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From: "Min Hu (Connor)" <humin29@huawei.com>
To: <dev@dpdk.org>
Cc: <ferruh.yigit@intel.com>
Subject: [dpdk-dev] [PATCH 07/10] net/hns3: fix VF mailbox head field wrong update
Date: Wed, 31 Mar 2021 18:01:41 +0800
Message-ID: <1617184904-55349-8-git-send-email-humin29@huawei.com> (raw)
In-Reply-To: <1617184904-55349-1-git-send-email-humin29@huawei.com>

From: Chengwen Feng <fengchengwen@huawei.com>

Currently, the VF mailbox synchronization communication is based on
three fields: head/tail/lost, when head equals tail plus lost, it
means the response is received successfully.

The head field indicates the number of requests that are successfully
sent. If the request sending fails, it should not be updated.

This patch fix the above bug by roll back updates when the sending
fails.

Fixes: 463e748964f57 ("net/hns3: support mailbox")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/hns3/hns3_mbx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/hns3/hns3_mbx.c b/drivers/net/hns3/hns3_mbx.c
index ad0b4e6..3ba65f1 100644
--- a/drivers/net/hns3/hns3_mbx.c
+++ b/drivers/net/hns3/hns3_mbx.c
@@ -142,6 +142,7 @@ hns3_send_mbx_msg(struct hns3_hw *hw, uint16_t code, uint16_t subcode,
 		hw->mbx_resp.head++;
 		ret = hns3_cmd_send(hw, &desc, 1);
 		if (ret) {
+			hw->mbx_resp.head--;
 			rte_spinlock_unlock(&hw->mbx_resp.lock);
 			hns3_err(hw, "VF failed(=%d) to send mbx message to PF",
 				 ret);
-- 
2.7.4


  parent reply	other threads:[~2021-03-31 10:01 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31 10:01 [dpdk-dev] [PATCH 00/10] some bugfixes for hns3 PMD Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 01/10] net/hns3: fix some function names for copper media type Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 02/10] net/hns3: fix set default MAC addr fail in bonding of VF Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 03/10] net/hns3: fix the FLR miss detection Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 04/10] net/hns3: fix lack of rollback after setting PVID failed Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 05/10] net/hns3: fix flow control exception Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 06/10] net/hns3: fix flow counter not cleared when create Min Hu (Connor)
2021-03-31 10:01 ` Min Hu (Connor) [this message]
2021-03-31 10:01 ` [dpdk-dev] [PATCH 08/10] net/hns3: support get device version when dump register Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 09/10] net/hns3: delete redundant blank line Min Hu (Connor)
2021-03-31 10:01 ` [dpdk-dev] [PATCH 10/10] net/hns3: fix code style static warning Min Hu (Connor)
2021-04-08 17:02 ` [dpdk-dev] [PATCH 00/10] some bugfixes for hns3 PMD Ferruh Yigit

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