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/* $OpenBSD: ip_ah.h,v 1.37 2020/09/01 01:53:34 gnezdo Exp $ */
/*
* The authors of this code are John Ioannidis (ji@tla.org),
* Angelos D. Keromytis (kermit@csd.uch.gr) and
* Niels Provos (provos@physnet.uni-hamburg.de).
*
* The original version of this code was written by John Ioannidis
* for BSD/OS in Athens, Greece, in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms, in December 1996,
* by Angelos D. Keromytis.
*
* Additional transforms and features in 1997 and 1998 by Angelos D. Keromytis
* and Niels Provos.
*
* Additional features in 1999 by Angelos D. Keromytis.
*
* Copyright (C) 1995, 1996, 1997, 1998, 1999 John Ioannidis,
* Angelos D. Keromytis and Niels Provos.
* Copyright (c) 2001 Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software with or without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
* all.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#ifndef _NETINET_IP_AH_H_
#define _NETINET_IP_AH_H_
struct ahstat {
uint64_t ahs_hdrops; /* Packet shorter than header shows */
uint64_t ahs_nopf; /* Protocol family not supported */
uint64_t ahs_notdb;
uint64_t ahs_badkcr;
uint64_t ahs_badauth;
uint64_t ahs_noxform;
uint64_t ahs_qfull;
uint64_t ahs_wrap;
uint64_t ahs_replay;
uint64_t ahs_badauthl; /* Bad authenticator length */
uint64_t ahs_input; /* Input AH packets */
uint64_t ahs_output; /* Output AH packets */
uint64_t ahs_invalid; /* Trying to use an invalid TDB */
uint64_t ahs_ibytes; /* Input bytes */
uint64_t ahs_obytes; /* Output bytes */
uint64_t ahs_toobig; /* Packet got larger than
* IP_MAXPACKET */
uint64_t ahs_pdrops; /* Packet blocked due to policy */
uint64_t ahs_crypto; /* Crypto processing failure */
uint64_t ahs_outfail; /* Packet output failure */
};
struct ah {
u_int8_t ah_nh;
u_int8_t ah_hl;
u_int16_t ah_rv;
u_int32_t ah_spi;
u_int32_t ah_rpl; /* We may not use this, if we're using old xforms */
};
/* Length of base AH header */
#define AH_FLENGTH 8
/*
* Names for AH sysctl objects
*/
#define AHCTL_ENABLE 1 /* Enable AH processing */
#define AHCTL_STATS 2 /* AH stats */
#define AHCTL_MAXID 3
#define AHCTL_NAMES { \
{ 0, 0 }, \
{ "enable", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT } \
}
#ifdef _KERNEL
#include <sys/percpu.h>
enum ahstat_counters {
ahs_hdrops, /* Packet shorter than header shows */
ahs_nopf, /* Protocol family not supported */
ahs_notdb,
ahs_badkcr,
ahs_badauth,
ahs_noxform,
ahs_qfull,
ahs_wrap,
ahs_replay,
ahs_badauthl, /* Bad authenticator length */
ahs_input, /* Input AH packets */
ahs_output, /* Output AH packets */
ahs_invalid, /* Trying to use an invalid TDB */
ahs_ibytes, /* Input bytes */
ahs_obytes, /* Output bytes */
ahs_toobig, /* Packet got larger than
* IP_MAXPACKET */
ahs_pdrops, /* Packet blocked due to policy */
ahs_crypto, /* Crypto processing failure */
ahs_outfail, /* Packet output failure */
ahs_ncounters
};
extern struct cpumem *ahcounters;
static inline void
ahstat_inc(enum ahstat_counters c)
{
counters_inc(ahcounters, c);
}
static inline void
ahstat_add(enum ahstat_counters c, uint64_t v)
{
counters_add(ahcounters, c, v);
}
extern int ah_enable;
#endif /* _KERNEL */
#endif /* _NETINET_IP_AH_H_ */
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