net/sfc: start to factor out multi-process shared data

[dpdk.git] / drivers / net / mlx5 / mlx5_mr.c

diff --git a/drivers/net/mlx5/mlx5_mr.c b/drivers/net/mlx5/mlx5_mr.c
index 6d7653d..442b2d2 100644 (file)
--- a/drivers/net/mlx5/mlx5_mr.c
+++ b/drivers/net/mlx5/mlx5_mr.c
@@ -1045,7 +1045,7 @@ mlx5_rx_addr2mr_bh(struct mlx5_rxq_data *rxq, uintptr_t addr)
  * @return
  *   Searched LKey on success, UINT32_MAX on no match.
  */
-uint32_t
+static uint32_t
 mlx5_tx_addr2mr_bh(struct mlx5_txq_data *txq, uintptr_t addr)
 {
        struct mlx5_txq_ctrl *txq_ctrl =
@@ -1059,6 +1059,32 @@ mlx5_tx_addr2mr_bh(struct mlx5_txq_data *txq, uintptr_t addr)
        return mlx5_mr_addr2mr_bh(ETH_DEV(priv), mr_ctrl, addr);
 }
 
+/**
+ * Bottom-half of LKey search on Tx. If it can't be searched in the memseg
+ * list, register the mempool of the mbuf as externally allocated memory.
+ *
+ * @param txq
+ *   Pointer to Tx queue structure.
+ * @param mb
+ *   Pointer to mbuf.
+ *
+ * @return
+ *   Searched LKey on success, UINT32_MAX on no match.
+ */
+uint32_t
+mlx5_tx_mb2mr_bh(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
+{
+       uintptr_t addr = (uintptr_t)mb->buf_addr;
+       uint32_t lkey;
+
+       lkey = mlx5_tx_addr2mr_bh(txq, addr);
+       if (lkey == UINT32_MAX && rte_errno == ENXIO) {
+               /* Mempool may have externally allocated memory. */
+               return mlx5_tx_update_ext_mp(txq, addr, mlx5_mb2mp(mb));
+       }
+       return lkey;
+}
+
 /**
  * Flush all of the local cache entries.
  *