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  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  */
  24
  25 #include "config.h"
  26
  27 #include <glib.h>
  28
  29 #include <epan/packet.h>
  30 #include <epan/to_str.h>
  31 #include <epan/strutil.h>
  32 #include <epan/etypes.h>
  33
  34 void proto_register_ismp(void);
  35 void proto_reg_handoff_ismp(void);
  36
  37 /* Initialize the protocol and registered fields */
  38 static int proto_ismp = -1;
  39 static int hf_ismp_version = -1;
  40 static int hf_ismp_message_type = -1;
  41 static int hf_ismp_seq_num = -1;
  42 static int hf_ismp_code_length = -1;
  43 static int hf_ismp_auth_data = -1;
  44
  45 /* Enterasys/Cabletron Dicovery Protocol fields*/
  46 static int hf_ismp_edp = -1;
  47 static int hf_ismp_edp_version = -1;
  48 static int hf_ismp_edp_module_ip = -1;
  49 static int hf_ismp_edp_module_mac = -1;
  50 static int hf_ismp_edp_module_port = -1;
  51 static int hf_ismp_edp_chassis_mac =-1;
  52 static int hf_ismp_edp_chassis_ip = -1;
  53 static int hf_ismp_edp_device_type = -1;
  54 static int hf_ismp_edp_module_rev = -1;
  55 static int hf_ismp_edp_options = -1;
  56 static int hf_ismp_edp_sfs_option_unused1 = -1;
  57 static int hf_ismp_edp_sfs_option_sfssup = -1;
  58 static int hf_ismp_edp_sfs_option_lsp = -1;
  59 static int hf_ismp_edp_sfs_option_flood = -1;
  60 static int hf_ismp_edp_sfs_option_resolve = -1;
  61 static int hf_ismp_edp_sfs_option_unused2 = -1;
  62 static int hf_ismp_edp_sfs_option_tagflood = -1;
  63 static int hf_ismp_edp_sfs_option_calltap = -1;
  64 static int hf_ismp_edp_sfs_option_conmsg = -1;
  65 static int hf_ismp_edp_sfs_option_redun = -1;
  66 static int hf_ismp_edp_sfs_option_isolated = -1;
  67 static int hf_ismp_edp_sfs_option_uplink_switch = -1;
  68 static int hf_ismp_edp_sfs_option_uplink_core = -1;
  69 static int hf_ismp_edp_sfs_option_uplink_port = -1;
  70 static int hf_ismp_edp_sfs_option_uplink_flood = -1;
  71 static int hf_ismp_edp_rtr_option_ssr = -1;
  72 static int hf_ismp_edp_rtr_option_igmp = -1;
  73 static int hf_ismp_edp_rtr_option_rip = -1;
  74 static int hf_ismp_edp_rtr_option_bgp = -1;
  75 static int hf_ismp_edp_rtr_option_ospf = -1;
  76 static int hf_ismp_edp_rtr_option_dvmrp = -1;
  77 static int hf_ismp_edp_rtr_option_8021q = -1;
  78 static int hf_ismp_edp_rtr_option_gvrp = -1;
  79 static int hf_ismp_edp_rtr_option_gmrp = -1;
  80 static int hf_ismp_edp_rtr_option_igmp_snoop = -1;
  81 static int hf_ismp_edp_rtr_option_route = -1;
  82 static int hf_ismp_edp_rtr_option_trans = -1;
  83 static int hf_ismp_edp_rtr_option_level1 = -1;
  84 static int hf_ismp_edp_switch_option_8021q = -1;
  85 static int hf_ismp_edp_switch_option_gvrp = -1;
  86 static int hf_ismp_edp_switch_option_gmrp = -1;
  87 static int hf_ismp_edp_switch_option_igmp = -1;
  88 static int hf_ismp_edp_switch_option_route = -1;
  89 static int hf_ismp_edp_switch_option_trans = -1;
  90 static int hf_ismp_edp_switch_option_level1 = -1;
  91 static int hf_ismp_edp_end_station_option_dhcp = -1;
  92 static int hf_ismp_edp_end_station_option_dns = -1;
  93 static int hf_ismp_edp_end_station_option_ad = -1;
  94 static int hf_ismp_edp_num_neighbors = -1;
  95 static int hf_ismp_edp_neighbors = -1;
  96 static int hf_ismp_edp_num_tuples = -1;
  97 static int hf_ismp_edp_tuples = -1;
  98
  99
 100 /* Initialize the subtree pointers */
 101 static gint ett_ismp = -1;
 102 static gint ett_ismp_edp = -1;
 103 static gint ett_ismp_edp_options = -1;
 104 static gint ett_ismp_edp_neighbors = -1;
 105 static gint ett_ismp_edp_neighbors_leaf = -1;
 106 static gint ett_ismp_edp_tuples = -1;
 107 static gint ett_ismp_edp_tuples_leaf = -1;
 108
 109 /* ISMP TYPES */
 110 #define ISMPTYPE_EDP    2
 111
 112
 113 /* EDP DEVICE TYPES */
 114 #define EDP_DEVICE_TYPE_SFS17           1
 115 #define EDP_DEVICE_TYPE_SFS18           2
 116 #define EDP_DEVICE_TYPE_ROUTER          3
 117 #define EDP_DEVICE_TYPE_BRIDGE          4
 118 #define EDP_DEVICE_TYPE_VLANMAN         5
 119 #define EDP_DEVICE_TYPE_NTSERVER        6
 120 #define EDP_DEVICE_TYPE_NTCLIENT        7
 121 #define EDP_DEVICE_TYPE_WIN95           8
 122 #define EDP_DEVICE_TYPE_WIN98           9
 123 #define EDP_DEVICE_TYPE_UNIXSERVER      10
 124 #define EDP_DEVICE_TYPE_UNIXCLIENT      11
 125 #define EDP_DEVICE_TYPE_ACCESSPOINT     12
 126
 127
 128 static const value_string edp_device_types[] = {
 129         { EDP_DEVICE_TYPE_SFS17,       "Network Switch running SecureFast version 1.7 or lower" },
 130         { EDP_DEVICE_TYPE_SFS18,       "Network Switch running SecureFast version 1.8 or greater" },
 131         { EDP_DEVICE_TYPE_ROUTER,      "Router" },
 132         { EDP_DEVICE_TYPE_BRIDGE,      "Bridge" },
 133         { EDP_DEVICE_TYPE_VLANMAN,     "Cabletron VLAN Manager" },
 134         { EDP_DEVICE_TYPE_NTSERVER,    "Network Server (NT)" },
 135         { EDP_DEVICE_TYPE_NTCLIENT,    "Network Workstation (NT)" },
 136         { EDP_DEVICE_TYPE_WIN95,       "Windows95" },
 137         { EDP_DEVICE_TYPE_WIN98,       "Windows98" },
 138         { EDP_DEVICE_TYPE_UNIXSERVER,  "UNIX Server" },
 139         { EDP_DEVICE_TYPE_UNIXCLIENT,  "UNIX Workstation" },
 140         { EDP_DEVICE_TYPE_ACCESSPOINT, "Roamabout wireless access point" },
 141         { 0,                    NULL },
 142 };
 143
 144
 145 /* EDP SFS Options */
 146 #define EDP_SFS_OPTION_UNUSED1          0x1
 147 #define EDP_SFS_OPTION_SFSSUP           0x2
 148 #define EDP_SFS_OPTION_LSP              0x4
 149 #define EDP_SFS_OPTION_FLOOD            0x8
 150 #define EDP_SFS_OPTION_RESOLVE          0x10
 151 #define EDP_SFS_OPTION_UNUSED2          0x20
 152 #define EDP_SFS_OPTION_TAGFLOOD         0x40
 153 #define EDP_SFS_OPTION_CALLTAP          0x80
 154 #define EDP_SFS_OPTION_CONMSG           0x100
 155 #define EDP_SFS_OPTION_REDUN            0x200
 156 #define EDP_SFS_OPTION_ISOLATED         0x400
 157 #define EDP_SFS_OPTION_UPLINK_SWITCH    0x800
 158 #define EDP_SFS_OPTION_UPLINK_CORE      0x1000
 159 #define EDP_SFS_OPTION_UPLINK_PORT      0x2000
 160 #define EDP_SFS_OPTION_UPLINK_FLOOD     0x4000
 161
 162 /* EDP Router Options */
 163 #define EDP_RTR_OPTION_SSR              0x1
 164 #define EDP_RTR_OPTION_IGMP             0x2
 165 #define EDP_RTR_OPTION_RIP              0x4
 166 #define EDP_RTR_OPTION_BGP              0x8
 167 #define EDP_RTR_OPTION_OSPF             0x10
 168 #define EDP_RTR_OPTION_DVMRP            0x20
 169 #define EDP_RTR_OPTION_8021Q            0x40
 170 #define EDP_RTR_OPTION_GVRP             0x80
 171 #define EDP_RTR_OPTION_GMRP             0x100
 172 #define EDP_RTR_OPTION_IGMP_SNOOP       0x200
 173 #define EDP_RTR_OPTION_ROUTE            0x400
 174 #define EDP_RTR_OPTION_TRANS            0x800
 175 #define EDP_RTR_OPTION_LEVEL1           0x1000
 176
 177 /* EDP Switch Options */
 178 #define EDP_SWITCH_OPTION_8021Q         0x1
 179 #define EDP_SWITCH_OPTION_GVRP          0x2
 180 #define EDP_SWITCH_OPTION_GMRP          0x4
 181 #define EDP_SWITCH_OPTION_IGMP          0x8
 182 #define EDP_SWITCH_OPTION_ROUTE         0x10
 183 #define EDP_SWITCH_OPTION_TRANS         0x20
 184 #define EDP_SWITCH_OPTION_LEVEL1        0x40
 185
 186 /* EDP End Station and Server Options */
 187 #define EDP_END_STATION_OPTION_DHCP     0x1
 188 #define EDP_END_STATION_OPTION_DNS      0x2
 189 #define EDP_END_STATION_OPTION_AD       0x4
 190
 191 /* EDP Tuple Types */
 192 #define EDP_TUPLE_UNKNOWN               0
 193 #define EDP_TUPLE_HOLD                  1
 194 #define EDP_TUPLE_INT_NAME              2
 195 #define EDP_TUPLE_SYS_DESCRIPT  3
 196 #define EDP_TUPLE_IPX_ADDR              4
 197
 198 static const value_string edp_tuple_types[] =
 199 {
 200         { EDP_TUPLE_UNKNOWN,"Unknown" },
 201         { EDP_TUPLE_HOLD,"Hold Time" },
 202         { EDP_TUPLE_INT_NAME,"Interface Name" },
 203         { EDP_TUPLE_SYS_DESCRIPT,"System Description" },
 204         { EDP_TUPLE_IPX_ADDR,"IPX Address" },
 205         { 0,NULL }
 206 };
 207
 208 /* Is value set? */
 209 static const true_false_string is_set = {
 210         "set",
 211         "not set"
 212 };
 213
 214
 215 /* Function to dissect EDP portion of ISMP message */
 216 static void
 217 dissect_ismp_edp(tvbuff_t *tvb, packet_info *pinfo, int offset, proto_tree *ismp_tree)
 218 {
 219         /* local variables used for EDP dissection */
 220         int neighbors_count = 0;
 221         int tuples_count = 0;
 222         guint16 device_type = 0;
 223         guint32 options = 0;
 224         guint16 num_neighbors = 0;
 225         guint16 num_tuples = 0;
 226         guint16 tuple_type = 0;
 227         guint16 tuple_length = 0;
 228
 229         /* Set up structures needed to add the protocol subtree and manage it */
 230         proto_item *edp_ti;
 231         proto_tree *edp_tree;
 232
 233         proto_item *edp_options_ti;
 234         proto_tree *edp_options_tree;
 235
 236         proto_item *edp_neighbors_ti;
 237         proto_tree *edp_neighbors_tree;
 238
 239         proto_item *edp_neighbors_leaf_ti;
 240         proto_tree *edp_neighbors_leaf_tree;
 241
 242         proto_item *edp_tuples_ti;
 243         proto_tree *edp_tuples_tree;
 244
 245         proto_item *edp_tuples_leaf_ti;
 246         proto_tree *edp_tuples_leaf_tree;
 247
 248         /* add column iformation marking this as EDP (Enterasys Discover Protocol */
 249         col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISMP.EDP");
 250         col_clear(pinfo->cinfo, COL_INFO);
 251
 252         /* create display subtree for EDP */
 253         if (ismp_tree) {
 254                 edp_ti  = proto_tree_add_item(ismp_tree, hf_ismp_edp, tvb, offset,
 255                         tvb_length_remaining(tvb, offset), ENC_NA);
 256                 edp_tree = proto_item_add_subtree(edp_ti, ett_ismp_edp);
 257
 258                 col_add_fstr(pinfo->cinfo, COL_INFO, "MIP %s, MMAC %s, ifIdx %d",
 259                         tvb_ip_to_str(tvb, offset+2),
 260                         tvb_ether_to_str(tvb, offset+6),
 261                         tvb_get_ntohl(tvb, offset+12));
 262
 263                 proto_tree_add_item(edp_tree, hf_ismp_edp_version, tvb, offset, 2, ENC_BIG_ENDIAN);
 264                 offset += 2;
 265                 proto_tree_add_item(edp_tree, hf_ismp_edp_module_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
 266                 offset += 4;
 267                 proto_tree_add_item(edp_tree, hf_ismp_edp_module_mac, tvb, offset, 6, ENC_NA);
 268                 offset += 6;
 269                 proto_tree_add_item(edp_tree, hf_ismp_edp_module_port, tvb, offset, 4, ENC_BIG_ENDIAN);
 270                 offset += 4;
 271                 proto_tree_add_item(edp_tree, hf_ismp_edp_chassis_mac, tvb, offset, 6, ENC_NA);
 272                 offset += 6;
 273                 proto_tree_add_item(edp_tree, hf_ismp_edp_chassis_ip, tvb, offset, 4, ENC_BIG_ENDIAN);
 274                 offset += 4;
 275                 device_type = tvb_get_ntohs(tvb, offset);
 276                 proto_tree_add_item(edp_tree, hf_ismp_edp_device_type, tvb, offset, 2, ENC_BIG_ENDIAN);
 277                 offset += 2;
 278                 proto_tree_add_uint_format_value(edp_tree, hf_ismp_edp_module_rev, tvb, offset, 4, tvb_get_ntohl(tvb, offset),
 279                         "%02x.%02x.%02x.%02x", tvb_get_guint8(tvb, offset),
 280                         tvb_get_guint8(tvb, offset+1), tvb_get_guint8(tvb, offset+2), tvb_get_guint8(tvb, offset+3));
 281                 offset += 4;
 282
 283                 /* create display subtree for EDP options */
 284                 options = tvb_get_ntohl(tvb, offset);
 285                 edp_options_ti = proto_tree_add_uint_format(edp_tree, hf_ismp_edp_options, tvb, offset, 4,
 286                         options,"Options: 0x%08x",options);
 287                 edp_options_tree = proto_item_add_subtree(edp_options_ti, ett_ismp_edp_options);
 288
 289                 /* depending on device_type, show the appropriate options */
 290                 switch (device_type) {
 291                         case EDP_DEVICE_TYPE_SFS17:
 292                         case EDP_DEVICE_TYPE_SFS18:
 293                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_flood, tvb, offset, 4, ENC_BIG_ENDIAN);
 294                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_port, tvb, offset, 4, ENC_BIG_ENDIAN);
 295                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_core, tvb, offset, 4, ENC_BIG_ENDIAN);
 296                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_uplink_switch, tvb, offset, 4, ENC_BIG_ENDIAN);
 297                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_isolated, tvb, offset, 4, ENC_BIG_ENDIAN);
 298                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_redun, tvb, offset, 4, ENC_BIG_ENDIAN);
 299                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_conmsg, tvb, offset, 4, ENC_BIG_ENDIAN);
 300                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_calltap, tvb, offset, 4, ENC_BIG_ENDIAN);
 301                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_tagflood, tvb, offset, 4, ENC_BIG_ENDIAN);
 302                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_unused2, tvb, offset, 4, ENC_BIG_ENDIAN);
 303                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_resolve, tvb, offset, 4, ENC_BIG_ENDIAN);
 304                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_flood, tvb, offset, 4, ENC_BIG_ENDIAN);
 305                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_lsp, tvb, offset, 4, ENC_BIG_ENDIAN);
 306                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_sfssup, tvb, offset, 4, ENC_BIG_ENDIAN);
 307                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_sfs_option_unused1, tvb, offset, 4, ENC_BIG_ENDIAN);
 308                                 break;
 309                         case EDP_DEVICE_TYPE_ROUTER:
 310                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_level1, tvb, offset, 4, ENC_BIG_ENDIAN);
 311                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_trans, tvb, offset, 4, ENC_BIG_ENDIAN);
 312                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_route, tvb, offset, 4, ENC_BIG_ENDIAN);
 313                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_igmp_snoop, tvb, offset, 4, ENC_BIG_ENDIAN);
 314                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_gmrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 315                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_gvrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 316                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_8021q, tvb, offset, 4, ENC_BIG_ENDIAN);
 317                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_dvmrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 318                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_ospf, tvb, offset, 4, ENC_BIG_ENDIAN);
 319                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_bgp, tvb, offset, 4, ENC_BIG_ENDIAN);
 320                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_rip, tvb, offset, 4, ENC_BIG_ENDIAN);
 321                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_igmp, tvb, offset, 4, ENC_BIG_ENDIAN);
 322                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_rtr_option_ssr, tvb, offset, 4, ENC_BIG_ENDIAN);
 323                                 break;
 324                         case EDP_DEVICE_TYPE_BRIDGE:
 325                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_level1, tvb, offset, 4, ENC_BIG_ENDIAN);
 326                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_trans, tvb, offset, 4, ENC_BIG_ENDIAN);
 327                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_route, tvb, offset, 4, ENC_BIG_ENDIAN);
 328                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_igmp, tvb, offset, 4, ENC_BIG_ENDIAN);
 329                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_gmrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 330                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_gvrp, tvb, offset, 4, ENC_BIG_ENDIAN);
 331                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_switch_option_8021q, tvb, offset, 4, ENC_BIG_ENDIAN);
 332                                 break;
 333                         case EDP_DEVICE_TYPE_VLANMAN:
 334                                 break;
 335                         case EDP_DEVICE_TYPE_NTSERVER:
 336                         case EDP_DEVICE_TYPE_NTCLIENT:
 337                         case EDP_DEVICE_TYPE_WIN95:
 338                         case EDP_DEVICE_TYPE_WIN98:
 339                         case EDP_DEVICE_TYPE_UNIXSERVER:
 340                         case EDP_DEVICE_TYPE_UNIXCLIENT:
 341                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_end_station_option_ad, tvb, offset, 4, ENC_BIG_ENDIAN);
 342                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_end_station_option_dns, tvb, offset, 4, ENC_BIG_ENDIAN);
 343                                 proto_tree_add_item(edp_options_tree, hf_ismp_edp_end_station_option_dhcp, tvb, offset, 4, ENC_BIG_ENDIAN);
 344                                 break;
 345                         case EDP_DEVICE_TYPE_ACCESSPOINT:
 346                         default:
 347                                 break;
 348                 }
 349                 offset += 4;
 350
 351                 /* determine the number of neighbors and create EDP neighbors subtree */
 352                 num_neighbors = tvb_get_ntohs(tvb, offset);
 353                 proto_tree_add_item(edp_tree, hf_ismp_edp_num_neighbors, tvb, offset, 2, ENC_BIG_ENDIAN);
 354                 offset += 2;
 355                 if (num_neighbors > 0)
 356                 {
 357                         edp_neighbors_ti = proto_tree_add_item(edp_tree, hf_ismp_edp_neighbors, tvb,
 358                                                                                 offset, num_neighbors*10, ENC_NA);
 359                         edp_neighbors_tree = proto_item_add_subtree(edp_neighbors_ti, ett_ismp_edp_neighbors);
 360                         while ( neighbors_count < num_neighbors && tvb_reported_length_remaining(tvb, offset) >= 10)
 361                         {
 362                                 edp_neighbors_leaf_ti = proto_tree_add_text(edp_neighbors_tree, tvb, offset, 10,
 363                                                                                 "Neighbor%d", (neighbors_count+1));
 364                                 edp_neighbors_leaf_tree = proto_item_add_subtree(edp_neighbors_leaf_ti, ett_ismp_edp_neighbors_leaf);
 365
 366                                 proto_tree_add_text(edp_neighbors_leaf_tree, tvb, offset, 6,
 367                                         "MAC Address: %s", tvb_ether_to_str(tvb, offset));
 368                                 proto_tree_add_text(edp_neighbors_leaf_tree, tvb, offset, 4,
 369                                         "Assigned Neighbor State 0x%04x", tvb_get_ntohl(tvb, offset));
 370                                 offset += 10;
 371                                 neighbors_count++;
 372                         }
 373                         if (neighbors_count != num_neighbors)
 374                         {
 375                                 proto_tree_add_text(edp_tree, tvb, offset, tvb_reported_length_remaining(tvb, offset),
 376                                 "MALFORMED PACKET");
 377                                 return;
 378                         }
 379                 }
 380
 381                 /* determine data remains, if so, count tuples
 382                    and create EDP tuples subtree */
 383                 if (tvb_reported_length_remaining(tvb, offset) != 0 &&
 384                         tvb_reported_length_remaining(tvb, offset) >= 2)
 385                 {
 386                         num_tuples = tvb_get_ntohs(tvb, offset);
 387                         proto_tree_add_item(edp_tree, hf_ismp_edp_num_tuples, tvb, offset, 2, ENC_BIG_ENDIAN);
 388                         offset += 2;
 389                 }
 390                 else if (tvb_reported_length_remaining(tvb, offset) > 0) {
 391                         proto_tree_add_text(edp_tree, tvb, offset,
 392                                 tvb_reported_length_remaining(tvb, offset), "MALFORMED PACKET");
 393                         return;
 394                 }
 395                 else
 396                 {
 397                         return;
 398                 }
 399
 400                 /* start populating tuple information */
 401                 if (num_tuples && tvb_reported_length_remaining(tvb, offset) >= 4)
 402                 {
 403                         edp_tuples_ti = proto_tree_add_bytes_format(edp_tree, hf_ismp_edp_tuples, tvb,
 404                                 offset, tvb_reported_length_remaining(tvb, offset), NULL, "Tuples");
 405                         edp_tuples_tree = proto_item_add_subtree(edp_tuples_ti, ett_ismp_edp_tuples);
 406
 407                         while ( (tuples_count < num_tuples) && (tvb_reported_length_remaining(tvb, offset) >= 4) )
 408                         {
 409
 410                                 tuple_length = tvb_get_ntohs(tvb, offset+2);
 411                                 edp_tuples_leaf_ti = proto_tree_add_text(edp_tuples_tree, tvb, offset, tuple_length,
 412                                         "Tuple%d", tuples_count+1);
 413
 414                                 edp_tuples_leaf_tree = proto_item_add_subtree(edp_tuples_leaf_ti, ett_ismp_edp_tuples_leaf);
 415
 416                                 tuple_type = tvb_get_ntohs(tvb, offset);
 417                                 proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, 2,
 418                                         "Tuple Type: %s(%d)", val_to_str_const( tuple_type, edp_tuple_types, "Unknown"), tuple_type );
 419                                 offset += 2;
 420                                 proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, 2,
 421                                         "Tuple Length: %d", tuple_length);
 422                                 offset += 2;
 423
 424                                 if (tvb_reported_length_remaining(tvb, offset) >= tuple_length)
 425                                 {
 426                                         tvb_ensure_bytes_exist(tvb, offset, tuple_length);
 427                                         switch (tuple_type)
 428                                         {
 429                                                 case EDP_TUPLE_HOLD:
 430                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 431                                                                 "Hold Time = %d", tvb_get_ntohs(tvb, offset));
 432                                                         break;
 433                                                 case EDP_TUPLE_INT_NAME:
 434                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 435                                                                 "Interface Name = %s", tvb_format_text(tvb, offset, tuple_length));
 436                                                         col_append_fstr(pinfo->cinfo, COL_INFO, ", ifName %s",
 437                                                                 tvb_format_text(tvb, offset, tuple_length));
 438                                                         break;
 439                                                 case EDP_TUPLE_SYS_DESCRIPT:
 440                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 441                                                                 "System Description = %s", tvb_format_text(tvb, offset, tuple_length));
 442                                                         break;
 443                                                 case EDP_TUPLE_IPX_ADDR:
 444                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 445                                                                 "Interface IPX_address = %s",
 446                                                                 ipx_addr_to_str(tvb_get_ntohl(tvb, offset),
 447                                                                 tvb_get_string_enc(wmem_packet_scope(), tvb, offset+4, tuple_length-4, ENC_ASCII)));
 448                                                         break;
 449                                                 case EDP_TUPLE_UNKNOWN:
 450                                                 default:
 451                                                         proto_tree_add_text(edp_tuples_leaf_tree, tvb, offset, tuple_length,
 452                                                                 "Unknown Tuple Data %s", tvb_format_text(tvb, offset, tuple_length));
 453                                                         break;
 454                                         }
 455                                 }
 456                                 offset += tuple_length;
 457
 458                                 tuples_count++;
 459                         }
 460                         if (tuples_count != num_tuples)
 461                         {
 462                                 proto_tree_add_text(edp_tree, tvb, offset,
 463                                         tvb_reported_length_remaining(tvb, offset), "MALFORMED PACKET");
 464                                 return;
 465                         }
 466                         else
 467                         {
 468                                 return;
 469                         }
 470                 }
 471
 472         }
 473
 474
 475 }
 476
 477
 478 /* Code to actually dissect the packets */
 479 static void
 480 dissect_ismp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
 481 {
 482         int offset = 0;
 483         guint16 message_type = 0;
 484         guint8 code_length = 0;
 485         guint8 weird_stuff[3] = { 0x42, 0x42, 0x03 };
 486
 487 /* Set up structures needed to add the protocol subtree and manage it */
 488         proto_item *ti;
 489         proto_tree *ismp_tree;
 490
 491 /* Make entries in Protocol column and Info column on summary display */
 492         col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISMP");
 493         col_clear(pinfo->cinfo, COL_INFO);
 494
 495         /*
 496          * XXX - I've seen captures with packets that have the ISMP
 497          * Ethernet frame type, but with the payload being 0x42 0x42 0x03
 498          * followed by what appears to be an ISMP frame.
 499          *
 500          * 0x4242 is not a valid ISMP version number.
 501          */
 502         if (tvb_memeql(tvb, offset, weird_stuff, sizeof weird_stuff) == 0)
 503                 offset += 3;    /* skip the weird stuff, for now */
 504         if (tree) {
 505                 /* create display subtree for ismp */
 506                 ti = proto_tree_add_item(tree, proto_ismp, tvb, offset, -1, ENC_NA);
 507
 508                 ismp_tree = proto_item_add_subtree(ti, ett_ismp);
 509
 510                 /* add an items to the subtree */
 511                 proto_tree_add_item(ismp_tree, hf_ismp_version, tvb, offset, 2, ENC_BIG_ENDIAN);
 512                 offset += 2;
 513                 message_type = tvb_get_ntohs(tvb, offset);
 514                 proto_tree_add_item(ismp_tree, hf_ismp_message_type, tvb, offset, 2, ENC_BIG_ENDIAN);
 515                 offset += 2;
 516                 proto_tree_add_item(ismp_tree, hf_ismp_seq_num, tvb, offset, 2, ENC_BIG_ENDIAN);
 517                 offset += 2;
 518                 code_length = tvb_get_guint8(tvb, offset);
 519                 proto_tree_add_item(ismp_tree, hf_ismp_code_length, tvb, offset, 1, ENC_BIG_ENDIAN);
 520                 offset += 1;
 521                 proto_tree_add_item(ismp_tree, hf_ismp_auth_data, tvb, offset, code_length, ENC_NA);
 522                 offset += code_length;
 523
 524                 /* if Enterasys Discover Protocol, dissect it */
 525                 if(message_type == ISMPTYPE_EDP)
 526                         dissect_ismp_edp(tvb, pinfo, offset, tree);
 527         }
 528
 529 }
 530
 531
 532 /* Register this protocol with Wireshark */
 533 void
 534 proto_register_ismp(void)
 535 {
 536
 537 /* Setup list of header fields  See Section 1.6.1 for details*/
 538         static hf_register_info hf[] = {
 539 #if 0
 540                 { &hf_ismp,
 541                         { "ISMP", "ismp",
 542                         FT_PROTOCOL, BASE_NONE, NULL, 0x0,
 543                         "Inter Switch Message Protocol", HFILL }
 544                 },
 545 #endif
 546                 { &hf_ismp_version,
 547                         { "Version",           "ismp.version",
 548                         FT_UINT16, BASE_DEC, NULL, 0x0,
 549                         NULL, HFILL }
 550                 },
 551                 { &hf_ismp_message_type,
 552                         { "Message Type", "ismp.msgtype",
 553                         FT_UINT16, BASE_DEC, NULL, 0x0,
 554                         NULL, HFILL }
 555                 },
 556                 { &hf_ismp_seq_num,
 557                         { "Sequence Number", "ismp.seqnum",
 558                         FT_UINT16, BASE_DEC, NULL, 0x0,
 559                         NULL, HFILL }
 560                 },
 561                 { &hf_ismp_code_length,
 562                         { "Auth Code Length", "ismp.codelen",
 563                         FT_UINT8, BASE_DEC, NULL, 0x0,
 564                         NULL, HFILL }
 565                 },
 566                 { &hf_ismp_auth_data,
 567                         { "Auth Data", "ismp.authdata",
 568                         FT_BYTES, BASE_NONE, NULL, 0x0,
 569                         NULL, HFILL }
 570                 },
 571                 { &hf_ismp_edp,
 572                         { "EDP", "ismp.edp",
 573                         FT_PROTOCOL, BASE_NONE, NULL, 0x0,
 574                         "Enterasys Discovery Protocol", HFILL }
 575                 },
 576                 { &hf_ismp_edp_version,
 577                         { "Version", "ismp.edp.version",
 578                         FT_UINT16, BASE_DEC, NULL, 0x0,
 579                         NULL, HFILL }
 580                 },
 581                 { &hf_ismp_edp_module_ip,
 582                         { "Module IP Address", "ismp.edp.modip",
 583                         FT_IPv4, BASE_NONE, NULL, 0x0,
 584                         NULL, HFILL }
 585                 },
 586                 { &hf_ismp_edp_module_mac,
 587                         { "Module MAC Address", "ismp.edp.modmac",
 588                         FT_ETHER, BASE_NONE, NULL, 0x0,
 589                         NULL, HFILL }
 590                 },
 591                 { &hf_ismp_edp_module_port,
 592                         { "Module Port (ifIndex num)", "ismp.edp.modport",
 593                         FT_UINT32, BASE_DEC, NULL, 0x0,
 594                         NULL, HFILL }
 595                 },
 596                 { &hf_ismp_edp_chassis_mac,
 597                         { "Chassis MAC Address", "ismp.edp.chassismac",
 598                         FT_ETHER, BASE_NONE, NULL, 0x0,
 599                         NULL, HFILL }
 600                 },
 601                 { &hf_ismp_edp_chassis_ip,
 602                         { "Chassis IP Address", "ismp.edp.chassisip",
 603                         FT_IPv4, BASE_NONE, NULL, 0x0,
 604                         NULL, HFILL }
 605                 },
 606                 { &hf_ismp_edp_device_type,
 607                         { "Device Type", "ismp.edp.devtype",
 608                         FT_UINT16, BASE_DEC, VALS(edp_device_types), 0x0,
 609                         NULL, HFILL }
 610                 },
 611                 { &hf_ismp_edp_module_rev,
 612                         { "Module Firmware Revision", "ismp.edp.rev",
 613                         FT_UINT32, BASE_DEC, NULL, 0x0,
 614                         NULL, HFILL }
 615                 },
 616                 { &hf_ismp_edp_options,
 617                         { "Device Options", "ismp.edp.options",
 618                         FT_UINT32, BASE_DEC, NULL, 0x0,
 619                         NULL, HFILL }
 620                 },
 621                 { &hf_ismp_edp_sfs_option_unused1,
 622                         { "Unused", "ismp.edp.sfs_option_unused1",
 623                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UNUSED1,
 624                         NULL, HFILL }
 625                 },
 626                 { &hf_ismp_edp_sfs_option_sfssup,
 627                         { "SFS Support", "ismp.edp.sfs_option_sfssup",
 628                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_SFSSUP,
 629                         NULL, HFILL }
 630                 },
 631                 { &hf_ismp_edp_sfs_option_lsp,
 632                         { "LSP Support", "ismp.edp.sfs_option_lsp",
 633                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_LSP,
 634                         NULL, HFILL }
 635                 },
 636                 { &hf_ismp_edp_sfs_option_flood,
 637                         { "Flood Path Support", "ismp.edp.sfs_option_flood",
 638                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_FLOOD,
 639                         NULL, HFILL }
 640                 },
 641                 { &hf_ismp_edp_sfs_option_resolve,
 642                         { "Resolve Support", "ismp.edp.sfs_option_resolve",
 643                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_RESOLVE,
 644                         NULL, HFILL }
 645                 },
 646                 { &hf_ismp_edp_sfs_option_unused2,
 647                         { "Unused", "ismp.edp.sfs_option_unused2",
 648                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UNUSED2,
 649                         NULL, HFILL }
 650                 },
 651                 { &hf_ismp_edp_sfs_option_tagflood,
 652                         { "Tagged Flood Support", "ismp.edp.sfs_option_tagflood",
 653                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_TAGFLOOD,
 654                         NULL, HFILL }
 655                 },
 656                 { &hf_ismp_edp_sfs_option_calltap,
 657                         { "Call Tap Support", "ismp.edp.sfs_option_calltap",
 658                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_CALLTAP,
 659                         NULL, HFILL }
 660                 },
 661                 { &hf_ismp_edp_sfs_option_conmsg,
 662                         { "Connection Message Support", "ismp.edp.sfs_option_conmsg",
 663                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_CONMSG,
 664                         NULL, HFILL }
 665                 },
 666                 { &hf_ismp_edp_sfs_option_redun,
 667                         { "Redundant Access Support", "ismp.edp.sfs_option_redun",
 668                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_REDUN,
 669                         NULL, HFILL }
 670                 },
 671                 { &hf_ismp_edp_sfs_option_isolated,
 672                         { "Isolated Switch", "ismp.edp.sfs_option_isolated",
 673                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_ISOLATED,
 674                         NULL, HFILL }
 675                 },
 676                 { &hf_ismp_edp_sfs_option_uplink_switch,
 677                         { "Uplink Switch", "ismp.edp.sfs_option_uplink_switch",
 678                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_SWITCH,
 679                         NULL, HFILL }
 680                 },
 681                 { &hf_ismp_edp_sfs_option_uplink_core,
 682                         { "Uplink Core", "ismp.edp.sfs_option_uplink_core",
 683                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_CORE,
 684                         NULL, HFILL }
 685                 },
 686                 { &hf_ismp_edp_sfs_option_uplink_port,
 687                         { "Uplink Port", "ismp.edp.sfs_option_uplink_port",
 688                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_PORT,
 689                         NULL, HFILL }
 690                 },
 691                 { &hf_ismp_edp_sfs_option_uplink_flood,
 692                         { "Uplink Flood Support", "ismp.edp.sfs_option_uplink_flood",
 693                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SFS_OPTION_UPLINK_FLOOD,
 694                         NULL, HFILL }
 695                 },
 696                 { &hf_ismp_edp_rtr_option_ssr,
 697                         { "SSR Type Device", "ismp.edp.rtr_option_ssr",
 698                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_SSR,
 699                         NULL, HFILL }
 700                 },
 701                 { &hf_ismp_edp_rtr_option_igmp,
 702                         { "IGMP Active", "ismp.edp.rtr_option_igmp",
 703                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_IGMP,
 704                         NULL, HFILL }
 705                 },
 706                 { &hf_ismp_edp_rtr_option_rip,
 707                         { "RIP Active", "ismp.edp.rtr_option_rip",
 708                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_RIP,
 709                         NULL, HFILL }
 710                 },
 711                 { &hf_ismp_edp_rtr_option_bgp,
 712                         { "BGP Active", "ismp.edp.rtr_option_bgp",
 713                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_BGP,
 714                         NULL, HFILL }
 715                 },
 716                 { &hf_ismp_edp_rtr_option_ospf,
 717                         { "OSPF Active", "ismp.edp.rtr_option_ospf",
 718                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_OSPF,
 719                         NULL, HFILL }
 720                 },
 721                 { &hf_ismp_edp_rtr_option_dvmrp,
 722                         { "DVMRP Active", "ismp.edp.rtr_option_dvmrp",
 723                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_DVMRP,
 724                         NULL, HFILL }
 725                 },
 726                 { &hf_ismp_edp_rtr_option_8021q,
 727                         { "802.1Q Support", "ismp.edp.rtr_option_8021q",
 728                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_8021Q,
 729                         NULL, HFILL }
 730                 },
 731                 { &hf_ismp_edp_rtr_option_gvrp,
 732                         { "GVRP Support", "ismp.edp.rtr_option_gvrp",
 733                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_GVRP,
 734                         NULL, HFILL }
 735                 },
 736                 { &hf_ismp_edp_rtr_option_gmrp,
 737                         { "GMRP Support", "ismp.edp.rtr_option_gmrp",
 738                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_GMRP,
 739                         NULL, HFILL }
 740                 },
 741                 { &hf_ismp_edp_rtr_option_igmp_snoop,
 742                         { "IGMP Snooping Support", "ismp.edp.rtr_option_igmp_snoop",
 743                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_IGMP_SNOOP,
 744                         NULL, HFILL }
 745                 },
 746                 { &hf_ismp_edp_rtr_option_route,
 747                         { "Route Bridging", "ismp.edp.rtr_option_route",
 748                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_ROUTE,
 749                         NULL, HFILL }
 750                 },
 751                 { &hf_ismp_edp_rtr_option_trans,
 752                         { "Transparent Bridging", "ismp.edp.rtr_option_trans",
 753                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_TRANS,
 754                         NULL, HFILL }
 755                 },
 756                 { &hf_ismp_edp_rtr_option_level1,
 757                         { "Level 1 Functionality", "ismp.edp.rtr_option_level1",
 758                         FT_BOOLEAN, 32, TFS(&is_set), EDP_RTR_OPTION_LEVEL1,
 759                         NULL, HFILL }
 760                 },
 761                 { &hf_ismp_edp_switch_option_8021q,
 762                         { "802.1Q Support", "ismp.edp.switch_option_8021q",
 763                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_8021Q,
 764                         NULL, HFILL }
 765                 },
 766                 { &hf_ismp_edp_switch_option_gvrp,
 767                         { "GVRP Support", "ismp.edp.switch_option_gvrp",
 768                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_GVRP,
 769                         NULL, HFILL }
 770                 },
 771                 { &hf_ismp_edp_switch_option_gmrp,
 772                         { "GMRP Support", "ismp.edp.switch_option_gmrp",
 773                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_GMRP,
 774                         NULL, HFILL }
 775                 },
 776                 { &hf_ismp_edp_switch_option_igmp,
 777                         { "IGMP Snooping Support", "ismp.edp.switch_option_igmp",
 778                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_IGMP,
 779                         NULL, HFILL }
 780                 },
 781                 { &hf_ismp_edp_switch_option_route,
 782                         { "Route Bridging", "ismp.edp.switch_option_route",
 783                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_ROUTE,
 784                         NULL, HFILL }
 785                 },
 786                 { &hf_ismp_edp_switch_option_trans,
 787                         { "Transparent Bridging", "ismp.edp.switch_option_trans",
 788                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_TRANS,
 789                         NULL, HFILL }
 790                 },
 791                 { &hf_ismp_edp_switch_option_level1,
 792                         { "Level 1 Functionality", "ismp.edp.switch_option_level1",
 793                         FT_BOOLEAN, 32, TFS(&is_set), EDP_SWITCH_OPTION_LEVEL1,
 794                         NULL, HFILL }
 795                 },
 796                 { &hf_ismp_edp_end_station_option_dhcp,
 797                         { "DHCP Enabled", "ismp.edp.end_station_option_dhcp",
 798                         FT_BOOLEAN, 32, TFS(&is_set), EDP_END_STATION_OPTION_DHCP,
 799                         NULL, HFILL }
 800                 },
 801                 { &hf_ismp_edp_end_station_option_dns,
 802                         { "DNS Enabled", "ismp.edp.end_station_option_dns",
 803                         FT_BOOLEAN, 32, TFS(&is_set), EDP_END_STATION_OPTION_DNS,
 804                         NULL, HFILL }
 805                 },
 806                 { &hf_ismp_edp_end_station_option_ad,
 807                         { "Active Directory Enabled", "ismp.edp.end_station_option_ad",
 808                         FT_BOOLEAN, 32, TFS(&is_set), EDP_END_STATION_OPTION_AD,
 809                         NULL, HFILL }
 810                 },
 811                 { &hf_ismp_edp_num_neighbors,
 812                         { "Number of Known Neighbors", "ismp.edp.maccount",
 813                         FT_UINT16, BASE_DEC, NULL, 0x0,
 814                         NULL, HFILL }
 815                 },
 816                 { &hf_ismp_edp_neighbors,
 817                         { "Neighbors", "ismp.edp.nbrs",
 818                         FT_BYTES, BASE_NONE, NULL, 0x0,
 819                         NULL, HFILL }
 820                 },
 821                 { &hf_ismp_edp_num_tuples,
 822                         { "Number of Tuples", "ismp.edp.numtups",
 823                         FT_UINT16, BASE_DEC, NULL, 0x0,
 824                         NULL, HFILL }
 825                 },
 826                 { &hf_ismp_edp_tuples,
 827                         { "Number of Tuples", "ismp.edp.tups",
 828                         FT_BYTES, BASE_NONE, NULL, 0x0,
 829                         NULL, HFILL }
 830                 },
 831         };
 832
 833 /* Setup protocol subtree array */
 834         static gint *ett[] = {
 835                 &ett_ismp,
 836                 &ett_ismp_edp,
 837                 &ett_ismp_edp_options,
 838                 &ett_ismp_edp_neighbors,
 839                 &ett_ismp_edp_neighbors_leaf,
 840                 &ett_ismp_edp_tuples,
 841                 &ett_ismp_edp_tuples_leaf,
 842         };
 843
 844 /* Register the protocol name and description */
 845         proto_ismp = proto_register_protocol("InterSwitch Message Protocol",
 846             "ISMP", "ismp");
 847
 848 /* Required function calls to register the header fields and subtrees used */
 849         proto_register_field_array(proto_ismp, hf, array_length(hf));
 850         proto_register_subtree_array(ett, array_length(ett));
 851 }
 852
 853
 854 /* If this dissector uses sub-dissector registration add a registration routine.
 855    This format is required because a script is used to find these routines and
 856    create the code that calls these routines.
 857 */
 858 void
 859 proto_reg_handoff_ismp(void)
 860 {
 861         dissector_handle_t ismp_handle;
 862
 863         ismp_handle = create_dissector_handle(dissect_ismp,
 864             proto_ismp);
 865         dissector_add_uint("ethertype", ETHERTYPE_ISMP, ismp_handle);
 866 }
 867
 868 /*
 869  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 870  *
 871  * Local variables:
 872  * c-basic-offset: 8
 873  * tab-width: 8
 874  * indent-tabs-mode: t
 875  * End:
 876  *
 877  * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 878  * :indentSize=8:tabSize=8:noTabs=false:
 879  */