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vlan: Move vlan_set_encap_proto() to vlan header file

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Open vSwitch needs this function for vlan handling.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
This commit is contained in:
Pravin B Shelar 2011-11-18 13:15:54 -08:00 committed by Jesse Gross
parent b4e16611c4
commit 396cf94305
2 changed files with 34 additions and 33 deletions
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34
include/linux/if_vlan.h
View File

@ -310,6 +310,40 @@ static inline __be16 vlan_get_protocol(const struct sk_buff *skb)
return protocol;
}
static inline void vlan_set_encap_proto(struct sk_buff *skb,
struct vlan_hdr *vhdr)
{
__be16 proto;
unsigned char *rawp;
/*
* Was a VLAN packet, grab the encapsulated protocol, which the layer
* three protocols care about.
*/
proto = vhdr->h_vlan_encapsulated_proto;
if (ntohs(proto) >= 1536) {
skb->protocol = proto;
return;
}
rawp = skb->data;
if (*(unsigned short *) rawp == 0xFFFF)
/*
* This is a magic hack to spot IPX packets. Older Novell
* breaks the protocol design and runs IPX over 802.3 without
* an 802.2 LLC layer. We look for FFFF which isn't a used
* 802.2 SSAP/DSAP. This won't work for fault tolerant netware
* but does for the rest.
*/
skb->protocol = htons(ETH_P_802_3);
else
/*
* Real 802.2 LLC
*/
skb->protocol = htons(ETH_P_802_2);
}
#endif /* __KERNEL__ */
/* VLAN IOCTLs are found in sockios.h */

33
net/8021q/vlan_core.c
View File

@ -110,39 +110,6 @@ static struct sk_buff *vlan_reorder_header(struct sk_buff *skb)
return skb;
}
static void vlan_set_encap_proto(struct sk_buff *skb, struct vlan_hdr *vhdr)
{
__be16 proto;
unsigned char *rawp;
/*
* Was a VLAN packet, grab the encapsulated protocol, which the layer
* three protocols care about.
*/
proto = vhdr->h_vlan_encapsulated_proto;
if (ntohs(proto) >= 1536) {
skb->protocol = proto;
return;
}
rawp = skb->data;
if (*(unsigned short *) rawp == 0xFFFF)
/*
* This is a magic hack to spot IPX packets. Older Novell
* breaks the protocol design and runs IPX over 802.3 without
* an 802.2 LLC layer. We look for FFFF which isn't a used
* 802.2 SSAP/DSAP. This won't work for fault tolerant netware
* but does for the rest.
*/
skb->protocol = htons(ETH_P_802_3);
else
/*
* Real 802.2 LLC
*/
skb->protocol = htons(ETH_P_802_2);
}
struct sk_buff *vlan_untag(struct sk_buff *skb)
{
struct vlan_hdr *vhdr;