3 * Gilbert Ramirez <gram@alumni.rice.edu>
4 * Jochen Friedrich <jochen@scram.de>
6 * $Id: packet-sna.c,v 1.48 2003/07/18 05:12:13 guy Exp $
8 * Ethereal - Network traffic analyzer
9 * By Gerald Combs <gerald@ethereal.com>
10 * Copyright 1998 Gerald Combs
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.
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.
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.
32 #include <epan/packet.h>
35 #include <epan/sna-utils.h>
37 #include "reassemble.h"
41 * http://www.wanresources.com/snacell.html
42 * ftp://ftp.software.ibm.com/networking/pub/standards/aiw/formats/
46 static int proto_sna = -1;
47 static int proto_sna_xid = -1;
48 static int hf_sna_th = -1;
49 static int hf_sna_th_0 = -1;
50 static int hf_sna_th_fid = -1;
51 static int hf_sna_th_mpf = -1;
52 static int hf_sna_th_odai = -1;
53 static int hf_sna_th_efi = -1;
54 static int hf_sna_th_daf = -1;
55 static int hf_sna_th_oaf = -1;
56 static int hf_sna_th_snf = -1;
57 static int hf_sna_th_dcf = -1;
58 static int hf_sna_th_lsid = -1;
59 static int hf_sna_th_tg_sweep = -1;
60 static int hf_sna_th_er_vr_supp_ind = -1;
61 static int hf_sna_th_vr_pac_cnt_ind = -1;
62 static int hf_sna_th_ntwk_prty = -1;
63 static int hf_sna_th_tgsf = -1;
64 static int hf_sna_th_mft = -1;
65 static int hf_sna_th_piubf = -1;
66 static int hf_sna_th_iern = -1;
67 static int hf_sna_th_nlpoi = -1;
68 static int hf_sna_th_nlp_cp = -1;
69 static int hf_sna_th_ern = -1;
70 static int hf_sna_th_vrn = -1;
71 static int hf_sna_th_tpf = -1;
72 static int hf_sna_th_vr_cwi = -1;
73 static int hf_sna_th_tg_nonfifo_ind = -1;
74 static int hf_sna_th_vr_sqti = -1;
75 static int hf_sna_th_tg_snf = -1;
76 static int hf_sna_th_vrprq = -1;
77 static int hf_sna_th_vrprs = -1;
78 static int hf_sna_th_vr_cwri = -1;
79 static int hf_sna_th_vr_rwi = -1;
80 static int hf_sna_th_vr_snf_send = -1;
81 static int hf_sna_th_dsaf = -1;
82 static int hf_sna_th_osaf = -1;
83 static int hf_sna_th_snai = -1;
84 static int hf_sna_th_def = -1;
85 static int hf_sna_th_oef = -1;
86 static int hf_sna_th_sa = -1;
87 static int hf_sna_th_cmd_fmt = -1;
88 static int hf_sna_th_cmd_type = -1;
89 static int hf_sna_th_cmd_sn = -1;
91 static int hf_sna_nlp_nhdr = -1;
92 static int hf_sna_nlp_nhdr_0 = -1;
93 static int hf_sna_nlp_sm = -1;
94 static int hf_sna_nlp_tpf = -1;
95 static int hf_sna_nlp_nhdr_1 = -1;
96 static int hf_sna_nlp_ft = -1;
97 static int hf_sna_nlp_tspi = -1;
98 static int hf_sna_nlp_slowdn1 = -1;
99 static int hf_sna_nlp_slowdn2 = -1;
100 static int hf_sna_nlp_fra = -1;
101 static int hf_sna_nlp_anr = -1;
102 static int hf_sna_nlp_frh = -1;
103 static int hf_sna_nlp_thdr = -1;
104 static int hf_sna_nlp_tcid = -1;
105 static int hf_sna_nlp_thdr_8 = -1;
106 static int hf_sna_nlp_setupi = -1;
107 static int hf_sna_nlp_somi = -1;
108 static int hf_sna_nlp_eomi = -1;
109 static int hf_sna_nlp_sri = -1;
110 static int hf_sna_nlp_rasapi = -1;
111 static int hf_sna_nlp_retryi = -1;
112 static int hf_sna_nlp_thdr_9 = -1;
113 static int hf_sna_nlp_lmi = -1;
114 static int hf_sna_nlp_cqfi = -1;
115 static int hf_sna_nlp_osi = -1;
116 static int hf_sna_nlp_offset = -1;
117 static int hf_sna_nlp_dlf = -1;
118 static int hf_sna_nlp_bsn = -1;
119 static int hf_sna_nlp_opti_len = -1;
120 static int hf_sna_nlp_opti_type = -1;
121 static int hf_sna_nlp_opti_0d_version = -1;
122 static int hf_sna_nlp_opti_0d_4 = -1;
123 static int hf_sna_nlp_opti_0d_target = -1;
124 static int hf_sna_nlp_opti_0d_arb = -1;
125 static int hf_sna_nlp_opti_0d_reliable = -1;
126 static int hf_sna_nlp_opti_0d_dedicated = -1;
127 static int hf_sna_nlp_opti_0e_stat = -1;
128 static int hf_sna_nlp_opti_0e_gap = -1;
129 static int hf_sna_nlp_opti_0e_idle = -1;
130 static int hf_sna_nlp_opti_0e_nabsp = -1;
131 static int hf_sna_nlp_opti_0e_sync = -1;
132 static int hf_sna_nlp_opti_0e_echo = -1;
133 static int hf_sna_nlp_opti_0e_rseq = -1;
134 static int hf_sna_nlp_opti_0e_abspbeg = -1;
135 static int hf_sna_nlp_opti_0e_abspend = -1;
136 static int hf_sna_nlp_opti_0f_bits = -1;
137 static int hf_sna_nlp_opti_10_tcid = -1;
138 static int hf_sna_nlp_opti_12_sense = -1;
139 static int hf_sna_nlp_opti_14_si_len = -1;
140 static int hf_sna_nlp_opti_14_si_key = -1;
141 static int hf_sna_nlp_opti_14_si_2 = -1;
142 static int hf_sna_nlp_opti_14_si_refifo = -1;
143 static int hf_sna_nlp_opti_14_si_mobility = -1;
144 static int hf_sna_nlp_opti_14_si_dirsearch = -1;
145 static int hf_sna_nlp_opti_14_si_limitres = -1;
146 static int hf_sna_nlp_opti_14_si_ncescope = -1;
147 static int hf_sna_nlp_opti_14_si_mnpsrscv = -1;
148 static int hf_sna_nlp_opti_14_si_maxpsize = -1;
149 static int hf_sna_nlp_opti_14_si_switch = -1;
150 static int hf_sna_nlp_opti_14_si_alive = -1;
151 static int hf_sna_nlp_opti_14_rr_len = -1;
152 static int hf_sna_nlp_opti_14_rr_key = -1;
153 static int hf_sna_nlp_opti_14_rr_2 = -1;
154 static int hf_sna_nlp_opti_14_rr_bfe = -1;
155 static int hf_sna_nlp_opti_14_rr_num = -1;
156 static int hf_sna_nlp_opti_22_2 = -1;
157 static int hf_sna_nlp_opti_22_type = -1;
158 static int hf_sna_nlp_opti_22_raa = -1;
159 static int hf_sna_nlp_opti_22_parity = -1;
160 static int hf_sna_nlp_opti_22_arb = -1;
161 static int hf_sna_nlp_opti_22_3 = -1;
162 static int hf_sna_nlp_opti_22_ratereq = -1;
163 static int hf_sna_nlp_opti_22_raterep = -1;
164 static int hf_sna_nlp_opti_22_field1 = -1;
165 static int hf_sna_nlp_opti_22_field2 = -1;
166 static int hf_sna_nlp_opti_22_field3 = -1;
167 static int hf_sna_nlp_opti_22_field4 = -1;
169 static int hf_sna_rh = -1;
170 static int hf_sna_rh_0 = -1;
171 static int hf_sna_rh_1 = -1;
172 static int hf_sna_rh_2 = -1;
173 static int hf_sna_rh_rri = -1;
174 static int hf_sna_rh_ru_category = -1;
175 static int hf_sna_rh_fi = -1;
176 static int hf_sna_rh_sdi = -1;
177 static int hf_sna_rh_bci = -1;
178 static int hf_sna_rh_eci = -1;
179 static int hf_sna_rh_dr1 = -1;
180 static int hf_sna_rh_lcci = -1;
181 static int hf_sna_rh_dr2 = -1;
182 static int hf_sna_rh_eri = -1;
183 static int hf_sna_rh_rti = -1;
184 static int hf_sna_rh_rlwi = -1;
185 static int hf_sna_rh_qri = -1;
186 static int hf_sna_rh_pi = -1;
187 static int hf_sna_rh_bbi = -1;
188 static int hf_sna_rh_ebi = -1;
189 static int hf_sna_rh_cdi = -1;
190 static int hf_sna_rh_csi = -1;
191 static int hf_sna_rh_edi = -1;
192 static int hf_sna_rh_pdi = -1;
193 static int hf_sna_rh_cebi = -1;
194 /*static int hf_sna_ru = -1;*/
196 static int hf_sna_gds = -1;
197 static int hf_sna_gds_len = -1;
198 static int hf_sna_gds_type = -1;
199 static int hf_sna_gds_cont = -1;
201 static int hf_sna_xid = -1;
202 static int hf_sna_xid_0 = -1;
203 static int hf_sna_xid_id = -1;
204 static int hf_sna_xid_format = -1;
205 static int hf_sna_xid_type = -1;
206 static int hf_sna_xid_len = -1;
207 static int hf_sna_xid_idblock = -1;
208 static int hf_sna_xid_idnum = -1;
209 static int hf_sna_xid_3_8 = -1;
210 static int hf_sna_xid_3_init_self = -1;
211 static int hf_sna_xid_3_stand_bind = -1;
212 static int hf_sna_xid_3_gener_bind = -1;
213 static int hf_sna_xid_3_recve_bind = -1;
214 static int hf_sna_xid_3_actpu = -1;
215 static int hf_sna_xid_3_nwnode = -1;
216 static int hf_sna_xid_3_cp = -1;
217 static int hf_sna_xid_3_cpcp = -1;
218 static int hf_sna_xid_3_state = -1;
219 static int hf_sna_xid_3_nonact = -1;
220 static int hf_sna_xid_3_cpchange = -1;
221 static int hf_sna_xid_3_10 = -1;
222 static int hf_sna_xid_3_asend_bind = -1;
223 static int hf_sna_xid_3_arecv_bind = -1;
224 static int hf_sna_xid_3_quiesce = -1;
225 static int hf_sna_xid_3_pucap = -1;
226 static int hf_sna_xid_3_pbn = -1;
227 static int hf_sna_xid_3_pacing = -1;
228 static int hf_sna_xid_3_11 = -1;
229 static int hf_sna_xid_3_tgshare = -1;
230 static int hf_sna_xid_3_dedsvc = -1;
231 static int hf_sna_xid_3_12 = -1;
232 static int hf_sna_xid_3_negcsup = -1;
233 static int hf_sna_xid_3_negcomp = -1;
234 static int hf_sna_xid_3_15 = -1;
235 static int hf_sna_xid_3_partg = -1;
236 static int hf_sna_xid_3_dlur = -1;
237 static int hf_sna_xid_3_dlus = -1;
238 static int hf_sna_xid_3_exbn = -1;
239 static int hf_sna_xid_3_genodai = -1;
240 static int hf_sna_xid_3_branch = -1;
241 static int hf_sna_xid_3_brnn = -1;
242 static int hf_sna_xid_3_tg = -1;
243 static int hf_sna_xid_3_dlc = -1;
244 static int hf_sna_xid_3_dlen = -1;
246 static int hf_sna_control_len = -1;
247 static int hf_sna_control_key = -1;
248 static int hf_sna_control_hprkey = -1;
249 static int hf_sna_control_05_delay = -1;
250 static int hf_sna_control_05_type = -1;
251 static int hf_sna_control_05_ptp = -1;
252 static int hf_sna_control_0e_type = -1;
253 static int hf_sna_control_0e_value = -1;
255 static gint ett_sna = -1;
256 static gint ett_sna_th = -1;
257 static gint ett_sna_th_fid = -1;
258 static gint ett_sna_nlp_nhdr = -1;
259 static gint ett_sna_nlp_nhdr_0 = -1;
260 static gint ett_sna_nlp_nhdr_1 = -1;
261 static gint ett_sna_nlp_thdr = -1;
262 static gint ett_sna_nlp_thdr_8 = -1;
263 static gint ett_sna_nlp_thdr_9 = -1;
264 static gint ett_sna_nlp_opti_un = -1;
265 static gint ett_sna_nlp_opti_0d = -1;
266 static gint ett_sna_nlp_opti_0d_4 = -1;
267 static gint ett_sna_nlp_opti_0e = -1;
268 static gint ett_sna_nlp_opti_0e_stat = -1;
269 static gint ett_sna_nlp_opti_0e_absp = -1;
270 static gint ett_sna_nlp_opti_0f = -1;
271 static gint ett_sna_nlp_opti_10 = -1;
272 static gint ett_sna_nlp_opti_12 = -1;
273 static gint ett_sna_nlp_opti_14 = -1;
274 static gint ett_sna_nlp_opti_14_si = -1;
275 static gint ett_sna_nlp_opti_14_si_2 = -1;
276 static gint ett_sna_nlp_opti_14_rr = -1;
277 static gint ett_sna_nlp_opti_14_rr_2 = -1;
278 static gint ett_sna_nlp_opti_22 = -1;
279 static gint ett_sna_nlp_opti_22_2 = -1;
280 static gint ett_sna_nlp_opti_22_3 = -1;
281 static gint ett_sna_rh = -1;
282 static gint ett_sna_rh_0 = -1;
283 static gint ett_sna_rh_1 = -1;
284 static gint ett_sna_rh_2 = -1;
285 static gint ett_sna_gds = -1;
286 static gint ett_sna_xid_0 = -1;
287 static gint ett_sna_xid_id = -1;
288 static gint ett_sna_xid_3_8 = -1;
289 static gint ett_sna_xid_3_10 = -1;
290 static gint ett_sna_xid_3_11 = -1;
291 static gint ett_sna_xid_3_12 = -1;
292 static gint ett_sna_xid_3_15 = -1;
293 static gint ett_sna_control_un = -1;
294 static gint ett_sna_control_05 = -1;
295 static gint ett_sna_control_05hpr = -1;
296 static gint ett_sna_control_05hpr_type = -1;
297 static gint ett_sna_control_0e = -1;
299 static dissector_handle_t data_handle;
301 /* Defragment fragmented SNA BIUs*/
302 static gboolean sna_defragment = FALSE;
303 static GHashTable *sna_fragment_table = NULL;
304 static GHashTable *sna_reassembled_table = NULL;
306 /* Format Identifier */
307 static const value_string sna_th_fid_vals[] = {
308 { 0x0, "SNA device <--> Non-SNA Device" },
309 { 0x1, "Subarea Nodes, without ER or VR" },
310 { 0x2, "Subarea Node <--> PU2" },
311 { 0x3, "Subarea Node or SNA host <--> Subarea Node" },
312 { 0x4, "Subarea Nodes, supporting ER and VR" },
313 { 0x5, "HPR RTP endpoint nodes" },
314 { 0xa, "HPR NLP Frame Routing" },
315 { 0xb, "HPR NLP Frame Routing" },
316 { 0xc, "HPR NLP Automatic Network Routing" },
317 { 0xd, "HPR NLP Automatic Network Routing" },
318 { 0xf, "Adjaced Subarea Nodes, supporting ER and VR" },
323 #define MPF_MIDDLE_SEGMENT 0
324 #define MPF_LAST_SEGMENT 1
325 #define MPF_FIRST_SEGMENT 2
326 #define MPF_WHOLE_BIU 3
328 static const value_string sna_th_mpf_vals[] = {
329 { MPF_MIDDLE_SEGMENT, "Middle segment of a BIU" },
330 { MPF_LAST_SEGMENT, "Last segment of a BIU" },
331 { MPF_FIRST_SEGMENT, "First segment of a BIU" },
332 { MPF_WHOLE_BIU, "Whole BIU" },
336 /* Expedited Flow Indicator */
337 static const value_string sna_th_efi_vals[] = {
338 { 0, "Normal Flow" },
339 { 1, "Expedited Flow" },
343 /* Request/Response Indicator */
344 static const value_string sna_rh_rri_vals[] = {
350 /* Request/Response Unit Category */
351 static const value_string sna_rh_ru_category_vals[] = {
352 { 0, "Function Management Data (FMD)" },
353 { 1, "Network Control (NC)" },
354 { 2, "Data Flow Control (DFC)" },
355 { 3, "Session Control (SC)" },
359 /* Format Indicator */
360 static const true_false_string sna_rh_fi_truth =
361 { "FM Header", "No FM Header" };
363 /* Sense Data Included */
364 static const true_false_string sna_rh_sdi_truth =
365 { "Included", "Not Included" };
367 /* Begin Chain Indicator */
368 static const true_false_string sna_rh_bci_truth =
369 { "First in Chain", "Not First in Chain" };
371 /* End Chain Indicator */
372 static const true_false_string sna_rh_eci_truth =
373 { "Last in Chain", "Not Last in Chain" };
375 /* Lengith-Checked Compression Indicator */
376 static const true_false_string sna_rh_lcci_truth =
377 { "Compressed", "Not Compressed" };
379 /* Response Type Indicator */
380 static const true_false_string sna_rh_rti_truth =
381 { "Negative", "Positive" };
383 /* Queued Response Indicator */
384 static const true_false_string sna_rh_qri_truth =
385 { "Enqueue response in TC queues", "Response bypasses TC queues" };
387 /* Code Selection Indicator */
388 static const value_string sna_rh_csi_vals[] = {
395 static const value_string sna_th_tg_sweep_vals[] = {
396 { 0, "This PIU may overtake any PU ahead of it." },
397 { 1, "This PIU does not ovetake any PIU ahead of it." },
402 static const value_string sna_th_er_vr_supp_ind_vals[] = {
403 { 0, "Each node supports ER and VR protocols" },
404 { 1, "Includes at least one node that does not support ER and VR"
410 static const value_string sna_th_vr_pac_cnt_ind_vals[] = {
411 { 0, "Pacing count on the VR has not reached 0" },
412 { 1, "Pacing count on the VR has reached 0" },
417 static const value_string sna_th_ntwk_prty_vals[] = {
418 { 0, "PIU flows at a lower priority" },
419 { 1, "PIU flows at network priority (highest transmission priority)" },
424 static const value_string sna_th_tgsf_vals[] = {
425 { 0, "Not segmented" },
426 { 1, "Last segment" },
427 { 2, "First segment" },
428 { 3, "Middle segment" },
433 static const value_string sna_th_piubf_vals[] = {
434 { 0, "Single PIU frame" },
435 { 1, "Last PIU of a multiple PIU frame" },
436 { 2, "First PIU of a multiple PIU frame" },
437 { 3, "Middle PIU of a multiple PIU frame" },
442 static const value_string sna_th_nlpoi_vals[] = {
443 { 0, "NLP starts within this FID4 TH" },
444 { 1, "NLP byte 0 starts after RH byte 0 following NLP C/P pad" },
449 static const value_string sna_th_tpf_vals[] = {
450 { 0, "Low Priority" },
451 { 1, "Medium Priority" },
452 { 2, "High Priority" },
453 { 3, "Network Priority" },
458 static const value_string sna_th_vr_cwi_vals[] = {
459 { 0, "Increment window size" },
460 { 1, "Decrement window size" },
465 static const true_false_string sna_th_tg_nonfifo_ind_truth =
466 { "TG FIFO is not required", "TG FIFO is required" };
469 static const value_string sna_th_vr_sqti_vals[] = {
470 { 0, "Non-sequenced, Non-supervisory" },
471 { 1, "Non-sequenced, Supervisory" },
472 { 2, "Singly-sequenced" },
477 static const true_false_string sna_th_vrprq_truth = {
478 "VR pacing request is sent asking for a VR pacing response",
479 "No VR pacing response is requested",
483 static const true_false_string sna_th_vrprs_truth = {
484 "VR pacing response is sent in response to a VRPRQ bit set",
485 "No pacing response sent",
489 static const value_string sna_th_vr_cwri_vals[] = {
490 { 0, "Increment window size by 1" },
491 { 1, "Decrement window size by 1" },
496 static const true_false_string sna_th_vr_rwi_truth = {
497 "Reset window size to the minimum specified in NC_ACTVR",
498 "Do not reset window size",
502 static const value_string sna_nlp_sm_vals[] = {
503 { 5, "Function routing" },
504 { 6, "Automatic network routing" },
508 static const true_false_string sna_nlp_tspi_truth =
509 { "Time sensitive", "Not time sensitive" };
511 static const true_false_string sna_nlp_slowdn1_truth =
512 { "Minor congestion", "No minor congestion" };
514 static const true_false_string sna_nlp_slowdn2_truth =
515 { "Major congestion", "No major congestion" };
518 static const value_string sna_nlp_ft_vals[] = {
523 static const value_string sna_nlp_frh_vals[] = {
524 { 0x03, "XID complete request" },
525 { 0x04, "XID complete response" },
529 static const true_false_string sna_nlp_setupi_truth =
530 { "Connection setup segment present", "Connection setup segment not"
533 static const true_false_string sna_nlp_somi_truth =
534 { "Start of message", "Not start of message" };
536 static const true_false_string sna_nlp_eomi_truth =
537 { "End of message", "Not end of message" };
539 static const true_false_string sna_nlp_sri_truth =
540 { "Status requested", "No status requested" };
542 static const true_false_string sna_nlp_rasapi_truth =
543 { "Reply as soon as possible", "No need to reply as soon as possible" };
545 static const true_false_string sna_nlp_retryi_truth =
546 { "Undefined", "Sender will retransmit" };
548 static const true_false_string sna_nlp_lmi_truth =
549 { "Last message", "Not last message" };
551 static const true_false_string sna_nlp_cqfi_truth =
552 { "CQFI included", "CQFI not included" };
554 static const true_false_string sna_nlp_osi_truth =
555 { "Optional segments present", "No optional segments present" };
557 static const value_string sna_xid_3_state_vals[] = {
558 { 0x00, "Exchange state indicators not supported" },
559 { 0x01, "Negotiation-proceeding exchange" },
560 { 0x02, "Prenegotiation exchange" },
561 { 0x03, "Nonactivation exchange" },
565 static const value_string sna_xid_3_branch_vals[] = {
566 { 0x00, "Sender does not support branch extender" },
567 { 0x01, "TG is branch uplink" },
568 { 0x02, "TG is branch downlink" },
569 { 0x03, "TG is neither uplink nor downlink" },
573 static const value_string sna_xid_type_vals[] = {
575 { 0x02, "T2.0 or T2.1 node" },
576 { 0x03, "Reserved" },
577 { 0x04, "T4 or T5 node" },
581 static const value_string sna_nlp_opti_vals[] = {
582 { 0x0d, "Connection Setup Segment" },
583 { 0x0e, "Status Segment" },
584 { 0x0f, "Client Out Of Band Bits Segment" },
585 { 0x10, "Connection Identifier Exchange Segment" },
586 { 0x12, "Connection Fault Segment" },
587 { 0x14, "Switching Information Segment" },
588 { 0x22, "Adaptive Rate-Based Segment" },
592 static const value_string sna_nlp_opti_0d_version_vals[] = {
593 { 0x0101, "Version 1.1" },
597 static const value_string sna_nlp_opti_0f_bits_vals[] = {
598 { 0x0001, "Request Deactivation" },
599 { 0x8000, "Reply - OK" },
600 { 0x8004, "Reply - Reject" },
604 static const value_string sna_nlp_opti_22_type_vals[] = {
606 { 0x01, "Rate Reply" },
607 { 0x02, "Rate Request" },
608 { 0x03, "Rate Request/Rate Reply" },
612 static const value_string sna_nlp_opti_22_raa_vals[] = {
614 { 0x01, "Restraint" },
615 { 0x02, "Slowdown1" },
616 { 0x03, "Slowdown2" },
617 { 0x04, "Critical" },
621 static const value_string sna_nlp_opti_22_arb_vals[] = {
622 { 0x00, "Base Mode ARB" },
623 { 0x01, "Responsive Mode ARB" },
627 /* GDS Variable Type */
628 static const value_string sna_gds_var_vals[] = {
629 { 0x1210, "Change Number Of Sessions" },
630 { 0x1211, "Exchange Log Name" },
631 { 0x1212, "Control Point Management Services Unit" },
632 { 0x1213, "Compare States" },
633 { 0x1214, "LU Names Position" },
634 { 0x1215, "LU Name" },
635 { 0x1217, "Do Know" },
636 { 0x1218, "Partner Restart" },
637 { 0x1219, "Don't Know" },
638 { 0x1220, "Sign-Off" },
639 { 0x1221, "Sign-On" },
640 { 0x1222, "SNMP-over-SNA" },
641 { 0x1223, "Node Address Service" },
642 { 0x12C1, "CP Capabilities" },
643 { 0x12C2, "Topology Database Update" },
644 { 0x12C3, "Register Resource" },
645 { 0x12C4, "Locate" },
646 { 0x12C5, "Cross-Domain Initiate" },
647 { 0x12C9, "Delete Resource" },
648 { 0x12CA, "Find Resource" },
649 { 0x12CB, "Found Resource" },
650 { 0x12CC, "Notify" },
651 { 0x12CD, "Initiate-Other Cross-Domain" },
652 { 0x12CE, "Route Setup" },
653 { 0x12E1, "Error Log" },
654 { 0x12F1, "Null Data" },
655 { 0x12F2, "User Control Date" },
656 { 0x12F3, "Map Name" },
657 { 0x12F4, "Error Data" },
658 { 0x12F6, "Authentication Token Data" },
659 { 0x12F8, "Service Flow Authentication Token Data" },
660 { 0x12FF, "Application Data" },
661 { 0x1310, "MDS Message Unit" },
662 { 0x1311, "MDS Routing Information" },
663 { 0x1500, "FID2 Encapsulation" },
667 /* Control Vector Type */
668 static const value_string sna_control_vals[] = {
669 { 0x00, "SSCP-LU Session Capabilities Control Vector" },
670 { 0x01, "Date-Time Control Vector" },
671 { 0x02, "Subarea Routing Control Vector" },
672 { 0x03, "SDLC Secondary Station Control Vector" },
673 { 0x04, "LU Control Vector" },
674 { 0x05, "Channel Control Vector" },
675 { 0x06, "Cross-Domain Resource Manager (CDRM) Control Vector" },
676 { 0x07, "PU FMD-RU-Usage Control Vector" },
677 { 0x08, "Intensive Mode Control Vector" },
678 { 0x09, "Activation Request / Response Sequence Identifier Control"
680 { 0x0a, "User Request Correlator Control Vector" },
681 { 0x0b, "SSCP-PU Session Capabilities Control Vector" },
682 { 0x0c, "LU-LU Session Capabilities Control Vector" },
683 { 0x0d, "Mode / Class-of-Service / Virtual-Route-Identifier List"
685 { 0x0e, "Network Name Control Vector" },
686 { 0x0f, "Link Capabilities and Status Control Vector" },
687 { 0x10, "Product Set ID Control Vector" },
688 { 0x11, "Load Module Correlation Control Vector" },
689 { 0x12, "Network Identifier Control Vector" },
690 { 0x13, "Gateway Support Capabilities Control Vector" },
691 { 0x14, "Session Initiation Control Vector" },
692 { 0x15, "Network-Qualified Address Pair Control Vector" },
693 { 0x16, "Names Substitution Control Vector" },
694 { 0x17, "SSCP Identifier Control Vector" },
695 { 0x18, "SSCP Name Control Vector" },
696 { 0x19, "Resource Identifier Control Vector" },
697 { 0x1a, "NAU Address Control Vector" },
698 { 0x1b, "VRID List Control Vector" },
699 { 0x1c, "Network-Qualified Name Pair Control Vector" },
700 { 0x1e, "VR-ER Mapping Data Control Vector" },
701 { 0x1f, "ER Configuration Control Vector" },
702 { 0x23, "Local-Form Session Identifier Control Vector" },
703 { 0x24, "IPL Load Module Request Control Vector" },
704 { 0x25, "Security ID Control Control Vector" },
705 { 0x26, "Network Connection Endpoint Identifier Control Vector" },
706 { 0x27, "XRF Session Activation Control Vector" },
707 { 0x28, "Related Session Identifier Control Vector" },
708 { 0x29, "Session State Data Control Vector" },
709 { 0x2a, "Session Information Control Vector" },
710 { 0x2b, "Route Selection Control Vector" },
711 { 0x2c, "COS/TPF Control Vector" },
712 { 0x2d, "Mode Control Vector" },
713 { 0x2f, "LU Definition Control Vector" },
714 { 0x30, "Assign LU Characteristics Control Vector" },
715 { 0x31, "BIND Image Control Vector" },
716 { 0x32, "Short-Hold Mode Control Vector" },
717 { 0x33, "ENCP Search Control Control Vector" },
718 { 0x34, "LU Definition Override Control Vector" },
719 { 0x35, "Extended Sense Data Control Vector" },
720 { 0x36, "Directory Error Control Vector" },
721 { 0x37, "Directory Entry Correlator Control Vector" },
722 { 0x38, "Short-Hold Mode Emulation Control Vector" },
723 { 0x39, "Network Connection Endpoint (NCE) Instance Identifier"
725 { 0x3a, "Route Status Data Control Vector" },
726 { 0x3b, "VR Congestion Data Control Vector" },
727 { 0x3c, "Associated Resource Entry Control Vector" },
728 { 0x3d, "Directory Entry Control Vector" },
729 { 0x3e, "Directory Entry Characteristic Control Vector" },
730 { 0x3f, "SSCP (SLU) Capabilities Control Vector" },
731 { 0x40, "Real Associated Resource Control Vector" },
732 { 0x41, "Station Parameters Control Vector" },
733 { 0x42, "Dynamic Path Update Data Control Vector" },
734 { 0x43, "Extended SDLC Station Control Vector" },
735 { 0x44, "Node Descriptor Control Vector" },
736 { 0x45, "Node Characteristics Control Vector" },
737 { 0x46, "TG Descriptor Control Vector" },
738 { 0x47, "TG Characteristics Control Vector" },
739 { 0x48, "Topology Resource Descriptor Control Vector" },
740 { 0x49, "Multinode Persistent Sessions (MNPS) LU Names Control"
742 { 0x4a, "Real Owning Control Point Control Vector" },
743 { 0x4b, "RTP Transport Connection Identifier Control Vector" },
744 { 0x51, "DLUR/S Capabilities Control Vector" },
745 { 0x52, "Primary Send Pacing Window Size Control Vector" },
746 { 0x56, "Call Security Verification Control Vector" },
747 { 0x57, "DLC Connection Data Control Vector" },
748 { 0x59, "Installation-Defined CDINIT Data Control Vector" },
749 { 0x5a, "Session Services Extension Support Control Vector" },
750 { 0x5b, "Interchange Node Support Control Vector" },
751 { 0x5c, "APPN Message Transport Control Vector" },
752 { 0x5d, "Subarea Message Transport Control Vector" },
753 { 0x5e, "Related Request Control Vector" },
754 { 0x5f, "Extended Fully Qualified PCID Control Vector" },
755 { 0x60, "Fully Qualified PCID Control Vector" },
756 { 0x61, "HPR Capabilities Control Vector" },
757 { 0x62, "Session Address Control Vector" },
758 { 0x63, "Cryptographic Key Distribution Control Vector" },
759 { 0x64, "TCP/IP Information Control Vector" },
760 { 0x65, "Device Characteristics Control Vector" },
761 { 0x66, "Length-Checked Compression Control Vector" },
762 { 0x67, "Automatic Network Routing (ANR) Path Control Vector" },
763 { 0x68, "XRF/Session Cryptography Control Vector" },
764 { 0x69, "Switched Parameters Control Vector" },
765 { 0x6a, "ER Congestion Data Control Vector" },
766 { 0x71, "Triple DES Cryptography Key Continuation Control Vector" },
767 { 0xfe, "Control Vector Keys Not Recognized" },
771 static const value_string sna_control_hpr_vals[] = {
772 { 0x00, "Node Identifier Control Vector" },
773 { 0x03, "Network ID Control Vector" },
774 { 0x05, "Network Address Control Vector" },
778 static const value_string sna_control_0e_type_vals[] = {
782 { 0xF5, "SSCP Name" },
783 { 0xF6, "NNCP Name" },
784 { 0xF7, "Link Station Name" },
785 { 0xF8, "CP Name of CP(PLU)" },
786 { 0xF9, "CP Name of CP(SLU)" },
787 { 0xFA, "Generic Name" },
791 /* Values to direct the top-most dissector what to dissect
793 enum next_dissection_enum {
804 typedef enum next_dissection_enum next_dissection_t;
806 static void dissect_xid (tvbuff_t*, packet_info*, proto_tree*, proto_tree*);
807 static void dissect_fid (tvbuff_t*, packet_info*, proto_tree*, proto_tree*);
808 static void dissect_nlp (tvbuff_t*, packet_info*, proto_tree*, proto_tree*);
809 static void dissect_gds (tvbuff_t*, packet_info*, proto_tree*, proto_tree*);
810 static void dissect_rh (tvbuff_t*, int, proto_tree*);
811 static void dissect_control(tvbuff_t*, proto_tree*, int, enum parse);
813 /* --------------------------------------------------------------------
814 * Chapter 2 High-Performance Routing (HPR) Headers
815 * --------------------------------------------------------------------
819 dissect_optional_0d(tvbuff_t *tvb, proto_tree *tree)
821 int bits, offset, len, pad;
822 proto_tree *sub_tree;
823 proto_item *sub_ti = NULL;
828 proto_tree_add_item(tree, hf_sna_nlp_opti_0d_version, tvb, 2, 2, FALSE);
829 bits = tvb_get_guint8(tvb, 4);
831 sub_ti = proto_tree_add_uint(tree, hf_sna_nlp_opti_0d_4,
833 sub_tree = proto_item_add_subtree(sub_ti,
834 ett_sna_nlp_opti_0d_4);
836 proto_tree_add_boolean(sub_tree, hf_sna_nlp_opti_0d_target,
838 proto_tree_add_boolean(sub_tree, hf_sna_nlp_opti_0d_arb,
840 proto_tree_add_boolean(sub_tree, hf_sna_nlp_opti_0d_reliable,
842 proto_tree_add_boolean(sub_tree, hf_sna_nlp_opti_0d_dedicated,
845 proto_tree_add_text(tree, tvb, 5, 3, "Reserved");
849 while (tvb_offset_exists(tvb, offset)) {
850 len = tvb_get_guint8(tvb, offset+0);
852 dissect_control(tvb_new_subset(tvb, offset, len, -1),
854 pad = (len+3) & 0xfffc;
856 proto_tree_add_text(tree, tvb, offset+len,
860 /* Avoid endless loop */
867 dissect_optional_0e(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
870 proto_tree *sub_tree;
871 proto_item *sub_ti = NULL;
873 bits = tvb_get_guint8(tvb, 2);
877 sub_ti = proto_tree_add_item(tree, hf_sna_nlp_opti_0e_stat,
879 sub_tree = proto_item_add_subtree(sub_ti,
880 ett_sna_nlp_opti_0e_stat);
882 proto_tree_add_boolean(sub_tree, hf_sna_nlp_opti_0e_gap,
884 proto_tree_add_boolean(sub_tree, hf_sna_nlp_opti_0e_idle,
886 proto_tree_add_item(tree, hf_sna_nlp_opti_0e_nabsp,
888 proto_tree_add_item(tree, hf_sna_nlp_opti_0e_sync,
890 proto_tree_add_item(tree, hf_sna_nlp_opti_0e_echo,
892 proto_tree_add_item(tree, hf_sna_nlp_opti_0e_rseq,
894 proto_tree_add_text(tree, tvb, 12, 8, "Reserved");
896 if (tvb_offset_exists(tvb, offset))
897 call_dissector(data_handle,
898 tvb_new_subset(tvb, 4, -1, -1), pinfo, tree);
901 if (check_col(pinfo->cinfo, COL_INFO))
902 col_add_str(pinfo->cinfo, COL_INFO,
905 if (check_col(pinfo->cinfo, COL_INFO))
906 col_add_str(pinfo->cinfo, COL_INFO,
907 "HPR Status Message");
912 dissect_optional_0f(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
917 proto_tree_add_item(tree, hf_sna_nlp_opti_0f_bits, tvb, 2, 2, FALSE);
918 if (tvb_offset_exists(tvb, 4))
919 call_dissector(data_handle,
920 tvb_new_subset(tvb, 4, -1, -1), pinfo, tree);
924 dissect_optional_10(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
929 proto_tree_add_text(tree, tvb, 2, 2, "Reserved");
930 proto_tree_add_item(tree, hf_sna_nlp_opti_10_tcid, tvb, 4, 8, FALSE);
931 if (tvb_offset_exists(tvb, 12))
932 call_dissector(data_handle,
933 tvb_new_subset(tvb, 12, -1, -1), pinfo, tree);
937 dissect_optional_12(tvbuff_t *tvb, proto_tree *tree)
942 proto_tree_add_text(tree, tvb, 2, 2, "Reserved");
943 proto_tree_add_item(tree, hf_sna_nlp_opti_12_sense, tvb, 4, -1, FALSE);
947 dissect_optional_14(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
949 proto_tree *sub_tree, *bf_tree;
950 proto_item *sub_item, *bf_item;
951 int len, pad, type, bits, offset, num, sublen;
956 proto_tree_add_text(tree, tvb, 2, 2, "Reserved");
960 len = tvb_get_guint8(tvb, offset);
961 type = tvb_get_guint8(tvb, offset+1);
963 if ((type != 0x83) || (len <= 16)) {
965 call_dissector(data_handle,
966 tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
969 sub_item = proto_tree_add_text(tree, tvb, offset, len,
970 "Switching Information Control Vector");
971 sub_tree = proto_item_add_subtree(sub_item, ett_sna_nlp_opti_14_si);
973 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_si_len,
974 tvb, offset, 1, len);
975 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_si_key,
976 tvb, offset+1, 1, type);
978 bits = tvb_get_guint8(tvb, offset+2);
979 bf_item = proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_si_2,
980 tvb, offset+2, 1, bits);
981 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_opti_14_si_2);
983 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_si_refifo,
984 tvb, offset+2, 1, bits);
985 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_si_mobility,
986 tvb, offset+2, 1, bits);
987 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_si_dirsearch,
988 tvb, offset+2, 1, bits);
989 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_si_limitres,
990 tvb, offset+2, 1, bits);
991 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_si_ncescope,
992 tvb, offset+2, 1, bits);
993 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_si_mnpsrscv,
994 tvb, offset+2, 1, bits);
996 proto_tree_add_text(sub_tree, tvb, offset+3, 1, "Reserved");
997 proto_tree_add_item(sub_tree, hf_sna_nlp_opti_14_si_maxpsize,
998 tvb, offset+4, 4, FALSE);
999 proto_tree_add_item(sub_tree, hf_sna_nlp_opti_14_si_switch,
1000 tvb, offset+8, 4, FALSE);
1001 proto_tree_add_item(sub_tree, hf_sna_nlp_opti_14_si_alive,
1002 tvb, offset+12, 4, FALSE);
1004 dissect_control(tvb_new_subset(tvb, offset+16,
1005 len-16, -1), sub_tree, 1, LT);
1007 pad = (len+3) & 0xfffc;
1009 proto_tree_add_text(sub_tree, tvb, offset+len, pad-len,
1013 len = tvb_get_guint8(tvb, offset);
1014 type = tvb_get_guint8(tvb, offset+1);
1016 if ((type != 0x85) || ( len < 4)) {
1018 call_dissector(data_handle,
1019 tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
1022 sub_item = proto_tree_add_text(tree, tvb, offset, len,
1023 "Return Route TG Descriptor Control Vector");
1024 sub_tree = proto_item_add_subtree(sub_item, ett_sna_nlp_opti_14_rr);
1026 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_len,
1027 tvb, offset, 1, len);
1028 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_key,
1029 tvb, offset+1, 1, type);
1031 bits = tvb_get_guint8(tvb, offset+2);
1032 bf_item = proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_2,
1033 tvb, offset+2, 1, bits);
1034 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_opti_14_rr_2);
1036 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_14_rr_bfe,
1037 tvb, offset+2, 1, bits);
1039 num = tvb_get_guint8(tvb, offset+3);
1041 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_14_rr_num,
1042 tvb, offset+3, 1, num);
1047 sublen = tvb_get_guint8(tvb, offset);
1049 dissect_control(tvb_new_subset(tvb, offset,
1050 sublen, -1), sub_tree, 1, LT);
1053 call_dissector(data_handle,
1054 tvb_new_subset(tvb, offset, -1, -1), pinfo, tree);
1057 /* No padding here */
1064 dissect_optional_22(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1066 proto_tree *bf_tree;
1067 proto_item *bf_item;
1073 bits = tvb_get_guint8(tvb, 2);
1074 type = (bits & 0xc0) >> 6;
1076 bf_item = proto_tree_add_uint(tree, hf_sna_nlp_opti_22_2,
1078 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_opti_22_2);
1080 proto_tree_add_uint(bf_tree, hf_sna_nlp_opti_22_type,
1082 proto_tree_add_uint(bf_tree, hf_sna_nlp_opti_22_raa,
1084 proto_tree_add_boolean(bf_tree, hf_sna_nlp_opti_22_parity,
1086 proto_tree_add_uint(bf_tree, hf_sna_nlp_opti_22_arb,
1089 bits = tvb_get_guint8(tvb, 3);
1091 bf_item = proto_tree_add_uint(tree, hf_sna_nlp_opti_22_3,
1093 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_opti_22_3);
1095 proto_tree_add_uint(bf_tree, hf_sna_nlp_opti_22_ratereq,
1097 proto_tree_add_uint(bf_tree, hf_sna_nlp_opti_22_raterep,
1100 proto_tree_add_item(tree, hf_sna_nlp_opti_22_field1,
1102 proto_tree_add_item(tree, hf_sna_nlp_opti_22_field2,
1106 proto_tree_add_item(tree, hf_sna_nlp_opti_22_field3,
1108 proto_tree_add_item(tree, hf_sna_nlp_opti_22_field4,
1111 if (tvb_offset_exists(tvb, 20))
1112 call_dissector(data_handle,
1113 tvb_new_subset(tvb, 20, -1, -1), pinfo, tree);
1115 if (tvb_offset_exists(tvb, 12))
1116 call_dissector(data_handle,
1117 tvb_new_subset(tvb, 12, -1, -1), pinfo, tree);
1122 dissect_optional(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1124 proto_tree *sub_tree;
1125 proto_item *sub_item;
1126 int offset, type, len;
1133 while (tvb_offset_exists(tvb, offset)) {
1134 len = tvb_get_guint8(tvb, offset);
1135 type = tvb_get_guint8(tvb, offset+1);
1137 /* Prevent loop for invalid crap in packet */
1140 call_dissector(data_handle,
1141 tvb_new_subset(tvb, offset,
1142 -1, -1), pinfo, tree);
1146 ett = ett_sna_nlp_opti_un;
1147 if(type == 0x0d) ett = ett_sna_nlp_opti_0d;
1148 if(type == 0x0e) ett = ett_sna_nlp_opti_0e;
1149 if(type == 0x0f) ett = ett_sna_nlp_opti_0f;
1150 if(type == 0x10) ett = ett_sna_nlp_opti_10;
1151 if(type == 0x12) ett = ett_sna_nlp_opti_12;
1152 if(type == 0x14) ett = ett_sna_nlp_opti_14;
1153 if(type == 0x22) ett = ett_sna_nlp_opti_22;
1155 sub_item = proto_tree_add_text(tree, tvb,
1157 val_to_str(type, sna_nlp_opti_vals,
1158 "Unknown Segment Type"));
1159 sub_tree = proto_item_add_subtree(sub_item, ett);
1160 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_len,
1161 tvb, offset, 1, len);
1162 proto_tree_add_uint(sub_tree, hf_sna_nlp_opti_type,
1163 tvb, offset+1, 1, type);
1167 dissect_optional_0d(tvb_new_subset(tvb, offset,
1168 len << 2, -1), sub_tree);
1171 dissect_optional_0e(tvb_new_subset(tvb, offset,
1172 len << 2, -1), pinfo, sub_tree);
1175 dissect_optional_0f(tvb_new_subset(tvb, offset,
1176 len << 2, -1), pinfo, sub_tree);
1179 dissect_optional_10(tvb_new_subset(tvb, offset,
1180 len << 2, -1), pinfo, sub_tree);
1183 dissect_optional_12(tvb_new_subset(tvb, offset,
1184 len << 2, -1), sub_tree);
1187 dissect_optional_14(tvb_new_subset(tvb, offset,
1188 len << 2, -1), pinfo, sub_tree);
1191 dissect_optional_22(tvb_new_subset(tvb, offset,
1192 len << 2, -1), pinfo, sub_tree);
1195 call_dissector(data_handle,
1196 tvb_new_subset(tvb, offset,
1197 len << 2, -1), pinfo, sub_tree);
1199 offset += (len << 2);
1204 dissect_nlp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
1205 proto_tree *parent_tree)
1207 proto_tree *nlp_tree, *bf_tree;
1208 proto_item *nlp_item, *bf_item, *h_item;
1209 guint8 nhdr_0, nhdr_1, nhdr_x, thdr_8, thdr_9, fid;
1210 guint32 thdr_len, thdr_dlf;
1213 int index = 0, counter = 0;
1218 nhdr_0 = tvb_get_guint8(tvb, index);
1219 nhdr_1 = tvb_get_guint8(tvb, index+1);
1221 if (check_col(pinfo->cinfo, COL_INFO))
1222 col_add_str(pinfo->cinfo, COL_INFO, "HPR NLP Packet");
1225 /* Don't bother setting length. We'll set it later after we
1226 * find the lengths of NHDR */
1227 nlp_item = proto_tree_add_item(tree, hf_sna_nlp_nhdr, tvb,
1229 nlp_tree = proto_item_add_subtree(nlp_item, ett_sna_nlp_nhdr);
1231 bf_item = proto_tree_add_uint(nlp_tree, hf_sna_nlp_nhdr_0, tvb,
1233 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_nhdr_0);
1235 proto_tree_add_uint(bf_tree, hf_sna_nlp_sm, tvb, index, 1,
1237 proto_tree_add_uint(bf_tree, hf_sna_nlp_tpf, tvb, index, 1,
1240 bf_item = proto_tree_add_uint(nlp_tree, hf_sna_nlp_nhdr_1, tvb,
1241 index+1, 1, nhdr_1);
1242 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_nhdr_1);
1244 proto_tree_add_uint(bf_tree, hf_sna_nlp_ft, tvb,
1245 index+1, 1, nhdr_1);
1246 proto_tree_add_boolean(bf_tree, hf_sna_nlp_tspi, tvb,
1247 index+1, 1, nhdr_1);
1248 proto_tree_add_boolean(bf_tree, hf_sna_nlp_slowdn1, tvb,
1249 index+1, 1, nhdr_1);
1250 proto_tree_add_boolean(bf_tree, hf_sna_nlp_slowdn2, tvb,
1251 index+1, 1, nhdr_1);
1253 /* ANR or FR lists */
1258 if ((nhdr_0 & 0xe0) == 0xa0) {
1260 nhdr_x = tvb_get_guint8(tvb, index + counter);
1262 } while (nhdr_x != 0xff);
1264 h_item = proto_tree_add_item(nlp_tree,
1265 hf_sna_nlp_fra, tvb, index, counter, FALSE);
1268 proto_tree_add_text(nlp_tree, tvb, index, 1,
1273 proto_item_set_len(nlp_item, index);
1275 if ((nhdr_1 & 0xf0) == 0x10) {
1276 nhdr_x = tvb_get_guint8(tvb, index);
1278 proto_tree_add_uint(tree, hf_sna_nlp_frh,
1279 tvb, index, 1, nhdr_x);
1282 if (tvb_offset_exists(tvb, index))
1283 call_dissector(data_handle,
1284 tvb_new_subset(tvb, index, -1, -1),
1285 pinfo, parent_tree);
1289 if ((nhdr_0 & 0xe0) == 0xc0) {
1291 nhdr_x = tvb_get_guint8(tvb, index + counter);
1293 } while (nhdr_x != 0xff);
1295 h_item = proto_tree_add_item(nlp_tree, hf_sna_nlp_anr,
1296 tvb, index, counter, FALSE);
1300 proto_tree_add_text(nlp_tree, tvb, index, 1,
1305 proto_item_set_len(nlp_item, index);
1308 thdr_8 = tvb_get_guint8(tvb, index+8);
1309 thdr_9 = tvb_get_guint8(tvb, index+9);
1310 thdr_len = tvb_get_ntohs(tvb, index+10);
1311 thdr_dlf = tvb_get_ntohl(tvb, index+12);
1314 nlp_item = proto_tree_add_item(tree, hf_sna_nlp_thdr, tvb,
1315 index, thdr_len << 2, FALSE);
1316 nlp_tree = proto_item_add_subtree(nlp_item, ett_sna_nlp_thdr);
1318 proto_tree_add_item(nlp_tree, hf_sna_nlp_tcid, tvb,
1320 bf_item = proto_tree_add_uint(nlp_tree, hf_sna_nlp_thdr_8, tvb,
1321 index+8, 1, thdr_8);
1322 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_thdr_8);
1324 proto_tree_add_boolean(bf_tree, hf_sna_nlp_setupi, tvb,
1325 index+8, 1, thdr_8);
1326 proto_tree_add_boolean(bf_tree, hf_sna_nlp_somi, tvb, index+8,
1328 proto_tree_add_boolean(bf_tree, hf_sna_nlp_eomi, tvb, index+8,
1330 proto_tree_add_boolean(bf_tree, hf_sna_nlp_sri, tvb, index+8,
1332 proto_tree_add_boolean(bf_tree, hf_sna_nlp_rasapi, tvb,
1333 index+8, 1, thdr_8);
1334 proto_tree_add_boolean(bf_tree, hf_sna_nlp_retryi, tvb,
1335 index+8, 1, thdr_8);
1337 bf_item = proto_tree_add_uint(nlp_tree, hf_sna_nlp_thdr_9, tvb,
1338 index+9, 1, thdr_9);
1339 bf_tree = proto_item_add_subtree(bf_item, ett_sna_nlp_thdr_9);
1341 proto_tree_add_boolean(bf_tree, hf_sna_nlp_lmi, tvb, index+9,
1343 proto_tree_add_boolean(bf_tree, hf_sna_nlp_cqfi, tvb, index+9,
1345 proto_tree_add_boolean(bf_tree, hf_sna_nlp_osi, tvb, index+9,
1348 proto_tree_add_uint(nlp_tree, hf_sna_nlp_offset, tvb, index+10,
1350 proto_tree_add_uint(nlp_tree, hf_sna_nlp_dlf, tvb, index+12,
1352 proto_tree_add_item(nlp_tree, hf_sna_nlp_bsn, tvb, index+16,
1357 if (((thdr_9 & 0x18) == 0x08) && ((thdr_len << 2) > subindex)) {
1358 counter = tvb_get_guint8(tvb, index + subindex);
1359 if (tvb_get_guint8(tvb, index+subindex+1) == 5)
1361 tvb_new_subset(tvb, index + subindex,
1362 counter+2, -1), nlp_tree, 1, LT);
1364 call_dissector(data_handle,
1365 tvb_new_subset(tvb, index + subindex, counter+2,
1366 -1), pinfo, nlp_tree);
1368 subindex += (counter+2);
1370 if ((thdr_9 & 0x04) && ((thdr_len << 2) > subindex))
1372 tvb_new_subset(tvb, index + subindex,
1373 (thdr_len << 2) - subindex, -1),
1376 index += (thdr_len << 2);
1377 if (((thdr_8 & 0x20) == 0) && thdr_dlf) {
1378 if (check_col(pinfo->cinfo, COL_INFO))
1379 col_add_str(pinfo->cinfo, COL_INFO, "HPR Fragment");
1380 if (tvb_offset_exists(tvb, index)) {
1381 call_dissector(data_handle,
1382 tvb_new_subset(tvb, index, -1, -1), pinfo,
1387 if (tvb_offset_exists(tvb, index)) {
1388 /* Transmission Header Format Identifier */
1389 fid = hi_nibble(tvb_get_guint8(tvb, index));
1390 if (fid == 5) /* Only FID5 allowed for HPR */
1391 dissect_fid(tvb_new_subset(tvb, index, -1, -1), pinfo,
1394 if (tvb_get_ntohs(tvb, index+2) == 0x12ce) {
1396 if (check_col(pinfo->cinfo, COL_INFO))
1397 col_add_str(pinfo->cinfo, COL_INFO,
1399 dissect_gds(tvb_new_subset(tvb, index, -1, -1),
1400 pinfo, tree, parent_tree);
1402 call_dissector(data_handle,
1403 tvb_new_subset(tvb, index, -1, -1),
1404 pinfo, parent_tree);
1409 /* --------------------------------------------------------------------
1410 * Chapter 3 Exchange Identification (XID) Information Fields
1411 * --------------------------------------------------------------------
1415 dissect_xid1(tvbuff_t *tvb, proto_tree *tree)
1420 proto_tree_add_text(tree, tvb, 0, 2, "Reserved");
1425 dissect_xid2(tvbuff_t *tvb, proto_tree *tree)
1432 dlen = tvb_get_guint8(tvb, 0);
1436 while (tvb_offset_exists(tvb, offset)) {
1437 dlen = tvb_get_guint8(tvb, offset+1);
1438 dissect_control(tvb_new_subset(tvb, offset, dlen+2, -1),
1440 offset += (dlen + 2);
1445 dissect_xid3(tvbuff_t *tvb, proto_tree *tree)
1447 proto_tree *sub_tree;
1448 proto_item *sub_ti = NULL;
1449 guint val, dlen, offset;
1454 proto_tree_add_text(tree, tvb, 0, 2, "Reserved");
1456 val = tvb_get_ntohs(tvb, 2);
1458 sub_ti = proto_tree_add_uint(tree, hf_sna_xid_3_8, tvb,
1460 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_3_8);
1462 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_init_self, tvb, 2, 2,
1464 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_stand_bind, tvb, 2, 2,
1466 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_gener_bind, tvb, 2, 2,
1468 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_recve_bind, tvb, 2, 2,
1470 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_actpu, tvb, 2, 2, val);
1471 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_nwnode, tvb, 2, 2, val);
1472 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_cp, tvb, 2, 2, val);
1473 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_cpcp, tvb, 2, 2, val);
1474 proto_tree_add_uint(sub_tree, hf_sna_xid_3_state, tvb, 2, 2, val);
1475 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_nonact, tvb, 2, 2, val);
1476 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_cpchange, tvb, 2, 2,
1479 val = tvb_get_guint8(tvb, 4);
1481 sub_ti = proto_tree_add_uint(tree, hf_sna_xid_3_10, tvb,
1483 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_3_10);
1485 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_asend_bind, tvb, 4, 1,
1487 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_arecv_bind, tvb, 4, 1,
1489 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_quiesce, tvb, 4, 1, val);
1490 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_pucap, tvb, 4, 1, val);
1491 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_pbn, tvb, 4, 1, val);
1492 proto_tree_add_uint(sub_tree, hf_sna_xid_3_pacing, tvb, 4, 1, val);
1494 val = tvb_get_guint8(tvb, 5);
1496 sub_ti = proto_tree_add_uint(tree, hf_sna_xid_3_11, tvb,
1498 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_3_11);
1500 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_tgshare, tvb, 5, 1, val);
1501 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_dedsvc, tvb, 5, 1, val);
1503 val = tvb_get_guint8(tvb, 6);
1505 sub_ti = proto_tree_add_item(tree, hf_sna_xid_3_12, tvb,
1507 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_3_12);
1509 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_negcsup, tvb, 6, 1, val);
1510 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_negcomp, tvb, 6, 1, val);
1512 proto_tree_add_text(tree, tvb, 7, 2, "Reserved");
1514 val = tvb_get_guint8(tvb, 9);
1516 sub_ti = proto_tree_add_item(tree, hf_sna_xid_3_15, tvb,
1518 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_3_15);
1520 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_partg, tvb, 9, 1, val);
1521 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_dlur, tvb, 9, 1, val);
1522 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_dlus, tvb, 9, 1, val);
1523 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_exbn, tvb, 9, 1, val);
1524 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_genodai, tvb, 9, 1, val);
1525 proto_tree_add_uint(sub_tree, hf_sna_xid_3_branch, tvb, 9, 1, val);
1526 proto_tree_add_boolean(sub_tree, hf_sna_xid_3_brnn, tvb, 9, 1, val);
1528 proto_tree_add_item(tree, hf_sna_xid_3_tg, tvb, 10, 1, FALSE);
1529 proto_tree_add_item(tree, hf_sna_xid_3_dlc, tvb, 11, 1, FALSE);
1531 dlen = tvb_get_guint8(tvb, 12);
1533 proto_tree_add_uint(tree, hf_sna_xid_3_dlen, tvb, 12, 1, dlen);
1535 /* FIXME: DLC Dependent Data Go Here */
1539 while (tvb_offset_exists(tvb, offset)) {
1540 dlen = tvb_get_guint8(tvb, offset+1);
1541 dissect_control(tvb_new_subset(tvb, offset, dlen+2, -1),
1548 dissect_xid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
1549 proto_tree *parent_tree)
1551 proto_tree *sub_tree;
1552 proto_item *sub_ti = NULL;
1553 int format, type, len;
1556 len = tvb_get_guint8(tvb, 1);
1557 type = tvb_get_guint8(tvb, 0);
1558 id = tvb_get_ntohl(tvb, 2);
1559 format = hi_nibble(type);
1561 /* Summary information */
1562 if (check_col(pinfo->cinfo, COL_INFO))
1563 col_add_fstr(pinfo->cinfo, COL_INFO,
1564 "SNA XID Format:%d Type:%s", format,
1565 val_to_str(lo_nibble(type), sna_xid_type_vals,
1569 sub_ti = proto_tree_add_item(tree, hf_sna_xid_0, tvb,
1571 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_0);
1573 proto_tree_add_uint(sub_tree, hf_sna_xid_format, tvb, 0, 1,
1575 proto_tree_add_uint(sub_tree, hf_sna_xid_type, tvb, 0, 1,
1578 proto_tree_add_uint(tree, hf_sna_xid_len, tvb, 1, 1, len);
1580 sub_ti = proto_tree_add_item(tree, hf_sna_xid_id, tvb,
1582 sub_tree = proto_item_add_subtree(sub_ti, ett_sna_xid_id);
1584 proto_tree_add_uint(sub_tree, hf_sna_xid_idblock, tvb, 2, 4,
1586 proto_tree_add_uint(sub_tree, hf_sna_xid_idnum, tvb, 2, 4,
1593 dissect_xid1(tvb_new_subset(tvb, 6, len-6, -1),
1597 dissect_xid2(tvb_new_subset(tvb, 6, len-6, -1),
1601 dissect_xid3(tvb_new_subset(tvb, 6, len-6, -1),
1605 /* external standards organizations */
1606 call_dissector(data_handle,
1607 tvb_new_subset(tvb, 6, len-6, -1),
1615 if (tvb_offset_exists(tvb, len))
1616 call_dissector(data_handle,
1617 tvb_new_subset(tvb, len, -1, -1), pinfo, parent_tree);
1620 /* --------------------------------------------------------------------
1621 * Chapter 4 Transmission Headers (THs)
1622 * --------------------------------------------------------------------
1628 mpf_value(guint8 th_byte)
1630 return (th_byte & 0x0c) >> 2;
1633 #define FIRST_FRAG_NUMBER 0
1634 #define MIDDLE_FRAG_NUMBER 1
1635 #define LAST_FRAG_NUMBER 2
1637 /* FID2 is defragged by sequence. The weird thing is that we have neither
1638 * absolute sequence numbers, nor byte offets. Other FIDs have byte offsets
1639 * (the DCF field), but not FID2. The only thing we have to go with is "FIRST",
1640 * "MIDDLE", or "LAST". If the BIU is split into 3 frames, then everything is
1641 * fine, * "FIRST", "MIDDLE", and "LAST" map nicely onto frag-number 0, 1,
1642 * and 2. However, if the BIU is split into 2 frames, then we only have
1643 * "FIRST" and "LAST", and the mapping *should* be frag-number 0 and 1,
1646 * The SNA docs say "FID2 PIUs cannot be blocked because there is no DCF in the
1647 * TH format for deblocking" (note on Figure 4-2 in the IBM SNA documention,
1648 * see the FTP URL in the comment near the top of this file). I *think*
1649 * this means that the fragmented frames cannot arrive out of order.
1650 * Well, I *want* it to mean this, because w/o this limitation, if you
1651 * get a "FIRST" frame and a "LAST" frame, how long should you wait to
1652 * see if a "MIDDLE" frame every arrives????? Thus, if frames *have* to
1653 * arrive in order, then we're saved.
1655 * The problem then boils down to figuring out if "LAST" means frag-number 1
1656 * (in the case of a BIU split into 2 frames) or frag-number 2
1657 * (in the case of a BIU split into 3 frames).
1659 * Assuming fragmented FID2 BIU frames *do* arrive in order, the obvious
1660 * way to handle the mapping of "LAST" to either frag-number 1 or
1661 * frag-number 2 is to keep a hash which tracks the frames seen, etc.
1662 * This consumes resources. A trickier way, but a way which works, is to
1663 * always map the "LAST" BIU segment to frag-number 2. Here's the trickery:
1664 * if we add frag-number 2, which we know to be the "LAST" BIU segment,
1665 * and the reassembly code tells us that the the BIU is still not reassmebled,
1666 * then, owing to the, ahem, /fact/, that fragmented BIU segments arrive
1667 * in order :), we know that 1) "FIRST" did come, and 2) there's no "MIDDLE",
1668 * because this BIU was fragmented into 2 frames, not 3. So, we'll be
1669 * tricky and add a zero-length "MIDDLE" BIU frame (i.e, frag-number 1)
1670 * to complete the reassembly.
1673 defragment_by_sequence(packet_info *pinfo, tvbuff_t *tvb, int offset, int mpf,
1676 fragment_data *fd_head;
1677 int frag_number = -1;
1678 int more_frags = TRUE;
1679 tvbuff_t *rh_tvb = NULL;
1682 /* Determine frag_number and more_frags */
1687 case MPF_FIRST_SEGMENT:
1688 frag_number = FIRST_FRAG_NUMBER;
1690 case MPF_MIDDLE_SEGMENT:
1691 frag_number = MIDDLE_FRAG_NUMBER;
1693 case MPF_LAST_SEGMENT:
1694 frag_number = LAST_FRAG_NUMBER;
1698 g_assert_not_reached();
1701 /* If sna_defragment is on, and this is a fragment.. */
1702 if (frag_number > -1) {
1703 /* XXX - check length ??? */
1704 frag_len = tvb_reported_length_remaining(tvb, offset);
1705 if (tvb_bytes_exist(tvb, offset, frag_len)) {
1706 fd_head = fragment_add_seq(tvb, offset, pinfo, id,
1707 sna_fragment_table, frag_number, frag_len,
1710 /* We added the LAST segment and reassembly didn't
1711 * complete. Insert a zero-length MIDDLE segment to
1712 * turn a 2-frame BIU-fragmentation into a 3-frame
1713 * BIU-fragmentation (empty middle frag).
1714 * See above long comment about this trickery. */
1716 if (mpf == MPF_LAST_SEGMENT && !fd_head) {
1717 fd_head = fragment_add_seq(tvb, offset, pinfo,
1718 id, sna_fragment_table,
1719 MIDDLE_FRAG_NUMBER, 0, TRUE);
1722 if (fd_head != NULL) {
1723 /* We have the complete reassembled payload. */
1724 rh_tvb = tvb_new_real_data(fd_head->data,
1725 fd_head->len, fd_head->len);
1727 /* Add the tvbuff to the chain of tvbuffs
1728 * so that it will get cleaned up too. */
1729 tvb_set_child_real_data_tvbuff(tvb, rh_tvb);
1731 /* Add the defragmented data to the data
1733 add_new_data_source(pinfo, rh_tvb,
1734 "Reassembled SNA BIU");
1741 #define SNA_FID01_ADDR_LEN 2
1743 /* FID Types 0 and 1 */
1745 dissect_fid0_1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1747 proto_tree *bf_tree;
1748 proto_item *bf_item;
1752 const int bytes_in_header = 10;
1756 th_0 = tvb_get_guint8(tvb, 0);
1757 bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1,
1759 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1761 proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0);
1762 proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0);
1763 proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0);
1766 proto_tree_add_text(tree, tvb, 1, 1, "Reserved");
1769 proto_tree_add_item(tree, hf_sna_th_daf, tvb, 2, 2, FALSE);
1773 ptr = tvb_get_ptr(tvb, 2, SNA_FID01_ADDR_LEN);
1774 SET_ADDRESS(&pinfo->net_dst, AT_SNA, SNA_FID01_ADDR_LEN, ptr);
1775 SET_ADDRESS(&pinfo->dst, AT_SNA, SNA_FID01_ADDR_LEN, ptr);
1778 proto_tree_add_item(tree, hf_sna_th_oaf, tvb, 4, 2, FALSE);
1781 ptr = tvb_get_ptr(tvb, 4, SNA_FID01_ADDR_LEN);
1782 SET_ADDRESS(&pinfo->net_src, AT_SNA, SNA_FID01_ADDR_LEN, ptr);
1783 SET_ADDRESS(&pinfo->src, AT_SNA, SNA_FID01_ADDR_LEN, ptr);
1785 /* If we're not filling a proto_tree, return now */
1787 return bytes_in_header;
1789 proto_tree_add_item(tree, hf_sna_th_snf, tvb, 6, 2, FALSE);
1790 proto_tree_add_item(tree, hf_sna_th_dcf, tvb, 8, 2, FALSE);
1792 return bytes_in_header;
1795 #define SNA_FID2_ADDR_LEN 1
1799 dissect_fid2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
1800 tvbuff_t **rh_tvb_ptr, next_dissection_t *continue_dissecting)
1802 proto_tree *bf_tree;
1803 proto_item *bf_item;
1804 guint8 th_0=0, daf=0, oaf=0;
1806 unsigned int mpf, id;
1808 const int bytes_in_header = 6;
1810 th_0 = tvb_get_guint8(tvb, 0);
1811 mpf = mpf_value(th_0);
1814 daf = tvb_get_guint8(tvb, 2);
1815 oaf = tvb_get_guint8(tvb, 3);
1818 bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1,
1820 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1822 proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0);
1823 proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0);
1824 proto_tree_add_uint(bf_tree, hf_sna_th_odai,tvb, 0, 1, th_0);
1825 proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0);
1829 proto_tree_add_text(tree, tvb, 1, 1, "Reserved");
1832 proto_tree_add_uint_format(tree, hf_sna_th_daf, tvb, 2, 1, daf,
1833 "Destination Address Field: 0x%02x", daf);
1837 ptr = tvb_get_ptr(tvb, 2, SNA_FID2_ADDR_LEN);
1838 SET_ADDRESS(&pinfo->net_dst, AT_SNA, SNA_FID2_ADDR_LEN, ptr);
1839 SET_ADDRESS(&pinfo->dst, AT_SNA, SNA_FID2_ADDR_LEN, ptr);
1843 proto_tree_add_uint_format(tree, hf_sna_th_oaf, tvb, 3, 1, oaf,
1844 "Origin Address Field: 0x%02x", oaf);
1848 ptr = tvb_get_ptr(tvb, 3, SNA_FID2_ADDR_LEN);
1849 SET_ADDRESS(&pinfo->net_src, AT_SNA, SNA_FID2_ADDR_LEN, ptr);
1850 SET_ADDRESS(&pinfo->src, AT_SNA, SNA_FID2_ADDR_LEN, ptr);
1852 id = tvb_get_ntohs(tvb, 4);
1854 proto_tree_add_uint(tree, hf_sna_th_snf, tvb, 4, 2, id);
1856 if (mpf != MPF_WHOLE_BIU && !sna_defragment) {
1857 if (mpf == MPF_FIRST_SEGMENT) {
1858 *continue_dissecting = rh_only;
1860 *continue_dissecting = stop_here;
1864 else if (sna_defragment) {
1865 *rh_tvb_ptr = defragment_by_sequence(pinfo, tvb,
1866 bytes_in_header, mpf, id);
1869 return bytes_in_header;
1874 dissect_fid3(tvbuff_t *tvb, proto_tree *tree)
1876 proto_tree *bf_tree;
1877 proto_item *bf_item;
1880 const int bytes_in_header = 2;
1882 /* If we're not filling a proto_tree, return now */
1884 return bytes_in_header;
1886 th_0 = tvb_get_guint8(tvb, 0);
1888 /* Create the bitfield tree */
1889 bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, th_0);
1890 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1892 proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0);
1893 proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0);
1894 proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0);
1896 proto_tree_add_item(tree, hf_sna_th_lsid, tvb, 1, 1, FALSE);
1898 return bytes_in_header;
1902 dissect_fid4(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
1904 proto_tree *bf_tree;
1905 proto_item *bf_item;
1907 guint8 th_byte, mft;
1911 static struct sna_fid_type_4_addr src, dst;
1913 const int bytes_in_header = 26;
1915 /* If we're not filling a proto_tree, return now */
1917 return bytes_in_header;
1919 th_byte = tvb_get_guint8(tvb, offset);
1921 /* Create the bitfield tree */
1922 bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, offset,
1924 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1927 proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb,
1928 offset, 1, th_byte);
1929 proto_tree_add_uint(bf_tree, hf_sna_th_tg_sweep, tvb,
1930 offset, 1, th_byte);
1931 proto_tree_add_uint(bf_tree, hf_sna_th_er_vr_supp_ind, tvb,
1932 offset, 1, th_byte);
1933 proto_tree_add_uint(bf_tree, hf_sna_th_vr_pac_cnt_ind, tvb,
1934 offset, 1, th_byte);
1935 proto_tree_add_uint(bf_tree, hf_sna_th_ntwk_prty, tvb,
1936 offset, 1, th_byte);
1939 th_byte = tvb_get_guint8(tvb, offset);
1941 /* Create the bitfield tree */
1942 bf_item = proto_tree_add_text(tree, tvb, offset, 1,
1943 "Transmision Header Byte 1");
1944 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1947 proto_tree_add_uint(bf_tree, hf_sna_th_tgsf, tvb, offset, 1,
1949 proto_tree_add_boolean(bf_tree, hf_sna_th_mft, tvb, offset, 1,
1951 proto_tree_add_uint(bf_tree, hf_sna_th_piubf, tvb, offset, 1,
1954 mft = th_byte & 0x04;
1956 th_byte = tvb_get_guint8(tvb, offset);
1958 /* Create the bitfield tree */
1959 bf_item = proto_tree_add_text(tree, tvb, offset, 1,
1960 "Transmision Header Byte 2");
1961 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1965 proto_tree_add_uint(bf_tree, hf_sna_th_nlpoi, tvb,
1966 offset, 1, th_byte);
1967 proto_tree_add_uint(bf_tree, hf_sna_th_nlp_cp, tvb,
1968 offset, 1, th_byte);
1970 proto_tree_add_uint(bf_tree, hf_sna_th_iern, tvb,
1971 offset, 1, th_byte);
1973 proto_tree_add_uint(bf_tree, hf_sna_th_ern, tvb, offset, 1,
1977 th_byte = tvb_get_guint8(tvb, offset);
1979 /* Create the bitfield tree */
1980 bf_item = proto_tree_add_text(tree, tvb, offset, 1,
1981 "Transmision Header Byte 3");
1982 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1985 proto_tree_add_uint(bf_tree, hf_sna_th_vrn, tvb, offset, 1,
1987 proto_tree_add_uint(bf_tree, hf_sna_th_tpf, tvb, offset, 1,
1991 th_word = tvb_get_ntohs(tvb, offset);
1993 /* Create the bitfield tree */
1994 bf_item = proto_tree_add_text(tree, tvb, offset, 2,
1995 "Transmision Header Bytes 4-5");
1996 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
1999 proto_tree_add_uint(bf_tree, hf_sna_th_vr_cwi, tvb,
2000 offset, 2, th_word);
2001 proto_tree_add_boolean(bf_tree, hf_sna_th_tg_nonfifo_ind, tvb,
2002 offset, 2, th_word);
2003 proto_tree_add_uint(bf_tree, hf_sna_th_vr_sqti, tvb,
2004 offset, 2, th_word);
2006 /* I'm not sure about byte-order on this one... */
2007 proto_tree_add_uint(bf_tree, hf_sna_th_tg_snf, tvb,
2008 offset, 2, th_word);
2011 th_word = tvb_get_ntohs(tvb, offset);
2013 /* Create the bitfield tree */
2014 bf_item = proto_tree_add_text(tree, tvb, offset, 2,
2015 "Transmision Header Bytes 6-7");
2016 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
2019 proto_tree_add_boolean(bf_tree, hf_sna_th_vrprq, tvb, offset,
2021 proto_tree_add_boolean(bf_tree, hf_sna_th_vrprs, tvb, offset,
2023 proto_tree_add_uint(bf_tree, hf_sna_th_vr_cwri, tvb, offset,
2025 proto_tree_add_boolean(bf_tree, hf_sna_th_vr_rwi, tvb, offset,
2028 /* I'm not sure about byte-order on this one... */
2029 proto_tree_add_uint(bf_tree, hf_sna_th_vr_snf_send, tvb,
2030 offset, 2, th_word);
2034 dsaf = tvb_get_ntohl(tvb, 8);
2036 proto_tree_add_uint(tree, hf_sna_th_dsaf, tvb, offset, 4, dsaf);
2040 osaf = tvb_get_ntohl(tvb, 12);
2042 proto_tree_add_uint(tree, hf_sna_th_osaf, tvb, offset, 4, osaf);
2045 th_byte = tvb_get_guint8(tvb, offset);
2047 /* Create the bitfield tree */
2048 bf_item = proto_tree_add_text(tree, tvb, offset, 2,
2049 "Transmision Header Byte 16");
2050 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
2053 proto_tree_add_boolean(tree, hf_sna_th_snai, tvb, offset, 1, th_byte);
2055 /* We luck out here because in their infinite wisdom the SNA
2056 * architects placed the MPF and EFI fields in the same bitfield
2057 * locations, even though for FID4 they're not in byte 0.
2059 proto_tree_add_uint(tree, hf_sna_th_mpf, tvb, offset, 1, th_byte);
2060 proto_tree_add_uint(tree, hf_sna_th_efi, tvb, offset, 1, th_byte);
2063 /* 1 for byte 16, 1 for byte 17 which is reserved */
2065 def = tvb_get_ntohs(tvb, 18);
2067 proto_tree_add_uint(tree, hf_sna_th_def, tvb, offset, 2, def);
2069 /* Addresses in FID 4 are discontiguous, sigh */
2072 SET_ADDRESS(&pinfo->net_dst, AT_SNA, SNA_FID_TYPE_4_ADDR_LEN,
2074 SET_ADDRESS(&pinfo->dst, AT_SNA, SNA_FID_TYPE_4_ADDR_LEN,
2077 oef = tvb_get_ntohs(tvb, 20);
2078 proto_tree_add_uint(tree, hf_sna_th_oef, tvb, offset+2, 2, oef);
2080 /* Addresses in FID 4 are discontiguous, sigh */
2083 SET_ADDRESS(&pinfo->net_src, AT_SNA, SNA_FID_TYPE_4_ADDR_LEN,
2085 SET_ADDRESS(&pinfo->src, AT_SNA, SNA_FID_TYPE_4_ADDR_LEN,
2088 proto_tree_add_item(tree, hf_sna_th_snf, tvb, offset+4, 2, FALSE);
2089 proto_tree_add_item(tree, hf_sna_th_dcf, tvb, offset+6, 2, FALSE);
2091 return bytes_in_header;
2096 dissect_fid5(tvbuff_t *tvb, proto_tree *tree)
2098 proto_tree *bf_tree;
2099 proto_item *bf_item;
2102 const int bytes_in_header = 12;
2104 /* If we're not filling a proto_tree, return now */
2106 return bytes_in_header;
2108 th_0 = tvb_get_guint8(tvb, 0);
2110 /* Create the bitfield tree */
2111 bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, th_0);
2112 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
2114 proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0);
2115 proto_tree_add_uint(bf_tree, hf_sna_th_mpf, tvb, 0, 1, th_0);
2116 proto_tree_add_uint(bf_tree, hf_sna_th_efi, tvb, 0, 1, th_0);
2118 proto_tree_add_text(tree, tvb, 1, 1, "Reserved");
2119 proto_tree_add_item(tree, hf_sna_th_snf, tvb, 2, 2, FALSE);
2121 proto_tree_add_item(tree, hf_sna_th_sa, tvb, 4, 8, FALSE);
2123 return bytes_in_header;
2129 dissect_fidf(tvbuff_t *tvb, proto_tree *tree)
2131 proto_tree *bf_tree;
2132 proto_item *bf_item;
2135 const int bytes_in_header = 26;
2137 /* If we're not filling a proto_tree, return now */
2139 return bytes_in_header;
2141 th_0 = tvb_get_guint8(tvb, 0);
2143 /* Create the bitfield tree */
2144 bf_item = proto_tree_add_uint(tree, hf_sna_th_0, tvb, 0, 1, th_0);
2145 bf_tree = proto_item_add_subtree(bf_item, ett_sna_th_fid);
2147 proto_tree_add_uint(bf_tree, hf_sna_th_fid, tvb, 0, 1, th_0);
2148 proto_tree_add_text(tree, tvb, 1, 1, "Reserved");
2150 proto_tree_add_item(tree, hf_sna_th_cmd_fmt, tvb, 2, 1, FALSE);
2151 proto_tree_add_item(tree, hf_sna_th_cmd_type, tvb, 3, 1, FALSE);
2152 proto_tree_add_item(tree, hf_sna_th_cmd_sn, tvb, 4, 2, FALSE);
2154 /* Yup, bytes 6-23 are reserved! */
2155 proto_tree_add_text(tree, tvb, 6, 18, "Reserved");
2157 proto_tree_add_item(tree, hf_sna_th_dcf, tvb, 24, 2, FALSE);
2159 return bytes_in_header;
2163 dissect_fid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
2164 proto_tree *parent_tree)
2167 proto_tree *th_tree = NULL, *rh_tree = NULL;
2168 proto_item *th_ti = NULL, *rh_ti = NULL;
2170 int th_header_len = 0;
2171 int offset, rh_offset;
2172 tvbuff_t *rh_tvb = NULL;
2173 next_dissection_t continue_dissecting = everything;
2175 /* Transmission Header Format Identifier */
2176 th_fid = hi_nibble(tvb_get_guint8(tvb, 0));
2178 /* Summary information */
2179 if (check_col(pinfo->cinfo, COL_INFO))
2180 col_add_str(pinfo->cinfo, COL_INFO,
2181 val_to_str(th_fid, sna_th_fid_vals, "Unknown FID: %01x"));
2185 /* Don't bother setting length. We'll set it later after we
2186 * find the length of TH */
2187 th_ti = proto_tree_add_item(tree, hf_sna_th, tvb, 0, -1,
2189 th_tree = proto_item_add_subtree(th_ti, ett_sna_th);
2192 /* Get size of TH */
2196 th_header_len = dissect_fid0_1(tvb, pinfo, th_tree);
2199 th_header_len = dissect_fid2(tvb, pinfo, th_tree,
2200 &rh_tvb, &continue_dissecting);
2203 th_header_len = dissect_fid3(tvb, th_tree);
2206 th_header_len = dissect_fid4(tvb, pinfo, th_tree);
2209 th_header_len = dissect_fid5(tvb, th_tree);
2212 th_header_len = dissect_fidf(tvb, th_tree);
2215 call_dissector(data_handle,
2216 tvb_new_subset(tvb, 1, -1, -1), pinfo, parent_tree);
2220 offset = th_header_len;
2222 /* Short-circuit ? */
2223 if (continue_dissecting == stop_here) {
2225 proto_tree_add_text(tree, tvb, offset, -1,
2226 "BIU segment data");
2231 /* If the FID dissector function didn't create an rh_tvb, then we just
2232 * use the rest of our tvbuff as the rh_tvb. */
2234 rh_tvb = tvb_new_subset(tvb, offset, -1, -1);
2237 /* Process the rest of the SNA packet, starting with RH */
2239 proto_item_set_len(th_ti, th_header_len);
2242 rh_ti = proto_tree_add_item(tree, hf_sna_rh, rh_tvb, rh_offset,
2244 rh_tree = proto_item_add_subtree(rh_ti, ett_sna_rh);
2245 dissect_rh(rh_tvb, rh_offset, rh_tree);
2248 rh_offset += RH_LEN;
2250 if (tvb_offset_exists(rh_tvb, rh_offset)) {
2251 /* Short-circuit ? */
2252 if (continue_dissecting == rh_only) {
2254 proto_tree_add_text(tree, rh_tvb, rh_offset, -1,
2255 "BIU segment data");
2259 call_dissector(data_handle,
2260 tvb_new_subset(rh_tvb, rh_offset, -1, -1),
2261 pinfo, parent_tree);
2265 /* --------------------------------------------------------------------
2266 * Chapter 5 Request/Response Headers (RHs)
2267 * --------------------------------------------------------------------
2271 dissect_rh(tvbuff_t *tvb, int offset, proto_tree *tree)
2273 proto_tree *bf_tree;
2274 proto_item *bf_item;
2275 gboolean is_response;
2276 guint8 rh_0, rh_1, rh_2;
2281 /* Create the bitfield tree for byte 0*/
2282 rh_0 = tvb_get_guint8(tvb, offset);
2283 is_response = (rh_0 & 0x80);
2285 bf_item = proto_tree_add_uint(tree, hf_sna_rh_0, tvb, offset, 1, rh_0);
2286 bf_tree = proto_item_add_subtree(bf_item, ett_sna_rh_0);
2288 proto_tree_add_uint(bf_tree, hf_sna_rh_rri, tvb, offset, 1, rh_0);
2289 proto_tree_add_uint(bf_tree, hf_sna_rh_ru_category, tvb, offset, 1,
2291 proto_tree_add_boolean(bf_tree, hf_sna_rh_fi, tvb, offset, 1, rh_0);
2292 proto_tree_add_boolean(bf_tree, hf_sna_rh_sdi, tvb, offset, 1, rh_0);
2293 proto_tree_add_boolean(bf_tree, hf_sna_rh_bci, tvb, offset, 1, rh_0);
2294 proto_tree_add_boolean(bf_tree, hf_sna_rh_eci, tvb, offset, 1, rh_0);
2297 rh_1 = tvb_get_guint8(tvb, offset);
2299 /* Create the bitfield tree for byte 1*/
2300 bf_item = proto_tree_add_uint(tree, hf_sna_rh_1, tvb, offset, 1, rh_1);
2301 bf_tree = proto_item_add_subtree(bf_item, ett_sna_rh_1);
2303 proto_tree_add_boolean(bf_tree, hf_sna_rh_dr1, tvb, offset, 1, rh_1);
2306 proto_tree_add_boolean(bf_tree, hf_sna_rh_lcci, tvb, offset, 1,
2309 proto_tree_add_boolean(bf_tree, hf_sna_rh_dr2, tvb, offset, 1, rh_1);
2312 proto_tree_add_boolean(bf_tree, hf_sna_rh_rti, tvb, offset, 1,
2315 proto_tree_add_boolean(bf_tree, hf_sna_rh_eri, tvb, offset, 1,
2317 proto_tree_add_boolean(bf_tree, hf_sna_rh_rlwi, tvb, offset, 1,
2321 proto_tree_add_boolean(bf_tree, hf_sna_rh_qri, tvb, offset, 1, rh_1);
2322 proto_tree_add_boolean(bf_tree, hf_sna_rh_pi, tvb, offset, 1, rh_1);
2325 rh_2 = tvb_get_guint8(tvb, offset);
2327 /* Create the bitfield tree for byte 2*/
2328 bf_item = proto_tree_add_uint(tree, hf_sna_rh_2, tvb, offset, 1, rh_2);
2331 bf_tree = proto_item_add_subtree(bf_item, ett_sna_rh_2);
2333 proto_tree_add_boolean(bf_tree, hf_sna_rh_bbi, tvb, offset, 1,
2335 proto_tree_add_boolean(bf_tree, hf_sna_rh_ebi, tvb, offset, 1,
2337 proto_tree_add_boolean(bf_tree, hf_sna_rh_cdi, tvb, offset, 1,
2339 proto_tree_add_uint(bf_tree, hf_sna_rh_csi, tvb, offset, 1,
2341 proto_tree_add_boolean(bf_tree, hf_sna_rh_edi, tvb, offset, 1,
2343 proto_tree_add_boolean(bf_tree, hf_sna_rh_pdi, tvb, offset, 1,
2345 proto_tree_add_boolean(bf_tree, hf_sna_rh_cebi, tvb, offset, 1,
2349 /* XXX - check for sdi. If TRUE, the next 4 bytes will be sense data */
2352 /* --------------------------------------------------------------------
2353 * Chapter 6 Request/Response Units (RUs)
2354 * --------------------------------------------------------------------
2357 /* --------------------------------------------------------------------
2358 * Chapter 9 Common Fields
2359 * --------------------------------------------------------------------
2363 dissect_control_05hpr(tvbuff_t *tvb, proto_tree *tree, int hpr,
2366 proto_tree *bf_tree;
2367 proto_item *bf_item;
2369 guint16 offset, len, pad;
2374 type = tvb_get_guint8(tvb, 2);
2376 bf_item = proto_tree_add_uint(tree, hf_sna_control_05_type, tvb,
2378 bf_tree = proto_item_add_subtree(bf_item, ett_sna_control_05hpr_type);
2380 proto_tree_add_boolean(bf_tree, hf_sna_control_05_ptp, tvb, 2, 1, type);
2381 proto_tree_add_text(tree, tvb, 3, 1, "Reserved");
2385 while (tvb_offset_exists(tvb, offset)) {
2387 len = tvb_get_guint8(tvb, offset+0);
2389 len = tvb_get_guint8(tvb, offset+1);
2392 dissect_control(tvb_new_subset(tvb, offset, len, -1),
2394 pad = (len+3) & 0xfffc;
2396 proto_tree_add_text(tree, tvb, offset+len,
2397 pad-len, "Padding");
2406 dissect_control_05(tvbuff_t *tvb, proto_tree *tree)
2411 proto_tree_add_item(tree, hf_sna_control_05_delay, tvb, 2, 2, FALSE);
2415 dissect_control_0e(tvbuff_t *tvb, proto_tree *tree)
2423 proto_tree_add_item(tree, hf_sna_control_0e_type, tvb, 2, 1, FALSE);
2425 len = tvb_length(tvb) - 3;
2429 buf = g_malloc(len+1);
2430 tvb_memcpy (tvb, buf, 3, len);
2431 EBCDIC_to_ASCII(buf, len);
2433 proto_tree_add_string(tree, hf_sna_control_0e_value, tvb, 3, len, buf);
2438 dissect_control(tvbuff_t *tvb, proto_tree *tree, int hpr, enum parse parse)
2440 proto_tree *sub_tree;
2441 proto_item *sub_item;
2448 len = tvb_get_guint8(tvb, 0);
2449 key = tvb_get_guint8(tvb, 1);
2451 key = tvb_get_guint8(tvb, 0);
2452 len = tvb_get_guint8(tvb, 1);
2454 ett = ett_sna_control_un;
2458 if (hpr) ett = ett_sna_control_05hpr;
2459 else ett = ett_sna_control_05;
2461 if (key == 0x0e) ett = ett_sna_control_0e;
2463 if (((key == 0) || (key == 3) || (key == 5)) && hpr)
2464 sub_item = proto_tree_add_text(tree, tvb, 0, -1,
2465 val_to_str(key, sna_control_hpr_vals,
2466 "Unknown Control Vector"));
2468 sub_item = proto_tree_add_text(tree, tvb, 0, -1,
2469 val_to_str(key, sna_control_vals,
2470 "Unknown Control Vector"));
2471 sub_tree = proto_item_add_subtree(sub_item, ett);
2473 proto_tree_add_uint(sub_tree, hf_sna_control_len,
2475 if (((key == 0) || (key == 3) || (key == 5)) && hpr)
2476 proto_tree_add_uint(sub_tree,
2477 hf_sna_control_hprkey, tvb, 1, 1, key);
2479 proto_tree_add_uint(sub_tree,
2480 hf_sna_control_key, tvb, 1, 1, key);
2482 if (((key == 0) || (key == 3) || (key == 5)) && hpr)
2483 proto_tree_add_uint(sub_tree,
2484 hf_sna_control_hprkey, tvb, 0, 1, key);
2486 proto_tree_add_uint(sub_tree,
2487 hf_sna_control_key, tvb, 0, 1, key);
2488 proto_tree_add_uint(sub_tree, hf_sna_control_len,
2495 dissect_control_05hpr(tvb, sub_tree, hpr,
2498 dissect_control_05(tvb, sub_tree);
2501 dissect_control_0e(tvb, sub_tree);
2506 /* --------------------------------------------------------------------
2507 * Chapter 11 Function Management (FM) Headers
2508 * --------------------------------------------------------------------
2511 /* --------------------------------------------------------------------
2512 * Chapter 12 Presentation Services (PS) Headers
2513 * --------------------------------------------------------------------
2516 /* --------------------------------------------------------------------
2517 * Chapter 13 GDS Variables
2518 * --------------------------------------------------------------------
2522 dissect_gds(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
2523 proto_tree *parent_tree)
2529 proto_tree *gds_tree;
2530 proto_item *gds_item;
2534 type = tvb_get_ntohs(tvb, offset+2);
2537 length = tvb_get_ntohs(tvb, offset) & 0x7fff;
2538 cont = (tvb_get_ntohs(tvb, offset) & 0x8000) ? 1 : 0;
2539 type = tvb_get_ntohs(tvb, offset+2);
2541 if (length < 2 ) /* escape sequence ? */
2544 gds_item = proto_tree_add_item(tree, hf_sna_gds, tvb,
2545 offset, length, FALSE);
2546 gds_tree = proto_item_add_subtree(gds_item,
2549 proto_tree_add_uint(gds_tree, hf_sna_gds_len, tvb,
2551 proto_tree_add_boolean(gds_tree, hf_sna_gds_cont, tvb,
2553 proto_tree_add_uint(gds_tree, hf_sna_gds_type, tvb,
2558 if (tvb_offset_exists(tvb, offset))
2559 call_dissector(data_handle,
2560 tvb_new_subset(tvb, offset, -1, -1), pinfo, parent_tree);
2563 /* --------------------------------------------------------------------
2565 * --------------------------------------------------------------------
2569 dissect_sna(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2572 proto_tree *sna_tree = NULL;
2573 proto_item *sna_ti = NULL;
2575 if (check_col(pinfo->cinfo, COL_PROTOCOL))
2576 col_set_str(pinfo->cinfo, COL_PROTOCOL, "SNA");
2577 if (check_col(pinfo->cinfo, COL_INFO))
2578 col_clear(pinfo->cinfo, COL_INFO);
2580 /* SNA data should be printed in EBCDIC, not ASCII */
2581 pinfo->fd->flags.encoding = CHAR_EBCDIC;
2585 /* Don't bother setting length. We'll set it later after we find
2586 * the lengths of TH/RH/RU */
2587 sna_ti = proto_tree_add_item(tree, proto_sna, tvb, 0, -1,
2589 sna_tree = proto_item_add_subtree(sna_ti, ett_sna);
2592 /* Transmission Header Format Identifier */
2593 fid = hi_nibble(tvb_get_guint8(tvb, 0));
2595 case 0xa: /* HPR Network Layer Packet */
2599 dissect_nlp(tvb, pinfo, sna_tree, tree);
2602 dissect_fid(tvb, pinfo, sna_tree, tree);
2607 dissect_sna_xid(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
2609 proto_tree *sna_tree = NULL;
2610 proto_item *sna_ti = NULL;
2612 if (check_col(pinfo->cinfo, COL_PROTOCOL))
2613 col_set_str(pinfo->cinfo, COL_PROTOCOL, "SNA");
2614 if (check_col(pinfo->cinfo, COL_INFO))
2615 col_clear(pinfo->cinfo, COL_INFO);
2617 /* SNA data should be printed in EBCDIC, not ASCII */
2618 pinfo->fd->flags.encoding = CHAR_EBCDIC;
2622 /* Don't bother setting length. We'll set it later after we find
2623 * the lengths of XID */
2624 sna_ti = proto_tree_add_item(tree, proto_sna_xid, tvb, 0, -1,
2626 sna_tree = proto_item_add_subtree(sna_ti, ett_sna);
2628 dissect_xid(tvb, pinfo, sna_tree, tree);
2634 fragment_table_init(&sna_fragment_table);
2635 reassembled_table_init(&sna_reassembled_table);
2640 proto_register_sna(void)
2642 static hf_register_info hf[] = {
2644 { "Transmission Header", "sna.th", FT_NONE, BASE_NONE,
2645 NULL, 0x0, "", HFILL }},
2648 { "Transmission Header Byte 0", "sna.th.0", FT_UINT8, BASE_HEX,
2650 "TH Byte 0", HFILL }},
2653 { "Format Identifer", "sna.th.fid", FT_UINT8, BASE_HEX,
2654 VALS(sna_th_fid_vals), 0xf0, "", HFILL }},
2657 { "Mapping Field", "sna.th.mpf", FT_UINT8,
2658 BASE_DEC, VALS(sna_th_mpf_vals), 0x0c, "", HFILL }},
2661 { "ODAI Assignment Indicator", "sna.th.odai", FT_UINT8,
2662 BASE_DEC, NULL, 0x02, "", HFILL }},
2665 { "Expedited Flow Indicator", "sna.th.efi", FT_UINT8,
2666 BASE_DEC, VALS(sna_th_efi_vals), 0x01, "", HFILL }},
2669 { "Destination Address Field", "sna.th.daf", FT_UINT16,
2670 BASE_HEX, NULL, 0x0, "", HFILL }},
2673 { "Origin Address Field", "sna.th.oaf", FT_UINT16, BASE_HEX,
2674 NULL, 0x0, "", HFILL }},
2677 { "Sequence Number Field", "sna.th.snf", FT_UINT16, BASE_DEC,
2678 NULL, 0x0, "", HFILL }},
2681 { "Data Count Field", "sna.th.dcf", FT_UINT16, BASE_DEC,
2682 NULL, 0x0, "", HFILL }},
2685 { "Local Session Identification", "sna.th.lsid", FT_UINT8,
2686 BASE_HEX, NULL, 0x0, "", HFILL }},
2688 { &hf_sna_th_tg_sweep,
2689 { "Transmission Group Sweep", "sna.th.tg_sweep", FT_UINT8,
2690 BASE_DEC, VALS(sna_th_tg_sweep_vals), 0x08, "", HFILL }},
2692 { &hf_sna_th_er_vr_supp_ind,
2693 { "ER and VR Support Indicator", "sna.th.er_vr_supp_ind",
2694 FT_UINT8, BASE_DEC, VALS(sna_th_er_vr_supp_ind_vals),
2697 { &hf_sna_th_vr_pac_cnt_ind,
2698 { "Virtual Route Pacing Count Indicator",
2699 "sna.th.vr_pac_cnt_ind", FT_UINT8, BASE_DEC,
2700 VALS(sna_th_vr_pac_cnt_ind_vals), 0x02, "", HFILL }},
2702 { &hf_sna_th_ntwk_prty,
2703 { "Network Priority", "sna.th.ntwk_prty", FT_UINT8, BASE_DEC,
2704 VALS(sna_th_ntwk_prty_vals), 0x01, "", HFILL }},
2707 { "Transmission Group Segmenting Field", "sna.th.tgsf",
2708 FT_UINT8, BASE_HEX, VALS(sna_th_tgsf_vals), 0xc0,
2712 { "MPR FID4 Type", "sna.th.mft", FT_BOOLEAN, BASE_NONE,
2713 NULL, 0x04, "", HFILL }},
2716 { "PIU Blocking Field", "sna.th.piubf", FT_UINT8, BASE_HEX,
2717 VALS(sna_th_piubf_vals), 0x03, "", HFILL }},
2720 { "Initial Explicit Route Number", "sna.th.iern", FT_UINT8,
2721 BASE_DEC, NULL, 0xf0, "", HFILL }},
2724 { "NLP Offset Indicator", "sna.th.nlpoi", FT_UINT8, BASE_DEC,
2725 VALS(sna_th_nlpoi_vals), 0x80, "", HFILL }},
2727 { &hf_sna_th_nlp_cp,
2728 { "NLP Count or Padding", "sna.th.nlp_cp", FT_UINT8, BASE_DEC,
2729 NULL, 0x70, "", HFILL }},
2732 { "Explicit Route Number", "sna.th.ern", FT_UINT8, BASE_DEC,
2733 NULL, 0x0f, "", HFILL }},
2736 { "Virtual Route Number", "sna.th.vrn", FT_UINT8, BASE_DEC,
2737 NULL, 0xf0, "", HFILL }},
2740 { "Transmission Priority Field", "sna.th.tpf", FT_UINT8,
2741 BASE_HEX, VALS(sna_th_tpf_vals), 0x03, "", HFILL }},
2743 { &hf_sna_th_vr_cwi,
2744 { "Virtual Route Change Window Indicator", "sna.th.vr_cwi",
2745 FT_UINT16, BASE_DEC, VALS(sna_th_vr_cwi_vals), 0x8000,
2746 "Change Window Indicator", HFILL }},
2748 { &hf_sna_th_tg_nonfifo_ind,
2749 { "Transmission Group Non-FIFO Indicator",
2750 "sna.th.tg_nonfifo_ind", FT_BOOLEAN, 16,
2751 TFS(&sna_th_tg_nonfifo_ind_truth), 0x4000, "", HFILL }},
2753 { &hf_sna_th_vr_sqti,
2754 { "Virtual Route Sequence and Type Indicator", "sna.th.vr_sqti",
2755 FT_UINT16, BASE_HEX, VALS(sna_th_vr_sqti_vals), 0x3000,
2756 "Route Sequence and Type", HFILL }},
2758 { &hf_sna_th_tg_snf,
2759 { "Transmission Group Sequence Number Field", "sna.th.tg_snf",
2760 FT_UINT16, BASE_DEC, NULL, 0x0fff, "", HFILL }},
2763 { "Virtual Route Pacing Request", "sna.th.vrprq", FT_BOOLEAN,
2764 16, TFS(&sna_th_vrprq_truth), 0x8000, "", HFILL }},
2767 { "Virtual Route Pacing Response", "sna.th.vrprs", FT_BOOLEAN,
2768 16, TFS(&sna_th_vrprs_truth), 0x4000, "", HFILL }},
2770 { &hf_sna_th_vr_cwri,
2771 { "Virtual Route Change Window Reply Indicator",
2772 "sna.th.vr_cwri", FT_UINT16, BASE_DEC,
2773 VALS(sna_th_vr_cwri_vals), 0x2000, "", HFILL }},
2775 { &hf_sna_th_vr_rwi,
2776 { "Virtual Route Reset Window Indicator", "sna.th.vr_rwi",
2777 FT_BOOLEAN, 16, TFS(&sna_th_vr_rwi_truth), 0x1000,
2780 { &hf_sna_th_vr_snf_send,
2781 { "Virtual Route Send Sequence Number Field",
2782 "sna.th.vr_snf_send", FT_UINT16, BASE_DEC, NULL, 0x0fff,
2783 "Send Sequence Number Field", HFILL }},
2786 { "Destination Subarea Address Field", "sna.th.dsaf",
2787 FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
2790 { "Origin Subarea Address Field", "sna.th.osaf", FT_UINT32,
2791 BASE_HEX, NULL, 0x0, "", HFILL }},
2794 { "SNA Indicator", "sna.th.snai", FT_BOOLEAN, 8, NULL, 0x10,
2795 "Used to identify whether the PIU originated or is destined"
2796 " for an SNA or non-SNA device.", HFILL }},
2799 { "Destination Element Field", "sna.th.def", FT_UINT16,
2800 BASE_HEX, NULL, 0x0, "", HFILL }},
2803 { "Origin Element Field", "sna.th.oef", FT_UINT16, BASE_HEX,
2804 NULL, 0x0, "", HFILL }},
2807 { "Session Address", "sna.th.sa", FT_BYTES, BASE_HEX,
2808 NULL, 0x0, "", HFILL }},
2810 { &hf_sna_th_cmd_fmt,
2811 { "Command Format", "sna.th.cmd_fmt", FT_UINT8, BASE_HEX,
2812 NULL, 0x0, "", HFILL }},
2814 { &hf_sna_th_cmd_type,
2815 { "Command Type", "sna.th.cmd_type", FT_UINT8, BASE_HEX,
2816 NULL, 0x0, "", HFILL }},
2818 { &hf_sna_th_cmd_sn,
2819 { "Command Sequence Number", "sna.th.cmd_sn", FT_UINT16,
2820 BASE_DEC, NULL, 0x0, "", HFILL }},
2823 { "Network Layer Packet Header", "sna.nlp.nhdr", FT_NONE,
2824 BASE_NONE, NULL, 0x0, "NHDR", HFILL }},
2826 { &hf_sna_nlp_nhdr_0,
2827 { "Network Layer Packet Header Byte 0", "sna.nlp.nhdr.0",
2828 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
2830 { &hf_sna_nlp_nhdr_1,
2831 { "Network Layer Packet Header Byte 1", "sna.nlp.nhdr.1",
2832 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
2835 { "Switching Mode Field", "sna.nlp.nhdr.sm", FT_UINT8,
2836 BASE_HEX, VALS(sna_nlp_sm_vals), 0xe0, "", HFILL }},
2839 { "Transmission Priority Field", "sna.nlp.nhdr.tpf", FT_UINT8,
2840 BASE_HEX, VALS(sna_th_tpf_vals), 0x06, "", HFILL }},
2843 { "Function Type", "sna.nlp.nhdr.ft", FT_UINT8, BASE_HEX,
2844 VALS(sna_nlp_ft_vals), 0xF0, "", HFILL }},
2847 { "Time Sensitive Packet Indicator", "sna.nlp.nhdr.tspi",
2848 FT_BOOLEAN, 8, TFS(&sna_nlp_tspi_truth), 0x08, "", HFILL }},
2850 { &hf_sna_nlp_slowdn1,
2851 { "Slowdown 1", "sna.nlp.nhdr.slowdn1", FT_BOOLEAN, 8,
2852 TFS(&sna_nlp_slowdn1_truth), 0x04, "", HFILL }},
2854 { &hf_sna_nlp_slowdn2,
2855 { "Slowdown 2", "sna.nlp.nhdr.slowdn2", FT_BOOLEAN, 8,
2856 TFS(&sna_nlp_slowdn2_truth), 0x02, "", HFILL }},
2859 { "Function Routing Address Entry", "sna.nlp.nhdr.fra",
2860 FT_BYTES, BASE_NONE, NULL, 0, "", HFILL }},
2863 { "Automatic Network Routing Entry", "sna.nlp.nhdr.anr",
2864 FT_BYTES, BASE_HEX, NULL, 0, "", HFILL }},
2867 { "Transmission Priority Field", "sna.nlp.frh", FT_UINT8,
2868 BASE_HEX, VALS(sna_nlp_frh_vals), 0, "", HFILL }},
2871 { "RTP Transport Header", "sna.nlp.thdr", FT_NONE, BASE_NONE,
2872 NULL, 0x0, "THDR", HFILL }},
2875 { "Transport Connection Identifier", "sna.nlp.thdr.tcid",
2876 FT_BYTES, BASE_HEX, NULL, 0x0, "TCID", HFILL }},
2878 { &hf_sna_nlp_thdr_8,
2879 { "RTP Transport Packet Header Byte 8", "sna.nlp.thdr.8",
2880 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
2882 { &hf_sna_nlp_setupi,
2883 { "Setup Indicator", "sna.nlp.thdr.setupi", FT_BOOLEAN, 8,
2884 TFS(&sna_nlp_setupi_truth), 0x40, "", HFILL }},
2887 { "Start Of Message Indicator", "sna.nlp.thdr.somi",
2888 FT_BOOLEAN, 8, TFS(&sna_nlp_somi_truth), 0x20, "", HFILL }},
2891 { "End Of Message Indicator", "sna.nlp.thdr.eomi", FT_BOOLEAN,
2892 8, TFS(&sna_nlp_eomi_truth), 0x10, "", HFILL }},
2895 { "Session Request Indicator", "sna.nlp.thdr.sri", FT_BOOLEAN,
2896 8, TFS(&sna_nlp_sri_truth), 0x08, "", HFILL }},
2898 { &hf_sna_nlp_rasapi,
2899 { "Reply ASAP Indicator", "sna.nlp.thdr.rasapi", FT_BOOLEAN,
2900 8, TFS(&sna_nlp_rasapi_truth), 0x04, "", HFILL }},
2902 { &hf_sna_nlp_retryi,
2903 { "Retry Indicator", "sna.nlp.thdr.retryi", FT_BOOLEAN,
2904 8, TFS(&sna_nlp_retryi_truth), 0x02, "", HFILL }},
2906 { &hf_sna_nlp_thdr_9,
2907 { "RTP Transport Packet Header Byte 9", "sna.nlp.thdr.9",
2908 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
2911 { "Last Message Indicator", "sna.nlp.thdr.lmi", FT_BOOLEAN,
2912 8, TFS(&sna_nlp_lmi_truth), 0x80, "", HFILL }},
2915 { "Connection Qualifyer Field Indicator", "sna.nlp.thdr.cqfi",
2916 FT_BOOLEAN, 8, TFS(&sna_nlp_cqfi_truth), 0x08, "", HFILL }},
2919 { "Optional Segments Present Indicator", "sna.nlp.thdr.osi",
2920 FT_BOOLEAN, 8, TFS(&sna_nlp_osi_truth), 0x04, "", HFILL }},
2922 { &hf_sna_nlp_offset,
2923 { "Data Offset/4", "sna.nlp.thdr.offset", FT_UINT16, BASE_HEX,
2924 NULL, 0x0, "Data Offset in Words", HFILL }},
2927 { "Data Length Field", "sna.nlp.thdr.dlf", FT_UINT32, BASE_HEX,
2928 NULL, 0x0, "", HFILL }},
2931 { "Byte Sequence Number", "sna.nlp.thdr.bsn", FT_UINT32,
2932 BASE_HEX, NULL, 0x0, "", HFILL }},
2934 { &hf_sna_nlp_opti_len,
2935 { "Optional Segment Length/4", "sna.nlp.thdr.optional.len",
2936 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
2938 { &hf_sna_nlp_opti_type,
2939 { "Optional Segment Type", "sna.nlp.thdr.optional.type",
2940 FT_UINT8, BASE_HEX, VALS(sna_nlp_opti_vals), 0x0, "",
2943 { &hf_sna_nlp_opti_0d_version,
2944 { "Version", "sna.nlp.thdr.optional.0d.version",
2945 FT_UINT16, BASE_HEX, VALS(sna_nlp_opti_0d_version_vals),
2948 { &hf_sna_nlp_opti_0d_4,
2949 { "Connection Setup Byte 4", "sna.nlp.thdr.optional.0e.4",
2950 FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }},
2952 { &hf_sna_nlp_opti_0d_target,
2953 { "Target Resource ID Present",
2954 "sna.nlp.thdr.optional.0d.target",
2955 FT_BOOLEAN, 8, NULL, 0x80, "", HFILL }},
2957 { &hf_sna_nlp_opti_0d_arb,
2958 { "ARB Flow Control", "sna.nlp.thdr.optional.0d.arb",
2959 FT_BOOLEAN, 8, NULL, 0x10, "", HFILL }},
2961 { &hf_sna_nlp_opti_0d_reliable,
2962 { "Reliable Connection", "sna.nlp.thdr.optional.0d.reliable",
2963 FT_BOOLEAN, 8, NULL, 0x08, "", HFILL }},
2965 { &hf_sna_nlp_opti_0d_dedicated,
2966 { "Dedicated RTP Connection",
2967 "sna.nlp.thdr.optional.0d.dedicated",
2968 FT_BOOLEAN, 8, NULL, 0x04, "", HFILL }},
2970 { &hf_sna_nlp_opti_0e_stat,
2971 { "Status", "sna.nlp.thdr.optional.0e.stat",
2972 FT_UINT8, BASE_HEX, NULL, 0, "", HFILL }},
2974 { &hf_sna_nlp_opti_0e_gap,
2975 { "Gap Detected", "sna.nlp.thdr.optional.0e.gap",
2976 FT_BOOLEAN, 8, NULL, 0x80, "", HFILL }},
2978 { &hf_sna_nlp_opti_0e_idle,
2979 { "RTP Idle Packet", "sna.nlp.thdr.optional.0e.idle",
2980 FT_BOOLEAN, 8, NULL, 0x40, "", HFILL }},
2982 { &hf_sna_nlp_opti_0e_nabsp,
2983 { "Number Of ABSP", "sna.nlp.thdr.optional.0e.nabsp",
2984 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
2986 { &hf_sna_nlp_opti_0e_sync,
2987 { "Status Report Number", "sna.nlp.thdr.optional.0e.sync",
2988 FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
2990 { &hf_sna_nlp_opti_0e_echo,
2991 { "Status Acknowledge Number", "sna.nlp.thdr.optional.0e.echo",
2992 FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
2994 { &hf_sna_nlp_opti_0e_rseq,
2995 { "Received Sequence Number", "sna.nlp.thdr.optional.0e.rseq",
2996 FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
2998 { &hf_sna_nlp_opti_0e_abspbeg,
2999 { "ABSP Begin", "sna.nlp.thdr.optional.0e.abspbeg",
3000 FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
3002 { &hf_sna_nlp_opti_0e_abspend,
3003 { "ABSP End", "sna.nlp.thdr.optional.0e.abspend",
3004 FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
3006 { &hf_sna_nlp_opti_0f_bits,
3007 { "Client Bits", "sna.nlp.thdr.optional.0f.bits",
3008 FT_UINT8, BASE_HEX, VALS(sna_nlp_opti_0f_bits_vals),
3011 { &hf_sna_nlp_opti_10_tcid,
3012 { "Transport Connection Identifier",
3013 "sna.nlp.thdr.optional.10.tcid",
3014 FT_BYTES, BASE_HEX, NULL, 0x0, "TCID", HFILL }},
3016 { &hf_sna_nlp_opti_12_sense,
3017 { "Sense Data", "sna.nlp.thdr.optional.12.sense",
3018 FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL }},
3020 { &hf_sna_nlp_opti_14_si_len,
3021 { "Length", "sna.nlp.thdr.optional.14.si.len",
3022 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
3024 { &hf_sna_nlp_opti_14_si_key,
3025 { "Key", "sna.nlp.thdr.optional.14.si.key",
3026 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3028 { &hf_sna_nlp_opti_14_si_2,
3029 { "Switching Information Byte 2",
3030 "sna.nlp.thdr.optional.14.si.2",
3031 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3033 { &hf_sna_nlp_opti_14_si_refifo,
3034 { "Resequencing (REFIFO) Indicator",
3035 "sna.nlp.thdr.optional.14.si.refifo",
3036 FT_BOOLEAN, 8, NULL, 0x80, "", HFILL }},
3038 { &hf_sna_nlp_opti_14_si_mobility,
3039 { "Mobility Indicator",
3040 "sna.nlp.thdr.optional.14.si.mobility",
3041 FT_BOOLEAN, 8, NULL, 0x40, "", HFILL }},
3043 { &hf_sna_nlp_opti_14_si_dirsearch,
3044 { "Directory Search Required on Path Switch Indicator",
3045 "sna.nlp.thdr.optional.14.si.dirsearch",
3046 FT_BOOLEAN, 8, NULL, 0x20, "", HFILL }},
3048 { &hf_sna_nlp_opti_14_si_limitres,
3049 { "Limited Resource Link Indicator",
3050 "sna.nlp.thdr.optional.14.si.limitres",
3051 FT_BOOLEAN, 8, NULL, 0x10, "", HFILL }},
3053 { &hf_sna_nlp_opti_14_si_ncescope,
3054 { "NCE Scope Indicator",
3055 "sna.nlp.thdr.optional.14.si.ncescope",
3056 FT_BOOLEAN, 8, NULL, 0x08, "", HFILL }},
3058 { &hf_sna_nlp_opti_14_si_mnpsrscv,
3059 { "MNPS RSCV Retention Indicator",
3060 "sna.nlp.thdr.optional.14.si.mnpsrscv",
3061 FT_BOOLEAN, 8, NULL, 0x04, "", HFILL }},
3063 { &hf_sna_nlp_opti_14_si_maxpsize,
3064 { "Maximum Packet Size On Return Path",
3065 "sna.nlp.thdr.optional.14.si.maxpsize",
3066 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3068 { &hf_sna_nlp_opti_14_si_switch,
3069 { "Path Switch Time", "sna.nlp.thdr.optional.14.si.switch",
3070 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3072 { &hf_sna_nlp_opti_14_si_alive,
3073 { "RTP Alive Timer", "sna.nlp.thdr.optional.14.si.alive",
3074 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3076 { &hf_sna_nlp_opti_14_rr_len,
3077 { "Length", "sna.nlp.thdr.optional.14.rr.len",
3078 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
3080 { &hf_sna_nlp_opti_14_rr_key,
3081 { "Key", "sna.nlp.thdr.optional.14.rr.key",
3082 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3084 { &hf_sna_nlp_opti_14_rr_2,
3085 { "Return Route TG Descriptor Byte 2",
3086 "sna.nlp.thdr.optional.14.rr.2",
3087 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3089 { &hf_sna_nlp_opti_14_rr_bfe,
3090 { "BF Entry Indicator",
3091 "sna.nlp.thdr.optional.14.rr.bfe",
3092 FT_BOOLEAN, 8, NULL, 0x80, "", HFILL }},
3094 { &hf_sna_nlp_opti_14_rr_num,
3095 { "Number Of TG Control Vectors",
3096 "sna.nlp.thdr.optional.14.rr.num",
3097 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
3099 { &hf_sna_nlp_opti_22_2,
3100 { "Adaptive Rate Based Segment Byte 2",
3101 "sna.nlp.thdr.optional.22.2",
3102 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3104 { &hf_sna_nlp_opti_22_type,
3106 "sna.nlp.thdr.optional.22.type",
3108 VALS(sna_nlp_opti_22_type_vals), 0xc0, "", HFILL }},
3110 { &hf_sna_nlp_opti_22_raa,
3111 { "Rate Adjustment Action",
3112 "sna.nlp.thdr.optional.22.raa",
3114 VALS(sna_nlp_opti_22_raa_vals), 0x38, "", HFILL }},
3116 { &hf_sna_nlp_opti_22_parity,
3117 { "Parity Indicator",
3118 "sna.nlp.thdr.optional.22.parity",
3119 FT_BOOLEAN, 8, NULL, 0x04, "", HFILL }},
3121 { &hf_sna_nlp_opti_22_arb,
3123 "sna.nlp.thdr.optional.22.arb",
3125 VALS(sna_nlp_opti_22_arb_vals), 0x03, "", HFILL }},
3127 { &hf_sna_nlp_opti_22_3,
3128 { "Adaptive Rate Based Segment Byte 3",
3129 "sna.nlp.thdr.optional.22.3",
3130 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3132 { &hf_sna_nlp_opti_22_ratereq,
3133 { "Rate Request Correlator",
3134 "sna.nlp.thdr.optional.22.ratereq",
3135 FT_UINT8, BASE_DEC, NULL, 0xf0, "", HFILL }},
3137 { &hf_sna_nlp_opti_22_raterep,
3138 { "Rate Reply Correlator",
3139 "sna.nlp.thdr.optional.22.raterep",
3140 FT_UINT8, BASE_DEC, NULL, 0x0f, "", HFILL }},
3142 { &hf_sna_nlp_opti_22_field1,
3143 { "Field 1", "sna.nlp.thdr.optional.22.field1",
3144 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3146 { &hf_sna_nlp_opti_22_field2,
3147 { "Field 2", "sna.nlp.thdr.optional.22.field2",
3148 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3150 { &hf_sna_nlp_opti_22_field3,
3151 { "Field 3", "sna.nlp.thdr.optional.22.field3",
3152 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3154 { &hf_sna_nlp_opti_22_field4,
3155 { "Field 4", "sna.nlp.thdr.optional.22.field4",
3156 FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
3159 { "Request/Response Header", "sna.rh", FT_NONE, BASE_NONE,
3160 NULL, 0x0, "", HFILL }},
3163 { "Request/Response Header Byte 0", "sna.rh.0", FT_UINT8,
3164 BASE_HEX, NULL, 0x0, "", HFILL }},
3167 { "Request/Response Header Byte 1", "sna.rh.1", FT_UINT8,
3168 BASE_HEX, NULL, 0x0, "", HFILL }},
3171 { "Request/Response Header Byte 2", "sna.rh.2", FT_UINT8,
3172 BASE_HEX, NULL, 0x0, "", HFILL }},
3175 { "Request/Response Indicator", "sna.rh.rri", FT_UINT8,
3176 BASE_DEC, VALS(sna_rh_rri_vals), 0x80, "", HFILL }},
3178 { &hf_sna_rh_ru_category,
3179 { "Request/Response Unit Category", "sna.rh.ru_category",
3180 FT_UINT8, BASE_HEX, VALS(sna_rh_ru_category_vals), 0x60,
3184 { "Format Indicator", "sna.rh.fi", FT_BOOLEAN, 8,
3185 TFS(&sna_rh_fi_truth), 0x08, "", HFILL }},
3188 { "Sense Data Included", "sna.rh.sdi", FT_BOOLEAN, 8,
3189 TFS(&sna_rh_sdi_truth), 0x04, "", HFILL }},
3192 { "Begin Chain Indicator", "sna.rh.bci", FT_BOOLEAN, 8,
3193 TFS(&sna_rh_bci_truth), 0x02, "", HFILL }},
3196 { "End Chain Indicator", "sna.rh.eci", FT_BOOLEAN, 8,
3197 TFS(&sna_rh_eci_truth), 0x01, "", HFILL }},
3200 { "Definite Response 1 Indicator", "sna.rh.dr1", FT_BOOLEAN,
3201 8, NULL, 0x80, "", HFILL }},
3204 { "Length-Checked Compression Indicator", "sna.rh.lcci",
3205 FT_BOOLEAN, 8, TFS(&sna_rh_lcci_truth), 0x40, "", HFILL }},
3208 { "Definite Response 2 Indicator", "sna.rh.dr2", FT_BOOLEAN,
3209 8, NULL, 0x20, "", HFILL }},
3212 { "Exception Response Indicator", "sna.rh.eri", FT_BOOLEAN,
3213 8, NULL, 0x10, "", HFILL }},
3216 { "Response Type Indicator", "sna.rh.rti", FT_BOOLEAN,
3217 8, TFS(&sna_rh_rti_truth), 0x10, "", HFILL }},
3220 { "Request Larger Window Indicator", "sna.rh.rlwi", FT_BOOLEAN,
3221 8, NULL, 0x04, "", HFILL }},
3224 { "Queued Response Indicator", "sna.rh.qri", FT_BOOLEAN,
3225 8, TFS(&sna_rh_qri_truth), 0x02, "", HFILL }},
3228 { "Pacing Indicator", "sna.rh.pi", FT_BOOLEAN,
3229 8, NULL, 0x01, "", HFILL }},
3232 { "Begin Bracket Indicator", "sna.rh.bbi", FT_BOOLEAN,
3233 8, NULL, 0x80, "", HFILL }},
3236 { "End Bracket Indicator", "sna.rh.ebi", FT_BOOLEAN,
3237 8, NULL, 0x40, "", HFILL }},
3240 { "Change Direction Indicator", "sna.rh.cdi", FT_BOOLEAN,
3241 8, NULL, 0x20, "", HFILL }},
3244 { "Code Selection Indicator", "sna.rh.csi", FT_UINT8, BASE_DEC,
3245 VALS(sna_rh_csi_vals), 0x08, "", HFILL }},
3248 { "Enciphered Data Indicator", "sna.rh.edi", FT_BOOLEAN, 8,
3249 NULL, 0x04, "", HFILL }},
3252 { "Padded Data Indicator", "sna.rh.pdi", FT_BOOLEAN, 8, NULL,
3256 { "Conditional End Bracket Indicator", "sna.rh.cebi",
3257 FT_BOOLEAN, 8, NULL, 0x01, "", HFILL }},
3260 { "Request/Response Unit", "sna.ru", FT_NONE, BASE_NONE,
3261 NULL, 0x0, "", HFILL }},*/
3264 { "GDS Variable", "sna.gds", FT_NONE, BASE_NONE, NULL, 0x0,
3268 { "GDS Variable Length", "sna.gds.len", FT_UINT16, BASE_DEC,
3269 NULL, 0x7fff, "", HFILL }},
3272 { "Continuation Flag", "sna.gds.cont", FT_BOOLEAN, 16, NULL,
3273 0x8000, "", HFILL }},
3276 { "Type of Variable", "sna.gds.type", FT_UINT16, BASE_HEX,
3277 VALS(sna_gds_var_vals), 0x0, "", HFILL }},
3280 { "XID", "sna.xid", FT_NONE, BASE_NONE, NULL, 0x0,
3281 "XID Frame", HFILL }},
3284 { "XID Byte 0", "sna.xid.0", FT_UINT8, BASE_HEX, NULL, 0x0,
3287 { &hf_sna_xid_format,
3288 { "XID Format", "sna.xid.format", FT_UINT8, BASE_DEC, NULL,
3292 { "XID Type", "sna.xid.type", FT_UINT8, BASE_DEC,
3293 VALS(sna_xid_type_vals), 0x0f, "", HFILL }},
3296 { "XID Length", "sna.xid.len", FT_UINT8, BASE_DEC, NULL, 0x0,
3300 { "Node Identification", "sna.xid.id", FT_UINT32, BASE_HEX,
3301 NULL, 0x0, "", HFILL }},
3303 { &hf_sna_xid_idblock,
3304 { "ID Block", "sna.xid.idblock", FT_UINT32, BASE_HEX, NULL,
3305 0xfff00000, "", HFILL }},
3307 { &hf_sna_xid_idnum,
3308 { "ID Number", "sna.xid.idnum", FT_UINT32, BASE_HEX, NULL,
3309 0x0fffff, "", HFILL }},
3312 { "Characteristics of XID sender", "sna.xid.type3.8", FT_UINT16,
3313 BASE_HEX, NULL, 0x0, "", HFILL }},
3315 { &hf_sna_xid_3_init_self,
3316 { "INIT-SELF support", "sna.xid.type3.initself",
3317 FT_BOOLEAN, 16, NULL, 0x8000, "", HFILL }},
3319 { &hf_sna_xid_3_stand_bind,
3320 { "Stand-Alone BIND Support", "sna.xid.type3.stand_bind",
3321 FT_BOOLEAN, 16, NULL, 0x4000, "", HFILL }},
3323 { &hf_sna_xid_3_gener_bind,
3324 { "Whole BIND PIU generated indicator",
3325 "sna.xid.type3.gener_bind", FT_BOOLEAN, 16, NULL, 0x2000,
3326 "Whole BIND PIU generated", HFILL }},
3328 { &hf_sna_xid_3_recve_bind,
3329 { "Whole BIND PIU required indicator",
3330 "sna.xid.type3.recve_bind", FT_BOOLEAN, 16, NULL, 0x1000,
3331 "Whole BIND PIU required", HFILL }},
3333 { &hf_sna_xid_3_actpu,
3334 { "ACTPU suppression indicator", "sna.xid.type3.actpu",
3335 FT_BOOLEAN, 16, NULL, 0x0080, "", HFILL }},
3337 { &hf_sna_xid_3_nwnode,
3338 { "Sender is network node", "sna.xid.type3.nwnode",
3339 FT_BOOLEAN, 16, NULL, 0x0040, "", HFILL }},
3342 { "Control Point Services", "sna.xid.type3.cp",
3343 FT_BOOLEAN, 16, NULL, 0x0020, "", HFILL }},
3345 { &hf_sna_xid_3_cpcp,
3346 { "CP-CP session support", "sna.xid.type3.cpcp",
3347 FT_BOOLEAN, 16, NULL, 0x0010, "", HFILL }},
3349 { &hf_sna_xid_3_state,
3350 { "XID exchange state indicator", "sna.xid.type3.state",
3351 FT_UINT16, BASE_HEX, VALS(sna_xid_3_state_vals),
3352 0x000c, "", HFILL }},
3354 { &hf_sna_xid_3_nonact,
3355 { "Nonactivation Exchange", "sna.xid.type3.nonact",
3356 FT_BOOLEAN, 16, NULL, 0x0002, "", HFILL }},
3358 { &hf_sna_xid_3_cpchange,
3359 { "CP name change support", "sna.xid.type3.cpchange",
3360 FT_BOOLEAN, 16, NULL, 0x0001, "", HFILL }},
3363 { "XID Type 3 Byte 10", "sna.xid.type3.10", FT_UINT8, BASE_HEX,
3364 NULL, 0x0, "", HFILL }},
3366 { &hf_sna_xid_3_asend_bind,
3367 { "Adaptive BIND pacing support as sender",
3368 "sna.xid.type3.asend_bind", FT_BOOLEAN, 8, NULL, 0x80,
3369 "Pacing support as sender", HFILL }},
3371 { &hf_sna_xid_3_arecv_bind,
3372 { "Adaptive BIND pacing support as receiver",
3373 "sna.xid.type3.asend_recv", FT_BOOLEAN, 8, NULL, 0x40,
3374 "Pacing support as receive", HFILL }},
3376 { &hf_sna_xid_3_quiesce,
3377 { "Quiesce TG Request",
3378 "sna.xid.type3.quiesce", FT_BOOLEAN, 8, NULL, 0x20,
3381 { &hf_sna_xid_3_pucap,
3382 { "PU Capabilities",
3383 "sna.xid.type3.pucap", FT_BOOLEAN, 8, NULL, 0x10,
3386 { &hf_sna_xid_3_pbn,
3387 { "Peripheral Border Node",
3388 "sna.xid.type3.pbn", FT_BOOLEAN, 8, NULL, 0x08,
3391 { &hf_sna_xid_3_pacing,
3392 { "Qualifier for adaptive BIND pacing support",
3393 "sna.xid.type3.pacing", FT_UINT8, BASE_HEX, NULL, 0x03,
3397 { "XID Type 3 Byte 11", "sna.xid.type3.11", FT_UINT8, BASE_HEX,
3398 NULL, 0x0, "", HFILL }},
3400 { &hf_sna_xid_3_tgshare,
3401 { "TG Sharing Prohibited Indicator",
3402 "sna.xid.type3.tgshare", FT_BOOLEAN, 8, NULL, 0x40,
3405 { &hf_sna_xid_3_dedsvc,
3406 { "Dedicated SVC Idicator",
3407 "sna.xid.type3.dedsvc", FT_BOOLEAN, 8, NULL, 0x20,
3411 { "XID Type 3 Byte 12", "sna.xid.type3.12", FT_UINT8, BASE_HEX,
3412 NULL, 0x0, "", HFILL }},
3414 { &hf_sna_xid_3_negcsup,
3415 { "Negotiation Complete Supported",
3416 "sna.xid.type3.negcsup", FT_BOOLEAN, 8, NULL, 0x80,
3419 { &hf_sna_xid_3_negcomp,
3420 { "Negotiation Complete",
3421 "sna.xid.type3.negcomp", FT_BOOLEAN, 8, NULL, 0x40,
3425 { "XID Type 3 Byte 15", "sna.xid.type3.15", FT_UINT8, BASE_HEX,
3426 NULL, 0x0, "", HFILL }},
3428 { &hf_sna_xid_3_partg,
3429 { "Parallel TG Support",
3430 "sna.xid.type3.partg", FT_BOOLEAN, 8, NULL, 0x80,
3433 { &hf_sna_xid_3_dlur,
3434 { "Dependent LU Requester Indicator",
3435 "sna.xid.type3.dlur", FT_BOOLEAN, 8, NULL, 0x40,
3438 { &hf_sna_xid_3_dlus,
3439 { "DLUS Served LU Registration Indicator",
3440 "sna.xid.type3.dlus", FT_BOOLEAN, 8, NULL, 0x20,
3443 { &hf_sna_xid_3_exbn,
3444 { "Extended HPR Border Node",
3445 "sna.xid.type3.exbn", FT_BOOLEAN, 8, NULL, 0x10,
3448 { &hf_sna_xid_3_genodai,
3449 { "Generalized ODAI Usage Option",
3450 "sna.xid.type3.genodai", FT_BOOLEAN, 8, NULL, 0x08,
3453 { &hf_sna_xid_3_branch,
3454 { "Branch Indicator", "sna.xid.type3.branch",
3455 FT_UINT8, BASE_HEX, VALS(sna_xid_3_branch_vals),
3458 { &hf_sna_xid_3_brnn,
3459 { "Option Set 1123 Indicator",
3460 "sna.xid.type3.brnn", FT_BOOLEAN, 8, NULL, 0x01,
3464 { "XID TG", "sna.xid.type3.tg", FT_UINT8, BASE_HEX, NULL, 0x0,
3467 { &hf_sna_xid_3_dlc,
3468 { "XID DLC", "sna.xid.type3.dlc", FT_UINT8, BASE_HEX, NULL, 0x0,
3471 { &hf_sna_xid_3_dlen,
3472 { "DLC Dependent Section Length", "sna.xid.type3.dlen",
3473 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
3475 { &hf_sna_control_len,
3476 { "Control Vector Length", "sna.control.len",
3477 FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
3479 { &hf_sna_control_key,
3480 { "Control Vector Key", "sna.control.key",
3481 FT_UINT8, BASE_HEX, VALS(sna_control_vals), 0x0, "",
3484 { &hf_sna_control_hprkey,
3485 { "Control Vector HPR Key", "sna.control.hprkey",
3486 FT_UINT8, BASE_HEX, VALS(sna_control_hpr_vals), 0x0, "",
3489 { &hf_sna_control_05_delay,
3490 { "Channel Delay", "sna.control.05.delay",
3491 FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
3493 { &hf_sna_control_05_type,
3494 { "Network Address Type", "sna.control.05.type",
3495 FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
3497 { &hf_sna_control_05_ptp,
3498 { "Point-to-point", "sna.control.05.ptp",
3499 FT_BOOLEAN, 8, NULL, 0x80, "", HFILL }},
3501 { &hf_sna_control_0e_type,
3502 { "Type", "sna.control.0e.type",
3503 FT_UINT8, BASE_HEX, VALS(sna_control_0e_type_vals),
3506 { &hf_sna_control_0e_value,
3507 { "Value", "sna.control.0e.value",
3508 FT_STRING, BASE_NONE, NULL, 0, "", HFILL }},
3510 static gint *ett[] = {
3515 &ett_sna_nlp_nhdr_0,
3516 &ett_sna_nlp_nhdr_1,
3518 &ett_sna_nlp_thdr_8,
3519 &ett_sna_nlp_thdr_9,
3520 &ett_sna_nlp_opti_un,
3521 &ett_sna_nlp_opti_0d,
3522 &ett_sna_nlp_opti_0d_4,
3523 &ett_sna_nlp_opti_0e,
3524 &ett_sna_nlp_opti_0e_stat,
3525 &ett_sna_nlp_opti_0e_absp,
3526 &ett_sna_nlp_opti_0f,
3527 &ett_sna_nlp_opti_10,
3528 &ett_sna_nlp_opti_12,
3529 &ett_sna_nlp_opti_14,
3530 &ett_sna_nlp_opti_14_si,
3531 &ett_sna_nlp_opti_14_si_2,
3532 &ett_sna_nlp_opti_14_rr,
3533 &ett_sna_nlp_opti_14_rr_2,
3534 &ett_sna_nlp_opti_22,
3535 &ett_sna_nlp_opti_22_2,
3536 &ett_sna_nlp_opti_22_3,
3549 &ett_sna_control_un,
3550 &ett_sna_control_05,
3551 &ett_sna_control_05hpr,
3552 &ett_sna_control_05hpr_type,
3553 &ett_sna_control_0e,
3555 module_t *sna_module;
3557 proto_sna = proto_register_protocol("Systems Network Architecture",
3559 proto_register_field_array(proto_sna, hf, array_length(hf));
3560 proto_register_subtree_array(ett, array_length(ett));
3561 register_dissector("sna", dissect_sna, proto_sna);
3563 proto_sna_xid = proto_register_protocol(
3564 "Systems Network Architecture XID", "SNA XID", "sna_xid");
3565 register_dissector("sna_xid", dissect_sna_xid, proto_sna_xid);
3567 /* Register configuration options */
3568 sna_module = prefs_register_protocol(proto_sna, NULL);
3569 prefs_register_bool_preference(sna_module, "defragment",
3570 "Reassemble fragmented BIUs",
3571 "Whether fragmented BIUs should be reassembled",
3576 proto_reg_handoff_sna(void)
3578 dissector_handle_t sna_handle;
3579 dissector_handle_t sna_xid_handle;
3581 sna_handle = find_dissector("sna");
3582 sna_xid_handle = find_dissector("sna_xid");
3583 dissector_add("llc.dsap", SAP_SNA_PATHCTRL, sna_handle);
3584 dissector_add("llc.dsap", SAP_SNA1, sna_handle);
3585 dissector_add("llc.dsap", SAP_SNA2, sna_handle);
3586 dissector_add("llc.dsap", SAP_SNA3, sna_handle);
3587 dissector_add("llc.xid_dsap", SAP_SNA_PATHCTRL, sna_xid_handle);
3588 dissector_add("llc.xid_dsap", SAP_SNA1, sna_xid_handle);
3589 dissector_add("llc.xid_dsap", SAP_SNA2, sna_xid_handle);
3590 dissector_add("llc.xid_dsap", SAP_SNA3, sna_xid_handle);
3592 dissector_add("ppp.protocol", PPP_SNA, sna_handle);
3593 data_handle = find_dissector("data");
3595 register_init_routine(sna_init);