[dpdk-dev,05/14] mlx4: fix local protection error when TX MP to MR cache is full
Commit Message
From: Olga Shern <olgas@mellanox.com>
When MP to MR cache is full, the last (newest) MR is freed instead of the
first (oldest) one, causing local protection errors during TX.
Fixes: 7fae69eeff13 ("mlx4: new poll mode driver")
Signed-off-by: Olga Shern <olgas@mellanox.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
drivers/net/mlx4/mlx4.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
@@ -1049,7 +1049,7 @@ txq_mp2mr(struct txq *txq, const struct rte_mempool *mp)
DEBUG("%p: MR <-> MP table full, dropping oldest entry.",
(void *)txq);
--i;
- claim_zero(ibv_dereg_mr(txq->mp2mr[i].mr));
+ claim_zero(ibv_dereg_mr(txq->mp2mr[0].mr));
memmove(&txq->mp2mr[0], &txq->mp2mr[1],
(sizeof(txq->mp2mr) - sizeof(txq->mp2mr[0])));
}