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#ifndef _INET_DIAG_H_

#define _INET_DIAG_H_ 1

/* Just some random number */

#define TCPDIAG_GETSOCK 18

#define DCCPDIAG_GETSOCK 19

#define INET_DIAG_GETSOCK_MAX 24

/* Socket identity */

struct inet_diag_sockid {

        __be16  idiag_sport;

        __be16  idiag_dport;

        __be32  idiag_src[4];

        __be32  idiag_dst[4];

        __u32   idiag_if;

        __u32   idiag_cookie[2];

#define INET_DIAG_NOCOOKIE (~0U)

};

/* Request structure */

struct inet_diag_req {

        __u8    idiag_family;           /* Family of addresses. */

        __u8    idiag_src_len;

        __u8    idiag_dst_len;

        __u8    idiag_ext;              /* Query extended information */

        struct inet_diag_sockid id;

        __u32   idiag_states;           /* States to dump */

        __u32   idiag_dbs;              /* Tables to dump (NI) */

};

enum {

        INET_DIAG_REQ_NONE,

        INET_DIAG_REQ_BYTECODE,

};

#define INET_DIAG_REQ_MAX INET_DIAG_REQ_BYTECODE

/* Bytecode is sequence of 4 byte commands followed by variable arguments.

 * All the commands identified by "code" are conditional jumps forward:

 * to offset cc+"yes" or to offset cc+"no". "yes" is supposed to be

 * length of the command and its arguments.

 */

struct inet_diag_bc_op {

        unsigned char   code;

        unsigned char   yes;

        unsigned short  no;

};

enum {

        INET_DIAG_BC_NOP,

        INET_DIAG_BC_JMP,

        INET_DIAG_BC_S_GE,

        INET_DIAG_BC_S_LE,

        INET_DIAG_BC_D_GE,

        INET_DIAG_BC_D_LE,

        INET_DIAG_BC_AUTO,

        INET_DIAG_BC_S_COND,

        INET_DIAG_BC_D_COND,

};

struct inet_diag_hostcond {

        __u8    family;

        __u8    prefix_len;

        int     port;

        __be32  addr[0];

};

/* Base info structure. It contains socket identity (addrs/ports/cookie)

 * and, alas, the information shown by netstat. */

struct inet_diag_msg {

        __u8    idiag_family;

        __u8    idiag_state;

        __u8    idiag_timer;

        __u8    idiag_retrans;

        struct inet_diag_sockid id;

        __u32   idiag_expires;

        __u32   idiag_rqueue;

        __u32   idiag_wqueue;

        __u32   idiag_uid;

        __u32   idiag_inode;

};

/* Extensions */

enum {

        INET_DIAG_NONE,

        INET_DIAG_MEMINFO,

        INET_DIAG_INFO,

        INET_DIAG_VEGASINFO,

        INET_DIAG_CONG,

};

#define INET_DIAG_MAX INET_DIAG_CONG

/* INET_DIAG_MEM */

struct inet_diag_meminfo {

        __u32   idiag_rmem;

        __u32   idiag_wmem;

        __u32   idiag_fmem;

        __u32   idiag_tmem;

};

/* INET_DIAG_VEGASINFO */

struct tcpvegas_info {

        __u32   tcpv_enabled;

        __u32   tcpv_rttcnt;

        __u32   tcpv_rtt;

        __u32   tcpv_minrtt;

};

#ifdef __KERNEL__

struct sock;

struct inet_hashinfo;

struct inet_diag_handler {

        struct inet_hashinfo    *idiag_hashinfo;

        void                    (*idiag_get_info)(struct sock *sk,

                                                  struct inet_diag_msg *r,

                                                  void *info);

        __u16                   idiag_info_size;

        __u16                   idiag_type;

};

extern int  inet_diag_register(const struct inet_diag_handler *handler);

extern void inet_diag_unregister(const struct inet_diag_handler *handler);

#endif /* __KERNEL__ */

#endif /* _INET_DIAG_H_ */