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/* $OpenBSD: ip_ipcomp.h,v 1.8 2017/02/07 18:18:16 bluhm Exp $ */
/*
* Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* IP payload compression protocol (IPComp), see RFC 2393 */
#ifndef _NETINET_IP_IPCOMP_H_
#define _NETINET_IP_IPCOMP_H_
struct ipcompstat {
u_int32_t ipcomps_hdrops; /* Packet shorter than header shows */
u_int32_t ipcomps_nopf; /* Protocol family not supported */
u_int32_t ipcomps_notdb;
u_int32_t ipcomps_badkcr;
u_int32_t ipcomps_qfull;
u_int32_t ipcomps_noxform;
u_int32_t ipcomps_wrap;
u_int32_t ipcomps_input; /* Input IPcomp packets */
u_int32_t ipcomps_output; /* Output IPcomp packets */
u_int32_t ipcomps_invalid; /* Trying to use an invalid
* TDB */
u_int64_t ipcomps_ibytes; /* Input bytes */
u_int64_t ipcomps_obytes; /* Output bytes */
u_int32_t ipcomps_toobig; /* Packet got larger than
* IP_MAXPACKET */
u_int32_t ipcomps_pdrops; /* Packet blocked due to policy */
u_int32_t ipcomps_crypto; /* "Crypto" processing failure */
u_int32_t ipcomps_minlen; /* packets too short for compress */
u_int32_t ipcomps_outfail; /* Packet output failure */
};
/* IPCOMP header */
struct ipcomp {
u_int8_t ipcomp_nh; /* Next header */
u_int8_t ipcomp_flags; /* Flags: reserved field: 0 */
u_int16_t ipcomp_cpi; /* Compression Parameter Index,
* Network order */
};
/* Length of IPCOMP header */
#define IPCOMP_HLENGTH 4
/*
* Names for IPCOMP sysctl objects
*/
#define IPCOMPCTL_ENABLE 1 /* Enable COMP processing */
#define IPCOMPCTL_STATS 2 /* COMP stats */
#define IPCOMPCTL_MAXID 3
#define IPCOMPCTL_NAMES { \
{ 0, 0 }, \
{ "enable", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT }, \
}
#define IPCOMPCTL_VARS { \
NULL, \
&ipcomp_enable, \
NULL \
}
#ifdef _KERNEL
extern int ipcomp_enable;
extern struct ipcompstat ipcompstat;
#endif /* _KERNEL */
#endif /* _NETINET_IP_IPCOMP_H_ */
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