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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 30 * $FreeBSD$ 31 */ 32 33 #ifndef _NETINET_UDP_VAR_H_ 34 #define _NETINET_UDP_VAR_H_ 35 36 /* 37 * UDP kernel structures and variables. 38 */ 39 struct udpiphdr { 40 struct ipovly ui_i; /* overlaid ip structure */ 41 struct udphdr ui_u; /* udp header */ 42 }; 43 #define ui_x1 ui_i.ih_x1 44 #define ui_pr ui_i.ih_pr 45 #define ui_len ui_i.ih_len 46 #define ui_src ui_i.ih_src 47 #define ui_dst ui_i.ih_dst 48 #define ui_sport ui_u.uh_sport 49 #define ui_dport ui_u.uh_dport 50 #define ui_ulen ui_u.uh_ulen 51 #define ui_sum ui_u.uh_sum 52 53 struct udpstat { 54 /* input statistics: */ 55 u_long udps_ipackets; /* total input packets */ 56 u_long udps_hdrops; /* packet shorter than header */ 57 u_long udps_badsum; /* checksum error */ 58 u_long udps_nosum; /* no checksum */ 59 u_long udps_badlen; /* data length larger than packet */ 60 u_long udps_noport; /* no socket on port */ 61 u_long udps_noportbcast; /* of above, arrived as broadcast */ 62 u_long udps_fullsock; /* not delivered, input socket full */ 63 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 64 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */ 65 /* output statistics: */ 66 u_long udps_opackets; /* total output packets */ 67 u_long udps_fastout; /* output packets on fast path */ 68 /* of no socket on port, arrived as multicast */ 69 u_long udps_noportmcast; 70 }; 71 72 /* 73 * Names for UDP sysctl objects 74 */ 75 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 76 #define UDPCTL_STATS 2 /* statistics (read-only) */ 77 #define UDPCTL_MAXDGRAM 3 /* max datagram size */ 78 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */ 79 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */ 80 #define UDPCTL_MAXID 6 81 82 #define UDPCTL_NAMES { \ 83 { 0, 0 }, \ 84 { "checksum", CTLTYPE_INT }, \ 85 { "stats", CTLTYPE_STRUCT }, \ 86 { "maxdgram", CTLTYPE_INT }, \ 87 { "recvspace", CTLTYPE_INT }, \ 88 { "pcblist", CTLTYPE_STRUCT }, \ 89 } 90 91 #ifdef _KERNEL 92 SYSCTL_DECL(_net_inet_udp); 93 94 extern struct pr_usrreqs udp_usrreqs; 95 extern struct inpcbhead udb; 96 extern struct inpcbinfo udbinfo; 97 extern u_long udp_sendspace; 98 extern u_long udp_recvspace; 99 extern struct udpstat udpstat; 100 extern int log_in_vain; 101 102 void udp_ctlinput(int, struct sockaddr *, void *); 103 void udp_init(void); 104 void udp_input(struct mbuf *, int); 105 106 struct inpcb * 107 udp_notify(struct inpcb *inp, int errno); 108 int udp_shutdown(struct socket *so); 109 #endif 110 111 #endif 112