diff mbox series

[net,2/3] net: hns3: reallocate SSU' buffer size when pfc_en changes

Message ID 1573698761-25682-3-git-send-email-tanhuazhong@huawei.com
State Accepted
Delegated to: David Miller
Headers show
Series net: hns3: fixes for -net | expand

Commit Message

tanhuazhong Nov. 14, 2019, 2:32 a.m. UTC 
From: Yunsheng Lin <linyunsheng@huawei.com>

When a TC's PFC is disabled or enabled, the RX private buffer for
this TC need to be changed too, otherwise this may cause packet
dropped problem.

This patch fixes it by calling hclge_buffer_alloc to reallocate
buffer when pfc_en changes.

Fixes: cacde272dd00 ("net: hns3: Add hclge_dcb module for the support of DCB feature")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
 drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
index c063301..8b42cae 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_dcb.c
@@ -318,6 +318,7 @@  static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
 	struct net_device *netdev = h->kinfo.netdev;
 	struct hclge_dev *hdev = vport->back;
 	u8 i, j, pfc_map, *prio_tc;
+	int ret;
 
 	if (!(hdev->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
 	    hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE)
@@ -347,7 +348,21 @@  static int hclge_ieee_setpfc(struct hnae3_handle *h, struct ieee_pfc *pfc)
 
 	hclge_tm_pfc_info_update(hdev);
 
-	return hclge_pause_setup_hw(hdev, false);
+	ret = hclge_pause_setup_hw(hdev, false);
+	if (ret)
+		return ret;
+
+	ret = hclge_notify_client(hdev, HNAE3_DOWN_CLIENT);
+	if (ret)
+		return ret;
+
+	ret = hclge_buffer_alloc(hdev);
+	if (ret) {
+		hclge_notify_client(hdev, HNAE3_UP_CLIENT);
+		return ret;
+	}
+
+	return hclge_notify_client(hdev, HNAE3_UP_CLIENT);
 }
 
 /* DCBX configuration */