summaryrefslogtreecommitdiffstats
path: root/print-802_15_4.c
blob: fd75b159562205fc91f383c629cf37488e908aab (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
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
/*
 * Copyright (c) 2009
 *	Siemens AG, All rights reserved.
 *	Dmitry Eremin-Solenikov (dbaryshkov@gmail.com)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that: (1) source code distributions
 * retain the above copyright notice and this paragraph in its entirety, (2)
 * distributions including binary code include the above copyright notice and
 * this paragraph in its entirety in the documentation or other materials
 * provided with the distribution, and (3) all advertising materials mentioning
 * features or use of this software display the following acknowledgement:
 * ``This product includes software developed by the University of California,
 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
 * the University nor the names of its contributors may be used to endorse
 * or promote products derived from this software without specific prior
 * written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/* \summary: IEEE 802.15.4 printer */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "netdissect-stdinc.h"

#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "addrtoname.h"

#include "extract.h"

#define CHECK_BIT(num,bit) (((num) >> (bit)) & 0x1)

#define BROKEN_6TISCH_PAN_ID_COMPRESSION 0

/* Frame types from Table 7-1 of 802.15.4-2015 */
static const char *ftypes[] = {
	"Beacon",			/* 0 */
	"Data",				/* 1 */
	"ACK",				/* 2 */
	"Command",			/* 3 */
	"Reserved",			/* 4 */
	"Multipurpose",			/* 5 */
	"Fragment",			/* 6 */
	"Extended"			/* 7 */
};

/* Element IDs for Header IEs from Table 7-7 of 802.15.4-2015 */
static const char *h_ie_names[] = {
	"Vendor Specific Header IE",			/* 0x00 */
	"Reserved 0x01",				/* 0x01 */
	"Reserved 0x02",				/* 0x02 */
	"Reserved 0x03",				/* 0x03 */
	"Reserved 0x04",				/* 0x04 */
	"Reserved 0x05",				/* 0x05 */
	"Reserved 0x06",				/* 0x06 */
	"Reserved 0x07",				/* 0x07 */
	"Reserved 0x08",				/* 0x08 */
	"Reserved 0x09",				/* 0x09 */
	"Reserved 0x0a",				/* 0x0a */
	"Reserved 0x0b",				/* 0x0b */
	"Reserved 0x0c",				/* 0x0c */
	"Reserved 0x0d",				/* 0x0d */
	"Reserved 0x0e",				/* 0x0e */
	"Reserved 0x0f",				/* 0x0f */
	"Reserved 0x10",				/* 0x10 */
	"Reserved 0x11",				/* 0x11 */
	"Reserved 0x12",				/* 0x12 */
	"Reserved 0x13",				/* 0x13 */
	"Reserved 0x14",				/* 0x14 */
	"Reserved 0x15",				/* 0x15 */
	"Reserved 0x16",				/* 0x16 */
	"Reserved 0x17",				/* 0x17 */
	"Reserved 0x18",				/* 0x18 */
	"Reserved 0x19",				/* 0x19 */
	"LE CSL IE",					/* 0x1a */
	"LE RIT IE",					/* 0x1b */
	"DSME PAN descriptor IE",			/* 0x1c */
	"Rendezvous Time IE",				/* 0x1d */
	"Time Correction IE",				/* 0x1e */
	"Reserved 0x1f",				/* 0x1f */
	"Reserved 0x20",				/* 0x20 */
	"Extended DSME PAN descriptor IE",		/* 0x21 */
	"Fragment Sequence Context Description IE",	/* 0x22 */
	"Simplified Superframe Specification IE",	/* 0x23 */
	"Simplified GTS Specification IE",		/* 0x24 */
	"LECIM Capabilities IE",			/* 0x25 */
	"TRLE Descriptor IE",				/* 0x26 */
	"RCC Capabilities IE",				/* 0x27 */
	"RCCN Descriptor IE",				/* 0x28 */
	"Global Time IE",				/* 0x29 */
	"Omnibus Header IE",				/* 0x2a */
	"DA IE",					/* 0x2b */
	"Reserved 0x2c",				/* 0x2c */
	"Reserved 0x2d",				/* 0x2d */
	"Reserved 0x2e",				/* 0x2e */
	"Reserved 0x2f",				/* 0x2f */
	"Reserved 0x30",				/* 0x30 */
	"Reserved 0x31",				/* 0x31 */
	"Reserved 0x32",				/* 0x32 */
	"Reserved 0x33",				/* 0x33 */
	"Reserved 0x34",				/* 0x34 */
	"Reserved 0x35",				/* 0x35 */
	"Reserved 0x36",				/* 0x36 */
	"Reserved 0x37",				/* 0x37 */
	"Reserved 0x38",				/* 0x38 */
	"Reserved 0x39",				/* 0x39 */
	"Reserved 0x3a",				/* 0x3a */
	"Reserved 0x3b",				/* 0x3b */
	"Reserved 0x3c",				/* 0x3c */
	"Reserved 0x3d",				/* 0x3d */
	"Reserved 0x3e",				/* 0x3e */
	"Reserved 0x3f",				/* 0x3f */
	"Reserved 0x40",				/* 0x40 */
	"Reserved 0x41",				/* 0x41 */
	"Reserved 0x42",				/* 0x42 */
	"Reserved 0x43",				/* 0x43 */
	"Reserved 0x44",				/* 0x44 */
	"Reserved 0x45",				/* 0x45 */
	"Reserved 0x46",				/* 0x46 */
	"Reserved 0x47",				/* 0x47 */
	"Reserved 0x48",				/* 0x48 */
	"Reserved 0x49",				/* 0x49 */
	"Reserved 0x4a",				/* 0x4a */
	"Reserved 0x4b",				/* 0x4b */
	"Reserved 0x4c",				/* 0x4c */
	"Reserved 0x4d",				/* 0x4d */
	"Reserved 0x4e",				/* 0x4e */
	"Reserved 0x4f",				/* 0x4f */
	"Reserved 0x50",				/* 0x50 */
	"Reserved 0x51",				/* 0x51 */
	"Reserved 0x52",				/* 0x52 */
	"Reserved 0x53",				/* 0x53 */
	"Reserved 0x54",				/* 0x54 */
	"Reserved 0x55",				/* 0x55 */
	"Reserved 0x56",				/* 0x56 */
	"Reserved 0x57",				/* 0x57 */
	"Reserved 0x58",				/* 0x58 */
	"Reserved 0x59",				/* 0x59 */
	"Reserved 0x5a",				/* 0x5a */
	"Reserved 0x5b",				/* 0x5b */
	"Reserved 0x5c",				/* 0x5c */
	"Reserved 0x5d",				/* 0x5d */
	"Reserved 0x5e",				/* 0x5e */
	"Reserved 0x5f",				/* 0x5f */
	"Reserved 0x60",				/* 0x60 */
	"Reserved 0x61",				/* 0x61 */
	"Reserved 0x62",				/* 0x62 */
	"Reserved 0x63",				/* 0x63 */
	"Reserved 0x64",				/* 0x64 */
	"Reserved 0x65",				/* 0x65 */
	"Reserved 0x66",				/* 0x66 */
	"Reserved 0x67",				/* 0x67 */
	"Reserved 0x68",				/* 0x68 */
	"Reserved 0x69",				/* 0x69 */
	"Reserved 0x6a",				/* 0x6a */
	"Reserved 0x6b",				/* 0x6b */
	"Reserved 0x6c",				/* 0x6c */
	"Reserved 0x6d",				/* 0x6d */
	"Reserved 0x6e",				/* 0x6e */
	"Reserved 0x6f",				/* 0x6f */
	"Reserved 0x70",				/* 0x70 */
	"Reserved 0x71",				/* 0x71 */
	"Reserved 0x72",				/* 0x72 */
	"Reserved 0x73",				/* 0x73 */
	"Reserved 0x74",				/* 0x74 */
	"Reserved 0x75",				/* 0x75 */
	"Reserved 0x76",				/* 0x76 */
	"Reserved 0x77",				/* 0x77 */
	"Reserved 0x78",				/* 0x78 */
	"Reserved 0x79",				/* 0x79 */
	"Reserved 0x7a",				/* 0x7a */
	"Reserved 0x7b",				/* 0x7b */
	"Reserved 0x7c",				/* 0x7c */
	"Reserved 0x7d",				/* 0x7d */
	"Header Termination 1 IE",			/* 0x7e */
	"Header Termination 2 IE"			/* 0x7f */
};

/* Payload IE Group IDs from Table 7-15 of 802.15.4-2015 */
static const char *p_ie_names[] = {
	"ESDU IE",			/* 0x00 */
	"MLME IE",			/* 0x01 */
	"Vendor Specific Nested IE",	/* 0x02 */
	"Multiplexed IE (802.15.9)",	/* 0x03 */
	"Omnibus Payload Group IE",	/* 0x04 */
	"IETF IE",			/* 0x05 */
	"Reserved 0x06",		/* 0x06 */
	"Reserved 0x07",		/* 0x07 */
	"Reserved 0x08",		/* 0x08 */
	"Reserved 0x09",		/* 0x09 */
	"Reserved 0x0a",		/* 0x0a */
	"Reserved 0x0b",		/* 0x0b */
	"Reserved 0x0c",		/* 0x0c */
	"Reserved 0x0d",		/* 0x0d */
	"Reserved 0x0e",		/* 0x0e */
	"List termination"		/* 0x0f */
};

/* Sub-ID for short format from Table 7-16 of 802.15.4-2015 */
static const char *p_mlme_short_names[] = {
	"Reserved for long format 0x0",			/* 0x00 */
	"Reserved for long format 0x1",			/* 0x01 */
	"Reserved for long format 0x2",			/* 0x02 */
	"Reserved for long format 0x3",			/* 0x03 */
	"Reserved for long format 0x4",			/* 0x04 */
	"Reserved for long format 0x5",			/* 0x05 */
	"Reserved for long format 0x6",			/* 0x06 */
	"Reserved for long format 0x7",			/* 0x07 */
	"Reserved for long format 0x8",			/* 0x08 */
	"Reserved for long format 0x9",			/* 0x09 */
	"Reserved for long format 0xa",			/* 0x0a */
	"Reserved for long format 0xb",			/* 0x0b */
	"Reserved for long format 0xc",			/* 0x0c */
	"Reserved for long format 0xd",			/* 0x0d */
	"Reserved for long format 0xe",			/* 0x0e */
	"Reserved for long format 0xf",			/* 0x0f */
	"Reserved 0x10",				/* 0x10 */
	"Reserved 0x11",				/* 0x11 */
	"Reserved 0x12",				/* 0x12 */
	"Reserved 0x13",				/* 0x13 */
	"Reserved 0x14",				/* 0x14 */
	"Reserved 0x15",				/* 0x15 */
	"Reserved 0x16",				/* 0x16 */
	"Reserved 0x17",				/* 0x17 */
	"Reserved 0x18",				/* 0x18 */
	"Reserved 0x19",				/* 0x19 */
	"TSCH Synchronization IE",			/* 0x1a */
	"TSCH Slotframe and Link IE",			/* 0x1b */
	"TSCH Timeslot IE",				/* 0x1c */
	"Hopping timing IE",				/* 0x1d */
	"Enhanced Beacon Filter IE",			/* 0x1e */
	"MAC Metrics IE",				/* 0x1f */
	"All MAC Metrics IE",				/* 0x20 */
	"Coexistence Specification IE",			/* 0x21 */
	"SUN Device Capabilities IE",			/* 0x22 */
	"SUN FSK Generic PHY IE",			/* 0x23 */
	"Mode Switch Parameter IE",			/* 0x24 */
	"PHY Parameter Change IE",			/* 0x25 */
	"O-QPSK PHY Mode IE",				/* 0x26 */
	"PCA Allocation IE",				/* 0x27 */
	"LECIM DSSS Operating Mode IE",			/* 0x28 */
	"LECIM FSK Operating Mode IE",			/* 0x29 */
	"Reserved 0x2a",				/* 0x2a */
	"TVWS PHY Operating Mode Description IE",	/* 0x2b */
	"TVWS Device Capabilities IE",			/* 0x2c */
	"TVWS Device Category IE",			/* 0x2d */
	"TVWS Device Identiication IE",			/* 0x2e */
	"TVWS Device Location IE",			/* 0x2f */
	"TVWS Channel Information Query IE",		/* 0x30 */
	"TVWS Channel Information Source IE",		/* 0x31 */
	"CTM IE",					/* 0x32 */
	"Timestamp IE",					/* 0x33 */
	"Timestamp Difference IE",			/* 0x34 */
	"TMCTP Specification IE",			/* 0x35 */
	"RCC PHY Operating Mode IE",			/* 0x36 */
	"Reserved 0x37",				/* 0x37 */
	"Reserved 0x38",				/* 0x38 */
	"Reserved 0x39",				/* 0x39 */
	"Reserved 0x3a",				/* 0x3a */
	"Reserved 0x3b",				/* 0x3b */
	"Reserved 0x3c",				/* 0x3c */
	"Reserved 0x3d",				/* 0x3d */
	"Reserved 0x3e",				/* 0x3e */
	"Reserved 0x3f",				/* 0x3f */
	"Reserved 0x40",				/* 0x40 */
	"Reserved 0x41",				/* 0x41 */
	"Reserved 0x42",				/* 0x42 */
	"Reserved 0x43",				/* 0x43 */
	"Reserved 0x44",				/* 0x44 */
	"Reserved 0x45",				/* 0x45 */
	"Reserved 0x46",				/* 0x46 */
	"Reserved 0x47",				/* 0x47 */
	"Reserved 0x48",				/* 0x48 */
	"Reserved 0x49",				/* 0x49 */
	"Reserved 0x4a",				/* 0x4a */
	"Reserved 0x4b",				/* 0x4b */
	"Reserved 0x4c",				/* 0x4c */
	"Reserved 0x4d",				/* 0x4d */
	"Reserved 0x4e",				/* 0x4e */
	"Reserved 0x4f",				/* 0x4f */
	"Reserved 0x50",				/* 0x50 */
	"Reserved 0x51",				/* 0x51 */
	"Reserved 0x52",				/* 0x52 */
	"Reserved 0x53",				/* 0x53 */
	"Reserved 0x54",				/* 0x54 */
	"Reserved 0x55",				/* 0x55 */
	"Reserved 0x56",				/* 0x56 */
	"Reserved 0x57",				/* 0x57 */
	"Reserved 0x58",				/* 0x58 */
	"Reserved 0x59",				/* 0x59 */
	"Reserved 0x5a",				/* 0x5a */
	"Reserved 0x5b",				/* 0x5b */
	"Reserved 0x5c",				/* 0x5c */
	"Reserved 0x5d",				/* 0x5d */
	"Reserved 0x5e",				/* 0x5e */
	"Reserved 0x5f",				/* 0x5f */
	"Reserved 0x60",				/* 0x60 */
	"Reserved 0x61",				/* 0x61 */
	"Reserved 0x62",				/* 0x62 */
	"Reserved 0x63",				/* 0x63 */
	"Reserved 0x64",				/* 0x64 */
	"Reserved 0x65",				/* 0x65 */
	"Reserved 0x66",				/* 0x66 */
	"Reserved 0x67",				/* 0x67 */
	"Reserved 0x68",				/* 0x68 */
	"Reserved 0x69",				/* 0x69 */
	"Reserved 0x6a",				/* 0x6a */
	"Reserved 0x6b",				/* 0x6b */
	"Reserved 0x6c",				/* 0x6c */
	"Reserved 0x6d",				/* 0x6d */
	"Reserved 0x6e",				/* 0x6e */
	"Reserved 0x6f",				/* 0x6f */
	"Reserved 0x70",				/* 0x70 */
	"Reserved 0x71",				/* 0x71 */
	"Reserved 0x72",				/* 0x72 */
	"Reserved 0x73",				/* 0x73 */
	"Reserved 0x74",				/* 0x74 */
	"Reserved 0x75",				/* 0x75 */
	"Reserved 0x76",				/* 0x76 */
	"Reserved 0x77",				/* 0x77 */
	"Reserved 0x78",				/* 0x78 */
	"Reserved 0x79",				/* 0x79 */
	"Reserved 0x7a",				/* 0x7a */
	"Reserved 0x7b",				/* 0x7b */
	"Reserved 0x7c",				/* 0x7c */
	"Reserved 0x7d",				/* 0x7d */
	"Reserved 0x7e",				/* 0x7e */
	"Reserved 0x7f"					/* 0x7f */
};

/* Sub-ID for long format from Table 7-17 of 802.15.4-2015 */
static const char *p_mlme_long_names[] = {
	"Reserved 0x00",			/* 0x00 */
	"Reserved 0x01",			/* 0x01 */
	"Reserved 0x02",			/* 0x02 */
	"Reserved 0x03",			/* 0x03 */
	"Reserved 0x04",			/* 0x04 */
	"Reserved 0x05",			/* 0x05 */
	"Reserved 0x06",			/* 0x06 */
	"Reserved 0x07",			/* 0x07 */
	"Vendor Specific MLME Nested IE",	/* 0x08 */
	"Channel Hopping IE",			/* 0x09 */
	"Reserved 0x0a",			/* 0x0a */
	"Reserved 0x0b",			/* 0x0b */
	"Reserved 0x0c",			/* 0x0c */
	"Reserved 0x0d",			/* 0x0d */
	"Reserved 0x0e",			/* 0x0e */
	"Reserved 0x0f"				/* 0x0f */
};

/* MAC commands from Table 7-49 of 802.15.4-2015 */
static const char *mac_c_names[] = {
	"Reserved 0x00",				/* 0x00 */
	"Association Request command",			/* 0x01 */
	"Association Response command",			/* 0x02 */
	"Disassociation Notification command",		/* 0x03 */
	"Data Request command",				/* 0x04 */
	"PAN ID Conflict Notification command",		/* 0x05 */
	"Orphan Notification command",			/* 0x06 */
	"Beacon Request command",			/* 0x07 */
	"Coordinator realignment command",		/* 0x08 */
	"GTS request command",				/* 0x09 */
	"TRLE Management Request command",		/* 0x0a */
	"TRLE Management Response command",		/* 0x0b */
	"Reserved 0x0c",				/* 0x0c */
	"Reserved 0x0d",				/* 0x0d */
	"Reserved 0x0e",				/* 0x0e */
	"Reserved 0x0f",				/* 0x0f */
	"Reserved 0x10",				/* 0x10 */
	"Reserved 0x11",				/* 0x11 */
	"Reserved 0x12",				/* 0x12 */
	"DSME Association Request command",		/* 0x13 */
	"DSME Association Response command",		/* 0x14 */
	"DSME GTS Request command",			/* 0x15 */
	"DSME GTS Response command",			/* 0x16 */
	"DSME GTS Notify command",			/* 0x17 */
	"DSME Information Request command",		/* 0x18 */
	"DSME Information Response command",		/* 0x19 */
	"DSME Beacon Allocation Notification command",	/* 0x1a */
	"DSME Beacon Collision Notification command",	/* 0x1b */
	"DSME Link Report command",			/* 0x1c */
	"Reserved 0x1d",				/* 0x1d */
	"Reserved 0x1e",				/* 0x1e */
	"Reserved 0x1f",				/* 0x1f */
	"RIT Data Request command",			/* 0x20 */
	"DBS Request command",				/* 0x21 */
	"DBS Response command",				/* 0x22 */
	"RIT Data Response command",			/* 0x23 */
	"Vendor Specific command",			/* 0x24 */
	"Reserved 0x25",				/* 0x25 */
	"Reserved 0x26",				/* 0x26 */
	"Reserved 0x27",				/* 0x27 */
	"Reserved 0x28",				/* 0x28 */
	"Reserved 0x29",				/* 0x29 */
	"Reserved 0x2a",				/* 0x2a */
	"Reserved 0x2b",				/* 0x2b */
	"Reserved 0x2c",				/* 0x2c */
	"Reserved 0x2d",				/* 0x2d */
	"Reserved 0x2e",				/* 0x2e */
	"Reserved 0x2f"					/* 0x2f */
};

/*
 * Frame Control subfields.
 */
#define FC_FRAME_TYPE(fc)              ((fc) & 0x7)
#define FC_FRAME_VERSION(fc)           (((fc) >> 12) & 0x3)

#define FC_ADDRESSING_MODE_NONE         0x00
#define FC_ADDRESSING_MODE_RESERVED     0x01
#define FC_ADDRESSING_MODE_SHORT        0x02
#define FC_ADDRESSING_MODE_LONG         0x03

/*
 * IEEE 802.15.4 CRC 16 function. This is using CCITT polynomical of 0x1021,
 * but the initial value is 0, and the bits are reversed for both in and out.
 * See section 7.2.10 of 802.15.4-2015 for more information.
 */
static uint16_t
ieee802_15_4_crc16(netdissect_options *ndo, const u_char *p,
		   u_int data_len)
{
	uint16_t crc;
	u_char x, y;

	crc = 0x0000; /* Note, initial value is 0x0000 not 0xffff. */

	while (data_len != 0){
		y = GET_U_1(p);
		p++;
		/* Reverse bits on input */
		y = (((y & 0xaa) >> 1) | ((y & 0x55) << 1));
		y = (((y & 0xcc) >> 2) | ((y & 0x33) << 2));
		y = (((y & 0xf0) >> 4) | ((y & 0x0f) << 4));
		/* Update CRC */
		x = crc >> 8 ^ y;
		x ^= x >> 4;
		crc = ((uint16_t)(crc << 8)) ^
			((uint16_t)(x << 12)) ^
			((uint16_t)(x << 5)) ^
			((uint16_t)x);
		data_len--;
	}
	/* Reverse bits on output */
	crc = (((crc & 0xaaaa) >> 1) | ((crc & 0x5555) << 1));
	crc = (((crc & 0xcccc) >> 2) | ((crc & 0x3333) << 2));
	crc = (((crc & 0xf0f0) >> 4) | ((crc & 0x0f0f) << 4));
	crc = (((crc & 0xff00) >> 8) | ((crc & 0x00ff) << 8));
	return crc;
}

/*
 * Reverses the bits of the 32-bit word.
 */
static uint32_t
ieee802_15_4_reverse32(uint32_t x)
{
	x = ((x & 0x55555555) <<  1) | ((x >>  1) & 0x55555555);
	x = ((x & 0x33333333) <<  2) | ((x >>  2) & 0x33333333);
	x = ((x & 0x0F0F0F0F) <<  4) | ((x >>  4) & 0x0F0F0F0F);
	x = (x << 24) | ((x & 0xFF00) << 8) |
		((x >> 8) & 0xFF00) | (x >> 24);
	return x;
}

/*
 * IEEE 802.15.4 CRC 32 function. This is using ANSI X3.66-1979 polynomical of
 * 0x04C11DB7, but the initial value is 0, and the bits are reversed for both
 * in and out. See section 7.2.10 of 802.15.4-2015 for more information.
 */
static uint32_t
ieee802_15_4_crc32(netdissect_options *ndo, const u_char *p,
		   u_int data_len)
{
	uint32_t crc, byte;
	int b;

	crc = 0x00000000; /* Note, initial value is 0x00000000 not 0xffffffff */

	while (data_len != 0){
		byte = GET_U_1(p);
		p++;
		/* Reverse bits on input */
		byte = ieee802_15_4_reverse32(byte);
		/* Update CRC */
		for(b = 0; b <= 7; b++) {
		  if ((int) (crc ^ byte) < 0)
		    crc = (crc << 1) ^ 0x04C11DB7;
		  else
		    crc = crc << 1;
		  byte = byte << 1;
		}
		data_len--;
	}
	/* Reverse bits on output */
	crc = ieee802_15_4_reverse32(crc);
	return crc;
}

/*
 * Find out the address length based on the address type. See table 7-3 of
 * 802.15.4-2015. Returns the address length.
 */
static int
ieee802_15_4_addr_len(uint16_t addr_type)
{
	switch (addr_type) {
	case FC_ADDRESSING_MODE_NONE: /* None. */
		return 0;
		break;
	case FC_ADDRESSING_MODE_RESERVED: /* Reserved, there used to be 8-bit
					   * address type in one amendment, but
					   * that and the feature using it was
					   * removed during 802.15.4-2015
					   * maintenance process. */
		return -1;
		break;
	case FC_ADDRESSING_MODE_SHORT: /* Short. */
		return 2;
		break;
	case FC_ADDRESSING_MODE_LONG: /* Extended. */
		return 8;
		break;
	}
	return 0;
}

/*
 * Print out the ieee 802.15.4 address.
 */
static void
ieee802_15_4_print_addr(netdissect_options *ndo, const u_char *p,
			int dst_addr_len)
{
	switch (dst_addr_len) {
	case 0:
		ND_PRINT("none");
		break;
	case 2:
		ND_PRINT("%04x", GET_LE_U_2(p));
		break;
	case 8:
		ND_PRINT("%s", GET_LE64ADDR_STRING(p));
		break;
	}
}

/*
 * Beacon frame superframe specification structure. Used in the old Beacon
 * frames, and in the DSME PAN Descriptor IE. See section 7.3.1.3 of the
 * 802.15.4-2015.
 */
static void
ieee802_15_4_print_superframe_specification(netdissect_options *ndo,
					    uint16_t ss)
{
	if (ndo->ndo_vflag < 1) {
		return;
	}
	ND_PRINT("\n\tBeacon order = %d, Superframe order = %d, ",
		 (ss & 0xf), ((ss >> 4) & 0xf));
	ND_PRINT("Final CAP Slot = %d",
		 ((ss >> 8) & 0xf));
	if (CHECK_BIT(ss, 12)) { ND_PRINT(", BLE enabled"); }
	if (CHECK_BIT(ss, 14)) { ND_PRINT(", PAN Coordinator"); }
	if (CHECK_BIT(ss, 15)) { ND_PRINT(", Association Permit"); }
}

/*
 * Beacon frame gts info structure. Used in the old Beacon frames, and
 * in the DSME PAN Descriptor IE. See section 7.3.1.4 of 802.15.4-2015.
 *
 * Returns number of byts consumed from the packet or -1 in case of error.
 */
static int
ieee802_15_4_print_gts_info(netdissect_options *ndo,
			    const u_char *p,
			    u_int data_len)
{
	uint8_t gts_spec, gts_cnt;
	u_int len;
	int i;

	gts_spec = GET_U_1(p);
	gts_cnt = gts_spec & 0x7;

	if (gts_cnt == 0) {
		if (ndo->ndo_vflag > 0) {
			ND_PRINT("\n\tGTS Descriptor Count = %d, ", gts_cnt);
		}
		return 1;
	}
	len = 1 + 1 + gts_cnt * 3;

	if (data_len < len) {
		ND_PRINT(" [ERROR: Truncated GTS Info List]");
		return -1;
	}
	if (ndo->ndo_vflag < 2) {
		return len;
	}
	ND_PRINT("GTS Descriptor Count = %d, ", gts_cnt);
	ND_PRINT("GTS Directions Mask = %02x, [ ",
		 GET_U_1(p + 1) & 0x7f);

	for(i = 0; i < gts_cnt; i++) {
		ND_PRINT("[ ");
		ieee802_15_4_print_addr(ndo, p + 2 + i * 3, 2);
		ND_PRINT(", Start slot = %d, Length = %d ] ",
			 GET_U_1(p + 2 + i * 3 + 1) & 0x0f,
			 (GET_U_1(p + 2 + i * 3 + 1) >> 4) & 0x0f);
	}
	ND_PRINT("]");
	return len;
}

/*
 * Beacon frame pending address structure. Used in the old Beacon frames, and
 * in the DSME PAN Descriptor IE. See section 7.3.1.5 of 802.15.4-2015.
 *
 * Returns number of byts consumed from the packet or -1 in case of error.
 */
static int16_t
ieee802_15_4_print_pending_addresses(netdissect_options *ndo,
				     const u_char *p,
				     u_int data_len)
{
	uint8_t pas, s_cnt, e_cnt, len, i;

	pas = GET_U_1(p);
	s_cnt = pas & 0x7;
	e_cnt = (pas >> 4) & 0x7;
	len = 1 + s_cnt * 2 + e_cnt * 8;
	if (ndo->ndo_vflag > 0) {
		ND_PRINT("\n\tPending address list, "
			 "# short addresses = %d, # extended addresses = %d",
			 s_cnt, e_cnt);
	}
	if (data_len < len) {
		ND_PRINT(" [ERROR: Pending address list truncated]");
		return -1;
	}
	if (ndo->ndo_vflag < 2) {
		return len;
	}
	if (s_cnt != 0) {
		ND_PRINT(", Short address list = [ ");
		for(i = 0; i < s_cnt; i++) {
			ieee802_15_4_print_addr(ndo, p + 1 + i * 2, 2);
			ND_PRINT(" ");
		}
		ND_PRINT("]");
	}
	if (e_cnt != 0) {
		ND_PRINT(", Extended address list = [ ");
		for(i = 0; i < e_cnt; i++) {
			ieee802_15_4_print_addr(ndo, p + 1 + s_cnt * 2 +
						i * 8, 8);
			ND_PRINT(" ");
		}
		ND_PRINT("]");
	}
	return len;
}

/*
 * Print header ie content.
 */
static void
ieee802_15_4_print_header_ie(netdissect_options *ndo,
			     const u_char *p,
			     uint16_t ie_len,
			     int element_id)
{
	int i;

	switch (element_id) {
	case 0x00: /* Vendor Specific Header IE */
		if (ie_len < 3) {
			ND_PRINT("[ERROR: Vendor OUI missing]");
		} else {
			ND_PRINT("OUI = 0x%02x%02x%02x, ", GET_U_1(p),
				 GET_U_1(p + 1), GET_U_1(p + 2));
			ND_PRINT("Data = ");
			for(i = 3; i < ie_len; i++) {
				ND_PRINT("%02x ", GET_U_1(p + i));
			}
		}
		break;
	case 0x1a: /* LE CSL IE */
		if (ie_len < 4) {
			ND_PRINT("[ERROR: Truncated CSL IE]");
		} else {
			ND_PRINT("CSL Phase = %d, CSL Period = %d",
				 GET_LE_U_2(p), GET_LE_U_2(p + 2));
			if (ie_len >= 6) {
				ND_PRINT(", Rendezvous time = %d",
					 GET_LE_U_2(p + 4));
			}
			if (ie_len != 4 && ie_len != 6) {
				ND_PRINT(" [ERROR: CSL IE length wrong]");
			}
		}
		break;
	case 0x1b: /* LE RIT IE */
		if (ie_len < 4) {
			ND_PRINT("[ERROR: Truncated RIT IE]");
		} else {
			ND_PRINT("Time to First Listen = %d, # of Repeat Listen = %d, Repeat Listen Interval = %d",
				 GET_U_1(p),
				 GET_U_1(p + 1),
				 GET_LE_U_2(p + 2));
		}
		break;
	case 0x1c: /* DSME PAN Descriptor IE */
		/*FALLTHROUGH*/
	case 0x21: /* Extended DSME PAN descriptor IE */
		if (ie_len < 2) {
			ND_PRINT("[ERROR: Truncated DSME PAN IE]");
		} else {
			uint16_t ss, ptr, ulen;
			int16_t len;
			int hopping_present;

			hopping_present = 0;

			ss = GET_LE_U_2(p);
			ieee802_15_4_print_superframe_specification(ndo, ss);
			if (ie_len < 3) {
				ND_PRINT("[ERROR: Truncated before pending addresses field]");
				break;
			}
			ptr = 2;
			len = ieee802_15_4_print_pending_addresses(ndo,
								   p + ptr,
								   ie_len -
								   ptr);
			if (len < 0) {
				break;
			}
			ptr += len;

			if (element_id == 0x21) {
				/* Extended version. */
				if (ie_len < ptr + 2) {
					ND_PRINT("[ERROR: Truncated before DSME Superframe Specification]");
					break;
				}
				ss = GET_LE_U_2(p + ptr);
				ptr += 2;
				ND_PRINT("Multi-superframe Order = %d", ss & 0xff);
				ND_PRINT(", %s", ((ss & 0x100) ?
						  "Channel hopping mode" :
						  "Channel adaptation mode"));
				if (ss & 0x400) {
					ND_PRINT(", CAP reduction enabled");
				}
				if (ss & 0x800) {
					ND_PRINT(", Deferred beacon enabled");
				}
				if (ss & 0x1000) {
					ND_PRINT(", Hopping Sequence Present");
					hopping_present = 1;
				}
			} else {
				if (ie_len < ptr + 1) {
					ND_PRINT("[ERROR: Truncated before DSME Superframe Specification]");
					break;
				}
				ss = GET_U_1(p + ptr);
				ptr++;
				ND_PRINT("Multi-superframe Order = %d",
					 ss & 0x0f);
				ND_PRINT(", %s", ((ss & 0x10) ?
						  "Channel hopping mode" :
						  "Channel adaptation mode"));
				if (ss & 0x40) {
					ND_PRINT(", CAP reduction enabled");
				}
				if (ss & 0x80) {
					ND_PRINT(", Deferred beacon enabled");
				}
			}
			if (ie_len < ptr + 8) {
				ND_PRINT(" [ERROR: Truncated before Time synchronization specification]");
				break;
			}
			ND_PRINT("Beacon timestamp = %" PRIu64 ", offset = %d",
				 GET_LE_U_6(p + ptr),
				 GET_LE_U_2(p + ptr + 6));
			ptr += 8;
			if (ie_len < ptr + 4) {
				ND_PRINT(" [ERROR: Truncated before Beacon Bitmap]");
				break;
			}

			ulen = GET_LE_U_2(p + ptr + 2);
			ND_PRINT("SD Index = %d, Bitmap len = %d, ",
				 GET_LE_U_2(p + ptr), ulen);
			ptr += 4;
			if (ie_len < ptr + ulen) {
				ND_PRINT(" [ERROR: Truncated in SD bitmap]");
				break;
			}
			ND_PRINT(" SD Bitmap = ");
			for(i = 0; i < ulen; i++) {
				ND_PRINT("%02x ", GET_U_1(p + ptr + i));
			}
			ptr += ulen;

			if (ie_len < ptr + 5) {
				ND_PRINT(" [ERROR: Truncated before Channel hopping specification]");
				break;
			}

			ulen = GET_LE_U_2(p + ptr + 4);
			ND_PRINT("Hopping Seq ID = %d, PAN Coordinator BSN = %d, "
				 "Channel offset = %d, Bitmap length = %d, ",
				 GET_U_1(p + ptr),
				 GET_U_1(p + ptr + 1),
				 GET_LE_U_2(p + ptr + 2),
				 ulen);
			ptr += 5;
			if (ie_len < ptr + ulen) {
				ND_PRINT(" [ERROR: Truncated in Channel offset bitmap]");
				break;
			}
			ND_PRINT(" Channel offset bitmap = ");
			for(i = 0; i < ulen; i++) {
				ND_PRINT("%02x ", GET_U_1(p + ptr + i));
			}
			ptr += ulen;
			if (hopping_present) {
				if (ie_len < ptr + 1) {
					ND_PRINT(" [ERROR: Truncated in Hopping Sequence length]");
					break;
				}
				ulen = GET_U_1(p + ptr);
				ptr++;
				ND_PRINT("Hopping Seq length = %d [ ", ulen);

				/* The specification is not clear how the
				   hopping sequence is encoded, I assume two
				   octet unsigned integers for each channel. */

				if (ie_len < ptr + ulen * 2) {
					ND_PRINT(" [ERROR: Truncated in Channel offset bitmap]");
					break;
				}
				for(i = 0; i < ulen; i++) {
					ND_PRINT("%02x ",
						 GET_LE_U_2(p + ptr + i * 2));
				}
				ND_PRINT("]");
				ptr += ulen * 2;
			}
		}
		break;
	case 0x1d: /* Rendezvous Tome IE */
		if (ie_len != 4) {
			ND_PRINT("[ERROR: Length != 2]");
		} else {
			uint16_t r_time, w_u_interval;
			r_time = GET_LE_U_2(p);
			w_u_interval = GET_LE_U_2(p + 2);

			ND_PRINT("Rendezvous time = %d, Wake-up Interval = %d",
				 r_time, w_u_interval);
		}
		break;
	case 0x1e: /* Time correction IE */
		if (ie_len != 2) {
			ND_PRINT("[ERROR: Length != 2]");
		} else {
			uint16_t val;
			int16_t timecorr;

			val = GET_LE_U_2(p);
			if (val & 0x8000) { ND_PRINT("Negative "); }
			val &= 0xfff;
			val <<= 4;
			timecorr = val;
			timecorr >>= 4;

			ND_PRINT("Ack time correction = %d, ", timecorr);
		}
		break;
	case 0x22: /* Fragment Sequence Content Description IE */
		/* XXX Not implemented */
	case 0x23: /* Simplified Superframe Specification IE */
		/* XXX Not implemented */
	case 0x24: /* Simplified GTS Specification IE */
		/* XXX Not implemented */
	case 0x25: /* LECIM Capabilities IE */
		/* XXX Not implemented */
	case 0x26: /* TRLE Descriptor IE */
		/* XXX Not implemented */
	case 0x27: /* RCC Capabilities IE */
		/* XXX Not implemented */
	case 0x28: /* RCCN Descriptor IE */
		/* XXX Not implemented */
	case 0x29: /* Global Time IE */
		/* XXX Not implemented */
	case 0x2b: /* DA IE */
		/* XXX Not implemented */
	default:
		ND_PRINT("IE Data = ");
		for(i = 0; i < ie_len; i++) {
			ND_PRINT("%02x ", GET_U_1(p + i));
		}
		break;
	}
}

/*
 * Parse and print Header IE list. See 7.4.2 of 802.15.4-2015 for
 * more information.
 *
 * Returns number of byts consumed from the packet or -1 in case of error.
 */
static int
ieee802_15_4_print_header_ie_list(netdissect_options *ndo,
				  const u_char *p,
				  u_int caplen,
				  int *payload_ie_present)
{
	int len, ie, element_id, i;
	uint16_t ie_len;

	*payload_ie_present = 0;
	len = 0;
	do {
		if (caplen < 2) {
			ND_PRINT("[ERROR: Truncated header IE]");
			return -1;
		}
		/* Extract IE Header */
		ie = GET_LE_U_2(p);
		if (CHECK_BIT(ie, 15)) {
			ND_PRINT("[ERROR: Header IE with type 1] ");
		}
		/* Get length and Element ID */
		ie_len = ie & 0x7f;
		element_id = (ie >> 7) & 0xff;
		if (element_id > 127) {
			ND_PRINT("Reserved Element ID %02x, length = %d ",
				 element_id, ie_len);
		} else {
			if (ie_len == 0) {
				ND_PRINT("\n\t%s [", h_ie_names[element_id]);
			} else {
				ND_PRINT("\n\t%s [ length = %d, ",
					 h_ie_names[element_id], ie_len);
			}
		}
		if (caplen < 2U + ie_len) {
			ND_PRINT("[ERROR: Truncated IE data]");
			return -1;
		}
		/* Skip header */
		p += 2;

		/* Parse and print content. */
		if (ndo->ndo_vflag > 3 && ie_len != 0) {
			ieee802_15_4_print_header_ie(ndo, p,
						     ie_len, element_id);
		} else {
			if (ie_len != 0) {
				ND_PRINT("IE Data = ");
				for(i = 0; i < ie_len; i++) {
					ND_PRINT("%02x ", GET_U_1(p + i));
				}
			}
		}
		ND_PRINT("] ");
		len += 2 + ie_len;
		p += ie_len;
		caplen -= 2 + ie_len;
		if (element_id == 0x7e) {
			*payload_ie_present = 1;
			break;
		}
		if (element_id == 0x7f) {
			break;
		}
	} while (caplen != 0);
	return len;
}

/*
 * Print MLME ie content.
 */
static void
ieee802_15_4_print_mlme_ie(netdissect_options *ndo,
			   const u_char *p,
			   uint16_t sub_ie_len,
			   int sub_id)
{
	int i, j;
	uint16_t len;

	/* Note, as there is no overlap with the long and short
	   MLME sub IDs, we can just use one switch here. */
	switch (sub_id) {
	case 0x08: /* Vendor Specific Nested IE */
		if (sub_ie_len < 3) {
			ND_PRINT("[ERROR: Vendor OUI missing]");
		} else {
			ND_PRINT("OUI = 0x%02x%02x%02x, ",
				 GET_U_1(p),
				 GET_U_1(p + 1),
				 GET_U_1(p + 2));
			ND_PRINT("Data = ");
			for(i = 3; i < sub_ie_len; i++) {
				ND_PRINT("%02x ", GET_U_1(p + i));
			}
		}
		break;
	case 0x09: /* Channel Hopping IE */
		if (sub_ie_len < 1) {
			ND_PRINT("[ERROR: Hopping sequence ID missing]");
		} else if (sub_ie_len == 1) {
			ND_PRINT("Hopping Sequence ID = %d", GET_U_1(p));
			p++;
			sub_ie_len--;
		} else {
			uint16_t channel_page, number_of_channels;

			ND_PRINT("Hopping Sequence ID = %d", GET_U_1(p));
			p++;
			sub_ie_len--;
			if (sub_ie_len < 7) {
				ND_PRINT("[ERROR: IE truncated]");
				break;
			}
			channel_page = GET_U_1(p);
			number_of_channels = GET_LE_U_2(p + 1);
			ND_PRINT("Channel Page = %d, Number of Channels = %d, ",
				 channel_page, number_of_channels);
			ND_PRINT("Phy Configuration = 0x%08x, ",
				 GET_LE_U_4(p + 3));
			p += 7;
			sub_ie_len -= 7;
			if (channel_page == 9 || channel_page == 10) {
				len = (number_of_channels + 7) / 8;
				if (sub_ie_len < len) {
					ND_PRINT("[ERROR: IE truncated]");
					break;
				}
				ND_PRINT("Extended bitmap = 0x");
				for(i = 0; i < len; i++) {
					ND_PRINT("%02x", GET_U_1(p + i));
				}
				ND_PRINT(", ");
				p += len;
				sub_ie_len -= len;
			}
			if (sub_ie_len < 2) {
				ND_PRINT("[ERROR: IE truncated]");
				break;
			}
			len = GET_LE_U_2(p);
			p += 2;
			sub_ie_len -= 2;
			ND_PRINT("Hopping Seq length = %d [ ", len);

			if (sub_ie_len < len * 2) {
				ND_PRINT(" [ERROR: IE truncated]");
				break;
			}
			for(i = 0; i < len; i++) {
				ND_PRINT("%02x ", GET_LE_U_2(p + i * 2));
			}
			ND_PRINT("]");
			p += len * 2;
			sub_ie_len -= len * 2;
			if (sub_ie_len < 2) {
				ND_PRINT("[ERROR: IE truncated]");
				break;
			}
			ND_PRINT("Current hop = %d", GET_LE_U_2(p));
		}

		break;
	case 0x1a: /* TSCH Synchronization IE. */
		if (sub_ie_len < 6) {
			ND_PRINT("[ERROR: Length != 6]");
		}
		ND_PRINT("ASN = %010" PRIx64 ", Join Metric = %d ",
			 GET_LE_U_5(p), GET_U_1(p + 5));
		break;
	case 0x1b: /* TSCH Slotframe and Link IE. */
		{
			int sf_num, off, links, opts;

			if (sub_ie_len < 1) {
				ND_PRINT("[ERROR: Truncated IE]");
				break;
			}
			sf_num = GET_U_1(p);
			ND_PRINT("Slotframes = %d ", sf_num);
			off = 1;
			for(i = 0; i < sf_num; i++) {
				if (sub_ie_len < off + 4) {
					ND_PRINT("[ERROR: Truncated IE before slotframes]");
					break;
				}
				links = GET_U_1(p + off + 3);
				ND_PRINT("\n\t\t\t[ Handle %d, size = %d, links = %d ",
					 GET_U_1(p + off),
					 GET_LE_U_2(p + off + 1),
					 links);
				off += 4;
				for(j = 0; j < links; j++) {
					if (sub_ie_len < off + 5) {
						ND_PRINT("[ERROR: Truncated IE links]");
						break;
					}
					opts = GET_U_1(p + off + 4);
					ND_PRINT("\n\t\t\t\t[ Timeslot =  %d, Offset = %d, Options = ",
						 GET_LE_U_2(p + off),
						 GET_LE_U_2(p + off + 2));
					if (opts & 0x1) { ND_PRINT("TX "); }
					if (opts & 0x2) { ND_PRINT("RX "); }
					if (opts & 0x4) { ND_PRINT("Shared "); }
					if (opts & 0x8) {
						ND_PRINT("Timekeeping ");
					}
					if (opts & 0x10) {
						ND_PRINT("Priority ");
					}
					off += 5;
					ND_PRINT("] ");
				}
				ND_PRINT("] ");
			}
		}
		break;
	case 0x1c: /* TSCH Timeslot IE. */
		if (sub_ie_len == 1) {
			ND_PRINT("Time slot ID = %d ", GET_U_1(p));
		} else if (sub_ie_len == 25) {
			ND_PRINT("Time slot ID = %d, CCA Offset = %d, CCA = %d, TX Offset = %d, RX Offset = %d, RX Ack Delay = %d, TX Ack Delay = %d, RX Wait = %d, Ack Wait = %d, RX TX = %d, Max Ack = %d, Max TX = %d, Time slot Length = %d ",
				 GET_U_1(p),
				 GET_LE_U_2(p + 1),
				 GET_LE_U_2(p + 3),
				 GET_LE_U_2(p + 5),
				 GET_LE_U_2(p + 7),
				 GET_LE_U_2(p + 9),
				 GET_LE_U_2(p + 11),
				 GET_LE_U_2(p + 13),
				 GET_LE_U_2(p + 15),
				 GET_LE_U_2(p + 17),
				 GET_LE_U_2(p + 19),
				 GET_LE_U_2(p + 21),
				 GET_LE_U_2(p + 23));
		} else if (sub_ie_len == 27) {
			ND_PRINT("Time slot ID = %d, CCA Offset = %d, CCA = %d, TX Offset = %d, RX Offset = %d, RX Ack Delay = %d, TX Ack Delay = %d, RX Wait = %d, Ack Wait = %d, RX TX = %d, Max Ack = %d, Max TX = %d, Time slot Length = %d ",
				 GET_U_1(p),
				 GET_LE_U_2(p + 1),
				 GET_LE_U_2(p + 3),
				 GET_LE_U_2(p + 5),
				 GET_LE_U_2(p + 7),
				 GET_LE_U_2(p + 9),
				 GET_LE_U_2(p + 11),
				 GET_LE_U_2(p + 13),
				 GET_LE_U_2(p + 15),
				 GET_LE_U_2(p + 17),
				 GET_LE_U_2(p + 19),
				 GET_LE_U_3(p + 21),
				 GET_LE_U_3(p + 24));
		} else {
			ND_PRINT("[ERROR: Length not 1, 25, or 27]");
			ND_PRINT("\n\t\t\tIE Data = ");
			for(i = 0; i < sub_ie_len; i++) {
				ND_PRINT("%02x ", GET_U_1(p + i));
			}
		}
		break;
	case 0x1d: /* Hopping timing IE */
		/* XXX Not implemented */
	case 0x1e: /* Enhanced Beacon Filter IE */
		/* XXX Not implemented */
	case 0x1f: /* MAC Metrics IE */
		/* XXX Not implemented */
	case 0x20: /* All MAC Metrics IE */
		/* XXX Not implemented */
	case 0x21: /* Coexistence Specification IE */
		/* XXX Not implemented */
	case 0x22: /* SUN Device Capabilities IE */
		/* XXX Not implemented */
	case 0x23: /* SUN FSK Generic PHY IE */
		/* XXX Not implemented */
	case 0x24: /* Mode Switch Parameter IE */
		/* XXX Not implemented */
	case 0x25: /* PHY Parameter Change IE */
		/* XXX Not implemented */
	case 0x26: /* O-QPSK PHY Mode IE */
		/* XXX Not implemented */
	case 0x27: /* PCA Allocation IE */
		/* XXX Not implemented */
	case 0x28: /* LECIM DSSS Operating Mode IE */
		/* XXX Not implemented */
	case 0x29: /* LECIM FSK Operating Mode IE */
		/* XXX Not implemented */
	case 0x2b: /* TVWS PHY Operating Mode Description IE */
		/* XXX Not implemented */
	case 0x2c: /* TVWS Device Capabilities IE */
		/* XXX Not implemented */
	case 0x2d: /* TVWS Device Category IE */
		/* XXX Not implemented */
	case 0x2e: /* TVWS Device Identification IE */
		/* XXX Not implemented */
	case 0x2f: /* TVWS Device Location IE */
		/* XXX Not implemented */
	case 0x30: /* TVWS Channel Information Query IE */
		/* XXX Not implemented */
	case 0x31: /* TVWS Channel Information Source IE */
		/* XXX Not implemented */
	case 0x32: /* CTM IE */
		/* XXX Not implemented */
	case 0x33: /* Timestamp IE */
		/* XXX Not implemented */
	case 0x34: /* Timestamp Difference IE */
		/* XXX Not implemented */
	case 0x35: /* TMCTP Specification IE */
		/* XXX Not implemented */
	case 0x36: /* TCC PHY Operating Mode IE */
		/* XXX Not implemented */
	default:
		ND_PRINT("IE Data = ");
		for(i = 0; i < sub_ie_len; i++) {
			ND_PRINT("%02x ", GET_U_1(p + i));
		}
		break;
	}
}

/*
 * MLME IE list parsing and printing. See 7.4.3.2 of 802.15.4-2015
 * for more information.
 */
static void
ieee802_15_4_print_mlme_ie_list(netdissect_options *ndo,
				const u_char *p,
				uint16_t ie_len)
{
	int ie, sub_id, i, type;
	uint16_t sub_ie_len;

	do {
		if (ie_len < 2) {
			ND_PRINT("[ERROR: Truncated MLME IE]");
			return;
		}
		/* Extract IE header */
		ie = GET_LE_U_2(p);
		type = CHECK_BIT(ie, 15);
		if (type) {
			/* Long type */
			sub_ie_len = ie & 0x3ff;
			sub_id = (ie >> 11) & 0x0f;
		} else {
			sub_ie_len = ie & 0xff;
			sub_id = (ie >> 8) & 0x7f;
		}

		/* Skip the IE header */
		p += 2;

		if (type == 0) {
			ND_PRINT("\n\t\t%s [ length = %d, ",
				 p_mlme_short_names[sub_id], sub_ie_len);
		} else {
			ND_PRINT("\n\t\t%s [ length = %d, ",
				 p_mlme_long_names[sub_id], sub_ie_len);
		}

		if (ie_len < 2 + sub_ie_len) {
			ND_PRINT("[ERROR: Truncated IE data]");
			return;
		}
		if (sub_ie_len != 0) {
			if (ndo->ndo_vflag > 3) {
				ieee802_15_4_print_mlme_ie(ndo, p, sub_ie_len, sub_id);
			} else if (ndo->ndo_vflag > 2) {
				ND_PRINT("IE Data = ");
				for(i = 0; i < sub_ie_len; i++) {
					ND_PRINT("%02x ", GET_U_1(p + i));
				}
			}
		}
		ND_PRINT("] ");
		p += sub_ie_len;
		ie_len -= 2 + sub_ie_len;
	} while (ie_len > 0);
}

/*
 * Multiplexd IE (802.15.9) parsing and printing.
 *
 * Returns number of bytes consumed from packet or -1 in case of error.
 */
static void
ieee802_15_4_print_mpx_ie(netdissect_options *ndo,
			  const u_char *p,
			  uint16_t ie_len)
{
	int transfer_type, tid;
	int fragment_number, data_start;
	int i;

	data_start = 0;
	if (ie_len < 1) {
		ND_PRINT("[ERROR: Transaction control byte missing]");
		return;
	}

	transfer_type = GET_U_1(p) & 0x7;
	tid = GET_U_1(p) >> 3;
	switch (transfer_type) {
	case 0x00: /* Full upper layer frame. */
	case 0x01: /* Full upper layer frame with small Multiplex ID. */
		ND_PRINT("Type = Full upper layer fragment%s, ",
			 (transfer_type == 0x01 ?
			  " with small Multiplex ID" : ""));
		if (transfer_type == 0x00) {
			if (ie_len < 3) {
				ND_PRINT("[ERROR: Multiplex ID missing]");
				return;
			}
			data_start = 3;
			ND_PRINT("tid = 0x%02x, Multiplex ID = 0x%04x, ",
				 tid, GET_LE_U_2(p + 1));
		} else {
			data_start = 1;
			ND_PRINT("Multiplex ID = 0x%04x, ", tid);
		}
		break;
	case 0x02: /* First, or middle, Fragments */
	case 0x04: /* Last fragment */
		if (ie_len < 2) {
			ND_PRINT("[ERROR: fragment number missing]");
			return;
		}

		fragment_number = GET_U_1(p + 1);
		ND_PRINT("Type = %s, tid = 0x%02x, fragment = 0x%02x, ",
			 (transfer_type == 0x02 ?
			  (fragment_number == 0 ?
			   "First fragment" : "Middle fragment") :
			  "Last fragment"), tid,
			 fragment_number);
		data_start = 2;
		if (fragment_number == 0) {
			int total_size, multiplex_id;

			if (ie_len < 6) {
				ND_PRINT("[ERROR: Total upper layer size or multiplex ID missing]");
				return;
			}
			total_size = GET_LE_U_2(p + 2);
			multiplex_id = GET_LE_U_2(p + 4);
			ND_PRINT("Total upper layer size = 0x%04x, Multiplex ID = 0x%04x, ",
				 total_size, multiplex_id);
			data_start = 6;
		}
		break;
	case 0x06: /* Abort code */
		if (ie_len == 1) {
			ND_PRINT("Type = Abort, tid = 0x%02x, no max size given",
				 tid);
		} else if (ie_len == 3) {
			ND_PRINT("Type = Abort, tid = 0x%02x, max size = 0x%04x",
				 tid, GET_LE_U_2(p + 1));
		} else {
			ND_PRINT("Type = Abort, tid = 0x%02x, invalid length = %d (not 1 or 3)",
				 tid, ie_len);
			ND_PRINT("Abort data = ");
			for(i = 1; i < ie_len; i++) {
				ND_PRINT("%02x ", GET_U_1(p + i));
			}
		}
		return;
		/* NOTREACHED */
		break;
	case 0x03: /* Reserved */
	case 0x05: /* Reserved */
	case 0x07: /* Reserved */
		ND_PRINT("Type = %d (Reserved), tid = 0x%02x, ",
			 transfer_type, tid);
		data_start = 1;
		break;
	}

	ND_PRINT("Upper layer data = ");
	for(i = data_start; i < ie_len; i++) {
		ND_PRINT("%02x ", GET_U_1(p + i));
	}
}

/*
 * Payload IE list parsing and printing. See 7.4.3 of 802.15.4-2015
 * for more information.
 *
 * Returns number of byts consumed from the packet or -1 in case of error.
 */
static int
ieee802_15_4_print_payload_ie_list(netdissect_options *ndo,
				   const u_char *p,
				   u_int caplen)
{
	int len, ie, group_id, i;
	uint16_t ie_len;

	len = 0;
	do {
		if (caplen < 2) {
			ND_PRINT("[ERROR: Truncated header IE]");
			return -1;
		}
		/* Extract IE header */
		ie = GET_LE_U_2(p);
		if ((CHECK_BIT(ie, 15)) == 0) {
			ND_PRINT("[ERROR: Payload IE with type 0] ");
		}
		ie_len = ie & 0x3ff;
		group_id = (ie >> 11) & 0x0f;

		/* Skip the IE header */
		p += 2;
		if (ie_len == 0) {
			ND_PRINT("\n\t%s [", p_ie_names[group_id]);
		} else {
			ND_PRINT("\n\t%s [ length = %d, ",
				 p_ie_names[group_id], ie_len);
		}
		if (caplen < 2U + ie_len) {
			ND_PRINT("[ERROR: Truncated IE data]");
			return -1;
		}
		if (ndo->ndo_vflag > 3 && ie_len != 0) {
			switch (group_id) {
			case 0x1: /* MLME IE */
				ieee802_15_4_print_mlme_ie_list(ndo, p, ie_len);
				break;
			case 0x2: /* Vendor Specific Nested IE */
				if (ie_len < 3) {
					ND_PRINT("[ERROR: Vendor OUI missing]");
				} else {
					ND_PRINT("OUI = 0x%02x%02x%02x, ",
						 GET_U_1(p),
						 GET_U_1(p + 1),
						 GET_U_1(p + 2));
					ND_PRINT("Data = ");
					for(i = 3; i < ie_len; i++) {
						ND_PRINT("%02x ",
							 GET_U_1(p + i));
					}
				}
				break;
			case 0x3: /* Multiplexed IE (802.15.9) */
				ieee802_15_4_print_mpx_ie(ndo, p, ie_len);
				break;
			case 0x5: /* IETF IE */
				if (ie_len < 1) {
					ND_PRINT("[ERROR: Subtype ID missing]");
				} else {
					ND_PRINT("Subtype ID = 0x%02x, Subtype content = ",
						 GET_U_1(p));
					for(i = 1; i < ie_len; i++) {
						ND_PRINT("%02x ",
							 GET_U_1(p + i));
					}
				}
				break;
			default:
				ND_PRINT("IE Data = ");
				for(i = 0; i < ie_len; i++) {
					ND_PRINT("%02x ", GET_U_1(p + i));
				}
				break;
			}
		} else {
			if (ie_len != 0) {
				ND_PRINT("IE Data = ");
				for(i = 0; i < ie_len; i++) {
					ND_PRINT("%02x ", GET_U_1(p + i));
				}
			}
		}
		ND_PRINT("]\n\t");
		len += 2 + ie_len;
		p += ie_len;
		caplen -= 2 + ie_len;
		if (group_id == 0xf) {
			break;
		}
	} while (caplen > 0);
	return len;
}

/*
 * Parse and print auxiliary security header.
 *
 * Returns number of byts consumed from the packet or -1 in case of error.
 */
static int
ieee802_15_4_print_aux_sec_header(netdissect_options *ndo,
				  const u_char *p,
				  u_int caplen,
				  int *security_level)
{
	int sc, key_id_mode, len;

	if (caplen < 1) {
		ND_PRINT("[ERROR: Truncated before Aux Security Header]");
		return -1;
	}
	sc = GET_U_1(p);
	len = 1;
	*security_level = sc & 0x7;
	key_id_mode = (sc >> 3) & 0x3;

	caplen -= 1;
	p += 1;

	if (ndo->ndo_vflag > 0) {
		ND_PRINT("\n\tSecurity Level %d, Key Id Mode %d, ",
			 *security_level, key_id_mode);
	}
	if ((CHECK_BIT(sc, 5)) == 0) {
		if (caplen < 4) {
			ND_PRINT("[ERROR: Truncated before Frame Counter]");
			return -1;
		}
		if (ndo->ndo_vflag > 1) {
			ND_PRINT("Frame Counter 0x%08x ",
				 GET_LE_U_4(p));
		}
		p += 4;
		caplen -= 4;
		len += 4;
	}
	switch (key_id_mode) {
	case 0x00: /* Implicit. */
		if (ndo->ndo_vflag > 1) {
			ND_PRINT("Implicit");
		}
		return len;
		break;
	case 0x01: /* Key Index, nothing to print here. */
		break;
	case 0x02: /* PAN and Short address Key Source, and Key Index. */
		if (caplen < 4) {
			ND_PRINT("[ERROR: Truncated before Key Source]");
			return -1;
		}
		if (ndo->ndo_vflag > 1) {
			ND_PRINT("KeySource 0x%04x:%0x4x, ",
				 GET_LE_U_2(p), GET_LE_U_2(p + 2));
		}
		p += 4;
		caplen -= 4;
		len += 4;
		break;
	case 0x03: /* Extended address and Key Index. */
		if (caplen < 8) {
			ND_PRINT("[ERROR: Truncated before Key Source]");
			return -1;
		}
		if (ndo->ndo_vflag > 1) {
			ND_PRINT("KeySource %s, ", GET_LE64ADDR_STRING(p));
		}
		p += 4;
		caplen -= 4;
		len += 4;
		break;
	}
	if (caplen < 1) {
		ND_PRINT("[ERROR: Truncated before Key Index]");
		return -1;
	}
	if (ndo->ndo_vflag > 1) {
		ND_PRINT("KeyIndex 0x%02x, ", GET_U_1(p));
	}
	caplen -= 1;
	p += 1;
	len += 1;
	return len;
}

/*
 * Print command data.
 *
 * Returns number of byts consumed from the packet or -1 in case of error.
 */
static int
ieee802_15_4_print_command_data(netdissect_options *ndo,
				uint8_t command_id,
				const u_char *p,
				u_int caplen)
{
	u_int i;

	switch (command_id) {
	case 0x01: /* Association Request */
		if (caplen != 1) {
			ND_PRINT("Invalid Association request command length");
			return -1;
		} else {
			uint8_t cap_info;
			cap_info = GET_U_1(p);
			ND_PRINT("%s%s%s%s%s%s",
				 ((cap_info & 0x02) ?
				  "FFD, " : "RFD, "),
				 ((cap_info & 0x04) ?
				  "AC powered, " : ""),
				 ((cap_info & 0x08) ?
				  "Receiver on when idle, " : ""),
				 ((cap_info & 0x10) ?
				  "Fast association, " : ""),
				 ((cap_info & 0x40) ?
				  "Security supported, " : ""),
				 ((cap_info & 0x80) ?
				  "Allocate address, " : ""));
			return caplen;
		}
		break;
	case 0x02: /* Association Response */
		if (caplen != 3) {
			ND_PRINT("Invalid Association response command length");
			return -1;
		} else {
			ND_PRINT("Short address = ");
			ieee802_15_4_print_addr(ndo, p, 2);
			switch (GET_U_1(p + 2)) {
			case 0x00:
				ND_PRINT(", Association successful");
				break;
			case 0x01:
				ND_PRINT(", PAN at capacity");
				break;
			case 0x02:
				ND_PRINT(", PAN access denied");
				break;
			case 0x03:
				ND_PRINT(", Hooping sequence offset duplication");
				break;
			case 0x80:
				ND_PRINT(", Fast association successful");
				break;
			default:
				ND_PRINT(", Status = 0x%02x",
					 GET_U_1(p + 2));
				break;
			}
			return caplen;
		}
		break;
	case 0x03: /* Diassociation Notification command */
		if (caplen != 1) {
			ND_PRINT("Invalid Disassociation Notification command length");
			return -1;
		} else {
			switch (GET_U_1(p)) {
			case 0x00:
				ND_PRINT("Reserved");
				break;
			case 0x01:
				ND_PRINT("Reason = The coordinator wishes the device to leave PAN");
				break;
			case 0x02:
				ND_PRINT("Reason = The device wishes to leave the PAN");
				break;
			default:
				ND_PRINT("Reason = 0x%02x", GET_U_1(p + 2));
				break;
			}
			return caplen;
		}

		/* Following ones do not have any data. */
	case 0x04: /* Data Request command */
	case 0x05: /* PAN ID Conflict Notification command */
	case 0x06: /* Orphan Notification command */
	case 0x07: /* Beacon Request command */
		/* Should not have any data. */
		return 0;
	case 0x08: /* Coordinator Realignment command */
		if (caplen < 7 || caplen > 8) {
			ND_PRINT("Invalid Coordinator Realignment command length");
			return -1;
		} else {
			uint16_t channel, page;

			ND_PRINT("Pan ID = 0x%04x, Coordinator short address = ",
				 GET_LE_U_2(p));
			ieee802_15_4_print_addr(ndo, p + 2, 2);
			channel = GET_U_1(p + 4);

			if (caplen == 8) {
				page = GET_U_1(p + 7);
			} else {
				page = 0x80;
			}
			if (CHECK_BIT(page, 7)) {
				/* No page present, instead we have msb of
				   channel in the page. */
				channel |= (page & 0x7f) << 8;
				ND_PRINT(", Channel Number = %d", channel);
			} else {
				ND_PRINT(", Channel Number = %d, page = %d",
					 channel, page);
			}
			ND_PRINT(", Short address = ");
			ieee802_15_4_print_addr(ndo, p + 5, 2);
			return caplen;
		}
		break;
	case 0x09: /* GTS Request command */
		if (caplen != 1) {
			ND_PRINT("Invalid GTS Request command length");
			return -1;
		} else {
			uint8_t gts;

			gts = GET_U_1(p);
			ND_PRINT("GTS Length = %d, %s, %s",
				 gts & 0xf,
				 (CHECK_BIT(gts, 4) ?
				  "Receive-only GTS" : "Transmit-only GTS"),
				 (CHECK_BIT(gts, 5) ?
				  "GTS allocation" : "GTS deallocations"));
			return caplen;
		}
		break;
	case 0x13: /* DSME Association Request command */
		/* XXX Not implemented */
	case 0x14: /* DSME Association Response command */
		/* XXX Not implemented */
	case 0x15: /* DSME GTS Request command */
		/* XXX Not implemented */
	case 0x16: /* DSME GTS Response command */
		/* XXX Not implemented */
	case 0x17: /* DSME GTS Notify command */
		/* XXX Not implemented */
	case 0x18: /* DSME Information Request command */
		/* XXX Not implemented */
	case 0x19: /* DSME Information Response command */
		/* XXX Not implemented */
	case 0x1a: /* DSME Beacon Allocation Notification command */
		/* XXX Not implemented */
	case 0x1b: /* DSME Beacon Collision Notification command */
		/* XXX Not implemented */
	case 0x1c: /* DSME Link Report command */
		/* XXX Not implemented */
	case 0x20: /* RIT Data Request command */
		/* XXX Not implemented */
	case 0x21: /* DBS Request command */
		/* XXX Not implemented */
	case 0x22: /* DBS Response command */
		/* XXX Not implemented */
	case 0x23: /* RIT Data Response command */
		/* XXX Not implemented */
	case 0x24: /* Vendor Specific command */
		/* XXX Not implemented */
	case 0x0a: /* TRLE Management Request command */
		/* XXX Not implemented */
	case 0x0b: /* TRLE Management Response command */
		/* XXX Not implemented */
	default:
		ND_PRINT("Command Data = ");
		for(i = 0; i < caplen; i++) {
			ND_PRINT("%02x ", GET_U_1(p + i));
		}
		break;
	}
	return 0;
}

/*
 * Parse and print frames following standard format.
 *
 * Returns FALSE in case of error.
 */
static u_int
ieee802_15_4_std_frames(netdissect_options *ndo,
			const u_char *p, u_int caplen,
			uint16_t fc)
{
	int len, frame_version, pan_id_comp;
	int frame_type;
	int src_pan, dst_pan, src_addr_len, dst_addr_len;
	int security_level;
	u_int miclen = 0;
	int payload_ie_present;
	uint8_t seq;
	uint32_t fcs, crc_check;
	const u_char *mic_start = NULL;

	payload_ie_present = 0;

	crc_check = 0;
	/* Assume 2 octet FCS, the FCS length depends on the PHY, and we do not
	   know about that. */
	if (caplen < 4) {
		/* Cannot have FCS, assume no FCS. */
		fcs = 0;
	} else {
		/* Test for 4 octet FCS. */
		fcs = GET_LE_U_4(p + caplen - 4);
		crc_check = ieee802_15_4_crc32(ndo, p, caplen - 4);
		if (crc_check == fcs) {
			/* Remove FCS */
			caplen -= 4;
		} else {
			/* Test for 2 octet FCS. */
			fcs = GET_LE_U_2(p + caplen - 2);
			crc_check = ieee802_15_4_crc16(ndo, p, caplen - 2);
			if (crc_check == fcs) {
				/* Remove FCS */
				caplen -= 2;
			} else {
				/* Wrong FCS, FCS might not be included in the
				   captured frame, do not remove it. */
			}
		}
	}

	/* Frame version. */
	frame_version = FC_FRAME_VERSION(fc);
	frame_type = FC_FRAME_TYPE(fc);
	ND_PRINT("v%d ", frame_version);

	if (ndo->ndo_vflag > 2) {
		if (CHECK_BIT(fc, 3)) { ND_PRINT("Security Enabled, "); }
		if (CHECK_BIT(fc, 4)) { ND_PRINT("Frame Pending, "); }
		if (CHECK_BIT(fc, 5)) { ND_PRINT("AR, "); }
		if (CHECK_BIT(fc, 6)) { ND_PRINT("PAN ID Compression, "); }
		if (CHECK_BIT(fc, 8)) { ND_PRINT("Sequence Number Suppression, "); }
		if (CHECK_BIT(fc, 9)) { ND_PRINT("IE present, "); }
	}

	/* Check for the sequence number suppression. */
	if (CHECK_BIT(fc, 8)) {
		/* Sequence number is suppressed. */
		if (frame_version < 2) {
			/* Sequence number can only be suppressed for frame
			   version 2 or higher, this is invalid frame. */
			ND_PRINT("[ERROR: Sequence number suppressed on frames where version < 2]");
		}
		if (ndo->ndo_vflag)
			ND_PRINT("seq suppressed ");
		if (caplen < 2) {
			nd_print_trunc(ndo);
			return 0;
		}
		p += 2;
		caplen -= 2;
	} else {
		seq = GET_U_1(p + 2);
		if (ndo->ndo_vflag)
			ND_PRINT("seq %02x ", seq);
		if (caplen < 3) {
			nd_print_trunc(ndo);
			return 0;
		}
		p += 3;
		caplen -= 3;
	}

	/* See which parts of addresses we have. */
	dst_addr_len = ieee802_15_4_addr_len((fc >> 10) & 0x3);
	src_addr_len = ieee802_15_4_addr_len((fc >> 14) & 0x3);
	if (src_addr_len < 0) {
		ND_PRINT("[ERROR: Invalid src address mode]");
		return 0;
	}
	if (dst_addr_len < 0) {
		ND_PRINT("[ERROR: Invalid dst address mode]");
		return 0;
	}
	src_pan = 0;
	dst_pan = 0;
	pan_id_comp = CHECK_BIT(fc, 6);

	/* The PAN ID Compression rules are complicated. */

	/* First check old versions, where the rules are simple. */
	if (frame_version < 2) {
		if (pan_id_comp) {
			src_pan = 0;
			dst_pan = 1;
			if (dst_addr_len <= 0 || src_addr_len <= 0) {
				/* Invalid frame, PAN ID Compression must be 0
				   if only one address in the frame. */
				ND_PRINT("[ERROR: PAN ID Compression != 0, and only one address with frame version < 2]");
			}
		} else {
			src_pan = 1;
			dst_pan = 1;
		}
		if (dst_addr_len <= 0) {
			dst_pan = 0;
		}
		if (src_addr_len <= 0) {
			src_pan = 0;
		}
	} else {
		/* Frame version 2 rules are more complicated, and they depend
		   on the address modes of the frame, generic rules are same,
		   but then there are some special cases. */
		if (pan_id_comp) {
			src_pan = 0;
			dst_pan = 1;
		} else {
			src_pan = 1;
			dst_pan = 1;
		}
		if (dst_addr_len <= 0) {
			dst_pan = 0;
		}
		if (src_addr_len <= 0) {
			src_pan = 0;
		}
		if (pan_id_comp) {
			if (src_addr_len == 0 &&
			    dst_addr_len == 0) {
				/* Both addresses are missing, but PAN ID
				   compression set, special case we have
				   destination PAN but no addresses. */
				dst_pan = 1;
			} else if ((src_addr_len == 0 &&
				    dst_addr_len > 0) ||
				   (src_addr_len > 0 &&
				    dst_addr_len == 0)) {
				/* Only one address present, and PAN ID
				   compression is set, we do not have PAN id at
				   all. */
				dst_pan = 0;
				src_pan = 0;
			} else if (src_addr_len == 8 &&
				   dst_addr_len == 8) {
				/* Both addresses are Extended, and PAN ID
				   compression set, we do not have PAN ID at
				   all. */
				dst_pan = 0;
				src_pan = 0;
			}
		} else {
			/* Special cases where PAN ID Compression is not set. */
			if (src_addr_len == 8 &&
			    dst_addr_len == 8) {
				/* Both addresses are Extended, and PAN ID
				   compression not set, we do have only one PAN
				   ID (destination). */
				dst_pan = 1;
				src_pan = 0;
			}
#ifdef BROKEN_6TISCH_PAN_ID_COMPRESSION
			if (src_addr_len == 8 &&
			    dst_addr_len == 2) {
				/* Special case for the broken 6tisch
				   implementations. */
				src_pan = 0;
			}
#endif /* BROKEN_6TISCH_PAN_ID_COMPRESSION */
		}
	}

	/* Print dst PAN and address. */
	if (dst_pan) {
		if (caplen < 2) {
			ND_PRINT("[ERROR: Truncated before dst_pan]");
			return 0;
		}
		ND_PRINT("%04x:", GET_LE_U_2(p));
		p += 2;
		caplen -= 2;
	} else {
		ND_PRINT("-:");
	}
	if (caplen < (u_int) dst_addr_len) {
		ND_PRINT("[ERROR: Truncated before dst_addr]");
		return 0;
	}
	ieee802_15_4_print_addr(ndo, p, dst_addr_len);
	p += dst_addr_len;
	caplen -= dst_addr_len;

	ND_PRINT(" < ");

	/* Print src PAN and address. */
	if (src_pan) {
		if (caplen < 2) {
			ND_PRINT("[ERROR: Truncated before dst_pan]");
			return 0;
		}
		ND_PRINT("%04x:", GET_LE_U_2(p));
		p += 2;
		caplen -= 2;
	} else {
		ND_PRINT("-:");
	}
	if (caplen < (u_int) src_addr_len) {
		ND_PRINT("[ERROR: Truncated before dst_addr]");
		return 0;
	}
	ieee802_15_4_print_addr(ndo, p, src_addr_len);
	ND_PRINT(" ");
	p += src_addr_len;
	caplen -= src_addr_len;
	if (CHECK_BIT(fc, 3)) {
		/*
		 * XXX - if frame_version is 0, this is the 2003
		 * spec, and you don't have the auxiliary security
		 * header, you have a frame counter and key index
		 * for the AES-CTR and AES-CCM security suites but
		 * not for the AES-CBC-MAC security suite.
		 */
		len = ieee802_15_4_print_aux_sec_header(ndo, p, caplen,
							&security_level);
		if (len < 0) {
			return 0;
		}
		ND_TCHECK_LEN(p, len);
		p += len;
		caplen -= len;
	} else {
		security_level = 0;
	}

	switch (security_level) {
	case 0: /*FALLTHOUGH */
	case 4:
		miclen = 0;
		break;
	case 1: /*FALLTHOUGH */
	case 5:
		miclen = 4;
		break;
	case 2: /*FALLTHOUGH */
	case 6:
		miclen = 8;
		break;
	case 3: /*FALLTHOUGH */
	case 7:
		miclen = 16;
		break;
	}

	/* Remove MIC */
	if (miclen != 0) {
		if (caplen < miclen) {
			ND_PRINT("[ERROR: Truncated before MIC]");
			return 0;
		}
		caplen -= miclen;
		mic_start = p + caplen;
	}

	/* Parse Information elements if present */
	if (CHECK_BIT(fc, 9)) {
		/* Yes we have those. */
		len = ieee802_15_4_print_header_ie_list(ndo, p, caplen,
							&payload_ie_present);
		if (len < 0) {
			return 0;
		}
		p += len;
		caplen -= len;
	}

	if (payload_ie_present) {
		if (security_level >= 4) {
			ND_PRINT("Payload IEs present, but encrypted, cannot print ");
		} else {
			len = ieee802_15_4_print_payload_ie_list(ndo, p, caplen);
			if (len < 0) {
				return 0;
			}
			p += len;
			caplen -= len;
		}
	}

	/* Print MIC */
	if (ndo->ndo_vflag > 2 && miclen != 0) {
		ND_PRINT("\n\tMIC ");

		for (u_int micoffset = 0; micoffset < miclen; micoffset++) {
			ND_PRINT("%02x", GET_U_1(mic_start + micoffset));
		}
		ND_PRINT(" ");
	}

	/* Print FCS */
	if (ndo->ndo_vflag > 2) {
		if (crc_check == fcs) {
			ND_PRINT("FCS %x ", fcs);
		} else {
			ND_PRINT("wrong FCS %x vs %x (assume no FCS stored) ",
				 fcs, crc_check);
		}
	}

	/* Payload print */
	switch (frame_type) {
	case 0x00: /* Beacon */
		if (frame_version < 2) {
			if (caplen < 2) {
				ND_PRINT("[ERROR: Truncated before beacon information]");
				break;
			} else {
				uint16_t ss;

				ss = GET_LE_U_2(p);
				ieee802_15_4_print_superframe_specification(ndo, ss);
				p += 2;
				caplen -= 2;

				/* GTS */
				if (caplen < 1) {
					ND_PRINT("[ERROR: Truncated before GTS info]");
					break;
				}

				len = ieee802_15_4_print_gts_info(ndo, p, caplen);
				if (len < 0) {
					break;
				}

				p += len;
				caplen -= len;

				/* Pending Addresses */
				if (caplen < 1) {
					ND_PRINT("[ERROR: Truncated before pending addresses]");
					break;
				}
				len = ieee802_15_4_print_pending_addresses(ndo, p, caplen);
				if (len < 0) {
					break;
				}
				ND_TCHECK_LEN(p, len);
				p += len;
				caplen -= len;
			}
		}
		if (!ndo->ndo_suppress_default_print)
			ND_DEFAULTPRINT(p, caplen);

		break;
	case 0x01: /* Data */
	case 0x02: /* Acknowledgement */
		if (!ndo->ndo_suppress_default_print)
			ND_DEFAULTPRINT(p, caplen);
		break;
	case 0x03: /* MAC Command */
		if (caplen < 1) {
			ND_PRINT("[ERROR: Truncated before Command ID]");
		} else {
			uint8_t command_id;

			command_id = GET_U_1(p);
			if (command_id >= 0x30) {
				ND_PRINT("Command ID = Reserved 0x%02x ",
					 command_id);
			} else {
				ND_PRINT("Command ID = %s ",
					 mac_c_names[command_id]);
			}
			p++;
			caplen--;
			if (caplen != 0) {
				len = ieee802_15_4_print_command_data(ndo, command_id, p, caplen);
				if (len >= 0) {
					p += len;
					caplen -= len;
				}
			}
		}
		if (!ndo->ndo_suppress_default_print)
			ND_DEFAULTPRINT(p, caplen);
		break;
	}
	return 1;
}

/*
 * Print and parse Multipurpose frames.
 *
 * Returns FALSE in case of error.
 */
static u_int
ieee802_15_4_mp_frame(netdissect_options *ndo,
		      const u_char *p, u_int caplen,
		      uint16_t fc)
{
	int len, frame_version, pan_id_present;
	int src_addr_len, dst_addr_len;
	int security_level;
	u_int miclen = 0;
	int ie_present, payload_ie_present, security_enabled;
	uint8_t seq;
	uint32_t fcs, crc_check;
	const u_char *mic_start = NULL;

	pan_id_present = 0;
	ie_present = 0;
	payload_ie_present = 0;
	security_enabled = 0;
	crc_check = 0;

	/* Assume 2 octet FCS, the FCS length depends on the PHY, and we do not
	   know about that. */
	if (caplen < 3) {
		/* Cannot have FCS, assume no FCS. */
		fcs = 0;
	} else {
		if (caplen > 4) {
			/* Test for 4 octet FCS. */
			fcs = GET_LE_U_4(p + caplen - 4);
			crc_check = ieee802_15_4_crc32(ndo, p, caplen - 4);
			if (crc_check == fcs) {
				/* Remove FCS */
				caplen -= 4;
			} else {
				fcs = GET_LE_U_2(p + caplen - 2);
				crc_check = ieee802_15_4_crc16(ndo, p, caplen - 2);
				if (crc_check == fcs) {
					/* Remove FCS */
					caplen -= 2;
				}
			}
		} else {
			fcs = GET_LE_U_2(p + caplen - 2);
			crc_check = ieee802_15_4_crc16(ndo, p, caplen - 2);
			if (crc_check == fcs) {
				/* Remove FCS */
				caplen -= 2;
			}
		}
	}

	if (CHECK_BIT(fc, 3)) {
		/* Long Frame Control */

		/* Frame version. */
		frame_version = FC_FRAME_VERSION(fc);
		ND_PRINT("v%d ", frame_version);

		pan_id_present = CHECK_BIT(fc, 8);
		ie_present = CHECK_BIT(fc, 15);
		security_enabled = CHECK_BIT(fc, 9);

		if (ndo->ndo_vflag > 2) {
			if (security_enabled) { ND_PRINT("Security Enabled, "); }
			if (CHECK_BIT(fc, 11)) { ND_PRINT("Frame Pending, "); }
			if (CHECK_BIT(fc, 14)) { ND_PRINT("AR, "); }
			if (pan_id_present) { ND_PRINT("PAN ID Present, "); }
			if (CHECK_BIT(fc, 10)) {
				ND_PRINT("Sequence Number Suppression, ");
			}
			if (ie_present) { ND_PRINT("IE present, "); }
		}

		/* Check for the sequence number suppression. */
		if (CHECK_BIT(fc, 10)) {
			/* Sequence number is suppressed, but long version. */
			if (caplen < 2) {
				nd_print_trunc(ndo);
				return 0;
			}
			p += 2;
			caplen -= 2;
		} else {
			seq = GET_U_1(p + 2);
			if (ndo->ndo_vflag)
				ND_PRINT("seq %02x ", seq);
			if (caplen < 3) {
				nd_print_trunc(ndo);
				return 0;
			}
			p += 3;
			caplen -= 3;
		}
	} else {
		/* Short format of header, but with seq no */
		seq = GET_U_1(p + 1);
		p += 2;
		caplen -= 2;
		if (ndo->ndo_vflag)
			ND_PRINT("seq %02x ", seq);
	}

	/* See which parts of addresses we have. */
	dst_addr_len = ieee802_15_4_addr_len((fc >> 4) & 0x3);
	src_addr_len = ieee802_15_4_addr_len((fc >> 6) & 0x3);
	if (src_addr_len < 0) {
		ND_PRINT("[ERROR: Invalid src address mode]");
		return 0;
	}
	if (dst_addr_len < 0) {
		ND_PRINT("[ERROR: Invalid dst address mode]");
		return 0;
	}

	/* Print dst PAN and address. */
	if (pan_id_present) {
		if (caplen < 2) {
			ND_PRINT("[ERROR: Truncated before dst_pan]");
			return 0;
		}
		ND_PRINT("%04x:", GET_LE_U_2(p));
		p += 2;
		caplen -= 2;
	} else {
		ND_PRINT("-:");
	}
	if (caplen < (u_int) dst_addr_len) {
		ND_PRINT("[ERROR: Truncated before dst_addr]");
		return 0;
	}
	ieee802_15_4_print_addr(ndo, p, dst_addr_len);
	p += dst_addr_len;
	caplen -= dst_addr_len;

	ND_PRINT(" < ");

	/* Print src PAN and address. */
	ND_PRINT(" -:");
	if (caplen < (u_int) src_addr_len) {
		ND_PRINT("[ERROR: Truncated before dst_addr]");
		return 0;
	}
	ieee802_15_4_print_addr(ndo, p, src_addr_len);
	ND_PRINT(" ");
	p += src_addr_len;
	caplen -= src_addr_len;

	if (security_enabled) {
		len = ieee802_15_4_print_aux_sec_header(ndo, p, caplen,
							&security_level);
		if (len < 0) {
			return 0;
		}
		ND_TCHECK_LEN(p, len);
		p += len;
		caplen -= len;
	} else {
		security_level = 0;
	}

	switch (security_level) {
	case 0: /*FALLTHOUGH */
	case 4:
		miclen = 0;
		break;
	case 1: /*FALLTHOUGH */
	case 5:
		miclen = 4;
		break;
	case 2: /*FALLTHOUGH */
	case 6:
		miclen = 8;
		break;
	case 3: /*FALLTHOUGH */
	case 7:
		miclen = 16;
		break;
	}

	/* Remove MIC */
	if (miclen != 0) {
		if (caplen < miclen) {
			ND_PRINT("[ERROR: Truncated before MIC]");
			return 0;
		}
		caplen -= miclen;
		mic_start = p + caplen;
	}

	/* Parse Information elements if present */
	if (ie_present) {
		/* Yes we have those. */
		len = ieee802_15_4_print_header_ie_list(ndo, p, caplen,
							&payload_ie_present);
		if (len < 0) {
			return 0;
		}
		p += len;
		caplen -= len;
	}

	if (payload_ie_present) {
		if (security_level >= 4) {
			ND_PRINT("Payload IEs present, but encrypted, cannot print ");
		} else {
			len = ieee802_15_4_print_payload_ie_list(ndo, p,
								 caplen);
			if (len < 0) {
				return 0;
			}
			p += len;
			caplen -= len;
		}
	}

	/* Print MIC */
	if (ndo->ndo_vflag > 2 && miclen != 0) {
		ND_PRINT("\n\tMIC ");

		for (u_int micoffset = 0; micoffset < miclen; micoffset++) {
			ND_PRINT("%02x", GET_U_1(mic_start + micoffset));
		}
		ND_PRINT(" ");
	}


	/* Print FCS */
	if (ndo->ndo_vflag > 2) {
		if (crc_check == fcs) {
			ND_PRINT("FCS %x ", fcs);
		} else {
			ND_PRINT("wrong FCS %x vs %x (assume no FCS stored) ",
				 fcs, crc_check);
		}
	}

	if (!ndo->ndo_suppress_default_print)
		ND_DEFAULTPRINT(p, caplen);

	return 1;
}

/*
 * Print frag frame.
 *
 * Returns FALSE in case of error.
 */
static u_int
ieee802_15_4_frag_frame(netdissect_options *ndo _U_,
			const u_char *p _U_,
			u_int caplen _U_,
			uint16_t fc _U_)
{
	/* Not implement yet, might be bit hard to implement, as the
	 * information to set up the fragment is coming in the previous frame
	 * in the Fragment Sequence Context Description IE, thus we need to
	 * store information from there, so we can use it here. */
	return 0;
}

/*
 * Internal call to dissector taking packet + len instead of pcap_pkthdr.
 *
 * Returns FALSE in case of error.
 */
u_int
ieee802_15_4_print(netdissect_options *ndo,
		   const u_char *p, u_int caplen)
{
	int frame_type;
	uint16_t fc;

	ndo->ndo_protocol = "802.15.4";

	if (caplen < 2) {
		nd_print_trunc(ndo);
		return caplen;
	}

	fc = GET_LE_U_2(p);

	/* First we need to check the frame type to know how to parse the rest
	   of the FC. Frame type is the first 3 bit of the frame control field.
	*/

	frame_type = FC_FRAME_TYPE(fc);
	ND_PRINT("IEEE 802.15.4 %s packet ", ftypes[frame_type]);

	switch (frame_type) {
	case 0x00: /* Beacon */
	case 0x01: /* Data */
	case 0x02: /* Acknowledgement */
	case 0x03: /* MAC Command */
		return ieee802_15_4_std_frames(ndo, p, caplen, fc);
		break;
	case 0x04: /* Reserved */
		return 0;
		break;
	case 0x05: /* Multipurpose */
		return ieee802_15_4_mp_frame(ndo, p, caplen, fc);
		break;
	case 0x06: /* Fragment or Frak */
		return ieee802_15_4_frag_frame(ndo, p, caplen, fc);
		break;
	case 0x07: /* Extended */
		return 0;
		break;
	}
	return 0;
}

/*
 * Main function to print packets.
 */

void
ieee802_15_4_if_print(netdissect_options *ndo,
                      const struct pcap_pkthdr *h, const u_char *p)
{
	u_int caplen = h->caplen;
	ndo->ndo_protocol = "802.15.4";
	ndo->ndo_ll_hdr_len += ieee802_15_4_print(ndo, p, caplen);
}

/* For DLT_IEEE802_15_4_TAP */
/* https://github.com/jkcko/ieee802.15.4-tap */
void
ieee802_15_4_tap_if_print(netdissect_options *ndo,
                          const struct pcap_pkthdr *h, const u_char *p)
{
	uint8_t version;
	uint16_t length;

	ndo->ndo_protocol = "802.15.4_tap";
	if (h->caplen < 4) {
		nd_print_trunc(ndo);
		ndo->ndo_ll_hdr_len += h->caplen;
		return;
	}

	version = GET_U_1(p);
	length = GET_LE_U_2(p + 2);
	if (version != 0 || length < 4) {
		nd_print_invalid(ndo);
		return;
	}

	if (h->caplen < length) {
		nd_print_trunc(ndo);
		ndo->ndo_ll_hdr_len += h->caplen;
		return;
	}

	ndo->ndo_ll_hdr_len += ieee802_15_4_print(ndo, p+length, h->caplen-length) + length;
}