1 /*- 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 4. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93 31 * $FreeBSD$ 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 #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 struct udpstat { 55 /* input statistics: */ 56 u_long udps_ipackets; /* total input packets */ 57 u_long udps_hdrops; /* packet shorter than header */ 58 u_long udps_badsum; /* checksum error */ 59 u_long udps_nosum; /* no checksum */ 60 u_long udps_badlen; /* data length larger than packet */ 61 u_long udps_noport; /* no socket on port */ 62 u_long udps_noportbcast; /* of above, arrived as broadcast */ 63 u_long udps_fullsock; /* not delivered, input socket full */ 64 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 65 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */ 66 /* output statistics: */ 67 u_long udps_opackets; /* total output packets */ 68 u_long udps_fastout; /* output packets on fast path */ 69 /* of no socket on port, arrived as multicast */ 70 u_long udps_noportmcast; 71 u_long udps_filtermcast; /* blocked by multicast filter */ 72 }; 73 74 /* 75 * Names for UDP sysctl objects. 76 */ 77 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 78 #define UDPCTL_STATS 2 /* statistics (read-only) */ 79 #define UDPCTL_MAXDGRAM 3 /* max datagram size */ 80 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */ 81 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */ 82 #define UDPCTL_MAXID 6 83 84 #define UDPCTL_NAMES { \ 85 { 0, 0 }, \ 86 { "checksum", CTLTYPE_INT }, \ 87 { "stats", CTLTYPE_STRUCT }, \ 88 { "maxdgram", CTLTYPE_INT }, \ 89 { "recvspace", CTLTYPE_INT }, \ 90 { "pcblist", CTLTYPE_STRUCT }, \ 91 } 92 93 #ifdef _KERNEL 94 SYSCTL_DECL(_net_inet_udp); 95 96 extern struct pr_usrreqs udp_usrreqs; 97 extern struct inpcbhead udb; 98 extern struct inpcbinfo udbinfo; 99 extern u_long udp_sendspace; 100 extern u_long udp_recvspace; 101 extern struct udpstat udpstat; 102 extern int udp_blackhole; 103 extern int udp_log_in_vain; 104 105 void udp_ctlinput(int, struct sockaddr *, void *); 106 void udp_init(void); 107 void udp_input(struct mbuf *, int); 108 struct inpcb *udp_notify(struct inpcb *inp, int errno); 109 int udp_shutdown(struct socket *so); 110 #endif 111 112 #endif 113