1 #ifndef _IF_TUNNEL_H_ 2 #define _IF_TUNNEL_H_ 3 4 #define SIOCGETTUNNEL (SIOCDEVPRIVATE + 0) 5 #define SIOCADDTUNNEL (SIOCDEVPRIVATE + 1) 6 #define SIOCDELTUNNEL (SIOCDEVPRIVATE + 2) 7 #define SIOCCHGTUNNEL (SIOCDEVPRIVATE + 3) 8 9 #define GRE_CSUM __constant_htons(0x8000) 10 #define GRE_ROUTING __constant_htons(0x4000) 11 #define GRE_KEY __constant_htons(0x2000) 12 #define GRE_SEQ __constant_htons(0x1000) 13 #define GRE_STRICT __constant_htons(0x0800) 14 #define GRE_REC __constant_htons(0x0700) 15 #define GRE_FLAGS __constant_htons(0x00F8) 16 #define GRE_VERSION __constant_htons(0x0007) 17 18 struct ip_tunnel_parm 19 { 20 char name[IFNAMSIZ]; 21 int link; 22 __u16 i_flags; 23 __u16 o_flags; 24 __u32 i_key; 25 __u32 o_key; 26 struct iphdr iph; 27 }; 28 29 #endif /* _IF_TUNNEL_H_ */ 30