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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; |
b131dd5d MSB |
287 | void __user *userbuf = useraddr + sizeof(eeprom); |
288 | u32 bytes_remaining; | |
1da177e4 | 289 | u8 *data; |
b131dd5d | 290 | int ret = 0; |
1da177e4 LT |
291 | |
292 | if (!ops->get_eeprom || !ops->get_eeprom_len) | |
293 | return -EOPNOTSUPP; | |
294 | ||
295 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
296 | return -EFAULT; | |
297 | ||
298 | /* Check for wrap and zero */ | |
299 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
300 | return -EINVAL; | |
301 | ||
302 | /* Check for exceeding total eeprom len */ | |
303 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
304 | return -EINVAL; | |
305 | ||
b131dd5d | 306 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
307 | if (!data) |
308 | return -ENOMEM; | |
309 | ||
b131dd5d MSB |
310 | bytes_remaining = eeprom.len; |
311 | while (bytes_remaining > 0) { | |
312 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
313 | ||
314 | ret = ops->get_eeprom(dev, &eeprom, data); | |
315 | if (ret) | |
316 | break; | |
317 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
318 | ret = -EFAULT; | |
319 | break; | |
320 | } | |
321 | userbuf += eeprom.len; | |
322 | eeprom.offset += eeprom.len; | |
323 | bytes_remaining -= eeprom.len; | |
324 | } | |
1da177e4 | 325 | |
1da177e4 LT |
326 | kfree(data); |
327 | return ret; | |
328 | } | |
329 | ||
330 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) | |
331 | { | |
332 | struct ethtool_eeprom eeprom; | |
76fd8593 | 333 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
334 | void __user *userbuf = useraddr + sizeof(eeprom); |
335 | u32 bytes_remaining; | |
1da177e4 | 336 | u8 *data; |
b131dd5d | 337 | int ret = 0; |
1da177e4 LT |
338 | |
339 | if (!ops->set_eeprom || !ops->get_eeprom_len) | |
340 | return -EOPNOTSUPP; | |
341 | ||
342 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
343 | return -EFAULT; | |
344 | ||
345 | /* Check for wrap and zero */ | |
346 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
347 | return -EINVAL; | |
348 | ||
349 | /* Check for exceeding total eeprom len */ | |
350 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
351 | return -EINVAL; | |
352 | ||
b131dd5d | 353 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
354 | if (!data) |
355 | return -ENOMEM; | |
356 | ||
b131dd5d MSB |
357 | bytes_remaining = eeprom.len; |
358 | while (bytes_remaining > 0) { | |
359 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
360 | ||
361 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
362 | ret = -EFAULT; | |
363 | break; | |
364 | } | |
365 | ret = ops->set_eeprom(dev, &eeprom, data); | |
366 | if (ret) | |
367 | break; | |
368 | userbuf += eeprom.len; | |
369 | eeprom.offset += eeprom.len; | |
370 | bytes_remaining -= eeprom.len; | |
371 | } | |
1da177e4 | 372 | |
1da177e4 LT |
373 | kfree(data); |
374 | return ret; | |
375 | } | |
376 | ||
377 | static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr) | |
378 | { | |
379 | struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE }; | |
380 | ||
381 | if (!dev->ethtool_ops->get_coalesce) | |
382 | return -EOPNOTSUPP; | |
383 | ||
384 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
385 | ||
386 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
387 | return -EFAULT; | |
388 | return 0; | |
389 | } | |
390 | ||
391 | static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr) | |
392 | { | |
393 | struct ethtool_coalesce coalesce; | |
394 | ||
fa04ae5c | 395 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
396 | return -EOPNOTSUPP; |
397 | ||
398 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
399 | return -EFAULT; | |
400 | ||
401 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
402 | } | |
403 | ||
404 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
405 | { | |
406 | struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM }; | |
407 | ||
408 | if (!dev->ethtool_ops->get_ringparam) | |
409 | return -EOPNOTSUPP; | |
410 | ||
411 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
412 | ||
413 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
414 | return -EFAULT; | |
415 | return 0; | |
416 | } | |
417 | ||
418 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
419 | { | |
420 | struct ethtool_ringparam ringparam; | |
421 | ||
422 | if (!dev->ethtool_ops->set_ringparam) | |
423 | return -EOPNOTSUPP; | |
424 | ||
425 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
426 | return -EFAULT; | |
427 | ||
428 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
429 | } | |
430 | ||
431 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) | |
432 | { | |
433 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
434 | ||
435 | if (!dev->ethtool_ops->get_pauseparam) | |
436 | return -EOPNOTSUPP; | |
437 | ||
438 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
439 | ||
440 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
441 | return -EFAULT; | |
442 | return 0; | |
443 | } | |
444 | ||
445 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
446 | { | |
447 | struct ethtool_pauseparam pauseparam; | |
448 | ||
e1b90c41 | 449 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
450 | return -EOPNOTSUPP; |
451 | ||
452 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
453 | return -EFAULT; | |
454 | ||
455 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
456 | } | |
457 | ||
1da177e4 LT |
458 | static int __ethtool_set_sg(struct net_device *dev, u32 data) |
459 | { | |
460 | int err; | |
461 | ||
462 | if (!data && dev->ethtool_ops->set_tso) { | |
463 | err = dev->ethtool_ops->set_tso(dev, 0); | |
464 | if (err) | |
465 | return err; | |
466 | } | |
467 | ||
e89e9cf5 AR |
468 | if (!data && dev->ethtool_ops->set_ufo) { |
469 | err = dev->ethtool_ops->set_ufo(dev, 0); | |
470 | if (err) | |
471 | return err; | |
472 | } | |
1da177e4 LT |
473 | return dev->ethtool_ops->set_sg(dev, data); |
474 | } | |
475 | ||
476 | static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr) | |
477 | { | |
478 | struct ethtool_value edata; | |
479 | int err; | |
480 | ||
481 | if (!dev->ethtool_ops->set_tx_csum) | |
482 | return -EOPNOTSUPP; | |
483 | ||
484 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
485 | return -EFAULT; | |
486 | ||
487 | if (!edata.data && dev->ethtool_ops->set_sg) { | |
488 | err = __ethtool_set_sg(dev, 0); | |
489 | if (err) | |
490 | return err; | |
491 | } | |
492 | ||
493 | return dev->ethtool_ops->set_tx_csum(dev, edata.data); | |
494 | } | |
495 | ||
1da177e4 LT |
496 | static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) |
497 | { | |
498 | struct ethtool_value edata; | |
499 | ||
500 | if (!dev->ethtool_ops->set_sg) | |
501 | return -EOPNOTSUPP; | |
502 | ||
503 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
504 | return -EFAULT; | |
505 | ||
4ec93edb | 506 | if (edata.data && |
8648b305 | 507 | !(dev->features & NETIF_F_ALL_CSUM)) |
1da177e4 LT |
508 | return -EINVAL; |
509 | ||
510 | return __ethtool_set_sg(dev, edata.data); | |
511 | } | |
512 | ||
1da177e4 LT |
513 | static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) |
514 | { | |
515 | struct ethtool_value edata; | |
516 | ||
517 | if (!dev->ethtool_ops->set_tso) | |
518 | return -EOPNOTSUPP; | |
519 | ||
520 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
521 | return -EFAULT; | |
522 | ||
523 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
524 | return -EINVAL; | |
525 | ||
526 | return dev->ethtool_ops->set_tso(dev, edata.data); | |
527 | } | |
528 | ||
e89e9cf5 AR |
529 | static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr) |
530 | { | |
531 | struct ethtool_value edata; | |
532 | ||
533 | if (!dev->ethtool_ops->set_ufo) | |
534 | return -EOPNOTSUPP; | |
535 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
536 | return -EFAULT; | |
537 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
538 | return -EINVAL; | |
539 | if (edata.data && !(dev->features & NETIF_F_HW_CSUM)) | |
540 | return -EINVAL; | |
541 | return dev->ethtool_ops->set_ufo(dev, edata.data); | |
542 | } | |
543 | ||
37c3185a HX |
544 | static int ethtool_get_gso(struct net_device *dev, char __user *useraddr) |
545 | { | |
546 | struct ethtool_value edata = { ETHTOOL_GGSO }; | |
547 | ||
548 | edata.data = dev->features & NETIF_F_GSO; | |
549 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
550 | return -EFAULT; | |
551 | return 0; | |
552 | } | |
553 | ||
554 | static int ethtool_set_gso(struct net_device *dev, char __user *useraddr) | |
555 | { | |
556 | struct ethtool_value edata; | |
557 | ||
558 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
559 | return -EFAULT; | |
560 | if (edata.data) | |
561 | dev->features |= NETIF_F_GSO; | |
562 | else | |
563 | dev->features &= ~NETIF_F_GSO; | |
564 | return 0; | |
565 | } | |
566 | ||
1da177e4 LT |
567 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
568 | { | |
569 | struct ethtool_test test; | |
76fd8593 | 570 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 571 | u64 *data; |
ff03d49f | 572 | int ret, test_len; |
1da177e4 | 573 | |
ff03d49f JG |
574 | if (!ops->self_test) |
575 | return -EOPNOTSUPP; | |
576 | if (!ops->get_sset_count && !ops->self_test_count) | |
1da177e4 LT |
577 | return -EOPNOTSUPP; |
578 | ||
ff03d49f JG |
579 | if (ops->get_sset_count) |
580 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); | |
581 | else | |
582 | /* code path for obsolete hook */ | |
583 | test_len = ops->self_test_count(dev); | |
584 | if (test_len < 0) | |
585 | return test_len; | |
586 | WARN_ON(test_len == 0); | |
587 | ||
1da177e4 LT |
588 | if (copy_from_user(&test, useraddr, sizeof(test))) |
589 | return -EFAULT; | |
590 | ||
ff03d49f JG |
591 | test.len = test_len; |
592 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
593 | if (!data) |
594 | return -ENOMEM; | |
595 | ||
596 | ops->self_test(dev, &test, data); | |
597 | ||
598 | ret = -EFAULT; | |
599 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
600 | goto out; | |
601 | useraddr += sizeof(test); | |
602 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
603 | goto out; | |
604 | ret = 0; | |
605 | ||
606 | out: | |
607 | kfree(data); | |
608 | return ret; | |
609 | } | |
610 | ||
611 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
612 | { | |
613 | struct ethtool_gstrings gstrings; | |
76fd8593 | 614 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
615 | u8 *data; |
616 | int ret; | |
617 | ||
618 | if (!ops->get_strings) | |
619 | return -EOPNOTSUPP; | |
620 | ||
621 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) | |
622 | return -EFAULT; | |
623 | ||
ff03d49f JG |
624 | if (ops->get_sset_count) { |
625 | ret = ops->get_sset_count(dev, gstrings.string_set); | |
626 | if (ret < 0) | |
627 | return ret; | |
628 | ||
629 | gstrings.len = ret; | |
630 | } else { | |
631 | /* code path for obsolete hooks */ | |
632 | ||
633 | switch (gstrings.string_set) { | |
634 | case ETH_SS_TEST: | |
635 | if (!ops->self_test_count) | |
636 | return -EOPNOTSUPP; | |
637 | gstrings.len = ops->self_test_count(dev); | |
638 | break; | |
639 | case ETH_SS_STATS: | |
640 | if (!ops->get_stats_count) | |
641 | return -EOPNOTSUPP; | |
642 | gstrings.len = ops->get_stats_count(dev); | |
643 | break; | |
644 | default: | |
645 | return -EINVAL; | |
646 | } | |
1da177e4 LT |
647 | } |
648 | ||
649 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
650 | if (!data) | |
651 | return -ENOMEM; | |
652 | ||
653 | ops->get_strings(dev, gstrings.string_set, data); | |
654 | ||
655 | ret = -EFAULT; | |
656 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
657 | goto out; | |
658 | useraddr += sizeof(gstrings); | |
659 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
660 | goto out; | |
661 | ret = 0; | |
662 | ||
663 | out: | |
664 | kfree(data); | |
665 | return ret; | |
666 | } | |
667 | ||
668 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
669 | { | |
670 | struct ethtool_value id; | |
671 | ||
672 | if (!dev->ethtool_ops->phys_id) | |
673 | return -EOPNOTSUPP; | |
674 | ||
675 | if (copy_from_user(&id, useraddr, sizeof(id))) | |
676 | return -EFAULT; | |
677 | ||
678 | return dev->ethtool_ops->phys_id(dev, id.data); | |
679 | } | |
680 | ||
681 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
682 | { | |
683 | struct ethtool_stats stats; | |
76fd8593 | 684 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 685 | u64 *data; |
ff03d49f | 686 | int ret, n_stats; |
1da177e4 | 687 | |
ff03d49f JG |
688 | if (!ops->get_ethtool_stats) |
689 | return -EOPNOTSUPP; | |
690 | if (!ops->get_sset_count && !ops->get_stats_count) | |
1da177e4 LT |
691 | return -EOPNOTSUPP; |
692 | ||
ff03d49f JG |
693 | if (ops->get_sset_count) |
694 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); | |
695 | else | |
696 | /* code path for obsolete hook */ | |
697 | n_stats = ops->get_stats_count(dev); | |
698 | if (n_stats < 0) | |
699 | return n_stats; | |
700 | WARN_ON(n_stats == 0); | |
701 | ||
1da177e4 LT |
702 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
703 | return -EFAULT; | |
704 | ||
ff03d49f JG |
705 | stats.n_stats = n_stats; |
706 | data = kmalloc(n_stats * sizeof(u64), GFP_USER); | |
1da177e4 LT |
707 | if (!data) |
708 | return -ENOMEM; | |
709 | ||
710 | ops->get_ethtool_stats(dev, &stats, data); | |
711 | ||
712 | ret = -EFAULT; | |
713 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
714 | goto out; | |
715 | useraddr += sizeof(stats); | |
716 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
717 | goto out; | |
718 | ret = 0; | |
719 | ||
720 | out: | |
721 | kfree(data); | |
722 | return ret; | |
723 | } | |
724 | ||
0bf0519d | 725 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
726 | { |
727 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 728 | |
313674af | 729 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
730 | return -EFAULT; |
731 | ||
313674af MW |
732 | if (epaddr.size < dev->addr_len) |
733 | return -ETOOSMALL; | |
734 | epaddr.size = dev->addr_len; | |
a6f9a705 | 735 | |
a6f9a705 | 736 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 737 | return -EFAULT; |
a6f9a705 | 738 | useraddr += sizeof(epaddr); |
313674af MW |
739 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
740 | return -EFAULT; | |
741 | return 0; | |
a6f9a705 JW |
742 | } |
743 | ||
13c99b24 JG |
744 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
745 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 746 | { |
13c99b24 | 747 | struct ethtool_value edata = { cmd }; |
3ae7c0b2 | 748 | |
13c99b24 | 749 | if (!actor) |
3ae7c0b2 JG |
750 | return -EOPNOTSUPP; |
751 | ||
13c99b24 | 752 | edata.data = actor(dev); |
3ae7c0b2 JG |
753 | |
754 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
755 | return -EFAULT; | |
756 | return 0; | |
757 | } | |
758 | ||
13c99b24 JG |
759 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
760 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
761 | { |
762 | struct ethtool_value edata; | |
763 | ||
13c99b24 | 764 | if (!actor) |
3ae7c0b2 JG |
765 | return -EOPNOTSUPP; |
766 | ||
767 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
768 | return -EFAULT; | |
769 | ||
13c99b24 | 770 | actor(dev, edata.data); |
339bf024 JG |
771 | return 0; |
772 | } | |
773 | ||
13c99b24 JG |
774 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
775 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
776 | { |
777 | struct ethtool_value edata; | |
778 | ||
13c99b24 | 779 | if (!actor) |
339bf024 JG |
780 | return -EOPNOTSUPP; |
781 | ||
782 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
783 | return -EFAULT; | |
784 | ||
13c99b24 | 785 | return actor(dev, edata.data); |
339bf024 JG |
786 | } |
787 | ||
1da177e4 LT |
788 | /* The main entry point in this file. Called from net/core/dev.c */ |
789 | ||
881d966b | 790 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 791 | { |
881d966b | 792 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 LT |
793 | void __user *useraddr = ifr->ifr_data; |
794 | u32 ethcmd; | |
795 | int rc; | |
81e81575 | 796 | unsigned long old_features; |
1da177e4 | 797 | |
1da177e4 LT |
798 | if (!dev || !netif_device_present(dev)) |
799 | return -ENODEV; | |
800 | ||
801 | if (!dev->ethtool_ops) | |
61a44b9c | 802 | return -EOPNOTSUPP; |
1da177e4 LT |
803 | |
804 | if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) | |
805 | return -EFAULT; | |
806 | ||
75f3123c SH |
807 | /* Allow some commands to be done by anyone */ |
808 | switch(ethcmd) { | |
75f3123c | 809 | case ETHTOOL_GDRVINFO: |
75f3123c | 810 | case ETHTOOL_GMSGLVL: |
75f3123c SH |
811 | case ETHTOOL_GCOALESCE: |
812 | case ETHTOOL_GRINGPARAM: | |
813 | case ETHTOOL_GPAUSEPARAM: | |
814 | case ETHTOOL_GRXCSUM: | |
815 | case ETHTOOL_GTXCSUM: | |
816 | case ETHTOOL_GSG: | |
817 | case ETHTOOL_GSTRINGS: | |
75f3123c SH |
818 | case ETHTOOL_GTSO: |
819 | case ETHTOOL_GPERMADDR: | |
820 | case ETHTOOL_GUFO: | |
821 | case ETHTOOL_GGSO: | |
339bf024 JG |
822 | case ETHTOOL_GFLAGS: |
823 | case ETHTOOL_GPFLAGS: | |
75f3123c SH |
824 | break; |
825 | default: | |
826 | if (!capable(CAP_NET_ADMIN)) | |
827 | return -EPERM; | |
828 | } | |
829 | ||
e71a4783 | 830 | if (dev->ethtool_ops->begin) |
1da177e4 LT |
831 | if ((rc = dev->ethtool_ops->begin(dev)) < 0) |
832 | return rc; | |
833 | ||
d8a33ac4 SH |
834 | old_features = dev->features; |
835 | ||
1da177e4 LT |
836 | switch (ethcmd) { |
837 | case ETHTOOL_GSET: | |
838 | rc = ethtool_get_settings(dev, useraddr); | |
839 | break; | |
840 | case ETHTOOL_SSET: | |
841 | rc = ethtool_set_settings(dev, useraddr); | |
842 | break; | |
843 | case ETHTOOL_GDRVINFO: | |
844 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
845 | break; |
846 | case ETHTOOL_GREGS: | |
847 | rc = ethtool_get_regs(dev, useraddr); | |
848 | break; | |
849 | case ETHTOOL_GWOL: | |
850 | rc = ethtool_get_wol(dev, useraddr); | |
851 | break; | |
852 | case ETHTOOL_SWOL: | |
853 | rc = ethtool_set_wol(dev, useraddr); | |
854 | break; | |
855 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
856 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
857 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
858 | break; |
859 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
860 | rc = ethtool_set_value_void(dev, useraddr, |
861 | dev->ethtool_ops->set_msglevel); | |
1da177e4 LT |
862 | break; |
863 | case ETHTOOL_NWAY_RST: | |
864 | rc = ethtool_nway_reset(dev); | |
865 | break; | |
866 | case ETHTOOL_GLINK: | |
13c99b24 JG |
867 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
868 | dev->ethtool_ops->get_link); | |
1da177e4 LT |
869 | break; |
870 | case ETHTOOL_GEEPROM: | |
871 | rc = ethtool_get_eeprom(dev, useraddr); | |
872 | break; | |
873 | case ETHTOOL_SEEPROM: | |
874 | rc = ethtool_set_eeprom(dev, useraddr); | |
875 | break; | |
876 | case ETHTOOL_GCOALESCE: | |
877 | rc = ethtool_get_coalesce(dev, useraddr); | |
878 | break; | |
879 | case ETHTOOL_SCOALESCE: | |
880 | rc = ethtool_set_coalesce(dev, useraddr); | |
881 | break; | |
882 | case ETHTOOL_GRINGPARAM: | |
883 | rc = ethtool_get_ringparam(dev, useraddr); | |
884 | break; | |
885 | case ETHTOOL_SRINGPARAM: | |
886 | rc = ethtool_set_ringparam(dev, useraddr); | |
887 | break; | |
888 | case ETHTOOL_GPAUSEPARAM: | |
889 | rc = ethtool_get_pauseparam(dev, useraddr); | |
890 | break; | |
891 | case ETHTOOL_SPAUSEPARAM: | |
892 | rc = ethtool_set_pauseparam(dev, useraddr); | |
893 | break; | |
894 | case ETHTOOL_GRXCSUM: | |
13c99b24 JG |
895 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
896 | dev->ethtool_ops->get_rx_csum); | |
1da177e4 LT |
897 | break; |
898 | case ETHTOOL_SRXCSUM: | |
13c99b24 JG |
899 | rc = ethtool_set_value(dev, useraddr, |
900 | dev->ethtool_ops->set_rx_csum); | |
1da177e4 LT |
901 | break; |
902 | case ETHTOOL_GTXCSUM: | |
13c99b24 | 903 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
904 | (dev->ethtool_ops->get_tx_csum ? |
905 | dev->ethtool_ops->get_tx_csum : | |
906 | ethtool_op_get_tx_csum)); | |
1da177e4 LT |
907 | break; |
908 | case ETHTOOL_STXCSUM: | |
909 | rc = ethtool_set_tx_csum(dev, useraddr); | |
910 | break; | |
911 | case ETHTOOL_GSG: | |
13c99b24 | 912 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
913 | (dev->ethtool_ops->get_sg ? |
914 | dev->ethtool_ops->get_sg : | |
915 | ethtool_op_get_sg)); | |
1da177e4 LT |
916 | break; |
917 | case ETHTOOL_SSG: | |
918 | rc = ethtool_set_sg(dev, useraddr); | |
919 | break; | |
920 | case ETHTOOL_GTSO: | |
13c99b24 | 921 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
922 | (dev->ethtool_ops->get_tso ? |
923 | dev->ethtool_ops->get_tso : | |
924 | ethtool_op_get_tso)); | |
1da177e4 LT |
925 | break; |
926 | case ETHTOOL_STSO: | |
927 | rc = ethtool_set_tso(dev, useraddr); | |
928 | break; | |
929 | case ETHTOOL_TEST: | |
930 | rc = ethtool_self_test(dev, useraddr); | |
931 | break; | |
932 | case ETHTOOL_GSTRINGS: | |
933 | rc = ethtool_get_strings(dev, useraddr); | |
934 | break; | |
935 | case ETHTOOL_PHYS_ID: | |
936 | rc = ethtool_phys_id(dev, useraddr); | |
937 | break; | |
938 | case ETHTOOL_GSTATS: | |
939 | rc = ethtool_get_stats(dev, useraddr); | |
940 | break; | |
a6f9a705 JW |
941 | case ETHTOOL_GPERMADDR: |
942 | rc = ethtool_get_perm_addr(dev, useraddr); | |
943 | break; | |
e89e9cf5 | 944 | case ETHTOOL_GUFO: |
13c99b24 | 945 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
946 | (dev->ethtool_ops->get_ufo ? |
947 | dev->ethtool_ops->get_ufo : | |
948 | ethtool_op_get_ufo)); | |
e89e9cf5 AR |
949 | break; |
950 | case ETHTOOL_SUFO: | |
951 | rc = ethtool_set_ufo(dev, useraddr); | |
952 | break; | |
37c3185a HX |
953 | case ETHTOOL_GGSO: |
954 | rc = ethtool_get_gso(dev, useraddr); | |
955 | break; | |
956 | case ETHTOOL_SGSO: | |
957 | rc = ethtool_set_gso(dev, useraddr); | |
958 | break; | |
3ae7c0b2 | 959 | case ETHTOOL_GFLAGS: |
13c99b24 JG |
960 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
961 | dev->ethtool_ops->get_flags); | |
3ae7c0b2 JG |
962 | break; |
963 | case ETHTOOL_SFLAGS: | |
13c99b24 JG |
964 | rc = ethtool_set_value(dev, useraddr, |
965 | dev->ethtool_ops->set_flags); | |
3ae7c0b2 | 966 | break; |
339bf024 | 967 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
968 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
969 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
970 | break; |
971 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
972 | rc = ethtool_set_value(dev, useraddr, |
973 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 974 | break; |
1da177e4 | 975 | default: |
61a44b9c | 976 | rc = -EOPNOTSUPP; |
1da177e4 | 977 | } |
4ec93edb | 978 | |
e71a4783 | 979 | if (dev->ethtool_ops->complete) |
1da177e4 | 980 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
981 | |
982 | if (old_features != dev->features) | |
983 | netdev_features_change(dev); | |
984 | ||
1da177e4 | 985 | return rc; |
1da177e4 LT |
986 | } |
987 | ||
1da177e4 LT |
988 | EXPORT_SYMBOL(ethtool_op_get_link); |
989 | EXPORT_SYMBOL(ethtool_op_get_sg); | |
990 | EXPORT_SYMBOL(ethtool_op_get_tso); | |
991 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); | |
992 | EXPORT_SYMBOL(ethtool_op_set_sg); | |
993 | EXPORT_SYMBOL(ethtool_op_set_tso); | |
994 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); | |
69f6a0fa | 995 | EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |
6460d948 | 996 | EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum); |
e89e9cf5 AR |
997 | EXPORT_SYMBOL(ethtool_op_set_ufo); |
998 | EXPORT_SYMBOL(ethtool_op_get_ufo); | |
3ae7c0b2 JG |
999 | EXPORT_SYMBOL(ethtool_op_set_flags); |
1000 | EXPORT_SYMBOL(ethtool_op_get_flags); |