Annotation of sys/netinet/ip_ipip.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: ip_ipip.h,v 1.5 2002/06/09 16:26:10 itojun Exp $ */
2: /*
3: * The authors of this code are John Ioannidis (ji@tla.org),
4: * Angelos D. Keromytis (kermit@csd.uch.gr) and
5: * Niels Provos (provos@physnet.uni-hamburg.de).
6: *
7: * The original version of this code was written by John Ioannidis
8: * for BSD/OS in Athens, Greece, in November 1995.
9: *
10: * Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
11: * by Angelos D. Keromytis.
12: *
13: * Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
14: * and Niels Provos.
15: *
16: * Additional features in 1999 by Angelos D. Keromytis.
17: *
18: * Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
19: * Angelos D. Keromytis and Niels Provos.
20: * Copyright (c) 2001, Angelos D. Keromytis.
21: *
22: * Permission to use, copy, and modify this software with or without fee
23: * is hereby granted, provided that this entire notice is included in
24: * all copies of any software which is or includes a copy or
25: * modification of this software.
26: * You may use this code under the GNU public license if you so wish. Please
27: * contribute changes back to the authors under this freer than GPL license
28: * so that we may further the use of strong encryption without limitations to
29: * all.
30: *
31: * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
32: * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
33: * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
34: * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
35: * PURPOSE.
36: */
37:
38: #ifndef _NETINET_IPIP_H_
39: #define _NETINET_IPIP_H_
40:
41: /*
42: * IP-inside-IP processing.
43: * Not quite all the functionality of RFC-1853, but the main idea is there.
44: */
45:
46: struct ipipstat
47: {
48: u_int32_t ipips_ipackets; /* total input packets */
49: u_int32_t ipips_opackets; /* total output packets */
50: u_int32_t ipips_hdrops; /* packet shorter than header shows */
51: u_int32_t ipips_qfull;
52: u_int64_t ipips_ibytes;
53: u_int64_t ipips_obytes;
54: u_int32_t ipips_pdrops; /* packet dropped due to policy */
55: u_int32_t ipips_spoof; /* IP spoofing attempts */
56: u_int32_t ipips_family; /* Protocol family mismatch */
57: u_int32_t ipips_unspec; /* Missing tunnel endpoint address */
58: };
59:
60: #define IP4_DEFAULT_TTL 0
61: #define IP4_SAME_TTL -1
62:
63: /*
64: * Names for IPIP sysctl objects
65: */
66: #define IPIPCTL_ALLOW 1 /* accept incoming IP4 packets */
67: #define IPIPCTL_MAXID 2
68:
69: #define IPIPCTL_NAMES { \
70: { 0, 0 }, \
71: { "allow", CTLTYPE_INT }, \
72: }
73:
74: #ifdef _KERNEL
75: int ipip_sysctl(int *, u_int, void *, size_t *, void *, size_t);
76:
77: extern int ipip_allow;
78: extern struct ipipstat ipipstat;
79: #endif /* _KERNEL */
80: #endif /* _NETINET_IPIP_H_ */
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