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1.1 root 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: u_int16_t uh_sport; /* source port */
51: u_int16_t uh_dport; /* destination port */
52: int16_t uh_ulen; /* udp length */
53: u_int16_t uh_sum; /* udp checksum */
54: };
55:
56: /*
57: * UDP kernel structures and variables.
58: */
59: struct udpiphdr {
60: struct ipovly ui_i; /* overlaid ip structure */
61: struct udphdr ui_u; /* udp header */
62: };
63: #define ui_next ui_i.ih_next
64: #define ui_prev ui_i.ih_prev
65: #define ui_x1 ui_i.ih_x1
66: #define ui_pr ui_i.ih_pr
67: #define ui_len ui_i.ih_len
68: #define ui_src ui_i.ih_src
69: #define ui_dst ui_i.ih_dst
70: #define ui_sport ui_u.uh_sport
71: #define ui_dport ui_u.uh_dport
72: #define ui_ulen ui_u.uh_ulen
73: #define ui_sum ui_u.uh_sum
74:
1.1.1.2 ! root 75: #ifdef LOG_ENABLED
1.1 root 76: struct udpstat {
77: /* input statistics: */
78: u_long udps_ipackets; /* total input packets */
79: u_long udps_hdrops; /* packet shorter than header */
80: u_long udps_badsum; /* checksum error */
81: u_long udps_badlen; /* data length larger than packet */
82: u_long udps_noport; /* no socket on port */
83: u_long udps_noportbcast; /* of above, arrived as broadcast */
84: u_long udps_fullsock; /* not delivered, input socket full */
85: u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
86: /* output statistics: */
87: u_long udps_opackets; /* total output packets */
88: };
1.1.1.2 ! root 89: #endif
1.1 root 90:
91: /*
92: * Names for UDP sysctl objects
93: */
94: #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
95: #define UDPCTL_MAXID 2
96:
1.1.1.2 ! root 97: #ifdef LOG_ENABLED
1.1 root 98: extern struct udpstat udpstat;
1.1.1.2 ! root 99: #endif
! 100:
1.1 root 101: extern struct socket udb;
102: struct mbuf;
103:
104: void udp_init _P((void));
105: void udp_input _P((register struct mbuf *, int));
106: int udp_output _P((struct socket *, struct mbuf *, struct sockaddr_in *));
107: int udp_attach _P((struct socket *));
108: void udp_detach _P((struct socket *));
109: struct socket * udp_listen _P((u_int, u_int32_t, u_int, int));
1.1.1.2 ! root 110: int udp_output2(struct socket *so, struct mbuf *m,
1.1 root 111: struct sockaddr_in *saddr, struct sockaddr_in *daddr,
112: int iptos);
113: #endif
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