udp_var.h revision 1.17 1 /* $NetBSD: udp_var.h,v 1.17 1999/11/20 00:38:00 thorpej Exp $ */
2
3 /*
4 * Copyright (c) 1982, 1986, 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the University of
18 * California, Berkeley and its contributors.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 * @(#)udp_var.h 8.1 (Berkeley) 6/10/93
36 */
37
38 #ifndef _NETINET_UDP_VAR_H_
39 #define _NETINET_UDP_VAR_H_
40
41 /*
42 * UDP kernel structures and variables.
43 */
44 struct udpiphdr {
45 struct ipovly ui_i; /* overlaid ip structure */
46 struct udphdr ui_u; /* udp header */
47 } __attribute__((__packed__));
48 #define ui_x1 ui_i.ih_x1
49 #define ui_pr ui_i.ih_pr
50 #define ui_len ui_i.ih_len
51 #define ui_src ui_i.ih_src
52 #define ui_dst ui_i.ih_dst
53 #define ui_sport ui_u.uh_sport
54 #define ui_dport ui_u.uh_dport
55 #define ui_ulen ui_u.uh_ulen
56 #define ui_sum ui_u.uh_sum
57
58 struct udpstat {
59 /* input statistics: */
60 u_quad_t udps_ipackets; /* total input packets */
61 u_quad_t udps_hdrops; /* packet shorter than header */
62 u_quad_t udps_badsum; /* checksum error */
63 u_quad_t udps_badlen; /* data length larger than packet */
64 u_quad_t udps_noport; /* no socket on port */
65 u_quad_t udps_noportbcast; /* of above, arrived as broadcast */
66 u_quad_t udps_fullsock; /* not delivered, input socket full */
67 u_quad_t udps_pcbhashmiss; /* input packets missing pcb hash */
68 /* output statistics: */
69 u_quad_t udps_opackets; /* total output packets */
70 };
71
72 /*
73 * Names for UDP sysctl objects
74 */
75 #define UDPCTL_CHECKSUM 1 /* checksum UDP packets */
76 #define UDPCTL_SENDSPACE 2 /* default send buffer */
77 #define UDPCTL_RECVSPACE 3 /* default recv buffer */
78 #define UDPCTL_MAXID 4
79
80 #define UDPCTL_NAMES { \
81 { 0, 0 }, \
82 { "checksum", CTLTYPE_INT }, \
83 { "sendspace", CTLTYPE_INT }, \
84 { "recvspace", CTLTYPE_INT }, \
85 }
86
87 #ifdef _KERNEL
88 struct inpcbtable udbtable;
89 struct udpstat udpstat;
90
91 void *udp_ctlinput __P((int, struct sockaddr *, void *));
92 void udp_init __P((void));
93 void udp_input __P((struct mbuf *, ...));
94 int udp_output __P((struct mbuf *, ...));
95 int udp_sysctl __P((int *, u_int, void *, size_t *, void *, size_t));
96 int udp_usrreq __P((struct socket *,
97 int, struct mbuf *, struct mbuf *, struct mbuf *, struct proc *));
98 #endif
99
100 #endif /* _NETINET_UDP_VAR_H_ */
101