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 | ||
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 | ||
0853ad66 SB |
212 | static int ethtool_set_rxhash(struct net_device *dev, void __user *useraddr) |
213 | { | |
214 | struct ethtool_rxnfc cmd; | |
215 | ||
216 | if (!dev->ethtool_ops->set_rxhash) | |
217 | return -EOPNOTSUPP; | |
218 | ||
219 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
220 | return -EFAULT; | |
221 | ||
222 | return dev->ethtool_ops->set_rxhash(dev, &cmd); | |
223 | } | |
224 | ||
225 | static int ethtool_get_rxhash(struct net_device *dev, void __user *useraddr) | |
226 | { | |
227 | struct ethtool_rxnfc info; | |
228 | ||
229 | if (!dev->ethtool_ops->get_rxhash) | |
230 | return -EOPNOTSUPP; | |
231 | ||
232 | if (copy_from_user(&info, useraddr, sizeof(info))) | |
233 | return -EFAULT; | |
234 | ||
235 | dev->ethtool_ops->get_rxhash(dev, &info); | |
236 | ||
237 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
238 | return -EFAULT; | |
239 | return 0; | |
240 | } | |
241 | ||
1da177e4 LT |
242 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
243 | { | |
244 | struct ethtool_regs regs; | |
76fd8593 | 245 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
246 | void *regbuf; |
247 | int reglen, ret; | |
248 | ||
249 | if (!ops->get_regs || !ops->get_regs_len) | |
250 | return -EOPNOTSUPP; | |
251 | ||
252 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
253 | return -EFAULT; | |
254 | ||
255 | reglen = ops->get_regs_len(dev); | |
256 | if (regs.len > reglen) | |
257 | regs.len = reglen; | |
258 | ||
259 | regbuf = kmalloc(reglen, GFP_USER); | |
260 | if (!regbuf) | |
261 | return -ENOMEM; | |
262 | ||
263 | ops->get_regs(dev, ®s, regbuf); | |
264 | ||
265 | ret = -EFAULT; | |
266 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
267 | goto out; | |
268 | useraddr += offsetof(struct ethtool_regs, data); | |
269 | if (copy_to_user(useraddr, regbuf, regs.len)) | |
270 | goto out; | |
271 | ret = 0; | |
272 | ||
273 | out: | |
274 | kfree(regbuf); | |
275 | return ret; | |
276 | } | |
277 | ||
278 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) | |
279 | { | |
280 | struct ethtool_wolinfo wol = { ETHTOOL_GWOL }; | |
281 | ||
282 | if (!dev->ethtool_ops->get_wol) | |
283 | return -EOPNOTSUPP; | |
284 | ||
285 | dev->ethtool_ops->get_wol(dev, &wol); | |
286 | ||
287 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
288 | return -EFAULT; | |
289 | return 0; | |
290 | } | |
291 | ||
292 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
293 | { | |
294 | struct ethtool_wolinfo wol; | |
295 | ||
296 | if (!dev->ethtool_ops->set_wol) | |
297 | return -EOPNOTSUPP; | |
298 | ||
299 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
300 | return -EFAULT; | |
301 | ||
302 | return dev->ethtool_ops->set_wol(dev, &wol); | |
303 | } | |
304 | ||
1da177e4 LT |
305 | static int ethtool_nway_reset(struct net_device *dev) |
306 | { | |
307 | if (!dev->ethtool_ops->nway_reset) | |
308 | return -EOPNOTSUPP; | |
309 | ||
310 | return dev->ethtool_ops->nway_reset(dev); | |
311 | } | |
312 | ||
1da177e4 LT |
313 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
314 | { | |
315 | struct ethtool_eeprom eeprom; | |
76fd8593 | 316 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
317 | void __user *userbuf = useraddr + sizeof(eeprom); |
318 | u32 bytes_remaining; | |
1da177e4 | 319 | u8 *data; |
b131dd5d | 320 | int ret = 0; |
1da177e4 LT |
321 | |
322 | if (!ops->get_eeprom || !ops->get_eeprom_len) | |
323 | return -EOPNOTSUPP; | |
324 | ||
325 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
326 | return -EFAULT; | |
327 | ||
328 | /* Check for wrap and zero */ | |
329 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
330 | return -EINVAL; | |
331 | ||
332 | /* Check for exceeding total eeprom len */ | |
333 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
334 | return -EINVAL; | |
335 | ||
b131dd5d | 336 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
337 | if (!data) |
338 | return -ENOMEM; | |
339 | ||
b131dd5d MSB |
340 | bytes_remaining = eeprom.len; |
341 | while (bytes_remaining > 0) { | |
342 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
343 | ||
344 | ret = ops->get_eeprom(dev, &eeprom, data); | |
345 | if (ret) | |
346 | break; | |
347 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
348 | ret = -EFAULT; | |
349 | break; | |
350 | } | |
351 | userbuf += eeprom.len; | |
352 | eeprom.offset += eeprom.len; | |
353 | bytes_remaining -= eeprom.len; | |
354 | } | |
1da177e4 | 355 | |
c5835df9 MSB |
356 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
357 | eeprom.offset -= eeprom.len; | |
358 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
359 | ret = -EFAULT; | |
360 | ||
1da177e4 LT |
361 | kfree(data); |
362 | return ret; | |
363 | } | |
364 | ||
365 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) | |
366 | { | |
367 | struct ethtool_eeprom eeprom; | |
76fd8593 | 368 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
369 | void __user *userbuf = useraddr + sizeof(eeprom); |
370 | u32 bytes_remaining; | |
1da177e4 | 371 | u8 *data; |
b131dd5d | 372 | int ret = 0; |
1da177e4 LT |
373 | |
374 | if (!ops->set_eeprom || !ops->get_eeprom_len) | |
375 | return -EOPNOTSUPP; | |
376 | ||
377 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
378 | return -EFAULT; | |
379 | ||
380 | /* Check for wrap and zero */ | |
381 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
382 | return -EINVAL; | |
383 | ||
384 | /* Check for exceeding total eeprom len */ | |
385 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
386 | return -EINVAL; | |
387 | ||
b131dd5d | 388 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
389 | if (!data) |
390 | return -ENOMEM; | |
391 | ||
b131dd5d MSB |
392 | bytes_remaining = eeprom.len; |
393 | while (bytes_remaining > 0) { | |
394 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
395 | ||
396 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
397 | ret = -EFAULT; | |
398 | break; | |
399 | } | |
400 | ret = ops->set_eeprom(dev, &eeprom, data); | |
401 | if (ret) | |
402 | break; | |
403 | userbuf += eeprom.len; | |
404 | eeprom.offset += eeprom.len; | |
405 | bytes_remaining -= eeprom.len; | |
406 | } | |
1da177e4 | 407 | |
1da177e4 LT |
408 | kfree(data); |
409 | return ret; | |
410 | } | |
411 | ||
412 | static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr) | |
413 | { | |
414 | struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE }; | |
415 | ||
416 | if (!dev->ethtool_ops->get_coalesce) | |
417 | return -EOPNOTSUPP; | |
418 | ||
419 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
420 | ||
421 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
422 | return -EFAULT; | |
423 | return 0; | |
424 | } | |
425 | ||
426 | static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr) | |
427 | { | |
428 | struct ethtool_coalesce coalesce; | |
429 | ||
fa04ae5c | 430 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
431 | return -EOPNOTSUPP; |
432 | ||
433 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
434 | return -EFAULT; | |
435 | ||
436 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
437 | } | |
438 | ||
439 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
440 | { | |
441 | struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM }; | |
442 | ||
443 | if (!dev->ethtool_ops->get_ringparam) | |
444 | return -EOPNOTSUPP; | |
445 | ||
446 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
447 | ||
448 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
449 | return -EFAULT; | |
450 | return 0; | |
451 | } | |
452 | ||
453 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
454 | { | |
455 | struct ethtool_ringparam ringparam; | |
456 | ||
457 | if (!dev->ethtool_ops->set_ringparam) | |
458 | return -EOPNOTSUPP; | |
459 | ||
460 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
461 | return -EFAULT; | |
462 | ||
463 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
464 | } | |
465 | ||
466 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) | |
467 | { | |
468 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
469 | ||
470 | if (!dev->ethtool_ops->get_pauseparam) | |
471 | return -EOPNOTSUPP; | |
472 | ||
473 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
474 | ||
475 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
476 | return -EFAULT; | |
477 | return 0; | |
478 | } | |
479 | ||
480 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
481 | { | |
482 | struct ethtool_pauseparam pauseparam; | |
483 | ||
e1b90c41 | 484 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
485 | return -EOPNOTSUPP; |
486 | ||
487 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
488 | return -EFAULT; | |
489 | ||
490 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
491 | } | |
492 | ||
1da177e4 LT |
493 | static int __ethtool_set_sg(struct net_device *dev, u32 data) |
494 | { | |
495 | int err; | |
496 | ||
497 | if (!data && dev->ethtool_ops->set_tso) { | |
498 | err = dev->ethtool_ops->set_tso(dev, 0); | |
499 | if (err) | |
500 | return err; | |
501 | } | |
502 | ||
e89e9cf5 AR |
503 | if (!data && dev->ethtool_ops->set_ufo) { |
504 | err = dev->ethtool_ops->set_ufo(dev, 0); | |
505 | if (err) | |
506 | return err; | |
507 | } | |
1da177e4 LT |
508 | return dev->ethtool_ops->set_sg(dev, data); |
509 | } | |
510 | ||
511 | static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr) | |
512 | { | |
513 | struct ethtool_value edata; | |
514 | int err; | |
515 | ||
516 | if (!dev->ethtool_ops->set_tx_csum) | |
517 | return -EOPNOTSUPP; | |
518 | ||
519 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
520 | return -EFAULT; | |
521 | ||
522 | if (!edata.data && dev->ethtool_ops->set_sg) { | |
523 | err = __ethtool_set_sg(dev, 0); | |
524 | if (err) | |
525 | return err; | |
526 | } | |
527 | ||
528 | return dev->ethtool_ops->set_tx_csum(dev, edata.data); | |
529 | } | |
530 | ||
1da177e4 LT |
531 | static int ethtool_set_sg(struct net_device *dev, char __user *useraddr) |
532 | { | |
533 | struct ethtool_value edata; | |
534 | ||
535 | if (!dev->ethtool_ops->set_sg) | |
536 | return -EOPNOTSUPP; | |
537 | ||
538 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
539 | return -EFAULT; | |
540 | ||
4ec93edb | 541 | if (edata.data && |
8648b305 | 542 | !(dev->features & NETIF_F_ALL_CSUM)) |
1da177e4 LT |
543 | return -EINVAL; |
544 | ||
545 | return __ethtool_set_sg(dev, edata.data); | |
546 | } | |
547 | ||
1da177e4 LT |
548 | static int ethtool_set_tso(struct net_device *dev, char __user *useraddr) |
549 | { | |
550 | struct ethtool_value edata; | |
551 | ||
552 | if (!dev->ethtool_ops->set_tso) | |
553 | return -EOPNOTSUPP; | |
554 | ||
555 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
556 | return -EFAULT; | |
557 | ||
558 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
559 | return -EINVAL; | |
560 | ||
561 | return dev->ethtool_ops->set_tso(dev, edata.data); | |
562 | } | |
563 | ||
e89e9cf5 AR |
564 | static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr) |
565 | { | |
566 | struct ethtool_value edata; | |
567 | ||
568 | if (!dev->ethtool_ops->set_ufo) | |
569 | return -EOPNOTSUPP; | |
570 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
571 | return -EFAULT; | |
572 | if (edata.data && !(dev->features & NETIF_F_SG)) | |
573 | return -EINVAL; | |
574 | if (edata.data && !(dev->features & NETIF_F_HW_CSUM)) | |
575 | return -EINVAL; | |
576 | return dev->ethtool_ops->set_ufo(dev, edata.data); | |
577 | } | |
578 | ||
37c3185a HX |
579 | static int ethtool_get_gso(struct net_device *dev, char __user *useraddr) |
580 | { | |
581 | struct ethtool_value edata = { ETHTOOL_GGSO }; | |
582 | ||
583 | edata.data = dev->features & NETIF_F_GSO; | |
584 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
585 | return -EFAULT; | |
586 | return 0; | |
587 | } | |
588 | ||
589 | static int ethtool_set_gso(struct net_device *dev, char __user *useraddr) | |
590 | { | |
591 | struct ethtool_value edata; | |
592 | ||
593 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
594 | return -EFAULT; | |
595 | if (edata.data) | |
596 | dev->features |= NETIF_F_GSO; | |
597 | else | |
598 | dev->features &= ~NETIF_F_GSO; | |
599 | return 0; | |
600 | } | |
601 | ||
1da177e4 LT |
602 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
603 | { | |
604 | struct ethtool_test test; | |
76fd8593 | 605 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 606 | u64 *data; |
ff03d49f | 607 | int ret, test_len; |
1da177e4 | 608 | |
ff03d49f JG |
609 | if (!ops->self_test) |
610 | return -EOPNOTSUPP; | |
611 | if (!ops->get_sset_count && !ops->self_test_count) | |
1da177e4 LT |
612 | return -EOPNOTSUPP; |
613 | ||
ff03d49f JG |
614 | if (ops->get_sset_count) |
615 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); | |
616 | else | |
617 | /* code path for obsolete hook */ | |
618 | test_len = ops->self_test_count(dev); | |
619 | if (test_len < 0) | |
620 | return test_len; | |
621 | WARN_ON(test_len == 0); | |
622 | ||
1da177e4 LT |
623 | if (copy_from_user(&test, useraddr, sizeof(test))) |
624 | return -EFAULT; | |
625 | ||
ff03d49f JG |
626 | test.len = test_len; |
627 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
628 | if (!data) |
629 | return -ENOMEM; | |
630 | ||
631 | ops->self_test(dev, &test, data); | |
632 | ||
633 | ret = -EFAULT; | |
634 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
635 | goto out; | |
636 | useraddr += sizeof(test); | |
637 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
638 | goto out; | |
639 | ret = 0; | |
640 | ||
641 | out: | |
642 | kfree(data); | |
643 | return ret; | |
644 | } | |
645 | ||
646 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
647 | { | |
648 | struct ethtool_gstrings gstrings; | |
76fd8593 | 649 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
650 | u8 *data; |
651 | int ret; | |
652 | ||
653 | if (!ops->get_strings) | |
654 | return -EOPNOTSUPP; | |
655 | ||
656 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) | |
657 | return -EFAULT; | |
658 | ||
ff03d49f JG |
659 | if (ops->get_sset_count) { |
660 | ret = ops->get_sset_count(dev, gstrings.string_set); | |
661 | if (ret < 0) | |
662 | return ret; | |
663 | ||
664 | gstrings.len = ret; | |
665 | } else { | |
666 | /* code path for obsolete hooks */ | |
667 | ||
668 | switch (gstrings.string_set) { | |
669 | case ETH_SS_TEST: | |
670 | if (!ops->self_test_count) | |
671 | return -EOPNOTSUPP; | |
672 | gstrings.len = ops->self_test_count(dev); | |
673 | break; | |
674 | case ETH_SS_STATS: | |
675 | if (!ops->get_stats_count) | |
676 | return -EOPNOTSUPP; | |
677 | gstrings.len = ops->get_stats_count(dev); | |
678 | break; | |
679 | default: | |
680 | return -EINVAL; | |
681 | } | |
1da177e4 LT |
682 | } |
683 | ||
684 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
685 | if (!data) | |
686 | return -ENOMEM; | |
687 | ||
688 | ops->get_strings(dev, gstrings.string_set, data); | |
689 | ||
690 | ret = -EFAULT; | |
691 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
692 | goto out; | |
693 | useraddr += sizeof(gstrings); | |
694 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
695 | goto out; | |
696 | ret = 0; | |
697 | ||
698 | out: | |
699 | kfree(data); | |
700 | return ret; | |
701 | } | |
702 | ||
703 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
704 | { | |
705 | struct ethtool_value id; | |
706 | ||
707 | if (!dev->ethtool_ops->phys_id) | |
708 | return -EOPNOTSUPP; | |
709 | ||
710 | if (copy_from_user(&id, useraddr, sizeof(id))) | |
711 | return -EFAULT; | |
712 | ||
713 | return dev->ethtool_ops->phys_id(dev, id.data); | |
714 | } | |
715 | ||
716 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
717 | { | |
718 | struct ethtool_stats stats; | |
76fd8593 | 719 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 720 | u64 *data; |
ff03d49f | 721 | int ret, n_stats; |
1da177e4 | 722 | |
ff03d49f JG |
723 | if (!ops->get_ethtool_stats) |
724 | return -EOPNOTSUPP; | |
725 | if (!ops->get_sset_count && !ops->get_stats_count) | |
1da177e4 LT |
726 | return -EOPNOTSUPP; |
727 | ||
ff03d49f JG |
728 | if (ops->get_sset_count) |
729 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); | |
730 | else | |
731 | /* code path for obsolete hook */ | |
732 | n_stats = ops->get_stats_count(dev); | |
733 | if (n_stats < 0) | |
734 | return n_stats; | |
735 | WARN_ON(n_stats == 0); | |
736 | ||
1da177e4 LT |
737 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
738 | return -EFAULT; | |
739 | ||
ff03d49f JG |
740 | stats.n_stats = n_stats; |
741 | data = kmalloc(n_stats * sizeof(u64), GFP_USER); | |
1da177e4 LT |
742 | if (!data) |
743 | return -ENOMEM; | |
744 | ||
745 | ops->get_ethtool_stats(dev, &stats, data); | |
746 | ||
747 | ret = -EFAULT; | |
748 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
749 | goto out; | |
750 | useraddr += sizeof(stats); | |
751 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
752 | goto out; | |
753 | ret = 0; | |
754 | ||
755 | out: | |
756 | kfree(data); | |
757 | return ret; | |
758 | } | |
759 | ||
0bf0519d | 760 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
761 | { |
762 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 763 | |
313674af | 764 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
765 | return -EFAULT; |
766 | ||
313674af MW |
767 | if (epaddr.size < dev->addr_len) |
768 | return -ETOOSMALL; | |
769 | epaddr.size = dev->addr_len; | |
a6f9a705 | 770 | |
a6f9a705 | 771 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 772 | return -EFAULT; |
a6f9a705 | 773 | useraddr += sizeof(epaddr); |
313674af MW |
774 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
775 | return -EFAULT; | |
776 | return 0; | |
a6f9a705 JW |
777 | } |
778 | ||
13c99b24 JG |
779 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
780 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 781 | { |
13c99b24 | 782 | struct ethtool_value edata = { cmd }; |
3ae7c0b2 | 783 | |
13c99b24 | 784 | if (!actor) |
3ae7c0b2 JG |
785 | return -EOPNOTSUPP; |
786 | ||
13c99b24 | 787 | edata.data = actor(dev); |
3ae7c0b2 JG |
788 | |
789 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
790 | return -EFAULT; | |
791 | return 0; | |
792 | } | |
793 | ||
13c99b24 JG |
794 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
795 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
796 | { |
797 | struct ethtool_value edata; | |
798 | ||
13c99b24 | 799 | if (!actor) |
3ae7c0b2 JG |
800 | return -EOPNOTSUPP; |
801 | ||
802 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
803 | return -EFAULT; | |
804 | ||
13c99b24 | 805 | actor(dev, edata.data); |
339bf024 JG |
806 | return 0; |
807 | } | |
808 | ||
13c99b24 JG |
809 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
810 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
811 | { |
812 | struct ethtool_value edata; | |
813 | ||
13c99b24 | 814 | if (!actor) |
339bf024 JG |
815 | return -EOPNOTSUPP; |
816 | ||
817 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
818 | return -EFAULT; | |
819 | ||
13c99b24 | 820 | return actor(dev, edata.data); |
339bf024 JG |
821 | } |
822 | ||
1da177e4 LT |
823 | /* The main entry point in this file. Called from net/core/dev.c */ |
824 | ||
881d966b | 825 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 826 | { |
881d966b | 827 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 LT |
828 | void __user *useraddr = ifr->ifr_data; |
829 | u32 ethcmd; | |
830 | int rc; | |
81e81575 | 831 | unsigned long old_features; |
1da177e4 | 832 | |
1da177e4 LT |
833 | if (!dev || !netif_device_present(dev)) |
834 | return -ENODEV; | |
835 | ||
836 | if (!dev->ethtool_ops) | |
61a44b9c | 837 | return -EOPNOTSUPP; |
1da177e4 LT |
838 | |
839 | if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd))) | |
840 | return -EFAULT; | |
841 | ||
75f3123c SH |
842 | /* Allow some commands to be done by anyone */ |
843 | switch(ethcmd) { | |
75f3123c | 844 | case ETHTOOL_GDRVINFO: |
75f3123c | 845 | case ETHTOOL_GMSGLVL: |
75f3123c SH |
846 | case ETHTOOL_GCOALESCE: |
847 | case ETHTOOL_GRINGPARAM: | |
848 | case ETHTOOL_GPAUSEPARAM: | |
849 | case ETHTOOL_GRXCSUM: | |
850 | case ETHTOOL_GTXCSUM: | |
851 | case ETHTOOL_GSG: | |
852 | case ETHTOOL_GSTRINGS: | |
75f3123c SH |
853 | case ETHTOOL_GTSO: |
854 | case ETHTOOL_GPERMADDR: | |
855 | case ETHTOOL_GUFO: | |
856 | case ETHTOOL_GGSO: | |
339bf024 JG |
857 | case ETHTOOL_GFLAGS: |
858 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 859 | case ETHTOOL_GRXFH: |
75f3123c SH |
860 | break; |
861 | default: | |
862 | if (!capable(CAP_NET_ADMIN)) | |
863 | return -EPERM; | |
864 | } | |
865 | ||
e71a4783 | 866 | if (dev->ethtool_ops->begin) |
1da177e4 LT |
867 | if ((rc = dev->ethtool_ops->begin(dev)) < 0) |
868 | return rc; | |
869 | ||
d8a33ac4 SH |
870 | old_features = dev->features; |
871 | ||
1da177e4 LT |
872 | switch (ethcmd) { |
873 | case ETHTOOL_GSET: | |
874 | rc = ethtool_get_settings(dev, useraddr); | |
875 | break; | |
876 | case ETHTOOL_SSET: | |
877 | rc = ethtool_set_settings(dev, useraddr); | |
878 | break; | |
879 | case ETHTOOL_GDRVINFO: | |
880 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
881 | break; |
882 | case ETHTOOL_GREGS: | |
883 | rc = ethtool_get_regs(dev, useraddr); | |
884 | break; | |
885 | case ETHTOOL_GWOL: | |
886 | rc = ethtool_get_wol(dev, useraddr); | |
887 | break; | |
888 | case ETHTOOL_SWOL: | |
889 | rc = ethtool_set_wol(dev, useraddr); | |
890 | break; | |
891 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
892 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
893 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
894 | break; |
895 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
896 | rc = ethtool_set_value_void(dev, useraddr, |
897 | dev->ethtool_ops->set_msglevel); | |
1da177e4 LT |
898 | break; |
899 | case ETHTOOL_NWAY_RST: | |
900 | rc = ethtool_nway_reset(dev); | |
901 | break; | |
902 | case ETHTOOL_GLINK: | |
13c99b24 JG |
903 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
904 | dev->ethtool_ops->get_link); | |
1da177e4 LT |
905 | break; |
906 | case ETHTOOL_GEEPROM: | |
907 | rc = ethtool_get_eeprom(dev, useraddr); | |
908 | break; | |
909 | case ETHTOOL_SEEPROM: | |
910 | rc = ethtool_set_eeprom(dev, useraddr); | |
911 | break; | |
912 | case ETHTOOL_GCOALESCE: | |
913 | rc = ethtool_get_coalesce(dev, useraddr); | |
914 | break; | |
915 | case ETHTOOL_SCOALESCE: | |
916 | rc = ethtool_set_coalesce(dev, useraddr); | |
917 | break; | |
918 | case ETHTOOL_GRINGPARAM: | |
919 | rc = ethtool_get_ringparam(dev, useraddr); | |
920 | break; | |
921 | case ETHTOOL_SRINGPARAM: | |
922 | rc = ethtool_set_ringparam(dev, useraddr); | |
923 | break; | |
924 | case ETHTOOL_GPAUSEPARAM: | |
925 | rc = ethtool_get_pauseparam(dev, useraddr); | |
926 | break; | |
927 | case ETHTOOL_SPAUSEPARAM: | |
928 | rc = ethtool_set_pauseparam(dev, useraddr); | |
929 | break; | |
930 | case ETHTOOL_GRXCSUM: | |
13c99b24 JG |
931 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
932 | dev->ethtool_ops->get_rx_csum); | |
1da177e4 LT |
933 | break; |
934 | case ETHTOOL_SRXCSUM: | |
13c99b24 JG |
935 | rc = ethtool_set_value(dev, useraddr, |
936 | dev->ethtool_ops->set_rx_csum); | |
1da177e4 LT |
937 | break; |
938 | case ETHTOOL_GTXCSUM: | |
13c99b24 | 939 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
940 | (dev->ethtool_ops->get_tx_csum ? |
941 | dev->ethtool_ops->get_tx_csum : | |
942 | ethtool_op_get_tx_csum)); | |
1da177e4 LT |
943 | break; |
944 | case ETHTOOL_STXCSUM: | |
945 | rc = ethtool_set_tx_csum(dev, useraddr); | |
946 | break; | |
947 | case ETHTOOL_GSG: | |
13c99b24 | 948 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
949 | (dev->ethtool_ops->get_sg ? |
950 | dev->ethtool_ops->get_sg : | |
951 | ethtool_op_get_sg)); | |
1da177e4 LT |
952 | break; |
953 | case ETHTOOL_SSG: | |
954 | rc = ethtool_set_sg(dev, useraddr); | |
955 | break; | |
956 | case ETHTOOL_GTSO: | |
13c99b24 | 957 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
958 | (dev->ethtool_ops->get_tso ? |
959 | dev->ethtool_ops->get_tso : | |
960 | ethtool_op_get_tso)); | |
1da177e4 LT |
961 | break; |
962 | case ETHTOOL_STSO: | |
963 | rc = ethtool_set_tso(dev, useraddr); | |
964 | break; | |
965 | case ETHTOOL_TEST: | |
966 | rc = ethtool_self_test(dev, useraddr); | |
967 | break; | |
968 | case ETHTOOL_GSTRINGS: | |
969 | rc = ethtool_get_strings(dev, useraddr); | |
970 | break; | |
971 | case ETHTOOL_PHYS_ID: | |
972 | rc = ethtool_phys_id(dev, useraddr); | |
973 | break; | |
974 | case ETHTOOL_GSTATS: | |
975 | rc = ethtool_get_stats(dev, useraddr); | |
976 | break; | |
a6f9a705 JW |
977 | case ETHTOOL_GPERMADDR: |
978 | rc = ethtool_get_perm_addr(dev, useraddr); | |
979 | break; | |
e89e9cf5 | 980 | case ETHTOOL_GUFO: |
13c99b24 | 981 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
88d3aafd JG |
982 | (dev->ethtool_ops->get_ufo ? |
983 | dev->ethtool_ops->get_ufo : | |
984 | ethtool_op_get_ufo)); | |
e89e9cf5 AR |
985 | break; |
986 | case ETHTOOL_SUFO: | |
987 | rc = ethtool_set_ufo(dev, useraddr); | |
988 | break; | |
37c3185a HX |
989 | case ETHTOOL_GGSO: |
990 | rc = ethtool_get_gso(dev, useraddr); | |
991 | break; | |
992 | case ETHTOOL_SGSO: | |
993 | rc = ethtool_set_gso(dev, useraddr); | |
994 | break; | |
3ae7c0b2 | 995 | case ETHTOOL_GFLAGS: |
13c99b24 JG |
996 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
997 | dev->ethtool_ops->get_flags); | |
3ae7c0b2 JG |
998 | break; |
999 | case ETHTOOL_SFLAGS: | |
13c99b24 JG |
1000 | rc = ethtool_set_value(dev, useraddr, |
1001 | dev->ethtool_ops->set_flags); | |
3ae7c0b2 | 1002 | break; |
339bf024 | 1003 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
1004 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
1005 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
1006 | break; |
1007 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
1008 | rc = ethtool_set_value(dev, useraddr, |
1009 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 1010 | break; |
0853ad66 SB |
1011 | case ETHTOOL_GRXFH: |
1012 | rc = ethtool_get_rxhash(dev, useraddr); | |
1013 | break; | |
1014 | case ETHTOOL_SRXFH: | |
1015 | rc = ethtool_set_rxhash(dev, useraddr); | |
1016 | break; | |
1da177e4 | 1017 | default: |
61a44b9c | 1018 | rc = -EOPNOTSUPP; |
1da177e4 | 1019 | } |
4ec93edb | 1020 | |
e71a4783 | 1021 | if (dev->ethtool_ops->complete) |
1da177e4 | 1022 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
1023 | |
1024 | if (old_features != dev->features) | |
1025 | netdev_features_change(dev); | |
1026 | ||
1da177e4 | 1027 | return rc; |
1da177e4 LT |
1028 | } |
1029 | ||
1da177e4 LT |
1030 | EXPORT_SYMBOL(ethtool_op_get_link); |
1031 | EXPORT_SYMBOL(ethtool_op_get_sg); | |
1032 | EXPORT_SYMBOL(ethtool_op_get_tso); | |
1033 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); | |
1034 | EXPORT_SYMBOL(ethtool_op_set_sg); | |
1035 | EXPORT_SYMBOL(ethtool_op_set_tso); | |
1036 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); | |
69f6a0fa | 1037 | EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |
6460d948 | 1038 | EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum); |
e89e9cf5 AR |
1039 | EXPORT_SYMBOL(ethtool_op_set_ufo); |
1040 | EXPORT_SYMBOL(ethtool_op_get_ufo); | |
3ae7c0b2 JG |
1041 | EXPORT_SYMBOL(ethtool_op_set_flags); |
1042 | EXPORT_SYMBOL(ethtool_op_get_flags); |