Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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>
14#include <linux/capability.h>
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{
33 return (dev->features & NETIF_F_ALL_CSUM) != 0;
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
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}
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
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
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
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 const 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 const 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(®s, 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, ®s, regbuf);
191
192 ret = -EFAULT;
193 if (copy_to_user(useraddr, ®s, 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 const 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 const 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
386 if (!dev->ethtool_ops->set_coalesce)
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->set_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
501 if (!data && dev->ethtool_ops->set_ufo) {
502 err = dev->ethtool_ops->set_ufo(dev, 0);
503 if (err)
504 return err;
505 }
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 &&
554 !(dev->features & NETIF_F_ALL_CSUM))
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
590static int ethtool_get_ufo(struct net_device *dev, char __user *useraddr)
591{
592 struct ethtool_value edata = { ETHTOOL_GUFO };
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}
601
602static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
603{
604 struct ethtool_value edata;
605
606 if (!dev->ethtool_ops->set_ufo)
607 return -EOPNOTSUPP;
608 if (copy_from_user(&edata, useraddr, sizeof(edata)))
609 return -EFAULT;
610 if (edata.data && !(dev->features & NETIF_F_SG))
611 return -EINVAL;
612 if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
613 return -EINVAL;
614 return dev->ethtool_ops->set_ufo(dev, edata.data);
615}
616
617static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
618{
619 struct ethtool_value edata = { ETHTOOL_GGSO };
620
621 edata.data = dev->features & NETIF_F_GSO;
622 if (copy_to_user(useraddr, &edata, sizeof(edata)))
623 return -EFAULT;
624 return 0;
625}
626
627static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
628{
629 struct ethtool_value edata;
630
631 if (copy_from_user(&edata, useraddr, sizeof(edata)))
632 return -EFAULT;
633 if (edata.data)
634 dev->features |= NETIF_F_GSO;
635 else
636 dev->features &= ~NETIF_F_GSO;
637 return 0;
638}
639
640static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
641{
642 struct ethtool_test test;
643 const struct ethtool_ops *ops = dev->ethtool_ops;
644 u64 *data;
645 int ret;
646
647 if (!ops->self_test || !ops->self_test_count)
648 return -EOPNOTSUPP;
649
650 if (copy_from_user(&test, useraddr, sizeof(test)))
651 return -EFAULT;
652
653 test.len = ops->self_test_count(dev);
654 data = kmalloc(test.len * sizeof(u64), GFP_USER);
655 if (!data)
656 return -ENOMEM;
657
658 ops->self_test(dev, &test, data);
659
660 ret = -EFAULT;
661 if (copy_to_user(useraddr, &test, sizeof(test)))
662 goto out;
663 useraddr += sizeof(test);
664 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
665 goto out;
666 ret = 0;
667
668 out:
669 kfree(data);
670 return ret;
671}
672
673static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
674{
675 struct ethtool_gstrings gstrings;
676 const struct ethtool_ops *ops = dev->ethtool_ops;
677 u8 *data;
678 int ret;
679
680 if (!ops->get_strings)
681 return -EOPNOTSUPP;
682
683 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
684 return -EFAULT;
685
686 switch (gstrings.string_set) {
687 case ETH_SS_TEST:
688 if (!ops->self_test_count)
689 return -EOPNOTSUPP;
690 gstrings.len = ops->self_test_count(dev);
691 break;
692 case ETH_SS_STATS:
693 if (!ops->get_stats_count)
694 return -EOPNOTSUPP;
695 gstrings.len = ops->get_stats_count(dev);
696 break;
697 default:
698 return -EINVAL;
699 }
700
701 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
702 if (!data)
703 return -ENOMEM;
704
705 ops->get_strings(dev, gstrings.string_set, data);
706
707 ret = -EFAULT;
708 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
709 goto out;
710 useraddr += sizeof(gstrings);
711 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
712 goto out;
713 ret = 0;
714
715 out:
716 kfree(data);
717 return ret;
718}
719
720static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
721{
722 struct ethtool_value id;
723
724 if (!dev->ethtool_ops->phys_id)
725 return -EOPNOTSUPP;
726
727 if (copy_from_user(&id, useraddr, sizeof(id)))
728 return -EFAULT;
729
730 return dev->ethtool_ops->phys_id(dev, id.data);
731}
732
733static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
734{
735 struct ethtool_stats stats;
736 const struct ethtool_ops *ops = dev->ethtool_ops;
737 u64 *data;
738 int ret;
739
740 if (!ops->get_ethtool_stats || !ops->get_stats_count)
741 return -EOPNOTSUPP;
742
743 if (copy_from_user(&stats, useraddr, sizeof(stats)))
744 return -EFAULT;
745
746 stats.n_stats = ops->get_stats_count(dev);
747 data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER);
748 if (!data)
749 return -ENOMEM;
750
751 ops->get_ethtool_stats(dev, &stats, data);
752
753 ret = -EFAULT;
754 if (copy_to_user(useraddr, &stats, sizeof(stats)))
755 goto out;
756 useraddr += sizeof(stats);
757 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
758 goto out;
759 ret = 0;
760
761 out:
762 kfree(data);
763 return ret;
764}
765
766static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
767{
768 struct ethtool_perm_addr epaddr;
769 u8 *data;
770 int ret;
771
772 if (!dev->ethtool_ops->get_perm_addr)
773 return -EOPNOTSUPP;
774
775 if (copy_from_user(&epaddr,useraddr,sizeof(epaddr)))
776 return -EFAULT;
777
778 data = kmalloc(epaddr.size, GFP_USER);
779 if (!data)
780 return -ENOMEM;
781
782 ret = dev->ethtool_ops->get_perm_addr(dev,&epaddr,data);
783 if (ret)
784 return ret;
785
786 ret = -EFAULT;
787 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
788 goto out;
789 useraddr += sizeof(epaddr);
790 if (copy_to_user(useraddr, data, epaddr.size))
791 goto out;
792 ret = 0;
793
794 out:
795 kfree(data);
796 return ret;
797}
798
799/* The main entry point in this file. Called from net/core/dev.c */
800
801int dev_ethtool(struct ifreq *ifr)
802{
803 struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
804 void __user *useraddr = ifr->ifr_data;
805 u32 ethcmd;
806 int rc;
807 unsigned long old_features;
808
809 if (!dev || !netif_device_present(dev))
810 return -ENODEV;
811
812 if (!dev->ethtool_ops)
813 goto ioctl;
814
815 if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd)))
816 return -EFAULT;
817
818 /* Allow some commands to be done by anyone */
819 switch(ethcmd) {
820 case ETHTOOL_GDRVINFO:
821 case ETHTOOL_GMSGLVL:
822 case ETHTOOL_GCOALESCE:
823 case ETHTOOL_GRINGPARAM:
824 case ETHTOOL_GPAUSEPARAM:
825 case ETHTOOL_GRXCSUM:
826 case ETHTOOL_GTXCSUM:
827 case ETHTOOL_GSG:
828 case ETHTOOL_GSTRINGS:
829 case ETHTOOL_GTSO:
830 case ETHTOOL_GPERMADDR:
831 case ETHTOOL_GUFO:
832 case ETHTOOL_GGSO:
833 break;
834 default:
835 if (!capable(CAP_NET_ADMIN))
836 return -EPERM;
837 }
838
839 if(dev->ethtool_ops->begin)
840 if ((rc = dev->ethtool_ops->begin(dev)) < 0)
841 return rc;
842
843 old_features = dev->features;
844
845 switch (ethcmd) {
846 case ETHTOOL_GSET:
847 rc = ethtool_get_settings(dev, useraddr);
848 break;
849 case ETHTOOL_SSET:
850 rc = ethtool_set_settings(dev, useraddr);
851 break;
852 case ETHTOOL_GDRVINFO:
853 rc = ethtool_get_drvinfo(dev, useraddr);
854 break;
855 case ETHTOOL_GREGS:
856 rc = ethtool_get_regs(dev, useraddr);
857 break;
858 case ETHTOOL_GWOL:
859 rc = ethtool_get_wol(dev, useraddr);
860 break;
861 case ETHTOOL_SWOL:
862 rc = ethtool_set_wol(dev, useraddr);
863 break;
864 case ETHTOOL_GMSGLVL:
865 rc = ethtool_get_msglevel(dev, useraddr);
866 break;
867 case ETHTOOL_SMSGLVL:
868 rc = ethtool_set_msglevel(dev, useraddr);
869 break;
870 case ETHTOOL_NWAY_RST:
871 rc = ethtool_nway_reset(dev);
872 break;
873 case ETHTOOL_GLINK:
874 rc = ethtool_get_link(dev, useraddr);
875 break;
876 case ETHTOOL_GEEPROM:
877 rc = ethtool_get_eeprom(dev, useraddr);
878 break;
879 case ETHTOOL_SEEPROM:
880 rc = ethtool_set_eeprom(dev, useraddr);
881 break;
882 case ETHTOOL_GCOALESCE:
883 rc = ethtool_get_coalesce(dev, useraddr);
884 break;
885 case ETHTOOL_SCOALESCE:
886 rc = ethtool_set_coalesce(dev, useraddr);
887 break;
888 case ETHTOOL_GRINGPARAM:
889 rc = ethtool_get_ringparam(dev, useraddr);
890 break;
891 case ETHTOOL_SRINGPARAM:
892 rc = ethtool_set_ringparam(dev, useraddr);
893 break;
894 case ETHTOOL_GPAUSEPARAM:
895 rc = ethtool_get_pauseparam(dev, useraddr);
896 break;
897 case ETHTOOL_SPAUSEPARAM:
898 rc = ethtool_set_pauseparam(dev, useraddr);
899 break;
900 case ETHTOOL_GRXCSUM:
901 rc = ethtool_get_rx_csum(dev, useraddr);
902 break;
903 case ETHTOOL_SRXCSUM:
904 rc = ethtool_set_rx_csum(dev, useraddr);
905 break;
906 case ETHTOOL_GTXCSUM:
907 rc = ethtool_get_tx_csum(dev, useraddr);
908 break;
909 case ETHTOOL_STXCSUM:
910 rc = ethtool_set_tx_csum(dev, useraddr);
911 break;
912 case ETHTOOL_GSG:
913 rc = ethtool_get_sg(dev, useraddr);
914 break;
915 case ETHTOOL_SSG:
916 rc = ethtool_set_sg(dev, useraddr);
917 break;
918 case ETHTOOL_GTSO:
919 rc = ethtool_get_tso(dev, useraddr);
920 break;
921 case ETHTOOL_STSO:
922 rc = ethtool_set_tso(dev, useraddr);
923 break;
924 case ETHTOOL_TEST:
925 rc = ethtool_self_test(dev, useraddr);
926 break;
927 case ETHTOOL_GSTRINGS:
928 rc = ethtool_get_strings(dev, useraddr);
929 break;
930 case ETHTOOL_PHYS_ID:
931 rc = ethtool_phys_id(dev, useraddr);
932 break;
933 case ETHTOOL_GSTATS:
934 rc = ethtool_get_stats(dev, useraddr);
935 break;
936 case ETHTOOL_GPERMADDR:
937 rc = ethtool_get_perm_addr(dev, useraddr);
938 break;
939 case ETHTOOL_GUFO:
940 rc = ethtool_get_ufo(dev, useraddr);
941 break;
942 case ETHTOOL_SUFO:
943 rc = ethtool_set_ufo(dev, useraddr);
944 break;
945 case ETHTOOL_GGSO:
946 rc = ethtool_get_gso(dev, useraddr);
947 break;
948 case ETHTOOL_SGSO:
949 rc = ethtool_set_gso(dev, useraddr);
950 break;
951 default:
952 rc = -EOPNOTSUPP;
953 }
954
955 if(dev->ethtool_ops->complete)
956 dev->ethtool_ops->complete(dev);
957
958 if (old_features != dev->features)
959 netdev_features_change(dev);
960
961 return rc;
962
963 ioctl:
964 /* Keep existing behaviour for the moment. */
965 if (!capable(CAP_NET_ADMIN))
966 return -EPERM;
967
968 if (dev->do_ioctl)
969 return dev->do_ioctl(dev, ifr, SIOCETHTOOL);
970 return -EOPNOTSUPP;
971}
972
973EXPORT_SYMBOL(dev_ethtool);
974EXPORT_SYMBOL(ethtool_op_get_link);
975EXPORT_SYMBOL_GPL(ethtool_op_get_perm_addr);
976EXPORT_SYMBOL(ethtool_op_get_sg);
977EXPORT_SYMBOL(ethtool_op_get_tso);
978EXPORT_SYMBOL(ethtool_op_get_tx_csum);
979EXPORT_SYMBOL(ethtool_op_set_sg);
980EXPORT_SYMBOL(ethtool_op_set_tso);
981EXPORT_SYMBOL(ethtool_op_set_tx_csum);
982EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
983EXPORT_SYMBOL(ethtool_op_set_ufo);
984EXPORT_SYMBOL(ethtool_op_get_ufo);