err_str, "Unexpected CQE error syndrome " "0x%02x CQN = %u SQN = %u wqe_counter = %u " "wq_ci = %u cq_ci = %u", err_cqe->syndrome, - txq_ctrl->cqn, txq->qp_num_8s >> 8, + txq->cqe_s, txq->qp_num_8s >> 8, rte_be_to_cpu_16(err_cqe->wqe_counter), txq->wqe_ci, txq->cq_ci); MKSTR(name, "dpdk_mlx5_port_%u_txq_%u_index_%u_%u", @@ -516,7 +516,7 @@ mlx5_tx_error_cqe_handle(struct mlx5_txq_data *txq, mlx5_dump_debug_information(name, NULL, err_str, 0); mlx5_dump_debug_information(name, "MLX5 Error CQ:", (const void *)((uintptr_t) - &(*txq->cqes)[0]), + txq->cqes), sizeof(*err_cqe) * (1 << txq->cqe_n)); mlx5_dump_debug_information(name, "MLX5 Error SQ:", diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h index acde09d4d0..03ddd9effe 100644 --- a/drivers/net/mlx5/mlx5_rxtx.h +++ b/drivers/net/mlx5/mlx5_rxtx.h @@ -188,37 +188,61 @@ struct mlx5_hrxq { uint8_t rss_key[]; /* Hash key. */ }; +/* TX queue send local data. */ +__extension__ +struct mlx5_txq_local { + struct mlx5_wqe *wqe_last; /* last sent WQE pointer. */ + struct rte_mbuf *mbuf; /* first mbuf to process. */ + uint16_t pkts_copy; /* packets copied to elts. */ + uint16_t pkts_sent; /* packets sent. */ + uint16_t elts_free; /* available elts remain. */ + uint16_t wqe_free; /* available wqe remain. */ + uint16_t mbuf_off; /* data offset in current mbuf. */ + uint16_t mbuf_nseg; /* number of remaining mbuf. */ +}; + /* TX queue descriptor. */ __extension__ struct mlx5_txq_data { uint16_t elts_head; /* Current counter in (*elts)[]. */ uint16_t elts_tail; /* Counter of first element awaiting completion. */ - uint16_t elts_comp; /* Counter since last completion request. */ - uint16_t mpw_comp; /* WQ index since last completion request. */ + uint16_t elts_comp; /* elts index since last completion request. */ + uint16_t elts_s; /* Number of mbuf elements. */ + uint16_t elts_m; /* Mask for mbuf elements indices. */ + /* Fields related to elts mbuf storage. */ + uint16_t wqe_ci; /* Consumer index for work queue. */ + uint16_t wqe_pi; /* Producer index for work queue. */ + uint16_t wqe_s; /* Number of WQ elements. */ + uint16_t wqe_m; /* Mask Number for WQ elements. */ + uint16_t wqe_comp; /* WQE index since last completion request. */ + uint16_t wqe_thres; /* WQE threshold to request completion in CQ. */ + /* WQ related fields. */ uint16_t cq_ci; /* Consumer index for completion queue. */ #ifndef NDEBUG - uint16_t cq_pi; /* Producer index for completion queue. */ + uint16_t cq_pi; /* Counter of issued CQE "always" requests. */ #endif - uint16_t wqe_ci; /* Consumer index for work queue. */ - uint16_t wqe_pi; /* Producer index for work queue. */ - uint16_t elts_n:4; /* (*elts)[] length (in log2). */ + uint16_t cqe_s; /* Number of CQ elements. */ + uint16_t cqe_m; /* Mask for CQ indices. */ + /* CQ related fields. */ + uint16_t elts_n:4; /* elts[] length (in log2). */ uint16_t cqe_n:4; /* Number of CQ elements (in log2). */ - uint16_t wqe_n:4; /* Number of of WQ elements (in log2). */ + uint16_t wqe_n:4; /* Number of WQ elements (in log2). */ uint16_t tso_en:1; /* When set hardware TSO is enabled. */ uint16_t tunnel_en:1; /* When set TX offload for tunneled packets are supported. */ uint16_t swp_en:1; /* Whether SW parser is enabled. */ - uint16_t mpw_hdr_dseg:1; /* Enable DSEGs in the title WQEBB. */ - uint16_t max_inline; /* Multiple of RTE_CACHE_LINE_SIZE to inline. */ - uint16_t inline_max_packet_sz; /* Max packet size for inlining. */ + uint16_t vlan_en:1; /* VLAN insertion in WQE is supported. */ + uint16_t inlen_send; /* Ordinary send data inline size. */ + uint16_t inlen_empw; /* eMPW max packet size to inline. */ + uint16_t inlen_mode; /* Minimal data length to inline. */ uint32_t qp_num_8s; /* QP number shifted by 8. */ uint64_t offloads; /* Offloads for Tx Queue. */ struct mlx5_mr_ctrl mr_ctrl; /* MR control descriptor. */ - volatile struct mlx5_cqe (*cqes)[]; /* Completion queue. */ - volatile void *wqes; /* Work queue (use volatile to write into). */ + struct mlx5_wqe *wqes; /* Work queue. */ + struct mlx5_wqe *wqes_end; /* Work queue array limit. */ + volatile struct mlx5_cqe *cqes; /* Completion queue. */ volatile uint32_t *qp_db; /* Work queue doorbell. */ volatile uint32_t *cq_db; /* Completion queue doorbell. */ - struct rte_mbuf *(*elts)[]; /* TX elements. */ uint16_t port_id; /* Port ID of device. */ uint16_t idx; /* Queue index. */ struct mlx5_txq_stats stats; /* TX queue counters. */ @@ -226,6 +250,8 @@ struct mlx5_txq_data { rte_spinlock_t *uar_lock; /* UAR access lock required for 32bit implementations */ #endif + struct rte_mbuf *elts[0]; + /* Storage for queued packets, must be the last field. */ } __rte_cache_aligned; /* Verbs Rx queue elements. */ @@ -239,7 +265,6 @@ struct mlx5_txq_ibv { /* TX queue control descriptor. */ struct mlx5_txq_ctrl { - struct mlx5_txq_data txq; /* Data path structure. */ LIST_ENTRY(mlx5_txq_ctrl) next; /* Pointer to the next element. */ rte_atomic32_t refcnt; /* Reference counter. */ unsigned int socket; /* CPU socket ID for allocations. */ @@ -249,8 +274,9 @@ struct mlx5_txq_ctrl { struct mlx5_priv *priv; /* Back pointer to private data. */ off_t uar_mmap_offset; /* UAR mmap offset for non-primary process. */ void *bf_reg; /* BlueFlame register from Verbs. */ - uint32_t cqn; /* CQ number. */ uint16_t dump_file_n; /* Number of dump files. */ + struct mlx5_txq_data txq; /* Data path structure. */ + /* Must be the last field in the structure, contains elts[]. */ }; #define MLX5_TX_BFREG(txq) \ diff --git a/drivers/net/mlx5/mlx5_txq.c b/drivers/net/mlx5/mlx5_txq.c index 55892e281d..2f3aa5b28f 100644 --- a/drivers/net/mlx5/mlx5_txq.c +++ b/drivers/net/mlx5/mlx5_txq.c @@ -47,7 +47,7 @@ txq_alloc_elts(struct mlx5_txq_ctrl *txq_ctrl) unsigned int i; for (i = 0; (i != elts_n); ++i) - (*txq_ctrl->txq.elts)[i] = NULL; + 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; @@ -68,7 +68,7 @@ txq_free_elts(struct mlx5_txq_ctrl *txq_ctrl) 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; + 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); @@ -411,7 +411,8 @@ mlx5_txq_ibv_new(struct rte_eth_dev *dev, uint16_t idx) attr.cq = (struct ibv_cq_init_attr_ex){ .comp_mask = 0, }; - cqe_n = desc / MLX5_TX_COMP_THRESH + 1; + 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", @@ -449,7 +450,7 @@ mlx5_txq_ibv_new(struct rte_eth_dev *dev, uint16_t idx) .pd = priv->sh->pd, .comp_mask = IBV_QP_INIT_ATTR_PD, }; - if (txq_data->max_inline) + 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; @@ -523,25 +524,29 @@ mlx5_txq_ibv_new(struct rte_eth_dev *dev, uint16_t idx) 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 (*)[]) - (uintptr_t)cq_info.buf; + 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; txq_ibv->qp = tmpl.qp; txq_ibv->cq = tmpl.cq; rte_atomic32_inc(&txq_ibv->refcnt); txq_ctrl->bf_reg = qp.bf.reg; - txq_ctrl->cqn = cq_info.cqn; txq_uar_init(txq_ctrl); if (qp.comp_mask & MLX5DV_QP_MASK_UAR_MMAP_OFFSET) { txq_ctrl->uar_mmap_offset = qp.uar_mmap_offset; @@ -663,7 +668,11 @@ 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_SIZE + txq_ctrl->max_inline_data; + 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; } @@ -676,7 +685,189 @@ txq_calc_wqebb_cnt(struct mlx5_txq_ctrl *txq_ctrl) static void txq_set_params(struct mlx5_txq_ctrl *txq_ctrl) { - (void)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 (vlan_inline) + inlen_send = RTE_MAX(inlen_send, MLX5_ESEG_MIN_INLINE_SIZE); + /* + * 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) || vlan_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); + txq_ctrl->txq.inlen_send = inlen_send; + txq_ctrl->txq.inlen_mode = inlen_mode; + txq_ctrl->txq.inlen_empw = 0; + } else { + /* + * If minimal inlining is requested we must + * enable inlining in general, despite the + * number of configured queues. + */ + inlen_send = inlen_mode; + if (inlen_mode) { + /* + * Extend space for inline data to allow + * optional alignment of data buffer + * start address, it may improve PCIe + * performance. + */ + inlen_send = RTE_MIN(inlen_send + MLX5_WQE_SIZE, + MLX5_SEND_MAX_INLINE_LEN); + } + txq_ctrl->txq.inlen_send = inlen_send; + txq_ctrl->txq.inlen_mode = inlen_mode; + txq_ctrl->txq.inlen_empw = 0; + inlen_send = 0; + 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; } /** @@ -724,6 +915,8 @@ mlx5_txq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, 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); @@ -737,8 +930,6 @@ mlx5_txq_new(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc, rte_errno = ENOMEM; goto error; } - tmpl->txq.elts = - (struct rte_mbuf *(*)[1 << tmpl->txq.elts_n])(tmpl + 1); rte_atomic32_inc(&tmpl->refcnt); LIST_INSERT_HEAD(&priv->txqsctrl, tmpl, next); return tmpl;