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 25 struct ip6_tnl_parm { 26 char name[IFNAMSIZ]; /* name of tunnel device */ 27 int link; /* ifindex of underlying L2 interface */ 28 __u8 proto; /* tunnel protocol */ 29 __u8 encap_limit; /* encapsulation limit for tunnel */ 30 __u8 hop_limit; /* hop limit for tunnel */ 31 __be32 flowinfo; /* traffic class and flowlabel for tunnel */ 32 __u32 flags; /* tunnel flags */ 33 struct in6_addr laddr; /* local tunnel end-point address */ 34 struct in6_addr raddr; /* remote tunnel end-point address */ 35 }; 36 37 struct ip6_tnl_parm2 { 38 char name[IFNAMSIZ]; /* name of tunnel device */ 39 int link; /* ifindex of underlying L2 interface */ 40 __u8 proto; /* tunnel protocol */ 41 __u8 encap_limit; /* encapsulation limit for tunnel */ 42 __u8 hop_limit; /* hop limit for tunnel */ 43 __be32 flowinfo; /* traffic class and flowlabel for tunnel */ 44 __u32 flags; /* tunnel flags */ 45 struct in6_addr laddr; /* local tunnel end-point address */ 46 struct in6_addr raddr; /* remote tunnel end-point address */ 47 48 __be16 i_flags; 49 __be16 o_flags; 50 __be32 i_key; 51 __be32 o_key; 52 }; 53 54 #endif 55