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udp_var.h revision 1.2 
      1 /*
      2  * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	@(#)udp_var.h	7.7 (Berkeley) 6/28/90
     34  */
     35 
     36 #ifndef _NETINET_UDP_VAR_H_
     37 #define _NETINET_UDP_VAR_H_
     38 
     39 /*
     40  * UDP kernel structures and variables.
     41  */
     42 struct	udpiphdr {
     43 	struct 	ipovly ui_i;		/* overlaid ip structure */
     44 	struct	udphdr ui_u;		/* udp header */
     45 };
     46 #define	ui_next		ui_i.ih_next
     47 #define	ui_prev		ui_i.ih_prev
     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 	int	udps_ipackets;		/* total input packets */
     61 	int	udps_hdrops;		/* packet shorter than header */
     62 	int	udps_badsum;		/* checksum error */
     63 	int	udps_badlen;		/* data length larger than packet */
     64 	int	udps_noport;		/* no socket on port */
     65 	int	udps_noportbcast;	/* of above, arrived as broadcast */
     66 	int	udps_fullsock;		/* not delivered, input socket full */
     67 	int	udpps_pcbcachemiss;	/* input packets missing pcb cache */
     68 				/* output statistics: */
     69 	int	udps_opackets;		/* total output packets */
     70 };
     71 
     72 #define	UDP_TTL		30	/* default time to live for UDP packets */
     73 
     74 #ifdef KERNEL
     75 struct	inpcb udb;
     76 struct	udpstat udpstat;
     77 #endif
     78 
     79 #endif /* !_NETINET_UDP_VAR_H_ */
     80