|
 |
c7ffa4 |
From 95086c654322861a10f9835233a333d7c2188df3 Mon Sep 17 00:00:00 2001
|
|
|
c7ffa4 |
From: Shahaf Shuler <shahafs@mellanox.com>
|
|
|
c7ffa4 |
Date: Thu, 25 Jan 2018 18:17:58 +0200
|
|
|
c7ffa4 |
Subject: [PATCH] net/mlx5: fix memory region cache lookup
|
|
|
c7ffa4 |
|
|
|
c7ffa4 |
The Memory Region (MR) cache contains pointers to mlx5_mr.
|
|
|
c7ffa4 |
The MR cache indexes are filled when a new MR is created. As it is
|
|
|
c7ffa4 |
possible for MR to be created on the flight, an extra validation must be
|
|
|
c7ffa4 |
added to avoid segmentation fault.
|
|
|
c7ffa4 |
|
|
|
c7ffa4 |
Fixes: b0b093845793 ("net/mlx5: use buffer address for LKEY search")
|
|
|
c7ffa4 |
Cc: stable@dpdk.org
|
|
|
c7ffa4 |
|
|
|
c7ffa4 |
Signed-off-by: Xueming Li <xuemingl@mellanox.com>
|
|
|
c7ffa4 |
Signed-off-by: Shahaf Shuler <shahafs@mellanox.com>
|
|
|
c7ffa4 |
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
|
|
|
c7ffa4 |
---
|
|
|
c7ffa4 |
drivers/net/mlx5/mlx5_rxtx.h | 3 ++-
|
|
|
c7ffa4 |
1 file changed, 2 insertions(+), 1 deletion(-)
|
|
|
c7ffa4 |
|
|
|
c7ffa4 |
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
|
|
|
c7ffa4 |
index 9d9844365..f92eb33fb 100644
|
|
|
c7ffa4 |
--- a/drivers/net/mlx5/mlx5_rxtx.h
|
|
|
c7ffa4 |
+++ b/drivers/net/mlx5/mlx5_rxtx.h
|
|
|
c7ffa4 |
@@ -555,7 +555,8 @@ mlx5_tx_mb2mr(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
|
|
|
c7ffa4 |
if (likely(txq->mp2mr[i]->start <= addr && txq->mp2mr[i]->end >= addr))
|
|
|
c7ffa4 |
return txq->mp2mr[i]->lkey;
|
|
|
c7ffa4 |
for (i = 0; (i != RTE_DIM(txq->mp2mr)); ++i) {
|
|
|
c7ffa4 |
- if (unlikely(txq->mp2mr[i]->mr == NULL)) {
|
|
|
c7ffa4 |
+ if (unlikely(txq->mp2mr[i] == NULL ||
|
|
|
c7ffa4 |
+ txq->mp2mr[i]->mr == NULL)) {
|
|
|
c7ffa4 |
/* Unknown MP, add a new MR for it. */
|
|
|
c7ffa4 |
break;
|
|
|
c7ffa4 |
}
|
|
|
c7ffa4 |
--
|
|
|
c7ffa4 |
2.14.3
|
|
|
c7ffa4 |
|