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