--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright 2017 6WIND S.A.
+ * Copyright 2017 Mellanox
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of 6WIND S.A. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef MLX4_RXTX_H_
+#define MLX4_RXTX_H_
+
+#include <stdint.h>
+#include <sys/queue.h>
+
+/* Verbs headers do not support -pedantic. */
+#ifdef PEDANTIC
+#pragma GCC diagnostic ignored "-Wpedantic"
+#endif
+#include <infiniband/mlx4dv.h>
+#include <infiniband/verbs.h>
+#ifdef PEDANTIC
+#pragma GCC diagnostic error "-Wpedantic"
+#endif
+
+#include <rte_ethdev.h>
+#include <rte_mbuf.h>
+#include <rte_mempool.h>
+
+#include "mlx4.h"
+#include "mlx4_prm.h"
+
+/** Rx queue counters. */
+struct mlx4_rxq_stats {
+ unsigned int idx; /**< Mapping index. */
+ uint64_t ipackets; /**< Total of successfully received packets. */
+ uint64_t ibytes; /**< Total of successfully received bytes. */
+ uint64_t idropped; /**< Total of packets dropped when Rx ring full. */
+ uint64_t rx_nombuf; /**< Total of Rx mbuf allocation failures. */
+};
+
+/** Rx queue descriptor. */
+struct rxq {
+ struct priv *priv; /**< Back pointer to private data. */
+ struct rte_mempool *mp; /**< Memory pool for allocations. */
+ struct mlx4_mr *mr; /**< Memory region. */
+ struct ibv_cq *cq; /**< Completion queue. */
+ struct ibv_wq *wq; /**< Work queue. */
+ struct ibv_comp_channel *channel; /**< Rx completion channel. */
+ uint16_t rq_ci; /**< Saved RQ consumer index. */
+ uint16_t port_id; /**< Port ID for incoming packets. */
+ uint16_t sges_n; /**< Number of segments per packet (log2 value). */
+ uint16_t elts_n; /**< Mbuf queue size (log2 value). */
+ struct rte_mbuf *(*elts)[]; /**< Rx elements. */
+ volatile struct mlx4_wqe_data_seg (*wqes)[]; /**< HW queue entries. */
+ volatile uint32_t *rq_db; /**< RQ doorbell record. */
+ uint32_t csum:1; /**< Enable checksum offloading. */
+ uint32_t csum_l2tun:1; /**< Same for L2 tunnels. */
+ struct mlx4_cq mcq; /**< Info for directly manipulating the CQ. */
+ struct mlx4_rxq_stats stats; /**< Rx queue counters. */
+ unsigned int socket; /**< CPU socket ID for allocations. */
+ uint32_t usecnt; /**< Number of users relying on queue resources. */
+ uint8_t data[]; /**< Remaining queue resources. */
+};
+
+/** Shared flow target for Rx queues. */
+struct mlx4_rss {
+ LIST_ENTRY(mlx4_rss) next; /**< Next entry in list. */
+ struct priv *priv; /**< Back pointer to private data. */
+ uint32_t refcnt; /**< Reference count for this object. */
+ uint32_t usecnt; /**< Number of users relying on @p qp and @p ind. */
+ struct ibv_qp *qp; /**< Queue pair. */
+ struct ibv_rwq_ind_table *ind; /**< Indirection table. */
+ uint64_t fields; /**< Fields for RSS processing (Verbs format). */
+ uint8_t key[MLX4_RSS_HASH_KEY_SIZE]; /**< Hash key to use. */
+ uint16_t queues; /**< Number of target queues. */
+ uint16_t queue_id[]; /**< Target queues. */
+};
+
+/** Tx element. */
+struct txq_elt {
+ struct rte_mbuf *buf; /**< Buffer. */
+};
+
+/** Rx queue counters. */
+struct mlx4_txq_stats {
+ unsigned int idx; /**< Mapping index. */
+ uint64_t opackets; /**< Total of successfully sent packets. */
+ uint64_t obytes; /**< Total of successfully sent bytes. */
+ uint64_t odropped; /**< Total of packets not sent when Tx ring full. */
+};
+
+/** Tx queue descriptor. */
+struct txq {
+ struct mlx4_sq msq; /**< Info for directly manipulating the SQ. */
+ struct mlx4_cq mcq; /**< Info for directly manipulating the CQ. */
+ unsigned int elts_head; /**< Current index in (*elts)[]. */
+ unsigned int elts_tail; /**< First element awaiting completion. */
+ unsigned int elts_comp; /**< Number of packets awaiting completion. */
+ int elts_comp_cd; /**< Countdown for next completion. */
+ unsigned int elts_comp_cd_init; /**< Initial value for countdown. */
+ unsigned int elts_n; /**< (*elts)[] length. */
+ struct txq_elt (*elts)[]; /**< Tx elements. */
+ struct mlx4_txq_stats stats; /**< Tx queue counters. */
+ uint32_t max_inline; /**< Max inline send size. */
+ uint32_t csum:1; /**< Enable checksum offloading. */
+ uint32_t csum_l2tun:1; /**< Same for L2 tunnels. */
+ uint32_t lb:1; /**< Whether packets should be looped back by eSwitch. */
+ uint8_t *bounce_buf;
+ /**< Memory used for storing the first DWORD of data TXBBs. */
+ struct {
+ const struct rte_mempool *mp; /**< Cached memory pool. */
+ struct mlx4_mr *mr; /**< Memory region (for mp). */
+ uint32_t lkey; /**< mr->lkey copy. */
+ } mp2mr[MLX4_PMD_TX_MP_CACHE]; /**< MP to MR translation table. */
+ struct priv *priv; /**< Back pointer to private data. */
+ unsigned int socket; /**< CPU socket ID for allocations. */
+ struct ibv_cq *cq; /**< Completion queue. */
+ struct ibv_qp *qp; /**< Queue pair. */
+ uint8_t data[]; /**< Remaining queue resources. */
+};
+
+/* mlx4_rxq.c */
+
+uint8_t mlx4_rss_hash_key_default[MLX4_RSS_HASH_KEY_SIZE];
+int mlx4_rss_init(struct priv *priv);
+void mlx4_rss_deinit(struct priv *priv);
+struct mlx4_rss *mlx4_rss_get(struct priv *priv, uint64_t fields,
+ uint8_t key[MLX4_RSS_HASH_KEY_SIZE],
+ uint16_t queues, const uint16_t queue_id[]);
+void mlx4_rss_put(struct mlx4_rss *rss);
+int mlx4_rss_attach(struct mlx4_rss *rss);
+void mlx4_rss_detach(struct mlx4_rss *rss);
+int mlx4_rxq_attach(struct rxq *rxq);
+void mlx4_rxq_detach(struct rxq *rxq);
+int mlx4_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx,
+ uint16_t desc, unsigned int socket,
+ const struct rte_eth_rxconf *conf,
+ struct rte_mempool *mp);
+void mlx4_rx_queue_release(void *dpdk_rxq);
+
+/* mlx4_rxtx.c */
+
+uint16_t mlx4_tx_burst(void *dpdk_txq, struct rte_mbuf **pkts,
+ uint16_t pkts_n);
+uint16_t mlx4_rx_burst(void *dpdk_rxq, struct rte_mbuf **pkts,
+ uint16_t pkts_n);
+uint16_t mlx4_tx_burst_removed(void *dpdk_txq, struct rte_mbuf **pkts,
+ uint16_t pkts_n);
+uint16_t mlx4_rx_burst_removed(void *dpdk_rxq, struct rte_mbuf **pkts,
+ uint16_t pkts_n);
+
+/* mlx4_txq.c */
+
+int mlx4_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx,
+ uint16_t desc, unsigned int socket,
+ const struct rte_eth_txconf *conf);
+void mlx4_tx_queue_release(void *dpdk_txq);
+
+/**
+ * Get memory region (MR) <-> memory pool (MP) association from txq->mp2mr[].
+ * Call mlx4_txq_add_mr() if MP is not registered yet.
+ *
+ * @param txq
+ * Pointer to Tx queue structure.
+ * @param[in] mp
+ * Memory pool for which a memory region lkey must be returned.
+ *
+ * @return
+ * mr->lkey on success, (uint32_t)-1 on failure.
+ */
+static inline uint32_t
+mlx4_txq_mp2mr(struct txq *txq, struct rte_mempool *mp)
+{
+ unsigned int i;
+
+ for (i = 0; (i != RTE_DIM(txq->mp2mr)); ++i) {
+ if (unlikely(txq->mp2mr[i].mp == NULL)) {
+ /* Unknown MP, add a new MR for it. */
+ break;
+ }
+ if (txq->mp2mr[i].mp == mp) {
+ /* MP found MP. */
+ return txq->mp2mr[i].lkey;
+ }
+ }
+ return mlx4_txq_add_mr(txq, mp, i);
+}
+
+#endif /* MLX4_RXTX_H_ */
Code Review / deb_dpdk.git / blobdiff