fast_ipsec.c revision 1.9.4.1
1 /* $NetBSD: fast_ipsec.c,v 1.9.4.1 2008/05/18 12:36:07 yamt 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 1.9.4.1 2008/05/18 12:36:07 yamt 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 uint64_t ipsecstats[IPSEC_NSTATS]; 162 uint64_t ahstats[AH_NSTATS]; 163 uint64_t espstats[ESP_NSTATS]; 164 uint64_t ipcs[IPCOMP_NSTATS]; 165 uint64_t ipips[IPIP_NSTATS]; 166 int status; 167 size_t slen; 168 int i; 169 170 if (! use_sysctl) { 171 warnx("IPsec stats not available via KVM."); 172 return; 173 } 174 175 memset(ipsecstats, 0, sizeof(ipsecstats)); 176 memset(ahstats, 0, sizeof(ahstats)); 177 memset(espstats, 0, sizeof(espstats)); 178 memset(ipcs, 0, sizeof(ipcs)); 179 memset(ipips, 0, sizeof(ipips)); 180 181 /* silence check */ 182 if (!have_fast_ipsec()) 183 return; 184 185 slen = sizeof(ipsecstats); 186 status = sysctlbyname("net.inet.ipsec.ipsecstats", ipsecstats, &slen, 187 NULL, 0); 188 if (status < 0 && errno != ENOMEM) 189 err(1, "net.inet.ipsec.ipsecstats"); 190 191 slen = sizeof (ahstats); 192 status = sysctlbyname("net.inet.ah.ah_stats", ahstats, &slen, NULL, 0); 193 if (status < 0 && errno != ENOMEM) 194 err(1, "net.inet.ah.ah_stats"); 195 196 slen = sizeof (espstats); 197 status = sysctlbyname("net.inet.esp.esp_stats", espstats, &slen, NULL, 0); 198 if (status < 0 && errno != ENOMEM) 199 err(1, "net.inet.esp.esp_stats"); 200 201 slen = sizeof(ipcs); 202 status = sysctlbyname("net.inet.ipcomp.ipcomp_stats", ipcs, &slen, NULL, 0); 203 if (status < 0 && errno != ENOMEM) 204 err(1, "net.inet.ipcomp.ipcomp_stats"); 205 206 slen = sizeof(ipips); 207 status = sysctlbyname("net.inet.ipip.ipip_stats", ipips, &slen, NULL, 0); 208 if (status < 0 && errno != ENOMEM) 209 err(1, "net.inet.ipip.ipip_stats"); 210 211 printf("(Fast) IPsec:\n"); 212 213 #define STAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" " fmt "\n", x) 214 if (ipsecstats[IPSEC_STAT_IN_POLVIO]+ipsecstats[IPSEC_STAT_OUT_POLVIO]) 215 printf("\t%"PRIu64" policy violations: %"PRIu64" input %"PRIu64" output\n", 216 ipsecstats[IPSEC_STAT_IN_POLVIO] + ipsecstats[IPSEC_STAT_OUT_POLVIO], 217 ipsecstats[IPSEC_STAT_IN_POLVIO], ipsecstats[IPSEC_STAT_OUT_POLVIO]); 218 STAT(ipsecstats[IPSEC_STAT_OUT_NOSA], "no SA found (output)"); 219 STAT(ipsecstats[IPSEC_STAT_OUT_NOMEM], "no memory available (output)"); 220 STAT(ipsecstats[IPSEC_STAT_OUT_NOROUTE], "no route available (output)"); 221 STAT(ipsecstats[IPSEC_STAT_OUT_INVAL], "generic errors (output)"); 222 STAT(ipsecstats[IPSEC_STAT_OUT_BUNDLESA], "bundled SA processed (output)"); 223 STAT(ipsecstats[IPSEC_STAT_SPDCACHELOOKUP], "SPD cache lookups"); 224 STAT(ipsecstats[IPSEC_STAT_SPDCACHEMISS], "SPD cache misses"); 225 #undef STAT 226 printf("\n"); 227 228 printf("IPsec ah:\n"); 229 #define AHSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" ah " fmt "\n", x) 230 AHSTAT(ahstats[AH_STAT_INPUT], "input packets processed"); 231 AHSTAT(ahstats[AH_STAT_OUTPUT], "output packets processed"); 232 AHSTAT(ahstats[AH_STAT_HDROPS], "headers too short"); 233 AHSTAT(ahstats[AH_STAT_NOPF], "headers for unsupported address family"); 234 AHSTAT(ahstats[AH_STAT_NOTDB], "packets with no SA"); 235 AHSTAT(ahstats[AH_STAT_BADKCR], "packets dropped by crypto returning NULL mbuf"); 236 AHSTAT(ahstats[AH_STAT_BADAUTH], "packets with bad authentication"); 237 AHSTAT(ahstats[AH_STAT_NOXFORM], "packets with no xform"); 238 AHSTAT(ahstats[AH_STAT_QFULL], "packets dropped due to queue full"); 239 AHSTAT(ahstats[AH_STAT_WRAP], "packets dropped for replay counter wrap"); 240 AHSTAT(ahstats[AH_STAT_REPLAY], "packets dropped for possible replay"); 241 AHSTAT(ahstats[AH_STAT_BADAUTHL],"packets dropped for bad authenticator length"); 242 AHSTAT(ahstats[AH_STAT_INVALID], "packets with an invalid SA"); 243 AHSTAT(ahstats[AH_STAT_TOOBIG], "packets too big"); 244 AHSTAT(ahstats[AH_STAT_PDROPS], "packets blocked due to policy"); 245 AHSTAT(ahstats[AH_STAT_CRYPTO], "failed crypto requests"); 246 AHSTAT(ahstats[AH_STAT_TUNNEL], "tunnel sanity check failures"); 247 248 printf("\tah histogram:\n"); 249 for (i = 0; i < AH_ALG_MAX; i++) 250 if (ahstats[AH_STAT_HIST + i]) 251 printf("\t\tah packets with %s: %"PRIu64"\n" 252 , algname(i, aalgs, N(aalgs)) 253 , ahstats[AH_STAT_HIST + i] 254 ); 255 AHSTAT(ahstats[AH_STAT_IBYTES], "bytes received"); 256 AHSTAT(ahstats[AH_STAT_OBYTES], "bytes transmitted"); 257 #undef AHSTAT 258 printf("\n"); 259 260 printf("IPsec esp:\n"); 261 #define ESPSTAT(x,fmt) if ((x) || sflag <= 1) printf("\t%"PRIu64" esp " fmt "\n", x) 262 ESPSTAT(espstats[ESP_STAT_INPUT],"input packets processed"); 263 ESPSTAT(espstats[ESP_STAT_OUTPUT],"output packets processed"); 264 ESPSTAT(espstats[ESP_STAT_HDROPS],"headers too short"); 265 ESPSTAT(espstats[ESP_STAT_NOPF], "headers for unsupported address family"); 266 ESPSTAT(espstats[ESP_STAT_NOTDB],"packets with no SA"); 267 ESPSTAT(espstats[ESP_STAT_BADKCR],"packets dropped by crypto returning NULL mbuf"); 268 ESPSTAT(espstats[ESP_STAT_QFULL],"packets dropped due to queue full"); 269 ESPSTAT(espstats[ESP_STAT_NOXFORM],"packets with no xform"); 270 ESPSTAT(espstats[ESP_STAT_BADILEN],"packets with bad ilen"); 271 ESPSTAT(espstats[ESP_STAT_BADENC],"packets with bad encryption"); 272 ESPSTAT(espstats[ESP_STAT_BADAUTH],"packets with bad authentication"); 273 ESPSTAT(espstats[ESP_STAT_WRAP], "packets dropped for replay counter wrap"); 274 ESPSTAT(espstats[ESP_STAT_REPLAY],"packets dropped for possible replay"); 275 ESPSTAT(espstats[ESP_STAT_INVALID],"packets with an invalid SA"); 276 ESPSTAT(espstats[ESP_STAT_TOOBIG],"packets too big"); 277 ESPSTAT(espstats[ESP_STAT_PDROPS],"packets blocked due to policy"); 278 ESPSTAT(espstats[ESP_STAT_CRYPTO],"failed crypto requests"); 279 ESPSTAT(espstats[ESP_STAT_TUNNEL],"tunnel sanity check failures"); 280 printf("\tesp histogram:\n"); 281 for (i = 0; i < ESP_ALG_MAX; i++) 282 if (espstats[ESP_STAT_HIST + i]) 283 printf("\t\tesp packets with %s: %"PRIu64"\n" 284 , algname(i, espalgs, N(espalgs)) 285 , espstats[ESP_STAT_HIST + i] 286 ); 287 ESPSTAT(espstats[ESP_STAT_IBYTES], "bytes received"); 288 ESPSTAT(espstats[ESP_STAT_OBYTES], "bytes transmitted"); 289 #undef ESPSTAT 290 printf("IPsec ipip:\n"); 291 292 #define IPIPSTAT(x,fmt) \ 293 if ((x) || sflag <= 1) printf("\t%"PRIu64" ipip " fmt "\n", x) 294 IPIPSTAT(ipips[IPIP_STAT_IPACKETS],"total input packets"); 295 IPIPSTAT(ipips[IPIP_STAT_OPACKETS],"total output packets"); 296 IPIPSTAT(ipips[IPIP_STAT_HDROPS],"packets too short for header length"); 297 IPIPSTAT(ipips[IPIP_STAT_QFULL],"packets dropped due to queue full"); 298 IPIPSTAT(ipips[IPIP_STAT_PDROPS],"packets blocked due to policy"); 299 IPIPSTAT(ipips[IPIP_STAT_SPOOF],"IP spoofing attempts"); 300 IPIPSTAT(ipips[IPIP_STAT_FAMILY],"protocol family mismatched"); 301 IPIPSTAT(ipips[IPIP_STAT_UNSPEC],"missing tunnel-endpoint address"); 302 IPIPSTAT(ipips[IPIP_STAT_IBYTES],"input bytes received"); 303 IPIPSTAT(ipips[IPIP_STAT_OBYTES],"output bytes processed"); 304 #undef IPIPSTAT 305 306 printf("IPsec ipcomp:\n"); 307 #define IPCOMP(x,fmt) \ 308 if ((x) || sflag <= 1) printf("\t%"PRIu64" ipcomp " fmt "\n", x) 309 310 IPCOMP(ipcs[IPCOMP_STAT_HDROPS],"packets too short for header length"); 311 IPCOMP(ipcs[IPCOMP_STAT_NOPF], "protocol family not supported"); 312 IPCOMP(ipcs[IPCOMP_STAT_NOTDB], "not db"); 313 IPCOMP(ipcs[IPCOMP_STAT_BADKCR],"packets dropped by crypto returning NULL mbuf"); 314 IPCOMP(ipcs[IPCOMP_STAT_QFULL], "queue full"); 315 IPCOMP(ipcs[IPCOMP_STAT_NOXFORM],"no support for transform"); 316 IPCOMP(ipcs[IPCOMP_STAT_WRAP], "packets dropped for replay counter wrap"); 317 IPCOMP(ipcs[IPCOMP_STAT_INPUT], "input IPcomp packets"); 318 IPCOMP(ipcs[IPCOMP_STAT_OUTPUT],"output IPcomp packets"); 319 IPCOMP(ipcs[IPCOMP_STAT_INVALID],"specified an invalid TDB"); 320 IPCOMP(ipcs[IPCOMP_STAT_TOOBIG],"packets decompressed as too big"); 321 IPCOMP(ipcs[IPCOMP_STAT_MINLEN], "packets too short to be compressed"); 322 IPCOMP(ipcs[IPCOMP_STAT_USELESS],"packet for which compression was useless"); 323 IPCOMP(ipcs[IPCOMP_STAT_PDROPS],"packets blocked due to policy"); 324 IPCOMP(ipcs[IPCOMP_STAT_CRYPTO],"failed crypto requests"); 325 326 printf("\tIPcomp histogram:\n"); 327 for (i = 0; i < IPCOMP_ALG_MAX; i++) 328 if (ipcs[IPCOMP_STAT_HIST + i]) 329 printf("\t\tIPcomp packets with %s: %"PRIu64"\n" 330 , algname(i, ipcompalgs, N(ipcompalgs)) 331 , ipcs[IPCOMP_STAT_HIST + i] 332 ); 333 IPCOMP(ipcs[IPCOMP_STAT_IBYTES],"input bytes"); 334 IPCOMP(ipcs[IPCOMP_STAT_OBYTES],"output bytes"); 335 #undef IPCOMP 336 } 337
Indexes created Wed Sep 24 05:09:52 GMT 2025