diff options
Diffstat (limited to 'include/linux/if_vlan.h')
| -rw-r--r-- | include/linux/if_vlan.h | 39 |
1 files changed, 37 insertions, 2 deletions
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h index c4a1cff9c768..d11f41d5269f 100644 --- a/include/linux/if_vlan.h +++ b/include/linux/if_vlan.h @@ -83,6 +83,30 @@ static inline bool is_vlan_dev(const struct net_device *dev) #define skb_vlan_tag_get_id(__skb) ((__skb)->vlan_tci & VLAN_VID_MASK) #define skb_vlan_tag_get_prio(__skb) ((__skb)->vlan_tci & VLAN_PRIO_MASK) +static inline int vlan_get_rx_ctag_filter_info(struct net_device *dev) +{ + ASSERT_RTNL(); + return notifier_to_errno(call_netdevice_notifiers(NETDEV_CVLAN_FILTER_PUSH_INFO, dev)); +} + +static inline void vlan_drop_rx_ctag_filter_info(struct net_device *dev) +{ + ASSERT_RTNL(); + call_netdevice_notifiers(NETDEV_CVLAN_FILTER_DROP_INFO, dev); +} + +static inline int vlan_get_rx_stag_filter_info(struct net_device *dev) +{ + ASSERT_RTNL(); + return notifier_to_errno(call_netdevice_notifiers(NETDEV_SVLAN_FILTER_PUSH_INFO, dev)); +} + +static inline void vlan_drop_rx_stag_filter_info(struct net_device *dev) +{ + ASSERT_RTNL(); + call_netdevice_notifiers(NETDEV_SVLAN_FILTER_DROP_INFO, dev); +} + /** * struct vlan_pcpu_stats - VLAN percpu rx/tx stats * @rx_packets: number of received packets @@ -323,13 +347,24 @@ static inline int __vlan_insert_inner_tag(struct sk_buff *skb, skb_push(skb, VLAN_HLEN); /* Move the mac header sans proto to the beginning of the new header. */ - memmove(skb->data, skb->data + VLAN_HLEN, mac_len - ETH_TLEN); + if (likely(mac_len > ETH_TLEN)) + memmove(skb->data, skb->data + VLAN_HLEN, mac_len - ETH_TLEN); skb->mac_header -= VLAN_HLEN; veth = (struct vlan_ethhdr *)(skb->data + mac_len - ETH_HLEN); /* first, the ethernet type */ - veth->h_vlan_proto = vlan_proto; + if (likely(mac_len >= ETH_TLEN)) { + /* h_vlan_encapsulated_proto should already be populated, and + * skb->data has space for h_vlan_proto + */ + veth->h_vlan_proto = vlan_proto; + } else { + /* h_vlan_encapsulated_proto should not be populated, and + * skb->data has no space for h_vlan_proto + */ + veth->h_vlan_encapsulated_proto = skb->protocol; + } /* now, the TCI */ veth->h_vlan_TCI = htons(vlan_tci); |