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> | |
d17792eb | 20 | #include <linux/bitops.h> |
97f8aefb | 21 | #include <linux/uaccess.h> |
73da16c2 | 22 | #include <linux/vmalloc.h> |
5a0e3ad6 | 23 | #include <linux/slab.h> |
68f512f2 BH |
24 | #include <linux/rtnetlink.h> |
25 | #include <linux/sched.h> | |
1da177e4 | 26 | |
4ec93edb | 27 | /* |
1da177e4 LT |
28 | * Some useful ethtool_ops methods that're device independent. |
29 | * If we find that all drivers want to do the same thing here, | |
30 | * we can turn these into dev_() function calls. | |
31 | */ | |
32 | ||
33 | u32 ethtool_op_get_link(struct net_device *dev) | |
34 | { | |
35 | return netif_carrier_ok(dev) ? 1 : 0; | |
36 | } | |
97f8aefb | 37 | EXPORT_SYMBOL(ethtool_op_get_link); |
1da177e4 LT |
38 | |
39 | u32 ethtool_op_get_tx_csum(struct net_device *dev) | |
40 | { | |
8648b305 | 41 | return (dev->features & NETIF_F_ALL_CSUM) != 0; |
1da177e4 | 42 | } |
8a729fce | 43 | EXPORT_SYMBOL(ethtool_op_get_tx_csum); |
1da177e4 LT |
44 | |
45 | int ethtool_op_set_tx_csum(struct net_device *dev, u32 data) | |
46 | { | |
47 | if (data) | |
48 | dev->features |= NETIF_F_IP_CSUM; | |
49 | else | |
50 | dev->features &= ~NETIF_F_IP_CSUM; | |
51 | ||
52 | return 0; | |
53 | } | |
9a279ea3 | 54 | EXPORT_SYMBOL(ethtool_op_set_tx_csum); |
1da177e4 | 55 | |
69f6a0fa JM |
56 | int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data) |
57 | { | |
58 | if (data) | |
59 | dev->features |= NETIF_F_HW_CSUM; | |
60 | else | |
61 | dev->features &= ~NETIF_F_HW_CSUM; | |
62 | ||
63 | return 0; | |
64 | } | |
97f8aefb | 65 | EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum); |
6460d948 MC |
66 | |
67 | int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data) | |
68 | { | |
69 | if (data) | |
70 | dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; | |
71 | else | |
72 | dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM); | |
73 | ||
74 | return 0; | |
75 | } | |
97f8aefb | 76 | EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum); |
6460d948 | 77 | |
1da177e4 LT |
78 | u32 ethtool_op_get_sg(struct net_device *dev) |
79 | { | |
80 | return (dev->features & NETIF_F_SG) != 0; | |
81 | } | |
97f8aefb | 82 | EXPORT_SYMBOL(ethtool_op_get_sg); |
1da177e4 LT |
83 | |
84 | int ethtool_op_set_sg(struct net_device *dev, u32 data) | |
85 | { | |
86 | if (data) | |
87 | dev->features |= NETIF_F_SG; | |
88 | else | |
89 | dev->features &= ~NETIF_F_SG; | |
90 | ||
91 | return 0; | |
92 | } | |
97f8aefb | 93 | EXPORT_SYMBOL(ethtool_op_set_sg); |
1da177e4 LT |
94 | |
95 | u32 ethtool_op_get_tso(struct net_device *dev) | |
96 | { | |
97 | return (dev->features & NETIF_F_TSO) != 0; | |
98 | } | |
97f8aefb | 99 | EXPORT_SYMBOL(ethtool_op_get_tso); |
1da177e4 LT |
100 | |
101 | int ethtool_op_set_tso(struct net_device *dev, u32 data) | |
102 | { | |
103 | if (data) | |
104 | dev->features |= NETIF_F_TSO; | |
105 | else | |
106 | dev->features &= ~NETIF_F_TSO; | |
107 | ||
108 | return 0; | |
109 | } | |
97f8aefb | 110 | EXPORT_SYMBOL(ethtool_op_set_tso); |
1da177e4 | 111 | |
e89e9cf5 AR |
112 | u32 ethtool_op_get_ufo(struct net_device *dev) |
113 | { | |
114 | return (dev->features & NETIF_F_UFO) != 0; | |
115 | } | |
97f8aefb | 116 | EXPORT_SYMBOL(ethtool_op_get_ufo); |
e89e9cf5 AR |
117 | |
118 | int ethtool_op_set_ufo(struct net_device *dev, u32 data) | |
119 | { | |
120 | if (data) | |
121 | dev->features |= NETIF_F_UFO; | |
122 | else | |
123 | dev->features &= ~NETIF_F_UFO; | |
124 | return 0; | |
125 | } | |
97f8aefb | 126 | EXPORT_SYMBOL(ethtool_op_set_ufo); |
e89e9cf5 | 127 | |
3ae7c0b2 JG |
128 | /* the following list of flags are the same as their associated |
129 | * NETIF_F_xxx values in include/linux/netdevice.h | |
130 | */ | |
131 | static const u32 flags_dup_features = | |
d5dbda23 JG |
132 | (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE | |
133 | ETH_FLAG_RXHASH); | |
3ae7c0b2 JG |
134 | |
135 | u32 ethtool_op_get_flags(struct net_device *dev) | |
136 | { | |
137 | /* in the future, this function will probably contain additional | |
138 | * handling for flags which are not so easily handled | |
139 | * by a simple masking operation | |
140 | */ | |
141 | ||
142 | return dev->features & flags_dup_features; | |
143 | } | |
97f8aefb | 144 | EXPORT_SYMBOL(ethtool_op_get_flags); |
3ae7c0b2 | 145 | |
673e63c6 SG |
146 | /* Check if device can enable (or disable) particular feature coded in "data" |
147 | * argument. Flags "supported" describe features that can be toggled by device. | |
148 | * If feature can not be toggled, it state (enabled or disabled) must match | |
149 | * hardcoded device features state, otherwise flags are marked as invalid. | |
150 | */ | |
151 | bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported) | |
152 | { | |
153 | u32 features = dev->features & flags_dup_features; | |
154 | /* "data" can contain only flags_dup_features bits, | |
155 | * see __ethtool_set_flags */ | |
156 | ||
157 | return (features & ~supported) != (data & ~supported); | |
158 | } | |
159 | EXPORT_SYMBOL(ethtool_invalid_flags); | |
160 | ||
1437ce39 | 161 | int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported) |
3ae7c0b2 | 162 | { |
673e63c6 | 163 | if (ethtool_invalid_flags(dev, data, supported)) |
1437ce39 | 164 | return -EINVAL; |
0d643e1f | 165 | |
1437ce39 BH |
166 | dev->features = ((dev->features & ~flags_dup_features) | |
167 | (data & flags_dup_features)); | |
3ae7c0b2 JG |
168 | return 0; |
169 | } | |
97f8aefb | 170 | EXPORT_SYMBOL(ethtool_op_set_flags); |
3ae7c0b2 | 171 | |
1da177e4 LT |
172 | /* Handlers for each ethtool command */ |
173 | ||
5455c699 MM |
174 | #define ETHTOOL_DEV_FEATURE_WORDS 1 |
175 | ||
4e4db200 MM |
176 | static void ethtool_get_features_compat(struct net_device *dev, |
177 | struct ethtool_get_features_block *features) | |
178 | { | |
179 | if (!dev->ethtool_ops) | |
180 | return; | |
181 | ||
182 | /* getting RX checksum */ | |
183 | if (dev->ethtool_ops->get_rx_csum) | |
184 | if (dev->ethtool_ops->get_rx_csum(dev)) | |
185 | features[0].active |= NETIF_F_RXCSUM; | |
39fc0ce5 MM |
186 | |
187 | /* mark legacy-changeable features */ | |
188 | if (dev->ethtool_ops->set_sg) | |
189 | features[0].available |= NETIF_F_SG; | |
190 | if (dev->ethtool_ops->set_tx_csum) | |
191 | features[0].available |= NETIF_F_ALL_CSUM; | |
192 | if (dev->ethtool_ops->set_tso) | |
193 | features[0].available |= NETIF_F_ALL_TSO; | |
194 | if (dev->ethtool_ops->set_rx_csum) | |
195 | features[0].available |= NETIF_F_RXCSUM; | |
196 | if (dev->ethtool_ops->set_flags) | |
197 | features[0].available |= flags_dup_features; | |
198 | } | |
199 | ||
200 | static int ethtool_set_feature_compat(struct net_device *dev, | |
201 | int (*legacy_set)(struct net_device *, u32), | |
202 | struct ethtool_set_features_block *features, u32 mask) | |
203 | { | |
204 | u32 do_set; | |
205 | ||
206 | if (!legacy_set) | |
207 | return 0; | |
208 | ||
209 | if (!(features[0].valid & mask)) | |
210 | return 0; | |
211 | ||
212 | features[0].valid &= ~mask; | |
213 | ||
214 | do_set = !!(features[0].requested & mask); | |
215 | ||
216 | if (legacy_set(dev, do_set) < 0) | |
217 | netdev_info(dev, | |
218 | "Legacy feature change (%s) failed for 0x%08x\n", | |
219 | do_set ? "set" : "clear", mask); | |
220 | ||
221 | return 1; | |
222 | } | |
223 | ||
fd0daf9d MM |
224 | static int ethtool_set_flags_compat(struct net_device *dev, |
225 | int (*legacy_set)(struct net_device *, u32), | |
226 | struct ethtool_set_features_block *features, u32 mask) | |
227 | { | |
228 | u32 value; | |
229 | ||
230 | if (!legacy_set) | |
231 | return 0; | |
232 | ||
233 | if (!(features[0].valid & mask)) | |
234 | return 0; | |
235 | ||
236 | value = dev->features & ~features[0].valid; | |
237 | value |= features[0].requested; | |
238 | ||
239 | features[0].valid &= ~mask; | |
240 | ||
241 | if (legacy_set(dev, value & mask) < 0) | |
242 | netdev_info(dev, "Legacy flags change failed\n"); | |
243 | ||
244 | return 1; | |
245 | } | |
246 | ||
39fc0ce5 MM |
247 | static int ethtool_set_features_compat(struct net_device *dev, |
248 | struct ethtool_set_features_block *features) | |
249 | { | |
250 | int compat; | |
251 | ||
252 | if (!dev->ethtool_ops) | |
253 | return 0; | |
254 | ||
255 | compat = ethtool_set_feature_compat(dev, dev->ethtool_ops->set_sg, | |
256 | features, NETIF_F_SG); | |
257 | compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tx_csum, | |
258 | features, NETIF_F_ALL_CSUM); | |
259 | compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tso, | |
260 | features, NETIF_F_ALL_TSO); | |
261 | compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum, | |
262 | features, NETIF_F_RXCSUM); | |
fd0daf9d | 263 | compat |= ethtool_set_flags_compat(dev, dev->ethtool_ops->set_flags, |
39fc0ce5 MM |
264 | features, flags_dup_features); |
265 | ||
266 | return compat; | |
4e4db200 MM |
267 | } |
268 | ||
5455c699 MM |
269 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
270 | { | |
271 | struct ethtool_gfeatures cmd = { | |
272 | .cmd = ETHTOOL_GFEATURES, | |
273 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
274 | }; | |
275 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS] = { | |
276 | { | |
277 | .available = dev->hw_features, | |
278 | .requested = dev->wanted_features, | |
279 | .active = dev->features, | |
280 | .never_changed = NETIF_F_NEVER_CHANGE, | |
281 | }, | |
282 | }; | |
283 | u32 __user *sizeaddr; | |
284 | u32 copy_size; | |
285 | ||
4e4db200 MM |
286 | ethtool_get_features_compat(dev, features); |
287 | ||
5455c699 MM |
288 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); |
289 | if (get_user(copy_size, sizeaddr)) | |
290 | return -EFAULT; | |
291 | ||
292 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
293 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
294 | ||
295 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
296 | return -EFAULT; | |
297 | useraddr += sizeof(cmd); | |
298 | if (copy_to_user(useraddr, features, copy_size * sizeof(*features))) | |
299 | return -EFAULT; | |
300 | ||
301 | return 0; | |
302 | } | |
303 | ||
304 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
305 | { | |
306 | struct ethtool_sfeatures cmd; | |
307 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
308 | int ret = 0; | |
309 | ||
310 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
311 | return -EFAULT; | |
312 | useraddr += sizeof(cmd); | |
313 | ||
314 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
315 | return -EINVAL; | |
316 | ||
317 | if (copy_from_user(features, useraddr, sizeof(features))) | |
318 | return -EFAULT; | |
319 | ||
320 | if (features[0].valid & ~NETIF_F_ETHTOOL_BITS) | |
321 | return -EINVAL; | |
322 | ||
39fc0ce5 MM |
323 | if (ethtool_set_features_compat(dev, features)) |
324 | ret |= ETHTOOL_F_COMPAT; | |
325 | ||
5455c699 MM |
326 | if (features[0].valid & ~dev->hw_features) { |
327 | features[0].valid &= dev->hw_features; | |
328 | ret |= ETHTOOL_F_UNSUPPORTED; | |
329 | } | |
330 | ||
331 | dev->wanted_features &= ~features[0].valid; | |
332 | dev->wanted_features |= features[0].valid & features[0].requested; | |
6cb6a27c | 333 | __netdev_update_features(dev); |
5455c699 MM |
334 | |
335 | if ((dev->wanted_features ^ dev->features) & features[0].valid) | |
336 | ret |= ETHTOOL_F_WISH; | |
337 | ||
338 | return ret; | |
339 | } | |
340 | ||
341 | static const char netdev_features_strings[ETHTOOL_DEV_FEATURE_WORDS * 32][ETH_GSTRING_LEN] = { | |
342 | /* NETIF_F_SG */ "tx-scatter-gather", | |
343 | /* NETIF_F_IP_CSUM */ "tx-checksum-ipv4", | |
344 | /* NETIF_F_NO_CSUM */ "tx-checksum-unneeded", | |
345 | /* NETIF_F_HW_CSUM */ "tx-checksum-ip-generic", | |
7cc31a9a | 346 | /* NETIF_F_IPV6_CSUM */ "tx-checksum-ipv6", |
5455c699 MM |
347 | /* NETIF_F_HIGHDMA */ "highdma", |
348 | /* NETIF_F_FRAGLIST */ "tx-scatter-gather-fraglist", | |
349 | /* NETIF_F_HW_VLAN_TX */ "tx-vlan-hw-insert", | |
350 | ||
351 | /* NETIF_F_HW_VLAN_RX */ "rx-vlan-hw-parse", | |
352 | /* NETIF_F_HW_VLAN_FILTER */ "rx-vlan-filter", | |
353 | /* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged", | |
354 | /* NETIF_F_GSO */ "tx-generic-segmentation", | |
355 | /* NETIF_F_LLTX */ "tx-lockless", | |
356 | /* NETIF_F_NETNS_LOCAL */ "netns-local", | |
357 | /* NETIF_F_GRO */ "rx-gro", | |
358 | /* NETIF_F_LRO */ "rx-lro", | |
359 | ||
360 | /* NETIF_F_TSO */ "tx-tcp-segmentation", | |
361 | /* NETIF_F_UFO */ "tx-udp-fragmentation", | |
362 | /* NETIF_F_GSO_ROBUST */ "tx-gso-robust", | |
363 | /* NETIF_F_TSO_ECN */ "tx-tcp-ecn-segmentation", | |
364 | /* NETIF_F_TSO6 */ "tx-tcp6-segmentation", | |
365 | /* NETIF_F_FSO */ "tx-fcoe-segmentation", | |
366 | "", | |
367 | "", | |
368 | ||
369 | /* NETIF_F_FCOE_CRC */ "tx-checksum-fcoe-crc", | |
370 | /* NETIF_F_SCTP_CSUM */ "tx-checksum-sctp", | |
371 | /* NETIF_F_FCOE_MTU */ "fcoe-mtu", | |
372 | /* NETIF_F_NTUPLE */ "rx-ntuple-filter", | |
373 | /* NETIF_F_RXHASH */ "rx-hashing", | |
e83d360d | 374 | /* NETIF_F_RXCSUM */ "rx-checksum", |
864b5418 | 375 | /* NETIF_F_NOCACHE_COPY */ "tx-nocache-copy", |
eed2a12f | 376 | /* NETIF_F_LOOPBACK */ "loopback", |
5455c699 MM |
377 | }; |
378 | ||
340ae165 MM |
379 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
380 | { | |
381 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
382 | ||
5455c699 MM |
383 | if (sset == ETH_SS_FEATURES) |
384 | return ARRAY_SIZE(netdev_features_strings); | |
385 | ||
340ae165 MM |
386 | if (ops && ops->get_sset_count && ops->get_strings) |
387 | return ops->get_sset_count(dev, sset); | |
388 | else | |
389 | return -EOPNOTSUPP; | |
390 | } | |
391 | ||
392 | static void __ethtool_get_strings(struct net_device *dev, | |
393 | u32 stringset, u8 *data) | |
394 | { | |
395 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
396 | ||
5455c699 MM |
397 | if (stringset == ETH_SS_FEATURES) |
398 | memcpy(data, netdev_features_strings, | |
399 | sizeof(netdev_features_strings)); | |
400 | else | |
401 | /* ops->get_strings is valid because checked earlier */ | |
402 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
403 | } |
404 | ||
0a417704 MM |
405 | static u32 ethtool_get_feature_mask(u32 eth_cmd) |
406 | { | |
407 | /* feature masks of legacy discrete ethtool ops */ | |
408 | ||
409 | switch (eth_cmd) { | |
410 | case ETHTOOL_GTXCSUM: | |
411 | case ETHTOOL_STXCSUM: | |
412 | return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM; | |
e83d360d MM |
413 | case ETHTOOL_GRXCSUM: |
414 | case ETHTOOL_SRXCSUM: | |
415 | return NETIF_F_RXCSUM; | |
0a417704 MM |
416 | case ETHTOOL_GSG: |
417 | case ETHTOOL_SSG: | |
418 | return NETIF_F_SG; | |
419 | case ETHTOOL_GTSO: | |
420 | case ETHTOOL_STSO: | |
421 | return NETIF_F_ALL_TSO; | |
422 | case ETHTOOL_GUFO: | |
423 | case ETHTOOL_SUFO: | |
424 | return NETIF_F_UFO; | |
425 | case ETHTOOL_GGSO: | |
426 | case ETHTOOL_SGSO: | |
427 | return NETIF_F_GSO; | |
428 | case ETHTOOL_GGRO: | |
429 | case ETHTOOL_SGRO: | |
430 | return NETIF_F_GRO; | |
431 | default: | |
432 | BUG(); | |
433 | } | |
434 | } | |
435 | ||
436 | static void *__ethtool_get_one_feature_actor(struct net_device *dev, u32 ethcmd) | |
437 | { | |
438 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
439 | ||
440 | if (!ops) | |
441 | return NULL; | |
442 | ||
443 | switch (ethcmd) { | |
444 | case ETHTOOL_GTXCSUM: | |
445 | return ops->get_tx_csum; | |
e83d360d MM |
446 | case ETHTOOL_GRXCSUM: |
447 | return ops->get_rx_csum; | |
0a417704 MM |
448 | case ETHTOOL_SSG: |
449 | return ops->get_sg; | |
450 | case ETHTOOL_STSO: | |
451 | return ops->get_tso; | |
452 | case ETHTOOL_SUFO: | |
453 | return ops->get_ufo; | |
454 | default: | |
455 | return NULL; | |
456 | } | |
457 | } | |
458 | ||
e83d360d MM |
459 | static u32 __ethtool_get_rx_csum_oldbug(struct net_device *dev) |
460 | { | |
461 | return !!(dev->features & NETIF_F_ALL_CSUM); | |
462 | } | |
463 | ||
0a417704 MM |
464 | static int ethtool_get_one_feature(struct net_device *dev, |
465 | char __user *useraddr, u32 ethcmd) | |
466 | { | |
86794881 | 467 | u32 mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
468 | struct ethtool_value edata = { |
469 | .cmd = ethcmd, | |
86794881 | 470 | .data = !!(dev->features & mask), |
0a417704 | 471 | }; |
0a417704 | 472 | |
86794881 MM |
473 | /* compatibility with discrete get_ ops */ |
474 | if (!(dev->hw_features & mask)) { | |
475 | u32 (*actor)(struct net_device *); | |
476 | ||
477 | actor = __ethtool_get_one_feature_actor(dev, ethcmd); | |
478 | ||
e83d360d MM |
479 | /* bug compatibility with old get_rx_csum */ |
480 | if (ethcmd == ETHTOOL_GRXCSUM && !actor) | |
481 | actor = __ethtool_get_rx_csum_oldbug; | |
482 | ||
86794881 MM |
483 | if (actor) |
484 | edata.data = actor(dev); | |
485 | } | |
0a417704 MM |
486 | |
487 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
488 | return -EFAULT; | |
489 | return 0; | |
490 | } | |
491 | ||
492 | static int __ethtool_set_tx_csum(struct net_device *dev, u32 data); | |
e83d360d | 493 | static int __ethtool_set_rx_csum(struct net_device *dev, u32 data); |
0a417704 MM |
494 | static int __ethtool_set_sg(struct net_device *dev, u32 data); |
495 | static int __ethtool_set_tso(struct net_device *dev, u32 data); | |
496 | static int __ethtool_set_ufo(struct net_device *dev, u32 data); | |
497 | ||
498 | static int ethtool_set_one_feature(struct net_device *dev, | |
499 | void __user *useraddr, u32 ethcmd) | |
500 | { | |
501 | struct ethtool_value edata; | |
502 | u32 mask; | |
503 | ||
504 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
505 | return -EFAULT; | |
506 | ||
86794881 MM |
507 | mask = ethtool_get_feature_mask(ethcmd); |
508 | mask &= dev->hw_features; | |
509 | if (mask) { | |
510 | if (edata.data) | |
511 | dev->wanted_features |= mask; | |
512 | else | |
513 | dev->wanted_features &= ~mask; | |
514 | ||
6cb6a27c | 515 | __netdev_update_features(dev); |
86794881 MM |
516 | return 0; |
517 | } | |
518 | ||
519 | /* Driver is not converted to ndo_fix_features or does not | |
520 | * support changing this offload. In the latter case it won't | |
521 | * have corresponding ethtool_ops field set. | |
522 | * | |
523 | * Following part is to be removed after all drivers advertise | |
524 | * their changeable features in netdev->hw_features and stop | |
525 | * using discrete offload setting ops. | |
526 | */ | |
527 | ||
0a417704 MM |
528 | switch (ethcmd) { |
529 | case ETHTOOL_STXCSUM: | |
530 | return __ethtool_set_tx_csum(dev, edata.data); | |
e83d360d MM |
531 | case ETHTOOL_SRXCSUM: |
532 | return __ethtool_set_rx_csum(dev, edata.data); | |
0a417704 MM |
533 | case ETHTOOL_SSG: |
534 | return __ethtool_set_sg(dev, edata.data); | |
535 | case ETHTOOL_STSO: | |
536 | return __ethtool_set_tso(dev, edata.data); | |
537 | case ETHTOOL_SUFO: | |
538 | return __ethtool_set_ufo(dev, edata.data); | |
0a417704 MM |
539 | default: |
540 | return -EOPNOTSUPP; | |
541 | } | |
542 | } | |
543 | ||
27660515 | 544 | int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c MM |
545 | { |
546 | u32 changed; | |
547 | ||
548 | if (data & ~flags_dup_features) | |
549 | return -EINVAL; | |
550 | ||
551 | /* legacy set_flags() op */ | |
552 | if (dev->ethtool_ops->set_flags) { | |
553 | if (unlikely(dev->hw_features & flags_dup_features)) | |
554 | netdev_warn(dev, | |
555 | "driver BUG: mixed hw_features and set_flags()\n"); | |
556 | return dev->ethtool_ops->set_flags(dev, data); | |
557 | } | |
558 | ||
559 | /* allow changing only bits set in hw_features */ | |
5f8629c5 | 560 | changed = (data ^ dev->features) & flags_dup_features; |
da8ac86c MM |
561 | if (changed & ~dev->hw_features) |
562 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
563 | ||
564 | dev->wanted_features = | |
5f8629c5 | 565 | (dev->wanted_features & ~changed) | (data & dev->hw_features); |
da8ac86c | 566 | |
6cb6a27c | 567 | __netdev_update_features(dev); |
da8ac86c MM |
568 | |
569 | return 0; | |
570 | } | |
571 | ||
4bc71cb9 | 572 | int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
1da177e4 | 573 | { |
4bc71cb9 | 574 | ASSERT_RTNL(); |
1da177e4 | 575 | |
4bc71cb9 | 576 | if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings) |
1da177e4 LT |
577 | return -EOPNOTSUPP; |
578 | ||
4bc71cb9 JP |
579 | memset(cmd, 0, sizeof(struct ethtool_cmd)); |
580 | cmd->cmd = ETHTOOL_GSET; | |
581 | return dev->ethtool_ops->get_settings(dev, cmd); | |
582 | } | |
583 | EXPORT_SYMBOL(__ethtool_get_settings); | |
584 | ||
585 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) | |
586 | { | |
587 | int err; | |
588 | struct ethtool_cmd cmd; | |
589 | ||
590 | err = __ethtool_get_settings(dev, &cmd); | |
1da177e4 LT |
591 | if (err < 0) |
592 | return err; | |
593 | ||
594 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
595 | return -EFAULT; | |
596 | return 0; | |
597 | } | |
598 | ||
599 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) | |
600 | { | |
601 | struct ethtool_cmd cmd; | |
602 | ||
603 | if (!dev->ethtool_ops->set_settings) | |
604 | return -EOPNOTSUPP; | |
605 | ||
606 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
607 | return -EFAULT; | |
608 | ||
609 | return dev->ethtool_ops->set_settings(dev, &cmd); | |
610 | } | |
611 | ||
97f8aefb | 612 | static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev, |
613 | void __user *useraddr) | |
1da177e4 LT |
614 | { |
615 | struct ethtool_drvinfo info; | |
76fd8593 | 616 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 617 | |
1da177e4 LT |
618 | memset(&info, 0, sizeof(info)); |
619 | info.cmd = ETHTOOL_GDRVINFO; | |
01414802 BH |
620 | if (ops && ops->get_drvinfo) { |
621 | ops->get_drvinfo(dev, &info); | |
622 | } else if (dev->dev.parent && dev->dev.parent->driver) { | |
623 | strlcpy(info.bus_info, dev_name(dev->dev.parent), | |
624 | sizeof(info.bus_info)); | |
625 | strlcpy(info.driver, dev->dev.parent->driver->name, | |
626 | sizeof(info.driver)); | |
627 | } else { | |
628 | return -EOPNOTSUPP; | |
629 | } | |
1da177e4 | 630 | |
723b2f57 JG |
631 | /* |
632 | * this method of obtaining string set info is deprecated; | |
d17792eb | 633 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 634 | */ |
01414802 | 635 | if (ops && ops->get_sset_count) { |
ff03d49f JG |
636 | int rc; |
637 | ||
638 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
639 | if (rc >= 0) | |
640 | info.testinfo_len = rc; | |
641 | rc = ops->get_sset_count(dev, ETH_SS_STATS); | |
642 | if (rc >= 0) | |
643 | info.n_stats = rc; | |
339bf024 JG |
644 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
645 | if (rc >= 0) | |
646 | info.n_priv_flags = rc; | |
ff03d49f | 647 | } |
01414802 | 648 | if (ops && ops->get_regs_len) |
1da177e4 | 649 | info.regdump_len = ops->get_regs_len(dev); |
01414802 | 650 | if (ops && ops->get_eeprom_len) |
1da177e4 LT |
651 | info.eedump_len = ops->get_eeprom_len(dev); |
652 | ||
653 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
654 | return -EFAULT; | |
655 | return 0; | |
656 | } | |
657 | ||
f5c445ed | 658 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 659 | void __user *useraddr) |
723b2f57 JG |
660 | { |
661 | struct ethtool_sset_info info; | |
723b2f57 JG |
662 | u64 sset_mask; |
663 | int i, idx = 0, n_bits = 0, ret, rc; | |
664 | u32 *info_buf = NULL; | |
665 | ||
723b2f57 JG |
666 | if (copy_from_user(&info, useraddr, sizeof(info))) |
667 | return -EFAULT; | |
668 | ||
669 | /* store copy of mask, because we zero struct later on */ | |
670 | sset_mask = info.sset_mask; | |
671 | if (!sset_mask) | |
672 | return 0; | |
673 | ||
674 | /* calculate size of return buffer */ | |
d17792eb | 675 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
676 | |
677 | memset(&info, 0, sizeof(info)); | |
678 | info.cmd = ETHTOOL_GSSET_INFO; | |
679 | ||
680 | info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER); | |
681 | if (!info_buf) | |
682 | return -ENOMEM; | |
683 | ||
684 | /* | |
685 | * fill return buffer based on input bitmask and successful | |
686 | * get_sset_count return | |
687 | */ | |
688 | for (i = 0; i < 64; i++) { | |
689 | if (!(sset_mask & (1ULL << i))) | |
690 | continue; | |
691 | ||
340ae165 | 692 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
693 | if (rc >= 0) { |
694 | info.sset_mask |= (1ULL << i); | |
695 | info_buf[idx++] = rc; | |
696 | } | |
697 | } | |
698 | ||
699 | ret = -EFAULT; | |
700 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
701 | goto out; | |
702 | ||
703 | useraddr += offsetof(struct ethtool_sset_info, data); | |
704 | if (copy_to_user(useraddr, info_buf, idx * sizeof(u32))) | |
705 | goto out; | |
706 | ||
707 | ret = 0; | |
708 | ||
709 | out: | |
710 | kfree(info_buf); | |
711 | return ret; | |
712 | } | |
713 | ||
97f8aefb | 714 | static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
bf988435 | 715 | u32 cmd, void __user *useraddr) |
0853ad66 | 716 | { |
bf988435 BH |
717 | struct ethtool_rxnfc info; |
718 | size_t info_size = sizeof(info); | |
0853ad66 | 719 | |
59089d8d | 720 | if (!dev->ethtool_ops->set_rxnfc) |
0853ad66 SB |
721 | return -EOPNOTSUPP; |
722 | ||
bf988435 BH |
723 | /* struct ethtool_rxnfc was originally defined for |
724 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
725 | * members. User-space might still be using that | |
726 | * definition. */ | |
727 | if (cmd == ETHTOOL_SRXFH) | |
728 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
729 | sizeof(info.data)); | |
730 | ||
731 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
732 | return -EFAULT; |
733 | ||
bf988435 | 734 | return dev->ethtool_ops->set_rxnfc(dev, &info); |
0853ad66 SB |
735 | } |
736 | ||
97f8aefb | 737 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 738 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
739 | { |
740 | struct ethtool_rxnfc info; | |
bf988435 | 741 | size_t info_size = sizeof(info); |
59089d8d SB |
742 | const struct ethtool_ops *ops = dev->ethtool_ops; |
743 | int ret; | |
744 | void *rule_buf = NULL; | |
0853ad66 | 745 | |
59089d8d | 746 | if (!ops->get_rxnfc) |
0853ad66 SB |
747 | return -EOPNOTSUPP; |
748 | ||
bf988435 BH |
749 | /* struct ethtool_rxnfc was originally defined for |
750 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
751 | * members. User-space might still be using that | |
752 | * definition. */ | |
753 | if (cmd == ETHTOOL_GRXFH) | |
754 | info_size = (offsetof(struct ethtool_rxnfc, data) + | |
755 | sizeof(info.data)); | |
756 | ||
757 | if (copy_from_user(&info, useraddr, info_size)) | |
0853ad66 SB |
758 | return -EFAULT; |
759 | ||
59089d8d SB |
760 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
761 | if (info.rule_cnt > 0) { | |
db048b69 | 762 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
ae6df5f9 | 763 | rule_buf = kzalloc(info.rule_cnt * sizeof(u32), |
db048b69 | 764 | GFP_USER); |
59089d8d SB |
765 | if (!rule_buf) |
766 | return -ENOMEM; | |
767 | } | |
768 | } | |
0853ad66 | 769 | |
59089d8d SB |
770 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
771 | if (ret < 0) | |
772 | goto err_out; | |
773 | ||
774 | ret = -EFAULT; | |
bf988435 | 775 | if (copy_to_user(useraddr, &info, info_size)) |
59089d8d SB |
776 | goto err_out; |
777 | ||
778 | if (rule_buf) { | |
779 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); | |
780 | if (copy_to_user(useraddr, rule_buf, | |
781 | info.rule_cnt * sizeof(u32))) | |
782 | goto err_out; | |
783 | } | |
784 | ret = 0; | |
785 | ||
786 | err_out: | |
c9caceca | 787 | kfree(rule_buf); |
59089d8d SB |
788 | |
789 | return ret; | |
0853ad66 SB |
790 | } |
791 | ||
a5b6ee29 BH |
792 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
793 | void __user *useraddr) | |
794 | { | |
795 | struct ethtool_rxfh_indir *indir; | |
796 | u32 table_size; | |
797 | size_t full_size; | |
798 | int ret; | |
799 | ||
800 | if (!dev->ethtool_ops->get_rxfh_indir) | |
801 | return -EOPNOTSUPP; | |
802 | ||
803 | if (copy_from_user(&table_size, | |
804 | useraddr + offsetof(struct ethtool_rxfh_indir, size), | |
805 | sizeof(table_size))) | |
806 | return -EFAULT; | |
807 | ||
808 | if (table_size > | |
809 | (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index)) | |
810 | return -ENOMEM; | |
811 | full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size; | |
b00916b1 | 812 | indir = kzalloc(full_size, GFP_USER); |
a5b6ee29 BH |
813 | if (!indir) |
814 | return -ENOMEM; | |
815 | ||
816 | indir->cmd = ETHTOOL_GRXFHINDIR; | |
817 | indir->size = table_size; | |
818 | ret = dev->ethtool_ops->get_rxfh_indir(dev, indir); | |
819 | if (ret) | |
820 | goto out; | |
821 | ||
822 | if (copy_to_user(useraddr, indir, full_size)) | |
823 | ret = -EFAULT; | |
824 | ||
825 | out: | |
826 | kfree(indir); | |
827 | return ret; | |
828 | } | |
829 | ||
830 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
831 | void __user *useraddr) | |
832 | { | |
833 | struct ethtool_rxfh_indir *indir; | |
834 | u32 table_size; | |
835 | size_t full_size; | |
836 | int ret; | |
837 | ||
838 | if (!dev->ethtool_ops->set_rxfh_indir) | |
839 | return -EOPNOTSUPP; | |
840 | ||
841 | if (copy_from_user(&table_size, | |
842 | useraddr + offsetof(struct ethtool_rxfh_indir, size), | |
843 | sizeof(table_size))) | |
844 | return -EFAULT; | |
845 | ||
846 | if (table_size > | |
847 | (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index)) | |
848 | return -ENOMEM; | |
849 | full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size; | |
850 | indir = kmalloc(full_size, GFP_USER); | |
851 | if (!indir) | |
852 | return -ENOMEM; | |
853 | ||
854 | if (copy_from_user(indir, useraddr, full_size)) { | |
855 | ret = -EFAULT; | |
856 | goto out; | |
857 | } | |
858 | ||
859 | ret = dev->ethtool_ops->set_rxfh_indir(dev, indir); | |
860 | ||
861 | out: | |
862 | kfree(indir); | |
863 | return ret; | |
864 | } | |
865 | ||
be2902da BH |
866 | /* |
867 | * ethtool does not (or did not) set masks for flow parameters that are | |
868 | * not specified, so if both value and mask are 0 then this must be | |
869 | * treated as equivalent to a mask with all bits set. Implement that | |
870 | * here rather than in drivers. | |
871 | */ | |
872 | static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs) | |
873 | { | |
874 | struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec; | |
875 | struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec; | |
876 | ||
877 | if (fs->flow_type != TCP_V4_FLOW && | |
878 | fs->flow_type != UDP_V4_FLOW && | |
879 | fs->flow_type != SCTP_V4_FLOW) | |
880 | return; | |
881 | ||
882 | if (!(entry->ip4src | mask->ip4src)) | |
883 | mask->ip4src = htonl(0xffffffff); | |
884 | if (!(entry->ip4dst | mask->ip4dst)) | |
885 | mask->ip4dst = htonl(0xffffffff); | |
886 | if (!(entry->psrc | mask->psrc)) | |
887 | mask->psrc = htons(0xffff); | |
888 | if (!(entry->pdst | mask->pdst)) | |
889 | mask->pdst = htons(0xffff); | |
890 | if (!(entry->tos | mask->tos)) | |
891 | mask->tos = 0xff; | |
892 | if (!(fs->vlan_tag | fs->vlan_tag_mask)) | |
893 | fs->vlan_tag_mask = 0xffff; | |
894 | if (!(fs->data | fs->data_mask)) | |
895 | fs->data_mask = 0xffffffffffffffffULL; | |
896 | } | |
897 | ||
97f8aefb | 898 | static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev, |
899 | void __user *useraddr) | |
15682bc4 PWJ |
900 | { |
901 | struct ethtool_rx_ntuple cmd; | |
902 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
15682bc4 | 903 | |
5d9f11cf AD |
904 | if (!ops->set_rx_ntuple) |
905 | return -EOPNOTSUPP; | |
906 | ||
15682bc4 PWJ |
907 | if (!(dev->features & NETIF_F_NTUPLE)) |
908 | return -EINVAL; | |
909 | ||
910 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
911 | return -EFAULT; | |
912 | ||
be2902da BH |
913 | rx_ntuple_fix_masks(&cmd.fs); |
914 | ||
bff55273 | 915 | return ops->set_rx_ntuple(dev, &cmd); |
15682bc4 PWJ |
916 | } |
917 | ||
1da177e4 LT |
918 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
919 | { | |
920 | struct ethtool_regs regs; | |
76fd8593 | 921 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
922 | void *regbuf; |
923 | int reglen, ret; | |
924 | ||
925 | if (!ops->get_regs || !ops->get_regs_len) | |
926 | return -EOPNOTSUPP; | |
927 | ||
928 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
929 | return -EFAULT; | |
930 | ||
931 | reglen = ops->get_regs_len(dev); | |
932 | if (regs.len > reglen) | |
933 | regs.len = reglen; | |
934 | ||
b7c7d01a | 935 | regbuf = vzalloc(reglen); |
67ae7cf1 | 936 | if (reglen && !regbuf) |
1da177e4 LT |
937 | return -ENOMEM; |
938 | ||
939 | ops->get_regs(dev, ®s, regbuf); | |
940 | ||
941 | ret = -EFAULT; | |
942 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
943 | goto out; | |
944 | useraddr += offsetof(struct ethtool_regs, data); | |
67ae7cf1 | 945 | if (regbuf && copy_to_user(useraddr, regbuf, regs.len)) |
1da177e4 LT |
946 | goto out; |
947 | ret = 0; | |
948 | ||
949 | out: | |
a77f5db3 | 950 | vfree(regbuf); |
1da177e4 LT |
951 | return ret; |
952 | } | |
953 | ||
d73d3a8c BH |
954 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
955 | { | |
956 | struct ethtool_value reset; | |
957 | int ret; | |
958 | ||
959 | if (!dev->ethtool_ops->reset) | |
960 | return -EOPNOTSUPP; | |
961 | ||
962 | if (copy_from_user(&reset, useraddr, sizeof(reset))) | |
963 | return -EFAULT; | |
964 | ||
965 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
966 | if (ret) | |
967 | return ret; | |
968 | ||
969 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
970 | return -EFAULT; | |
971 | return 0; | |
972 | } | |
973 | ||
1da177e4 LT |
974 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
975 | { | |
8e557421 | 976 | struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; |
1da177e4 LT |
977 | |
978 | if (!dev->ethtool_ops->get_wol) | |
979 | return -EOPNOTSUPP; | |
980 | ||
981 | dev->ethtool_ops->get_wol(dev, &wol); | |
982 | ||
983 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
984 | return -EFAULT; | |
985 | return 0; | |
986 | } | |
987 | ||
988 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
989 | { | |
990 | struct ethtool_wolinfo wol; | |
991 | ||
992 | if (!dev->ethtool_ops->set_wol) | |
993 | return -EOPNOTSUPP; | |
994 | ||
995 | if (copy_from_user(&wol, useraddr, sizeof(wol))) | |
996 | return -EFAULT; | |
997 | ||
998 | return dev->ethtool_ops->set_wol(dev, &wol); | |
999 | } | |
1000 | ||
1da177e4 LT |
1001 | static int ethtool_nway_reset(struct net_device *dev) |
1002 | { | |
1003 | if (!dev->ethtool_ops->nway_reset) | |
1004 | return -EOPNOTSUPP; | |
1005 | ||
1006 | return dev->ethtool_ops->nway_reset(dev); | |
1007 | } | |
1008 | ||
e596e6e4 BH |
1009 | static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
1010 | { | |
1011 | struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; | |
1012 | ||
1013 | if (!dev->ethtool_ops->get_link) | |
1014 | return -EOPNOTSUPP; | |
1015 | ||
1016 | edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev); | |
1017 | ||
1018 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1019 | return -EFAULT; | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1da177e4 LT |
1023 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1024 | { | |
1025 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1026 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1027 | void __user *userbuf = useraddr + sizeof(eeprom); |
1028 | u32 bytes_remaining; | |
1da177e4 | 1029 | u8 *data; |
b131dd5d | 1030 | int ret = 0; |
1da177e4 LT |
1031 | |
1032 | if (!ops->get_eeprom || !ops->get_eeprom_len) | |
1033 | return -EOPNOTSUPP; | |
1034 | ||
1035 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1036 | return -EFAULT; | |
1037 | ||
1038 | /* Check for wrap and zero */ | |
1039 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1040 | return -EINVAL; | |
1041 | ||
1042 | /* Check for exceeding total eeprom len */ | |
1043 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1044 | return -EINVAL; | |
1045 | ||
b131dd5d | 1046 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1047 | if (!data) |
1048 | return -ENOMEM; | |
1049 | ||
b131dd5d MSB |
1050 | bytes_remaining = eeprom.len; |
1051 | while (bytes_remaining > 0) { | |
1052 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1053 | ||
1054 | ret = ops->get_eeprom(dev, &eeprom, data); | |
1055 | if (ret) | |
1056 | break; | |
1057 | if (copy_to_user(userbuf, data, eeprom.len)) { | |
1058 | ret = -EFAULT; | |
1059 | break; | |
1060 | } | |
1061 | userbuf += eeprom.len; | |
1062 | eeprom.offset += eeprom.len; | |
1063 | bytes_remaining -= eeprom.len; | |
1064 | } | |
1da177e4 | 1065 | |
c5835df9 MSB |
1066 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1067 | eeprom.offset -= eeprom.len; | |
1068 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1069 | ret = -EFAULT; | |
1070 | ||
1da177e4 LT |
1071 | kfree(data); |
1072 | return ret; | |
1073 | } | |
1074 | ||
1075 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) | |
1076 | { | |
1077 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1078 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1079 | void __user *userbuf = useraddr + sizeof(eeprom); |
1080 | u32 bytes_remaining; | |
1da177e4 | 1081 | u8 *data; |
b131dd5d | 1082 | int ret = 0; |
1da177e4 LT |
1083 | |
1084 | if (!ops->set_eeprom || !ops->get_eeprom_len) | |
1085 | return -EOPNOTSUPP; | |
1086 | ||
1087 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1088 | return -EFAULT; | |
1089 | ||
1090 | /* Check for wrap and zero */ | |
1091 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1092 | return -EINVAL; | |
1093 | ||
1094 | /* Check for exceeding total eeprom len */ | |
1095 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1096 | return -EINVAL; | |
1097 | ||
b131dd5d | 1098 | data = kmalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1099 | if (!data) |
1100 | return -ENOMEM; | |
1101 | ||
b131dd5d MSB |
1102 | bytes_remaining = eeprom.len; |
1103 | while (bytes_remaining > 0) { | |
1104 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1105 | ||
1106 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1107 | ret = -EFAULT; | |
1108 | break; | |
1109 | } | |
1110 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1111 | if (ret) | |
1112 | break; | |
1113 | userbuf += eeprom.len; | |
1114 | eeprom.offset += eeprom.len; | |
1115 | bytes_remaining -= eeprom.len; | |
1116 | } | |
1da177e4 | 1117 | |
1da177e4 LT |
1118 | kfree(data); |
1119 | return ret; | |
1120 | } | |
1121 | ||
97f8aefb | 1122 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1123 | void __user *useraddr) | |
1da177e4 | 1124 | { |
8e557421 | 1125 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
1da177e4 LT |
1126 | |
1127 | if (!dev->ethtool_ops->get_coalesce) | |
1128 | return -EOPNOTSUPP; | |
1129 | ||
1130 | dev->ethtool_ops->get_coalesce(dev, &coalesce); | |
1131 | ||
1132 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1133 | return -EFAULT; | |
1134 | return 0; | |
1135 | } | |
1136 | ||
97f8aefb | 1137 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
1138 | void __user *useraddr) | |
1da177e4 LT |
1139 | { |
1140 | struct ethtool_coalesce coalesce; | |
1141 | ||
fa04ae5c | 1142 | if (!dev->ethtool_ops->set_coalesce) |
1da177e4 LT |
1143 | return -EOPNOTSUPP; |
1144 | ||
1145 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) | |
1146 | return -EFAULT; | |
1147 | ||
1148 | return dev->ethtool_ops->set_coalesce(dev, &coalesce); | |
1149 | } | |
1150 | ||
1151 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
1152 | { | |
8e557421 | 1153 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
1da177e4 LT |
1154 | |
1155 | if (!dev->ethtool_ops->get_ringparam) | |
1156 | return -EOPNOTSUPP; | |
1157 | ||
1158 | dev->ethtool_ops->get_ringparam(dev, &ringparam); | |
1159 | ||
1160 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
1161 | return -EFAULT; | |
1162 | return 0; | |
1163 | } | |
1164 | ||
1165 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
1166 | { | |
1167 | struct ethtool_ringparam ringparam; | |
1168 | ||
1169 | if (!dev->ethtool_ops->set_ringparam) | |
1170 | return -EOPNOTSUPP; | |
1171 | ||
1172 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
1173 | return -EFAULT; | |
1174 | ||
1175 | return dev->ethtool_ops->set_ringparam(dev, &ringparam); | |
1176 | } | |
1177 | ||
8b5933c3 | 1178 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
1179 | void __user *useraddr) | |
1180 | { | |
1181 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
1182 | ||
1183 | if (!dev->ethtool_ops->get_channels) | |
1184 | return -EOPNOTSUPP; | |
1185 | ||
1186 | dev->ethtool_ops->get_channels(dev, &channels); | |
1187 | ||
1188 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
1189 | return -EFAULT; | |
1190 | return 0; | |
1191 | } | |
1192 | ||
1193 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
1194 | void __user *useraddr) | |
1195 | { | |
1196 | struct ethtool_channels channels; | |
1197 | ||
1198 | if (!dev->ethtool_ops->set_channels) | |
1199 | return -EOPNOTSUPP; | |
1200 | ||
1201 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
1202 | return -EFAULT; | |
1203 | ||
1204 | return dev->ethtool_ops->set_channels(dev, &channels); | |
1205 | } | |
1206 | ||
1da177e4 LT |
1207 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
1208 | { | |
1209 | struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM }; | |
1210 | ||
1211 | if (!dev->ethtool_ops->get_pauseparam) | |
1212 | return -EOPNOTSUPP; | |
1213 | ||
1214 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
1215 | ||
1216 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
1217 | return -EFAULT; | |
1218 | return 0; | |
1219 | } | |
1220 | ||
1221 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
1222 | { | |
1223 | struct ethtool_pauseparam pauseparam; | |
1224 | ||
e1b90c41 | 1225 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
1226 | return -EOPNOTSUPP; |
1227 | ||
1228 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
1229 | return -EFAULT; | |
1230 | ||
1231 | return dev->ethtool_ops->set_pauseparam(dev, &pauseparam); | |
1232 | } | |
1233 | ||
1da177e4 LT |
1234 | static int __ethtool_set_sg(struct net_device *dev, u32 data) |
1235 | { | |
1236 | int err; | |
1237 | ||
5e5069b4 RL |
1238 | if (!dev->ethtool_ops->set_sg) |
1239 | return -EOPNOTSUPP; | |
1240 | ||
0a417704 MM |
1241 | if (data && !(dev->features & NETIF_F_ALL_CSUM)) |
1242 | return -EINVAL; | |
1243 | ||
1da177e4 LT |
1244 | if (!data && dev->ethtool_ops->set_tso) { |
1245 | err = dev->ethtool_ops->set_tso(dev, 0); | |
1246 | if (err) | |
1247 | return err; | |
1248 | } | |
1249 | ||
e89e9cf5 AR |
1250 | if (!data && dev->ethtool_ops->set_ufo) { |
1251 | err = dev->ethtool_ops->set_ufo(dev, 0); | |
1252 | if (err) | |
1253 | return err; | |
1254 | } | |
1da177e4 LT |
1255 | return dev->ethtool_ops->set_sg(dev, data); |
1256 | } | |
1257 | ||
0a417704 | 1258 | static int __ethtool_set_tx_csum(struct net_device *dev, u32 data) |
1da177e4 | 1259 | { |
1da177e4 LT |
1260 | int err; |
1261 | ||
1262 | if (!dev->ethtool_ops->set_tx_csum) | |
1263 | return -EOPNOTSUPP; | |
1264 | ||
0a417704 | 1265 | if (!data && dev->ethtool_ops->set_sg) { |
1da177e4 LT |
1266 | err = __ethtool_set_sg(dev, 0); |
1267 | if (err) | |
1268 | return err; | |
1269 | } | |
1270 | ||
0a417704 | 1271 | return dev->ethtool_ops->set_tx_csum(dev, data); |
1da177e4 LT |
1272 | } |
1273 | ||
e83d360d | 1274 | static int __ethtool_set_rx_csum(struct net_device *dev, u32 data) |
b240a0e5 | 1275 | { |
b240a0e5 HX |
1276 | if (!dev->ethtool_ops->set_rx_csum) |
1277 | return -EOPNOTSUPP; | |
1278 | ||
e83d360d | 1279 | if (!data) |
b240a0e5 HX |
1280 | dev->features &= ~NETIF_F_GRO; |
1281 | ||
e83d360d | 1282 | return dev->ethtool_ops->set_rx_csum(dev, data); |
b240a0e5 HX |
1283 | } |
1284 | ||
0a417704 | 1285 | static int __ethtool_set_tso(struct net_device *dev, u32 data) |
1da177e4 | 1286 | { |
1da177e4 LT |
1287 | if (!dev->ethtool_ops->set_tso) |
1288 | return -EOPNOTSUPP; | |
1289 | ||
0a417704 | 1290 | if (data && !(dev->features & NETIF_F_SG)) |
1da177e4 LT |
1291 | return -EINVAL; |
1292 | ||
0a417704 | 1293 | return dev->ethtool_ops->set_tso(dev, data); |
1da177e4 LT |
1294 | } |
1295 | ||
0a417704 | 1296 | static int __ethtool_set_ufo(struct net_device *dev, u32 data) |
e89e9cf5 | 1297 | { |
e89e9cf5 AR |
1298 | if (!dev->ethtool_ops->set_ufo) |
1299 | return -EOPNOTSUPP; | |
0a417704 | 1300 | if (data && !(dev->features & NETIF_F_SG)) |
e89e9cf5 | 1301 | return -EINVAL; |
0a417704 | 1302 | if (data && !((dev->features & NETIF_F_GEN_CSUM) || |
79032644 MM |
1303 | (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)) |
1304 | == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))) | |
e89e9cf5 | 1305 | return -EINVAL; |
0a417704 | 1306 | return dev->ethtool_ops->set_ufo(dev, data); |
b240a0e5 HX |
1307 | } |
1308 | ||
1da177e4 LT |
1309 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
1310 | { | |
1311 | struct ethtool_test test; | |
76fd8593 | 1312 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1313 | u64 *data; |
ff03d49f | 1314 | int ret, test_len; |
1da177e4 | 1315 | |
a9828ec6 | 1316 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
1317 | return -EOPNOTSUPP; |
1318 | ||
a9828ec6 | 1319 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
1320 | if (test_len < 0) |
1321 | return test_len; | |
1322 | WARN_ON(test_len == 0); | |
1323 | ||
1da177e4 LT |
1324 | if (copy_from_user(&test, useraddr, sizeof(test))) |
1325 | return -EFAULT; | |
1326 | ||
ff03d49f JG |
1327 | test.len = test_len; |
1328 | data = kmalloc(test_len * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1329 | if (!data) |
1330 | return -ENOMEM; | |
1331 | ||
1332 | ops->self_test(dev, &test, data); | |
1333 | ||
1334 | ret = -EFAULT; | |
1335 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
1336 | goto out; | |
1337 | useraddr += sizeof(test); | |
1338 | if (copy_to_user(useraddr, data, test.len * sizeof(u64))) | |
1339 | goto out; | |
1340 | ret = 0; | |
1341 | ||
1342 | out: | |
1343 | kfree(data); | |
1344 | return ret; | |
1345 | } | |
1346 | ||
1347 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
1348 | { | |
1349 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
1350 | u8 *data; |
1351 | int ret; | |
1352 | ||
1da177e4 LT |
1353 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
1354 | return -EFAULT; | |
1355 | ||
340ae165 | 1356 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
1357 | if (ret < 0) |
1358 | return ret; | |
1359 | ||
1360 | gstrings.len = ret; | |
1da177e4 LT |
1361 | |
1362 | data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER); | |
1363 | if (!data) | |
1364 | return -ENOMEM; | |
1365 | ||
340ae165 | 1366 | __ethtool_get_strings(dev, gstrings.string_set, data); |
1da177e4 LT |
1367 | |
1368 | ret = -EFAULT; | |
1369 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
1370 | goto out; | |
1371 | useraddr += sizeof(gstrings); | |
1372 | if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN)) | |
1373 | goto out; | |
1374 | ret = 0; | |
1375 | ||
340ae165 | 1376 | out: |
1da177e4 LT |
1377 | kfree(data); |
1378 | return ret; | |
1379 | } | |
1380 | ||
1381 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) | |
1382 | { | |
1383 | struct ethtool_value id; | |
68f512f2 BH |
1384 | static bool busy; |
1385 | int rc; | |
1da177e4 | 1386 | |
1ab7b6ac | 1387 | if (!dev->ethtool_ops->set_phys_id) |
1da177e4 LT |
1388 | return -EOPNOTSUPP; |
1389 | ||
68f512f2 BH |
1390 | if (busy) |
1391 | return -EBUSY; | |
1392 | ||
1da177e4 LT |
1393 | if (copy_from_user(&id, useraddr, sizeof(id))) |
1394 | return -EFAULT; | |
1395 | ||
68f512f2 | 1396 | rc = dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 1397 | if (rc < 0) |
68f512f2 BH |
1398 | return rc; |
1399 | ||
1400 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
1401 | * removal of the device. | |
1402 | */ | |
1403 | busy = true; | |
1404 | dev_hold(dev); | |
1405 | rtnl_unlock(); | |
1406 | ||
1407 | if (rc == 0) { | |
1408 | /* Driver will handle this itself */ | |
1409 | schedule_timeout_interruptible( | |
143780c6 | 1410 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 1411 | } else { |
fce55922 AB |
1412 | /* Driver expects to be called at twice the frequency in rc */ |
1413 | int n = rc * 2, i, interval = HZ / n; | |
1414 | ||
1415 | /* Count down seconds */ | |
68f512f2 | 1416 | do { |
fce55922 AB |
1417 | /* Count down iterations per second */ |
1418 | i = n; | |
1419 | do { | |
1420 | rtnl_lock(); | |
1421 | rc = dev->ethtool_ops->set_phys_id(dev, | |
1422 | (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); | |
1423 | rtnl_unlock(); | |
1424 | if (rc) | |
1425 | break; | |
1426 | schedule_timeout_interruptible(interval); | |
1427 | } while (!signal_pending(current) && --i != 0); | |
68f512f2 BH |
1428 | } while (!signal_pending(current) && |
1429 | (id.data == 0 || --id.data != 0)); | |
1430 | } | |
1431 | ||
1432 | rtnl_lock(); | |
1433 | dev_put(dev); | |
1434 | busy = false; | |
1435 | ||
1436 | (void)dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); | |
1437 | return rc; | |
1da177e4 LT |
1438 | } |
1439 | ||
1440 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
1441 | { | |
1442 | struct ethtool_stats stats; | |
76fd8593 | 1443 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1444 | u64 *data; |
ff03d49f | 1445 | int ret, n_stats; |
1da177e4 | 1446 | |
a9828ec6 | 1447 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
1448 | return -EOPNOTSUPP; |
1449 | ||
a9828ec6 | 1450 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
1451 | if (n_stats < 0) |
1452 | return n_stats; | |
1453 | WARN_ON(n_stats == 0); | |
1454 | ||
1da177e4 LT |
1455 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
1456 | return -EFAULT; | |
1457 | ||
ff03d49f JG |
1458 | stats.n_stats = n_stats; |
1459 | data = kmalloc(n_stats * sizeof(u64), GFP_USER); | |
1da177e4 LT |
1460 | if (!data) |
1461 | return -ENOMEM; | |
1462 | ||
1463 | ops->get_ethtool_stats(dev, &stats, data); | |
1464 | ||
1465 | ret = -EFAULT; | |
1466 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
1467 | goto out; | |
1468 | useraddr += sizeof(stats); | |
1469 | if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64))) | |
1470 | goto out; | |
1471 | ret = 0; | |
1472 | ||
1473 | out: | |
1474 | kfree(data); | |
1475 | return ret; | |
1476 | } | |
1477 | ||
0bf0519d | 1478 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
1479 | { |
1480 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 1481 | |
313674af | 1482 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
1483 | return -EFAULT; |
1484 | ||
313674af MW |
1485 | if (epaddr.size < dev->addr_len) |
1486 | return -ETOOSMALL; | |
1487 | epaddr.size = dev->addr_len; | |
a6f9a705 | 1488 | |
a6f9a705 | 1489 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 1490 | return -EFAULT; |
a6f9a705 | 1491 | useraddr += sizeof(epaddr); |
313674af MW |
1492 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
1493 | return -EFAULT; | |
1494 | return 0; | |
a6f9a705 JW |
1495 | } |
1496 | ||
13c99b24 JG |
1497 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
1498 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 1499 | { |
8e557421 | 1500 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 1501 | |
13c99b24 | 1502 | if (!actor) |
3ae7c0b2 JG |
1503 | return -EOPNOTSUPP; |
1504 | ||
13c99b24 | 1505 | edata.data = actor(dev); |
3ae7c0b2 JG |
1506 | |
1507 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1508 | return -EFAULT; | |
1509 | return 0; | |
1510 | } | |
1511 | ||
13c99b24 JG |
1512 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
1513 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
1514 | { |
1515 | struct ethtool_value edata; | |
1516 | ||
13c99b24 | 1517 | if (!actor) |
3ae7c0b2 JG |
1518 | return -EOPNOTSUPP; |
1519 | ||
1520 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1521 | return -EFAULT; | |
1522 | ||
13c99b24 | 1523 | actor(dev, edata.data); |
339bf024 JG |
1524 | return 0; |
1525 | } | |
1526 | ||
13c99b24 JG |
1527 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
1528 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
1529 | { |
1530 | struct ethtool_value edata; | |
1531 | ||
13c99b24 | 1532 | if (!actor) |
339bf024 JG |
1533 | return -EOPNOTSUPP; |
1534 | ||
1535 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1536 | return -EFAULT; | |
1537 | ||
13c99b24 | 1538 | return actor(dev, edata.data); |
339bf024 JG |
1539 | } |
1540 | ||
97f8aefb | 1541 | static noinline_for_stack int ethtool_flash_device(struct net_device *dev, |
1542 | char __user *useraddr) | |
05c6a8d7 AK |
1543 | { |
1544 | struct ethtool_flash efl; | |
1545 | ||
1546 | if (copy_from_user(&efl, useraddr, sizeof(efl))) | |
1547 | return -EFAULT; | |
1548 | ||
1549 | if (!dev->ethtool_ops->flash_device) | |
1550 | return -EOPNOTSUPP; | |
1551 | ||
1552 | return dev->ethtool_ops->flash_device(dev, &efl); | |
1553 | } | |
1554 | ||
29dd54b7 AC |
1555 | static int ethtool_set_dump(struct net_device *dev, |
1556 | void __user *useraddr) | |
1557 | { | |
1558 | struct ethtool_dump dump; | |
1559 | ||
1560 | if (!dev->ethtool_ops->set_dump) | |
1561 | return -EOPNOTSUPP; | |
1562 | ||
1563 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
1564 | return -EFAULT; | |
1565 | ||
1566 | return dev->ethtool_ops->set_dump(dev, &dump); | |
1567 | } | |
1568 | ||
1569 | static int ethtool_get_dump_flag(struct net_device *dev, | |
1570 | void __user *useraddr) | |
1571 | { | |
1572 | int ret; | |
1573 | struct ethtool_dump dump; | |
1574 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1575 | ||
1576 | if (!dev->ethtool_ops->get_dump_flag) | |
1577 | return -EOPNOTSUPP; | |
1578 | ||
1579 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
1580 | return -EFAULT; | |
1581 | ||
1582 | ret = ops->get_dump_flag(dev, &dump); | |
1583 | if (ret) | |
1584 | return ret; | |
1585 | ||
1586 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
1587 | return -EFAULT; | |
1588 | return 0; | |
1589 | } | |
1590 | ||
1591 | static int ethtool_get_dump_data(struct net_device *dev, | |
1592 | void __user *useraddr) | |
1593 | { | |
1594 | int ret; | |
1595 | __u32 len; | |
1596 | struct ethtool_dump dump, tmp; | |
1597 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1598 | void *data = NULL; | |
1599 | ||
1600 | if (!dev->ethtool_ops->get_dump_data || | |
1601 | !dev->ethtool_ops->get_dump_flag) | |
1602 | return -EOPNOTSUPP; | |
1603 | ||
1604 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
1605 | return -EFAULT; | |
1606 | ||
1607 | memset(&tmp, 0, sizeof(tmp)); | |
1608 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
1609 | ret = ops->get_dump_flag(dev, &tmp); | |
1610 | if (ret) | |
1611 | return ret; | |
1612 | ||
1613 | len = (tmp.len > dump.len) ? dump.len : tmp.len; | |
1614 | if (!len) | |
1615 | return -EFAULT; | |
1616 | ||
1617 | data = vzalloc(tmp.len); | |
1618 | if (!data) | |
1619 | return -ENOMEM; | |
1620 | ret = ops->get_dump_data(dev, &dump, data); | |
1621 | if (ret) | |
1622 | goto out; | |
1623 | ||
1624 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { | |
1625 | ret = -EFAULT; | |
1626 | goto out; | |
1627 | } | |
1628 | useraddr += offsetof(struct ethtool_dump, data); | |
1629 | if (copy_to_user(useraddr, data, len)) | |
1630 | ret = -EFAULT; | |
1631 | out: | |
1632 | vfree(data); | |
1633 | return ret; | |
1634 | } | |
1635 | ||
1da177e4 LT |
1636 | /* The main entry point in this file. Called from net/core/dev.c */ |
1637 | ||
881d966b | 1638 | int dev_ethtool(struct net *net, struct ifreq *ifr) |
1da177e4 | 1639 | { |
881d966b | 1640 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
1da177e4 LT |
1641 | void __user *useraddr = ifr->ifr_data; |
1642 | u32 ethcmd; | |
1643 | int rc; | |
04ed3e74 | 1644 | u32 old_features; |
1da177e4 | 1645 | |
1da177e4 LT |
1646 | if (!dev || !netif_device_present(dev)) |
1647 | return -ENODEV; | |
1648 | ||
97f8aefb | 1649 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
1da177e4 LT |
1650 | return -EFAULT; |
1651 | ||
01414802 BH |
1652 | if (!dev->ethtool_ops) { |
1653 | /* ETHTOOL_GDRVINFO does not require any driver support. | |
1654 | * It is also unprivileged and does not change anything, | |
1655 | * so we can take a shortcut to it. */ | |
1656 | if (ethcmd == ETHTOOL_GDRVINFO) | |
1657 | return ethtool_get_drvinfo(dev, useraddr); | |
1658 | else | |
1659 | return -EOPNOTSUPP; | |
1660 | } | |
1661 | ||
75f3123c | 1662 | /* Allow some commands to be done by anyone */ |
97f8aefb | 1663 | switch (ethcmd) { |
0fdc100b | 1664 | case ETHTOOL_GSET: |
75f3123c | 1665 | case ETHTOOL_GDRVINFO: |
75f3123c | 1666 | case ETHTOOL_GMSGLVL: |
75f3123c SH |
1667 | case ETHTOOL_GCOALESCE: |
1668 | case ETHTOOL_GRINGPARAM: | |
1669 | case ETHTOOL_GPAUSEPARAM: | |
1670 | case ETHTOOL_GRXCSUM: | |
1671 | case ETHTOOL_GTXCSUM: | |
1672 | case ETHTOOL_GSG: | |
1673 | case ETHTOOL_GSTRINGS: | |
75f3123c SH |
1674 | case ETHTOOL_GTSO: |
1675 | case ETHTOOL_GPERMADDR: | |
1676 | case ETHTOOL_GUFO: | |
1677 | case ETHTOOL_GGSO: | |
1cab819b | 1678 | case ETHTOOL_GGRO: |
339bf024 JG |
1679 | case ETHTOOL_GFLAGS: |
1680 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 1681 | case ETHTOOL_GRXFH: |
59089d8d SB |
1682 | case ETHTOOL_GRXRINGS: |
1683 | case ETHTOOL_GRXCLSRLCNT: | |
1684 | case ETHTOOL_GRXCLSRULE: | |
1685 | case ETHTOOL_GRXCLSRLALL: | |
5455c699 | 1686 | case ETHTOOL_GFEATURES: |
75f3123c SH |
1687 | break; |
1688 | default: | |
1689 | if (!capable(CAP_NET_ADMIN)) | |
1690 | return -EPERM; | |
1691 | } | |
1692 | ||
97f8aefb | 1693 | if (dev->ethtool_ops->begin) { |
1694 | rc = dev->ethtool_ops->begin(dev); | |
1695 | if (rc < 0) | |
1da177e4 | 1696 | return rc; |
97f8aefb | 1697 | } |
d8a33ac4 SH |
1698 | old_features = dev->features; |
1699 | ||
1da177e4 LT |
1700 | switch (ethcmd) { |
1701 | case ETHTOOL_GSET: | |
1702 | rc = ethtool_get_settings(dev, useraddr); | |
1703 | break; | |
1704 | case ETHTOOL_SSET: | |
1705 | rc = ethtool_set_settings(dev, useraddr); | |
1706 | break; | |
1707 | case ETHTOOL_GDRVINFO: | |
1708 | rc = ethtool_get_drvinfo(dev, useraddr); | |
1da177e4 LT |
1709 | break; |
1710 | case ETHTOOL_GREGS: | |
1711 | rc = ethtool_get_regs(dev, useraddr); | |
1712 | break; | |
1713 | case ETHTOOL_GWOL: | |
1714 | rc = ethtool_get_wol(dev, useraddr); | |
1715 | break; | |
1716 | case ETHTOOL_SWOL: | |
1717 | rc = ethtool_set_wol(dev, useraddr); | |
1718 | break; | |
1719 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
1720 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
1721 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
1722 | break; |
1723 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
1724 | rc = ethtool_set_value_void(dev, useraddr, |
1725 | dev->ethtool_ops->set_msglevel); | |
1da177e4 LT |
1726 | break; |
1727 | case ETHTOOL_NWAY_RST: | |
1728 | rc = ethtool_nway_reset(dev); | |
1729 | break; | |
1730 | case ETHTOOL_GLINK: | |
e596e6e4 | 1731 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
1732 | break; |
1733 | case ETHTOOL_GEEPROM: | |
1734 | rc = ethtool_get_eeprom(dev, useraddr); | |
1735 | break; | |
1736 | case ETHTOOL_SEEPROM: | |
1737 | rc = ethtool_set_eeprom(dev, useraddr); | |
1738 | break; | |
1739 | case ETHTOOL_GCOALESCE: | |
1740 | rc = ethtool_get_coalesce(dev, useraddr); | |
1741 | break; | |
1742 | case ETHTOOL_SCOALESCE: | |
1743 | rc = ethtool_set_coalesce(dev, useraddr); | |
1744 | break; | |
1745 | case ETHTOOL_GRINGPARAM: | |
1746 | rc = ethtool_get_ringparam(dev, useraddr); | |
1747 | break; | |
1748 | case ETHTOOL_SRINGPARAM: | |
1749 | rc = ethtool_set_ringparam(dev, useraddr); | |
1750 | break; | |
1751 | case ETHTOOL_GPAUSEPARAM: | |
1752 | rc = ethtool_get_pauseparam(dev, useraddr); | |
1753 | break; | |
1754 | case ETHTOOL_SPAUSEPARAM: | |
1755 | rc = ethtool_set_pauseparam(dev, useraddr); | |
1756 | break; | |
1da177e4 LT |
1757 | case ETHTOOL_TEST: |
1758 | rc = ethtool_self_test(dev, useraddr); | |
1759 | break; | |
1760 | case ETHTOOL_GSTRINGS: | |
1761 | rc = ethtool_get_strings(dev, useraddr); | |
1762 | break; | |
1763 | case ETHTOOL_PHYS_ID: | |
1764 | rc = ethtool_phys_id(dev, useraddr); | |
1765 | break; | |
1766 | case ETHTOOL_GSTATS: | |
1767 | rc = ethtool_get_stats(dev, useraddr); | |
1768 | break; | |
a6f9a705 JW |
1769 | case ETHTOOL_GPERMADDR: |
1770 | rc = ethtool_get_perm_addr(dev, useraddr); | |
1771 | break; | |
3ae7c0b2 | 1772 | case ETHTOOL_GFLAGS: |
13c99b24 | 1773 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
1896e61f SS |
1774 | (dev->ethtool_ops->get_flags ? |
1775 | dev->ethtool_ops->get_flags : | |
1776 | ethtool_op_get_flags)); | |
3ae7c0b2 JG |
1777 | break; |
1778 | case ETHTOOL_SFLAGS: | |
da8ac86c | 1779 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 1780 | break; |
339bf024 | 1781 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
1782 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
1783 | dev->ethtool_ops->get_priv_flags); | |
339bf024 JG |
1784 | break; |
1785 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
1786 | rc = ethtool_set_value(dev, useraddr, |
1787 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 1788 | break; |
0853ad66 | 1789 | case ETHTOOL_GRXFH: |
59089d8d SB |
1790 | case ETHTOOL_GRXRINGS: |
1791 | case ETHTOOL_GRXCLSRLCNT: | |
1792 | case ETHTOOL_GRXCLSRULE: | |
1793 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 1794 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
1795 | break; |
1796 | case ETHTOOL_SRXFH: | |
59089d8d SB |
1797 | case ETHTOOL_SRXCLSRLDEL: |
1798 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 1799 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 1800 | break; |
05c6a8d7 AK |
1801 | case ETHTOOL_FLASHDEV: |
1802 | rc = ethtool_flash_device(dev, useraddr); | |
1803 | break; | |
d73d3a8c BH |
1804 | case ETHTOOL_RESET: |
1805 | rc = ethtool_reset(dev, useraddr); | |
1806 | break; | |
15682bc4 PWJ |
1807 | case ETHTOOL_SRXNTUPLE: |
1808 | rc = ethtool_set_rx_ntuple(dev, useraddr); | |
1809 | break; | |
723b2f57 JG |
1810 | case ETHTOOL_GSSET_INFO: |
1811 | rc = ethtool_get_sset_info(dev, useraddr); | |
1812 | break; | |
a5b6ee29 BH |
1813 | case ETHTOOL_GRXFHINDIR: |
1814 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
1815 | break; | |
1816 | case ETHTOOL_SRXFHINDIR: | |
1817 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
1818 | break; | |
5455c699 MM |
1819 | case ETHTOOL_GFEATURES: |
1820 | rc = ethtool_get_features(dev, useraddr); | |
1821 | break; | |
1822 | case ETHTOOL_SFEATURES: | |
1823 | rc = ethtool_set_features(dev, useraddr); | |
1824 | break; | |
0a417704 | 1825 | case ETHTOOL_GTXCSUM: |
e83d360d | 1826 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
1827 | case ETHTOOL_GSG: |
1828 | case ETHTOOL_GTSO: | |
1829 | case ETHTOOL_GUFO: | |
1830 | case ETHTOOL_GGSO: | |
1831 | case ETHTOOL_GGRO: | |
1832 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
1833 | break; | |
1834 | case ETHTOOL_STXCSUM: | |
e83d360d | 1835 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
1836 | case ETHTOOL_SSG: |
1837 | case ETHTOOL_STSO: | |
1838 | case ETHTOOL_SUFO: | |
1839 | case ETHTOOL_SGSO: | |
1840 | case ETHTOOL_SGRO: | |
1841 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
1842 | break; | |
8b5933c3 | 1843 | case ETHTOOL_GCHANNELS: |
1844 | rc = ethtool_get_channels(dev, useraddr); | |
1845 | break; | |
1846 | case ETHTOOL_SCHANNELS: | |
1847 | rc = ethtool_set_channels(dev, useraddr); | |
1848 | break; | |
29dd54b7 AC |
1849 | case ETHTOOL_SET_DUMP: |
1850 | rc = ethtool_set_dump(dev, useraddr); | |
1851 | break; | |
1852 | case ETHTOOL_GET_DUMP_FLAG: | |
1853 | rc = ethtool_get_dump_flag(dev, useraddr); | |
1854 | break; | |
1855 | case ETHTOOL_GET_DUMP_DATA: | |
1856 | rc = ethtool_get_dump_data(dev, useraddr); | |
1857 | break; | |
1da177e4 | 1858 | default: |
61a44b9c | 1859 | rc = -EOPNOTSUPP; |
1da177e4 | 1860 | } |
4ec93edb | 1861 | |
e71a4783 | 1862 | if (dev->ethtool_ops->complete) |
1da177e4 | 1863 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
1864 | |
1865 | if (old_features != dev->features) | |
1866 | netdev_features_change(dev); | |
1867 | ||
1da177e4 | 1868 | return rc; |
1da177e4 | 1869 | } |