From 40100bfe34dae9a1a03fcd9e8137c4b5348574f9 Mon Sep 17 00:00:00 2001
From: Olga Shern <olgas@mellanox.com>
Date: Mon, 23 Nov 2015 15:44:40 +0100
Subject: [PATCH] mlx4: fix local protection error when Tx MP to MR cache is
full
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 --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
index 4bd0ecd560..3e05373b5e 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])));
}
--
2.39.5