summaryrefslogtreecommitdiffstats
path: root/drivers/net/ethernet/freescale/gianfar_ethtool.c
blob: 3e1a9c1a67a95ffdaddbcca9739a9e37dee66eac (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
/*
 *  drivers/net/ethernet/freescale/gianfar_ethtool.c
 *
 *  Gianfar Ethernet Driver
 *  Ethtool support for Gianfar Enet
 *  Based on e1000 ethtool support
 *
 *  Author: Andy Fleming
 *  Maintainer: Kumar Gala
 *  Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com>
 *
 *  Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc.
 *
 *  This software may be used and distributed according to
 *  the terms of the GNU Public License, Version 2, incorporated herein
 *  by reference.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/net_tstamp.h>
#include <linux/skbuff.h>
#include <linux/spinlock.h>
#include <linux/mm.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <linux/module.h>
#include <linux/crc32.h>
#include <asm/types.h>
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/phy.h>
#include <linux/sort.h>
#include <linux/if_vlan.h>

#include "gianfar.h"

#define GFAR_MAX_COAL_USECS 0xffff
#define GFAR_MAX_COAL_FRAMES 0xff
static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
			    u64 *buf);
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf);
static int gfar_gcoalesce(struct net_device *dev,
			  struct ethtool_coalesce *cvals);
static int gfar_scoalesce(struct net_device *dev,
			  struct ethtool_coalesce *cvals);
static void gfar_gringparam(struct net_device *dev,
			    struct ethtool_ringparam *rvals);
static int gfar_sringparam(struct net_device *dev,
			   struct ethtool_ringparam *rvals);
static void gfar_gdrvinfo(struct net_device *dev,
			  struct ethtool_drvinfo *drvinfo);

static const char stat_gstrings[][ETH_GSTRING_LEN] = {
	"rx-large-frame-errors",
	"rx-short-frame-errors",
	"rx-non-octet-errors",
	"rx-crc-errors",
	"rx-overrun-errors",
	"rx-busy-errors",
	"rx-babbling-errors",
	"rx-truncated-frames",
	"ethernet-bus-error",
	"tx-babbling-errors",
	"tx-underrun-errors",
	"rx-skb-missing-errors",
	"tx-timeout-errors",
	"tx-rx-64-frames",
	"tx-rx-65-127-frames",
	"tx-rx-128-255-frames",
	"tx-rx-256-511-frames",
	"tx-rx-512-1023-frames",
	"tx-rx-1024-1518-frames",
	"tx-rx-1519-1522-good-vlan",
	"rx-bytes",
	"rx-packets",
	"rx-fcs-errors",
	"receive-multicast-packet",
	"receive-broadcast-packet",
	"rx-control-frame-packets",
	"rx-pause-frame-packets",
	"rx-unknown-op-code",
	"rx-alignment-error",
	"rx-frame-length-error",
	"rx-code-error",
	"rx-carrier-sense-error",
	"rx-undersize-packets",
	"rx-oversize-packets",
	"rx-fragmented-frames",
	"rx-jabber-frames",
	"rx-dropped-frames",
	"tx-byte-counter",
	"tx-packets",
	"tx-multicast-packets",
	"tx-broadcast-packets",
	"tx-pause-control-frames",
	"tx-deferral-packets",
	"tx-excessive-deferral-packets",
	"tx-single-collision-packets",
	"tx-multiple-collision-packets",
	"tx-late-collision-packets",
	"tx-excessive-collision-packets",
	"tx-total-collision",
	"reserved",
	"tx-dropped-frames",
	"tx-jabber-frames",
	"tx-fcs-errors",
	"tx-control-frames",
	"tx-oversize-frames",
	"tx-undersize-frames",
	"tx-fragmented-frames",
};

/* Fill in a buffer with the strings which correspond to the
 * stats */
static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
		memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN);
	else
		memcpy(buf, stat_gstrings,
		       GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN);
}

/* Fill in an array of 64-bit statistics from various sources.
 * This array will be appended to the end of the ethtool_stats
 * structure, and returned to user space
 */
static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy,
			    u64 *buf)
{
	int i;
	struct gfar_private *priv = netdev_priv(dev);
	struct gfar __iomem *regs = priv->gfargrp[0].regs;
	atomic64_t *extra = (atomic64_t *)&priv->extra_stats;

	for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++)
		buf[i] = atomic64_read(&extra[i]);

	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) {
		u32 __iomem *rmon = (u32 __iomem *) &regs->rmon;

		for (; i < GFAR_STATS_LEN; i++, rmon++)
			buf[i] = (u64) gfar_read(rmon);
	}
}

static int gfar_sset_count(struct net_device *dev, int sset)
{
	struct gfar_private *priv = netdev_priv(dev);

	switch (sset) {
	case ETH_SS_STATS:
		if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON)
			return GFAR_STATS_LEN;
		else
			return GFAR_EXTRA_STATS_LEN;
	default:
		return -EOPNOTSUPP;
	}
}

/* Fills in the drvinfo structure with some basic info */
static void gfar_gdrvinfo(struct net_device *dev,
			  struct ethtool_drvinfo *drvinfo)
{
	strlcpy(drvinfo->driver, DRV_NAME, sizeof(drvinfo->driver));
	strlcpy(drvinfo->version, gfar_driver_version,
		sizeof(drvinfo->version));
	strlcpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
	strlcpy(drvinfo->bus_info, "N/A", sizeof(drvinfo->bus_info));
	drvinfo->regdump_len = 0;
	drvinfo->eedump_len = 0;
}


static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;

	if (NULL == phydev)
		return -ENODEV;

	return phy_ethtool_sset(phydev, cmd);
}


/* Return the current settings in the ethtool_cmd structure */
static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;
	struct gfar_priv_rx_q *rx_queue = NULL;
	struct gfar_priv_tx_q *tx_queue = NULL;

	if (NULL == phydev)
		return -ENODEV;
	tx_queue = priv->tx_queue[0];
	rx_queue = priv->rx_queue[0];

	/* etsec-1.7 and older versions have only one txic
	 * and rxic regs although they support multiple queues */
	cmd->maxtxpkt = get_icft_value(tx_queue->txic);
	cmd->maxrxpkt = get_icft_value(rx_queue->rxic);

	return phy_ethtool_gset(phydev, cmd);
}

/* Return the length of the register structure */
static int gfar_reglen(struct net_device *dev)
{
	return sizeof (struct gfar);
}

/* Return a dump of the GFAR register space */
static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs,
			  void *regbuf)
{
	int i;
	struct gfar_private *priv = netdev_priv(dev);
	u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs;
	u32 *buf = (u32 *) regbuf;

	for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++)
		buf[i] = gfar_read(&theregs[i]);
}

/* Convert microseconds to ethernet clock ticks, which changes
 * depending on what speed the controller is running at */
static unsigned int gfar_usecs2ticks(struct gfar_private *priv,
				     unsigned int usecs)
{
	unsigned int count;

	/* The timer is different, depending on the interface speed */
	switch (priv->phydev->speed) {
	case SPEED_1000:
		count = GFAR_GBIT_TIME;
		break;
	case SPEED_100:
		count = GFAR_100_TIME;
		break;
	case SPEED_10:
	default:
		count = GFAR_10_TIME;
		break;
	}

	/* Make sure we return a number greater than 0
	 * if usecs > 0 */
	return (usecs * 1000 + count - 1) / count;
}

/* Convert ethernet clock ticks to microseconds */
static unsigned int gfar_ticks2usecs(struct gfar_private *priv,
				     unsigned int ticks)
{
	unsigned int count;

	/* The timer is different, depending on the interface speed */
	switch (priv->phydev->speed) {
	case SPEED_1000:
		count = GFAR_GBIT_TIME;
		break;
	case SPEED_100:
		count = GFAR_100_TIME;
		break;
	case SPEED_10:
	default:
		count = GFAR_10_TIME;
		break;
	}

	/* Make sure we return a number greater than 0 */
	/* if ticks is > 0 */
	return (ticks * count) / 1000;
}

/* Get the coalescing parameters, and put them in the cvals
 * structure.  */
static int gfar_gcoalesce(struct net_device *dev,
			  struct ethtool_coalesce *cvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct gfar_priv_rx_q *rx_queue = NULL;
	struct gfar_priv_tx_q *tx_queue = NULL;
	unsigned long rxtime;
	unsigned long rxcount;
	unsigned long txtime;
	unsigned long txcount;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
		return -EOPNOTSUPP;

	if (NULL == priv->phydev)
		return -ENODEV;

	rx_queue = priv->rx_queue[0];
	tx_queue = priv->tx_queue[0];

	rxtime  = get_ictt_value(rx_queue->rxic);
	rxcount = get_icft_value(rx_queue->rxic);
	txtime  = get_ictt_value(tx_queue->txic);
	txcount = get_icft_value(tx_queue->txic);
	cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime);
	cvals->rx_max_coalesced_frames = rxcount;

	cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime);
	cvals->tx_max_coalesced_frames = txcount;

	cvals->use_adaptive_rx_coalesce = 0;
	cvals->use_adaptive_tx_coalesce = 0;

	cvals->pkt_rate_low = 0;
	cvals->rx_coalesce_usecs_low = 0;
	cvals->rx_max_coalesced_frames_low = 0;
	cvals->tx_coalesce_usecs_low = 0;
	cvals->tx_max_coalesced_frames_low = 0;

	/* When the packet rate is below pkt_rate_high but above
	 * pkt_rate_low (both measured in packets per second) the
	 * normal {rx,tx}_* coalescing parameters are used.
	 */

	/* When the packet rate is (measured in packets per second)
	 * is above pkt_rate_high, the {rx,tx}_*_high parameters are
	 * used.
	 */
	cvals->pkt_rate_high = 0;
	cvals->rx_coalesce_usecs_high = 0;
	cvals->rx_max_coalesced_frames_high = 0;
	cvals->tx_coalesce_usecs_high = 0;
	cvals->tx_max_coalesced_frames_high = 0;

	/* How often to do adaptive coalescing packet rate sampling,
	 * measured in seconds.  Must not be zero.
	 */
	cvals->rate_sample_interval = 0;

	return 0;
}

/* Change the coalescing values.
 * Both cvals->*_usecs and cvals->*_frames have to be > 0
 * in order for coalescing to be active
 */
static int gfar_scoalesce(struct net_device *dev,
			  struct ethtool_coalesce *cvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	int i, err = 0;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE))
		return -EOPNOTSUPP;

	if (NULL == priv->phydev)
		return -ENODEV;

	/* Check the bounds of the values */
	if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
		netdev_info(dev, "Coalescing is limited to %d microseconds\n",
			    GFAR_MAX_COAL_USECS);
		return -EINVAL;
	}

	if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
		netdev_info(dev, "Coalescing is limited to %d frames\n",
			    GFAR_MAX_COAL_FRAMES);
		return -EINVAL;
	}

	/* Check the bounds of the values */
	if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) {
		netdev_info(dev, "Coalescing is limited to %d microseconds\n",
			    GFAR_MAX_COAL_USECS);
		return -EINVAL;
	}

	if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) {
		netdev_info(dev, "Coalescing is limited to %d frames\n",
			    GFAR_MAX_COAL_FRAMES);
		return -EINVAL;
	}

	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
		cpu_relax();

	/* Set up rx coalescing */
	if ((cvals->rx_coalesce_usecs == 0) ||
	    (cvals->rx_max_coalesced_frames == 0)) {
		for (i = 0; i < priv->num_rx_queues; i++)
			priv->rx_queue[i]->rxcoalescing = 0;
	} else {
		for (i = 0; i < priv->num_rx_queues; i++)
			priv->rx_queue[i]->rxcoalescing = 1;
	}

	for (i = 0; i < priv->num_rx_queues; i++) {
		priv->rx_queue[i]->rxic = mk_ic_value(
			cvals->rx_max_coalesced_frames,
			gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs));
	}

	/* Set up tx coalescing */
	if ((cvals->tx_coalesce_usecs == 0) ||
	    (cvals->tx_max_coalesced_frames == 0)) {
		for (i = 0; i < priv->num_tx_queues; i++)
			priv->tx_queue[i]->txcoalescing = 0;
	} else {
		for (i = 0; i < priv->num_tx_queues; i++)
			priv->tx_queue[i]->txcoalescing = 1;
	}

	for (i = 0; i < priv->num_tx_queues; i++) {
		priv->tx_queue[i]->txic = mk_ic_value(
			cvals->tx_max_coalesced_frames,
			gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs));
	}

	if (dev->flags & IFF_UP) {
		stop_gfar(dev);
		err = startup_gfar(dev);
	} else {
		gfar_mac_reset(priv);
	}

	clear_bit_unlock(GFAR_RESETTING, &priv->state);

	return err;
}

/* Fills in rvals with the current ring parameters.  Currently,
 * rx, rx_mini, and rx_jumbo rings are the same size, as mini and
 * jumbo are ignored by the driver */
static void gfar_gringparam(struct net_device *dev,
			    struct ethtool_ringparam *rvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct gfar_priv_tx_q *tx_queue = NULL;
	struct gfar_priv_rx_q *rx_queue = NULL;

	tx_queue = priv->tx_queue[0];
	rx_queue = priv->rx_queue[0];

	rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE;
	rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE;
	rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE;
	rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE;

	/* Values changeable by the user.  The valid values are
	 * in the range 1 to the "*_max_pending" counterpart above.
	 */
	rvals->rx_pending = rx_queue->rx_ring_size;
	rvals->rx_mini_pending = rx_queue->rx_ring_size;
	rvals->rx_jumbo_pending = rx_queue->rx_ring_size;
	rvals->tx_pending = tx_queue->tx_ring_size;
}

/* Change the current ring parameters, stopping the controller if
 * necessary so that we don't mess things up while we're in motion.
 */
static int gfar_sringparam(struct net_device *dev,
			   struct ethtool_ringparam *rvals)
{
	struct gfar_private *priv = netdev_priv(dev);
	int err = 0, i;

	if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE)
		return -EINVAL;

	if (!is_power_of_2(rvals->rx_pending)) {
		netdev_err(dev, "Ring sizes must be a power of 2\n");
		return -EINVAL;
	}

	if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE)
		return -EINVAL;

	if (!is_power_of_2(rvals->tx_pending)) {
		netdev_err(dev, "Ring sizes must be a power of 2\n");
		return -EINVAL;
	}

	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
		cpu_relax();

	if (dev->flags & IFF_UP)
		stop_gfar(dev);

	/* Change the sizes */
	for (i = 0; i < priv->num_rx_queues; i++)
		priv->rx_queue[i]->rx_ring_size = rvals->rx_pending;

	for (i = 0; i < priv->num_tx_queues; i++)
		priv->tx_queue[i]->tx_ring_size = rvals->tx_pending;

	/* Rebuild the rings with the new size */
	if (dev->flags & IFF_UP)
		err = startup_gfar(dev);

	clear_bit_unlock(GFAR_RESETTING, &priv->state);

	return err;
}

static void gfar_gpauseparam(struct net_device *dev,
			     struct ethtool_pauseparam *epause)
{
	struct gfar_private *priv = netdev_priv(dev);

	epause->autoneg = !!priv->pause_aneg_en;
	epause->rx_pause = !!priv->rx_pause_en;
	epause->tx_pause = !!priv->tx_pause_en;
}

static int gfar_spauseparam(struct net_device *dev,
			    struct ethtool_pauseparam *epause)
{
	struct gfar_private *priv = netdev_priv(dev);
	struct phy_device *phydev = priv->phydev;
	struct gfar __iomem *regs = priv->gfargrp[0].regs;
	u32 oldadv, newadv;

	if (!phydev)
		return -ENODEV;

	if (!(phydev->supported & SUPPORTED_Pause) ||
	    (!(phydev->supported & SUPPORTED_Asym_Pause) &&
	     (epause->rx_pause != epause->tx_pause)))
		return -EINVAL;

	priv->rx_pause_en = priv->tx_pause_en = 0;
	if (epause->rx_pause) {
		priv->rx_pause_en = 1;

		if (epause->tx_pause) {
			priv->tx_pause_en = 1;
			/* FLOW_CTRL_RX & TX */
			newadv = ADVERTISED_Pause;
		} else  /* FLOW_CTLR_RX */
			newadv = ADVERTISED_Pause | ADVERTISED_Asym_Pause;
	} else if (epause->tx_pause) {
		priv->tx_pause_en = 1;
		/* FLOW_CTLR_TX */
		newadv = ADVERTISED_Asym_Pause;
	} else
		newadv = 0;

	if (epause->autoneg)
		priv->pause_aneg_en = 1;
	else
		priv->pause_aneg_en = 0;

	oldadv = phydev->advertising &
		(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
	if (oldadv != newadv) {
		phydev->advertising &=
			~(ADVERTISED_Pause | ADVERTISED_Asym_Pause);
		phydev->advertising |= newadv;
		if (phydev->autoneg)
			/* inform link partner of our
			 * new flow ctrl settings
			 */
			return phy_start_aneg(phydev);

		if (!epause->autoneg) {
			u32 tempval;
			tempval = gfar_read(&regs->maccfg1);
			tempval &= ~(MACCFG1_TX_FLOW | MACCFG1_RX_FLOW);

			priv->tx_actual_en = 0;
			if (priv->tx_pause_en) {
				priv->tx_actual_en = 1;
				tempval |= MACCFG1_TX_FLOW;
			}

			if (priv->rx_pause_en)
				tempval |= MACCFG1_RX_FLOW;
			gfar_write(&regs->maccfg1, tempval);
		}
	}

	return 0;
}

int gfar_set_features(struct net_device *dev, netdev_features_t features)
{
	netdev_features_t changed = dev->features ^ features;
	struct gfar_private *priv = netdev_priv(dev);
	int err = 0;

	if (!(changed & (NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
			 NETIF_F_RXCSUM)))
		return 0;

	while (test_and_set_bit_lock(GFAR_RESETTING, &priv->state))
		cpu_relax();

	dev->features = features;

	if (dev->flags & IFF_UP) {
		/* Now we take down the rings to rebuild them */
		stop_gfar(dev);
		err = startup_gfar(dev);
	} else {
		gfar_mac_reset(priv);
	}

	clear_bit_unlock(GFAR_RESETTING, &priv->state);

	return err;
}

static uint32_t gfar_get_msglevel(struct net_device *dev)
{
	struct gfar_private *priv = netdev_priv(dev);

	return priv->msg_enable;
}

static void gfar_set_msglevel(struct net_device *dev, uint32_t data)
{
	struct gfar_private *priv = netdev_priv(dev);

	priv->msg_enable = data;
}

#ifdef CONFIG_PM
static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) {
		wol->supported = WAKE_MAGIC;
		wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0;
	} else {
		wol->supported = wol->wolopts = 0;
	}
}

static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct gfar_private *priv = netdev_priv(dev);
	unsigned long flags;

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) &&
	    wol->wolopts != 0)
		return -EINVAL;

	if (wol->wolopts & ~WAKE_MAGIC)
		return -EINVAL;

	device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC);

	spin_lock_irqsave(&priv->bflock, flags);
	priv->wol_en =  !!device_may_wakeup(&dev->dev);
	spin_unlock_irqrestore(&priv->bflock, flags);

	return 0;
}
#endif

static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow)
{
	u32 fcr = 0x0, fpr = FPR_FILER_MASK;

	if (ethflow & RXH_L2DA) {
		fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH |
		      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;

		fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH |
		      RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_VLAN) {
		fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH |
		      RQFCR_AND | RQFCR_HASHTBL_0;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_IP_SRC) {
		fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
		      RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & (RXH_IP_DST)) {
		fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH |
		      RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_L3_PROTO) {
		fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH |
		      RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_L4_B_0_1) {
		fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
		      RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

	if (ethflow & RXH_L4_B_2_3) {
		fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH |
		      RQFCR_AND | RQFCR_HASHTBL_0;
		priv->ftp_rqfpr[priv->cur_filer_idx] = fpr;
		priv->ftp_rqfcr[priv->cur_filer_idx] = fcr;
		gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr);
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}
}

static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow,
				       u64 class)
{
	unsigned int last_rule_idx = priv->cur_filer_idx;
	unsigned int cmp_rqfpr;
	unsigned int *local_rqfpr;
	unsigned int *local_rqfcr;
	int i = 0x0, k = 0x0;
	int j = MAX_FILER_IDX, l = 0x0;
	int ret = 1;

	local_rqfpr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
				    GFP_KERNEL);
	local_rqfcr = kmalloc_array(MAX_FILER_IDX + 1, sizeof(unsigned int),
				    GFP_KERNEL);
	if (!local_rqfpr || !local_rqfcr) {
		ret = 0;
		goto err;
	}

	switch (class) {
	case TCP_V4_FLOW:
		cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP;
		break;
	case UDP_V4_FLOW:
		cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP;
		break;
	case TCP_V6_FLOW:
		cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP;
		break;
	case UDP_V6_FLOW:
		cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP;
		break;
	default:
		netdev_err(priv->ndev,
			   "Right now this class is not supported\n");
		ret = 0;
		goto err;
	}

	for (i = 0; i < MAX_FILER_IDX + 1; i++) {
		local_rqfpr[j] = priv->ftp_rqfpr[i];
		local_rqfcr[j] = priv->ftp_rqfcr[i];
		j--;
		if ((priv->ftp_rqfcr[i] ==
		     (RQFCR_PID_PARSE | RQFCR_CLE | RQFCR_AND)) &&
		    (priv->ftp_rqfpr[i] == cmp_rqfpr))
			break;
	}

	if (i == MAX_FILER_IDX + 1) {
		netdev_err(priv->ndev,
			   "No parse rule found, can't create hash rules\n");
		ret = 0;
		goto err;
	}

	/* If a match was found, then it begins the starting of a cluster rule
	 * if it was already programmed, we need to overwrite these rules
	 */
	for (l = i+1; l < MAX_FILER_IDX; l++) {
		if ((priv->ftp_rqfcr[l] & RQFCR_CLE) &&
		    !(priv->ftp_rqfcr[l] & RQFCR_AND)) {
			priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT |
					     RQFCR_HASHTBL_0 | RQFCR_PID_MASK;
			priv->ftp_rqfpr[l] = FPR_FILER_MASK;
			gfar_write_filer(priv, l, priv->ftp_rqfcr[l],
					 priv->ftp_rqfpr[l]);
			break;
		}

		if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) &&
			(priv->ftp_rqfcr[l] & RQFCR_AND))
			continue;
		else {
			local_rqfpr[j] = priv->ftp_rqfpr[l];
			local_rqfcr[j] = priv->ftp_rqfcr[l];
			j--;
		}
	}

	priv->cur_filer_idx = l - 1;
	last_rule_idx = l;

	/* hash rules */
	ethflow_to_filer_rules(priv, ethflow);

	/* Write back the popped out rules again */
	for (k = j+1; k < MAX_FILER_IDX; k++) {
		priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k];
		priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k];
		gfar_write_filer(priv, priv->cur_filer_idx,
				 local_rqfcr[k], local_rqfpr[k]);
		if (!priv->cur_filer_idx)
			break;
		priv->cur_filer_idx = priv->cur_filer_idx - 1;
	}

err:
	kfree(local_rqfcr);
	kfree(local_rqfpr);
	return ret;
}

static int gfar_set_hash_opts(struct gfar_private *priv,
			      struct ethtool_rxnfc *cmd)
{
	/* write the filer rules here */
	if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type))
		return -EINVAL;

	return 0;
}

static int gfar_check_filer_hardware(struct gfar_private *priv)
{
	struct gfar __iomem *regs = priv->gfargrp[0].regs;
	u32 i;

	/* Check if we are in FIFO mode */
	i = gfar_read(&regs->ecntrl);
	i &= ECNTRL_FIFM;
	if (i == ECNTRL_FIFM) {
		netdev_notice(priv->ndev, "Interface in FIFO mode\n");
		i = gfar_read(&regs->rctrl);
		i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM;
		if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) {
			netdev_info(priv->ndev,
				    "Receive Queue Filtering enabled\n");
		} else {
			netdev_warn(priv->ndev,
				    "Receive Queue Filtering disabled\n");
			return -EOPNOTSUPP;
		}
	}
	/* Or in standard mode */
	else {
		i = gfar_read(&regs->rctrl);
		i &= RCTRL_PRSDEP_MASK;
		if (i == RCTRL_PRSDEP_MASK) {
			netdev_info(priv->ndev,
				    "Receive Queue Filtering enabled\n");
		} else {
			netdev_warn(priv->ndev,
				    "Receive Queue Filtering disabled\n");
			return -EOPNOTSUPP;
		}
	}

	/* Sets the properties for arbitrary filer rule
	 * to the first 4 Layer 4 Bytes
	 */
	gfar_write(&regs->rbifx, 0xC0C1C2C3);
	return 0;
}

static int gfar_comp_asc(const void *a, const void *b)
{
	return memcmp(a, b, 4);
}

static int gfar_comp_desc(const void *a, const void *b)
{
	return -memcmp(a, b, 4);
}

static void gfar_swap(void *a, void *b, int size)
{
	u32 *_a = a;
	u32 *_b = b;

	swap(_a[0], _b[0]);
	swap(_a[1], _b[1]);
	swap(_a[2], _b[2]);
	swap(_a[3], _b[3]);
}

/* Write a mask to filer cache */
static void gfar_set_mask(u32 mask, struct filer_table *tab)
{
	tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT;
	tab->fe[tab->index].prop = mask;
	tab->index++;
}

/* Sets parse bits (e.g. IP or TCP) */
static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab)
{
	gfar_set_mask(mask, tab);
	tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE |
				   RQFCR_AND;
	tab->fe[tab->index].prop = value;
	tab->index++;
}

static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag,
				       struct filer_table *tab)
{
	gfar_set_mask(mask, tab);
	tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag;
	tab->fe[tab->index].prop = value;
	tab->index++;
}

/* For setting a tuple of value and mask of type flag
 * Example:
 * IP-Src = 10.0.0.0/255.0.0.0
 * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4
 *
 * Ethtool gives us a value=0 and mask=~0 for don't care a tuple
 * For a don't care mask it gives us a 0
 *
 * The check if don't care and the mask adjustment if mask=0 is done for VLAN
 * and MAC stuff on an upper level (due to missing information on this level).
 * For these guys we can discard them if they are value=0 and mask=0.
 *
 * Further the all masks are one-padded for better hardware efficiency.
 */
static void gfar_set_attribute(u32 value, u32 mask, u32 flag,
			       struct filer_table *tab)
{
	switch (flag) {
		/* 3bit */
	case RQFCR_PID_PRI:
		if (!(value | mask))
			return;
		mask |= RQFCR_PID_PRI_MASK;
		break;
		/* 8bit */
	case RQFCR_PID_L4P:
	case RQFCR_PID_TOS:
		if (!~(mask | RQFCR_PID_L4P_MASK))
			return;
		if (!mask)
			mask = ~0;
		else
			mask |= RQFCR_PID_L4P_MASK;
		break;
		/* 12bit */
	case RQFCR_PID_VID:
		if (!(value | mask))
			return;
		mask |= RQFCR_PID_VID_MASK;
		break;
		/* 16bit */
	case RQFCR_PID_DPT:
	case RQFCR_PID_SPT:
	case RQFCR_PID_ETY:
		if (!~(mask | RQFCR_PID_PORT_MASK))
			return;
		if (!mask)
			mask = ~0;
		else
			mask |= RQFCR_PID_PORT_MASK;
		break;
		/* 24bit */
	case RQFCR_PID_DAH:
	case RQFCR_PID_DAL:
	case RQFCR_PID_SAH:
	case RQFCR_PID_SAL:
		if (!(value | mask))
			return;
		mask |= RQFCR_PID_MAC_MASK;
		break;
		/* for all real 32bit masks */
	default:
		if (!~mask)
			return;
		if (!mask)
			mask = ~0;
		break;
	}
	gfar_set_general_attribute(value, mask, flag, tab);
}

/* Translates value and mask for UDP, TCP or SCTP */
static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value,
			      struct ethtool_tcpip4_spec *mask,
			      struct filer_table *tab)
{
	gfar_set_attribute(be32_to_cpu(value->ip4src),
			   be32_to_cpu(mask->ip4src),
			   RQFCR_PID_SIA, tab);
	gfar_set_attribute(be32_to_cpu(value->ip4dst),
			   be32_to_cpu(mask->ip4dst),
			   RQFCR_PID_DIA, tab);
	gfar_set_attribute(be16_to_cpu(value->pdst),
			   be16_to_cpu(mask->pdst),
			   RQFCR_PID_DPT, tab);
	gfar_set_attribute(be16_to_cpu(value->psrc),
			   be16_to_cpu(mask->psrc),
			   RQFCR_PID_SPT, tab);
	gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
}

/* Translates value and mask for RAW-IP4 */
static void gfar_set_user_ip(struct ethtool_usrip4_spec *value,
			     struct ethtool_usrip4_spec *mask,
			     struct filer_table *tab)
{
	gfar_set_attribute(be32_to_cpu(value->ip4src),
			   be32_to_cpu(mask->ip4src),
			   RQFCR_PID_SIA, tab);
	gfar_set_attribute(be32_to_cpu(value->ip4dst),
			   be32_to_cpu(mask->ip4dst),
			   RQFCR_PID_DIA, tab);
	gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab);
	gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab);
	gfar_set_attribute(be32_to_cpu(value->l4_4_bytes),
			   be32_to_cpu(mask->l4_4_bytes),
			   RQFCR_PID_ARB, tab);

}

/* Translates value and mask for ETHER spec */
static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask,
			   struct filer_table *tab)
{
	u32 upper_temp_mask = 0;
	u32 lower_temp_mask = 0;

	/* Source address */
	if (!is_broadcast_ether_addr(mask->h_source)) {
		if (is_zero_ether_addr(mask->h_source)) {
			upper_temp_mask = 0xFFFFFFFF;
			lower_temp_mask = 0xFFFFFFFF;
		} else {
			upper_temp_mask = mask->h_source[0] << 16 |
					  mask->h_source[1] << 8  |
					  mask->h_source[2];
			lower_temp_mask = mask->h_source[3] << 16 |
					  mask->h_source[4] << 8  |
					  mask->h_source[5];
		}
		/* Upper 24bit */
		gfar_set_attribute(value->h_source[0] << 16 |
				   value->h_source[1] << 8  |
				   value->h_source[2],
				   upper_temp_mask, RQFCR_PID_SAH, tab);
		/* And the same for the lower part */
		gfar_set_attribute(value->h_source[3] << 16 |
				   value->h_source[4] << 8  |
				   value->h_source[5],
				   lower_temp_mask, RQFCR_PID_SAL, tab);
	}
	/* Destination address */
	if (!is_broadcast_ether_addr(mask->h_dest)) {
		/* Special for destination is limited broadcast */
		if ((is_broadcast_ether_addr(value->h_dest) &&
		    is_zero_ether_addr(mask->h_dest))) {
			gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab);
		} else {
			if (is_zero_ether_addr(mask->h_dest)) {
				upper_temp_mask = 0xFFFFFFFF;
				lower_temp_mask = 0xFFFFFFFF;
			} else {
				upper_temp_mask = mask->h_dest[0] << 16 |
						  mask->h_dest[1] << 8  |
						  mask->h_dest[2];
				lower_temp_mask = mask->h_dest[3] << 16 |
						  mask->h_dest[4] << 8  |
						  mask->h_dest[5];
			}

			/* Upper 24bit */
			gfar_set_attribute(value->h_dest[0] << 16 |
					   value->h_dest[1] << 8  |
					   value->h_dest[2],
					   upper_temp_mask, RQFCR_PID_DAH, tab);
			/* And the same for the lower part */
			gfar_set_attribute(value->h_dest[3] << 16 |
					   value->h_dest[4] << 8  |
					   value->h_dest[5],
					   lower_temp_mask, RQFCR_PID_DAL, tab);
		}
	}

	gfar_set_attribute(be16_to_cpu(value->h_proto),
			   be16_to_cpu(mask->h_proto),
			   RQFCR_PID_ETY, tab);
}

static inline u32 vlan_tci_vid(struct ethtool_rx_flow_spec *rule)
{
	return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_VID_MASK;
}

static inline u32 vlan_tci_vidm(struct ethtool_rx_flow_spec *rule)
{
	return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_VID_MASK;
}

static inline u32 vlan_tci_cfi(struct ethtool_rx_flow_spec *rule)
{
	return be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_CFI_MASK;
}

static inline u32 vlan_tci_cfim(struct ethtool_rx_flow_spec *rule)
{
	return be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_CFI_MASK;
}

static inline u32 vlan_tci_prio(struct ethtool_rx_flow_spec *rule)
{
	return (be16_to_cpu(rule->h_ext.vlan_tci) & VLAN_PRIO_MASK) >>
		VLAN_PRIO_SHIFT;
}

static inline u32 vlan_tci_priom(struct ethtool_rx_flow_spec *rule)
{
	return (be16_to_cpu(rule->m_ext.vlan_tci) & VLAN_PRIO_MASK) >>
		VLAN_PRIO_SHIFT;
}

/* Convert a rule to binary filter format of gianfar */
static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule,
				 struct filer_table *tab)
{
	u32 vlan = 0, vlan_mask = 0;
	u32 id = 0, id_mask = 0;
	u32 cfi = 0, cfi_mask = 0;
	u32 prio = 0, prio_mask = 0;
	u32 old_index = tab->index;

	/* Check if vlan is wanted */
	if ((rule->flow_type & FLOW_EXT) &&
	    (rule->m_ext.vlan_tci != cpu_to_be16(0xFFFF))) {
		if (!rule->m_ext.vlan_tci)
			rule->m_ext.vlan_tci = cpu_to_be16(0xFFFF);

		vlan = RQFPR_VLN;
		vlan_mask = RQFPR_VLN;

		/* Separate the fields */
		id = vlan_tci_vid(rule);
		id_mask = vlan_tci_vidm(rule);
		cfi = vlan_tci_cfi(rule);
		cfi_mask = vlan_tci_cfim(rule);
		prio = vlan_tci_prio(rule);
		prio_mask = vlan_tci_priom(rule);

		if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) {
			vlan |= RQFPR_CFI;
			vlan_mask |= RQFPR_CFI;
		} else if (cfi != VLAN_TAG_PRESENT &&
			   cfi_mask == VLAN_TAG_PRESENT) {
			vlan_mask |= RQFPR_CFI;
		}
	}

	switch (rule->flow_type & ~FLOW_EXT) {
	case TCP_V4_FLOW:
		gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan,
				    RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab);
		gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec,
				  &rule->m_u.tcp_ip4_spec, tab);
		break;
	case UDP_V4_FLOW:
		gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan,
				    RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab);
		gfar_set_basic_ip(&rule->h_u.udp_ip4_spec,
				  &rule->m_u.udp_ip4_spec, tab);
		break;
	case SCTP_V4_FLOW:
		gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
				    tab);
		gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab);
		gfar_set_basic_ip((struct ethtool_tcpip4_spec *)&rule->h_u,
				  (struct ethtool_tcpip4_spec *)&rule->m_u,
				  tab);
		break;
	case IP_USER_FLOW:
		gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask,
				    tab);
		gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u,
				 (struct ethtool_usrip4_spec *) &rule->m_u,
				 tab);
		break;
	case ETHER_FLOW:
		if (vlan)
			gfar_set_parse_bits(vlan, vlan_mask, tab);
		gfar_set_ether((struct ethhdr *) &rule->h_u,
			       (struct ethhdr *) &rule->m_u, tab);
		break;
	default:
		return -1;
	}

	/* Set the vlan attributes in the end */
	if (vlan) {
		gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab);
		gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab);
	}

	/* If there has been nothing written till now, it must be a default */
	if (tab->index == old_index) {
		gfar_set_mask(0xFFFFFFFF, tab);
		tab->fe[tab->index].ctrl = 0x20;
		tab->fe[tab->index].prop = 0x0;
		tab->index++;
	}

	/* Remove last AND */
	tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND);

	/* Specify which queue to use or to drop */
	if (rule->ring_cookie == RX_CLS_FLOW_DISC)
		tab->fe[tab->index - 1].ctrl |= RQFCR_RJE;
	else
		tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10);

	/* Only big enough entries can be clustered */
	if (tab->index > (old_index + 2)) {
		tab->fe[old_index + 1].ctrl |= RQFCR_CLE;
		tab->fe[tab->index - 1].ctrl |= RQFCR_CLE;
	}

	/* In rare cases the cache can be full while there is
	 * free space in hw
	 */
	if (tab->index > MAX_FILER_CACHE_IDX - 1)
		return -EBUSY;

	return 0;
}

/* Copy size filer entries */
static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0],
				    struct gfar_filer_entry src[0], s32 size)
{
	while (size > 0) {
		size--;
		dst[size].ctrl = src[size].ctrl;
		dst[size].prop = src[size].prop;
	}
}

/* Delete the contents of the filer-table between start and end
 * and collapse them
 */
static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab)
{
	int length;

	if (end > MAX_FILER_CACHE_IDX || end < begin)
		return -EINVAL;

	end++;
	length = end - begin;

	/* Copy */
	while (end < tab->index) {
		tab->fe[begin].ctrl = tab->fe[end].ctrl;
		tab->fe[begin++].prop = tab->fe[end++].prop;

	}
	/* Fill up with don't cares */
	while (begin < tab->index) {
		tab->fe[begin].ctrl = 0x60;
		tab->fe[begin].prop = 0xFFFFFFFF;
		begin++;
	}

	tab->index -= length;
	return 0;
}

/* Make space on the wanted location */
static int gfar_expand_filer_entries(u32 begin, u32 length,
				     struct filer_table *tab)
{
	if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX ||
	    begin > MAX_FILER_CACHE_IDX)
		return -EINVAL;

	gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]),
				tab->index - length + 1);

	tab->index += length;
	return 0;
}

static int gfar_get_next_cluster_start(int start, struct filer_table *tab)
{
	for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
	     start++) {
		if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
		    (RQFCR_AND | RQFCR_CLE))
			return start;
	}
	return -1;
}

static int gfar_get_next_cluster_end(int start, struct filer_table *tab)
{
	for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1);
	     start++) {
		if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) ==
		    (RQFCR_CLE))
			return start;
	}
	return -1;
}

/* Uses hardwares clustering option to reduce
 * the number of filer table entries
 */
static void gfar_cluster_filer(struct filer_table *tab)
{
	s32 i = -1, j, iend, jend;

	while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) {
		j = i;
		while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) {
			/* The cluster entries self and the previous one
			 * (a mask) must be identical!
			 */
			if (tab->fe[i].ctrl != tab->fe[j].ctrl)
				break;
			if (tab->fe[i].prop != tab->fe[j].prop)
				break;
			if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl)
				break;
			if (tab->fe[i - 1].prop != tab->fe[j - 1].prop)
				break;
			iend = gfar_get_next_cluster_end(i, tab);
			jend = gfar_get_next_cluster_end(j, tab);
			if (jend == -1 || iend == -1)
				break;

			/* First we make some free space, where our cluster
			 * element should be. Then we copy it there and finally
			 * delete in from its old location.
			 */
			if (gfar_expand_filer_entries(iend, (jend - j), tab) ==
			    -EINVAL)
				break;

			gfar_copy_filer_entries(&(tab->fe[iend + 1]),
						&(tab->fe[jend + 1]), jend - j);

			if (gfar_trim_filer_entries(jend - 1,
						    jend + (jend - j),
						    tab) == -EINVAL)
				return;

			/* Mask out cluster bit */
			tab->fe[iend].ctrl &= ~(RQFCR_CLE);
		}
	}
}

/* Swaps the masked bits of a1<>a2 and b1<>b2 */
static void gfar_swap_bits(struct gfar_filer_entry *a1,
			   struct gfar_filer_entry *a2,
			   struct gfar_filer_entry *b1,
			   struct gfar_filer_entry *b2, u32 mask)
{
	u32 temp[4];
	temp[0] = a1->ctrl & mask;
	temp[1] = a2->ctrl & mask;
	temp[2] = b1->ctrl & mask;
	temp[3] = b2->ctrl & mask;

	a1->ctrl &= ~mask;
	a2->ctrl &= ~mask;
	b1->ctrl &= ~mask;
	b2->ctrl &= ~mask;

	a1->ctrl |= temp[1];
	a2->ctrl |= temp[0];
	b1->ctrl |= temp[3];
	b2->ctrl |= temp[2];
}

/* Generate a list consisting of masks values with their start and
 * end of validity and block as indicator for parts belonging
 * together (glued by ANDs) in mask_table
 */
static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table,
				    struct filer_table *tab)
{
	u32 i, and_index = 0, block_index = 1;

	for (i = 0; i < tab->index; i++) {

		/* LSByte of control = 0 sets a mask */
		if (!(tab->fe[i].ctrl & 0xF)) {
			mask_table[and_index].mask = tab->fe[i].prop;
			mask_table[and_index].start = i;
			mask_table[and_index].block = block_index;
			if (and_index >= 1)
				mask_table[and_index - 1].end = i - 1;
			and_index++;
		}
		/* cluster starts and ends will be separated because they should
		 * hold their position
		 */
		if (tab->fe[i].ctrl & RQFCR_CLE)
			block_index++;
		/* A not set AND indicates the end of a depended block */
		if (!(tab->fe[i].ctrl & RQFCR_AND))
			block_index++;
	}

	mask_table[and_index - 1].end = i - 1;

	return and_index;
}

/* Sorts the entries of mask_table by the values of the masks.
 * Important: The 0xFF80 flags of the first and last entry of a
 * block must hold their position (which queue, CLusterEnable, ReJEct,
 * AND)
 */
static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table,
				 struct filer_table *temp_table, u32 and_index)
{
	/* Pointer to compare function (_asc or _desc) */
	int (*gfar_comp)(const void *, const void *);

	u32 i, size = 0, start = 0, prev = 1;
	u32 old_first, old_last, new_first, new_last;

	gfar_comp = &gfar_comp_desc;

	for (i = 0; i < and_index; i++) {
		if (prev != mask_table[i].block) {
			old_first = mask_table[start].start + 1;
			old_last = mask_table[i - 1].end;
			sort(mask_table + start, size,
			     sizeof(struct gfar_mask_entry),
			     gfar_comp, &gfar_swap);

			/* Toggle order for every block. This makes the
			 * thing more efficient!
			 */
			if (gfar_comp == gfar_comp_desc)
				gfar_comp = &gfar_comp_asc;
			else
				gfar_comp = &gfar_comp_desc;

			new_first = mask_table[start].start + 1;
			new_last = mask_table[i - 1].end;

			gfar_swap_bits(&temp_table->fe[new_first],
				       &temp_table->fe[old_first],
				       &temp_table->fe[new_last],
				       &temp_table->fe[old_last],
				       RQFCR_QUEUE | RQFCR_CLE |
				       RQFCR_RJE | RQFCR_AND);

			start = i;
			size = 0;
		}
		size++;
		prev = mask_table[i].block;
	}
}

/* Reduces the number of masks needed in the filer table to save entries
 * This is done by sorting the masks of a depended block. A depended block is
 * identified by gluing ANDs or CLE. The sorting order toggles after every
 * block. Of course entries in scope of a mask must change their location with
 * it.
 */
static int gfar_optimize_filer_masks(struct filer_table *tab)
{
	struct filer_table *temp_table;
	struct gfar_mask_entry *mask_table;

	u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0;
	s32 ret = 0;

	/* We need a copy of the filer table because
	 * we want to change its order
	 */
	temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL);
	if (temp_table == NULL)
		return -ENOMEM;

	mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1,
			     sizeof(struct gfar_mask_entry), GFP_KERNEL);

	if (mask_table == NULL) {
		ret = -ENOMEM;
		goto end;
	}

	and_index = gfar_generate_mask_table(mask_table, tab);

	gfar_sort_mask_table(mask_table, temp_table, and_index);

	/* Now we can copy the data from our duplicated filer table to
	 * the real one in the order the mask table says
	 */
	for (i = 0; i < and_index; i++) {
		size = mask_table[i].end - mask_table[i].start + 1;
		gfar_copy_filer_entries(&(tab->fe[j]),
				&(temp_table->fe[mask_table[i].start]), size);
		j += size;
	}

	/* And finally we just have to check for duplicated masks and drop the
	 * second ones
	 */
	for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
		if (tab->fe[i].ctrl == 0x80) {
			previous_mask = i++;
			break;
		}
	}
	for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) {
		if (tab->fe[i].ctrl == 0x80) {
			if (tab->fe[i].prop == tab->fe[previous_mask].prop) {
				/* Two identical ones found!
				 * So drop the second one!
				 */
				gfar_trim_filer_entries(i, i, tab);
			} else
				/* Not identical! */
				previous_mask = i;
		}
	}

	kfree(mask_table);
end:	kfree(temp_table);
	return ret;
}

/* Write the bit-pattern from software's buffer to hardware registers */
static int gfar_write_filer_table(struct gfar_private *priv,
				  struct filer_table *tab)
{
	u32 i = 0;
	if (tab->index > MAX_FILER_IDX - 1)
		return -EBUSY;

	/* Fill regular entries */
	for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl);
	     i++)
		gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop);
	/* Fill the rest with fall-troughs */
	for (; i < MAX_FILER_IDX - 1; i++)
		gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF);
	/* Last entry must be default accept
	 * because that's what people expect
	 */
	gfar_write_filer(priv, i, 0x20, 0x0);

	return 0;
}

static int gfar_check_capability(struct ethtool_rx_flow_spec *flow,
				 struct gfar_private *priv)
{

	if (flow->flow_type & FLOW_EXT)	{
		if (~flow->m_ext.data[0] || ~flow->m_ext.data[1])
			netdev_warn(priv->ndev,
				    "User-specific data not supported!\n");
		if (~flow->m_ext.vlan_etype)
			netdev_warn(priv->ndev,
				    "VLAN-etype not supported!\n");
	}
	if (flow->flow_type == IP_USER_FLOW)
		if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4)
			netdev_warn(priv->ndev,
				    "IP-Version differing from IPv4 not supported!\n");

	return 0;
}

static int gfar_process_filer_changes(struct gfar_private *priv)
{
	struct ethtool_flow_spec_container *j;
	struct filer_table *tab;
	s32 i = 0;
	s32 ret = 0;

	/* So index is set to zero, too! */
	tab = kzalloc(sizeof(*tab), GFP_KERNEL);
	if (tab == NULL)
		return -ENOMEM;

	/* Now convert the existing filer data from flow_spec into
	 * filer tables binary format
	 */
	list_for_each_entry(j, &priv->rx_list.list, list) {
		ret = gfar_convert_to_filer(&j->fs, tab);
		if (ret == -EBUSY) {
			netdev_err(priv->ndev,
				   "Rule not added: No free space!\n");
			goto end;
		}
		if (ret == -1) {
			netdev_err(priv->ndev,
				   "Rule not added: Unsupported Flow-type!\n");
			goto end;
		}
	}

	i = tab->index;

	/* Optimizations to save entries */
	gfar_cluster_filer(tab);
	gfar_optimize_filer_masks(tab);

	pr_debug("\tSummary:\n"
		 "\tData on hardware: %d\n"
		 "\tCompression rate: %d%%\n",
		 tab->index, 100 - (100 * tab->index) / i);

	/* Write everything to hardware */
	ret = gfar_write_filer_table(priv, tab);
	if (ret == -EBUSY) {
		netdev_err(priv->ndev, "Rule not added: No free space!\n");
		goto end;
	}

end:
	kfree(tab);
	return ret;
}

static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow)
{
	u32 i = 0;

	for (i = 0; i < sizeof(flow->m_u); i++)
		flow->m_u.hdata[i] ^= 0xFF;

	flow->m_ext.vlan_etype ^= cpu_to_be16(0xFFFF);
	flow->m_ext.vlan_tci ^= cpu_to_be16(0xFFFF);
	flow->m_ext.data[0] ^= cpu_to_be32(~0);
	flow->m_ext.data[1] ^= cpu_to_be32(~0);
}

static int gfar_add_cls(struct gfar_private *priv,
			struct ethtool_rx_flow_spec *flow)
{
	struct ethtool_flow_spec_container *temp, *comp;
	int ret = 0;

	temp = kmalloc(sizeof(*temp), GFP_KERNEL);
	if (temp == NULL)
		return -ENOMEM;
	memcpy(&temp->fs, flow, sizeof(temp->fs));

	gfar_invert_masks(&temp->fs);
	ret = gfar_check_capability(&temp->fs, priv);
	if (ret)
		goto clean_mem;
	/* Link in the new element at the right @location */
	if (list_empty(&priv->rx_list.list)) {
		ret = gfar_check_filer_hardware(priv);
		if (ret != 0)
			goto clean_mem;
		list_add(&temp->list, &priv->rx_list.list);
		goto process;
	} else {
		list_for_each_entry(comp, &priv->rx_list.list, list) {
			if (comp->fs.location > flow->location) {
				list_add_tail(&temp->list, &comp->list);
				goto process;
			}
			if (comp->fs.location == flow->location) {
				netdev_err(priv->ndev,
					   "Rule not added: ID %d not free!\n",
					   flow->location);
				ret = -EBUSY;
				goto clean_mem;
			}
		}
		list_add_tail(&temp->list, &priv->rx_list.list);
	}

process:
	ret = gfar_process_filer_changes(priv);
	if (ret)
		goto clean_list;
	priv->rx_list.count++;
	return ret;

clean_list:
	list_del(&temp->list);
clean_mem:
	kfree(temp);
	return ret;
}

static int gfar_del_cls(struct gfar_private *priv, u32 loc)
{
	struct ethtool_flow_spec_container *comp;
	u32 ret = -EINVAL;

	if (list_empty(&priv->rx_list.list))
		return ret;

	list_for_each_entry(comp, &priv->rx_list.list, list) {
		if (comp->fs.location == loc) {
			list_del(&comp->list);
			kfree(comp);
			priv->rx_list.count--;
			gfar_process_filer_changes(priv);
			ret = 0;
			break;
		}
	}

	return ret;
}

static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd)
{
	struct ethtool_flow_spec_container *comp;
	u32 ret = -EINVAL;

	list_for_each_entry(comp, &priv->rx_list.list, list) {
		if (comp->fs.location == cmd->fs.location) {
			memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs));
			gfar_invert_masks(&cmd->fs);
			ret = 0;
			break;
		}
	}

	return ret;
}

static int gfar_get_cls_all(struct gfar_private *priv,
			    struct ethtool_rxnfc *cmd, u32 *rule_locs)
{
	struct ethtool_flow_spec_container *comp;
	u32 i = 0;

	list_for_each_entry(comp, &priv->rx_list.list, list) {
		if (i == cmd->rule_cnt)
			return -EMSGSIZE;
		rule_locs[i] = comp->fs.location;
		i++;
	}

	cmd->data = MAX_FILER_IDX;
	cmd->rule_cnt = i;

	return 0;
}

static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
{
	struct gfar_private *priv = netdev_priv(dev);
	int ret = 0;

	if (test_bit(GFAR_RESETTING, &priv->state))
		return -EBUSY;

	mutex_lock(&priv->rx_queue_access);

	switch (cmd->cmd) {
	case ETHTOOL_SRXFH:
		ret = gfar_set_hash_opts(priv, cmd);
		break;
	case ETHTOOL_SRXCLSRLINS:
		if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC &&
		     cmd->fs.ring_cookie >= priv->num_rx_queues) ||
		    cmd->fs.location >= MAX_FILER_IDX) {
			ret = -EINVAL;
			break;
		}
		ret = gfar_add_cls(priv, &cmd->fs);
		break;
	case ETHTOOL_SRXCLSRLDEL:
		ret = gfar_del_cls(priv, cmd->fs.location);
		break;
	default:
		ret = -EINVAL;
	}

	mutex_unlock(&priv->rx_queue_access);

	return ret;
}

static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
			u32 *rule_locs)
{
	struct gfar_private *priv = netdev_priv(dev);
	int ret = 0;

	switch (cmd->cmd) {
	case ETHTOOL_GRXRINGS:
		cmd->data = priv->num_rx_queues;
		break;
	case ETHTOOL_GRXCLSRLCNT:
		cmd->rule_cnt = priv->rx_list.count;
		break;
	case ETHTOOL_GRXCLSRULE:
		ret = gfar_get_cls(priv, cmd);
		break;
	case ETHTOOL_GRXCLSRLALL:
		ret = gfar_get_cls_all(priv, cmd, rule_locs);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

int gfar_phc_index = -1;
EXPORT_SYMBOL(gfar_phc_index);

static int gfar_get_ts_info(struct net_device *dev,
			    struct ethtool_ts_info *info)
{
	struct gfar_private *priv = netdev_priv(dev);

	if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_TIMER)) {
		info->so_timestamping = SOF_TIMESTAMPING_RX_SOFTWARE |
					SOF_TIMESTAMPING_SOFTWARE;
		info->phc_index = -1;
		return 0;
	}
	info->so_timestamping = SOF_TIMESTAMPING_TX_HARDWARE |
				SOF_TIMESTAMPING_RX_HARDWARE |
				SOF_TIMESTAMPING_RAW_HARDWARE;
	info->phc_index = gfar_phc_index;
	info->tx_types = (1 << HWTSTAMP_TX_OFF) |
			 (1 << HWTSTAMP_TX_ON);
	info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
			   (1 << HWTSTAMP_FILTER_ALL);
	return 0;
}

const struct ethtool_ops gfar_ethtool_ops = {
	.get_settings = gfar_gsettings,
	.set_settings = gfar_ssettings,
	.get_drvinfo = gfar_gdrvinfo,
	.get_regs_len = gfar_reglen,
	.get_regs = gfar_get_regs,
	.get_link = ethtool_op_get_link,
	.get_coalesce = gfar_gcoalesce,
	.set_coalesce = gfar_scoalesce,
	.get_ringparam = gfar_gringparam,
	.set_ringparam = gfar_sringparam,
	.get_pauseparam = gfar_gpauseparam,
	.set_pauseparam = gfar_spauseparam,
	.get_strings = gfar_gstrings,
	.get_sset_count = gfar_sset_count,
	.get_ethtool_stats = gfar_fill_stats,
	.get_msglevel = gfar_get_msglevel,
	.set_msglevel = gfar_set_msglevel,
#ifdef CONFIG_PM
	.get_wol = gfar_get_wol,
	.set_wol = gfar_set_wol,
#endif
	.set_rxnfc = gfar_set_nfc,
	.get_rxnfc = gfar_get_nfc,
	.get_ts_info = gfar_get_ts_info,
};
OpenPOWER on IntegriCloud