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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. Neither the name of the University nor the names of its contributors
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: #ifdef PRAGMA_PACK_SUPPORTED
46: #pragma pack(1)
47: #endif
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: } PACKED__;
55:
56: #ifdef PRAGMA_PACK_SUPPORTED
1.1.1.2 ! root 57: #pragma pack(PACK_RESET)
1.1 root 58: #endif
59:
60: /*
61: * UDP kernel structures and variables.
62: */
63: struct udpiphdr {
64: struct ipovly ui_i; /* overlaid ip structure */
65: struct udphdr ui_u; /* udp header */
66: };
67: #define ui_mbuf ui_i.ih_mbuf.mptr
68: #define ui_x1 ui_i.ih_x1
69: #define ui_pr ui_i.ih_pr
70: #define ui_len ui_i.ih_len
71: #define ui_src ui_i.ih_src
72: #define ui_dst ui_i.ih_dst
73: #define ui_sport ui_u.uh_sport
74: #define ui_dport ui_u.uh_dport
75: #define ui_ulen ui_u.uh_ulen
76: #define ui_sum ui_u.uh_sum
77:
78: struct udpstat {
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:
1.1.1.2 ! root 102: void udp_init(void);
! 103: void udp_input(register struct mbuf *, int);
! 104: int udp_output(struct socket *, struct mbuf *, struct sockaddr_in *);
! 105: int udp_attach(struct socket *);
! 106: void udp_detach(struct socket *);
! 107: u_int8_t udp_tos(struct socket *);
! 108: void udp_emu(struct socket *, struct mbuf *);
! 109: struct socket * udp_listen(u_int, u_int32_t, u_int, int);
1.1 root 110: int udp_output2(struct socket *so, struct mbuf *m,
111: struct sockaddr_in *saddr, struct sockaddr_in *daddr,
112: int iptos);
113: #endif
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