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