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udp_var.h revision 1.17 
      1 /*	$NetBSD: udp_var.h,v 1.17 1999/11/20 00:38:00 thorpej 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 #ifndef _NETINET_UDP_VAR_H_
     39 #define _NETINET_UDP_VAR_H_
     40 
     41 /*
     42  * UDP kernel structures and variables.
     43  */
     44 struct	udpiphdr {
     45 	struct 	ipovly ui_i;		/* overlaid ip structure */
     46 	struct	udphdr ui_u;		/* udp header */
     47 } __attribute__((__packed__));
     48 #define	ui_x1		ui_i.ih_x1
     49 #define	ui_pr		ui_i.ih_pr
     50 #define	ui_len		ui_i.ih_len
     51 #define	ui_src		ui_i.ih_src
     52 #define	ui_dst		ui_i.ih_dst
     53 #define	ui_sport	ui_u.uh_sport
     54 #define	ui_dport	ui_u.uh_dport
     55 #define	ui_ulen		ui_u.uh_ulen
     56 #define	ui_sum		ui_u.uh_sum
     57 
     58 struct	udpstat {
     59 					/* input statistics: */
     60 	u_quad_t udps_ipackets;		/* total input packets */
     61 	u_quad_t udps_hdrops;		/* packet shorter than header */
     62 	u_quad_t udps_badsum;		/* checksum error */
     63 	u_quad_t udps_badlen;		/* data length larger than packet */
     64 	u_quad_t udps_noport;		/* no socket on port */
     65 	u_quad_t udps_noportbcast;	/* of above, arrived as broadcast */
     66 	u_quad_t udps_fullsock;		/* not delivered, input socket full */
     67 	u_quad_t udps_pcbhashmiss;	/* input packets missing pcb hash */
     68 					/* output statistics: */
     69 	u_quad_t udps_opackets;		/* total output packets */
     70 };
     71 
     72 /*
     73  * Names for UDP sysctl objects
     74  */
     75 #define	UDPCTL_CHECKSUM		1	/* checksum UDP packets */
     76 #define	UDPCTL_SENDSPACE	2	/* default send buffer */
     77 #define	UDPCTL_RECVSPACE	3	/* default recv buffer */
     78 #define	UDPCTL_MAXID		4
     79 
     80 #define UDPCTL_NAMES { \
     81 	{ 0, 0 }, \
     82 	{ "checksum", CTLTYPE_INT }, \
     83 	{ "sendspace", CTLTYPE_INT }, \
     84 	{ "recvspace", CTLTYPE_INT }, \
     85 }
     86 
     87 #ifdef _KERNEL
     88 struct	inpcbtable udbtable;
     89 struct	udpstat udpstat;
     90 
     91 void	 *udp_ctlinput __P((int, struct sockaddr *, void *));
     92 void	 udp_init __P((void));
     93 void	 udp_input __P((struct mbuf *, ...));
     94 int	 udp_output __P((struct mbuf *, ...));
     95 int	 udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
     96 int	 udp_usrreq __P((struct socket *,
     97 	    int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *));
     98 #endif
     99 
    100 #endif /* _NETINET_UDP_VAR_H_ */
    101