text: /*	$NetBSD: udp_var.h,v 1.15 1998/02/10 01:27:25 perry Exp $	*/
  
  /*
   * Copyright (c) 1982, 1986, 1989, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   *	@(#)udp_var.h	8.1 (Berkeley) 6/10/93
   */
  
  #ifndef _NETINET_UDP_VAR_H_
  #define _NETINET_UDP_VAR_H_
  
  /*
   * UDP kernel structures and variables.
   */
  struct	udpiphdr {
  	struct 	ipovly ui_i;		/* overlaid ip structure */
  	struct	udphdr ui_u;		/* udp header */
  };
  #define	ui_x1		ui_i.ih_x1
  #define	ui_pr		ui_i.ih_pr
  #define	ui_len		ui_i.ih_len
  #define	ui_src		ui_i.ih_src
  #define	ui_dst		ui_i.ih_dst
  #define	ui_sport	ui_u.uh_sport
  #define	ui_dport	ui_u.uh_dport
  #define	ui_ulen		ui_u.uh_ulen
  #define	ui_sum		ui_u.uh_sum
  
  struct	udpstat {
  				/* input statistics: */
  	u_long	udps_ipackets;		/* total input packets */
  	u_long	udps_hdrops;		/* packet shorter than header */
  	u_long	udps_badsum;		/* checksum error */
  	u_long	udps_badlen;		/* data length larger than packet */
  	u_long	udps_noport;		/* no socket on port */
  	u_long	udps_noportbcast;	/* of above, arrived as broadcast */
  	u_long	udps_fullsock;		/* not delivered, input socket full */
  	u_long	udps_pcbhashmiss;	/* input packets missing pcb hash */
  				/* output statistics: */
  	u_long	udps_opackets;		/* total output packets */
  };
  
  /*
   * Names for UDP sysctl objects
   */
  #define	UDPCTL_CHECKSUM		1	/* checksum UDP packets */
  #define	UDPCTL_SENDSPACE	2	/* default send buffer */
  #define	UDPCTL_RECVSPACE	3	/* default recv buffer */
  #define	UDPCTL_MAXID		4
  
  #define UDPCTL_NAMES { \
  	{ 0, 0 }, \
  	{ "checksum", CTLTYPE_INT }, \
  	{ "sendspace", CTLTYPE_INT }, \
  	{ "recvspace", CTLTYPE_INT }, \
  }
  
  #ifdef _KERNEL
  struct	inpcbtable udbtable;
  struct	udpstat udpstat;
  
  void	 *udp_ctlinput __P((int, struct sockaddr *, void *));
  void	 udp_init __P((void));
  void	 udp_input __P((struct mbuf *, ...));
  int	 udp_output __P((struct mbuf *, ...));
  int	 udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
  int	 udp_usrreq __P((struct socket *,
  	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *));
  #endif
  
  #endif /* _NETINET_UDP_VAR_H_ */
  