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 struct ip_tunnel_parm 21 { 22 char name[IFNAMSIZ]; 23 int link; 24 __be16 i_flags; 25 __be16 o_flags; 26 __be32 i_key; 27 __be32 o_key; 28 struct iphdr iph; 29 }; 30 31 #endif /* _IF_TUNNEL_H_ */ 32