fast_ipsec.c revision 1.7.12.1
1 /* $NetBSD: fast_ipsec.c,v 1.7.12.1 2008/01/09 02:00:50 matt Exp $ */ 2 /* $FreeBSD: src/tools/tools/crypto/ipsecstats.c,v 1.1.4.1 2003/06/03 00:13:13 sam Exp $ */ 3 4 /*- 5 * Copyright (c) 2003, 2004 Jonathan Stone 6 * Copyright (c) 2002, 2003 Sam Leffler, Errno Consulting 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD: src/tools/tools/crypto/ipsecstats.c,v 1.1.4.1 2003/06/03 00:13:13 sam Exp $ 31 */ 32 33 #include <sys/cdefs.h> 34 #ifndef lint 35 #ifdef __NetBSD__ 36 __RCSID("$NetBSD: fast_ipsec.c,v 1.7.12.1 2008/01/09 02:00:50 matt Exp $"); 37 #endif 38 #endif /* not lint*/ 39 40 /* Kernel headers required, but not included, by netstat.h */ 41 #include <sys/types.h> 42 #include <sys/socket.h> 43 44 /* Kernel headers for sysctl(3). */ 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 48 /* Kernel headers for FAST_IPSEC statistics */ 49 #include <net/pfkeyv2.h> 50 #include <netipsec/esp_var.h> 51 #include <netipsec/ah_var.h> 52 #include <netipsec/ipip_var.h> 53 #include <netipsec/ipcomp_var.h> 54 #include <netipsec/ipsec_var.h> 55 #include <netipsec/keydb.h> 56 57 #include <machine/int_fmtio.h> 58 59 #include <kvm.h> 60 #include <err.h> 61 #include <errno.h> 62 #include <stdio.h> 63 #include <string.h> 64 65 #include "netstat.h" 66 67 /* 68 * Cache the check to see if we have fast_ipsec so that we don't 69 * have to go to the kernel repeatedly. 70 */ 71 static int 72 have_fast_ipsec(void) 73 { 74 static int haveit = -1; 75 76 if (haveit == -1) { 77 if (sysctlbyname("net.inet.ipsec.ipsecstats", NULL, NULL, 78 NULL, 0) == -1) 79 haveit = 0; 80 else 81 haveit = 1; 82 } 83 84 return (haveit); 85 } 86 87 /* 88 * Dispatch between fetching and printing (KAME) IPsec statistics, 89 * and FAST_IPSEC statistics, so the rest of netstat need not know 90 * about the vagaries of the two implementations. 91 */ 92 void 93 ipsec_switch(u_long off, char * name) 94 { 95 96 if (have_fast_ipsec()) 97 return fast_ipsec_stats(off, name); 98 99 return ipsec_stats(off, name); 100 } 101 102 103 /* 104 * Table-driven mapping from SADB algorithm codes to string names. 105 */ 106 struct alg { 107 int a; 108 const char *name; 109 }; 110 static const struct alg aalgs[] = { 111 { SADB_AALG_NONE, "none", }, 112 { SADB_AALG_MD5HMAC, "hmac-md5", }, 113 { SADB_AALG_SHA1HMAC, "hmac-sha1", }, 114 { SADB_X_AALG_MD5, "md5", }, 115 { SADB_X_AALG_SHA, "sha", }, 116 { SADB_X_AALG_NULL, "null", }, 117 { SADB_X_AALG_SHA2_256, "hmac-sha2-256", }, 118 { SADB_X_AALG_SHA2_384, "hmac-sha2-384", }, 119 { SADB_X_AALG_SHA2_512, "hmac-sha2-512", }, 120 }; 121 static const struct alg espalgs[] = { 122 { SADB_EALG_NONE, "none", }, 123 { SADB_EALG_DESCBC, "des-cbc", }, 124 { SADB_EALG_3DESCBC, "3des-cbc", }, 125 { SADB_EALG_NULL, "null", }, 126 { SADB_X_EALG_CAST128CBC, "cast128-cbc", }, 127 { SADB_X_EALG_BLOWFISHCBC, "blowfish-cbc", }, 128 { SADB_X_EALG_RIJNDAELCBC, "aes-cbc", }, 129 }; 130 static const struct alg ipcompalgs[] = { 131 { SADB_X_CALG_NONE, "none", }, 132 { SADB_X_CALG_OUI, "oui", }, 133 { SADB_X_CALG_DEFLATE, "deflate", }, 134 { SADB_X_CALG_LZS, "lzs", }, 135 }; 136 #define N(a) (sizeof(a)/sizeof(a[0])) 137 138 static const char* 139 algname(int a, const struct alg algs[], int nalgs) 140 { 141 static char buf[80]; 142 int i; 143 144 for (i = 0; i < nalgs; i++) 145 if (algs[i].a == a) 146 return algs[i].name; 147 snprintf(buf, sizeof(buf), "alg#%u", a); 148 return buf; 149 } 150 151 /* 152 * Print the fast_ipsec statistics. 153 * Since NetBSD's netstat(1) seems not to find us for "netstat -s", 154 * but does(?) find KAME, be prepared to be called explicitly from 155 * netstat's main program for "netstat -s"; but silently do nothing 156 * if that happens when we are running on KAME IPsec. 157 */ 158 void 159 fast_ipsec_stats(u_long off, char *name) 160 { 161 struct newipsecstat ipsecstats; 162 struct ahstat ahstats; 163 struct espstat espstats; 164 struct ipcompstat ipcs; 165 struct ipipstat ipips; 166 int status; 167 size_t slen; 168 int i; 169 170 memset(&ipsecstats, 0, sizeof(ipsecstats)); 171 memset(&ahstats, 0, sizeof(ahstats)); 172 memset(&espstats, 0, sizeof(espstats)); 173 memset(&ipcs, 0, sizeof(ipcs)); 174 memset(&ipips, 0, sizeof(ipips)); 175 176 /* silence check */ 177 if (!have_fast_ipsec()) 178 return; 179 180 slen = sizeof(ipsecstats); 181 status = sysctlbyname("net.inet.ipsec.ipsecstats", &ipsecstats, &slen, 182 NULL, 0); 183 if (status < 0 && errno != ENOMEM) 184 err(1, "net.inet.ipsec.ipsecstats"); 185 186 slen = sizeof (ahstats); 187 status = sysctlbyname("net.inet.ah.ah_stats", &ahstats, &slen, NULL, 0); 188 if (status < 0 && errno != ENOMEM) 189 err(1, "net.inet.ah.ah_stats"); 190 191 slen = sizeof (espstats); 192 status = sysctlbyname("net.inet.esp.esp_stats", &espstats, &slen, NULL, 0); 193 if (status < 0 && errno != ENOMEM) 194 err(1, "net.inet.esp.esp_stats"); 195 196 slen = sizeof(ipcs); 197 status = sysctlbyname("net.inet.ipcomp.ipcomp_stats", &ipcs, &slen, NULL, 0); 198 if (status < 0 && errno != ENOMEM) 199 err(1, "net.inet.ipcomp.ipcomp_stats"); 200 201 slen = sizeof(ipips); 202 status = sysctlbyname("net.inet.ipip.ipip_stats", &ipips, &slen, NULL, 0); 203 if (status < 0 && errno != ENOMEM) 204 err(1, "net.inet.ipip.ipip_stats"); 205 206 printf("(Fast) IPsec:\n"); 207 208 #define STAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" " fmt "\n", x) 209 if (ipsecstats.ips_in_polvio+ipsecstats.ips_out_polvio) 210 printf("\t%"PRIu64" policy violations: %"PRIu64" input %"PRIu64" output\n", 211 ipsecstats.ips_in_polvio + ipsecstats.ips_out_polvio, 212 ipsecstats.ips_in_polvio, ipsecstats.ips_out_polvio); 213 STAT(ipsecstats.ips_out_nosa, "no SA found (output)"); 214 STAT(ipsecstats.ips_out_nomem, "no memory available (output)"); 215 STAT(ipsecstats.ips_out_noroute, "no route available (output)"); 216 STAT(ipsecstats.ips_out_inval, "generic errors (output)"); 217 STAT(ipsecstats.ips_out_bundlesa, "bundled SA processed (output)"); 218 STAT(ipsecstats.ips_spdcache_lookup, "SPD cache lookups"); 219 STAT(ipsecstats.ips_spdcache_miss, "SPD cache misses"); 220 #undef STAT 221 printf("\n"); 222 223 printf("IPsec ah:\n"); 224 #define AHSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" ah " fmt "\n", x) 225 AHSTAT(ahstats.ahs_input, "input packets processed"); 226 AHSTAT(ahstats.ahs_output, "output packets processed"); 227 AHSTAT(ahstats.ahs_hdrops, "headers too short"); 228 AHSTAT(ahstats.ahs_nopf, "headers for unsupported address family"); 229 AHSTAT(ahstats.ahs_notdb, "packets with no SA"); 230 AHSTAT(ahstats.ahs_badkcr, "packets dropped by crypto returning NULL mbuf"); 231 AHSTAT(ahstats.ahs_badauth, "packets with bad authentication"); 232 AHSTAT(ahstats.ahs_noxform, "packets with no xform"); 233 AHSTAT(ahstats.ahs_qfull, "packets dropped due to queue full"); 234 AHSTAT(ahstats.ahs_wrap, "packets dropped for replay counter wrap"); 235 AHSTAT(ahstats.ahs_replay, "packets dropped for possible replay"); 236 AHSTAT(ahstats.ahs_badauthl,"packets dropped for bad authenticator length"); 237 AHSTAT(ahstats.ahs_invalid, "packets with an invalid SA"); 238 AHSTAT(ahstats.ahs_toobig, "packets too big"); 239 AHSTAT(ahstats.ahs_pdrops, "packets blocked due to policy"); 240 AHSTAT(ahstats.ahs_crypto, "failed crypto requests"); 241 AHSTAT(ahstats.ahs_tunnel, "tunnel sanity check failures"); 242 243 printf("\tah histogram:\n"); 244 for (i = 0; i < AH_ALG_MAX; i++) 245 if (ahstats.ahs_hist[i]) 246 printf("\t\tah packets with %s: %"PRIu64"\n" 247 , algname(i, aalgs, N(aalgs)) 248 , ahstats.ahs_hist[i] 249 ); 250 AHSTAT(ahstats.ahs_ibytes, "bytes received"); 251 AHSTAT(ahstats.ahs_obytes, "bytes transmitted"); 252 #undef AHSTAT 253 printf("\n"); 254 255 printf("IPsec esp:\n"); 256 #define ESPSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" esp " fmt "\n", x) 257 ESPSTAT(espstats.esps_input, "input packets processed"); 258 ESPSTAT(espstats.esps_output, "output packets processed"); 259 ESPSTAT(espstats.esps_hdrops, "headers too short"); 260 ESPSTAT(espstats.esps_nopf, "headers for unsupported address family"); 261 ESPSTAT(espstats.esps_notdb, "packets with no SA"); 262 ESPSTAT(espstats.esps_badkcr, "packets dropped by crypto returning NULL mbuf"); 263 ESPSTAT(espstats.esps_qfull, "packets dropped due to queue full"); 264 ESPSTAT(espstats.esps_noxform, "packets with no xform"); 265 ESPSTAT(espstats.esps_badilen, "packets with bad ilen"); 266 ESPSTAT(espstats.esps_badenc, "packets with bad encryption"); 267 ESPSTAT(espstats.esps_badauth, "packets with bad authentication"); 268 ESPSTAT(espstats.esps_wrap, "packets dropped for replay counter wrap"); 269 ESPSTAT(espstats.esps_replay, "packets dropped for possible replay"); 270 ESPSTAT(espstats.esps_invalid, "packets with an invalid SA"); 271 ESPSTAT(espstats.esps_toobig, "packets too big"); 272 ESPSTAT(espstats.esps_pdrops, "packets blocked due to policy"); 273 ESPSTAT(espstats.esps_crypto, "failed crypto requests"); 274 ESPSTAT(espstats.esps_tunnel, "tunnel sanity check failures"); 275 printf("\tesp histogram:\n"); 276 for (i = 0; i < ESP_ALG_MAX; i++) 277 if (espstats.esps_hist[i]) 278 printf("\t\tesp packets with %s: %"PRIu64"\n" 279 , algname(i, espalgs, N(espalgs)) 280 , espstats.esps_hist[i] 281 ); 282 ESPSTAT(espstats.esps_ibytes, "bytes received"); 283 ESPSTAT(espstats.esps_obytes, "bytes transmitted"); 284 #undef ESPSTAT 285 printf("IPsec ipip:\n"); 286 287 #define IPIPSTAT(x,fmt) \ 288 if ((x) || sflag <= 1) printf("\t%"PRIu64" ipip " fmt "\n", x) 289 IPIPSTAT(ipips.ipips_ipackets, "total input packets"); 290 IPIPSTAT(ipips.ipips_opackets, "total output packets"); 291 IPIPSTAT(ipips.ipips_hdrops, "packets too short for header length"); 292 IPIPSTAT(ipips.ipips_qfull, "packets dropped due to queue full"); 293 IPIPSTAT(ipips.ipips_pdrops, "packets blocked due to policy"); 294 IPIPSTAT(ipips.ipips_spoof, "IP spoofing attempts"); 295 IPIPSTAT(ipips.ipips_family, "protocol family mismatched"); 296 IPIPSTAT(ipips.ipips_unspec, "missing tunnel-endpoint address"); 297 IPIPSTAT(ipips.ipips_ibytes, "input bytes received"); 298 IPIPSTAT(ipips.ipips_obytes, "output bytes processed"); 299 #undef IPIPSTAT 300 301 printf("IPsec ipcomp:\n"); 302 #define IPCOMP(x,fmt) \ 303 if ((x) || sflag <= 1) printf("\t%"PRIu64" ipcomp " fmt "\n", x) 304 305 IPCOMP(ipcs.ipcomps_hdrops, "packets too short for header length"); 306 IPCOMP(ipcs.ipcomps_nopf, "protocol family not supported"); 307 IPCOMP(ipcs.ipcomps_notdb, "not db"); 308 IPCOMP(ipcs.ipcomps_badkcr, "packets dropped by crypto returning NULL mbuf"); 309 IPCOMP(ipcs.ipcomps_qfull, "queue full"); 310 IPCOMP(ipcs.ipcomps_noxform, "no support for transform"); 311 IPCOMP(ipcs.ipcomps_wrap, "packets dropped for replay counter wrap"); 312 IPCOMP(ipcs.ipcomps_input, "input IPcomp packets"); 313 IPCOMP(ipcs.ipcomps_output, "output IPcomp packets"); 314 IPCOMP(ipcs.ipcomps_invalid, "specified an invalid TDB"); 315 IPCOMP(ipcs.ipcomps_toobig, "packets decompressed as too big"); 316 IPCOMP(ipcs.ipcomps_minlen, "packets too short to be compressed"); 317 IPCOMP(ipcs.ipcomps_uselesscomp, "packet for which compression was useless"); 318 IPCOMP(ipcs.ipcomps_pdrops, "packets blocked due to policy"); 319 IPCOMP(ipcs.ipcomps_crypto, "failed crypto requests"); 320 321 printf("\tIPcomp histogram:\n"); 322 for (i = 0; i < IPCOMP_ALG_MAX; i++) 323 if (ipcs.ipcomps_hist[i]) 324 printf("\t\tIPcomp packets with %s: %"PRIu64"\n" 325 , algname(i, ipcompalgs, N(ipcompalgs)) 326 , ipcs.ipcomps_hist[i] 327 ); 328 IPCOMP(ipcs.ipcomps_ibytes, "input bytes"); 329 IPCOMP(ipcs.ipcomps_obytes, "output bytes"); 330 #undef IPCOMP 331 } 332
Indexes created Wed Sep 24 05:09:52 GMT 2025