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/* $OpenBSD: ip_ipcomp.h,v 1.11 2020/09/01 01:53:34 gnezdo 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 {
uint64_t ipcomps_hdrops; /* Packet shorter than header shows */
uint64_t ipcomps_nopf; /* Protocol family not supported */
uint64_t ipcomps_notdb;
uint64_t ipcomps_badkcr;
uint64_t ipcomps_qfull;
uint64_t ipcomps_noxform;
uint64_t ipcomps_wrap;
uint64_t ipcomps_input; /* Input IPcomp packets */
uint64_t ipcomps_output; /* Output IPcomp packets */
uint64_t ipcomps_invalid; /* Trying to use an invalid
* TDB */
uint64_t ipcomps_ibytes; /* Input bytes */
uint64_t ipcomps_obytes; /* Output bytes */
uint64_t ipcomps_toobig; /* Packet got larger than
* IP_MAXPACKET */
uint64_t ipcomps_pdrops; /* Packet blocked due to policy */
uint64_t ipcomps_crypto; /* "Crypto" processing failure */
uint64_t ipcomps_minlen; /* packets too short for compress */
uint64_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 }, \
}
#ifdef _KERNEL
#include <sys/percpu.h>
enum ipcomp_counters {
ipcomps_hdrops, /* Packet shorter than header shows */
ipcomps_nopf, /* Protocol family not supported */
ipcomps_notdb,
ipcomps_badkcr,
ipcomps_qfull,
ipcomps_noxform,
ipcomps_wrap,
ipcomps_input, /* Input IPcomp packets */
ipcomps_output, /* Output IPcomp packets */
ipcomps_invalid, /* Trying to use an invalid
* TDB */
ipcomps_ibytes, /* Input bytes */
ipcomps_obytes, /* Output bytes */
ipcomps_toobig, /* Packet got larger than
* IP_MAXPACKET */
ipcomps_pdrops, /* Packet blocked due to policy */
ipcomps_crypto, /* "Crypto" processing failure */
ipcomps_minlen, /* packets too short for compress */
ipcomps_outfail, /* Packet output failure */
ipcomps_ncounters
};
extern struct cpumem *ipcompcounters;
static inline void
ipcompstat_inc(enum ipcomp_counters c)
{
counters_inc(ipcompcounters, c);
}
static inline void
ipcompstat_add(enum ipcomp_counters c, uint64_t v)
{
counters_add(ipcompcounters, c, v);
}
extern int ipcomp_enable;
#endif /* _KERNEL */
#endif /* _NETINET_IP_IPCOMP_H_ */
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