1#ifndef _IF_TUNNEL_H_
2#define _IF_TUNNEL_H_
3
4#include <linux/types.h>
5
6#define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
7#define SIOCADDTUNNEL   (SIOCDEVPRIVATE + 1)
8#define SIOCDELTUNNEL   (SIOCDEVPRIVATE + 2)
9#define SIOCCHGTUNNEL   (SIOCDEVPRIVATE + 3)
10
11#define GRE_CSUM	__constant_htons(0x8000)
12#define GRE_ROUTING	__constant_htons(0x4000)
13#define GRE_KEY		__constant_htons(0x2000)
14#define GRE_SEQ		__constant_htons(0x1000)
15#define GRE_STRICT	__constant_htons(0x0800)
16#define GRE_REC		__constant_htons(0x0700)
17#define GRE_FLAGS	__constant_htons(0x00F8)
18#define GRE_VERSION	__constant_htons(0x0007)
19
20struct ip_tunnel_parm
21{
22	char			name[IFNAMSIZ];
23	int			link;
24	__be16			i_flags;
25	__be16			o_flags;
26	__be32			i_key;
27	__be32			o_key;
28	struct iphdr		iph;
29};
30
31#endif /* _IF_TUNNEL_H_ */
32