/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ #ifndef _IP6_TUNNEL_H #define _IP6_TUNNEL_H #include <linux/types.h> #include <linux/if.h> /* For IFNAMSIZ. */ #include <linux/in6.h> /* For struct in6_addr. */ #define IPV6_TLV_TNL_ENCAP_LIMIT 4 #define IPV6_DEFAULT_TNL_ENCAP_LIMIT 4 /* don't add encapsulation limit if one isn't present in inner packet */ #define IP6_TNL_F_IGN_ENCAP_LIMIT 0x1 /* copy the traffic class field from the inner packet */ #define IP6_TNL_F_USE_ORIG_TCLASS 0x2 /* copy the flowlabel from the inner packet */ #define IP6_TNL_F_USE_ORIG_FLOWLABEL 0x4 /* being used for Mobile IPv6 */ #define IP6_TNL_F_MIP6_DEV 0x8 /* copy DSCP from the outer packet */ #define IP6_TNL_F_RCV_DSCP_COPY 0x10 /* copy fwmark from inner packet */ #define IP6_TNL_F_USE_ORIG_FWMARK 0x20 /* allow remote endpoint on the local node */ #define IP6_TNL_F_ALLOW_LOCAL_REMOTE 0x40 struct ip6_tnl_parm { char name[IFNAMSIZ]; /* name of tunnel device */ int link; /* ifindex of underlying L2 interface */ __u8 proto; /* tunnel protocol */ __u8 encap_limit; /* encapsulation limit for tunnel */ __u8 hop_limit; /* hop limit for tunnel */ __be32 flowinfo; /* traffic class and flowlabel for tunnel */ __u32 flags; /* tunnel flags */ struct in6_addr laddr; /* local tunnel end-point address */ struct in6_addr raddr; /* remote tunnel end-point address */ }; struct ip6_tnl_parm2 { char name[IFNAMSIZ]; /* name of tunnel device */ int link; /* ifindex of underlying L2 interface */ __u8 proto; /* tunnel protocol */ __u8 encap_limit; /* encapsulation limit for tunnel */ __u8 hop_limit; /* hop limit for tunnel */ __be32 flowinfo; /* traffic class and flowlabel for tunnel */ __u32 flags; /* tunnel flags */ struct in6_addr laddr; /* local tunnel end-point address */ struct in6_addr raddr; /* remote tunnel end-point address */ __be16 i_flags; __be16 o_flags; __be32 i_key; __be32 o_key; }; #endif