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