#ifndef _IF_TUNNEL_H_ #define _IF_TUNNEL_H_ #include <linux/types.h> #define SIOCGETTUNNEL (SIOCDEVPRIVATE + 0) #define SIOCADDTUNNEL (SIOCDEVPRIVATE + 1) #define SIOCDELTUNNEL (SIOCDEVPRIVATE + 2) #define SIOCCHGTUNNEL (SIOCDEVPRIVATE + 3) #define GRE_CSUM __constant_htons(0x8000) #define GRE_ROUTING __constant_htons(0x4000) #define GRE_KEY __constant_htons(0x2000) #define GRE_SEQ __constant_htons(0x1000) #define GRE_STRICT __constant_htons(0x0800) #define GRE_REC __constant_htons(0x0700) #define GRE_FLAGS __constant_htons(0x00F8) #define GRE_VERSION __constant_htons(0x0007) struct ip_tunnel_parm { char name[IFNAMSIZ]; int link; __be16 i_flags; __be16 o_flags; __be32 i_key; __be32 o_key; struct iphdr iph; }; #endif /* _IF_TUNNEL_H_ */