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/* packet-ipoib.c
* Routines for decoding IP over InfiniBand (IPoIB) packet disassembly
* See: http://tools.ietf.org/html/rfc4391#section-6
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* 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 <glib.h>
#include <epan/packet.h>
#include <epan/etypes.h>
static int proto_ipoib = -1;
static int hf_type = -1;
static int hf_reserved = -1;
static gint ett_raw = -1;
static dissector_handle_t arp_handle;
static dissector_handle_t ip_handle;
static dissector_handle_t ipv6_handle;
static void
dissect_ipoib(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_tree *fh_tree;
proto_item *ti;
tvbuff_t *next_tvb;
guint16 type;
/* load the top pane info. This should be overwritten by
the next protocol in the stack */
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPoIB");
col_set_str(pinfo->cinfo, COL_INFO, "IP over Infiniband");
/* populate a tree in the second pane with the IPoIB header data */
if (tree) {
ti = proto_tree_add_item (tree, proto_ipoib, tvb, 0, 4, ENC_NA);
fh_tree = proto_item_add_subtree(ti, ett_raw);
proto_tree_add_item(fh_tree, hf_type, tvb, 0, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(fh_tree, hf_reserved, tvb, 2, 2, ENC_BIG_ENDIAN);
}
next_tvb = tvb_new_subset_remaining(tvb, 4);
type = tvb_get_ntohs(tvb, 0);
switch (type) {
case ETHERTYPE_IP:
call_dissector(ip_handle, next_tvb, pinfo, tree);
break;
case ETHERTYPE_IPv6:
call_dissector(ipv6_handle, next_tvb, pinfo, tree);
break;
case ETHERTYPE_ARP:
case ETHERTYPE_REVARP:
call_dissector(arp_handle, next_tvb, pinfo, tree);
break;
default:
break;
}
}
void
proto_register_ipoib(void)
{
static hf_register_info hf[] = {
{ &hf_type,
{ "Type", "ipoib.type",
FT_UINT16, BASE_HEX, VALS(etype_vals), 0x0,
NULL, HFILL }},
{ &hf_reserved,
{ "Reserved", "ipoib.reserved",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }}
};
static gint *ett[] = {
&ett_raw
};
proto_ipoib = proto_register_protocol("IP over Infiniband", "IPoIB", "ipoib");
proto_register_field_array(proto_ipoib, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_ipoib(void)
{
dissector_handle_t ipoib_handle;
/*
* Get handles for the ARP, IP and IPv6 dissectors.
*/
arp_handle = find_dissector("arp");
ip_handle = find_dissector("ip");
ipv6_handle = find_dissector("ipv6");
ipoib_handle = create_dissector_handle(dissect_ipoib, proto_ipoib);
dissector_add_uint("wtap_encap", WTAP_ENCAP_IP_OVER_IB, ipoib_handle);
}
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