include/linux/if_tunnel.h

   1 #ifndef _IF_TUNNEL_H_
   2 #define _IF_TUNNEL_H_
   3
   4 #include <linux/types.h>
   5
   6 #define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
   7 #define SIOCADDTUNNEL   (SIOCDEVPRIVATE + 1)
   8 #define SIOCDELTUNNEL   (SIOCDEVPRIVATE + 2)
   9 #define SIOCCHGTUNNEL   (SIOCDEVPRIVATE + 3)
  10
  11 #define GRE_CSUM        __constant_htons(0x8000)
  12 #define GRE_ROUTING     __constant_htons(0x4000)
  13 #define GRE_KEY         __constant_htons(0x2000)
  14 #define GRE_SEQ         __constant_htons(0x1000)
  15 #define GRE_STRICT      __constant_htons(0x0800)
  16 #define GRE_REC         __constant_htons(0x0700)
  17 #define GRE_FLAGS       __constant_htons(0x00F8)
  18 #define GRE_VERSION     __constant_htons(0x0007)
  19
  20 /* i_flags values for SIT mode */
  21 #define SIT_ISATAP      0x0001
  22
  23 struct ip_tunnel_parm
  24 {
  25         char                    name[IFNAMSIZ];
  26         int                     link;
  27         __be16                  i_flags;
  28         __be16                  o_flags;
  29         __be32                  i_key;
  30         __be32                  o_key;
  31         struct iphdr            iph;
  32 };
  33
  34 #endif /* _IF_TUNNEL_H_ */