osmocom
/
wireshark
14
0
Fork 1
Code Issues Pull Requests Projects Releases Wiki Activity
wireshark/packet-atm.c

547 lines
16 KiB
C
Raw Blame History

/* packet-atm.c
* Routines for ATM packet disassembly
*
* $Id: packet-atm.c,v 1.1 1999/08/20 06:55:05 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.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
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <stdio.h>
#include <glib.h>
#include "packet.h"
#include "resolv.h"
static int proto_atm = -1;
static int proto_atm_lane = -1;
/*
* See
*
* http://www.atmforum.org/atmforum/specs/approved.html
*
* for a number of ATM Forum specifications, e.g. the LAN Emulation
* over ATM 1.0 spec, whence I got most of this.
*/
/* LE Control opcodes */
#define LE_CONFIGURE_REQUEST 0x0001
#define LE_CONFIGURE_RESPONSE 0x0101
#define LE_JOIN_REQUEST 0x0002
#define LE_JOIN_RESPONSE 0x0102
#define READY_QUERY 0x0003
#define READY_IND 0x0103
#define LE_REGISTER_REQUEST 0x0004
#define LE_REGISTER_RESPONSE 0x0104
#define LE_UNREGISTER_REQUEST 0x0005
#define LE_UNREGISTER_RESPONSE 0x0105
#define LE_ARP_REQUEST 0x0006
#define LE_ARP_RESPONSE 0x0106
#define LE_FLUSH_REQUEST 0x0007
#define LE_FLUSH_RESPONSE 0x0107
#define LE_NARP_REQUEST 0x0008
#define LE_TOPOLOGY_REQUEST 0x0009
static const value_string le_control_opcode_vals[] = {
{ LE_CONFIGURE_REQUEST, "LE_CONFIGURE_REQUEST" },
{ LE_CONFIGURE_RESPONSE, "LE_CONFIGURE_RESPONSE" },
{ LE_JOIN_REQUEST, "LE_JOIN_REQUEST" },
{ LE_JOIN_RESPONSE, "LE_JOIN_RESPONSE" },
{ READY_QUERY, "READY_QUERY" },
{ READY_IND, "READY_IND" },
{ LE_REGISTER_REQUEST, "LE_REGISTER_REQUEST" },
{ LE_REGISTER_RESPONSE, "LE_REGISTER_RESPONSE" },
{ LE_UNREGISTER_REQUEST, "LE_UNREGISTER_REQUEST" },
{ LE_UNREGISTER_RESPONSE, "LE_UNREGISTER_RESPONSE" },
{ LE_ARP_REQUEST, "LE_ARP_REQUEST" },
{ LE_ARP_RESPONSE, "LE_ARP_RESPONSE" },
{ LE_FLUSH_REQUEST, "LE_FLUSH_REQUEST" },
{ LE_FLUSH_RESPONSE, "LE_FLUSH_RESPONSE" },
{ LE_NARP_REQUEST, "LE_NARP_REQUEST" },
{ LE_TOPOLOGY_REQUEST, "LE_TOPOLOGY_REQUEST" },
{ 0, NULL }
};
/* LE Control statuses */
static const value_string le_control_status_vals[] = {
{ 0, "Success" },
{ 1, "Version not supported" },
{ 2, "Invalid request parameters" },
{ 4, "Duplicate LAN destination registration" },
{ 5, "Duplicate ATM address" },
{ 6, "Insufficient resources to grant request" },
{ 7, "Access denied" },
{ 8, "Invalid REQUESTOR-ID" },
{ 9, "Invalid LAN destination" },
{ 10, "Invalid ATM address" },
{ 20, "No configuraton" },
{ 21, "LE_CONFIGURE error" },
{ 22, "Insufficient information" },
{ 0, NULL }
};
/* LE Control LAN destination tags */
#define TAG_NOT_PRESENT 0x0000
#define TAG_MAC_ADDRESS 0x0001
#define TAG_ROUTE_DESCRIPTOR 0x0002
static const value_string le_control_landest_tag_vals[] = {
{ TAG_NOT_PRESENT, "Not present" },
{ TAG_MAC_ADDRESS, "MAC address" },
{ TAG_ROUTE_DESCRIPTOR, "Route descriptor" },
{ 0, NULL }
};
/* LE Control LAN types */
#define LANT_UNSPEC 0x00
#define LANT_802_3 0x01
#define LANT_802_5 0x02
static const value_string le_control_lan_type_vals[] = {
{ LANT_UNSPEC, "Unspecified" },
{ LANT_802_3, "Ethernet/802.3" },
{ LANT_802_5, "802.5" },
{ 0, NULL }
};
static void
dissect_le_client(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
proto_item *ti;
proto_tree *lane_tree;
if (tree) {
ti = proto_tree_add_item_format(tree, proto_atm_lane, offset, 2, NULL,
"ATM LANE");
lane_tree = proto_item_add_subtree(ti, ETT_ATM_LANE);
proto_tree_add_text(lane_tree, offset, 2, "LE Client: 0x%04X",
pntohs(&pd[offset]));
}
}
static void
dissect_lan_destination(const u_char *pd, int offset, const char *type, proto_tree *tree)
{
proto_item *td;
proto_tree *dest_tree;
guint16 tag;
proto_item *trd;
proto_tree *rd_tree;
guint16 route_descriptor;
td = proto_tree_add_text(tree, offset, 8, "%s LAN destination",
type);
dest_tree = proto_item_add_subtree(td, ETT_ATM_LANE_LC_LAN_DEST);
tag = pntohs(&pd[offset]);
proto_tree_add_text(dest_tree, offset, 2, "Tag: %s",
val_to_str(tag, le_control_landest_tag_vals,
"Unknown (%x)"));
offset += 2;
switch (tag) {
case TAG_MAC_ADDRESS:
proto_tree_add_text(dest_tree, offset, 6, "MAC address: %s",
ether_to_str((u_char *)&pd[offset]));
break;
case TAG_ROUTE_DESCRIPTOR:
offset += 4;
route_descriptor = pntohs(&pd[offset]);
trd = proto_tree_add_text(dest_tree, offset, 2, "Route descriptor: 0x%02X",
route_descriptor);
rd_tree = proto_item_add_subtree(td, ETT_ATM_LANE_LC_LAN_DEST_RD);
proto_tree_add_text(rd_tree, offset, 2,
decode_numeric_bitfield(route_descriptor, 0xFFF0, 2*8,
"LAN ID = %u"));
proto_tree_add_text(rd_tree, offset, 2,
decode_numeric_bitfield(route_descriptor, 0x000F, 2*8,
"Bridge number = %u"));
break;
}
}
static void
dissect_le_control(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
proto_item *ti;
proto_tree *lane_tree;
proto_item *tf;
proto_tree *flags_tree;
guint16 opcode;
guint16 flags;
if (check_col(fd, COL_INFO))
col_add_str(fd, COL_INFO, "LE Control");
if (tree) {
ti = proto_tree_add_item_format(tree, proto_atm_lane, offset, 108, NULL,
"ATM LANE");
lane_tree = proto_item_add_subtree(ti, ETT_ATM_LANE);
proto_tree_add_text(lane_tree, offset, 2, "Marker: 0x%04X",
pntohs(&pd[offset]));
offset += 2;
proto_tree_add_text(lane_tree, offset, 1, "Protocol: 0x%02X",
pd[offset]);
offset += 1;
proto_tree_add_text(lane_tree, offset, 1, "Version: 0x%02X",
pd[offset]);
offset += 1;
opcode = pntohs(&pd[offset]);
proto_tree_add_text(lane_tree, offset, 2, "Opcode: %s",
val_to_str(opcode, le_control_opcode_vals,
"Unknown (%x)"));
offset += 2;
if (opcode == READY_QUERY || opcode == READY_IND) {
/* There's nothing more in this packet. */
return;
}
if (opcode & 0x0100) {
/* Response; decode status. */
proto_tree_add_text(lane_tree, offset, 2, "Status: %s",
val_to_str(pntohs(&pd[offset]), le_control_status_vals,
"Unknown (%x)"));
}
offset += 2;
proto_tree_add_text(lane_tree, offset, 4, "Transaction ID: 0x%08X",
pntohl(&pd[offset]));
offset += 4;
proto_tree_add_text(lane_tree, offset, 2, "Requester LECID: 0x%04X",
pntohs(&pd[offset]));
offset += 2;
flags = pntohs(&pd[offset]);
tf = proto_tree_add_text(lane_tree, offset, 2, "Flags: 0x%04X",
pntohs(&pd[offset]));
flags_tree = proto_item_add_subtree(tf, ETT_ATM_LANE_LC_FLAGS);
proto_tree_add_text(flags_tree, offset, 2, "%s",
decode_boolean_bitfield(flags, 0x0001, 8*2,
"Remote address", "Local address"));
proto_tree_add_text(flags_tree, offset, 2, "%s",
decode_boolean_bitfield(flags, 0x0080, 8*2,
"Proxy", "Not proxy"));
proto_tree_add_text(flags_tree, offset, 2, "%s",
decode_boolean_bitfield(flags, 0x0100, 8*2,
"Topology change", "No topology change"));
offset += 2;
dissect_lan_destination(pd, offset, "Source", lane_tree);
offset += 8;
dissect_lan_destination(pd, offset, "Target", lane_tree);
offset += 8;
proto_tree_add_text(lane_tree, offset, 20, "Source ATM Address: %s",
bytes_to_str(&pd[offset], 20));
offset += 20;
proto_tree_add_text(lane_tree, offset, 1, "LAN type: %s",
val_to_str(pd[offset], le_control_lan_type_vals,
"Unknown (%x)"));
offset += 1;
proto_tree_add_text(lane_tree, offset, 1, "Maximum frame size: %u",
pd[offset]);
offset += 1;
proto_tree_add_text(lane_tree, offset, 1, "Number of TLVs: %u",
pd[offset]);
offset += 1;
proto_tree_add_text(lane_tree, offset, 1, "ELAN name size: %u",
pd[offset]);
offset += 1;
proto_tree_add_text(lane_tree, offset, 20, "Target ATM Address: %s",
bytes_to_str(&pd[offset], 20));
offset += 20;
proto_tree_add_text(lane_tree, offset, 32, "ELAN name: %s",
bytes_to_str(&pd[offset], 32));
offset += 32;
}
}
static void
dissect_lane(const u_char *pd, int offset, frame_data *fd, proto_tree *tree)
{
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "ATM LANE");
if (check_col(fd, COL_INFO))
col_add_str(fd, COL_INFO, "ATM LANE");
/* Is it LE Control, 802.3, 802.5, or "none of the above"? */
switch (fd->pseudo_header.ngsniffer_atm.AppHLType) {
case AHLT_LANE_LE_CTRL:
dissect_le_control(pd, offset, fd, tree);
break;
case AHLT_LANE_802_3:
case AHLT_LANE_802_3_MC:
dissect_le_client(pd, offset, fd, tree);
offset += 2;
/* Dissect as Ethernet */
dissect_eth(pd, offset, fd, tree);
break;
case AHLT_LANE_802_5:
case AHLT_LANE_802_5_MC:
dissect_le_client(pd, offset, fd, tree);
offset += 2;
/* Dissect as Token-Ring */
dissect_tr(pd, offset, fd, tree);
break;
default:
/* Dump it as raw data. */
dissect_data(pd, offset, fd, tree);
break;
}
}
/* AAL types */
static const value_string aal_vals[] = {
{ ATT_AAL_UNKNOWN, "Unknown AAL" },
{ ATT_AAL1, "AAL1" },
{ ATT_AAL3_4, "AAL3/4" },
{ ATT_AAL5, "AAL5" },
{ ATT_AAL_USER, "User AAL" },
{ ATT_AAL_SIGNALLING, "Signalling AAL" },
{ ATT_OAMCELL, "OAM cell" },
{ 0, NULL }
};
/* AAL5 higher-level traffic types */
static const value_string aal5_hltype_vals[] = {
{ ATT_HL_UNKNOWN, "Unknown traffic type" },
{ ATT_HL_LLCMX, "LLC multiplexed" },
{ ATT_HL_VCMX, "VC multiplexed" },
{ ATT_HL_LANE, "LANE" },
{ ATT_HL_ILMI, "ILMI" },
{ ATT_HL_FRMR, "Frame Relay" },
{ ATT_HL_SPANS, "FORE SPANS" },
{ ATT_HL_IPSILON, "Ipsilon" },
{ 0, NULL }
};
/* Traffic subtypes for VC multiplexed traffic */
static const value_string vcmx_type_vals[] = {
{ AHLT_UNKNOWN, "Unknown VC multiplexed traffic type" },
{ AHLT_VCMX_802_3_FCS, "802.3 FCS" },
{ AHLT_VCMX_802_4_FCS, "802.4 FCS" },
{ AHLT_VCMX_802_5_FCS, "802.5 FCS" },
{ AHLT_VCMX_FDDI_FCS, "FDDI FCS" },
{ AHLT_VCMX_802_6_FCS, "802.6 FCS" },
{ AHLT_VCMX_802_3, "802.3" },
{ AHLT_VCMX_802_4, "802.4" },
{ AHLT_VCMX_802_5, "802.5" },
{ AHLT_VCMX_FDDI, "FDDI" },
{ AHLT_VCMX_802_6, "802.6" },
{ AHLT_VCMX_FRAGMENTS, "Fragments" },
{ AHLT_VCMX_BPDU, "BPDU" },
{ 0, NULL }
};
/* Traffic subtypes for LANE traffic */
static const value_string lane_type_vals[] = {
{ AHLT_UNKNOWN, "Unknown LANE traffic type" },
{ AHLT_LANE_LE_CTRL, "LE Control" },
{ AHLT_LANE_802_3, "802.3" },
{ AHLT_LANE_802_5, "802.5" },
{ AHLT_LANE_802_3_MC, "802.3 multicast" },
{ AHLT_LANE_802_5_MC, "802.5 multicast" },
{ 0, NULL }
};
/* Traffic subtypes for Ipsilon traffic */
static const value_string ipsilon_type_vals[] = {
{ AHLT_UNKNOWN, "Unknown Ipsilon traffic type" },
{ AHLT_IPSILON_FT0, "Flow type 0" },
{ AHLT_IPSILON_FT1, "Flow type 1" },
{ AHLT_IPSILON_FT2, "Flow type 2" },
{ 0, NULL }
};
void
dissect_atm(const u_char *pd, frame_data *fd, proto_tree *tree)
{
int offset = 0;
proto_tree *atm_tree;
proto_item *ti;
guint aal_type;
guint hl_type;
aal_type = fd->pseudo_header.ngsniffer_atm.AppTrafType & ATT_AALTYPE;
hl_type = fd->pseudo_header.ngsniffer_atm.AppTrafType & ATT_HLTYPE;
if (check_col(fd, COL_PROTOCOL))
col_add_str(fd, COL_PROTOCOL, "ATM");
switch (fd->pseudo_header.ngsniffer_atm.channel) {
case 0:
/* Traffic from DCE to DTE. */
if (check_col(fd, COL_RES_DL_DST))
col_add_str(fd, COL_RES_DL_DST, "DTE");
if (check_col(fd, COL_RES_DL_SRC))
col_add_str(fd, COL_RES_DL_SRC, "DCE");
break;
case 1:
/* Traffic from DTE to DCE. */
if (check_col(fd, COL_RES_DL_DST))
col_add_str(fd, COL_RES_DL_DST, "DCE");
if (check_col(fd, COL_RES_DL_SRC))
col_add_str(fd, COL_RES_DL_SRC, "DTE");
break;
}
if (check_col(fd, COL_INFO)) {
if (aal_type == ATT_AAL5) {
col_add_fstr(fd, COL_INFO, "AAL5 %s",
val_to_str(hl_type, aal5_hltype_vals,
"Unknown traffic type (%x)"));
} else {
col_add_str(fd, COL_INFO,
val_to_str(aal_type, aal_vals, "Unknown AAL (%x)"));
}
}
if (tree) {
ti = proto_tree_add_item_format(tree, proto_atm, 0, 0, NULL,
"ATM");
atm_tree = proto_item_add_subtree(ti, ETT_ATM);
proto_tree_add_text(atm_tree, 0, 0, "AAL: %s",
val_to_str(aal_type, aal_vals, "Unknown AAL (%x)"));
if (aal_type == ATT_AAL5) {
proto_tree_add_text(atm_tree, 0, 0, "Traffic type: %s",
val_to_str(hl_type, aal5_hltype_vals, "Unknown AAL5 traffic type (%x)"));
}
if (aal_type == ATT_AAL5) {
switch (hl_type) {
case ATT_HL_VCMX:
proto_tree_add_text(atm_tree, 0, 0, "VC multiplexed traffic type: %s",
val_to_str(fd->pseudo_header.ngsniffer_atm.AppHLType,
vcmx_type_vals, "Unknown VCMX traffic type (%x)"));
break;
case ATT_HL_LANE:
proto_tree_add_text(atm_tree, 0, 0, "LANE traffic type: %s",
val_to_str(fd->pseudo_header.ngsniffer_atm.AppHLType,
lane_type_vals, "Unknown LANE traffic type (%x)"));
break;
case ATT_HL_IPSILON:
proto_tree_add_text(atm_tree, 0, 0, "Ipsilon traffic type: %s",
val_to_str(fd->pseudo_header.ngsniffer_atm.AppHLType,
ipsilon_type_vals, "Unknown Ipsilon traffic type (%x)"));
break;
}
}
proto_tree_add_text(atm_tree, 0, 0, "VPI: %u",
fd->pseudo_header.ngsniffer_atm.Vpi);
proto_tree_add_text(atm_tree, 0, 0, "VCI: %u",
fd->pseudo_header.ngsniffer_atm.Vci);
switch (fd->pseudo_header.ngsniffer_atm.channel) {
case 0:
/* Traffic from DCE to DTE. */
proto_tree_add_text(atm_tree, 0, 0, "Channel: DCE->DTE");
break;
case 1:
/* Traffic from DTE to DCE. */
proto_tree_add_text(atm_tree, 0, 0, "Channel: DTE->DCE");
break;
default:
/* Sniffers shouldn't provide anything other than 0 or 1. */
proto_tree_add_text(atm_tree, 0, 0, "Channel: %u",
fd->pseudo_header.ngsniffer_atm.channel);
break;
}
proto_tree_add_text(atm_tree, 0, 0, "Cells: %u",
fd->pseudo_header.ngsniffer_atm.cells);
if (aal_type == ATT_AAL5) {
proto_tree_add_text(atm_tree, 0, 0, "AAL5 U2U: %u",
fd->pseudo_header.ngsniffer_atm.aal5t_u2u);
proto_tree_add_text(atm_tree, 0, 0, "AAL5 len: %u",
fd->pseudo_header.ngsniffer_atm.aal5t_len);
proto_tree_add_text(atm_tree, 0, 0, "AAL5 checksum: 0x%08X",
fd->pseudo_header.ngsniffer_atm.aal5t_chksum);
}
}
if (aal_type == ATT_AAL5) {
switch (hl_type) {
#if 0
case ATT_HL_LLCMX:
/* Dissect as WTAP_ENCAP_ATM_RFC1483 */
break;
#endif
case ATT_HL_LANE:
dissect_lane(pd, offset, fd, tree);
break;
default:
if (tree) {
/* Dump it as raw data. */
dissect_data(pd, offset, fd, tree);
break;
}
}
} else {
if (tree) {
/* Dump it as raw data. (Is this a single cell?) */
dissect_data(pd, offset, fd, tree);
}
}
}
void
proto_register_atm(void)
{
proto_atm = proto_register_protocol("ATM", "atm");
proto_atm_lane = proto_register_protocol("ATM LANE", "lane");
}
Reference in New Issue View Git Blame Copy Permalink