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udp_var.h revision 1.8 
      1 /*	$NetBSD: udp_var.h,v 1.8 1995/03/26 20:32:42 jtc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1989, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)udp_var.h	8.1 (Berkeley) 6/10/93
     36  */
     37 
     38 /*
     39  * UDP kernel structures and variables.
     40  */
     41 struct	udpiphdr {
     42 	struct 	ipovly ui_i;		/* overlaid ip structure */
     43 	struct	udphdr ui_u;		/* udp header */
     44 };
     45 #define	ui_next		ui_i.ih_next
     46 #define	ui_prev		ui_i.ih_prev
     47 #define	ui_x1		ui_i.ih_x1
     48 #define	ui_pr		ui_i.ih_pr
     49 #define	ui_len		ui_i.ih_len
     50 #define	ui_src		ui_i.ih_src
     51 #define	ui_dst		ui_i.ih_dst
     52 #define	ui_sport	ui_u.uh_sport
     53 #define	ui_dport	ui_u.uh_dport
     54 #define	ui_ulen		ui_u.uh_ulen
     55 #define	ui_sum		ui_u.uh_sum
     56 
     57 struct	udpstat {
     58 				/* input statistics: */
     59 	u_long	udps_ipackets;		/* total input packets */
     60 	u_long	udps_hdrops;		/* packet shorter than header */
     61 	u_long	udps_badsum;		/* checksum error */
     62 	u_long	udps_badlen;		/* data length larger than packet */
     63 	u_long	udps_noport;		/* no socket on port */
     64 	u_long	udps_noportbcast;	/* of above, arrived as broadcast */
     65 	u_long	udps_fullsock;		/* not delivered, input socket full */
     66 	u_long	udpps_pcbcachemiss;	/* input packets missing pcb cache */
     67 				/* output statistics: */
     68 	u_long	udps_opackets;		/* total output packets */
     69 };
     70 
     71 /*
     72  * Names for UDP sysctl objects
     73  */
     74 #define	UDPCTL_CHECKSUM		1	/* checksum UDP packets */
     75 #define UDPCTL_MAXID		2
     76 
     77 #define UDPCTL_NAMES { \
     78 	{ 0, 0 }, \
     79 	{ "checksum", CTLTYPE_INT }, \
     80 }
     81 
     82 #ifdef _KERNEL
     83 struct	inpcb udb;
     84 struct	udpstat udpstat;
     85 
     86 void	 udp_ctlinput __P((int, struct sockaddr *, struct ip *));
     87 void	 udp_init __P((void));
     88 void	 udp_input __P((struct mbuf *, int));
     89 int	 udp_output __P((struct inpcb *,
     90 	    struct mbuf *, struct mbuf *, struct mbuf *));
     91 int	 udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
     92 int	 udp_usrreq __P((struct socket *,
     93 	    int, struct mbuf *, struct mbuf *, struct mbuf *));
     94 #endif
     95