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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> | |
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 | ||
25 | u32 ethtool_op_get_link(struct net_device *dev) | |
26 | { | |
27 | return netif_carrier_ok(dev) ? 1 : 0; | |
28 | } | |
29 | ||
30 | u32 ethtool_op_get_tx_csum(struct net_device *dev) | |
31 | { | |
32 | return (dev->features & NETIF_F_IP_CSUM) != 0; | |
33 | } | |
34 | ||
35 | int 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 | ||
45 | u32 ethtool_op_get_sg(struct net_device *dev) | |
46 | { | |
47 | return (dev->features & NETIF_F_SG) != 0; | |
48 | } | |
49 | ||
50 | int ethtool_op_set_sg(struct net_device *dev, u32 data) | |
51 | { | |
52 | if (data) | |
53 | dev->features |= NETIF_F_SG; | |
54 | else | |
55 | dev->features &= ~NETIF_F_SG; | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | u32 ethtool_op_get_tso(struct net_device *dev) | |
61 | { | |
62 | return (dev->features & NETIF_F_TSO) != 0; | |
63 | } | |
64 | ||
65 | int ethtool_op_set_tso(struct net_device *dev, u32 data) | |
66 | { | |
67 | if (data) | |
68 | dev->features |= NETIF_F_TSO; | |
69 | else | |
70 | dev->features &= ~NETIF_F_TSO; | |
71 | ||
72 | return 0; | |
73 | } | |
74 | ||
75 | /* Handlers for each ethtool command */ | |
76 | ||
77 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) | |
78 | { | |
79 | struct ethtool_cmd cmd = { ETHTOOL_GSET }; | |
80 | int err; | |
81 | ||
82 | if (!dev->ethtool_ops->get_settings) | |
83 | return -EOPNOTSUPP; | |
84 | ||
85 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
86 | if (err < 0) | |
87 | return err; | |
88 | ||
89 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
90 | return -EFAULT; | |
91 | return 0; | |
92 | } | |
93 | ||
94 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) | |
95 | { | |
96 | struct ethtool_cmd cmd; | |
97 | ||
98 | if (!dev->ethtool_ops->set_settings) | |
99 | return -EOPNOTSUPP; | |
100 | ||
101 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
102 | return -EFAULT; | |
103 | ||
104 | return dev->ethtool_ops->set_settings(dev, &cmd); | |
105 | } | |
106 | ||
107 | static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr) | |
108 | { | |
109 | struct ethtool_drvinfo info; | |
110 | struct ethtool_ops *ops = dev->ethtool_ops; | |
111 | ||
112 | if (!ops->get_drvinfo) | |
113 | return -EOPNOTSUPP; | |
114 | ||
115 | memset(&info, 0, sizeof(info)); | |
116 | info.cmd = ETHTOOL_GDRVINFO; | |
117 | ops->get_drvinfo(dev, &info); | |
118 | ||
119 | if (ops->self_test_count) | |
120 | info.testinfo_len = ops->self_test_count(dev); | |
121 | if (ops->get_stats_count) | |
122 | info.n_stats = ops->get_stats_count(dev); | |
123 | if (ops->get_regs_len) | |
124 | info.regdump_len = ops->get_regs_len(dev); | |
125 | if (ops->get_eeprom_len) | |
126 | info.eedump_len = ops->get_eeprom_len(dev); | |
127 | ||
128 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
129 | return -EFAULT; | |
130 | return 0; | |
131 | } | |
132 | ||
133 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) | |
134 | { | |
135 | struct ethtool_regs regs; | |
136 | struct ethtool_ops *ops = dev->ethtool_ops; | |
137 | void *regbuf; | |
138 | int reglen, ret; | |
139 | ||
140 | if (!ops->get_regs || !ops->get_regs_len) | |
141 | return -EOPNOTSUPP; | |
142 | ||
143 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
144 | return -EFAULT; | |
145 | ||
146 | reglen = ops->get_regs_len(dev); | |
147 | if (regs.len > reglen) | |
148 | regs.len = reglen; | |
149 | ||
150 | regbuf = kmalloc(reglen, GFP_USER); | |
151 | if (!regbuf) | |
152 | return -ENOMEM; | |
153 | ||
154 | ops->get_regs(dev, ®s, regbuf); | |
155 | ||
156 | ret = -EFAULT; | |
157 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
158 | goto out; | |
159 | useraddr += offsetof(struct ethtool_regs, data); | |
160 | if (copy_to_user(useraddr, regbuf, regs.len)) | |
161 | goto out; | |
162 | ret = 0; | |
163 | ||
164 | out: | |
165 | kfree(regbuf); | |
166 | return ret; | |
167 | } | |
168 | ||
169 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) | |
170 | { | |
171 | struct ethtool_wolinfo wol = { ETHTOOL_GWOL }; | |
172 | ||
173 | if (!dev->ethtool_ops->get_wol) | |
174 | return -EOPNOTSUPP; | |
175 | ||
176 | dev->ethtool_ops->get_wol(dev, &wol); | |
177 | ||
178 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
179 | return -EFAULT; | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
184 | { | |
185 | struct ethtool_wolinfo wol; | |
186 | ||
187 | if (!dev->ethtool_ops->set_wol) | |
188 | return -EOPNOTSUPP; | |
189 | ||
190 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
191 | return -EFAULT; | |
192 | ||
193 | return dev->ethtool_ops->set_wol(dev, &wol); | |
194 | } | |
195 | ||
196 | static int ethtool_get_msglevel(struct net_device *dev, char __user *useraddr) | |
197 | { | |
198 | struct ethtool_value edata = { ETHTOOL_GMSGLVL }; | |
199 | ||
200 | if (!dev->ethtool_ops->get_msglevel) | |
201 | return -EOPNOTSUPP; | |
202 | ||
203 | edata.data = dev->ethtool_ops->get_msglevel(dev); | |
204 | ||
205 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
206 | return -EFAULT; | |
207 | return 0; | |
208 | } | |
209 | ||
210 | static int ethtool_set_msglevel(struct net_device *dev, char __user *useraddr) | |
211 | { | |
212 | struct ethtool_value edata; | |
213 | ||
214 | if (!dev->ethtool_ops->set_msglevel) | |
215 | return -EOPNOTSUPP; | |
216 | ||
217 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
218 | return -EFAULT; | |
219 | ||
220 | dev->ethtool_ops->set_msglevel(dev, edata.data); | |
221 | return 0; | |
222 | } | |
223 | ||
224 | static int ethtool_nway_reset(struct net_device *dev) | |
225 | { | |
226 | if (!dev->ethtool_ops->nway_reset) | |
227 | return -EOPNOTSUPP; | |
228 | ||
229 | return dev->ethtool_ops->nway_reset(dev); | |
230 | } | |
231 | ||
232 | static int ethtool_get_link(struct net_device *dev, void __user *useraddr) | |
233 | { | |
234 | struct ethtool_value edata = { ETHTOOL_GLINK }; | |
235 | ||
236 | if (!dev->ethtool_ops->get_link) | |
237 | return -EOPNOTSUPP; | |
238 | ||
239 | edata.data = dev->ethtool_ops->get_link(dev); | |
240 | ||
241 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
242 | return -EFAULT; | |
243 | return 0; | |
244 | } | |
245 | ||
246 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) | |
247 | { | |
248 | struct ethtool_eeprom eeprom; | |
249 | struct ethtool_ops *ops = dev->ethtool_ops; | |
250 | u8 *data; | |
251 | int ret; | |
252 | ||
253 | if (!ops->get_eeprom || !ops->get_eeprom_len) | |
254 | return -EOPNOTSUPP; | |
255 | ||
256 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
257 | return -EFAULT; | |
258 | ||
259 | /* Check for wrap and zero */ | |
260 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
261 | return -EINVAL; | |
262 | ||
263 | /* Check for exceeding total eeprom len */ | |
264 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
265 | return -EINVAL; | |
266 | ||
267 | data = kmalloc(eeprom.len, GFP_USER); | |
268 | if (!data) | |
269 | return -ENOMEM; | |
270 | ||
271 | ret = -EFAULT; | |
272 | if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len)) | |
273 | goto out; | |
274 | ||
275 | ret = ops->get_eeprom(dev, &eeprom, data); | |
276 | if (ret) | |
277 | goto out; | |
278 | ||
279 | ret = -EFAULT; | |
280 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
281 | goto out; | |
282 | if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len)) | |
283 | goto out; | |
284 | ret = 0; | |
285 | ||
286 | out: | |
287 | kfree(data); | |
288 | return ret; | |
289 | } | |
290 | ||
291 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) | |
292 | { | |
293 | struct ethtool_eeprom eeprom; | |
294 | struct ethtool_ops *ops = dev->ethtool_ops; | |
295 | u8 *data; | |
296 | int ret; | |
297 | ||
298 | if (!ops->set_eeprom || !ops->get_eeprom_len) | |
299 | return -EOPNOTSUPP; | |
300 | ||
301 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
302 | return -EFAULT; | |
303 | ||
304 | /* Check for wrap and zero */ | |
305 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
306 | return -EINVAL; | |
307 | ||
308 | /* Check for exceeding total eeprom len */ | |
309 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
310 | return -EINVAL; | |
311 | ||
312 | data = kmalloc(eeprom.len, GFP_USER); | |
313 | if (!data) | |
314 | return -ENOMEM; | |
315 | ||
316 | ret = -EFAULT; | |
317 | if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len)) | |
318 | goto out; | |
319 | ||
320 | ret = ops->set_eeprom(dev, &eeprom, data); | |
321 | if (ret) | |
322 | goto out; | |
323 | ||
324 | if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len)) | |
325 | ret = -EFAULT; | |
326 | ||
327 | out: | |
328 | kfree(data); | |
329 | return ret; | |
330 | } | |
331 | ||
332 | static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr) | |
333 | { | |
334 | struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE }; | |
335 | ||
336 | if (!dev->ethtool_ops->get_coalesce) | |
337 | return -EOPNOTSUPP; | |
338 | ||
339 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
340 | ||
341 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
342 | return -EFAULT; | |
343 | return 0; | |
344 | } | |
345 | ||
346 | static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr) | |
347 | { | |
348 | struct ethtool_coalesce coalesce; | |
349 | ||
350 | if (!dev->ethtool_ops->get_coalesce) | |
351 | return -EOPNOTSUPP; | |
352 | ||
353 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
354 | return -EFAULT; | |
355 | ||
356 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
357 | } | |
358 | ||
359 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
360 | { | |
361 | struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM }; | |
362 | ||
363 | if (!dev->ethtool_ops->get_ringparam) | |
364 | return -EOPNOTSUPP; | |
365 | ||
366 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
367 | ||
368 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
369 | return -EFAULT; | |
370 | return 0; | |
371 | } | |
372 | ||
373 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
374 | { | |
375 | struct ethtool_ringparam ringparam; | |
376 | ||
377 | if (!dev->ethtool_ops->set_ringparam) | |
378 | return -EOPNOTSUPP; | |
379 | ||
380 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
381 | return -EFAULT; | |
382 | ||
383 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
384 | } | |
385 | ||
386 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) | |
387 | { | |
388 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
389 | ||
390 | if (!dev->ethtool_ops->get_pauseparam) | |
391 | return -EOPNOTSUPP; | |
392 | ||
393 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
394 | ||
395 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
396 | return -EFAULT; | |
397 | return 0; | |
398 | } | |
399 | ||
400 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
401 | { | |
402 | struct ethtool_pauseparam pauseparam; | |
403 | ||
404 | if (!dev->ethtool_ops->get_pauseparam) | |
405 | return -EOPNOTSUPP; | |
406 | ||
407 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
408 | return -EFAULT; | |
409 | ||
410 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
411 | } | |
412 | ||
413 | static int ethtool_get_rx_csum(struct net_device *dev, char __user *useraddr) | |
414 | { | |
415 | struct ethtool_value edata = { ETHTOOL_GRXCSUM }; | |
416 | ||
417 | if (!dev->ethtool_ops->get_rx_csum) | |
418 | return -EOPNOTSUPP; | |
419 | ||
420 | edata.data = dev->ethtool_ops->get_rx_csum(dev); | |
421 | ||
422 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
423 | return -EFAULT; | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr) | |
428 | { | |
429 | struct ethtool_value edata; | |
430 | ||
431 | if (!dev->ethtool_ops->set_rx_csum) | |
432 | return -EOPNOTSUPP; | |
433 | ||
434 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
435 | return -EFAULT; | |
436 | ||
437 | dev->ethtool_ops->set_rx_csum(dev, edata.data); | |
438 | return 0; | |
439 | } | |
440 | ||
441 | static int ethtool_get_tx_csum(struct net_device *dev, char __user *useraddr) | |
442 | { | |
443 | struct ethtool_value edata = { ETHTOOL_GTXCSUM }; | |
444 | ||
445 | if (!dev->ethtool_ops->get_tx_csum) | |
446 | return -EOPNOTSUPP; | |
447 | ||
448 | edata.data = dev->ethtool_ops->get_tx_csum(dev); | |
449 | ||
450 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
451 | return -EFAULT; | |
452 | return 0; | |
453 | } | |
454 | ||
455 | static int __ethtool_set_sg(struct net_device *dev, u32 data) | |
456 | { | |
457 | int err; | |
458 | ||
459 | if (!data && dev->ethtool_ops->set_tso) { | |
460 | err = dev->ethtool_ops->set_tso(dev, 0); | |
461 | if (err) | |
462 | return err; | |
463 | } | |
464 | ||
465 | return dev->ethtool_ops->set_sg(dev, data); | |
466 | } | |
467 | ||
468 | static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr) | |
469 | { | |
470 | struct ethtool_value edata; | |
471 | int err; | |
472 | ||
473 | if (!dev->ethtool_ops->set_tx_csum) | |
474 | return -EOPNOTSUPP; | |
475 | ||
476 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
477 | return -EFAULT; | |
478 | ||
479 | if (!edata.data && dev->ethtool_ops->set_sg) { | |
480 | err = __ethtool_set_sg(dev, 0); | |
481 | if (err) | |
482 | return err; | |
483 | } | |
484 | ||
485 | return dev->ethtool_ops->set_tx_csum(dev, edata.data); | |
486 | } | |
487 | ||
488 | static int ethtool_get_sg(struct net_device *dev, char __user *useraddr) | |
489 | { | |
490 | struct ethtool_value edata = { ETHTOOL_GSG }; | |
491 | ||
492 | if (!dev->ethtool_ops->get_sg) | |
493 | return -EOPNOTSUPP; | |
494 | ||
495 | edata.data = dev->ethtool_ops->get_sg(dev); | |
496 | ||
497 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
498 | return -EFAULT; | |
499 | return 0; | |
500 | } | |
501 | ||
502 | static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) | |
503 | { | |
504 | struct ethtool_value edata; | |
505 | ||
506 | if (!dev->ethtool_ops->set_sg) | |
507 | return -EOPNOTSUPP; | |
508 | ||
509 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
510 | return -EFAULT; | |
511 | ||
512 | if (edata.data && | |
513 | !(dev->features & (NETIF_F_IP_CSUM | | |
514 | NETIF_F_NO_CSUM | | |
515 | NETIF_F_HW_CSUM))) | |
516 | return -EINVAL; | |
517 | ||
518 | return __ethtool_set_sg(dev, edata.data); | |
519 | } | |
520 | ||
521 | static int ethtool_get_tso(struct net_device *dev, char __user *useraddr) | |
522 | { | |
523 | struct ethtool_value edata = { ETHTOOL_GTSO }; | |
524 | ||
525 | if (!dev->ethtool_ops->get_tso) | |
526 | return -EOPNOTSUPP; | |
527 | ||
528 | edata.data = dev->ethtool_ops->get_tso(dev); | |
529 | ||
530 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
531 | return -EFAULT; | |
532 | return 0; | |
533 | } | |
534 | ||
535 | static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) | |
536 | { | |
537 | struct ethtool_value edata; | |
538 | ||
539 | if (!dev->ethtool_ops->set_tso) | |
540 | return -EOPNOTSUPP; | |
541 | ||
542 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
543 | return -EFAULT; | |
544 | ||
545 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
546 | return -EINVAL; | |
547 | ||
548 | return dev->ethtool_ops->set_tso(dev, edata.data); | |
549 | } | |
550 | ||
551 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) | |
552 | { | |
553 | struct ethtool_test test; | |
554 | struct ethtool_ops *ops = dev->ethtool_ops; | |
555 | u64 *data; | |
556 | int ret; | |
557 | ||
558 | if (!ops->self_test || !ops->self_test_count) | |
559 | return -EOPNOTSUPP; | |
560 | ||
561 | if (copy_from_user(&test, useraddr, sizeof(test))) | |
562 | return -EFAULT; | |
563 | ||
564 | test.len = ops->self_test_count(dev); | |
565 | data = kmalloc(test.len * sizeof(u64), GFP_USER); | |
566 | if (!data) | |
567 | return -ENOMEM; | |
568 | ||
569 | ops->self_test(dev, &test, data); | |
570 | ||
571 | ret = -EFAULT; | |
572 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
573 | goto out; | |
574 | useraddr += sizeof(test); | |
575 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
576 | goto out; | |
577 | ret = 0; | |
578 | ||
579 | out: | |
580 | kfree(data); | |
581 | return ret; | |
582 | } | |
583 | ||
584 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
585 | { | |
586 | struct ethtool_gstrings gstrings; | |
587 | struct ethtool_ops *ops = dev->ethtool_ops; | |
588 | u8 *data; | |
589 | int ret; | |
590 | ||
591 | if (!ops->get_strings) | |
592 | return -EOPNOTSUPP; | |
593 | ||
594 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) | |
595 | return -EFAULT; | |
596 | ||
597 | switch (gstrings.string_set) { | |
598 | case ETH_SS_TEST: | |
599 | if (!ops->self_test_count) | |
600 | return -EOPNOTSUPP; | |
601 | gstrings.len = ops->self_test_count(dev); | |
602 | break; | |
603 | case ETH_SS_STATS: | |
604 | if (!ops->get_stats_count) | |
605 | return -EOPNOTSUPP; | |
606 | gstrings.len = ops->get_stats_count(dev); | |
607 | break; | |
608 | default: | |
609 | return -EINVAL; | |
610 | } | |
611 | ||
612 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
613 | if (!data) | |
614 | return -ENOMEM; | |
615 | ||
616 | ops->get_strings(dev, gstrings.string_set, data); | |
617 | ||
618 | ret = -EFAULT; | |
619 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
620 | goto out; | |
621 | useraddr += sizeof(gstrings); | |
622 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
623 | goto out; | |
624 | ret = 0; | |
625 | ||
626 | out: | |
627 | kfree(data); | |
628 | return ret; | |
629 | } | |
630 | ||
631 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
632 | { | |
633 | struct ethtool_value id; | |
634 | ||
635 | if (!dev->ethtool_ops->phys_id) | |
636 | return -EOPNOTSUPP; | |
637 | ||
638 | if (copy_from_user(&id, useraddr, sizeof(id))) | |
639 | return -EFAULT; | |
640 | ||
641 | return dev->ethtool_ops->phys_id(dev, id.data); | |
642 | } | |
643 | ||
644 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
645 | { | |
646 | struct ethtool_stats stats; | |
647 | struct ethtool_ops *ops = dev->ethtool_ops; | |
648 | u64 *data; | |
649 | int ret; | |
650 | ||
651 | if (!ops->get_ethtool_stats || !ops->get_stats_count) | |
652 | return -EOPNOTSUPP; | |
653 | ||
654 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
655 | return -EFAULT; | |
656 | ||
657 | stats.n_stats = ops->get_stats_count(dev); | |
658 | data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER); | |
659 | if (!data) | |
660 | return -ENOMEM; | |
661 | ||
662 | ops->get_ethtool_stats(dev, &stats, data); | |
663 | ||
664 | ret = -EFAULT; | |
665 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
666 | goto out; | |
667 | useraddr += sizeof(stats); | |
668 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
669 | goto out; | |
670 | ret = 0; | |
671 | ||
672 | out: | |
673 | kfree(data); | |
674 | return ret; | |
675 | } | |
676 | ||
677 | /* The main entry point in this file. Called from net/core/dev.c */ | |
678 | ||
679 | int dev_ethtool(struct ifreq *ifr) | |
680 | { | |
681 | struct net_device *dev = __dev_get_by_name(ifr->ifr_name); | |
682 | void __user *useraddr = ifr->ifr_data; | |
683 | u32 ethcmd; | |
684 | int rc; | |
685 | ||
686 | /* | |
687 | * XXX: This can be pushed down into the ethtool_* handlers that | |
688 | * need it. Keep existing behaviour for the moment. | |
689 | */ | |
690 | if (!capable(CAP_NET_ADMIN)) | |
691 | return -EPERM; | |
692 | ||
693 | if (!dev || !netif_device_present(dev)) | |
694 | return -ENODEV; | |
695 | ||
696 | if (!dev->ethtool_ops) | |
697 | goto ioctl; | |
698 | ||
699 | if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) | |
700 | return -EFAULT; | |
701 | ||
702 | if(dev->ethtool_ops->begin) | |
703 | if ((rc = dev->ethtool_ops->begin(dev)) < 0) | |
704 | return rc; | |
705 | ||
706 | switch (ethcmd) { | |
707 | case ETHTOOL_GSET: | |
708 | rc = ethtool_get_settings(dev, useraddr); | |
709 | break; | |
710 | case ETHTOOL_SSET: | |
711 | rc = ethtool_set_settings(dev, useraddr); | |
712 | break; | |
713 | case ETHTOOL_GDRVINFO: | |
714 | rc = ethtool_get_drvinfo(dev, useraddr); | |
715 | ||
716 | break; | |
717 | case ETHTOOL_GREGS: | |
718 | rc = ethtool_get_regs(dev, useraddr); | |
719 | break; | |
720 | case ETHTOOL_GWOL: | |
721 | rc = ethtool_get_wol(dev, useraddr); | |
722 | break; | |
723 | case ETHTOOL_SWOL: | |
724 | rc = ethtool_set_wol(dev, useraddr); | |
725 | break; | |
726 | case ETHTOOL_GMSGLVL: | |
727 | rc = ethtool_get_msglevel(dev, useraddr); | |
728 | break; | |
729 | case ETHTOOL_SMSGLVL: | |
730 | rc = ethtool_set_msglevel(dev, useraddr); | |
731 | break; | |
732 | case ETHTOOL_NWAY_RST: | |
733 | rc = ethtool_nway_reset(dev); | |
734 | break; | |
735 | case ETHTOOL_GLINK: | |
736 | rc = ethtool_get_link(dev, useraddr); | |
737 | break; | |
738 | case ETHTOOL_GEEPROM: | |
739 | rc = ethtool_get_eeprom(dev, useraddr); | |
740 | break; | |
741 | case ETHTOOL_SEEPROM: | |
742 | rc = ethtool_set_eeprom(dev, useraddr); | |
743 | break; | |
744 | case ETHTOOL_GCOALESCE: | |
745 | rc = ethtool_get_coalesce(dev, useraddr); | |
746 | break; | |
747 | case ETHTOOL_SCOALESCE: | |
748 | rc = ethtool_set_coalesce(dev, useraddr); | |
749 | break; | |
750 | case ETHTOOL_GRINGPARAM: | |
751 | rc = ethtool_get_ringparam(dev, useraddr); | |
752 | break; | |
753 | case ETHTOOL_SRINGPARAM: | |
754 | rc = ethtool_set_ringparam(dev, useraddr); | |
755 | break; | |
756 | case ETHTOOL_GPAUSEPARAM: | |
757 | rc = ethtool_get_pauseparam(dev, useraddr); | |
758 | break; | |
759 | case ETHTOOL_SPAUSEPARAM: | |
760 | rc = ethtool_set_pauseparam(dev, useraddr); | |
761 | break; | |
762 | case ETHTOOL_GRXCSUM: | |
763 | rc = ethtool_get_rx_csum(dev, useraddr); | |
764 | break; | |
765 | case ETHTOOL_SRXCSUM: | |
766 | rc = ethtool_set_rx_csum(dev, useraddr); | |
767 | break; | |
768 | case ETHTOOL_GTXCSUM: | |
769 | rc = ethtool_get_tx_csum(dev, useraddr); | |
770 | break; | |
771 | case ETHTOOL_STXCSUM: | |
772 | rc = ethtool_set_tx_csum(dev, useraddr); | |
773 | break; | |
774 | case ETHTOOL_GSG: | |
775 | rc = ethtool_get_sg(dev, useraddr); | |
776 | break; | |
777 | case ETHTOOL_SSG: | |
778 | rc = ethtool_set_sg(dev, useraddr); | |
779 | break; | |
780 | case ETHTOOL_GTSO: | |
781 | rc = ethtool_get_tso(dev, useraddr); | |
782 | break; | |
783 | case ETHTOOL_STSO: | |
784 | rc = ethtool_set_tso(dev, useraddr); | |
785 | break; | |
786 | case ETHTOOL_TEST: | |
787 | rc = ethtool_self_test(dev, useraddr); | |
788 | break; | |
789 | case ETHTOOL_GSTRINGS: | |
790 | rc = ethtool_get_strings(dev, useraddr); | |
791 | break; | |
792 | case ETHTOOL_PHYS_ID: | |
793 | rc = ethtool_phys_id(dev, useraddr); | |
794 | break; | |
795 | case ETHTOOL_GSTATS: | |
796 | rc = ethtool_get_stats(dev, useraddr); | |
797 | break; | |
798 | default: | |
799 | rc = -EOPNOTSUPP; | |
800 | } | |
801 | ||
802 | if(dev->ethtool_ops->complete) | |
803 | dev->ethtool_ops->complete(dev); | |
804 | return rc; | |
805 | ||
806 | ioctl: | |
807 | if (dev->do_ioctl) | |
808 | return dev->do_ioctl(dev, ifr, SIOCETHTOOL); | |
809 | return -EOPNOTSUPP; | |
810 | } | |
811 | ||
812 | EXPORT_SYMBOL(dev_ethtool); | |
813 | EXPORT_SYMBOL(ethtool_op_get_link); | |
814 | EXPORT_SYMBOL(ethtool_op_get_sg); | |
815 | EXPORT_SYMBOL(ethtool_op_get_tso); | |
816 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); | |
817 | EXPORT_SYMBOL(ethtool_op_set_sg); | |
818 | EXPORT_SYMBOL(ethtool_op_set_tso); | |
819 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); |