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

   1 /*
   2  * Copyright (c) 1998-2007 The TCPDUMP project
   3  * Copyright (c) 2009  Florian Forster
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that: (1) source code
   7  * distributions retain the above copyright notice and this paragraph
   8  * in its entirety, and (2) distributions including binary code include
   9  * the above copyright notice and this paragraph in its entirety in
  10  * the documentation or other materials provided with the distribution.
  11  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
  12  * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
  13  * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  14  * FOR A PARTICULAR PURPOSE.
  15  *
  16  * Optimized Link State Protocl (OLSR) as per rfc3626
  17  *
  18  * Original code by Hannes Gredler <hannes@juniper.net>
  19  * IPv6 additions by Florian Forster <octo at verplant.org>
  20  */
  21
  22 #define NETDISSECT_REWORKED
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <tcpdump-stdinc.h>
  28
  29 #include "interface.h"
  30 #include "addrtoname.h"
  31 #include "extract.h"
  32
  33 /*
  34  * RFC 3626 common header
  35  *
  36  *  0                   1                   2                   3
  37  *  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
  38  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  39  * |         Packet Length         |    Packet Sequence Number     |
  40  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  41  * |  Message Type |     Vtime     |         Message Size          |
  42  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  43  * |                      Originator Address                       |
  44  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  45  * |  Time To Live |   Hop Count   |    Message Sequence Number    |
  46  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  47  * |                                                               |
  48  * :                            MESSAGE                            :
  49  * |                                                               |
  50  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  51  * |  Message Type |     Vtime     |         Message Size          |
  52  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  53  * |                      Originator Address                       |
  54  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  55  * |  Time To Live |   Hop Count   |    Message Sequence Number    |
  56  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  57  * |                                                               |
  58  * :                            MESSAGE                            :
  59  * |                                                               |
  60  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  61  * :                                                               :
  62  */
  63
  64 struct olsr_common {
  65     uint8_t packet_len[2];
  66     uint8_t packet_seq[2];
  67 };
  68
  69 #define OLSR_HELLO_MSG         1 /* rfc3626 */
  70 #define OLSR_TC_MSG            2 /* rfc3626 */
  71 #define OLSR_MID_MSG           3 /* rfc3626 */
  72 #define OLSR_HNA_MSG           4 /* rfc3626 */
  73 #define OLSR_POWERINFO_MSG   128
  74 #define OLSR_NAMESERVICE_MSG 130
  75 #define OLSR_HELLO_LQ_MSG    201 /* LQ extensions olsr.org */
  76 #define OLSR_TC_LQ_MSG       202 /* LQ extensions olsr.org */
  77
  78 static const struct tok olsr_msg_values[] = {
  79     { OLSR_HELLO_MSG, "Hello" },
  80     { OLSR_TC_MSG, "TC" },
  81     { OLSR_MID_MSG, "MID" },
  82     { OLSR_HNA_MSG, "HNA" },
  83     { OLSR_POWERINFO_MSG, "Powerinfo" },
  84     { OLSR_NAMESERVICE_MSG, "Nameservice" },
  85     { OLSR_HELLO_LQ_MSG, "Hello-LQ" },
  86     { OLSR_TC_LQ_MSG, "TC-LQ" },
  87     { 0, NULL}
  88 };
  89
  90 struct olsr_msg4 {
  91     uint8_t msg_type;
  92     uint8_t vtime;
  93     uint8_t msg_len[2];
  94     uint8_t originator[4];
  95     uint8_t ttl;
  96     uint8_t hopcount;
  97     uint8_t msg_seq[2];
  98 };
  99
 100 struct olsr_msg6 {
 101     uint8_t msg_type;
 102     uint8_t vtime;
 103     uint8_t msg_len[2];
 104     uint8_t originator[16];
 105     uint8_t ttl;
 106     uint8_t hopcount;
 107     uint8_t msg_seq[2];
 108 };
 109
 110 struct olsr_hello {
 111     uint8_t res[2];
 112     uint8_t htime;
 113     uint8_t will;
 114 };
 115
 116 struct olsr_hello_link {
 117     uint8_t link_code;
 118     uint8_t res;
 119     uint8_t len[2];
 120 };
 121
 122 struct olsr_tc {
 123     uint8_t ans_seq[2];
 124     uint8_t res[2];
 125 };
 126
 127 struct olsr_hna4 {
 128     uint8_t network[4];
 129     uint8_t mask[4];
 130 };
 131
 132 struct olsr_hna6 {
 133     uint8_t network[16];
 134     uint8_t mask[16];
 135 };
 136
 137
 138 #define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
 139 #define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
 140
 141 static const struct tok olsr_link_type_values[] = {
 142     { 0, "Unspecified" },
 143     { 1, "Asymmetric" },
 144     { 2, "Symmetric" },
 145     { 3, "Lost" },
 146     { 0, NULL}
 147 };
 148
 149 static const struct tok olsr_neighbor_type_values[] = {
 150     { 0, "Not-Neighbor" },
 151     { 1, "Symmetric" },
 152     { 2, "Symmetric-MPR" },
 153     { 0, NULL}
 154 };
 155
 156 struct olsr_lq_neighbor4 {
 157     uint8_t neighbor[4];
 158     uint8_t link_quality;
 159     uint8_t neighbor_link_quality;
 160     uint8_t res[2];
 161 };
 162
 163 struct olsr_lq_neighbor6 {
 164     uint8_t neighbor[16];
 165     uint8_t link_quality;
 166     uint8_t neighbor_link_quality;
 167     uint8_t res[2];
 168 };
 169
 170 /*
 171  * macro to convert the 8-bit mantissa/exponent to a double float
 172  * taken from olsr.org.
 173  */
 174 #define VTIME_SCALE_FACTOR    0.0625
 175 #define ME_TO_DOUBLE(me) \
 176   (double)(VTIME_SCALE_FACTOR*(1+(double)(me>>4)/16)*(double)(1<<(me&0x0F)))
 177
 178 /*
 179  * print a neighbor list with LQ extensions.
 180  */
 181 static void
 182 olsr_print_lq_neighbor4(netdissect_options *ndo,
 183                         const u_char *msg_data, u_int hello_len)
 184 {
 185     struct olsr_lq_neighbor4 *lq_neighbor;
 186
 187     while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
 188
 189         lq_neighbor = (struct olsr_lq_neighbor4 *)msg_data;
 190
 191         ND_PRINT((ndo, "\n\t      neighbor %s, link-quality %.2lf%%"
 192                ", neighbor-link-quality %.2lf%%",
 193                ipaddr_string(ndo, lq_neighbor->neighbor),
 194                ((double)lq_neighbor->link_quality/2.55),
 195                ((double)lq_neighbor->neighbor_link_quality/2.55)));
 196
 197         msg_data += sizeof(struct olsr_lq_neighbor4);
 198         hello_len -= sizeof(struct olsr_lq_neighbor4);
 199     }
 200 }
 201
 202 #if INET6
 203 static void
 204 olsr_print_lq_neighbor6(netdissect_options *ndo,
 205                         const u_char *msg_data, u_int hello_len)
 206 {
 207     struct olsr_lq_neighbor6 *lq_neighbor;
 208
 209     while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
 210
 211         lq_neighbor = (struct olsr_lq_neighbor6 *)msg_data;
 212
 213         ND_PRINT((ndo, "\n\t      neighbor %s, link-quality %.2lf%%"
 214                ", neighbor-link-quality %.2lf%%",
 215                ip6addr_string(ndo, lq_neighbor->neighbor),
 216                ((double)lq_neighbor->link_quality/2.55),
 217                ((double)lq_neighbor->neighbor_link_quality/2.55)));
 218
 219         msg_data += sizeof(struct olsr_lq_neighbor6);
 220         hello_len -= sizeof(struct olsr_lq_neighbor6);
 221     }
 222 }
 223 #endif /* INET6 */
 224
 225 /*
 226  * print a neighbor list.
 227  */
 228 static void
 229 olsr_print_neighbor(netdissect_options *ndo,
 230                     const u_char *msg_data, u_int hello_len)
 231 {
 232     int neighbor;
 233
 234     ND_PRINT((ndo, "\n\t      neighbor\n\t\t"));
 235     neighbor = 1;
 236
 237     while (hello_len >= sizeof(struct in_addr)) {
 238
 239         /* print 4 neighbors per line */
 240
 241         ND_PRINT((ndo, "%s%s", ipaddr_string(ndo, msg_data),
 242                neighbor % 4 == 0 ? "\n\t\t" : " "));
 243
 244         msg_data += sizeof(struct in_addr);
 245         hello_len -= sizeof(struct in_addr);
 246     }
 247 }
 248
 249
 250 void
 251 olsr_print(netdissect_options *ndo,
 252            const u_char *pptr, u_int length, int is_ipv6)
 253 {
 254     union {
 255         const struct olsr_common *common;
 256         const struct olsr_msg4 *msg4;
 257         const struct olsr_msg6 *msg6;
 258         const struct olsr_hello *hello;
 259         const struct olsr_hello_link *hello_link;
 260         const struct olsr_tc *tc;
 261         const struct olsr_hna4 *hna;
 262     } ptr;
 263
 264     u_int msg_type, msg_len, msg_tlen, hello_len;
 265     uint16_t name_entry_type, name_entry_len;
 266     u_int name_entry_padding;
 267     uint8_t link_type, neighbor_type;
 268     const u_char *tptr, *msg_data;
 269
 270     tptr = pptr;
 271
 272     if (length < sizeof(struct olsr_common)) {
 273         goto trunc;
 274     }
 275
 276     ND_TCHECK2(*tptr, sizeof(struct olsr_common));
 277
 278     ptr.common = (struct olsr_common *)tptr;
 279     length = min(length, EXTRACT_16BITS(ptr.common->packet_len));
 280
 281     ND_PRINT((ndo, "OLSRv%i, seq 0x%04x, length %u",
 282             (is_ipv6 == 0) ? 4 : 6,
 283             EXTRACT_16BITS(ptr.common->packet_seq),
 284             length));
 285
 286     tptr += sizeof(struct olsr_common);
 287
 288     /*
 289      * In non-verbose mode, just print version.
 290      */
 291     if (ndo->ndo_vflag < 1) {
 292         return;
 293     }
 294
 295     while (tptr < (pptr+length)) {
 296         union
 297         {
 298             struct olsr_msg4 *v4;
 299             struct olsr_msg6 *v6;
 300         } msgptr;
 301         int msg_len_valid = 0;
 302
 303         ND_TCHECK2(*tptr, sizeof(struct olsr_msg4));
 304
 305 #if INET6
 306         if (is_ipv6)
 307         {
 308             msgptr.v6 = (struct olsr_msg6 *) tptr;
 309             msg_type = msgptr.v6->msg_type;
 310             msg_len = EXTRACT_16BITS(msgptr.v6->msg_len);
 311             if ((msg_len >= sizeof (struct olsr_msg6))
 312                     && (msg_len <= length))
 313                 msg_len_valid = 1;
 314
 315             /* infinite loop check */
 316             if (msg_type == 0 || msg_len == 0) {
 317                 return;
 318             }
 319
 320             ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
 321                     "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
 322                     tok2str(olsr_msg_values, "Unknown", msg_type),
 323                     msg_type, ip6addr_string(ndo, msgptr.v6->originator),
 324                     msgptr.v6->ttl,
 325                     msgptr.v6->hopcount,
 326                     ME_TO_DOUBLE(msgptr.v6->vtime),
 327                     EXTRACT_16BITS(msgptr.v6->msg_seq),
 328                     msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
 329
 330             msg_tlen = msg_len - sizeof(struct olsr_msg6);
 331             msg_data = tptr + sizeof(struct olsr_msg6);
 332         }
 333         else /* (!is_ipv6) */
 334 #endif /* INET6 */
 335         {
 336             msgptr.v4 = (struct olsr_msg4 *) tptr;
 337             msg_type = msgptr.v4->msg_type;
 338             msg_len = EXTRACT_16BITS(msgptr.v4->msg_len);
 339             if ((msg_len >= sizeof (struct olsr_msg4))
 340                     && (msg_len <= length))
 341                 msg_len_valid = 1;
 342
 343             /* infinite loop check */
 344             if (msg_type == 0 || msg_len == 0) {
 345                 return;
 346             }
 347
 348             ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
 349                     "\n\t  vtime %.3lfs, msg-seq 0x%04x, length %u%s",
 350                     tok2str(olsr_msg_values, "Unknown", msg_type),
 351                     msg_type, ipaddr_string(ndo, msgptr.v4->originator),
 352                     msgptr.v4->ttl,
 353                     msgptr.v4->hopcount,
 354                     ME_TO_DOUBLE(msgptr.v4->vtime),
 355                     EXTRACT_16BITS(msgptr.v4->msg_seq),
 356                     msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
 357
 358             msg_tlen = msg_len - sizeof(struct olsr_msg4);
 359             msg_data = tptr + sizeof(struct olsr_msg4);
 360         }
 361
 362         switch (msg_type) {
 363         case OLSR_HELLO_MSG:
 364         case OLSR_HELLO_LQ_MSG:
 365             ND_TCHECK2(*msg_data, sizeof(struct olsr_hello));
 366
 367             ptr.hello = (struct olsr_hello *)msg_data;
 368             ND_PRINT((ndo, "\n\t  hello-time %.3lfs, MPR willingness %u",
 369                    ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will));
 370             msg_data += sizeof(struct olsr_hello);
 371             msg_tlen -= sizeof(struct olsr_hello);
 372
 373             while (msg_tlen >= sizeof(struct olsr_hello_link)) {
 374                 int hello_len_valid = 0;
 375
 376                 /*
 377                  * link-type.
 378                  */
 379                 ND_TCHECK2(*msg_data, sizeof(struct olsr_hello_link));
 380
 381                 ptr.hello_link = (struct olsr_hello_link *)msg_data;
 382
 383                 hello_len = EXTRACT_16BITS(ptr.hello_link->len);
 384                 link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code);
 385                 neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code);
 386
 387                 if ((hello_len <= msg_tlen)
 388                         && (hello_len >= sizeof(struct olsr_hello_link)))
 389                     hello_len_valid = 1;
 390
 391                 ND_PRINT((ndo, "\n\t    link-type %s, neighbor-type %s, len %u%s",
 392                        tok2str(olsr_link_type_values, "Unknown", link_type),
 393                        tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
 394                        hello_len,
 395                        (hello_len_valid == 0) ? " (invalid)" : ""));
 396
 397                 if (hello_len_valid == 0)
 398                     break;
 399
 400                 msg_data += sizeof(struct olsr_hello_link);
 401                 msg_tlen -= sizeof(struct olsr_hello_link);
 402                 hello_len -= sizeof(struct olsr_hello_link);
 403
 404                 if (msg_type == OLSR_HELLO_MSG) {
 405                     olsr_print_neighbor(ndo, msg_data, hello_len);
 406                 } else {
 407 #if INET6
 408                     if (is_ipv6)
 409                         olsr_print_lq_neighbor6(ndo, msg_data, hello_len);
 410                     else
 411 #endif
 412                         olsr_print_lq_neighbor4(ndo, msg_data, hello_len);
 413                 }
 414
 415                 msg_data += hello_len;
 416                 msg_tlen -= hello_len;
 417             }
 418             break;
 419
 420         case OLSR_TC_MSG:
 421         case OLSR_TC_LQ_MSG:
 422             ND_TCHECK2(*msg_data, sizeof(struct olsr_tc));
 423
 424             ptr.tc = (struct olsr_tc *)msg_data;
 425             ND_PRINT((ndo, "\n\t    advertised neighbor seq 0x%04x",
 426                    EXTRACT_16BITS(ptr.tc->ans_seq)));
 427             msg_data += sizeof(struct olsr_tc);
 428             msg_tlen -= sizeof(struct olsr_tc);
 429
 430             if (msg_type == OLSR_TC_MSG) {
 431                 olsr_print_neighbor(ndo, msg_data, msg_tlen);
 432             } else {
 433 #if INET6
 434                 if (is_ipv6)
 435                     olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen);
 436                 else
 437 #endif
 438                     olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen);
 439             }
 440             break;
 441
 442         case OLSR_MID_MSG:
 443         {
 444             size_t addr_size = sizeof(struct in_addr);
 445
 446 #if INET6
 447             if (is_ipv6)
 448                 addr_size = sizeof(struct in6_addr);
 449 #endif
 450
 451             while (msg_tlen >= addr_size) {
 452                 ND_TCHECK2(*msg_data, addr_size);
 453 #if INET6
 454                 ND_PRINT((ndo, "\n\t  interface address %s",
 455                         is_ipv6 ? ip6addr_string(ndo, msg_data) :
 456                         ipaddr_string(ndo, msg_data)));
 457 #else
 458                 ND_PRINT((ndo, "\n\t  interface address %s",
 459                         ipaddr_string(ndo, msg_data)));
 460 #endif
 461
 462                 msg_data += addr_size;
 463                 msg_tlen -= addr_size;
 464             }
 465             break;
 466         }
 467
 468         case OLSR_HNA_MSG:
 469             ND_PRINT((ndo, "\n\t  Advertised networks (total %u)",
 470                     (unsigned int) (msg_tlen / sizeof(struct olsr_hna6))));
 471 #if INET6
 472             if (is_ipv6)
 473             {
 474                 int i = 0;
 475                 while (msg_tlen >= sizeof(struct olsr_hna6)) {
 476                     struct olsr_hna6 *hna6;
 477
 478                     ND_TCHECK2(*msg_data, sizeof(struct olsr_hna6));
 479
 480                     hna6 = (struct olsr_hna6 *)msg_data;
 481
 482                     ND_PRINT((ndo, "\n\t    #%i: %s/%u",
 483                             i, ip6addr_string(ndo, hna6->network),
 484                             mask62plen (hna6->mask)));
 485
 486                     msg_data += sizeof(struct olsr_hna6);
 487                     msg_tlen -= sizeof(struct olsr_hna6);
 488                 }
 489             }
 490             else
 491 #endif
 492             {
 493                 int col = 0;
 494                 while (msg_tlen >= sizeof(struct olsr_hna4)) {
 495                     ND_TCHECK2(*msg_data, sizeof(struct olsr_hna4));
 496
 497                     ptr.hna = (struct olsr_hna4 *)msg_data;
 498
 499                     /* print 4 prefixes per line */
 500                     ND_PRINT((ndo, "%s%s/%u",
 501                             col == 0 ? "\n\t    " : ", ",
 502                             ipaddr_string(ndo, ptr.hna->network),
 503                             mask2plen(EXTRACT_32BITS(ptr.hna->mask))));
 504
 505                     msg_data += sizeof(struct olsr_hna4);
 506                     msg_tlen -= sizeof(struct olsr_hna4);
 507
 508                     col = (col + 1) % 4;
 509                 }
 510             }
 511             break;
 512
 513         case OLSR_NAMESERVICE_MSG:
 514         {
 515             u_int name_entries = EXTRACT_16BITS(msg_data+2);
 516             u_int addr_size = 4;
 517             int name_entries_valid = 0;
 518             u_int i;
 519
 520             if (is_ipv6)
 521                 addr_size = 16;
 522
 523             if ((name_entries > 0)
 524                     && ((name_entries * (4 + addr_size)) <= msg_tlen))
 525                 name_entries_valid = 1;
 526
 527             if (msg_tlen < 4)
 528                 goto trunc;
 529             ND_TCHECK2(*msg_data, 4);
 530
 531             ND_PRINT((ndo, "\n\t  Version %u, Entries %u%s",
 532                    EXTRACT_16BITS(msg_data),
 533                    name_entries, (name_entries_valid == 0) ? " (invalid)" : ""));
 534
 535             if (name_entries_valid == 0)
 536                 break;
 537
 538             msg_data += 4;
 539             msg_tlen -= 4;
 540
 541             for (i = 0; i < name_entries; i++) {
 542                 int name_entry_len_valid = 0;
 543
 544                 if (msg_tlen < 4)
 545                     break;
 546                 ND_TCHECK2(*msg_data, 4);
 547
 548                 name_entry_type = EXTRACT_16BITS(msg_data);
 549                 name_entry_len = EXTRACT_16BITS(msg_data+2);
 550
 551                 msg_data += 4;
 552                 msg_tlen -= 4;
 553
 554                 if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
 555                     name_entry_len_valid = 1;
 556
 557                 ND_PRINT((ndo, "\n\t    #%u: type %#06x, length %u%s",
 558                         (unsigned int) i, name_entry_type,
 559                         name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : ""));
 560
 561                 if (name_entry_len_valid == 0)
 562                     break;
 563
 564                 /* 32-bit alignment */
 565                 name_entry_padding = 0;
 566                 if (name_entry_len%4 != 0)
 567                     name_entry_padding = 4-(name_entry_len%4);
 568
 569                 if (msg_tlen < addr_size + name_entry_len + name_entry_padding)
 570                     goto trunc;
 571
 572                 ND_TCHECK2(*msg_data, addr_size + name_entry_len + name_entry_padding);
 573
 574 #if INET6
 575                 if (is_ipv6)
 576                     ND_PRINT((ndo, ", address %s, name \"",
 577                             ip6addr_string(ndo, msg_data)));
 578                 else
 579 #endif
 580                     ND_PRINT((ndo, ", address %s, name \"",
 581                             ipaddr_string(ndo, msg_data)));
 582                 fn_printn(ndo, msg_data + addr_size, name_entry_len, NULL);
 583                 ND_PRINT((ndo, "\""));
 584
 585                 msg_data += addr_size + name_entry_len + name_entry_padding;
 586                 msg_tlen -= addr_size + name_entry_len + name_entry_padding;
 587             } /* for (i = 0; i < name_entries; i++) */
 588             break;
 589         } /* case OLSR_NAMESERVICE_MSG */
 590
 591             /*
 592              * FIXME those are the defined messages that lack a decoder
 593              * you are welcome to contribute code ;-)
 594              */
 595         case OLSR_POWERINFO_MSG:
 596         default:
 597             print_unknown_data(ndo, msg_data, "\n\t    ", msg_tlen);
 598             break;
 599         } /* switch (msg_type) */
 600         tptr += msg_len;
 601     } /* while (tptr < (pptr+length)) */
 602
 603     return;
 604
 605  trunc:
 606     ND_PRINT((ndo, "[|olsr]"));
 607 }
 608
 609 /*
 610  * Local Variables:
 611  * c-style: whitesmith
 612  * c-basic-offset: 4
 613  * End:
 614  */