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 10struct crypto_comp; 11struct ip_comp_hdr; 12 13struct ipcomp_data { 14 u16 threshold; 15 struct crypto_comp * __percpu *tfms; 16}; 17 18struct ip_comp_hdr; 19struct sk_buff; 20struct xfrm_state; 21 22int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb); 23int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb); 24void ipcomp_destroy(struct xfrm_state *x); 25int ipcomp_init_state(struct xfrm_state *x, struct netlink_ext_ack *extack); 26 27static 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 33