| 1 | /*
|
|---|
| 2 | * Copyright (c) 1982, 1986, 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.h 8.1 (Berkeley) 6/10/93
|
|---|
| 34 | * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 | #ifndef _UDP_H_
|
|---|
| 38 | #define _UDP_H_
|
|---|
| 39 |
|
|---|
| 40 | #define UDP_TTL 0x60
|
|---|
| 41 | #define UDP_UDPDATALEN 16192
|
|---|
| 42 |
|
|---|
| 43 | extern struct socket *udp_last_so;
|
|---|
| 44 |
|
|---|
| 45 | /*
|
|---|
| 46 | * Udp protocol header.
|
|---|
| 47 | * Per RFC 768, September, 1981.
|
|---|
| 48 | */
|
|---|
| 49 | struct udphdr
|
|---|
| 50 | {
|
|---|
| 51 | uint16_t uh_sport; /* source port */
|
|---|
| 52 | uint16_t uh_dport; /* destination port */
|
|---|
| 53 | int16_t uh_ulen; /* udp length */
|
|---|
| 54 | uint16_t uh_sum; /* udp checksum */
|
|---|
| 55 | };
|
|---|
| 56 |
|
|---|
| 57 | /*
|
|---|
| 58 | * UDP kernel structures and variables.
|
|---|
| 59 | */
|
|---|
| 60 | struct udpiphdr
|
|---|
| 61 | {
|
|---|
| 62 | struct ipovly ui_i; /* overlaid ip structure */
|
|---|
| 63 | struct udphdr ui_u; /* udp header */
|
|---|
| 64 | };
|
|---|
| 65 | #define ui_next ui_i.ih_next
|
|---|
| 66 | #define ui_prev ui_i.ih_prev
|
|---|
| 67 | #define ui_x1 ui_i.ih_x1
|
|---|
| 68 | #define ui_pr ui_i.ih_pr
|
|---|
| 69 | #define ui_len ui_i.ih_len
|
|---|
| 70 | #define ui_src ui_i.ih_src
|
|---|
| 71 | #define ui_dst ui_i.ih_dst
|
|---|
| 72 | #define ui_sport ui_u.uh_sport
|
|---|
| 73 | #define ui_dport ui_u.uh_dport
|
|---|
| 74 | #define ui_ulen ui_u.uh_ulen
|
|---|
| 75 | #define ui_sum ui_u.uh_sum
|
|---|
| 76 |
|
|---|
| 77 | struct udpstat_t
|
|---|
| 78 | {
|
|---|
| 79 | /* input statistics: */
|
|---|
| 80 | u_long udps_ipackets; /* total input packets */
|
|---|
| 81 | u_long udps_hdrops; /* packet shorter than header */
|
|---|
| 82 | u_long udps_badsum; /* checksum error */
|
|---|
| 83 | u_long udps_badlen; /* data length larger than packet */
|
|---|
| 84 | u_long udps_noport; /* no socket on port */
|
|---|
| 85 | u_long udps_noportbcast; /* of above, arrived as broadcast */
|
|---|
| 86 | u_long udps_fullsock; /* not delivered, input socket full */
|
|---|
| 87 | u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
|
|---|
| 88 | /* output statistics: */
|
|---|
| 89 | u_long udps_opackets; /* total output packets */
|
|---|
| 90 | };
|
|---|
| 91 |
|
|---|
| 92 | /*
|
|---|
| 93 | * Names for UDP sysctl objects
|
|---|
| 94 | */
|
|---|
| 95 | #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
|
|---|
| 96 | #define UDPCTL_MAXID 2
|
|---|
| 97 |
|
|---|
| 98 | extern struct udpstat udpstat;
|
|---|
| 99 | extern struct socket udb;
|
|---|
| 100 | struct mbuf;
|
|---|
| 101 |
|
|---|
| 102 | void udp_init _P((PNATState));
|
|---|
| 103 | void udp_input _P((PNATState, register struct mbuf *, int));
|
|---|
| 104 | int udp_output _P((PNATState, struct socket *, struct mbuf *, struct sockaddr_in *));
|
|---|
| 105 | int udp_attach _P((PNATState, struct socket *));
|
|---|
| 106 | void udp_detach _P((PNATState, struct socket *));
|
|---|
| 107 | u_int8_t udp_tos _P((struct socket *));
|
|---|
| 108 | void udp_emu _P((PNATState, struct socket *, struct mbuf *));
|
|---|
| 109 | struct socket * udp_listen _P((PNATState, u_int, u_int32_t, u_int, int));
|
|---|
| 110 | int udp_output2(PNATState pData, struct socket *so, struct mbuf *m,
|
|---|
| 111 | struct sockaddr_in *saddr, struct sockaddr_in *daddr,
|
|---|
| 112 | int iptos);
|
|---|
| 113 |
|
|---|
| 114 | #endif
|
|---|
