The Tcpdump Group git mirrors - tcpdump/blob - print-lmp.c

   1 /*
   2  * Redistribution and use in source and binary forms, with or without
   3  * modification, are permitted provided that: (1) source code
   4  * distributions retain the above copyright notice and this paragraph
   5  * in its entirety, and (2) distributions including binary code include
   6  * the above copyright notice and this paragraph in its entirety in
   7  * the documentation or other materials provided with the distribution.
   8  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
   9  * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
  10  * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  11  * FOR A PARTICULAR PURPOSE.
  12  *
  13  * Support for the Link Management Protocol as per rfc 4204.
  14  *
  15  * Original code by Hannes Gredler (hannes@juniper.net)
  16  * Support for LMP service discovery extensions (defined by UNI 1.0) added
  17  * by Manu Pathak (mapathak@cisco.com), May 2005
  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 "interface.h"
  28 #include "extract.h"
  29 #include "addrtoname.h"
  30 #include "gmpls.h"
  31
  32 /*
  33  * LMP common header
  34  *
  35  *  0                   1                   2                   3
  36  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  37  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  38  * | Vers  |      (Reserved)       |    Flags      |    Msg Type   |
  39  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  40  * |          LMP Length           |          (Reserved)           |
  41  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  42  */
  43
  44 struct lmp_common_header {
  45     u_int8_t version_res[2];
  46     u_int8_t flags;
  47     u_int8_t msg_type;
  48     u_int8_t length[2];
  49     u_int8_t reserved[2];
  50 };
  51
  52 #define LMP_VERSION            1
  53 #define LMP_EXTRACT_VERSION(x) (((x)&0xf0)>>4)
  54
  55 static const struct tok lmp_header_flag_values[] = {
  56     { 0x01, "Control Channel Down"},
  57     { 0x02, "LMP restart"},
  58     { 0, NULL}
  59 };
  60
  61 static const struct tok lmp_obj_te_link_flag_values[] = {
  62     { 0x01, "Fault Management Supported"},
  63     { 0x02, "Link Verification Supported"},
  64     { 0, NULL}
  65 };
  66
  67 static const struct tok lmp_obj_data_link_flag_values[] = {
  68     { 0x01, "Data Link Port"},
  69     { 0x02, "Allocated for user traffic"},
  70     { 0x04, "Failed link"},
  71     { 0, NULL}
  72 };
  73
  74 static const struct tok lmp_obj_channel_status_values[] = {
  75     { 1, "Signal Okay"},
  76     { 2, "Signal Degraded"},
  77     { 3, "Signal Fail"},
  78     { 0, NULL}
  79 };
  80
  81 static const struct tok lmp_obj_begin_verify_flag_values[] = {
  82     { 0x0001, "Verify all links"},
  83     { 0x0002, "Data link type"},
  84     { 0, NULL}
  85 };
  86
  87 static const struct tok lmp_obj_begin_verify_error_values[] = {
  88     { 0x01, "Link Verification Procedure Not supported"},
  89     { 0x02, "Unwilling to verify"},
  90     { 0x04, "Unsupported verification transport mechanism"},
  91     { 0x08, "Link-Id configuration error"},
  92     { 0x10, "Unknown object c-type"},
  93     { 0, NULL}
  94 };
  95
  96 static const struct tok lmp_obj_link_summary_error_values[] = {
  97     { 0x01, "Unacceptable non-negotiable LINK-SUMMARY parameters"},
  98     { 0x02, "Renegotiate LINK-SUMMARY parameters"},
  99     { 0x04, "Invalid TE-LINK Object"},
 100     { 0x08, "Invalid DATA-LINK Object"},
 101     { 0x10, "Unknown TE-LINK Object c-type"},
 102     { 0x20, "Unknown DATA-LINK Object c-type"},
 103     { 0, NULL}
 104 };
 105
 106 /* Service Config Supported Protocols Flags */
 107 static const struct tok lmp_obj_service_config_sp_flag_values[] = {
 108     { 0x01, "RSVP Supported"},
 109     { 0x02, "LDP Supported"},
 110     { 0, NULL}
 111 };
 112
 113 /* Service Config Client Port Service Attribute Transparency Flags */
 114 static const struct tok lmp_obj_service_config_cpsa_tp_flag_values[] = {
 115     { 0x01, "Path/VC Overhead Transparency Supported"},
 116     { 0x02, "Line/MS Overhead Transparency Supported"},
 117     { 0x04, "Section/RS Overhead Transparency Supported"},
 118     { 0, NULL}
 119 };
 120
 121 /* Service Config Client Port Service Attribute Contiguous Concatenation Types Flags */
 122 static const struct tok lmp_obj_service_config_cpsa_cct_flag_values[] = {
 123     { 0x01, "Contiguous Concatenation Types Supported"},
 124     { 0, NULL}
 125 };
 126
 127 /* Service Config Network Service Attributes Transparency Flags */
 128 static const struct tok lmp_obj_service_config_nsa_transparency_flag_values[] = {
 129     { 0x01, "Standard SOH/RSOH Transparency Supported"},
 130     { 0x02, "Standard LOH/MSOH Transparency Supported"},
 131     { 0, NULL}
 132 };
 133
 134 /* Service Config Network Service Attributes TCM Monitoring Flags */
 135 static const struct tok lmp_obj_service_config_nsa_tcm_flag_values[] = {
 136     { 0x01, "Transparent Tandem Connection Monitoring Supported"},
 137     { 0, NULL}
 138 };
 139
 140 /* Network Service Attributes Network Diversity Flags */
 141 static const struct tok lmp_obj_service_config_nsa_network_diversity_flag_values[] = {
 142     { 0x01, "Node Diversity Supported"},
 143     { 0x02, "Link Diversity Supported"},
 144     { 0x04, "SRLG Diversity Supported"},
 145     { 0, NULL}
 146 };
 147
 148 #define LMP_MSGTYPE_CONFIG                 1
 149 #define LMP_MSGTYPE_CONFIG_ACK             2
 150 #define LMP_MSGTYPE_CONFIG_NACK            3
 151 #define LMP_MSGTYPE_HELLO                  4
 152 #define LMP_MSGTYPE_VERIFY_BEGIN           5
 153 #define LMP_MSGTYPE_VERIFY_BEGIN_ACK       6
 154 #define LMP_MSGTYPE_VERIFY_BEGIN_NACK      7
 155 #define LMP_MSGTYPE_VERIFY_END             8
 156 #define LMP_MSGTYPE_VERIFY_END_ACK         9
 157 #define LMP_MSGTYPE_TEST                  10
 158 #define LMP_MSGTYPE_TEST_STATUS_SUCCESS   11
 159 #define LMP_MSGTYPE_TEST_STATUS_FAILURE   12
 160 #define LMP_MSGTYPE_TEST_STATUS_ACK       13
 161 #define LMP_MSGTYPE_LINK_SUMMARY          14
 162 #define LMP_MSGTYPE_LINK_SUMMARY_ACK      15
 163 #define LMP_MSGTYPE_LINK_SUMMARY_NACK     16
 164 #define LMP_MSGTYPE_CHANNEL_STATUS        17
 165 #define LMP_MSGTYPE_CHANNEL_STATUS_ACK    18
 166 #define LMP_MSGTYPE_CHANNEL_STATUS_REQ    19
 167 #define LMP_MSGTYPE_CHANNEL_STATUS_RESP   20
 168 /* LMP Service Discovery message types defined by UNI 1.0 */
 169 #define LMP_MSGTYPE_SERVICE_CONFIG        50
 170 #define LMP_MSGTYPE_SERVICE_CONFIG_ACK    51
 171 #define LMP_MSGTYPE_SERVICE_CONFIG_NACK   52
 172
 173 static const struct tok lmp_msg_type_values[] = {
 174     { LMP_MSGTYPE_CONFIG, "Config"},
 175     { LMP_MSGTYPE_CONFIG_ACK, "Config ACK"},
 176     { LMP_MSGTYPE_CONFIG_NACK, "Config NACK"},
 177     { LMP_MSGTYPE_HELLO, "Hello"},
 178     { LMP_MSGTYPE_VERIFY_BEGIN, "Begin Verify"},
 179     { LMP_MSGTYPE_VERIFY_BEGIN_ACK, "Begin Verify ACK"},
 180     { LMP_MSGTYPE_VERIFY_BEGIN_NACK, "Begin Verify NACK"},
 181     { LMP_MSGTYPE_VERIFY_END, "End Verify"},
 182     { LMP_MSGTYPE_VERIFY_END_ACK, "End Verify ACK"},
 183     { LMP_MSGTYPE_TEST, "Test"},
 184     { LMP_MSGTYPE_TEST_STATUS_SUCCESS, "Test Status Success"},
 185     { LMP_MSGTYPE_TEST_STATUS_FAILURE, "Test Status Failure"},
 186     { LMP_MSGTYPE_TEST_STATUS_ACK, "Test Status ACK"},
 187     { LMP_MSGTYPE_LINK_SUMMARY, "Link Summary"},
 188     { LMP_MSGTYPE_LINK_SUMMARY_ACK, "Link Summary ACK"},
 189     { LMP_MSGTYPE_LINK_SUMMARY_NACK, "Link Summary NACK"},
 190     { LMP_MSGTYPE_CHANNEL_STATUS, "Channel Status"},
 191     { LMP_MSGTYPE_CHANNEL_STATUS_ACK, "Channel Status ACK"},
 192     { LMP_MSGTYPE_CHANNEL_STATUS_REQ, "Channel Status Request"},
 193     { LMP_MSGTYPE_CHANNEL_STATUS_RESP, "Channel Status Response"},
 194     { LMP_MSGTYPE_SERVICE_CONFIG, "Service Config"},
 195     { LMP_MSGTYPE_SERVICE_CONFIG_ACK, "Service Config ACK"},
 196     { LMP_MSGTYPE_SERVICE_CONFIG_NACK, "Service Config NACK"},
 197     { 0, NULL}
 198 };
 199
 200 /*
 201  * LMP object header
 202  *
 203  *  0                   1                   2                   3
 204  *  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
 205  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 206  * |N|   C-Type    |     Class     |            Length             |
 207  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 208  * |                                                               |
 209  * //                       (object contents)                     //
 210  * |                                                               |
 211  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 212  */
 213
 214 struct lmp_object_header {
 215     u_int8_t ctype;
 216     u_int8_t class_num;
 217     u_int8_t length[2];
 218 };
 219
 220 #define LMP_OBJ_CC_ID                 1
 221 #define LMP_OBJ_NODE_ID               2
 222 #define LMP_OBJ_LINK_ID               3
 223 #define LMP_OBJ_INTERFACE_ID          4
 224 #define LMP_OBJ_MESSAGE_ID            5
 225 #define LMP_OBJ_CONFIG                6
 226 #define LMP_OBJ_HELLO                 7
 227 #define LMP_OBJ_VERIFY_BEGIN          8
 228 #define LMP_OBJ_VERIFY_BEGIN_ACK      9
 229 #define LMP_OBJ_VERIFY_ID            10
 230 #define LMP_OBJ_TE_LINK              11
 231 #define LMP_OBJ_DATA_LINK            12
 232 #define LMP_OBJ_CHANNEL_STATUS       13
 233 #define LMP_OBJ_CHANNEL_STATUS_REQ   14
 234 #define LMP_OBJ_ERROR_CODE           20
 235
 236 #define LMP_OBJ_SERVICE_CONFIG       51 /* defined in UNI 1.0 */
 237
 238 static const struct tok lmp_obj_values[] = {
 239     { LMP_OBJ_CC_ID, "Control Channel ID" },
 240     { LMP_OBJ_NODE_ID, "Node ID" },
 241     { LMP_OBJ_LINK_ID, "Link ID" },
 242     { LMP_OBJ_INTERFACE_ID, "Interface ID" },
 243     { LMP_OBJ_MESSAGE_ID, "Message ID" },
 244     { LMP_OBJ_CONFIG, "Configuration" },
 245     { LMP_OBJ_HELLO, "Hello" },
 246     { LMP_OBJ_VERIFY_BEGIN, "Verify Begin" },
 247     { LMP_OBJ_VERIFY_BEGIN_ACK, "Verify Begin ACK" },
 248     { LMP_OBJ_VERIFY_ID, "Verify ID" },
 249     { LMP_OBJ_TE_LINK, "TE Link" },
 250     { LMP_OBJ_DATA_LINK, "Data Link" },
 251     { LMP_OBJ_CHANNEL_STATUS, "Channel Status" },
 252     { LMP_OBJ_CHANNEL_STATUS_REQ, "Channel Status Request" },
 253     { LMP_OBJ_ERROR_CODE, "Error Code" },
 254     { LMP_OBJ_SERVICE_CONFIG, "Service Config" },
 255
 256     { 0, NULL}
 257 };
 258
 259 #define INT_SWITCHING_TYPE_SUBOBJ 1
 260 #define WAVELENGTH_SUBOBJ         2
 261
 262 static const struct tok lmp_data_link_subobj[] = {
 263     { INT_SWITCHING_TYPE_SUBOBJ, "Interface Switching Type" },
 264     { WAVELENGTH_SUBOBJ        , "Wavelength" },
 265     { 0, NULL}
 266 };
 267
 268 #define LMP_CTYPE_IPV4       1
 269 #define LMP_CTYPE_IPV6       2
 270
 271 #define LMP_CTYPE_LOC        1
 272 #define LMP_CTYPE_RMT        2
 273 #define LMP_CTYPE_UNMD       3
 274
 275 #define LMP_CTYPE_IPV4_LOC   1
 276 #define LMP_CTYPE_IPV4_RMT   2
 277 #define LMP_CTYPE_IPV6_LOC   3
 278 #define LMP_CTYPE_IPV6_RMT   4
 279 #define LMP_CTYPE_UNMD_LOC   5
 280 #define LMP_CTYPE_UNMD_RMT   6
 281
 282 #define LMP_CTYPE_1          1
 283 #define LMP_CTYPE_2          2
 284
 285 #define LMP_CTYPE_HELLO_CONFIG  1
 286 #define LMP_CTYPE_HELLO         1
 287
 288 #define LMP_CTYPE_BEGIN_VERIFY_ERROR 1
 289 #define LMP_CTYPE_LINK_SUMMARY_ERROR 2
 290
 291 /* C-Types for Service Config Object */
 292 #define LMP_CTYPE_SERVICE_CONFIG_SP                   1
 293 #define LMP_CTYPE_SERVICE_CONFIG_CPSA                 2
 294 #define LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM     3
 295 #define LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY    4
 296
 297 /*
 298  * Different link types allowed in the Client Port Service Attributes
 299  * subobject defined for LMP Service Discovery in the UNI 1.0 spec
 300  */
 301 #define LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH     5 /* UNI 1.0 Sec 9.4.2 */
 302 #define LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET   6 /* UNI 1.0 Sec 9.4.2 */
 303
 304 /*
 305  * the ctypes are not globally unique so for
 306  * translating it to strings we build a table based
 307  * on objects offsetted by the ctype
 308  */
 309
 310 static const struct tok lmp_ctype_values[] = {
 311     { 256*LMP_OBJ_CC_ID+LMP_CTYPE_LOC, "Local" },
 312     { 256*LMP_OBJ_CC_ID+LMP_CTYPE_RMT, "Remote" },
 313     { 256*LMP_OBJ_NODE_ID+LMP_CTYPE_LOC, "Local" },
 314     { 256*LMP_OBJ_NODE_ID+LMP_CTYPE_RMT, "Remote" },
 315     { 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV4_LOC, "IPv4 Local" },
 316     { 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV4_RMT, "IPv4 Remote" },
 317     { 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV6_LOC, "IPv6 Local" },
 318     { 256*LMP_OBJ_LINK_ID+LMP_CTYPE_IPV6_RMT, "IPv6 Remote" },
 319     { 256*LMP_OBJ_LINK_ID+LMP_CTYPE_UNMD_LOC, "Unnumbered Local" },
 320     { 256*LMP_OBJ_LINK_ID+LMP_CTYPE_UNMD_RMT, "Unnumbered Remote" },
 321     { 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV4_LOC, "IPv4 Local" },
 322     { 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV4_RMT, "IPv4 Remote" },
 323     { 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV6_LOC, "IPv6 Local" },
 324     { 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_IPV6_RMT, "IPv6 Remote" },
 325     { 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_UNMD_LOC, "Unnumbered Local" },
 326     { 256*LMP_OBJ_INTERFACE_ID+LMP_CTYPE_UNMD_RMT, "Unnumbered Remote" },
 327     { 256*LMP_OBJ_MESSAGE_ID+LMP_CTYPE_1, "1" },
 328     { 256*LMP_OBJ_MESSAGE_ID+LMP_CTYPE_2, "2" },
 329     { 256*LMP_OBJ_CONFIG+LMP_CTYPE_1, "1" },
 330     { 256*LMP_OBJ_HELLO+LMP_CTYPE_1, "1" },
 331     { 256*LMP_OBJ_VERIFY_BEGIN+LMP_CTYPE_1, "1" },
 332     { 256*LMP_OBJ_VERIFY_BEGIN_ACK+LMP_CTYPE_1, "1" },
 333     { 256*LMP_OBJ_VERIFY_ID+LMP_CTYPE_1, "1" },
 334     { 256*LMP_OBJ_TE_LINK+LMP_CTYPE_IPV4, "IPv4" },
 335     { 256*LMP_OBJ_TE_LINK+LMP_CTYPE_IPV6, "IPv6" },
 336     { 256*LMP_OBJ_TE_LINK+LMP_CTYPE_UNMD, "Unnumbered" },
 337     { 256*LMP_OBJ_DATA_LINK+LMP_CTYPE_IPV4, "IPv4" },
 338     { 256*LMP_OBJ_DATA_LINK+LMP_CTYPE_IPV6, "IPv6" },
 339     { 256*LMP_OBJ_DATA_LINK+LMP_CTYPE_UNMD, "Unnumbered" },
 340     { 256*LMP_OBJ_CHANNEL_STATUS+LMP_CTYPE_IPV4, "IPv4" },
 341     { 256*LMP_OBJ_CHANNEL_STATUS+LMP_CTYPE_IPV6, "IPv6" },
 342     { 256*LMP_OBJ_CHANNEL_STATUS+LMP_CTYPE_UNMD, "Unnumbered" },
 343     { 256*LMP_OBJ_CHANNEL_STATUS_REQ+LMP_CTYPE_IPV4, "IPv4" },
 344     { 256*LMP_OBJ_CHANNEL_STATUS_REQ+LMP_CTYPE_IPV6, "IPv6" },
 345     { 256*LMP_OBJ_CHANNEL_STATUS_REQ+LMP_CTYPE_UNMD, "Unnumbered" },
 346     { 256*LMP_OBJ_ERROR_CODE+LMP_CTYPE_1, "1" },
 347     { 256*LMP_OBJ_ERROR_CODE+LMP_CTYPE_2, "2" },
 348     { 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_SP, "1" },
 349     { 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_CPSA, "2" },
 350     { 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM, "3" },
 351     { 256*LMP_OBJ_SERVICE_CONFIG+LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY, "4" },
 352     { 0, NULL}
 353 };
 354
 355 void
 356 lmp_print(netdissect_options *ndo,
 357           register const u_char *pptr, register u_int len) {
 358
 359     const struct lmp_common_header *lmp_com_header;
 360     const struct lmp_object_header *lmp_obj_header;
 361     const u_char *tptr,*obj_tptr;
 362     int tlen,lmp_obj_len,lmp_obj_ctype,obj_tlen;
 363     int hexdump;
 364     int offset,subobj_type,subobj_len,total_subobj_len;
 365     int link_type;
 366
 367     union { /* int to float conversion buffer */
 368         float f;
 369         u_int32_t i;
 370     } bw;
 371
 372     tptr=pptr;
 373     lmp_com_header = (const struct lmp_common_header *)pptr;
 374     ND_TCHECK(*lmp_com_header);
 375
 376     /*
 377      * Sanity checking of the header.
 378      */
 379     if (LMP_EXTRACT_VERSION(lmp_com_header->version_res[0]) != LMP_VERSION) {
 380         ND_PRINT((ndo, "LMP version %u packet not supported",
 381                LMP_EXTRACT_VERSION(lmp_com_header->version_res[0])));
 382         return;
 383     }
 384
 385     /* in non-verbose mode just lets print the basic Message Type*/
 386     if (ndo->ndo_vflag < 1) {
 387         ND_PRINT((ndo, "LMPv%u %s Message, length: %u",
 388                LMP_EXTRACT_VERSION(lmp_com_header->version_res[0]),
 389                tok2str(lmp_msg_type_values, "unknown (%u)",lmp_com_header->msg_type),
 390                len));
 391         return;
 392     }
 393
 394     /* ok they seem to want to know everything - lets fully decode it */
 395
 396     tlen=EXTRACT_16BITS(lmp_com_header->length);
 397
 398     ND_PRINT((ndo, "\n\tLMPv%u, msg-type: %s, Flags: [%s], length: %u",
 399            LMP_EXTRACT_VERSION(lmp_com_header->version_res[0]),
 400            tok2str(lmp_msg_type_values, "unknown, type: %u",lmp_com_header->msg_type),
 401            bittok2str(lmp_header_flag_values,"none",lmp_com_header->flags),
 402            tlen));
 403
 404     tptr+=sizeof(const struct lmp_common_header);
 405     tlen-=sizeof(const struct lmp_common_header);
 406
 407     while(tlen>0) {
 408         /* did we capture enough for fully decoding the object header ? */
 409         if (!ND_TTEST2(*tptr, sizeof(struct lmp_object_header)))
 410             goto trunc;
 411
 412         lmp_obj_header = (const struct lmp_object_header *)tptr;
 413         lmp_obj_len=EXTRACT_16BITS(lmp_obj_header->length);
 414         lmp_obj_ctype=(lmp_obj_header->ctype)&0x7f;
 415
 416         if(lmp_obj_len % 4 || lmp_obj_len < 4)
 417             return;
 418
 419         ND_PRINT((ndo, "\n\t  %s Object (%u), Class-Type: %s (%u) Flags: [%snegotiable], length: %u",
 420                tok2str(lmp_obj_values,
 421                        "Unknown",
 422                        lmp_obj_header->class_num),
 423                lmp_obj_header->class_num,
 424                tok2str(lmp_ctype_values,
 425                        "Unknown",
 426                        ((lmp_obj_header->class_num)<<8)+lmp_obj_ctype),
 427                lmp_obj_ctype,
 428                (lmp_obj_header->ctype)&0x80 ? "" : "non-",
 429                lmp_obj_len));
 430
 431         obj_tptr=tptr+sizeof(struct lmp_object_header);
 432         obj_tlen=lmp_obj_len-sizeof(struct lmp_object_header);
 433
 434         /* did we capture enough for fully decoding the object ? */
 435         if (!ND_TTEST2(*tptr, lmp_obj_len))
 436             goto trunc;
 437         hexdump=FALSE;
 438
 439         switch(lmp_obj_header->class_num) {
 440
 441         case LMP_OBJ_CC_ID:
 442             switch(lmp_obj_ctype) {
 443             case LMP_CTYPE_LOC:
 444             case LMP_CTYPE_RMT:
 445                 ND_PRINT((ndo, "\n\t    Control Channel ID: %u (0x%08x)",
 446                        EXTRACT_32BITS(obj_tptr),
 447                        EXTRACT_32BITS(obj_tptr)));
 448                 break;
 449
 450             default:
 451                 hexdump=TRUE;
 452             }
 453             break;
 454
 455         case LMP_OBJ_LINK_ID:
 456         case LMP_OBJ_INTERFACE_ID:
 457             switch(lmp_obj_ctype) {
 458             case LMP_CTYPE_IPV4_LOC:
 459             case LMP_CTYPE_IPV4_RMT:
 460                 ND_PRINT((ndo, "\n\t    IPv4 Link ID: %s (0x%08x)",
 461                        ipaddr_string(obj_tptr),
 462                        EXTRACT_32BITS(obj_tptr)));
 463                 break;
 464 #ifdef INET6
 465             case LMP_CTYPE_IPV6_LOC:
 466             case LMP_CTYPE_IPV6_RMT:
 467                 ND_PRINT((ndo, "\n\t    IPv6 Link ID: %s (0x%08x)",
 468                        ip6addr_string(obj_tptr),
 469                        EXTRACT_32BITS(obj_tptr)));
 470                 break;
 471 #endif
 472             case LMP_CTYPE_UNMD_LOC:
 473             case LMP_CTYPE_UNMD_RMT:
 474                 ND_PRINT((ndo, "\n\t    Link ID: %u (0x%08x)",
 475                        EXTRACT_32BITS(obj_tptr),
 476                        EXTRACT_32BITS(obj_tptr)));
 477                 break;
 478             default:
 479                 hexdump=TRUE;
 480             }
 481             break;
 482
 483         case LMP_OBJ_MESSAGE_ID:
 484             switch(lmp_obj_ctype) {
 485             case LMP_CTYPE_1:
 486                 ND_PRINT((ndo, "\n\t    Message ID: %u (0x%08x)",
 487                        EXTRACT_32BITS(obj_tptr),
 488                        EXTRACT_32BITS(obj_tptr)));
 489                 break;
 490             case LMP_CTYPE_2:
 491                 ND_PRINT((ndo, "\n\t    Message ID Ack: %u (0x%08x)",
 492                        EXTRACT_32BITS(obj_tptr),
 493                        EXTRACT_32BITS(obj_tptr)));
 494                 break;
 495             default:
 496                 hexdump=TRUE;
 497             }
 498             break;
 499
 500         case LMP_OBJ_NODE_ID:
 501             switch(lmp_obj_ctype) {
 502             case LMP_CTYPE_LOC:
 503             case LMP_CTYPE_RMT:
 504                 ND_PRINT((ndo, "\n\t    Node ID: %s (0x%08x)",
 505                        ipaddr_string(obj_tptr),
 506                        EXTRACT_32BITS(obj_tptr)));
 507                 break;
 508
 509             default:
 510                 hexdump=TRUE;
 511             }
 512             break;
 513
 514         case LMP_OBJ_CONFIG:
 515             switch(lmp_obj_ctype) {
 516             case LMP_CTYPE_HELLO_CONFIG:
 517                 ND_PRINT((ndo, "\n\t    Hello Interval: %u\n\t    Hello Dead Interval: %u",
 518                        EXTRACT_16BITS(obj_tptr),
 519                        EXTRACT_16BITS(obj_tptr+2)));
 520                 break;
 521
 522             default:
 523                 hexdump=TRUE;
 524             }
 525             break;
 526
 527         case LMP_OBJ_HELLO:
 528             switch(lmp_obj_ctype) {
 529             case LMP_CTYPE_HELLO:
 530                 ND_PRINT((ndo, "\n\t    Tx Seq: %u, Rx Seq: %u",
 531                        EXTRACT_32BITS(obj_tptr),
 532                        EXTRACT_32BITS(obj_tptr+4)));
 533                 break;
 534
 535             default:
 536                 hexdump=TRUE;
 537             }
 538             break;
 539
 540         case LMP_OBJ_TE_LINK:
 541                 ND_PRINT((ndo, "\n\t    Flags: [%s]",
 542                 bittok2str(lmp_obj_te_link_flag_values,
 543                         "none",
 544                         EXTRACT_16BITS(obj_tptr)>>8)));
 545
 546             switch(lmp_obj_ctype) {
 547             case LMP_CTYPE_IPV4:
 548                 ND_PRINT((ndo, "\n\t    Local Link-ID: %s (0x%08x)"
 549                        "\n\t    Remote Link-ID: %s (0x%08x)",
 550                        ipaddr_string(obj_tptr+4),
 551                        EXTRACT_32BITS(obj_tptr+4),
 552                        ipaddr_string(obj_tptr+8),
 553                        EXTRACT_32BITS(obj_tptr+8)));
 554                 break;
 555
 556 #ifdef INET6
 557             case LMP_CTYPE_IPV6:
 558 #endif
 559             case LMP_CTYPE_UNMD:
 560             default:
 561                 hexdump=TRUE;
 562             }
 563             break;
 564
 565         case LMP_OBJ_DATA_LINK:
 566                 ND_PRINT((ndo, "\n\t    Flags: [%s]",
 567                 bittok2str(lmp_obj_data_link_flag_values,
 568                         "none",
 569                         EXTRACT_16BITS(obj_tptr)>>8)));
 570
 571             switch(lmp_obj_ctype) {
 572             case LMP_CTYPE_IPV4:
 573             case LMP_CTYPE_UNMD:
 574                 ND_PRINT((ndo, "\n\t    Local Interface ID: %s (0x%08x)"
 575                        "\n\t    Remote Interface ID: %s (0x%08x)",
 576                        ipaddr_string(obj_tptr+4),
 577                        EXTRACT_32BITS(obj_tptr+4),
 578                        ipaddr_string(obj_tptr+8),
 579                        EXTRACT_32BITS(obj_tptr+8)));
 580
 581                 total_subobj_len = lmp_obj_len - 16;
 582                 offset = 12;
 583                 while (total_subobj_len > 0 && hexdump == FALSE ) {
 584                         subobj_type = EXTRACT_16BITS(obj_tptr+offset)>>8;
 585                         subobj_len  = EXTRACT_16BITS(obj_tptr+offset)&0x00FF;
 586                         ND_PRINT((ndo, "\n\t    Subobject, Type: %s (%u), Length: %u",
 587                                 tok2str(lmp_data_link_subobj,
 588                                         "Unknown",
 589                                         subobj_type),
 590                                         subobj_type,
 591                                         subobj_len));
 592                         switch(subobj_type) {
 593                         case INT_SWITCHING_TYPE_SUBOBJ:
 594                                 ND_PRINT((ndo, "\n\t      Switching Type: %s (%u)",
 595                                         tok2str(gmpls_switch_cap_values,
 596                                                 "Unknown",
 597                                                 EXTRACT_16BITS(obj_tptr+offset+2)>>8),
 598                                         EXTRACT_16BITS(obj_tptr+offset+2)>>8));
 599                                 ND_PRINT((ndo, "\n\t      Encoding Type: %s (%u)",
 600                                         tok2str(gmpls_encoding_values,
 601                                                 "Unknown",
 602                                                 EXTRACT_16BITS(obj_tptr+offset+2)&0x00FF),
 603                                         EXTRACT_16BITS(obj_tptr+offset+2)&0x00FF));
 604                                 bw.i = EXTRACT_32BITS(obj_tptr+offset+4);
 605                                 ND_PRINT((ndo, "\n\t      Min Reservable Bandwidth: %.3f Mbps",
 606                                        bw.f*8/1000000));
 607                                 bw.i = EXTRACT_32BITS(obj_tptr+offset+8);
 608                                 ND_PRINT((ndo, "\n\t      Max Reservable Bandwidth: %.3f Mbps",
 609                                        bw.f*8/1000000));
 610                                 break;
 611                         case WAVELENGTH_SUBOBJ:
 612                                 ND_PRINT((ndo, "\n\t      Wavelength: %u",
 613                                         EXTRACT_32BITS(obj_tptr+offset+4)));
 614                                 break;
 615                         default:
 616                                 /* Any Unknown Subobject ==> Exit loop */
 617                                 hexdump=TRUE;
 618                                 break;
 619                         }
 620                         total_subobj_len-=subobj_len;
 621                         offset+=subobj_len;
 622                 }
 623
 624                 break;
 625 #ifdef INET6
 626             case LMP_CTYPE_IPV6:
 627 #endif
 628             default:
 629                 hexdump=TRUE;
 630             }
 631             break;
 632
 633         case LMP_OBJ_VERIFY_BEGIN:
 634             switch(lmp_obj_ctype) {
 635             case LMP_CTYPE_1:
 636                 ND_PRINT((ndo, "\n\t    Flags: %s",
 637                 bittok2str(lmp_obj_begin_verify_flag_values,
 638                         "none",
 639                         EXTRACT_16BITS(obj_tptr))));
 640                 ND_PRINT((ndo, "\n\t    Verify Interval: %u",
 641                         EXTRACT_16BITS(obj_tptr+2)));
 642                 ND_PRINT((ndo, "\n\t    Data links: %u",
 643                         EXTRACT_32BITS(obj_tptr+4)));
 644                 ND_PRINT((ndo, "\n\t    Encoding type: %s",
 645                         tok2str(gmpls_encoding_values, "Unknown", *(obj_tptr+8))));
 646                 ND_PRINT((ndo, "\n\t    Verify Transport Mechanism: %u (0x%x)%s",
 647                         EXTRACT_16BITS(obj_tptr+10),
 648                         EXTRACT_16BITS(obj_tptr+10),
 649                         EXTRACT_16BITS(obj_tptr+10)&8000 ? " (Payload test messages capable)" : ""));
 650                 bw.i = EXTRACT_32BITS(obj_tptr+12);
 651                 ND_PRINT((ndo, "\n\t    Transmission Rate: %.3f Mbps",bw.f*8/1000000));
 652                 ND_PRINT((ndo, "\n\t    Wavelength: %u",
 653                         EXTRACT_32BITS(obj_tptr+16)));
 654                 break;
 655
 656             default:
 657                 hexdump=TRUE;
 658             }
 659             break;
 660
 661         case LMP_OBJ_VERIFY_BEGIN_ACK:
 662             switch(lmp_obj_ctype) {
 663             case LMP_CTYPE_1:
 664                 ND_PRINT((ndo, "\n\t    Verify Dead Interval: %u"
 665                        "\n\t    Verify Transport Response: %u",
 666                        EXTRACT_16BITS(obj_tptr),
 667                        EXTRACT_16BITS(obj_tptr+2)));
 668                 break;
 669
 670             default:
 671                 hexdump=TRUE;
 672             }
 673             break;
 674
 675         case LMP_OBJ_VERIFY_ID:
 676             switch(lmp_obj_ctype) {
 677             case LMP_CTYPE_1:
 678                 ND_PRINT((ndo, "\n\t    Verify ID: %u",
 679                        EXTRACT_32BITS(obj_tptr)));
 680                 break;
 681
 682             default:
 683                 hexdump=TRUE;
 684             }
 685             break;
 686
 687         case LMP_OBJ_CHANNEL_STATUS:
 688             switch(lmp_obj_ctype) {
 689             case LMP_CTYPE_IPV4:
 690             case LMP_CTYPE_UNMD:
 691                 offset = 0;
 692                 /* Decode pairs: <Interface_ID (4 bytes), Channel_status (4 bytes)> */
 693                 while (offset < (lmp_obj_len-(int)sizeof(struct lmp_object_header)) ) {
 694                         ND_PRINT((ndo, "\n\t    Interface ID: %s (0x%08x)",
 695                         ipaddr_string(obj_tptr+offset),
 696                         EXTRACT_32BITS(obj_tptr+offset)));
 697
 698                         ND_PRINT((ndo, "\n\t\t    Active: %s (%u)",             (EXTRACT_32BITS(obj_tptr+offset+4)>>31) ?
 699                                                 "Allocated" : "Non-allocated",
 700                                 (EXTRACT_32BITS(obj_tptr+offset+4)>>31)));
 701
 702                         ND_PRINT((ndo, "\n\t\t    Direction: %s (%u)", (EXTRACT_32BITS(obj_tptr+offset+4)>>30)&0x1 ?
 703                                                 "Transmit" : "Receive",
 704                                 (EXTRACT_32BITS(obj_tptr+offset+4)>>30)&0x1));
 705
 706                         ND_PRINT((ndo, "\n\t\t    Channel Status: %s (%u)",
 707                                         tok2str(lmp_obj_channel_status_values,
 708                                         "Unknown",
 709                                         EXTRACT_32BITS(obj_tptr+offset+4)&0x3FFFFFF),
 710                         EXTRACT_32BITS(obj_tptr+offset+4)&0x3FFFFFF));
 711                         offset+=8;
 712                 }
 713                 break;
 714 #ifdef INET6
 715             case LMP_CTYPE_IPV6:
 716 #endif
 717             default:
 718                 hexdump=TRUE;
 719             }
 720             break;
 721
 722         case LMP_OBJ_CHANNEL_STATUS_REQ:
 723             switch(lmp_obj_ctype) {
 724             case LMP_CTYPE_IPV4:
 725             case LMP_CTYPE_UNMD:
 726                 offset = 0;
 727                 while (offset < (lmp_obj_len-(int)sizeof(struct lmp_object_header)) ) {
 728                         ND_PRINT((ndo, "\n\t    Interface ID: %s (0x%08x)",
 729                         ipaddr_string(obj_tptr+offset),
 730                         EXTRACT_32BITS(obj_tptr+offset)));
 731                         offset+=4;
 732                 }
 733                 break;
 734 #ifdef INET6
 735             case LMP_CTYPE_IPV6:
 736 #endif
 737             default:
 738                 hexdump=TRUE;
 739             }
 740             break;
 741
 742         case LMP_OBJ_ERROR_CODE:
 743             switch(lmp_obj_ctype) {
 744             case LMP_CTYPE_BEGIN_VERIFY_ERROR:
 745                 ND_PRINT((ndo, "\n\t    Error Code: %s",
 746                 bittok2str(lmp_obj_begin_verify_error_values,
 747                         "none",
 748                         EXTRACT_32BITS(obj_tptr))));
 749                 break;
 750
 751             case LMP_CTYPE_LINK_SUMMARY_ERROR:
 752                 ND_PRINT((ndo, "\n\t    Error Code: %s",
 753                 bittok2str(lmp_obj_link_summary_error_values,
 754                         "none",
 755                         EXTRACT_32BITS(obj_tptr))));
 756                 break;
 757             default:
 758                 hexdump=TRUE;
 759             }
 760             break;
 761
 762         case LMP_OBJ_SERVICE_CONFIG:
 763             switch (lmp_obj_ctype) {
 764             case LMP_CTYPE_SERVICE_CONFIG_SP:
 765
 766                 ND_PRINT((ndo, "\n\t Flags: %s",
 767                        bittok2str(lmp_obj_service_config_sp_flag_values,
 768                                   "none",
 769                                   EXTRACT_16BITS(obj_tptr)>>8)));
 770
 771                 ND_PRINT((ndo, "\n\t  UNI Version: %u",
 772                        EXTRACT_16BITS(obj_tptr) & 0x00FF));
 773
 774                 break;
 775
 776             case LMP_CTYPE_SERVICE_CONFIG_CPSA:
 777
 778                 link_type = EXTRACT_16BITS(obj_tptr)>>8;
 779
 780                 ND_PRINT((ndo, "\n\t Link Type: %s (%u)",
 781                        tok2str(lmp_sd_service_config_cpsa_link_type_values,
 782                                "Unknown", link_type),
 783                        link_type));
 784
 785                 if (link_type == LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH) {
 786                     ND_PRINT((ndo, "\n\t Signal Type: %s (%u)",
 787                            tok2str(lmp_sd_service_config_cpsa_signal_type_sdh_values,
 788                                    "Unknown",
 789                                    EXTRACT_16BITS(obj_tptr) & 0x00FF),
 790                            EXTRACT_16BITS(obj_tptr) & 0x00FF));
 791                 }
 792
 793                 if (link_type == LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET) {
 794                     ND_PRINT((ndo, "\n\t Signal Type: %s (%u)",
 795                            tok2str(lmp_sd_service_config_cpsa_signal_type_sonet_values,
 796                                    "Unknown",
 797                                    EXTRACT_16BITS(obj_tptr) & 0x00FF),
 798                            EXTRACT_16BITS(obj_tptr) & 0x00FF));
 799                 }
 800
 801                 ND_PRINT((ndo, "\n\t Transparency: %s",
 802                        bittok2str(lmp_obj_service_config_cpsa_tp_flag_values,
 803                                   "none",
 804                                   EXTRACT_16BITS(obj_tptr+2)>>8)));
 805
 806                 ND_PRINT((ndo, "\n\t Contiguous Concatenation Types: %s",
 807                        bittok2str(lmp_obj_service_config_cpsa_cct_flag_values,
 808                                   "none",
 809                                   EXTRACT_16BITS(obj_tptr+2)>>8 & 0x00FF)));
 810
 811                 ND_PRINT((ndo, "\n\t Minimum NCC: %u",
 812                        EXTRACT_16BITS(obj_tptr+4)));
 813
 814                 ND_PRINT((ndo, "\n\t Maximum NCC: %u",
 815                        EXTRACT_16BITS(obj_tptr+6)));
 816
 817                 ND_PRINT((ndo, "\n\t Minimum NVC:%u",
 818                        EXTRACT_16BITS(obj_tptr+8)));
 819
 820                 ND_PRINT((ndo, "\n\t Maximum NVC:%u",
 821                        EXTRACT_16BITS(obj_tptr+10)));
 822
 823                 ND_PRINT((ndo, "\n\t    Local Interface ID: %s (0x%08x)",
 824                        ipaddr_string(obj_tptr+12),
 825                        EXTRACT_32BITS(obj_tptr+12)));
 826
 827                 break;
 828
 829             case LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM:
 830
 831                 ND_PRINT((ndo, "\n\t Transparency Flags: %s",
 832                        bittok2str(
 833                            lmp_obj_service_config_nsa_transparency_flag_values,
 834                            "none",
 835                            EXTRACT_32BITS(obj_tptr))));
 836
 837                 ND_PRINT((ndo, "\n\t TCM Monitoring Flags: %s",
 838                        bittok2str(
 839                            lmp_obj_service_config_nsa_tcm_flag_values,
 840                            "none",
 841                            EXTRACT_16BITS(obj_tptr+6) & 0x00FF)));
 842
 843                 break;
 844
 845             case LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY:
 846
 847                 ND_PRINT((ndo, "\n\t Diversity: Flags: %s",
 848                        bittok2str(
 849                            lmp_obj_service_config_nsa_network_diversity_flag_values,
 850                            "none",
 851                            EXTRACT_16BITS(obj_tptr+2) & 0x00FF)));
 852                 break;
 853
 854             default:
 855                 hexdump = TRUE;
 856             };
 857
 858         break;
 859
 860         default:
 861             if (ndo->ndo_vflag <= 1)
 862                 print_unknown_data(ndo,obj_tptr,"\n\t    ",obj_tlen);
 863             break;
 864         }
 865         /* do we want to see an additionally hexdump ? */
 866         if (ndo->ndo_vflag > 1 || hexdump==TRUE)
 867             print_unknown_data(ndo,tptr+sizeof(struct lmp_object_header),"\n\t    ",
 868                                lmp_obj_len-sizeof(struct lmp_object_header));
 869
 870         tptr+=lmp_obj_len;
 871         tlen-=lmp_obj_len;
 872     }
 873     return;
 874 trunc:
 875     ND_PRINT((ndo, "\n\t\t packet exceeded snapshot"));
 876 }
 877 /*
 878  * Local Variables:
 879  * c-style: whitesmith
 880  * c-basic-offset: 8
 881  * End:
 882  */