release/src-rt-6.x.4708/linux/linux-2.6.36/include/net/ipcomp.h

   1 #ifndef _NET_IPCOMP_H
   2 #define _NET_IPCOMP_H
   3
   4 #include <linux/types.h>
   5
   6 #define IPCOMP_SCRATCH_SIZE     65400
   7
   8 struct crypto_comp;
   9
  10 struct ipcomp_data {
  11         u16 threshold;
  12         struct crypto_comp * __percpu *tfms;
  13 };
  14
  15 struct ip_comp_hdr;
  16 struct sk_buff;
  17 struct xfrm_state;
  18
  19 int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb);
  20 int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb);
  21 void ipcomp_destroy(struct xfrm_state *x);
  22 int ipcomp_init_state(struct xfrm_state *x);
  23
  24 static inline struct ip_comp_hdr *ip_comp_hdr(const struct sk_buff *skb)
  25 {
  26         return (struct ip_comp_hdr *)skb_transport_header(skb);
  27 }
  28
  29 #endif