a6bd4911ad
This patch removes the existing Tx datapath code as preparation step before introducing the new implementation. The following entities are being removed: - deprecated devargs support - tx_burst() routines - related PRM definitions - SQ configuration code - Tx routine selection code - incompatible Tx completion code The following devargs are deprecated and ignored: - "txq_inline" is going to be converted to "txq_inline_max" for compatibility issue - "tx_vec_en" - "txqs_max_vec" - "txq_mpw_hdr_dseg_en" - "txq_max_inline_len" is going to be converted to "txq_inline_mpw" for compatibility issue The deprecated devarg keys are recognized by PMD and ignored/converted to the new ones in order not to block device probing. Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com> Acked-by: Yongseok Koh <yskoh@mellanox.com>
584 lines
20 KiB
C
584 lines
20 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2015 6WIND S.A.
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* Copyright 2015 Mellanox Technologies, Ltd
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*/
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#ifndef RTE_PMD_MLX5_RXTX_H_
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#define RTE_PMD_MLX5_RXTX_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/queue.h>
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/* Verbs header. */
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/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
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#ifdef PEDANTIC
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#pragma GCC diagnostic ignored "-Wpedantic"
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#endif
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#include <infiniband/verbs.h>
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#include <infiniband/mlx5dv.h>
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#ifdef PEDANTIC
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#pragma GCC diagnostic error "-Wpedantic"
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#endif
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#include <rte_mbuf.h>
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#include <rte_mempool.h>
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#include <rte_common.h>
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#include <rte_hexdump.h>
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#include <rte_atomic.h>
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#include <rte_spinlock.h>
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#include <rte_io.h>
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#include <rte_bus_pci.h>
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#include "mlx5_utils.h"
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#include "mlx5.h"
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#include "mlx5_mr.h"
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#include "mlx5_autoconf.h"
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#include "mlx5_defs.h"
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#include "mlx5_prm.h"
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#include "mlx5_glue.h"
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/* Support tunnel matching. */
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#define MLX5_FLOW_TUNNEL 5
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struct mlx5_rxq_stats {
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#ifdef MLX5_PMD_SOFT_COUNTERS
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uint64_t ipackets; /**< Total of successfully received packets. */
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uint64_t ibytes; /**< Total of successfully received bytes. */
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#endif
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uint64_t idropped; /**< Total of packets dropped when RX ring full. */
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uint64_t rx_nombuf; /**< Total of RX mbuf allocation failures. */
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};
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struct mlx5_txq_stats {
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#ifdef MLX5_PMD_SOFT_COUNTERS
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uint64_t opackets; /**< Total of successfully sent packets. */
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uint64_t obytes; /**< Total of successfully sent bytes. */
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#endif
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uint64_t oerrors; /**< Total number of failed transmitted packets. */
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};
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struct mlx5_priv;
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/* Compressed CQE context. */
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struct rxq_zip {
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uint16_t ai; /* Array index. */
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uint16_t ca; /* Current array index. */
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uint16_t na; /* Next array index. */
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uint16_t cq_ci; /* The next CQE. */
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uint32_t cqe_cnt; /* Number of CQEs. */
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};
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/* Multi-Packet RQ buffer header. */
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struct mlx5_mprq_buf {
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struct rte_mempool *mp;
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rte_atomic16_t refcnt; /* Atomically accessed refcnt. */
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uint8_t pad[RTE_PKTMBUF_HEADROOM]; /* Headroom for the first packet. */
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} __rte_cache_aligned;
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/* Get pointer to the first stride. */
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#define mlx5_mprq_buf_addr(ptr) ((ptr) + 1)
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enum mlx5_rxq_err_state {
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MLX5_RXQ_ERR_STATE_NO_ERROR = 0,
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MLX5_RXQ_ERR_STATE_NEED_RESET,
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MLX5_RXQ_ERR_STATE_NEED_READY,
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};
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/* RX queue descriptor. */
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struct mlx5_rxq_data {
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unsigned int csum:1; /* Enable checksum offloading. */
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unsigned int hw_timestamp:1; /* Enable HW timestamp. */
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unsigned int vlan_strip:1; /* Enable VLAN stripping. */
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unsigned int crc_present:1; /* CRC must be subtracted. */
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unsigned int sges_n:2; /* Log 2 of SGEs (max buffers per packet). */
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unsigned int cqe_n:4; /* Log 2 of CQ elements. */
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unsigned int elts_n:4; /* Log 2 of Mbufs. */
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unsigned int rss_hash:1; /* RSS hash result is enabled. */
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unsigned int mark:1; /* Marked flow available on the queue. */
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unsigned int strd_num_n:5; /* Log 2 of the number of stride. */
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unsigned int strd_sz_n:4; /* Log 2 of stride size. */
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unsigned int strd_shift_en:1; /* Enable 2bytes shift on a stride. */
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unsigned int err_state:2; /* enum mlx5_rxq_err_state. */
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unsigned int :4; /* Remaining bits. */
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volatile uint32_t *rq_db;
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volatile uint32_t *cq_db;
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uint16_t port_id;
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uint32_t rq_ci;
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uint16_t consumed_strd; /* Number of consumed strides in WQE. */
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uint32_t rq_pi;
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uint32_t cq_ci;
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uint16_t rq_repl_thresh; /* Threshold for buffer replenishment. */
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union {
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struct rxq_zip zip; /* Compressed context. */
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uint16_t decompressed;
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/* Number of ready mbufs decompressed from the CQ. */
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};
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struct mlx5_mr_ctrl mr_ctrl; /* MR control descriptor. */
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uint16_t mprq_max_memcpy_len; /* Maximum size of packet to memcpy. */
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volatile void *wqes;
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volatile struct mlx5_cqe(*cqes)[];
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RTE_STD_C11
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union {
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struct rte_mbuf *(*elts)[];
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struct mlx5_mprq_buf *(*mprq_bufs)[];
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};
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struct rte_mempool *mp;
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struct rte_mempool *mprq_mp; /* Mempool for Multi-Packet RQ. */
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struct mlx5_mprq_buf *mprq_repl; /* Stashed mbuf for replenish. */
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uint16_t idx; /* Queue index. */
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struct mlx5_rxq_stats stats;
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uint64_t mbuf_initializer; /* Default rearm_data for vectorized Rx. */
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struct rte_mbuf fake_mbuf; /* elts padding for vectorized Rx. */
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void *cq_uar; /* CQ user access region. */
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uint32_t cqn; /* CQ number. */
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uint8_t cq_arm_sn; /* CQ arm seq number. */
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#ifndef RTE_ARCH_64
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rte_spinlock_t *uar_lock_cq;
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/* CQ (UAR) access lock required for 32bit implementations */
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#endif
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uint32_t tunnel; /* Tunnel information. */
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} __rte_cache_aligned;
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/* Verbs Rx queue elements. */
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struct mlx5_rxq_ibv {
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LIST_ENTRY(mlx5_rxq_ibv) next; /* Pointer to the next element. */
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rte_atomic32_t refcnt; /* Reference counter. */
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struct mlx5_rxq_ctrl *rxq_ctrl; /* Back pointer to parent. */
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struct ibv_cq *cq; /* Completion Queue. */
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struct ibv_wq *wq; /* Work Queue. */
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struct ibv_comp_channel *channel;
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};
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/* RX queue control descriptor. */
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struct mlx5_rxq_ctrl {
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struct mlx5_rxq_data rxq; /* Data path structure. */
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LIST_ENTRY(mlx5_rxq_ctrl) next; /* Pointer to the next element. */
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rte_atomic32_t refcnt; /* Reference counter. */
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struct mlx5_rxq_ibv *ibv; /* Verbs elements. */
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struct mlx5_priv *priv; /* Back pointer to private data. */
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unsigned int socket; /* CPU socket ID for allocations. */
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unsigned int irq:1; /* Whether IRQ is enabled. */
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uint32_t flow_mark_n; /* Number of Mark/Flag flows using this Queue. */
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uint32_t flow_tunnels_n[MLX5_FLOW_TUNNEL]; /* Tunnels counters. */
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uint32_t wqn; /* WQ number. */
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uint16_t dump_file_n; /* Number of dump files. */
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};
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/* Indirection table. */
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struct mlx5_ind_table_ibv {
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LIST_ENTRY(mlx5_ind_table_ibv) next; /* Pointer to the next element. */
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rte_atomic32_t refcnt; /* Reference counter. */
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struct ibv_rwq_ind_table *ind_table; /**< Indirection table. */
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uint32_t queues_n; /**< Number of queues in the list. */
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uint16_t queues[]; /**< Queue list. */
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};
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/* Hash Rx queue. */
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struct mlx5_hrxq {
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LIST_ENTRY(mlx5_hrxq) next; /* Pointer to the next element. */
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rte_atomic32_t refcnt; /* Reference counter. */
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struct mlx5_ind_table_ibv *ind_table; /* Indirection table. */
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struct ibv_qp *qp; /* Verbs queue pair. */
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#ifdef HAVE_IBV_FLOW_DV_SUPPORT
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void *action; /* DV QP action pointer. */
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#endif
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uint64_t hash_fields; /* Verbs Hash fields. */
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uint32_t rss_key_len; /* Hash key length in bytes. */
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uint8_t rss_key[]; /* Hash key. */
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};
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/* TX queue descriptor. */
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__extension__
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struct mlx5_txq_data {
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uint16_t elts_head; /* Current counter in (*elts)[]. */
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uint16_t elts_tail; /* Counter of first element awaiting completion. */
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uint16_t elts_comp; /* Counter since last completion request. */
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uint16_t mpw_comp; /* WQ index since last completion request. */
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uint16_t cq_ci; /* Consumer index for completion queue. */
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#ifndef NDEBUG
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uint16_t cq_pi; /* Producer index for completion queue. */
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#endif
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uint16_t wqe_ci; /* Consumer index for work queue. */
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uint16_t wqe_pi; /* Producer index for work queue. */
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uint16_t elts_n:4; /* (*elts)[] length (in log2). */
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uint16_t cqe_n:4; /* Number of CQ elements (in log2). */
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uint16_t wqe_n:4; /* Number of of WQ elements (in log2). */
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uint16_t tso_en:1; /* When set hardware TSO is enabled. */
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uint16_t tunnel_en:1;
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/* When set TX offload for tunneled packets are supported. */
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uint16_t swp_en:1; /* Whether SW parser is enabled. */
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uint16_t mpw_hdr_dseg:1; /* Enable DSEGs in the title WQEBB. */
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uint16_t max_inline; /* Multiple of RTE_CACHE_LINE_SIZE to inline. */
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uint16_t inline_max_packet_sz; /* Max packet size for inlining. */
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uint32_t qp_num_8s; /* QP number shifted by 8. */
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uint64_t offloads; /* Offloads for Tx Queue. */
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struct mlx5_mr_ctrl mr_ctrl; /* MR control descriptor. */
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volatile struct mlx5_cqe (*cqes)[]; /* Completion queue. */
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volatile void *wqes; /* Work queue (use volatile to write into). */
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volatile uint32_t *qp_db; /* Work queue doorbell. */
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volatile uint32_t *cq_db; /* Completion queue doorbell. */
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struct rte_mbuf *(*elts)[]; /* TX elements. */
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uint16_t port_id; /* Port ID of device. */
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uint16_t idx; /* Queue index. */
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struct mlx5_txq_stats stats; /* TX queue counters. */
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#ifndef RTE_ARCH_64
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rte_spinlock_t *uar_lock;
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/* UAR access lock required for 32bit implementations */
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#endif
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} __rte_cache_aligned;
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/* Verbs Rx queue elements. */
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struct mlx5_txq_ibv {
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LIST_ENTRY(mlx5_txq_ibv) next; /* Pointer to the next element. */
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rte_atomic32_t refcnt; /* Reference counter. */
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struct mlx5_txq_ctrl *txq_ctrl; /* Pointer to the control queue. */
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struct ibv_cq *cq; /* Completion Queue. */
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struct ibv_qp *qp; /* Queue Pair. */
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};
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/* TX queue control descriptor. */
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struct mlx5_txq_ctrl {
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struct mlx5_txq_data txq; /* Data path structure. */
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LIST_ENTRY(mlx5_txq_ctrl) next; /* Pointer to the next element. */
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rte_atomic32_t refcnt; /* Reference counter. */
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unsigned int socket; /* CPU socket ID for allocations. */
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unsigned int max_inline_data; /* Max inline data. */
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unsigned int max_tso_header; /* Max TSO header size. */
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struct mlx5_txq_ibv *ibv; /* Verbs queue object. */
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struct mlx5_priv *priv; /* Back pointer to private data. */
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off_t uar_mmap_offset; /* UAR mmap offset for non-primary process. */
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void *bf_reg; /* BlueFlame register from Verbs. */
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uint32_t cqn; /* CQ number. */
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uint16_t dump_file_n; /* Number of dump files. */
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};
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#define MLX5_TX_BFREG(txq) \
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(MLX5_PROC_PRIV((txq)->port_id)->uar_table[(txq)->idx])
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/* mlx5_rxq.c */
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extern uint8_t rss_hash_default_key[];
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int mlx5_check_mprq_support(struct rte_eth_dev *dev);
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int mlx5_rxq_mprq_enabled(struct mlx5_rxq_data *rxq);
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int mlx5_mprq_enabled(struct rte_eth_dev *dev);
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int mlx5_mprq_free_mp(struct rte_eth_dev *dev);
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int mlx5_mprq_alloc_mp(struct rte_eth_dev *dev);
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int mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
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unsigned int socket, const struct rte_eth_rxconf *conf,
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struct rte_mempool *mp);
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void mlx5_rx_queue_release(void *dpdk_rxq);
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int mlx5_rx_intr_vec_enable(struct rte_eth_dev *dev);
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void mlx5_rx_intr_vec_disable(struct rte_eth_dev *dev);
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int mlx5_rx_intr_enable(struct rte_eth_dev *dev, uint16_t rx_queue_id);
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int mlx5_rx_intr_disable(struct rte_eth_dev *dev, uint16_t rx_queue_id);
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struct mlx5_rxq_ibv *mlx5_rxq_ibv_new(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_rxq_ibv_verify(struct rte_eth_dev *dev);
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struct mlx5_rxq_ctrl *mlx5_rxq_new(struct rte_eth_dev *dev, uint16_t idx,
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uint16_t desc, unsigned int socket,
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const struct rte_eth_rxconf *conf,
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struct rte_mempool *mp);
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struct mlx5_rxq_ctrl *mlx5_rxq_get(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_rxq_release(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_rxq_verify(struct rte_eth_dev *dev);
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int rxq_alloc_elts(struct mlx5_rxq_ctrl *rxq_ctrl);
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int mlx5_ind_table_ibv_verify(struct rte_eth_dev *dev);
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struct mlx5_hrxq *mlx5_hrxq_new(struct rte_eth_dev *dev,
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const uint8_t *rss_key, uint32_t rss_key_len,
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uint64_t hash_fields,
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const uint16_t *queues, uint32_t queues_n,
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int tunnel __rte_unused);
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struct mlx5_hrxq *mlx5_hrxq_get(struct rte_eth_dev *dev,
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const uint8_t *rss_key, uint32_t rss_key_len,
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uint64_t hash_fields,
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const uint16_t *queues, uint32_t queues_n);
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int mlx5_hrxq_release(struct rte_eth_dev *dev, struct mlx5_hrxq *hxrq);
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int mlx5_hrxq_ibv_verify(struct rte_eth_dev *dev);
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struct mlx5_hrxq *mlx5_hrxq_drop_new(struct rte_eth_dev *dev);
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void mlx5_hrxq_drop_release(struct rte_eth_dev *dev);
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uint64_t mlx5_get_rx_port_offloads(void);
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uint64_t mlx5_get_rx_queue_offloads(struct rte_eth_dev *dev);
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/* mlx5_txq.c */
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int mlx5_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
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unsigned int socket, const struct rte_eth_txconf *conf);
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void mlx5_tx_queue_release(void *dpdk_txq);
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int mlx5_tx_uar_init_secondary(struct rte_eth_dev *dev, int fd);
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struct mlx5_txq_ibv *mlx5_txq_ibv_new(struct rte_eth_dev *dev, uint16_t idx);
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struct mlx5_txq_ibv *mlx5_txq_ibv_get(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_txq_ibv_release(struct mlx5_txq_ibv *txq_ibv);
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int mlx5_txq_ibv_verify(struct rte_eth_dev *dev);
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struct mlx5_txq_ctrl *mlx5_txq_new(struct rte_eth_dev *dev, uint16_t idx,
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uint16_t desc, unsigned int socket,
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const struct rte_eth_txconf *conf);
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struct mlx5_txq_ctrl *mlx5_txq_get(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_txq_release(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_txq_releasable(struct rte_eth_dev *dev, uint16_t idx);
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int mlx5_txq_verify(struct rte_eth_dev *dev);
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void txq_alloc_elts(struct mlx5_txq_ctrl *txq_ctrl);
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uint64_t mlx5_get_tx_port_offloads(struct rte_eth_dev *dev);
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/* mlx5_rxtx.c */
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extern uint32_t mlx5_ptype_table[];
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extern uint8_t mlx5_cksum_table[];
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extern uint8_t mlx5_swp_types_table[];
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void mlx5_set_ptype_table(void);
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void mlx5_set_cksum_table(void);
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void mlx5_set_swp_types_table(void);
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__rte_noinline uint16_t mlx5_tx_error_cqe_handle(struct mlx5_txq_data *txq,
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volatile struct mlx5_err_cqe *err_cqe);
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uint16_t mlx5_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts, uint16_t pkts_n);
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void mlx5_rxq_initialize(struct mlx5_rxq_data *rxq);
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__rte_noinline int mlx5_rx_err_handle(struct mlx5_rxq_data *rxq,
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uint8_t mbuf_prepare);
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void mlx5_mprq_buf_free_cb(void *addr, void *opaque);
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void mlx5_mprq_buf_free(struct mlx5_mprq_buf *buf);
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uint16_t mlx5_rx_burst_mprq(void *dpdk_rxq, struct rte_mbuf **pkts,
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uint16_t pkts_n);
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uint16_t removed_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts,
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uint16_t pkts_n);
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uint16_t removed_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts,
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uint16_t pkts_n);
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int mlx5_rx_descriptor_status(void *rx_queue, uint16_t offset);
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int mlx5_tx_descriptor_status(void *tx_queue, uint16_t offset);
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uint32_t mlx5_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id);
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void mlx5_dump_debug_information(const char *path, const char *title,
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const void *buf, unsigned int len);
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int mlx5_queue_state_modify_primary(struct rte_eth_dev *dev,
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const struct mlx5_mp_arg_queue_state_modify *sm);
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/* Vectorized version of mlx5_rxtx.c */
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int mlx5_rxq_check_vec_support(struct mlx5_rxq_data *rxq_data);
|
|
int mlx5_check_vec_rx_support(struct rte_eth_dev *dev);
|
|
uint16_t mlx5_rx_burst_vec(void *dpdk_txq, struct rte_mbuf **pkts,
|
|
uint16_t pkts_n);
|
|
|
|
/* mlx5_mr.c */
|
|
|
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void mlx5_mr_flush_local_cache(struct mlx5_mr_ctrl *mr_ctrl);
|
|
uint32_t mlx5_rx_addr2mr_bh(struct mlx5_rxq_data *rxq, uintptr_t addr);
|
|
uint32_t mlx5_tx_mb2mr_bh(struct mlx5_txq_data *txq, struct rte_mbuf *mb);
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|
uint32_t mlx5_tx_update_ext_mp(struct mlx5_txq_data *txq, uintptr_t addr,
|
|
struct rte_mempool *mp);
|
|
int mlx5_dma_map(struct rte_pci_device *pdev, void *addr, uint64_t iova,
|
|
size_t len);
|
|
int mlx5_dma_unmap(struct rte_pci_device *pdev, void *addr, uint64_t iova,
|
|
size_t len);
|
|
|
|
/**
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|
* Provide safe 64bit store operation to mlx5 UAR region for both 32bit and
|
|
* 64bit architectures.
|
|
*
|
|
* @param val
|
|
* value to write in CPU endian format.
|
|
* @param addr
|
|
* Address to write to.
|
|
* @param lock
|
|
* Address of the lock to use for that UAR access.
|
|
*/
|
|
static __rte_always_inline void
|
|
__mlx5_uar_write64_relaxed(uint64_t val, void *addr,
|
|
rte_spinlock_t *lock __rte_unused)
|
|
{
|
|
#ifdef RTE_ARCH_64
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|
*(uint64_t *)addr = val;
|
|
#else /* !RTE_ARCH_64 */
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|
rte_spinlock_lock(lock);
|
|
*(uint32_t *)addr = val;
|
|
rte_io_wmb();
|
|
*((uint32_t *)addr + 1) = val >> 32;
|
|
rte_spinlock_unlock(lock);
|
|
#endif
|
|
}
|
|
|
|
/**
|
|
* Provide safe 64bit store operation to mlx5 UAR region for both 32bit and
|
|
* 64bit architectures while guaranteeing the order of execution with the
|
|
* code being executed.
|
|
*
|
|
* @param val
|
|
* value to write in CPU endian format.
|
|
* @param addr
|
|
* Address to write to.
|
|
* @param lock
|
|
* Address of the lock to use for that UAR access.
|
|
*/
|
|
static __rte_always_inline void
|
|
__mlx5_uar_write64(uint64_t val, void *addr, rte_spinlock_t *lock)
|
|
{
|
|
rte_io_wmb();
|
|
__mlx5_uar_write64_relaxed(val, addr, lock);
|
|
}
|
|
|
|
/* Assist macros, used instead of directly calling the functions they wrap. */
|
|
#ifdef RTE_ARCH_64
|
|
#define mlx5_uar_write64_relaxed(val, dst, lock) \
|
|
__mlx5_uar_write64_relaxed(val, dst, NULL)
|
|
#define mlx5_uar_write64(val, dst, lock) __mlx5_uar_write64(val, dst, NULL)
|
|
#else
|
|
#define mlx5_uar_write64_relaxed(val, dst, lock) \
|
|
__mlx5_uar_write64_relaxed(val, dst, lock)
|
|
#define mlx5_uar_write64(val, dst, lock) __mlx5_uar_write64(val, dst, lock)
|
|
#endif
|
|
|
|
/* CQE status. */
|
|
enum mlx5_cqe_status {
|
|
MLX5_CQE_STATUS_SW_OWN,
|
|
MLX5_CQE_STATUS_HW_OWN,
|
|
MLX5_CQE_STATUS_ERR,
|
|
};
|
|
|
|
/**
|
|
* Check whether CQE is valid.
|
|
*
|
|
* @param cqe
|
|
* Pointer to CQE.
|
|
* @param cqes_n
|
|
* Size of completion queue.
|
|
* @param ci
|
|
* Consumer index.
|
|
*
|
|
* @return
|
|
* The CQE status.
|
|
*/
|
|
static __rte_always_inline enum mlx5_cqe_status
|
|
check_cqe(volatile struct mlx5_cqe *cqe, const uint16_t cqes_n,
|
|
const uint16_t ci)
|
|
{
|
|
const uint16_t idx = ci & cqes_n;
|
|
const uint8_t op_own = cqe->op_own;
|
|
const uint8_t op_owner = MLX5_CQE_OWNER(op_own);
|
|
const uint8_t op_code = MLX5_CQE_OPCODE(op_own);
|
|
|
|
if (unlikely((op_owner != (!!(idx))) || (op_code == MLX5_CQE_INVALID)))
|
|
return MLX5_CQE_STATUS_HW_OWN;
|
|
rte_cio_rmb();
|
|
if (unlikely(op_code == MLX5_CQE_RESP_ERR ||
|
|
op_code == MLX5_CQE_REQ_ERR))
|
|
return MLX5_CQE_STATUS_ERR;
|
|
return MLX5_CQE_STATUS_SW_OWN;
|
|
}
|
|
|
|
/**
|
|
* Get Memory Pool (MP) from mbuf. If mbuf is indirect, the pool from which the
|
|
* cloned mbuf is allocated is returned instead.
|
|
*
|
|
* @param buf
|
|
* Pointer to mbuf.
|
|
*
|
|
* @return
|
|
* Memory pool where data is located for given mbuf.
|
|
*/
|
|
static inline struct rte_mempool *
|
|
mlx5_mb2mp(struct rte_mbuf *buf)
|
|
{
|
|
if (unlikely(RTE_MBUF_CLONED(buf)))
|
|
return rte_mbuf_from_indirect(buf)->pool;
|
|
return buf->pool;
|
|
}
|
|
|
|
/**
|
|
* Query LKey from a packet buffer for Rx. No need to flush local caches for Rx
|
|
* as mempool is pre-configured and static.
|
|
*
|
|
* @param rxq
|
|
* Pointer to Rx queue structure.
|
|
* @param addr
|
|
* Address to search.
|
|
*
|
|
* @return
|
|
* Searched LKey on success, UINT32_MAX on no match.
|
|
*/
|
|
static __rte_always_inline uint32_t
|
|
mlx5_rx_addr2mr(struct mlx5_rxq_data *rxq, uintptr_t addr)
|
|
{
|
|
struct mlx5_mr_ctrl *mr_ctrl = &rxq->mr_ctrl;
|
|
uint32_t lkey;
|
|
|
|
/* Linear search on MR cache array. */
|
|
lkey = mlx5_mr_lookup_cache(mr_ctrl->cache, &mr_ctrl->mru,
|
|
MLX5_MR_CACHE_N, addr);
|
|
if (likely(lkey != UINT32_MAX))
|
|
return lkey;
|
|
/* Take slower bottom-half (Binary Search) on miss. */
|
|
return mlx5_rx_addr2mr_bh(rxq, addr);
|
|
}
|
|
|
|
#define mlx5_rx_mb2mr(rxq, mb) mlx5_rx_addr2mr(rxq, (uintptr_t)((mb)->buf_addr))
|
|
|
|
/**
|
|
* Query LKey from a packet buffer for Tx. If not found, add the mempool.
|
|
*
|
|
* @param txq
|
|
* Pointer to Tx queue structure.
|
|
* @param addr
|
|
* Address to search.
|
|
*
|
|
* @return
|
|
* Searched LKey on success, UINT32_MAX on no match.
|
|
*/
|
|
static __rte_always_inline uint32_t
|
|
mlx5_tx_mb2mr(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
|
|
{
|
|
struct mlx5_mr_ctrl *mr_ctrl = &txq->mr_ctrl;
|
|
uintptr_t addr = (uintptr_t)mb->buf_addr;
|
|
uint32_t lkey;
|
|
|
|
/* Check generation bit to see if there's any change on existing MRs. */
|
|
if (unlikely(*mr_ctrl->dev_gen_ptr != mr_ctrl->cur_gen))
|
|
mlx5_mr_flush_local_cache(mr_ctrl);
|
|
/* Linear search on MR cache array. */
|
|
lkey = mlx5_mr_lookup_cache(mr_ctrl->cache, &mr_ctrl->mru,
|
|
MLX5_MR_CACHE_N, addr);
|
|
if (likely(lkey != UINT32_MAX))
|
|
return lkey;
|
|
/* Take slower bottom-half on miss. */
|
|
return mlx5_tx_mb2mr_bh(txq, mb);
|
|
}
|
|
|
|
/**
|
|
* Ring TX queue doorbell and flush the update if requested.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
* @param wqe
|
|
* Pointer to the last WQE posted in the NIC.
|
|
* @param cond
|
|
* Request for write memory barrier after BlueFlame update.
|
|
*/
|
|
static __rte_always_inline void
|
|
mlx5_tx_dbrec_cond_wmb(struct mlx5_txq_data *txq, volatile struct mlx5_wqe *wqe,
|
|
int cond)
|
|
{
|
|
uint64_t *dst = MLX5_TX_BFREG(txq);
|
|
volatile uint64_t *src = ((volatile uint64_t *)wqe);
|
|
|
|
rte_cio_wmb();
|
|
*txq->qp_db = rte_cpu_to_be_32(txq->wqe_ci);
|
|
/* Ensure ordering between DB record and BF copy. */
|
|
rte_wmb();
|
|
mlx5_uar_write64_relaxed(*src, dst, txq->uar_lock);
|
|
if (cond)
|
|
rte_wmb();
|
|
}
|
|
|
|
/**
|
|
* Ring TX queue doorbell and flush the update by write memory barrier.
|
|
*
|
|
* @param txq
|
|
* Pointer to TX queue structure.
|
|
* @param wqe
|
|
* Pointer to the last WQE posted in the NIC.
|
|
*/
|
|
static __rte_always_inline void
|
|
mlx5_tx_dbrec(struct mlx5_txq_data *txq, volatile struct mlx5_wqe *wqe)
|
|
{
|
|
mlx5_tx_dbrec_cond_wmb(txq, wqe, 1);
|
|
}
|
|
|
|
#endif /* RTE_PMD_MLX5_RXTX_H_ */
|