1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _IP6_TUNNEL_H
3#define _IP6_TUNNEL_H
4
5#include <linux/types.h>
6#include <linux/if.h>		/* For IFNAMSIZ. */
7#include <linux/in6.h>		/* For struct in6_addr. */
8
9#define IPV6_TLV_TNL_ENCAP_LIMIT 4
10#define IPV6_DEFAULT_TNL_ENCAP_LIMIT 4
11
12/* don't add encapsulation limit if one isn't present in inner packet */
13#define IP6_TNL_F_IGN_ENCAP_LIMIT 0x1
14/* copy the traffic class field from the inner packet */
15#define IP6_TNL_F_USE_ORIG_TCLASS 0x2
16/* copy the flowlabel from the inner packet */
17#define IP6_TNL_F_USE_ORIG_FLOWLABEL 0x4
18/* being used for Mobile IPv6 */
19#define IP6_TNL_F_MIP6_DEV 0x8
20/* copy DSCP from the outer packet */
21#define IP6_TNL_F_RCV_DSCP_COPY 0x10
22/* copy fwmark from inner packet */
23#define IP6_TNL_F_USE_ORIG_FWMARK 0x20
24/* allow remote endpoint on the local node */
25#define IP6_TNL_F_ALLOW_LOCAL_REMOTE 0x40
26
27struct ip6_tnl_parm {
28	char name[IFNAMSIZ];	/* name of tunnel device */
29	int link;		/* ifindex of underlying L2 interface */
30	__u8 proto;		/* tunnel protocol */
31	__u8 encap_limit;	/* encapsulation limit for tunnel */
32	__u8 hop_limit;		/* hop limit for tunnel */
33	__be32 flowinfo;	/* traffic class and flowlabel for tunnel */
34	__u32 flags;		/* tunnel flags */
35	struct in6_addr laddr;	/* local tunnel end-point address */
36	struct in6_addr raddr;	/* remote tunnel end-point address */
37};
38
39struct ip6_tnl_parm2 {
40	char name[IFNAMSIZ];	/* name of tunnel device */
41	int link;		/* ifindex of underlying L2 interface */
42	__u8 proto;		/* tunnel protocol */
43	__u8 encap_limit;	/* encapsulation limit for tunnel */
44	__u8 hop_limit;		/* hop limit for tunnel */
45	__be32 flowinfo;	/* traffic class and flowlabel for tunnel */
46	__u32 flags;		/* tunnel flags */
47	struct in6_addr laddr;	/* local tunnel end-point address */
48	struct in6_addr raddr;	/* remote tunnel end-point address */
49
50	__be16			i_flags;
51	__be16			o_flags;
52	__be32			i_key;
53	__be32			o_key;
54};
55
56#endif
57