1/* $NetBSD: udp_var.h,v 1.36 2008/08/06 15:01:23 plunky 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 32 */ 33 34#ifndef _NETINET_UDP_VAR_H_ 35#define _NETINET_UDP_VAR_H_ 36 37/* 38 * UDP kernel structures and variables. 39 */ 40struct udpiphdr { 41 struct ipovly ui_i; /* overlaid ip structure */ 42 struct udphdr ui_u; /* udp header */ 43} __packed; 44#define ui_x1 ui_i.ih_x1 45#define ui_pr ui_i.ih_pr 46#define ui_len ui_i.ih_len 47#define ui_src ui_i.ih_src 48#define ui_dst ui_i.ih_dst 49#define ui_sport ui_u.uh_sport 50#define ui_dport ui_u.uh_dport 51#define ui_ulen ui_u.uh_ulen 52#define ui_sum ui_u.uh_sum 53 54/* 55 * UDP statistics. 56 * Each counter is an unsigned 64-bit value. 57 */ 58#define UDP_STAT_IPACKETS 0 /* total input packets */ 59#define UDP_STAT_HDROPS 1 /* packet shorter than header */ 60#define UDP_STAT_BADSUM 2 /* checksum error */ 61#define UDP_STAT_BADLEN 3 /* data length larger than packet */ 62#define UDP_STAT_NOPORT 4 /* no socket on port */ 63#define UDP_STAT_NOPORTBCAST 5 /* of above, arrived as broadcast */ 64#define UDP_STAT_FULLSOCK 6 /* not delivered, input socket full */ 65#define UDP_STAT_PCBHASHMISS 7 /* input packets missing PCB hash */ 66#define UDP_STAT_OPACKETS 8 /* total output packets */ 67 68#define UDP_NSTATS 9 69 70/* 71 * Names for UDP sysctl objects 72 */ 73#define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 74#define UDPCTL_SENDSPACE 2 /* default send buffer */ 75#define UDPCTL_RECVSPACE 3 /* default recv buffer */ 76#define UDPCTL_LOOPBACKCKSUM 4 /* do UDP checksum on loopback */ 77#define UDPCTL_STATS 5 /* UDP statistics */ 78#define UDPCTL_RFC6056 6 /* RFC 6056 algorithm selection */ 79#define UDPCTL_MAXID 7 80 81#define UDPCTL_NAMES { \ 82 { 0, 0 }, \ 83 { "checksum", CTLTYPE_INT }, \ 84 { "sendspace", CTLTYPE_INT }, \ 85 { "recvspace", CTLTYPE_INT }, \ 86 { "do_loopback_cksum", CTLTYPE_INT }, \ 87 { "stats", CTLTYPE_STRUCT }, \ 88 { "rfc6056", CTLTYPE_INT }, \ 89} 90 91#ifdef _KERNEL 92extern struct inpcbtable udbtable; 93 94void *udp_ctlinput(int, const struct sockaddr *, void *); 95int udp_ctloutput(int, struct socket *, struct sockopt *); 96void udp_init(void); 97void udp_input(struct mbuf *, ...); 98int udp_output(struct mbuf *, ...); 99int udp_sysctl(int *, u_int, void *, size_t *, void *, size_t); 100int udp_usrreq(struct socket *, 101 int, struct mbuf *, struct mbuf *, struct mbuf *, struct lwp *); 102 103int udp_input_checksum(int af, struct mbuf *, const struct udphdr *, int, 104 int); 105void udp_statinc(u_int); 106#endif /* _KERNEL */ 107 108#endif /* !_NETINET_UDP_VAR_H_ */ 109