/* * 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 *//* * UDP kernel structures and variables. */struct	udpiphdr {	struct 	ipovly ui_i;		/* overlaid ip structure */	struct	udphdr ui_u;		/* udp header */};#define	ui_next		ui_i.ih_next#define	ui_prev		ui_i.ih_prev#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_sumstruct	udpstat {				/* input statistics: */	n_long	udps_ipackets;		/* total input packets */	n_long	udps_hdrops;		/* packet shorter than header */	n_long	udps_badsum;		/* checksum error */	n_long	udps_badlen;		/* data length larger than packet */	n_long	udps_noport;		/* no socket on port */	n_long	udps_noportbcast;	/* of above, arrived as broadcast */	n_long	udps_fullsock;		/* not delivered, input socket full */	n_long	udpps_pcbcachemiss;	/* input packets missing pcb cache */				/* output statistics: */	n_long	udps_opackets;		/* total output packets */};/* * Names for UDP sysctl objects */#define	UDPCTL_CHECKSUM		1	/* checksum UDP packets */#define UDPCTL_MAXID		2#define UDPCTL_NAMES { \	{ 0, 0 }, \	{ "checksum", CTLTYPE_INT }, \}#ifdef KERNELstruct	inpcb udb;struct	udpstat udpstat;void	 udp_ctlinput __P((int, struct sockaddr *, struct ip *));void	 udp_init __P((void));void	 udp_input __P((struct mbuf *, int));int	 udp_output __P((struct inpcb *,	    struct mbuf *, struct mbuf *, 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 *));#endif