aboutsummaryrefslogtreecommitdiffstats
path: root/epan/dissectors/packet-juniper.c
blob: 8f22edb4210871c737a0103d8613c6132e55a72f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
/* packet-juniper.c
 * Routines for Juniper Networks, Inc. packet disassembly
 * Copyright 2005 Hannes Gredler <hannes@juniper.net>
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"

#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/addr_resolv.h>
#include <epan/ppptypes.h>
#include "packet-ppp.h"
#include "packet-juniper.h"
#include <epan/nlpid.h>

void proto_register_juniper(void);
void proto_reg_handoff_juniper(void);

#define JUNIPER_FLAG_PKT_OUT        0x00     /* Outgoing packet */
#define JUNIPER_FLAG_PKT_IN         0x01     /* Incoming packet */
#define JUNIPER_FLAG_NO_L2          0x02     /* L2 header stripped */
#define JUNIPER_FLAG_EXT            0x80     /* extensions present */
#define EXT_TLV_HEADER_SIZE 2
#define JUNIPER_ATM2_PKT_TYPE_MASK  0x70
#define JUNIPER_ATM2_GAP_COUNT_MASK 0x3F
#define JUNIPER_PCAP_MAGIC          0x4d4743

#define JUNIPER_PIC_ATM1   1
#define JUNIPER_PIC_ATM2   2
#define JUNIPER_PIC_MLPPP  3
#define JUNIPER_PIC_MLFR   4

#define JUNIPER_HDR_SNAP   0xaaaa03
#define JUNIPER_HDR_NLPID  0xfefe03
#define JUNIPER_HDR_LLC_UI 0x03
#define JUNIPER_HDR_PPP    0xff03

#define ML_PIC_COOKIE_LEN 2
#define LS_PIC_COOKIE_LEN 4
#define AS_PIC_COOKIE_LEN 8

#define GSP_SVC_REQ_APOLLO 0x40
#define GSP_SVC_REQ_LSQ    0x47

#define LSQ_COOKIE_RE         0x2
#define LSQ_COOKIE_DIR        0x1
#define LSQ_L3_PROTO_SHIFT     4
#define LSQ_L3_PROTO_MASK     0xf0
#define LSQ_L3_PROTO_IPV4     (0 << LSQ_L3_PROTO_SHIFT)
#define LSQ_L3_PROTO_IPV6     (1 << LSQ_L3_PROTO_SHIFT)
#define LSQ_L3_PROTO_MPLS     (2 << LSQ_L3_PROTO_SHIFT)
#define LSQ_L3_PROTO_ISO      (3 << LSQ_L3_PROTO_SHIFT)

#define EXT_TLV_IFD_IDX           1
#define EXT_TLV_IFD_NAME          2
#define EXT_TLV_IFD_MEDIATYPE     3
#define EXT_TLV_IFL_IDX           4
#define EXT_TLV_IFL_UNIT          5
#define EXT_TLV_IFL_ENCAPS        6
#define EXT_TLV_TTP_IFD_MEDIATYPE 7
#define EXT_TLV_TTP_IFL_ENCAPS    8

/* VN related defines */
#define VN_TLV_HDR_SIZE   2
#define VN_FLAG_ALERT     0x00000002
#define VN_FLAG_DROP      0x00000004
#define VN_FLAG_DENY      0x00000008
#define VN_FLAG_LOG       0x00000010
#define VN_FLAG_PASS      0x00000020
#define VN_FLAG_REJECT    0x00000040
#define VN_FLAG_MIRROR    0x00000080
#define VN_FLAG_DIRECTION 0x40000000
#define VN_FLAG_MASK      0xFFFFFFFF
enum {
    VN_TLV_HOST_IP = 1,
    VN_TLV_FLAGS   = 2,
    VN_TLV_SRC_VN  = 3,
    VN_TLV_DST_VN  = 4,
    VN_TLV_LAST    = 255
};

static const value_string ext_tlv_vals[] = {
  { EXT_TLV_IFD_IDX,           "Device Interface Index" },
  { EXT_TLV_IFD_NAME,          "Device Interface Name" },
  { EXT_TLV_IFD_MEDIATYPE,     "Device Media Type" },
  { EXT_TLV_IFL_IDX,           "Logical Interface Index" },
  { EXT_TLV_IFL_UNIT,          "Logical Unit Number" },
  { EXT_TLV_IFL_ENCAPS,        "Logical Interface Encapsulation" },
  { EXT_TLV_TTP_IFD_MEDIATYPE, "TTP derived Device Media Type" },
  { EXT_TLV_TTP_IFL_ENCAPS,    "TTP derived Logical Interface Encapsulation" },
  { 0,             NULL }
};

static const value_string juniper_direction_vals[] = {
  {JUNIPER_FLAG_PKT_OUT, "Out"},
  {JUNIPER_FLAG_PKT_IN,  "In"},
  {0,                    NULL}
};

static const value_string juniper_l2hdr_presence_vals[] = {
  { 0, "Present"},
  { 2, "none"},
  {0,                    NULL}
};

#define JUNIPER_IFML_ETHER              1
#define JUNIPER_IFML_FDDI               2
#define JUNIPER_IFML_TOKENRING          3
#define JUNIPER_IFML_PPP                4
#define JUNIPER_IFML_FRAMERELAY         5
#define JUNIPER_IFML_CISCOHDLC          6
#define JUNIPER_IFML_SMDSDXI            7
#define JUNIPER_IFML_ATMPVC             8
#define JUNIPER_IFML_PPP_CCC            9
#define JUNIPER_IFML_FRAMERELAY_CCC     10
#define JUNIPER_IFML_IPIP               11
#define JUNIPER_IFML_GRE                12
#define JUNIPER_IFML_PIM                13
#define JUNIPER_IFML_PIMD               14
#define JUNIPER_IFML_CISCOHDLC_CCC      15
#define JUNIPER_IFML_VLAN_CCC           16
#define JUNIPER_IFML_MLPPP              17
#define JUNIPER_IFML_MLFR               18
#define JUNIPER_IFML_ML                 19
#define JUNIPER_IFML_LSI                20
#define JUNIPER_IFML_DFE                21
#define JUNIPER_IFML_ATM_CELLRELAY_CCC  22
#define JUNIPER_IFML_CRYPTO             23
#define JUNIPER_IFML_GGSN               24
#define JUNIPER_IFML_LSI_PPP            25
#define JUNIPER_IFML_LSI_CISCOHDLC      26
#define JUNIPER_IFML_PPP_TCC            27
#define JUNIPER_IFML_FRAMERELAY_TCC     28
#define JUNIPER_IFML_CISCOHDLC_TCC      29
#define JUNIPER_IFML_ETHERNET_CCC       30
#define JUNIPER_IFML_VT                 31
#define JUNIPER_IFML_EXTENDED_VLAN_CCC  32
#define JUNIPER_IFML_ETHER_OVER_ATM     33
#define JUNIPER_IFML_MONITOR            34
#define JUNIPER_IFML_ETHERNET_TCC       35
#define JUNIPER_IFML_VLAN_TCC           36
#define JUNIPER_IFML_EXTENDED_VLAN_TCC  37
#define JUNIPER_IFML_CONTROLLER         38
#define JUNIPER_IFML_MFR                39
#define JUNIPER_IFML_LS                 40
#define JUNIPER_IFML_ETHERNET_VPLS      41
#define JUNIPER_IFML_ETHERNET_VLAN_VPLS 42
#define JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS 43
#define JUNIPER_IFML_LT                 44
#define JUNIPER_IFML_SERVICES           45
#define JUNIPER_IFML_ETHER_VPLS_OVER_ATM 46
#define JUNIPER_IFML_FR_PORT_CCC        47
#define JUNIPER_IFML_FRAMERELAY_EXT_CCC 48
#define JUNIPER_IFML_FRAMERELAY_EXT_TCC 49
#define JUNIPER_IFML_FRAMERELAY_FLEX    50
#define JUNIPER_IFML_GGSNI              51
#define JUNIPER_IFML_ETHERNET_FLEX      52
#define JUNIPER_IFML_COLLECTOR          53
#define JUNIPER_IFML_AGGREGATOR         54
#define JUNIPER_IFML_LAPD               55
#define JUNIPER_IFML_PPPOE              56
#define JUNIPER_IFML_PPP_SUBORDINATE    57
#define JUNIPER_IFML_CISCOHDLC_SUBORDINATE  58
#define JUNIPER_IFML_DFC                59
#define JUNIPER_IFML_PICPEER            60

static const value_string juniper_ifmt_vals[] = {
  { JUNIPER_IFML_ETHER, "Ethernet" },
  { JUNIPER_IFML_FDDI, "FDDI" },
  { JUNIPER_IFML_TOKENRING, "Token-Ring" },
  { JUNIPER_IFML_PPP, "PPP" },
  { JUNIPER_IFML_PPP_SUBORDINATE, "PPP-Subordinate" },
  { JUNIPER_IFML_FRAMERELAY, "Frame-Relay" },
  { JUNIPER_IFML_CISCOHDLC, "Cisco-HDLC" },
  { JUNIPER_IFML_SMDSDXI, "SMDS-DXI" },
  { JUNIPER_IFML_ATMPVC, "ATM-PVC" },
  { JUNIPER_IFML_PPP_CCC, "PPP-CCC" },
  { JUNIPER_IFML_FRAMERELAY_CCC, "Frame-Relay-CCC" },
  { JUNIPER_IFML_FRAMERELAY_EXT_CCC, "Extended FR-CCC" },
  { JUNIPER_IFML_IPIP, "IP-over-IP" },
  { JUNIPER_IFML_GRE, "GRE" },
  { JUNIPER_IFML_PIM, "PIM-Encapsulator" },
  { JUNIPER_IFML_PIMD, "PIM-Decapsulator" },
  { JUNIPER_IFML_CISCOHDLC_CCC, "Cisco-HDLC-CCC" },
  { JUNIPER_IFML_VLAN_CCC, "VLAN-CCC" },
  { JUNIPER_IFML_EXTENDED_VLAN_CCC, "Extended-VLAN-CCC" },
  { JUNIPER_IFML_MLPPP, "Multilink-PPP" },
  { JUNIPER_IFML_MLFR, "Multilink-FR" },
  { JUNIPER_IFML_MFR, "Multilink-FR-UNI-NNI" },
  { JUNIPER_IFML_ML, "Multilink" },
  { JUNIPER_IFML_LS, "LinkService" },
  { JUNIPER_IFML_LSI, "LSI" },
  { JUNIPER_IFML_ATM_CELLRELAY_CCC, "ATM-CCC-Cell-Relay" },
  { JUNIPER_IFML_CRYPTO, "IPSEC-over-IP" },
  { JUNIPER_IFML_GGSN, "GGSN" },
  { JUNIPER_IFML_PPP_TCC, "PPP-TCC" },
  { JUNIPER_IFML_FRAMERELAY_TCC, "Frame-Relay-TCC" },
  { JUNIPER_IFML_FRAMERELAY_EXT_TCC, "Extended FR-TCC" },
  { JUNIPER_IFML_CISCOHDLC_TCC, "Cisco-HDLC-TCC" },
  { JUNIPER_IFML_ETHERNET_CCC, "Ethernet-CCC" },
  { JUNIPER_IFML_VT, "VPN-Loopback-tunnel" },
  { JUNIPER_IFML_ETHER_OVER_ATM, "Ethernet-over-ATM" },
  { JUNIPER_IFML_ETHER_VPLS_OVER_ATM, "Ethernet-VPLS-over-ATM" },
  { JUNIPER_IFML_MONITOR, "Monitor" },
  { JUNIPER_IFML_ETHERNET_TCC, "Ethernet-TCC" },
  { JUNIPER_IFML_VLAN_TCC, "VLAN-TCC" },
  { JUNIPER_IFML_EXTENDED_VLAN_TCC, "Extended-VLAN-TCC" },
  { JUNIPER_IFML_CONTROLLER, "Controller" },
  { JUNIPER_IFML_ETHERNET_VPLS, "VPLS" },
  { JUNIPER_IFML_ETHERNET_VLAN_VPLS, "VLAN-VPLS" },
  { JUNIPER_IFML_ETHERNET_EXTENDED_VLAN_VPLS, "Extended-VLAN-VPLS" },
  { JUNIPER_IFML_LT, "Logical-tunnel" },
  { JUNIPER_IFML_SERVICES, "General-Services" },
  { JUNIPER_IFML_PPPOE, "PPPoE" },
  { JUNIPER_IFML_ETHERNET_FLEX, "Flexible-Ethernet-Services" },
  { JUNIPER_IFML_FRAMERELAY_FLEX, "Flexible-FrameRelay" },
  { JUNIPER_IFML_COLLECTOR, "Flow-collection" },
  { JUNIPER_IFML_PICPEER, "PIC Peer" },
  { JUNIPER_IFML_DFC, "Dynamic-Flow-Capture" },
  {0,                    NULL}
};

#define JUNIPER_IFLE_ATM_SNAP           2
#define JUNIPER_IFLE_ATM_NLPID          3
#define JUNIPER_IFLE_ATM_VCMUX          4
#define JUNIPER_IFLE_ATM_LLC            5
#define JUNIPER_IFLE_ATM_PPP_VCMUX      6
#define JUNIPER_IFLE_ATM_PPP_LLC        7
#define JUNIPER_IFLE_ATM_PPP_FUNI       8
#define JUNIPER_IFLE_ATM_CCC            9
#define JUNIPER_IFLE_FR_NLPID           10
#define JUNIPER_IFLE_FR_SNAP            11
#define JUNIPER_IFLE_FR_PPP             12
#define JUNIPER_IFLE_FR_CCC             13
#define JUNIPER_IFLE_ENET2              14
#define JUNIPER_IFLE_IEEE8023_SNAP      15
#define JUNIPER_IFLE_IEEE8023_LLC       16
#define JUNIPER_IFLE_PPP                17
#define JUNIPER_IFLE_CISCOHDLC          18
#define JUNIPER_IFLE_PPP_CCC            19
#define JUNIPER_IFLE_IPIP_NULL          20
#define JUNIPER_IFLE_PIM_NULL           21
#define JUNIPER_IFLE_GRE_NULL           22
#define JUNIPER_IFLE_GRE_PPP            23
#define JUNIPER_IFLE_PIMD_DECAPS        24
#define JUNIPER_IFLE_CISCOHDLC_CCC      25
#define JUNIPER_IFLE_ATM_CISCO_NLPID    26
#define JUNIPER_IFLE_VLAN_CCC           27
#define JUNIPER_IFLE_MLPPP              28
#define JUNIPER_IFLE_MLFR               29
#define JUNIPER_IFLE_LSI_NULL           30
#define JUNIPER_IFLE_AGGREGATE_UNUSED   31
#define JUNIPER_IFLE_ATM_CELLRELAY_CCC  32
#define JUNIPER_IFLE_CRYPTO             33
#define JUNIPER_IFLE_GGSN               34
#define JUNIPER_IFLE_ATM_TCC            35
#define JUNIPER_IFLE_FR_TCC             36
#define JUNIPER_IFLE_PPP_TCC            37
#define JUNIPER_IFLE_CISCOHDLC_TCC      38
#define JUNIPER_IFLE_ETHERNET_CCC       39
#define JUNIPER_IFLE_VT                 40
#define JUNIPER_IFLE_ATM_EOA_LLC        41
#define JUNIPER_IFLE_EXTENDED_VLAN_CCC          42
#define JUNIPER_IFLE_ATM_SNAP_TCC       43
#define JUNIPER_IFLE_MONITOR            44
#define JUNIPER_IFLE_ETHERNET_TCC       45
#define JUNIPER_IFLE_VLAN_TCC           46
#define JUNIPER_IFLE_EXTENDED_VLAN_TCC  47
#define JUNIPER_IFLE_MFR                48
#define JUNIPER_IFLE_ETHERNET_VPLS      49
#define JUNIPER_IFLE_ETHERNET_VLAN_VPLS 50
#define JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS 51
#define JUNIPER_IFLE_SERVICES           52
#define JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC                53
#define JUNIPER_IFLE_FR_PORT_CCC        54
#define JUNIPER_IFLE_ATM_MLPPP_LLC      55
#define JUNIPER_IFLE_ATM_EOA_CCC        56
#define JUNIPER_IFLE_LT_VLAN            57
#define JUNIPER_IFLE_COLLECTOR          58
#define JUNIPER_IFLE_AGGREGATOR         59
#define JUNIPER_IFLE_LAPD               60
#define JUNIPER_IFLE_ATM_PPPOE_LLC          61
#define JUNIPER_IFLE_ETHERNET_PPPOE         62
#define JUNIPER_IFLE_PPPOE                  63
#define JUNIPER_IFLE_PPP_SUBORDINATE        64
#define JUNIPER_IFLE_CISCOHDLC_SUBORDINATE  65
#define JUNIPER_IFLE_DFC                    66
#define JUNIPER_IFLE_PICPEER                67

static const value_string juniper_ifle_vals[] = {
  { JUNIPER_IFLE_AGGREGATOR, "Aggregator" },
  { JUNIPER_IFLE_ATM_CCC, "CCC over ATM" },
  { JUNIPER_IFLE_ATM_CELLRELAY_CCC, "ATM CCC Cell Relay" },
  { JUNIPER_IFLE_ATM_CISCO_NLPID, "CISCO compatible NLPID" },
  { JUNIPER_IFLE_ATM_EOA_CCC, "Ethernet over ATM CCC" },
  { JUNIPER_IFLE_ATM_EOA_LLC, "Ethernet over ATM LLC" },
  { JUNIPER_IFLE_ATM_ETHER_VPLS_ATM_LLC, "Ethernet VPLS over ATM LLC" },
  { JUNIPER_IFLE_ATM_LLC, "ATM LLC" },
  { JUNIPER_IFLE_ATM_MLPPP_LLC, "MLPPP over ATM LLC" },
  { JUNIPER_IFLE_ATM_NLPID, "ATM NLPID" },
  { JUNIPER_IFLE_ATM_PPPOE_LLC, "PPPoE over ATM LLC" },
  { JUNIPER_IFLE_ATM_PPP_FUNI, "PPP over FUNI" },
  { JUNIPER_IFLE_ATM_PPP_LLC, "PPP over ATM LLC" },
  { JUNIPER_IFLE_ATM_PPP_VCMUX, "PPP over ATM VCMUX" },
  { JUNIPER_IFLE_ATM_SNAP, "ATM SNAP" },
  { JUNIPER_IFLE_ATM_SNAP_TCC, "ATM SNAP TCC" },
  { JUNIPER_IFLE_ATM_TCC, "ATM VCMUX TCC" },
  { JUNIPER_IFLE_ATM_VCMUX, "ATM VCMUX" },
  { JUNIPER_IFLE_CISCOHDLC, "C-HDLC" },
  { JUNIPER_IFLE_CISCOHDLC_CCC, "C-HDLC CCC" },
  { JUNIPER_IFLE_CISCOHDLC_SUBORDINATE, "C-HDLC via dialer" },
  { JUNIPER_IFLE_CISCOHDLC_TCC, "C-HDLC TCC" },
  { JUNIPER_IFLE_COLLECTOR, "Collector" },
  { JUNIPER_IFLE_CRYPTO, "Crypto" },
  { JUNIPER_IFLE_ENET2, "Ethernet" },
  { JUNIPER_IFLE_ETHERNET_CCC, "Ethernet CCC" },
  { JUNIPER_IFLE_ETHERNET_EXTENDED_VLAN_VPLS, "Extended VLAN VPLS" },
  { JUNIPER_IFLE_ETHERNET_PPPOE, "PPPoE over Ethernet" },
  { JUNIPER_IFLE_ETHERNET_TCC, "Ethernet TCC" },
  { JUNIPER_IFLE_ETHERNET_VLAN_VPLS, "VLAN VPLS" },
  { JUNIPER_IFLE_ETHERNET_VPLS, "VPLS" },
  { JUNIPER_IFLE_EXTENDED_VLAN_CCC, "Extended VLAN CCC" },
  { JUNIPER_IFLE_EXTENDED_VLAN_TCC, "Extended VLAN TCC" },
  { JUNIPER_IFLE_FR_CCC, "FR CCC" },
  { JUNIPER_IFLE_FR_NLPID, "FR NLPID" },
  { JUNIPER_IFLE_FR_PORT_CCC, "FR CCC" },
  { JUNIPER_IFLE_FR_PPP, "FR PPP" },
  { JUNIPER_IFLE_FR_SNAP, "FR SNAP" },
  { JUNIPER_IFLE_FR_TCC, "FR TCC" },
  { JUNIPER_IFLE_GGSN, "GGSN" },
  { JUNIPER_IFLE_GRE_NULL, "GRE NULL" },
  { JUNIPER_IFLE_GRE_PPP, "PPP over GRE" },
  { JUNIPER_IFLE_IPIP_NULL, "IPIP" },
  { JUNIPER_IFLE_LAPD, "LAPD" },
  { JUNIPER_IFLE_LSI_NULL, "LSI Null" },
  { JUNIPER_IFLE_LT_VLAN, "LT VLAN" },
  { JUNIPER_IFLE_MFR, "MFR" },
  { JUNIPER_IFLE_MLFR, "MLFR" },
  { JUNIPER_IFLE_MLPPP, "MLPPP" },
  { JUNIPER_IFLE_MONITOR, "Monitor" },
  { JUNIPER_IFLE_PIMD_DECAPS, "PIMd" },
  { JUNIPER_IFLE_PIM_NULL, "PIM Null" },
  { JUNIPER_IFLE_PPP, "PPP" },
  { JUNIPER_IFLE_PPPOE, "PPPoE" },
  { JUNIPER_IFLE_PPP_CCC, "PPP CCC" },
  { JUNIPER_IFLE_PPP_SUBORDINATE, "" },
  { JUNIPER_IFLE_PPP_TCC, "PPP TCC" },
  { JUNIPER_IFLE_SERVICES, "General Services" },
  { JUNIPER_IFLE_VLAN_CCC, "VLAN CCC" },
  { JUNIPER_IFLE_VLAN_TCC, "VLAN TCC" },
  { JUNIPER_IFLE_VT, "VT" },
  {0,                    NULL}
};


static int proto_juniper = -1;

static int hf_juniper_magic = -1;
static int hf_juniper_direction = -1;
static int hf_juniper_l2hdr_presence = -1;
static int hf_juniper_ext_total_len = -1;
static int hf_juniper_cookie_len = -1;
static int hf_juniper_atm1_cookie = -1;
static int hf_juniper_atm2_cookie = -1;
static int hf_juniper_mlpic_cookie = -1;
static int hf_juniper_lspic_cookie = -1;
static int hf_juniper_aspic_cookie = -1;
static int hf_juniper_vlan = -1;
static int hf_juniper_proto = -1;
static int hf_juniper_payload_type = -1;
static int hf_juniper_encap_type = -1;
static int hf_juniper_ext_ifd = -1;
static int hf_juniper_ext_ifl = -1;
static int hf_juniper_ext_unit = -1;
static int hf_juniper_ext_ifmt = -1;
static int hf_juniper_ext_ifle = -1;
static int hf_juniper_ext_ttp_ifmt = -1;
static int hf_juniper_ext_ttp_ifle = -1;
static int hf_juniper_unknown_data = -1;

static expert_field ei_juniper_no_magic = EI_INIT;
static expert_field ei_juniper_vn_incorrect_format = EI_INIT;

static int hf_juniper_vn_host_ip = -1;
static int hf_juniper_vn_src = -1;
static int hf_juniper_vn_dst = -1;
static int hf_juniper_vn_flags = -1;
static int hf_juniper_vn_flag_alert = -1;
static int hf_juniper_vn_flag_drop = -1;
static int hf_juniper_vn_flag_deny = -1;
static int hf_juniper_vn_flag_log = -1;
static int hf_juniper_vn_flag_pass = -1;
static int hf_juniper_vn_flag_reject = -1;
static int hf_juniper_vn_flag_mirror = -1;
static int hf_juniper_vn_flag_direction = -1;

static gint ett_juniper = -1;
static gint ett_juniper_vn_flags = -1;

static dissector_handle_t ipv4_handle;

static dissector_table_t payload_table;

static int dissect_juniper_payload_proto(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *juniper_subtree, guint proto, guint offset);
static void dissect_juniper_atm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint16 atm_pictype);
static gboolean ppp_heuristic_guess(guint16 proto);
static guint ip_heuristic_guess(guint8 ip_header_byte);
static guint juniper_svc_cookie_len (guint64 cookie);
static guint juniper_svc_cookie_proto (guint64 cookie, guint16 pictype, guint8 flags);

static const value_string juniper_proto_vals[] = {
  {JUNIPER_PROTO_IP, "IPv4"},
  {JUNIPER_PROTO_MPLS_IP, "MPLS->IPv4"},
  {JUNIPER_PROTO_IP_MPLS, "IPv4->MPLS"},
  {JUNIPER_PROTO_IP6, "IPv6"},
  {JUNIPER_PROTO_MPLS_IP6, "MPLS->IPv6"},
  {JUNIPER_PROTO_IP6_MPLS, "IPv6->MPLS"},
  {JUNIPER_PROTO_PPP, "PPP"},
  {JUNIPER_PROTO_CLNP, "CLNP"},
  {JUNIPER_PROTO_MPLS_CLNP, "MPLS->CLNP"},
  {JUNIPER_PROTO_CLNP_MPLS, "CLNP->MPLS"},
  {JUNIPER_PROTO_ISO, "OSI"},
  {JUNIPER_PROTO_MPLS, "MPLS"},
  {JUNIPER_PROTO_LLC, "LLC"},
  {JUNIPER_PROTO_LLC_SNAP, "LLC/SNAP"},
  {JUNIPER_PROTO_ETHER, "Ethernet"},
  {JUNIPER_PROTO_OAM, "ATM OAM Cell"},
  {JUNIPER_PROTO_Q933, "Q.933"},
  {JUNIPER_PROTO_FRELAY, "Frame-Relay"},
  {JUNIPER_PROTO_CHDLC, "C-HDLC"},
  {0,                    NULL}
};

static const int * vn_flags[] = {
  &hf_juniper_vn_flag_direction,
  &hf_juniper_vn_flag_mirror,
  &hf_juniper_vn_flag_reject,
  &hf_juniper_vn_flag_pass,
  &hf_juniper_vn_flag_log,
  &hf_juniper_vn_flag_deny,
  &hf_juniper_vn_flag_drop,
  &hf_juniper_vn_flag_alert,
  NULL
  };

/* return a TLV value based on TLV length and TLV type (host/network order) */
static int
juniper_ext_get_tlv_value(tvbuff_t *tvb, guint tlv_type, guint tlv_len, guint offset) {

  int tlv_value;

  if (tlv_type < 128) {
    /* TLVs < 128 are little-endian / host order encoded */
    switch (tlv_len) {
    case 1:
      tlv_value = tvb_get_guint8(tvb, offset);
      break;
    case 2:
      tlv_value = tvb_get_letohs(tvb, offset);
      break;
    case 3:
      tlv_value = tvb_get_letoh24(tvb, offset);
      break;
    case 4:
      tlv_value = tvb_get_letohl(tvb, offset);
      break;
    default:
      tlv_value = -1;
      break;
    }
  } else {
    /* TLVs >= 128 are big-endian / network order encoded */
    switch (tlv_len) {
    case 1:
      tlv_value = tvb_get_guint8(tvb, offset);
      break;
    case 2:
      tlv_value = tvb_get_ntohs(tvb, offset);
      break;
    case 3:
      tlv_value = tvb_get_ntoh24(tvb, offset);
      break;
    case 4:
      tlv_value = tvb_get_ntohl(tvb, offset);
      break;
    default:
      tlv_value = -1;
      break;
    }
  }
  return tlv_value;
}

/* generic juniper header dissector  */
static int
dissect_juniper_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree *juniper_subtree, guint8 *flags)
{
  proto_item *tisub, *magic_item;
  guint8     l2hdr_presence,proto,ext_type,ext_len;
  guint16    ext_total_len,ext_offset=6,hdr_len;
  guint32    magic_number,ext_val;

  proto_tree *juniper_ext_subtree = NULL, *juniper_ext_subtree_item = NULL;

  magic_number = tvb_get_ntoh24(tvb, 0);
  *flags = tvb_get_guint8(tvb, 3);
  l2hdr_presence = *flags & JUNIPER_FLAG_NO_L2;

  magic_item = proto_tree_add_item(juniper_subtree, hf_juniper_magic, tvb, 0, 3, ENC_BIG_ENDIAN);

  /* be liberal with magic-number detection -
   * some older JUNOS releases (e.g. 6.4),
   * which are still in the field do not generate magic-numbers */
  if (magic_number != JUNIPER_PCAP_MAGIC) {
    expert_add_info(pinfo, magic_item, &ei_juniper_no_magic);
    return 0;
  }

  proto_tree_add_item(juniper_subtree, hf_juniper_direction, tvb, 3, 1, ENC_NA);

  proto_tree_add_uint(juniper_subtree, hf_juniper_l2hdr_presence, tvb, 3, 1, l2hdr_presence);

  /* calculate hdr_len before cookie, payload */

  /* meta-info extensions (JUNOS >= 7.5) ? */
  if ((*flags & JUNIPER_FLAG_EXT) == JUNIPER_FLAG_EXT) {
    ext_total_len = tvb_get_ntohs(tvb,4);
    hdr_len = 6 + ext_total_len; /* MGC,flags,ext_total_len */

    tisub = proto_tree_add_uint (juniper_subtree, hf_juniper_ext_total_len, tvb, 4, 2, ext_total_len);
    juniper_ext_subtree = proto_item_add_subtree(tisub, ett_juniper);

    while (ext_total_len > EXT_TLV_HEADER_SIZE) {
      ext_type = tvb_get_guint8(tvb, ext_offset);
      ext_len = tvb_get_guint8(tvb, ext_offset+1);

      if (ext_len == 0 || ext_len > (ext_total_len - EXT_TLV_HEADER_SIZE)) /* a few sanity checks */
        break;

      juniper_ext_subtree_item = proto_tree_add_subtree_format(juniper_ext_subtree, tvb, ext_offset, EXT_TLV_HEADER_SIZE + ext_len,
                                   ett_juniper, &tisub, "%s Extension TLV #%u, length: %u",
                                   val_to_str_const(ext_type, ext_tlv_vals, "Unknown"),
                                   ext_type,
                                   ext_len);

      ext_val = juniper_ext_get_tlv_value(tvb, ext_type, ext_len, ext_offset+EXT_TLV_HEADER_SIZE);

      switch (ext_type) {
      case EXT_TLV_IFD_MEDIATYPE:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_ifmt,
                                    tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;
      case EXT_TLV_TTP_IFD_MEDIATYPE:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_ttp_ifmt,
                                    tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;
      case EXT_TLV_IFL_ENCAPS:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_ifle,
                                    tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;
      case EXT_TLV_TTP_IFL_ENCAPS:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_ttp_ifle,
                                    tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;

      case EXT_TLV_IFL_IDX:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_ifl,
                            tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;

      case EXT_TLV_IFL_UNIT:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_unit,
                            tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;
      case EXT_TLV_IFD_IDX:
        proto_tree_add_uint(juniper_ext_subtree_item, hf_juniper_ext_ifd,
                            tvb, ext_offset+EXT_TLV_HEADER_SIZE, ext_len, ext_val);
        break;
      case EXT_TLV_IFD_NAME: /* FIXME print ifname string - lets fall-through for now */
      default:
        proto_item_append_text(tisub, "Unknown");
        break;
      }

      ext_offset += EXT_TLV_HEADER_SIZE + ext_len;
      ext_total_len -= EXT_TLV_HEADER_SIZE + ext_len;
    }

  } else
    hdr_len = 4; /* MGC,flags */

  if ((*flags & JUNIPER_FLAG_NO_L2) == JUNIPER_FLAG_NO_L2) { /* no link header present ? */
    proto = tvb_get_letohl(tvb,hdr_len); /* proto is stored in host-order */
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, proto, hdr_len + 4);
    return -1;
  }

  return hdr_len; /* bytes parsed */

}

/* print the payload protocol  */
static int
dissect_juniper_payload_proto(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
                              proto_tree *juniper_subtree, guint proto, guint offset)
{
  proto_item *ti;
  tvbuff_t   *next_tvb;

  ti = proto_tree_add_uint(juniper_subtree, hf_juniper_payload_type, tvb, offset, 0, proto);
  PROTO_ITEM_SET_GENERATED(ti);

  if (proto == 0xa248)
  {
    proto_tree_add_item(juniper_subtree, hf_juniper_unknown_data, tvb, offset, 4, ENC_NA);
    next_tvb = tvb_new_subset_remaining(tvb, offset+4);
    call_dissector(ipv4_handle, next_tvb, pinfo, tree);
  }
  else
  {
    next_tvb = tvb_new_subset_remaining(tvb, offset);

    if (!dissector_try_uint(payload_table, proto, next_tvb, pinfo, tree))
    {
      /* XXX - left in for posterity, dissection was never done */
      /* case JUNIPER_PROTO_OAM: FIXME call OAM dissector without leading HEC byte */

      call_data_dissector(next_tvb, pinfo, tree);
    }
  }

  return 0;
}

/* MLFR dissector */
static int
dissect_juniper_mlfr(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_item *ti;
  proto_tree* juniper_subtree;
  guint      offset;
  int        bytes_processed;
  guint8     flags;
  guint64    aspic_cookie;
  guint32    lspic_cookie;
  guint16    mlpic_cookie;
  guint      proto,cookie_len;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper MLFR");
  col_clear(pinfo->cinfo, COL_INFO);

  offset = 0;

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper Multi-Link Frame-Relay (FRF.15)");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  aspic_cookie = tvb_get_ntoh64(tvb,offset);
  proto = juniper_svc_cookie_proto(aspic_cookie, JUNIPER_PIC_MLFR, flags);
  cookie_len = juniper_svc_cookie_len(aspic_cookie);

  if (cookie_len == AS_PIC_COOKIE_LEN)
    proto_tree_add_uint64(juniper_subtree, hf_juniper_aspic_cookie,
                          tvb, offset, AS_PIC_COOKIE_LEN, aspic_cookie);
  if (cookie_len == LS_PIC_COOKIE_LEN) {
    lspic_cookie = tvb_get_ntohl(tvb,offset);
    proto_tree_add_uint(juniper_subtree, hf_juniper_lspic_cookie,
                        tvb, offset, LS_PIC_COOKIE_LEN, lspic_cookie);
  }

  offset += cookie_len;

  mlpic_cookie = tvb_get_ntohs(tvb, offset);

  /* AS-PIC IS-IS */
  if (cookie_len == AS_PIC_COOKIE_LEN &&
      proto == JUNIPER_PROTO_UNKNOWN &&
      tvb_get_guint8(tvb,offset) == JUNIPER_HDR_LLC_UI) {
    offset += 1;
    proto = JUNIPER_PROTO_ISO;
  }

  /* LS-PIC IS-IS */
  if (cookie_len == LS_PIC_COOKIE_LEN) {
    if ( tvb_get_ntohs(tvb,offset) == JUNIPER_HDR_LLC_UI ||
         tvb_get_ntohs(tvb,offset) == (JUNIPER_HDR_LLC_UI<<8)) {
      offset += 2;
    }
  }

  /* LS-PIC ? */
  if (cookie_len == LS_PIC_COOKIE_LEN && tvb_get_guint8(tvb,offset) == JUNIPER_HDR_LLC_UI) {
    offset += 1;
  }

  /* child link of an LS-PIC bundle ? */
  if (cookie_len == 0 && tvb_get_ntohs(tvb,offset+ML_PIC_COOKIE_LEN) ==
      (JUNIPER_HDR_LLC_UI<<8 | NLPID_Q_933)) {
    cookie_len = ML_PIC_COOKIE_LEN;
    proto_tree_add_uint(juniper_subtree, hf_juniper_mlpic_cookie,
                        tvb, offset, ML_PIC_COOKIE_LEN, mlpic_cookie);
    offset += 3;
    proto = JUNIPER_PROTO_Q933;
  }

  /* child link of an ML-, LS-, AS-PIC bundle / ML-PIC bundle ? */
  if (cookie_len == 0) {
    if (tvb_get_ntohs(tvb,offset+ML_PIC_COOKIE_LEN) == JUNIPER_HDR_LLC_UI ||
        tvb_get_ntohs(tvb,offset+ML_PIC_COOKIE_LEN) == (JUNIPER_HDR_LLC_UI<<8)) {
      cookie_len = ML_PIC_COOKIE_LEN;
      proto_tree_add_uint(juniper_subtree, hf_juniper_mlpic_cookie,
                          tvb, offset, ML_PIC_COOKIE_LEN, mlpic_cookie);
      offset += 4;
      proto = JUNIPER_PROTO_ISO;
    }
  }

  /* ML-PIC bundle ? */
  if (cookie_len == 0 && tvb_get_guint8(tvb,offset+ML_PIC_COOKIE_LEN) == JUNIPER_HDR_LLC_UI) {
    cookie_len = ML_PIC_COOKIE_LEN;
    proto_tree_add_uint(juniper_subtree, hf_juniper_mlpic_cookie,
                        tvb, offset, ML_PIC_COOKIE_LEN, mlpic_cookie);
    offset += 3;
    proto = JUNIPER_PROTO_ISO;
  }

  ti = proto_tree_add_uint(juniper_subtree, hf_juniper_cookie_len, tvb, offset, 0, cookie_len);
  PROTO_ITEM_SET_GENERATED(ti);

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, proto, offset);

  return tvb_captured_length(tvb);
}



/* MLPPP dissector */
static int
dissect_juniper_mlppp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_item *ti;
  proto_tree* juniper_subtree;
  guint      offset;
  int        bytes_processed;
  guint8     flags;
  guint64    aspic_cookie;
  guint32    lspic_cookie;
  guint16    mlpic_cookie;
  guint      proto,cookie_len;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper MLPPP");
  col_clear(pinfo->cinfo, COL_INFO);

  offset = 0;

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper MLPPP");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  aspic_cookie = tvb_get_ntoh64(tvb,offset);
  proto = juniper_svc_cookie_proto(aspic_cookie, JUNIPER_PIC_MLPPP, flags);
  cookie_len = juniper_svc_cookie_len(aspic_cookie);

  if (cookie_len == AS_PIC_COOKIE_LEN)
    proto_tree_add_uint64(juniper_subtree, hf_juniper_aspic_cookie,
                          tvb, offset, AS_PIC_COOKIE_LEN, aspic_cookie);
  if (cookie_len == LS_PIC_COOKIE_LEN) {
    lspic_cookie = tvb_get_ntohl(tvb,offset);
    proto_tree_add_uint(juniper_subtree, hf_juniper_lspic_cookie,
                        tvb, offset, LS_PIC_COOKIE_LEN, lspic_cookie);
  }

  /* no cookie pattern identified - lets guess from now on */

  /* child link of an LS-PIC bundle ? */
  if (cookie_len == 0 && tvb_get_ntohs(tvb, offset) == JUNIPER_HDR_PPP) {
    proto = JUNIPER_PROTO_PPP;
    offset += 2;
  }

  /* ML-PIC ? */
  if (cookie_len == 0 && ppp_heuristic_guess(tvb_get_ntohs(tvb, offset+2))) {
    proto = JUNIPER_PROTO_PPP;
    cookie_len = 2;
    mlpic_cookie = tvb_get_ntohs(tvb, offset);
    proto_tree_add_uint(juniper_subtree, hf_juniper_mlpic_cookie,
                        tvb, offset, ML_PIC_COOKIE_LEN, mlpic_cookie);
  }

  /* child link of an ML-PIC bundle ? */
  if (cookie_len == 0 && ppp_heuristic_guess(tvb_get_ntohs(tvb, offset))) {
    proto = JUNIPER_PROTO_PPP;
  }

  ti = proto_tree_add_uint(juniper_subtree, hf_juniper_cookie_len, tvb, offset, 0, cookie_len);
  PROTO_ITEM_SET_GENERATED(ti);
  offset += cookie_len;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, proto, offset);

  return tvb_captured_length(tvb);
}


/* PPPoE dissector */
static int
dissect_juniper_pppoe(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_tree* juniper_subtree;
  guint      offset;
  int        bytes_processed;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper PPPoE");
  col_clear(pinfo->cinfo, COL_INFO);

  offset = 0;

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper PPPoE PIC");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_ETHER, offset);

  return tvb_captured_length(tvb);
}

/* Ethernet dissector */
static int
dissect_juniper_ether(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_tree* juniper_subtree;
  guint      offset;
  int        bytes_processed;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper Ethernet");
  col_clear(pinfo->cinfo, COL_INFO);

  offset = 0;

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper Ethernet");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_ETHER, offset);

  return tvb_captured_length(tvb);
}

/* PPP dissector */
static int
dissect_juniper_ppp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_tree* juniper_subtree;
  guint      offset;
  int        bytes_processed;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper PPP");
  col_clear(pinfo->cinfo, COL_INFO);

  offset = 0;

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper PPP");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_PPP, offset+2);

  return tvb_captured_length(tvb);
}

/* Frame-Relay dissector */
static int
dissect_juniper_frelay(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_tree* juniper_subtree;
  guint      offset;
  int        bytes_processed;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper Frame-Relay");
  col_clear(pinfo->cinfo, COL_INFO);

  offset = 0;

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper Frame-Relay");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_FRELAY, offset);

  return tvb_captured_length(tvb);
}

/* C-HDLC dissector */
static int
dissect_juniper_chdlc(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_tree* juniper_subtree;
  guint      offset = 0;
  int        bytes_processed;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper C-HDLC");
  col_clear(pinfo->cinfo, COL_INFO);

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper C-HDLC");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_CHDLC, offset);

  return tvb_captured_length(tvb);
}



/* wrapper for passing the PIC type to the generic ATM dissector */
static int
dissect_juniper_atm1(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  dissect_juniper_atm(tvb,pinfo,tree, JUNIPER_PIC_ATM1);
  return tvb_captured_length(tvb);
}

/* wrapper for passing the PIC type to the generic ATM dissector */
static int
dissect_juniper_atm2(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  dissect_juniper_atm(tvb,pinfo,tree, JUNIPER_PIC_ATM2);
  return tvb_captured_length(tvb);
}

/* generic ATM dissector */
static void
dissect_juniper_atm(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, guint16 atm_pictype)
{
  proto_item *ti;
  proto_tree* juniper_subtree;
  guint8     next_proto = JUNIPER_PROTO_UNKNOWN,atm1_header_len,atm2_header_len,flags;
  guint32    cookie1, proto;
  guint64    cookie2;
  guint      offset = 0;
  int        bytes_processed;
  tvbuff_t   *next_tvb;

  col_clear(pinfo->cinfo, COL_INFO);

  switch (atm_pictype) {
  case JUNIPER_PIC_ATM1:
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper ATM1");
    juniper_subtree = proto_tree_add_subtree(tree, tvb, 0, 0 , ett_juniper, NULL, "Juniper ATM1 PIC");
    break;
  case JUNIPER_PIC_ATM2:
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper ATM2");
    juniper_subtree = proto_tree_add_subtree(tree, tvb, 0, 0 , ett_juniper, NULL, "Juniper ATM2 PIC");
    break;
  default: /* should not happen */
    col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper ATM unknown");
    proto_tree_add_subtree(tree, tvb, 0, 0 , ett_juniper, NULL, "Juniper unknown ATM PIC");
    return;
  }

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);
  if(bytes_processed == -1)
    return;
  else
    offset+=bytes_processed;

  if ((flags & JUNIPER_FLAG_NO_L2) == JUNIPER_FLAG_NO_L2) {
    atm1_header_len = 4;
    atm2_header_len = 4;
  }
  else {
    atm1_header_len = 4;
    atm2_header_len = 8;
  }

  cookie1 = tvb_get_ntohl(tvb, offset);
  cookie2 = tvb_get_ntoh64(tvb, offset);

  if (atm_pictype == JUNIPER_PIC_ATM1) {
    proto_tree_add_uint(juniper_subtree, hf_juniper_atm1_cookie, tvb, offset, 4, cookie1);
    offset += atm1_header_len;
    if ((cookie1 >> 24) == 0x80) /* OAM cell ? */
      next_proto = JUNIPER_PROTO_OAM;
  }
  else { /* JUNIPER_PIC_ATM2 */
    proto_tree_add_uint64(juniper_subtree, hf_juniper_atm2_cookie, tvb, offset, 8, cookie2);
    offset += atm2_header_len;
    if (cookie2 & 0x70) /* OAM cell ? */
      next_proto = JUNIPER_PROTO_OAM;
  }

  next_tvb = tvb_new_subset_remaining(tvb, offset);

  if (next_proto == JUNIPER_PROTO_OAM) {
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_OAM, offset);
    return;
  }

  proto = tvb_get_ntoh24(tvb, offset); /* first try: 24-Bit guess */

  if (proto == JUNIPER_HDR_NLPID) {
    /*
     * This begins with something that appears to be an LLC header for
     * OSI; is this LLC-multiplexed traffic?
     */
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_LLC, offset);
    return;
  }

  if (proto == JUNIPER_HDR_SNAP) {
    /*
     * This begins with something that appears to be an LLC header for
     * SNAP; is this LLC-multiplexed traffic?
     */
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_LLC_SNAP, offset);
    return;
  }

  if ((flags & JUNIPER_FLAG_PKT_IN) != JUNIPER_FLAG_PKT_IN && /* ether-over-1483 encaps ? */
      (cookie1 & JUNIPER_ATM2_GAP_COUNT_MASK) &&
      atm_pictype != JUNIPER_PIC_ATM1) {
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_ETHER, offset);
    return;
  }

  proto = tvb_get_ntohs(tvb, offset); /* second try: 16-Bit guess */

  if ( ppp_heuristic_guess( (guint16) proto) &&
       atm_pictype != JUNIPER_PIC_ATM1) {
    /*
     * This begins with something that appears to be a PPP protocol
     * type; is this VC-multiplexed PPPoA?
     * That's not supported on ATM1 PICs.
     */
    proto_tree_add_uint_format_value(juniper_subtree, hf_juniper_encap_type, tvb, offset, 0, 0, "VC-MUX");
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_PPP, offset);
    return;
  }

  proto = tvb_get_guint8(tvb, offset); /* third try: 8-Bit guess */

  if ( proto == JUNIPER_HDR_LLC_UI ) {
    /*
     * Cisco style NLPID encaps?
     * Is the 0x03 an LLC UI control field?
     */
    proto_tree_add_uint_format_value(juniper_subtree, hf_juniper_encap_type, tvb, offset, 1, 1, "Cisco NLPID");
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_ISO, offset+1);
    return;
  }

  next_proto = ip_heuristic_guess( (guint8) proto);
  if (next_proto != JUNIPER_PROTO_UNKNOWN) { /* last resort: VC-MUX encaps ? */
    /*
     * This begins with something that might be the first byte of
     * an IPv4 or IPv6 packet; is this VC-multiplexed IP?
     */
    proto_tree_add_uint_format_value(juniper_subtree, hf_juniper_encap_type, tvb, offset, 0, 2, "VC-MUX");
    dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, next_proto, offset);
    return;
  }

  /* could not figure what it is */
  ti = proto_tree_add_uint_format_value(juniper_subtree, hf_juniper_payload_type, tvb, offset, 0, 0xFFFF, "Unknown");
  proto_item_set_len(ti, tvb_reported_length_remaining(tvb, offset));
  call_data_dissector(next_tvb, pinfo, tree);
}


static int dissect_juniper_ggsn(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree, void* data _U_) {

  proto_tree* juniper_subtree;
  guint      offset = 0;
  int        bytes_processed;
  guint8     flags;
  guint16    proto;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper GGSN");
  col_clear(pinfo->cinfo, COL_INFO);

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper GGSN");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  proto = tvb_get_letohs(tvb, offset); /* fetch protocol */

  proto_tree_add_uint(juniper_subtree, hf_juniper_proto, tvb, offset, 2, proto);
  proto_tree_add_item(juniper_subtree, hf_juniper_vlan, tvb, offset+2, 2, ENC_LITTLE_ENDIAN);
  offset += 4;

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, proto, offset);

  return tvb_captured_length(tvb);
}

static int dissect_juniper_vp(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree, void* data _U_) {

  proto_tree* juniper_subtree;
  guint      offset = 0;
  int        bytes_processed;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper Voice PIC");
  col_clear(pinfo->cinfo, COL_INFO);

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper Voice PIC");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if(bytes_processed == -1)
    return 4;
  else
    offset+=bytes_processed;

  /*
   * Right know IPv4 is the only protocol we may encounter.
   * For the future there should be sufficient space in the 18-byte
   * empty header before payload starts.
   */
  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_IP, offset+18);
  return tvb_captured_length(tvb);
}

/* Wrapper for Juniper service PIC coookie dissector */
static int
dissect_juniper_svcs(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
  proto_tree* juniper_subtree;
  guint      offset = 0;
  int bytes_processed = 0;
  guint8     flags;

  col_set_str(pinfo->cinfo, COL_PROTOCOL, "Juniper Services");
  col_clear(pinfo->cinfo, COL_INFO);

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 4, ett_juniper, NULL, "Juniper Services cookie");

  /* parse header, match mgc, extract flags and build first tree */
  bytes_processed = dissect_juniper_header(tvb, pinfo, tree, juniper_subtree, &flags);

  if (bytes_processed == -1)
      return 4;
  else
      offset+=bytes_processed;

  if (flags & JUNIPER_FLAG_PKT_IN) {
      proto_tree_add_uint(juniper_subtree, hf_juniper_proto, tvb, offset, 2, JUNIPER_PROTO_IP);
      offset += 16;
  } else {
      offset += 12;
  }

  dissect_juniper_payload_proto(tvb, pinfo, tree, juniper_subtree, JUNIPER_PROTO_IP, offset);
  return tvb_captured_length(tvb);
}

static int dissect_juniper_vn(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree, void* data _U_)
{
  proto_item *ti;
  proto_tree* juniper_subtree;
  guint offset = 0;
  guint32 tlv_type, tlv_len;

  col_set_str(pinfo->cinfo, COL_PROTOCOL,
          "Juniper Virtual Network Information");
  col_clear(pinfo->cinfo, COL_INFO);

  juniper_subtree = proto_tree_add_subtree(tree, tvb, offset, 20,
          ett_juniper, &ti, "Juniper Virtual Network Information");

  tlv_type = tvb_get_guint8(tvb, offset);
  tlv_len = tvb_get_guint8(tvb, (offset + 1));
  offset += VN_TLV_HDR_SIZE;

  while (tlv_type != 255) {

      switch (tlv_type) {
          case VN_TLV_HOST_IP:
              proto_tree_add_item(juniper_subtree, hf_juniper_vn_host_ip, tvb,
                      offset, 4, ENC_BIG_ENDIAN);
              break;
          case VN_TLV_FLAGS:
              proto_tree_add_bitmask(juniper_subtree, tvb, offset, hf_juniper_vn_flags, ett_juniper_vn_flags, vn_flags, ENC_BIG_ENDIAN);
              break;
          case VN_TLV_SRC_VN:
              proto_tree_add_item(juniper_subtree, hf_juniper_vn_src, tvb, offset, tlv_len, ENC_NA|ENC_ASCII);
              break;
          case VN_TLV_DST_VN:
              proto_tree_add_item(juniper_subtree, hf_juniper_vn_dst, tvb, offset, tlv_len, ENC_NA|ENC_ASCII);
              break;
          default:
              proto_tree_add_expert(juniper_subtree, pinfo, &ei_juniper_vn_incorrect_format, tvb, 0, 0);
              return offset;
      }

      offset += tlv_len;
      tlv_type = tvb_get_guint8(tvb, offset);
      tlv_len = tvb_get_guint8(tvb, (offset + 1));
      offset += VN_TLV_HDR_SIZE;
  }

  offset+=tlv_len;
  dissect_juniper_payload_proto(tvb, pinfo, tree, ti, JUNIPER_PROTO_ETHER, offset);

  return tvb_captured_length(tvb);
}

/* list of Juniper supported PPP proto IDs */
static gboolean
ppp_heuristic_guess(guint16 proto) {

  switch(proto) {
  case PPP_IP :
  case PPP_OSI :
  case PPP_MPLS_UNI :
  case PPP_MPLS_MULTI :
  case PPP_IPCP :
  case PPP_OSINLCP :
  case PPP_MPLSCP :
  case PPP_LCP :
  case PPP_PAP :
  case PPP_CHAP :
  case PPP_MP :
  case PPP_IPV6 :
  case PPP_IPV6CP :
    return TRUE;

  default:
    return FALSE; /* did not find a ppp header */
  }
}

/*
 * return the IP version number based on the first byte of the IP header
 * returns 0 if it does not match a valid first IPv4/IPv6 header byte
 */
static guint
ip_heuristic_guess(guint8 ip_header_byte) {

  switch(ip_header_byte) {
  case 0x45:
  case 0x46:
  case 0x47:
  case 0x48:
  case 0x49:
  case 0x4a:
  case 0x4b:
  case 0x4c:
  case 0x4d:
  case 0x4e:
  case 0x4f:
    return JUNIPER_PROTO_IP;
  case 0x60:
  case 0x61:
  case 0x62:
  case 0x63:
  case 0x64:
  case 0x65:
  case 0x66:
  case 0x67:
  case 0x68:
  case 0x69:
  case 0x6a:
  case 0x6b:
  case 0x6c:
  case 0x6d:
  case 0x6e:
  case 0x6f:
    return JUNIPER_PROTO_IP6;
  default:
    return JUNIPER_PROTO_UNKNOWN; /* did not find a ip header */
  }
}

/* return cookie length dep. on cookie SVC id */
static
guint juniper_svc_cookie_len (guint64 cookie) {

  guint8 svc_cookie_id;
  svc_cookie_id = (guint8)(cookie >> 56) & 0xff;

  switch(svc_cookie_id) {
  case 0x54:
    return LS_PIC_COOKIE_LEN;
  case GSP_SVC_REQ_APOLLO:
  case GSP_SVC_REQ_LSQ:
    return AS_PIC_COOKIE_LEN;
  default:
    return 0;
  }
}

/* return the next-level protocol based on cookie input */
static guint
juniper_svc_cookie_proto (guint64 cookie, guint16 pictype, guint8 flags) {

  guint8 svc_cookie_id;
  guint16 lsq_proto;
  guint8 lsq_dir;

  svc_cookie_id = (guint8)(cookie >> 56) & 0xff;
  lsq_proto = (guint16)((cookie >> 16) & LSQ_L3_PROTO_MASK);
  lsq_dir = (guint8)(cookie >> 24) & 0x3;


  switch (svc_cookie_id) {
  case 0x54:
    switch (pictype) {
    case JUNIPER_PIC_MLPPP:
      return JUNIPER_PROTO_PPP;
    case JUNIPER_PIC_MLFR:
      return JUNIPER_PROTO_ISO;
    default:
      return JUNIPER_PROTO_UNKNOWN;
    }
  case GSP_SVC_REQ_APOLLO:
  case GSP_SVC_REQ_LSQ:
    switch(lsq_proto) {
    case LSQ_L3_PROTO_IPV4:
      switch(pictype) {
      case JUNIPER_PIC_MLPPP:
        /* incoming traffic would have the direction bits set
         * -> this must be IS-IS over PPP
         */
        if ((flags & JUNIPER_FLAG_PKT_IN) == JUNIPER_FLAG_PKT_IN &&
            lsq_dir != (LSQ_COOKIE_RE|LSQ_COOKIE_DIR))
          return JUNIPER_PROTO_PPP;
        else
          return JUNIPER_PROTO_IP;
      case JUNIPER_PIC_MLFR:
        if (lsq_dir == (LSQ_COOKIE_RE|LSQ_COOKIE_DIR))
          return JUNIPER_PROTO_UNKNOWN;
        else
          return JUNIPER_PROTO_IP;
      default:
        return JUNIPER_PROTO_UNKNOWN;
      }
    case LSQ_L3_PROTO_IPV6:
      return JUNIPER_PROTO_IP6;
    case LSQ_L3_PROTO_MPLS:
      return JUNIPER_PROTO_MPLS;
    case LSQ_L3_PROTO_ISO:
      return JUNIPER_PROTO_ISO;
    default:
      return JUNIPER_PROTO_UNKNOWN;
    }
  default:
    return JUNIPER_PROTO_UNKNOWN;
  }
}


void
proto_register_juniper(void)
{
  static hf_register_info hf[] = {
    { &hf_juniper_magic,
      { "Magic Number", "juniper.magic-number", FT_UINT24, BASE_HEX,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_direction,
      { "Direction", "juniper.direction", FT_UINT8, BASE_HEX,
        VALS(juniper_direction_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_l2hdr_presence,
      { "L2 header presence", "juniper.l2hdr", FT_UINT8, BASE_HEX,
        VALS(juniper_l2hdr_presence_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_ext_total_len,
      { "Extension(s) Total length", "juniper.ext_total_len", FT_UINT16, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_cookie_len,
      { "Cookie length", "juniper.cookie_len", FT_UINT32, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_atm2_cookie,
      { "Cookie", "juniper.atm2.cookie", FT_UINT64, BASE_HEX,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_atm1_cookie,
      { "Cookie", "juniper.atm1.cookie", FT_UINT32, BASE_HEX,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_mlpic_cookie,
      { "Cookie", "juniper.mlpic.cookie", FT_UINT16, BASE_HEX,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_lspic_cookie,
      { "Cookie", "juniper.lspic.cookie", FT_UINT32, BASE_HEX,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_aspic_cookie,
      { "Cookie", "juniper.aspic.cookie", FT_UINT64, BASE_HEX,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_vlan,
      { "VLan ID", "juniper.vlan", FT_UINT16, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_proto,
      { "Protocol", "juniper.proto", FT_UINT16, BASE_DEC,
        VALS(juniper_proto_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_payload_type,
      { "Payload Type", "juniper.payload_type", FT_UINT16, BASE_DEC,
        VALS(juniper_proto_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_encap_type,
      { "Encapsulation Type", "juniper.encap_type", FT_UINT8, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_ext_ifd,
      /* Juniper PCAP extensions */
      { "Device Interface Index", "juniper.ext.ifd", FT_UINT32, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_ext_ifl,
      { "Logical Interface Index", "juniper.ext.ifl", FT_UINT32, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_ext_unit,
      { "Logical Unit Number", "juniper.ext.unit", FT_UINT32, BASE_DEC,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_ext_ifmt,
      { "Device Media Type", "juniper.ext.ifmt", FT_UINT16, BASE_DEC,
        VALS(juniper_ifmt_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_ext_ifle,
      { "Logical Interface Encapsulation", "juniper.ext.ifle", FT_UINT16, BASE_DEC,
        VALS(juniper_ifle_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_ext_ttp_ifmt,
      { "TTP derived Device Media Type", "juniper.ext.ttp_ifmt", FT_UINT16, BASE_DEC,
        VALS(juniper_ifmt_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_ext_ttp_ifle,
      { "TTP derived Logical Interface Encapsulation", "juniper.ext.ttp_ifle", FT_UINT16, BASE_DEC,
        VALS(juniper_ifle_vals), 0x0, NULL, HFILL }},
    { &hf_juniper_unknown_data,
      { "Unknown data", "juniper.unknown_data", FT_BYTES, BASE_NONE,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_vn_host_ip,
      { "Host IP", "juniper.vn.host_ip", FT_IPv4, BASE_NONE,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_vn_src,
      { "Src VN", "juniper.vn.src", FT_STRING, BASE_NONE,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_vn_dst,
      { "Dst VN", "juniper.vn.dst", FT_STRING, BASE_NONE,
        NULL, 0x0, NULL, HFILL }},
    { &hf_juniper_vn_flags,
      { "Flags", "juniper.vn.flags", FT_UINT32, BASE_HEX, NULL, VN_FLAG_MASK,
        NULL, HFILL }},
    { &hf_juniper_vn_flag_alert,
        { "Action Alert", "juniper.vn.flags.alert", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_ALERT, NULL, HFILL }},
    { &hf_juniper_vn_flag_drop,
        { "Action Drop", "juniper.vn.flags.drop", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_DROP, NULL, HFILL }},
    { &hf_juniper_vn_flag_deny,
        { "Action Deny", "juniper.vn.flags.deny", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_DENY, NULL, HFILL }},
    { &hf_juniper_vn_flag_log,
        { "Action Log", "juniper.vn.flags.log", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_LOG, NULL, HFILL }},
    { &hf_juniper_vn_flag_pass,
        { "Action Pass", "juniper.vn.flags.pass", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_PASS, NULL, HFILL }},
    { &hf_juniper_vn_flag_reject,
        { "Action Reject", "juniper.vn.flags.reject", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_REJECT, NULL, HFILL }},
    { &hf_juniper_vn_flag_mirror,
        { "Action Mirror", "juniper.vn.flags.mirror", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_MIRROR, NULL, HFILL }},
    { &hf_juniper_vn_flag_direction,
        { "Direction Ingress", "juniper.vn.flags.direction", FT_BOOLEAN, 32,
          TFS(&tfs_set_notset), VN_FLAG_DIRECTION, NULL, HFILL }},
  };

  static gint *ett[] = {
    &ett_juniper,
    &ett_juniper_vn_flags,
  };

  static ei_register_info ei[] = {
    { &ei_juniper_no_magic, { "juniper.magic-number.none", PI_PROTOCOL, PI_WARN, "No Magic-Number found!", EXPFILL }},
    { &ei_juniper_vn_incorrect_format, { "juniper.vn.incorrect_format", PI_PROTOCOL, PI_WARN, "Incorrect format", EXPFILL }},
  };

  expert_module_t* expert_juniper;

  proto_juniper = proto_register_protocol("Juniper", "Juniper", "juniper");
  proto_register_field_array(proto_juniper, hf, array_length(hf));
  proto_register_subtree_array(ett, array_length(ett));
  expert_juniper = expert_register_protocol(proto_juniper);
  expert_register_field_array(expert_juniper, ei, array_length(ei));

  payload_table = register_dissector_table("juniper.proto", "Juniper payload dissectors", proto_juniper, FT_UINT32, BASE_HEX, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);

}

void
proto_reg_handoff_juniper(void)
{
  dissector_handle_t juniper_atm1_handle;
  dissector_handle_t juniper_atm2_handle;
  dissector_handle_t juniper_pppoe_handle;
  dissector_handle_t juniper_mlppp_handle;
  dissector_handle_t juniper_mlfr_handle;
  dissector_handle_t juniper_ether_handle;
  dissector_handle_t juniper_ppp_handle;
  dissector_handle_t juniper_frelay_handle;
  dissector_handle_t juniper_chdlc_handle;
  dissector_handle_t juniper_ggsn_handle;
  dissector_handle_t juniper_vp_handle;
  dissector_handle_t juniper_svcs_handle;
  dissector_handle_t juniper_vn_handle;

  ipv4_handle   = find_dissector_add_dependency("ip", proto_juniper);

  juniper_atm2_handle   = create_dissector_handle(dissect_juniper_atm2,   proto_juniper);
  juniper_atm1_handle   = create_dissector_handle(dissect_juniper_atm1,   proto_juniper);
  juniper_pppoe_handle  = create_dissector_handle(dissect_juniper_pppoe,  proto_juniper);
  juniper_mlppp_handle  = create_dissector_handle(dissect_juniper_mlppp,  proto_juniper);
  juniper_mlfr_handle   = create_dissector_handle(dissect_juniper_mlfr,   proto_juniper);
  juniper_ether_handle  = create_dissector_handle(dissect_juniper_ether,  proto_juniper);
  juniper_ppp_handle    = create_dissector_handle(dissect_juniper_ppp,    proto_juniper);
  juniper_frelay_handle = create_dissector_handle(dissect_juniper_frelay, proto_juniper);
  juniper_chdlc_handle  = create_dissector_handle(dissect_juniper_chdlc,  proto_juniper);
  juniper_ggsn_handle   = create_dissector_handle(dissect_juniper_ggsn,   proto_juniper);
  juniper_vp_handle     = create_dissector_handle(dissect_juniper_vp,     proto_juniper);
  juniper_svcs_handle   = create_dissector_handle(dissect_juniper_svcs,   proto_juniper);
  juniper_vn_handle     = create_dissector_handle(dissect_juniper_vn,     proto_juniper);

  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_ATM2,   juniper_atm2_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_ATM1,   juniper_atm1_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_PPPOE,  juniper_pppoe_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_MLPPP,  juniper_mlppp_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_MLFR,   juniper_mlfr_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_ETHER,  juniper_ether_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_PPP,    juniper_ppp_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_FRELAY, juniper_frelay_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_CHDLC,  juniper_chdlc_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_GGSN,   juniper_ggsn_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_VP,     juniper_vp_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_SVCS,   juniper_svcs_handle);
  dissector_add_uint("wtap_encap", WTAP_ENCAP_JUNIPER_VN,     juniper_vn_handle);
}


/*
 * Editor modelines
 *
 * Local Variables:
 * c-basic-offset: 2
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * ex: set shiftwidth=2 tabstop=8 expandtab:
 * :indentSize=2:tabSize=8:noTabs=true:
 */