contrib/tcpdump/print-pim.c

   1 /*
   2  * Copyright (c) 1995, 1996
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that: (1) source code distributions
   7  * retain the above copyright notice and this paragraph in its entirety, (2)
   8  * distributions including binary code include the above copyright notice and
   9  * this paragraph in its entirety in the documentation or other materials
  10  * provided with the distribution, and (3) all advertising materials mentioning
  11  * features or use of this software display the following acknowledgement:
  12  * ``This product includes software developed by the University of California,
  13  * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
  14  * the University nor the names of its contributors may be used to endorse
  15  * or promote products derived from this software without specific prior
  16  * written permission.
  17  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
  18  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
  19  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  20  *
  21  * $FreeBSD$
  22  */
  23
  24 #define NETDISSECT_REWORKED
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include <tcpdump-stdinc.h>
  30
  31 #include "interface.h"
  32 #include "addrtoname.h"
  33 #include "extract.h"
  34
  35 #include "ip.h"
  36
  37 #define PIMV1_TYPE_QUERY           0
  38 #define PIMV1_TYPE_REGISTER        1
  39 #define PIMV1_TYPE_REGISTER_STOP   2
  40 #define PIMV1_TYPE_JOIN_PRUNE      3
  41 #define PIMV1_TYPE_RP_REACHABILITY 4
  42 #define PIMV1_TYPE_ASSERT          5
  43 #define PIMV1_TYPE_GRAFT           6
  44 #define PIMV1_TYPE_GRAFT_ACK       7
  45
  46 static const struct tok pimv1_type_str[] = {
  47         { PIMV1_TYPE_QUERY,           "Query"         },
  48         { PIMV1_TYPE_REGISTER,        "Register"      },
  49         { PIMV1_TYPE_REGISTER_STOP,   "Register-Stop" },
  50         { PIMV1_TYPE_JOIN_PRUNE,      "Join/Prune"    },
  51         { PIMV1_TYPE_RP_REACHABILITY, "RP-reachable"  },
  52         { PIMV1_TYPE_ASSERT,          "Assert"        },
  53         { PIMV1_TYPE_GRAFT,           "Graft"         },
  54         { PIMV1_TYPE_GRAFT_ACK,       "Graft-ACK"     },
  55         { 0, NULL }
  56 };
  57
  58 #define PIMV2_TYPE_HELLO         0
  59 #define PIMV2_TYPE_REGISTER      1
  60 #define PIMV2_TYPE_REGISTER_STOP 2
  61 #define PIMV2_TYPE_JOIN_PRUNE    3
  62 #define PIMV2_TYPE_BOOTSTRAP     4
  63 #define PIMV2_TYPE_ASSERT        5
  64 #define PIMV2_TYPE_GRAFT         6
  65 #define PIMV2_TYPE_GRAFT_ACK     7
  66 #define PIMV2_TYPE_CANDIDATE_RP  8
  67 #define PIMV2_TYPE_PRUNE_REFRESH 9
  68 #define PIMV2_TYPE_DF_ELECTION   10
  69 #define PIMV2_TYPE_ECMP_REDIRECT 11
  70
  71 static const struct tok pimv2_type_values[] = {
  72     { PIMV2_TYPE_HELLO,         "Hello" },
  73     { PIMV2_TYPE_REGISTER,      "Register" },
  74     { PIMV2_TYPE_REGISTER_STOP, "Register Stop" },
  75     { PIMV2_TYPE_JOIN_PRUNE,    "Join / Prune" },
  76     { PIMV2_TYPE_BOOTSTRAP,     "Bootstrap" },
  77     { PIMV2_TYPE_ASSERT,        "Assert" },
  78     { PIMV2_TYPE_GRAFT,         "Graft" },
  79     { PIMV2_TYPE_GRAFT_ACK,     "Graft Acknowledgement" },
  80     { PIMV2_TYPE_CANDIDATE_RP,  "Candidate RP Advertisement" },
  81     { PIMV2_TYPE_PRUNE_REFRESH, "Prune Refresh" },
  82     { PIMV2_TYPE_DF_ELECTION,   "DF Election" },
  83     { PIMV2_TYPE_ECMP_REDIRECT, "ECMP Redirect" },
  84     { 0, NULL}
  85 };
  86
  87 #define PIMV2_HELLO_OPTION_HOLDTIME             1
  88 #define PIMV2_HELLO_OPTION_LANPRUNEDELAY        2
  89 #define PIMV2_HELLO_OPTION_DR_PRIORITY_OLD     18
  90 #define PIMV2_HELLO_OPTION_DR_PRIORITY         19
  91 #define PIMV2_HELLO_OPTION_GENID               20
  92 #define PIMV2_HELLO_OPTION_REFRESH_CAP         21
  93 #define PIMV2_HELLO_OPTION_BIDIR_CAP           22
  94 #define PIMV2_HELLO_OPTION_ADDRESS_LIST        24
  95 #define PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD 65001
  96
  97 static const struct tok pimv2_hello_option_values[] = {
  98     { PIMV2_HELLO_OPTION_HOLDTIME,         "Hold Time" },
  99     { PIMV2_HELLO_OPTION_LANPRUNEDELAY,    "LAN Prune Delay" },
 100     { PIMV2_HELLO_OPTION_DR_PRIORITY_OLD,  "DR Priority (Old)" },
 101     { PIMV2_HELLO_OPTION_DR_PRIORITY,      "DR Priority" },
 102     { PIMV2_HELLO_OPTION_GENID,            "Generation ID" },
 103     { PIMV2_HELLO_OPTION_REFRESH_CAP,      "State Refresh Capability" },
 104     { PIMV2_HELLO_OPTION_BIDIR_CAP,        "Bi-Directional Capability" },
 105     { PIMV2_HELLO_OPTION_ADDRESS_LIST,     "Address List" },
 106     { PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD, "Address List (Old)" },
 107     { 0, NULL}
 108 };
 109
 110 #define PIMV2_REGISTER_FLAG_LEN      4
 111 #define PIMV2_REGISTER_FLAG_BORDER 0x80000000
 112 #define PIMV2_REGISTER_FLAG_NULL   0x40000000
 113
 114 static const struct tok pimv2_register_flag_values[] = {
 115     { PIMV2_REGISTER_FLAG_BORDER, "Border" },
 116     { PIMV2_REGISTER_FLAG_NULL, "Null" },
 117     { 0, NULL}
 118 };
 119
 120 /*
 121  * XXX: We consider a case where IPv6 is not ready yet for portability,
 122  * but PIM dependent defintions should be independent of IPv6...
 123  */
 124
 125 struct pim {
 126         uint8_t pim_typever;
 127                         /* upper 4bit: PIM version number; 2 for PIMv2 */
 128                         /* lower 4bit: the PIM message type, currently they are:
 129                          * Hello, Register, Register-Stop, Join/Prune,
 130                          * Bootstrap, Assert, Graft (PIM-DM only),
 131                          * Graft-Ack (PIM-DM only), C-RP-Adv
 132                          */
 133 #define PIM_VER(x)      (((x) & 0xf0) >> 4)
 134 #define PIM_TYPE(x)     ((x) & 0x0f)
 135         u_char  pim_rsv;        /* Reserved */
 136         u_short pim_cksum;      /* IP style check sum */
 137 };
 138
 139 static void pimv2_print(netdissect_options *, register const u_char *bp, register u_int len, u_int cksum);
 140
 141 static void
 142 pimv1_join_prune_print(netdissect_options *ndo,
 143                        register const u_char *bp, register u_int len)
 144 {
 145         int ngroups, njoin, nprune;
 146         int njp;
 147
 148         /* If it's a single group and a single source, use 1-line output. */
 149         if (ND_TTEST2(bp[0], 30) && bp[11] == 1 &&
 150             ((njoin = EXTRACT_16BITS(&bp[20])) + EXTRACT_16BITS(&bp[22])) == 1) {
 151                 int hold;
 152
 153                 ND_PRINT((ndo, " RPF %s ", ipaddr_string(ndo, bp)));
 154                 hold = EXTRACT_16BITS(&bp[6]);
 155                 if (hold != 180) {
 156                         ND_PRINT((ndo, "Hold "));
 157                         relts_print(ndo, hold);
 158                 }
 159                 ND_PRINT((ndo, "%s (%s/%d, %s", njoin ? "Join" : "Prune",
 160                 ipaddr_string(ndo, &bp[26]), bp[25] & 0x3f,
 161                 ipaddr_string(ndo, &bp[12])));
 162                 if (EXTRACT_32BITS(&bp[16]) != 0xffffffff)
 163                         ND_PRINT((ndo, "/%s", ipaddr_string(ndo, &bp[16])));
 164                 ND_PRINT((ndo, ") %s%s %s",
 165                     (bp[24] & 0x01) ? "Sparse" : "Dense",
 166                     (bp[25] & 0x80) ? " WC" : "",
 167                     (bp[25] & 0x40) ? "RP" : "SPT"));
 168                 return;
 169         }
 170
 171         ND_TCHECK2(bp[0], sizeof(struct in_addr));
 172         if (ndo->ndo_vflag > 1)
 173                 ND_PRINT((ndo, "\n"));
 174         ND_PRINT((ndo, " Upstream Nbr: %s", ipaddr_string(ndo, bp)));
 175         ND_TCHECK2(bp[6], 2);
 176         if (ndo->ndo_vflag > 1)
 177                 ND_PRINT((ndo, "\n"));
 178         ND_PRINT((ndo, " Hold time: "));
 179         relts_print(ndo, EXTRACT_16BITS(&bp[6]));
 180         if (ndo->ndo_vflag < 2)
 181                 return;
 182         bp += 8;
 183         len -= 8;
 184
 185         ND_TCHECK2(bp[0], 4);
 186         ngroups = bp[3];
 187         bp += 4;
 188         len -= 4;
 189         while (ngroups--) {
 190                 /*
 191                  * XXX - does the address have length "addrlen" and the
 192                  * mask length "maddrlen"?
 193                  */
 194                 ND_TCHECK2(bp[0], sizeof(struct in_addr));
 195                 ND_PRINT((ndo, "\n\tGroup: %s", ipaddr_string(ndo, bp)));
 196                 ND_TCHECK2(bp[4], sizeof(struct in_addr));
 197                 if (EXTRACT_32BITS(&bp[4]) != 0xffffffff)
 198                         ND_PRINT((ndo, "/%s", ipaddr_string(ndo, &bp[4])));
 199                 ND_TCHECK2(bp[8], 4);
 200                 njoin = EXTRACT_16BITS(&bp[8]);
 201                 nprune = EXTRACT_16BITS(&bp[10]);
 202                 ND_PRINT((ndo, " joined: %d pruned: %d", njoin, nprune));
 203                 bp += 12;
 204                 len -= 12;
 205                 for (njp = 0; njp < (njoin + nprune); njp++) {
 206                         const char *type;
 207
 208                         if (njp < njoin)
 209                                 type = "Join ";
 210                         else
 211                                 type = "Prune";
 212                         ND_TCHECK2(bp[0], 6);
 213                         ND_PRINT((ndo, "\n\t%s %s%s%s%s/%d", type,
 214                             (bp[0] & 0x01) ? "Sparse " : "Dense ",
 215                             (bp[1] & 0x80) ? "WC " : "",
 216                             (bp[1] & 0x40) ? "RP " : "SPT ",
 217                         ipaddr_string(ndo, &bp[2]), bp[1] & 0x3f));
 218                         bp += 6;
 219                         len -= 6;
 220                 }
 221         }
 222         return;
 223 trunc:
 224         ND_PRINT((ndo, "[|pim]"));
 225         return;
 226 }
 227
 228 void
 229 pimv1_print(netdissect_options *ndo,
 230             register const u_char *bp, register u_int len)
 231 {
 232         register const u_char *ep;
 233         register u_char type;
 234
 235         ep = (const u_char *)ndo->ndo_snapend;
 236         if (bp >= ep)
 237                 return;
 238
 239         ND_TCHECK(bp[1]);
 240         type = bp[1];
 241
 242         ND_PRINT((ndo, " %s", tok2str(pimv1_type_str, "[type %u]", type)));
 243         switch (type) {
 244         case PIMV1_TYPE_QUERY:
 245                 if (ND_TTEST(bp[8])) {
 246                         switch (bp[8] >> 4) {
 247                         case 0:
 248                                 ND_PRINT((ndo, " Dense-mode"));
 249                                 break;
 250                         case 1:
 251                                 ND_PRINT((ndo, " Sparse-mode"));
 252                                 break;
 253                         case 2:
 254                                 ND_PRINT((ndo, " Sparse-Dense-mode"));
 255                                 break;
 256                         default:
 257                                 ND_PRINT((ndo, " mode-%d", bp[8] >> 4));
 258                                 break;
 259                         }
 260                 }
 261                 if (ndo->ndo_vflag) {
 262                         ND_TCHECK2(bp[10],2);
 263                         ND_PRINT((ndo, " (Hold-time "));
 264                         relts_print(ndo, EXTRACT_16BITS(&bp[10]));
 265                         ND_PRINT((ndo, ")"));
 266                 }
 267                 break;
 268
 269         case PIMV1_TYPE_REGISTER:
 270                 ND_TCHECK2(bp[8], 20);                  /* ip header */
 271                 ND_PRINT((ndo, " for %s > %s", ipaddr_string(ndo, &bp[20]),
 272                     ipaddr_string(ndo, &bp[24])));
 273                 break;
 274         case PIMV1_TYPE_REGISTER_STOP:
 275                 ND_TCHECK2(bp[12], sizeof(struct in_addr));
 276                 ND_PRINT((ndo, " for %s > %s", ipaddr_string(ndo, &bp[8]),
 277                     ipaddr_string(ndo, &bp[12])));
 278                 break;
 279         case PIMV1_TYPE_RP_REACHABILITY:
 280                 if (ndo->ndo_vflag) {
 281                         ND_TCHECK2(bp[22], 2);
 282                         ND_PRINT((ndo, " group %s", ipaddr_string(ndo, &bp[8])));
 283                         if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
 284                                 ND_PRINT((ndo, "/%s", ipaddr_string(ndo, &bp[12])));
 285                         ND_PRINT((ndo, " RP %s hold ", ipaddr_string(ndo, &bp[16])));
 286                         relts_print(ndo, EXTRACT_16BITS(&bp[22]));
 287                 }
 288                 break;
 289         case PIMV1_TYPE_ASSERT:
 290                 ND_TCHECK2(bp[16], sizeof(struct in_addr));
 291                 ND_PRINT((ndo, " for %s > %s", ipaddr_string(ndo, &bp[16]),
 292                     ipaddr_string(ndo, &bp[8])));
 293                 if (EXTRACT_32BITS(&bp[12]) != 0xffffffff)
 294                         ND_PRINT((ndo, "/%s", ipaddr_string(ndo, &bp[12])));
 295                 ND_TCHECK2(bp[24], 4);
 296                 ND_PRINT((ndo, " %s pref %d metric %d",
 297                     (bp[20] & 0x80) ? "RP-tree" : "SPT",
 298                 EXTRACT_32BITS(&bp[20]) & 0x7fffffff,
 299                 EXTRACT_32BITS(&bp[24])));
 300                 break;
 301         case PIMV1_TYPE_JOIN_PRUNE:
 302         case PIMV1_TYPE_GRAFT:
 303         case PIMV1_TYPE_GRAFT_ACK:
 304                 if (ndo->ndo_vflag)
 305                         pimv1_join_prune_print(ndo, &bp[8], len - 8);
 306                 break;
 307         }
 308         if ((bp[4] >> 4) != 1)
 309                 ND_PRINT((ndo, " [v%d]", bp[4] >> 4));
 310         return;
 311
 312 trunc:
 313         ND_PRINT((ndo, "[|pim]"));
 314         return;
 315 }
 316
 317 /*
 318  * auto-RP is a cisco protocol, documented at
 319  * ftp://ftpeng.cisco.com/ipmulticast/specs/pim-autorp-spec01.txt
 320  *
 321  * This implements version 1+, dated Sept 9, 1998.
 322  */
 323 void
 324 cisco_autorp_print(netdissect_options *ndo,
 325                    register const u_char *bp, register u_int len)
 326 {
 327         int type;
 328         int numrps;
 329         int hold;
 330
 331         ND_TCHECK(bp[0]);
 332         ND_PRINT((ndo, " auto-rp "));
 333         type = bp[0];
 334         switch (type) {
 335         case 0x11:
 336                 ND_PRINT((ndo, "candidate-advert"));
 337                 break;
 338         case 0x12:
 339                 ND_PRINT((ndo, "mapping"));
 340                 break;
 341         default:
 342                 ND_PRINT((ndo, "type-0x%02x", type));
 343                 break;
 344         }
 345
 346         ND_TCHECK(bp[1]);
 347         numrps = bp[1];
 348
 349         ND_TCHECK2(bp[2], 2);
 350         ND_PRINT((ndo, " Hold "));
 351         hold = EXTRACT_16BITS(&bp[2]);
 352         if (hold)
 353                 relts_print(ndo, EXTRACT_16BITS(&bp[2]));
 354         else
 355                 ND_PRINT((ndo, "FOREVER"));
 356
 357         /* Next 4 bytes are reserved. */
 358
 359         bp += 8; len -= 8;
 360
 361         /*XXX skip unless -v? */
 362
 363         /*
 364          * Rest of packet:
 365          * numrps entries of the form:
 366          * 32 bits: RP
 367          * 6 bits: reserved
 368          * 2 bits: PIM version supported, bit 0 is "supports v1", 1 is "v2".
 369          * 8 bits: # of entries for this RP
 370          * each entry: 7 bits: reserved, 1 bit: negative,
 371          *             8 bits: mask 32 bits: source
 372          * lather, rinse, repeat.
 373          */
 374         while (numrps--) {
 375                 int nentries;
 376                 char s;
 377
 378                 ND_TCHECK2(bp[0], 4);
 379                 ND_PRINT((ndo, " RP %s", ipaddr_string(ndo, bp)));
 380                 ND_TCHECK(bp[4]);
 381                 switch (bp[4] & 0x3) {
 382                 case 0: ND_PRINT((ndo, " PIMv?"));
 383                         break;
 384                 case 1: ND_PRINT((ndo, " PIMv1"));
 385                         break;
 386                 case 2: ND_PRINT((ndo, " PIMv2"));
 387                         break;
 388                 case 3: ND_PRINT((ndo, " PIMv1+2"));
 389                         break;
 390                 }
 391                 if (bp[4] & 0xfc)
 392                         ND_PRINT((ndo, " [rsvd=0x%02x]", bp[4] & 0xfc));
 393                 ND_TCHECK(bp[5]);
 394                 nentries = bp[5];
 395                 bp += 6; len -= 6;
 396                 s = ' ';
 397                 for (; nentries; nentries--) {
 398                         ND_TCHECK2(bp[0], 6);
 399                         ND_PRINT((ndo, "%c%s%s/%d", s, bp[0] & 1 ? "!" : "",
 400                                   ipaddr_string(ndo, &bp[2]), bp[1]));
 401                         if (bp[0] & 0x02) {
 402                                 ND_PRINT((ndo, " bidir"));
 403                         }
 404                         if (bp[0] & 0xfc) {
 405                                 ND_PRINT((ndo, "[rsvd=0x%02x]", bp[0] & 0xfc));
 406                         }
 407                         s = ',';
 408                         bp += 6; len -= 6;
 409                 }
 410         }
 411         return;
 412
 413 trunc:
 414         ND_PRINT((ndo, "[|autorp]"));
 415         return;
 416 }
 417
 418 void
 419 pim_print(netdissect_options *ndo,
 420           register const u_char *bp, register u_int len, u_int cksum)
 421 {
 422         register const u_char *ep;
 423         register struct pim *pim = (struct pim *)bp;
 424
 425         ep = (const u_char *)ndo->ndo_snapend;
 426         if (bp >= ep)
 427                 return;
 428 #ifdef notyet                   /* currently we see only version and type */
 429         ND_TCHECK(pim->pim_rsv);
 430 #endif
 431
 432         switch (PIM_VER(pim->pim_typever)) {
 433         case 2:
 434                 if (!ndo->ndo_vflag) {
 435                         ND_PRINT((ndo, "PIMv%u, %s, length %u",
 436                                   PIM_VER(pim->pim_typever),
 437                                   tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever)),
 438                                   len));
 439                         return;
 440                 } else {
 441                         ND_PRINT((ndo, "PIMv%u, length %u\n\t%s",
 442                                   PIM_VER(pim->pim_typever),
 443                                   len,
 444                                   tok2str(pimv2_type_values,"Unknown Type",PIM_TYPE(pim->pim_typever))));
 445                         pimv2_print(ndo, bp, len, cksum);
 446                 }
 447                 break;
 448         default:
 449                 ND_PRINT((ndo, "PIMv%u, length %u",
 450                           PIM_VER(pim->pim_typever),
 451                           len));
 452                 break;
 453         }
 454         return;
 455 }
 456
 457 /*
 458  * PIMv2 uses encoded address representations.
 459  *
 460  * The last PIM-SM I-D before RFC2117 was published specified the
 461  * following representation for unicast addresses.  However, RFC2117
 462  * specified no encoding for unicast addresses with the unicast
 463  * address length specified in the header.  Therefore, we have to
 464  * guess which encoding is being used (Cisco's PIMv2 implementation
 465  * uses the non-RFC encoding).  RFC2117 turns a previously "Reserved"
 466  * field into a 'unicast-address-length-in-bytes' field.  We guess
 467  * that it's the draft encoding if this reserved field is zero.
 468  *
 469  * RFC2362 goes back to the encoded format, and calls the addr length
 470  * field "reserved" again.
 471  *
 472  * The first byte is the address family, from:
 473  *
 474  *    0    Reserved
 475  *    1    IP (IP version 4)
 476  *    2    IP6 (IP version 6)
 477  *    3    NSAP
 478  *    4    HDLC (8-bit multidrop)
 479  *    5    BBN 1822
 480  *    6    802 (includes all 802 media plus Ethernet "canonical format")
 481  *    7    E.163
 482  *    8    E.164 (SMDS, Frame Relay, ATM)
 483  *    9    F.69 (Telex)
 484  *   10    X.121 (X.25, Frame Relay)
 485  *   11    IPX
 486  *   12    Appletalk
 487  *   13    Decnet IV
 488  *   14    Banyan Vines
 489  *   15    E.164 with NSAP format subaddress
 490  *
 491  * In addition, the second byte is an "Encoding".  0 is the default
 492  * encoding for the address family, and no other encodings are currently
 493  * specified.
 494  *
 495  */
 496
 497 static int pimv2_addr_len;
 498
 499 enum pimv2_addrtype {
 500         pimv2_unicast, pimv2_group, pimv2_source
 501 };
 502
 503 /*  0                   1                   2                   3
 504  *  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
 505  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 506  * | Addr Family   | Encoding Type |     Unicast Address           |
 507  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+++++++
 508  *  0                   1                   2                   3
 509  *  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
 510  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 511  * | Addr Family   | Encoding Type |   Reserved    |  Mask Len     |
 512  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 513  * |                Group multicast Address                        |
 514  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 515  *  0                   1                   2                   3
 516  *  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
 517  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 518  * | Addr Family   | Encoding Type | Rsrvd   |S|W|R|  Mask Len     |
 519  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 520  * |                        Source Address                         |
 521  * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 522  */
 523 static int
 524 pimv2_addr_print(netdissect_options *ndo,
 525                  const u_char *bp, enum pimv2_addrtype at, int silent)
 526 {
 527         int af;
 528         int len, hdrlen;
 529
 530         ND_TCHECK(bp[0]);
 531
 532         if (pimv2_addr_len == 0) {
 533                 ND_TCHECK(bp[1]);
 534                 switch (bp[0]) {
 535                 case 1:
 536                         af = AF_INET;
 537                         len = sizeof(struct in_addr);
 538                         break;
 539 #ifdef INET6
 540                 case 2:
 541                         af = AF_INET6;
 542                         len = sizeof(struct in6_addr);
 543                         break;
 544 #endif
 545                 default:
 546                         return -1;
 547                 }
 548                 if (bp[1] != 0)
 549                         return -1;
 550                 hdrlen = 2;
 551         } else {
 552                 switch (pimv2_addr_len) {
 553                 case sizeof(struct in_addr):
 554                         af = AF_INET;
 555                         break;
 556 #ifdef INET6
 557                 case sizeof(struct in6_addr):
 558                         af = AF_INET6;
 559                         break;
 560 #endif
 561                 default:
 562                         return -1;
 563                         break;
 564                 }
 565                 len = pimv2_addr_len;
 566                 hdrlen = 0;
 567         }
 568
 569         bp += hdrlen;
 570         switch (at) {
 571         case pimv2_unicast:
 572                 ND_TCHECK2(bp[0], len);
 573                 if (af == AF_INET) {
 574                         if (!silent)
 575                                 ND_PRINT((ndo, "%s", ipaddr_string(ndo, bp)));
 576                 }
 577 #ifdef INET6
 578                 else if (af == AF_INET6) {
 579                         if (!silent)
 580                                 ND_PRINT((ndo, "%s", ip6addr_string(ndo, bp)));
 581                 }
 582 #endif
 583                 return hdrlen + len;
 584         case pimv2_group:
 585         case pimv2_source:
 586                 ND_TCHECK2(bp[0], len + 2);
 587                 if (af == AF_INET) {
 588                         if (!silent) {
 589                                 ND_PRINT((ndo, "%s", ipaddr_string(ndo, bp + 2)));
 590                                 if (bp[1] != 32)
 591                                         ND_PRINT((ndo, "/%u", bp[1]));
 592                         }
 593                 }
 594 #ifdef INET6
 595                 else if (af == AF_INET6) {
 596                         if (!silent) {
 597                                 ND_PRINT((ndo, "%s", ip6addr_string(ndo, bp + 2)));
 598                                 if (bp[1] != 128)
 599                                         ND_PRINT((ndo, "/%u", bp[1]));
 600                         }
 601                 }
 602 #endif
 603                 if (bp[0] && !silent) {
 604                         if (at == pimv2_group) {
 605                                 ND_PRINT((ndo, "(0x%02x)", bp[0]));
 606                         } else {
 607                                 ND_PRINT((ndo, "(%s%s%s",
 608                                         bp[0] & 0x04 ? "S" : "",
 609                                         bp[0] & 0x02 ? "W" : "",
 610                                         bp[0] & 0x01 ? "R" : ""));
 611                                 if (bp[0] & 0xf8) {
 612                                         ND_PRINT((ndo, "+0x%02x", bp[0] & 0xf8));
 613                                 }
 614                                 ND_PRINT((ndo, ")"));
 615                         }
 616                 }
 617                 return hdrlen + 2 + len;
 618         default:
 619                 return -1;
 620         }
 621 trunc:
 622         return -1;
 623 }
 624
 625 static void
 626 pimv2_print(netdissect_options *ndo,
 627             register const u_char *bp, register u_int len, u_int cksum)
 628 {
 629         register const u_char *ep;
 630         register struct pim *pim = (struct pim *)bp;
 631         int advance;
 632
 633         ep = (const u_char *)ndo->ndo_snapend;
 634         if (bp >= ep)
 635                 return;
 636         if (ep > bp + len)
 637                 ep = bp + len;
 638         ND_TCHECK(pim->pim_rsv);
 639         pimv2_addr_len = pim->pim_rsv;
 640         if (pimv2_addr_len != 0)
 641                 ND_PRINT((ndo, ", RFC2117-encoding"));
 642
 643         ND_PRINT((ndo, ", cksum 0x%04x ", EXTRACT_16BITS(&pim->pim_cksum)));
 644         if (EXTRACT_16BITS(&pim->pim_cksum) == 0) {
 645                 ND_PRINT((ndo, "(unverified)"));
 646         } else {
 647                 ND_PRINT((ndo, "(%scorrect)", ND_TTEST2(bp[0], len) && cksum ? "in" : "" ));
 648         }
 649
 650         switch (PIM_TYPE(pim->pim_typever)) {
 651         case PIMV2_TYPE_HELLO:
 652             {
 653                 uint16_t otype, olen;
 654                 bp += 4;
 655                 while (bp < ep) {
 656                         ND_TCHECK2(bp[0], 4);
 657                         otype = EXTRACT_16BITS(&bp[0]);
 658                         olen = EXTRACT_16BITS(&bp[2]);
 659                         ND_TCHECK2(bp[0], 4 + olen);
 660                         ND_PRINT((ndo, "\n\t  %s Option (%u), length %u, Value: ",
 661                                   tok2str(pimv2_hello_option_values, "Unknown", otype),
 662                                   otype,
 663                                   olen));
 664                         bp += 4;
 665
 666                         switch (otype) {
 667                         case PIMV2_HELLO_OPTION_HOLDTIME:
 668                                 relts_print(ndo, EXTRACT_16BITS(bp));
 669                                 break;
 670
 671                         case PIMV2_HELLO_OPTION_LANPRUNEDELAY:
 672                                 if (olen != 4) {
 673                                         ND_PRINT((ndo, "ERROR: Option Length != 4 Bytes (%u)", olen));
 674                                 } else {
 675                                         char t_bit;
 676                                         uint16_t lan_delay, override_interval;
 677                                         lan_delay = EXTRACT_16BITS(bp);
 678                                         override_interval = EXTRACT_16BITS(bp+2);
 679                                         t_bit = (lan_delay & 0x8000)? 1 : 0;
 680                                         lan_delay &= ~0x8000;
 681                                         ND_PRINT((ndo, "\n\t    T-bit=%d, LAN delay %dms, Override interval %dms",
 682                                         t_bit, lan_delay, override_interval));
 683                                 }
 684                                 break;
 685
 686                         case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD:
 687                         case PIMV2_HELLO_OPTION_DR_PRIORITY:
 688                                 switch (olen) {
 689                                 case 0:
 690                                         ND_PRINT((ndo, "Bi-Directional Capability (Old)"));
 691                                         break;
 692                                 case 4:
 693                                         ND_PRINT((ndo, "%u", EXTRACT_32BITS(bp)));
 694                                         break;
 695                                 default:
 696                                         ND_PRINT((ndo, "ERROR: Option Length != 4 Bytes (%u)", olen));
 697                                         break;
 698                                 }
 699                                 break;
 700
 701                         case PIMV2_HELLO_OPTION_GENID:
 702                                 ND_PRINT((ndo, "0x%08x", EXTRACT_32BITS(bp)));
 703                                 break;
 704
 705                         case PIMV2_HELLO_OPTION_REFRESH_CAP:
 706                                 ND_PRINT((ndo, "v%d", *bp));
 707                                 if (*(bp+1) != 0) {
 708                                         ND_PRINT((ndo, ", interval "));
 709                                         relts_print(ndo, *(bp+1));
 710                                 }
 711                                 if (EXTRACT_16BITS(bp+2) != 0) {
 712                                         ND_PRINT((ndo, " ?0x%04x?", EXTRACT_16BITS(bp+2)));
 713                                 }
 714                                 break;
 715
 716                         case  PIMV2_HELLO_OPTION_BIDIR_CAP:
 717                                 break;
 718
 719                         case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD:
 720                         case PIMV2_HELLO_OPTION_ADDRESS_LIST:
 721                                 if (ndo->ndo_vflag > 1) {
 722                                         const u_char *ptr = bp;
 723                                         while (ptr < (bp+olen)) {
 724                                                 int advance;
 725
 726                                                 ND_PRINT((ndo, "\n\t    "));
 727                                                 advance = pimv2_addr_print(ndo, ptr, pimv2_unicast, 0);
 728                                                 if (advance < 0) {
 729                                                         ND_PRINT((ndo, "..."));
 730                                                         break;
 731                                                 }
 732                                                 ptr += advance;
 733                                         }
 734                                 }
 735                                 break;
 736                         default:
 737                                 if (ndo->ndo_vflag <= 1)
 738                                         print_unknown_data(ndo, bp, "\n\t    ", olen);
 739                                 break;
 740                         }
 741                         /* do we want to see an additionally hexdump ? */
 742                         if (ndo->ndo_vflag> 1)
 743                                 print_unknown_data(ndo, bp, "\n\t    ", olen);
 744                         bp += olen;
 745                 }
 746                 break;
 747             }
 748
 749         case PIMV2_TYPE_REGISTER:
 750         {
 751                 struct ip *ip;
 752
 753                 ND_TCHECK2(*(bp + 4), PIMV2_REGISTER_FLAG_LEN);
 754
 755                 ND_PRINT((ndo, ", Flags [ %s ]\n\t",
 756                           tok2str(pimv2_register_flag_values,
 757                           "none",
 758                           EXTRACT_32BITS(bp+4))));
 759
 760                 bp += 8; len -= 8;
 761                 /* encapsulated multicast packet */
 762                 ip = (struct ip *)bp;
 763                 switch (IP_V(ip)) {
 764                 case 0: /* Null header */
 765                         ND_PRINT((ndo, "IP-Null-header %s > %s",
 766                                   ipaddr_string(ndo, &ip->ip_src),
 767                                   ipaddr_string(ndo, &ip->ip_dst)));
 768                         break;
 769
 770                 case 4: /* IPv4 */
 771                         ip_print(ndo, bp, len);
 772                         break;
 773
 774                 case 6: /* IPv6 */
 775                         ip6_print(ndo, bp, len);
 776                         break;
 777
 778                 default:
 779                         ND_PRINT((ndo, "IP ver %d", IP_V(ip)));
 780                         break;
 781                 }
 782                 break;
 783         }
 784
 785         case PIMV2_TYPE_REGISTER_STOP:
 786                 bp += 4; len -= 4;
 787                 if (bp >= ep)
 788                         break;
 789                 ND_PRINT((ndo, " group="));
 790                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_group, 0)) < 0) {
 791                         ND_PRINT((ndo, "..."));
 792                         break;
 793                 }
 794                 bp += advance; len -= advance;
 795                 if (bp >= ep)
 796                         break;
 797                 ND_PRINT((ndo, " source="));
 798                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
 799                         ND_PRINT((ndo, "..."));
 800                         break;
 801                 }
 802                 bp += advance; len -= advance;
 803                 break;
 804
 805         case PIMV2_TYPE_JOIN_PRUNE:
 806         case PIMV2_TYPE_GRAFT:
 807         case PIMV2_TYPE_GRAFT_ACK:
 808
 809
 810         /*
 811          * 0                   1                   2                   3
 812          *   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
 813          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 814          *  |PIM Ver| Type  | Addr length   |           Checksum            |
 815          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 816          *  |             Unicast-Upstream Neighbor Address                 |
 817          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 818          *  |  Reserved     | Num groups    |          Holdtime             |
 819          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 820          *  |            Encoded-Multicast Group Address-1                  |
 821          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 822          *  |   Number of Joined  Sources   |   Number of Pruned Sources    |
 823          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 824          *  |               Encoded-Joined Source Address-1                 |
 825          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 826          *  |                             .                                 |
 827          *  |                             .                                 |
 828          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 829          *  |               Encoded-Joined Source Address-n                 |
 830          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 831          *  |               Encoded-Pruned Source Address-1                 |
 832          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 833          *  |                             .                                 |
 834          *  |                             .                                 |
 835          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 836          *  |               Encoded-Pruned Source Address-n                 |
 837          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 838          *  |                           .                                   |
 839          *  |                           .                                   |
 840          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 841          *  |                Encoded-Multicast Group Address-n              |
 842          *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 843          */
 844
 845             {
 846                 uint8_t ngroup;
 847                 uint16_t holdtime;
 848                 uint16_t njoin;
 849                 uint16_t nprune;
 850                 int i, j;
 851
 852                 bp += 4; len -= 4;
 853                 if (PIM_TYPE(pim->pim_typever) != 7) {  /*not for Graft-ACK*/
 854                         if (bp >= ep)
 855                                 break;
 856                         ND_PRINT((ndo, ", upstream-neighbor: "));
 857                         if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
 858                                 ND_PRINT((ndo, "..."));
 859                                 break;
 860                         }
 861                         bp += advance; len -= advance;
 862                 }
 863                 if (bp + 4 > ep)
 864                         break;
 865                 ngroup = bp[1];
 866                 holdtime = EXTRACT_16BITS(&bp[2]);
 867                 ND_PRINT((ndo, "\n\t  %u group(s)", ngroup));
 868                 if (PIM_TYPE(pim->pim_typever) != 7) {  /*not for Graft-ACK*/
 869                         ND_PRINT((ndo, ", holdtime: "));
 870                         if (holdtime == 0xffff)
 871                                 ND_PRINT((ndo, "infinite"));
 872                         else
 873                                 relts_print(ndo, holdtime);
 874                 }
 875                 bp += 4; len -= 4;
 876                 for (i = 0; i < ngroup; i++) {
 877                         if (bp >= ep)
 878                                 goto jp_done;
 879                         ND_PRINT((ndo, "\n\t    group #%u: ", i+1));
 880                         if ((advance = pimv2_addr_print(ndo, bp, pimv2_group, 0)) < 0) {
 881                                 ND_PRINT((ndo, "...)"));
 882                                 goto jp_done;
 883                         }
 884                         bp += advance; len -= advance;
 885                         if (bp + 4 > ep) {
 886                                 ND_PRINT((ndo, "...)"));
 887                                 goto jp_done;
 888                         }
 889                         njoin = EXTRACT_16BITS(&bp[0]);
 890                         nprune = EXTRACT_16BITS(&bp[2]);
 891                         ND_PRINT((ndo, ", joined sources: %u, pruned sources: %u", njoin, nprune));
 892                         bp += 4; len -= 4;
 893                         for (j = 0; j < njoin; j++) {
 894                                 ND_PRINT((ndo, "\n\t      joined source #%u: ", j+1));
 895                                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_source, 0)) < 0) {
 896                                         ND_PRINT((ndo, "...)"));
 897                                         goto jp_done;
 898                                 }
 899                                 bp += advance; len -= advance;
 900                         }
 901                         for (j = 0; j < nprune; j++) {
 902                                 ND_PRINT((ndo, "\n\t      pruned source #%u: ", j+1));
 903                                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_source, 0)) < 0) {
 904                                         ND_PRINT((ndo, "...)"));
 905                                         goto jp_done;
 906                                 }
 907                                 bp += advance; len -= advance;
 908                         }
 909                 }
 910         jp_done:
 911                 break;
 912             }
 913
 914         case PIMV2_TYPE_BOOTSTRAP:
 915         {
 916                 int i, j, frpcnt;
 917                 bp += 4;
 918
 919                 /* Fragment Tag, Hash Mask len, and BSR-priority */
 920                 if (bp + sizeof(uint16_t) >= ep) break;
 921                 ND_PRINT((ndo, " tag=%x", EXTRACT_16BITS(bp)));
 922                 bp += sizeof(uint16_t);
 923                 if (bp >= ep) break;
 924                 ND_PRINT((ndo, " hashmlen=%d", bp[0]));
 925                 if (bp + 1 >= ep) break;
 926                 ND_PRINT((ndo, " BSRprio=%d", bp[1]));
 927                 bp += 2;
 928
 929                 /* Encoded-Unicast-BSR-Address */
 930                 if (bp >= ep) break;
 931                 ND_PRINT((ndo, " BSR="));
 932                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
 933                         ND_PRINT((ndo, "..."));
 934                         break;
 935                 }
 936                 bp += advance;
 937
 938                 for (i = 0; bp < ep; i++) {
 939                         /* Encoded-Group Address */
 940                         ND_PRINT((ndo, " (group%d: ", i));
 941                         if ((advance = pimv2_addr_print(ndo, bp, pimv2_group, 0))
 942                             < 0) {
 943                                 ND_PRINT((ndo, "...)"));
 944                                 goto bs_done;
 945                         }
 946                         bp += advance;
 947
 948                         /* RP-Count, Frag RP-Cnt, and rsvd */
 949                         if (bp >= ep) {
 950                                 ND_PRINT((ndo, "...)"));
 951                                 goto bs_done;
 952                         }
 953                         ND_PRINT((ndo, " RPcnt=%d", bp[0]));
 954                         if (bp + 1 >= ep) {
 955                                 ND_PRINT((ndo, "...)"));
 956                                 goto bs_done;
 957                         }
 958                         ND_PRINT((ndo, " FRPcnt=%d", frpcnt = bp[1]));
 959                         bp += 4;
 960
 961                         for (j = 0; j < frpcnt && bp < ep; j++) {
 962                                 /* each RP info */
 963                                 ND_PRINT((ndo, " RP%d=", j));
 964                                 if ((advance = pimv2_addr_print(ndo, bp,
 965                                                                 pimv2_unicast,
 966                                                                 0)) < 0) {
 967                                         ND_PRINT((ndo, "...)"));
 968                                         goto bs_done;
 969                                 }
 970                                 bp += advance;
 971
 972                                 if (bp + 1 >= ep) {
 973                                         ND_PRINT((ndo, "...)"));
 974                                         goto bs_done;
 975                                 }
 976                                 ND_PRINT((ndo, ",holdtime="));
 977                                 relts_print(ndo, EXTRACT_16BITS(bp));
 978                                 if (bp + 2 >= ep) {
 979                                         ND_PRINT((ndo, "...)"));
 980                                         goto bs_done;
 981                                 }
 982                                 ND_PRINT((ndo, ",prio=%d", bp[2]));
 983                                 bp += 4;
 984                         }
 985                         ND_PRINT((ndo, ")"));
 986                 }
 987            bs_done:
 988                 break;
 989         }
 990         case PIMV2_TYPE_ASSERT:
 991                 bp += 4; len -= 4;
 992                 if (bp >= ep)
 993                         break;
 994                 ND_PRINT((ndo, " group="));
 995                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_group, 0)) < 0) {
 996                         ND_PRINT((ndo, "..."));
 997                         break;
 998                 }
 999                 bp += advance; len -= advance;
1000                 if (bp >= ep)
1001                         break;
1002                 ND_PRINT((ndo, " src="));
1003                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
1004                         ND_PRINT((ndo, "..."));
1005                         break;
1006                 }
1007                 bp += advance; len -= advance;
1008                 if (bp + 8 > ep)
1009                         break;
1010                 if (bp[0] & 0x80)
1011                         ND_PRINT((ndo, " RPT"));
1012                 ND_PRINT((ndo, " pref=%u", EXTRACT_32BITS(&bp[0]) & 0x7fffffff));
1013                 ND_PRINT((ndo, " metric=%u", EXTRACT_32BITS(&bp[4])));
1014                 break;
1015
1016         case PIMV2_TYPE_CANDIDATE_RP:
1017         {
1018                 int i, pfxcnt;
1019                 bp += 4;
1020
1021                 /* Prefix-Cnt, Priority, and Holdtime */
1022                 if (bp >= ep) break;
1023                 ND_PRINT((ndo, " prefix-cnt=%d", bp[0]));
1024                 pfxcnt = bp[0];
1025                 if (bp + 1 >= ep) break;
1026                 ND_PRINT((ndo, " prio=%d", bp[1]));
1027                 if (bp + 3 >= ep) break;
1028                 ND_PRINT((ndo, " holdtime="));
1029                 relts_print(ndo, EXTRACT_16BITS(&bp[2]));
1030                 bp += 4;
1031
1032                 /* Encoded-Unicast-RP-Address */
1033                 if (bp >= ep) break;
1034                 ND_PRINT((ndo, " RP="));
1035                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
1036                         ND_PRINT((ndo, "..."));
1037                         break;
1038                 }
1039                 bp += advance;
1040
1041                 /* Encoded-Group Addresses */
1042                 for (i = 0; i < pfxcnt && bp < ep; i++) {
1043                         ND_PRINT((ndo, " Group%d=", i));
1044                         if ((advance = pimv2_addr_print(ndo, bp, pimv2_group, 0))
1045                             < 0) {
1046                                 ND_PRINT((ndo, "..."));
1047                                 break;
1048                         }
1049                         bp += advance;
1050                 }
1051                 break;
1052         }
1053
1054         case PIMV2_TYPE_PRUNE_REFRESH:
1055                 ND_PRINT((ndo, " src="));
1056                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
1057                         ND_PRINT((ndo, "..."));
1058                         break;
1059                 }
1060                 bp += advance;
1061                 ND_PRINT((ndo, " grp="));
1062                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_group, 0)) < 0) {
1063                         ND_PRINT((ndo, "..."));
1064                         break;
1065                 }
1066                 bp += advance;
1067                 ND_PRINT((ndo, " forwarder="));
1068                 if ((advance = pimv2_addr_print(ndo, bp, pimv2_unicast, 0)) < 0) {
1069                         ND_PRINT((ndo, "..."));
1070                         break;
1071                 }
1072                 bp += advance;
1073                 ND_TCHECK2(bp[0], 2);
1074                 ND_PRINT((ndo, " TUNR "));
1075                 relts_print(ndo, EXTRACT_16BITS(bp));
1076                 break;
1077
1078
1079          default:
1080                 ND_PRINT((ndo, " [type %d]", PIM_TYPE(pim->pim_typever)));
1081                 break;
1082         }
1083
1084         return;
1085
1086 trunc:
1087         ND_PRINT((ndo, "[|pim]"));
1088 }
1089
1090 /*
1091  * Local Variables:
1092  * c-style: whitesmith
1093  * c-basic-offset: 8
1094  * End:
1095  */