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NetBSD/usr.bin/netstat/fast_ipsec.c

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/* $NetBSD: fast_ipsec.c,v 1.11 2008/04/24 04:09:27 thorpej Exp $ */
/* $FreeBSD: src/tools/tools/crypto/ipsecstats.c,v 1.1.4.1 2003/06/03 00:13:13 sam Exp $ */
/*-
* Copyright (c) 2003, 2004 Jonathan Stone
* Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
* All rights reserved.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD: src/tools/tools/crypto/ipsecstats.c,v 1.1.4.1 2003/06/03 00:13:13 sam Exp $
*/
#include <sys/cdefs.h>
#ifndef lint
#ifdef __NetBSD__
__RCSID("$NetBSD: fast_ipsec.c,v 1.11 2008/04/24 04:09:27 thorpej Exp $");
#endif
#endif /* not lint*/
/* Kernel headers required, but not included, by netstat.h */
#include <sys/types.h>
#include <sys/socket.h>
/* Kernel headers for sysctl(3). */
#include <sys/param.h>
#include <sys/sysctl.h>
/* Kernel headers for FAST_IPSEC statistics */
#include <net/pfkeyv2.h>
#include <netipsec/esp_var.h>
#include <netipsec/ah_var.h>
#include <netipsec/ipip_var.h>
#include <netipsec/ipcomp_var.h>
#include <netipsec/ipsec_var.h>
#include <netipsec/keydb.h>
#include <machine/int_fmtio.h>
#include <kvm.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "netstat.h"
/*
* Cache the check to see if we have fast_ipsec so that we don't
* have to go to the kernel repeatedly.
*/
static int
have_fast_ipsec(void)
{
static int haveit = -1;
if (haveit == -1) {
if (sysctlbyname("net.inet.ipsec.ipsecstats", NULL, NULL,
NULL, 0) == -1)
haveit = 0;
else
haveit = 1;
}
return (haveit);
}
/*
* Dispatch between fetching and printing (KAME) IPsec statistics,
* and FAST_IPSEC statistics, so the rest of netstat need not know
* about the vagaries of the two implementations.
*/
void
ipsec_switch(u_long off, char * name)
{
if (have_fast_ipsec())
return fast_ipsec_stats(off, name);
return ipsec_stats(off, name);
}
/*
* Table-driven mapping from SADB algorithm codes to string names.
*/
struct alg {
int a;
const char *name;
};
static const struct alg aalgs[] = {
{ SADB_AALG_NONE, "none", },
{ SADB_AALG_MD5HMAC, "hmac-md5", },
{ SADB_AALG_SHA1HMAC, "hmac-sha1", },
{ SADB_X_AALG_MD5, "md5", },
{ SADB_X_AALG_SHA, "sha", },
{ SADB_X_AALG_NULL, "null", },
{ SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
{ SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
{ SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
};
static const struct alg espalgs[] = {
{ SADB_EALG_NONE, "none", },
{ SADB_EALG_DESCBC, "des-cbc", },
{ SADB_EALG_3DESCBC, "3des-cbc", },
{ SADB_EALG_NULL, "null", },
{ SADB_X_EALG_CAST128CBC, "cast128-cbc", },
{ SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
{ SADB_X_EALG_RIJNDAELCBC, "aes-cbc", },
};
static const struct alg ipcompalgs[] = {
{ SADB_X_CALG_NONE, "none", },
{ SADB_X_CALG_OUI, "oui", },
{ SADB_X_CALG_DEFLATE, "deflate", },
{ SADB_X_CALG_LZS, "lzs", },
};
#define N(a) (sizeof(a)/sizeof(a[0]))
static const char*
algname(int a, const struct alg algs[], int nalgs)
{
static char buf[80];
int i;
for (i = 0; i < nalgs; i++)
if (algs[i].a == a)
return algs[i].name;
snprintf(buf, sizeof(buf), "alg#%u", a);
return buf;
}
/*
* Print the fast_ipsec statistics.
* Since NetBSD's netstat(1) seems not to find us for "netstat -s",
* but does(?) find KAME, be prepared to be called explicitly from
* netstat's main program for "netstat -s"; but silently do nothing
* if that happens when we are running on KAME IPsec.
*/
void
fast_ipsec_stats(u_long off, char *name)
{
uint64_t ipsecstats[IPSEC_NSTATS];
uint64_t ahstats[AH_NSTATS];
uint64_t espstats[ESP_NSTATS];
uint64_t ipcs[IPCOMP_NSTATS];
uint64_t ipips[IPIP_NSTATS];
int status;
size_t slen;
int i;
if (! use_sysctl) {
warnx("IPsec stats not available via KVM.");
return;
}
memset(ipsecstats, 0, sizeof(ipsecstats));
memset(ahstats, 0, sizeof(ahstats));
memset(espstats, 0, sizeof(espstats));
memset(ipcs, 0, sizeof(ipcs));
memset(ipips, 0, sizeof(ipips));
/* silence check */
if (!have_fast_ipsec())
return;
slen = sizeof(ipsecstats);
status = sysctlbyname("net.inet.ipsec.ipsecstats", ipsecstats, &slen,
NULL, 0);
if (status < 0 && errno != ENOMEM)
err(1, "net.inet.ipsec.ipsecstats");
slen = sizeof (ahstats);
status = sysctlbyname("net.inet.ah.ah_stats", ahstats, &slen, NULL, 0);
if (status < 0 && errno != ENOMEM)
err(1, "net.inet.ah.ah_stats");
slen = sizeof (espstats);
status = sysctlbyname("net.inet.esp.esp_stats", espstats, &slen, NULL, 0);
if (status < 0 && errno != ENOMEM)
err(1, "net.inet.esp.esp_stats");
slen = sizeof(ipcs);
status = sysctlbyname("net.inet.ipcomp.ipcomp_stats", ipcs, &slen, NULL, 0);
if (status < 0 && errno != ENOMEM)
err(1, "net.inet.ipcomp.ipcomp_stats");
slen = sizeof(ipips);
status = sysctlbyname("net.inet.ipip.ipip_stats", ipips, &slen, NULL, 0);
if (status < 0 && errno != ENOMEM)
err(1, "net.inet.ipip.ipip_stats");
printf("(Fast) IPsec:\n");
#define STAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" " fmt "\n", x)
if (ipsecstats[IPSEC_STAT_IN_POLVIO]+ipsecstats[IPSEC_STAT_OUT_POLVIO])
printf("\t%"PRIu64" policy violations: %"PRIu64" input %"PRIu64" output\n",
ipsecstats[IPSEC_STAT_IN_POLVIO] + ipsecstats[IPSEC_STAT_OUT_POLVIO],
ipsecstats[IPSEC_STAT_IN_POLVIO], ipsecstats[IPSEC_STAT_OUT_POLVIO]);
STAT(ipsecstats[IPSEC_STAT_OUT_NOSA], "no SA found (output)");
STAT(ipsecstats[IPSEC_STAT_OUT_NOMEM], "no memory available (output)");
STAT(ipsecstats[IPSEC_STAT_OUT_NOROUTE], "no route available (output)");
STAT(ipsecstats[IPSEC_STAT_OUT_INVAL], "generic errors (output)");
STAT(ipsecstats[IPSEC_STAT_OUT_BUNDLESA], "bundled SA processed (output)");
STAT(ipsecstats[IPSEC_STAT_SPDCACHELOOKUP], "SPD cache lookups");
STAT(ipsecstats[IPSEC_STAT_SPDCACHEMISS], "SPD cache misses");
#undef STAT
printf("\n");
printf("IPsec ah:\n");
#define AHSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" ah " fmt "\n", x)
AHSTAT(ahstats[AH_STAT_INPUT], "input packets processed");
AHSTAT(ahstats[AH_STAT_OUTPUT], "output packets processed");
AHSTAT(ahstats[AH_STAT_HDROPS], "headers too short");
AHSTAT(ahstats[AH_STAT_NOPF], "headers for unsupported address family");
AHSTAT(ahstats[AH_STAT_NOTDB], "packets with no SA");
AHSTAT(ahstats[AH_STAT_BADKCR], "packets dropped by crypto returning NULL mbuf");
AHSTAT(ahstats[AH_STAT_BADAUTH], "packets with bad authentication");
AHSTAT(ahstats[AH_STAT_NOXFORM], "packets with no xform");
AHSTAT(ahstats[AH_STAT_QFULL], "packets dropped due to queue full");
AHSTAT(ahstats[AH_STAT_WRAP], "packets dropped for replay counter wrap");
AHSTAT(ahstats[AH_STAT_REPLAY], "packets dropped for possible replay");
AHSTAT(ahstats[AH_STAT_BADAUTHL],"packets dropped for bad authenticator length");
AHSTAT(ahstats[AH_STAT_INVALID], "packets with an invalid SA");
AHSTAT(ahstats[AH_STAT_TOOBIG], "packets too big");
AHSTAT(ahstats[AH_STAT_PDROPS], "packets blocked due to policy");
AHSTAT(ahstats[AH_STAT_CRYPTO], "failed crypto requests");
AHSTAT(ahstats[AH_STAT_TUNNEL], "tunnel sanity check failures");
printf("\tah histogram:\n");
for (i = 0; i < AH_ALG_MAX; i++)
if (ahstats[AH_STAT_HIST + i])
printf("\t\tah packets with %s: %"PRIu64"\n"
, algname(i, aalgs, N(aalgs))
, ahstats[AH_STAT_HIST + i]
);
AHSTAT(ahstats[AH_STAT_IBYTES], "bytes received");
AHSTAT(ahstats[AH_STAT_OBYTES], "bytes transmitted");
#undef AHSTAT
printf("\n");
printf("IPsec esp:\n");
#define ESPSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" esp " fmt "\n", x)
ESPSTAT(espstats[ESP_STAT_INPUT],"input packets processed");
ESPSTAT(espstats[ESP_STAT_OUTPUT],"output packets processed");
ESPSTAT(espstats[ESP_STAT_HDROPS],"headers too short");
ESPSTAT(espstats[ESP_STAT_NOPF], "headers for unsupported address family");
ESPSTAT(espstats[ESP_STAT_NOTDB],"packets with no SA");
ESPSTAT(espstats[ESP_STAT_BADKCR],"packets dropped by crypto returning NULL mbuf");
ESPSTAT(espstats[ESP_STAT_QFULL],"packets dropped due to queue full");
ESPSTAT(espstats[ESP_STAT_NOXFORM],"packets with no xform");
ESPSTAT(espstats[ESP_STAT_BADILEN],"packets with bad ilen");
ESPSTAT(espstats[ESP_STAT_BADENC],"packets with bad encryption");
ESPSTAT(espstats[ESP_STAT_BADAUTH],"packets with bad authentication");
ESPSTAT(espstats[ESP_STAT_WRAP], "packets dropped for replay counter wrap");
ESPSTAT(espstats[ESP_STAT_REPLAY],"packets dropped for possible replay");
ESPSTAT(espstats[ESP_STAT_INVALID],"packets with an invalid SA");
ESPSTAT(espstats[ESP_STAT_TOOBIG],"packets too big");
ESPSTAT(espstats[ESP_STAT_PDROPS],"packets blocked due to policy");
ESPSTAT(espstats[ESP_STAT_CRYPTO],"failed crypto requests");
ESPSTAT(espstats[ESP_STAT_TUNNEL],"tunnel sanity check failures");
printf("\tesp histogram:\n");
for (i = 0; i < ESP_ALG_MAX; i++)
if (espstats[ESP_STAT_HIST + i])
printf("\t\tesp packets with %s: %"PRIu64"\n"
, algname(i, espalgs, N(espalgs))
, espstats[ESP_STAT_HIST + i]
);
ESPSTAT(espstats[ESP_STAT_IBYTES], "bytes received");
ESPSTAT(espstats[ESP_STAT_OBYTES], "bytes transmitted");
#undef ESPSTAT
printf("IPsec ipip:\n");
#define IPIPSTAT(x,fmt) \
if ((x) || sflag <= 1) printf("\t%"PRIu64" ipip " fmt "\n", x)
IPIPSTAT(ipips[IPIP_STAT_IPACKETS],"total input packets");
IPIPSTAT(ipips[IPIP_STAT_OPACKETS],"total output packets");
IPIPSTAT(ipips[IPIP_STAT_HDROPS],"packets too short for header length");
IPIPSTAT(ipips[IPIP_STAT_QFULL],"packets dropped due to queue full");
IPIPSTAT(ipips[IPIP_STAT_PDROPS],"packets blocked due to policy");
IPIPSTAT(ipips[IPIP_STAT_SPOOF],"IP spoofing attempts");
IPIPSTAT(ipips[IPIP_STAT_FAMILY],"protocol family mismatched");
IPIPSTAT(ipips[IPIP_STAT_UNSPEC],"missing tunnel-endpoint address");
IPIPSTAT(ipips[IPIP_STAT_IBYTES],"input bytes received");
IPIPSTAT(ipips[IPIP_STAT_OBYTES],"output bytes processed");
#undef IPIPSTAT
printf("IPsec ipcomp:\n");
#define IPCOMP(x,fmt) \
if ((x) || sflag <= 1) printf("\t%"PRIu64" ipcomp " fmt "\n", x)
IPCOMP(ipcs[IPCOMP_STAT_HDROPS],"packets too short for header length");
IPCOMP(ipcs[IPCOMP_STAT_NOPF], "protocol family not supported");
IPCOMP(ipcs[IPCOMP_STAT_NOTDB], "not db");
IPCOMP(ipcs[IPCOMP_STAT_BADKCR],"packets dropped by crypto returning NULL mbuf");
IPCOMP(ipcs[IPCOMP_STAT_QFULL], "queue full");
IPCOMP(ipcs[IPCOMP_STAT_NOXFORM],"no support for transform");
IPCOMP(ipcs[IPCOMP_STAT_WRAP], "packets dropped for replay counter wrap");
IPCOMP(ipcs[IPCOMP_STAT_INPUT], "input IPcomp packets");
IPCOMP(ipcs[IPCOMP_STAT_OUTPUT],"output IPcomp packets");
IPCOMP(ipcs[IPCOMP_STAT_INVALID],"specified an invalid TDB");
IPCOMP(ipcs[IPCOMP_STAT_TOOBIG],"packets decompressed as too big");
IPCOMP(ipcs[IPCOMP_STAT_MINLEN], "packets too short to be compressed");
IPCOMP(ipcs[IPCOMP_STAT_USELESS],"packet for which compression was useless");
IPCOMP(ipcs[IPCOMP_STAT_PDROPS],"packets blocked due to policy");
IPCOMP(ipcs[IPCOMP_STAT_CRYPTO],"failed crypto requests");
printf("\tIPcomp histogram:\n");
for (i = 0; i < IPCOMP_ALG_MAX; i++)
if (ipcs[IPCOMP_STAT_HIST + i])
printf("\t\tIPcomp packets with %s: %"PRIu64"\n"
, algname(i, ipcompalgs, N(ipcompalgs))
, ipcs[IPCOMP_STAT_HIST + i]
);
IPCOMP(ipcs[IPCOMP_STAT_IBYTES],"input bytes");
IPCOMP(ipcs[IPCOMP_STAT_OBYTES],"output bytes");
#undef IPCOMP
}
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