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#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_ */