#include "mlx4.h"
#include "mlx4_prm.h"
+#include "mlx4_mr.h"
/** Rx queue counters. */
struct mlx4_rxq_stats {
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 mlx4_mr_ctrl mr_ctrl; /* MR control descriptor. */
struct rte_mbuf *(*elts)[]; /**< Rx elements. */
volatile struct mlx4_wqe_data_seg (*wqes)[]; /**< HW queue entries. */
volatile uint32_t *rq_db; /**< RQ doorbell record. */
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 mlx4_mr_ctrl mr_ctrl; /* MR control descriptor. */
struct txq_elt (*elts)[]; /**< Tx elements. */
struct mlx4_txq_stats stats; /**< Tx queue counters. */
uint32_t max_inline; /**< Max inline send size. */
const struct rte_eth_txconf *conf);
void mlx4_tx_queue_release(void *dpdk_txq);
-static inline uint32_t
-mlx4_txq_mp2mr(struct txq *txq, struct rte_mempool *mp)
+/* 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_addr2mr_bh(struct txq *txq, uintptr_t addr);
+
+/**
+ * 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_addr2mr(struct txq *txq, uintptr_t addr)
{
- (void)txq;
- (void)mp;
- return UINT32_MAX;
+ struct mlx4_mr_ctrl *mr_ctrl = &txq->mr_ctrl;
+ 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 (binary search) on miss. */
+ return mlx4_tx_addr2mr_bh(txq, addr);
}
+#define mlx4_tx_mb2mr(rxq, mb) mlx4_tx_addr2mr(rxq, (uintptr_t)((mb)->buf_addr))
+
#endif /* MLX4_RXTX_H_ */