epan/dissectors/packet-ismp.c

   1 /* packet-ismp.c
   2  * Routines for ISMP dissection
   3  * Enterasys Networks Home: http://www.enterasys.com/
   4  * Copyright 2003, Joshua Craig Douglas <jdouglas@enterasys.com>
   5  *
   6  * $Id$
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 1998 Gerald Combs
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  25  */
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include <stdlib.h>
  32
  33 #include <glib.h>
  34
  35 #include <epan/packet.h>
  36 #include <epan/strutil.h>
  37 #include <epan/etypes.h>
  38
  39
  40 /* Initialize the protocol and registered fields */
  41 static int proto_ismp = -1;
  42 static int hf_ismp_version = -1;
  43 static int hf_ismp_message_type = -1;
  44 static int hf_ismp_seq_num = -1;
  45 static int hf_ismp_code_length = -1;
  46 static int hf_ismp_auth_data = -1;
  47
  48 /* Enterasys/Cabletron Dicovery Protocol fields*/
  49 static int hf_ismp_edp = -1;
  50 static int hf_ismp_edp_version = -1;
  51 static int hf_ismp_edp_module_ip = -1;
  52 static int hf_ismp_edp_module_mac = -1;
  53 static int hf_ismp_edp_module_port = -1;
  54 static int hf_ismp_edp_chassis_mac =-1;
  55 static int hf_ismp_edp_chassis_ip = -1;
  56 static int hf_ismp_edp_device_type = -1;
  57 static int hf_ismp_edp_module_rev = -1;
  58 static int hf_ismp_edp_options = -1;
  59 static int hf_ismp_edp_sfs_option_unused1 = -1;
  60 static int hf_ismp_edp_sfs_option_sfssup = -1;
  61 static int hf_ismp_edp_sfs_option_lsp = -1;
  62 static int hf_ismp_edp_sfs_option_flood = -1;
  63 static int hf_ismp_edp_sfs_option_resolve = -1;
  64 static int hf_ismp_edp_sfs_option_unused2 = -1;
  65 static int hf_ismp_edp_sfs_option_tagflood = -1;
  66 static int hf_ismp_edp_sfs_option_calltap = -1;
  67 static int hf_ismp_edp_sfs_option_conmsg = -1;
  68 static int hf_ismp_edp_sfs_option_redun = -1;
  69 static int hf_ismp_edp_sfs_option_isolated = -1;
  70 static int hf_ismp_edp_sfs_option_uplink_switch = -1;
  71 static int hf_ismp_edp_sfs_option_uplink_core = -1;
  72 static int hf_ismp_edp_sfs_option_uplink_port = -1;
  73 static int hf_ismp_edp_sfs_option_uplink_flood = -1;
  74 static int hf_ismp_edp_rtr_option_ssr = -1;
  75 static int hf_ismp_edp_rtr_option_igmp = -1;
  76 static int hf_ismp_edp_rtr_option_rip = -1;
  77 static int hf_ismp_edp_rtr_option_bgp = -1;
  78 static int hf_ismp_edp_rtr_option_ospf = -1;
  79 static int hf_ismp_edp_rtr_option_dvmrp = -1;
  80 static int hf_ismp_edp_rtr_option_8021q = -1;
  81 static int hf_ismp_edp_rtr_option_gvrp = -1;
  82 static int hf_ismp_edp_rtr_option_gmrp = -1;
  83 static int hf_ismp_edp_rtr_option_igmp_snoop = -1;
  84 static int hf_ismp_edp_rtr_option_route = -1;
  85 static int hf_ismp_edp_rtr_option_trans = -1;
  86 static int hf_ismp_edp_rtr_option_level1 = -1;
  87 static int hf_ismp_edp_switch_option_8021q = -1;
  88 static int hf_ismp_edp_switch_option_gvrp = -1;
  89 static int hf_ismp_edp_switch_option_gmrp = -1;
  90 static int hf_ismp_edp_switch_option_igmp = -1;
  91 static int hf_ismp_edp_switch_option_route = -1;
  92 static int hf_ismp_edp_switch_option_trans = -1;
  93 static int hf_ismp_edp_switch_option_level1 = -1;
  94 static int hf_ismp_edp_end_station_option_dhcp = -1;
  95 static int hf_ismp_edp_end_station_option_dns = -1;
  96 static int hf_ismp_edp_end_station_option_ad = -1;
  97 static int hf_ismp_edp_num_neighbors = -1;
  98 static int hf_ismp_edp_neighbors = -1;
  99 static int hf_ismp_edp_num_tuples = -1;
 100 static int hf_ismp_edp_tuples = -1;
 101
 102
 103 /* Initialize the subtree pointers */
 104 static gint ett_ismp = -1;
 105 static gint ett_ismp_edp = -1;
 106 static gint ett_ismp_edp_options = -1;
 107 static gint ett_ismp_edp_neighbors = -1;
 108 static gint ett_ismp_edp_neighbors_leaf = -1;
 109 static gint ett_ismp_edp_tuples = -1;
 110 static gint ett_ismp_edp_tuples_leaf = -1;
 111
 112 /* ISMP TYPES */
 113 #define ISMPTYPE_EDP    2
 114
 115
 116 /* EDP DEVICE TYPES */
 117 #define EDP_DEVICE_TYPE_SFS17           1
 118 #define EDP_DEVICE_TYPE_SFS18           2
 119 #define EDP_DEVICE_TYPE_ROUTER          3
 120 #define EDP_DEVICE_TYPE_BRIDGE          4
 121 #define EDP_DEVICE_TYPE_VLANMAN         5
 122 #define EDP_DEVICE_TYPE_NTSERVER        6
 123 #define EDP_DEVICE_TYPE_NTCLIENT        7
 124 #define EDP_DEVICE_TYPE_WIN95           8
 125 #define EDP_DEVICE_TYPE_WIN98           9
 126 #define EDP_DEVICE_TYPE_UNIXSERVER      10
 127 #define EDP_DEVICE_TYPE_UNIXCLIENT      11
 128 #define EDP_DEVICE_TYPE_ACCESSPOINT     12
 129
 130
 131 static const value_string edp_device_types[] = {
 132         { EDP_DEVICE_TYPE_SFS17,       "Network Switch running SecureFast version 1.7 or lower" },
 133         { EDP_DEVICE_TYPE_SFS18,         "Network Switch running SecureFast version 1.8 or greater" },
 134         { EDP_DEVICE_TYPE_ROUTER,         "Router" },
 135         { EDP_DEVICE_TYPE_BRIDGE,         "Bridge" },
 136         { EDP_DEVICE_TYPE_VLANMAN,         "Cabletron VLAN Manager" },
 137         { EDP_DEVICE_TYPE_NTSERVER,         "Network Server (NT)" },
 138         { EDP_DEVICE_TYPE_NTCLIENT,    "Network Workstation (NT)" },
 139         { EDP_DEVICE_TYPE_WIN95,     "Windows95" },
 140         { EDP_DEVICE_TYPE_WIN98,        "Windows98" },
 141         { EDP_DEVICE_TYPE_UNIXSERVER,       "UNIX Server" },
 142         { EDP_DEVICE_TYPE_UNIXCLIENT, "UNIX Workstation" },
 143         { EDP_DEVICE_TYPE_ACCESSPOINT,     "Roamabout wireless access point" },
 144         { 0,                    NULL },
 145 };
 146
 147
 148 /* EDP SFS Options */
 149 #define EDP_SFS_OPTION_UNUSED1          0x1
 150 #define EDP_SFS_OPTION_SFSSUP           0x2
 151 #define EDP_SFS_OPTION_LSP              0x4
 152 #define EDP_SFS_OPTION_FLOOD            0x8
 153 #define EDP_SFS_OPTION_RESOLVE          0x10
 154 #define EDP_SFS_OPTION_UNUSED2          0x20
 155 #define EDP_SFS_OPTION_TAGFLOOD         0x40
 156 #define EDP_SFS_OPTION_CALLTAP          0x80
 157 #define EDP_SFS_OPTION_CONMSG           0x100
 158 #define EDP_SFS_OPTION_REDUN            0x200
 159 #define EDP_SFS_OPTION_ISOLATED         0x400
 160 #define EDP_SFS_OPTION_UPLINK_SWITCH    0x800
 161 #define EDP_SFS_OPTION_UPLINK_CORE      0x1000
 162 #define EDP_SFS_OPTION_UPLINK_PORT      0x2000
 163 #define EDP_SFS_OPTION_UPLINK_FLOOD     0x4000
 164
 165 /* EDP Router Options */
 166 #define EDP_RTR_OPTION_SSR              0x1
 167 #define EDP_RTR_OPTION_IGMP             0x2
 168 #define EDP_RTR_OPTION_RIP              0x4
 169 #define EDP_RTR_OPTION_BGP              0x8
 170 #define EDP_RTR_OPTION_OSPF             0x10
 171 #define EDP_RTR_OPTION_DVMRP            0x20
 172 #define EDP_RTR_OPTION_8021Q            0x40
 173 #define EDP_RTR_OPTION_GVRP             0x80
 174 #define EDP_RTR_OPTION_GMRP             0x100
 175 #define EDP_RTR_OPTION_IGMP_SNOOP       0x200
 176 #define EDP_RTR_OPTION_ROUTE            0x400
 177 #define EDP_RTR_OPTION_TRANS            0x800
 178 #define EDP_RTR_OPTION_LEVEL1           0x1000
 179
 180 /* EDP Switch Options */
 181 #define EDP_SWITCH_OPTION_8021Q         0x1
 182 #define EDP_SWITCH_OPTION_GVRP          0x2
 183 #define EDP_SWITCH_OPTION_GMRP          0x4
 184 #define EDP_SWITCH_OPTION_IGMP          0x8
 185 #define EDP_SWITCH_OPTION_ROUTE         0x10
 186 #define EDP_SWITCH_OPTION_TRANS         0x20
 187 #define EDP_SWITCH_OPTION_LEVEL1        0x40
 188
 189 /* EDP End Station and Server Options */
 190 #define EDP_END_STATION_OPTION_DHCP     0x1
 191 #define EDP_END_STATION_OPTION_DNS      0x2
 192 #define EDP_END_STATION_OPTION_AD       0x4
 193
 194 /* EDP Tuple Types */
 195 #define EDP_TUPLE_UNKNOWN               0
 196 #define EDP_TUPLE_HOLD                  1
 197 #define EDP_TUPLE_INT_NAME              2
 198 #define EDP_TUPLE_SYS_DESCRIPT  3
 199 #define EDP_TUPLE_IPX_ADDR              4
 200
 201 static const value_string edp_tuple_types[] =
 202 {
 203         { EDP_TUPLE_UNKNOWN,"Unknown" },
 204         { EDP_TUPLE_HOLD,"Hold Time" },
 205         { EDP_TUPLE_INT_NAME,"Interface Name" },
 206         { EDP_TUPLE_SYS_DESCRIPT,"System Description" },
 207         { EDP_TUPLE_IPX_ADDR,"IPX Address" },
 208         { 0,NULL }
 209 };
 210
 211 /* Is value set? */
 212 static const true_false_string is_set = {
 213         "set",
 214         "not set"
 215 };
 216
 217
 218 /* Function to dissect EDP portion of ISMP message */
 219 static void
 220 dissect_ismp_edp(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *ismp_tree)
 221 {
 222         /* local variables used for EDP dissection */
 223         int neighbors_count = 0;
 224         int tuples_count = 0;
 225         guint16 device_type = 0;
 226         guint32 options = 0;
 227         guint16 num_neighbors = 0;
 228         guint16 num_tuples = 0;
 229         guint16 tuple_type = 0;
 230         guint16 tuple_length = 0;
 231
 232         /* Set up structures needed to add the protocol subtree and manage it */
 233         proto_item *edp_ti;
 234         proto_tree *edp_tree;
 235
 236         proto_item *edp_options_ti;
 237         proto_tree *edp_options_tree;
 238
 239         proto_item *edp_neighbors_ti;
 240         proto_tree *edp_neighbors_tree;
 241
 242         proto_item *edp_neighbors_leaf_ti;
 243         proto_tree *edp_neighbors_leaf_tree;
 244
 245         proto_item *edp_tuples_ti;
 246         proto_tree *edp_tuples_tree;
 247
 248         proto_item *edp_tuples_leaf_ti;
 249         proto_tree *edp_tuples_leaf_tree;
 250
 251         /* add column iformation marking this as EDP (Enterasys Discover Protocol */
 252         col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISMP.EDP");
 253         col_clear(pinfo->cinfo, COL_INFO);
 254
 255         /* create display subtree for EDP */
 256         if (ismp_tree) {
 257                 edp_ti  = proto_tree_add_item(ismp_tree, hf_ismp_edp, tvb, offset,
 258                         tvb_length_remaining(tvb, offset), FALSE);
 259                 edp_tree = proto_item_add_subtree(edp_ti, ett_ismp_edp);
 260
 261                 col_add_fstr(pinfo->cinfo, COL_INFO, "MIP %s, MMAC %s, ifIdx %d",
 262                         tvb_ip_to_str(tvb, offset+2),
 263                         tvb_ether_to_str(tvb, offset+6),
 264                         tvb_get_ntohl(tvb, offset+12));
 265
 266                 proto_tree_add_item(edp_tree, hf_ismp_edp_version, tvb, offset, 2, ENC_BIG_ENDIAN);
 267                 offset += 2;
 268                 proto_tree_add_item(edp_tree, hf_ismp_edp_module_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
 269                 offset += 4;
 270                 proto_tree_add_item(edp_tree, hf_ismp_edp_module_mac, tvb, offset, 6, ENC_NA);
 271                 offset += 6;
 272                 proto_tree_add_item(edp_tree, hf_ismp_edp_module_port, tvb, offset, 4, ENC_BIG_ENDIAN);
 273                 offset += 4;
 274                 proto_tree_add_item(edp_tree, hf_ismp_edp_chassis_mac, tvb, offset, 6, ENC_NA);
 275                 offset += 6;
 276                 proto_tree_add_item(edp_tree, hf_ismp_edp_chassis_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
 277                 offset += 4;
 278                 device_type = tvb_get_ntohs(tvb, offset);
 279                 proto_tree_add_item(edp_tree, hf_ismp_edp_device_type, tvb, offset, 2, ENC_BIG_ENDIAN);
 280                 offset += 2;
 281                 proto_tree_add_uint_format(edp_tree, hf_ismp_edp_module_rev, tvb, offset, 4, tvb_get_ntohl(tvb, offset),
 282                         "Module Firmware Revision: %02x.%02x.%02x.%02x", tvb_get_guint8(tvb, offset),
 283                         tvb_get_guint8(tvb, offset+1), tvb_get_guint8(tvb, offset+2), tvb_get_guint8(tvb, offset+3));
 284                 offset += 4;
 285
 286                 /* create display subtree for EDP options */
 287                 options = tvb_get_ntohl(tvb, offset);
 288                 edp_options_ti = proto_tree_add_uint_format(edp_tree, hf_ismp_edp_options, tvb, offset, 4,
 289                         options,"Options: 0x%08x",options);
 290                 edp_options_tree = proto_item_add_subtree(edp_options_ti, ett_ismp_edp_options);
 291
 292                 /* depending on device_type, show the appropriate options */
 293                 switch (device_type) {
 294                         case EDP_DEVICE_TYPE_SFS17:
 295                         case EDP_DEVICE_TYPE_SFS18:
 296                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_flood, tvb, offset, 4, ENC_BIG_ENDIAN);
 297                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_port, tvb, offset, 4, ENC_BIG_ENDIAN);
 298                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_core, tvb, offset, 4, ENC_BIG_ENDIAN);
 299                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_switch, tvb, offset, 4, ENC_BIG_ENDIAN);
 300                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_isolated, tvb, offset, 4, ENC_BIG_ENDIAN);
 301                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_redun, tvb, offset, 4, ENC_BIG_ENDIAN);
 302                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_conmsg, tvb, offset, 4, ENC_BIG_ENDIAN);
 303                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_calltap, tvb, offset, 4, ENC_BIG_ENDIAN);
 304                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_tagflood, tvb, offset, 4, ENC_BIG_ENDIAN);
 305                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_unused2, tvb, offset, 4, ENC_BIG_ENDIAN);
 306                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_resolve, tvb, offset, 4, ENC_BIG_ENDIAN);
 307                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_flood, tvb, offset, 4, ENC_BIG_ENDIAN);
 308                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_lsp, tvb, offset, 4, ENC_BIG_ENDIAN);
 309                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_sfssup, tvb, offset, 4, ENC_BIG_ENDIAN);
 310                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_unused1, tvb, offset, 4, ENC_BIG_ENDIAN);
 311                                 break;
 312                         case EDP_DEVICE_TYPE_ROUTER:
 313                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_level1, tvb, offset, 4, ENC_BIG_ENDIAN);
 314                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_trans, tvb, offset, 4, ENC_BIG_ENDIAN);
 315                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_route, tvb, offset, 4, ENC_BIG_ENDIAN);
 316                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_igmp_snoop, tvb, offset, 4, ENC_BIG_ENDIAN);
 317                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_gmrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 318                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_gvrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 319                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_8021q, tvb, offset, 4, ENC_BIG_ENDIAN);
 320                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_dvmrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 321                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_ospf, tvb, offset, 4, ENC_BIG_ENDIAN);
 322                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_bgp, tvb, offset, 4, ENC_BIG_ENDIAN);
 323                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_rip, tvb, offset, 4, ENC_BIG_ENDIAN);
 324                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_igmp, tvb, offset, 4, ENC_BIG_ENDIAN);
 325                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_ssr, tvb, offset, 4, ENC_BIG_ENDIAN);
 326                                 break;
 327                         case EDP_DEVICE_TYPE_BRIDGE:
 328                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_level1, tvb, offset, 4, ENC_BIG_ENDIAN);
 329                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_trans, tvb, offset, 4, ENC_BIG_ENDIAN);
 330                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_route, tvb, offset, 4, ENC_BIG_ENDIAN);
 331                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_igmp, tvb, offset, 4, ENC_BIG_ENDIAN);
 332                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_gmrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 333                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_gvrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 334                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_8021q, tvb, offset, 4, ENC_BIG_ENDIAN);
 335                                 break;
 336                         case EDP_DEVICE_TYPE_VLANMAN:
 337                                 break;
 338                         case EDP_DEVICE_TYPE_NTSERVER:
 339                         case EDP_DEVICE_TYPE_NTCLIENT:
 340                         case EDP_DEVICE_TYPE_WIN95:
 341                         case EDP_DEVICE_TYPE_WIN98:
 342                         case EDP_DEVICE_TYPE_UNIXSERVER:
 343                         case EDP_DEVICE_TYPE_UNIXCLIENT:
 344                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_end_station_option_ad, tvb, offset, 4, ENC_BIG_ENDIAN);
 345                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_end_station_option_dns, tvb, offset, 4, ENC_BIG_ENDIAN);
 346                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_end_station_option_dhcp, tvb, offset, 4, ENC_BIG_ENDIAN);
 347                                 break;
 348                         case EDP_DEVICE_TYPE_ACCESSPOINT:
 349                         default:
 350                                 break;
 351                 }
 352                 offset += 4;
 353
 354                 /* determine the number of neighbors and create EDP neighbors subtree */
 355                 num_neighbors = tvb_get_ntohs(tvb, offset);
 356                 proto_tree_add_item(edp_tree, hf_ismp_edp_num_neighbors, tvb, offset, 2, ENC_BIG_ENDIAN);
 357                 offset += 2;
 358                 if (num_neighbors > 0)
 359                 {
 360                         edp_neighbors_ti = proto_tree_add_bytes_format(edp_tree, hf_ismp_edp_neighbors, tvb,
 361                                                                        offset, num_neighbors*10, NULL, "Neighbors:");
 362                         edp_neighbors_tree = proto_item_add_subtree(edp_neighbors_ti, ett_ismp_edp_neighbors);
 363                         while ( neighbors_count < num_neighbors && tvb_reported_length_remaining(tvb, offset) >= 10)
 364                         {
 365                                 edp_neighbors_leaf_ti = proto_tree_add_text(edp_neighbors_tree, tvb, offset, 10,
 366                                                 "Neighbor%d", (neighbors_count+1));
 367                                 edp_neighbors_leaf_tree = proto_item_add_subtree(edp_neighbors_leaf_ti, ett_ismp_edp_neighbors_leaf);
 368
 369                                 proto_tree_add_text(edp_neighbors_leaf_tree, tvb, offset, 6,
 370                                         "MAC Address: %s", tvb_ether_to_str(tvb, offset));
 371                                 proto_tree_add_text(edp_neighbors_leaf_tree, tvb, offset, 4,
 372                                         "Assigned Neighbor State 0x%04x", tvb_get_ntohl(tvb, offset));
 373                                 offset += 10;
 374                                 neighbors_count++;
 375                         }
 376                         if (neighbors_count != num_neighbors)
 377                         {
 378                                 proto_tree_add_text(edp_tree, tvb, offset, tvb_reported_length_remaining(tvb, offset),
 379                                 "MALFORMED PACKET");
 380                                 return;
 381                         }
 382                 }
 383
 384                 /* determine data remains, if so, count tuples
 385                    and create EDP tuples subtree */
 386                 if (tvb_reported_length_remaining(tvb, offset) != 0 &&
 387                         tvb_reported_length_remaining(tvb, offset) >= 2)
 388                 {
 389                         num_tuples = tvb_get_ntohs(tvb, offset);
 390                         proto_tree_add_item(edp_tree, hf_ismp_edp_num_tuples, tvb, offset, 2, ENC_BIG_ENDIAN);
 391                         offset += 2;
 392                 }
 393                 else if (tvb_reported_length_remaining(tvb, offset) > 0) {
 394                         proto_tree_add_text(edp_tree, tvb, offset,
 395                                 tvb_reported_length_remaining(tvb, offset), "MALFORMED PACKET");
 396                         return;
 397                 }
 398                 else
 399                 {
 400                         return;
 401                 }
 402
 403                 /* start populating tuple information */
 404                 if (num_tuples && tvb_reported_length_remaining(tvb, offset) >= 4)
 405                 {
 406                         edp_tuples_ti = proto_tree_add_bytes_format(edp_tree, hf_ismp_edp_tuples, tvb,
 407                                 offset, tvb_reported_length_remaining(tvb, offset), NULL, "Tuples");
 408                         edp_tuples_tree = proto_item_add_subtree(edp_tuples_ti, ett_ismp_edp_tuples);
 409
 410                         while ( (tuples_count < num_tuples) && (tvb_reported_length_remaining(tvb, offset) >= 4) )
 411                         {
 412
 413                                 tuple_length = tvb_get_ntohs(tvb, offset+2);
 414                                 edp_tuples_leaf_ti = proto_tree_add_text(edp_tuples_tree, tvb, offset, tuple_length,
 415                                         "Tuple%d", tuples_count+1);
 416
 417                                 edp_tuples_leaf_tree = proto_item_add_subtree(edp_tuples_leaf_ti, ett_ismp_edp_tuples_leaf);
 418
 419                                 tuple_type = tvb_get_ntohs(tvb, offset);
 420                                 proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, 2,
 421                                         "Tuple Type: %s(%d)", val_to_str( tuple_type, edp_tuple_types, "Unknown"), tuple_type );
 422                                 offset += 2;
 423                                 proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, 2,
 424                                         "Tuple Length: %d", tuple_length);
 425                                 offset += 2;
 426
 427                                 if (tvb_reported_length_remaining(tvb, offset) >= tuple_length)
 428                                 {
 429                                         tvb_ensure_bytes_exist(tvb, offset, tuple_length);
 430                                         switch (tuple_type)
 431                                         {
 432                                                 case EDP_TUPLE_HOLD:
 433                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 434                                                                 "Hold Time = %d", tvb_get_ntohs(tvb, offset));
 435                                                         break;
 436                                                 case EDP_TUPLE_INT_NAME:
 437                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 438                                                                 "Interface Name = %s", tvb_format_text(tvb, offset, tuple_length));
 439                                                         col_append_fstr(pinfo->cinfo, COL_INFO, ", ifName %s",
 440                                                                 tvb_format_text(tvb, offset, tuple_length));
 441                                                         break;
 442                                                 case EDP_TUPLE_SYS_DESCRIPT:
 443                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 444                                                                 "System Description = %s", tvb_format_text(tvb, offset, tuple_length));
 445                                                         break;
 446                                                 case EDP_TUPLE_IPX_ADDR:
 447                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 448                                                                 "Interface IPX_address = %s",
 449                                                                 ipx_addr_to_str(tvb_get_ntohl(tvb, offset),
 450                                                                 tvb_get_ephemeral_string(tvb, offset+4, tuple_length-4)));
 451                                                         break;
 452                                                 case EDP_TUPLE_UNKNOWN:
 453                                                 default:
 454                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 455                                                                 "Unknown Tuple Data %s", tvb_format_text(tvb, offset, tuple_length));
 456                                                         break;
 457                                         }
 458                                 }
 459                                 offset += tuple_length;
 460
 461                                 tuples_count++;
 462                                 tuple_type = 0;
 463                                 tuple_length = 0;
 464                         }
 465                         if (tuples_count != num_tuples)
 466                         {
 467                                 proto_tree_add_text(edp_tree, tvb, offset,
 468                                         tvb_reported_length_remaining(tvb, offset), "MALFORMED PACKET");
 469                                 return;
 470                         }
 471                         else
 472                         {
 473                                 return;
 474                         }
 475                 }
 476
 477         }
 478
 479
 480 }
 481
 482
 483 /* Code to actually dissect the packets */
 484 static void
 485 dissect_ismp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 486 {
 487         int offset = 0;
 488         guint16 message_type = 0;
 489         guint8 code_length = 0;
 490         guint8 weird_stuff[3] = { 0x42, 0x42, 0x03 };
 491
 492 /* Set up structures needed to add the protocol subtree and manage it */
 493         proto_item *ti;
 494         proto_tree *ismp_tree;
 495
 496 /* Make entries in Protocol column and Info column on summary display */
 497         col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISMP");
 498         col_clear(pinfo->cinfo, COL_INFO);
 499
 500         /*
 501          * XXX - I've seen captures with packets that have the ISMP
 502          * Ethernet frame type, but with the payload being 0x42 0x42 0x03
 503          * followed by what appears to be an ISMP frame.
 504          *
 505          * 0x4242 is not a valid ISMP version number.
 506          */
 507         if (tvb_memeql(tvb, offset, weird_stuff, sizeof weird_stuff) == 0)
 508                 offset += 3;    /* skip the weird stuff, for now */
 509         if (tree) {
 510                 /* create display subtree for ismp */
 511                 ti = proto_tree_add_item(tree, proto_ismp, tvb, offset, -1, ENC_NA);
 512
 513                 ismp_tree = proto_item_add_subtree(ti, ett_ismp);
 514
 515                 /* add an items to the subtree */
 516                 proto_tree_add_item(ismp_tree, hf_ismp_version, tvb, offset, 2, ENC_BIG_ENDIAN);
 517                 offset += 2;
 518                 message_type = tvb_get_ntohs(tvb, offset);
 519                 proto_tree_add_item(ismp_tree, hf_ismp_message_type, tvb, offset, 2, ENC_BIG_ENDIAN);
 520                 offset += 2;
 521                 proto_tree_add_item(ismp_tree, hf_ismp_seq_num, tvb, offset, 2, ENC_BIG_ENDIAN);
 522                 offset += 2;
 523                 code_length = tvb_get_guint8(tvb, offset);
 524                 proto_tree_add_item(ismp_tree, hf_ismp_code_length, tvb, offset, 1, ENC_BIG_ENDIAN);
 525                 offset += 1;
 526                 proto_tree_add_item(ismp_tree, hf_ismp_auth_data, tvb, offset, code_length, ENC_NA);
 527                 offset += code_length;
 528
 529                 /* if Enterasys Discover Protocol, dissect it */
 530                 if(message_type == ISMPTYPE_EDP)
 531                         dissect_ismp_edp(tvb, pinfo, offset, tree);
 532         }
 533
 534 }
 535
 536
 537 /* Register this protocol with Wireshark */
 538 void
 539 proto_register_ismp(void)
 540 {
 541
 542 /* Setup list of header fields  See Section 1.6.1 for details*/
 543         static hf_register_info hf[] = {
 544 #if 0
 545                 { &hf_ismp,
 546                         { "ISMP", "ismp",
 547                         FT_PROTOCOL, BASE_NONE, NULL, 0x0,
 548                         "Inter Switch Message Protocol", HFILL }
 549                 },
 550 #endif
 551                 { &hf_ismp_version,
 552                         { "Version",           "ismp.version",
 553                         FT_UINT16, BASE_DEC, NULL, 0x0,
 554                         NULL, HFILL }
 555                 },
 556                 { &hf_ismp_message_type,
 557                         { "Message Type", "ismp.msgtype",
 558                         FT_UINT16, BASE_DEC, NULL, 0x0,
 559                         NULL, HFILL }
 560                 },
 561                 { &hf_ismp_seq_num,
 562                         { "Sequence Number", "ismp.seqnum",
 563                         FT_UINT16, BASE_DEC, NULL, 0x0,
 564                         NULL, HFILL }
 565                 },
 566                 { &hf_ismp_code_length,
 567                         { "Auth Code Length", "ismp.codelen",
 568                         FT_UINT8, BASE_DEC, NULL, 0x0,
 569                         NULL, HFILL }
 570                 },
 571                 { &hf_ismp_auth_data,
 572                         { "Auth Data", "ismp.authdata",
 573                         FT_BYTES, BASE_NONE, NULL, 0x0,
 574                         NULL, HFILL }
 575                 },
 576                 { &hf_ismp_edp,
 577                         { "EDP", "ismp.edp",
 578                         FT_PROTOCOL, BASE_NONE, NULL, 0x0,
 579                         "Enterasys Discovery Protocol", HFILL }
 580                 },
 581                 { &hf_ismp_edp_version,
 582                         { "Version", "ismp.edp.version",
 583                         FT_UINT16, BASE_DEC, NULL, 0x0,
 584                         NULL, HFILL }
 585                 },
 586                 { &hf_ismp_edp_module_ip,
 587                         { "Module IP Address", "ismp.edp.modip",
 588                         FT_IPv4, BASE_NONE, NULL, 0x0,
 589                         NULL, HFILL }
 590                 },
 591                 { &hf_ismp_edp_module_mac,
 592                         { "Module MAC Address", "ismp.edp.modmac",
 593                         FT_ETHER, BASE_NONE, NULL, 0x0,
 594                         NULL, HFILL }
 595                 },
 596                 { &hf_ismp_edp_module_port,
 597                         { "Module Port (ifIndex num)", "ismp.edp.modport",
 598                         FT_UINT32, BASE_DEC, NULL, 0x0,
 599                         NULL, HFILL }
 600                 },
 601                 { &hf_ismp_edp_chassis_mac,
 602                         { "Chassis MAC Address", "ismp.edp.chassismac",
 603                         FT_ETHER, BASE_NONE, NULL, 0x0,
 604                         NULL, HFILL }
 605                 },
 606                 { &hf_ismp_edp_chassis_ip,
 607                         { "Chassis IP Address", "ismp.edp.chassisip",
 608                         FT_IPv4, BASE_NONE, NULL, 0x0,
 609                         NULL, HFILL }
 610                 },
 611                 { &hf_ismp_edp_device_type,
 612                         { "Device Type", "ismp.edp.devtype",
 613                         FT_UINT16, BASE_DEC, edp_device_types, 0x0,
 614                         NULL, HFILL }
 615                 },
 616                 { &hf_ismp_edp_module_rev,
 617                         { "Module Firmware Revision", "ismp.edp.rev",
 618                         FT_UINT32, BASE_DEC, NULL, 0x0,
 619                         NULL, HFILL }
 620                 },
 621                 { &hf_ismp_edp_options,
 622                         { "Device Options", "ismp.edp.opts",
 623                         FT_UINT32, BASE_DEC, NULL, 0x0,
 624                         NULL, HFILL }
 625                 },
 626                 { &hf_ismp_edp_sfs_option_unused1,
 627                         { "Unused", "ismp.edp.opts",
 628                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UNUSED1,
 629                         NULL, HFILL }
 630                 },
 631                 { &hf_ismp_edp_sfs_option_sfssup,
 632                         { "SFS Support", "ismp.edp.opts",
 633                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_SFSSUP,
 634                         NULL, HFILL }
 635                 },
 636                 { &hf_ismp_edp_sfs_option_lsp,
 637                         { "LSP Support", "ismp.edp.opts",
 638                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_LSP,
 639                         NULL, HFILL }
 640                 },
 641                 { &hf_ismp_edp_sfs_option_flood,
 642                         { "Flood Path Support", "ismp.edp.opts",
 643                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_FLOOD,
 644                         NULL, HFILL }
 645                 },
 646                 { &hf_ismp_edp_sfs_option_resolve,
 647                         { "Resolve Support", "ismp.edp.opts",
 648                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_RESOLVE,
 649                         NULL, HFILL }
 650                 },
 651                 { &hf_ismp_edp_sfs_option_unused2,
 652                         { "Unused", "ismp.edp.opts",
 653                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UNUSED2,
 654                         NULL, HFILL }
 655                 },
 656                 { &hf_ismp_edp_sfs_option_tagflood,
 657                         { "Tagged Flood Support", "ismp.edp.opts",
 658                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_TAGFLOOD,
 659                         NULL, HFILL }
 660                 },
 661                 { &hf_ismp_edp_sfs_option_calltap,
 662                         { "Call Tap Support", "ismp.edp.opts",
 663                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_CALLTAP,
 664                         NULL, HFILL }
 665                 },
 666                 { &hf_ismp_edp_sfs_option_conmsg,
 667                         { "Connection Message Support", "ismp.edp.opts",
 668                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_CONMSG,
 669                         NULL, HFILL }
 670                 },
 671                 { &hf_ismp_edp_sfs_option_redun,
 672                         { "Redundant Access Support", "ismp.edp.opts",
 673                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_REDUN,
 674                         NULL, HFILL }
 675                 },
 676                 { &hf_ismp_edp_sfs_option_isolated,
 677                         { "Isolated Switch", "ismp.edp.opts",
 678                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_ISOLATED,
 679                         NULL, HFILL }
 680                 },
 681                 { &hf_ismp_edp_sfs_option_uplink_switch,
 682                         { "Uplink Switch", "ismp.edp.opts",
 683                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_SWITCH,
 684                         NULL, HFILL }
 685                 },
 686                 { &hf_ismp_edp_sfs_option_uplink_core,
 687                         { "Uplink Core", "ismp.edp.opts",
 688                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_CORE,
 689                         NULL, HFILL }
 690                 },
 691                 { &hf_ismp_edp_sfs_option_uplink_port,
 692                         { "Uplink Port", "ismp.edp.opts",
 693                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_PORT,
 694                         NULL, HFILL }
 695                 },
 696                 { &hf_ismp_edp_sfs_option_uplink_flood,
 697                         { "Uplink Flood Support", "ismp.edp.opts",
 698                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_FLOOD,
 699                         NULL, HFILL }
 700                 },
 701                 { &hf_ismp_edp_rtr_option_ssr,
 702                         { "SSR Type Device", "ismp.edp.opts",
 703                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_SSR,
 704                         NULL, HFILL }
 705                 },
 706                 { &hf_ismp_edp_rtr_option_igmp,
 707                         { "IGMP Active", "ismp.edp.opts",
 708                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_IGMP,
 709                         NULL, HFILL }
 710                 },
 711                 { &hf_ismp_edp_rtr_option_rip,
 712                         { "RIP Active", "ismp.edp.opts",
 713                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_RIP,
 714                         NULL, HFILL }
 715                 },
 716                 { &hf_ismp_edp_rtr_option_bgp,
 717                         { "BGP Active", "ismp.edp.opts",
 718                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_BGP,
 719                         NULL, HFILL }
 720                 },
 721                 { &hf_ismp_edp_rtr_option_ospf,
 722                         { "OSPF Active", "ismp.edp.opts",
 723                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_OSPF,
 724                         NULL, HFILL }
 725                 },
 726                 { &hf_ismp_edp_rtr_option_dvmrp,
 727                         { "DVMRP Active", "ismp.edp.opts",
 728                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_DVMRP,
 729                         NULL, HFILL }
 730                 },
 731                 { &hf_ismp_edp_rtr_option_8021q,
 732                         { "802.1Q Support", "ismp.edp.opts",
 733                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_8021Q,
 734                         NULL, HFILL }
 735                 },
 736                 { &hf_ismp_edp_rtr_option_gvrp,
 737                         { "GVRP Support", "ismp.edp.opts",
 738                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_GVRP,
 739                         NULL, HFILL }
 740                 },
 741                 { &hf_ismp_edp_rtr_option_gmrp,
 742                         { "GMRP Support", "ismp.edp.opts",
 743                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_GMRP,
 744                         NULL, HFILL }
 745                 },
 746                 { &hf_ismp_edp_rtr_option_igmp_snoop,
 747                         { "IGMP Snooping Support", "ismp.edp.opts",
 748                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_IGMP_SNOOP,
 749                         NULL, HFILL }
 750                 },
 751                 { &hf_ismp_edp_rtr_option_route,
 752                         { "Route Bridging", "ismp.edp.opts",
 753                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_ROUTE,
 754                         NULL, HFILL }
 755                 },
 756                 { &hf_ismp_edp_rtr_option_trans,
 757                         { "Transparent Bridging", "ismp.edp.opts",
 758                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_TRANS,
 759                         NULL, HFILL }
 760                 },
 761                 { &hf_ismp_edp_rtr_option_level1,
 762                         { "Level 1 Functionality", "ismp.edp.opts",
 763                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_LEVEL1,
 764                         NULL, HFILL }
 765                 },
 766                 { &hf_ismp_edp_switch_option_8021q,
 767                         { "802.1Q Support", "ismp.edp.opts",
 768                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_8021Q,
 769                         NULL, HFILL }
 770                 },
 771                 { &hf_ismp_edp_switch_option_gvrp,
 772                         { "GVRP Support", "ismp.edp.opts",
 773                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_GVRP,
 774                         NULL, HFILL }
 775                 },
 776                 { &hf_ismp_edp_switch_option_gmrp,
 777                         { "GMRP Support", "ismp.edp.opts",
 778                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_GMRP,
 779                         NULL, HFILL }
 780                 },
 781                 { &hf_ismp_edp_switch_option_igmp,
 782                         { "IGMP Snooping Support", "ismp.edp.opts",
 783                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_IGMP,
 784                         NULL, HFILL }
 785                 },
 786                 { &hf_ismp_edp_switch_option_route,
 787                         { "Route Bridging", "ismp.edp.opts",
 788                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_ROUTE,
 789                         NULL, HFILL }
 790                 },
 791                 { &hf_ismp_edp_switch_option_trans,
 792                         { "Transparent Bridging", "ismp.edp.opts",
 793                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_TRANS,
 794                         NULL, HFILL }
 795                 },
 796                 { &hf_ismp_edp_switch_option_level1,
 797                         { "Level 1 Functionality", "ismp.edp.opts",
 798                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_LEVEL1,
 799                         NULL, HFILL }
 800                 },
 801                 { &hf_ismp_edp_end_station_option_dhcp,
 802                         { "DHCP Enabled", "ismp.edp.opts",
 803                         FT_BOOLEAN, 32, TFS(&is_set), EDP_END_STATION_OPTION_DHCP,
 804                         NULL, HFILL }
 805                 },
 806                 { &hf_ismp_edp_end_station_option_dns,
 807                         { "DNS Enabled", "ismp.edp.opts",
 808                         FT_BOOLEAN, 32, TFS(&is_set), EDP_END_STATION_OPTION_DNS,
 809                         NULL, HFILL }
 810                 },
 811                 { &hf_ismp_edp_end_station_option_ad,
 812                         { "Active Directory Enabled", "ismp.edp.opts",
 813                         FT_BOOLEAN, 32, TFS(&is_set), EDP_END_STATION_OPTION_AD,
 814                         NULL, HFILL }
 815                 },
 816                 { &hf_ismp_edp_num_neighbors,
 817                         { "Number of Known Neighbors", "ismp.edp.maccount",
 818                         FT_UINT16, BASE_DEC, NULL, 0x0,
 819                         NULL, HFILL }
 820                 },
 821                 { &hf_ismp_edp_neighbors,
 822                         { "Neighbors", "ismp.edp.nbrs",
 823                         FT_BYTES, BASE_NONE, NULL, 0x0,
 824                         NULL, HFILL }
 825                 },
 826                 { &hf_ismp_edp_num_tuples,
 827                         { "Number of Tuples", "ismp.edp.numtups",
 828                         FT_UINT16, BASE_DEC, NULL, 0x0,
 829                         NULL, HFILL }
 830                 },
 831                 { &hf_ismp_edp_tuples,
 832                         { "Number of Tuples", "ismp.edp.tups",
 833                         FT_BYTES, BASE_NONE, NULL, 0x0,
 834                         NULL, HFILL }
 835                 },
 836         };
 837
 838 /* Setup protocol subtree array */
 839         static gint *ett[] = {
 840                 &ett_ismp,
 841                 &ett_ismp_edp,
 842                 &ett_ismp_edp_options,
 843                 &ett_ismp_edp_neighbors,
 844                 &ett_ismp_edp_neighbors_leaf,
 845                 &ett_ismp_edp_tuples,
 846                 &ett_ismp_edp_tuples_leaf,
 847         };
 848
 849 /* Register the protocol name and description */
 850         proto_ismp = proto_register_protocol("InterSwitch Message Protocol",
 851             "ISMP", "ismp");
 852
 853 /* Required function calls to register the header fields and subtrees used */
 854         proto_register_field_array(proto_ismp, hf, array_length(hf));
 855         proto_register_subtree_array(ett, array_length(ett));
 856 }
 857
 858
 859 /* If this dissector uses sub-dissector registration add a registration routine.
 860    This format is required because a script is used to find these routines and
 861    create the code that calls these routines.
 862 */
 863 void
 864 proto_reg_handoff_ismp(void)
 865 {
 866         dissector_handle_t ismp_handle;
 867
 868         ismp_handle = create_dissector_handle(dissect_ismp,
 869             proto_ismp);
 870         dissector_add_uint("ethertype", ETHERTYPE_ISMP, ismp_handle);
 871 }