forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
Ethernet frames, one for encapsulated frames that include an FCS and one for encapsulated frames that don't include an FCS. Use the appropriate versions. In the ISL dissector, do the same sort of processing we do in the Ethernet dissector to figure out whether the frame has a trailer or not and whether it has an FCS or not. svn path=/trunk/; revision=12593
194 lines
5.9 KiB
C
194 lines
5.9 KiB
C
/* packet-cosine.c
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* Routines for decoding CoSine IPNOS L2 debug output
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*
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* $Id$
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*
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* Motonori Shindo <mshindo@mshindo.net>
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* XXX TODO:
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* o PPoATM and PPoFR encapsulation needs more test.
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*
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <string.h>
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#include <epan/packet.h>
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static int proto_cosine = -1;
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static int hf_pro = -1;
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static int hf_off = -1;
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static int hf_pri = -1;
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static int hf_rm = -1;
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static int hf_err = -1;
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static gint ett_raw = -1;
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static dissector_handle_t eth_withoutfcs_handle;
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static dissector_handle_t ppp_hdlc_handle;
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static dissector_handle_t llc_handle;
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static dissector_handle_t chdlc_handle;
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static dissector_handle_t fr_handle;
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static dissector_handle_t data_handle;
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static void
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dissect_cosine(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_tree *fh_tree;
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proto_item *ti;
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union wtap_pseudo_header *pseudo_header = pinfo->pseudo_header;
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/* load the top pane info. This should be overwritten by
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the next protocol in the stack */
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if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
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col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A" );
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if(check_col(pinfo->cinfo, COL_RES_DL_DST))
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col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A" );
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if(check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "N/A" );
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if(check_col(pinfo->cinfo, COL_INFO))
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col_set_str(pinfo->cinfo, COL_INFO, "CoSine IPNOS L2 debug output" );
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/* populate a tree in the second pane with the status of the link
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layer (ie none) */
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if(tree) {
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ti = proto_tree_add_protocol_format(tree, proto_cosine, tvb, 0, 4,
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"CoSine IPNOS L2 debug output (%s)",
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pseudo_header->cosine.if_name);
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fh_tree = proto_item_add_subtree(ti, ett_raw);
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proto_tree_add_uint(fh_tree, hf_pro, tvb, 0, 0, pseudo_header->cosine.pro);
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proto_tree_add_uint(fh_tree, hf_off, tvb, 0, 0, pseudo_header->cosine.off);
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proto_tree_add_uint(fh_tree, hf_pri, tvb, 0, 0, pseudo_header->cosine.pri);
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proto_tree_add_uint(fh_tree, hf_rm, tvb, 0, 0, pseudo_header->cosine.rm);
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proto_tree_add_uint(fh_tree, hf_err, tvb, 0, 0, pseudo_header->cosine.err);
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switch (pseudo_header->cosine.encap) {
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case COSINE_ENCAP_ETH:
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break;
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case COSINE_ENCAP_ATM:
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case COSINE_ENCAP_PPoATM:
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proto_tree_add_text(fh_tree, tvb, 0, 16, "SAR header");
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break;
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case COSINE_ENCAP_PPP:
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case COSINE_ENCAP_FR:
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case COSINE_ENCAP_PPoFR:
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proto_tree_add_text(fh_tree, tvb, 0, 4, "Channel handle ID");
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break;
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case COSINE_ENCAP_HDLC:
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if (pseudo_header->cosine.direction == COSINE_DIR_TX) {
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proto_tree_add_text(fh_tree, tvb, 0, 2,
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"Channel handle ID");
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} else if (pseudo_header->cosine.direction == COSINE_DIR_RX) {
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proto_tree_add_text(fh_tree, tvb, 0, 4,
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"Channel handle ID");
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}
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break;
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default:
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break;
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}
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}
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switch (pseudo_header->cosine.encap) {
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case COSINE_ENCAP_ETH:
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call_dissector(eth_withoutfcs_handle, tvb_new_subset(tvb, 0, -1, -1),
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pinfo, tree);
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break;
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case COSINE_ENCAP_ATM:
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case COSINE_ENCAP_PPoATM:
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call_dissector(llc_handle, tvb_new_subset(tvb, 16, -1, -1),
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pinfo, tree);
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break;
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case COSINE_ENCAP_PPP:
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call_dissector(ppp_hdlc_handle, tvb_new_subset(tvb, 4, -1, -1),
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pinfo, tree);
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break;
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case COSINE_ENCAP_HDLC:
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if (pseudo_header->cosine.direction == COSINE_DIR_TX) {
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call_dissector(chdlc_handle, tvb_new_subset(tvb, 2, -1, -1),
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pinfo, tree);
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} else if (pseudo_header->cosine.direction == COSINE_DIR_RX) {
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call_dissector(chdlc_handle, tvb_new_subset(tvb, 4, -1, -1),
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pinfo, tree);
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}
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break;
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case COSINE_ENCAP_FR:
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case COSINE_ENCAP_PPoFR:
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call_dissector(fr_handle, tvb_new_subset(tvb, 4, -1, -1),
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pinfo, tree);
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break;
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case COSINE_ENCAP_TEST:
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case COSINE_ENCAP_UNKNOWN:
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call_dissector(data_handle, tvb, pinfo, tree);
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break;
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default:
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break;
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}
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}
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void
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proto_register_cosine(void)
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{
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static hf_register_info hf[] = {
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{ &hf_pro,
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{ "Protocol", "cosine.pro", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
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{ &hf_off,
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{ "Offset", "cosine.off", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
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{ &hf_pri,
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{ "Priority", "cosine.pri", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
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{ &hf_rm,
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{ "Rate Marking", "cosine.rm", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
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{ &hf_err,
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{ "Error Code", "cosine.err", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
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};
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static gint *ett[] = {
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&ett_raw,
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};
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proto_cosine = proto_register_protocol("CoSine IPNOS L2 debug output",
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"CoSine", "cosine");
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proto_register_field_array(proto_cosine, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_cosine(void)
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{
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dissector_handle_t cosine_handle;
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/*
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* Get handles for dissectors.
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*/
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eth_withoutfcs_handle = find_dissector("eth_withoutfcs");
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ppp_hdlc_handle = find_dissector("ppp_hdlc");
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llc_handle = find_dissector("llc");
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chdlc_handle = find_dissector("chdlc");
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fr_handle = find_dissector("fr");
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data_handle = find_dissector("data");
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cosine_handle = create_dissector_handle(dissect_cosine, proto_cosine);
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dissector_add("wtap_encap", WTAP_ENCAP_COSINE, cosine_handle);
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}
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