net: hns3: Disable vf vlan filter when vf vlan table is full

This is only 128 entries for hardware's vf vlan table, when
the vf table is full, the firmware will disable the vf vlan
filter and return a resp_code of HCLGE_VF_VLAN_NO_ENTRY to
driver.

This patch checks the if resp_code from firmware is
HCLGE_VF_VLAN_NO_ENTRY, if yes, then print a warning and
return ok to the caller.

Fixes: 46a3df9 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support")
Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -4525,9 +4525,16 @@ static int hclge_set_vf_vlan_common(struct hclge_dev *hdev, int vfid,
 	}
 
 	if (!is_kill) {
+#define HCLGE_VF_VLAN_NO_ENTRY	2
 		if (!req0->resp_code || req0->resp_code == 1)
 			return 0;
 
+		if (req0->resp_code == HCLGE_VF_VLAN_NO_ENTRY) {
+			dev_warn(&hdev->pdev->dev,
+				 "vf vlan table is full, vf vlan filter is disabled\n");
+			return 0;
+		}
+
 		dev_err(&hdev->pdev->dev,
 			"Add vf vlan filter fail, ret =%d.\n",
 			req0->resp_code);