1 /* 2 * Copyright (c) 1998-2006 The TCPDUMP project 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that: (1) source code 6 * distributions retain the above copyright notice and this paragraph 7 * in its entirety, and (2) distributions including binary code include 8 * the above copyright notice and this paragraph in its entirety in 9 * the documentation or other materials provided with the distribution. 10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND 11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT 12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 13 * FOR A PARTICULAR PURPOSE. 14 * 15 * Support for the IEEE Connectivity Fault Management Protocols as per 802.1ag. 16 * 17 * Original code by Hannes Gredler (hannes (at) juniper.net) 18 */ 19 20 #define NETDISSECT_REWORKED 21 #ifdef HAVE_CONFIG_H 22 #include "config.h" 23 #endif 24 25 #include <tcpdump-stdinc.h> 26 27 #include <stdio.h> 28 29 #include "interface.h" 30 #include "extract.h" 31 #include "ether.h" 32 #include "addrtoname.h" 33 #include "oui.h" 34 #include "af.h" 35 36 struct cfm_common_header_t { 37 uint8_t mdlevel_version; 38 uint8_t opcode; 39 uint8_t flags; 40 uint8_t first_tlv_offset; 41 }; 42 43 #define CFM_VERSION 0 44 #define CFM_EXTRACT_VERSION(x) (((x)&0x1f)) 45 #define CFM_EXTRACT_MD_LEVEL(x) (((x)&0xe0)>>5) 46 47 #define CFM_OPCODE_CCM 1 48 #define CFM_OPCODE_LBR 2 49 #define CFM_OPCODE_LBM 3 50 #define CFM_OPCODE_LTR 4 51 #define CFM_OPCODE_LTM 5 52 53 static const struct tok cfm_opcode_values[] = { 54 { CFM_OPCODE_CCM, "Continouity Check Message"}, 55 { CFM_OPCODE_LBR, "Loopback Reply"}, 56 { CFM_OPCODE_LBM, "Loopback Message"}, 57 { CFM_OPCODE_LTR, "Linktrace Reply"}, 58 { CFM_OPCODE_LTM, "Linktrace Message"}, 59 { 0, NULL} 60 }; 61 62 /* 63 * Message Formats. 64 */ 65 struct cfm_ccm_t { 66 uint8_t sequence[4]; 67 uint8_t ma_epi[2]; 68 uint8_t md_nameformat; 69 uint8_t md_namelength; 70 uint8_t md_name[46]; /* md name and short ma name */ 71 uint8_t reserved_itu[16]; 72 uint8_t reserved[6]; 73 }; 74 75 /* 76 * Timer Bases for the CCM Interval field. 77 * Expressed in units of seconds. 78 */ 79 const float ccm_interval_base[8] = {0, 0.003333, 0.01, 0.1, 1, 10, 60, 600}; 80 #define CCM_INTERVAL_MIN_MULTIPLIER 3.25 81 #define CCM_INTERVAL_MAX_MULTIPLIER 3.5 82 83 #define CFM_CCM_RDI_FLAG 0x80 84 #define CFM_EXTRACT_CCM_INTERVAL(x) (((x)&0x07)) 85 86 #define CFM_CCM_MD_FORMAT_8021 0 87 #define CFM_CCM_MD_FORMAT_NONE 1 88 #define CFM_CCM_MD_FORMAT_DNS 2 89 #define CFM_CCM_MD_FORMAT_MAC 3 90 #define CFM_CCM_MD_FORMAT_CHAR 4 91 92 static const struct tok cfm_md_nameformat_values[] = { 93 { CFM_CCM_MD_FORMAT_8021, "IEEE 802.1"}, 94 { CFM_CCM_MD_FORMAT_NONE, "No MD Name present"}, 95 { CFM_CCM_MD_FORMAT_DNS, "DNS string"}, 96 { CFM_CCM_MD_FORMAT_MAC, "MAC + 16Bit Integer"}, 97 { CFM_CCM_MD_FORMAT_CHAR, "Character string"}, 98 { 0, NULL} 99 }; 100 101 #define CFM_CCM_MA_FORMAT_8021 0 102 #define CFM_CCM_MA_FORMAT_VID 1 103 #define CFM_CCM_MA_FORMAT_CHAR 2 104 #define CFM_CCM_MA_FORMAT_INT 3 105 #define CFM_CCM_MA_FORMAT_VPN 4 106 107 static const struct tok cfm_ma_nameformat_values[] = { 108 { CFM_CCM_MA_FORMAT_8021, "IEEE 802.1"}, 109 { CFM_CCM_MA_FORMAT_VID, "Primary VID"}, 110 { CFM_CCM_MA_FORMAT_CHAR, "Character string"}, 111 { CFM_CCM_MA_FORMAT_INT, "16Bit Integer"}, 112 { CFM_CCM_MA_FORMAT_VPN, "RFC2685 VPN-ID"}, 113 { 0, NULL} 114 }; 115 116 struct cfm_lbm_t { 117 uint8_t transaction_id[4]; 118 uint8_t reserved[4]; 119 }; 120 121 struct cfm_ltm_t { 122 uint8_t transaction_id[4]; 123 uint8_t egress_id[8]; 124 uint8_t ttl; 125 uint8_t original_mac[ETHER_ADDR_LEN]; 126 uint8_t target_mac[ETHER_ADDR_LEN]; 127 uint8_t reserved[3]; 128 }; 129 130 static const struct tok cfm_ltm_flag_values[] = { 131 { 0x80, "Use Forwarding-DB only"}, 132 { 0, NULL} 133 }; 134 135 struct cfm_ltr_t { 136 uint8_t transaction_id[4]; 137 uint8_t last_egress_id[8]; 138 uint8_t next_egress_id[8]; 139 uint8_t ttl; 140 uint8_t replay_action; 141 uint8_t reserved[6]; 142 }; 143 144 static const struct tok cfm_ltr_flag_values[] = { 145 { 0x80, "UseFDB Only"}, 146 { 0x40, "FwdYes"}, 147 { 0x20, "Terminal MEP"}, 148 { 0, NULL} 149 }; 150 151 static const struct tok cfm_ltr_replay_action_values[] = { 152 { 1, "Exact Match"}, 153 { 2, "Filtering DB"}, 154 { 3, "MIP CCM DB"}, 155 { 0, NULL} 156 }; 157 158 159 #define CFM_TLV_END 0 160 #define CFM_TLV_SENDER_ID 1 161 #define CFM_TLV_PORT_STATUS 2 162 #define CFM_TLV_INTERFACE_STATUS 3 163 #define CFM_TLV_DATA 4 164 #define CFM_TLV_REPLY_INGRESS 5 165 #define CFM_TLV_REPLY_EGRESS 6 166 #define CFM_TLV_PRIVATE 31 167 168 static const struct tok cfm_tlv_values[] = { 169 { CFM_TLV_END, "End"}, 170 { CFM_TLV_SENDER_ID, "Sender ID"}, 171 { CFM_TLV_PORT_STATUS, "Port status"}, 172 { CFM_TLV_INTERFACE_STATUS, "Interface status"}, 173 { CFM_TLV_DATA, "Data"}, 174 { CFM_TLV_REPLY_INGRESS, "Reply Ingress"}, 175 { CFM_TLV_REPLY_EGRESS, "Reply Egress"}, 176 { CFM_TLV_PRIVATE, "Organization Specific"}, 177 { 0, NULL} 178 }; 179 180 /* 181 * TLVs 182 */ 183 184 struct cfm_tlv_header_t { 185 uint8_t type; 186 uint8_t length[2]; 187 }; 188 189 /* FIXME define TLV formats */ 190 191 static const struct tok cfm_tlv_port_status_values[] = { 192 { 1, "Blocked"}, 193 { 2, "Up"}, 194 { 0, NULL} 195 }; 196 197 static const struct tok cfm_tlv_interface_status_values[] = { 198 { 1, "Up"}, 199 { 2, "Down"}, 200 { 3, "Testing"}, 201 { 5, "Dormant"}, 202 { 6, "not present"}, 203 { 7, "lower Layer down"}, 204 { 0, NULL} 205 }; 206 207 #define CFM_CHASSIS_ID_CHASSIS_COMPONENT 1 208 #define CFM_CHASSIS_ID_INTERFACE_ALIAS 2 209 #define CFM_CHASSIS_ID_PORT_COMPONENT 3 210 #define CFM_CHASSIS_ID_MAC_ADDRESS 4 211 #define CFM_CHASSIS_ID_NETWORK_ADDRESS 5 212 #define CFM_CHASSIS_ID_INTERFACE_NAME 6 213 #define CFM_CHASSIS_ID_LOCAL 7 214 215 static const struct tok cfm_tlv_senderid_chassisid_values[] = { 216 { 0, "Reserved"}, 217 { CFM_CHASSIS_ID_CHASSIS_COMPONENT, "Chassis component"}, 218 { CFM_CHASSIS_ID_INTERFACE_ALIAS, "Interface alias"}, 219 { CFM_CHASSIS_ID_PORT_COMPONENT, "Port component"}, 220 { CFM_CHASSIS_ID_MAC_ADDRESS, "MAC address"}, 221 { CFM_CHASSIS_ID_NETWORK_ADDRESS, "Network address"}, 222 { CFM_CHASSIS_ID_INTERFACE_NAME, "Interface name"}, 223 { CFM_CHASSIS_ID_LOCAL, "Locally assigned"}, 224 { 0, NULL} 225 }; 226 227 228 static int 229 cfm_mgmt_addr_print(netdissect_options *ndo, 230 register const u_char *tptr) 231 { 232 u_int mgmt_addr_type; 233 u_int hexdump = FALSE; 234 235 /* 236 * Altough AFIs are tpically 2 octects wide, 237 * 802.1ab specifies that this field width 238 * is only once octet 239 */ 240 mgmt_addr_type = *tptr; 241 ND_PRINT((ndo, "\n\t Management Address Type %s (%u)", 242 tok2str(af_values, "Unknown", mgmt_addr_type), 243 mgmt_addr_type)); 244 245 /* 246 * Resolve the passed in Address. 247 */ 248 switch(mgmt_addr_type) { 249 case AFNUM_INET: 250 ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr + 1))); 251 break; 252 253 #ifdef INET6 254 case AFNUM_INET6: 255 ND_PRINT((ndo, ", %s", ip6addr_string(ndo, tptr + 1))); 256 break; 257 #endif 258 259 default: 260 hexdump = TRUE; 261 break; 262 } 263 264 return hexdump; 265 } 266 267 /* 268 * The egress-ID string is a 16-Bit string plus a MAC address. 269 */ 270 static const char * 271 cfm_egress_id_string(netdissect_options *ndo, register const u_char *tptr) 272 { 273 static char egress_id_buffer[80]; 274 275 snprintf(egress_id_buffer, sizeof(egress_id_buffer), 276 "MAC 0x%4x-%s", 277 EXTRACT_16BITS(tptr), 278 etheraddr_string(ndo, tptr+2)); 279 280 return egress_id_buffer; 281 } 282 283 void 284 cfm_print(netdissect_options *ndo, 285 register const u_char *pptr, register u_int length) 286 { 287 const struct cfm_common_header_t *cfm_common_header; 288 const struct cfm_tlv_header_t *cfm_tlv_header; 289 const uint8_t *tptr, *tlv_ptr, *ma_name, *ma_nameformat, *ma_namelength; 290 u_int hexdump, tlen, cfm_tlv_len, cfm_tlv_type, ccm_interval; 291 292 293 union { 294 const struct cfm_ccm_t *cfm_ccm; 295 const struct cfm_lbm_t *cfm_lbm; 296 const struct cfm_ltm_t *cfm_ltm; 297 const struct cfm_ltr_t *cfm_ltr; 298 } msg_ptr; 299 300 tptr=pptr; 301 cfm_common_header = (const struct cfm_common_header_t *)pptr; 302 ND_TCHECK(*cfm_common_header); 303 304 /* 305 * Sanity checking of the header. 306 */ 307 if (CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version) != CFM_VERSION) { 308 ND_PRINT((ndo, "CFMv%u not supported, length %u", 309 CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version), length)); 310 return; 311 } 312 313 ND_PRINT((ndo, "CFMv%u %s, MD Level %u, length %u", 314 CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version), 315 tok2str(cfm_opcode_values, "unknown (%u)", cfm_common_header->opcode), 316 CFM_EXTRACT_MD_LEVEL(cfm_common_header->mdlevel_version), 317 length)); 318 319 /* 320 * In non-verbose mode just print the opcode and md-level. 321 */ 322 if (ndo->ndo_vflag < 1) { 323 return; 324 } 325 326 ND_PRINT((ndo, "\n\tFirst TLV offset %u", cfm_common_header->first_tlv_offset)); 327 328 tptr += sizeof(const struct cfm_common_header_t); 329 tlen = length - sizeof(struct cfm_common_header_t); 330 331 switch (cfm_common_header->opcode) { 332 case CFM_OPCODE_CCM: 333 msg_ptr.cfm_ccm = (const struct cfm_ccm_t *)tptr; 334 335 ccm_interval = CFM_EXTRACT_CCM_INTERVAL(cfm_common_header->flags); 336 ND_PRINT((ndo, ", Flags [CCM Interval %u%s]", 337 ccm_interval, 338 cfm_common_header->flags & CFM_CCM_RDI_FLAG ? 339 ", RDI" : "")); 340 341 /* 342 * Resolve the CCM interval field. 343 */ 344 if (ccm_interval) { 345 ND_PRINT((ndo, "\n\t CCM Interval %.3fs" 346 ", min CCM Lifetime %.3fs, max CCM Lifetime %.3fs", 347 ccm_interval_base[ccm_interval], 348 ccm_interval_base[ccm_interval] * CCM_INTERVAL_MIN_MULTIPLIER, 349 ccm_interval_base[ccm_interval] * CCM_INTERVAL_MAX_MULTIPLIER)); 350 } 351 352 ND_PRINT((ndo, "\n\t Sequence Number 0x%08x, MA-End-Point-ID 0x%04x", 353 EXTRACT_32BITS(msg_ptr.cfm_ccm->sequence), 354 EXTRACT_16BITS(msg_ptr.cfm_ccm->ma_epi))); 355 356 357 /* 358 * Resolve the MD fields. 359 */ 360 ND_PRINT((ndo, "\n\t MD Name Format %s (%u), MD Name length %u", 361 tok2str(cfm_md_nameformat_values, "Unknown", 362 msg_ptr.cfm_ccm->md_nameformat), 363 msg_ptr.cfm_ccm->md_nameformat, 364 msg_ptr.cfm_ccm->md_namelength)); 365 366 if (msg_ptr.cfm_ccm->md_nameformat != CFM_CCM_MD_FORMAT_NONE) { 367 ND_PRINT((ndo, "\n\t MD Name: ")); 368 switch (msg_ptr.cfm_ccm->md_nameformat) { 369 case CFM_CCM_MD_FORMAT_DNS: 370 case CFM_CCM_MD_FORMAT_CHAR: 371 safeputs(ndo, msg_ptr.cfm_ccm->md_name, msg_ptr.cfm_ccm->md_namelength); 372 break; 373 374 case CFM_CCM_MD_FORMAT_MAC: 375 ND_PRINT((ndo, "\n\t MAC %s", etheraddr_string(ndo, 376 msg_ptr.cfm_ccm->md_name))); 377 break; 378 379 /* FIXME add printers for those MD formats - hexdump for now */ 380 case CFM_CCM_MA_FORMAT_8021: 381 default: 382 print_unknown_data(ndo, msg_ptr.cfm_ccm->md_name, "\n\t ", 383 msg_ptr.cfm_ccm->md_namelength); 384 } 385 } 386 387 388 /* 389 * Resolve the MA fields. 390 */ 391 ma_nameformat = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength; 392 ma_namelength = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength + 1; 393 ma_name = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength + 2; 394 395 ND_PRINT((ndo, "\n\t MA Name-Format %s (%u), MA name length %u", 396 tok2str(cfm_ma_nameformat_values, "Unknown", 397 *ma_nameformat), 398 *ma_nameformat, 399 *ma_namelength)); 400 401 ND_PRINT((ndo, "\n\t MA Name: ")); 402 switch (*ma_nameformat) { 403 case CFM_CCM_MA_FORMAT_CHAR: 404 safeputs(ndo, ma_name, *ma_namelength); 405 break; 406 407 /* FIXME add printers for those MA formats - hexdump for now */ 408 case CFM_CCM_MA_FORMAT_8021: 409 case CFM_CCM_MA_FORMAT_VID: 410 case CFM_CCM_MA_FORMAT_INT: 411 case CFM_CCM_MA_FORMAT_VPN: 412 default: 413 print_unknown_data(ndo, ma_name, "\n\t ", *ma_namelength); 414 } 415 break; 416 417 case CFM_OPCODE_LTM: 418 msg_ptr.cfm_ltm = (const struct cfm_ltm_t *)tptr; 419 420 ND_PRINT((ndo, ", Flags [%s]", 421 bittok2str(cfm_ltm_flag_values, "none", cfm_common_header->flags))); 422 423 ND_PRINT((ndo, "\n\t Transaction-ID 0x%08x, Egress-ID %s, ttl %u", 424 EXTRACT_32BITS(msg_ptr.cfm_ltm->transaction_id), 425 cfm_egress_id_string(ndo, msg_ptr.cfm_ltm->egress_id), 426 msg_ptr.cfm_ltm->ttl)); 427 428 ND_PRINT((ndo, "\n\t Original-MAC %s, Target-MAC %s", 429 etheraddr_string(ndo, msg_ptr.cfm_ltm->original_mac), 430 etheraddr_string(ndo, msg_ptr.cfm_ltm->target_mac))); 431 break; 432 433 case CFM_OPCODE_LTR: 434 msg_ptr.cfm_ltr = (const struct cfm_ltr_t *)tptr; 435 436 ND_PRINT((ndo, ", Flags [%s]", 437 bittok2str(cfm_ltr_flag_values, "none", cfm_common_header->flags))); 438 439 ND_PRINT((ndo, "\n\t Transaction-ID 0x%08x, Last-Egress-ID %s", 440 EXTRACT_32BITS(msg_ptr.cfm_ltr->transaction_id), 441 cfm_egress_id_string(ndo, msg_ptr.cfm_ltr->last_egress_id))); 442 443 ND_PRINT((ndo, "\n\t Next-Egress-ID %s, ttl %u", 444 cfm_egress_id_string(ndo, msg_ptr.cfm_ltr->next_egress_id), 445 msg_ptr.cfm_ltr->ttl)); 446 447 ND_PRINT((ndo, "\n\t Replay-Action %s (%u)", 448 tok2str(cfm_ltr_replay_action_values, 449 "Unknown", 450 msg_ptr.cfm_ltr->replay_action), 451 msg_ptr.cfm_ltr->replay_action)); 452 break; 453 454 /* 455 * No message decoder yet. 456 * Hexdump everything up until the start of the TLVs 457 */ 458 case CFM_OPCODE_LBR: 459 case CFM_OPCODE_LBM: 460 default: 461 if (tlen > cfm_common_header->first_tlv_offset) { 462 print_unknown_data(ndo, tptr, "\n\t ", 463 tlen - cfm_common_header->first_tlv_offset); 464 } 465 break; 466 } 467 468 /* 469 * Sanity check for not walking off. 470 */ 471 if (tlen <= cfm_common_header->first_tlv_offset) { 472 return; 473 } 474 475 tptr += cfm_common_header->first_tlv_offset; 476 tlen -= cfm_common_header->first_tlv_offset; 477 478 while (tlen > 0) { 479 cfm_tlv_header = (const struct cfm_tlv_header_t *)tptr; 480 481 /* Enough to read the tlv type ? */ 482 ND_TCHECK2(*tptr, 1); 483 cfm_tlv_type=cfm_tlv_header->type; 484 485 if (cfm_tlv_type != CFM_TLV_END) { 486 /* did we capture enough for fully decoding the object header ? */ 487 ND_TCHECK2(*tptr, sizeof(struct cfm_tlv_header_t)); 488 cfm_tlv_len=EXTRACT_16BITS(&cfm_tlv_header->length); 489 } else { 490 cfm_tlv_len = 0; 491 } 492 493 ND_PRINT((ndo, "\n\t%s TLV (0x%02x), length %u", 494 tok2str(cfm_tlv_values, "Unknown", cfm_tlv_type), 495 cfm_tlv_type, 496 cfm_tlv_len)); 497 498 /* sanity check for not walking off and infinite loop check. */ 499 if ((cfm_tlv_type != CFM_TLV_END) && 500 ((cfm_tlv_len + sizeof(struct cfm_tlv_header_t) > tlen) || 501 (!cfm_tlv_len))) { 502 print_unknown_data(ndo, tptr, "\n\t ", tlen); 503 return; 504 } 505 506 tptr += sizeof(struct cfm_tlv_header_t); 507 tlen -= sizeof(struct cfm_tlv_header_t); 508 tlv_ptr = tptr; 509 510 /* did we capture enough for fully decoding the object ? */ 511 if (cfm_tlv_type != CFM_TLV_END) { 512 ND_TCHECK2(*tptr, cfm_tlv_len); 513 } 514 hexdump = FALSE; 515 516 switch(cfm_tlv_type) { 517 case CFM_TLV_END: 518 /* we are done - bail out */ 519 return; 520 521 case CFM_TLV_PORT_STATUS: 522 ND_PRINT((ndo, ", Status: %s (%u)", 523 tok2str(cfm_tlv_port_status_values, "Unknown", *tptr), 524 *tptr)); 525 break; 526 527 case CFM_TLV_INTERFACE_STATUS: 528 ND_PRINT((ndo, ", Status: %s (%u)", 529 tok2str(cfm_tlv_interface_status_values, "Unknown", *tptr), 530 *tptr)); 531 break; 532 533 case CFM_TLV_PRIVATE: 534 ND_PRINT((ndo, ", Vendor: %s (%u), Sub-Type %u", 535 tok2str(oui_values,"Unknown", EXTRACT_24BITS(tptr)), 536 EXTRACT_24BITS(tptr), 537 *(tptr + 3))); 538 hexdump = TRUE; 539 break; 540 541 case CFM_TLV_SENDER_ID: 542 { 543 u_int chassis_id_type, chassis_id_length; 544 u_int mgmt_addr_length; 545 546 /* 547 * Check if there is a Chassis-ID. 548 */ 549 chassis_id_length = *tptr; 550 if (chassis_id_length > tlen) { 551 hexdump = TRUE; 552 break; 553 } 554 555 tptr++; 556 tlen--; 557 558 if (chassis_id_length) { 559 chassis_id_type = *tptr; 560 ND_PRINT((ndo, "\n\t Chassis-ID Type %s (%u), Chassis-ID length %u", 561 tok2str(cfm_tlv_senderid_chassisid_values, 562 "Unknown", 563 chassis_id_type), 564 chassis_id_type, 565 chassis_id_length)); 566 567 switch (chassis_id_type) { 568 case CFM_CHASSIS_ID_MAC_ADDRESS: 569 ND_PRINT((ndo, "\n\t MAC %s", etheraddr_string(ndo, tptr + 1))); 570 break; 571 572 case CFM_CHASSIS_ID_NETWORK_ADDRESS: 573 hexdump |= cfm_mgmt_addr_print(ndo, tptr); 574 break; 575 576 case CFM_CHASSIS_ID_INTERFACE_NAME: /* fall through */ 577 case CFM_CHASSIS_ID_INTERFACE_ALIAS: 578 case CFM_CHASSIS_ID_LOCAL: 579 case CFM_CHASSIS_ID_CHASSIS_COMPONENT: 580 case CFM_CHASSIS_ID_PORT_COMPONENT: 581 safeputs(ndo, tptr + 1, chassis_id_length); 582 break; 583 584 default: 585 hexdump = TRUE; 586 break; 587 } 588 } 589 590 tptr += chassis_id_length; 591 tlen -= chassis_id_length; 592 593 /* 594 * Check if there is a Management Address. 595 */ 596 mgmt_addr_length = *tptr; 597 if (mgmt_addr_length > tlen) { 598 hexdump = TRUE; 599 break; 600 } 601 602 tptr++; 603 tlen--; 604 605 if (mgmt_addr_length) { 606 hexdump |= cfm_mgmt_addr_print(ndo, tptr); 607 } 608 609 tptr += mgmt_addr_length; 610 tlen -= mgmt_addr_length; 611 612 } 613 break; 614 615 /* 616 * FIXME those are the defined TLVs that lack a decoder 617 * you are welcome to contribute code ;-) 618 */ 619 620 case CFM_TLV_DATA: 621 case CFM_TLV_REPLY_INGRESS: 622 case CFM_TLV_REPLY_EGRESS: 623 default: 624 hexdump = TRUE; 625 break; 626 } 627 /* do we want to see an additional hexdump ? */ 628 if (hexdump || ndo->ndo_vflag > 1) 629 print_unknown_data(ndo, tlv_ptr, "\n\t ", cfm_tlv_len); 630 631 tptr+=cfm_tlv_len; 632 tlen-=cfm_tlv_len; 633 } 634 return; 635 trunc: 636 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot")); 637 } 638
