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 ip_comp_hdr(const struct sk_buff * skb)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