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net/mlx5: fix memory region cache last index

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In case Memory Region cache is full, the new mempool will be
inserted in the last index of the array.

Update the last entry being hit to reflect it.

Fixes: b0b093845793 ("net/mlx5: use buffer address for LKEY search")
Cc: stable@dpdk.org

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
This commit is contained in:
Shahaf Shuler 2018-01-25 18:18:02 +02:00 committed by Ferruh Yigit
parent bb6883120a
commit 627cbfad1c
1 changed files with 1 additions and 1 deletions
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2
drivers/net/mlx5/mlx5_rxtx.h
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@ -567,7 +567,6 @@ mlx5_tx_mb2mr(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
return txq->mp2mr[i]->lkey;
}
}
txq->mr_cache_idx = 0;
mr = mlx5_txq_mp2mr_reg(txq, mlx5_tx_mb2mp(mb), i);
/*
* Request the reference to use in this queue, the original one is
@ -575,6 +574,7 @@ mlx5_tx_mb2mr(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
*/
if (mr) {
rte_atomic32_inc(&mr->refcnt);
txq->mr_cache_idx = i >= RTE_DIM(txq->mp2mr) ? i - 1 : i;
return mr->lkey;
} else {
struct rte_mempool *mp = mlx5_tx_mb2mp(mb);