root/include/linux/if_tunnel.h

INCLUDED FROM

#ifndef _IF_TUNNEL_H_
#define _IF_TUNNEL_H_

#include <linux/types.h>
#include <linux/ip.h>

#define SIOCGETTUNNEL   (SIOCDEVPRIVATE + 0)
#define SIOCADDTUNNEL   (SIOCDEVPRIVATE + 1)
#define SIOCDELTUNNEL   (SIOCDEVPRIVATE + 2)
#define SIOCCHGTUNNEL   (SIOCDEVPRIVATE + 3)
#define SIOCGETPRL      (SIOCDEVPRIVATE + 4)
#define SIOCADDPRL      (SIOCDEVPRIVATE + 5)
#define SIOCDELPRL      (SIOCDEVPRIVATE + 6)
#define SIOCCHGPRL      (SIOCDEVPRIVATE + 7)

#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;
};

/* SIT-mode i_flags */
#define SIT_ISATAP      0x0001

struct ip_tunnel_prl {
        __be32                  addr;
        __u16                   flags;
        __u16                   __reserved;
        __u32                   datalen;
        __u32                   __reserved2;
        /* data follows */
};

/* PRL flags */
#define PRL_DEFAULT             0x0001

enum
{
        IFLA_GRE_UNSPEC,
        IFLA_GRE_LINK,
        IFLA_GRE_IFLAGS,
        IFLA_GRE_OFLAGS,
        IFLA_GRE_IKEY,
        IFLA_GRE_OKEY,
        IFLA_GRE_LOCAL,
        IFLA_GRE_REMOTE,
        IFLA_GRE_TTL,
        IFLA_GRE_TOS,
        IFLA_GRE_PMTUDISC,
        __IFLA_GRE_MAX,
};

#define IFLA_GRE_MAX    (__IFLA_GRE_MAX - 1)

#endif /* _IF_TUNNEL_H_ */