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 */ 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_next ui_i.ih_next 44 #define ui_prev ui_i.ih_prev 45 #define ui_x1 ui_i.ih_x1 46 #define ui_pr ui_i.ih_pr 47 #define ui_len ui_i.ih_len 48 #define ui_src ui_i.ih_src 49 #define ui_dst ui_i.ih_dst 50 #define ui_sport ui_u.uh_sport 51 #define ui_dport ui_u.uh_dport 52 #define ui_ulen ui_u.uh_ulen 53 #define ui_sum ui_u.uh_sum 54 55 struct udpstat { 56 /* input statistics: */ 57 n_long udps_ipackets; /* total input packets */ 58 n_long udps_hdrops; /* packet shorter than header */ 59 n_long udps_badsum; /* checksum error */ 60 n_long udps_badlen; /* data length larger than packet */ 61 n_long udps_noport; /* no socket on port */ 62 n_long udps_noportbcast; /* of above, arrived as broadcast */ 63 n_long udps_fullsock; /* not delivered, input socket full */ 64 n_long udpps_pcbcachemiss; /* input packets missing pcb cache */ 65 /* output statistics: */ 66 n_long udps_opackets; /* total output packets */ 67 }; 68 69 /* 70 * Names for UDP sysctl objects 71 */ 72 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */ 73 #define UDPCTL_MAXID 2 74 75 #define UDPCTL_NAMES { \ 76 { 0, 0 }, \ 77 { "checksum", CTLTYPE_INT }, \ 78 } 79 80 #ifdef KERNEL 81 struct inpcb udb; 82 struct udpstat udpstat; 83 84 void udp_ctlinput __P((int, struct sockaddr *, struct ip *)); 85 void udp_init __P((void)); 86 void udp_input __P((struct mbuf *, int)); 87 int udp_output __P((struct inpcb *, 88 struct mbuf *, struct mbuf *, struct mbuf *)); 89 int udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t)); 90 int udp_usrreq __P((struct socket *, 91 int, struct mbuf *, struct mbuf *, struct mbuf *)); 92 #endif 93