[dpdk-dev] [PATCH 5/6] net/hns3: fix DCB cannot be reconfigured

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

From: Huisong Li <lihuisong@huawei.com>

Whether the enable bit of the pfc ("pfc_en") is changed is one of the
conditions for reconfiguring the DCB. Currently, pfc_en is not rolled back
when DCB configuration fails. This patch fixes it.

Fixes: 62e3ccc2b94c ("net/hns3: support flow control")
Cc: stable@dpdk.org

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 drivers/net/hns3/hns3_dcb.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/hns3/hns3_dcb.c b/drivers/net/hns3/hns3_dcb.c
index 1cb6adb..90c0d04 100644
--- a/drivers/net/hns3/hns3_dcb.c
+++ b/drivers/net/hns3/hns3_dcb.c
@@ -1543,6 +1543,7 @@ hns3_dcb_hw_configure(struct hns3_adapter *hns)
 	enum hns3_fc_status fc_status = hw->current_fc_status;
 	enum hns3_fc_mode requested_fc_mode = hw->requested_fc_mode;
 	uint8_t hw_pfc_map = hw->dcb_info.hw_pfc_map;
+	uint8_t pfc_en = hw->dcb_info.pfc_en;
 	int ret;
 
 	if (pf->tx_sch_mode != HNS3_FLAG_TC_BASE_SCH_MODE &&
@@ -1596,6 +1597,7 @@ hns3_dcb_hw_configure(struct hns3_adapter *hns)
 	hw->current_fc_status = fc_status;
 
 buffer_alloc_fail:
+	hw->dcb_info.pfc_en = pfc_en;
 	hw->dcb_info.hw_pfc_map = hw_pfc_map;
 
 	return ret;
-- 
2.7.4