37 lines
878 B
C
37 lines
878 B
C
|
/*
|
||
|
|
* SR-IPv6 implementation
|
||
|
|
*
|
||
|
|
* Author:
|
||
|
|
* David Lebrun <david.lebrun@uclouvain.be>
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _NET_SEG6_H
|
||
|
|
#define _NET_SEG6_H
|
||
|
|
|
||
|
|
static inline void update_csum_diff4(struct sk_buff *skb, __be32 from,
|
||
|
|
__be32 to)
|
||
|
|
{
|
||
|
|
__be32 diff[] = { ~from, to };
|
||
|
|
|
||
|
|
skb->csum = ~csum_partial((char *)diff, sizeof(diff), ~skb->csum);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void update_csum_diff16(struct sk_buff *skb, __be32 *from,
|
||
|
|
__be32 *to)
|
||
|
|
{
|
||
|
|
__be32 diff[] = {
|
||
|
|
~from[0], ~from[1], ~from[2], ~from[3],
|
||
|
|
to[0], to[1], to[2], to[3],
|
||
|
|
};
|
||
|
|
|
||
|
|
skb->csum = ~csum_partial((char *)diff, sizeof(diff), ~skb->csum);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif
|