+#define MLX4_TX_BFREG(txq) \
+ (MLX4_PROC_PRIV((txq)->port_id)->uar_table[(txq)->stats.idx])
+
+/* mlx4_rxq.c */
+
+extern uint8_t mlx4_rss_hash_key_default[MLX4_RSS_HASH_KEY_SIZE];
+int mlx4_rss_init(struct mlx4_priv *priv);
+void mlx4_rss_deinit(struct mlx4_priv *priv);
+struct mlx4_rss *mlx4_rss_get(struct mlx4_priv *priv, uint64_t fields,
+ const 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);
+uint64_t mlx4_get_rx_port_offloads(struct mlx4_priv *priv);
+uint64_t mlx4_get_rx_queue_offloads(struct mlx4_priv *priv);
+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_uar_init_secondary(struct rte_eth_dev *dev, int fd);
+uint64_t mlx4_get_tx_port_offloads(struct mlx4_priv *priv);
+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);
+
+/* mlx4_mr.c */
+
+void mlx4_mr_flush_local_cache(struct mlx4_mr_ctrl *mr_ctrl);
+uint32_t mlx4_rx_addr2mr_bh(struct rxq *rxq, uintptr_t addr);
+uint32_t mlx4_tx_mb2mr_bh(struct txq *txq, struct rte_mbuf *mb);
+uint32_t mlx4_tx_update_ext_mp(struct txq *txq, uintptr_t addr,
+ struct rte_mempool *mp);
+
+/**
+ * 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 *
+mlx4_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
+mlx4_rx_addr2mr(struct rxq *rxq, uintptr_t addr)
+{
+ struct mlx4_mr_ctrl *mr_ctrl = &rxq->mr_ctrl;
+ uint32_t lkey;
+
+ /* Linear search on MR cache array. */
+ lkey = mlx4_mr_lookup_cache(mr_ctrl->cache, &mr_ctrl->mru,
+ MLX4_MR_CACHE_N, addr);
+ if (likely(lkey != UINT32_MAX))
+ return lkey;
+ /* Take slower bottom-half (Binary Search) on miss. */
+ return mlx4_rx_addr2mr_bh(rxq, addr);
+}
+
+#define mlx4_rx_mb2mr(rxq, mb) mlx4_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
+mlx4_tx_mb2mr(struct txq *txq, struct rte_mbuf *mb)
+{
+ struct mlx4_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))
+ mlx4_mr_flush_local_cache(mr_ctrl);
+ /* Linear search on MR cache array. */
+ lkey = mlx4_mr_lookup_cache(mr_ctrl->cache, &mr_ctrl->mru,
+ MLX4_MR_CACHE_N, addr);
+ if (likely(lkey != UINT32_MAX))
+ return lkey;
+ /* Take slower bottom-half on miss. */
+ return mlx4_tx_mb2mr_bh(txq, mb);
+}
+