include/linux/ip6_tunnel.h

   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 #endif