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/* packet-cosine.c
* Routines for decoding CoSine IPNOS L2 debug output
*
* $Id: packet-cosine.c,v 1.4 2002/08/28 21:00:08 jmayer Exp $
*
* Motonori Shindo <mshindo@mshindo.net>
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
*
* 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.
*/
/*
* XXX TODO:
* o PPoATM and PPoFR encapsulation needs more test.
*
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <glib.h>
#include <string.h>
#include <epan/packet.h>
static int proto_cosine = -1;
static int hf_pro = -1;
static int hf_off = -1;
static int hf_pri = -1;
static int hf_rm = -1;
static int hf_err = -1;
static gint ett_raw = -1;
static dissector_handle_t eth_handle;
static dissector_handle_t ppp_hdlc_handle;
static dissector_handle_t llc_handle;
static dissector_handle_t chdlc_handle;
static dissector_handle_t fr_handle;
static dissector_handle_t data_handle;
static void
dissect_cosine(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *fh_tree;
proto_item *ti;
union wtap_pseudo_header *pseudo_header = pinfo->pseudo_header;
/* load the top pane info. This should be overwritten by
the next protocol in the stack */
if(check_col(pinfo->cinfo, COL_RES_DL_SRC))
col_set_str(pinfo->cinfo, COL_RES_DL_SRC, "N/A" );
if(check_col(pinfo->cinfo, COL_RES_DL_DST))
col_set_str(pinfo->cinfo, COL_RES_DL_DST, "N/A" );
if(check_col(pinfo->cinfo, COL_PROTOCOL))
col_set_str(pinfo->cinfo, COL_PROTOCOL, "N/A" );
if(check_col(pinfo->cinfo, COL_INFO))
col_set_str(pinfo->cinfo, COL_INFO, "CoSine IPNOS L2 debug output" );
/* populate a tree in the second pane with the status of the link
layer (ie none) */
if(tree) {
ti = proto_tree_add_protocol_format(tree, proto_cosine, tvb, 0, 4,
"CoSine IPNOS L2 debug output (%s)",
pseudo_header->cosine.if_name);
fh_tree = proto_item_add_subtree(ti, ett_raw);
proto_tree_add_uint(fh_tree, hf_pro, tvb, 0, 0, pseudo_header->cosine.pro);
proto_tree_add_uint(fh_tree, hf_off, tvb, 0, 0, pseudo_header->cosine.off);
proto_tree_add_uint(fh_tree, hf_pri, tvb, 0, 0, pseudo_header->cosine.pri);
proto_tree_add_uint(fh_tree, hf_rm, tvb, 0, 0, pseudo_header->cosine.rm);
proto_tree_add_uint(fh_tree, hf_err, tvb, 0, 0, pseudo_header->cosine.err);
switch (pseudo_header->cosine.encap) {
case COSINE_ENCAP_ETH:
break;
case COSINE_ENCAP_ATM:
case COSINE_ENCAP_PPoATM:
proto_tree_add_text(fh_tree, tvb, 0, 16, "SAR header");
break;
case COSINE_ENCAP_PPP:
case COSINE_ENCAP_FR:
case COSINE_ENCAP_PPoFR:
proto_tree_add_text(fh_tree, tvb, 0, 4, "Channel handle ID");
break;
case COSINE_ENCAP_HDLC:
if (pseudo_header->cosine.direction == COSINE_DIR_TX) {
proto_tree_add_text(fh_tree, tvb, 0, 2,
"Channel handle ID");
} else if (pseudo_header->cosine.direction == COSINE_DIR_RX) {
proto_tree_add_text(fh_tree, tvb, 0, 4,
"Channel handle ID");
}
break;
default:
break;
}
}
switch (pseudo_header->cosine.encap) {
case COSINE_ENCAP_ETH:
call_dissector(eth_handle, tvb_new_subset(tvb, 0, -1, -1),
pinfo, tree);
break;
case COSINE_ENCAP_ATM:
case COSINE_ENCAP_PPoATM:
call_dissector(llc_handle, tvb_new_subset(tvb, 16, -1, -1),
pinfo, tree);
break;
case COSINE_ENCAP_PPP:
call_dissector(ppp_hdlc_handle, tvb_new_subset(tvb, 4, -1, -1),
pinfo, tree);
break;
case COSINE_ENCAP_HDLC:
if (pseudo_header->cosine.direction == COSINE_DIR_TX) {
call_dissector(chdlc_handle, tvb_new_subset(tvb, 2, -1, -1),
pinfo, tree);
} else if (pseudo_header->cosine.direction == COSINE_DIR_RX) {
call_dissector(chdlc_handle, tvb_new_subset(tvb, 4, -1, -1),
pinfo, tree);
}
break;
case COSINE_ENCAP_FR:
case COSINE_ENCAP_PPoFR:
call_dissector(fr_handle, tvb_new_subset(tvb, 4, -1, -1),
pinfo, tree);
break;
case COSINE_ENCAP_TEST:
case COSINE_ENCAP_UNKNOWN:
call_dissector(data_handle, tvb, pinfo, tree);
break;
default:
break;
}
}
void
proto_register_cosine(void)
{
static hf_register_info hf[] = {
{ &hf_pro,
{ "Protocol", "cosine.pro", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
{ &hf_off,
{ "Offset", "cosine.off", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
{ &hf_pri,
{ "Priority", "cosine.pri", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
{ &hf_rm,
{ "Rate Marking", "cosine.rm", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
{ &hf_err,
{ "Error Code", "cosine.err", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL}},
};
static gint *ett[] = {
&ett_raw,
};
proto_cosine = proto_register_protocol("CoSine IPNOS L2 debug output",
"CoSine", "cosine");
proto_register_field_array(proto_cosine, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_cosine(void)
{
dissector_handle_t cosine_handle;
/*
* Get handles for dissectors.
*/
eth_handle = find_dissector("eth");
ppp_hdlc_handle = find_dissector("ppp_hdlc");
llc_handle = find_dissector("llc");
chdlc_handle = find_dissector("chdlc");
fr_handle = find_dissector("fr");
data_handle = find_dissector("data");
cosine_handle = create_dissector_handle(dissect_cosine, proto_cosine);
dissector_add("wtap_encap", WTAP_ENCAP_COSINE, cosine_handle);
}
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