[dpdk-stable] [PATCH 19.11.9 3/3] net/hns3: fix handling link update

["Min Hu (Connor)" <humin29@huawei.com>]

From: Chengwen Feng <fengchengwen@huawei.com>

[ upstream commit fae9b062b01397339c02c88ebee11dd5f7af3e3c ]

The link fails code should be parsed using the structure
hns3_mbx_vf_to_pf_cmd, else it will parse fail.

Fixes: 109e4dd1bd7a ("net/hns3: get link state change through 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 | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/net/hns3/hns3_mbx.c b/drivers/net/hns3/hns3_mbx.c
index 896ad25..d44a4d1 100644
--- a/drivers/net/hns3/hns3_mbx.c
+++ b/drivers/net/hns3/hns3_mbx.c
@@ -315,8 +315,8 @@ hns3_link_fail_parse(struct hns3_hw *hw, uint8_t link_fail_code)
 }
 
 static void
-hns3_handle_link_change_event(struct hns3_hw *hw,
-			      struct hns3_mbx_pf_to_vf_cmd *req)
+hns3pf_handle_link_change_event(struct hns3_hw *hw,
+				struct hns3_mbx_vf_to_pf_cmd *req)
 {
 #define LINK_STATUS_OFFSET     1
 #define LINK_FAIL_CODE_OFFSET  2
@@ -455,7 +455,14 @@ hns3_dev_handle_mbx_msg(struct hns3_hw *hw)
 			hns3_mbx_handler(hw);
 			break;
 		case HNS3_MBX_PUSH_LINK_STATUS:
-			hns3_handle_link_change_event(hw, req);
+			/*
+			 * This message is reported by the firmware and is
+			 * reported in 'struct hns3_mbx_vf_to_pf_cmd' format.
+			 * Therefore, we should cast the req variable to
+			 * 'struct hns3_mbx_vf_to_pf_cmd' and then process it.
+			 */
+			hns3pf_handle_link_change_event(hw,
+				(struct hns3_mbx_vf_to_pf_cmd *)req);
 			break;
 		default:
 			hns3_err(hw, "received unsupported(%d) mbx msg",
-- 
2.7.4