1 /* $OpenBSD: ip_ipcomp.h,v 1.6 2004/02/17 12:07:45 markus Exp $ */
2
3 /*
4 * Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
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. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 /* IP payload compression protocol (IPComp), see RFC 2393 */
31
32 #ifndef _NETINET_IP_IPCOMP_H_
33 #define _NETINET_IP_IPCOMP_H_
34
35 struct ipcompstat {
36 u_int32_t ipcomps_hdrops; /* Packet shorter than header shows */
37 u_int32_t ipcomps_nopf; /* Protocol family not supported */
38 u_int32_t ipcomps_notdb;
39 u_int32_t ipcomps_badkcr;
40 u_int32_t ipcomps_qfull;
41 u_int32_t ipcomps_noxform;
42 u_int32_t ipcomps_wrap;
43 u_int32_t ipcomps_input; /* Input IPcomp packets */
44 u_int32_t ipcomps_output; /* Output IPcomp packets */
45 u_int32_t ipcomps_invalid; /* Trying to use an invalid
46 * TDB */
47 u_int64_t ipcomps_ibytes; /* Input bytes */
48 u_int64_t ipcomps_obytes; /* Output bytes */
49 u_int32_t ipcomps_toobig; /* Packet got larger than
50 * IP_MAXPACKET */
51 u_int32_t ipcomps_pdrops; /* Packet blocked due to policy */
52 u_int32_t ipcomps_crypto; /* "Crypto" processing failure */
53 u_int32_t ipcomps_minlen; /* packets too short for compress */
54 };
55
56 /* IPCOMP header */
57 struct ipcomp {
58 u_int8_t ipcomp_nh; /* Next header */
59 u_int8_t ipcomp_flags; /* Flags: reserved field: 0 */
60 u_int16_t ipcomp_cpi; /* Compression Parameter Index,
61 * Network order */
62 };
63
64 /* Length of IPCOMP header */
65 #define IPCOMP_HLENGTH 4
66
67 /*
68 * Names for IPCOMP sysctl objects
69 */
70 #define IPCOMPCTL_ENABLE 1 /* Enable COMP processing */
71 #define IPCOMPCTL_MAXID 2
72
73 #define IPCOMPCTL_NAMES { \
74 { 0, 0 }, \
75 { "enable", CTLTYPE_INT}, \
76 }
77
78 #define IPCOMPCTL_VARS { \
79 NULL, \
80 &ipcomp_enable, \
81 }
82
83 #ifdef _KERNEL
84 extern int ipcomp_enable;
85 extern struct ipcompstat ipcompstat;
86 #endif /* _KERNEL */
87 #endif /* _NETINET_IP_IPCOMP_H_ */