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
27 struct 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
39 struct 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