1/* $KAME: ipsec.c,v 1.33 2003/07/25 09:54:32 itojun Exp $ */ 2 3/*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (c) 2005 NTT Multimedia Communications Laboratories, Inc. 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/*- 31 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project. 32 * All rights reserved. 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 3. Neither the name of the project nor the names of its contributors 43 * may be used to endorse or promote products derived from this software 44 * without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 49 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 56 * SUCH DAMAGE. 57 */ 58/*- 59 * Copyright (c) 1983, 1988, 1993 60 * The Regents of the University of California. All rights reserved. 61 * 62 * Redistribution and use in source and binary forms, with or without 63 * modification, are permitted provided that the following conditions 64 * are met: 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 2. Redistributions in binary form must reproduce the above copyright 68 * notice, this list of conditions and the following disclaimer in the 69 * documentation and/or other materials provided with the distribution. 70 * 3. Neither the name of the University nor the names of its contributors 71 * may be used to endorse or promote products derived from this software 72 * without specific prior written permission. 73 * 74 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 75 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 76 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 77 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 78 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 79 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 80 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 81 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 82 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 83 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 84 * SUCH DAMAGE. 85 */ 86 87#if 0 88#ifndef lint 89static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95"; 90#endif /* not lint */ 91#endif 92 93#include <sys/cdefs.h> 94__FBSDID("$FreeBSD$"); 95 96#include <sys/param.h> 97#include <sys/queue.h> 98#include <sys/socket.h> 99#include <sys/socketvar.h> 100 101#include <netinet/in.h> 102 103#ifdef IPSEC 104#include <netipsec/ipsec.h> 105#include <netipsec/ah_var.h> 106#include <netipsec/esp_var.h> 107#include <netipsec/ipcomp_var.h> 108#endif 109 110#include <stdint.h> 111#include <stdio.h> 112#include <stdbool.h> 113#include <string.h> 114#include <unistd.h> 115#include <libxo/xo.h> 116#include "netstat.h" 117 118#ifdef IPSEC 119struct val2str { 120 int val; 121 const char *str; 122}; 123 124static struct val2str ipsec_ahnames[] = { 125 { SADB_AALG_NONE, "none", }, 126 { SADB_AALG_SHA1HMAC, "hmac-sha1", }, 127 { SADB_X_AALG_NULL, "null", }, 128 { SADB_X_AALG_SHA2_256, "hmac-sha2-256", }, 129 { SADB_X_AALG_SHA2_384, "hmac-sha2-384", }, 130 { SADB_X_AALG_SHA2_512, "hmac-sha2-512", }, 131 { SADB_X_AALG_AES_XCBC_MAC, "aes-xcbc-mac", }, 132 { SADB_X_AALG_TCP_MD5, "tcp-md5", }, 133 { SADB_X_AALG_AES128GMAC, "aes-gmac-128", }, 134 { SADB_X_AALG_AES192GMAC, "aes-gmac-192", }, 135 { SADB_X_AALG_AES256GMAC, "aes-gmac-256", }, 136 { -1, NULL }, 137}; 138 139static struct val2str ipsec_espnames[] = { 140 { SADB_EALG_NONE, "none", }, 141 { SADB_EALG_NULL, "null", }, 142 { SADB_X_EALG_AESCBC, "aes-cbc", }, 143 { SADB_X_EALG_AESCTR, "aes-ctr", }, 144 { SADB_X_EALG_AESGCM16, "aes-gcm-16", }, 145 { SADB_X_EALG_AESGMAC, "aes-gmac", }, 146 { -1, NULL }, 147}; 148 149static struct val2str ipsec_compnames[] = { 150 { SADB_X_CALG_NONE, "none", }, 151 { SADB_X_CALG_OUI, "oui", }, 152 { SADB_X_CALG_DEFLATE, "deflate", }, 153 { SADB_X_CALG_LZS, "lzs", }, 154 { -1, NULL }, 155}; 156 157static void print_ipsecstats(const struct ipsecstat *ipsecstat); 158 159static void 160print_ipsecstats(const struct ipsecstat *ipsecstat) 161{ 162 xo_open_container("ipsec-statistics"); 163 164#define p(f, m) if (ipsecstat->f || sflag <= 1) \ 165 xo_emit(m, (uintmax_t)ipsecstat->f, plural(ipsecstat->f)) 166#define p2(f, m) if (ipsecstat->f || sflag <= 1) \ 167 xo_emit(m, (uintmax_t)ipsecstat->f, plurales(ipsecstat->f)) 168 169 p(ips_in_polvio, "\t{:dropped-policy-violation/%ju} " 170 "{N:/inbound packet%s violated process security policy}\n"); 171 p(ips_in_nomem, "\t{:dropped-no-memory/%ju} " 172 "{N:/inbound packet%s failed due to insufficient memory}\n"); 173 p(ips_in_inval, "\t{:dropped-invalid/%ju} " 174 "{N:/invalid inbound packet%s}\n"); 175 p(ips_out_polvio, "\t{:discarded-policy-violation/%ju} " 176 "{N:/outbound packet%s violated process security policy}\n"); 177 p(ips_out_nosa, "\t{:discarded-no-sa/%ju} " 178 "{N:/outbound packet%s with no SA available}\n"); 179 p(ips_out_nomem, "\t{:discarded-no-memory/%ju} " 180 "{N:/outbound packet%s failed due to insufficient memory}\n"); 181 p(ips_out_noroute, "\t{:discarded-no-route/%ju} " 182 "{N:/outbound packet%s with no route available}\n"); 183 p(ips_out_inval, "\t{:discarded-invalid/%ju} " 184 "{N:/invalid outbound packet%s}\n"); 185 p(ips_out_bundlesa, "\t{:send-bundled-sa/%ju} " 186 "{N:/outbound packet%s with bundled SAs}\n"); 187 p(ips_spdcache_hits, "\t{:spdcache-hits/%ju} " 188 "{N:/spd cache hit%s}\n"); 189 p2(ips_spdcache_misses, "\t{:spdcache-misses/%ju} " 190 "{N:/spd cache miss%s}\n"); 191 p(ips_clcopied, "\t{:clusters-copied-during-clone/%ju} " 192 "{N:/cluster%s copied during clone}\n"); 193 p(ips_mbinserted, "\t{:mbufs-inserted/%ju} " 194 "{N:/mbuf%s inserted during makespace}\n"); 195#undef p2 196#undef p 197 xo_close_container("ipsec-statistics"); 198} 199 200void 201ipsec_stats(u_long off, const char *name, int af1 __unused, int proto __unused) 202{ 203 struct ipsecstat ipsecstat; 204 205 if (strcmp(name, "ipsec6") == 0) { 206 if (fetch_stats("net.inet6.ipsec6.ipsecstats", off,&ipsecstat, 207 sizeof(ipsecstat), kread_counters) != 0) 208 return; 209 } else { 210 if (fetch_stats("net.inet.ipsec.ipsecstats", off, &ipsecstat, 211 sizeof(ipsecstat), kread_counters) != 0) 212 return; 213 } 214 215 xo_emit("{T:/%s}:\n", name); 216 217 print_ipsecstats(&ipsecstat); 218} 219 220 221static void print_ahstats(const struct ahstat *ahstat); 222static void print_espstats(const struct espstat *espstat); 223static void print_ipcompstats(const struct ipcompstat *ipcompstat); 224 225/* 226 * Dump IPSEC statistics structure. 227 */ 228static void 229ipsec_hist_new(const uint64_t *hist, size_t histmax, 230 const struct val2str *name, const char *title, const char *cname) 231{ 232 int first; 233 size_t proto; 234 const struct val2str *p; 235 236 first = 1; 237 for (proto = 0; proto < histmax; proto++) { 238 if (hist[proto] <= 0) 239 continue; 240 if (first) { 241 xo_open_list(cname); 242 xo_emit("\t{T:/%s histogram}:\n", title); 243 first = 0; 244 } 245 xo_open_instance(cname); 246 for (p = name; p && p->str; p++) { 247 if (p->val == (int)proto) 248 break; 249 } 250 if (p && p->str) { 251 xo_emit("\t\t{k:name}: {:count/%ju}\n", p->str, 252 (uintmax_t)hist[proto]); 253 } else { 254 xo_emit("\t\t#{k:name/%lu}: {:count/%ju}\n", 255 (unsigned long)proto, (uintmax_t)hist[proto]); 256 } 257 xo_close_instance(cname); 258 } 259 if (!first) 260 xo_close_list(cname); 261} 262 263static void 264print_ahstats(const struct ahstat *ahstat) 265{ 266 xo_open_container("ah-statictics"); 267 268#define p(f, n, m) if (ahstat->f || sflag <= 1) \ 269 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 270 (uintmax_t)ahstat->f, plural(ahstat->f)) 271#define hist(f, n, t, c) \ 272 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)) 273 274 p(ahs_hdrops, "dropped-short-header", 275 "packet%s shorter than header shows"); 276 p(ahs_nopf, "dropped-bad-protocol", 277 "packet%s dropped; protocol family not supported"); 278 p(ahs_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 279 p(ahs_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 280 p(ahs_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 281 p(ahs_noxform, "dropped-no-transform", 282 "packet%s dropped; no transform"); 283 p(ahs_wrap, "replay-counter-wraps", "replay counter wrap%s"); 284 p(ahs_badauth, "dropped-bad-auth", 285 "packet%s dropped; bad authentication detected"); 286 p(ahs_badauthl, "dropped-bad-auth-level", 287 "packet%s dropped; bad authentication length"); 288 p(ahs_replay, "possile-replay-detected", 289 "possible replay packet%s detected"); 290 p(ahs_input, "received-packets", "packet%s in"); 291 p(ahs_output, "send-packets", "packet%s out"); 292 p(ahs_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 293 p(ahs_ibytes, "received-bytes", "byte%s in"); 294 p(ahs_obytes, "send-bytes", "byte%s out"); 295 p(ahs_toobig, "dropped-too-large", 296 "packet%s dropped; larger than IP_MAXPACKET"); 297 p(ahs_pdrops, "dropped-policy-violation", 298 "packet%s blocked due to policy"); 299 p(ahs_crypto, "crypto-failures", "crypto processing failure%s"); 300 p(ahs_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 301 hist(ahstat->ahs_hist, ipsec_ahnames, 302 "AH output", "ah-output-histogram"); 303 304#undef p 305#undef hist 306 xo_close_container("ah-statictics"); 307} 308 309void 310ah_stats(u_long off, const char *name, int family __unused, int proto __unused) 311{ 312 struct ahstat ahstat; 313 314 if (fetch_stats("net.inet.ah.stats", off, &ahstat, 315 sizeof(ahstat), kread_counters) != 0) 316 return; 317 318 xo_emit("{T:/%s}:\n", name); 319 320 print_ahstats(&ahstat); 321} 322 323static void 324print_espstats(const struct espstat *espstat) 325{ 326 xo_open_container("esp-statictics"); 327#define p(f, n, m) if (espstat->f || sflag <= 1) \ 328 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 329 (uintmax_t)espstat->f, plural(espstat->f)) 330#define hist(f, n, t, c) \ 331 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 332 333 p(esps_hdrops, "dropped-short-header", 334 "packet%s shorter than header shows"); 335 p(esps_nopf, "dropped-bad-protocol", 336 "packet%s dropped; protocol family not supported"); 337 p(esps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 338 p(esps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 339 p(esps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 340 p(esps_noxform, "dropped-no-transform", 341 "packet%s dropped; no transform"); 342 p(esps_badilen, "dropped-bad-length", "packet%s dropped; bad ilen"); 343 p(esps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 344 p(esps_badenc, "dropped-bad-crypto", 345 "packet%s dropped; bad encryption detected"); 346 p(esps_badauth, "dropped-bad-auth", 347 "packet%s dropped; bad authentication detected"); 348 p(esps_replay, "possible-replay-detected", 349 "possible replay packet%s detected"); 350 p(esps_input, "received-packets", "packet%s in"); 351 p(esps_output, "sent-packets", "packet%s out"); 352 p(esps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 353 p(esps_ibytes, "receieve-bytes", "byte%s in"); 354 p(esps_obytes, "sent-bytes", "byte%s out"); 355 p(esps_toobig, "dropped-too-large", 356 "packet%s dropped; larger than IP_MAXPACKET"); 357 p(esps_pdrops, "dropped-policy-violation", 358 "packet%s blocked due to policy"); 359 p(esps_crypto, "crypto-failures", "crypto processing failure%s"); 360 p(esps_tunnel, "tunnel-failures", "tunnel sanity check failure%s"); 361 hist(espstat->esps_hist, ipsec_espnames, 362 "ESP output", "esp-output-histogram"); 363 364#undef p 365#undef hist 366 xo_close_container("esp-statictics"); 367} 368 369void 370esp_stats(u_long off, const char *name, int family __unused, int proto __unused) 371{ 372 struct espstat espstat; 373 374 if (fetch_stats("net.inet.esp.stats", off, &espstat, 375 sizeof(espstat), kread_counters) != 0) 376 return; 377 378 xo_emit("{T:/%s}:\n", name); 379 380 print_espstats(&espstat); 381} 382 383static void 384print_ipcompstats(const struct ipcompstat *ipcompstat) 385{ 386 xo_open_container("ipcomp-statictics"); 387 388#define p(f, n, m) if (ipcompstat->f || sflag <= 1) \ 389 xo_emit("\t{:" n "/%ju} {N:/" m "}\n", \ 390 (uintmax_t)ipcompstat->f, plural(ipcompstat->f)) 391#define hist(f, n, t, c) \ 392 ipsec_hist_new((f), sizeof(f)/sizeof(f[0]), (n), (t), (c)); 393 394 p(ipcomps_hdrops, "dropped-short-header", 395 "packet%s shorter than header shows"); 396 p(ipcomps_nopf, "dropped-bad-protocol", 397 "packet%s dropped; protocol family not supported"); 398 p(ipcomps_notdb, "dropped-no-tdb", "packet%s dropped; no TDB"); 399 p(ipcomps_badkcr, "dropped-bad-kcr", "packet%s dropped; bad KCR"); 400 p(ipcomps_qfull, "dropped-queue-full", "packet%s dropped; queue full"); 401 p(ipcomps_noxform, "dropped-no-transform", 402 "packet%s dropped; no transform"); 403 p(ipcomps_wrap, "replay-counter-wraps", "replay counter wrap%s"); 404 p(ipcomps_input, "receieve-packets", "packet%s in"); 405 p(ipcomps_output, "sent-packets", "packet%s out"); 406 p(ipcomps_invalid, "dropped-bad-tdb", "packet%s dropped; invalid TDB"); 407 p(ipcomps_ibytes, "receieved-bytes", "byte%s in"); 408 p(ipcomps_obytes, "sent-bytes", "byte%s out"); 409 p(ipcomps_toobig, "dropped-too-large", 410 "packet%s dropped; larger than IP_MAXPACKET"); 411 p(ipcomps_pdrops, "dropped-policy-violation", 412 "packet%s blocked due to policy"); 413 p(ipcomps_crypto, "crypto-failure", "crypto processing failure%s"); 414 hist(ipcompstat->ipcomps_hist, ipsec_compnames, 415 "COMP output", "comp-output-histogram"); 416 p(ipcomps_threshold, "sent-uncompressed-small-packets", 417 "packet%s sent uncompressed; size < compr. algo. threshold"); 418 p(ipcomps_uncompr, "sent-uncompressed-useless-packets", 419 "packet%s sent uncompressed; compression was useless"); 420 421#undef p 422#undef hist 423 xo_close_container("ipcomp-statictics"); 424} 425 426void 427ipcomp_stats(u_long off, const char *name, int family __unused, 428 int proto __unused) 429{ 430 struct ipcompstat ipcompstat; 431 432 if (fetch_stats("net.inet.ipcomp.stats", off, &ipcompstat, 433 sizeof(ipcompstat), kread_counters) != 0) 434 return; 435 436 xo_emit("{T:/%s}:\n", name); 437 438 print_ipcompstats(&ipcompstat); 439} 440 441#endif /*IPSEC*/ 442