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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 | |
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 | ||
3ae7c0b2 JG |
112 | /* the following list of flags are the same as their associated |
113 | * NETIF_F_xxx values in include/linux/netdevice.h | |
114 | */ | |
115 | static const u32 flags_dup_features = | |
116 | ETH_FLAG_LRO; | |
117 | ||
118 | u32 ethtool_op_get_flags(struct net_device *dev) | |
119 | { | |
120 | /* in the future, this function will probably contain additional | |
121 | * handling for flags which are not so easily handled | |
122 | * by a simple masking operation | |
123 | */ | |
124 | ||
125 | return dev->features & flags_dup_features; | |
126 | } | |
127 | ||
128 | int ethtool_op_set_flags(struct net_device *dev, u32 data) | |
129 | { | |
130 | if (data & ETH_FLAG_LRO) | |
131 | dev->features |= NETIF_F_LRO; | |
132 | else | |
133 | dev->features &= ~NETIF_F_LRO; | |
134 | ||
135 | return 0; | |
136 | } | |
137 | ||
1da177e4 LT |
138 | /* Handlers for each ethtool command */ |
139 | ||
140 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) | |
141 | { | |
142 | struct ethtool_cmd cmd = { ETHTOOL_GSET }; | |
143 | int err; | |
144 | ||
145 | if (!dev->ethtool_ops->get_settings) | |
146 | return -EOPNOTSUPP; | |
147 | ||
148 | err = dev->ethtool_ops->get_settings(dev, &cmd); | |
149 | if (err < 0) | |
150 | return err; | |
151 | ||
152 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
153 | return -EFAULT; | |
154 | return 0; | |
155 | } | |
156 | ||
157 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) | |
158 | { | |
159 | struct ethtool_cmd cmd; | |
160 | ||
161 | if (!dev->ethtool_ops->set_settings) | |
162 | return -EOPNOTSUPP; | |
163 | ||
164 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
165 | return -EFAULT; | |
166 | ||
167 | return dev->ethtool_ops->set_settings(dev, &cmd); | |
168 | } | |
169 | ||
170 | static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr) | |
171 | { | |
172 | struct ethtool_drvinfo info; | |
76fd8593 | 173 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
174 | |
175 | if (!ops->get_drvinfo) | |
176 | return -EOPNOTSUPP; | |
177 | ||
178 | memset(&info, 0, sizeof(info)); | |
179 | info.cmd = ETHTOOL_GDRVINFO; | |
180 | ops->get_drvinfo(dev, &info); | |
181 | ||
ff03d49f JG |
182 | if (ops->get_sset_count) { |
183 | int rc; | |
184 | ||
185 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
186 | if (rc >= 0) | |
187 | info.testinfo_len = rc; | |
188 | rc = ops->get_sset_count(dev, ETH_SS_STATS); | |
189 | if (rc >= 0) | |
190 | info.n_stats = rc; | |
339bf024 JG |
191 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
192 | if (rc >= 0) | |
193 | info.n_priv_flags = rc; | |
ff03d49f JG |
194 | } else { |
195 | /* code path for obsolete hooks */ | |
196 | ||
197 | if (ops->self_test_count) | |
198 | info.testinfo_len = ops->self_test_count(dev); | |
199 | if (ops->get_stats_count) | |
200 | info.n_stats = ops->get_stats_count(dev); | |
201 | } | |
1da177e4 LT |
202 | if (ops->get_regs_len) |
203 | info.regdump_len = ops->get_regs_len(dev); | |
204 | if (ops->get_eeprom_len) | |
205 | info.eedump_len = ops->get_eeprom_len(dev); | |
206 | ||
207 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
208 | return -EFAULT; | |
209 | return 0; | |
210 | } | |
211 | ||
212 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) | |
213 | { | |
214 | struct ethtool_regs regs; | |
76fd8593 | 215 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
216 | void *regbuf; |
217 | int reglen, ret; | |
218 | ||
219 | if (!ops->get_regs || !ops->get_regs_len) | |
220 | return -EOPNOTSUPP; | |
221 | ||
222 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
223 | return -EFAULT; | |
224 | ||
225 | reglen = ops->get_regs_len(dev); | |
226 | if (regs.len > reglen) | |
227 | regs.len = reglen; | |
228 | ||
229 | regbuf = kmalloc(reglen, GFP_USER); | |
230 | if (!regbuf) | |
231 | return -ENOMEM; | |
232 | ||
233 | ops->get_regs(dev, ®s, regbuf); | |
234 | ||
235 | ret = -EFAULT; | |
236 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
237 | goto out; | |
238 | useraddr += offsetof(struct ethtool_regs, data); | |
239 | if (copy_to_user(useraddr, regbuf, regs.len)) | |
240 | goto out; | |
241 | ret = 0; | |
242 | ||
243 | out: | |
244 | kfree(regbuf); | |
245 | return ret; | |
246 | } | |
247 | ||
248 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) | |
249 | { | |
250 | struct ethtool_wolinfo wol = { ETHTOOL_GWOL }; | |
251 | ||
252 | if (!dev->ethtool_ops->get_wol) | |
253 | return -EOPNOTSUPP; | |
254 | ||
255 | dev->ethtool_ops->get_wol(dev, &wol); | |
256 | ||
257 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
258 | return -EFAULT; | |
259 | return 0; | |
260 | } | |
261 | ||
262 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
263 | { | |
264 | struct ethtool_wolinfo wol; | |
265 | ||
266 | if (!dev->ethtool_ops->set_wol) | |
267 | return -EOPNOTSUPP; | |
268 | ||
269 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
270 | return -EFAULT; | |
271 | ||
272 | return dev->ethtool_ops->set_wol(dev, &wol); | |
273 | } | |
274 | ||
1da177e4 LT |
275 | static int ethtool_nway_reset(struct net_device *dev) |
276 | { | |
277 | if (!dev->ethtool_ops->nway_reset) | |
278 | return -EOPNOTSUPP; | |
279 | ||
280 | return dev->ethtool_ops->nway_reset(dev); | |
281 | } | |
282 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
450 | static int __ethtool_set_sg(struct net_device *dev, u32 data) |
451 | { | |
452 | int err; | |
453 | ||
454 | if (!data && dev->ethtool_ops->set_tso) { | |
455 | err = dev->ethtool_ops->set_tso(dev, 0); | |
456 | if (err) | |
457 | return err; | |
458 | } | |
459 | ||
e89e9cf5 AR |
460 | if (!data && dev->ethtool_ops->set_ufo) { |
461 | err = dev->ethtool_ops->set_ufo(dev, 0); | |
462 | if (err) | |
463 | return err; | |
464 | } | |
1da177e4 LT |
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 | ||
1da177e4 LT |
488 | static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) |
489 | { | |
490 | struct ethtool_value edata; | |
491 | ||
492 | if (!dev->ethtool_ops->set_sg) | |
493 | return -EOPNOTSUPP; | |
494 | ||
495 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
496 | return -EFAULT; | |
497 | ||
4ec93edb | 498 | if (edata.data && |
8648b305 | 499 | !(dev->features & NETIF_F_ALL_CSUM)) |
1da177e4 LT |
500 | return -EINVAL; |
501 | ||
502 | return __ethtool_set_sg(dev, edata.data); | |
503 | } | |
504 | ||
1da177e4 LT |
505 | static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) |
506 | { | |
507 | struct ethtool_value edata; | |
508 | ||
509 | if (!dev->ethtool_ops->set_tso) | |
510 | return -EOPNOTSUPP; | |
511 | ||
512 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
513 | return -EFAULT; | |
514 | ||
515 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
516 | return -EINVAL; | |
517 | ||
518 | return dev->ethtool_ops->set_tso(dev, edata.data); | |
519 | } | |
520 | ||
e89e9cf5 AR |
521 | static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr) |
522 | { | |
523 | struct ethtool_value edata; | |
524 | ||
525 | if (!dev->ethtool_ops->set_ufo) | |
526 | return -EOPNOTSUPP; | |
527 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
528 | return -EFAULT; | |
529 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
530 | return -EINVAL; | |
531 | if (edata.data && !(dev->features & NETIF_F_HW_CSUM)) | |
532 | return -EINVAL; | |
533 | return dev->ethtool_ops->set_ufo(dev, edata.data); | |
534 | } | |
535 | ||
37c3185a HX |
536 | static int ethtool_get_gso(struct net_device *dev, char __user *useraddr) |
537 | { | |
538 | struct ethtool_value edata = { ETHTOOL_GGSO }; | |
539 | ||
540 | edata.data = dev->features & NETIF_F_GSO; | |
541 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
542 | return -EFAULT; | |
543 | return 0; | |
544 | } | |
545 | ||
546 | static int ethtool_set_gso(struct net_device *dev, char __user *useraddr) | |
547 | { | |
548 | struct ethtool_value edata; | |
549 | ||
550 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
551 | return -EFAULT; | |
552 | if (edata.data) | |
553 | dev->features |= NETIF_F_GSO; | |
554 | else | |
555 | dev->features &= ~NETIF_F_GSO; | |
556 | return 0; | |
557 | } | |
558 | ||
1da177e4 LT |
559 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
560 | { | |
561 | struct ethtool_test test; | |
76fd8593 | 562 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 563 | u64 *data; |
ff03d49f | 564 | int ret, test_len; |
1da177e4 | 565 | |
ff03d49f JG |
566 | if (!ops->self_test) |
567 | return -EOPNOTSUPP; | |
568 | if (!ops->get_sset_count && !ops->self_test_count) | |
1da177e4 LT |
569 | return -EOPNOTSUPP; |
570 | ||
ff03d49f JG |
571 | if (ops->get_sset_count) |
572 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); | |
573 | else | |
574 | /* code path for obsolete hook */ | |
575 | test_len = ops->self_test_count(dev); | |
576 | if (test_len < 0) | |
577 | return test_len; | |
578 | WARN_ON(test_len == 0); | |
579 | ||
1da177e4 LT |
580 | if (copy_from_user(&test, useraddr, sizeof(test))) |
581 | return -EFAULT; | |
582 | ||
ff03d49f JG |
583 | test.len = test_len; |
584 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
585 | if (!data) |
586 | return -ENOMEM; | |
587 | ||
588 | ops->self_test(dev, &test, data); | |
589 | ||
590 | ret = -EFAULT; | |
591 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
592 | goto out; | |
593 | useraddr += sizeof(test); | |
594 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
595 | goto out; | |
596 | ret = 0; | |
597 | ||
598 | out: | |
599 | kfree(data); | |
600 | return ret; | |
601 | } | |
602 | ||
603 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
604 | { | |
605 | struct ethtool_gstrings gstrings; | |
76fd8593 | 606 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
607 | u8 *data; |
608 | int ret; | |
609 | ||
610 | if (!ops->get_strings) | |
611 | return -EOPNOTSUPP; | |
612 | ||
613 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) | |
614 | return -EFAULT; | |
615 | ||
ff03d49f JG |
616 | if (ops->get_sset_count) { |
617 | ret = ops->get_sset_count(dev, gstrings.string_set); | |
618 | if (ret < 0) | |
619 | return ret; | |
620 | ||
621 | gstrings.len = ret; | |
622 | } else { | |
623 | /* code path for obsolete hooks */ | |
624 | ||
625 | switch (gstrings.string_set) { | |
626 | case ETH_SS_TEST: | |
627 | if (!ops->self_test_count) | |
628 | return -EOPNOTSUPP; | |
629 | gstrings.len = ops->self_test_count(dev); | |
630 | break; | |
631 | case ETH_SS_STATS: | |
632 | if (!ops->get_stats_count) | |
633 | return -EOPNOTSUPP; | |
634 | gstrings.len = ops->get_stats_count(dev); | |
635 | break; | |
636 | default: | |
637 | return -EINVAL; | |
638 | } | |
1da177e4 LT |
639 | } |
640 | ||
641 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
642 | if (!data) | |
643 | return -ENOMEM; | |
644 | ||
645 | ops->get_strings(dev, gstrings.string_set, data); | |
646 | ||
647 | ret = -EFAULT; | |
648 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
649 | goto out; | |
650 | useraddr += sizeof(gstrings); | |
651 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
652 | goto out; | |
653 | ret = 0; | |
654 | ||
655 | out: | |
656 | kfree(data); | |
657 | return ret; | |
658 | } | |
659 | ||
660 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
661 | { | |
662 | struct ethtool_value id; | |
663 | ||
664 | if (!dev->ethtool_ops->phys_id) | |
665 | return -EOPNOTSUPP; | |
666 | ||
667 | if (copy_from_user(&id, useraddr, sizeof(id))) | |
668 | return -EFAULT; | |
669 | ||
670 | return dev->ethtool_ops->phys_id(dev, id.data); | |
671 | } | |
672 | ||
673 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
674 | { | |
675 | struct ethtool_stats stats; | |
76fd8593 | 676 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 677 | u64 *data; |
ff03d49f | 678 | int ret, n_stats; |
1da177e4 | 679 | |
ff03d49f JG |
680 | if (!ops->get_ethtool_stats) |
681 | return -EOPNOTSUPP; | |
682 | if (!ops->get_sset_count && !ops->get_stats_count) | |
1da177e4 LT |
683 | return -EOPNOTSUPP; |
684 | ||
ff03d49f JG |
685 | if (ops->get_sset_count) |
686 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); | |
687 | else | |
688 | /* code path for obsolete hook */ | |
689 | n_stats = ops->get_stats_count(dev); | |
690 | if (n_stats < 0) | |
691 | return n_stats; | |
692 | WARN_ON(n_stats == 0); | |
693 | ||
1da177e4 LT |
694 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
695 | return -EFAULT; | |
696 | ||
ff03d49f JG |
697 | stats.n_stats = n_stats; |
698 | data = kmalloc(n_stats * sizeof(u64), GFP_USER); | |
1da177e4 LT |
699 | if (!data) |
700 | return -ENOMEM; | |
701 | ||
702 | ops->get_ethtool_stats(dev, &stats, data); | |
703 | ||
704 | ret = -EFAULT; | |
705 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
706 | goto out; | |
707 | useraddr += sizeof(stats); | |
708 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
709 | goto out; | |
710 | ret = 0; | |
711 | ||
712 | out: | |
713 | kfree(data); | |
714 | return ret; | |
715 | } | |
716 | ||
0bf0519d | 717 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
718 | { |
719 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 720 | |
313674af | 721 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
722 | return -EFAULT; |
723 | ||
313674af MW |
724 | if (epaddr.size < dev->addr_len) |
725 | return -ETOOSMALL; | |
726 | epaddr.size = dev->addr_len; | |
a6f9a705 | 727 | |
a6f9a705 | 728 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 729 | return -EFAULT; |
a6f9a705 | 730 | useraddr += sizeof(epaddr); |
313674af MW |
731 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
732 | return -EFAULT; | |
733 | return 0; | |
a6f9a705 JW |
734 | } |
735 | ||
13c99b24 JG |
736 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
737 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 738 | { |
13c99b24 | 739 | struct ethtool_value edata = { cmd }; |
3ae7c0b2 | 740 | |
13c99b24 | 741 | if (!actor) |
3ae7c0b2 JG |
742 | return -EOPNOTSUPP; |
743 | ||
13c99b24 | 744 | edata.data = actor(dev); |
3ae7c0b2 JG |
745 | |
746 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
747 | return -EFAULT; | |
748 | return 0; | |
749 | } | |
750 | ||
13c99b24 JG |
751 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
752 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
753 | { |
754 | struct ethtool_value edata; | |
755 | ||
13c99b24 | 756 | if (!actor) |
3ae7c0b2 JG |
757 | return -EOPNOTSUPP; |
758 | ||
759 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
760 | return -EFAULT; | |
761 | ||
13c99b24 | 762 | actor(dev, edata.data); |
339bf024 JG |
763 | return 0; |
764 | } | |
765 | ||
13c99b24 JG |
766 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
767 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
768 | { |
769 | struct ethtool_value edata; | |
770 | ||
13c99b24 | 771 | if (!actor) |
339bf024 JG |
772 | return -EOPNOTSUPP; |
773 | ||
774 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
775 | return -EFAULT; | |
776 | ||
13c99b24 | 777 | return actor(dev, edata.data); |
339bf024 JG |
778 | } |
779 | ||
1da177e4 LT |
780 | /* The main entry point in this file. Called from net/core/dev.c */ |
781 | ||
782 | int dev_ethtool(struct ifreq *ifr) | |
783 | { | |
784 | struct net_device *dev = __dev_get_by_name(ifr->ifr_name); | |
785 | void __user *useraddr = ifr->ifr_data; | |
786 | u32 ethcmd; | |
787 | int rc; | |
81e81575 | 788 | unsigned long old_features; |
1da177e4 | 789 | |
1da177e4 LT |
790 | if (!dev || !netif_device_present(dev)) |
791 | return -ENODEV; | |
792 | ||
793 | if (!dev->ethtool_ops) | |
61a44b9c | 794 | return -EOPNOTSUPP; |
1da177e4 LT |
795 | |
796 | if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) | |
797 | return -EFAULT; | |
798 | ||
75f3123c SH |
799 | /* Allow some commands to be done by anyone */ |
800 | switch(ethcmd) { | |
75f3123c | 801 | case ETHTOOL_GDRVINFO: |
75f3123c | 802 | case ETHTOOL_GMSGLVL: |
75f3123c SH |
803 | case ETHTOOL_GCOALESCE: |
804 | case ETHTOOL_GRINGPARAM: | |
805 | case ETHTOOL_GPAUSEPARAM: | |
806 | case ETHTOOL_GRXCSUM: | |
807 | case ETHTOOL_GTXCSUM: | |
808 | case ETHTOOL_GSG: | |
809 | case ETHTOOL_GSTRINGS: | |
75f3123c SH |
810 | case ETHTOOL_GTSO: |
811 | case ETHTOOL_GPERMADDR: | |
812 | case ETHTOOL_GUFO: | |
813 | case ETHTOOL_GGSO: | |
339bf024 JG |
814 | case ETHTOOL_GFLAGS: |
815 | case ETHTOOL_GPFLAGS: | |
75f3123c SH |
816 | break; |
817 | default: | |
818 | if (!capable(CAP_NET_ADMIN)) | |
819 | return -EPERM; | |
820 | } | |
821 | ||
e71a4783 | 822 | if (dev->ethtool_ops->begin) |
1da177e4 LT |
823 | if ((rc = dev->ethtool_ops->begin(dev)) < 0) |
824 | return rc; | |
825 | ||
d8a33ac4 SH |
826 | old_features = dev->features; |
827 | ||
1da177e4 LT |
828 | switch (ethcmd) { |
829 | case ETHTOOL_GSET: | |
830 | rc = ethtool_get_settings(dev, useraddr); | |
831 | break; | |
832 | case ETHTOOL_SSET: | |
833 | rc = ethtool_set_settings(dev, useraddr); | |
834 | break; | |
835 | case ETHTOOL_GDRVINFO: | |
836 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
837 | break; |
838 | case ETHTOOL_GREGS: | |
839 | rc = ethtool_get_regs(dev, useraddr); | |
840 | break; | |
841 | case ETHTOOL_GWOL: | |
842 | rc = ethtool_get_wol(dev, useraddr); | |
843 | break; | |
844 | case ETHTOOL_SWOL: | |
845 | rc = ethtool_set_wol(dev, useraddr); | |
846 | break; | |
847 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
848 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
849 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
850 | break; |
851 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
852 | rc = ethtool_set_value_void(dev, useraddr, |
853 | dev->ethtool_ops->set_msglevel); | |
1da177e4 LT |
854 | break; |
855 | case ETHTOOL_NWAY_RST: | |
856 | rc = ethtool_nway_reset(dev); | |
857 | break; | |
858 | case ETHTOOL_GLINK: | |
13c99b24 JG |
859 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
860 | dev->ethtool_ops->get_link); | |
1da177e4 LT |
861 | break; |
862 | case ETHTOOL_GEEPROM: | |
863 | rc = ethtool_get_eeprom(dev, useraddr); | |
864 | break; | |
865 | case ETHTOOL_SEEPROM: | |
866 | rc = ethtool_set_eeprom(dev, useraddr); | |
867 | break; | |
868 | case ETHTOOL_GCOALESCE: | |
869 | rc = ethtool_get_coalesce(dev, useraddr); | |
870 | break; | |
871 | case ETHTOOL_SCOALESCE: | |
872 | rc = ethtool_set_coalesce(dev, useraddr); | |
873 | break; | |
874 | case ETHTOOL_GRINGPARAM: | |
875 | rc = ethtool_get_ringparam(dev, useraddr); | |
876 | break; | |
877 | case ETHTOOL_SRINGPARAM: | |
878 | rc = ethtool_set_ringparam(dev, useraddr); | |
879 | break; | |
880 | case ETHTOOL_GPAUSEPARAM: | |
881 | rc = ethtool_get_pauseparam(dev, useraddr); | |
882 | break; | |
883 | case ETHTOOL_SPAUSEPARAM: | |
884 | rc = ethtool_set_pauseparam(dev, useraddr); | |
885 | break; | |
886 | case ETHTOOL_GRXCSUM: | |
13c99b24 JG |
887 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
888 | dev->ethtool_ops->get_rx_csum); | |
1da177e4 LT |
889 | break; |
890 | case ETHTOOL_SRXCSUM: | |
13c99b24 JG |
891 | rc = ethtool_set_value(dev, useraddr, |
892 | dev->ethtool_ops->set_rx_csum); | |
1da177e4 LT |
893 | break; |
894 | case ETHTOOL_GTXCSUM: | |
13c99b24 JG |
895 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
896 | dev->ethtool_ops->get_tx_csum); | |
1da177e4 LT |
897 | break; |
898 | case ETHTOOL_STXCSUM: | |
899 | rc = ethtool_set_tx_csum(dev, useraddr); | |
900 | break; | |
901 | case ETHTOOL_GSG: | |
13c99b24 JG |
902 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
903 | dev->ethtool_ops->get_sg); | |
1da177e4 LT |
904 | break; |
905 | case ETHTOOL_SSG: | |
906 | rc = ethtool_set_sg(dev, useraddr); | |
907 | break; | |
908 | case ETHTOOL_GTSO: | |
13c99b24 JG |
909 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
910 | dev->ethtool_ops->get_tso); | |
1da177e4 LT |
911 | break; |
912 | case ETHTOOL_STSO: | |
913 | rc = ethtool_set_tso(dev, useraddr); | |
914 | break; | |
915 | case ETHTOOL_TEST: | |
916 | rc = ethtool_self_test(dev, useraddr); | |
917 | break; | |
918 | case ETHTOOL_GSTRINGS: | |
919 | rc = ethtool_get_strings(dev, useraddr); | |
920 | break; | |
921 | case ETHTOOL_PHYS_ID: | |
922 | rc = ethtool_phys_id(dev, useraddr); | |
923 | break; | |
924 | case ETHTOOL_GSTATS: | |
925 | rc = ethtool_get_stats(dev, useraddr); | |
926 | break; | |
a6f9a705 JW |
927 | case ETHTOOL_GPERMADDR: |
928 | rc = ethtool_get_perm_addr(dev, useraddr); | |
929 | break; | |
e89e9cf5 | 930 | case ETHTOOL_GUFO: |
13c99b24 JG |
931 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
932 | dev->ethtool_ops->get_ufo); | |
e89e9cf5 AR |
933 | break; |
934 | case ETHTOOL_SUFO: | |
935 | rc = ethtool_set_ufo(dev, useraddr); | |
936 | break; | |
37c3185a HX |
937 | case ETHTOOL_GGSO: |
938 | rc = ethtool_get_gso(dev, useraddr); | |
939 | break; | |
940 | case ETHTOOL_SGSO: | |
941 | rc = ethtool_set_gso(dev, useraddr); | |
942 | break; | |
3ae7c0b2 | 943 | case ETHTOOL_GFLAGS: |
13c99b24 JG |
944 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
945 | dev->ethtool_ops->get_flags); | |
3ae7c0b2 JG |
946 | break; |
947 | case ETHTOOL_SFLAGS: | |
13c99b24 JG |
948 | rc = ethtool_set_value(dev, useraddr, |
949 | dev->ethtool_ops->set_flags); | |
3ae7c0b2 | 950 | break; |
339bf024 | 951 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
952 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
953 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
954 | break; |
955 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
956 | rc = ethtool_set_value(dev, useraddr, |
957 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 958 | break; |
1da177e4 | 959 | default: |
61a44b9c | 960 | rc = -EOPNOTSUPP; |
1da177e4 | 961 | } |
4ec93edb | 962 | |
e71a4783 | 963 | if (dev->ethtool_ops->complete) |
1da177e4 | 964 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
965 | |
966 | if (old_features != dev->features) | |
967 | netdev_features_change(dev); | |
968 | ||
1da177e4 | 969 | return rc; |
1da177e4 LT |
970 | } |
971 | ||
1da177e4 LT |
972 | EXPORT_SYMBOL(ethtool_op_get_link); |
973 | EXPORT_SYMBOL(ethtool_op_get_sg); | |
974 | EXPORT_SYMBOL(ethtool_op_get_tso); | |
975 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); | |
976 | EXPORT_SYMBOL(ethtool_op_set_sg); | |
977 | EXPORT_SYMBOL(ethtool_op_set_tso); | |
978 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); | |
69f6a0fa | 979 | EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |
6460d948 | 980 | EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum); |
e89e9cf5 AR |
981 | EXPORT_SYMBOL(ethtool_op_set_ufo); |
982 | EXPORT_SYMBOL(ethtool_op_get_ufo); | |
3ae7c0b2 JG |
983 | EXPORT_SYMBOL(ethtool_op_set_flags); |
984 | EXPORT_SYMBOL(ethtool_op_get_flags); |