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[NET]: Add NETIF_F_GEN_CSUM and NETIF_F_ALL_CSUM
[mirror_ubuntu-zesty-kernel.git] / net / core / ethtool.c
CommitLineData
1da177e4
LT		 1/*
2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
4 *
5 * This file is where we call all the ethtool_ops commands to get
6 * the information ethtool needs. We fall back to calling do_ioctl()
7 * for drivers which haven't been converted to ethtool_ops yet.
8 *
9 * It's GPL, stupid.
10 */
11
12#include <linux/module.h>
13#include <linux/types.h>
4fc268d2 14#include <linux/capability.h>
1da177e4
LT		 15#include <linux/errno.h>
16#include <linux/ethtool.h>
17#include <linux/netdevice.h>
18#include <asm/uaccess.h>
19
20/*
21 * Some useful ethtool_ops methods that're device independent.
22 * If we find that all drivers want to do the same thing here,
23 * we can turn these into dev_() function calls.
24 */
25
26u32 ethtool_op_get_link(struct net_device *dev)
27{
28 return netif_carrier_ok(dev) ? 1 : 0;
29}
30
31u32 ethtool_op_get_tx_csum(struct net_device *dev)
32{
8648b305 33 return (dev->features & NETIF_F_ALL_CSUM) != 0;
1da177e4
LT		 34}
35
36int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
37{
38 if (data)
39 dev->features |= NETIF_F_IP_CSUM;
40 else
41 dev->features &= ~NETIF_F_IP_CSUM;
42
43 return 0;
44}
45
69f6a0fa
JM		 46int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
47{
48 if (data)
49 dev->features |= NETIF_F_HW_CSUM;
50 else
51 dev->features &= ~NETIF_F_HW_CSUM;
52
53 return 0;
54}
1da177e4
LT		 55u32 ethtool_op_get_sg(struct net_device *dev)
56{
57 return (dev->features & NETIF_F_SG) != 0;
58}
59
60int ethtool_op_set_sg(struct net_device *dev, u32 data)
61{
62 if (data)
63 dev->features |= NETIF_F_SG;
64 else
65 dev->features &= ~NETIF_F_SG;
66
67 return 0;
68}
69
70u32 ethtool_op_get_tso(struct net_device *dev)
71{
72 return (dev->features & NETIF_F_TSO) != 0;
73}
74
75int ethtool_op_set_tso(struct net_device *dev, u32 data)
76{
77 if (data)
78 dev->features |= NETIF_F_TSO;
79 else
80 dev->features &= ~NETIF_F_TSO;
81
82 return 0;
83}
84
a6f9a705
JW		 85int ethtool_op_get_perm_addr(struct net_device *dev, struct ethtool_perm_addr *addr, u8 *data)
86{
87 unsigned char len = dev->addr_len;
88 if ( addr->size < len )
89 return -ETOOSMALL;
90
91 addr->size = len;
92 memcpy(data, dev->perm_addr, len);
93 return 0;
94}
95
96
e89e9cf5
AR		 97u32 ethtool_op_get_ufo(struct net_device *dev)
98{
99 return (dev->features & NETIF_F_UFO) != 0;
100}
101
102int ethtool_op_set_ufo(struct net_device *dev, u32 data)
103{
104 if (data)
105 dev->features |= NETIF_F_UFO;
106 else
107 dev->features &= ~NETIF_F_UFO;
108 return 0;
109}
110
1da177e4
LT		 111/* Handlers for each ethtool command */
112
113static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
114{
115 struct ethtool_cmd cmd = { ETHTOOL_GSET };
116 int err;
117
118 if (!dev->ethtool_ops->get_settings)
119 return -EOPNOTSUPP;
120
121 err = dev->ethtool_ops->get_settings(dev, &cmd);
122 if (err < 0)
123 return err;
124
125 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
126 return -EFAULT;
127 return 0;
128}
129
130static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
131{
132 struct ethtool_cmd cmd;
133
134 if (!dev->ethtool_ops->set_settings)
135 return -EOPNOTSUPP;
136
137 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
138 return -EFAULT;
139
140 return dev->ethtool_ops->set_settings(dev, &cmd);
141}
142
143static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
144{
145 struct ethtool_drvinfo info;
146 struct ethtool_ops *ops = dev->ethtool_ops;
147
148 if (!ops->get_drvinfo)
149 return -EOPNOTSUPP;
150
151 memset(&info, 0, sizeof(info));
152 info.cmd = ETHTOOL_GDRVINFO;
153 ops->get_drvinfo(dev, &info);
154
155 if (ops->self_test_count)
156 info.testinfo_len = ops->self_test_count(dev);
157 if (ops->get_stats_count)
158 info.n_stats = ops->get_stats_count(dev);
159 if (ops->get_regs_len)
160 info.regdump_len = ops->get_regs_len(dev);
161 if (ops->get_eeprom_len)
162 info.eedump_len = ops->get_eeprom_len(dev);
163
164 if (copy_to_user(useraddr, &info, sizeof(info)))
165 return -EFAULT;
166 return 0;
167}
168
169static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
170{
171 struct ethtool_regs regs;
172 struct ethtool_ops *ops = dev->ethtool_ops;
173 void *regbuf;
174 int reglen, ret;
175
176 if (!ops->get_regs || !ops->get_regs_len)
177 return -EOPNOTSUPP;
178
179 if (copy_from_user(&regs, useraddr, sizeof(regs)))
180 return -EFAULT;
181
182 reglen = ops->get_regs_len(dev);
183 if (regs.len > reglen)
184 regs.len = reglen;
185
186 regbuf = kmalloc(reglen, GFP_USER);
187 if (!regbuf)
188 return -ENOMEM;
189
190 ops->get_regs(dev, &regs, regbuf);
191
192 ret = -EFAULT;
193 if (copy_to_user(useraddr, &regs, sizeof(regs)))
194 goto out;
195 useraddr += offsetof(struct ethtool_regs, data);
196 if (copy_to_user(useraddr, regbuf, regs.len))
197 goto out;
198 ret = 0;
199
200 out:
201 kfree(regbuf);
202 return ret;
203}
204
205static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
206{
207 struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
208
209 if (!dev->ethtool_ops->get_wol)
210 return -EOPNOTSUPP;
211
212 dev->ethtool_ops->get_wol(dev, &wol);
213
214 if (copy_to_user(useraddr, &wol, sizeof(wol)))
215 return -EFAULT;
216 return 0;
217}
218
219static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
220{
221 struct ethtool_wolinfo wol;
222
223 if (!dev->ethtool_ops->set_wol)
224 return -EOPNOTSUPP;
225
226 if (copy_from_user(&wol, useraddr, sizeof(wol)))
227 return -EFAULT;
228
229 return dev->ethtool_ops->set_wol(dev, &wol);
230}
231
232static int ethtool_get_msglevel(struct net_device *dev, char __user *useraddr)
233{
234 struct ethtool_value edata = { ETHTOOL_GMSGLVL };
235
236 if (!dev->ethtool_ops->get_msglevel)
237 return -EOPNOTSUPP;
238
239 edata.data = dev->ethtool_ops->get_msglevel(dev);
240
241 if (copy_to_user(useraddr, &edata, sizeof(edata)))
242 return -EFAULT;
243 return 0;
244}
245
246static int ethtool_set_msglevel(struct net_device *dev, char __user *useraddr)
247{
248 struct ethtool_value edata;
249
250 if (!dev->ethtool_ops->set_msglevel)
251 return -EOPNOTSUPP;
252
253 if (copy_from_user(&edata, useraddr, sizeof(edata)))
254 return -EFAULT;
255
256 dev->ethtool_ops->set_msglevel(dev, edata.data);
257 return 0;
258}
259
260static int ethtool_nway_reset(struct net_device *dev)
261{
262 if (!dev->ethtool_ops->nway_reset)
263 return -EOPNOTSUPP;
264
265 return dev->ethtool_ops->nway_reset(dev);
266}
267
268static int ethtool_get_link(struct net_device *dev, void __user *useraddr)
269{
270 struct ethtool_value edata = { ETHTOOL_GLINK };
271
272 if (!dev->ethtool_ops->get_link)
273 return -EOPNOTSUPP;
274
275 edata.data = dev->ethtool_ops->get_link(dev);
276
277 if (copy_to_user(useraddr, &edata, sizeof(edata)))
278 return -EFAULT;
279 return 0;
280}
281
282static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
283{
284 struct ethtool_eeprom eeprom;
285 struct ethtool_ops *ops = dev->ethtool_ops;
286 u8 *data;
287 int ret;
288
289 if (!ops->get_eeprom || !ops->get_eeprom_len)
290 return -EOPNOTSUPP;
291
292 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
293 return -EFAULT;
294
295 /* Check for wrap and zero */
296 if (eeprom.offset + eeprom.len <= eeprom.offset)
297 return -EINVAL;
298
299 /* Check for exceeding total eeprom len */
300 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
301 return -EINVAL;
302
303 data = kmalloc(eeprom.len, GFP_USER);
304 if (!data)
305 return -ENOMEM;
306
307 ret = -EFAULT;
308 if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
309 goto out;
310
311 ret = ops->get_eeprom(dev, &eeprom, data);
312 if (ret)
313 goto out;
314
315 ret = -EFAULT;
316 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
317 goto out;
318 if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
319 goto out;
320 ret = 0;
321
322 out:
323 kfree(data);
324 return ret;
325}
326
327static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
328{
329 struct ethtool_eeprom eeprom;
330 struct ethtool_ops *ops = dev->ethtool_ops;
331 u8 *data;
332 int ret;
333
334 if (!ops->set_eeprom || !ops->get_eeprom_len)
335 return -EOPNOTSUPP;
336
337 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
338 return -EFAULT;
339
340 /* Check for wrap and zero */
341 if (eeprom.offset + eeprom.len <= eeprom.offset)
342 return -EINVAL;
343
344 /* Check for exceeding total eeprom len */
345 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
346 return -EINVAL;
347
348 data = kmalloc(eeprom.len, GFP_USER);
349 if (!data)
350 return -ENOMEM;
351
352 ret = -EFAULT;
353 if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
354 goto out;
355
356 ret = ops->set_eeprom(dev, &eeprom, data);
357 if (ret)
358 goto out;
359
360 if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
361 ret = -EFAULT;
362
363 out:
364 kfree(data);
365 return ret;
366}
367
368static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
369{
370 struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE };
371
372 if (!dev->ethtool_ops->get_coalesce)
373 return -EOPNOTSUPP;
374
375 dev->ethtool_ops->get_coalesce(dev, &coalesce);
376
377 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
378 return -EFAULT;
379 return 0;
380}
381
382static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
383{
384 struct ethtool_coalesce coalesce;
385
fa04ae5c 386 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 387 return -EOPNOTSUPP;
388
389 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
390 return -EFAULT;
391
392 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
393}
394
395static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
396{
397 struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM };
398
399 if (!dev->ethtool_ops->get_ringparam)
400 return -EOPNOTSUPP;
401
402 dev->ethtool_ops->get_ringparam(dev, &ringparam);
403
404 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
405 return -EFAULT;
406 return 0;
407}
408
409static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
410{
411 struct ethtool_ringparam ringparam;
412
413 if (!dev->ethtool_ops->set_ringparam)
414 return -EOPNOTSUPP;
415
416 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
417 return -EFAULT;
418
419 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
420}
421
422static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
423{
424 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
425
426 if (!dev->ethtool_ops->get_pauseparam)
427 return -EOPNOTSUPP;
428
429 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
430
431 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
432 return -EFAULT;
433 return 0;
434}
435
436static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
437{
438 struct ethtool_pauseparam pauseparam;
439
440 if (!dev->ethtool_ops->get_pauseparam)
441 return -EOPNOTSUPP;
442
443 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
444 return -EFAULT;
445
446 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
447}
448
449static int ethtool_get_rx_csum(struct net_device *dev, char __user *useraddr)
450{
451 struct ethtool_value edata = { ETHTOOL_GRXCSUM };
452
453 if (!dev->ethtool_ops->get_rx_csum)
454 return -EOPNOTSUPP;
455
456 edata.data = dev->ethtool_ops->get_rx_csum(dev);
457
458 if (copy_to_user(useraddr, &edata, sizeof(edata)))
459 return -EFAULT;
460 return 0;
461}
462
463static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
464{
465 struct ethtool_value edata;
466
467 if (!dev->ethtool_ops->set_rx_csum)
468 return -EOPNOTSUPP;
469
470 if (copy_from_user(&edata, useraddr, sizeof(edata)))
471 return -EFAULT;
472
473 dev->ethtool_ops->set_rx_csum(dev, edata.data);
474 return 0;
475}
476
477static int ethtool_get_tx_csum(struct net_device *dev, char __user *useraddr)
478{
479 struct ethtool_value edata = { ETHTOOL_GTXCSUM };
480
481 if (!dev->ethtool_ops->get_tx_csum)
482 return -EOPNOTSUPP;
483
484 edata.data = dev->ethtool_ops->get_tx_csum(dev);
485
486 if (copy_to_user(useraddr, &edata, sizeof(edata)))
487 return -EFAULT;
488 return 0;
489}
490
491static int __ethtool_set_sg(struct net_device *dev, u32 data)
492{
493 int err;
494
495 if (!data && dev->ethtool_ops->set_tso) {
496 err = dev->ethtool_ops->set_tso(dev, 0);
497 if (err)
498 return err;
499 }
500
e89e9cf5
AR		 501 if (!data && dev->ethtool_ops->set_ufo) {
502 err = dev->ethtool_ops->set_ufo(dev, 0);
503 if (err)
504 return err;
505 }
1da177e4
LT		 506 return dev->ethtool_ops->set_sg(dev, data);
507}
508
509static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
510{
511 struct ethtool_value edata;
512 int err;
513
514 if (!dev->ethtool_ops->set_tx_csum)
515 return -EOPNOTSUPP;
516
517 if (copy_from_user(&edata, useraddr, sizeof(edata)))
518 return -EFAULT;
519
520 if (!edata.data && dev->ethtool_ops->set_sg) {
521 err = __ethtool_set_sg(dev, 0);
522 if (err)
523 return err;
524 }
525
526 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
527}
528
529static int ethtool_get_sg(struct net_device *dev, char __user *useraddr)
530{
531 struct ethtool_value edata = { ETHTOOL_GSG };
532
533 if (!dev->ethtool_ops->get_sg)
534 return -EOPNOTSUPP;
535
536 edata.data = dev->ethtool_ops->get_sg(dev);
537
538 if (copy_to_user(useraddr, &edata, sizeof(edata)))
539 return -EFAULT;
540 return 0;
541}
542
543static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
544{
545 struct ethtool_value edata;
546
547 if (!dev->ethtool_ops->set_sg)
548 return -EOPNOTSUPP;
549
550 if (copy_from_user(&edata, useraddr, sizeof(edata)))
551 return -EFAULT;
552
553 if (edata.data &&
8648b305 554 !(dev->features & NETIF_F_ALL_CSUM))
1da177e4
LT		 555 return -EINVAL;
556
557 return __ethtool_set_sg(dev, edata.data);
558}
559
560static int ethtool_get_tso(struct net_device *dev, char __user *useraddr)
561{
562 struct ethtool_value edata = { ETHTOOL_GTSO };
563
564 if (!dev->ethtool_ops->get_tso)
565 return -EOPNOTSUPP;
566
567 edata.data = dev->ethtool_ops->get_tso(dev);
568
569 if (copy_to_user(useraddr, &edata, sizeof(edata)))
570 return -EFAULT;
571 return 0;
572}
573
574static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
575{
576 struct ethtool_value edata;
577
578 if (!dev->ethtool_ops->set_tso)
579 return -EOPNOTSUPP;
580
581 if (copy_from_user(&edata, useraddr, sizeof(edata)))
582 return -EFAULT;
583
584 if (edata.data && !(dev->features & NETIF_F_SG))
585 return -EINVAL;
586
587 return dev->ethtool_ops->set_tso(dev, edata.data);
588}
589
e89e9cf5
AR		 590static int ethtool_get_ufo(struct net_device *dev, char __user *useraddr)
591{
592 struct ethtool_value edata = { ETHTOOL_GTSO };
593
594 if (!dev->ethtool_ops->get_ufo)
595 return -EOPNOTSUPP;
596 edata.data = dev->ethtool_ops->get_ufo(dev);
597 if (copy_to_user(useraddr, &edata, sizeof(edata)))
598 return -EFAULT;
599 return 0;
600}
601static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
602{
603 struct ethtool_value edata;
604
605 if (!dev->ethtool_ops->set_ufo)
606 return -EOPNOTSUPP;
607 if (copy_from_user(&edata, useraddr, sizeof(edata)))
608 return -EFAULT;
609 if (edata.data && !(dev->features & NETIF_F_SG))
610 return -EINVAL;
611 if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
612 return -EINVAL;
613 return dev->ethtool_ops->set_ufo(dev, edata.data);
614}
615
1da177e4
LT		 616static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
617{
618 struct ethtool_test test;
619 struct ethtool_ops *ops = dev->ethtool_ops;
620 u64 *data;
621 int ret;
622
623 if (!ops->self_test || !ops->self_test_count)
624 return -EOPNOTSUPP;
625
626 if (copy_from_user(&test, useraddr, sizeof(test)))
627 return -EFAULT;
628
629 test.len = ops->self_test_count(dev);
630 data = kmalloc(test.len * sizeof(u64), GFP_USER);
631 if (!data)
632 return -ENOMEM;
633
634 ops->self_test(dev, &test, data);
635
636 ret = -EFAULT;
637 if (copy_to_user(useraddr, &test, sizeof(test)))
638 goto out;
639 useraddr += sizeof(test);
640 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
641 goto out;
642 ret = 0;
643
644 out:
645 kfree(data);
646 return ret;
647}
648
649static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
650{
651 struct ethtool_gstrings gstrings;
652 struct ethtool_ops *ops = dev->ethtool_ops;
653 u8 *data;
654 int ret;
655
656 if (!ops->get_strings)
657 return -EOPNOTSUPP;
658
659 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
660 return -EFAULT;
661
662 switch (gstrings.string_set) {
663 case ETH_SS_TEST:
664 if (!ops->self_test_count)
665 return -EOPNOTSUPP;
666 gstrings.len = ops->self_test_count(dev);
667 break;
668 case ETH_SS_STATS:
669 if (!ops->get_stats_count)
670 return -EOPNOTSUPP;
671 gstrings.len = ops->get_stats_count(dev);
672 break;
673 default:
674 return -EINVAL;
675 }
676
677 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
678 if (!data)
679 return -ENOMEM;
680
681 ops->get_strings(dev, gstrings.string_set, data);
682
683 ret = -EFAULT;
684 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
685 goto out;
686 useraddr += sizeof(gstrings);
687 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
688 goto out;
689 ret = 0;
690
691 out:
692 kfree(data);
693 return ret;
694}
695
696static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
697{
698 struct ethtool_value id;
699
700 if (!dev->ethtool_ops->phys_id)
701 return -EOPNOTSUPP;
702
703 if (copy_from_user(&id, useraddr, sizeof(id)))
704 return -EFAULT;
705
706 return dev->ethtool_ops->phys_id(dev, id.data);
707}
708
709static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
710{
711 struct ethtool_stats stats;
712 struct ethtool_ops *ops = dev->ethtool_ops;
713 u64 *data;
714 int ret;
715
716 if (!ops->get_ethtool_stats || !ops->get_stats_count)
717 return -EOPNOTSUPP;
718
719 if (copy_from_user(&stats, useraddr, sizeof(stats)))
720 return -EFAULT;
721
722 stats.n_stats = ops->get_stats_count(dev);
723 data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER);
724 if (!data)
725 return -ENOMEM;
726
727 ops->get_ethtool_stats(dev, &stats, data);
728
729 ret = -EFAULT;
730 if (copy_to_user(useraddr, &stats, sizeof(stats)))
731 goto out;
732 useraddr += sizeof(stats);
733 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
734 goto out;
735 ret = 0;
736
737 out:
738 kfree(data);
739 return ret;
740}
741
0bf0519d 742static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 743{
744 struct ethtool_perm_addr epaddr;
745 u8 *data;
746 int ret;
747
748 if (!dev->ethtool_ops->get_perm_addr)
749 return -EOPNOTSUPP;
750
751 if (copy_from_user(&epaddr,useraddr,sizeof(epaddr)))
752 return -EFAULT;
753
754 data = kmalloc(epaddr.size, GFP_USER);
755 if (!data)
756 return -ENOMEM;
757
758 ret = dev->ethtool_ops->get_perm_addr(dev,&epaddr,data);
759 if (ret)
760 return ret;
761
762 ret = -EFAULT;
763 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
764 goto out;
765 useraddr += sizeof(epaddr);
766 if (copy_to_user(useraddr, data, epaddr.size))
767 goto out;
768 ret = 0;
769
770 out:
771 kfree(data);
772 return ret;
773}
774
1da177e4
LT		 775/* The main entry point in this file. Called from net/core/dev.c */
776
777int dev_ethtool(struct ifreq *ifr)
778{
779 struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
780 void __user *useraddr = ifr->ifr_data;
781 u32 ethcmd;
782 int rc;
81e81575 783 unsigned long old_features;
1da177e4
LT		 784
785 /*
786 * XXX: This can be pushed down into the ethtool_* handlers that
787 * need it. Keep existing behaviour for the moment.
788 */
789 if (!capable(CAP_NET_ADMIN))
790 return -EPERM;
791
792 if (!dev || !netif_device_present(dev))
793 return -ENODEV;
794
795 if (!dev->ethtool_ops)
796 goto ioctl;
797
798 if (copy_from_user(&ethcmd, useraddr, sizeof (ethcmd)))
799 return -EFAULT;
800
801 if(dev->ethtool_ops->begin)
802 if ((rc = dev->ethtool_ops->begin(dev)) < 0)
803 return rc;
804
d8a33ac4
SH		 805 old_features = dev->features;
806
1da177e4
LT		 807 switch (ethcmd) {
808 case ETHTOOL_GSET:
809 rc = ethtool_get_settings(dev, useraddr);
810 break;
811 case ETHTOOL_SSET:
812 rc = ethtool_set_settings(dev, useraddr);
813 break;
814 case ETHTOOL_GDRVINFO:
815 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 816 break;
817 case ETHTOOL_GREGS:
818 rc = ethtool_get_regs(dev, useraddr);
819 break;
820 case ETHTOOL_GWOL:
821 rc = ethtool_get_wol(dev, useraddr);
822 break;
823 case ETHTOOL_SWOL:
824 rc = ethtool_set_wol(dev, useraddr);
825 break;
826 case ETHTOOL_GMSGLVL:
827 rc = ethtool_get_msglevel(dev, useraddr);
828 break;
829 case ETHTOOL_SMSGLVL:
830 rc = ethtool_set_msglevel(dev, useraddr);
831 break;
832 case ETHTOOL_NWAY_RST:
833 rc = ethtool_nway_reset(dev);
834 break;
835 case ETHTOOL_GLINK:
836 rc = ethtool_get_link(dev, useraddr);
837 break;
838 case ETHTOOL_GEEPROM:
839 rc = ethtool_get_eeprom(dev, useraddr);
840 break;
841 case ETHTOOL_SEEPROM:
842 rc = ethtool_set_eeprom(dev, useraddr);
843 break;
844 case ETHTOOL_GCOALESCE:
845 rc = ethtool_get_coalesce(dev, useraddr);
846 break;
847 case ETHTOOL_SCOALESCE:
848 rc = ethtool_set_coalesce(dev, useraddr);
849 break;
850 case ETHTOOL_GRINGPARAM:
851 rc = ethtool_get_ringparam(dev, useraddr);
852 break;
853 case ETHTOOL_SRINGPARAM:
854 rc = ethtool_set_ringparam(dev, useraddr);
855 break;
856 case ETHTOOL_GPAUSEPARAM:
857 rc = ethtool_get_pauseparam(dev, useraddr);
858 break;
859 case ETHTOOL_SPAUSEPARAM:
860 rc = ethtool_set_pauseparam(dev, useraddr);
861 break;
862 case ETHTOOL_GRXCSUM:
863 rc = ethtool_get_rx_csum(dev, useraddr);
864 break;
865 case ETHTOOL_SRXCSUM:
866 rc = ethtool_set_rx_csum(dev, useraddr);
867 break;
868 case ETHTOOL_GTXCSUM:
869 rc = ethtool_get_tx_csum(dev, useraddr);
870 break;
871 case ETHTOOL_STXCSUM:
872 rc = ethtool_set_tx_csum(dev, useraddr);
873 break;
874 case ETHTOOL_GSG:
875 rc = ethtool_get_sg(dev, useraddr);
876 break;
877 case ETHTOOL_SSG:
878 rc = ethtool_set_sg(dev, useraddr);
879 break;
880 case ETHTOOL_GTSO:
881 rc = ethtool_get_tso(dev, useraddr);
882 break;
883 case ETHTOOL_STSO:
884 rc = ethtool_set_tso(dev, useraddr);
885 break;
886 case ETHTOOL_TEST:
887 rc = ethtool_self_test(dev, useraddr);
888 break;
889 case ETHTOOL_GSTRINGS:
890 rc = ethtool_get_strings(dev, useraddr);
891 break;
892 case ETHTOOL_PHYS_ID:
893 rc = ethtool_phys_id(dev, useraddr);
894 break;
895 case ETHTOOL_GSTATS:
896 rc = ethtool_get_stats(dev, useraddr);
897 break;
a6f9a705
JW		 898 case ETHTOOL_GPERMADDR:
899 rc = ethtool_get_perm_addr(dev, useraddr);
900 break;
e89e9cf5
AR		 901 case ETHTOOL_GUFO:
902 rc = ethtool_get_ufo(dev, useraddr);
903 break;
904 case ETHTOOL_SUFO:
905 rc = ethtool_set_ufo(dev, useraddr);
906 break;
1da177e4
LT		 907 default:
908 rc = -EOPNOTSUPP;
909 }
910
911 if(dev->ethtool_ops->complete)
912 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 913
914 if (old_features != dev->features)
915 netdev_features_change(dev);
916
1da177e4
LT		 917 return rc;
918
919 ioctl:
920 if (dev->do_ioctl)
921 return dev->do_ioctl(dev, ifr, SIOCETHTOOL);
922 return -EOPNOTSUPP;
923}
924
925EXPORT_SYMBOL(dev_ethtool);
926EXPORT_SYMBOL(ethtool_op_get_link);
a6f9a705 927EXPORT_SYMBOL_GPL(ethtool_op_get_perm_addr);
1da177e4
LT		 928EXPORT_SYMBOL(ethtool_op_get_sg);
929EXPORT_SYMBOL(ethtool_op_get_tso);
930EXPORT_SYMBOL(ethtool_op_get_tx_csum);
931EXPORT_SYMBOL(ethtool_op_set_sg);
932EXPORT_SYMBOL(ethtool_op_set_tso);
933EXPORT_SYMBOL(ethtool_op_set_tx_csum);
69f6a0fa 934EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
e89e9cf5
AR		 935EXPORT_SYMBOL(ethtool_op_set_ufo);
936EXPORT_SYMBOL(ethtool_op_get_ufo);
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