/include/linux/ip6_tunnel.h

 1#ifndef _IP6_TUNNEL_H
 2#define _IP6_TUNNEL_H
 3
 4#include <linux/types.h>
 5
 6#define IPV6_TLV_TNL_ENCAP_LIMIT 4
 7#define IPV6_DEFAULT_TNL_ENCAP_LIMIT 4
 8
 9/* don't add encapsulation limit if one isn't present in inner packet */
10#define IP6_TNL_F_IGN_ENCAP_LIMIT 0x1
11/* copy the traffic class field from the inner packet */
12#define IP6_TNL_F_USE_ORIG_TCLASS 0x2
13/* copy the flowlabel from the inner packet */
14#define IP6_TNL_F_USE_ORIG_FLOWLABEL 0x4
15/* being used for Mobile IPv6 */
16#define IP6_TNL_F_MIP6_DEV 0x8
17/* copy DSCP from the outer packet */
18#define IP6_TNL_F_RCV_DSCP_COPY 0x10
19
20struct ip6_tnl_parm {
21	char name[IFNAMSIZ];	/* name of tunnel device */
22	int link;		/* ifindex of underlying L2 interface */
23	__u8 proto;		/* tunnel protocol */
24	__u8 encap_limit;	/* encapsulation limit for tunnel */
25	__u8 hop_limit;		/* hop limit for tunnel */
26	__be32 flowinfo;	/* traffic class and flowlabel for tunnel */
27	__u32 flags;		/* tunnel flags */
28	struct in6_addr laddr;	/* local tunnel end-point address */
29	struct in6_addr raddr;	/* remote tunnel end-point address */
30};
31
32#endif