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 * $FreeBSD: src/sys/netinet/udp_var.h,v 1.22.2.1 2001/02/18 07:12:25 luigi Exp $ 35 * $DragonFly: src/sys/netinet/udp_var.h,v 1.2 2003/06/17 04:28:51 dillon Exp $ 36 */ 37 38 #ifndef _NETINET_UDP_VAR_H_ 39 #define _NETINET_UDP_VAR_H_ 40 41 /* 42 * UDP kernel structures and variables. 43 */ 44 struct udpiphdr { 45 struct ipovly ui_i; /* overlaid ip structure */ 46 struct udphdr ui_u; /* udp header */ 47 }; 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 u_long udps_ipackets; /* total input packets */ 61 u_long udps_hdrops; /* packet shorter than header */ 62 u_long udps_badsum; /* checksum error */ 63 u_long udps_nosum; /* no checksum */ 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 u_long udps_fastout; /* output packets on fast path */ 73 /* of no socket on port, arrived as multicast */ 74 u_long udps_noportmcast; 75 }; 76 77 /* 78 * Names for UDP sysctl objects 79 */ 80 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 81 #define UDPCTL_STATS 2 /* statistics (read-only) */ 82 #define UDPCTL_MAXDGRAM 3 /* max datagram size */ 83 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */ 84 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */ 85 #define UDPCTL_MAXID 6 86 87 #define UDPCTL_NAMES { \ 88 { 0, 0 }, \ 89 { "checksum", CTLTYPE_INT }, \ 90 { "stats", CTLTYPE_STRUCT }, \ 91 { "maxdgram", CTLTYPE_INT }, \ 92 { "recvspace", CTLTYPE_INT }, \ 93 { "pcblist", CTLTYPE_STRUCT }, \ 94 } 95 96 #ifdef _KERNEL 97 SYSCTL_DECL(_net_inet_udp); 98 99 extern struct pr_usrreqs udp_usrreqs; 100 extern struct inpcbhead udb; 101 extern struct inpcbinfo udbinfo; 102 extern u_long udp_sendspace; 103 extern u_long udp_recvspace; 104 extern struct udpstat udpstat; 105 extern int log_in_vain; 106 107 void udp_ctlinput __P((int, struct sockaddr *, void *)); 108 void udp_init __P((void)); 109 void udp_input __P((struct mbuf *, int, int)); 110 111 void udp_notify __P((struct inpcb *inp, int errno)); 112 int udp_shutdown __P((struct socket *so)); 113 #endif 114 115 #endif 116