include/net/ipcomp.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _NET_IPCOMP_H
   3 #define _NET_IPCOMP_H
   4
   5 #include <linux/skbuff.h>
   6 #include <linux/types.h>
   7
   8 #define IPCOMP_SCRATCH_SIZE     65400
   9
  10 struct crypto_comp;
  11 struct ip_comp_hdr;
  12
  13 struct ipcomp_data {
  14         u16 threshold;
  15         struct crypto_comp * __percpu *tfms;
  16 };
  17
  18 struct ip_comp_hdr;
  19 struct sk_buff;
  20 struct xfrm_state;
  21
  22 int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb);
  23 int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb);
  24 void ipcomp_destroy(struct xfrm_state *x);
  25 int ipcomp_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack);
  26
  27 static inline struct ip_comp_hdr *ip_comp_hdr(const struct sk_buff *skb)
  28 {
  29         return (struct ip_comp_hdr *)skb_transport_header(skb);
  30 }
  31
  32 #endif