#ifndef _INET_DIAG_H_
  #define _INET_DIAG_H_ 1

  #include <linux/types.h>

  /* 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_ */