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 | |
61a44b9c | 6 | * the information ethtool needs. |
1da177e4 | 7 | * |
61a44b9c MW |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
1da177e4 LT |
12 | */ |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/types.h> | |
4fc268d2 | 16 | #include <linux/capability.h> |
1da177e4 LT |
17 | #include <linux/errno.h> |
18 | #include <linux/ethtool.h> | |
19 | #include <linux/netdevice.h> | |
20 | #include <asm/uaccess.h> | |
21 | ||
4ec93edb | 22 | /* |
1da177e4 LT |
23 | * Some useful ethtool_ops methods that're device independent. |
24 | * If we find that all drivers want to do the same thing here, | |
25 | * we can turn these into dev_() function calls. | |
26 | */ | |
27 | ||
28 | u32 ethtool_op_get_link(struct net_device *dev) | |
29 | { | |
30 | return netif_carrier_ok(dev) ? 1 : 0; | |
31 | } | |
32 | ||
33 | u32 ethtool_op_get_tx_csum(struct net_device *dev) | |
34 | { | |
8648b305 | 35 | return (dev->features & NETIF_F_ALL_CSUM) != 0; |
1da177e4 LT |
36 | } |
37 | ||
38 | int ethtool_op_set_tx_csum(struct net_device *dev, u32 data) | |
39 | { | |
40 | if (data) | |
41 | dev->features |= NETIF_F_IP_CSUM; | |
42 | else | |
43 | dev->features &= ~NETIF_F_IP_CSUM; | |
44 | ||
45 | return 0; | |
46 | } | |
47 | ||
69f6a0fa JM |
48 | int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data) |
49 | { | |
50 | if (data) | |
51 | dev->features |= NETIF_F_HW_CSUM; | |
52 | else | |
53 | dev->features &= ~NETIF_F_HW_CSUM; | |
54 | ||
55 | return 0; | |
56 | } | |
6460d948 MC |
57 | |
58 | int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data) | |
59 | { | |
60 | if (data) | |
61 | dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; | |
62 | else | |
63 | dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); | |
64 | ||
65 | return 0; | |
66 | } | |
67 | ||
1da177e4 LT |
68 | u32 ethtool_op_get_sg(struct net_device *dev) |
69 | { | |
70 | return (dev->features & NETIF_F_SG) != 0; | |
71 | } | |
72 | ||
73 | int ethtool_op_set_sg(struct net_device *dev, u32 data) | |
74 | { | |
75 | if (data) | |
76 | dev->features |= NETIF_F_SG; | |
77 | else | |
78 | dev->features &= ~NETIF_F_SG; | |
79 | ||
80 | return 0; | |
81 | } | |
82 | ||
83 | u32 ethtool_op_get_tso(struct net_device *dev) | |
84 | { | |
85 | return (dev->features & NETIF_F_TSO) != 0; | |
86 | } | |
87 | ||
88 | int ethtool_op_set_tso(struct net_device *dev, u32 data) | |
89 | { | |
90 | if (data) | |
91 | dev->features |= NETIF_F_TSO; | |
92 | else | |
93 | dev->features &= ~NETIF_F_TSO; | |
94 | ||
95 | return 0; | |
96 | } | |
97 | ||
e89e9cf5 AR |
98 | u32 ethtool_op_get_ufo(struct net_device *dev) |
99 | { | |
100 | return (dev->features & NETIF_F_UFO) != 0; | |
101 | } | |
102 | ||
103 | int ethtool_op_set_ufo(struct net_device *dev, u32 data) | |
104 | { | |
105 | if (data) | |
106 | dev->features |= NETIF_F_UFO; | |
107 | else | |
108 | dev->features &= ~NETIF_F_UFO; | |
109 | return 0; | |
110 | } | |
111 | ||
1da177e4 LT |
112 | /* Handlers for each ethtool command */ |
113 | ||
114 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) | |
115 | { | |
116 | struct ethtool_cmd cmd = { ETHTOOL_GSET }; | |
117 | int err; | |
118 | ||
119 | if (!dev->ethtool_ops->get_settings) | |
120 | return -EOPNOTSUPP; | |
121 | ||
122 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
123 | if (err < 0) | |
124 | return err; | |
125 | ||
126 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
127 | return -EFAULT; | |
128 | return 0; | |
129 | } | |
130 | ||
131 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) | |
132 | { | |
133 | struct ethtool_cmd cmd; | |
134 | ||
135 | if (!dev->ethtool_ops->set_settings) | |
136 | return -EOPNOTSUPP; | |
137 | ||
138 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
139 | return -EFAULT; | |
140 | ||
141 | return dev->ethtool_ops->set_settings(dev, &cmd); | |
142 | } | |
143 | ||
144 | static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr) | |
145 | { | |
146 | struct ethtool_drvinfo info; | |
76fd8593 | 147 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
148 | |
149 | if (!ops->get_drvinfo) | |
150 | return -EOPNOTSUPP; | |
151 | ||
152 | memset(&info, 0, sizeof(info)); | |
153 | info.cmd = ETHTOOL_GDRVINFO; | |
154 | ops->get_drvinfo(dev, &info); | |
155 | ||
156 | if (ops->self_test_count) | |
157 | info.testinfo_len = ops->self_test_count(dev); | |
158 | if (ops->get_stats_count) | |
159 | info.n_stats = ops->get_stats_count(dev); | |
160 | if (ops->get_regs_len) | |
161 | info.regdump_len = ops->get_regs_len(dev); | |
162 | if (ops->get_eeprom_len) | |
163 | info.eedump_len = ops->get_eeprom_len(dev); | |
164 | ||
165 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
166 | return -EFAULT; | |
167 | return 0; | |
168 | } | |
169 | ||
170 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) | |
171 | { | |
172 | struct ethtool_regs regs; | |
76fd8593 | 173 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
174 | void *regbuf; |
175 | int reglen, ret; | |
176 | ||
177 | if (!ops->get_regs || !ops->get_regs_len) | |
178 | return -EOPNOTSUPP; | |
179 | ||
180 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
181 | return -EFAULT; | |
182 | ||
183 | reglen = ops->get_regs_len(dev); | |
184 | if (regs.len > reglen) | |
185 | regs.len = reglen; | |
186 | ||
187 | regbuf = kmalloc(reglen, GFP_USER); | |
188 | if (!regbuf) | |
189 | return -ENOMEM; | |
190 | ||
191 | ops->get_regs(dev, ®s, regbuf); | |
192 | ||
193 | ret = -EFAULT; | |
194 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
195 | goto out; | |
196 | useraddr += offsetof(struct ethtool_regs, data); | |
197 | if (copy_to_user(useraddr, regbuf, regs.len)) | |
198 | goto out; | |
199 | ret = 0; | |
200 | ||
201 | out: | |
202 | kfree(regbuf); | |
203 | return ret; | |
204 | } | |
205 | ||
206 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) | |
207 | { | |
208 | struct ethtool_wolinfo wol = { ETHTOOL_GWOL }; | |
209 | ||
210 | if (!dev->ethtool_ops->get_wol) | |
211 | return -EOPNOTSUPP; | |
212 | ||
213 | dev->ethtool_ops->get_wol(dev, &wol); | |
214 | ||
215 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
216 | return -EFAULT; | |
217 | return 0; | |
218 | } | |
219 | ||
220 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
221 | { | |
222 | struct ethtool_wolinfo wol; | |
223 | ||
224 | if (!dev->ethtool_ops->set_wol) | |
225 | return -EOPNOTSUPP; | |
226 | ||
227 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
228 | return -EFAULT; | |
229 | ||
230 | return dev->ethtool_ops->set_wol(dev, &wol); | |
231 | } | |
232 | ||
233 | static int ethtool_get_msglevel(struct net_device *dev, char __user *useraddr) | |
234 | { | |
235 | struct ethtool_value edata = { ETHTOOL_GMSGLVL }; | |
236 | ||
237 | if (!dev->ethtool_ops->get_msglevel) | |
238 | return -EOPNOTSUPP; | |
239 | ||
240 | edata.data = dev->ethtool_ops->get_msglevel(dev); | |
241 | ||
242 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
243 | return -EFAULT; | |
244 | return 0; | |
245 | } | |
246 | ||
247 | static int ethtool_set_msglevel(struct net_device *dev, char __user *useraddr) | |
248 | { | |
249 | struct ethtool_value edata; | |
250 | ||
251 | if (!dev->ethtool_ops->set_msglevel) | |
252 | return -EOPNOTSUPP; | |
253 | ||
254 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
255 | return -EFAULT; | |
256 | ||
257 | dev->ethtool_ops->set_msglevel(dev, edata.data); | |
258 | return 0; | |
259 | } | |
260 | ||
261 | static int ethtool_nway_reset(struct net_device *dev) | |
262 | { | |
263 | if (!dev->ethtool_ops->nway_reset) | |
264 | return -EOPNOTSUPP; | |
265 | ||
266 | return dev->ethtool_ops->nway_reset(dev); | |
267 | } | |
268 | ||
269 | static int ethtool_get_link(struct net_device *dev, void __user *useraddr) | |
270 | { | |
271 | struct ethtool_value edata = { ETHTOOL_GLINK }; | |
272 | ||
273 | if (!dev->ethtool_ops->get_link) | |
274 | return -EOPNOTSUPP; | |
275 | ||
276 | edata.data = dev->ethtool_ops->get_link(dev); | |
277 | ||
278 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
279 | return -EFAULT; | |
280 | return 0; | |
281 | } | |
282 | ||
283 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) | |
284 | { | |
285 | struct ethtool_eeprom eeprom; | |
76fd8593 | 286 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
287 | u8 *data; |
288 | int ret; | |
289 | ||
290 | if (!ops->get_eeprom || !ops->get_eeprom_len) | |
291 | return -EOPNOTSUPP; | |
292 | ||
293 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
294 | return -EFAULT; | |
295 | ||
296 | /* Check for wrap and zero */ | |
297 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
298 | return -EINVAL; | |
299 | ||
300 | /* Check for exceeding total eeprom len */ | |
301 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
302 | return -EINVAL; | |
303 | ||
304 | data = kmalloc(eeprom.len, GFP_USER); | |
305 | if (!data) | |
306 | return -ENOMEM; | |
307 | ||
308 | ret = -EFAULT; | |
309 | if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len)) | |
310 | goto out; | |
311 | ||
312 | ret = ops->get_eeprom(dev, &eeprom, data); | |
313 | if (ret) | |
314 | goto out; | |
315 | ||
316 | ret = -EFAULT; | |
317 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
318 | goto out; | |
319 | if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len)) | |
320 | goto out; | |
321 | ret = 0; | |
322 | ||
323 | out: | |
324 | kfree(data); | |
325 | return ret; | |
326 | } | |
327 | ||
328 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) | |
329 | { | |
330 | struct ethtool_eeprom eeprom; | |
76fd8593 | 331 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
332 | u8 *data; |
333 | int ret; | |
334 | ||
335 | if (!ops->set_eeprom || !ops->get_eeprom_len) | |
336 | return -EOPNOTSUPP; | |
337 | ||
338 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
339 | return -EFAULT; | |
340 | ||
341 | /* Check for wrap and zero */ | |
342 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
343 | return -EINVAL; | |
344 | ||
345 | /* Check for exceeding total eeprom len */ | |
346 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
347 | return -EINVAL; | |
348 | ||
349 | data = kmalloc(eeprom.len, GFP_USER); | |
350 | if (!data) | |
351 | return -ENOMEM; | |
352 | ||
353 | ret = -EFAULT; | |
354 | if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len)) | |
355 | goto out; | |
356 | ||
357 | ret = ops->set_eeprom(dev, &eeprom, data); | |
358 | if (ret) | |
359 | goto out; | |
360 | ||
361 | if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len)) | |
362 | ret = -EFAULT; | |
363 | ||
364 | out: | |
365 | kfree(data); | |
366 | return ret; | |
367 | } | |
368 | ||
369 | static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr) | |
370 | { | |
371 | struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE }; | |
372 | ||
373 | if (!dev->ethtool_ops->get_coalesce) | |
374 | return -EOPNOTSUPP; | |
375 | ||
376 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
377 | ||
378 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
379 | return -EFAULT; | |
380 | return 0; | |
381 | } | |
382 | ||
383 | static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr) | |
384 | { | |
385 | struct ethtool_coalesce coalesce; | |
386 | ||
fa04ae5c | 387 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
388 | return -EOPNOTSUPP; |
389 | ||
390 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
391 | return -EFAULT; | |
392 | ||
393 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
394 | } | |
395 | ||
396 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
397 | { | |
398 | struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM }; | |
399 | ||
400 | if (!dev->ethtool_ops->get_ringparam) | |
401 | return -EOPNOTSUPP; | |
402 | ||
403 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
404 | ||
405 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
406 | return -EFAULT; | |
407 | return 0; | |
408 | } | |
409 | ||
410 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
411 | { | |
412 | struct ethtool_ringparam ringparam; | |
413 | ||
414 | if (!dev->ethtool_ops->set_ringparam) | |
415 | return -EOPNOTSUPP; | |
416 | ||
417 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
418 | return -EFAULT; | |
419 | ||
420 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
421 | } | |
422 | ||
423 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) | |
424 | { | |
425 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
426 | ||
427 | if (!dev->ethtool_ops->get_pauseparam) | |
428 | return -EOPNOTSUPP; | |
429 | ||
430 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
431 | ||
432 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
433 | return -EFAULT; | |
434 | return 0; | |
435 | } | |
436 | ||
437 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
438 | { | |
439 | struct ethtool_pauseparam pauseparam; | |
440 | ||
e1b90c41 | 441 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
442 | return -EOPNOTSUPP; |
443 | ||
444 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
445 | return -EFAULT; | |
446 | ||
447 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
448 | } | |
449 | ||
450 | static int ethtool_get_rx_csum(struct net_device *dev, char __user *useraddr) | |
451 | { | |
452 | struct ethtool_value edata = { ETHTOOL_GRXCSUM }; | |
453 | ||
454 | if (!dev->ethtool_ops->get_rx_csum) | |
455 | return -EOPNOTSUPP; | |
456 | ||
457 | edata.data = dev->ethtool_ops->get_rx_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_rx_csum(struct net_device *dev, char __user *useraddr) | |
465 | { | |
466 | struct ethtool_value edata; | |
467 | ||
468 | if (!dev->ethtool_ops->set_rx_csum) | |
469 | return -EOPNOTSUPP; | |
470 | ||
471 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
472 | return -EFAULT; | |
473 | ||
474 | dev->ethtool_ops->set_rx_csum(dev, edata.data); | |
475 | return 0; | |
476 | } | |
477 | ||
478 | static int ethtool_get_tx_csum(struct net_device *dev, char __user *useraddr) | |
479 | { | |
480 | struct ethtool_value edata = { ETHTOOL_GTXCSUM }; | |
481 | ||
482 | if (!dev->ethtool_ops->get_tx_csum) | |
483 | return -EOPNOTSUPP; | |
484 | ||
485 | edata.data = dev->ethtool_ops->get_tx_csum(dev); | |
486 | ||
487 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
488 | return -EFAULT; | |
489 | return 0; | |
490 | } | |
491 | ||
492 | static int __ethtool_set_sg(struct net_device *dev, u32 data) | |
493 | { | |
494 | int err; | |
495 | ||
496 | if (!data && dev->ethtool_ops->set_tso) { | |
497 | err = dev->ethtool_ops->set_tso(dev, 0); | |
498 | if (err) | |
499 | return err; | |
500 | } | |
501 | ||
e89e9cf5 AR |
502 | if (!data && dev->ethtool_ops->set_ufo) { |
503 | err = dev->ethtool_ops->set_ufo(dev, 0); | |
504 | if (err) | |
505 | return err; | |
506 | } | |
1da177e4 LT |
507 | return dev->ethtool_ops->set_sg(dev, data); |
508 | } | |
509 | ||
510 | static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr) | |
511 | { | |
512 | struct ethtool_value edata; | |
513 | int err; | |
514 | ||
515 | if (!dev->ethtool_ops->set_tx_csum) | |
516 | return -EOPNOTSUPP; | |
517 | ||
518 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
519 | return -EFAULT; | |
520 | ||
521 | if (!edata.data && dev->ethtool_ops->set_sg) { | |
522 | err = __ethtool_set_sg(dev, 0); | |
523 | if (err) | |
524 | return err; | |
525 | } | |
526 | ||
527 | return dev->ethtool_ops->set_tx_csum(dev, edata.data); | |
528 | } | |
529 | ||
530 | static int ethtool_get_sg(struct net_device *dev, char __user *useraddr) | |
531 | { | |
532 | struct ethtool_value edata = { ETHTOOL_GSG }; | |
533 | ||
534 | if (!dev->ethtool_ops->get_sg) | |
535 | return -EOPNOTSUPP; | |
536 | ||
537 | edata.data = dev->ethtool_ops->get_sg(dev); | |
538 | ||
539 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
540 | return -EFAULT; | |
541 | return 0; | |
542 | } | |
543 | ||
544 | static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) | |
545 | { | |
546 | struct ethtool_value edata; | |
547 | ||
548 | if (!dev->ethtool_ops->set_sg) | |
549 | return -EOPNOTSUPP; | |
550 | ||
551 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
552 | return -EFAULT; | |
553 | ||
4ec93edb | 554 | if (edata.data && |
8648b305 | 555 | !(dev->features & NETIF_F_ALL_CSUM)) |
1da177e4 LT |
556 | return -EINVAL; |
557 | ||
558 | return __ethtool_set_sg(dev, edata.data); | |
559 | } | |
560 | ||
561 | static 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 | ||
575 | static 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 | ||
e89e9cf5 AR |
591 | static int ethtool_get_ufo(struct net_device *dev, char __user *useraddr) |
592 | { | |
47552c4e | 593 | struct ethtool_value edata = { ETHTOOL_GUFO }; |
e89e9cf5 AR |
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 | } | |
47552c4e | 602 | |
e89e9cf5 AR |
603 | static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr) |
604 | { | |
605 | struct ethtool_value edata; | |
606 | ||
607 | if (!dev->ethtool_ops->set_ufo) | |
608 | return -EOPNOTSUPP; | |
609 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
610 | return -EFAULT; | |
611 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
612 | return -EINVAL; | |
613 | if (edata.data && !(dev->features & NETIF_F_HW_CSUM)) | |
614 | return -EINVAL; | |
615 | return dev->ethtool_ops->set_ufo(dev, edata.data); | |
616 | } | |
617 | ||
37c3185a HX |
618 | static int ethtool_get_gso(struct net_device *dev, char __user *useraddr) |
619 | { | |
620 | struct ethtool_value edata = { ETHTOOL_GGSO }; | |
621 | ||
622 | edata.data = dev->features & NETIF_F_GSO; | |
623 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
624 | return -EFAULT; | |
625 | return 0; | |
626 | } | |
627 | ||
628 | static int ethtool_set_gso(struct net_device *dev, char __user *useraddr) | |
629 | { | |
630 | struct ethtool_value edata; | |
631 | ||
632 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
633 | return -EFAULT; | |
634 | if (edata.data) | |
635 | dev->features |= NETIF_F_GSO; | |
636 | else | |
637 | dev->features &= ~NETIF_F_GSO; | |
638 | return 0; | |
639 | } | |
640 | ||
1da177e4 LT |
641 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
642 | { | |
643 | struct ethtool_test test; | |
76fd8593 | 644 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
645 | u64 *data; |
646 | int ret; | |
647 | ||
648 | if (!ops->self_test || !ops->self_test_count) | |
649 | return -EOPNOTSUPP; | |
650 | ||
651 | if (copy_from_user(&test, useraddr, sizeof(test))) | |
652 | return -EFAULT; | |
653 | ||
654 | test.len = ops->self_test_count(dev); | |
655 | data = kmalloc(test.len * sizeof(u64), GFP_USER); | |
656 | if (!data) | |
657 | return -ENOMEM; | |
658 | ||
659 | ops->self_test(dev, &test, data); | |
660 | ||
661 | ret = -EFAULT; | |
662 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
663 | goto out; | |
664 | useraddr += sizeof(test); | |
665 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
666 | goto out; | |
667 | ret = 0; | |
668 | ||
669 | out: | |
670 | kfree(data); | |
671 | return ret; | |
672 | } | |
673 | ||
674 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
675 | { | |
676 | struct ethtool_gstrings gstrings; | |
76fd8593 | 677 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
678 | u8 *data; |
679 | int ret; | |
680 | ||
681 | if (!ops->get_strings) | |
682 | return -EOPNOTSUPP; | |
683 | ||
684 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) | |
685 | return -EFAULT; | |
686 | ||
687 | switch (gstrings.string_set) { | |
688 | case ETH_SS_TEST: | |
689 | if (!ops->self_test_count) | |
690 | return -EOPNOTSUPP; | |
691 | gstrings.len = ops->self_test_count(dev); | |
692 | break; | |
693 | case ETH_SS_STATS: | |
694 | if (!ops->get_stats_count) | |
695 | return -EOPNOTSUPP; | |
696 | gstrings.len = ops->get_stats_count(dev); | |
697 | break; | |
698 | default: | |
699 | return -EINVAL; | |
700 | } | |
701 | ||
702 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
703 | if (!data) | |
704 | return -ENOMEM; | |
705 | ||
706 | ops->get_strings(dev, gstrings.string_set, data); | |
707 | ||
708 | ret = -EFAULT; | |
709 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
710 | goto out; | |
711 | useraddr += sizeof(gstrings); | |
712 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
713 | goto out; | |
714 | ret = 0; | |
715 | ||
716 | out: | |
717 | kfree(data); | |
718 | return ret; | |
719 | } | |
720 | ||
721 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
722 | { | |
723 | struct ethtool_value id; | |
724 | ||
725 | if (!dev->ethtool_ops->phys_id) | |
726 | return -EOPNOTSUPP; | |
727 | ||
728 | if (copy_from_user(&id, useraddr, sizeof(id))) | |
729 | return -EFAULT; | |
730 | ||
731 | return dev->ethtool_ops->phys_id(dev, id.data); | |
732 | } | |
733 | ||
734 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
735 | { | |
736 | struct ethtool_stats stats; | |
76fd8593 | 737 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
738 | u64 *data; |
739 | int ret; | |
740 | ||
741 | if (!ops->get_ethtool_stats || !ops->get_stats_count) | |
742 | return -EOPNOTSUPP; | |
743 | ||
744 | if (copy_from_user(&stats, useraddr, sizeof(stats))) | |
745 | return -EFAULT; | |
746 | ||
747 | stats.n_stats = ops->get_stats_count(dev); | |
748 | data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER); | |
749 | if (!data) | |
750 | return -ENOMEM; | |
751 | ||
752 | ops->get_ethtool_stats(dev, &stats, data); | |
753 | ||
754 | ret = -EFAULT; | |
755 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
756 | goto out; | |
757 | useraddr += sizeof(stats); | |
758 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
759 | goto out; | |
760 | ret = 0; | |
761 | ||
762 | out: | |
763 | kfree(data); | |
764 | return ret; | |
765 | } | |
766 | ||
0bf0519d | 767 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
768 | { |
769 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 770 | |
313674af | 771 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
772 | return -EFAULT; |
773 | ||
313674af MW |
774 | if (epaddr.size < dev->addr_len) |
775 | return -ETOOSMALL; | |
776 | epaddr.size = dev->addr_len; | |
a6f9a705 | 777 | |
a6f9a705 | 778 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 779 | return -EFAULT; |
a6f9a705 | 780 | useraddr += sizeof(epaddr); |
313674af MW |
781 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
782 | return -EFAULT; | |
783 | return 0; | |
a6f9a705 JW |
784 | } |
785 | ||
1da177e4 LT |
786 | /* The main entry point in this file. Called from net/core/dev.c */ |
787 | ||
788 | int dev_ethtool(struct ifreq *ifr) | |
789 | { | |
790 | struct net_device *dev = __dev_get_by_name(ifr->ifr_name); | |
791 | void __user *useraddr = ifr->ifr_data; | |
792 | u32 ethcmd; | |
793 | int rc; | |
81e81575 | 794 | unsigned long old_features; |
1da177e4 | 795 | |
1da177e4 LT |
796 | if (!dev || !netif_device_present(dev)) |
797 | return -ENODEV; | |
798 | ||
799 | if (!dev->ethtool_ops) | |
61a44b9c | 800 | return -EOPNOTSUPP; |
1da177e4 LT |
801 | |
802 | if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) | |
803 | return -EFAULT; | |
804 | ||
75f3123c SH |
805 | /* Allow some commands to be done by anyone */ |
806 | switch(ethcmd) { | |
75f3123c | 807 | case ETHTOOL_GDRVINFO: |
75f3123c | 808 | case ETHTOOL_GMSGLVL: |
75f3123c SH |
809 | case ETHTOOL_GCOALESCE: |
810 | case ETHTOOL_GRINGPARAM: | |
811 | case ETHTOOL_GPAUSEPARAM: | |
812 | case ETHTOOL_GRXCSUM: | |
813 | case ETHTOOL_GTXCSUM: | |
814 | case ETHTOOL_GSG: | |
815 | case ETHTOOL_GSTRINGS: | |
75f3123c SH |
816 | case ETHTOOL_GTSO: |
817 | case ETHTOOL_GPERMADDR: | |
818 | case ETHTOOL_GUFO: | |
819 | case ETHTOOL_GGSO: | |
820 | break; | |
821 | default: | |
822 | if (!capable(CAP_NET_ADMIN)) | |
823 | return -EPERM; | |
824 | } | |
825 | ||
e71a4783 | 826 | if (dev->ethtool_ops->begin) |
1da177e4 LT |
827 | if ((rc = dev->ethtool_ops->begin(dev)) < 0) |
828 | return rc; | |
829 | ||
d8a33ac4 SH |
830 | old_features = dev->features; |
831 | ||
1da177e4 LT |
832 | switch (ethcmd) { |
833 | case ETHTOOL_GSET: | |
834 | rc = ethtool_get_settings(dev, useraddr); | |
835 | break; | |
836 | case ETHTOOL_SSET: | |
837 | rc = ethtool_set_settings(dev, useraddr); | |
838 | break; | |
839 | case ETHTOOL_GDRVINFO: | |
840 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
841 | break; |
842 | case ETHTOOL_GREGS: | |
843 | rc = ethtool_get_regs(dev, useraddr); | |
844 | break; | |
845 | case ETHTOOL_GWOL: | |
846 | rc = ethtool_get_wol(dev, useraddr); | |
847 | break; | |
848 | case ETHTOOL_SWOL: | |
849 | rc = ethtool_set_wol(dev, useraddr); | |
850 | break; | |
851 | case ETHTOOL_GMSGLVL: | |
852 | rc = ethtool_get_msglevel(dev, useraddr); | |
853 | break; | |
854 | case ETHTOOL_SMSGLVL: | |
855 | rc = ethtool_set_msglevel(dev, useraddr); | |
856 | break; | |
857 | case ETHTOOL_NWAY_RST: | |
858 | rc = ethtool_nway_reset(dev); | |
859 | break; | |
860 | case ETHTOOL_GLINK: | |
861 | rc = ethtool_get_link(dev, useraddr); | |
862 | break; | |
863 | case ETHTOOL_GEEPROM: | |
864 | rc = ethtool_get_eeprom(dev, useraddr); | |
865 | break; | |
866 | case ETHTOOL_SEEPROM: | |
867 | rc = ethtool_set_eeprom(dev, useraddr); | |
868 | break; | |
869 | case ETHTOOL_GCOALESCE: | |
870 | rc = ethtool_get_coalesce(dev, useraddr); | |
871 | break; | |
872 | case ETHTOOL_SCOALESCE: | |
873 | rc = ethtool_set_coalesce(dev, useraddr); | |
874 | break; | |
875 | case ETHTOOL_GRINGPARAM: | |
876 | rc = ethtool_get_ringparam(dev, useraddr); | |
877 | break; | |
878 | case ETHTOOL_SRINGPARAM: | |
879 | rc = ethtool_set_ringparam(dev, useraddr); | |
880 | break; | |
881 | case ETHTOOL_GPAUSEPARAM: | |
882 | rc = ethtool_get_pauseparam(dev, useraddr); | |
883 | break; | |
884 | case ETHTOOL_SPAUSEPARAM: | |
885 | rc = ethtool_set_pauseparam(dev, useraddr); | |
886 | break; | |
887 | case ETHTOOL_GRXCSUM: | |
888 | rc = ethtool_get_rx_csum(dev, useraddr); | |
889 | break; | |
890 | case ETHTOOL_SRXCSUM: | |
891 | rc = ethtool_set_rx_csum(dev, useraddr); | |
892 | break; | |
893 | case ETHTOOL_GTXCSUM: | |
894 | rc = ethtool_get_tx_csum(dev, useraddr); | |
895 | break; | |
896 | case ETHTOOL_STXCSUM: | |
897 | rc = ethtool_set_tx_csum(dev, useraddr); | |
898 | break; | |
899 | case ETHTOOL_GSG: | |
900 | rc = ethtool_get_sg(dev, useraddr); | |
901 | break; | |
902 | case ETHTOOL_SSG: | |
903 | rc = ethtool_set_sg(dev, useraddr); | |
904 | break; | |
905 | case ETHTOOL_GTSO: | |
906 | rc = ethtool_get_tso(dev, useraddr); | |
907 | break; | |
908 | case ETHTOOL_STSO: | |
909 | rc = ethtool_set_tso(dev, useraddr); | |
910 | break; | |
911 | case ETHTOOL_TEST: | |
912 | rc = ethtool_self_test(dev, useraddr); | |
913 | break; | |
914 | case ETHTOOL_GSTRINGS: | |
915 | rc = ethtool_get_strings(dev, useraddr); | |
916 | break; | |
917 | case ETHTOOL_PHYS_ID: | |
918 | rc = ethtool_phys_id(dev, useraddr); | |
919 | break; | |
920 | case ETHTOOL_GSTATS: | |
921 | rc = ethtool_get_stats(dev, useraddr); | |
922 | break; | |
a6f9a705 JW |
923 | case ETHTOOL_GPERMADDR: |
924 | rc = ethtool_get_perm_addr(dev, useraddr); | |
925 | break; | |
e89e9cf5 AR |
926 | case ETHTOOL_GUFO: |
927 | rc = ethtool_get_ufo(dev, useraddr); | |
928 | break; | |
929 | case ETHTOOL_SUFO: | |
930 | rc = ethtool_set_ufo(dev, useraddr); | |
931 | break; | |
37c3185a HX |
932 | case ETHTOOL_GGSO: |
933 | rc = ethtool_get_gso(dev, useraddr); | |
934 | break; | |
935 | case ETHTOOL_SGSO: | |
936 | rc = ethtool_set_gso(dev, useraddr); | |
937 | break; | |
1da177e4 | 938 | default: |
61a44b9c | 939 | rc = -EOPNOTSUPP; |
1da177e4 | 940 | } |
4ec93edb | 941 | |
e71a4783 | 942 | if (dev->ethtool_ops->complete) |
1da177e4 | 943 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
944 | |
945 | if (old_features != dev->features) | |
946 | netdev_features_change(dev); | |
947 | ||
1da177e4 | 948 | return rc; |
1da177e4 LT |
949 | } |
950 | ||
1da177e4 LT |
951 | EXPORT_SYMBOL(ethtool_op_get_link); |
952 | EXPORT_SYMBOL(ethtool_op_get_sg); | |
953 | EXPORT_SYMBOL(ethtool_op_get_tso); | |
954 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); | |
955 | EXPORT_SYMBOL(ethtool_op_set_sg); | |
956 | EXPORT_SYMBOL(ethtool_op_set_tso); | |
957 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); | |
69f6a0fa | 958 | EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |
6460d948 | 959 | EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum); |
e89e9cf5 AR |
960 | EXPORT_SYMBOL(ethtool_op_set_ufo); |
961 | EXPORT_SYMBOL(ethtool_op_get_ufo); |