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From: Jiawei Zhu <17826875952@163.com>
To: dev@dpdk.org
Cc: zhujiawei12@huawei.com, matan@nvidia.com, shahafs@nvidia.com,
	viacheslavo@nvidia.com, Jiawei Zhu <17826875952@163.com>,
	stable@dpdk.org
Subject: [dpdk-dev] [PATCH] net/mlx5: fix wrong segmented packet in Rx
Date: Mon, 15 Feb 2021 05:15:14 -0500	[thread overview]
Message-ID: <1613384114-17855-1-git-send-email-17826875952@163.com> (raw)

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@dpdk.org

Signed-off-by: Jiawei Zhu <17826875952@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



             reply	other threads:[~2021-02-15 11:59 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-15 10:15 Jiawei Zhu [this message]
2021-02-24 13:20 ` Slava Ovsiienko
2021-02-26 16:11   ` Jiawei Zhu
2021-03-01  9:13     ` Slava Ovsiienko
2021-03-01 17:01       ` Jiawei Zhu
2021-03-02  8:10         ` Slava Ovsiienko
2021-03-02 16:44           ` Jiawei Zhu
2021-03-01 16:58 ` [dpdk-dev] [PATCH v2] " Jiawei Zhu
2021-03-01 17:19   ` [dpdk-dev] [PATCH v3] " Jiawei Zhu
2021-03-02 17:18     ` Slava Ovsiienko
2021-03-04  9:00     ` Raslan Darawsheh
2021-03-13 19:45       ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon

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