![Alexis La Goutte](/assets/img/avatar_default.png)
(Using sed : sed -i '/^ \* \$Id\$/,+1 d') Fix manually some typo (in export_object_dicom.c and crc16-plain.c) Change-Id: I4c1ae68d1c4afeace8cb195b53c715cf9e1227a8 Reviewed-on: https://code.wireshark.org/review/497 Reviewed-by: Anders Broman <a.broman58@gmail.com>
501 lines
16 KiB
C
501 lines
16 KiB
C
/* packet-fddi.c
|
|
* Routines for FDDI packet disassembly
|
|
*
|
|
* ANSI Standard X3T9.5/88-139, Rev 4.0
|
|
*
|
|
* ISO Standards 9314-N (N = 1 for PHY, N = 2 for MAC, N = 6 for SMT, etc.)
|
|
*
|
|
* Laurent Deniel <laurent.deniel@free.fr>
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <glib.h>
|
|
|
|
#include <epan/packet.h>
|
|
#include <wsutil/bitswap.h>
|
|
#include <epan/prefs.h>
|
|
#include "packet-fddi.h"
|
|
#include "packet-llc.h"
|
|
#include <epan/tap.h>
|
|
|
|
#include <epan/addr_resolv.h>
|
|
|
|
void proto_register_fddi(void);
|
|
void proto_reg_handoff_fddi(void);
|
|
|
|
static int proto_fddi = -1;
|
|
static int hf_fddi_fc = -1;
|
|
static int hf_fddi_fc_clf = -1;
|
|
static int hf_fddi_fc_prio = -1;
|
|
static int hf_fddi_fc_smt_subtype = -1;
|
|
static int hf_fddi_fc_mac_subtype = -1;
|
|
static int hf_fddi_dst = -1;
|
|
static int hf_fddi_src = -1;
|
|
static int hf_fddi_addr = -1;
|
|
|
|
static gint ett_fddi = -1;
|
|
static gint ett_fddi_fc = -1;
|
|
|
|
static int fddi_tap = -1;
|
|
|
|
static gboolean fddi_padding = FALSE;
|
|
|
|
#define FDDI_PADDING ((fddi_padding) ? 3 : 0)
|
|
|
|
/* FDDI Frame Control values */
|
|
|
|
#define FDDI_FC_VOID 0x00 /* Void frame */
|
|
#define FDDI_FC_NRT 0x80 /* Nonrestricted token */
|
|
#define FDDI_FC_RT 0xc0 /* Restricted token */
|
|
#define FDDI_FC_MAC 0xc0 /* MAC frame */
|
|
#define FDDI_FC_SMT 0x40 /* SMT frame */
|
|
#define FDDI_FC_SMT_INFO 0x41 /* SMT Info */
|
|
#define FDDI_FC_SMT_NSA 0x4F /* SMT Next station adrs */
|
|
#define FDDI_FC_SMT_MIN FDDI_FC_SMT_INFO
|
|
#define FDDI_FC_SMT_MAX FDDI_FC_SMT_NSA
|
|
#define FDDI_FC_MAC_MIN 0xc1
|
|
#define FDDI_FC_MAC_BEACON 0xc2 /* MAC Beacon frame */
|
|
#define FDDI_FC_MAC_CLAIM 0xc3 /* MAC Claim frame */
|
|
#define FDDI_FC_MAC_MAX 0xcf
|
|
#define FDDI_FC_LLC_ASYNC 0x50 /* Async. LLC frame */
|
|
#define FDDI_FC_LLC_ASYNC_MIN FDDI_FC_LLC_ASYNC
|
|
#define FDDI_FC_LLC_ASYNC_DEF 0x54
|
|
#define FDDI_FC_LLC_ASYNC_MAX 0x5f
|
|
#define FDDI_FC_LLC_SYNC 0xd0 /* Sync. LLC frame */
|
|
#define FDDI_FC_LLC_SYNC_MIN FDDI_FC_LLC_SYNC
|
|
#define FDDI_FC_LLC_SYNC_MAX 0xd7
|
|
#define FDDI_FC_IMP_ASYNC 0x60 /* Implementor Async. */
|
|
#define FDDI_FC_IMP_ASYNC_MIN FDDI_FC_IMP_ASYNC
|
|
#define FDDI_FC_IMP_ASYNC_MAX 0x6f
|
|
#define FDDI_FC_IMP_SYNC 0xe0 /* Implementor Synch. */
|
|
|
|
#define FDDI_FC_CLFF 0xF0 /* Class/Length/Format bits */
|
|
#define FDDI_FC_ZZZZ 0x0F /* Control bits */
|
|
|
|
/*
|
|
* Async frame ZZZZ bits:
|
|
*/
|
|
#define FDDI_FC_ASYNC_R 0x08 /* Reserved */
|
|
#define FDDI_FC_ASYNC_PRI 0x07 /* Priority */
|
|
|
|
#define CLFF_BITS(fc) (((fc) & FDDI_FC_CLFF) >> 4)
|
|
#define ZZZZ_BITS(fc) ((fc) & FDDI_FC_ZZZZ)
|
|
|
|
static const value_string clf_vals[] = {
|
|
{ CLFF_BITS(FDDI_FC_VOID), "Void" },
|
|
{ CLFF_BITS(FDDI_FC_SMT), "SMT" },
|
|
{ CLFF_BITS(FDDI_FC_LLC_ASYNC), "Async LLC" },
|
|
{ CLFF_BITS(FDDI_FC_IMP_ASYNC), "Implementor Async" },
|
|
{ CLFF_BITS(FDDI_FC_NRT), "Nonrestricted Token" },
|
|
{ CLFF_BITS(FDDI_FC_MAC), "MAC" },
|
|
{ CLFF_BITS(FDDI_FC_LLC_SYNC), "Sync LLC" },
|
|
{ CLFF_BITS(FDDI_FC_IMP_SYNC), "Implementor Sync" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string smt_subtype_vals[] = {
|
|
{ ZZZZ_BITS(FDDI_FC_SMT_INFO), "Info" },
|
|
{ ZZZZ_BITS(FDDI_FC_SMT_NSA), "Next Station Address" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string mac_subtype_vals[] = {
|
|
{ ZZZZ_BITS(FDDI_FC_MAC_BEACON), "Beacon" },
|
|
{ ZZZZ_BITS(FDDI_FC_MAC_CLAIM), "Claim" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
#define FDDI_HEADER_SIZE 13
|
|
|
|
/* field positions */
|
|
|
|
#define FDDI_P_FC 0
|
|
#define FDDI_P_DHOST 1
|
|
#define FDDI_P_SHOST 7
|
|
|
|
static dissector_handle_t llc_handle;
|
|
static dissector_handle_t data_handle;
|
|
|
|
static void
|
|
swap_mac_addr(guint8 *swapped_addr, tvbuff_t *tvb, gint offset)
|
|
{
|
|
tvb_memcpy(tvb, swapped_addr, offset, 6);
|
|
bitswap_buf_inplace(swapped_addr, 6);
|
|
}
|
|
|
|
|
|
void
|
|
capture_fddi(const guchar *pd, int len, packet_counts *ld)
|
|
{
|
|
int offset = 0, fc;
|
|
|
|
if (!BYTES_ARE_IN_FRAME(0, len, FDDI_HEADER_SIZE + FDDI_PADDING)) {
|
|
ld->other++;
|
|
return;
|
|
}
|
|
offset = FDDI_PADDING + FDDI_HEADER_SIZE;
|
|
|
|
fc = (int) pd[FDDI_P_FC+FDDI_PADDING];
|
|
|
|
switch (fc) {
|
|
|
|
/* From now, only 802.2 SNAP (Async. LCC frame) is supported */
|
|
|
|
case FDDI_FC_LLC_ASYNC + 0 :
|
|
case FDDI_FC_LLC_ASYNC + 1 :
|
|
case FDDI_FC_LLC_ASYNC + 2 :
|
|
case FDDI_FC_LLC_ASYNC + 3 :
|
|
case FDDI_FC_LLC_ASYNC + 4 :
|
|
case FDDI_FC_LLC_ASYNC + 5 :
|
|
case FDDI_FC_LLC_ASYNC + 6 :
|
|
case FDDI_FC_LLC_ASYNC + 7 :
|
|
case FDDI_FC_LLC_ASYNC + 8 :
|
|
case FDDI_FC_LLC_ASYNC + 9 :
|
|
case FDDI_FC_LLC_ASYNC + 10 :
|
|
case FDDI_FC_LLC_ASYNC + 11 :
|
|
case FDDI_FC_LLC_ASYNC + 12 :
|
|
case FDDI_FC_LLC_ASYNC + 13 :
|
|
case FDDI_FC_LLC_ASYNC + 14 :
|
|
case FDDI_FC_LLC_ASYNC + 15 :
|
|
capture_llc(pd, offset, len, ld);
|
|
return;
|
|
default :
|
|
ld->other++;
|
|
return;
|
|
|
|
} /* fc */
|
|
|
|
} /* capture_fddi */
|
|
|
|
static const gchar *
|
|
fddifc_to_str(int fc)
|
|
{
|
|
static gchar strbuf[128+1];
|
|
|
|
switch (fc) {
|
|
|
|
case FDDI_FC_VOID: /* Void frame */
|
|
return "Void frame";
|
|
|
|
case FDDI_FC_NRT: /* Nonrestricted token */
|
|
return "Nonrestricted token";
|
|
|
|
case FDDI_FC_RT: /* Restricted token */
|
|
return "Restricted token";
|
|
|
|
case FDDI_FC_SMT_INFO: /* SMT Info */
|
|
return "SMT info";
|
|
|
|
case FDDI_FC_SMT_NSA: /* SMT Next station adrs */
|
|
return "SMT Next station address";
|
|
|
|
case FDDI_FC_MAC_BEACON: /* MAC Beacon frame */
|
|
return "MAC beacon";
|
|
|
|
case FDDI_FC_MAC_CLAIM: /* MAC Claim frame */
|
|
return "MAC claim token";
|
|
|
|
default:
|
|
switch (fc & FDDI_FC_CLFF) {
|
|
|
|
case FDDI_FC_MAC:
|
|
g_snprintf(strbuf, sizeof(strbuf), "MAC frame, control %x", fc & FDDI_FC_ZZZZ);
|
|
return strbuf;
|
|
|
|
case FDDI_FC_SMT:
|
|
g_snprintf(strbuf, sizeof(strbuf), "SMT frame, control %x", fc & FDDI_FC_ZZZZ);
|
|
return strbuf;
|
|
|
|
case FDDI_FC_LLC_ASYNC:
|
|
if (fc & FDDI_FC_ASYNC_R)
|
|
g_snprintf(strbuf, sizeof(strbuf), "Async LLC frame, control %x", fc & FDDI_FC_ZZZZ);
|
|
else
|
|
g_snprintf(strbuf, sizeof(strbuf), "Async LLC frame, priority %d",
|
|
fc & FDDI_FC_ASYNC_PRI);
|
|
return strbuf;
|
|
|
|
case FDDI_FC_LLC_SYNC:
|
|
if (fc & FDDI_FC_ZZZZ) {
|
|
g_snprintf(strbuf, sizeof(strbuf), "Sync LLC frame, control %x", fc & FDDI_FC_ZZZZ);
|
|
return strbuf;
|
|
} else
|
|
return "Sync LLC frame";
|
|
|
|
case FDDI_FC_IMP_ASYNC:
|
|
g_snprintf(strbuf, sizeof(strbuf), "Implementor async frame, control %x",
|
|
fc & FDDI_FC_ZZZZ);
|
|
return strbuf;
|
|
|
|
case FDDI_FC_IMP_SYNC:
|
|
g_snprintf(strbuf, sizeof(strbuf), "Implementor sync frame, control %x",
|
|
fc & FDDI_FC_ZZZZ);
|
|
return strbuf;
|
|
|
|
default:
|
|
return "Unknown frame type";
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_fddi(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
gboolean bitswapped)
|
|
{
|
|
proto_tree *fh_tree = NULL;
|
|
proto_item *ti, *hidden_item;
|
|
const gchar *fc_str;
|
|
proto_tree *fc_tree;
|
|
static guchar src[6], dst[6]; /* has to be static due to SET_ADDRESS */
|
|
guchar src_swapped[6], dst_swapped[6];
|
|
tvbuff_t *next_tvb;
|
|
static fddi_hdr fddihdrs[4];
|
|
static int fddihdr_num = 0;
|
|
fddi_hdr *fddihdr;
|
|
|
|
fddihdr_num++;
|
|
if (fddihdr_num >= 4) {
|
|
fddihdr_num = 0;
|
|
}
|
|
fddihdr = &fddihdrs[fddihdr_num];
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "FDDI");
|
|
|
|
fddihdr->fc = tvb_get_guint8(tvb, FDDI_P_FC + FDDI_PADDING);
|
|
fc_str = fddifc_to_str(fddihdr->fc);
|
|
|
|
col_add_str(pinfo->cinfo, COL_INFO, fc_str);
|
|
|
|
if (tree) {
|
|
ti = proto_tree_add_protocol_format(tree, proto_fddi, tvb, 0, FDDI_HEADER_SIZE+FDDI_PADDING,
|
|
"Fiber Distributed Data Interface, %s", fc_str);
|
|
fh_tree = proto_item_add_subtree(ti, ett_fddi);
|
|
ti = proto_tree_add_uint_format_value(fh_tree, hf_fddi_fc, tvb, FDDI_P_FC + FDDI_PADDING, 1, fddihdr->fc,
|
|
"0x%02x (%s)", fddihdr->fc, fc_str);
|
|
fc_tree = proto_item_add_subtree(ti, ett_fddi_fc);
|
|
proto_tree_add_uint(fc_tree, hf_fddi_fc_clf, tvb, FDDI_P_FC + FDDI_PADDING, 1, fddihdr->fc);
|
|
switch ((fddihdr->fc) & FDDI_FC_CLFF) {
|
|
|
|
case FDDI_FC_SMT:
|
|
proto_tree_add_uint(fc_tree, hf_fddi_fc_smt_subtype, tvb, FDDI_P_FC + FDDI_PADDING, 1, fddihdr->fc);
|
|
break;
|
|
|
|
case FDDI_FC_MAC:
|
|
if (fddihdr->fc != FDDI_FC_RT)
|
|
proto_tree_add_uint(fc_tree, hf_fddi_fc_mac_subtype, tvb, FDDI_P_FC + FDDI_PADDING, 1, fddihdr->fc);
|
|
break;
|
|
|
|
case FDDI_FC_LLC_ASYNC:
|
|
if (!((fddihdr->fc) & FDDI_FC_ASYNC_R))
|
|
proto_tree_add_uint(fc_tree, hf_fddi_fc_prio, tvb, FDDI_P_FC + FDDI_PADDING, 1, fddihdr->fc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Extract the destination address, possibly bit-swapping it. */
|
|
if (bitswapped)
|
|
swap_mac_addr(dst, tvb, FDDI_P_DHOST + FDDI_PADDING);
|
|
else
|
|
tvb_memcpy(tvb, dst, FDDI_P_DHOST + FDDI_PADDING, sizeof(dst));
|
|
swap_mac_addr(dst_swapped, tvb, FDDI_P_DHOST + FDDI_PADDING);
|
|
|
|
/* XXX - copy them to some buffer associated with "pi", rather than
|
|
just making "dst" static? */
|
|
SET_ADDRESS(&pinfo->dl_dst, AT_ETHER, 6, &dst[0]);
|
|
SET_ADDRESS(&pinfo->dst, AT_ETHER, 6, &dst[0]);
|
|
SET_ADDRESS(&fddihdr->dst, AT_ETHER, 6, &dst[0]);
|
|
|
|
if (fh_tree) {
|
|
proto_tree_add_ether(fh_tree, hf_fddi_dst, tvb, FDDI_P_DHOST + FDDI_PADDING, 6, dst);
|
|
hidden_item = proto_tree_add_ether(fh_tree, hf_fddi_addr, tvb, FDDI_P_DHOST + FDDI_PADDING, 6, dst);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
|
|
/* hide some bit-swapped mac address fields in the proto_tree, just in case */
|
|
hidden_item = proto_tree_add_ether(fh_tree, hf_fddi_dst, tvb, FDDI_P_DHOST + FDDI_PADDING, 6, dst_swapped);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
hidden_item = proto_tree_add_ether(fh_tree, hf_fddi_addr, tvb, FDDI_P_DHOST + FDDI_PADDING, 6, dst_swapped);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
}
|
|
|
|
/* Extract the source address, possibly bit-swapping it. */
|
|
if (bitswapped)
|
|
swap_mac_addr(src, tvb, FDDI_P_SHOST + FDDI_PADDING);
|
|
else
|
|
tvb_memcpy(tvb, src, FDDI_P_SHOST + FDDI_PADDING, sizeof(src));
|
|
swap_mac_addr(src_swapped, tvb, FDDI_P_SHOST + FDDI_PADDING);
|
|
|
|
/* XXX - copy them to some buffer associated with "pi", rather than
|
|
just making "src" static? */
|
|
SET_ADDRESS(&pinfo->dl_src, AT_ETHER, 6, &src[0]);
|
|
SET_ADDRESS(&pinfo->src, AT_ETHER, 6, &src[0]);
|
|
SET_ADDRESS(&fddihdr->src, AT_ETHER, 6, &src[0]);
|
|
|
|
if (fh_tree) {
|
|
proto_tree_add_ether(fh_tree, hf_fddi_src, tvb, FDDI_P_SHOST + FDDI_PADDING, 6, src);
|
|
hidden_item = proto_tree_add_ether(fh_tree, hf_fddi_addr, tvb, FDDI_P_SHOST + FDDI_PADDING, 6, src);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
|
|
/* hide some bit-swapped mac address fields in the proto_tree, just in case */
|
|
hidden_item = proto_tree_add_ether(fh_tree, hf_fddi_src, tvb, FDDI_P_SHOST + FDDI_PADDING, 6, src_swapped);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
hidden_item = proto_tree_add_ether(fh_tree, hf_fddi_addr, tvb, FDDI_P_SHOST + FDDI_PADDING, 6, src_swapped);
|
|
PROTO_ITEM_SET_HIDDEN(hidden_item);
|
|
}
|
|
|
|
next_tvb = tvb_new_subset_remaining(tvb, FDDI_HEADER_SIZE + FDDI_PADDING);
|
|
|
|
|
|
tap_queue_packet(fddi_tap, pinfo, fddihdr);
|
|
|
|
switch (fddihdr->fc) {
|
|
|
|
/* From now, only 802.2 SNAP (Async. LCC frame) is supported */
|
|
|
|
case FDDI_FC_LLC_ASYNC + 0 :
|
|
case FDDI_FC_LLC_ASYNC + 1 :
|
|
case FDDI_FC_LLC_ASYNC + 2 :
|
|
case FDDI_FC_LLC_ASYNC + 3 :
|
|
case FDDI_FC_LLC_ASYNC + 4 :
|
|
case FDDI_FC_LLC_ASYNC + 5 :
|
|
case FDDI_FC_LLC_ASYNC + 6 :
|
|
case FDDI_FC_LLC_ASYNC + 7 :
|
|
case FDDI_FC_LLC_ASYNC + 8 :
|
|
case FDDI_FC_LLC_ASYNC + 9 :
|
|
case FDDI_FC_LLC_ASYNC + 10 :
|
|
case FDDI_FC_LLC_ASYNC + 11 :
|
|
case FDDI_FC_LLC_ASYNC + 12 :
|
|
case FDDI_FC_LLC_ASYNC + 13 :
|
|
case FDDI_FC_LLC_ASYNC + 14 :
|
|
case FDDI_FC_LLC_ASYNC + 15 :
|
|
call_dissector(llc_handle, next_tvb, pinfo, tree);
|
|
return;
|
|
|
|
default :
|
|
call_dissector(data_handle,next_tvb, pinfo, tree);
|
|
return;
|
|
|
|
} /* fc */
|
|
} /* dissect_fddi */
|
|
|
|
|
|
static void
|
|
dissect_fddi_bitswapped(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_fddi(tvb, pinfo, tree, TRUE);
|
|
}
|
|
|
|
static void
|
|
dissect_fddi_not_bitswapped(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
dissect_fddi(tvb, pinfo, tree, FALSE);
|
|
}
|
|
|
|
void
|
|
proto_register_fddi(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
|
|
/*
|
|
* XXX - we want this guy to have his own private formatting
|
|
* routine, using "fc_to_str()"; if "fc_to_str()" returns
|
|
* NULL, just show the hex value, else show the string.
|
|
*/
|
|
{ &hf_fddi_fc,
|
|
{ "Frame Control", "fddi.fc", FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_fddi_fc_clf,
|
|
{ "Class/Length/Format", "fddi.fc.clf", FT_UINT8, BASE_HEX, VALS(clf_vals), FDDI_FC_CLFF,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_fddi_fc_prio,
|
|
{ "Priority", "fddi.fc.prio", FT_UINT8, BASE_DEC, NULL, FDDI_FC_ASYNC_PRI,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_fddi_fc_smt_subtype,
|
|
{ "SMT Subtype", "fddi.fc.smt_subtype", FT_UINT8, BASE_DEC, VALS(smt_subtype_vals), FDDI_FC_ZZZZ,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_fddi_fc_mac_subtype,
|
|
{ "MAC Subtype", "fddi.fc.mac_subtype", FT_UINT8, BASE_DEC, VALS(mac_subtype_vals), FDDI_FC_ZZZZ,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_fddi_dst,
|
|
{ "Destination", "fddi.dst", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
"Destination Hardware Address", HFILL }},
|
|
|
|
{ &hf_fddi_src,
|
|
{ "Source", "fddi.src", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_fddi_addr,
|
|
{ "Source or Destination Address", "fddi.addr", FT_ETHER, BASE_NONE, NULL, 0x0,
|
|
"Source or Destination Hardware Address", HFILL }},
|
|
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_fddi,
|
|
&ett_fddi_fc,
|
|
};
|
|
|
|
module_t *fddi_module;
|
|
|
|
proto_fddi = proto_register_protocol("Fiber Distributed Data Interface",
|
|
"FDDI", "fddi");
|
|
proto_register_field_array(proto_fddi, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/*
|
|
* Called from various dissectors for encapsulated FDDI frames.
|
|
* We assume the MAC addresses in them aren't bitswapped.
|
|
*/
|
|
register_dissector("fddi", dissect_fddi_not_bitswapped, proto_fddi);
|
|
|
|
fddi_module = prefs_register_protocol(proto_fddi, NULL);
|
|
prefs_register_bool_preference(fddi_module, "padding",
|
|
"Add 3-byte padding to all FDDI packets",
|
|
"Whether the FDDI dissector should add 3-byte padding to all "
|
|
"captured FDDI packets (useful with e.g. Tru64 UNIX tcpdump)",
|
|
&fddi_padding);
|
|
|
|
fddi_tap = register_tap("fddi");
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_fddi(void)
|
|
{
|
|
dissector_handle_t fddi_handle, fddi_bitswapped_handle;
|
|
|
|
/*
|
|
* Get a handle for the LLC dissector.
|
|
*/
|
|
llc_handle = find_dissector("llc");
|
|
data_handle = find_dissector("data");
|
|
|
|
fddi_handle = find_dissector("fddi");
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_FDDI, fddi_handle);
|
|
fddi_bitswapped_handle =
|
|
create_dissector_handle(dissect_fddi_bitswapped, proto_fddi);
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_FDDI_BITSWAPPED,
|
|
fddi_bitswapped_handle);
|
|
}
|