| /* |
| * 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 |