diff options
Diffstat (limited to 'net/dsa/tag_8021q.c')
| -rw-r--r-- | net/dsa/tag_8021q.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/net/dsa/tag_8021q.c b/net/dsa/tag_8021q.c index 122ad5833fb1..4aa29f90ecea 100644 --- a/net/dsa/tag_8021q.c +++ b/net/dsa/tag_8021q.c @@ -471,4 +471,27 @@ struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev, } EXPORT_SYMBOL_GPL(dsa_8021q_xmit); +void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id, + int *subvlan) +{ + u16 vid, tci; + + skb_push_rcsum(skb, ETH_HLEN); + if (skb_vlan_tag_present(skb)) { + tci = skb_vlan_tag_get(skb); + __vlan_hwaccel_clear_tag(skb); + } else { + __skb_vlan_pop(skb, &tci); + } + skb_pull_rcsum(skb, ETH_HLEN); + + vid = tci & VLAN_VID_MASK; + + *source_port = dsa_8021q_rx_source_port(vid); + *switch_id = dsa_8021q_rx_switch_id(vid); + *subvlan = dsa_8021q_rx_subvlan(vid); + skb->priority = (tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; +} +EXPORT_SYMBOL_GPL(dsa_8021q_rcv); + MODULE_LICENSE("GPL v2"); |