diff options
Diffstat (limited to 'net/8021q/vlan.c')
| -rw-r--r-- | net/8021q/vlan.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index 5505ee6ebdbe..73a65789271b 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -118,17 +118,21 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) } int vlan_check_real_dev(struct net_device *real_dev, - __be16 protocol, u16 vlan_id) + __be16 protocol, u16 vlan_id, + struct netlink_ext_ack *extack) { const char *name = real_dev->name; if (real_dev->features & NETIF_F_VLAN_CHALLENGED) { pr_info("VLANs not supported on %s\n", name); + NL_SET_ERR_MSG_MOD(extack, "VLANs not supported on device"); return -EOPNOTSUPP; } - if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) + if (vlan_find_dev(real_dev, protocol, vlan_id) != NULL) { + NL_SET_ERR_MSG_MOD(extack, "VLAN device already exists"); return -EEXIST; + } return 0; } @@ -215,7 +219,8 @@ static int register_vlan_device(struct net_device *real_dev, u16 vlan_id) if (vlan_id >= VLAN_VID_MASK) return -ERANGE; - err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id); + err = vlan_check_real_dev(real_dev, htons(ETH_P_8021Q), vlan_id, + NULL); if (err < 0) return err; |