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/errno.h>
15#include <linux/ethtool.h>
16#include <linux/netdevice.h>
17#include <asm/uaccess.h>
18
19/*
20 * Some useful ethtool_ops methods that're device independent.
21 * If we find that all drivers want to do the same thing here,
22 * we can turn these into dev_() function calls.
23 */
24
25u32 ethtool_op_get_link(struct net_device *dev)
26{
27 return netif_carrier_ok(dev) ? 1 : 0;
28}
29
30u32 ethtool_op_get_tx_csum(struct net_device *dev)
31{
32 return (dev->features & (NETIF_F_IP_CSUM | NETIF_F_HW_CSUM)) != 0;
33}
34
35int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
36{
37 if (data)
38 dev->features |= NETIF_F_IP_CSUM;
39 else
40 dev->features &= ~NETIF_F_IP_CSUM;
41
42 return 0;
43}
44
45int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
46{
47 if (data)
48 dev->features |= NETIF_F_HW_CSUM;
49 else
50 dev->features &= ~NETIF_F_HW_CSUM;
51
52 return 0;
53}
54u32 ethtool_op_get_sg(struct net_device *dev)
55{
56 return (dev->features & NETIF_F_SG) != 0;
57}
58
59int ethtool_op_set_sg(struct net_device *dev, u32 data)
60{
61 if (data)
62 dev->features |= NETIF_F_SG;
63 else
64 dev->features &= ~NETIF_F_SG;
65
66 return 0;
67}
68
69u32 ethtool_op_get_tso(struct net_device *dev)
70{
71 return (dev->features & NETIF_F_TSO) != 0;
72}
73
74int ethtool_op_set_tso(struct net_device *dev, u32 data)
75{
76 if (data)
77 dev->features |= NETIF_F_TSO;
78 else
79 dev->features &= ~NETIF_F_TSO;
80
81 return 0;
82}
83
84int ethtool_op_get_perm_addr(struct net_device *dev, struct ethtool_perm_addr *addr, u8 *data)
85{
86 unsigned char len = dev->addr_len;
87 if ( addr->size < len )
88 return -ETOOSMALL;
89
90 addr->size = len;
91 memcpy(data, dev->perm_addr, len);
92 return 0;
93}
94
95
96u32 ethtool_op_get_ufo(struct net_device *dev)
97{
98 return (dev->features & NETIF_F_UFO) != 0;
99}
100
101int ethtool_op_set_ufo(struct net_device *dev, u32 data)
102{
103 if (data)
104 dev->features |= NETIF_F_UFO;
105 else
106 dev->features &= ~NETIF_F_UFO;
107 return 0;
108}
109
110/* Handlers for each ethtool command */
111
112static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
113{
114 struct ethtool_cmd cmd = { ETHTOOL_GSET };
115 int err;
116
117 if (!dev->ethtool_ops->get_settings)
118 return -EOPNOTSUPP;
119
120 err = dev->ethtool_ops->get_settings(dev, &cmd);
121 if (err < 0)
122 return err;
123
124 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
125 return -EFAULT;
126 return 0;
127}
128
129static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
130{
131 struct ethtool_cmd cmd;
132
133 if (!dev->ethtool_ops->set_settings)
134 return -EOPNOTSUPP;
135
136 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
137 return -EFAULT;
138
139 return dev->ethtool_ops->set_settings(dev, &cmd);
140}
141
142static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
143{
144 struct ethtool_drvinfo info;
145 struct ethtool_ops *ops = dev->ethtool_ops;
146
147 if (!ops->get_drvinfo)
148 return -EOPNOTSUPP;
149
150 memset(&info, 0, sizeof(info));
151 info.cmd = ETHTOOL_GDRVINFO;
152 ops->get_drvinfo(dev, &info);
153
154 if (ops->self_test_count)
155 info.testinfo_len = ops->self_test_count(dev);
156 if (ops->get_stats_count)
157 info.n_stats = ops->get_stats_count(dev);
158 if (ops->get_regs_len)
159 info.regdump_len = ops->get_regs_len(dev);
160 if (ops->get_eeprom_len)
161 info.eedump_len = ops->get_eeprom_len(dev);
162
163 if (copy_to_user(useraddr, &info, sizeof(info)))
164 return -EFAULT;
165 return 0;
166}
167
168static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
169{
170 struct ethtool_regs regs;
171 struct ethtool_ops *ops = dev->ethtool_ops;
172 void *regbuf;
173 int reglen, ret;
174
175 if (!ops->get_regs || !ops->get_regs_len)
176 return -EOPNOTSUPP;
177
178 if (copy_from_user(®s, useraddr, sizeof(regs)))
179 return -EFAULT;
180
181 reglen = ops->get_regs_len(dev);
182 if (regs.len > reglen)
183 regs.len = reglen;
184
185 regbuf = kmalloc(reglen, GFP_USER);
186 if (!regbuf)
187 return -ENOMEM;
188
189 ops->get_regs(dev, ®s, regbuf);
190
191 ret = -EFAULT;
192 if (copy_to_user(useraddr, ®s, sizeof(regs)))
193 goto out;
194 useraddr += offsetof(struct ethtool_regs, data);
195 if (copy_to_user(useraddr, regbuf, regs.len))
196 goto out;
197 ret = 0;
198
199 out:
200 kfree(regbuf);
201 return ret;
202}
203
204static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
205{
206 struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
207
208 if (!dev->ethtool_ops->get_wol)
209 return -EOPNOTSUPP;
210
211 dev->ethtool_ops->get_wol(dev, &wol);
212
213 if (copy_to_user(useraddr, &wol, sizeof(wol)))
214 return -EFAULT;
215 return 0;
216}
217
218static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
219{
220 struct ethtool_wolinfo wol;
221
222 if (!dev->ethtool_ops->set_wol)
223 return -EOPNOTSUPP;
224
225 if (copy_from_user(&wol, useraddr, sizeof(wol)))
226 return -EFAULT;
227
228 return dev->ethtool_ops->set_wol(dev, &wol);
229}
230
231static int ethtool_get_msglevel(struct net_device *dev, char __user *useraddr)
232{
233 struct ethtool_value edata = { ETHTOOL_GMSGLVL };
234
235 if (!dev->ethtool_ops->get_msglevel)
236 return -EOPNOTSUPP;
237
238 edata.data = dev->ethtool_ops->get_msglevel(dev);
239
240 if (copy_to_user(useraddr, &edata, sizeof(edata)))
241 return -EFAULT;
242 return 0;
243}
244
245static int ethtool_set_msglevel(struct net_device *dev, char __user *useraddr)
246{
247 struct ethtool_value edata;
248
249 if (!dev->ethtool_ops->set_msglevel)
250 return -EOPNOTSUPP;
251
252 if (copy_from_user(&edata, useraddr, sizeof(edata)))
253 return -EFAULT;
254
255 dev->ethtool_ops->set_msglevel(dev, edata.data);
256 return 0;
257}
258
259static int ethtool_nway_reset(struct net_device *dev)
260{
261 if (!dev->ethtool_ops->nway_reset)
262 return -EOPNOTSUPP;
263
264 return dev->ethtool_ops->nway_reset(dev);
265}
266
267static int ethtool_get_link(struct net_device *dev, void __user *useraddr)
268{
269 struct ethtool_value edata = { ETHTOOL_GLINK };
270
271 if (!dev->ethtool_ops->get_link)
272 return -EOPNOTSUPP;
273
274 edata.data = dev->ethtool_ops->get_link(dev);
275
276 if (copy_to_user(useraddr, &edata, sizeof(edata)))
277 return -EFAULT;
278 return 0;
279}
280
281static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
282{
283 struct ethtool_eeprom eeprom;
284 struct ethtool_ops *ops = dev->ethtool_ops;
285 u8 *data;
286 int ret;
287
288 if (!ops->get_eeprom || !ops->get_eeprom_len)
289 return -EOPNOTSUPP;
290
291 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
292 return -EFAULT;
293
294 /* Check for wrap and zero */
295 if (eeprom.offset + eeprom.len <= eeprom.offset)
296 return -EINVAL;
297
298 /* Check for exceeding total eeprom len */
299 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
300 return -EINVAL;
301
302 data = kmalloc(eeprom.len, GFP_USER);
303 if (!data)
304 return -ENOMEM;
305
306 ret = -EFAULT;
307 if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
308 goto out;
309
310 ret = ops->get_eeprom(dev, &eeprom, data);
311 if (ret)
312 goto out;
313
314 ret = -EFAULT;
315 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
316 goto out;
317 if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
318 goto out;
319 ret = 0;
320
321 out:
322 kfree(data);
323 return ret;
324}
325
326static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
327{
328 struct ethtool_eeprom eeprom;
329 struct ethtool_ops *ops = dev->ethtool_ops;
330 u8 *data;
331 int ret;
332
333 if (!ops->set_eeprom || !ops->get_eeprom_len)
334 return -EOPNOTSUPP;
335
336 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
337 return -EFAULT;
338
339 /* Check for wrap and zero */
340 if (eeprom.offset + eeprom.len <= eeprom.offset)
341 return -EINVAL;
342
343 /* Check for exceeding total eeprom len */
344 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
345 return -EINVAL;
346
347 data = kmalloc(eeprom.len, GFP_USER);
348 if (!data)
349 return -ENOMEM;
350
351 ret = -EFAULT;
352 if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
353 goto out;
354
355 ret = ops->set_eeprom(dev, &eeprom, data);
356 if (ret)
357 goto out;
358
359 if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
360 ret = -EFAULT;
361
362 out:
363 kfree(data);
364 return ret;
365}
366
367static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
368{
369 struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE };
370
371 if (!dev->ethtool_ops->get_coalesce)
372 return -EOPNOTSUPP;
373
374 dev->ethtool_ops->get_coalesce(dev, &coalesce);
375
376 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
377 return -EFAULT;
378 return 0;
379}
380
381static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
382{
383 struct ethtool_coalesce coalesce;
384
385 if (!dev->ethtool_ops->set_coalesce)
386 return -EOPNOTSUPP;
387
388 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
389 return -EFAULT;
390
391 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
392}
393
394static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
395{
396 struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM };
397
398 if (!dev->ethtool_ops->get_ringparam)
399 return -EOPNOTSUPP;
400
401 dev->ethtool_ops->get_ringparam(dev, &ringparam);
402
403 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
404 return -EFAULT;
405 return 0;
406}
407
408static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
409{
410 struct ethtool_ringparam ringparam;
411
412 if (!dev->ethtool_ops->set_ringparam)
413 return -EOPNOTSUPP;
414
415 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
416 return -EFAULT;
417
418 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
419}
420
421static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
422{
423 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
424
425 if (!dev->ethtool_ops->get_pauseparam)
426 return -EOPNOTSUPP;
427
428 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
429
430 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
431 return -EFAULT;
432 return 0;
433}
434
435static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
436{
437 struct ethtool_pauseparam pauseparam;
438
439 if (!dev->ethtool_ops->get_pauseparam)
440 return -EOPNOTSUPP;
441
442 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
443 return -EFAULT;
444
445 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
446}
447
448static int ethtool_get_rx_csum(struct net_device *dev, char __user *useraddr)
449{
450 struct ethtool_value edata = { ETHTOOL_GRXCSUM };
451
452 if (!dev->ethtool_ops->get_rx_csum)
453 return -EOPNOTSUPP;
454
455 edata.data = dev->ethtool_ops->get_rx_csum(dev);
456
457 if (copy_to_user(useraddr, &edata, sizeof(edata)))
458 return -EFAULT;
459 return 0;
460}
461
462static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
463{
464 struct ethtool_value edata;
465
466 if (!dev->ethtool_ops->set_rx_csum)
467 return -EOPNOTSUPP;
468
469 if (copy_from_user(&edata, useraddr, sizeof(edata)))
470 return -EFAULT;
471
472 dev->ethtool_ops->set_rx_csum(dev, edata.data);
473 return 0;
474}
475
476static int ethtool_get_tx_csum(struct net_device *dev, char __user *useraddr)
477{
478 struct ethtool_value edata = { ETHTOOL_GTXCSUM };
479
480 if (!dev->ethtool_ops->get_tx_csum)
481 return -EOPNOTSUPP;
482
483 edata.data = dev->ethtool_ops->get_tx_csum(dev);
484
485 if (copy_to_user(useraddr, &edata, sizeof(edata)))
486 return -EFAULT;
487 return 0;
488}
489
490static int __ethtool_set_sg(struct net_device *dev, u32 data)
491{
492 int err;
493
494 if (!data && dev->ethtool_ops->set_tso) {
495 err = dev->ethtool_ops->set_tso(dev, 0);
496 if (err)
497 return err;
498 }
499
500 if (!data && dev->ethtool_ops->set_ufo) {
501 err = dev->ethtool_ops->set_ufo(dev, 0);
502 if (err)
503 return err;
504 }
505 return dev->ethtool_ops->set_sg(dev, data);
506}
507
508static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
509{
510 struct ethtool_value edata;
511 int err;
512
513 if (!dev->ethtool_ops->set_tx_csum)
514 return -EOPNOTSUPP;
515
516 if (copy_from_user(&edata, useraddr, sizeof(edata)))
517 return -EFAULT;
518
519 if (!edata.data && dev->ethtool_ops->set_sg) {
520 err = __ethtool_set_sg(dev, 0);
521 if (err)
522 return err;
523 }
524
525 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
526}
527
528static int ethtool_get_sg(struct net_device *dev, char __user *useraddr)
529{
530 struct ethtool_value edata = { ETHTOOL_GSG };
531
532 if (!dev->ethtool_ops->get_sg)
533 return -EOPNOTSUPP;
534
535 edata.data = dev->ethtool_ops->get_sg(dev);
536
537 if (copy_to_user(useraddr, &edata, sizeof(edata)))
538 return -EFAULT;
539 return 0;
540}
541
542static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
543{
544 struct ethtool_value edata;
545
546 if (!dev->ethtool_ops->set_sg)
547 return -EOPNOTSUPP;
548
549 if (copy_from_user(&edata, useraddr, sizeof(edata)))
550 return -EFAULT;
551
552 if (edata.data &&
553 !(dev->features & (NETIF_F_IP_CSUM |
554 NETIF_F_NO_CSUM |
555 NETIF_F_HW_CSUM)))
556 return -EINVAL;
557
558 return __ethtool_set_sg(dev, edata.data);
559}
560
561static int ethtool_get_tso(struct net_device *dev, char __user *useraddr)
562{
563 struct ethtool_value edata = { ETHTOOL_GTSO };
564
565 if (!dev->ethtool_ops->get_tso)
566 return -EOPNOTSUPP;
567
568 edata.data = dev->ethtool_ops->get_tso(dev);
569
570 if (copy_to_user(useraddr, &edata, sizeof(edata)))
571 return -EFAULT;
572 return 0;
573}
574
575static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
576{
577 struct ethtool_value edata;
578
579 if (!dev->ethtool_ops->set_tso)
580 return -EOPNOTSUPP;
581
582 if (copy_from_user(&edata, useraddr, sizeof(edata)))
583 return -EFAULT;
584
585 if (edata.data && !(dev->features & NETIF_F_SG))
586 return -EINVAL;
587
588 return dev->ethtool_ops->set_tso(dev, edata.data);
589}
590
591static int ethtool_get_ufo(struct net_device *dev, char __user *useraddr)
592{
593 struct ethtool_value edata = { ETHTOOL_GTSO };
594
595 if (!dev->ethtool_ops->get_ufo)
596 return -EOPNOTSUPP;
597 edata.data = dev->ethtool_ops->get_ufo(dev);
598 if (copy_to_user(useraddr, &edata, sizeof(edata)))
599 return -EFAULT;
600 return 0;
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_self_test(struct net_device *dev, char __user *useraddr)
618{
619 struct ethtool_test test;
620 struct ethtool_ops *ops = dev->ethtool_ops;
621 u64 *data;
622 int ret;
623
624 if (!ops->self_test || !ops->self_test_count)
625 return -EOPNOTSUPP;
626
627 if (copy_from_user(&test, useraddr, sizeof(test)))
628 return -EFAULT;
629
630 test.len = ops->self_test_count(dev);
631 data = kmalloc(test.len * sizeof(u64), GFP_USER);
632 if (!data)
633 return -ENOMEM;
634
635 ops->self_test(dev, &test, data);
636
637 ret = -EFAULT;
638 if (copy_to_user(useraddr, &test, sizeof(test)))
639 goto out;
640 useraddr += sizeof(test);
641 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
642 goto out;
643 ret = 0;
644
645 out:
646 kfree(data);
647 return ret;
648}
649
650static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
651{
652 struct ethtool_gstrings gstrings;
653 struct ethtool_ops *ops = dev->ethtool_ops;
654 u8 *data;
655 int ret;
656
657 if (!ops->get_strings)
658 return -EOPNOTSUPP;
659
660 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
661 return -EFAULT;
662
663 switch (gstrings.string_set) {
664 case ETH_SS_TEST:
665 if (!ops->self_test_count)
666 return -EOPNOTSUPP;
667 gstrings.len = ops->self_test_count(dev);
668 break;
669 case ETH_SS_STATS:
670 if (!ops->get_stats_count)
671 return -EOPNOTSUPP;
672 gstrings.len = ops->get_stats_count(dev);
673 break;
674 default:
675 return -EINVAL;
676 }
677
678 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
679 if (!data)
680 return -ENOMEM;
681
682 ops->get_strings(dev, gstrings.string_set, data);
683
684 ret = -EFAULT;
685 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
686 goto out;
687 useraddr += sizeof(gstrings);
688 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
689 goto out;
690 ret = 0;
691
692 out:
693 kfree(data);
694 return ret;
695}
696
697static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
698{
699 struct ethtool_value id;
700
701 if (!dev->ethtool_ops->phys_id)
702 return -EOPNOTSUPP;
703
704 if (copy_from_user(&id, useraddr, sizeof(id)))
705 return -EFAULT;
706
707 return dev->ethtool_ops->phys_id(dev, id.data);
708}
709
710static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
711{
712 struct ethtool_stats stats;
713 struct ethtool_ops *ops = dev->ethtool_ops;
714 u64 *data;
715 int ret;
716
717 if (!ops->get_ethtool_stats || !ops->get_stats_count)
718 return -EOPNOTSUPP;
719
720 if (copy_from_user(&stats, useraddr, sizeof(stats)))
721 return -EFAULT;
722
723 stats.n_stats = ops->get_stats_count(dev);
724 data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER);
725 if (!data)
726 return -ENOMEM;
727
728 ops->get_ethtool_stats(dev, &stats, data);
729
730 ret = -EFAULT;
731 if (copy_to_user(useraddr, &stats, sizeof(stats)))
732 goto out;
733 useraddr += sizeof(stats);
734 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
735 goto out;
736 ret = 0;
737
738 out:
739 kfree(data);
740 return ret;
741}
742
743static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
744{
745 struct ethtool_perm_addr epaddr;
746 u8 *data;
747 int ret;
748
749 if (!dev->ethtool_ops->get_perm_addr)
750 return -EOPNOTSUPP;
751
752 if (copy_from_user(&epaddr,useraddr,sizeof(epaddr)))
753 return -EFAULT;
754
755 data = kmalloc(epaddr.size, GFP_USER);
756 if (!data)
757 return -ENOMEM;
758
759 ret = dev->ethtool_ops->get_perm_addr(dev,&epaddr,data);
760 if (ret)
761 return ret;
762
763 ret = -EFAULT;
764 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
765 goto out;
766 useraddr += sizeof(epaddr);
767 if (copy_to_user(useraddr, data, epaddr.size))
768 goto out;
769 ret = 0;
770
771 out:
772 kfree(data);
773 return ret;
774}
775
776/* The main entry point in this file. Called from net/core/dev.c */
777
778int dev_ethtool(struct ifreq *ifr)
779{
780 struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
781 void __user *useraddr = ifr->ifr_data;
782 u32 ethcmd;
783 int rc;
784 unsigned long old_features;
785
786 /*
787 * XXX: This can be pushed down into the ethtool_* handlers that
788 * need it. Keep existing behaviour for the moment.
789 */
790 if (!capable(CAP_NET_ADMIN))
791 return -EPERM;
792
793 if (!dev || !netif_device_present(dev))
794 return -ENODEV;
795
796 if (!dev->ethtool_ops)
797 goto ioctl;
798
799 if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd)))
800 return -EFAULT;
801
802 if(dev->ethtool_ops->begin)
803 if ((rc = dev->ethtool_ops->begin(dev)) < 0)
804 return rc;
805
806 old_features = dev->features;
807
808 switch (ethcmd) {
809 case ETHTOOL_GSET:
810 rc = ethtool_get_settings(dev, useraddr);
811 break;
812 case ETHTOOL_SSET:
813 rc = ethtool_set_settings(dev, useraddr);
814 break;
815 case ETHTOOL_GDRVINFO:
816 rc = ethtool_get_drvinfo(dev, useraddr);
817 break;
818 case ETHTOOL_GREGS:
819 rc = ethtool_get_regs(dev, useraddr);
820 break;
821 case ETHTOOL_GWOL:
822 rc = ethtool_get_wol(dev, useraddr);
823 break;
824 case ETHTOOL_SWOL:
825 rc = ethtool_set_wol(dev, useraddr);
826 break;
827 case ETHTOOL_GMSGLVL:
828 rc = ethtool_get_msglevel(dev, useraddr);
829 break;
830 case ETHTOOL_SMSGLVL:
831 rc = ethtool_set_msglevel(dev, useraddr);
832 break;
833 case ETHTOOL_NWAY_RST:
834 rc = ethtool_nway_reset(dev);
835 break;
836 case ETHTOOL_GLINK:
837 rc = ethtool_get_link(dev, useraddr);
838 break;
839 case ETHTOOL_GEEPROM:
840 rc = ethtool_get_eeprom(dev, useraddr);
841 break;
842 case ETHTOOL_SEEPROM:
843 rc = ethtool_set_eeprom(dev, useraddr);
844 break;
845 case ETHTOOL_GCOALESCE:
846 rc = ethtool_get_coalesce(dev, useraddr);
847 break;
848 case ETHTOOL_SCOALESCE:
849 rc = ethtool_set_coalesce(dev, useraddr);
850 break;
851 case ETHTOOL_GRINGPARAM:
852 rc = ethtool_get_ringparam(dev, useraddr);
853 break;
854 case ETHTOOL_SRINGPARAM:
855 rc = ethtool_set_ringparam(dev, useraddr);
856 break;
857 case ETHTOOL_GPAUSEPARAM:
858 rc = ethtool_get_pauseparam(dev, useraddr);
859 break;
860 case ETHTOOL_SPAUSEPARAM:
861 rc = ethtool_set_pauseparam(dev, useraddr);
862 break;
863 case ETHTOOL_GRXCSUM:
864 rc = ethtool_get_rx_csum(dev, useraddr);
865 break;
866 case ETHTOOL_SRXCSUM:
867 rc = ethtool_set_rx_csum(dev, useraddr);
868 break;
869 case ETHTOOL_GTXCSUM:
870 rc = ethtool_get_tx_csum(dev, useraddr);
871 break;
872 case ETHTOOL_STXCSUM:
873 rc = ethtool_set_tx_csum(dev, useraddr);
874 break;
875 case ETHTOOL_GSG:
876 rc = ethtool_get_sg(dev, useraddr);
877 break;
878 case ETHTOOL_SSG:
879 rc = ethtool_set_sg(dev, useraddr);
880 break;
881 case ETHTOOL_GTSO:
882 rc = ethtool_get_tso(dev, useraddr);
883 break;
884 case ETHTOOL_STSO:
885 rc = ethtool_set_tso(dev, useraddr);
886 break;
887 case ETHTOOL_TEST:
888 rc = ethtool_self_test(dev, useraddr);
889 break;
890 case ETHTOOL_GSTRINGS:
891 rc = ethtool_get_strings(dev, useraddr);
892 break;
893 case ETHTOOL_PHYS_ID:
894 rc = ethtool_phys_id(dev, useraddr);
895 break;
896 case ETHTOOL_GSTATS:
897 rc = ethtool_get_stats(dev, useraddr);
898 break;
899 case ETHTOOL_GPERMADDR:
900 rc = ethtool_get_perm_addr(dev, useraddr);
901 break;
902 case ETHTOOL_GUFO:
903 rc = ethtool_get_ufo(dev, useraddr);
904 break;
905 case ETHTOOL_SUFO:
906 rc = ethtool_set_ufo(dev, useraddr);
907 break;
908 default:
909 rc = -EOPNOTSUPP;
910 }
911
912 if(dev->ethtool_ops->complete)
913 dev->ethtool_ops->complete(dev);
914
915 if (old_features != dev->features)
916 netdev_features_change(dev);
917
918 return rc;
919
920 ioctl:
921 if (dev->do_ioctl)
922 return dev->do_ioctl(dev, ifr, SIOCETHTOOL);
923 return -EOPNOTSUPP;
924}
925
926EXPORT_SYMBOL(dev_ethtool);
927EXPORT_SYMBOL(ethtool_op_get_link);
928EXPORT_SYMBOL_GPL(ethtool_op_get_perm_addr);
929EXPORT_SYMBOL(ethtool_op_get_sg);
930EXPORT_SYMBOL(ethtool_op_get_tso);
931EXPORT_SYMBOL(ethtool_op_get_tx_csum);
932EXPORT_SYMBOL(ethtool_op_set_sg);
933EXPORT_SYMBOL(ethtool_op_set_tso);
934EXPORT_SYMBOL(ethtool_op_set_tx_csum);
935EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
936EXPORT_SYMBOL(ethtool_op_set_ufo);
937EXPORT_SYMBOL(ethtool_op_get_ufo);