[dpdk-stable] [PATCH] net/mlx5: fix wrong segmented packet in Rx
Jiawei Zhu
17826875952 at 163.com
Mon Feb 15 11:15:14 CET 2021
Fixed issue could occur when Mbuf starvation happens
in a middle of reception of a segmented packet.
In such a situation, after release the segments of that
packet, it does not align consumer index to the next stride.
This would cause receive a wrong segmented packet.
Fixes: 15a756b63734 ("net/mlx5: fix possible NULL dereference in Rx path")
Cc: stable at dpdk.org
Signed-off-by: Jiawei Zhu <17826875952 at 163.com>
---
drivers/net/mlx5/mlx5_rxtx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 2e4b87c..e3ce9fd 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1480,6 +1480,9 @@ enum mlx5_txcmp_code {
rte_mbuf_raw_free(pkt);
pkt = rep;
}
+ rq_ci >>= sges_n;
+ ++rq_ci;
+ rq_ci <<= sges_n;
break;
}
if (!pkt) {
--
1.8.3.1
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