/* packet-dpvreq.c * Routines for DOCSIS 3.0 DOCSIS Path Verify Response Message dissection. * Copyright 2010, Guido Reismueller * * $Id$ * * 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_dpvreq = -1; static int hf_docsis_dpvreq_tranid = -1; static int hf_docsis_dpvreq_dschan = -1; static int hf_docsis_dpvreq_flags = -1; static int hf_docsis_dpvreq_us_sf = -1; static int hf_docsis_dpvreq_n = -1; static int hf_docsis_dpvreq_start = -1; static int hf_docsis_dpvreq_end = -1; static int hf_docsis_dpvreq_ts_start = -1; static int hf_docsis_dpvreq_ts_end = -1; /* Initialize the subtree pointers */ static gint ett_docsis_dpvreq = -1; /* Code to actually dissect the packets */ static void dissect_dpvreq (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree) { proto_item *it; proto_tree *dpvreq_tree = NULL; guint16 transid; guint8 dschan; transid = tvb_get_ntohs (tvb, 0); dschan = tvb_get_guint8 (tvb, 2); col_clear (pinfo->cinfo, COL_INFO); col_add_fstr (pinfo->cinfo, COL_INFO, "DOCSIS Path Verify Request: Transaction-Id = %u DS-Ch %d", transid, dschan); if (tree) { it = proto_tree_add_protocol_format (tree, proto_docsis_dpvreq, tvb, 0, -1, "DPV Request"); dpvreq_tree = proto_item_add_subtree (it, ett_docsis_dpvreq); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_tranid, tvb, 0, 2, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_dschan, tvb, 2, 1, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_flags, tvb, 3, 1, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_us_sf, tvb, 4, 4, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_n, tvb, 8, 2, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_start, tvb, 10, 1, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_end, tvb, 11, 1, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_ts_start, tvb, 12, 4, ENC_BIG_ENDIAN); proto_tree_add_item (dpvreq_tree, hf_docsis_dpvreq_ts_end, tvb, 16, 4, ENC_BIG_ENDIAN); } } /* 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_dpvreq (void) { /* Setup list of header fields See Section 1.6.1 for details*/ static hf_register_info hf[] = { {&hf_docsis_dpvreq_tranid, {"Transaction Id", "docsis_dpvreq.tranid", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_dschan, {"Downstream Channel ID", "docsis_dpvreq.dschan", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_flags, {"Flags", "docsis_dpvreq.flags", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_us_sf, {"Upstream Service Flow ID", "docsis_dpvreq.us_sf", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_n, {"N (Measurement avaraging factor)", "docsis_dpvreq.n", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_start, {"Start Reference Point", "docsis_dpvreq.start", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_end, {"End Reference Point", "docsis_dpvreq.end", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_ts_start, {"Timestamp Start", "docsis_dpvreq.ts_start", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL} }, {&hf_docsis_dpvreq_ts_end, {"Timestamp End", "docsis_dpvreq.ts_end", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL} }, }; /* Setup protocol subtree array */ static gint *ett[] = { &ett_docsis_dpvreq, }; /* Register the protocol name and description */ proto_docsis_dpvreq = proto_register_protocol ("DOCSIS Path Verify Request", "DOCSIS DPV-REQ", "docsis_dpvreq"); /* Required function calls to register the header fields and subtrees used */ proto_register_field_array (proto_docsis_dpvreq, hf, array_length (hf)); proto_register_subtree_array (ett, array_length (ett)); register_dissector ("docsis_dpvreq", dissect_dpvreq, proto_docsis_dpvreq); } /* 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_dpvreq (void) { dissector_handle_t docsis_dpvreq_handle; docsis_dpvreq_handle = find_dissector ("docsis_dpvreq"); dissector_add_uint ("docsis_mgmt", 0x27, docsis_dpvreq_handle); }