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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.
1.1.1.3 ! root 13: * 3. Neither the name of the University nor the names of its contributors
1.1 root 14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: *
29: * @(#)udp.h 8.1 (Berkeley) 6/10/93
30: * udp.h,v 1.3 1994/08/21 05:27:41 paul Exp
31: */
32:
33: #ifndef _UDP_H_
34: #define _UDP_H_
35:
36: #define UDP_TTL 0x60
37: #define UDP_UDPDATALEN 16192
38:
39: extern struct socket *udp_last_so;
40:
41: /*
42: * Udp protocol header.
43: * Per RFC 768, September, 1981.
44: */
45: struct udphdr {
46: u_int16_t uh_sport; /* source port */
47: u_int16_t uh_dport; /* destination port */
48: int16_t uh_ulen; /* udp length */
49: u_int16_t uh_sum; /* udp checksum */
50: };
51:
52: /*
53: * UDP kernel structures and variables.
54: */
55: struct udpiphdr {
56: struct ipovly ui_i; /* overlaid ip structure */
57: struct udphdr ui_u; /* udp header */
58: };
1.1.1.3 ! root 59: #define ui_mbuf ui_i.ih_mbuf.mptr
1.1 root 60: #define ui_x1 ui_i.ih_x1
61: #define ui_pr ui_i.ih_pr
62: #define ui_len ui_i.ih_len
63: #define ui_src ui_i.ih_src
64: #define ui_dst ui_i.ih_dst
65: #define ui_sport ui_u.uh_sport
66: #define ui_dport ui_u.uh_dport
67: #define ui_ulen ui_u.uh_ulen
68: #define ui_sum ui_u.uh_sum
69:
1.1.1.2 root 70: #ifdef LOG_ENABLED
1.1 root 71: struct udpstat {
72: /* input statistics: */
73: u_long udps_ipackets; /* total input packets */
74: u_long udps_hdrops; /* packet shorter than header */
75: u_long udps_badsum; /* checksum error */
76: u_long udps_badlen; /* data length larger than packet */
77: u_long udps_noport; /* no socket on port */
78: u_long udps_noportbcast; /* of above, arrived as broadcast */
79: u_long udps_fullsock; /* not delivered, input socket full */
80: u_long udpps_pcbcachemiss; /* input packets missing pcb cache */
81: /* output statistics: */
82: u_long udps_opackets; /* total output packets */
83: };
1.1.1.2 root 84: #endif
1.1 root 85:
86: /*
87: * Names for UDP sysctl objects
88: */
89: #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
90: #define UDPCTL_MAXID 2
91:
1.1.1.2 root 92: #ifdef LOG_ENABLED
1.1 root 93: extern struct udpstat udpstat;
1.1.1.2 root 94: #endif
95:
1.1 root 96: extern struct socket udb;
97: struct mbuf;
98:
99: void udp_init _P((void));
100: void udp_input _P((register struct mbuf *, int));
101: int udp_output _P((struct socket *, struct mbuf *, struct sockaddr_in *));
102: int udp_attach _P((struct socket *));
103: void udp_detach _P((struct socket *));
104: struct socket * udp_listen _P((u_int, u_int32_t, u_int, int));
1.1.1.2 root 105: int udp_output2(struct socket *so, struct mbuf *m,
1.1 root 106: struct sockaddr_in *saddr, struct sockaddr_in *daddr,
107: int iptos);
108: #endif
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