diff mbox

[dpdk-dev,05/14] mlx4: fix local protection error when TX MP to MR cache is full

Message ID 1448289889-9590-6-git-send-email-adrien.mazarguil@6wind.com (mailing list archive)
State Accepted, archived
Headers

Commit Message

Adrien Mazarguil Nov. 23, 2015, 2:44 p.m. UTC 
  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(-)
diff mbox

Patch

diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 4bd0ecd..3e05373 100644
--- a/drivers/net/mlx4/mlx4.c
+++ b/drivers/net/mlx4/mlx4.c
@@ -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])));
 	}