1 /* $NetBSD: udp_var.h,v 1.8 1995/03/26 20:32:42 jtc 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 /* 39 * UDP kernel structures and variables. 40 */ 41 struct udpiphdr { 42 struct ipovly ui_i; /* overlaid ip structure */ 43 struct udphdr ui_u; /* udp header */ 44 }; 45 #define ui_next ui_i.ih_next 46 #define ui_prev ui_i.ih_prev 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 struct udpstat { 58 /* input statistics: */ 59 u_long udps_ipackets; /* total input packets */ 60 u_long udps_hdrops; /* packet shorter than header */ 61 u_long udps_badsum; /* checksum error */ 62 u_long udps_badlen; /* data length larger than packet */ 63 u_long udps_noport; /* no socket on port */ 64 u_long udps_noportbcast; /* of above, arrived as broadcast */ 65 u_long udps_fullsock; /* not delivered, input socket full */ 66 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 67 /* output statistics: */ 68 u_long udps_opackets; /* total output packets */ 69 }; 70 71 /* 72 * Names for UDP sysctl objects 73 */ 74 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 75 #define UDPCTL_MAXID 2 76 77 #define UDPCTL_NAMES { \ 78 { 0, 0 }, \ 79 { "checksum", CTLTYPE_INT }, \ 80 } 81 82 #ifdef _KERNEL 83 struct inpcb udb; 84 struct udpstat udpstat; 85 86 void udp_ctlinput __P((int, struct sockaddr *, struct ip *)); 87 void udp_init __P((void)); 88 void udp_input __P((struct mbuf *, int)); 89 int udp_output __P((struct inpcb *, 90 struct mbuf *, struct mbuf *, struct mbuf *)); 91 int udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 92 int udp_usrreq __P((struct socket *, 93 int, struct mbuf *, struct mbuf *, struct mbuf *)); 94 #endif 95