print-cfm.c revision 1.1.1.6
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 #ifdef HAVE_CONFIG_H 21 #include "config.h" 22 #endif 23 24 #include <netdissect-stdinc.h> 25 26 #include <stdio.h> 27 28 #include "netdissect.h" 29 #include "extract.h" 30 #include "ether.h" 31 #include "addrtoname.h" 32 #include "oui.h" 33 #include "af.h" 34 35 struct cfm_common_header_t { 36 uint8_t mdlevel_version; 37 uint8_t opcode; 38 uint8_t flags; 39 uint8_t first_tlv_offset; 40 }; 41 42 #define CFM_VERSION 0 43 #define CFM_EXTRACT_VERSION(x) (((x)&0x1f)) 44 #define CFM_EXTRACT_MD_LEVEL(x) (((x)&0xe0)>>5) 45 46 #define CFM_OPCODE_CCM 1 47 #define CFM_OPCODE_LBR 2 48 #define CFM_OPCODE_LBM 3 49 #define CFM_OPCODE_LTR 4 50 #define CFM_OPCODE_LTM 5 51 52 static const struct tok cfm_opcode_values[] = { 53 { CFM_OPCODE_CCM, "Continouity Check Message"}, 54 { CFM_OPCODE_LBR, "Loopback Reply"}, 55 { CFM_OPCODE_LBM, "Loopback Message"}, 56 { CFM_OPCODE_LTR, "Linktrace Reply"}, 57 { CFM_OPCODE_LTM, "Linktrace Message"}, 58 { 0, NULL} 59 }; 60 61 /* 62 * Message Formats. 63 */ 64 struct cfm_ccm_t { 65 uint8_t sequence[4]; 66 uint8_t ma_epi[2]; 67 uint8_t md_nameformat; 68 uint8_t md_namelength; 69 uint8_t md_name[46]; /* md name and short ma name */ 70 uint8_t reserved_itu[16]; 71 uint8_t reserved[6]; 72 }; 73 74 /* 75 * Timer Bases for the CCM Interval field. 76 * Expressed in units of seconds. 77 */ 78 const float ccm_interval_base[8] = {0, 0.003333, 0.01, 0.1, 1, 10, 60, 600}; 79 #define CCM_INTERVAL_MIN_MULTIPLIER 3.25 80 #define CCM_INTERVAL_MAX_MULTIPLIER 3.5 81 82 #define CFM_CCM_RDI_FLAG 0x80 83 #define CFM_EXTRACT_CCM_INTERVAL(x) (((x)&0x07)) 84 85 #define CFM_CCM_MD_FORMAT_8021 0 86 #define CFM_CCM_MD_FORMAT_NONE 1 87 #define CFM_CCM_MD_FORMAT_DNS 2 88 #define CFM_CCM_MD_FORMAT_MAC 3 89 #define CFM_CCM_MD_FORMAT_CHAR 4 90 91 static const struct tok cfm_md_nameformat_values[] = { 92 { CFM_CCM_MD_FORMAT_8021, "IEEE 802.1"}, 93 { CFM_CCM_MD_FORMAT_NONE, "No MD Name present"}, 94 { CFM_CCM_MD_FORMAT_DNS, "DNS string"}, 95 { CFM_CCM_MD_FORMAT_MAC, "MAC + 16Bit Integer"}, 96 { CFM_CCM_MD_FORMAT_CHAR, "Character string"}, 97 { 0, NULL} 98 }; 99 100 #define CFM_CCM_MA_FORMAT_8021 0 101 #define CFM_CCM_MA_FORMAT_VID 1 102 #define CFM_CCM_MA_FORMAT_CHAR 2 103 #define CFM_CCM_MA_FORMAT_INT 3 104 #define CFM_CCM_MA_FORMAT_VPN 4 105 106 static const struct tok cfm_ma_nameformat_values[] = { 107 { CFM_CCM_MA_FORMAT_8021, "IEEE 802.1"}, 108 { CFM_CCM_MA_FORMAT_VID, "Primary VID"}, 109 { CFM_CCM_MA_FORMAT_CHAR, "Character string"}, 110 { CFM_CCM_MA_FORMAT_INT, "16Bit Integer"}, 111 { CFM_CCM_MA_FORMAT_VPN, "RFC2685 VPN-ID"}, 112 { 0, NULL} 113 }; 114 115 struct cfm_lbm_t { 116 uint8_t transaction_id[4]; 117 uint8_t reserved[4]; 118 }; 119 120 struct cfm_ltm_t { 121 uint8_t transaction_id[4]; 122 uint8_t egress_id[8]; 123 uint8_t ttl; 124 uint8_t original_mac[ETHER_ADDR_LEN]; 125 uint8_t target_mac[ETHER_ADDR_LEN]; 126 uint8_t reserved[3]; 127 }; 128 129 static const struct tok cfm_ltm_flag_values[] = { 130 { 0x80, "Use Forwarding-DB only"}, 131 { 0, NULL} 132 }; 133 134 struct cfm_ltr_t { 135 uint8_t transaction_id[4]; 136 uint8_t last_egress_id[8]; 137 uint8_t next_egress_id[8]; 138 uint8_t ttl; 139 uint8_t replay_action; 140 uint8_t reserved[6]; 141 }; 142 143 static const struct tok cfm_ltr_flag_values[] = { 144 { 0x80, "UseFDB Only"}, 145 { 0x40, "FwdYes"}, 146 { 0x20, "Terminal MEP"}, 147 { 0, NULL} 148 }; 149 150 static const struct tok cfm_ltr_replay_action_values[] = { 151 { 1, "Exact Match"}, 152 { 2, "Filtering DB"}, 153 { 3, "MIP CCM DB"}, 154 { 0, NULL} 155 }; 156 157 158 #define CFM_TLV_END 0 159 #define CFM_TLV_SENDER_ID 1 160 #define CFM_TLV_PORT_STATUS 2 161 #define CFM_TLV_INTERFACE_STATUS 3 162 #define CFM_TLV_DATA 4 163 #define CFM_TLV_REPLY_INGRESS 5 164 #define CFM_TLV_REPLY_EGRESS 6 165 #define CFM_TLV_PRIVATE 31 166 167 static const struct tok cfm_tlv_values[] = { 168 { CFM_TLV_END, "End"}, 169 { CFM_TLV_SENDER_ID, "Sender ID"}, 170 { CFM_TLV_PORT_STATUS, "Port status"}, 171 { CFM_TLV_INTERFACE_STATUS, "Interface status"}, 172 { CFM_TLV_DATA, "Data"}, 173 { CFM_TLV_REPLY_INGRESS, "Reply Ingress"}, 174 { CFM_TLV_REPLY_EGRESS, "Reply Egress"}, 175 { CFM_TLV_PRIVATE, "Organization Specific"}, 176 { 0, NULL} 177 }; 178 179 /* 180 * TLVs 181 */ 182 183 struct cfm_tlv_header_t { 184 uint8_t type; 185 uint8_t length[2]; 186 }; 187 188 /* FIXME define TLV formats */ 189 190 static const struct tok cfm_tlv_port_status_values[] = { 191 { 1, "Blocked"}, 192 { 2, "Up"}, 193 { 0, NULL} 194 }; 195 196 static const struct tok cfm_tlv_interface_status_values[] = { 197 { 1, "Up"}, 198 { 2, "Down"}, 199 { 3, "Testing"}, 200 { 5, "Dormant"}, 201 { 6, "not present"}, 202 { 7, "lower Layer down"}, 203 { 0, NULL} 204 }; 205 206 #define CFM_CHASSIS_ID_CHASSIS_COMPONENT 1 207 #define CFM_CHASSIS_ID_INTERFACE_ALIAS 2 208 #define CFM_CHASSIS_ID_PORT_COMPONENT 3 209 #define CFM_CHASSIS_ID_MAC_ADDRESS 4 210 #define CFM_CHASSIS_ID_NETWORK_ADDRESS 5 211 #define CFM_CHASSIS_ID_INTERFACE_NAME 6 212 #define CFM_CHASSIS_ID_LOCAL 7 213 214 static const struct tok cfm_tlv_senderid_chassisid_values[] = { 215 { 0, "Reserved"}, 216 { CFM_CHASSIS_ID_CHASSIS_COMPONENT, "Chassis component"}, 217 { CFM_CHASSIS_ID_INTERFACE_ALIAS, "Interface alias"}, 218 { CFM_CHASSIS_ID_PORT_COMPONENT, "Port component"}, 219 { CFM_CHASSIS_ID_MAC_ADDRESS, "MAC address"}, 220 { CFM_CHASSIS_ID_NETWORK_ADDRESS, "Network address"}, 221 { CFM_CHASSIS_ID_INTERFACE_NAME, "Interface name"}, 222 { CFM_CHASSIS_ID_LOCAL, "Locally assigned"}, 223 { 0, NULL} 224 }; 225 226 227 static int 228 cfm_mgmt_addr_print(netdissect_options *ndo, 229 register const u_char *tptr) 230 { 231 u_int mgmt_addr_type; 232 u_int hexdump = FALSE; 233 234 /* 235 * Altough AFIs are tpically 2 octects wide, 236 * 802.1ab specifies that this field width 237 * is only once octet 238 */ 239 mgmt_addr_type = *tptr; 240 ND_PRINT((ndo, "\n\t Management Address Type %s (%u)", 241 tok2str(af_values, "Unknown", mgmt_addr_type), 242 mgmt_addr_type)); 243 244 /* 245 * Resolve the passed in Address. 246 */ 247 switch(mgmt_addr_type) { 248 case AFNUM_INET: 249 ND_PRINT((ndo, ", %s", ipaddr_string(ndo, tptr + 1))); 250 break; 251 252 case AFNUM_INET6: 253 ND_PRINT((ndo, ", %s", ip6addr_string(ndo, tptr + 1))); 254 break; 255 256 default: 257 hexdump = TRUE; 258 break; 259 } 260 261 return hexdump; 262 } 263 264 /* 265 * The egress-ID string is a 16-Bit string plus a MAC address. 266 */ 267 static const char * 268 cfm_egress_id_string(netdissect_options *ndo, register const u_char *tptr) 269 { 270 static char egress_id_buffer[80]; 271 272 snprintf(egress_id_buffer, sizeof(egress_id_buffer), 273 "MAC 0x%4x-%s", 274 EXTRACT_16BITS(tptr), 275 etheraddr_string(ndo, tptr+2)); 276 277 return egress_id_buffer; 278 } 279 280 void 281 cfm_print(netdissect_options *ndo, 282 register const u_char *pptr, register u_int length) 283 { 284 const struct cfm_common_header_t *cfm_common_header; 285 const struct cfm_tlv_header_t *cfm_tlv_header; 286 const uint8_t *tptr, *tlv_ptr, *ma_name, *ma_nameformat, *ma_namelength; 287 u_int hexdump, tlen, cfm_tlv_len, cfm_tlv_type, ccm_interval; 288 289 290 union { 291 const struct cfm_ccm_t *cfm_ccm; 292 const struct cfm_lbm_t *cfm_lbm; 293 const struct cfm_ltm_t *cfm_ltm; 294 const struct cfm_ltr_t *cfm_ltr; 295 } msg_ptr; 296 297 tptr=pptr; 298 cfm_common_header = (const struct cfm_common_header_t *)pptr; 299 ND_TCHECK(*cfm_common_header); 300 301 /* 302 * Sanity checking of the header. 303 */ 304 if (CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version) != CFM_VERSION) { 305 ND_PRINT((ndo, "CFMv%u not supported, length %u", 306 CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version), length)); 307 return; 308 } 309 310 ND_PRINT((ndo, "CFMv%u %s, MD Level %u, length %u", 311 CFM_EXTRACT_VERSION(cfm_common_header->mdlevel_version), 312 tok2str(cfm_opcode_values, "unknown (%u)", cfm_common_header->opcode), 313 CFM_EXTRACT_MD_LEVEL(cfm_common_header->mdlevel_version), 314 length)); 315 316 /* 317 * In non-verbose mode just print the opcode and md-level. 318 */ 319 if (ndo->ndo_vflag < 1) { 320 return; 321 } 322 323 ND_PRINT((ndo, "\n\tFirst TLV offset %u", cfm_common_header->first_tlv_offset)); 324 325 tptr += sizeof(const struct cfm_common_header_t); 326 tlen = length - sizeof(struct cfm_common_header_t); 327 328 switch (cfm_common_header->opcode) { 329 case CFM_OPCODE_CCM: 330 msg_ptr.cfm_ccm = (const struct cfm_ccm_t *)tptr; 331 332 ccm_interval = CFM_EXTRACT_CCM_INTERVAL(cfm_common_header->flags); 333 ND_PRINT((ndo, ", Flags [CCM Interval %u%s]", 334 ccm_interval, 335 cfm_common_header->flags & CFM_CCM_RDI_FLAG ? 336 ", RDI" : "")); 337 338 /* 339 * Resolve the CCM interval field. 340 */ 341 if (ccm_interval) { 342 ND_PRINT((ndo, "\n\t CCM Interval %.3fs" 343 ", min CCM Lifetime %.3fs, max CCM Lifetime %.3fs", 344 ccm_interval_base[ccm_interval], 345 ccm_interval_base[ccm_interval] * CCM_INTERVAL_MIN_MULTIPLIER, 346 ccm_interval_base[ccm_interval] * CCM_INTERVAL_MAX_MULTIPLIER)); 347 } 348 349 ND_PRINT((ndo, "\n\t Sequence Number 0x%08x, MA-End-Point-ID 0x%04x", 350 EXTRACT_32BITS(msg_ptr.cfm_ccm->sequence), 351 EXTRACT_16BITS(msg_ptr.cfm_ccm->ma_epi))); 352 353 354 /* 355 * Resolve the MD fields. 356 */ 357 ND_PRINT((ndo, "\n\t MD Name Format %s (%u), MD Name length %u", 358 tok2str(cfm_md_nameformat_values, "Unknown", 359 msg_ptr.cfm_ccm->md_nameformat), 360 msg_ptr.cfm_ccm->md_nameformat, 361 msg_ptr.cfm_ccm->md_namelength)); 362 363 if (msg_ptr.cfm_ccm->md_nameformat != CFM_CCM_MD_FORMAT_NONE) { 364 ND_PRINT((ndo, "\n\t MD Name: ")); 365 switch (msg_ptr.cfm_ccm->md_nameformat) { 366 case CFM_CCM_MD_FORMAT_DNS: 367 case CFM_CCM_MD_FORMAT_CHAR: 368 safeputs(ndo, msg_ptr.cfm_ccm->md_name, msg_ptr.cfm_ccm->md_namelength); 369 break; 370 371 case CFM_CCM_MD_FORMAT_MAC: 372 ND_PRINT((ndo, "\n\t MAC %s", etheraddr_string(ndo, 373 msg_ptr.cfm_ccm->md_name))); 374 break; 375 376 /* FIXME add printers for those MD formats - hexdump for now */ 377 case CFM_CCM_MA_FORMAT_8021: 378 default: 379 print_unknown_data(ndo, msg_ptr.cfm_ccm->md_name, "\n\t ", 380 msg_ptr.cfm_ccm->md_namelength); 381 } 382 } 383 384 385 /* 386 * Resolve the MA fields. 387 */ 388 ma_nameformat = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength; 389 ma_namelength = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength + 1; 390 ma_name = msg_ptr.cfm_ccm->md_name + msg_ptr.cfm_ccm->md_namelength + 2; 391 392 ND_PRINT((ndo, "\n\t MA Name-Format %s (%u), MA name length %u", 393 tok2str(cfm_ma_nameformat_values, "Unknown", 394 *ma_nameformat), 395 *ma_nameformat, 396 *ma_namelength)); 397 398 ND_PRINT((ndo, "\n\t MA Name: ")); 399 switch (*ma_nameformat) { 400 case CFM_CCM_MA_FORMAT_CHAR: 401 safeputs(ndo, ma_name, *ma_namelength); 402 break; 403 404 /* FIXME add printers for those MA formats - hexdump for now */ 405 case CFM_CCM_MA_FORMAT_8021: 406 case CFM_CCM_MA_FORMAT_VID: 407 case CFM_CCM_MA_FORMAT_INT: 408 case CFM_CCM_MA_FORMAT_VPN: 409 default: 410 print_unknown_data(ndo, ma_name, "\n\t ", *ma_namelength); 411 } 412 break; 413 414 case CFM_OPCODE_LTM: 415 msg_ptr.cfm_ltm = (const struct cfm_ltm_t *)tptr; 416 417 ND_PRINT((ndo, ", Flags [%s]", 418 bittok2str(cfm_ltm_flag_values, "none", cfm_common_header->flags))); 419 420 ND_PRINT((ndo, "\n\t Transaction-ID 0x%08x, Egress-ID %s, ttl %u", 421 EXTRACT_32BITS(msg_ptr.cfm_ltm->transaction_id), 422 cfm_egress_id_string(ndo, msg_ptr.cfm_ltm->egress_id), 423 msg_ptr.cfm_ltm->ttl)); 424 425 ND_PRINT((ndo, "\n\t Original-MAC %s, Target-MAC %s", 426 etheraddr_string(ndo, msg_ptr.cfm_ltm->original_mac), 427 etheraddr_string(ndo, msg_ptr.cfm_ltm->target_mac))); 428 break; 429 430 case CFM_OPCODE_LTR: 431 msg_ptr.cfm_ltr = (const struct cfm_ltr_t *)tptr; 432 433 ND_PRINT((ndo, ", Flags [%s]", 434 bittok2str(cfm_ltr_flag_values, "none", cfm_common_header->flags))); 435 436 ND_PRINT((ndo, "\n\t Transaction-ID 0x%08x, Last-Egress-ID %s", 437 EXTRACT_32BITS(msg_ptr.cfm_ltr->transaction_id), 438 cfm_egress_id_string(ndo, msg_ptr.cfm_ltr->last_egress_id))); 439 440 ND_PRINT((ndo, "\n\t Next-Egress-ID %s, ttl %u", 441 cfm_egress_id_string(ndo, msg_ptr.cfm_ltr->next_egress_id), 442 msg_ptr.cfm_ltr->ttl)); 443 444 ND_PRINT((ndo, "\n\t Replay-Action %s (%u)", 445 tok2str(cfm_ltr_replay_action_values, 446 "Unknown", 447 msg_ptr.cfm_ltr->replay_action), 448 msg_ptr.cfm_ltr->replay_action)); 449 break; 450 451 /* 452 * No message decoder yet. 453 * Hexdump everything up until the start of the TLVs 454 */ 455 case CFM_OPCODE_LBR: 456 case CFM_OPCODE_LBM: 457 default: 458 if (tlen > cfm_common_header->first_tlv_offset) { 459 print_unknown_data(ndo, tptr, "\n\t ", 460 tlen - cfm_common_header->first_tlv_offset); 461 } 462 break; 463 } 464 465 /* 466 * Sanity check for not walking off. 467 */ 468 if (tlen <= cfm_common_header->first_tlv_offset) { 469 return; 470 } 471 472 tptr += cfm_common_header->first_tlv_offset; 473 tlen -= cfm_common_header->first_tlv_offset; 474 475 while (tlen > 0) { 476 cfm_tlv_header = (const struct cfm_tlv_header_t *)tptr; 477 478 /* Enough to read the tlv type ? */ 479 ND_TCHECK2(*tptr, 1); 480 cfm_tlv_type=cfm_tlv_header->type; 481 482 if (cfm_tlv_type != CFM_TLV_END) { 483 /* did we capture enough for fully decoding the object header ? */ 484 ND_TCHECK2(*tptr, sizeof(struct cfm_tlv_header_t)); 485 cfm_tlv_len=EXTRACT_16BITS(&cfm_tlv_header->length); 486 } else { 487 cfm_tlv_len = 0; 488 } 489 490 ND_PRINT((ndo, "\n\t%s TLV (0x%02x), length %u", 491 tok2str(cfm_tlv_values, "Unknown", cfm_tlv_type), 492 cfm_tlv_type, 493 cfm_tlv_len)); 494 495 /* sanity check for not walking off and infinite loop check. */ 496 if ((cfm_tlv_type != CFM_TLV_END) && 497 ((cfm_tlv_len + sizeof(struct cfm_tlv_header_t) > tlen) || 498 (!cfm_tlv_len))) { 499 print_unknown_data(ndo, tptr, "\n\t ", tlen); 500 return; 501 } 502 503 tptr += sizeof(struct cfm_tlv_header_t); 504 tlen -= sizeof(struct cfm_tlv_header_t); 505 tlv_ptr = tptr; 506 507 /* did we capture enough for fully decoding the object ? */ 508 if (cfm_tlv_type != CFM_TLV_END) { 509 ND_TCHECK2(*tptr, cfm_tlv_len); 510 } 511 hexdump = FALSE; 512 513 switch(cfm_tlv_type) { 514 case CFM_TLV_END: 515 /* we are done - bail out */ 516 return; 517 518 case CFM_TLV_PORT_STATUS: 519 ND_PRINT((ndo, ", Status: %s (%u)", 520 tok2str(cfm_tlv_port_status_values, "Unknown", *tptr), 521 *tptr)); 522 break; 523 524 case CFM_TLV_INTERFACE_STATUS: 525 ND_PRINT((ndo, ", Status: %s (%u)", 526 tok2str(cfm_tlv_interface_status_values, "Unknown", *tptr), 527 *tptr)); 528 break; 529 530 case CFM_TLV_PRIVATE: 531 ND_PRINT((ndo, ", Vendor: %s (%u), Sub-Type %u", 532 tok2str(oui_values,"Unknown", EXTRACT_24BITS(tptr)), 533 EXTRACT_24BITS(tptr), 534 *(tptr + 3))); 535 hexdump = TRUE; 536 break; 537 538 case CFM_TLV_SENDER_ID: 539 { 540 u_int chassis_id_type, chassis_id_length; 541 u_int mgmt_addr_length; 542 543 /* 544 * Check if there is a Chassis-ID. 545 */ 546 chassis_id_length = *tptr; 547 if (chassis_id_length > tlen) { 548 hexdump = TRUE; 549 break; 550 } 551 552 tptr++; 553 tlen--; 554 555 if (chassis_id_length) { 556 chassis_id_type = *tptr; 557 ND_PRINT((ndo, "\n\t Chassis-ID Type %s (%u), Chassis-ID length %u", 558 tok2str(cfm_tlv_senderid_chassisid_values, 559 "Unknown", 560 chassis_id_type), 561 chassis_id_type, 562 chassis_id_length)); 563 564 switch (chassis_id_type) { 565 case CFM_CHASSIS_ID_MAC_ADDRESS: 566 ND_PRINT((ndo, "\n\t MAC %s", etheraddr_string(ndo, tptr + 1))); 567 break; 568 569 case CFM_CHASSIS_ID_NETWORK_ADDRESS: 570 hexdump |= cfm_mgmt_addr_print(ndo, tptr); 571 break; 572 573 case CFM_CHASSIS_ID_INTERFACE_NAME: /* fall through */ 574 case CFM_CHASSIS_ID_INTERFACE_ALIAS: 575 case CFM_CHASSIS_ID_LOCAL: 576 case CFM_CHASSIS_ID_CHASSIS_COMPONENT: 577 case CFM_CHASSIS_ID_PORT_COMPONENT: 578 safeputs(ndo, tptr + 1, chassis_id_length); 579 break; 580 581 default: 582 hexdump = TRUE; 583 break; 584 } 585 } 586 587 tptr += chassis_id_length; 588 tlen -= chassis_id_length; 589 590 /* 591 * Check if there is a Management Address. 592 */ 593 mgmt_addr_length = *tptr; 594 if (mgmt_addr_length > tlen) { 595 hexdump = TRUE; 596 break; 597 } 598 599 tptr++; 600 tlen--; 601 602 if (mgmt_addr_length) { 603 hexdump |= cfm_mgmt_addr_print(ndo, tptr); 604 } 605 606 tptr += mgmt_addr_length; 607 tlen -= mgmt_addr_length; 608 609 } 610 break; 611 612 /* 613 * FIXME those are the defined TLVs that lack a decoder 614 * you are welcome to contribute code ;-) 615 */ 616 617 case CFM_TLV_DATA: 618 case CFM_TLV_REPLY_INGRESS: 619 case CFM_TLV_REPLY_EGRESS: 620 default: 621 hexdump = TRUE; 622 break; 623 } 624 /* do we want to see an additional hexdump ? */ 625 if (hexdump || ndo->ndo_vflag > 1) 626 print_unknown_data(ndo, tlv_ptr, "\n\t ", cfm_tlv_len); 627 628 tptr+=cfm_tlv_len; 629 tlen-=cfm_tlv_len; 630 } 631 return; 632 trunc: 633 ND_PRINT((ndo, "\n\t\t packet exceeded snapshot")); 634 } 635
Indexes created Wed Aug 19 00:25:20 UTC 2026