plugins/docsis/packet-bpkmattr.c

   1 /* packet-bpkmattr.c
   2  * Routines for Baseline Privacy Key Management Attributes dissection
   3  * Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License
  13  * as published by the Free Software Foundation; either version 2
  14  * of the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <epan/packet.h>
  31
  32 /* BPKM Attributes defined in:
  33  * http://www.cablemodem.com/downloads/specs/SP-BPI+_I10-030730.pdf
  34  */
  35 #define BPKM_RESERVED 0
  36 #define BPKM_SERIAL_NUM 1
  37 #define BPKM_MANUFACTURER_ID 2
  38 #define BPKM_MAC_ADDR 3
  39 #define BPKM_RSA_PUB_KEY 4
  40 #define BPKM_CM_ID 5
  41 #define BPKM_DISPLAY_STR 6
  42 #define BPKM_AUTH_KEY 7
  43 #define BPKM_TEK 8
  44 #define BPKM_KEY_LIFETIME 9
  45 #define BPKM_KEY_SEQ_NUM 10
  46 #define BPKM_HMAC_DIGEST 11
  47 #define BPKM_SAID 12
  48 #define BPKM_TEK_PARAM 13
  49 #define BPKM_OBSOLETED 14
  50 #define BPKM_CBC_IV 15
  51 #define BPKM_ERROR_CODE 16
  52 #define BPKM_CA_CERT 17
  53 #define BPKM_CM_CERT 18
  54 #define BPKM_SEC_CAPABILITIES 19
  55 #define BPKM_CRYPTO_SUITE 20
  56 #define BPKM_CRYPTO_SUITE_LIST 21
  57 #define BPKM_BPI_VERSION 22
  58 #define BPKM_SA_DESCRIPTOR 23
  59 #define BPKM_SA_TYPE 24
  60 #define BPKM_SA_QUERY 25
  61 #define BPKM_SA_QUERY_TYPE 26
  62 #define BPKM_IP_ADDRESS 27
  63 #define BPKM_DNLD_PARAMS 28
  64 #define BPKM_VENDOR_DEFINED 127
  65
  66 /* Initialize the protocol and registered fields */
  67 static int proto_docsis_bpkmattr = -1;
  68 static int hf_docsis_bpkmattr_serial_num = -1;
  69 static int hf_docsis_bpkmattr_manf_id = -1;
  70 static int hf_docsis_bpkmattr_mac_addr = -1;
  71 static int hf_docsis_bpkmattr_rsa_pub_key = -1;
  72 static int hf_docsis_bpkmattr_cm_id = -1;
  73 static int hf_docsis_bpkmattr_display_str = -1;
  74 static int hf_docsis_bpkmattr_auth_key = -1;
  75 static int hf_docsis_bpkmattr_tek = -1;
  76 static int hf_docsis_bpkmattr_key_life = -1;
  77 static int hf_docsis_bpkmattr_key_seq = -1;
  78 static int hf_docsis_bpkmattr_hmac_digest = -1;
  79 static int hf_docsis_bpkmattr_said = -1;
  80 static int hf_docsis_bpkmattr_tek_params = -1;
  81 static int hf_docsis_bpkmattr_cbc_iv = -1;
  82 static int hf_docsis_bpkmattr_error_code = -1;
  83 static int hf_docsis_bpkmattr_vendor_def = -1;
  84 static int hf_docsis_bpkmattr_ca_cert = -1;
  85 static int hf_docsis_bpkmattr_cm_cert = -1;
  86 static int hf_docsis_bpkmattr_security_cap = -1;
  87 static int hf_docsis_bpkmattr_crypto_suite = -1;
  88 static int hf_docsis_bpkmattr_crypto_suite_list = -1;
  89 static int hf_docsis_bpkmattr_bpi_version = -1;
  90 static int hf_docsis_bpkmattr_sa_descr = -1;
  91 static int hf_docsis_bpkmattr_sa_type = -1;
  92 static int hf_docsis_bpkmattr_sa_query = -1;
  93 static int hf_docsis_bpkmattr_sa_query_type = -1;
  94 static int hf_docsis_bpkmattr_ip_address = -1;
  95 static int hf_docsis_bpkmattr_download_param = -1;
  96
  97
  98
  99 /* Initialize the subtree pointers */
 100 static gint ett_docsis_bpkmattr = -1;
 101 static gint ett_docsis_bpkmattr_cmid = -1;
 102 static gint ett_docsis_bpkmattr_scap = -1;
 103 static gint ett_docsis_bpkmattr_tekp = -1;
 104 static gint ett_docsis_bpkmattr_sadsc = -1;
 105 static gint ett_docsis_bpkmattr_saqry = -1;
 106 static gint ett_docsis_bpkmattr_dnld = -1;
 107
 108
 109 static const value_string error_code_vals[] = {
 110   {0, "no information"},
 111   {1, "Unauthorized CM"},
 112   {2, "Unauthorized SAID"},
 113   {3, "Unsolicited"},
 114   {4, "Invalid Key Sequence Number"},
 115   {5, "Key Request authentication failure"},
 116   {6, "Permanent Authorization Failure"},
 117   {7, "Not authorized for requested downstream traffic flow"},
 118   {8, "Downstream traffic flow not mapped to BPI+ SAID"},
 119   {9, "Time of day not acquired"},
 120   {0, NULL},
 121 };
 122
 123 static const value_string crypto_suite_attr_vals[] = {
 124   {0x0100, "CBC Mode, 56 Bit DES & no Data Authentication"},
 125   {0x0200, "CBC Mode, 40 Bit DES & no Data Authentication"},
 126   {0, NULL},
 127 };
 128
 129 static const value_string bpi_ver_vals[] = {
 130   {0, "Reserved"},
 131   {1, "BPI+"},
 132   {0, NULL},
 133 };
 134
 135 /* Code to actually dissect the packets */
 136
 137 /* The dissect_attrs() function does the actual work to dissect the
 138  * attributes.  It's called recursively, to dissect embedded attributes
 139  */
 140 static void
 141 dissect_attrs (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
 142 {
 143   guint8 type;
 144   guint16 length;
 145   int pos = 0;
 146   gint total_len;
 147   proto_item *cmid_it, *tekp_it, *scap_it;
 148   proto_item *saqry_it, *dnld_it, *sadsc_it;
 149   proto_tree *cmid_tree, *tekp_tree, *scap_tree;
 150   proto_tree *saqry_tree, *dnld_tree, *sadsc_tree;
 151   tvbuff_t *cmid_tvb, *tekp_tvb, *scap_tvb;
 152   tvbuff_t *saqry_tvb, *dnld_tvb, *sadsc_tvb;
 153
 154   total_len = tvb_reported_length_remaining (tvb, 0);
 155   while (pos < total_len)
 156     {
 157       type = tvb_get_guint8 (tvb, pos++);
 158       length = tvb_get_ntohs (tvb, pos);
 159       pos += 2;
 160       switch (type)
 161         {
 162         case BPKM_RESERVED:
 163           break;
 164         case BPKM_SERIAL_NUM:
 165           proto_tree_add_item (tree, hf_docsis_bpkmattr_serial_num, tvb, pos,
 166                                length, ENC_ASCII|ENC_NA);
 167           break;
 168         case BPKM_MANUFACTURER_ID:
 169           if (length == 3)
 170             proto_tree_add_item (tree, hf_docsis_bpkmattr_manf_id, tvb, pos,
 171                                  length, ENC_NA);
 172           else
 173             THROW (ReportedBoundsError);
 174           break;
 175         case BPKM_MAC_ADDR:
 176           if (length == 6)
 177             proto_tree_add_item (tree, hf_docsis_bpkmattr_mac_addr, tvb, pos,
 178                                  length, ENC_NA);
 179           else
 180             THROW (ReportedBoundsError);
 181           break;
 182         case BPKM_RSA_PUB_KEY:
 183           proto_tree_add_item (tree, hf_docsis_bpkmattr_rsa_pub_key, tvb, pos,
 184                                length, ENC_NA);
 185           break;
 186         case BPKM_CM_ID:
 187           cmid_it =
 188             proto_tree_add_text (tree, tvb, pos, length,
 189                                  "5 CM Identification");
 190           cmid_tree =
 191             proto_item_add_subtree (cmid_it, ett_docsis_bpkmattr_cmid);
 192           cmid_tvb = tvb_new_subset (tvb, pos, length, length);
 193           dissect_attrs (cmid_tvb, pinfo, cmid_tree);
 194           break;
 195         case BPKM_DISPLAY_STR:
 196           proto_tree_add_item (tree, hf_docsis_bpkmattr_display_str, tvb, pos,
 197                                length, ENC_ASCII|ENC_NA);
 198           break;
 199         case BPKM_AUTH_KEY:
 200           if ((length == 96) || (length == 128))
 201             proto_tree_add_item (tree, hf_docsis_bpkmattr_auth_key, tvb, pos,
 202                                  length, ENC_NA);
 203           else
 204             THROW (ReportedBoundsError);
 205           break;
 206         case BPKM_TEK:
 207           if (length == 8)
 208             proto_tree_add_item (tree, hf_docsis_bpkmattr_tek, tvb, pos,
 209                                  length, ENC_NA);
 210           else
 211             THROW (ReportedBoundsError);
 212           break;
 213         case BPKM_KEY_LIFETIME:
 214           if (length == 4)
 215             proto_tree_add_item (tree, hf_docsis_bpkmattr_key_life, tvb, pos,
 216                                  length, ENC_BIG_ENDIAN);
 217           else
 218             THROW (ReportedBoundsError);
 219           break;
 220         case BPKM_KEY_SEQ_NUM:
 221           if (length == 1)
 222             proto_tree_add_item (tree, hf_docsis_bpkmattr_key_seq, tvb, pos,
 223                                  length, ENC_BIG_ENDIAN);
 224           else
 225             THROW (ReportedBoundsError);
 226           break;
 227         case BPKM_HMAC_DIGEST:
 228           if (length == 20)
 229             proto_tree_add_item (tree, hf_docsis_bpkmattr_hmac_digest, tvb,
 230                                  pos, length, ENC_NA);
 231           else
 232             THROW (ReportedBoundsError);
 233           break;
 234         case BPKM_SAID:
 235           if (length == 2)
 236             proto_tree_add_item (tree, hf_docsis_bpkmattr_said, tvb, pos,
 237                                  length, ENC_BIG_ENDIAN);
 238           else
 239             THROW (ReportedBoundsError);
 240           break;
 241         case BPKM_TEK_PARAM:
 242           tekp_it =
 243             proto_tree_add_text (tree, tvb, pos, length, "13 TEK Parameters");
 244           tekp_tree =
 245             proto_item_add_subtree (tekp_it, ett_docsis_bpkmattr_tekp);
 246           tekp_tvb = tvb_new_subset (tvb, pos, length, length);
 247           dissect_attrs (tekp_tvb, pinfo, tekp_tree);
 248           break;
 249         case BPKM_OBSOLETED:
 250           break;
 251         case BPKM_CBC_IV:
 252           if (length == 8)
 253             proto_tree_add_item (tree, hf_docsis_bpkmattr_cbc_iv, tvb, pos,
 254                                  length, ENC_NA);
 255           else
 256             THROW (ReportedBoundsError);
 257           break;
 258         case BPKM_ERROR_CODE:
 259           if (length == 1)
 260             proto_tree_add_item (tree, hf_docsis_bpkmattr_error_code, tvb,
 261                                  pos, length, ENC_BIG_ENDIAN);
 262           else
 263             THROW (ReportedBoundsError);
 264           break;
 265         case BPKM_CA_CERT:
 266           proto_tree_add_item (tree, hf_docsis_bpkmattr_ca_cert, tvb, pos,
 267                                length, ENC_NA);
 268           break;
 269         case BPKM_CM_CERT:
 270           proto_tree_add_item (tree, hf_docsis_bpkmattr_cm_cert, tvb, pos,
 271                                length, ENC_NA);
 272           break;
 273         case BPKM_SEC_CAPABILITIES:
 274           scap_it =
 275             proto_tree_add_text (tree, tvb, pos, length,
 276                                  "19 Security Capabilities");
 277           scap_tree =
 278             proto_item_add_subtree (scap_it, ett_docsis_bpkmattr_scap);
 279           scap_tvb = tvb_new_subset (tvb, pos, length, length);
 280           dissect_attrs (scap_tvb, pinfo, scap_tree);
 281           break;
 282         case BPKM_CRYPTO_SUITE:
 283           if (length == 2)
 284             proto_tree_add_item (tree, hf_docsis_bpkmattr_crypto_suite, tvb,
 285                                  pos, length, ENC_BIG_ENDIAN);
 286           else
 287             THROW (ReportedBoundsError);
 288           break;
 289         case BPKM_CRYPTO_SUITE_LIST:
 290           proto_tree_add_item (tree, hf_docsis_bpkmattr_crypto_suite_list,
 291                                tvb, pos, length, ENC_NA);
 292           break;
 293         case BPKM_BPI_VERSION:
 294           if (length == 1)
 295             proto_tree_add_item (tree, hf_docsis_bpkmattr_bpi_version, tvb,
 296                                  pos, length, ENC_BIG_ENDIAN);
 297           else
 298             THROW (ReportedBoundsError);
 299           break;
 300         case BPKM_SA_DESCRIPTOR:
 301           sadsc_it =
 302             proto_tree_add_text (tree, tvb, pos, length, "23 SA Descriptor");
 303           sadsc_tree =
 304             proto_item_add_subtree (sadsc_it, ett_docsis_bpkmattr_sadsc);
 305           sadsc_tvb = tvb_new_subset (tvb, pos, length, length);
 306           dissect_attrs (sadsc_tvb, pinfo, sadsc_tree);
 307           break;
 308         case BPKM_SA_TYPE:
 309           if (length == 1)
 310             proto_tree_add_item (tree, hf_docsis_bpkmattr_sa_type, tvb, pos,
 311                                  length, ENC_BIG_ENDIAN);
 312           else
 313             THROW (ReportedBoundsError);
 314           break;
 315         case BPKM_SA_QUERY:
 316           saqry_it =
 317             proto_tree_add_text (tree, tvb, pos, length, "25 SA Query");
 318           saqry_tree =
 319             proto_item_add_subtree (saqry_it, ett_docsis_bpkmattr_saqry);
 320           saqry_tvb = tvb_new_subset (tvb, pos, length, length);
 321           dissect_attrs (saqry_tvb, pinfo, saqry_tree);
 322           break;
 323         case BPKM_SA_QUERY_TYPE:
 324           if (length == 1)
 325             proto_tree_add_item (tree, hf_docsis_bpkmattr_sa_query_type, tvb,
 326                                  pos, length, ENC_BIG_ENDIAN);
 327           else
 328             THROW (ReportedBoundsError);
 329           break;
 330         case BPKM_IP_ADDRESS:
 331           if (length == 4)
 332             proto_tree_add_item (tree, hf_docsis_bpkmattr_ip_address, tvb,
 333                                  pos, length, ENC_BIG_ENDIAN);
 334           else
 335             THROW (ReportedBoundsError);
 336           break;
 337         case BPKM_VENDOR_DEFINED:
 338           proto_tree_add_item (tree, hf_docsis_bpkmattr_vendor_def, tvb, pos,
 339                                length, ENC_NA);
 340         case BPKM_DNLD_PARAMS:
 341           dnld_it =
 342             proto_tree_add_text (tree, tvb, pos, length,
 343                                  "28 Download Parameters");
 344           dnld_tree =
 345             proto_item_add_subtree (dnld_it, ett_docsis_bpkmattr_dnld);
 346           dnld_tvb = tvb_new_subset (tvb, pos, length, length);
 347           dissect_attrs (dnld_tvb, pinfo, dnld_tree);
 348           break;
 349         default:
 350           proto_tree_add_item (tree, hf_docsis_bpkmattr_vendor_def, tvb, pos,
 351                                length, ENC_NA);
 352           break;
 353         }
 354       pos += length;            /* switch */
 355     }                           /* while */
 356 }
 357
 358 static void
 359 dissect_bpkmattr (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
 360 {
 361
 362   proto_item *it;
 363   proto_tree *bpkmattr_tree;
 364
 365   if (tree)
 366     {
 367       it =
 368         proto_tree_add_protocol_format (tree, proto_docsis_bpkmattr, tvb, 0, -1,
 369                                         "BPKM Attributes");
 370       bpkmattr_tree = proto_item_add_subtree (it, ett_docsis_bpkmattr);
 371       dissect_attrs (tvb, pinfo, bpkmattr_tree);
 372     }
 373
 374 }
 375
 376
 377
 378 /* Register the protocol with Wireshark */
 379
 380 /* this format is require because a script is used to build the C function
 381    that calls all the protocol registration.
 382 */
 383
 384
 385 void
 386 proto_register_docsis_bpkmattr (void)
 387 {
 388
 389 /* Setup list of header fields  See Section 1.6.1 for details*/
 390   static hf_register_info hf[] = {
 391     {&hf_docsis_bpkmattr_serial_num,
 392      {"1 Serial Number", "docsis_bpkmattr.serialnum",
 393       FT_STRING, BASE_NONE, NULL, 0x0,
 394       "Serial Number", HFILL}
 395      },
 396     {&hf_docsis_bpkmattr_manf_id,
 397      {"2 Manufacturer Id", "docsis_bpkmattr.manfid",
 398       FT_BYTES, BASE_NONE, NULL, 0x0,
 399       "Manufacturer Id", HFILL}
 400      },
 401     {&hf_docsis_bpkmattr_mac_addr,
 402      {"3 Mac Address", "docsis_bpkmattr.macaddr",
 403       FT_ETHER, BASE_NONE, NULL, 0x0,
 404       "Mac Address", HFILL}
 405      },
 406     {&hf_docsis_bpkmattr_rsa_pub_key,
 407      {"4 RSA Public Key", "docsis_bpkmattr.rsa_pub_key",
 408       FT_BYTES, BASE_NONE, NULL, 0x0,
 409       "RSA Public Key", HFILL}
 410      },
 411     {&hf_docsis_bpkmattr_cm_id,
 412      {"5 CM Identification", "docsis_bpkmattr.cmid",
 413       FT_BYTES, BASE_NONE, NULL, 0x0,
 414       "CM Identification", HFILL}
 415      },
 416     {&hf_docsis_bpkmattr_display_str,
 417      {"6 Display String", "docsis_bpkmattr.dispstr",
 418       FT_STRING, BASE_NONE, NULL, 0x0,
 419       "Display String", HFILL}
 420      },
 421     {&hf_docsis_bpkmattr_auth_key,
 422      {"7 Auth Key", "docsis_bpkmattr.auth_key",
 423       FT_BYTES, BASE_NONE, NULL, 0x0,
 424       "Auth Key", HFILL}
 425      },
 426     {&hf_docsis_bpkmattr_tek,
 427      {"8 Traffic Encryption Key", "docsis_bpkmattr.tek",
 428       FT_BYTES, BASE_NONE, NULL, 0x0,
 429       "Traffic Encryption Key", HFILL}
 430      },
 431     {&hf_docsis_bpkmattr_key_life,
 432      {"9 Key Lifetime (s)", "docsis_bpkmattr.keylife",
 433       FT_UINT32, BASE_DEC, NULL, 0x0,
 434       "Key Lifetime (s)", HFILL}
 435      },
 436     {&hf_docsis_bpkmattr_key_seq,
 437      {"10 Key Sequence Number", "docsis_bpkmattr.keyseq",
 438       FT_UINT8, BASE_DEC, NULL, 0x0,
 439       "Key Sequence Number", HFILL}
 440      },
 441     {&hf_docsis_bpkmattr_hmac_digest,
 442      {"11 HMAC Digest", "docsis_bpkmattr.hmacdigest",
 443       FT_BYTES, BASE_NONE, NULL, 0x0,
 444       "HMAC Digest", HFILL}
 445      },
 446     {&hf_docsis_bpkmattr_said,
 447      {"12 SAID", "docsis_bpkmattr.said",
 448       FT_UINT16, BASE_DEC, NULL, 0x0,
 449       "Security Association ID", HFILL}
 450      },
 451     {&hf_docsis_bpkmattr_tek_params,
 452      {"13 TEK Parameters", "docsis_bpkmattr.tekparams",
 453       FT_BYTES, BASE_NONE, NULL, 0x0,
 454       "TEK Parameters", HFILL}
 455      },
 456     {&hf_docsis_bpkmattr_cbc_iv,
 457      {"14 CBC IV", "docsis_bpkmattr.cbciv",
 458       FT_BYTES, BASE_NONE, NULL, 0x0,
 459       "Cypher Block Chaining", HFILL}
 460      },
 461     {&hf_docsis_bpkmattr_error_code,
 462      {"16 Error Code", "docsis_bpkmattr.errcode",
 463       FT_UINT8, BASE_DEC, VALS (error_code_vals), 0x0,
 464       "Error Code", HFILL}
 465      },
 466     {&hf_docsis_bpkmattr_vendor_def,
 467      {"127 Vendor Defined", "docsis_bpkmattr.vendordef",
 468       FT_BYTES, BASE_NONE, NULL, 0x0,
 469       "Vendor Defined", HFILL}
 470      },
 471     {&hf_docsis_bpkmattr_ca_cert,
 472      {"17 CA Certificate", "docsis_bpkmattr.cacert",
 473       FT_BYTES, BASE_NONE, NULL, 0x0,
 474       "CA Certificate", HFILL}
 475      },
 476     {&hf_docsis_bpkmattr_cm_cert,
 477      {"18 CM Certificate", "docsis_bpkmattr.cmcert",
 478       FT_BYTES, BASE_NONE, NULL, 0x0,
 479       "CM Certificate", HFILL}
 480      },
 481     {&hf_docsis_bpkmattr_security_cap,
 482      {"19 Security Capabilities", "docsis_bpkmattr.seccap",
 483       FT_BYTES, BASE_NONE, NULL, 0x0,
 484       "Security Capabilities", HFILL}
 485      },
 486     {&hf_docsis_bpkmattr_crypto_suite,
 487      {"20 Cryptographic Suite", "docsis_bpkmattr.cryptosuite",
 488       FT_UINT16, BASE_HEX, VALS(crypto_suite_attr_vals), 0x0,
 489       "Cryptographic Suite", HFILL}
 490      },
 491     {&hf_docsis_bpkmattr_crypto_suite_list,
 492      {"21 Cryptographic Suite List", "docsis_bpkmattr.crypto_suite_lst",
 493       FT_BYTES, BASE_NONE, NULL, 0x0,
 494       "Cryptographic Suite", HFILL}
 495      },
 496     {&hf_docsis_bpkmattr_bpi_version,
 497      {"22 BPI Version", "docsis_bpkmattr.bpiver",
 498       FT_UINT8, BASE_DEC, VALS (bpi_ver_vals), 0x0,
 499       "BPKM Attributes", HFILL}
 500      },
 501     {&hf_docsis_bpkmattr_sa_descr,
 502      {"23 SA Descriptor", "docsis_bpkmattr.sadescr",
 503       FT_BYTES, BASE_NONE, NULL, 0x0,
 504       "SA Descriptor", HFILL}
 505      },
 506     {&hf_docsis_bpkmattr_sa_type,
 507      {"24 SA Type", "docsis_bpkmattr.satype",
 508       FT_UINT8, BASE_DEC, NULL, 0x0,
 509       "SA Type", HFILL}
 510      },
 511     {&hf_docsis_bpkmattr_sa_query,
 512      {"25 SA Query", "docsis_bpkmattr.saquery",
 513       FT_BYTES, BASE_NONE, NULL, 0x0,
 514       "SA Query", HFILL}
 515      },
 516     {&hf_docsis_bpkmattr_sa_query_type,
 517      {"26 SA Query Type", "docsis_bpkmattr.saquery_type",
 518       FT_UINT8, BASE_HEX, NULL, 0x0,
 519       "SA Query Type", HFILL}
 520      },
 521     {&hf_docsis_bpkmattr_ip_address,
 522      {"27 IP Address", "docsis_bpkmattr.ipaddr",
 523       FT_IPv4, BASE_NONE, NULL, 0x0,
 524       "IP Address", HFILL}
 525      },
 526     {&hf_docsis_bpkmattr_download_param,
 527      {"28 Download Parameters", "docsis_bpkmattr.dnld_params",
 528       FT_BYTES, BASE_NONE, NULL, 0x0,
 529       "Download Parameters", HFILL}
 530      },
 531   };
 532
 533 /* Setup protocol subtree array */
 534   static gint *ett[] = {
 535     &ett_docsis_bpkmattr,
 536     &ett_docsis_bpkmattr_cmid,
 537     &ett_docsis_bpkmattr_scap,
 538     &ett_docsis_bpkmattr_tekp,
 539     &ett_docsis_bpkmattr_sadsc,
 540     &ett_docsis_bpkmattr_saqry,
 541     &ett_docsis_bpkmattr_dnld
 542   };
 543
 544 /* Register the protocol name and description */
 545   proto_docsis_bpkmattr =
 546     proto_register_protocol
 547     ("DOCSIS Baseline Privacy Key Management Attributes", "DOCSIS BPKM-ATTR",
 548      "docsis_bpkmattr");
 549
 550 /* Required function calls to register the header fields and subtrees used */
 551   proto_register_field_array (proto_docsis_bpkmattr, hf, array_length (hf));
 552   proto_register_subtree_array (ett, array_length (ett));
 553
 554   register_dissector ("docsis_bpkmattr", dissect_bpkmattr,
 555                       proto_docsis_bpkmattr);
 556 }
 557
 558
 559 /* If this dissector uses sub-dissector registration add a registration routine.
 560    This format is required because a script is used to find these routines and
 561    create the code that calls these routines.
 562 */
 563 void
 564 proto_reg_handoff_docsis_bpkmattr (void)
 565 {
 566 #if 0
 567   dissector_handle_t docsis_bpkmattr_handle;
 568
 569   docsis_bpkmattr_handle = find_dissector ("docsis_bpkmattr");
 570   dissector_add_uint ("docsis", 0xFE, docsis_bpkmattr_handle);
 571 #endif
 572
 573 }