332 lines
12 KiB
C
332 lines
12 KiB
C
/* $NetBSD: fast_ipsec.c,v 1.10 2008/04/23 06:09:04 thorpej Exp $ */
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/* $FreeBSD: src/tools/tools/crypto/ipsecstats.c,v 1.1.4.1 2003/06/03 00:13:13 sam Exp $ */
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/*-
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* Copyright (c) 2003, 2004 Jonathan Stone
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* Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD: src/tools/tools/crypto/ipsecstats.c,v 1.1.4.1 2003/06/03 00:13:13 sam Exp $
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#ifdef __NetBSD__
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__RCSID("$NetBSD: fast_ipsec.c,v 1.10 2008/04/23 06:09:04 thorpej Exp $");
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#endif
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#endif /* not lint*/
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/* Kernel headers required, but not included, by netstat.h */
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#include <sys/types.h>
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#include <sys/socket.h>
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/* Kernel headers for sysctl(3). */
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#include <sys/param.h>
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#include <sys/sysctl.h>
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/* Kernel headers for FAST_IPSEC statistics */
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#include <net/pfkeyv2.h>
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#include <netipsec/esp_var.h>
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#include <netipsec/ah_var.h>
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#include <netipsec/ipip_var.h>
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#include <netipsec/ipcomp_var.h>
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#include <netipsec/ipsec_var.h>
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#include <netipsec/keydb.h>
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#include <machine/int_fmtio.h>
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#include <kvm.h>
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#include <err.h>
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#include <errno.h>
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#include <stdio.h>
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#include <string.h>
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#include "netstat.h"
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/*
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* Cache the check to see if we have fast_ipsec so that we don't
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* have to go to the kernel repeatedly.
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*/
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static int
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have_fast_ipsec(void)
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{
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static int haveit = -1;
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if (haveit == -1) {
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if (sysctlbyname("net.inet.ipsec.ipsecstats", NULL, NULL,
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NULL, 0) == -1)
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haveit = 0;
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else
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haveit = 1;
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}
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return (haveit);
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}
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/*
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* Dispatch between fetching and printing (KAME) IPsec statistics,
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* and FAST_IPSEC statistics, so the rest of netstat need not know
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* about the vagaries of the two implementations.
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*/
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void
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ipsec_switch(u_long off, char * name)
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{
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if (have_fast_ipsec())
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return fast_ipsec_stats(off, name);
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return ipsec_stats(off, name);
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}
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/*
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* Table-driven mapping from SADB algorithm codes to string names.
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*/
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struct alg {
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int a;
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const char *name;
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};
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static const struct alg aalgs[] = {
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{ SADB_AALG_NONE, "none", },
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{ SADB_AALG_MD5HMAC, "hmac-md5", },
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{ SADB_AALG_SHA1HMAC, "hmac-sha1", },
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{ SADB_X_AALG_MD5, "md5", },
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{ SADB_X_AALG_SHA, "sha", },
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{ SADB_X_AALG_NULL, "null", },
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{ SADB_X_AALG_SHA2_256, "hmac-sha2-256", },
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{ SADB_X_AALG_SHA2_384, "hmac-sha2-384", },
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{ SADB_X_AALG_SHA2_512, "hmac-sha2-512", },
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};
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static const struct alg espalgs[] = {
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{ SADB_EALG_NONE, "none", },
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{ SADB_EALG_DESCBC, "des-cbc", },
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{ SADB_EALG_3DESCBC, "3des-cbc", },
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{ SADB_EALG_NULL, "null", },
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{ SADB_X_EALG_CAST128CBC, "cast128-cbc", },
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{ SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", },
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{ SADB_X_EALG_RIJNDAELCBC, "aes-cbc", },
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};
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static const struct alg ipcompalgs[] = {
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{ SADB_X_CALG_NONE, "none", },
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{ SADB_X_CALG_OUI, "oui", },
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{ SADB_X_CALG_DEFLATE, "deflate", },
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{ SADB_X_CALG_LZS, "lzs", },
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};
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#define N(a) (sizeof(a)/sizeof(a[0]))
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static const char*
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algname(int a, const struct alg algs[], int nalgs)
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{
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static char buf[80];
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int i;
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for (i = 0; i < nalgs; i++)
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if (algs[i].a == a)
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return algs[i].name;
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snprintf(buf, sizeof(buf), "alg#%u", a);
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return buf;
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}
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/*
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* Print the fast_ipsec statistics.
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* Since NetBSD's netstat(1) seems not to find us for "netstat -s",
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* but does(?) find KAME, be prepared to be called explicitly from
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* netstat's main program for "netstat -s"; but silently do nothing
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* if that happens when we are running on KAME IPsec.
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*/
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void
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fast_ipsec_stats(u_long off, char *name)
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{
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uint64_t ipsecstats[IPSEC_NSTATS];
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uint64_t ahstats[AH_NSTATS];
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uint64_t espstats[ESP_NSTATS];
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uint64_t ipcs[IPCOMP_NSTATS];
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uint64_t ipips[IPIP_NSTATS];
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int status;
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size_t slen;
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int i;
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memset(ipsecstats, 0, sizeof(ipsecstats));
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memset(ahstats, 0, sizeof(ahstats));
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memset(espstats, 0, sizeof(espstats));
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memset(ipcs, 0, sizeof(ipcs));
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memset(ipips, 0, sizeof(ipips));
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/* silence check */
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if (!have_fast_ipsec())
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return;
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slen = sizeof(ipsecstats);
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status = sysctlbyname("net.inet.ipsec.ipsecstats", ipsecstats, &slen,
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NULL, 0);
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if (status < 0 && errno != ENOMEM)
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err(1, "net.inet.ipsec.ipsecstats");
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slen = sizeof (ahstats);
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status = sysctlbyname("net.inet.ah.ah_stats", ahstats, &slen, NULL, 0);
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if (status < 0 && errno != ENOMEM)
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err(1, "net.inet.ah.ah_stats");
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slen = sizeof (espstats);
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status = sysctlbyname("net.inet.esp.esp_stats", espstats, &slen, NULL, 0);
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if (status < 0 && errno != ENOMEM)
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err(1, "net.inet.esp.esp_stats");
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slen = sizeof(ipcs);
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status = sysctlbyname("net.inet.ipcomp.ipcomp_stats", ipcs, &slen, NULL, 0);
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if (status < 0 && errno != ENOMEM)
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err(1, "net.inet.ipcomp.ipcomp_stats");
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slen = sizeof(ipips);
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status = sysctlbyname("net.inet.ipip.ipip_stats", ipips, &slen, NULL, 0);
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if (status < 0 && errno != ENOMEM)
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err(1, "net.inet.ipip.ipip_stats");
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printf("(Fast) IPsec:\n");
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#define STAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" " fmt "\n", x)
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if (ipsecstats[IPSEC_STAT_IN_POLVIO]+ipsecstats[IPSEC_STAT_OUT_POLVIO])
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printf("\t%"PRIu64" policy violations: %"PRIu64" input %"PRIu64" output\n",
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ipsecstats[IPSEC_STAT_IN_POLVIO] + ipsecstats[IPSEC_STAT_OUT_POLVIO],
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ipsecstats[IPSEC_STAT_IN_POLVIO], ipsecstats[IPSEC_STAT_OUT_POLVIO]);
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STAT(ipsecstats[IPSEC_STAT_OUT_NOSA], "no SA found (output)");
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STAT(ipsecstats[IPSEC_STAT_OUT_NOMEM], "no memory available (output)");
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STAT(ipsecstats[IPSEC_STAT_OUT_NOROUTE], "no route available (output)");
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STAT(ipsecstats[IPSEC_STAT_OUT_INVAL], "generic errors (output)");
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STAT(ipsecstats[IPSEC_STAT_OUT_BUNDLESA], "bundled SA processed (output)");
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STAT(ipsecstats[IPSEC_STAT_SPDCACHELOOKUP], "SPD cache lookups");
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STAT(ipsecstats[IPSEC_STAT_SPDCACHEMISS], "SPD cache misses");
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#undef STAT
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printf("\n");
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printf("IPsec ah:\n");
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#define AHSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" ah " fmt "\n", x)
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AHSTAT(ahstats[AH_STAT_INPUT], "input packets processed");
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AHSTAT(ahstats[AH_STAT_OUTPUT], "output packets processed");
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AHSTAT(ahstats[AH_STAT_HDROPS], "headers too short");
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AHSTAT(ahstats[AH_STAT_NOPF], "headers for unsupported address family");
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AHSTAT(ahstats[AH_STAT_NOTDB], "packets with no SA");
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AHSTAT(ahstats[AH_STAT_BADKCR], "packets dropped by crypto returning NULL mbuf");
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AHSTAT(ahstats[AH_STAT_BADAUTH], "packets with bad authentication");
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AHSTAT(ahstats[AH_STAT_NOXFORM], "packets with no xform");
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AHSTAT(ahstats[AH_STAT_QFULL], "packets dropped due to queue full");
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AHSTAT(ahstats[AH_STAT_WRAP], "packets dropped for replay counter wrap");
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AHSTAT(ahstats[AH_STAT_REPLAY], "packets dropped for possible replay");
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AHSTAT(ahstats[AH_STAT_BADAUTHL],"packets dropped for bad authenticator length");
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AHSTAT(ahstats[AH_STAT_INVALID], "packets with an invalid SA");
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AHSTAT(ahstats[AH_STAT_TOOBIG], "packets too big");
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AHSTAT(ahstats[AH_STAT_PDROPS], "packets blocked due to policy");
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AHSTAT(ahstats[AH_STAT_CRYPTO], "failed crypto requests");
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AHSTAT(ahstats[AH_STAT_TUNNEL], "tunnel sanity check failures");
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printf("\tah histogram:\n");
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for (i = 0; i < AH_ALG_MAX; i++)
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if (ahstats[AH_STAT_HIST + i])
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printf("\t\tah packets with %s: %"PRIu64"\n"
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, algname(i, aalgs, N(aalgs))
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, ahstats[AH_STAT_HIST + i]
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);
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AHSTAT(ahstats[AH_STAT_IBYTES], "bytes received");
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AHSTAT(ahstats[AH_STAT_OBYTES], "bytes transmitted");
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#undef AHSTAT
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printf("\n");
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printf("IPsec esp:\n");
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#define ESPSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" esp " fmt "\n", x)
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ESPSTAT(espstats[ESP_STAT_INPUT],"input packets processed");
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ESPSTAT(espstats[ESP_STAT_OUTPUT],"output packets processed");
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ESPSTAT(espstats[ESP_STAT_HDROPS],"headers too short");
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ESPSTAT(espstats[ESP_STAT_NOPF], "headers for unsupported address family");
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ESPSTAT(espstats[ESP_STAT_NOTDB],"packets with no SA");
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ESPSTAT(espstats[ESP_STAT_BADKCR],"packets dropped by crypto returning NULL mbuf");
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ESPSTAT(espstats[ESP_STAT_QFULL],"packets dropped due to queue full");
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ESPSTAT(espstats[ESP_STAT_NOXFORM],"packets with no xform");
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ESPSTAT(espstats[ESP_STAT_BADILEN],"packets with bad ilen");
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ESPSTAT(espstats[ESP_STAT_BADENC],"packets with bad encryption");
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ESPSTAT(espstats[ESP_STAT_BADAUTH],"packets with bad authentication");
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ESPSTAT(espstats[ESP_STAT_WRAP], "packets dropped for replay counter wrap");
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ESPSTAT(espstats[ESP_STAT_REPLAY],"packets dropped for possible replay");
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ESPSTAT(espstats[ESP_STAT_INVALID],"packets with an invalid SA");
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ESPSTAT(espstats[ESP_STAT_TOOBIG],"packets too big");
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ESPSTAT(espstats[ESP_STAT_PDROPS],"packets blocked due to policy");
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ESPSTAT(espstats[ESP_STAT_CRYPTO],"failed crypto requests");
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ESPSTAT(espstats[ESP_STAT_TUNNEL],"tunnel sanity check failures");
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printf("\tesp histogram:\n");
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for (i = 0; i < ESP_ALG_MAX; i++)
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if (espstats[ESP_STAT_HIST + i])
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printf("\t\tesp packets with %s: %"PRIu64"\n"
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, algname(i, espalgs, N(espalgs))
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, espstats[ESP_STAT_HIST + i]
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);
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ESPSTAT(espstats[ESP_STAT_IBYTES], "bytes received");
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ESPSTAT(espstats[ESP_STAT_OBYTES], "bytes transmitted");
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#undef ESPSTAT
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printf("IPsec ipip:\n");
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#define IPIPSTAT(x,fmt) \
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if ((x) || sflag <= 1) printf("\t%"PRIu64" ipip " fmt "\n", x)
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IPIPSTAT(ipips[IPIP_STAT_IPACKETS],"total input packets");
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IPIPSTAT(ipips[IPIP_STAT_OPACKETS],"total output packets");
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IPIPSTAT(ipips[IPIP_STAT_HDROPS],"packets too short for header length");
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IPIPSTAT(ipips[IPIP_STAT_QFULL],"packets dropped due to queue full");
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IPIPSTAT(ipips[IPIP_STAT_PDROPS],"packets blocked due to policy");
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IPIPSTAT(ipips[IPIP_STAT_SPOOF],"IP spoofing attempts");
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IPIPSTAT(ipips[IPIP_STAT_FAMILY],"protocol family mismatched");
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IPIPSTAT(ipips[IPIP_STAT_UNSPEC],"missing tunnel-endpoint address");
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IPIPSTAT(ipips[IPIP_STAT_IBYTES],"input bytes received");
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IPIPSTAT(ipips[IPIP_STAT_OBYTES],"output bytes processed");
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#undef IPIPSTAT
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printf("IPsec ipcomp:\n");
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#define IPCOMP(x,fmt) \
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if ((x) || sflag <= 1) printf("\t%"PRIu64" ipcomp " fmt "\n", x)
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IPCOMP(ipcs[IPCOMP_STAT_HDROPS],"packets too short for header length");
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IPCOMP(ipcs[IPCOMP_STAT_NOPF], "protocol family not supported");
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IPCOMP(ipcs[IPCOMP_STAT_NOTDB], "not db");
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IPCOMP(ipcs[IPCOMP_STAT_BADKCR],"packets dropped by crypto returning NULL mbuf");
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IPCOMP(ipcs[IPCOMP_STAT_QFULL], "queue full");
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IPCOMP(ipcs[IPCOMP_STAT_NOXFORM],"no support for transform");
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IPCOMP(ipcs[IPCOMP_STAT_WRAP], "packets dropped for replay counter wrap");
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IPCOMP(ipcs[IPCOMP_STAT_INPUT], "input IPcomp packets");
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IPCOMP(ipcs[IPCOMP_STAT_OUTPUT],"output IPcomp packets");
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IPCOMP(ipcs[IPCOMP_STAT_INVALID],"specified an invalid TDB");
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IPCOMP(ipcs[IPCOMP_STAT_TOOBIG],"packets decompressed as too big");
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IPCOMP(ipcs[IPCOMP_STAT_MINLEN], "packets too short to be compressed");
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IPCOMP(ipcs[IPCOMP_STAT_USELESS],"packet for which compression was useless");
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IPCOMP(ipcs[IPCOMP_STAT_PDROPS],"packets blocked due to policy");
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IPCOMP(ipcs[IPCOMP_STAT_CRYPTO],"failed crypto requests");
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printf("\tIPcomp histogram:\n");
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for (i = 0; i < IPCOMP_ALG_MAX; i++)
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if (ipcs[IPCOMP_STAT_HIST + i])
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printf("\t\tIPcomp packets with %s: %"PRIu64"\n"
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, algname(i, ipcompalgs, N(ipcompalgs))
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, ipcs[IPCOMP_STAT_HIST + i]
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);
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IPCOMP(ipcs[IPCOMP_STAT_IBYTES],"input bytes");
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IPCOMP(ipcs[IPCOMP_STAT_OBYTES],"output bytes");
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#undef IPCOMP
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}
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