3d555728c9
Except for a minor documentation update on internal structure definitions to make them more Doxygen-friendly, there is no impact on functionality. Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
123 lines
4.6 KiB
C
123 lines
4.6 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2017 6WIND S.A.
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* Copyright 2017 Mellanox
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef MLX4_RXTX_H_
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#define MLX4_RXTX_H_
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#include <stdint.h>
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/* Verbs headers do not support -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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#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 "mlx4.h"
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/** Rx queue counters. */
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struct mlx4_rxq_stats {
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unsigned int idx; /**< Mapping index. */
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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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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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/** Rx element. */
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struct rxq_elt {
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struct ibv_recv_wr wr; /**< Work request. */
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struct ibv_sge sge; /**< Scatter/gather element. */
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struct rte_mbuf *buf; /**< Buffer. */
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};
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/** Rx queue descriptor. */
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struct rxq {
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struct priv *priv; /**< Back pointer to private data. */
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struct rte_mempool *mp; /**< Memory pool for allocations. */
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struct ibv_mr *mr; /**< Memory region (for mp). */
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struct ibv_cq *cq; /**< Completion queue. */
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struct ibv_qp *qp; /**< Queue pair. */
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struct ibv_comp_channel *channel; /**< Rx completion channel. */
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unsigned int port_id; /**< Port ID for incoming packets. */
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unsigned int elts_n; /**< (*elts)[] length. */
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unsigned int elts_head; /**< Current index in (*elts)[]. */
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struct rxq_elt (*elts)[]; /**< Rx elements. */
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struct mlx4_rxq_stats stats; /**< Rx queue counters. */
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unsigned int socket; /**< CPU socket ID for allocations. */
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};
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/** Tx element. */
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struct txq_elt {
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struct ibv_send_wr wr; /* Work request. */
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struct ibv_sge sge; /* Scatter/gather element. */
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struct rte_mbuf *buf; /**< Buffer. */
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};
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/** Rx queue counters. */
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struct mlx4_txq_stats {
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unsigned int idx; /**< Mapping index. */
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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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uint64_t odropped; /**< Total of packets not sent when Tx ring full. */
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};
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/** Tx queue descriptor. */
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struct txq {
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struct priv *priv; /**< Back pointer to private data. */
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struct {
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const struct rte_mempool *mp; /**< Cached memory pool. */
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struct ibv_mr *mr; /**< Memory region (for mp). */
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uint32_t lkey; /**< mr->lkey copy. */
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} mp2mr[MLX4_PMD_TX_MP_CACHE]; /**< MP to MR translation table. */
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struct ibv_cq *cq; /**< Completion queue. */
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struct ibv_qp *qp; /**< Queue pair. */
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uint32_t max_inline; /**< Max inline send size. */
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unsigned int elts_n; /**< (*elts)[] length. */
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struct txq_elt (*elts)[]; /**< Tx elements. */
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unsigned int elts_head; /**< Current index in (*elts)[]. */
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unsigned int elts_tail; /**< First element awaiting completion. */
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unsigned int elts_comp; /**< Number of completion requests. */
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unsigned int elts_comp_cd; /**< Countdown for next completion. */
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unsigned int elts_comp_cd_init; /**< Initial value for countdown. */
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struct mlx4_txq_stats stats; /**< Tx queue counters. */
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unsigned int socket; /**< CPU socket ID for allocations. */
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};
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#endif /* MLX4_RXTX_H_ */
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