/* packet-dsareq.c * Routines for Dynamic Service Addition Request dissection * Copyright 2002, Anand V. Narwani * * $Id$ * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include /* Initialize the protocol and registered fields */ static int proto_docsis_dsareq = -1; static int hf_docsis_dsareq_tranid = -1; static dissector_handle_t docsis_tlv_handle; /* Initialize the subtree pointers */ static gint ett_docsis_dsareq = -1; /* Code to actually dissect the packets */ static void dissect_dsareq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree) { proto_item *it; proto_tree *dsareq_tree = NULL; guint16 transid; tvbuff_t *next_tvb; transid = tvb_get_ntohs (tvb, 0); col_clear (pinfo->cinfo, COL_INFO); col_add_fstr (pinfo->cinfo, COL_INFO, "Dynamic Service Addition Request Tran-id = %u", transid); if (tree) { it = proto_tree_add_protocol_format (tree, proto_docsis_dsareq, tvb, 0, -1, "DSA Request"); dsareq_tree = proto_item_add_subtree (it, ett_docsis_dsareq); proto_tree_add_item (dsareq_tree, hf_docsis_dsareq_tranid, tvb, 0, 2, ENC_BIG_ENDIAN); } /* Call Dissector for Appendix C TLV's */ next_tvb = tvb_new_subset_remaining (tvb, 2); call_dissector (docsis_tlv_handle, next_tvb, pinfo, dsareq_tree); } /* Register the protocol with Wireshark */ /* this format is require because a script is used to build the C function that calls all the protocol registration. */ void proto_register_docsis_dsareq (void) { /* Setup list of header fields See Section 1.6.1 for details*/ static hf_register_info hf[] = { {&hf_docsis_dsareq_tranid, {"Transaction Id", "docsis_dsareq.tranid", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL} }, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_docsis_dsareq, }; /* Register the protocol name and description */ proto_docsis_dsareq = proto_register_protocol ("DOCSIS Dynamic Service Addition Request", "DOCSIS DSA-REQ", "docsis_dsareq"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array (proto_docsis_dsareq, hf, array_length (hf)); proto_register_subtree_array (ett, array_length (ett)); register_dissector ("docsis_dsareq", dissect_dsareq, proto_docsis_dsareq); } /* If this dissector uses sub-dissector registration add a registration routine. This format is required because a script is used to find these routines and create the code that calls these routines. */ void proto_reg_handoff_docsis_dsareq (void) { dissector_handle_t docsis_dsareq_handle; docsis_dsareq_handle = find_dissector ("docsis_dsareq"); docsis_tlv_handle = find_dissector ("docsis_tlv"); dissector_add_uint ("docsis_mgmt", 0x0F, docsis_dsareq_handle); }