1 /*
2 * Copyright (c) 1998-2007 The TCPDUMP project
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that: (1) source code
6 * distributions retain the above copyright notice and this paragraph
7 * in its entirety, and (2) distributions including binary code include
8 * the above copyright notice and this paragraph in its entirety in
9 * the documentation or other materials provided with the distribution.
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
11 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
12 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
13 * FOR A PARTICULAR PURPOSE.
14 *
15 * Original code by Hannes Gredler (hannes@gredler.at)
16 * IEEE and TIA extensions by Carles Kishimoto <carles.kishimoto@gmail.com>
17 * DCBX extensions by Kaladhar Musunuru <kaladharm@sourceforge.net>
18 */
19
20 /* \summary: IEEE 802.1ab Link Layer Discovery Protocol (LLDP) printer */
21
22 #include <config.h>
23
24 #include "netdissect-stdinc.h"
25
26 #include <stdio.h>
27
28 #include "netdissect.h"
29 #include "extract.h"
30 #include "addrtoname.h"
31 #include "af.h"
32 #include "oui.h"
33
34 #define LLDP_EXTRACT_TYPE(x) (((x)&0xfe00)>>9)
35 #define LLDP_EXTRACT_LEN(x) ((x)&0x01ff)
36
37 /*
38 * TLV type codes
39 */
40 #define LLDP_END_TLV 0
41 #define LLDP_CHASSIS_ID_TLV 1
42 #define LLDP_PORT_ID_TLV 2
43 #define LLDP_TTL_TLV 3
44 #define LLDP_PORT_DESCR_TLV 4
45 #define LLDP_SYSTEM_NAME_TLV 5
46 #define LLDP_SYSTEM_DESCR_TLV 6
47 #define LLDP_SYSTEM_CAP_TLV 7
48 #define LLDP_MGMT_ADDR_TLV 8
49 #define LLDP_PRIVATE_TLV 127
50
51 static const struct tok lldp_tlv_values[] = {
52 { LLDP_END_TLV, "End" },
53 { LLDP_CHASSIS_ID_TLV, "Chassis ID" },
54 { LLDP_PORT_ID_TLV, "Port ID" },
55 { LLDP_TTL_TLV, "Time to Live" },
56 { LLDP_PORT_DESCR_TLV, "Port Description" },
57 { LLDP_SYSTEM_NAME_TLV, "System Name" },
58 { LLDP_SYSTEM_DESCR_TLV, "System Description" },
59 { LLDP_SYSTEM_CAP_TLV, "System Capabilities" },
60 { LLDP_MGMT_ADDR_TLV, "Management Address" },
61 { LLDP_PRIVATE_TLV, "Organization specific" },
62 { 0, NULL}
63 };
64
65 /*
66 * Chassis ID subtypes
67 */
68 #define LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE 1
69 #define LLDP_CHASSIS_INTF_ALIAS_SUBTYPE 2
70 #define LLDP_CHASSIS_PORT_COMP_SUBTYPE 3
71 #define LLDP_CHASSIS_MAC_ADDR_SUBTYPE 4
72 #define LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE 5
73 #define LLDP_CHASSIS_INTF_NAME_SUBTYPE 6
74 #define LLDP_CHASSIS_LOCAL_SUBTYPE 7
75
76 static const struct tok lldp_chassis_subtype_values[] = {
77 { LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE, "Chassis component"},
78 { LLDP_CHASSIS_INTF_ALIAS_SUBTYPE, "Interface alias"},
79 { LLDP_CHASSIS_PORT_COMP_SUBTYPE, "Port component"},
80 { LLDP_CHASSIS_MAC_ADDR_SUBTYPE, "MAC address"},
81 { LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE, "Network address"},
82 { LLDP_CHASSIS_INTF_NAME_SUBTYPE, "Interface name"},
83 { LLDP_CHASSIS_LOCAL_SUBTYPE, "Local"},
84 { 0, NULL}
85 };
86
87 /*
88 * Port ID subtypes
89 */
90 #define LLDP_PORT_INTF_ALIAS_SUBTYPE 1
91 #define LLDP_PORT_PORT_COMP_SUBTYPE 2
92 #define LLDP_PORT_MAC_ADDR_SUBTYPE 3
93 #define LLDP_PORT_NETWORK_ADDR_SUBTYPE 4
94 #define LLDP_PORT_INTF_NAME_SUBTYPE 5
95 #define LLDP_PORT_AGENT_CIRC_ID_SUBTYPE 6
96 #define LLDP_PORT_LOCAL_SUBTYPE 7
97
98 static const struct tok lldp_port_subtype_values[] = {
99 { LLDP_PORT_INTF_ALIAS_SUBTYPE, "Interface alias"},
100 { LLDP_PORT_PORT_COMP_SUBTYPE, "Port component"},
101 { LLDP_PORT_MAC_ADDR_SUBTYPE, "MAC address"},
102 { LLDP_PORT_NETWORK_ADDR_SUBTYPE, "Network Address"},
103 { LLDP_PORT_INTF_NAME_SUBTYPE, "Interface Name"},
104 { LLDP_PORT_AGENT_CIRC_ID_SUBTYPE, "Agent circuit ID"},
105 { LLDP_PORT_LOCAL_SUBTYPE, "Local"},
106 { 0, NULL}
107 };
108
109 /*
110 * System Capabilities
111 */
112 #define LLDP_CAP_OTHER (1 << 0)
113 #define LLDP_CAP_REPEATER (1 << 1)
114 #define LLDP_CAP_BRIDGE (1 << 2)
115 #define LLDP_CAP_WLAN_AP (1 << 3)
116 #define LLDP_CAP_ROUTER (1 << 4)
117 #define LLDP_CAP_PHONE (1 << 5)
118 #define LLDP_CAP_DOCSIS (1 << 6)
119 #define LLDP_CAP_STATION_ONLY (1 << 7)
120
121 static const struct tok lldp_cap_values[] = {
122 { LLDP_CAP_OTHER, "Other"},
123 { LLDP_CAP_REPEATER, "Repeater"},
124 { LLDP_CAP_BRIDGE, "Bridge"},
125 { LLDP_CAP_WLAN_AP, "WLAN AP"},
126 { LLDP_CAP_ROUTER, "Router"},
127 { LLDP_CAP_PHONE, "Telephone"},
128 { LLDP_CAP_DOCSIS, "Docsis"},
129 { LLDP_CAP_STATION_ONLY, "Station Only"},
130 { 0, NULL}
131 };
132
133 #define LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID 1
134 #define LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID 2
135 #define LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME 3
136 #define LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY 4
137 #define LLDP_PRIVATE_8021_SUBTYPE_LINKAGGR 7
138 #define LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION 8
139 #define LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION 9
140 #define LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION 10
141 #define LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION 11
142 #define LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY 12
143 #define LLDP_PRIVATE_8021_SUBTYPE_EVB 13
144 #define LLDP_PRIVATE_8021_SUBTYPE_CDCP 14
145
146 static const struct tok lldp_8021_subtype_values[] = {
147 { LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID, "Port VLAN Id"},
148 { LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID, "Port and Protocol VLAN ID"},
149 { LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME, "VLAN name"},
150 { LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY, "Protocol Identity"},
151 { LLDP_PRIVATE_8021_SUBTYPE_LINKAGGR, "Link aggregation"},
152 { LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION, "Congestion Notification"},
153 { LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION, "ETS Configuration"},
154 { LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION, "ETS Recommendation"},
155 { LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION, "Priority Flow Control Configuration"},
156 { LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY, "Application Priority"},
157 { LLDP_PRIVATE_8021_SUBTYPE_EVB, "EVB"},
158 { LLDP_PRIVATE_8021_SUBTYPE_CDCP,"CDCP"},
159 { 0, NULL}
160 };
161
162 #define LLDP_8021_PORT_PROTOCOL_VLAN_SUPPORT (1 << 1)
163 #define LLDP_8021_PORT_PROTOCOL_VLAN_STATUS (1 << 2)
164
165 static const struct tok lldp_8021_port_protocol_id_values[] = {
166 { LLDP_8021_PORT_PROTOCOL_VLAN_SUPPORT, "supported"},
167 { LLDP_8021_PORT_PROTOCOL_VLAN_STATUS, "enabled"},
168 { 0, NULL}
169 };
170
171 #define LLDP_PRIVATE_8023_SUBTYPE_MACPHY 1
172 #define LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER 2
173 #define LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR 3
174 #define LLDP_PRIVATE_8023_SUBTYPE_MTU 4
175
176 static const struct tok lldp_8023_subtype_values[] = {
177 { LLDP_PRIVATE_8023_SUBTYPE_MACPHY, "MAC/PHY configuration/status"},
178 { LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER, "Power via MDI"},
179 { LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR, "Link aggregation"},
180 { LLDP_PRIVATE_8023_SUBTYPE_MTU, "Max frame size"},
181 { 0, NULL}
182 };
183
184 #define LLDP_PRIVATE_TIA_SUBTYPE_CAPABILITIES 1
185 #define LLDP_PRIVATE_TIA_SUBTYPE_NETWORK_POLICY 2
186 #define LLDP_PRIVATE_TIA_SUBTYPE_LOCAL_ID 3
187 #define LLDP_PRIVATE_TIA_SUBTYPE_EXTENDED_POWER_MDI 4
188 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_HARDWARE_REV 5
189 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_FIRMWARE_REV 6
190 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SOFTWARE_REV 7
191 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SERIAL_NUMBER 8
192 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MANUFACTURER_NAME 9
193 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MODEL_NAME 10
194 #define LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_ASSET_ID 11
195
196 static const struct tok lldp_tia_subtype_values[] = {
197 { LLDP_PRIVATE_TIA_SUBTYPE_CAPABILITIES, "LLDP-MED Capabilities" },
198 { LLDP_PRIVATE_TIA_SUBTYPE_NETWORK_POLICY, "Network policy" },
199 { LLDP_PRIVATE_TIA_SUBTYPE_LOCAL_ID, "Location identification" },
200 { LLDP_PRIVATE_TIA_SUBTYPE_EXTENDED_POWER_MDI, "Extended power-via-MDI" },
201 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_HARDWARE_REV, "Inventory - hardware revision" },
202 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_FIRMWARE_REV, "Inventory - firmware revision" },
203 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SOFTWARE_REV, "Inventory - software revision" },
204 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SERIAL_NUMBER, "Inventory - serial number" },
205 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MANUFACTURER_NAME, "Inventory - manufacturer name" },
206 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MODEL_NAME, "Inventory - model name" },
207 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_ASSET_ID, "Inventory - asset ID" },
208 { 0, NULL}
209 };
210
211 #define LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_METERS 1
212 #define LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_FLOORS 2
213
214 static const struct tok lldp_tia_location_altitude_type_values[] = {
215 { LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_METERS, "meters"},
216 { LLDP_PRIVATE_TIA_LOCATION_ALTITUDE_FLOORS, "floors"},
217 { 0, NULL}
218 };
219
220 /* ANSI/TIA-1057 - Annex B */
221 #define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A1 1
222 #define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A2 2
223 #define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A3 3
224 #define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A4 4
225 #define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A5 5
226 #define LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A6 6
227
228 static const struct tok lldp_tia_location_lci_catype_values[] = {
229 { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A1, "national subdivisions (state,canton,region,province,prefecture)"},
230 { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A2, "county, parish, gun, district"},
231 { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A3, "city, township, shi"},
232 { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A4, "city division, borough, city district, ward chou"},
233 { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A5, "neighborhood, block"},
234 { LLDP_PRIVATE_TIA_LOCATION_LCI_CATYPE_A6, "street"},
235 { 0, NULL}
236 };
237
238 static const struct tok lldp_tia_location_lci_what_values[] = {
239 { 0, "location of DHCP server"},
240 { 1, "location of the network element believed to be closest to the client"},
241 { 2, "location of the client"},
242 { 0, NULL}
243 };
244
245 /*
246 * From RFC 3636 - dot3MauType
247 */
248 #define LLDP_MAU_TYPE_UNKNOWN 0
249 #define LLDP_MAU_TYPE_AUI 1
250 #define LLDP_MAU_TYPE_10BASE_5 2
251 #define LLDP_MAU_TYPE_FOIRL 3
252 #define LLDP_MAU_TYPE_10BASE_2 4
253 #define LLDP_MAU_TYPE_10BASE_T 5
254 #define LLDP_MAU_TYPE_10BASE_FP 6
255 #define LLDP_MAU_TYPE_10BASE_FB 7
256 #define LLDP_MAU_TYPE_10BASE_FL 8
257 #define LLDP_MAU_TYPE_10BROAD36 9
258 #define LLDP_MAU_TYPE_10BASE_T_HD 10
259 #define LLDP_MAU_TYPE_10BASE_T_FD 11
260 #define LLDP_MAU_TYPE_10BASE_FL_HD 12
261 #define LLDP_MAU_TYPE_10BASE_FL_FD 13
262 #define LLDP_MAU_TYPE_100BASE_T4 14
263 #define LLDP_MAU_TYPE_100BASE_TX_HD 15
264 #define LLDP_MAU_TYPE_100BASE_TX_FD 16
265 #define LLDP_MAU_TYPE_100BASE_FX_HD 17
266 #define LLDP_MAU_TYPE_100BASE_FX_FD 18
267 #define LLDP_MAU_TYPE_100BASE_T2_HD 19
268 #define LLDP_MAU_TYPE_100BASE_T2_FD 20
269 #define LLDP_MAU_TYPE_1000BASE_X_HD 21
270 #define LLDP_MAU_TYPE_1000BASE_X_FD 22
271 #define LLDP_MAU_TYPE_1000BASE_LX_HD 23
272 #define LLDP_MAU_TYPE_1000BASE_LX_FD 24
273 #define LLDP_MAU_TYPE_1000BASE_SX_HD 25
274 #define LLDP_MAU_TYPE_1000BASE_SX_FD 26
275 #define LLDP_MAU_TYPE_1000BASE_CX_HD 27
276 #define LLDP_MAU_TYPE_1000BASE_CX_FD 28
277 #define LLDP_MAU_TYPE_1000BASE_T_HD 29
278 #define LLDP_MAU_TYPE_1000BASE_T_FD 30
279 #define LLDP_MAU_TYPE_10GBASE_X 31
280 #define LLDP_MAU_TYPE_10GBASE_LX4 32
281 #define LLDP_MAU_TYPE_10GBASE_R 33
282 #define LLDP_MAU_TYPE_10GBASE_ER 34
283 #define LLDP_MAU_TYPE_10GBASE_LR 35
284 #define LLDP_MAU_TYPE_10GBASE_SR 36
285 #define LLDP_MAU_TYPE_10GBASE_W 37
286 #define LLDP_MAU_TYPE_10GBASE_EW 38
287 #define LLDP_MAU_TYPE_10GBASE_LW 39
288 #define LLDP_MAU_TYPE_10GBASE_SW 40
289
290 static const struct tok lldp_mau_types_values[] = {
291 { LLDP_MAU_TYPE_UNKNOWN, "Unknown"},
292 { LLDP_MAU_TYPE_AUI, "AUI"},
293 { LLDP_MAU_TYPE_10BASE_5, "10BASE_5"},
294 { LLDP_MAU_TYPE_FOIRL, "FOIRL"},
295 { LLDP_MAU_TYPE_10BASE_2, "10BASE2"},
296 { LLDP_MAU_TYPE_10BASE_T, "10BASET duplex mode unknown"},
297 { LLDP_MAU_TYPE_10BASE_FP, "10BASEFP"},
298 { LLDP_MAU_TYPE_10BASE_FB, "10BASEFB"},
299 { LLDP_MAU_TYPE_10BASE_FL, "10BASEFL duplex mode unknown"},
300 { LLDP_MAU_TYPE_10BROAD36, "10BROAD36"},
301 { LLDP_MAU_TYPE_10BASE_T_HD, "10BASET hdx"},
302 { LLDP_MAU_TYPE_10BASE_T_FD, "10BASET fdx"},
303 { LLDP_MAU_TYPE_10BASE_FL_HD, "10BASEFL hdx"},
304 { LLDP_MAU_TYPE_10BASE_FL_FD, "10BASEFL fdx"},
305 { LLDP_MAU_TYPE_100BASE_T4, "100BASET4"},
306 { LLDP_MAU_TYPE_100BASE_TX_HD, "100BASETX hdx"},
307 { LLDP_MAU_TYPE_100BASE_TX_FD, "100BASETX fdx"},
308 { LLDP_MAU_TYPE_100BASE_FX_HD, "100BASEFX hdx"},
309 { LLDP_MAU_TYPE_100BASE_FX_FD, "100BASEFX fdx"},
310 { LLDP_MAU_TYPE_100BASE_T2_HD, "100BASET2 hdx"},
311 { LLDP_MAU_TYPE_100BASE_T2_FD, "100BASET2 fdx"},
312 { LLDP_MAU_TYPE_1000BASE_X_HD, "1000BASEX hdx"},
313 { LLDP_MAU_TYPE_1000BASE_X_FD, "1000BASEX fdx"},
314 { LLDP_MAU_TYPE_1000BASE_LX_HD, "1000BASELX hdx"},
315 { LLDP_MAU_TYPE_1000BASE_LX_FD, "1000BASELX fdx"},
316 { LLDP_MAU_TYPE_1000BASE_SX_HD, "1000BASESX hdx"},
317 { LLDP_MAU_TYPE_1000BASE_SX_FD, "1000BASESX fdx"},
318 { LLDP_MAU_TYPE_1000BASE_CX_HD, "1000BASECX hdx"},
319 { LLDP_MAU_TYPE_1000BASE_CX_FD, "1000BASECX fdx"},
320 { LLDP_MAU_TYPE_1000BASE_T_HD, "1000BASET hdx"},
321 { LLDP_MAU_TYPE_1000BASE_T_FD, "1000BASET fdx"},
322 { LLDP_MAU_TYPE_10GBASE_X, "10GBASEX"},
323 { LLDP_MAU_TYPE_10GBASE_LX4, "10GBASELX4"},
324 { LLDP_MAU_TYPE_10GBASE_R, "10GBASER"},
325 { LLDP_MAU_TYPE_10GBASE_ER, "10GBASEER"},
326 { LLDP_MAU_TYPE_10GBASE_LR, "10GBASELR"},
327 { LLDP_MAU_TYPE_10GBASE_SR, "10GBASESR"},
328 { LLDP_MAU_TYPE_10GBASE_W, "10GBASEW"},
329 { LLDP_MAU_TYPE_10GBASE_EW, "10GBASEEW"},
330 { LLDP_MAU_TYPE_10GBASE_LW, "10GBASELW"},
331 { LLDP_MAU_TYPE_10GBASE_SW, "10GBASESW"},
332 { 0, NULL}
333 };
334
335 #define LLDP_8023_AUTONEGOTIATION_SUPPORT (1 << 0)
336 #define LLDP_8023_AUTONEGOTIATION_STATUS (1 << 1)
337
338 static const struct tok lldp_8023_autonegotiation_values[] = {
339 { LLDP_8023_AUTONEGOTIATION_SUPPORT, "supported"},
340 { LLDP_8023_AUTONEGOTIATION_STATUS, "enabled"},
341 { 0, NULL}
342 };
343
344 #define LLDP_TIA_CAPABILITY_MED (1 << 0)
345 #define LLDP_TIA_CAPABILITY_NETWORK_POLICY (1 << 1)
346 #define LLDP_TIA_CAPABILITY_LOCATION_IDENTIFICATION (1 << 2)
347 #define LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PSE (1 << 3)
348 #define LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PD (1 << 4)
349 #define LLDP_TIA_CAPABILITY_INVENTORY (1 << 5)
350
351 static const struct tok lldp_tia_capabilities_values[] = {
352 { LLDP_TIA_CAPABILITY_MED, "LLDP-MED capabilities"},
353 { LLDP_TIA_CAPABILITY_NETWORK_POLICY, "network policy"},
354 { LLDP_TIA_CAPABILITY_LOCATION_IDENTIFICATION, "location identification"},
355 { LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PSE, "extended power via MDI-PSE"},
356 { LLDP_TIA_CAPABILITY_EXTENDED_POWER_MDI_PD, "extended power via MDI-PD"},
357 { LLDP_TIA_CAPABILITY_INVENTORY, "Inventory"},
358 { 0, NULL}
359 };
360
361 #define LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_1 1
362 #define LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_2 2
363 #define LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_3 3
364 #define LLDP_TIA_DEVICE_TYPE_NETWORK_CONNECTIVITY 4
365
366 static const struct tok lldp_tia_device_type_values[] = {
367 { LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_1, "endpoint class 1"},
368 { LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_2, "endpoint class 2"},
369 { LLDP_TIA_DEVICE_TYPE_ENDPOINT_CLASS_3, "endpoint class 3"},
370 { LLDP_TIA_DEVICE_TYPE_NETWORK_CONNECTIVITY, "network connectivity"},
371 { 0, NULL}
372 };
373
374 #define LLDP_TIA_APPLICATION_TYPE_VOICE 1
375 #define LLDP_TIA_APPLICATION_TYPE_VOICE_SIGNALING 2
376 #define LLDP_TIA_APPLICATION_TYPE_GUEST_VOICE 3
377 #define LLDP_TIA_APPLICATION_TYPE_GUEST_VOICE_SIGNALING 4
378 #define LLDP_TIA_APPLICATION_TYPE_SOFTPHONE_VOICE 5
379 #define LLDP_TIA_APPLICATION_TYPE_VIDEO_CONFERENCING 6
380 #define LLDP_TIA_APPLICATION_TYPE_STREAMING_VIDEO 7
381 #define LLDP_TIA_APPLICATION_TYPE_VIDEO_SIGNALING 8
382
383 static const struct tok lldp_tia_application_type_values[] = {
384 { LLDP_TIA_APPLICATION_TYPE_VOICE, "voice"},
385 { LLDP_TIA_APPLICATION_TYPE_VOICE_SIGNALING, "voice signaling"},
386 { LLDP_TIA_APPLICATION_TYPE_GUEST_VOICE, "guest voice"},
387 { LLDP_TIA_APPLICATION_TYPE_GUEST_VOICE_SIGNALING, "guest voice signaling"},
388 { LLDP_TIA_APPLICATION_TYPE_SOFTPHONE_VOICE, "softphone voice"},
389 { LLDP_TIA_APPLICATION_TYPE_VIDEO_CONFERENCING, "video conferencing"},
390 { LLDP_TIA_APPLICATION_TYPE_STREAMING_VIDEO, "streaming video"},
391 { LLDP_TIA_APPLICATION_TYPE_VIDEO_SIGNALING, "video signaling"},
392 { 0, NULL}
393 };
394
395 #define LLDP_TIA_NETWORK_POLICY_X_BIT (1 << 5)
396 #define LLDP_TIA_NETWORK_POLICY_T_BIT (1 << 6)
397 #define LLDP_TIA_NETWORK_POLICY_U_BIT (1 << 7)
398
399 static const struct tok lldp_tia_network_policy_bits_values[] = {
400 { LLDP_TIA_NETWORK_POLICY_U_BIT, "Unknown"},
401 { LLDP_TIA_NETWORK_POLICY_T_BIT, "Tagged"},
402 { LLDP_TIA_NETWORK_POLICY_X_BIT, "reserved"},
403 { 0, NULL}
404 };
405
406 #define LLDP_EXTRACT_NETWORK_POLICY_VLAN(x) (((x)&0x1ffe)>>1)
407 #define LLDP_EXTRACT_NETWORK_POLICY_L2_PRIORITY(x) (((x)&0x01ff)>>6)
408 #define LLDP_EXTRACT_NETWORK_POLICY_DSCP(x) ((x)&0x003f)
409
410 #define LLDP_TIA_LOCATION_DATA_FORMAT_COORDINATE_BASED 1
411 #define LLDP_TIA_LOCATION_DATA_FORMAT_CIVIC_ADDRESS 2
412 #define LLDP_TIA_LOCATION_DATA_FORMAT_ECS_ELIN 3
413
414 static const struct tok lldp_tia_location_data_format_values[] = {
415 { LLDP_TIA_LOCATION_DATA_FORMAT_COORDINATE_BASED, "coordinate-based LCI"},
416 { LLDP_TIA_LOCATION_DATA_FORMAT_CIVIC_ADDRESS, "civic address LCI"},
417 { LLDP_TIA_LOCATION_DATA_FORMAT_ECS_ELIN, "ECS ELIN"},
418 { 0, NULL}
419 };
420
421 #define LLDP_TIA_LOCATION_DATUM_WGS_84 1
422 #define LLDP_TIA_LOCATION_DATUM_NAD_83_NAVD_88 2
423 #define LLDP_TIA_LOCATION_DATUM_NAD_83_MLLW 3
424
425 static const struct tok lldp_tia_location_datum_type_values[] = {
426 { LLDP_TIA_LOCATION_DATUM_WGS_84, "World Geodesic System 1984"},
427 { LLDP_TIA_LOCATION_DATUM_NAD_83_NAVD_88, "North American Datum 1983 (NAVD88)"},
428 { LLDP_TIA_LOCATION_DATUM_NAD_83_MLLW, "North American Datum 1983 (MLLW)"},
429 { 0, NULL}
430 };
431
432 #define LLDP_TIA_POWER_SOURCE_PSE 1
433 #define LLDP_TIA_POWER_SOURCE_LOCAL 2
434 #define LLDP_TIA_POWER_SOURCE_PSE_AND_LOCAL 3
435
436 static const struct tok lldp_tia_power_source_values[] = {
437 { LLDP_TIA_POWER_SOURCE_PSE, "PSE - primary power source"},
438 { LLDP_TIA_POWER_SOURCE_LOCAL, "local - backup power source"},
439 { LLDP_TIA_POWER_SOURCE_PSE_AND_LOCAL, "PSE+local - reserved"},
440 { 0, NULL}
441 };
442
443 #define LLDP_TIA_POWER_PRIORITY_CRITICAL 1
444 #define LLDP_TIA_POWER_PRIORITY_HIGH 2
445 #define LLDP_TIA_POWER_PRIORITY_LOW 3
446
447 static const struct tok lldp_tia_power_priority_values[] = {
448 { LLDP_TIA_POWER_PRIORITY_CRITICAL, "critical"},
449 { LLDP_TIA_POWER_PRIORITY_HIGH, "high"},
450 { LLDP_TIA_POWER_PRIORITY_LOW, "low"},
451 { 0, NULL}
452 };
453
454 #define LLDP_TIA_POWER_VAL_MAX 1024
455
456 static const struct tok lldp_tia_inventory_values[] = {
457 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_HARDWARE_REV, "Hardware revision" },
458 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_FIRMWARE_REV, "Firmware revision" },
459 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SOFTWARE_REV, "Software revision" },
460 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SERIAL_NUMBER, "Serial number" },
461 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MANUFACTURER_NAME, "Manufacturer name" },
462 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MODEL_NAME, "Model name" },
463 { LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_ASSET_ID, "Asset ID" },
464 { 0, NULL}
465 };
466
467 /*
468 * From RFC 3636 - ifMauAutoNegCapAdvertisedBits
469 */
470 #define LLDP_MAU_PMD_OTHER (1 << 15)
471 #define LLDP_MAU_PMD_10BASE_T (1 << 14)
472 #define LLDP_MAU_PMD_10BASE_T_FD (1 << 13)
473 #define LLDP_MAU_PMD_100BASE_T4 (1 << 12)
474 #define LLDP_MAU_PMD_100BASE_TX (1 << 11)
475 #define LLDP_MAU_PMD_100BASE_TX_FD (1 << 10)
476 #define LLDP_MAU_PMD_100BASE_T2 (1 << 9)
477 #define LLDP_MAU_PMD_100BASE_T2_FD (1 << 8)
478 #define LLDP_MAU_PMD_FDXPAUSE (1 << 7)
479 #define LLDP_MAU_PMD_FDXAPAUSE (1 << 6)
480 #define LLDP_MAU_PMD_FDXSPAUSE (1 << 5)
481 #define LLDP_MAU_PMD_FDXBPAUSE (1 << 4)
482 #define LLDP_MAU_PMD_1000BASE_X (1 << 3)
483 #define LLDP_MAU_PMD_1000BASE_X_FD (1 << 2)
484 #define LLDP_MAU_PMD_1000BASE_T (1 << 1)
485 #define LLDP_MAU_PMD_1000BASE_T_FD (1 << 0)
486
487 static const struct tok lldp_pmd_capability_values[] = {
488 { LLDP_MAU_PMD_10BASE_T, "10BASE-T hdx"},
489 { LLDP_MAU_PMD_10BASE_T_FD, "10BASE-T fdx"},
490 { LLDP_MAU_PMD_100BASE_T4, "100BASE-T4"},
491 { LLDP_MAU_PMD_100BASE_TX, "100BASE-TX hdx"},
492 { LLDP_MAU_PMD_100BASE_TX_FD, "100BASE-TX fdx"},
493 { LLDP_MAU_PMD_100BASE_T2, "100BASE-T2 hdx"},
494 { LLDP_MAU_PMD_100BASE_T2_FD, "100BASE-T2 fdx"},
495 { LLDP_MAU_PMD_FDXPAUSE, "Pause for fdx links"},
496 { LLDP_MAU_PMD_FDXAPAUSE, "Asym PAUSE for fdx"},
497 { LLDP_MAU_PMD_FDXSPAUSE, "Sym PAUSE for fdx"},
498 { LLDP_MAU_PMD_FDXBPAUSE, "Asym and Sym PAUSE for fdx"},
499 { LLDP_MAU_PMD_1000BASE_X, "1000BASE-{X LX SX CX} hdx"},
500 { LLDP_MAU_PMD_1000BASE_X_FD, "1000BASE-{X LX SX CX} fdx"},
501 { LLDP_MAU_PMD_1000BASE_T, "1000BASE-T hdx"},
502 { LLDP_MAU_PMD_1000BASE_T_FD, "1000BASE-T fdx"},
503 { 0, NULL}
504 };
505
506 #define LLDP_MDI_PORT_CLASS (1 << 0)
507 #define LLDP_MDI_POWER_SUPPORT (1 << 1)
508 #define LLDP_MDI_POWER_STATE (1 << 2)
509 #define LLDP_MDI_PAIR_CONTROL_ABILITY (1 << 3)
510
511 static const struct tok lldp_mdi_values[] = {
512 { LLDP_MDI_PORT_CLASS, "PSE"},
513 { LLDP_MDI_POWER_SUPPORT, "supported"},
514 { LLDP_MDI_POWER_STATE, "enabled"},
515 { LLDP_MDI_PAIR_CONTROL_ABILITY, "can be controlled"},
516 { 0, NULL}
517 };
518
519 #define LLDP_MDI_PSE_PORT_POWER_PAIRS_SIGNAL 1
520 #define LLDP_MDI_PSE_PORT_POWER_PAIRS_SPARE 2
521
522 static const struct tok lldp_mdi_power_pairs_values[] = {
523 { LLDP_MDI_PSE_PORT_POWER_PAIRS_SIGNAL, "signal"},
524 { LLDP_MDI_PSE_PORT_POWER_PAIRS_SPARE, "spare"},
525 { 0, NULL}
526 };
527
528 #define LLDP_MDI_POWER_CLASS0 1
529 #define LLDP_MDI_POWER_CLASS1 2
530 #define LLDP_MDI_POWER_CLASS2 3
531 #define LLDP_MDI_POWER_CLASS3 4
532 #define LLDP_MDI_POWER_CLASS4 5
533
534 static const struct tok lldp_mdi_power_class_values[] = {
535 { LLDP_MDI_POWER_CLASS0, "class0"},
536 { LLDP_MDI_POWER_CLASS1, "class1"},
537 { LLDP_MDI_POWER_CLASS2, "class2"},
538 { LLDP_MDI_POWER_CLASS3, "class3"},
539 { LLDP_MDI_POWER_CLASS4, "class4"},
540 { 0, NULL}
541 };
542
543 #define LLDP_AGGREGATION_CAPABILITY (1 << 0)
544 #define LLDP_AGGREGATION_STATUS (1 << 1)
545
546 static const struct tok lldp_aggregation_values[] = {
547 { LLDP_AGGREGATION_CAPABILITY, "supported"},
548 { LLDP_AGGREGATION_STATUS, "enabled"},
549 { 0, NULL}
550 };
551
552 /*
553 * DCBX protocol subtypes.
554 */
555 #define LLDP_DCBX_SUBTYPE_1 1
556 #define LLDP_DCBX_SUBTYPE_2 2
557
558 static const struct tok lldp_dcbx_subtype_values[] = {
559 { LLDP_DCBX_SUBTYPE_1, "DCB Capability Exchange Protocol Rev 1" },
560 { LLDP_DCBX_SUBTYPE_2, "DCB Capability Exchange Protocol Rev 1.01" },
561 { 0, NULL}
562 };
563
564 #define LLDP_DCBX_CONTROL_TLV 1
565 #define LLDP_DCBX_PRIORITY_GROUPS_TLV 2
566 #define LLDP_DCBX_PRIORITY_FLOW_CONTROL_TLV 3
567 #define LLDP_DCBX_APPLICATION_TLV 4
568
569 /*
570 * Interface numbering subtypes.
571 */
572 #define LLDP_INTF_NUMB_IFX_SUBTYPE 2
573 #define LLDP_INTF_NUMB_SYSPORT_SUBTYPE 3
574
575 static const struct tok lldp_intf_numb_subtype_values[] = {
576 { LLDP_INTF_NUMB_IFX_SUBTYPE, "Interface Index" },
577 { LLDP_INTF_NUMB_SYSPORT_SUBTYPE, "System Port Number" },
578 { 0, NULL}
579 };
580
581 #define LLDP_INTF_NUM_LEN 5
582
583 #define LLDP_EVB_MODE_NOT_SUPPORTED 0
584 #define LLDP_EVB_MODE_EVB_BRIDGE 1
585 #define LLDP_EVB_MODE_EVB_STATION 2
586 #define LLDP_EVB_MODE_RESERVED 3
587
588 static const struct tok lldp_evb_mode_values[]={
589 { LLDP_EVB_MODE_NOT_SUPPORTED, "Not Supported"},
590 { LLDP_EVB_MODE_EVB_BRIDGE, "EVB Bridge"},
591 { LLDP_EVB_MODE_EVB_STATION, "EVB Station"},
592 { LLDP_EVB_MODE_RESERVED, "Reserved for future Standardization"},
593 { 0, NULL},
594 };
595
596 #define NO_OF_BITS 8
597 #define LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION_LENGTH 6
598 #define LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION_LENGTH 25
599 #define LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION_LENGTH 25
600 #define LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION_LENGTH 6
601 #define LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH 5
602 #define LLDP_PRIVATE_8021_SUBTYPE_EVB_LENGTH 9
603 #define LLDP_PRIVATE_8021_SUBTYPE_CDCP_MIN_LENGTH 8
604
605 #define LLDP_IANA_SUBTYPE_MUDURL 1
606
607 static const struct tok lldp_iana_subtype_values[] = {
608 { LLDP_IANA_SUBTYPE_MUDURL, "MUD-URL" },
609 { 0, NULL }
610 };
611
612
613 static void
print_ets_priority_assignment_table(netdissect_options * ndo,const u_char * ptr)614 print_ets_priority_assignment_table(netdissect_options *ndo,
615 const u_char *ptr)
616 {
617 ND_PRINT("\n\t Priority Assignment Table");
618 ND_PRINT("\n\t Priority : 0 1 2 3 4 5 6 7");
619 ND_PRINT("\n\t Value : %-3d %-3d %-3d %-3d %-3d %-3d %-3d %-3d",
620 GET_U_1(ptr) >> 4, GET_U_1(ptr) & 0x0f,
621 GET_U_1(ptr + 1) >> 4, GET_U_1(ptr + 1) & 0x0f,
622 GET_U_1(ptr + 2) >> 4, GET_U_1(ptr + 2) & 0x0f,
623 GET_U_1(ptr + 3) >> 4, GET_U_1(ptr + 3) & 0x0f);
624 }
625
626 static void
print_tc_bandwidth_table(netdissect_options * ndo,const u_char * ptr)627 print_tc_bandwidth_table(netdissect_options *ndo,
628 const u_char *ptr)
629 {
630 ND_PRINT("\n\t TC Bandwidth Table");
631 ND_PRINT("\n\t TC%% : 0 1 2 3 4 5 6 7");
632 ND_PRINT("\n\t Value : %-3d %-3d %-3d %-3d %-3d %-3d %-3d %-3d",
633 GET_U_1(ptr), GET_U_1(ptr + 1), GET_U_1(ptr + 2),
634 GET_U_1(ptr + 3), GET_U_1(ptr + 4), GET_U_1(ptr + 5),
635 GET_U_1(ptr + 6), GET_U_1(ptr + 7));
636 }
637
638 static void
print_tsa_assignment_table(netdissect_options * ndo,const u_char * ptr)639 print_tsa_assignment_table(netdissect_options *ndo,
640 const u_char *ptr)
641 {
642 ND_PRINT("\n\t TSA Assignment Table");
643 ND_PRINT("\n\t Traffic Class: 0 1 2 3 4 5 6 7");
644 ND_PRINT("\n\t Value : %-3d %-3d %-3d %-3d %-3d %-3d %-3d %-3d",
645 GET_U_1(ptr), GET_U_1(ptr + 1), GET_U_1(ptr + 2),
646 GET_U_1(ptr + 3), GET_U_1(ptr + 4), GET_U_1(ptr + 5),
647 GET_U_1(ptr + 6), GET_U_1(ptr + 7));
648 }
649
650 /*
651 * Print IEEE 802.1 private extensions. (802.1AB annex E)
652 */
653 static int
lldp_private_8021_print(netdissect_options * ndo,const u_char * tptr,u_int tlv_len)654 lldp_private_8021_print(netdissect_options *ndo,
655 const u_char *tptr, u_int tlv_len)
656 {
657 int hexdump = FALSE;
658 u_int subtype;
659 u_int sublen;
660 u_int tval;
661 u_int i;
662
663 if (tlv_len < 4) {
664 return hexdump;
665 }
666 subtype = GET_U_1(tptr + 3);
667
668 ND_PRINT("\n\t %s Subtype (%u)",
669 tok2str(lldp_8021_subtype_values, "unknown", subtype),
670 subtype);
671
672 switch (subtype) {
673 case LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID:
674 if (tlv_len < 6) {
675 return hexdump;
676 }
677 ND_PRINT("\n\t port vlan id (PVID): %u",
678 GET_BE_U_2(tptr + 4));
679 break;
680 case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID:
681 if (tlv_len < 7) {
682 return hexdump;
683 }
684 ND_PRINT("\n\t port and protocol vlan id (PPVID): %u, flags [%s] (0x%02x)",
685 GET_BE_U_2(tptr + 5),
686 bittok2str(lldp_8021_port_protocol_id_values, "none", GET_U_1(tptr + 4)),
687 GET_U_1(tptr + 4));
688 break;
689 case LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME:
690 if (tlv_len < 6) {
691 return hexdump;
692 }
693 ND_PRINT("\n\t vlan id (VID): %u", GET_BE_U_2(tptr + 4));
694 if (tlv_len < 7) {
695 return hexdump;
696 }
697 sublen = GET_U_1(tptr + 6);
698 if (tlv_len < 7+sublen) {
699 return hexdump;
700 }
701 ND_PRINT("\n\t vlan name: ");
702 nd_printjnp(ndo, tptr + 7, sublen);
703 break;
704 case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY:
705 if (tlv_len < 5) {
706 return hexdump;
707 }
708 sublen = GET_U_1(tptr + 4);
709 if (tlv_len < 5+sublen) {
710 return hexdump;
711 }
712 ND_PRINT("\n\t protocol identity: ");
713 nd_printjnp(ndo, tptr + 5, sublen);
714 break;
715
716 case LLDP_PRIVATE_8021_SUBTYPE_LINKAGGR:
717 if (tlv_len < 9) {
718 return hexdump;
719 }
720 ND_PRINT("\n\t aggregation status [%s], aggregation port ID %u",
721 bittok2str(lldp_aggregation_values, "none", GET_U_1((tptr + 4))),
722 GET_BE_U_4(tptr + 5));
723 break;
724
725 case LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION:
726 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION_LENGTH){
727 return hexdump;
728 }
729 tval=GET_U_1(tptr + 4);
730 ND_PRINT("\n\t Pre-Priority CNPV Indicator");
731 ND_PRINT("\n\t Priority : 0 1 2 3 4 5 6 7");
732 ND_PRINT("\n\t Value : ");
733 for(i=0;i<NO_OF_BITS;i++)
734 ND_PRINT("%-2d ", (tval >> i) & 0x01);
735 tval=GET_U_1(tptr + 5);
736 ND_PRINT("\n\t Pre-Priority Ready Indicator");
737 ND_PRINT("\n\t Priority : 0 1 2 3 4 5 6 7");
738 ND_PRINT("\n\t Value : ");
739 for(i=0;i<NO_OF_BITS;i++)
740 ND_PRINT("%-2d ", (tval >> i) & 0x01);
741 break;
742
743 case LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION:
744 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION_LENGTH) {
745 return hexdump;
746 }
747 tval=GET_U_1(tptr + 4);
748 ND_PRINT("\n\t Willing:%u, CBS:%u, RES:%u, Max TCs:%u",
749 tval >> 7, (tval >> 6) & 0x02, (tval >> 3) & 0x07, tval & 0x07);
750
751 /*Print Priority Assignment Table*/
752 print_ets_priority_assignment_table(ndo, tptr + 5);
753
754 /*Print TC Bandwidth Table*/
755 print_tc_bandwidth_table(ndo, tptr + 9);
756
757 /* Print TSA Assignment Table */
758 print_tsa_assignment_table(ndo, tptr + 17);
759
760 break;
761
762 case LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION:
763 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION_LENGTH) {
764 return hexdump;
765 }
766 ND_PRINT("\n\t RES: %u", GET_U_1(tptr + 4));
767 /*Print Priority Assignment Table */
768 print_ets_priority_assignment_table(ndo, tptr + 5);
769 /*Print TC Bandwidth Table */
770 print_tc_bandwidth_table(ndo, tptr + 9);
771 /* Print TSA Assignment Table */
772 print_tsa_assignment_table(ndo, tptr + 17);
773 break;
774
775 case LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION:
776 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION_LENGTH) {
777 return hexdump;
778 }
779 tval=GET_U_1(tptr + 4);
780 ND_PRINT("\n\t Willing: %u, MBC: %u, RES: %u, PFC cap:%u ",
781 tval >> 7, (tval >> 6) & 0x01, (tval >> 4) & 0x03, (tval & 0x0f));
782 ND_PRINT("\n\t PFC Enable");
783 tval=GET_U_1(tptr + 5);
784 ND_PRINT("\n\t Priority : 0 1 2 3 4 5 6 7");
785 ND_PRINT("\n\t Value : ");
786 for(i=0;i<NO_OF_BITS;i++)
787 ND_PRINT("%-2d ", (tval >> i) & 0x01);
788 break;
789
790 case LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY:
791 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH) {
792 return hexdump;
793 }
794 ND_PRINT("\n\t RES: %u", GET_U_1(tptr + 4));
795 if(tlv_len<=LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH){
796 return hexdump;
797 }
798 /* Length of Application Priority Table */
799 sublen=tlv_len-5;
800 if(sublen%3!=0){
801 return hexdump;
802 }
803 i=0;
804 ND_PRINT("\n\t Application Priority Table");
805 while(i<sublen) {
806 tval=GET_U_1(tptr + i + 5);
807 ND_PRINT("\n\t Priority: %u, RES: %u, Sel: %u, Protocol ID: %u",
808 tval >> 5, (tval >> 3) & 0x03, (tval & 0x07),
809 GET_BE_U_2(tptr + i + 6));
810 i=i+3;
811 }
812 break;
813 case LLDP_PRIVATE_8021_SUBTYPE_EVB:
814 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_EVB_LENGTH){
815 return hexdump;
816 }
817 ND_PRINT("\n\t EVB Bridge Status");
818 tval=GET_U_1(tptr + 4);
819 ND_PRINT("\n\t RES: %u, BGID: %u, RRCAP: %u, RRCTR: %u",
820 tval >> 3, (tval >> 2) & 0x01, (tval >> 1) & 0x01, tval & 0x01);
821 ND_PRINT("\n\t EVB Station Status");
822 tval=GET_U_1(tptr + 5);
823 ND_PRINT("\n\t RES: %u, SGID: %u, RRREQ: %u,RRSTAT: %u",
824 tval >> 4, (tval >> 3) & 0x01, (tval >> 2) & 0x01, tval & 0x03);
825 tval=GET_U_1(tptr + 6);
826 ND_PRINT("\n\t R: %u, RTE: %u, ",tval >> 5, tval & 0x1f);
827 tval=GET_U_1(tptr + 7);
828 ND_PRINT("EVB Mode: %s [%u]",
829 tok2str(lldp_evb_mode_values, "unknown", tval >> 6), tval >> 6);
830 ND_PRINT("\n\t ROL: %u, RWD: %u, ", (tval >> 5) & 0x01, tval & 0x1f);
831 tval=GET_U_1(tptr + 8);
832 ND_PRINT("RES: %u, ROL: %u, RKA: %u", tval >> 6, (tval >> 5) & 0x01, tval & 0x1f);
833 break;
834
835 case LLDP_PRIVATE_8021_SUBTYPE_CDCP:
836 if(tlv_len<LLDP_PRIVATE_8021_SUBTYPE_CDCP_MIN_LENGTH){
837 return hexdump;
838 }
839 tval=GET_U_1(tptr + 4);
840 ND_PRINT("\n\t Role: %u, RES: %u, Scomp: %u ",
841 tval >> 7, (tval >> 4) & 0x07, (tval >> 3) & 0x01);
842 ND_PRINT("ChnCap: %u", GET_BE_U_2(tptr + 6) & 0x0fff);
843 sublen=tlv_len-8;
844 if(sublen%3!=0) {
845 return hexdump;
846 }
847 i=0;
848 while(i<sublen) {
849 tval=GET_BE_U_3(tptr + i + 8);
850 ND_PRINT("\n\t SCID: %u, SVID: %u",
851 tval >> 12, tval & 0x000fff);
852 i=i+3;
853 }
854 break;
855
856 default:
857 hexdump = TRUE;
858 break;
859 }
860
861 return hexdump;
862 }
863
864 /*
865 * Print IEEE 802.3 private extensions. (802.3bc)
866 */
867 static int
lldp_private_8023_print(netdissect_options * ndo,const u_char * tptr,u_int tlv_len)868 lldp_private_8023_print(netdissect_options *ndo,
869 const u_char *tptr, u_int tlv_len)
870 {
871 int hexdump = FALSE;
872 u_int subtype;
873
874 if (tlv_len < 4) {
875 return hexdump;
876 }
877 subtype = GET_U_1(tptr + 3);
878
879 ND_PRINT("\n\t %s Subtype (%u)",
880 tok2str(lldp_8023_subtype_values, "unknown", subtype),
881 subtype);
882
883 switch (subtype) {
884 case LLDP_PRIVATE_8023_SUBTYPE_MACPHY:
885 if (tlv_len < 9) {
886 return hexdump;
887 }
888 ND_PRINT("\n\t autonegotiation [%s] (0x%02x)",
889 bittok2str(lldp_8023_autonegotiation_values, "none", GET_U_1(tptr + 4)),
890 GET_U_1(tptr + 4));
891 ND_PRINT("\n\t PMD autoneg capability [%s] (0x%04x)",
892 bittok2str(lldp_pmd_capability_values,"unknown", GET_BE_U_2(tptr + 5)),
893 GET_BE_U_2(tptr + 5));
894 ND_PRINT("\n\t MAU type %s (0x%04x)",
895 tok2str(lldp_mau_types_values, "unknown", GET_BE_U_2(tptr + 7)),
896 GET_BE_U_2(tptr + 7));
897 break;
898
899 case LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER:
900 if (tlv_len < 7) {
901 return hexdump;
902 }
903 ND_PRINT("\n\t MDI power support [%s], power pair %s, power class %s",
904 bittok2str(lldp_mdi_values, "none", GET_U_1((tptr + 4))),
905 tok2str(lldp_mdi_power_pairs_values, "unknown", GET_U_1((tptr + 5))),
906 tok2str(lldp_mdi_power_class_values, "unknown", GET_U_1((tptr + 6))));
907 break;
908
909 case LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR:
910 if (tlv_len < 9) {
911 return hexdump;
912 }
913 ND_PRINT("\n\t aggregation status [%s], aggregation port ID %u",
914 bittok2str(lldp_aggregation_values, "none", GET_U_1((tptr + 4))),
915 GET_BE_U_4(tptr + 5));
916 break;
917
918 case LLDP_PRIVATE_8023_SUBTYPE_MTU:
919 if (tlv_len < 6) {
920 return hexdump;
921 }
922 ND_PRINT("\n\t MTU size %u", GET_BE_U_2(tptr + 4));
923 break;
924
925 default:
926 hexdump = TRUE;
927 break;
928 }
929
930 return hexdump;
931 }
932
933 /*
934 * Extract 34bits of latitude/longitude coordinates.
935 */
936 static uint64_t
lldp_extract_latlon(netdissect_options * ndo,const u_char * tptr)937 lldp_extract_latlon(netdissect_options *ndo, const u_char *tptr)
938 {
939 uint64_t latlon;
940
941 latlon = GET_U_1(tptr) & 0x3;
942 latlon = (latlon << 32) | GET_BE_U_4(tptr + 1);
943
944 return latlon;
945 }
946
947 /* objects defined in IANA subtype 00 00 5e
948 * (right now there is only one)
949 */
950
951
952 static int
lldp_private_iana_print(netdissect_options * ndo,const u_char * tptr,u_int tlv_len)953 lldp_private_iana_print(netdissect_options *ndo,
954 const u_char *tptr, u_int tlv_len)
955 {
956 int hexdump = FALSE;
957 u_int subtype;
958
959 if (tlv_len < 8) {
960 return hexdump;
961 }
962 subtype = GET_U_1(tptr + 3);
963
964 ND_PRINT("\n\t %s Subtype (%u)",
965 tok2str(lldp_iana_subtype_values, "unknown", subtype),
966 subtype);
967
968 switch (subtype) {
969 case LLDP_IANA_SUBTYPE_MUDURL:
970 ND_PRINT("\n\t MUD-URL=");
971 (void)nd_printn(ndo, tptr+4, tlv_len-4, NULL);
972 break;
973 default:
974 hexdump=TRUE;
975 }
976
977 return hexdump;
978 }
979
980
981
982 /*
983 * Print private TIA extensions.
984 */
985 static int
lldp_private_tia_print(netdissect_options * ndo,const u_char * tptr,u_int tlv_len)986 lldp_private_tia_print(netdissect_options *ndo,
987 const u_char *tptr, u_int tlv_len)
988 {
989 int hexdump = FALSE;
990 u_int subtype;
991 uint8_t location_format;
992 uint16_t power_val;
993 u_int lci_len;
994 uint8_t ca_type, ca_len;
995
996 if (tlv_len < 4) {
997 return hexdump;
998 }
999 subtype = GET_U_1(tptr + 3);
1000
1001 ND_PRINT("\n\t %s Subtype (%u)",
1002 tok2str(lldp_tia_subtype_values, "unknown", subtype),
1003 subtype);
1004
1005 switch (subtype) {
1006 case LLDP_PRIVATE_TIA_SUBTYPE_CAPABILITIES:
1007 if (tlv_len < 7) {
1008 return hexdump;
1009 }
1010 ND_PRINT("\n\t Media capabilities [%s] (0x%04x)",
1011 bittok2str(lldp_tia_capabilities_values, "none",
1012 GET_BE_U_2(tptr + 4)), GET_BE_U_2(tptr + 4));
1013 ND_PRINT("\n\t Device type [%s] (0x%02x)",
1014 tok2str(lldp_tia_device_type_values, "unknown", GET_U_1(tptr + 6)),
1015 GET_U_1(tptr + 6));
1016 break;
1017
1018 case LLDP_PRIVATE_TIA_SUBTYPE_NETWORK_POLICY:
1019 if (tlv_len < 8) {
1020 return hexdump;
1021 }
1022 ND_PRINT("\n\t Application type [%s] (0x%02x)",
1023 tok2str(lldp_tia_application_type_values, "none", GET_U_1(tptr + 4)),
1024 GET_U_1(tptr + 4));
1025 ND_PRINT(", Flags [%s]", bittok2str(
1026 lldp_tia_network_policy_bits_values, "none", GET_U_1((tptr + 5))));
1027 ND_PRINT("\n\t Vlan id %u",
1028 LLDP_EXTRACT_NETWORK_POLICY_VLAN(GET_BE_U_2(tptr + 5)));
1029 ND_PRINT(", L2 priority %u",
1030 LLDP_EXTRACT_NETWORK_POLICY_L2_PRIORITY(GET_BE_U_2(tptr + 6)));
1031 ND_PRINT(", DSCP value %u",
1032 LLDP_EXTRACT_NETWORK_POLICY_DSCP(GET_BE_U_2(tptr + 6)));
1033 break;
1034
1035 case LLDP_PRIVATE_TIA_SUBTYPE_LOCAL_ID:
1036 if (tlv_len < 5) {
1037 return hexdump;
1038 }
1039 location_format = GET_U_1(tptr + 4);
1040 ND_PRINT("\n\t Location data format %s (0x%02x)",
1041 tok2str(lldp_tia_location_data_format_values, "unknown", location_format),
1042 location_format);
1043
1044 switch (location_format) {
1045 case LLDP_TIA_LOCATION_DATA_FORMAT_COORDINATE_BASED:
1046 if (tlv_len < 21) {
1047 return hexdump;
1048 }
1049 ND_PRINT("\n\t Latitude resolution %u, latitude value %" PRIu64,
1050 (GET_U_1(tptr + 5) >> 2),
1051 lldp_extract_latlon(ndo, tptr + 5));
1052 ND_PRINT("\n\t Longitude resolution %u, longitude value %" PRIu64,
1053 (GET_U_1(tptr + 10) >> 2),
1054 lldp_extract_latlon(ndo, tptr + 10));
1055 ND_PRINT("\n\t Altitude type %s (%u)",
1056 tok2str(lldp_tia_location_altitude_type_values, "unknown",GET_U_1(tptr + 15) >> 4),
1057 (GET_U_1(tptr + 15) >> 4));
1058 ND_PRINT("\n\t Altitude resolution %u, altitude value 0x%x",
1059 (GET_BE_U_2(tptr + 15)>>6)&0x3f,
1060 (GET_BE_U_4(tptr + 16) & 0x3fffffff));
1061 ND_PRINT("\n\t Datum %s (0x%02x)",
1062 tok2str(lldp_tia_location_datum_type_values, "unknown", GET_U_1(tptr + 20)),
1063 GET_U_1(tptr + 20));
1064 break;
1065
1066 case LLDP_TIA_LOCATION_DATA_FORMAT_CIVIC_ADDRESS:
1067 if (tlv_len < 6) {
1068 return hexdump;
1069 }
1070 lci_len = GET_U_1(tptr + 5);
1071 if (lci_len < 3) {
1072 return hexdump;
1073 }
1074 if (tlv_len < 7+lci_len) {
1075 return hexdump;
1076 }
1077 ND_PRINT("\n\t LCI length %u, LCI what %s (0x%02x), Country-code ",
1078 lci_len,
1079 tok2str(lldp_tia_location_lci_what_values, "unknown", GET_U_1(tptr + 6)),
1080 GET_U_1(tptr + 6));
1081
1082 /* Country code */
1083 nd_printjnp(ndo, tptr + 7, 2);
1084
1085 lci_len = lci_len-3;
1086 tptr = tptr + 9;
1087
1088 /* Decode each civic address element */
1089 while (lci_len > 0) {
1090 if (lci_len < 2) {
1091 return hexdump;
1092 }
1093 ca_type = GET_U_1(tptr);
1094 ca_len = GET_U_1(tptr + 1);
1095
1096 tptr += 2;
1097 lci_len -= 2;
1098
1099 ND_PRINT("\n\t CA type '%s' (%u), length %u: ",
1100 tok2str(lldp_tia_location_lci_catype_values, "unknown", ca_type),
1101 ca_type, ca_len);
1102
1103 /* basic sanity check */
1104 if ( ca_type == 0 || ca_len == 0) {
1105 return hexdump;
1106 }
1107 if (lci_len < ca_len) {
1108 return hexdump;
1109 }
1110
1111 nd_printjnp(ndo, tptr, ca_len);
1112 tptr += ca_len;
1113 lci_len -= ca_len;
1114 }
1115 break;
1116
1117 case LLDP_TIA_LOCATION_DATA_FORMAT_ECS_ELIN:
1118 ND_PRINT("\n\t ECS ELIN id ");
1119 nd_printjnp(ndo, tptr + 5, tlv_len - 5);
1120 break;
1121
1122 default:
1123 ND_PRINT("\n\t Location ID ");
1124 print_unknown_data(ndo, tptr + 5, "\n\t ", tlv_len - 5);
1125 }
1126 break;
1127
1128 case LLDP_PRIVATE_TIA_SUBTYPE_EXTENDED_POWER_MDI:
1129 if (tlv_len < 7) {
1130 return hexdump;
1131 }
1132 ND_PRINT("\n\t Power type [%s]",
1133 (GET_U_1(tptr + 4) & 0xC0 >> 6) ? "PD device" : "PSE device");
1134 ND_PRINT(", Power source [%s]",
1135 tok2str(lldp_tia_power_source_values, "none", (GET_U_1((tptr + 4)) & 0x30) >> 4));
1136 ND_PRINT("\n\t Power priority [%s] (0x%02x)",
1137 tok2str(lldp_tia_power_priority_values, "none", GET_U_1(tptr + 4) & 0x0f),
1138 GET_U_1(tptr + 4) & 0x0f);
1139 power_val = GET_BE_U_2(tptr + 5);
1140 if (power_val < LLDP_TIA_POWER_VAL_MAX) {
1141 ND_PRINT(", Power %.1f Watts", ((float)power_val) / 10);
1142 } else {
1143 ND_PRINT(", Power %u (Reserved)", power_val);
1144 }
1145 break;
1146
1147 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_HARDWARE_REV:
1148 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_FIRMWARE_REV:
1149 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SOFTWARE_REV:
1150 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_SERIAL_NUMBER:
1151 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MANUFACTURER_NAME:
1152 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_MODEL_NAME:
1153 case LLDP_PRIVATE_TIA_SUBTYPE_INVENTORY_ASSET_ID:
1154 ND_PRINT("\n\t %s ",
1155 tok2str(lldp_tia_inventory_values, "unknown", subtype));
1156 nd_printjnp(ndo, tptr + 4, tlv_len - 4);
1157 break;
1158
1159 default:
1160 hexdump = TRUE;
1161 break;
1162 }
1163
1164 return hexdump;
1165 }
1166
1167 /*
1168 * Print DCBX Protocol fields (V 1.01).
1169 */
1170 static int
lldp_private_dcbx_print(netdissect_options * ndo,const u_char * pptr,u_int len)1171 lldp_private_dcbx_print(netdissect_options *ndo,
1172 const u_char *pptr, u_int len)
1173 {
1174 int hexdump = FALSE;
1175 u_int subtype;
1176 uint16_t tval;
1177 uint16_t tlv;
1178 uint32_t i, pgval, uval;
1179 u_int tlen, tlv_type;
1180 uint16_t tlv_len;
1181 const u_char *tptr, *mptr;
1182
1183 if (len < 4) {
1184 return hexdump;
1185 }
1186 subtype = GET_U_1(pptr + 3);
1187
1188 ND_PRINT("\n\t %s Subtype (%u)",
1189 tok2str(lldp_dcbx_subtype_values, "unknown", subtype),
1190 subtype);
1191
1192 /* by passing old version */
1193 if (subtype == LLDP_DCBX_SUBTYPE_1)
1194 return TRUE;
1195
1196 tptr = pptr + 4;
1197 tlen = len - 4;
1198
1199 while (tlen >= sizeof(tlv)) {
1200
1201 ND_TCHECK_LEN(tptr, sizeof(tlv));
1202
1203 tlv = GET_BE_U_2(tptr);
1204
1205 tlv_type = LLDP_EXTRACT_TYPE(tlv);
1206 tlv_len = LLDP_EXTRACT_LEN(tlv);
1207 hexdump = FALSE;
1208
1209 tlen -= sizeof(tlv);
1210 tptr += sizeof(tlv);
1211
1212 /* loop check */
1213 if (!tlv_type || !tlv_len) {
1214 break;
1215 }
1216
1217 ND_TCHECK_LEN(tptr, tlv_len);
1218 if (tlen < tlv_len) {
1219 goto trunc;
1220 }
1221
1222 /* decode every tlv */
1223 switch (tlv_type) {
1224 case LLDP_DCBX_CONTROL_TLV:
1225 if (tlv_len < 10) {
1226 goto trunc;
1227 }
1228 ND_PRINT("\n\t Control - Protocol Control (type 0x%x, length %u)",
1229 LLDP_DCBX_CONTROL_TLV, tlv_len);
1230 ND_PRINT("\n\t Oper_Version: %u", GET_U_1(tptr));
1231 ND_PRINT("\n\t Max_Version: %u", GET_U_1(tptr + 1));
1232 ND_PRINT("\n\t Sequence Number: %u", GET_BE_U_4(tptr + 2));
1233 ND_PRINT("\n\t Acknowledgement Number: %u",
1234 GET_BE_U_4(tptr + 6));
1235 break;
1236 case LLDP_DCBX_PRIORITY_GROUPS_TLV:
1237 if (tlv_len < 17) {
1238 goto trunc;
1239 }
1240 ND_PRINT("\n\t Feature - Priority Group (type 0x%x, length %u)",
1241 LLDP_DCBX_PRIORITY_GROUPS_TLV, tlv_len);
1242 ND_PRINT("\n\t Oper_Version: %u", GET_U_1(tptr));
1243 ND_PRINT("\n\t Max_Version: %u", GET_U_1(tptr + 1));
1244 ND_PRINT("\n\t Info block(0x%02X): ", GET_U_1(tptr + 2));
1245 tval = GET_U_1(tptr + 2);
1246 ND_PRINT("Enable bit: %u, Willing bit: %u, Error Bit: %u",
1247 (tval & 0x80) ? 1 : 0, (tval & 0x40) ? 1 : 0,
1248 (tval & 0x20) ? 1 : 0);
1249 ND_PRINT("\n\t SubType: %u", GET_U_1(tptr + 3));
1250 ND_PRINT("\n\t Priority Allocation");
1251
1252 /*
1253 * Array of 8 4-bit priority group ID values; we fetch all
1254 * 32 bits and extract each nibble.
1255 */
1256 pgval = GET_BE_U_4(tptr + 4);
1257 for (i = 0; i <= 7; i++) {
1258 ND_PRINT("\n\t PgId_%u: %u",
1259 i, (pgval >> (28 - 4 * i)) & 0xF);
1260 }
1261 ND_PRINT("\n\t Priority Group Allocation");
1262 for (i = 0; i <= 7; i++)
1263 ND_PRINT("\n\t Pg percentage[%u]: %u", i,
1264 GET_U_1(tptr + 8 + i));
1265 ND_PRINT("\n\t NumTCsSupported: %u", GET_U_1(tptr + 8 + 8));
1266 break;
1267 case LLDP_DCBX_PRIORITY_FLOW_CONTROL_TLV:
1268 if (tlv_len < 6) {
1269 goto trunc;
1270 }
1271 ND_PRINT("\n\t Feature - Priority Flow Control");
1272 ND_PRINT(" (type 0x%x, length %u)",
1273 LLDP_DCBX_PRIORITY_FLOW_CONTROL_TLV, tlv_len);
1274 ND_PRINT("\n\t Oper_Version: %u", GET_U_1(tptr));
1275 ND_PRINT("\n\t Max_Version: %u", GET_U_1(tptr + 1));
1276 ND_PRINT("\n\t Info block(0x%02X): ", GET_U_1(tptr + 2));
1277 tval = GET_U_1(tptr + 2);
1278 ND_PRINT("Enable bit: %u, Willing bit: %u, Error Bit: %u",
1279 (tval & 0x80) ? 1 : 0, (tval & 0x40) ? 1 : 0,
1280 (tval & 0x20) ? 1 : 0);
1281 ND_PRINT("\n\t SubType: %u", GET_U_1(tptr + 3));
1282 tval = GET_U_1(tptr + 4);
1283 ND_PRINT("\n\t PFC Config (0x%02X)", GET_U_1(tptr + 4));
1284 for (i = 0; i <= 7; i++)
1285 ND_PRINT("\n\t Priority Bit %u: %s",
1286 i, (tval & (1 << i)) ? "Enabled" : "Disabled");
1287 ND_PRINT("\n\t NumTCPFCSupported: %u", GET_U_1(tptr + 5));
1288 break;
1289 case LLDP_DCBX_APPLICATION_TLV:
1290 if (tlv_len < 4) {
1291 goto trunc;
1292 }
1293 ND_PRINT("\n\t Feature - Application (type 0x%x, length %u)",
1294 LLDP_DCBX_APPLICATION_TLV, tlv_len);
1295 ND_PRINT("\n\t Oper_Version: %u", GET_U_1(tptr));
1296 ND_PRINT("\n\t Max_Version: %u", GET_U_1(tptr + 1));
1297 ND_PRINT("\n\t Info block(0x%02X): ", GET_U_1(tptr + 2));
1298 tval = GET_U_1(tptr + 2);
1299 ND_PRINT("Enable bit: %u, Willing bit: %u, Error Bit: %u",
1300 (tval & 0x80) ? 1 : 0, (tval & 0x40) ? 1 : 0,
1301 (tval & 0x20) ? 1 : 0);
1302 ND_PRINT("\n\t SubType: %u", GET_U_1(tptr + 3));
1303 tval = tlv_len - 4;
1304 mptr = tptr + 4;
1305 while (tval >= 6) {
1306 ND_PRINT("\n\t Application Value");
1307 ND_PRINT("\n\t Application Protocol ID: 0x%04x",
1308 GET_BE_U_2(mptr));
1309 uval = GET_BE_U_3(mptr + 2);
1310 ND_PRINT("\n\t SF (0x%x) Application Protocol ID is %s",
1311 (uval >> 22),
1312 (uval >> 22) ? "Socket Number" : "L2 EtherType");
1313 ND_PRINT("\n\t OUI: 0x%06x", uval & 0x3fffff);
1314 ND_PRINT("\n\t User Priority Map: 0x%02x",
1315 GET_U_1(mptr + 5));
1316 tval = tval - 6;
1317 mptr = mptr + 6;
1318 }
1319 break;
1320 default:
1321 hexdump = TRUE;
1322 break;
1323 }
1324
1325 /* do we also want to see a hex dump ? */
1326 if (ndo->ndo_vflag > 1 || (ndo->ndo_vflag && hexdump)) {
1327 print_unknown_data(ndo, tptr, "\n\t ", tlv_len);
1328 }
1329
1330 tlen -= tlv_len;
1331 tptr += tlv_len;
1332 }
1333
1334 trunc:
1335 return hexdump;
1336 }
1337
1338 static char *
lldp_network_addr_print(netdissect_options * ndo,const u_char * tptr,u_int len)1339 lldp_network_addr_print(netdissect_options *ndo, const u_char *tptr, u_int len)
1340 {
1341 uint8_t af;
1342 static char buf[BUFSIZE];
1343 const char * (*pfunc)(netdissect_options *, const u_char *);
1344
1345 if (len < 1)
1346 return NULL;
1347 len--;
1348 af = GET_U_1(tptr);
1349 switch (af) {
1350 case AFNUM_INET:
1351 if (len < sizeof(nd_ipv4))
1352 return NULL;
1353 pfunc = ipaddr_string;
1354 break;
1355 case AFNUM_INET6:
1356 if (len < sizeof(nd_ipv6))
1357 return NULL;
1358 pfunc = ip6addr_string;
1359 break;
1360 case AFNUM_802:
1361 if (len < MAC_ADDR_LEN)
1362 return NULL;
1363 pfunc = etheraddr_string;
1364 break;
1365 default:
1366 pfunc = NULL;
1367 break;
1368 }
1369
1370 if (!pfunc) {
1371 snprintf(buf, sizeof(buf), "AFI %s (%u), no AF printer !",
1372 tok2str(af_values, "Unknown", af), af);
1373 } else {
1374 snprintf(buf, sizeof(buf), "AFI %s (%u): %s",
1375 tok2str(af_values, "Unknown", af), af, (*pfunc)(ndo, tptr+1));
1376 }
1377
1378 return buf;
1379 }
1380
1381 static int
lldp_mgmt_addr_tlv_print(netdissect_options * ndo,const u_char * pptr,u_int len)1382 lldp_mgmt_addr_tlv_print(netdissect_options *ndo,
1383 const u_char *pptr, u_int len)
1384 {
1385 uint8_t mgmt_addr_len, intf_num_subtype, oid_len;
1386 const u_char *tptr;
1387 u_int tlen;
1388 char *mgmt_addr;
1389
1390 tlen = len;
1391 tptr = pptr;
1392
1393 if (tlen < 1) {
1394 return 0;
1395 }
1396 mgmt_addr_len = GET_U_1(tptr);
1397 tptr++;
1398 tlen--;
1399
1400 if (tlen < mgmt_addr_len) {
1401 return 0;
1402 }
1403
1404 mgmt_addr = lldp_network_addr_print(ndo, tptr, mgmt_addr_len);
1405 if (mgmt_addr == NULL) {
1406 return 0;
1407 }
1408 ND_PRINT("\n\t Management Address length %u, %s",
1409 mgmt_addr_len, mgmt_addr);
1410 tptr += mgmt_addr_len;
1411 tlen -= mgmt_addr_len;
1412
1413 if (tlen < LLDP_INTF_NUM_LEN) {
1414 return 0;
1415 }
1416
1417 intf_num_subtype = GET_U_1(tptr);
1418 ND_PRINT("\n\t %s Interface Numbering (%u): %u",
1419 tok2str(lldp_intf_numb_subtype_values, "Unknown", intf_num_subtype),
1420 intf_num_subtype,
1421 GET_BE_U_4(tptr + 1));
1422
1423 tptr += LLDP_INTF_NUM_LEN;
1424 tlen -= LLDP_INTF_NUM_LEN;
1425
1426 /*
1427 * The OID is optional.
1428 */
1429 if (tlen) {
1430 oid_len = GET_U_1(tptr);
1431
1432 if (tlen < 1U + oid_len) {
1433 return 0;
1434 }
1435 if (oid_len) {
1436 ND_PRINT("\n\t OID length %u", oid_len);
1437 nd_printjnp(ndo, tptr + 1, oid_len);
1438 }
1439 }
1440
1441 return 1;
1442 }
1443
1444 void
lldp_print(netdissect_options * ndo,const u_char * pptr,u_int len)1445 lldp_print(netdissect_options *ndo,
1446 const u_char *pptr, u_int len)
1447 {
1448 uint8_t subtype;
1449 uint16_t tlv, cap, ena_cap;
1450 u_int oui, tlen, hexdump, tlv_type, tlv_len;
1451 const u_char *tptr;
1452 char *network_addr;
1453
1454 ndo->ndo_protocol = "lldp";
1455 tptr = pptr;
1456 tlen = len;
1457
1458 ND_PRINT("LLDP, length %u", len);
1459
1460 while (tlen >= sizeof(tlv)) {
1461
1462 ND_TCHECK_LEN(tptr, sizeof(tlv));
1463
1464 tlv = GET_BE_U_2(tptr);
1465
1466 tlv_type = LLDP_EXTRACT_TYPE(tlv);
1467 tlv_len = LLDP_EXTRACT_LEN(tlv);
1468 hexdump = FALSE;
1469
1470 tlen -= sizeof(tlv);
1471 tptr += sizeof(tlv);
1472
1473 if (ndo->ndo_vflag) {
1474 ND_PRINT("\n\t%s TLV (%u), length %u",
1475 tok2str(lldp_tlv_values, "Unknown", tlv_type),
1476 tlv_type, tlv_len);
1477 }
1478
1479 /* infinite loop check */
1480 if (!tlv_type || !tlv_len) {
1481 break;
1482 }
1483
1484 ND_TCHECK_LEN(tptr, tlv_len);
1485 if (tlen < tlv_len) {
1486 goto trunc;
1487 }
1488
1489 switch (tlv_type) {
1490
1491 case LLDP_CHASSIS_ID_TLV:
1492 if (ndo->ndo_vflag) {
1493 if (tlv_len < 2) {
1494 goto trunc;
1495 }
1496 subtype = GET_U_1(tptr);
1497 ND_PRINT("\n\t Subtype %s (%u): ",
1498 tok2str(lldp_chassis_subtype_values, "Unknown", subtype),
1499 subtype);
1500
1501 switch (subtype) {
1502 case LLDP_CHASSIS_MAC_ADDR_SUBTYPE:
1503 if (tlv_len < 1+6) {
1504 goto trunc;
1505 }
1506 ND_PRINT("%s", GET_ETHERADDR_STRING(tptr + 1));
1507 break;
1508
1509 case LLDP_CHASSIS_INTF_NAME_SUBTYPE: /* fall through */
1510 case LLDP_CHASSIS_LOCAL_SUBTYPE:
1511 case LLDP_CHASSIS_CHASSIS_COMP_SUBTYPE:
1512 case LLDP_CHASSIS_INTF_ALIAS_SUBTYPE:
1513 case LLDP_CHASSIS_PORT_COMP_SUBTYPE:
1514 nd_printjnp(ndo, tptr + 1, tlv_len - 1);
1515 break;
1516
1517 case LLDP_CHASSIS_NETWORK_ADDR_SUBTYPE:
1518 network_addr = lldp_network_addr_print(ndo, tptr+1, tlv_len-1);
1519 if (network_addr == NULL) {
1520 goto trunc;
1521 }
1522 ND_PRINT("%s", network_addr);
1523 break;
1524
1525 default:
1526 hexdump = TRUE;
1527 break;
1528 }
1529 }
1530 break;
1531
1532 case LLDP_PORT_ID_TLV:
1533 if (ndo->ndo_vflag) {
1534 if (tlv_len < 2) {
1535 goto trunc;
1536 }
1537 subtype = GET_U_1(tptr);
1538 ND_PRINT("\n\t Subtype %s (%u): ",
1539 tok2str(lldp_port_subtype_values, "Unknown", subtype),
1540 subtype);
1541
1542 switch (subtype) {
1543 case LLDP_PORT_MAC_ADDR_SUBTYPE:
1544 if (tlv_len < 1+6) {
1545 goto trunc;
1546 }
1547 ND_PRINT("%s", GET_ETHERADDR_STRING(tptr + 1));
1548 break;
1549
1550 case LLDP_PORT_INTF_NAME_SUBTYPE: /* fall through */
1551 case LLDP_PORT_LOCAL_SUBTYPE:
1552 case LLDP_PORT_AGENT_CIRC_ID_SUBTYPE:
1553 case LLDP_PORT_INTF_ALIAS_SUBTYPE:
1554 case LLDP_PORT_PORT_COMP_SUBTYPE:
1555 nd_printjnp(ndo, tptr + 1, tlv_len - 1);
1556 break;
1557
1558 case LLDP_PORT_NETWORK_ADDR_SUBTYPE:
1559 network_addr = lldp_network_addr_print(ndo, tptr+1, tlv_len-1);
1560 if (network_addr == NULL) {
1561 goto trunc;
1562 }
1563 ND_PRINT("%s", network_addr);
1564 break;
1565
1566 default:
1567 hexdump = TRUE;
1568 break;
1569 }
1570 }
1571 break;
1572
1573 case LLDP_TTL_TLV:
1574 if (ndo->ndo_vflag) {
1575 if (tlv_len < 2) {
1576 goto trunc;
1577 }
1578 ND_PRINT(": TTL %us", GET_BE_U_2(tptr));
1579 }
1580 break;
1581
1582 case LLDP_PORT_DESCR_TLV:
1583 if (ndo->ndo_vflag) {
1584 ND_PRINT(": ");
1585 nd_printjnp(ndo, tptr, tlv_len);
1586 }
1587 break;
1588
1589 case LLDP_SYSTEM_NAME_TLV:
1590 /*
1591 * The system name is also print in non-verbose mode
1592 * similar to the CDP printer.
1593 */
1594 ND_PRINT(": ");
1595 nd_printjnp(ndo, tptr, tlv_len);
1596 break;
1597
1598 case LLDP_SYSTEM_DESCR_TLV:
1599 if (ndo->ndo_vflag) {
1600 ND_PRINT("\n\t ");
1601 nd_printjnp(ndo, tptr, tlv_len);
1602 }
1603 break;
1604
1605 case LLDP_SYSTEM_CAP_TLV:
1606 if (ndo->ndo_vflag) {
1607 /*
1608 * XXX - IEEE Std 802.1AB-2009 says the first octet
1609 * if a chassis ID subtype, with the system
1610 * capabilities and enabled capabilities following
1611 * it.
1612 */
1613 if (tlv_len < 4) {
1614 goto trunc;
1615 }
1616 cap = GET_BE_U_2(tptr);
1617 ena_cap = GET_BE_U_2(tptr + 2);
1618 ND_PRINT("\n\t System Capabilities [%s] (0x%04x)",
1619 bittok2str(lldp_cap_values, "none", cap), cap);
1620 ND_PRINT("\n\t Enabled Capabilities [%s] (0x%04x)",
1621 bittok2str(lldp_cap_values, "none", ena_cap), ena_cap);
1622 }
1623 break;
1624
1625 case LLDP_MGMT_ADDR_TLV:
1626 if (ndo->ndo_vflag) {
1627 if (!lldp_mgmt_addr_tlv_print(ndo, tptr, tlv_len)) {
1628 goto trunc;
1629 }
1630 }
1631 break;
1632
1633 case LLDP_PRIVATE_TLV:
1634 if (ndo->ndo_vflag) {
1635 if (tlv_len < 3) {
1636 goto trunc;
1637 }
1638 oui = GET_BE_U_3(tptr);
1639 ND_PRINT(": OUI %s (0x%06x)", tok2str(oui_values, "Unknown", oui), oui);
1640
1641 switch (oui) {
1642 case OUI_IEEE_8021_PRIVATE:
1643 hexdump = lldp_private_8021_print(ndo, tptr, tlv_len);
1644 break;
1645 case OUI_IEEE_8023_PRIVATE:
1646 hexdump = lldp_private_8023_print(ndo, tptr, tlv_len);
1647 break;
1648 case OUI_IANA:
1649 hexdump = lldp_private_iana_print(ndo, tptr, tlv_len);
1650 break;
1651 case OUI_TIA:
1652 hexdump = lldp_private_tia_print(ndo, tptr, tlv_len);
1653 break;
1654 case OUI_DCBX:
1655 hexdump = lldp_private_dcbx_print(ndo, tptr, tlv_len);
1656 break;
1657 default:
1658 hexdump = TRUE;
1659 break;
1660 }
1661 }
1662 break;
1663
1664 default:
1665 hexdump = TRUE;
1666 break;
1667 }
1668
1669 /* do we also want to see a hex dump ? */
1670 if (ndo->ndo_vflag > 1 || (ndo->ndo_vflag && hexdump)) {
1671 print_unknown_data(ndo, tptr, "\n\t ", tlv_len);
1672 }
1673
1674 tlen -= tlv_len;
1675 tptr += tlv_len;
1676 }
1677 return;
1678 trunc:
1679 nd_print_trunc(ndo);
1680 }
1681