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net: skbuff: Export __skb_vlan_pop

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This exports the functionality of extracting the tag from the payload,
without moving next vlan tag into hw accel tag.

Signed-off-by: Shmulik Ladkani <shmulik.ladkani@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shmulik Ladkani 2016-09-19 19:11:09 +03:00 committed by David S. Miller
parent 688dc5369a
commit bfca4c520f
2 changed files with 6 additions and 2 deletions
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1
include/linux/skbuff.h
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@ -3085,6 +3085,7 @@ bool skb_gso_validate_mtu(const struct sk_buff *skb, unsigned int mtu);
struct sk_buff *skb_segment(struct sk_buff *skb, netdev_features_t features);
struct sk_buff *skb_vlan_untag(struct sk_buff *skb);
int skb_ensure_writable(struct sk_buff *skb, int write_len);
int __skb_vlan_pop(struct sk_buff *skb, u16 *vlan_tci);
int skb_vlan_pop(struct sk_buff *skb);
int skb_vlan_push(struct sk_buff *skb, __be16 vlan_proto, u16 vlan_tci);
struct sk_buff *pskb_extract(struct sk_buff *skb, int off, int to_copy,

7
net/core/skbuff.c
View File

@ -4522,8 +4522,10 @@ int skb_ensure_writable(struct sk_buff *skb, int write_len)
}
EXPORT_SYMBOL(skb_ensure_writable);
/* remove VLAN header from packet and update csum accordingly. */
static int __skb_vlan_pop(struct sk_buff *skb, u16 *vlan_tci)
/* remove VLAN header from packet and update csum accordingly.
* expects a non skb_vlan_tag_present skb with a vlan tag payload
*/
int __skb_vlan_pop(struct sk_buff *skb, u16 *vlan_tci)
{
struct vlan_hdr *vhdr;
unsigned int offset = skb->data - skb_mac_header(skb);
@ -4554,6 +4556,7 @@ pull:
return err;
}
EXPORT_SYMBOL(__skb_vlan_pop);
int skb_vlan_pop(struct sk_buff *skb)
{