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net/skbuff: Introduce skb_mac_offset()

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Introduce skb_mac_offset() that could be used to get mac header offset.

Signed-off-by: Amir Vadai <amir@vadai.me>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai 2017-02-07 09:56:06 +02:00 • committed by David S. Miller
parent 58be2427da
commit ea6da4fd38
1 changed files with 5 additions and 0 deletions
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5
include/linux/skbuff.h
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@ -2184,6 +2184,11 @@ static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
return skb->head + skb->mac_header;
}
static inline int skb_mac_offset(const struct sk_buff *skb)
{
return skb_mac_header(skb) - skb->data;
}
static inline int skb_mac_header_was_set(const struct sk_buff *skb)
{
return skb->mac_header != (typeof(skb->mac_header))~0U;