udp_var.h revision 16143
1/* 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. 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 8.1 (Berkeley) 6/10/93 34 * $Id: udp_var.h,v 1.8 1995/12/16 02:14:22 bde Exp $ 35 */ 36 37#ifndef _NETINET_UDP_VAR_H_ 38#define _NETINET_UDP_VAR_H_ 39 40/* 41 * UDP kernel structures and variables. 42 */ 43struct udpiphdr { 44 struct ipovly ui_i; /* overlaid ip structure */ 45 struct udphdr ui_u; /* udp header */ 46}; 47#define ui_next ui_i.ih_next 48#define ui_prev ui_i.ih_prev 49#define ui_x1 ui_i.ih_x1 50#define ui_pr ui_i.ih_pr 51#define ui_len ui_i.ih_len 52#define ui_src ui_i.ih_src 53#define ui_dst ui_i.ih_dst 54#define ui_sport ui_u.uh_sport 55#define ui_dport ui_u.uh_dport 56#define ui_ulen ui_u.uh_ulen 57#define ui_sum ui_u.uh_sum 58 59struct udpstat { 60 /* input statistics: */ 61 u_long udps_ipackets; /* total input packets */ 62 u_long udps_hdrops; /* packet shorter than header */ 63 u_long udps_badsum; /* checksum error */ 64 u_long udps_badlen; /* data length larger than packet */ 65 u_long udps_noport; /* no socket on port */ 66 u_long udps_noportbcast; /* of above, arrived as broadcast */ 67 u_long udps_fullsock; /* not delivered, input socket full */ 68 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 69 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */ 70 /* output statistics: */ 71 u_long udps_opackets; /* total output packets */ 72}; 73 74/* 75 * Names for UDP sysctl objects 76 */ 77#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 78#define UDPCTL_STATS 2 /* statistics (read-only) */ 79#define UDPCTL_MAXDGRAM 3 /* max datagram size */ 80#define UDPCTL_RECVSPACE 4 /* default receive buffer space */ 81#define UDPCTL_MAXID 5 82 83#define UDPCTL_NAMES { \ 84 { 0, 0 }, \ 85 { "checksum", CTLTYPE_INT }, \ 86 { "stats", CTLTYPE_STRUCT }, \ 87 { "maxdgram", CTLTYPE_INT }, \ 88 { "recvspace", CTLTYPE_INT }, \ 89} 90 91#ifdef KERNEL 92extern struct inpcbhead udb; 93extern struct inpcbinfo udbinfo; 94extern struct udpstat udpstat; 95 96void udp_ctlinput __P((int, struct sockaddr *, void *)); 97void udp_init __P((void)); 98void udp_input __P((struct mbuf *, int)); 99int udp_usrreq __P((struct socket *, 100 int, struct mbuf *, struct mbuf *, struct mbuf *)); 101#endif 102 103#endif 104