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