Commit | Line | Data |
---|---|---|
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 | { | |
69f6a0fa | 32 | return (dev->features & (NETIF_F_IP_CSUM | NETIF_F_HW_CSUM)) != 0; |
1da177e4 LT |
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 | ||
69f6a0fa JM |
45 | int 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 | } | |
1da177e4 LT |
54 | u32 ethtool_op_get_sg(struct net_device *dev) |
55 | { | |
56 | return (dev->features & NETIF_F_SG) != 0; | |
57 | } | |
58 | ||
59 | int 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 | ||
69 | u32 ethtool_op_get_tso(struct net_device *dev) | |
70 | { | |
71 | return (dev->features & NETIF_F_TSO) != 0; | |
72 | } | |
73 | ||
74 | int 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 | ||
84 | /* Handlers for each ethtool command */ | |
85 | ||
86 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) | |
87 | { | |
88 | struct ethtool_cmd cmd = { ETHTOOL_GSET }; | |
89 | int err; | |
90 | ||
91 | if (!dev->ethtool_ops->get_settings) | |
92 | return -EOPNOTSUPP; | |
93 | ||
94 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
95 | if (err < 0) | |
96 | return err; | |
97 | ||
98 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
99 | return -EFAULT; | |
100 | return 0; | |
101 | } | |
102 | ||
103 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) | |
104 | { | |
105 | struct ethtool_cmd cmd; | |
106 | ||
107 | if (!dev->ethtool_ops->set_settings) | |
108 | return -EOPNOTSUPP; | |
109 | ||
110 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
111 | return -EFAULT; | |
112 | ||
113 | return dev->ethtool_ops->set_settings(dev, &cmd); | |
114 | } | |
115 | ||
116 | static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr) | |
117 | { | |
118 | struct ethtool_drvinfo info; | |
119 | struct ethtool_ops *ops = dev->ethtool_ops; | |
120 | ||
121 | if (!ops->get_drvinfo) | |
122 | return -EOPNOTSUPP; | |
123 | ||
124 | memset(&info, 0, sizeof(info)); | |
125 | info.cmd = ETHTOOL_GDRVINFO; | |
126 | ops->get_drvinfo(dev, &info); | |
127 | ||
128 | if (ops->self_test_count) | |
129 | info.testinfo_len = ops->self_test_count(dev); | |
130 | if (ops->get_stats_count) | |
131 | info.n_stats = ops->get_stats_count(dev); | |
132 | if (ops->get_regs_len) | |
133 | info.regdump_len = ops->get_regs_len(dev); | |
134 | if (ops->get_eeprom_len) | |
135 | info.eedump_len = ops->get_eeprom_len(dev); | |
136 | ||
137 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
138 | return -EFAULT; | |
139 | return 0; | |
140 | } | |
141 | ||
142 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) | |
143 | { | |
144 | struct ethtool_regs regs; | |
145 | struct ethtool_ops *ops = dev->ethtool_ops; | |
146 | void *regbuf; | |
147 | int reglen, ret; | |
148 | ||
149 | if (!ops->get_regs || !ops->get_regs_len) | |
150 | return -EOPNOTSUPP; | |
151 | ||
152 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
153 | return -EFAULT; | |
154 | ||
155 | reglen = ops->get_regs_len(dev); | |
156 | if (regs.len > reglen) | |
157 | regs.len = reglen; | |
158 | ||
159 | regbuf = kmalloc(reglen, GFP_USER); | |
160 | if (!regbuf) | |
161 | return -ENOMEM; | |
162 | ||
163 | ops->get_regs(dev, ®s, regbuf); | |
164 | ||
165 | ret = -EFAULT; | |
166 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
167 | goto out; | |
168 | useraddr += offsetof(struct ethtool_regs, data); | |
169 | if (copy_to_user(useraddr, regbuf, regs.len)) | |
170 | goto out; | |
171 | ret = 0; | |
172 | ||
173 | out: | |
174 | kfree(regbuf); | |
175 | return ret; | |
176 | } | |
177 | ||
178 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) | |
179 | { | |
180 | struct ethtool_wolinfo wol = { ETHTOOL_GWOL }; | |
181 | ||
182 | if (!dev->ethtool_ops->get_wol) | |
183 | return -EOPNOTSUPP; | |
184 | ||
185 | dev->ethtool_ops->get_wol(dev, &wol); | |
186 | ||
187 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
188 | return -EFAULT; | |
189 | return 0; | |
190 | } | |
191 | ||
192 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
193 | { | |
194 | struct ethtool_wolinfo wol; | |
195 | ||
196 | if (!dev->ethtool_ops->set_wol) | |
197 | return -EOPNOTSUPP; | |
198 | ||
199 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
200 | return -EFAULT; | |
201 | ||
202 | return dev->ethtool_ops->set_wol(dev, &wol); | |
203 | } | |
204 | ||
205 | static int ethtool_get_msglevel(struct net_device *dev, char __user *useraddr) | |
206 | { | |
207 | struct ethtool_value edata = { ETHTOOL_GMSGLVL }; | |
208 | ||
209 | if (!dev->ethtool_ops->get_msglevel) | |
210 | return -EOPNOTSUPP; | |
211 | ||
212 | edata.data = dev->ethtool_ops->get_msglevel(dev); | |
213 | ||
214 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
215 | return -EFAULT; | |
216 | return 0; | |
217 | } | |
218 | ||
219 | static int ethtool_set_msglevel(struct net_device *dev, char __user *useraddr) | |
220 | { | |
221 | struct ethtool_value edata; | |
222 | ||
223 | if (!dev->ethtool_ops->set_msglevel) | |
224 | return -EOPNOTSUPP; | |
225 | ||
226 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
227 | return -EFAULT; | |
228 | ||
229 | dev->ethtool_ops->set_msglevel(dev, edata.data); | |
230 | return 0; | |
231 | } | |
232 | ||
233 | static int ethtool_nway_reset(struct net_device *dev) | |
234 | { | |
235 | if (!dev->ethtool_ops->nway_reset) | |
236 | return -EOPNOTSUPP; | |
237 | ||
238 | return dev->ethtool_ops->nway_reset(dev); | |
239 | } | |
240 | ||
241 | static int ethtool_get_link(struct net_device *dev, void __user *useraddr) | |
242 | { | |
243 | struct ethtool_value edata = { ETHTOOL_GLINK }; | |
244 | ||
245 | if (!dev->ethtool_ops->get_link) | |
246 | return -EOPNOTSUPP; | |
247 | ||
248 | edata.data = dev->ethtool_ops->get_link(dev); | |
249 | ||
250 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
251 | return -EFAULT; | |
252 | return 0; | |
253 | } | |
254 | ||
255 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) | |
256 | { | |
257 | struct ethtool_eeprom eeprom; | |
258 | struct ethtool_ops *ops = dev->ethtool_ops; | |
259 | u8 *data; | |
260 | int ret; | |
261 | ||
262 | if (!ops->get_eeprom || !ops->get_eeprom_len) | |
263 | return -EOPNOTSUPP; | |
264 | ||
265 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
266 | return -EFAULT; | |
267 | ||
268 | /* Check for wrap and zero */ | |
269 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
270 | return -EINVAL; | |
271 | ||
272 | /* Check for exceeding total eeprom len */ | |
273 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
274 | return -EINVAL; | |
275 | ||
276 | data = kmalloc(eeprom.len, GFP_USER); | |
277 | if (!data) | |
278 | return -ENOMEM; | |
279 | ||
280 | ret = -EFAULT; | |
281 | if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len)) | |
282 | goto out; | |
283 | ||
284 | ret = ops->get_eeprom(dev, &eeprom, data); | |
285 | if (ret) | |
286 | goto out; | |
287 | ||
288 | ret = -EFAULT; | |
289 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
290 | goto out; | |
291 | if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len)) | |
292 | goto out; | |
293 | ret = 0; | |
294 | ||
295 | out: | |
296 | kfree(data); | |
297 | return ret; | |
298 | } | |
299 | ||
300 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) | |
301 | { | |
302 | struct ethtool_eeprom eeprom; | |
303 | struct ethtool_ops *ops = dev->ethtool_ops; | |
304 | u8 *data; | |
305 | int ret; | |
306 | ||
307 | if (!ops->set_eeprom || !ops->get_eeprom_len) | |
308 | return -EOPNOTSUPP; | |
309 | ||
310 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
311 | return -EFAULT; | |
312 | ||
313 | /* Check for wrap and zero */ | |
314 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
315 | return -EINVAL; | |
316 | ||
317 | /* Check for exceeding total eeprom len */ | |
318 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
319 | return -EINVAL; | |
320 | ||
321 | data = kmalloc(eeprom.len, GFP_USER); | |
322 | if (!data) | |
323 | return -ENOMEM; | |
324 | ||
325 | ret = -EFAULT; | |
326 | if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len)) | |
327 | goto out; | |
328 | ||
329 | ret = ops->set_eeprom(dev, &eeprom, data); | |
330 | if (ret) | |
331 | goto out; | |
332 | ||
333 | if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len)) | |
334 | ret = -EFAULT; | |
335 | ||
336 | out: | |
337 | kfree(data); | |
338 | return ret; | |
339 | } | |
340 | ||
341 | static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr) | |
342 | { | |
343 | struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE }; | |
344 | ||
345 | if (!dev->ethtool_ops->get_coalesce) | |
346 | return -EOPNOTSUPP; | |
347 | ||
348 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
349 | ||
350 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
351 | return -EFAULT; | |
352 | return 0; | |
353 | } | |
354 | ||
355 | static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr) | |
356 | { | |
357 | struct ethtool_coalesce coalesce; | |
358 | ||
fa04ae5c | 359 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
360 | return -EOPNOTSUPP; |
361 | ||
362 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
363 | return -EFAULT; | |
364 | ||
365 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
366 | } | |
367 | ||
368 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
369 | { | |
370 | struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM }; | |
371 | ||
372 | if (!dev->ethtool_ops->get_ringparam) | |
373 | return -EOPNOTSUPP; | |
374 | ||
375 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
376 | ||
377 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
378 | return -EFAULT; | |
379 | return 0; | |
380 | } | |
381 | ||
382 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
383 | { | |
384 | struct ethtool_ringparam ringparam; | |
385 | ||
386 | if (!dev->ethtool_ops->set_ringparam) | |
387 | return -EOPNOTSUPP; | |
388 | ||
389 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
390 | return -EFAULT; | |
391 | ||
392 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
393 | } | |
394 | ||
395 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) | |
396 | { | |
397 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
398 | ||
399 | if (!dev->ethtool_ops->get_pauseparam) | |
400 | return -EOPNOTSUPP; | |
401 | ||
402 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
403 | ||
404 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
405 | return -EFAULT; | |
406 | return 0; | |
407 | } | |
408 | ||
409 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
410 | { | |
411 | struct ethtool_pauseparam pauseparam; | |
412 | ||
413 | if (!dev->ethtool_ops->get_pauseparam) | |
414 | return -EOPNOTSUPP; | |
415 | ||
416 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
417 | return -EFAULT; | |
418 | ||
419 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
420 | } | |
421 | ||
422 | static int ethtool_get_rx_csum(struct net_device *dev, char __user *useraddr) | |
423 | { | |
424 | struct ethtool_value edata = { ETHTOOL_GRXCSUM }; | |
425 | ||
426 | if (!dev->ethtool_ops->get_rx_csum) | |
427 | return -EOPNOTSUPP; | |
428 | ||
429 | edata.data = dev->ethtool_ops->get_rx_csum(dev); | |
430 | ||
431 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
432 | return -EFAULT; | |
433 | return 0; | |
434 | } | |
435 | ||
436 | static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr) | |
437 | { | |
438 | struct ethtool_value edata; | |
439 | ||
440 | if (!dev->ethtool_ops->set_rx_csum) | |
441 | return -EOPNOTSUPP; | |
442 | ||
443 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
444 | return -EFAULT; | |
445 | ||
446 | dev->ethtool_ops->set_rx_csum(dev, edata.data); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | static int ethtool_get_tx_csum(struct net_device *dev, char __user *useraddr) | |
451 | { | |
452 | struct ethtool_value edata = { ETHTOOL_GTXCSUM }; | |
453 | ||
454 | if (!dev->ethtool_ops->get_tx_csum) | |
455 | return -EOPNOTSUPP; | |
456 | ||
457 | edata.data = dev->ethtool_ops->get_tx_csum(dev); | |
458 | ||
459 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
460 | return -EFAULT; | |
461 | return 0; | |
462 | } | |
463 | ||
464 | static int __ethtool_set_sg(struct net_device *dev, u32 data) | |
465 | { | |
466 | int err; | |
467 | ||
468 | if (!data && dev->ethtool_ops->set_tso) { | |
469 | err = dev->ethtool_ops->set_tso(dev, 0); | |
470 | if (err) | |
471 | return err; | |
472 | } | |
473 | ||
474 | return dev->ethtool_ops->set_sg(dev, data); | |
475 | } | |
476 | ||
477 | static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr) | |
478 | { | |
479 | struct ethtool_value edata; | |
480 | int err; | |
481 | ||
482 | if (!dev->ethtool_ops->set_tx_csum) | |
483 | return -EOPNOTSUPP; | |
484 | ||
485 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
486 | return -EFAULT; | |
487 | ||
488 | if (!edata.data && dev->ethtool_ops->set_sg) { | |
489 | err = __ethtool_set_sg(dev, 0); | |
490 | if (err) | |
491 | return err; | |
492 | } | |
493 | ||
494 | return dev->ethtool_ops->set_tx_csum(dev, edata.data); | |
495 | } | |
496 | ||
497 | static int ethtool_get_sg(struct net_device *dev, char __user *useraddr) | |
498 | { | |
499 | struct ethtool_value edata = { ETHTOOL_GSG }; | |
500 | ||
501 | if (!dev->ethtool_ops->get_sg) | |
502 | return -EOPNOTSUPP; | |
503 | ||
504 | edata.data = dev->ethtool_ops->get_sg(dev); | |
505 | ||
506 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
507 | return -EFAULT; | |
508 | return 0; | |
509 | } | |
510 | ||
511 | static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) | |
512 | { | |
513 | struct ethtool_value edata; | |
514 | ||
515 | if (!dev->ethtool_ops->set_sg) | |
516 | return -EOPNOTSUPP; | |
517 | ||
518 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
519 | return -EFAULT; | |
520 | ||
521 | if (edata.data && | |
522 | !(dev->features & (NETIF_F_IP_CSUM | | |
523 | NETIF_F_NO_CSUM | | |
524 | NETIF_F_HW_CSUM))) | |
525 | return -EINVAL; | |
526 | ||
527 | return __ethtool_set_sg(dev, edata.data); | |
528 | } | |
529 | ||
530 | static int ethtool_get_tso(struct net_device *dev, char __user *useraddr) | |
531 | { | |
532 | struct ethtool_value edata = { ETHTOOL_GTSO }; | |
533 | ||
534 | if (!dev->ethtool_ops->get_tso) | |
535 | return -EOPNOTSUPP; | |
536 | ||
537 | edata.data = dev->ethtool_ops->get_tso(dev); | |
538 | ||
539 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
540 | return -EFAULT; | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) | |
545 | { | |
546 | struct ethtool_value edata; | |
547 | ||
548 | if (!dev->ethtool_ops->set_tso) | |
549 | return -EOPNOTSUPP; | |
550 | ||
551 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
552 | return -EFAULT; | |
553 | ||
554 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
555 | return -EINVAL; | |
556 | ||
557 | return dev->ethtool_ops->set_tso(dev, edata.data); | |
558 | } | |
559 | ||
560 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) | |
561 | { | |
562 | struct ethtool_test test; | |
563 | struct ethtool_ops *ops = dev->ethtool_ops; | |
564 | u64 *data; | |
565 | int ret; | |
566 | ||
567 | if (!ops->self_test || !ops->self_test_count) | |
568 | return -EOPNOTSUPP; | |
569 | ||
570 | if (copy_from_user(&test, useraddr, sizeof(test))) | |
571 | return -EFAULT; | |
572 | ||
573 | test.len = ops->self_test_count(dev); | |
574 | data = kmalloc(test.len * sizeof(u64), GFP_USER); | |
575 | if (!data) | |
576 | return -ENOMEM; | |
577 | ||
578 | ops->self_test(dev, &test, data); | |
579 | ||
580 | ret = -EFAULT; | |
581 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
582 | goto out; | |
583 | useraddr += sizeof(test); | |
584 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
585 | goto out; | |
586 | ret = 0; | |
587 | ||
588 | out: | |
589 | kfree(data); | |
590 | return ret; | |
591 | } | |
592 | ||
593 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
594 | { | |
595 | struct ethtool_gstrings gstrings; | |
596 | struct ethtool_ops *ops = dev->ethtool_ops; | |
597 | u8 *data; | |
598 | int ret; | |
599 | ||
600 | if (!ops->get_strings) | |
601 | return -EOPNOTSUPP; | |
602 | ||
603 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) | |
604 | return -EFAULT; | |
605 | ||
606 | switch (gstrings.string_set) { | |
607 | case ETH_SS_TEST: | |
608 | if (!ops->self_test_count) | |
609 | return -EOPNOTSUPP; | |
610 | gstrings.len = ops->self_test_count(dev); | |
611 | break; | |
612 | case ETH_SS_STATS: | |
613 | if (!ops->get_stats_count) | |
614 | return -EOPNOTSUPP; | |
615 | gstrings.len = ops->get_stats_count(dev); | |
616 | break; | |
617 | default: | |
618 | return -EINVAL; | |
619 | } | |
620 | ||
621 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
622 | if (!data) | |
623 | return -ENOMEM; | |
624 | ||
625 | ops->get_strings(dev, gstrings.string_set, data); | |
626 | ||
627 | ret = -EFAULT; | |
628 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
629 | goto out; | |
630 | useraddr += sizeof(gstrings); | |
631 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
632 | goto out; | |
633 | ret = 0; | |
634 | ||
635 | out: | |
636 | kfree(data); | |
637 | return ret; | |
638 | } | |
639 | ||
640 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
641 | { | |
642 | struct ethtool_value id; | |
643 | ||
644 | if (!dev->ethtool_ops->phys_id) | |
645 | return -EOPNOTSUPP; | |
646 | ||
647 | if (copy_from_user(&id, useraddr, sizeof(id))) | |
648 | return -EFAULT; | |
649 | ||
650 | return dev->ethtool_ops->phys_id(dev, id.data); | |
651 | } | |
652 | ||
653 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
654 | { | |
655 | struct ethtool_stats stats; | |
656 | struct ethtool_ops *ops = dev->ethtool_ops; | |
657 | u64 *data; | |
658 | int ret; | |
659 | ||
660 | if (!ops->get_ethtool_stats || !ops->get_stats_count) | |
661 | return -EOPNOTSUPP; | |
662 | ||
663 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
664 | return -EFAULT; | |
665 | ||
666 | stats.n_stats = ops->get_stats_count(dev); | |
667 | data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER); | |
668 | if (!data) | |
669 | return -ENOMEM; | |
670 | ||
671 | ops->get_ethtool_stats(dev, &stats, data); | |
672 | ||
673 | ret = -EFAULT; | |
674 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
675 | goto out; | |
676 | useraddr += sizeof(stats); | |
677 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
678 | goto out; | |
679 | ret = 0; | |
680 | ||
681 | out: | |
682 | kfree(data); | |
683 | return ret; | |
684 | } | |
685 | ||
686 | /* The main entry point in this file. Called from net/core/dev.c */ | |
687 | ||
688 | int dev_ethtool(struct ifreq *ifr) | |
689 | { | |
690 | struct net_device *dev = __dev_get_by_name(ifr->ifr_name); | |
691 | void __user *useraddr = ifr->ifr_data; | |
692 | u32 ethcmd; | |
693 | int rc; | |
81e81575 | 694 | unsigned long old_features; |
1da177e4 LT |
695 | |
696 | /* | |
697 | * XXX: This can be pushed down into the ethtool_* handlers that | |
698 | * need it. Keep existing behaviour for the moment. | |
699 | */ | |
700 | if (!capable(CAP_NET_ADMIN)) | |
701 | return -EPERM; | |
702 | ||
703 | if (!dev || !netif_device_present(dev)) | |
704 | return -ENODEV; | |
705 | ||
706 | if (!dev->ethtool_ops) | |
707 | goto ioctl; | |
708 | ||
709 | if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) | |
710 | return -EFAULT; | |
711 | ||
712 | if(dev->ethtool_ops->begin) | |
713 | if ((rc = dev->ethtool_ops->begin(dev)) < 0) | |
714 | return rc; | |
715 | ||
d8a33ac4 SH |
716 | old_features = dev->features; |
717 | ||
1da177e4 LT |
718 | switch (ethcmd) { |
719 | case ETHTOOL_GSET: | |
720 | rc = ethtool_get_settings(dev, useraddr); | |
721 | break; | |
722 | case ETHTOOL_SSET: | |
723 | rc = ethtool_set_settings(dev, useraddr); | |
724 | break; | |
725 | case ETHTOOL_GDRVINFO: | |
726 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
727 | break; |
728 | case ETHTOOL_GREGS: | |
729 | rc = ethtool_get_regs(dev, useraddr); | |
730 | break; | |
731 | case ETHTOOL_GWOL: | |
732 | rc = ethtool_get_wol(dev, useraddr); | |
733 | break; | |
734 | case ETHTOOL_SWOL: | |
735 | rc = ethtool_set_wol(dev, useraddr); | |
736 | break; | |
737 | case ETHTOOL_GMSGLVL: | |
738 | rc = ethtool_get_msglevel(dev, useraddr); | |
739 | break; | |
740 | case ETHTOOL_SMSGLVL: | |
741 | rc = ethtool_set_msglevel(dev, useraddr); | |
742 | break; | |
743 | case ETHTOOL_NWAY_RST: | |
744 | rc = ethtool_nway_reset(dev); | |
745 | break; | |
746 | case ETHTOOL_GLINK: | |
747 | rc = ethtool_get_link(dev, useraddr); | |
748 | break; | |
749 | case ETHTOOL_GEEPROM: | |
750 | rc = ethtool_get_eeprom(dev, useraddr); | |
751 | break; | |
752 | case ETHTOOL_SEEPROM: | |
753 | rc = ethtool_set_eeprom(dev, useraddr); | |
754 | break; | |
755 | case ETHTOOL_GCOALESCE: | |
756 | rc = ethtool_get_coalesce(dev, useraddr); | |
757 | break; | |
758 | case ETHTOOL_SCOALESCE: | |
759 | rc = ethtool_set_coalesce(dev, useraddr); | |
760 | break; | |
761 | case ETHTOOL_GRINGPARAM: | |
762 | rc = ethtool_get_ringparam(dev, useraddr); | |
763 | break; | |
764 | case ETHTOOL_SRINGPARAM: | |
765 | rc = ethtool_set_ringparam(dev, useraddr); | |
766 | break; | |
767 | case ETHTOOL_GPAUSEPARAM: | |
768 | rc = ethtool_get_pauseparam(dev, useraddr); | |
769 | break; | |
770 | case ETHTOOL_SPAUSEPARAM: | |
771 | rc = ethtool_set_pauseparam(dev, useraddr); | |
772 | break; | |
773 | case ETHTOOL_GRXCSUM: | |
774 | rc = ethtool_get_rx_csum(dev, useraddr); | |
775 | break; | |
776 | case ETHTOOL_SRXCSUM: | |
777 | rc = ethtool_set_rx_csum(dev, useraddr); | |
778 | break; | |
779 | case ETHTOOL_GTXCSUM: | |
780 | rc = ethtool_get_tx_csum(dev, useraddr); | |
781 | break; | |
782 | case ETHTOOL_STXCSUM: | |
783 | rc = ethtool_set_tx_csum(dev, useraddr); | |
784 | break; | |
785 | case ETHTOOL_GSG: | |
786 | rc = ethtool_get_sg(dev, useraddr); | |
787 | break; | |
788 | case ETHTOOL_SSG: | |
789 | rc = ethtool_set_sg(dev, useraddr); | |
790 | break; | |
791 | case ETHTOOL_GTSO: | |
792 | rc = ethtool_get_tso(dev, useraddr); | |
793 | break; | |
794 | case ETHTOOL_STSO: | |
795 | rc = ethtool_set_tso(dev, useraddr); | |
796 | break; | |
797 | case ETHTOOL_TEST: | |
798 | rc = ethtool_self_test(dev, useraddr); | |
799 | break; | |
800 | case ETHTOOL_GSTRINGS: | |
801 | rc = ethtool_get_strings(dev, useraddr); | |
802 | break; | |
803 | case ETHTOOL_PHYS_ID: | |
804 | rc = ethtool_phys_id(dev, useraddr); | |
805 | break; | |
806 | case ETHTOOL_GSTATS: | |
807 | rc = ethtool_get_stats(dev, useraddr); | |
808 | break; | |
809 | default: | |
810 | rc = -EOPNOTSUPP; | |
811 | } | |
812 | ||
813 | if(dev->ethtool_ops->complete) | |
814 | dev->ethtool_ops->complete(dev); | |
d8a33ac4 SH |
815 | |
816 | if (old_features != dev->features) | |
817 | netdev_features_change(dev); | |
818 | ||
1da177e4 LT |
819 | return rc; |
820 | ||
821 | ioctl: | |
822 | if (dev->do_ioctl) | |
823 | return dev->do_ioctl(dev, ifr, SIOCETHTOOL); | |
824 | return -EOPNOTSUPP; | |
825 | } | |
826 | ||
827 | EXPORT_SYMBOL(dev_ethtool); | |
828 | EXPORT_SYMBOL(ethtool_op_get_link); | |
829 | EXPORT_SYMBOL(ethtool_op_get_sg); | |
830 | EXPORT_SYMBOL(ethtool_op_get_tso); | |
831 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); | |
832 | EXPORT_SYMBOL(ethtool_op_set_sg); | |
833 | EXPORT_SYMBOL(ethtool_op_set_tso); | |
834 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); | |
69f6a0fa | 835 | EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |