1 #ifndef _NET_AH_H
2 #define _NET_AH_H
3 
4 #include <linux/skbuff.h>
5 
6 /* This is the maximum truncated ICV length that we know of. */
7 #define MAX_AH_AUTH_LEN	64
8 
9 struct crypto_ahash;
10 
11 struct ah_data {
12 	int			icv_full_len;
13 	int			icv_trunc_len;
14 
15 	struct crypto_ahash	*ahash;
16 };
17 
18 struct ip_auth_hdr;
19 
ip_auth_hdr(const struct sk_buff * skb)20 static inline struct ip_auth_hdr *ip_auth_hdr(const struct sk_buff *skb)
21 {
22 	return (struct ip_auth_hdr *)skb_transport_header(skb);
23 }
24 
25 #endif
26