@@ -4107,6 +4107,7 @@ int hclge_add_uc_addr_common(struct hclge_vport *vport,
{
struct hclge_dev *hdev = vport->back;
struct hclge_mac_vlan_tbl_entry_cmd req;
+ struct hclge_desc desc;
u16 egress_port = 0;
int ret;
@@ -4140,7 +4141,21 @@ int hclge_add_uc_addr_common(struct hclge_vport *vport,
hclge_prepare_mac_addr(&req, addr);
- ret = hclge_add_mac_vlan_tbl(vport, &req, NULL);
+ /* Lookup the mac address in the mac_vlan table, and add
+ * it if the entry is inexistent. Repeated unicast entry
+ * is not allowed in the mac vlan table.
+ */
+ ret = hclge_lookup_mac_vlan_tbl(vport, &req, &desc, false);
+ if (ret == -ENOENT)
+ return hclge_add_mac_vlan_tbl(vport, &req, NULL);
+
+ /* check if we just hit the duplicate */
+ if (!ret)
+ ret = -EINVAL;
+
+ dev_err(&hdev->pdev->dev,
+ "PF failed to add unicast entry(%pM) in the MAC table\n",
+ addr);
return ret;
}