From: Shahaf Shuler <shahafs@mellanox.com>
Date: Thu, 25 Jan 2018 16:18:03 +0000 (+0200)
Subject: net/mlx5: fix memory region boundary checks
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=25f28d9d294d00a1c539d47a13c14ce282e31b09;p=dpdk.git

net/mlx5: fix memory region boundary checks

Since commit f81ec748434b ("net/mlx5: fix memory region lookup") the
Memory Region (MR) are no longer overlaps.

Comparing the end address of the MR should be exclusive, otherwise two
contiguous MRs may cause wrong matching.

Fixes: f81ec748434b ("net/mlx5: fix memory region lookup")
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>
---

diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 7297f011a9..6d1bc85e6e 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -552,7 +552,7 @@ mlx5_tx_mb2mr(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
 	struct mlx5_mr *mr;
 
 	assert(i < RTE_DIM(txq->mp2mr));
-	if (likely(txq->mp2mr[i]->start <= addr && txq->mp2mr[i]->end >= addr))
+	if (likely(txq->mp2mr[i]->start <= addr && txq->mp2mr[i]->end > addr))
 		return txq->mp2mr[i]->lkey;
 	for (i = 0; (i != RTE_DIM(txq->mp2mr)); ++i) {
 		if (unlikely(txq->mp2mr[i] == NULL ||
@@ -561,7 +561,7 @@ mlx5_tx_mb2mr(struct mlx5_txq_data *txq, struct rte_mbuf *mb)
 			break;
 		}
 		if (txq->mp2mr[i]->start <= addr &&
-		    txq->mp2mr[i]->end >= addr) {
+		    txq->mp2mr[i]->end > addr) {
 			assert(txq->mp2mr[i]->lkey != (uint32_t)-1);
 			txq->mr_cache_idx = i;
 			return txq->mp2mr[i]->lkey;