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 * $FreeBSD$ 35 */ 36 37 #ifndef _NETINET_UDP_VAR_H_ 38 #define _NETINET_UDP_VAR_H_ 39 40 /* 41 * UDP kernel structures and variables. 42 */ 43 struct udpiphdr { 44 struct ipovly ui_i; /* overlaid ip structure */ 45 struct udphdr ui_u; /* udp header */ 46 }; 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 udpcb { 58 /* XXX - these should be by reference so we can do options quickly */ 59 struct ip udb_ip; 60 struct udphdr udb_uh; 61 struct sockaddr_in udb_conn; 62 struct in_hostcache *udb_hc; 63 struct mbuf *udb_queue; 64 }; 65 #define inptoudpcb(inp) ((struct udpdb *)(inp)->inp_ppcb) 66 67 struct udpstat { 68 /* input statistics: */ 69 u_long udps_ipackets; /* total input packets */ 70 u_long udps_hdrops; /* packet shorter than header */ 71 u_long udps_badsum; /* checksum error */ 72 u_long udps_nosum; /* no checksum */ 73 u_long udps_badlen; /* data length larger than packet */ 74 u_long udps_noport; /* no socket on port */ 75 u_long udps_noportbcast; /* of above, arrived as broadcast */ 76 u_long udps_fullsock; /* not delivered, input socket full */ 77 u_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 78 u_long udpps_pcbhashmiss; /* input packets not for hashed pcb */ 79 /* output statistics: */ 80 u_long udps_opackets; /* total output packets */ 81 u_long udps_fastout; /* output packets on fast path */ 82 /* of no socket on port, arrived as multicast */ 83 u_long udps_noportmcast; 84 }; 85 86 /* 87 * Names for UDP sysctl objects 88 */ 89 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 90 #define UDPCTL_STATS 2 /* statistics (read-only) */ 91 #define UDPCTL_MAXDGRAM 3 /* max datagram size */ 92 #define UDPCTL_RECVSPACE 4 /* default receive buffer space */ 93 #define UDPCTL_PCBLIST 5 /* list of PCBs for UDP sockets */ 94 #define UDPCTL_MAXID 6 95 96 #define UDPCTL_NAMES { \ 97 { 0, 0 }, \ 98 { "checksum", CTLTYPE_INT }, \ 99 { "stats", CTLTYPE_STRUCT }, \ 100 { "maxdgram", CTLTYPE_INT }, \ 101 { "recvspace", CTLTYPE_INT }, \ 102 { "pcblist", CTLTYPE_STRUCT }, \ 103 } 104 105 #ifdef _KERNEL 106 SYSCTL_DECL(_net_inet_udp); 107 108 extern struct pr_usrreqs udp_usrreqs; 109 extern struct inpcbhead udb; 110 extern struct inpcbinfo udbinfo; 111 extern u_long udp_sendspace; 112 extern u_long udp_recvspace; 113 extern struct udpstat udpstat; 114 extern int log_in_vain; 115 116 void udp_ctlinput __P((int, struct sockaddr *, void *)); 117 void udp_init __P((void)); 118 void udp_input __P((struct mbuf *, int, int)); 119 120 void udp_notify __P((struct inpcb *inp, int errno)); 121 int udp_shutdown __P((struct socket *so)); 122 #endif 123 124 #endif 125