print-ospf.c revision 1.1.1.10
1 /* 2 * Copyright (c) 1992, 1993, 1994, 1995, 1996, 1997 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that: (1) source code distributions 7 * retain the above copyright notice and this paragraph in its entirety, (2) 8 * distributions including binary code include the above copyright notice and 9 * this paragraph in its entirety in the documentation or other materials 10 * provided with the distribution, and (3) all advertising materials mentioning 11 * features or use of this software display the following acknowledgement: 12 * ``This product includes software developed by the University of California, 13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of 14 * the University nor the names of its contributors may be used to endorse 15 * or promote products derived from this software without specific prior 16 * written permission. 17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED 18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 20 * 21 * OSPF support contributed by Jeffrey Honig (jch (at) mitchell.cit.cornell.edu) 22 */ 23 24 /* \summary: Open Shortest Path First (OSPF) printer */ 25 26 #include <config.h> 27 28 #include "netdissect-stdinc.h" 29 30 #include "netdissect.h" 31 #include "addrtoname.h" 32 #include "extract.h" 33 #include "gmpls.h" 34 35 #include "ospf.h" 36 37 38 static const struct tok ospf_option_values[] = { 39 { OSPF_OPTION_MT, "MultiTopology" }, /* draft-ietf-ospf-mt-09 */ 40 { OSPF_OPTION_E, "External" }, 41 { OSPF_OPTION_MC, "Multicast" }, 42 { OSPF_OPTION_NP, "NSSA" }, 43 { OSPF_OPTION_L, "LLS" }, 44 { OSPF_OPTION_DC, "Demand Circuit" }, 45 { OSPF_OPTION_O, "Opaque" }, 46 { OSPF_OPTION_DN, "Up/Down" }, 47 { 0, NULL } 48 }; 49 50 static const struct tok ospf_authtype_values[] = { 51 { OSPF_AUTH_NONE, "none" }, 52 { OSPF_AUTH_SIMPLE, "simple" }, 53 { OSPF_AUTH_MD5, "MD5" }, 54 { 0, NULL } 55 }; 56 57 static const struct tok ospf_rla_flag_values[] = { 58 { RLA_FLAG_B, "ABR" }, 59 { RLA_FLAG_E, "ASBR" }, 60 { RLA_FLAG_V, "Virtual" }, 61 { RLA_FLAG_W, "Wildcard" }, 62 { RLA_FLAG_NT, "Nt" }, 63 { RLA_FLAG_H, "Host" }, 64 { 0, NULL } 65 }; 66 67 static const struct tok type2str[] = { 68 { OSPF_TYPE_HELLO, "Hello" }, 69 { OSPF_TYPE_DD, "Database Description" }, 70 { OSPF_TYPE_LS_REQ, "LS-Request" }, 71 { OSPF_TYPE_LS_UPDATE, "LS-Update" }, 72 { OSPF_TYPE_LS_ACK, "LS-Ack" }, 73 { 0, NULL } 74 }; 75 76 static const struct tok lsa_values[] = { 77 { LS_TYPE_ROUTER, "Router" }, 78 { LS_TYPE_NETWORK, "Network" }, 79 { LS_TYPE_SUM_IP, "Summary" }, 80 { LS_TYPE_SUM_ABR, "ASBR Summary" }, 81 { LS_TYPE_ASE, "External" }, 82 { LS_TYPE_GROUP, "Multicast Group" }, 83 { LS_TYPE_NSSA, "NSSA" }, 84 { LS_TYPE_OPAQUE_LL, "Link Local Opaque" }, 85 { LS_TYPE_OPAQUE_AL, "Area Local Opaque" }, 86 { LS_TYPE_OPAQUE_DW, "Domain Wide Opaque" }, 87 { 0, NULL } 88 }; 89 90 static const struct tok ospf_dd_flag_values[] = { 91 { OSPF_DB_INIT, "Init" }, 92 { OSPF_DB_MORE, "More" }, 93 { OSPF_DB_MASTER, "Master" }, 94 { OSPF_DB_RESYNC, "OOBResync" }, 95 { 0, NULL } 96 }; 97 98 static const struct tok lsa_opaque_values[] = { 99 { LS_OPAQUE_TYPE_TE, "Traffic Engineering" }, 100 { LS_OPAQUE_TYPE_GRACE, "Graceful restart" }, 101 { LS_OPAQUE_TYPE_RI, "Router Information" }, 102 { 0, NULL } 103 }; 104 105 static const struct tok lsa_opaque_te_tlv_values[] = { 106 { LS_OPAQUE_TE_TLV_ROUTER, "Router Address" }, 107 { LS_OPAQUE_TE_TLV_LINK, "Link" }, 108 { 0, NULL } 109 }; 110 111 static const struct tok lsa_opaque_te_link_tlv_subtlv_values[] = { 112 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE, "Link Type" }, 113 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID, "Link ID" }, 114 { LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP, "Local Interface IP address" }, 115 { LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP, "Remote Interface IP address" }, 116 { LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC, "Traffic Engineering Metric" }, 117 { LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW, "Maximum Bandwidth" }, 118 { LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW, "Maximum Reservable Bandwidth" }, 119 { LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW, "Unreserved Bandwidth" }, 120 { LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP, "Administrative Group" }, 121 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID, "Link Local/Remote Identifier" }, 122 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE, "Link Protection Type" }, 123 { LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR, "Interface Switching Capability" }, 124 { LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP, "Shared Risk Link Group" }, 125 { LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS, "Bandwidth Constraints" }, 126 { 0, NULL } 127 }; 128 129 static const struct tok lsa_opaque_grace_tlv_values[] = { 130 { LS_OPAQUE_GRACE_TLV_PERIOD, "Grace Period" }, 131 { LS_OPAQUE_GRACE_TLV_REASON, "Graceful restart Reason" }, 132 { LS_OPAQUE_GRACE_TLV_INT_ADDRESS, "IPv4 interface address" }, 133 { 0, NULL } 134 }; 135 136 static const struct tok lsa_opaque_grace_tlv_reason_values[] = { 137 { LS_OPAQUE_GRACE_TLV_REASON_UNKNOWN, "Unknown" }, 138 { LS_OPAQUE_GRACE_TLV_REASON_SW_RESTART, "Software Restart" }, 139 { LS_OPAQUE_GRACE_TLV_REASON_SW_UPGRADE, "Software Reload/Upgrade" }, 140 { LS_OPAQUE_GRACE_TLV_REASON_CP_SWITCH, "Control Processor Switch" }, 141 { 0, NULL } 142 }; 143 144 static const struct tok lsa_opaque_te_tlv_link_type_sub_tlv_values[] = { 145 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_PTP, "Point-to-point" }, 146 { LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE_MA, "Multi-Access" }, 147 { 0, NULL } 148 }; 149 150 static const struct tok lsa_opaque_ri_tlv_values[] = { 151 { LS_OPAQUE_RI_TLV_CAP, "Router Capabilities" }, 152 { 0, NULL } 153 }; 154 155 static const struct tok lsa_opaque_ri_tlv_cap_values[] = { 156 { 1, "Reserved" }, 157 { 2, "Reserved" }, 158 { 4, "Reserved" }, 159 { 8, "Reserved" }, 160 { 16, "graceful restart capable" }, 161 { 32, "graceful restart helper" }, 162 { 64, "Stub router support" }, 163 { 128, "Traffic engineering" }, 164 { 256, "p2p over LAN" }, 165 { 512, "path computation server" }, 166 { 0, NULL } 167 }; 168 169 static const struct tok ospf_lls_tlv_values[] = { 170 { OSPF_LLS_EO, "Extended Options" }, 171 { OSPF_LLS_MD5, "MD5 Authentication" }, 172 { 0, NULL } 173 }; 174 175 static const struct tok ospf_lls_eo_options[] = { 176 { OSPF_LLS_EO_LR, "LSDB resync" }, 177 { OSPF_LLS_EO_RS, "Restart" }, 178 { 0, NULL } 179 }; 180 181 int 182 ospf_grace_lsa_print(netdissect_options *ndo, 183 const u_char *tptr, u_int ls_length) 184 { 185 u_int tlv_type, tlv_length; 186 187 188 while (ls_length > 0) { 189 ND_TCHECK_4(tptr); 190 if (ls_length < 4) { 191 ND_PRINT("\n\t Remaining LS length %u < 4", ls_length); 192 return -1; 193 } 194 tlv_type = GET_BE_U_2(tptr); 195 tlv_length = GET_BE_U_2(tptr + 2); 196 tptr+=4; 197 ls_length-=4; 198 199 ND_PRINT("\n\t %s TLV (%u), length %u, value: ", 200 tok2str(lsa_opaque_grace_tlv_values,"unknown",tlv_type), 201 tlv_type, 202 tlv_length); 203 204 if (tlv_length > ls_length) { 205 ND_PRINT("\n\t Bogus length %u > %u", tlv_length, 206 ls_length); 207 return -1; 208 } 209 210 /* Infinite loop protection. */ 211 if (tlv_type == 0 || tlv_length ==0) { 212 return -1; 213 } 214 215 ND_TCHECK_LEN(tptr, tlv_length); 216 switch(tlv_type) { 217 218 case LS_OPAQUE_GRACE_TLV_PERIOD: 219 if (tlv_length != 4) { 220 ND_PRINT("\n\t Bogus length %u != 4", tlv_length); 221 return -1; 222 } 223 ND_PRINT("%us", GET_BE_U_4(tptr)); 224 break; 225 226 case LS_OPAQUE_GRACE_TLV_REASON: 227 if (tlv_length != 1) { 228 ND_PRINT("\n\t Bogus length %u != 1", tlv_length); 229 return -1; 230 } 231 ND_PRINT("%s (%u)", 232 tok2str(lsa_opaque_grace_tlv_reason_values, "Unknown", GET_U_1(tptr)), 233 GET_U_1(tptr)); 234 break; 235 236 case LS_OPAQUE_GRACE_TLV_INT_ADDRESS: 237 if (tlv_length != 4) { 238 ND_PRINT("\n\t Bogus length %u != 4", tlv_length); 239 return -1; 240 } 241 ND_PRINT("%s", GET_IPADDR_STRING(tptr)); 242 break; 243 244 default: 245 if (ndo->ndo_vflag <= 1) { 246 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length)) 247 return -1; 248 } 249 break; 250 251 } 252 /* in OSPF everything has to be 32-bit aligned, including TLVs */ 253 if (tlv_length%4 != 0) 254 tlv_length+=4-(tlv_length%4); 255 ls_length-=tlv_length; 256 tptr+=tlv_length; 257 } 258 259 return 0; 260 trunc: 261 return -1; 262 } 263 264 int 265 ospf_te_lsa_print(netdissect_options *ndo, 266 const u_char *tptr, u_int ls_length) 267 { 268 u_int tlv_type, tlv_length, subtlv_type, subtlv_length; 269 u_int priority_level, te_class, count_srlg; 270 union { /* int to float conversion buffer for several subTLVs */ 271 float f; 272 uint32_t i; 273 } bw; 274 275 while (ls_length != 0) { 276 ND_TCHECK_4(tptr); 277 if (ls_length < 4) { 278 ND_PRINT("\n\t Remaining LS length %u < 4", ls_length); 279 return -1; 280 } 281 tlv_type = GET_BE_U_2(tptr); 282 tlv_length = GET_BE_U_2(tptr + 2); 283 tptr+=4; 284 ls_length-=4; 285 286 ND_PRINT("\n\t %s TLV (%u), length: %u", 287 tok2str(lsa_opaque_te_tlv_values,"unknown",tlv_type), 288 tlv_type, 289 tlv_length); 290 291 if (tlv_length > ls_length) { 292 ND_PRINT("\n\t Bogus length %u > %u", tlv_length, 293 ls_length); 294 return -1; 295 } 296 297 /* Infinite loop protection. */ 298 if (tlv_type == 0 || tlv_length ==0) { 299 return -1; 300 } 301 302 switch(tlv_type) { 303 case LS_OPAQUE_TE_TLV_LINK: 304 while (tlv_length != 0) { 305 if (tlv_length < 4) { 306 ND_PRINT("\n\t Remaining TLV length %u < 4", 307 tlv_length); 308 return -1; 309 } 310 subtlv_type = GET_BE_U_2(tptr); 311 subtlv_length = GET_BE_U_2(tptr + 2); 312 tptr+=4; 313 tlv_length-=4; 314 315 /* Infinite loop protection */ 316 if (subtlv_type == 0 || subtlv_length == 0) 317 goto invalid; 318 319 ND_PRINT("\n\t %s subTLV (%u), length: %u", 320 tok2str(lsa_opaque_te_link_tlv_subtlv_values,"unknown",subtlv_type), 321 subtlv_type, 322 subtlv_length); 323 324 if (tlv_length < subtlv_length) { 325 ND_PRINT("\n\t Remaining TLV length %u < %u", 326 tlv_length + 4, subtlv_length + 4); 327 return -1; 328 } 329 ND_TCHECK_LEN(tptr, subtlv_length); 330 switch(subtlv_type) { 331 case LS_OPAQUE_TE_LINK_SUBTLV_ADMIN_GROUP: 332 if (subtlv_length != 4) { 333 ND_PRINT(" != 4"); 334 goto invalid; 335 } 336 ND_PRINT(", 0x%08x", GET_BE_U_4(tptr)); 337 break; 338 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_ID: 339 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_LOCAL_REMOTE_ID: 340 if (subtlv_length != 4 && subtlv_length != 8) { 341 ND_PRINT(" != 4 && != 8"); 342 goto invalid; 343 } 344 ND_PRINT(", %s (0x%08x)", 345 GET_IPADDR_STRING(tptr), 346 GET_BE_U_4(tptr)); 347 if (subtlv_length == 8) /* rfc4203 */ 348 ND_PRINT(", %s (0x%08x)", 349 GET_IPADDR_STRING(tptr+4), 350 GET_BE_U_4(tptr + 4)); 351 break; 352 case LS_OPAQUE_TE_LINK_SUBTLV_LOCAL_IP: 353 case LS_OPAQUE_TE_LINK_SUBTLV_REMOTE_IP: 354 if (subtlv_length != 4) { 355 ND_PRINT(" != 4"); 356 goto invalid; 357 } 358 ND_PRINT(", %s", GET_IPADDR_STRING(tptr)); 359 break; 360 case LS_OPAQUE_TE_LINK_SUBTLV_MAX_BW: 361 case LS_OPAQUE_TE_LINK_SUBTLV_MAX_RES_BW: 362 if (subtlv_length != 4) { 363 ND_PRINT(" != 4"); 364 goto invalid; 365 } 366 bw.i = GET_BE_U_4(tptr); 367 ND_PRINT(", %.3f Mbps", bw.f * 8 / 1000000); 368 break; 369 case LS_OPAQUE_TE_LINK_SUBTLV_UNRES_BW: 370 if (subtlv_length != 32) { 371 ND_PRINT(" != 32"); 372 goto invalid; 373 } 374 for (te_class = 0; te_class < 8; te_class++) { 375 bw.i = GET_BE_U_4(tptr + te_class * 4); 376 ND_PRINT("\n\t\tTE-Class %u: %.3f Mbps", 377 te_class, 378 bw.f * 8 / 1000000); 379 } 380 break; 381 case LS_OPAQUE_TE_LINK_SUBTLV_BW_CONSTRAINTS: 382 if (subtlv_length < 4) { 383 ND_PRINT(" < 4"); 384 goto invalid; 385 } 386 /* BC Model Id (1 octet) + Reserved (3 octets) */ 387 ND_PRINT("\n\t\tBandwidth Constraints Model ID: %s (%u)", 388 tok2str(diffserv_te_bc_values, "unknown", GET_U_1(tptr)), 389 GET_U_1(tptr)); 390 if (subtlv_length % 4 != 0) { 391 ND_PRINT("\n\t\tlength %u != N x 4", subtlv_length); 392 goto invalid; 393 } 394 if (subtlv_length > 36) { 395 ND_PRINT("\n\t\tlength %u > 36", subtlv_length); 396 goto invalid; 397 } 398 /* decode BCs until the subTLV ends */ 399 for (te_class = 0; te_class < (subtlv_length-4)/4; te_class++) { 400 bw.i = GET_BE_U_4(tptr + 4 + te_class * 4); 401 ND_PRINT("\n\t\t Bandwidth constraint CT%u: %.3f Mbps", 402 te_class, 403 bw.f * 8 / 1000000); 404 } 405 break; 406 case LS_OPAQUE_TE_LINK_SUBTLV_TE_METRIC: 407 if (subtlv_length != 4) { 408 ND_PRINT(" != 4"); 409 goto invalid; 410 } 411 ND_PRINT(", Metric %u", GET_BE_U_4(tptr)); 412 break; 413 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_PROTECTION_TYPE: 414 /* Protection Cap (1 octet) + Reserved ((3 octets) */ 415 if (subtlv_length != 4) { 416 ND_PRINT(" != 4"); 417 goto invalid; 418 } 419 ND_PRINT(", %s", 420 bittok2str(gmpls_link_prot_values, "none", GET_U_1(tptr))); 421 break; 422 case LS_OPAQUE_TE_LINK_SUBTLV_INTF_SW_CAP_DESCR: 423 if (subtlv_length < 36) { 424 ND_PRINT(" < 36"); 425 goto invalid; 426 } 427 /* Switching Cap (1 octet) + Encoding (1) + Reserved (2) */ 428 ND_PRINT("\n\t\tInterface Switching Capability: %s", 429 tok2str(gmpls_switch_cap_values, "Unknown", GET_U_1((tptr)))); 430 ND_PRINT("\n\t\tLSP Encoding: %s\n\t\tMax LSP Bandwidth:", 431 tok2str(gmpls_encoding_values, "Unknown", GET_U_1((tptr + 1)))); 432 for (priority_level = 0; priority_level < 8; priority_level++) { 433 bw.i = GET_BE_U_4(tptr + 4 + (priority_level * 4)); 434 ND_PRINT("\n\t\t priority level %u: %.3f Mbps", 435 priority_level, 436 bw.f * 8 / 1000000); 437 } 438 break; 439 case LS_OPAQUE_TE_LINK_SUBTLV_LINK_TYPE: 440 if (subtlv_length != 1) { 441 ND_PRINT(" != 1"); 442 goto invalid; 443 } 444 ND_PRINT(", %s (%u)", 445 tok2str(lsa_opaque_te_tlv_link_type_sub_tlv_values,"unknown",GET_U_1(tptr)), 446 GET_U_1(tptr)); 447 break; 448 449 case LS_OPAQUE_TE_LINK_SUBTLV_SHARED_RISK_GROUP: 450 if (subtlv_length % 4 != 0) { 451 ND_PRINT(" != N x 4"); 452 goto invalid; 453 } 454 count_srlg = subtlv_length / 4; 455 if (count_srlg != 0) 456 ND_PRINT("\n\t\t Shared risk group: "); 457 while (count_srlg > 0) { 458 bw.i = GET_BE_U_4(tptr); 459 ND_PRINT("%u", bw.i); 460 tptr+=4; 461 count_srlg--; 462 if (count_srlg > 0) 463 ND_PRINT(", "); 464 } 465 break; 466 467 default: 468 if (ndo->ndo_vflag <= 1) { 469 if (!print_unknown_data(ndo, tptr, "\n\t\t", subtlv_length)) 470 return -1; 471 } 472 break; 473 } 474 /* in OSPF everything has to be 32-bit aligned, including subTLVs */ 475 if (subtlv_length%4 != 0) 476 subtlv_length+=4-(subtlv_length%4); 477 478 if (tlv_length < subtlv_length) { 479 ND_PRINT("\n\t Remaining TLV length %u < %u", 480 tlv_length + 4, subtlv_length + 4); 481 return -1; 482 } 483 tlv_length-=subtlv_length; 484 tptr+=subtlv_length; 485 486 } 487 break; 488 489 case LS_OPAQUE_TE_TLV_ROUTER: 490 if (tlv_length < 4) { 491 ND_PRINT("\n\t TLV length %u < 4", tlv_length); 492 return -1; 493 } 494 ND_PRINT(", %s", GET_IPADDR_STRING(tptr)); 495 break; 496 497 default: 498 if (ndo->ndo_vflag <= 1) { 499 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length)) 500 return -1; 501 } 502 break; 503 } 504 /* in OSPF everything has to be 32-bit aligned, including TLVs */ 505 if (tlv_length%4 != 0) 506 tlv_length+=4-(tlv_length%4); 507 if (tlv_length > ls_length) { 508 ND_PRINT("\n\t Bogus padded length %u > %u", tlv_length, 509 ls_length); 510 return -1; 511 } 512 ls_length-=tlv_length; 513 tptr+=tlv_length; 514 } 515 return 0; 516 trunc: 517 return -1; 518 invalid: 519 nd_print_invalid(ndo); 520 return -1; 521 } 522 523 static int 524 ospf_print_lshdr(netdissect_options *ndo, 525 const struct lsa_hdr *lshp) 526 { 527 u_int ls_type; 528 u_int ls_length; 529 530 ls_length = GET_BE_U_2(lshp->ls_length); 531 if (ls_length < sizeof(struct lsa_hdr)) { 532 ND_PRINT("\n\t Bogus length %u < header (%zu)", ls_length, 533 sizeof(struct lsa_hdr)); 534 return(-1); 535 } 536 ND_PRINT("\n\t Advertising Router %s, seq 0x%08x, age %us, length %zu", 537 GET_IPADDR_STRING(lshp->ls_router), 538 GET_BE_U_4(lshp->ls_seq), 539 GET_BE_U_2(lshp->ls_age), 540 ls_length - sizeof(struct lsa_hdr)); 541 ls_type = GET_U_1(lshp->ls_type); 542 switch (ls_type) { 543 /* the LSA header for opaque LSAs was slightly changed */ 544 case LS_TYPE_OPAQUE_LL: 545 case LS_TYPE_OPAQUE_AL: 546 case LS_TYPE_OPAQUE_DW: 547 ND_PRINT("\n\t %s LSA (%u), Opaque-Type %s LSA (%u), Opaque-ID %u", 548 tok2str(lsa_values,"unknown",ls_type), 549 ls_type, 550 551 tok2str(lsa_opaque_values, 552 "unknown", 553 GET_U_1(lshp->un_lsa_id.opaque_field.opaque_type)), 554 GET_U_1(lshp->un_lsa_id.opaque_field.opaque_type), 555 GET_BE_U_3(lshp->un_lsa_id.opaque_field.opaque_id) 556 557 ); 558 break; 559 560 /* all other LSA types use regular style LSA headers */ 561 default: 562 ND_PRINT("\n\t %s LSA (%u), LSA-ID: %s", 563 tok2str(lsa_values,"unknown",ls_type), 564 ls_type, 565 GET_IPADDR_STRING(lshp->un_lsa_id.lsa_id)); 566 break; 567 } 568 ND_PRINT("\n\t Options: [%s]", 569 bittok2str(ospf_option_values, "none", GET_U_1(lshp->ls_options))); 570 571 return (ls_length); 572 } 573 574 /* draft-ietf-ospf-mt-09 */ 575 static const struct tok ospf_topology_values[] = { 576 { 0, "default" }, 577 { 1, "multicast" }, 578 { 2, "management" }, 579 { 0, NULL } 580 }; 581 582 /* 583 * Print all the per-topology metrics. 584 */ 585 static void 586 ospf_print_tos_metrics(netdissect_options *ndo, 587 const union un_tos *tos) 588 { 589 u_int metric_count; 590 u_int toscount; 591 u_int tos_type; 592 593 toscount = GET_U_1(tos->link.link_tos_count)+1; 594 metric_count = 0; 595 596 /* 597 * All but the first metric contain a valid topology id. 598 */ 599 while (toscount != 0) { 600 tos_type = GET_U_1(tos->metrics.tos_type); 601 ND_PRINT("\n\t\ttopology %s (%u), metric %u", 602 tok2str(ospf_topology_values, "Unknown", 603 metric_count ? tos_type : 0), 604 metric_count ? tos_type : 0, 605 GET_BE_U_2(tos->metrics.tos_metric)); 606 metric_count++; 607 tos++; 608 toscount--; 609 } 610 } 611 612 /* 613 * Print a single link state advertisement. If truncated or if LSA length 614 * field is less than the length of the LSA header, return NULl, else 615 * return pointer to data past end of LSA. 616 */ 617 static const uint8_t * 618 ospf_print_lsa(netdissect_options *ndo, 619 const struct lsa *lsap) 620 { 621 const uint8_t *ls_end; 622 const struct rlalink *rlp; 623 const nd_ipv4 *ap; 624 const struct aslametric *almp; 625 const struct mcla *mcp; 626 const uint8_t *lp; 627 u_int tlv_type, tlv_length, rla_count, topology; 628 int ospf_print_lshdr_ret; 629 u_int ls_length; 630 const uint8_t *tptr; 631 632 tptr = (const uint8_t *)lsap->lsa_un.un_unknown; /* squelch compiler warnings */ 633 ospf_print_lshdr_ret = ospf_print_lshdr(ndo, &lsap->ls_hdr); 634 if (ospf_print_lshdr_ret < 0) 635 return(NULL); 636 ls_length = (u_int)ospf_print_lshdr_ret; 637 ls_end = (const uint8_t *)lsap + ls_length; 638 /* 639 * ospf_print_lshdr() returns -1 if the length is too short, 640 * so we know ls_length is >= sizeof(struct lsa_hdr). 641 */ 642 ls_length -= sizeof(struct lsa_hdr); 643 644 switch (GET_U_1(lsap->ls_hdr.ls_type)) { 645 646 case LS_TYPE_ROUTER: 647 ND_PRINT("\n\t Router LSA Options: [%s]", 648 bittok2str(ospf_rla_flag_values, "none", GET_U_1(lsap->lsa_un.un_rla.rla_flags))); 649 650 rla_count = GET_BE_U_2(lsap->lsa_un.un_rla.rla_count); 651 ND_TCHECK_SIZE(lsap->lsa_un.un_rla.rla_link); 652 rlp = lsap->lsa_un.un_rla.rla_link; 653 for (u_int i = rla_count; i != 0; i--) { 654 ND_TCHECK_SIZE(rlp); 655 switch (GET_U_1(rlp->un_tos.link.link_type)) { 656 657 case RLA_TYPE_VIRTUAL: 658 ND_PRINT("\n\t Virtual Link: Neighbor Router-ID: %s, Interface Address: %s", 659 GET_IPADDR_STRING(rlp->link_id), 660 GET_IPADDR_STRING(rlp->link_data)); 661 break; 662 663 case RLA_TYPE_ROUTER: 664 ND_PRINT("\n\t Neighbor Router-ID: %s, Interface Address: %s", 665 GET_IPADDR_STRING(rlp->link_id), 666 GET_IPADDR_STRING(rlp->link_data)); 667 break; 668 669 case RLA_TYPE_TRANSIT: 670 ND_PRINT("\n\t Neighbor Network-ID: %s, Interface Address: %s", 671 GET_IPADDR_STRING(rlp->link_id), 672 GET_IPADDR_STRING(rlp->link_data)); 673 break; 674 675 case RLA_TYPE_STUB: 676 ND_PRINT("\n\t Stub Network: %s, Mask: %s", 677 GET_IPADDR_STRING(rlp->link_id), 678 GET_IPADDR_STRING(rlp->link_data)); 679 break; 680 681 default: 682 ND_PRINT("\n\t Unknown Router Link Type (%u)", 683 GET_U_1(rlp->un_tos.link.link_type)); 684 return (ls_end); 685 } 686 687 ospf_print_tos_metrics(ndo, &rlp->un_tos); 688 689 rlp = (const struct rlalink *)((const u_char *)(rlp + 1) + 690 (GET_U_1(rlp->un_tos.link.link_tos_count) * sizeof(union un_tos))); 691 } 692 break; 693 694 case LS_TYPE_NETWORK: 695 ND_PRINT("\n\t Mask %s\n\t Connected Routers:", 696 GET_IPADDR_STRING(lsap->lsa_un.un_nla.nla_mask)); 697 ap = lsap->lsa_un.un_nla.nla_router; 698 while ((const u_char *)ap < ls_end) { 699 ND_PRINT("\n\t %s", GET_IPADDR_STRING(ap)); 700 ++ap; 701 } 702 break; 703 704 case LS_TYPE_SUM_IP: 705 ND_TCHECK_4(lsap->lsa_un.un_nla.nla_mask); 706 ND_PRINT("\n\t Mask %s", 707 GET_IPADDR_STRING(lsap->lsa_un.un_sla.sla_mask)); 708 ND_TCHECK_SIZE(lsap->lsa_un.un_sla.sla_tosmetric); 709 lp = (const uint8_t *)lsap->lsa_un.un_sla.sla_tosmetric; 710 while (lp < ls_end) { 711 uint32_t ul; 712 713 ul = GET_BE_U_4(lp); 714 topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS; 715 ND_PRINT("\n\t\ttopology %s (%u) metric %u", 716 tok2str(ospf_topology_values, "Unknown", topology), 717 topology, 718 ul & SLA_MASK_METRIC); 719 lp += 4; 720 } 721 break; 722 723 case LS_TYPE_SUM_ABR: 724 ND_TCHECK_SIZE(lsap->lsa_un.un_sla.sla_tosmetric); 725 lp = (const uint8_t *)lsap->lsa_un.un_sla.sla_tosmetric; 726 while (lp < ls_end) { 727 uint32_t ul; 728 729 ul = GET_BE_U_4(lp); 730 topology = (ul & SLA_MASK_TOS) >> SLA_SHIFT_TOS; 731 ND_PRINT("\n\t\ttopology %s (%u) metric %u", 732 tok2str(ospf_topology_values, "Unknown", topology), 733 topology, 734 ul & SLA_MASK_METRIC); 735 lp += 4; 736 } 737 break; 738 739 case LS_TYPE_ASE: 740 case LS_TYPE_NSSA: /* fall through - those LSAs share the same format */ 741 ND_TCHECK_4(lsap->lsa_un.un_nla.nla_mask); 742 ND_PRINT("\n\t Mask %s", 743 GET_IPADDR_STRING(lsap->lsa_un.un_asla.asla_mask)); 744 745 ND_TCHECK_SIZE(lsap->lsa_un.un_sla.sla_tosmetric); 746 almp = lsap->lsa_un.un_asla.asla_metric; 747 while ((const u_char *)almp < ls_end) { 748 uint32_t ul; 749 750 ul = GET_BE_U_4(almp->asla_tosmetric); 751 topology = ((ul & ASLA_MASK_TOS) >> ASLA_SHIFT_TOS); 752 ND_PRINT("\n\t\ttopology %s (%u), type %u, metric", 753 tok2str(ospf_topology_values, "Unknown", topology), 754 topology, 755 (ul & ASLA_FLAG_EXTERNAL) ? 2 : 1); 756 if ((ul & ASLA_MASK_METRIC) == 0xffffff) 757 ND_PRINT(" infinite"); 758 else 759 ND_PRINT(" %u", (ul & ASLA_MASK_METRIC)); 760 761 if (GET_IPV4_TO_NETWORK_ORDER(almp->asla_forward) != 0) { 762 ND_PRINT(", forward %s", GET_IPADDR_STRING(almp->asla_forward)); 763 } 764 if (GET_IPV4_TO_NETWORK_ORDER(almp->asla_tag) != 0) { 765 ND_PRINT(", tag %s", GET_IPADDR_STRING(almp->asla_tag)); 766 } 767 ++almp; 768 } 769 break; 770 771 case LS_TYPE_GROUP: 772 /* Multicast extensions as of 23 July 1991 */ 773 mcp = lsap->lsa_un.un_mcla; 774 while ((const u_char *)mcp < ls_end) { 775 switch (GET_BE_U_4(mcp->mcla_vtype)) { 776 777 case MCLA_VERTEX_ROUTER: 778 ND_PRINT("\n\t Router Router-ID %s", 779 GET_IPADDR_STRING(mcp->mcla_vid)); 780 break; 781 782 case MCLA_VERTEX_NETWORK: 783 ND_PRINT("\n\t Network Designated Router %s", 784 GET_IPADDR_STRING(mcp->mcla_vid)); 785 break; 786 787 default: 788 ND_PRINT("\n\t unknown VertexType (%u)", 789 GET_BE_U_4(mcp->mcla_vtype)); 790 break; 791 } 792 ++mcp; 793 } 794 break; 795 796 case LS_TYPE_OPAQUE_LL: /* fall through */ 797 case LS_TYPE_OPAQUE_AL: 798 case LS_TYPE_OPAQUE_DW: 799 800 switch (GET_U_1(lsap->ls_hdr.un_lsa_id.opaque_field.opaque_type)) { 801 case LS_OPAQUE_TYPE_RI: 802 tptr = (const uint8_t *)(lsap->lsa_un.un_ri_tlv); 803 804 u_int ls_length_remaining = ls_length; 805 while (ls_length_remaining != 0) { 806 ND_TCHECK_4(tptr); 807 if (ls_length_remaining < 4) { 808 ND_PRINT("\n\t Remaining LS length %u < 4", ls_length_remaining); 809 return(ls_end); 810 } 811 tlv_type = GET_BE_U_2(tptr); 812 tlv_length = GET_BE_U_2(tptr + 2); 813 tptr+=4; 814 ls_length_remaining-=4; 815 816 ND_PRINT("\n\t %s TLV (%u), length: %u, value: ", 817 tok2str(lsa_opaque_ri_tlv_values,"unknown",tlv_type), 818 tlv_type, 819 tlv_length); 820 821 if (tlv_length > ls_length_remaining) { 822 ND_PRINT("\n\t Bogus length %u > remaining LS length %u", tlv_length, 823 ls_length_remaining); 824 return(ls_end); 825 } 826 ND_TCHECK_LEN(tptr, tlv_length); 827 switch(tlv_type) { 828 829 case LS_OPAQUE_RI_TLV_CAP: 830 if (tlv_length != 4) { 831 ND_PRINT("\n\t Bogus length %u != 4", tlv_length); 832 return(ls_end); 833 } 834 ND_PRINT("Capabilities: %s", 835 bittok2str(lsa_opaque_ri_tlv_cap_values, "Unknown", GET_BE_U_4(tptr))); 836 break; 837 default: 838 if (ndo->ndo_vflag <= 1) { 839 if (!print_unknown_data(ndo, tptr, "\n\t ", tlv_length)) 840 return(ls_end); 841 } 842 break; 843 844 } 845 846 /* in OSPF everything has to be 32-bit aligned, including TLVs */ 847 if (tlv_length % 4) { 848 tlv_length += (4 - (tlv_length % 4)); 849 } 850 tptr+=tlv_length; 851 ls_length_remaining-=tlv_length; 852 } 853 break; 854 855 case LS_OPAQUE_TYPE_GRACE: 856 if (ospf_grace_lsa_print(ndo, (const u_char *)(lsap->lsa_un.un_grace_tlv), 857 ls_length) == -1) { 858 return(ls_end); 859 } 860 break; 861 862 case LS_OPAQUE_TYPE_TE: 863 if (ospf_te_lsa_print(ndo, (const u_char *)(lsap->lsa_un.un_te_lsa_tlv), 864 ls_length) == -1) { 865 return(ls_end); 866 } 867 break; 868 869 default: 870 if (ndo->ndo_vflag <= 1) { 871 if (!print_unknown_data(ndo, (const uint8_t *)lsap->lsa_un.un_unknown, 872 "\n\t ", ls_length)) 873 return(ls_end); 874 } 875 break; 876 } 877 } 878 879 /* do we want to see an additionally hexdump ? */ 880 if (ndo->ndo_vflag> 1) 881 if (!print_unknown_data(ndo, (const uint8_t *)lsap->lsa_un.un_unknown, 882 "\n\t ", ls_length)) { 883 return(ls_end); 884 } 885 886 return (ls_end); 887 trunc: 888 return (NULL); 889 } 890 891 static void 892 ospf_decode_lls(netdissect_options *ndo, 893 const struct ospfhdr *op, u_int length) 894 { 895 const u_char *dptr; 896 const u_char *dataend; 897 u_int length2; 898 uint16_t lls_type, lls_len; 899 uint32_t lls_flags; 900 901 switch (GET_U_1(op->ospf_type)) { 902 903 case OSPF_TYPE_HELLO: 904 if (!(GET_U_1(op->ospf_hello.hello_options) & OSPF_OPTION_L)) 905 return; 906 break; 907 908 case OSPF_TYPE_DD: 909 if (!(GET_U_1(op->ospf_db.db_options) & OSPF_OPTION_L)) 910 return; 911 break; 912 913 default: 914 return; 915 } 916 917 /* dig deeper if LLS data is available; see RFC4813 */ 918 length2 = GET_BE_U_2(op->ospf_len); 919 dptr = (const u_char *)op + length2; 920 dataend = (const u_char *)op + length; 921 922 if (GET_BE_U_2(op->ospf_authtype) == OSPF_AUTH_MD5) { 923 dptr = dptr + GET_U_1(op->ospf_authdata + 3); 924 length2 += GET_U_1(op->ospf_authdata + 3); 925 } 926 if (length2 >= length) { 927 ND_PRINT("\n\t[LLS truncated]"); 928 return; 929 } 930 ND_PRINT("\n\t LLS: checksum: 0x%04x", (u_int) GET_BE_U_2(dptr)); 931 932 dptr += 2; 933 length2 = GET_BE_U_2(dptr); 934 ND_PRINT(", length: %u", length2); 935 936 dptr += 2; 937 while (dptr < dataend) { 938 lls_type = GET_BE_U_2(dptr); 939 ND_PRINT("\n\t %s (%u)", 940 tok2str(ospf_lls_tlv_values,"Unknown TLV",lls_type), 941 lls_type); 942 dptr += 2; 943 lls_len = GET_BE_U_2(dptr); 944 ND_PRINT(", length: %u", lls_len); 945 dptr += 2; 946 switch (lls_type) { 947 948 case OSPF_LLS_EO: 949 if (lls_len != 4) { 950 ND_PRINT(" [should be 4]"); 951 lls_len = 4; 952 } 953 lls_flags = GET_BE_U_4(dptr); 954 ND_PRINT("\n\t Options: 0x%08x [%s]", lls_flags, 955 bittok2str(ospf_lls_eo_options, "?", lls_flags)); 956 957 break; 958 959 case OSPF_LLS_MD5: 960 if (lls_len != 20) { 961 ND_PRINT(" [should be 20]"); 962 lls_len = 20; 963 } 964 ND_PRINT("\n\t Sequence number: 0x%08x", GET_BE_U_4(dptr)); 965 break; 966 } 967 968 dptr += lls_len; 969 } 970 } 971 972 static int 973 ospf_decode_v2(netdissect_options *ndo, 974 const struct ospfhdr *op, const u_char *dataend) 975 { 976 const nd_ipv4 *ap; 977 const struct lsr *lsrp; 978 const struct lsa_hdr *lshp; 979 const struct lsa *lsap; 980 uint32_t lsa_count,lsa_count_max; 981 982 switch (GET_U_1(op->ospf_type)) { 983 984 case OSPF_TYPE_HELLO: 985 ND_PRINT("\n\tOptions [%s]", 986 bittok2str(ospf_option_values,"none",GET_U_1(op->ospf_hello.hello_options))); 987 988 ND_PRINT("\n\t Hello Timer %us, Dead Timer %us, Mask %s, Priority %u", 989 GET_BE_U_2(op->ospf_hello.hello_helloint), 990 GET_BE_U_4(op->ospf_hello.hello_deadint), 991 GET_IPADDR_STRING(op->ospf_hello.hello_mask), 992 GET_U_1(op->ospf_hello.hello_priority)); 993 994 if (GET_IPV4_TO_NETWORK_ORDER(op->ospf_hello.hello_dr) != 0) 995 ND_PRINT("\n\t Designated Router %s", 996 GET_IPADDR_STRING(op->ospf_hello.hello_dr)); 997 998 if (GET_IPV4_TO_NETWORK_ORDER(op->ospf_hello.hello_bdr) != 0) 999 ND_PRINT(", Backup Designated Router %s", 1000 GET_IPADDR_STRING(op->ospf_hello.hello_bdr)); 1001 1002 ap = op->ospf_hello.hello_neighbor; 1003 if ((const u_char *)ap < dataend) 1004 ND_PRINT("\n\t Neighbor List:"); 1005 while ((const u_char *)ap < dataend) { 1006 ND_PRINT("\n\t %s", GET_IPADDR_STRING(ap)); 1007 ++ap; 1008 } 1009 break; /* HELLO */ 1010 1011 case OSPF_TYPE_DD: 1012 ND_PRINT("\n\tOptions [%s]", 1013 bittok2str(ospf_option_values, "none", GET_U_1(op->ospf_db.db_options))); 1014 ND_PRINT(", DD Flags [%s]", 1015 bittok2str(ospf_dd_flag_values, "none", GET_U_1(op->ospf_db.db_flags))); 1016 if (GET_BE_U_2(op->ospf_db.db_ifmtu)) { 1017 ND_PRINT(", MTU: %u", 1018 GET_BE_U_2(op->ospf_db.db_ifmtu)); 1019 } 1020 ND_PRINT(", Sequence: 0x%08x", GET_BE_U_4(op->ospf_db.db_seq)); 1021 1022 /* Print all the LS adv's */ 1023 lshp = op->ospf_db.db_lshdr; 1024 while (((const u_char *)lshp < dataend) && ospf_print_lshdr(ndo, lshp) != -1) { 1025 ++lshp; 1026 } 1027 break; 1028 1029 case OSPF_TYPE_LS_REQ: 1030 lsrp = op->ospf_lsr; 1031 while ((const u_char *)lsrp < dataend) { 1032 ND_TCHECK_SIZE(lsrp); 1033 1034 ND_PRINT("\n\t Advertising Router: %s, %s LSA (%u)", 1035 GET_IPADDR_STRING(lsrp->ls_router), 1036 tok2str(lsa_values,"unknown",GET_BE_U_4(lsrp->ls_type)), 1037 GET_BE_U_4(lsrp->ls_type)); 1038 1039 switch (GET_BE_U_4(lsrp->ls_type)) { 1040 /* the LSA header for opaque LSAs was slightly changed */ 1041 case LS_TYPE_OPAQUE_LL: 1042 case LS_TYPE_OPAQUE_AL: 1043 case LS_TYPE_OPAQUE_DW: 1044 ND_PRINT(", Opaque-Type: %s LSA (%u), Opaque-ID: %u", 1045 tok2str(lsa_opaque_values, "unknown",GET_U_1(lsrp->un_ls_stateid.opaque_field.opaque_type)), 1046 GET_U_1(lsrp->un_ls_stateid.opaque_field.opaque_type), 1047 GET_BE_U_3(lsrp->un_ls_stateid.opaque_field.opaque_id)); 1048 break; 1049 default: 1050 ND_PRINT(", LSA-ID: %s", 1051 GET_IPADDR_STRING(lsrp->un_ls_stateid.ls_stateid)); 1052 break; 1053 } 1054 1055 ++lsrp; 1056 } 1057 break; 1058 1059 case OSPF_TYPE_LS_UPDATE: 1060 lsap = op->ospf_lsu.lsu_lsa; 1061 lsa_count_max = GET_BE_U_4(op->ospf_lsu.lsu_count); 1062 ND_PRINT(", %u LSA%s", lsa_count_max, PLURAL_SUFFIX(lsa_count_max)); 1063 for (lsa_count=1;lsa_count <= lsa_count_max;lsa_count++) { 1064 ND_PRINT("\n\t LSA #%u", lsa_count); 1065 lsap = (const struct lsa *)ospf_print_lsa(ndo, lsap); 1066 if (lsap == NULL) 1067 goto trunc; 1068 } 1069 break; 1070 1071 case OSPF_TYPE_LS_ACK: 1072 lshp = op->ospf_lsa.lsa_lshdr; 1073 while ((const u_char *)lshp < dataend) { 1074 ospf_print_lshdr(ndo, lshp); 1075 ++lshp; 1076 } 1077 break; 1078 1079 default: 1080 break; 1081 } 1082 return (0); 1083 trunc: 1084 return (1); 1085 } 1086 1087 void 1088 ospf_print(netdissect_options *ndo, 1089 const u_char *bp, u_int length, 1090 const u_char *bp2 _U_) 1091 { 1092 const struct ospfhdr *op; 1093 const u_char *dataend; 1094 const char *cp; 1095 1096 ndo->ndo_protocol = "ospf2"; 1097 op = (const struct ospfhdr *)bp; 1098 1099 /* XXX Before we do anything else, strip off the MD5 trailer */ 1100 if (GET_BE_U_2(op->ospf_authtype) == OSPF_AUTH_MD5) { 1101 length -= OSPF_AUTH_MD5_LEN; 1102 ndo->ndo_snapend -= OSPF_AUTH_MD5_LEN; 1103 } 1104 1105 /* If the type is valid translate it, or just print the type */ 1106 /* value. If it's not valid, say so and return */ 1107 cp = tok2str(type2str, "unknown LS-type %u", GET_U_1(op->ospf_type)); 1108 ND_PRINT("OSPFv%u, %s, length %u", GET_U_1(op->ospf_version), cp, 1109 length); 1110 if (*cp == 'u') 1111 return; 1112 1113 if (!ndo->ndo_vflag) { /* non verbose - so lets bail out here */ 1114 return; 1115 } 1116 1117 if (length != GET_BE_U_2(op->ospf_len)) { 1118 ND_PRINT(" [len %u]", GET_BE_U_2(op->ospf_len)); 1119 } 1120 1121 if (length > GET_BE_U_2(op->ospf_len)) { 1122 dataend = bp + GET_BE_U_2(op->ospf_len); 1123 } else { 1124 dataend = bp + length; 1125 } 1126 1127 ND_PRINT("\n\tRouter-ID %s", GET_IPADDR_STRING(op->ospf_routerid)); 1128 1129 if (GET_IPV4_TO_NETWORK_ORDER(op->ospf_areaid) != 0) 1130 ND_PRINT(", Area %s", GET_IPADDR_STRING(op->ospf_areaid)); 1131 else 1132 ND_PRINT(", Backbone Area"); 1133 1134 if (ndo->ndo_vflag) { 1135 /* Print authentication data (should we really do this?) */ 1136 ND_TCHECK_LEN(op->ospf_authdata, sizeof(op->ospf_authdata)); 1137 1138 ND_PRINT(", Authentication Type: %s (%u)", 1139 tok2str(ospf_authtype_values, "unknown", GET_BE_U_2(op->ospf_authtype)), 1140 GET_BE_U_2(op->ospf_authtype)); 1141 1142 switch (GET_BE_U_2(op->ospf_authtype)) { 1143 1144 case OSPF_AUTH_NONE: 1145 break; 1146 1147 case OSPF_AUTH_SIMPLE: 1148 ND_PRINT("\n\tSimple text password: "); 1149 nd_printjnp(ndo, op->ospf_authdata, OSPF_AUTH_SIMPLE_LEN); 1150 break; 1151 1152 case OSPF_AUTH_MD5: 1153 ND_PRINT("\n\tKey-ID: %u, Auth-Length: %u, Crypto Sequence Number: 0x%08x", 1154 GET_U_1(op->ospf_authdata + 2), 1155 GET_U_1(op->ospf_authdata + 3), 1156 GET_BE_U_4((op->ospf_authdata) + 4)); 1157 break; 1158 1159 default: 1160 return; 1161 } 1162 } 1163 /* Do rest according to version. */ 1164 switch (GET_U_1(op->ospf_version)) { 1165 1166 case 2: 1167 /* ospf version 2 */ 1168 if (ospf_decode_v2(ndo, op, dataend)) 1169 goto trunc; 1170 if (length > GET_BE_U_2(op->ospf_len)) 1171 ospf_decode_lls(ndo, op, length); 1172 break; 1173 1174 default: 1175 ND_PRINT(" ospf [version %u]", GET_U_1(op->ospf_version)); 1176 break; 1177 } /* end switch on version */ 1178 1179 return; 1180 trunc: 1181 nd_trunc_longjmp(ndo); 1182 } 1183
Indexes created Mon Mar 16 00:23:04 UTC 2026