1 /* $NetBSD: udp_var.h,v 1.48 2021/02/03 11:53:43 roy 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 */ 40 struct udpiphdr { 41 struct ipovly ui_i; /* overlaid ip structure */ 42 struct udphdr ui_u; /* udp header */ 43 }; 44 #ifdef CTASSERT 45 CTASSERT(sizeof(struct udpiphdr) == 28); 46 #endif 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 /* 58 * UDP statistics. 59 * Each counter is an unsigned 64-bit value. 60 */ 61 #define UDP_STAT_IPACKETS 0 /* total input packets */ 62 #define UDP_STAT_HDROPS 1 /* packet shorter than header */ 63 #define UDP_STAT_BADSUM 2 /* checksum error */ 64 #define UDP_STAT_BADLEN 3 /* data length larger than packet */ 65 #define UDP_STAT_NOPORT 4 /* no socket on port */ 66 #define UDP_STAT_NOPORTBCAST 5 /* of above, arrived as broadcast */ 67 #define UDP_STAT_FULLSOCK 6 /* not delivered, input socket full */ 68 #define UDP_STAT_PCBHASHMISS 7 /* input packets missing PCB hash */ 69 #define UDP_STAT_OPACKETS 8 /* total output packets */ 70 71 #define UDP_NSTATS 9 72 73 /* 74 * Names for UDP sysctl objects 75 */ 76 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 77 #define UDPCTL_SENDSPACE 2 /* default send buffer */ 78 #define UDPCTL_RECVSPACE 3 /* default recv buffer */ 79 #define UDPCTL_LOOPBACKCKSUM 4 /* do UDP checksum on loopback */ 80 #define UDPCTL_STATS 5 /* UDP statistics */ 81 82 #ifdef _KERNEL 83 84 extern struct inpcbtable udbtable; 85 extern const struct pr_usrreqs udp_usrreqs; 86 87 void *udp_ctlinput(int, const struct sockaddr *, void *); 88 int udp_ctloutput(int, struct socket *, struct sockopt *); 89 void udp_init(void); 90 void udp_init_common(void); 91 void udp_input(struct mbuf *, int, int); 92 int udp_output(struct mbuf *, struct inpcb *, struct mbuf *, struct lwp *); 93 int udp_send(struct socket *, struct mbuf *, struct sockaddr *, 94 struct mbuf *, struct lwp *); 95 int udp_input_checksum(int af, struct mbuf *, const struct udphdr *, int, int); 96 void udp_statinc(u_int); 97 #endif /* _KERNEL */ 98 99 #endif /* !_NETINET_UDP_VAR_H_ */ 100