Set the svn:eol-style property on all text files to "native", so that
[obnox/wireshark/wip.git] / packet-slowprotocols.c
1 /* packet-slowprotocols.c
2  * Routines for EtherType (0x8809) Slow Protocols disassembly.
3  *
4  * $Id$
5  *
6  * Copyright 2002 Steve Housley <steve_housley@3com.com>
7  *
8  * Ethereal - Network traffic analyzer
9  * By Gerald Combs <gerald@ethereal.com>
10  * Copyright 1998 Gerald Combs
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License
14  * as published by the Free Software Foundation; either version 2
15  * of the License, or (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
25  */
26
27  /* *** WARNING!! *** Only a dissector for LACPDU (Link Aggregation Control
28   * Protocol Data Unit) disassembly has currently been implemented.
29   */
30
31 #ifdef HAVE_CONFIG_H
32 # include "config.h"
33 #endif
34
35 #include <stdio.h>
36 #include <string.h>
37 #include <glib.h>
38 #include <epan/packet.h>
39 #include "etypes.h"
40 #include "llcsaps.h"
41 #include "ppptypes.h"
42 #include <epan/resolv.h>
43
44 /* Offsets of fields within a LACPDU */
45
46 #define LACPDU_SUBTYPE                          0
47 #define LACPDU_VERSION_NUMBER                   1
48
49 #define LACPDU_ACTOR_TYPE                       2
50 #define LACPDU_ACTOR_INFO_LEN                   3
51 #define LACPDU_ACTOR_SYS_PRIORITY               4
52 #define LACPDU_ACTOR_SYSTEM                     6
53 #define LACPDU_ACTOR_KEY                        12
54 #define LACPDU_ACTOR_PORT_PRIORITY              14
55 #define LACPDU_ACTOR_PORT                       16
56 #define LACPDU_ACTOR_STATE                      18
57 #define LACPDU_ACTOR_RESERVED                   19
58
59 #define LACPDU_PARTNER_TYPE                     22
60 #define LACPDU_PARTNER_INFO_LEN                 23
61 #define LACPDU_PARTNER_SYS_PRIORITY             24
62 #define LACPDU_PARTNER_SYSTEM                   26
63 #define LACPDU_PARTNER_KEY                      32
64 #define LACPDU_PARTNER_PORT_PRIORITY            34
65 #define LACPDU_PARTNER_PORT                     36
66 #define LACPDU_PARTNER_STATE                    38
67 #define LACPDU_PARTNER_RESERVED                 39
68
69 #define LACPDU_COLL_TYPE                        42
70 #define LACPDU_COLL_INFO_LEN                    43
71 #define LACPDU_COLL_MAX_DELAY                   44
72 #define LACPDU_COLL_RESERVED                    46
73
74 #define LACPDU_TERM_TYPE                        58
75 #define LACPDU_TERM_LEN                         59
76 #define LACPDU_TERM_RESERVED                    60
77
78 /* Actor and Partner Flag bits */
79
80 #define LACPDU_FLAGS_ACTIVITY           0x01
81 #define LACPDU_FLAGS_TIMEOUT            0x02
82 #define LACPDU_FLAGS_AGGREGATION        0x04
83 #define LACPDU_FLAGS_SYNC               0x08
84 #define LACPDU_FLAGS_COLLECTING         0x10
85 #define LACPDU_FLAGS_DISTRIB            0x20
86 #define LACPDU_FLAGS_DEFAULTED          0x40
87 #define LACPDU_FLAGS_EXPIRED            0x80
88
89 /* Initialise the protocol and registered fields */
90
91 static int proto_lacpdu = -1;
92
93 static int hf_lacpdu_subtype = -1;
94 static int hf_lacpdu_version_number = -1;
95
96 static int hf_lacpdu_actor_type = -1;
97 static int hf_lacpdu_actor_info_len = -1;
98 static int hf_lacpdu_actor_sys_priority = -1;
99 static int hf_lacpdu_actor_sys = -1;
100 static int hf_lacpdu_actor_key = -1;
101 static int hf_lacpdu_actor_port_priority = -1;
102 static int hf_lacpdu_actor_port = -1;
103 static int hf_lacpdu_actor_state = -1;
104 static int hf_lacpdu_flags_a_activity = -1;
105 static int hf_lacpdu_flags_a_timeout = -1;
106 static int hf_lacpdu_flags_a_aggregation = -1;
107 static int hf_lacpdu_flags_a_sync = -1;
108 static int hf_lacpdu_flags_a_collecting = -1;
109 static int hf_lacpdu_flags_a_distrib = -1;
110 static int hf_lacpdu_flags_a_defaulted = -1;
111 static int hf_lacpdu_flags_a_expired = -1;
112 static int hf_lacpdu_actor_reserved = -1;
113
114 static int hf_lacpdu_partner_type = -1;
115 static int hf_lacpdu_partner_info_len = -1;
116 static int hf_lacpdu_partner_sys_priority = -1;
117 static int hf_lacpdu_partner_sys = -1;
118 static int hf_lacpdu_partner_key = -1;
119 static int hf_lacpdu_partner_port_priority = -1;
120 static int hf_lacpdu_partner_port = -1;
121 static int hf_lacpdu_partner_state = -1;
122 static int hf_lacpdu_flags_p_activity = -1;
123 static int hf_lacpdu_flags_p_timeout = -1;
124 static int hf_lacpdu_flags_p_aggregation = -1;
125 static int hf_lacpdu_flags_p_sync = -1;
126 static int hf_lacpdu_flags_p_collecting = -1;
127 static int hf_lacpdu_flags_p_distrib = -1;
128 static int hf_lacpdu_flags_p_defaulted = -1;
129 static int hf_lacpdu_flags_p_expired = -1;
130 static int hf_lacpdu_partner_reserved = -1;
131
132 static int hf_lacpdu_coll_type = -1;
133 static int hf_lacpdu_coll_info_len = -1;
134 static int hf_lacpdu_coll_max_delay = -1;
135 static int hf_lacpdu_coll_reserved = -1;
136
137 static int hf_lacpdu_term_type = -1;
138 static int hf_lacpdu_term_len = -1;
139 static int hf_lacpdu_term_reserved = -1;
140
141 /* Initialise the subtree pointers */
142
143 static gint ett_lacpdu = -1;
144 static gint ett_lacpdu_a_flags = -1;
145 static gint ett_lacpdu_p_flags = -1;
146
147 /* General declarations and macros */
148
149 #define LACP_SUBTYPE 0x1
150
151 static const char initial_sep[] = " (";
152 static const char cont_sep[] = ", ";
153
154 #define APPEND_BOOLEAN_FLAG(flag, item, string) \
155         if(flag){                                                       \
156                 if(item)                                                \
157                         proto_item_append_text(item, string, sep);      \
158                 sep = cont_sep;                                         \
159         }
160
161 /* Code to actually dissect the LACPDU packets */
162 static void
163 dissect_lacpdu(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
164 {
165       guint16 raw_word;
166       guint8  raw_octet;
167
168       guint8  flags;
169
170       const guint8 *a_sys;
171       const guint8 *p_sys;
172       const guint8 *resv_bytes;
173
174       proto_tree *lacpdu_tree;
175       proto_item *lacpdu_item;
176       proto_tree *actor_flags_tree;
177       proto_item *actor_flags_item;
178       proto_tree *partner_flags_tree;
179       proto_item *partner_flags_item;
180
181
182       const char *sep;
183
184
185       if (check_col(pinfo->cinfo, COL_PROTOCOL))
186       {
187             col_set_str(pinfo->cinfo, COL_PROTOCOL, "LACP"); /* LACP Protocol */
188       }
189
190       if (check_col(pinfo->cinfo, COL_INFO))
191       {
192             col_clear(pinfo->cinfo, COL_INFO);
193       }
194
195       if (tree)
196           {
197             /* Add LACP Heading */
198             lacpdu_item = proto_tree_add_protocol_format(tree, proto_lacpdu, tvb,
199                                 0, -1, "Link Aggregation Control Protocol");
200             lacpdu_tree = proto_item_add_subtree(lacpdu_item, ett_lacpdu);
201
202             /* Version Number */
203             raw_octet = tvb_get_guint8(tvb, LACPDU_VERSION_NUMBER);
204             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_version_number, tvb,
205                                 LACPDU_VERSION_NUMBER, 1, raw_octet);
206
207             if (check_col(pinfo->cinfo, COL_INFO))
208             {
209                 col_append_fstr(pinfo->cinfo, COL_INFO, "Version %d.  ", raw_octet);
210             }
211
212             /* Actor Type */
213             raw_octet = tvb_get_guint8(tvb, LACPDU_ACTOR_TYPE);
214             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_type, tvb,
215                                 LACPDU_ACTOR_TYPE, 1, raw_octet);
216
217             /* Actor Info Length */
218             raw_octet = tvb_get_guint8(tvb, LACPDU_ACTOR_INFO_LEN);
219             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_info_len, tvb,
220                                 LACPDU_ACTOR_INFO_LEN, 1, raw_octet);
221
222             /* Actor System Priority */
223
224             raw_word = tvb_get_ntohs(tvb, LACPDU_ACTOR_SYS_PRIORITY);
225             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_sys_priority, tvb,
226                                 LACPDU_ACTOR_SYS_PRIORITY, 2, raw_word);
227             /* Actor System */
228
229             a_sys = tvb_get_ptr(tvb, LACPDU_ACTOR_SYSTEM , 6);
230             proto_tree_add_ether(lacpdu_tree, hf_lacpdu_actor_sys, tvb,
231                                 LACPDU_ACTOR_SYSTEM, 6, a_sys);
232
233             /* Actor Key */
234
235             raw_word = tvb_get_ntohs(tvb, LACPDU_ACTOR_KEY);
236             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_key, tvb,
237                                 LACPDU_ACTOR_KEY, 2, raw_word);
238
239             /* Actor Port Priority */
240
241             raw_word = tvb_get_ntohs(tvb, LACPDU_ACTOR_PORT_PRIORITY);
242             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_port_priority, tvb,
243                                 LACPDU_ACTOR_PORT_PRIORITY, 2, raw_word);
244
245             /* Actor Port */
246
247             raw_word = tvb_get_ntohs(tvb, LACPDU_ACTOR_PORT);
248             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_port, tvb,
249                                 LACPDU_ACTOR_PORT, 2, raw_word);
250
251             if (check_col(pinfo->cinfo, COL_INFO))
252             {
253                 col_append_fstr(pinfo->cinfo, COL_INFO, "Actor Port = %d ", raw_word);
254             }
255
256             /* Actor State */
257
258             flags = tvb_get_guint8(tvb, LACPDU_ACTOR_STATE);
259             actor_flags_item = proto_tree_add_uint(lacpdu_tree, hf_lacpdu_actor_state, tvb,
260                                 LACPDU_ACTOR_STATE, 1, flags);
261             actor_flags_tree = proto_item_add_subtree(actor_flags_item, ett_lacpdu_a_flags);
262
263             sep = initial_sep;
264
265             /* Activity Flag */
266
267             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_ACTIVITY, actor_flags_item,
268                                 "%sActivity");
269             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_activity, tvb,
270                                 LACPDU_ACTOR_STATE, 1, flags);
271
272             /* Timeout Flag */
273
274             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_TIMEOUT, actor_flags_item,
275                                 "%sTimeout");
276             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_timeout, tvb,
277                                 LACPDU_ACTOR_STATE, 1, flags);
278
279             /* Aggregation Flag */
280
281             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_AGGREGATION, actor_flags_item,
282                                 "%sAggregation");
283             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_aggregation, tvb,
284                                 LACPDU_ACTOR_STATE, 1, flags);
285
286             /* Synchronization Flag */
287
288             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_SYNC, actor_flags_item,
289                                 "%sSynchronization");
290             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_sync, tvb,
291                                 LACPDU_ACTOR_STATE, 1, flags);
292
293             /* Collecting Flag */
294
295             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_COLLECTING, actor_flags_item,
296                                 "%sCollecting");
297             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_collecting, tvb,
298                                 LACPDU_ACTOR_STATE, 1, flags);
299
300
301             /* Distributing Flag */
302
303             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_DISTRIB, actor_flags_item,
304                                 "%sDistributing");
305             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_distrib, tvb,
306                                 LACPDU_ACTOR_STATE, 1, flags);
307
308             /* Defaulted Flag */
309
310             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_DEFAULTED, actor_flags_item,
311                                 "%sDefaulted");
312             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_defaulted, tvb,
313                                 LACPDU_ACTOR_STATE, 1, flags);
314
315             /* Expired Flag */
316
317             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_EXPIRED, actor_flags_item,
318                                 "%sExpired");
319             proto_tree_add_boolean(actor_flags_tree, hf_lacpdu_flags_a_expired, tvb,
320                                 LACPDU_ACTOR_STATE, 1, flags);
321
322             sep = cont_sep;
323             if (sep != initial_sep)
324             {
325                 /* We put something in; put in the terminating ")" */
326                 proto_item_append_text(actor_flags_item, ")");
327             }
328
329             /* Actor Reserved */
330
331             resv_bytes = tvb_get_ptr(tvb, LACPDU_ACTOR_RESERVED, 3);
332             proto_tree_add_bytes(lacpdu_tree, hf_lacpdu_actor_reserved, tvb,
333                                 LACPDU_ACTOR_RESERVED, 3, resv_bytes);
334
335
336             /* Partner Type */
337             raw_octet = tvb_get_guint8(tvb, LACPDU_PARTNER_TYPE);
338             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_type, tvb,
339                                 LACPDU_PARTNER_TYPE, 1, raw_octet);
340
341             /* Partner Info Length */
342             raw_octet = tvb_get_guint8(tvb, LACPDU_PARTNER_INFO_LEN);
343             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_info_len, tvb,
344                                 LACPDU_PARTNER_INFO_LEN, 1, raw_octet);
345
346             /* Partner System Priority */
347
348             raw_word = tvb_get_ntohs(tvb, LACPDU_PARTNER_SYS_PRIORITY);
349             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_sys_priority, tvb,
350                                 LACPDU_PARTNER_SYS_PRIORITY, 2, raw_word);
351
352             /* Partner System */
353
354             p_sys = tvb_get_ptr(tvb, LACPDU_PARTNER_SYSTEM, 6);
355             proto_tree_add_ether(lacpdu_tree, hf_lacpdu_partner_sys, tvb,
356                                 LACPDU_PARTNER_SYSTEM, 6, p_sys);
357
358             /* Partner Key */
359
360             raw_word = tvb_get_ntohs(tvb, LACPDU_PARTNER_KEY);
361             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_key, tvb,
362                                 LACPDU_PARTNER_KEY, 2, raw_word);
363
364             /* Partner Port Priority */
365
366             raw_word = tvb_get_ntohs(tvb, LACPDU_PARTNER_PORT_PRIORITY);
367             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_port_priority, tvb,
368                                 LACPDU_PARTNER_PORT_PRIORITY, 2, raw_word);
369
370             /* Partner Port */
371
372             raw_word = tvb_get_ntohs(tvb, LACPDU_PARTNER_PORT);
373             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_port, tvb,
374                                 LACPDU_PARTNER_PORT, 2, raw_word);
375
376             if (check_col(pinfo->cinfo, COL_INFO))
377             {
378                 col_append_fstr(pinfo->cinfo, COL_INFO, "Partner Port = %d ", raw_word);
379             }
380
381             /* Partner State */
382
383             flags = tvb_get_guint8(tvb, LACPDU_PARTNER_STATE);
384             partner_flags_item = proto_tree_add_uint(lacpdu_tree, hf_lacpdu_partner_state, tvb,
385                                 LACPDU_PARTNER_STATE, 1, flags);
386             partner_flags_tree = proto_item_add_subtree(partner_flags_item, ett_lacpdu_p_flags);
387
388             sep = initial_sep;
389
390             /* Activity Flag */
391
392             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_ACTIVITY, partner_flags_item,
393                                 "%sActivity");
394             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_activity, tvb,
395                                 LACPDU_PARTNER_STATE, 1, flags);
396
397             /* Timeout Flag */
398
399             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_TIMEOUT, partner_flags_item,
400                                 "%sTimeout");
401             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_timeout, tvb,
402                                 LACPDU_PARTNER_STATE, 1, flags);
403
404             /* Aggregation Flag */
405
406             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_AGGREGATION, partner_flags_item,
407                                 "%sAggregation");
408             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_aggregation, tvb,
409                                 LACPDU_PARTNER_STATE, 1, flags);
410
411             /* Synchronization Flag */
412
413             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_SYNC, partner_flags_item,
414                                 "%sSynchronization");
415             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_sync, tvb,
416                                 LACPDU_PARTNER_STATE, 1, flags);
417
418             /* Collecting Flag */
419
420             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_COLLECTING, partner_flags_item,
421                                 "%sCollecting");
422             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_collecting, tvb,
423                                 LACPDU_PARTNER_STATE, 1, flags);
424
425
426             /* Distributing Flag */
427
428             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_DISTRIB, partner_flags_item,
429                                 "%sDistributing");
430             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_distrib, tvb,
431                                 LACPDU_PARTNER_STATE, 1, flags);
432
433             /* Defaulted Flag */
434
435             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_DEFAULTED, partner_flags_item,
436                                 "%sDefaulted");
437             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_defaulted, tvb,
438                                 LACPDU_PARTNER_STATE, 1, flags);
439
440             /* Expired Flag */
441
442             APPEND_BOOLEAN_FLAG(flags & LACPDU_FLAGS_EXPIRED, partner_flags_item,
443                                 "%sExpired");
444             proto_tree_add_boolean(partner_flags_tree, hf_lacpdu_flags_p_expired, tvb,
445                                 LACPDU_PARTNER_STATE, 1, flags);
446
447             sep = cont_sep;
448             if (sep != initial_sep)
449             {
450                 /* We put something in; put in the terminating ")" */
451                 proto_item_append_text(partner_flags_item, ")");
452             }
453
454             /* Partner Reserved */
455
456             resv_bytes = tvb_get_ptr(tvb, LACPDU_PARTNER_RESERVED, 3);
457             proto_tree_add_bytes(lacpdu_tree, hf_lacpdu_partner_reserved, tvb,
458                                 LACPDU_PARTNER_RESERVED, 3, resv_bytes);
459
460
461             /* Collector Type */
462             raw_octet = tvb_get_guint8(tvb, LACPDU_COLL_TYPE);
463             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_coll_type, tvb,
464                                 LACPDU_COLL_TYPE, 1, raw_octet);
465
466             /* Collector Info Length */
467             raw_octet = tvb_get_guint8(tvb, LACPDU_COLL_INFO_LEN);
468             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_coll_info_len, tvb,
469                                 LACPDU_COLL_INFO_LEN, 1, raw_octet);
470
471             /* Collector Max Delay */
472
473             raw_word = tvb_get_ntohs(tvb, LACPDU_COLL_MAX_DELAY);
474             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_coll_max_delay, tvb,
475                                 LACPDU_COLL_MAX_DELAY, 2, raw_word);
476
477                 /* Collector Reserved */
478
479             resv_bytes = tvb_get_ptr(tvb, LACPDU_COLL_RESERVED, 12);
480             proto_tree_add_bytes(lacpdu_tree, hf_lacpdu_coll_reserved, tvb,
481                                 LACPDU_COLL_RESERVED, 12, resv_bytes);
482
483             /* Terminator Type */
484             raw_octet = tvb_get_guint8(tvb, LACPDU_TERM_TYPE);
485             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_term_type, tvb,
486                                 LACPDU_TERM_TYPE, 1, raw_octet);
487
488             /* Terminator Info Length */
489             raw_octet = tvb_get_guint8(tvb, LACPDU_TERM_LEN);
490             proto_tree_add_uint(lacpdu_tree, hf_lacpdu_term_len, tvb,
491                                 LACPDU_TERM_LEN, 1, raw_octet);
492
493             /* Terminator Reserved */
494
495             resv_bytes = tvb_get_ptr(tvb, LACPDU_TERM_RESERVED, 50);
496             proto_tree_add_bytes(lacpdu_tree, hf_lacpdu_term_reserved, tvb,
497                                 LACPDU_TERM_RESERVED, 50, resv_bytes);
498       }
499 }
500
501
502 /* Code to dissect the Slow Protocol packets */
503 static void
504 dissect_slow_protocols(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
505 {
506       guint8 raw_octet;
507
508       if (tree)
509       {
510
511                 /* Get the Slow Protocol Subtype value */
512                 raw_octet = tvb_get_guint8(tvb, LACPDU_SUBTYPE);
513
514                 if (raw_octet != LACP_SUBTYPE)
515                 {
516                         /* This is not a LACPDU. Do not disassemble. */
517                         /* Requires implementation at a later date. */
518                         if (check_col(pinfo->cinfo, COL_PROTOCOL))
519                         {
520                                 col_set_str(pinfo->cinfo, COL_PROTOCOL, "Slow Protocols"); /* Slow Protocols */
521                         }
522
523                         /* Display the subtype value to aid the user. */
524                         if (check_col(pinfo->cinfo, COL_INFO))
525                         {
526                                 col_add_fstr(pinfo->cinfo, COL_INFO, "Subtype = %u.", raw_octet);
527                         }
528                         return;
529                 }
530       }
531
532       /* This is a LACPDU so decode it! */
533       dissect_lacpdu(tvb, pinfo, tree);
534 }
535
536
537
538 /* Register the protocol with Ethereal */
539
540 static const value_string subtype_vals[] = {
541         { 1, "LACP" },
542         { 2, "Marker Protocol" },
543         { 0, NULL }
544 };
545
546 static const true_false_string yesno = {
547         "Yes",
548         "No"
549 };
550
551 void
552 proto_register_lacpdu(void)
553 {
554 /* Setup list of header fields */
555
556   static hf_register_info hf[] = {
557
558     { &hf_lacpdu_subtype,
559       { "Subtype",      "lacp.subtype",
560         FT_UINT8,       BASE_HEX,       VALS(subtype_vals),     0x0,
561         "The specific Slow Protocol being used", HFILL }},
562
563     { &hf_lacpdu_version_number,
564       { "LACP Version Number",  "lacp.version",
565         FT_UINT8,       BASE_HEX,       NULL,   0x0,
566         "Identifies the LACP version", HFILL }},
567
568     { &hf_lacpdu_actor_type,
569       { "Actor Information",    "lacp.actorInfo",
570         FT_UINT8,       BASE_HEX,       NULL,   0x0,
571         "TLV type = Actor", HFILL }},
572
573     { &hf_lacpdu_actor_info_len,
574       { "Actor Information Length",                     "lacp.actorInfoLen",
575         FT_UINT8,       BASE_HEX,       NULL,   0x0,
576         "The length of the Actor TLV", HFILL }},
577
578     { &hf_lacpdu_actor_sys_priority,
579       { "Actor System Priority",  "lacp.actorSysPriority",
580         FT_UINT16,      BASE_DEC,       NULL,   0x0,
581         "The priority assigned to this System by management or admin", HFILL }},
582
583     { &hf_lacpdu_actor_sys,
584       { "Actor System",                 "lacp.actorSystem",
585         FT_ETHER,       BASE_NONE,      NULL,   0x0,
586         "The Actor's System ID encoded as a MAC address", HFILL }},
587
588     { &hf_lacpdu_actor_key,
589       { "Actor Key",                    "lacp.actorKey",
590         FT_UINT16,      BASE_DEC,       NULL,   0x0,
591         "The operational Key value assigned to the port by the Actor", HFILL }},
592
593     { &hf_lacpdu_actor_port_priority,
594       { "Actor Port Priority",                  "lacp.actorPortPriority",
595         FT_UINT16,      BASE_DEC,       NULL,   0x0,
596         "The priority assigned to the port by the Actor (via Management or Admin)", HFILL }},
597
598     { &hf_lacpdu_actor_port,
599       { "Actor Port",                   "lacp.actorPort",
600         FT_UINT16,      BASE_DEC,       NULL,   0x0,
601         "The port number assigned to the port by the Actor (via Management or Admin)", HFILL }},
602
603     { &hf_lacpdu_actor_state,
604       { "Actor State",                  "lacp.actorState",
605         FT_UINT8,       BASE_HEX,       NULL,   0x0,
606         "The Actor's state variables for the port, encoded as bits within a single octet", HFILL }},
607
608     { &hf_lacpdu_flags_a_activity,
609       { "LACP Activity",                "lacp.actorState.activity",
610         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_ACTIVITY,
611         "Activity control value for this link. Active = 1, Passive = 0", HFILL }},
612
613     { &hf_lacpdu_flags_a_timeout,
614       { "LACP Timeout",         "lacp.actorState.timeout",
615         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_TIMEOUT,
616         "Timeout control value for this link. Short Timeout = 1, Long Timeout = 0", HFILL }},
617
618
619     { &hf_lacpdu_flags_a_aggregation,
620       { "Aggregation",          "lacp.actorState.aggregation",
621         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_AGGREGATION,
622         "Aggregatable = 1, Individual = 0", HFILL }},
623
624
625     { &hf_lacpdu_flags_a_sync,
626       { "Synchronization",              "lacp.actorState.synchronization",
627         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_SYNC,
628         "In Sync = 1, Out of Sync = 0", HFILL }},
629
630
631     { &hf_lacpdu_flags_a_collecting,
632       { "Collecting",           "lacp.actorState.collecting",
633         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_COLLECTING,
634         "Collection of incoming frames is: Enabled = 1, Disabled = 0", HFILL }},
635
636
637     { &hf_lacpdu_flags_a_distrib,
638       { "Distributing",         "lacp.actorState.distributing",
639         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_DISTRIB,
640         "Distribution of outgoing frames is: Enabled = 1, Disabled = 0", HFILL }},
641
642
643
644     { &hf_lacpdu_flags_a_defaulted,
645       { "Defaulted",            "lacp.actorState.defaulted",
646         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_DEFAULTED,
647         "1 = Actor Rx machine is using DEFAULT Partner info, 0 = using info in Rx'd LACPDU", HFILL }},
648
649
650     { &hf_lacpdu_flags_a_expired,
651       { "Expired",              "lacp.actorState.expired",
652         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_EXPIRED,
653         "1 = Actor Rx machine is EXPIRED, 0 = is NOT EXPIRED", HFILL }},
654
655
656     { &hf_lacpdu_actor_reserved,
657       { "Reserved",             "lacp.reserved",
658         FT_BYTES,       BASE_NONE,      NULL,   0x0,
659         "", HFILL }},
660
661     { &hf_lacpdu_partner_type,
662       { "Partner Information",  "lacp.partnerInfo",
663         FT_UINT8,       BASE_HEX,       NULL,   0x0,
664         "TLV type = Partner", HFILL }},
665
666     { &hf_lacpdu_partner_info_len,
667       { "Partner Information Length",                   "lacp.partnerInfoLen",
668         FT_UINT8,       BASE_HEX,       NULL,   0x0,
669         "The length of the Partner TLV", HFILL }},
670
671     { &hf_lacpdu_partner_sys_priority,
672       { "Partner System Priority",  "lacp.partnerSysPriority",
673         FT_UINT16,      BASE_DEC,       NULL,   0x0,
674         "The priority assigned to the Partner System by management or admin", HFILL }},
675
676     { &hf_lacpdu_partner_sys,
677       { "Partner System",                       "lacp.partnerSystem",
678         FT_ETHER,       BASE_NONE,      NULL,   0x0,
679         "The Partner's System ID encoded as a MAC address", HFILL }},
680
681     { &hf_lacpdu_partner_key,
682       { "Partner Key",                  "lacp.partnerKey",
683         FT_UINT16,      BASE_DEC,       NULL,   0x0,
684         "The operational Key value assigned to the port associated with this link by the Partner", HFILL }},
685
686     { &hf_lacpdu_partner_port_priority,
687       { "Partner Port Priority",                        "lacp.partnerPortPriority",
688         FT_UINT16,      BASE_DEC,       NULL,   0x0,
689         "The priority assigned to the port by the Partner (via Management or Admin)", HFILL }},
690
691     { &hf_lacpdu_partner_port,
692       { "Partner Port",                 "lacp.partnerPort",
693         FT_UINT16,      BASE_DEC,       NULL,   0x0,
694         "The port number associated with this link assigned to the port by the Partner (via Management or Admin)", HFILL }},
695
696     { &hf_lacpdu_partner_state,
697       { "Partner State",                        "lacp.partnerState",
698         FT_UINT8,       BASE_HEX,       NULL,   0x0,
699         "The Partner's state variables for the port, encoded as bits within a single octet", HFILL }},
700
701     { &hf_lacpdu_flags_p_activity,
702       { "LACP Activity",                "lacp.partnerState.activity",
703         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_ACTIVITY,
704         "Activity control value for this link. Active = 1, Passive = 0", HFILL }},
705
706     { &hf_lacpdu_flags_p_timeout,
707       { "LACP Timeout",         "lacp.partnerState.timeout",
708         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_TIMEOUT,
709         "Timeout control value for this link. Short Timeout = 1, Long Timeout = 0", HFILL }},
710
711
712     { &hf_lacpdu_flags_p_aggregation,
713       { "Aggregation",          "lacp.partnerState.aggregation",
714         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_AGGREGATION,
715         "Aggregatable = 1, Individual = 0", HFILL }},
716
717
718     { &hf_lacpdu_flags_p_sync,
719       { "Synchronization",              "lacp.partnerState.synchronization",
720         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_SYNC,
721         "In Sync = 1, Out of Sync = 0", HFILL }},
722
723
724     { &hf_lacpdu_flags_p_collecting,
725       { "Collecting",           "lacp.partnerState.collecting",
726         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_COLLECTING,
727         "Collection of incoming frames is: Enabled = 1, Disabled = 0", HFILL }},
728
729
730     { &hf_lacpdu_flags_p_distrib,
731       { "Distributing",         "lacp.partnerState.distributing",
732         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_DISTRIB,
733         "Distribution of outgoing frames is: Enabled = 1, Disabled = 0", HFILL }},
734
735
736
737     { &hf_lacpdu_flags_p_defaulted,
738       { "Defaulted",            "lacp.partnerState.defaulted",
739         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_DEFAULTED,
740         "1 = Actor Rx machine is using DEFAULT Partner info, 0 = using info in Rx'd LACPDU", HFILL }},
741
742
743     { &hf_lacpdu_flags_p_expired,
744       { "Expired",              "lacp.partnerState.expired",
745         FT_BOOLEAN,     8,              TFS(&yesno),    LACPDU_FLAGS_EXPIRED,
746         "1 = Actor Rx machine is EXPIRED, 0 = is NOT EXPIRED", HFILL }},
747
748
749     { &hf_lacpdu_partner_reserved,
750       { "Reserved",             "lacp.reserved",
751         FT_BYTES,       BASE_NONE,      NULL,   0x0,
752         "", HFILL }},
753
754     { &hf_lacpdu_coll_type,
755       { "Collector Information",        "lacp.collectorInfo",
756         FT_UINT8,       BASE_HEX,       NULL,   0x0,
757         "TLV type = Collector", HFILL }},
758
759     { &hf_lacpdu_coll_info_len,
760       { "Collector Information Length",                 "lacp.collectorInfoLen",
761         FT_UINT8,       BASE_HEX,       NULL,   0x0,
762         "The length of the Collector TLV", HFILL }},
763
764     { &hf_lacpdu_coll_max_delay,
765       { "Collector Max Delay",  "lacp.collectorMaxDelay",
766         FT_UINT16,      BASE_DEC,       NULL,   0x0,
767         "The max delay of the station tx'ing the LACPDU (in tens of usecs)", HFILL }},
768
769     { &hf_lacpdu_coll_reserved,
770       { "Reserved",             "lacp.reserved",
771         FT_BYTES,       BASE_NONE,      NULL,   0x0,
772         "", HFILL }},
773
774
775     { &hf_lacpdu_term_type,
776       { "Terminator Information",       "lacp.termInfo",
777         FT_UINT8,       BASE_HEX,       NULL,   0x0,
778         "TLV type = Terminator", HFILL }},
779
780     { &hf_lacpdu_term_len,
781       { "Terminator Length",                    "lacp.termLen",
782         FT_UINT8,       BASE_HEX,       NULL,   0x0,
783         "The length of the Terminator TLV", HFILL }},
784
785     { &hf_lacpdu_term_reserved,
786       { "Reserved",             "lacp.reserved",
787         FT_BYTES,       BASE_NONE,      NULL,   0x0,
788         "", HFILL }},
789
790   };
791
792   /* Setup protocol subtree array */
793
794   static gint *ett[] = {
795     &ett_lacpdu,
796     &ett_lacpdu_a_flags,
797     &ett_lacpdu_p_flags,
798   };
799
800   /* Register the protocol name and description */
801
802   proto_lacpdu = proto_register_protocol("Link Aggregation Control Protocol", "LACP", "lacp");
803
804   /* Required function calls to register the header fields and subtrees used */
805
806   proto_register_field_array(proto_lacpdu, hf, array_length(hf));
807   proto_register_subtree_array(ett, array_length(ett));
808
809 }
810
811
812 void
813 proto_reg_handoff_lacpdu(void)
814 {
815   dissector_handle_t slow_protocols_handle;
816
817   slow_protocols_handle = create_dissector_handle(dissect_slow_protocols, proto_lacpdu);
818   dissector_add("ethertype", ETHERTYPE_SLOW_PROTOCOLS, slow_protocols_handle);
819 }