aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/s390/net/qeth_l2_main.c
blob: 0ea0869120cf4762db9223af4ddd8e78f6f3a1db (plain) (blame)
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
/*
 *    Copyright IBM Corp. 2007, 2009
 *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
 *		 Frank Pavlic <fpavlic@de.ibm.com>,
 *		 Thomas Spatzier <tspat@de.ibm.com>,
 *		 Frank Blaschka <frank.blaschka@de.ibm.com>
 */

#define KMSG_COMPONENT "qeth"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/etherdevice.h>
#include <linux/mii.h>
#include <linux/ip.h>
#include <linux/list.h>

#include "qeth_core.h"
#include "qeth_l2.h"

static int qeth_l2_set_offline(struct ccwgroup_device *);
static int qeth_l2_stop(struct net_device *);
static int qeth_l2_send_delmac(struct qeth_card *, __u8 *);
static int qeth_l2_send_setdelmac(struct qeth_card *, __u8 *,
			   enum qeth_ipa_cmds);
static void qeth_l2_set_multicast_list(struct net_device *);
static int qeth_l2_recover(void *);
static void qeth_bridgeport_query_support(struct qeth_card *card);
static void qeth_bridge_state_change(struct qeth_card *card,
					struct qeth_ipa_cmd *cmd);
static void qeth_bridge_host_event(struct qeth_card *card,
					struct qeth_ipa_cmd *cmd);

static int qeth_l2_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
	struct qeth_card *card = dev->ml_priv;
	struct mii_ioctl_data *mii_data;
	int rc = 0;

	if (!card)
		return -ENODEV;

	if (!qeth_card_hw_is_reachable(card))
		return -ENODEV;

	if (card->info.type == QETH_CARD_TYPE_OSN)
		return -EPERM;

	switch (cmd) {
	case SIOC_QETH_ADP_SET_SNMP_CONTROL:
		rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
		break;
	case SIOC_QETH_GET_CARD_TYPE:
		if ((card->info.type == QETH_CARD_TYPE_OSD ||
		     card->info.type == QETH_CARD_TYPE_OSM ||
		     card->info.type == QETH_CARD_TYPE_OSX) &&
		    !card->info.guestlan)
			return 1;
		return 0;
		break;
	case SIOCGMIIPHY:
		mii_data = if_mii(rq);
		mii_data->phy_id = 0;
		break;
	case SIOCGMIIREG:
		mii_data = if_mii(rq);
		if (mii_data->phy_id != 0)
			rc = -EINVAL;
		else
			mii_data->val_out = qeth_mdio_read(dev,
				mii_data->phy_id, mii_data->reg_num);
		break;
	case SIOC_QETH_QUERY_OAT:
		rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
		break;
	default:
		rc = -EOPNOTSUPP;
	}
	if (rc)
		QETH_CARD_TEXT_(card, 2, "ioce%d", rc);
	return rc;
}

static int qeth_l2_verify_dev(struct net_device *dev)
{
	struct qeth_card *card;
	unsigned long flags;
	int rc = 0;

	read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
	list_for_each_entry(card, &qeth_core_card_list.list, list) {
		if (card->dev == dev) {
			rc = QETH_REAL_CARD;
			break;
		}
	}
	read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);

	return rc;
}

static struct net_device *qeth_l2_netdev_by_devno(unsigned char *read_dev_no)
{
	struct qeth_card *card;
	struct net_device *ndev;
	__u16 temp_dev_no;
	unsigned long flags;
	struct ccw_dev_id read_devid;

	ndev = NULL;
	memcpy(&temp_dev_no, read_dev_no, 2);
	read_lock_irqsave(&qeth_core_card_list.rwlock, flags);
	list_for_each_entry(card, &qeth_core_card_list.list, list) {
		ccw_device_get_id(CARD_RDEV(card), &read_devid);
		if (read_devid.devno == temp_dev_no) {
			ndev = card->dev;
			break;
		}
	}
	read_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
	return ndev;
}

static int qeth_setdel_makerc(struct qeth_card *card, int retcode)
{
	int rc;

	if (retcode)
		QETH_CARD_TEXT_(card, 2, "err%04x", retcode);
	switch (retcode) {
	case IPA_RC_SUCCESS:
		rc = 0;
		break;
	case IPA_RC_L2_UNSUPPORTED_CMD:
		rc = -ENOSYS;
		break;
	case IPA_RC_L2_ADDR_TABLE_FULL:
		rc = -ENOSPC;
		break;
	case IPA_RC_L2_DUP_MAC:
	case IPA_RC_L2_DUP_LAYER3_MAC:
		rc = -EEXIST;
		break;
	case IPA_RC_L2_MAC_NOT_AUTH_BY_HYP:
	case IPA_RC_L2_MAC_NOT_AUTH_BY_ADP:
		rc = -EPERM;
		break;
	case IPA_RC_L2_MAC_NOT_FOUND:
		rc = -ENOENT;
		break;
	case -ENOMEM:
		rc = -ENOMEM;
		break;
	default:
		rc = -EIO;
		break;
	}
	return rc;
}

static int qeth_l2_send_setgroupmac(struct qeth_card *card, __u8 *mac)
{
	int rc;

	QETH_CARD_TEXT(card, 2, "L2Sgmac");
	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
					IPA_CMD_SETGMAC));
	if (rc == -EEXIST)
		QETH_DBF_MESSAGE(2, "Group MAC %pM already existing on %s\n",
			mac, QETH_CARD_IFNAME(card));
	else if (rc)
		QETH_DBF_MESSAGE(2, "Could not set group MAC %pM on %s: %d\n",
			mac, QETH_CARD_IFNAME(card), rc);
	return rc;
}

static int qeth_l2_send_delgroupmac(struct qeth_card *card, __u8 *mac)
{
	int rc;

	QETH_CARD_TEXT(card, 2, "L2Dgmac");
	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
					IPA_CMD_DELGMAC));
	if (rc)
		QETH_DBF_MESSAGE(2,
			"Could not delete group MAC %pM on %s: %d\n",
			mac, QETH_CARD_IFNAME(card), rc);
	return rc;
}

static void qeth_l2_add_mc(struct qeth_card *card, __u8 *mac, int vmac)
{
	struct qeth_mc_mac *mc;
	int rc;

	mc = kmalloc(sizeof(struct qeth_mc_mac), GFP_ATOMIC);

	if (!mc)
		return;

	memcpy(mc->mc_addr, mac, OSA_ADDR_LEN);
	mc->mc_addrlen = OSA_ADDR_LEN;
	mc->is_vmac = vmac;

	if (vmac) {
		rc = qeth_setdel_makerc(card,
			qeth_l2_send_setdelmac(card, mac, IPA_CMD_SETVMAC));
	} else {
		rc = qeth_setdel_makerc(card,
			qeth_l2_send_setgroupmac(card, mac));
	}

	if (!rc)
		list_add_tail(&mc->list, &card->mc_list);
	else
		kfree(mc);
}

static void qeth_l2_del_all_mc(struct qeth_card *card, int del)
{
	struct qeth_mc_mac *mc, *tmp;

	spin_lock_bh(&card->mclock);
	list_for_each_entry_safe(mc, tmp, &card->mc_list, list) {
		if (del) {
			if (mc->is_vmac)
				qeth_l2_send_setdelmac(card, mc->mc_addr,
					IPA_CMD_DELVMAC);
			else
				qeth_l2_send_delgroupmac(card, mc->mc_addr);
		}
		list_del(&mc->list);
		kfree(mc);
	}
	spin_unlock_bh(&card->mclock);
}

static inline int qeth_l2_get_cast_type(struct qeth_card *card,
			struct sk_buff *skb)
{
	if (card->info.type == QETH_CARD_TYPE_OSN)
		return RTN_UNSPEC;
	if (is_broadcast_ether_addr(skb->data))
		return RTN_BROADCAST;
	if (is_multicast_ether_addr(skb->data))
		return RTN_MULTICAST;
	return RTN_UNSPEC;
}

static void qeth_l2_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
			struct sk_buff *skb, int cast_type)
{
	struct vlan_ethhdr *veth = (struct vlan_ethhdr *)skb_mac_header(skb);

	memset(hdr, 0, sizeof(struct qeth_hdr));
	hdr->hdr.l2.id = QETH_HEADER_TYPE_LAYER2;

	/* set byte byte 3 to casting flags */
	if (cast_type == RTN_MULTICAST)
		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_MULTICAST;
	else if (cast_type == RTN_BROADCAST)
		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_BROADCAST;
	else
		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_UNICAST;

	hdr->hdr.l2.pkt_length = skb->len-QETH_HEADER_SIZE;
	/* VSWITCH relies on the VLAN
	 * information to be present in
	 * the QDIO header */
	if (veth->h_vlan_proto == __constant_htons(ETH_P_8021Q)) {
		hdr->hdr.l2.flags[2] |= QETH_LAYER2_FLAG_VLAN;
		hdr->hdr.l2.vlan_id = ntohs(veth->h_vlan_TCI);
	}
}

static int qeth_l2_send_setdelvlan_cb(struct qeth_card *card,
			struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd;

	QETH_CARD_TEXT(card, 2, "L2sdvcb");
	cmd = (struct qeth_ipa_cmd *) data;
	if (cmd->hdr.return_code) {
		QETH_DBF_MESSAGE(2, "Error in processing VLAN %i on %s: 0x%x. "
			  "Continuing\n", cmd->data.setdelvlan.vlan_id,
			  QETH_CARD_IFNAME(card), cmd->hdr.return_code);
		QETH_CARD_TEXT_(card, 2, "L2VL%4x", cmd->hdr.command);
		QETH_CARD_TEXT_(card, 2, "err%d", cmd->hdr.return_code);
	}
	return 0;
}

static int qeth_l2_send_setdelvlan(struct qeth_card *card, __u16 i,
				enum qeth_ipa_cmds ipacmd)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_cmd_buffer *iob;

	QETH_CARD_TEXT_(card, 4, "L2sdv%x", ipacmd);
	iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
	if (!iob)
		return -ENOMEM;
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.setdelvlan.vlan_id = i;
	return qeth_send_ipa_cmd(card, iob,
				 qeth_l2_send_setdelvlan_cb, NULL);
}

static void qeth_l2_process_vlans(struct qeth_card *card)
{
	struct qeth_vlan_vid *id;
	QETH_CARD_TEXT(card, 3, "L2prcvln");
	spin_lock_bh(&card->vlanlock);
	list_for_each_entry(id, &card->vid_list, list) {
		qeth_l2_send_setdelvlan(card, id->vid, IPA_CMD_SETVLAN);
	}
	spin_unlock_bh(&card->vlanlock);
}

static int qeth_l2_vlan_rx_add_vid(struct net_device *dev,
				   __be16 proto, u16 vid)
{
	struct qeth_card *card = dev->ml_priv;
	struct qeth_vlan_vid *id;
	int rc;

	QETH_CARD_TEXT_(card, 4, "aid:%d", vid);
	if (!vid)
		return 0;
	if (card->info.type == QETH_CARD_TYPE_OSM) {
		QETH_CARD_TEXT(card, 3, "aidOSM");
		return 0;
	}
	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
		QETH_CARD_TEXT(card, 3, "aidREC");
		return 0;
	}
	id = kmalloc(sizeof(struct qeth_vlan_vid), GFP_ATOMIC);
	if (id) {
		id->vid = vid;
		rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_SETVLAN);
		if (rc) {
			kfree(id);
			return rc;
		}
		spin_lock_bh(&card->vlanlock);
		list_add_tail(&id->list, &card->vid_list);
		spin_unlock_bh(&card->vlanlock);
	} else {
		return -ENOMEM;
	}
	return 0;
}

static int qeth_l2_vlan_rx_kill_vid(struct net_device *dev,
				    __be16 proto, u16 vid)
{
	struct qeth_vlan_vid *id, *tmpid = NULL;
	struct qeth_card *card = dev->ml_priv;
	int rc = 0;

	QETH_CARD_TEXT_(card, 4, "kid:%d", vid);
	if (card->info.type == QETH_CARD_TYPE_OSM) {
		QETH_CARD_TEXT(card, 3, "kidOSM");
		return 0;
	}
	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
		QETH_CARD_TEXT(card, 3, "kidREC");
		return 0;
	}
	spin_lock_bh(&card->vlanlock);
	list_for_each_entry(id, &card->vid_list, list) {
		if (id->vid == vid) {
			list_del(&id->list);
			tmpid = id;
			break;
		}
	}
	spin_unlock_bh(&card->vlanlock);
	if (tmpid) {
		rc = qeth_l2_send_setdelvlan(card, vid, IPA_CMD_DELVLAN);
		kfree(tmpid);
	}
	qeth_l2_set_multicast_list(card->dev);
	return rc;
}

static int qeth_l2_stop_card(struct qeth_card *card, int recovery_mode)
{
	int rc = 0;

	QETH_DBF_TEXT(SETUP , 2, "stopcard");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));

	qeth_set_allowed_threads(card, 0, 1);
	if (card->read.state == CH_STATE_UP &&
	    card->write.state == CH_STATE_UP &&
	    (card->state == CARD_STATE_UP)) {
		if (recovery_mode &&
		    card->info.type != QETH_CARD_TYPE_OSN) {
			qeth_l2_stop(card->dev);
		} else {
			rtnl_lock();
			dev_close(card->dev);
			rtnl_unlock();
		}
		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
		card->state = CARD_STATE_SOFTSETUP;
	}
	if (card->state == CARD_STATE_SOFTSETUP) {
		qeth_l2_del_all_mc(card, 0);
		qeth_clear_ipacmd_list(card);
		card->state = CARD_STATE_HARDSETUP;
	}
	if (card->state == CARD_STATE_HARDSETUP) {
		qeth_qdio_clear_card(card, 0);
		qeth_clear_qdio_buffers(card);
		qeth_clear_working_pool_list(card);
		card->state = CARD_STATE_DOWN;
	}
	if (card->state == CARD_STATE_DOWN) {
		qeth_clear_cmd_buffers(&card->read);
		qeth_clear_cmd_buffers(&card->write);
	}
	return rc;
}

static int qeth_l2_process_inbound_buffer(struct qeth_card *card,
				int budget, int *done)
{
	int work_done = 0;
	struct sk_buff *skb;
	struct qeth_hdr *hdr;
	unsigned int len;

	*done = 0;
	WARN_ON_ONCE(!budget);
	while (budget) {
		skb = qeth_core_get_next_skb(card,
			&card->qdio.in_q->bufs[card->rx.b_index],
			&card->rx.b_element, &card->rx.e_offset, &hdr);
		if (!skb) {
			*done = 1;
			break;
		}
		skb->dev = card->dev;
		switch (hdr->hdr.l2.id) {
		case QETH_HEADER_TYPE_LAYER2:
			skb->pkt_type = PACKET_HOST;
			skb->protocol = eth_type_trans(skb, skb->dev);
			skb->ip_summed = CHECKSUM_NONE;
			if (skb->protocol == htons(ETH_P_802_2))
				*((__u32 *)skb->cb) = ++card->seqno.pkt_seqno;
			len = skb->len;
			netif_receive_skb(skb);
			break;
		case QETH_HEADER_TYPE_OSN:
			if (card->info.type == QETH_CARD_TYPE_OSN) {
				skb_push(skb, sizeof(struct qeth_hdr));
				skb_copy_to_linear_data(skb, hdr,
						sizeof(struct qeth_hdr));
				len = skb->len;
				card->osn_info.data_cb(skb);
				break;
			}
			/* else unknown */
		default:
			dev_kfree_skb_any(skb);
			QETH_CARD_TEXT(card, 3, "inbunkno");
			QETH_DBF_HEX(CTRL, 3, hdr, QETH_DBF_CTRL_LEN);
			continue;
		}
		work_done++;
		budget--;
		card->stats.rx_packets++;
		card->stats.rx_bytes += len;
	}
	return work_done;
}

static int qeth_l2_poll(struct napi_struct *napi, int budget)
{
	struct qeth_card *card = container_of(napi, struct qeth_card, napi);
	int work_done = 0;
	struct qeth_qdio_buffer *buffer;
	int done;
	int new_budget = budget;

	if (card->options.performance_stats) {
		card->perf_stats.inbound_cnt++;
		card->perf_stats.inbound_start_time = qeth_get_micros();
	}

	while (1) {
		if (!card->rx.b_count) {
			card->rx.qdio_err = 0;
			card->rx.b_count = qdio_get_next_buffers(
				card->data.ccwdev, 0, &card->rx.b_index,
				&card->rx.qdio_err);
			if (card->rx.b_count <= 0) {
				card->rx.b_count = 0;
				break;
			}
			card->rx.b_element =
				&card->qdio.in_q->bufs[card->rx.b_index]
				.buffer->element[0];
			card->rx.e_offset = 0;
		}

		while (card->rx.b_count) {
			buffer = &card->qdio.in_q->bufs[card->rx.b_index];
			if (!(card->rx.qdio_err &&
			    qeth_check_qdio_errors(card, buffer->buffer,
			    card->rx.qdio_err, "qinerr")))
				work_done += qeth_l2_process_inbound_buffer(
					card, new_budget, &done);
			else
				done = 1;

			if (done) {
				if (card->options.performance_stats)
					card->perf_stats.bufs_rec++;
				qeth_put_buffer_pool_entry(card,
					buffer->pool_entry);
				qeth_queue_input_buffer(card, card->rx.b_index);
				card->rx.b_count--;
				if (card->rx.b_count) {
					card->rx.b_index =
						(card->rx.b_index + 1) %
						QDIO_MAX_BUFFERS_PER_Q;
					card->rx.b_element =
						&card->qdio.in_q
						->bufs[card->rx.b_index]
						.buffer->element[0];
					card->rx.e_offset = 0;
				}
			}

			if (work_done >= budget)
				goto out;
			else
				new_budget = budget - work_done;
		}
	}

	napi_complete(napi);
	if (qdio_start_irq(card->data.ccwdev, 0))
		napi_schedule(&card->napi);
out:
	if (card->options.performance_stats)
		card->perf_stats.inbound_time += qeth_get_micros() -
			card->perf_stats.inbound_start_time;
	return work_done;
}

static int qeth_l2_send_setdelmac(struct qeth_card *card, __u8 *mac,
			   enum qeth_ipa_cmds ipacmd)
{
	struct qeth_ipa_cmd *cmd;
	struct qeth_cmd_buffer *iob;

	QETH_CARD_TEXT(card, 2, "L2sdmac");
	iob = qeth_get_ipacmd_buffer(card, ipacmd, QETH_PROT_IPV4);
	if (!iob)
		return -ENOMEM;
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.setdelmac.mac_length = OSA_ADDR_LEN;
	memcpy(&cmd->data.setdelmac.mac, mac, OSA_ADDR_LEN);
	return qeth_send_ipa_cmd(card, iob, NULL, NULL);
}

static int qeth_l2_send_setmac(struct qeth_card *card, __u8 *mac)
{
	int rc;

	QETH_CARD_TEXT(card, 2, "L2Setmac");
	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
					IPA_CMD_SETVMAC));
	if (rc == 0) {
		card->info.mac_bits |= QETH_LAYER2_MAC_REGISTERED;
		memcpy(card->dev->dev_addr, mac, OSA_ADDR_LEN);
		dev_info(&card->gdev->dev,
			"MAC address %pM successfully registered on device %s\n",
			card->dev->dev_addr, card->dev->name);
	} else {
		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
		switch (rc) {
		case -EEXIST:
			dev_warn(&card->gdev->dev,
				"MAC address %pM already exists\n", mac);
			break;
		case -EPERM:
			dev_warn(&card->gdev->dev,
				"MAC address %pM is not authorized\n", mac);
			break;
		}
	}
	return rc;
}

static int qeth_l2_send_delmac(struct qeth_card *card, __u8 *mac)
{
	int rc;

	QETH_CARD_TEXT(card, 2, "L2Delmac");
	if (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))
		return 0;
	rc = qeth_setdel_makerc(card, qeth_l2_send_setdelmac(card, mac,
					IPA_CMD_DELVMAC));
	if (rc == 0)
		card->info.mac_bits &= ~QETH_LAYER2_MAC_REGISTERED;
	return rc;
}

static int qeth_l2_request_initial_mac(struct qeth_card *card)
{
	int rc = 0;
	char vendor_pre[] = {0x02, 0x00, 0x00};

	QETH_DBF_TEXT(SETUP, 2, "doL2init");
	QETH_DBF_TEXT_(SETUP, 2, "doL2%s", CARD_BUS_ID(card));

	if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
		rc = qeth_query_setadapterparms(card);
		if (rc) {
			QETH_DBF_MESSAGE(2, "could not query adapter "
				"parameters on device %s: x%x\n",
				CARD_BUS_ID(card), rc);
		}
	}

	if (card->info.type == QETH_CARD_TYPE_IQD ||
	    card->info.type == QETH_CARD_TYPE_OSM ||
	    card->info.type == QETH_CARD_TYPE_OSX ||
	    card->info.guestlan) {
		rc = qeth_setadpparms_change_macaddr(card);
		if (rc) {
			QETH_DBF_MESSAGE(2, "couldn't get MAC address on "
				"device %s: x%x\n", CARD_BUS_ID(card), rc);
			QETH_DBF_TEXT_(SETUP, 2, "1err%04x", rc);
			return rc;
		}
		QETH_DBF_HEX(SETUP, 2, card->dev->dev_addr, OSA_ADDR_LEN);
	} else {
		eth_random_addr(card->dev->dev_addr);
		memcpy(card->dev->dev_addr, vendor_pre, 3);
	}
	return 0;
}

static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
{
	struct sockaddr *addr = p;
	struct qeth_card *card = dev->ml_priv;
	int rc = 0;

	QETH_CARD_TEXT(card, 3, "setmac");

	if (qeth_l2_verify_dev(dev) != QETH_REAL_CARD) {
		QETH_CARD_TEXT(card, 3, "setmcINV");
		return -EOPNOTSUPP;
	}

	if (card->info.type == QETH_CARD_TYPE_OSN ||
	    card->info.type == QETH_CARD_TYPE_OSM ||
	    card->info.type == QETH_CARD_TYPE_OSX) {
		QETH_CARD_TEXT(card, 3, "setmcTYP");
		return -EOPNOTSUPP;
	}
	QETH_CARD_HEX(card, 3, addr->sa_data, OSA_ADDR_LEN);
	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
		QETH_CARD_TEXT(card, 3, "setmcREC");
		return -ERESTARTSYS;
	}
	rc = qeth_l2_send_delmac(card, &card->dev->dev_addr[0]);
	if (!rc || (rc == -ENOENT))
		rc = qeth_l2_send_setmac(card, addr->sa_data);
	return rc ? -EINVAL : 0;
}

static void qeth_l2_set_multicast_list(struct net_device *dev)
{
	struct qeth_card *card = dev->ml_priv;
	struct netdev_hw_addr *ha;

	if (card->info.type == QETH_CARD_TYPE_OSN)
		return ;

	QETH_CARD_TEXT(card, 3, "setmulti");
	if (qeth_threads_running(card, QETH_RECOVER_THREAD) &&
	    (card->state != CARD_STATE_UP))
		return;
	qeth_l2_del_all_mc(card, 1);
	spin_lock_bh(&card->mclock);
	netdev_for_each_mc_addr(ha, dev)
		qeth_l2_add_mc(card, ha->addr, 0);

	netdev_for_each_uc_addr(ha, dev)
		qeth_l2_add_mc(card, ha->addr, 1);

	spin_unlock_bh(&card->mclock);
	if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
		return;
	qeth_setadp_promisc_mode(card);
}

static int qeth_l2_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
	int rc;
	struct qeth_hdr *hdr = NULL;
	int elements = 0;
	struct qeth_card *card = dev->ml_priv;
	struct sk_buff *new_skb = skb;
	int cast_type = qeth_l2_get_cast_type(card, skb);
	struct qeth_qdio_out_q *queue;
	int tx_bytes = skb->len;
	int data_offset = -1;
	int elements_needed = 0;
	int hd_len = 0;

	if (card->qdio.do_prio_queueing || (cast_type &&
					card->info.is_multicast_different))
		queue = card->qdio.out_qs[qeth_get_priority_queue(card, skb,
					qeth_get_ip_version(skb), cast_type)];
	else
		queue = card->qdio.out_qs[card->qdio.default_out_queue];

	if ((card->state != CARD_STATE_UP) || !card->lan_online) {
		card->stats.tx_carrier_errors++;
		goto tx_drop;
	}

	if ((card->info.type == QETH_CARD_TYPE_OSN) &&
	    (skb->protocol == htons(ETH_P_IPV6)))
		goto tx_drop;

	if (card->options.performance_stats) {
		card->perf_stats.outbound_cnt++;
		card->perf_stats.outbound_start_time = qeth_get_micros();
	}
	netif_stop_queue(dev);

	if (card->info.type == QETH_CARD_TYPE_OSN)
		hdr = (struct qeth_hdr *)skb->data;
	else {
		if (card->info.type == QETH_CARD_TYPE_IQD) {
			new_skb = skb;
			data_offset = ETH_HLEN;
			hd_len = ETH_HLEN;
			hdr = kmem_cache_alloc(qeth_core_header_cache,
						GFP_ATOMIC);
			if (!hdr)
				goto tx_drop;
			elements_needed++;
			skb_reset_mac_header(new_skb);
			qeth_l2_fill_header(card, hdr, new_skb, cast_type);
			hdr->hdr.l2.pkt_length = new_skb->len;
			memcpy(((char *)hdr) + sizeof(struct qeth_hdr),
				skb_mac_header(new_skb), ETH_HLEN);
		} else {
			/* create a clone with writeable headroom */
			new_skb = skb_realloc_headroom(skb,
						sizeof(struct qeth_hdr));
			if (!new_skb)
				goto tx_drop;
			hdr = (struct qeth_hdr *)skb_push(new_skb,
						sizeof(struct qeth_hdr));
			skb_set_mac_header(new_skb, sizeof(struct qeth_hdr));
			qeth_l2_fill_header(card, hdr, new_skb, cast_type);
		}
	}

	elements = qeth_get_elements_no(card, new_skb, elements_needed);
	if (!elements) {
		if (data_offset >= 0)
			kmem_cache_free(qeth_core_header_cache, hdr);
		goto tx_drop;
	}

	if (card->info.type != QETH_CARD_TYPE_IQD) {
		if (qeth_hdr_chk_and_bounce(new_skb, &hdr,
		    sizeof(struct qeth_hdr_layer2)))
			goto tx_drop;
		rc = qeth_do_send_packet(card, queue, new_skb, hdr,
					 elements);
	} else
		rc = qeth_do_send_packet_fast(card, queue, new_skb, hdr,
					elements, data_offset, hd_len);
	if (!rc) {
		card->stats.tx_packets++;
		card->stats.tx_bytes += tx_bytes;
		if (new_skb != skb)
			dev_kfree_skb_any(skb);
		rc = NETDEV_TX_OK;
	} else {
		if (data_offset >= 0)
			kmem_cache_free(qeth_core_header_cache, hdr);

		if (rc == -EBUSY) {
			if (new_skb != skb)
				dev_kfree_skb_any(new_skb);
			return NETDEV_TX_BUSY;
		} else
			goto tx_drop;
	}

	netif_wake_queue(dev);
	if (card->options.performance_stats)
		card->perf_stats.outbound_time += qeth_get_micros() -
			card->perf_stats.outbound_start_time;
	return rc;

tx_drop:
	card->stats.tx_dropped++;
	card->stats.tx_errors++;
	if ((new_skb != skb) && new_skb)
		dev_kfree_skb_any(new_skb);
	dev_kfree_skb_any(skb);
	netif_wake_queue(dev);
	return NETDEV_TX_OK;
}

static int __qeth_l2_open(struct net_device *dev)
{
	struct qeth_card *card = dev->ml_priv;
	int rc = 0;

	QETH_CARD_TEXT(card, 4, "qethopen");
	if (card->state == CARD_STATE_UP)
		return rc;
	if (card->state != CARD_STATE_SOFTSETUP)
		return -ENODEV;

	if ((card->info.type != QETH_CARD_TYPE_OSN) &&
	     (!(card->info.mac_bits & QETH_LAYER2_MAC_REGISTERED))) {
		QETH_CARD_TEXT(card, 4, "nomacadr");
		return -EPERM;
	}
	card->data.state = CH_STATE_UP;
	card->state = CARD_STATE_UP;
	netif_start_queue(dev);

	if (qdio_stop_irq(card->data.ccwdev, 0) >= 0) {
		napi_enable(&card->napi);
		napi_schedule(&card->napi);
	} else
		rc = -EIO;
	return rc;
}

static int qeth_l2_open(struct net_device *dev)
{
	struct qeth_card *card = dev->ml_priv;

	QETH_CARD_TEXT(card, 5, "qethope_");
	if (qeth_wait_for_threads(card, QETH_RECOVER_THREAD)) {
		QETH_CARD_TEXT(card, 3, "openREC");
		return -ERESTARTSYS;
	}
	return __qeth_l2_open(dev);
}

static int qeth_l2_stop(struct net_device *dev)
{
	struct qeth_card *card = dev->ml_priv;

	QETH_CARD_TEXT(card, 4, "qethstop");
	netif_tx_disable(dev);
	if (card->state == CARD_STATE_UP) {
		card->state = CARD_STATE_SOFTSETUP;
		napi_disable(&card->napi);
	}
	return 0;
}

static int qeth_l2_probe_device(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);

	qeth_l2_create_device_attributes(&gdev->dev);
	INIT_LIST_HEAD(&card->vid_list);
	INIT_LIST_HEAD(&card->mc_list);
	card->options.layer2 = 1;
	card->info.hwtrap = 0;
	return 0;
}

static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
{
	struct qeth_card *card = dev_get_drvdata(&cgdev->dev);

	qeth_l2_remove_device_attributes(&cgdev->dev);
	qeth_set_allowed_threads(card, 0, 1);
	wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);

	if (cgdev->state == CCWGROUP_ONLINE)
		qeth_l2_set_offline(cgdev);

	if (card->dev) {
		unregister_netdev(card->dev);
		card->dev = NULL;
	}
	return;
}

static const struct ethtool_ops qeth_l2_ethtool_ops = {
	.get_link = ethtool_op_get_link,
	.get_strings = qeth_core_get_strings,
	.get_ethtool_stats = qeth_core_get_ethtool_stats,
	.get_sset_count = qeth_core_get_sset_count,
	.get_drvinfo = qeth_core_get_drvinfo,
	.get_settings = qeth_core_ethtool_get_settings,
};

static const struct ethtool_ops qeth_l2_osn_ops = {
	.get_strings = qeth_core_get_strings,
	.get_ethtool_stats = qeth_core_get_ethtool_stats,
	.get_sset_count = qeth_core_get_sset_count,
	.get_drvinfo = qeth_core_get_drvinfo,
};

static const struct net_device_ops qeth_l2_netdev_ops = {
	.ndo_open		= qeth_l2_open,
	.ndo_stop		= qeth_l2_stop,
	.ndo_get_stats		= qeth_get_stats,
	.ndo_start_xmit		= qeth_l2_hard_start_xmit,
	.ndo_validate_addr	= eth_validate_addr,
	.ndo_set_rx_mode	= qeth_l2_set_multicast_list,
	.ndo_do_ioctl	   	= qeth_l2_do_ioctl,
	.ndo_set_mac_address    = qeth_l2_set_mac_address,
	.ndo_change_mtu	   	= qeth_change_mtu,
	.ndo_vlan_rx_add_vid	= qeth_l2_vlan_rx_add_vid,
	.ndo_vlan_rx_kill_vid   = qeth_l2_vlan_rx_kill_vid,
	.ndo_tx_timeout	   	= qeth_tx_timeout,
};

static int qeth_l2_setup_netdev(struct qeth_card *card)
{
	switch (card->info.type) {
	case QETH_CARD_TYPE_IQD:
		card->dev = alloc_netdev(0, "hsi%d", NET_NAME_UNKNOWN,
					 ether_setup);
		break;
	case QETH_CARD_TYPE_OSN:
		card->dev = alloc_netdev(0, "osn%d", NET_NAME_UNKNOWN,
					 ether_setup);
		card->dev->flags |= IFF_NOARP;
		break;
	default:
		card->dev = alloc_etherdev(0);
	}

	if (!card->dev)
		return -ENODEV;

	card->dev->ml_priv = card;
	card->dev->watchdog_timeo = QETH_TX_TIMEOUT;
	card->dev->mtu = card->info.initial_mtu;
	card->dev->netdev_ops = &qeth_l2_netdev_ops;
	card->dev->ethtool_ops =
		(card->info.type != QETH_CARD_TYPE_OSN) ?
		&qeth_l2_ethtool_ops : &qeth_l2_osn_ops;
	card->dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
	card->info.broadcast_capable = 1;
	qeth_l2_request_initial_mac(card);
	SET_NETDEV_DEV(card->dev, &card->gdev->dev);
	netif_napi_add(card->dev, &card->napi, qeth_l2_poll, QETH_NAPI_WEIGHT);
	return register_netdev(card->dev);
}

static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	int rc = 0;
	enum qeth_card_states recover_flag;

	mutex_lock(&card->discipline_mutex);
	mutex_lock(&card->conf_mutex);
	QETH_DBF_TEXT(SETUP, 2, "setonlin");
	QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));

	recover_flag = card->state;
	rc = qeth_core_hardsetup_card(card);
	if (rc) {
		QETH_DBF_TEXT_(SETUP, 2, "2err%04x", rc);
		rc = -ENODEV;
		goto out_remove;
	}
	qeth_bridgeport_query_support(card);
	if (card->options.sbp.supported_funcs)
		dev_info(&card->gdev->dev,
		"The device represents a HiperSockets Bridge Capable Port\n");
	qeth_trace_features(card);

	if (!card->dev && qeth_l2_setup_netdev(card)) {
		rc = -ENODEV;
		goto out_remove;
	}

	if (card->info.type != QETH_CARD_TYPE_OSN)
		qeth_l2_send_setmac(card, &card->dev->dev_addr[0]);

	if (qeth_is_diagass_supported(card, QETH_DIAGS_CMD_TRAP)) {
		if (card->info.hwtrap &&
		    qeth_hw_trap(card, QETH_DIAGS_TRAP_ARM))
			card->info.hwtrap = 0;
	} else
		card->info.hwtrap = 0;

	qeth_l2_setup_bridgeport_attrs(card);

	card->state = CARD_STATE_HARDSETUP;
	memset(&card->rx, 0, sizeof(struct qeth_rx));
	qeth_print_status_message(card);

	/* softsetup */
	QETH_DBF_TEXT(SETUP, 2, "softsetp");

	rc = qeth_send_startlan(card);
	if (rc) {
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
		if (rc == 0xe080) {
			dev_warn(&card->gdev->dev,
				"The LAN is offline\n");
			card->lan_online = 0;
			goto contin;
		}
		rc = -ENODEV;
		goto out_remove;
	} else
		card->lan_online = 1;

contin:
	if ((card->info.type == QETH_CARD_TYPE_OSD) ||
	    (card->info.type == QETH_CARD_TYPE_OSX)) {
		/* configure isolation level */
		rc = qeth_set_access_ctrl_online(card, 0);
		if (rc) {
			rc = -ENODEV;
			goto out_remove;
		}
	}

	if (card->info.type != QETH_CARD_TYPE_OSN &&
	    card->info.type != QETH_CARD_TYPE_OSM)
		qeth_l2_process_vlans(card);

	netif_tx_disable(card->dev);

	rc = qeth_init_qdio_queues(card);
	if (rc) {
		QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
		rc = -ENODEV;
		goto out_remove;
	}
	card->state = CARD_STATE_SOFTSETUP;
	if (card->lan_online)
		netif_carrier_on(card->dev);
	else
		netif_carrier_off(card->dev);

	qeth_set_allowed_threads(card, 0xffffffff, 0);
	if (recover_flag == CARD_STATE_RECOVER) {
		if (recovery_mode &&
		    card->info.type != QETH_CARD_TYPE_OSN) {
			__qeth_l2_open(card->dev);
		} else {
			rtnl_lock();
			dev_open(card->dev);
			rtnl_unlock();
		}
		/* this also sets saved unicast addresses */
		qeth_l2_set_multicast_list(card->dev);
	}
	/* let user_space know that device is online */
	kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
	mutex_unlock(&card->conf_mutex);
	mutex_unlock(&card->discipline_mutex);
	return 0;

out_remove:
	qeth_l2_stop_card(card, 0);
	ccw_device_set_offline(CARD_DDEV(card));
	ccw_device_set_offline(CARD_WDEV(card));
	ccw_device_set_offline(CARD_RDEV(card));
	qdio_free(CARD_DDEV(card));
	if (recover_flag == CARD_STATE_RECOVER)
		card->state = CARD_STATE_RECOVER;
	else
		card->state = CARD_STATE_DOWN;
	mutex_unlock(&card->conf_mutex);
	mutex_unlock(&card->discipline_mutex);
	return rc;
}

static int qeth_l2_set_online(struct ccwgroup_device *gdev)
{
	return __qeth_l2_set_online(gdev, 0);
}

static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
					int recovery_mode)
{
	struct qeth_card *card = dev_get_drvdata(&cgdev->dev);
	int rc = 0, rc2 = 0, rc3 = 0;
	enum qeth_card_states recover_flag;

	mutex_lock(&card->discipline_mutex);
	mutex_lock(&card->conf_mutex);
	QETH_DBF_TEXT(SETUP, 3, "setoffl");
	QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));

	if (card->dev && netif_carrier_ok(card->dev))
		netif_carrier_off(card->dev);
	recover_flag = card->state;
	if ((!recovery_mode && card->info.hwtrap) || card->info.hwtrap == 2) {
		qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
		card->info.hwtrap = 1;
	}
	qeth_l2_stop_card(card, recovery_mode);
	rc  = ccw_device_set_offline(CARD_DDEV(card));
	rc2 = ccw_device_set_offline(CARD_WDEV(card));
	rc3 = ccw_device_set_offline(CARD_RDEV(card));
	if (!rc)
		rc = (rc2) ? rc2 : rc3;
	if (rc)
		QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
	qdio_free(CARD_DDEV(card));
	if (recover_flag == CARD_STATE_UP)
		card->state = CARD_STATE_RECOVER;
	/* let user_space know that device is offline */
	kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
	mutex_unlock(&card->conf_mutex);
	mutex_unlock(&card->discipline_mutex);
	return 0;
}

static int qeth_l2_set_offline(struct ccwgroup_device *cgdev)
{
	return __qeth_l2_set_offline(cgdev, 0);
}

static int qeth_l2_recover(void *ptr)
{
	struct qeth_card *card;
	int rc = 0;

	card = (struct qeth_card *) ptr;
	QETH_CARD_TEXT(card, 2, "recover1");
	if (!qeth_do_run_thread(card, QETH_RECOVER_THREAD))
		return 0;
	QETH_CARD_TEXT(card, 2, "recover2");
	dev_warn(&card->gdev->dev,
		"A recovery process has been started for the device\n");
	qeth_set_recovery_task(card);
	__qeth_l2_set_offline(card->gdev, 1);
	rc = __qeth_l2_set_online(card->gdev, 1);
	if (!rc)
		dev_info(&card->gdev->dev,
			"Device successfully recovered!\n");
	else {
		qeth_close_dev(card);
		dev_warn(&card->gdev->dev, "The qeth device driver "
				"failed to recover an error on the device\n");
	}
	qeth_clear_recovery_task(card);
	qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
	qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD);
	return 0;
}

static int __init qeth_l2_init(void)
{
	pr_info("register layer 2 discipline\n");
	return 0;
}

static void __exit qeth_l2_exit(void)
{
	pr_info("unregister layer 2 discipline\n");
}

static void qeth_l2_shutdown(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	qeth_set_allowed_threads(card, 0, 1);
	if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
		qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
	qeth_qdio_clear_card(card, 0);
	qeth_clear_qdio_buffers(card);
	qdio_free(CARD_DDEV(card));
}

static int qeth_l2_pm_suspend(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);

	if (card->dev)
		netif_device_detach(card->dev);
	qeth_set_allowed_threads(card, 0, 1);
	wait_event(card->wait_q, qeth_threads_running(card, 0xffffffff) == 0);
	if (gdev->state == CCWGROUP_OFFLINE)
		return 0;
	if (card->state == CARD_STATE_UP) {
		if (card->info.hwtrap)
			qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
		__qeth_l2_set_offline(card->gdev, 1);
	} else
		__qeth_l2_set_offline(card->gdev, 0);
	return 0;
}

static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
{
	struct qeth_card *card = dev_get_drvdata(&gdev->dev);
	int rc = 0;

	if (gdev->state == CCWGROUP_OFFLINE)
		goto out;

	if (card->state == CARD_STATE_RECOVER) {
		rc = __qeth_l2_set_online(card->gdev, 1);
		if (rc) {
			rtnl_lock();
			dev_close(card->dev);
			rtnl_unlock();
		}
	} else
		rc = __qeth_l2_set_online(card->gdev, 0);
out:
	qeth_set_allowed_threads(card, 0xffffffff, 0);
	if (card->dev)
		netif_device_attach(card->dev);
	if (rc)
		dev_warn(&card->gdev->dev, "The qeth device driver "
			"failed to recover an error on the device\n");
	return rc;
}

/* Returns zero if the command is successfully "consumed" */
static int qeth_l2_control_event(struct qeth_card *card,
					struct qeth_ipa_cmd *cmd)
{
	switch (cmd->hdr.command) {
	case IPA_CMD_SETBRIDGEPORT:
		if (cmd->data.sbp.hdr.command_code ==
				IPA_SBP_BRIDGE_PORT_STATE_CHANGE) {
			qeth_bridge_state_change(card, cmd);
			return 0;
		} else
			return 1;
	case IPA_CMD_ADDRESS_CHANGE_NOTIF:
		qeth_bridge_host_event(card, cmd);
		return 0;
	default:
		return 1;
	}
}

struct qeth_discipline qeth_l2_discipline = {
	.start_poll = qeth_qdio_start_poll,
	.input_handler = (qdio_handler_t *) qeth_qdio_input_handler,
	.output_handler = (qdio_handler_t *) qeth_qdio_output_handler,
	.recover = qeth_l2_recover,
	.setup = qeth_l2_probe_device,
	.remove = qeth_l2_remove_device,
	.set_online = qeth_l2_set_online,
	.set_offline = qeth_l2_set_offline,
	.shutdown = qeth_l2_shutdown,
	.freeze = qeth_l2_pm_suspend,
	.thaw = qeth_l2_pm_resume,
	.restore = qeth_l2_pm_resume,
	.control_event_handler = qeth_l2_control_event,
};
EXPORT_SYMBOL_GPL(qeth_l2_discipline);

static int qeth_osn_send_control_data(struct qeth_card *card, int len,
			   struct qeth_cmd_buffer *iob)
{
	unsigned long flags;
	int rc = 0;

	QETH_CARD_TEXT(card, 5, "osndctrd");

	wait_event(card->wait_q,
		   atomic_cmpxchg(&card->write.irq_pending, 0, 1) == 0);
	qeth_prepare_control_data(card, len, iob);
	QETH_CARD_TEXT(card, 6, "osnoirqp");
	spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
	rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
			      (addr_t) iob, 0, 0);
	spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
	if (rc) {
		QETH_DBF_MESSAGE(2, "qeth_osn_send_control_data: "
			   "ccw_device_start rc = %i\n", rc);
		QETH_CARD_TEXT_(card, 2, " err%d", rc);
		qeth_release_buffer(iob->channel, iob);
		atomic_set(&card->write.irq_pending, 0);
		wake_up(&card->wait_q);
	}
	return rc;
}

static int qeth_osn_send_ipa_cmd(struct qeth_card *card,
			struct qeth_cmd_buffer *iob, int data_len)
{
	u16 s1, s2;

	QETH_CARD_TEXT(card, 4, "osndipa");

	qeth_prepare_ipa_cmd(card, iob, QETH_PROT_OSN2);
	s1 = (u16)(IPA_PDU_HEADER_SIZE + data_len);
	s2 = (u16)data_len;
	memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
	memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
	memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
	memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
	return qeth_osn_send_control_data(card, s1, iob);
}

int qeth_osn_assist(struct net_device *dev, void *data, int data_len)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_card *card;
	int rc;

	if (!dev)
		return -ENODEV;
	card = dev->ml_priv;
	if (!card)
		return -ENODEV;
	QETH_CARD_TEXT(card, 2, "osnsdmc");
	if (!qeth_card_hw_is_reachable(card))
		return -ENODEV;
	iob = qeth_wait_for_buffer(&card->write);
	memcpy(iob->data+IPA_PDU_HEADER_SIZE, data, data_len);
	rc = qeth_osn_send_ipa_cmd(card, iob, data_len);
	return rc;
}
EXPORT_SYMBOL(qeth_osn_assist);

int qeth_osn_register(unsigned char *read_dev_no, struct net_device **dev,
		  int (*assist_cb)(struct net_device *, void *),
		  int (*data_cb)(struct sk_buff *))
{
	struct qeth_card *card;

	*dev = qeth_l2_netdev_by_devno(read_dev_no);
	if (*dev == NULL)
		return -ENODEV;
	card = (*dev)->ml_priv;
	if (!card)
		return -ENODEV;
	QETH_CARD_TEXT(card, 2, "osnreg");
	if ((assist_cb == NULL) || (data_cb == NULL))
		return -EINVAL;
	card->osn_info.assist_cb = assist_cb;
	card->osn_info.data_cb = data_cb;
	return 0;
}
EXPORT_SYMBOL(qeth_osn_register);

void qeth_osn_deregister(struct net_device *dev)
{
	struct qeth_card *card;

	if (!dev)
		return;
	card = dev->ml_priv;
	if (!card)
		return;
	QETH_CARD_TEXT(card, 2, "osndereg");
	card->osn_info.assist_cb = NULL;
	card->osn_info.data_cb = NULL;
	return;
}
EXPORT_SYMBOL(qeth_osn_deregister);

/* SETBRIDGEPORT support, async notifications */

enum qeth_an_event_type {anev_reg_unreg, anev_abort, anev_reset};

/**
 * qeth_bridge_emit_host_event() - bridgeport address change notification
 * @card:  qeth_card structure pointer, for udev events.
 * @evtype:  "normal" register/unregister, or abort, or reset. For abort
 *	      and reset token and addr_lnid are unused and may be NULL.
 * @code:  event bitmask: high order bit 0x80 value 1 means removal of an
 *			  object, 0 - addition of an object.
 *			  0x01 - VLAN, 0x02 - MAC, 0x03 - VLAN and MAC.
 * @token: "network token" structure identifying physical address of the port.
 * @addr_lnid: pointer to structure with MAC address and VLAN ID.
 *
 * This function is called when registrations and deregistrations are
 * reported by the hardware, and also when notifications are enabled -
 * for all currently registered addresses.
 */
static void qeth_bridge_emit_host_event(struct qeth_card *card,
	enum qeth_an_event_type evtype,
	u8 code, struct net_if_token *token, struct mac_addr_lnid *addr_lnid)
{
	char str[7][32];
	char *env[8];
	int i = 0;

	switch (evtype) {
	case anev_reg_unreg:
		snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=%s",
				(code & IPA_ADDR_CHANGE_CODE_REMOVAL)
				? "deregister" : "register");
		env[i] = str[i]; i++;
		if (code & IPA_ADDR_CHANGE_CODE_VLANID) {
			snprintf(str[i], sizeof(str[i]), "VLAN=%d",
				addr_lnid->lnid);
			env[i] = str[i]; i++;
		}
		if (code & IPA_ADDR_CHANGE_CODE_MACADDR) {
			snprintf(str[i], sizeof(str[i]), "MAC=%pM6",
				&addr_lnid->mac);
			env[i] = str[i]; i++;
		}
		snprintf(str[i], sizeof(str[i]), "NTOK_BUSID=%x.%x.%04x",
			token->cssid, token->ssid, token->devnum);
		env[i] = str[i]; i++;
		snprintf(str[i], sizeof(str[i]), "NTOK_IID=%02x", token->iid);
		env[i] = str[i]; i++;
		snprintf(str[i], sizeof(str[i]), "NTOK_CHPID=%02x",
				token->chpid);
		env[i] = str[i]; i++;
		snprintf(str[i], sizeof(str[i]), "NTOK_CHID=%04x", token->chid);
		env[i] = str[i]; i++;
		break;
	case anev_abort:
		snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=abort");
		env[i] = str[i]; i++;
		break;
	case anev_reset:
		snprintf(str[i], sizeof(str[i]), "BRIDGEDHOST=reset");
		env[i] = str[i]; i++;
		break;
	}
	env[i] = NULL;
	kobject_uevent_env(&card->gdev->dev.kobj, KOBJ_CHANGE, env);
}

struct qeth_bridge_state_data {
	struct work_struct worker;
	struct qeth_card *card;
	struct qeth_sbp_state_change qports;
};

static void qeth_bridge_state_change_worker(struct work_struct *work)
{
	struct qeth_bridge_state_data *data =
		container_of(work, struct qeth_bridge_state_data, worker);
	/* We are only interested in the first entry - local port */
	struct qeth_sbp_port_entry *entry = &data->qports.entry[0];
	char env_locrem[32];
	char env_role[32];
	char env_state[32];
	char *env[] = {
		env_locrem,
		env_role,
		env_state,
		NULL
	};

	/* Role should not change by itself, but if it did, */
	/* information from the hardware is authoritative.  */
	mutex_lock(&data->card->conf_mutex);
	data->card->options.sbp.role = entry->role;
	mutex_unlock(&data->card->conf_mutex);

	snprintf(env_locrem, sizeof(env_locrem), "BRIDGEPORT=statechange");
	snprintf(env_role, sizeof(env_role), "ROLE=%s",
		(entry->role == QETH_SBP_ROLE_NONE) ? "none" :
		(entry->role == QETH_SBP_ROLE_PRIMARY) ? "primary" :
		(entry->role == QETH_SBP_ROLE_SECONDARY) ? "secondary" :
		"<INVALID>");
	snprintf(env_state, sizeof(env_state), "STATE=%s",
		(entry->state == QETH_SBP_STATE_INACTIVE) ? "inactive" :
		(entry->state == QETH_SBP_STATE_STANDBY) ? "standby" :
		(entry->state == QETH_SBP_STATE_ACTIVE) ? "active" :
		"<INVALID>");
	kobject_uevent_env(&data->card->gdev->dev.kobj,
				KOBJ_CHANGE, env);
	kfree(data);
}

static void qeth_bridge_state_change(struct qeth_card *card,
					struct qeth_ipa_cmd *cmd)
{
	struct qeth_sbp_state_change *qports =
		 &cmd->data.sbp.data.state_change;
	struct qeth_bridge_state_data *data;
	int extrasize;

	QETH_CARD_TEXT(card, 2, "brstchng");
	if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
		QETH_CARD_TEXT_(card, 2, "BPsz%04x", qports->entry_length);
		return;
	}
	extrasize = sizeof(struct qeth_sbp_port_entry) * qports->num_entries;
	data = kzalloc(sizeof(struct qeth_bridge_state_data) + extrasize,
		GFP_ATOMIC);
	if (!data) {
		QETH_CARD_TEXT(card, 2, "BPSalloc");
		return;
	}
	INIT_WORK(&data->worker, qeth_bridge_state_change_worker);
	data->card = card;
	memcpy(&data->qports, qports,
			sizeof(struct qeth_sbp_state_change) + extrasize);
	queue_work(qeth_wq, &data->worker);
}

struct qeth_bridge_host_data {
	struct work_struct worker;
	struct qeth_card *card;
	struct qeth_ipacmd_addr_change hostevs;
};

static void qeth_bridge_host_event_worker(struct work_struct *work)
{
	struct qeth_bridge_host_data *data =
		container_of(work, struct qeth_bridge_host_data, worker);
	int i;

	if (data->hostevs.lost_event_mask) {
		dev_info(&data->card->gdev->dev,
"Address notification from the HiperSockets Bridge Port stopped %s (%s)\n",
			data->card->dev->name,
			(data->hostevs.lost_event_mask == 0x01)
			? "Overflow"
			: (data->hostevs.lost_event_mask == 0x02)
			? "Bridge port state change"
			: "Unknown reason");
		mutex_lock(&data->card->conf_mutex);
		data->card->options.sbp.hostnotification = 0;
		mutex_unlock(&data->card->conf_mutex);
		qeth_bridge_emit_host_event(data->card, anev_abort,
			0, NULL, NULL);
	} else
		for (i = 0; i < data->hostevs.num_entries; i++) {
			struct qeth_ipacmd_addr_change_entry *entry =
					&data->hostevs.entry[i];
			qeth_bridge_emit_host_event(data->card,
					anev_reg_unreg,
					entry->change_code,
					&entry->token, &entry->addr_lnid);
		}
	kfree(data);
}

static void qeth_bridge_host_event(struct qeth_card *card,
					struct qeth_ipa_cmd *cmd)
{
	struct qeth_ipacmd_addr_change *hostevs =
		 &cmd->data.addrchange;
	struct qeth_bridge_host_data *data;
	int extrasize;

	QETH_CARD_TEXT(card, 2, "brhostev");
	if (cmd->hdr.return_code != 0x0000) {
		if (cmd->hdr.return_code == 0x0010) {
			if (hostevs->lost_event_mask == 0x00)
				hostevs->lost_event_mask = 0xff;
		} else {
			QETH_CARD_TEXT_(card, 2, "BPHe%04x",
				cmd->hdr.return_code);
			return;
		}
	}
	extrasize = sizeof(struct qeth_ipacmd_addr_change_entry) *
						hostevs->num_entries;
	data = kzalloc(sizeof(struct qeth_bridge_host_data) + extrasize,
		GFP_ATOMIC);
	if (!data) {
		QETH_CARD_TEXT(card, 2, "BPHalloc");
		return;
	}
	INIT_WORK(&data->worker, qeth_bridge_host_event_worker);
	data->card = card;
	memcpy(&data->hostevs, hostevs,
			sizeof(struct qeth_ipacmd_addr_change) + extrasize);
	queue_work(qeth_wq, &data->worker);
}

/* SETBRIDGEPORT support; sending commands */

struct _qeth_sbp_cbctl {
	u16 ipa_rc;
	u16 cmd_rc;
	union {
		u32 supported;
		struct {
			enum qeth_sbp_roles *role;
			enum qeth_sbp_states *state;
		} qports;
	} data;
};

/**
 * qeth_bridgeport_makerc() - derive "traditional" error from hardware codes.
 * @card:		      qeth_card structure pointer, for debug messages.
 * @cbctl:		      state structure with hardware return codes.
 * @setcmd:		      IPA command code
 *
 * Returns negative errno-compatible error indication or 0 on success.
 */
static int qeth_bridgeport_makerc(struct qeth_card *card,
	struct _qeth_sbp_cbctl *cbctl, enum qeth_ipa_sbp_cmd setcmd)
{
	int rc;

	switch (cbctl->ipa_rc) {
	case IPA_RC_SUCCESS:
		switch (cbctl->cmd_rc) {
		case 0x0000:
			rc = 0;
			break;
		case 0x0004:
			rc = -ENOSYS;
			break;
		case 0x000C: /* Not configured as bridge Port */
			rc = -ENODEV; /* maybe not the best code here? */
			dev_err(&card->gdev->dev,
	"The HiperSockets device is not configured as a Bridge Port\n");
			break;
		case 0x0014: /* Another device is Primary */
			switch (setcmd) {
			case IPA_SBP_SET_PRIMARY_BRIDGE_PORT:
				rc = -EEXIST;
				dev_err(&card->gdev->dev,
	"The HiperSockets LAN already has a primary Bridge Port\n");
				break;
			case IPA_SBP_SET_SECONDARY_BRIDGE_PORT:
				rc = -EBUSY;
				dev_err(&card->gdev->dev,
	"The HiperSockets device is already a primary Bridge Port\n");
				break;
			default:
				rc = -EIO;
			}
			break;
		case 0x0018: /* This device is currently Secondary */
			rc = -EBUSY;
			dev_err(&card->gdev->dev,
	"The HiperSockets device is already a secondary Bridge Port\n");
			break;
		case 0x001C: /* Limit for Secondary devices reached */
			rc = -EEXIST;
			dev_err(&card->gdev->dev,
	"The HiperSockets LAN cannot have more secondary Bridge Ports\n");
			break;
		case 0x0024: /* This device is currently Primary */
			rc = -EBUSY;
			dev_err(&card->gdev->dev,
	"The HiperSockets device is already a primary Bridge Port\n");
			break;
		case 0x0020: /* Not authorized by zManager */
			rc = -EACCES;
			dev_err(&card->gdev->dev,
	"The HiperSockets device is not authorized to be a Bridge Port\n");
			break;
		default:
			rc = -EIO;
		}
		break;
	case IPA_RC_NOTSUPP:
		rc = -ENOSYS;
		break;
	case IPA_RC_UNSUPPORTED_COMMAND:
		rc = -ENOSYS;
		break;
	default:
		rc = -EIO;
	}
	if (rc) {
		QETH_CARD_TEXT_(card, 2, "SBPi%04x", cbctl->ipa_rc);
		QETH_CARD_TEXT_(card, 2, "SBPc%04x", cbctl->cmd_rc);
	}
	return rc;
}

static int qeth_bridgeport_query_support_cb(struct qeth_card *card,
	struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
	struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
	QETH_CARD_TEXT(card, 2, "brqsupcb");
	cbctl->ipa_rc = cmd->hdr.return_code;
	cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
	if ((cbctl->ipa_rc == 0) && (cbctl->cmd_rc == 0)) {
		cbctl->data.supported =
			cmd->data.sbp.data.query_cmds_supp.supported_cmds;
	} else {
		cbctl->data.supported = 0;
	}
	return 0;
}

/**
 * qeth_bridgeport_query_support() - store bitmask of supported subfunctions.
 * @card:			     qeth_card structure pointer.
 *
 * Sets bitmask of supported setbridgeport subfunctions in the qeth_card
 * strucutre: card->options.sbp.supported_funcs.
 */
static void qeth_bridgeport_query_support(struct qeth_card *card)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	struct _qeth_sbp_cbctl cbctl;

	QETH_CARD_TEXT(card, 2, "brqsuppo");
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
	if (!iob)
		return;
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.sbp.hdr.cmdlength =
		sizeof(struct qeth_ipacmd_sbp_hdr) +
		sizeof(struct qeth_sbp_query_cmds_supp);
	cmd->data.sbp.hdr.command_code =
		IPA_SBP_QUERY_COMMANDS_SUPPORTED;
	cmd->data.sbp.hdr.used_total = 1;
	cmd->data.sbp.hdr.seq_no = 1;
	if (qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_support_cb,
							(void *)&cbctl) ||
	    qeth_bridgeport_makerc(card, &cbctl,
					IPA_SBP_QUERY_COMMANDS_SUPPORTED)) {
		/* non-zero makerc signifies failure, and produce messages */
		card->options.sbp.role = QETH_SBP_ROLE_NONE;
		return;
	}
	card->options.sbp.supported_funcs = cbctl.data.supported;
}

static int qeth_bridgeport_query_ports_cb(struct qeth_card *card,
	struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
	struct qeth_sbp_query_ports *qports = &cmd->data.sbp.data.query_ports;
	struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;

	QETH_CARD_TEXT(card, 2, "brqprtcb");
	cbctl->ipa_rc = cmd->hdr.return_code;
	cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
	if ((cbctl->ipa_rc != 0) || (cbctl->cmd_rc != 0))
		return 0;
	if (qports->entry_length != sizeof(struct qeth_sbp_port_entry)) {
		cbctl->cmd_rc = 0xffff;
		QETH_CARD_TEXT_(card, 2, "SBPs%04x", qports->entry_length);
		return 0;
	}
	/* first entry contains the state of the local port */
	if (qports->num_entries > 0) {
		if (cbctl->data.qports.role)
			*cbctl->data.qports.role = qports->entry[0].role;
		if (cbctl->data.qports.state)
			*cbctl->data.qports.state = qports->entry[0].state;
	}
	return 0;
}

/**
 * qeth_bridgeport_query_ports() - query local bridgeport status.
 * @card:			   qeth_card structure pointer.
 * @role:   Role of the port: 0-none, 1-primary, 2-secondary.
 * @state:  State of the port: 0-inactive, 1-standby, 2-active.
 *
 * Returns negative errno-compatible error indication or 0 on success.
 *
 * 'role' and 'state' are not updated in case of hardware operation failure.
 */
int qeth_bridgeport_query_ports(struct qeth_card *card,
	enum qeth_sbp_roles *role, enum qeth_sbp_states *state)
{
	int rc = 0;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	struct _qeth_sbp_cbctl cbctl = {
		.data = {
			.qports = {
				.role = role,
				.state = state,
			},
		},
	};

	QETH_CARD_TEXT(card, 2, "brqports");
	if (!(card->options.sbp.supported_funcs & IPA_SBP_QUERY_BRIDGE_PORTS))
		return -EOPNOTSUPP;
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
	if (!iob)
		return -ENOMEM;
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.sbp.hdr.cmdlength =
		sizeof(struct qeth_ipacmd_sbp_hdr);
	cmd->data.sbp.hdr.command_code =
		IPA_SBP_QUERY_BRIDGE_PORTS;
	cmd->data.sbp.hdr.used_total = 1;
	cmd->data.sbp.hdr.seq_no = 1;
	rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_query_ports_cb,
				(void *)&cbctl);
	if (rc)
		return rc;
	rc = qeth_bridgeport_makerc(card, &cbctl, IPA_SBP_QUERY_BRIDGE_PORTS);
	return rc;
}
EXPORT_SYMBOL_GPL(qeth_bridgeport_query_ports);

static int qeth_bridgeport_set_cb(struct qeth_card *card,
	struct qeth_reply *reply, unsigned long data)
{
	struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
	struct _qeth_sbp_cbctl *cbctl = (struct _qeth_sbp_cbctl *)reply->param;
	QETH_CARD_TEXT(card, 2, "brsetrcb");
	cbctl->ipa_rc = cmd->hdr.return_code;
	cbctl->cmd_rc = cmd->data.sbp.hdr.return_code;
	return 0;
}

/**
 * qeth_bridgeport_setrole() - Assign primary role to the port.
 * @card:		       qeth_card structure pointer.
 * @role:		       Role to assign.
 *
 * Returns negative errno-compatible error indication or 0 on success.
 */
int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
{
	int rc = 0;
	int cmdlength;
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;
	struct _qeth_sbp_cbctl cbctl;
	enum qeth_ipa_sbp_cmd setcmd;

	QETH_CARD_TEXT(card, 2, "brsetrol");
	switch (role) {
	case QETH_SBP_ROLE_NONE:
		setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
		cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
			sizeof(struct qeth_sbp_reset_role);
		break;
	case QETH_SBP_ROLE_PRIMARY:
		setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
		cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
			sizeof(struct qeth_sbp_set_primary);
		break;
	case QETH_SBP_ROLE_SECONDARY:
		setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
		cmdlength =  sizeof(struct qeth_ipacmd_sbp_hdr) +
			sizeof(struct qeth_sbp_set_secondary);
		break;
	default:
		return -EINVAL;
	}
	if (!(card->options.sbp.supported_funcs & setcmd))
		return -EOPNOTSUPP;
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETBRIDGEPORT, 0);
	if (!iob)
		return -ENOMEM;
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.sbp.hdr.cmdlength = cmdlength;
	cmd->data.sbp.hdr.command_code = setcmd;
	cmd->data.sbp.hdr.used_total = 1;
	cmd->data.sbp.hdr.seq_no = 1;
	rc = qeth_send_ipa_cmd(card, iob, qeth_bridgeport_set_cb,
				(void *)&cbctl);
	if (rc)
		return rc;
	rc = qeth_bridgeport_makerc(card, &cbctl, setcmd);
	return rc;
}

/**
 * qeth_anset_makerc() - derive "traditional" error from hardware codes.
 * @card:		      qeth_card structure pointer, for debug messages.
 *
 * Returns negative errno-compatible error indication or 0 on success.
 */
static int qeth_anset_makerc(struct qeth_card *card, int pnso_rc, u16 response)
{
	int rc;

	if (pnso_rc == 0)
		switch (response) {
		case 0x0001:
			rc = 0;
			break;
		case 0x0004:
		case 0x0100:
		case 0x0106:
			rc = -ENOSYS;
			dev_err(&card->gdev->dev,
				"Setting address notification failed\n");
			break;
		case 0x0107:
			rc = -EAGAIN;
			break;
		default:
			rc = -EIO;
		}
	else
		rc = -EIO;

	if (rc) {
		QETH_CARD_TEXT_(card, 2, "SBPp%04x", pnso_rc);
		QETH_CARD_TEXT_(card, 2, "SBPr%04x", response);
	}
	return rc;
}

static void qeth_bridgeport_an_set_cb(void *priv,
		enum qdio_brinfo_entry_type type, void *entry)
{
	struct qeth_card *card = (struct qeth_card *)priv;
	struct qdio_brinfo_entry_l2 *l2entry;
	u8 code;

	if (type != l2_addr_lnid) {
		WARN_ON_ONCE(1);
		return;
	}

	l2entry = (struct qdio_brinfo_entry_l2 *)entry;
	code = IPA_ADDR_CHANGE_CODE_MACADDR;
	if (l2entry->addr_lnid.lnid)
		code |= IPA_ADDR_CHANGE_CODE_VLANID;
	qeth_bridge_emit_host_event(card, anev_reg_unreg, code,
		(struct net_if_token *)&l2entry->nit,
		(struct mac_addr_lnid *)&l2entry->addr_lnid);
}

/**
 * qeth_bridgeport_an_set() - Enable or disable bridgeport address notification
 * @card:		      qeth_card structure pointer.
 * @enable:		      0 - disable, non-zero - enable notifications
 *
 * Returns negative errno-compatible error indication or 0 on success.
 *
 * On enable, emits a series of address notifications udev events for all
 * currently registered hosts.
 */
int qeth_bridgeport_an_set(struct qeth_card *card, int enable)
{
	int rc;
	u16 response;
	struct ccw_device *ddev;
	struct subchannel_id schid;

	if (!card)
		return -EINVAL;
	if (!card->options.sbp.supported_funcs)
		return -EOPNOTSUPP;
	ddev = CARD_DDEV(card);
	ccw_device_get_schid(ddev, &schid);

	if (enable) {
		qeth_bridge_emit_host_event(card, anev_reset, 0, NULL, NULL);
		rc = qdio_pnso_brinfo(schid, 1, &response,
			qeth_bridgeport_an_set_cb, card);
	} else
		rc = qdio_pnso_brinfo(schid, 0, &response, NULL, NULL);
	return qeth_anset_makerc(card, rc, response);
}
EXPORT_SYMBOL_GPL(qeth_bridgeport_an_set);

module_init(qeth_l2_init);
module_exit(qeth_l2_exit);
MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
MODULE_DESCRIPTION("qeth layer 2 discipline");
MODULE_LICENSE("GPL");