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: packet-bpkmattr.c,v 1.6 2003/09/09 07:17:00 guy Exp $
   6  *
   7  * Ethereal - Network traffic analyzer
   8  * By Gerald Combs <gerald@ethereal.com>
   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 "plugins/plugin_api.h"
  31 #include "plugins/plugin_api_defs.h"
  32 #include "moduleinfo.h"
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 #include <gmodule.h>
  39
  40 #include <epan/packet.h>
  41
  42 /* BPKM Attributes defined in:
  43  * http://www.cablemodem.com/downloads/specs/SP-BPI+_I10-030730.pdf
  44  */
  45 #define BPKM_RESERVED 0
  46 #define BPKM_SERIAL_NUM 1
  47 #define BPKM_MANUFACTURER_ID 2
  48 #define BPKM_MAC_ADDR 3
  49 #define BPKM_RSA_PUB_KEY 4
  50 #define BPKM_CM_ID 5
  51 #define BPKM_DISPLAY_STR 6
  52 #define BPKM_AUTH_KEY 7
  53 #define BPKM_TEK 8
  54 #define BPKM_KEY_LIFETIME 9
  55 #define BPKM_KEY_SEQ_NUM 10
  56 #define BPKM_HMAC_DIGEST 11
  57 #define BPKM_SAID 12
  58 #define BPKM_TEK_PARAM 13
  59 #define BPKM_OBSOLETED 14
  60 #define BPKM_CBC_IV 15
  61 #define BPKM_ERROR_CODE 16
  62 #define BPKM_CA_CERT 17
  63 #define BPKM_CM_CERT 18
  64 #define BPKM_SEC_CAPABILITIES 19
  65 #define BPKM_CRYPTO_SUITE 20
  66 #define BPKM_CRYPTO_SUITE_LIST 21
  67 #define BPKM_BPI_VERSION 22
  68 #define BPKM_SA_DESCRIPTOR 23
  69 #define BPKM_SA_TYPE 24
  70 #define BPKM_SA_QUERY 25
  71 #define BPKM_SA_QUERY_TYPE 26
  72 #define BPKM_IP_ADDRESS 27
  73 #define BPKM_DNLD_PARAMS 28
  74 #define BPKM_VENDOR_DEFINED 127
  75
  76 /* Initialize the protocol and registered fields */
  77 static int proto_docsis_bpkmattr = -1;
  78 static int hf_docsis_bpkmattr = -1;
  79 static int hf_docsis_bpkmattr_serial_num = -1;
  80 static int hf_docsis_bpkmattr_manf_id = -1;
  81 static int hf_docsis_bpkmattr_mac_addr = -1;
  82 static int hf_docsis_bpkmattr_rsa_pub_key = -1;
  83 static int hf_docsis_bpkmattr_cm_id = -1;
  84 static int hf_docsis_bpkmattr_display_str = -1;
  85 static int hf_docsis_bpkmattr_auth_key = -1;
  86 static int hf_docsis_bpkmattr_tek = -1;
  87 static int hf_docsis_bpkmattr_key_life = -1;
  88 static int hf_docsis_bpkmattr_key_seq = -1;
  89 static int hf_docsis_bpkmattr_hmac_digest = -1;
  90 static int hf_docsis_bpkmattr_said = -1;
  91 static int hf_docsis_bpkmattr_tek_params = -1;
  92 static int hf_docsis_bpkmattr_cbc_iv = -1;
  93 static int hf_docsis_bpkmattr_error_code = -1;
  94 static int hf_docsis_bpkmattr_vendor_def = -1;
  95 static int hf_docsis_bpkmattr_ca_cert = -1;
  96 static int hf_docsis_bpkmattr_cm_cert = -1;
  97 static int hf_docsis_bpkmattr_security_cap = -1;
  98 static int hf_docsis_bpkmattr_crypto_suite = -1;
  99 static int hf_docsis_bpkmattr_crypto_suite_list = -1;
 100 static int hf_docsis_bpkmattr_bpi_version = -1;
 101 static int hf_docsis_bpkmattr_sa_descr = -1;
 102 static int hf_docsis_bpkmattr_sa_type = -1;
 103 static int hf_docsis_bpkmattr_sa_query = -1;
 104 static int hf_docsis_bpkmattr_sa_query_type = -1;
 105 static int hf_docsis_bpkmattr_ip_address = -1;
 106 static int hf_docsis_bpkmattr_download_param = -1;
 107
 108
 109
 110 /* Initialize the subtree pointers */
 111 static gint ett_docsis_bpkmattr = -1;
 112 static gint ett_docsis_bpkmattr_cmid = -1;
 113 static gint ett_docsis_bpkmattr_scap = -1;
 114 static gint ett_docsis_bpkmattr_tekp = -1;
 115 static gint ett_docsis_bpkmattr_sadsc = -1;
 116 static gint ett_docsis_bpkmattr_saqry = -1;
 117 static gint ett_docsis_bpkmattr_dnld = -1;
 118
 119
 120 static const value_string error_code_vals[] = {
 121   {0, "no information"},
 122   {1, "Unauthorized CM"},
 123   {2, "Unauthorized SAID"},
 124   {3, "Unsolicited"},
 125   {4, "Invalid Key Sequence Number"},
 126   {5, "Key Request authentication failure"},
 127   {6, "Permanent Authorization Failure"},
 128   {7, "Not authorized for requested downstream traffic flow"},
 129   {8, "Downstream traffic flow not mapped to BPI+ SAID"},
 130   {9, "Time of day not acquired"},
 131   {0, NULL},
 132 };
 133
 134 static const value_string crypto_suite_attr_vals[] = {
 135   {0x0100, "CBC Mode, 56 Bit DES & no Data Authentication"},
 136   {0x0200, "CBC Mode, 40 Bit DES & no Data Authentication"},
 137   {0, NULL},
 138 };
 139
 140 static const value_string bpi_ver_vals[] = {
 141   {0, "Reserved"},
 142   {1, "BPI+"},
 143   {0, NULL},
 144 };
 145
 146 /* Code to actually dissect the packets */
 147
 148 /* The dissect_attrs() function does the actual work to dissect the
 149  * attributes.  It's called recursively, to dissect embedded attributes
 150  */
 151 static void
 152 dissect_attrs (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
 153 {
 154   guint8 type;
 155   guint16 length;
 156   guint16 pos = 0;
 157   guint16 total_len;
 158   proto_item *cmid_it, *tekp_it, *scap_it;
 159   proto_item *saqry_it, *dnld_it, *sadsc_it;
 160   proto_tree *cmid_tree, *tekp_tree, *scap_tree;
 161   proto_tree *saqry_tree, *dnld_tree, *sadsc_tree;
 162   tvbuff_t *cmid_tvb, *tekp_tvb, *scap_tvb;
 163   tvbuff_t *saqry_tvb, *dnld_tvb, *sadsc_tvb;
 164
 165   total_len = tvb_length_remaining (tvb, 0);
 166   while (pos < total_len)
 167     {
 168       type = tvb_get_guint8 (tvb, pos++);
 169       length = tvb_get_ntohs (tvb, pos);
 170       pos += 2;
 171       switch (type)
 172         {
 173         case BPKM_RESERVED:
 174           break;
 175         case BPKM_SERIAL_NUM:
 176           proto_tree_add_item (tree, hf_docsis_bpkmattr_serial_num, tvb, pos,
 177                                length, FALSE);
 178           break;
 179         case BPKM_MANUFACTURER_ID:
 180           if (length == 3)
 181             proto_tree_add_item (tree, hf_docsis_bpkmattr_manf_id, tvb, pos,
 182                                  length, FALSE);
 183           else
 184             THROW (ReportedBoundsError);
 185           break;
 186         case BPKM_MAC_ADDR:
 187           if (length == 6)
 188             proto_tree_add_item (tree, hf_docsis_bpkmattr_mac_addr, tvb, pos,
 189                                  length, FALSE);
 190           else
 191             THROW (ReportedBoundsError);
 192           break;
 193         case BPKM_RSA_PUB_KEY:
 194           proto_tree_add_item (tree, hf_docsis_bpkmattr_rsa_pub_key, tvb, pos,
 195                                length, FALSE);
 196           break;
 197         case BPKM_CM_ID:
 198           cmid_it =
 199             proto_tree_add_text (tree, tvb, pos, length,
 200                                  "5 CM Identification");
 201           cmid_tree =
 202             proto_item_add_subtree (cmid_it, ett_docsis_bpkmattr_cmid);
 203           cmid_tvb = tvb_new_subset (tvb, pos, length, length);
 204           dissect_attrs (cmid_tvb, pinfo, cmid_tree);
 205           break;
 206         case BPKM_DISPLAY_STR:
 207           proto_tree_add_item (tree, hf_docsis_bpkmattr_display_str, tvb, pos,
 208                                length, FALSE);
 209           break;
 210         case BPKM_AUTH_KEY:
 211           if ((length == 96) || (length == 128))
 212             proto_tree_add_item (tree, hf_docsis_bpkmattr_auth_key, tvb, pos,
 213                                  length, FALSE);
 214           else
 215             THROW (ReportedBoundsError);
 216           break;
 217         case BPKM_TEK:
 218           if (length == 8)
 219             proto_tree_add_item (tree, hf_docsis_bpkmattr_tek, tvb, pos,
 220                                  length, FALSE);
 221           else
 222             THROW (ReportedBoundsError);
 223           break;
 224         case BPKM_KEY_LIFETIME:
 225           if (length == 4)
 226             proto_tree_add_item (tree, hf_docsis_bpkmattr_key_life, tvb, pos,
 227                                  length, FALSE);
 228           else
 229             THROW (ReportedBoundsError);
 230           break;
 231         case BPKM_KEY_SEQ_NUM:
 232           if (length == 1)
 233             proto_tree_add_item (tree, hf_docsis_bpkmattr_key_seq, tvb, pos,
 234                                  length, FALSE);
 235           else
 236             THROW (ReportedBoundsError);
 237           break;
 238         case BPKM_HMAC_DIGEST:
 239           if (length == 20)
 240             proto_tree_add_item (tree, hf_docsis_bpkmattr_hmac_digest, tvb,
 241                                  pos, length, FALSE);
 242           else
 243             THROW (ReportedBoundsError);
 244           break;
 245         case BPKM_SAID:
 246           if (length == 2)
 247             proto_tree_add_item (tree, hf_docsis_bpkmattr_said, tvb, pos,
 248                                  length, FALSE);
 249           else
 250             THROW (ReportedBoundsError);
 251           break;
 252         case BPKM_TEK_PARAM:
 253           tekp_it =
 254             proto_tree_add_text (tree, tvb, pos, length, "13 TEK Parameters");
 255           tekp_tree =
 256             proto_item_add_subtree (tekp_it, ett_docsis_bpkmattr_tekp);
 257           tekp_tvb = tvb_new_subset (tvb, pos, length, length);
 258           dissect_attrs (tekp_tvb, pinfo, tekp_tree);
 259           break;
 260         case BPKM_OBSOLETED:
 261           break;
 262         case BPKM_CBC_IV:
 263           if (length == 8)
 264             proto_tree_add_item (tree, hf_docsis_bpkmattr_cbc_iv, tvb, pos,
 265                                  length, FALSE);
 266           else
 267             THROW (ReportedBoundsError);
 268           break;
 269         case BPKM_ERROR_CODE:
 270           if (length == 1)
 271             proto_tree_add_item (tree, hf_docsis_bpkmattr_error_code, tvb,
 272                                  pos, length, FALSE);
 273           else
 274             THROW (ReportedBoundsError);
 275           break;
 276         case BPKM_CA_CERT:
 277           proto_tree_add_item (tree, hf_docsis_bpkmattr_ca_cert, tvb, pos,
 278                                length, FALSE);
 279           break;
 280         case BPKM_CM_CERT:
 281           proto_tree_add_item (tree, hf_docsis_bpkmattr_cm_cert, tvb, pos,
 282                                length, FALSE);
 283           break;
 284         case BPKM_SEC_CAPABILITIES:
 285           scap_it =
 286             proto_tree_add_text (tree, tvb, pos, length,
 287                                  "19 Security Capabilities");
 288           scap_tree =
 289             proto_item_add_subtree (scap_it, ett_docsis_bpkmattr_scap);
 290           scap_tvb = tvb_new_subset (tvb, pos, length, length);
 291           dissect_attrs (scap_tvb, pinfo, scap_tree);
 292           break;
 293         case BPKM_CRYPTO_SUITE:
 294           if (length == 2)
 295             proto_tree_add_item (tree, hf_docsis_bpkmattr_crypto_suite, tvb,
 296                                  pos, length, FALSE);
 297           else
 298             THROW (ReportedBoundsError);
 299           break;
 300         case BPKM_CRYPTO_SUITE_LIST:
 301           proto_tree_add_item (tree, hf_docsis_bpkmattr_crypto_suite_list,
 302                                tvb, pos, length, FALSE);
 303           break;
 304         case BPKM_BPI_VERSION:
 305           if (length == 1)
 306             proto_tree_add_item (tree, hf_docsis_bpkmattr_bpi_version, tvb,
 307                                  pos, length, FALSE);
 308           else
 309             THROW (ReportedBoundsError);
 310           break;
 311         case BPKM_SA_DESCRIPTOR:
 312           sadsc_it =
 313             proto_tree_add_text (tree, tvb, pos, length, "23 SA Descriptor");
 314           sadsc_tree =
 315             proto_item_add_subtree (sadsc_it, ett_docsis_bpkmattr_sadsc);
 316           sadsc_tvb = tvb_new_subset (tvb, pos, length, length);
 317           dissect_attrs (sadsc_tvb, pinfo, sadsc_tree);
 318           break;
 319         case BPKM_SA_TYPE:
 320           if (length == 1)
 321             proto_tree_add_item (tree, hf_docsis_bpkmattr_sa_type, tvb, pos,
 322                                  length, FALSE);
 323           else
 324             THROW (ReportedBoundsError);
 325           break;
 326         case BPKM_SA_QUERY:
 327           saqry_it =
 328             proto_tree_add_text (tree, tvb, pos, length, "25 SA Query");
 329           saqry_tree =
 330             proto_item_add_subtree (saqry_it, ett_docsis_bpkmattr_saqry);
 331           saqry_tvb = tvb_new_subset (tvb, pos, length, length);
 332           dissect_attrs (saqry_tvb, pinfo, saqry_tree);
 333           break;
 334         case BPKM_SA_QUERY_TYPE:
 335           if (length == 1)
 336             proto_tree_add_item (tree, hf_docsis_bpkmattr_sa_query_type, tvb,
 337                                  pos, length, FALSE);
 338           else
 339             THROW (ReportedBoundsError);
 340           break;
 341         case BPKM_IP_ADDRESS:
 342           if (length == 4)
 343             proto_tree_add_item (tree, hf_docsis_bpkmattr_ip_address, tvb,
 344                                  pos, length, FALSE);
 345           else
 346             THROW (ReportedBoundsError);
 347           break;
 348         case BPKM_VENDOR_DEFINED:
 349           proto_tree_add_item (tree, hf_docsis_bpkmattr_vendor_def, tvb, pos,
 350                                length, FALSE);
 351         case BPKM_DNLD_PARAMS:
 352           dnld_it =
 353             proto_tree_add_text (tree, tvb, pos, length,
 354                                  "28 Download Parameters");
 355           dnld_tree =
 356             proto_item_add_subtree (dnld_it, ett_docsis_bpkmattr_dnld);
 357           dnld_tvb = tvb_new_subset (tvb, pos, length, length);
 358           dissect_attrs (dnld_tvb, pinfo, dnld_tree);
 359           break;
 360         default:
 361           proto_tree_add_item (tree, hf_docsis_bpkmattr_vendor_def, tvb, pos,
 362                                length, FALSE);
 363           break;
 364         }
 365       pos += length;            /* switch */
 366     }                           /* while */
 367 }
 368
 369 static void
 370 dissect_bpkmattr (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
 371 {
 372
 373   proto_item *it;
 374   proto_tree *bpkmattr_tree;
 375
 376   if (tree)
 377     {
 378       it =
 379         proto_tree_add_protocol_format (tree, proto_docsis_bpkmattr, tvb, 0,
 380                                         tvb_length_remaining (tvb, 0),
 381                                         "BPKM Attributes");
 382       bpkmattr_tree = proto_item_add_subtree (it, ett_docsis_bpkmattr);
 383       dissect_attrs (tvb, pinfo, bpkmattr_tree);
 384     }
 385
 386 }
 387
 388
 389
 390 /* Register the protocol with Ethereal */
 391
 392 /* this format is require because a script is used to build the C function
 393    that calls all the protocol registration.
 394 */
 395
 396
 397 void
 398 proto_register_docsis_bpkmattr (void)
 399 {
 400
 401 /* Setup list of header fields  See Section 1.6.1 for details*/
 402   static hf_register_info hf[] = {
 403     {&hf_docsis_bpkmattr,
 404      {"BPKM Attributes", "docsis.bpkmattr",
 405       FT_BYTES, BASE_HEX, NULL, 0x0,
 406       "BPKM Attributes", HFILL}
 407      },
 408     {&hf_docsis_bpkmattr_serial_num,
 409      {"1 Serial Number", "docsis.bpkmattr.serialnum",
 410       FT_STRING, BASE_DEC, NULL, 0x0,
 411       "Serial Number", HFILL}
 412      },
 413     {&hf_docsis_bpkmattr_manf_id,
 414      {"2 Manufacturer Id", "docsis.bpkmattr.manfid",
 415       FT_BYTES, BASE_HEX, NULL, 0x0,
 416       "Manufacturer Id", HFILL}
 417      },
 418     {&hf_docsis_bpkmattr_mac_addr,
 419      {"3 Mac Address", "docsis.bpkmattr.macaddr",
 420       FT_ETHER, BASE_HEX, NULL, 0x0,
 421       "Mac Address", HFILL}
 422      },
 423     {&hf_docsis_bpkmattr_rsa_pub_key,
 424      {"4 RSA Public Key", "docsis.bpkmattr.rsa_pub_key",
 425       FT_BYTES, BASE_HEX, NULL, 0x0,
 426       "RSA Public Key", HFILL}
 427      },
 428     {&hf_docsis_bpkmattr_cm_id,
 429      {"5 CM Identification", "docsis.bpkmattr.cmid",
 430       FT_BYTES, BASE_HEX, NULL, 0x0,
 431       "CM Identification", HFILL}
 432      },
 433     {&hf_docsis_bpkmattr_display_str,
 434      {"6 Display String", "docsis.bpkmattr.dispstr",
 435       FT_STRING, BASE_DEC, NULL, 0x0,
 436       "Display String", HFILL}
 437      },
 438     {&hf_docsis_bpkmattr_auth_key,
 439      {"7 Auth Key", "docsis.bpkmattr.auth_key",
 440       FT_BYTES, BASE_HEX, NULL, 0x0,
 441       "Auth Key", HFILL}
 442      },
 443     {&hf_docsis_bpkmattr_tek,
 444      {"8 Traffic Encryption Key", "docsis.bpkmattr.tek",
 445       FT_BYTES, BASE_HEX, NULL, 0x0,
 446       "Traffic Encryption Key", HFILL}
 447      },
 448     {&hf_docsis_bpkmattr_key_life,
 449      {"9 Key Lifetime (s)", "docsis.bpkmattr.keylife",
 450       FT_UINT32, BASE_DEC, NULL, 0x0,
 451       "Key Lifetime (s)", HFILL}
 452      },
 453     {&hf_docsis_bpkmattr_key_seq,
 454      {"10 Key Sequence Number", "docsis.bpkmattr.keyseq",
 455       FT_UINT8, BASE_DEC, NULL, 0x0,
 456       "Key Sequence Number", HFILL}
 457      },
 458     {&hf_docsis_bpkmattr_hmac_digest,
 459      {"11 HMAC Digest", "docsis.bpkmattr.hmacdigest",
 460       FT_BYTES, BASE_HEX, NULL, 0x0,
 461       "HMAC Digest", HFILL}
 462      },
 463     {&hf_docsis_bpkmattr_said,
 464      {"12 SAID", "docsis.bpkmattr.said",
 465       FT_UINT16, BASE_DEC, NULL, 0x0,
 466       "Security Association ID", HFILL}
 467      },
 468     {&hf_docsis_bpkmattr_tek_params,
 469      {"13 TEK Parameters", "docsis.bpkmattr.tekparams",
 470       FT_BYTES, BASE_HEX, NULL, 0x0,
 471       "TEK Parameters", HFILL}
 472      },
 473     {&hf_docsis_bpkmattr_cbc_iv,
 474      {"14 CBC IV", "docsis.bpkmattr.cbciv",
 475       FT_BYTES, BASE_HEX, NULL, 0x0,
 476       "Cypher Block Chaining", HFILL}
 477      },
 478     {&hf_docsis_bpkmattr_error_code,
 479      {"16 Error Code", "docsis.bpkmattr.errcode",
 480       FT_UINT8, BASE_DEC, VALS (error_code_vals), 0x0,
 481       "Error Code", HFILL}
 482      },
 483     {&hf_docsis_bpkmattr_vendor_def,
 484      {"127 Vendor Defined", "docsis.bpkmattr.vendordef",
 485       FT_BYTES, BASE_HEX, NULL, 0x0,
 486       "Vendor Defined", HFILL}
 487      },
 488     {&hf_docsis_bpkmattr_ca_cert,
 489      {"17 CA Certificate", "docsis.bpkmattr.cacert",
 490       FT_BYTES, BASE_HEX, NULL, 0x0,
 491       "CA Certificate", HFILL}
 492      },
 493     {&hf_docsis_bpkmattr_cm_cert,
 494      {"18 CM Certificate", "docsis.bpkmattr.cmcert",
 495       FT_BYTES, BASE_HEX, NULL, 0x0,
 496       "CM Certificate", HFILL}
 497      },
 498     {&hf_docsis_bpkmattr_security_cap,
 499      {"19 Security Capabilities", "docsis.bpkmattr.seccap",
 500       FT_BYTES, BASE_HEX, NULL, 0x0,
 501       "Security Capabilities", HFILL}
 502      },
 503     {&hf_docsis_bpkmattr_crypto_suite,
 504      {"20 Cryptographic Suite", "docsis.bpkmattr.cryptosuite",
 505       FT_UINT16, BASE_HEX, VALS(crypto_suite_attr_vals), 0x0,
 506       "Cryptographic Suite", HFILL}
 507      },
 508     {&hf_docsis_bpkmattr_crypto_suite_list,
 509      {"21 Cryptographic Suite List", "docsis.bpkmattr.crypto_suite_lst",
 510       FT_BYTES, BASE_HEX, NULL, 0x0,
 511       "Cryptographic Suite", HFILL}
 512      },
 513     {&hf_docsis_bpkmattr_bpi_version,
 514      {"22 BPI Version", "docsis.bpkmattr.bpiver",
 515       FT_UINT8, BASE_DEC, VALS (bpi_ver_vals), 0x0,
 516       "BPKM Attributes", HFILL}
 517      },
 518     {&hf_docsis_bpkmattr_sa_descr,
 519      {"23 SA Descriptor", "docsis.bpkmattr.sadescr",
 520       FT_BYTES, BASE_HEX, NULL, 0x0,
 521       "SA Descriptor", HFILL}
 522      },
 523     {&hf_docsis_bpkmattr_sa_type,
 524      {"24 SA Type", "docsis.bpkmattr.satype",
 525       FT_UINT8, BASE_DEC, NULL, 0x0,
 526       "SA Type", HFILL}
 527      },
 528     {&hf_docsis_bpkmattr_sa_query,
 529      {"25 SA Query", "docsis.bpkmattr.saquery",
 530       FT_BYTES, BASE_HEX, NULL, 0x0,
 531       "SA Query", HFILL}
 532      },
 533     {&hf_docsis_bpkmattr_sa_query_type,
 534      {"26 SA Query Type", "docsis.bpkmattr.saquery_type",
 535       FT_UINT8, BASE_HEX, NULL, 0x0,
 536       "SA Query Type", HFILL}
 537      },
 538     {&hf_docsis_bpkmattr_ip_address,
 539      {"27 IP Address", "docsis.bpkmattr.ipaddr",
 540       FT_IPv4, BASE_DEC, NULL, 0x0,
 541       "IP Address", HFILL}
 542      },
 543     {&hf_docsis_bpkmattr_download_param,
 544      {"28 Download Parameters", "docsis.bpkmattr.dnld_params",
 545       FT_BYTES, BASE_HEX, NULL, 0x0,
 546       "Download Parameters", HFILL}
 547      },
 548   };
 549
 550 /* Setup protocol subtree array */
 551   static gint *ett[] = {
 552     &ett_docsis_bpkmattr,
 553     &ett_docsis_bpkmattr_cmid,
 554     &ett_docsis_bpkmattr_scap,
 555     &ett_docsis_bpkmattr_tekp,
 556     &ett_docsis_bpkmattr_sadsc,
 557     &ett_docsis_bpkmattr_saqry,
 558     &ett_docsis_bpkmattr_dnld
 559   };
 560
 561 /* Register the protocol name and description */
 562   proto_docsis_bpkmattr =
 563     proto_register_protocol
 564     ("DOCSIS Baseline Privacy Key Management Attributes", "DOCSIS BPKM-ATTR",
 565      "docsis_bpkmattr");
 566
 567 /* Required function calls to register the header fields and subtrees used */
 568   proto_register_field_array (proto_docsis_bpkmattr, hf, array_length (hf));
 569   proto_register_subtree_array (ett, array_length (ett));
 570
 571   register_dissector ("docsis_bpkmattr", dissect_bpkmattr,
 572                       proto_docsis_bpkmattr);
 573 }
 574
 575
 576 /* If this dissector uses sub-dissector registration add a registration routine.
 577    This format is required because a script is used to find these routines and
 578    create the code that calls these routines.
 579 */
 580 void
 581 proto_reg_handoff_docsis_bpkmattr (void)
 582 {
 583   dissector_handle_t docsis_bpkmattr_handle;
 584
 585   docsis_bpkmattr_handle = find_dissector ("docsis_bpkmattr");
 586   dissector_add ("docsis", 0xFE, docsis_bpkmattr_handle);
 587
 588 }