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net: Allow ethtool to set interface in loopback mode.
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / net / core / ethtool.c
CommitLineData
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
33u32 ethtool_op_get_link(struct net_device *dev)
34{
35 return netif_carrier_ok(dev) ? 1 : 0;
36}
97f8aefb 37EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4
LT		 38
39u32 ethtool_op_get_tx_csum(struct net_device *dev)
40{
8648b305 41 return (dev->features & NETIF_F_ALL_CSUM) != 0;
1da177e4 42}
8a729fce 43EXPORT_SYMBOL(ethtool_op_get_tx_csum);
1da177e4
LT		 44
45int 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 54EXPORT_SYMBOL(ethtool_op_set_tx_csum);
1da177e4 55
69f6a0fa
JM		 56int 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 65EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
6460d948
MC		 66
67int 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 76EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
6460d948 77
1da177e4
LT		 78u32 ethtool_op_get_sg(struct net_device *dev)
79{
80 return (dev->features & NETIF_F_SG) != 0;
81}
97f8aefb 82EXPORT_SYMBOL(ethtool_op_get_sg);
1da177e4
LT		 83
84int 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 93EXPORT_SYMBOL(ethtool_op_set_sg);
1da177e4
LT		 94
95u32 ethtool_op_get_tso(struct net_device *dev)
96{
97 return (dev->features & NETIF_F_TSO) != 0;
98}
97f8aefb 99EXPORT_SYMBOL(ethtool_op_get_tso);
1da177e4
LT		 100
101int 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 110EXPORT_SYMBOL(ethtool_op_set_tso);
1da177e4 111
e89e9cf5
AR		 112u32 ethtool_op_get_ufo(struct net_device *dev)
113{
114 return (dev->features & NETIF_F_UFO) != 0;
115}
97f8aefb 116EXPORT_SYMBOL(ethtool_op_get_ufo);
e89e9cf5
AR		 117
118int 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 126EXPORT_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 */
131static 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
135u32 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 144EXPORT_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 */
151bool 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}
159EXPORT_SYMBOL(ethtool_invalid_flags);
160
1437ce39 161int 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 170EXPORT_SYMBOL(ethtool_op_set_flags);
3ae7c0b2 171
15682bc4
PWJ		 172void ethtool_ntuple_flush(struct net_device *dev)
173{
174 struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
175
176 list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
177 list_del(&fsc->list);
178 kfree(fsc);
179 }
180 dev->ethtool_ntuple_list.count = 0;
181}
182EXPORT_SYMBOL(ethtool_ntuple_flush);
183
1da177e4
LT		 184/* Handlers for each ethtool command */
185
5455c699
MM		 186#define ETHTOOL_DEV_FEATURE_WORDS 1
187
4e4db200
MM		 188static void ethtool_get_features_compat(struct net_device *dev,
189 struct ethtool_get_features_block *features)
190{
191 if (!dev->ethtool_ops)
192 return;
193
194 /* getting RX checksum */
195 if (dev->ethtool_ops->get_rx_csum)
196 if (dev->ethtool_ops->get_rx_csum(dev))
197 features[0].active |= NETIF_F_RXCSUM;
39fc0ce5
MM		 198
199 /* mark legacy-changeable features */
200 if (dev->ethtool_ops->set_sg)
201 features[0].available |= NETIF_F_SG;
202 if (dev->ethtool_ops->set_tx_csum)
203 features[0].available |= NETIF_F_ALL_CSUM;
204 if (dev->ethtool_ops->set_tso)
205 features[0].available |= NETIF_F_ALL_TSO;
206 if (dev->ethtool_ops->set_rx_csum)
207 features[0].available |= NETIF_F_RXCSUM;
208 if (dev->ethtool_ops->set_flags)
209 features[0].available |= flags_dup_features;
210}
211
212static int ethtool_set_feature_compat(struct net_device *dev,
213 int (*legacy_set)(struct net_device *, u32),
214 struct ethtool_set_features_block *features, u32 mask)
215{
216 u32 do_set;
217
218 if (!legacy_set)
219 return 0;
220
221 if (!(features[0].valid & mask))
222 return 0;
223
224 features[0].valid &= ~mask;
225
226 do_set = !!(features[0].requested & mask);
227
228 if (legacy_set(dev, do_set) < 0)
229 netdev_info(dev,
230 "Legacy feature change (%s) failed for 0x%08x\n",
231 do_set ? "set" : "clear", mask);
232
233 return 1;
234}
235
236static int ethtool_set_features_compat(struct net_device *dev,
237 struct ethtool_set_features_block *features)
238{
239 int compat;
240
241 if (!dev->ethtool_ops)
242 return 0;
243
244 compat = ethtool_set_feature_compat(dev, dev->ethtool_ops->set_sg,
245 features, NETIF_F_SG);
246 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tx_csum,
247 features, NETIF_F_ALL_CSUM);
248 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tso,
249 features, NETIF_F_ALL_TSO);
250 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum,
251 features, NETIF_F_RXCSUM);
252 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_flags,
253 features, flags_dup_features);
254
255 return compat;
4e4db200
MM		 256}
257
5455c699
MM		 258static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
259{
260 struct ethtool_gfeatures cmd = {
261 .cmd = ETHTOOL_GFEATURES,
262 .size = ETHTOOL_DEV_FEATURE_WORDS,
263 };
264 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS] = {
265 {
266 .available = dev->hw_features,
267 .requested = dev->wanted_features,
268 .active = dev->features,
269 .never_changed = NETIF_F_NEVER_CHANGE,
270 },
271 };
272 u32 __user *sizeaddr;
273 u32 copy_size;
274
4e4db200
MM		 275 ethtool_get_features_compat(dev, features);
276
5455c699
MM		 277 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
278 if (get_user(copy_size, sizeaddr))
279 return -EFAULT;
280
281 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
282 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
283
284 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
285 return -EFAULT;
286 useraddr += sizeof(cmd);
287 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
288 return -EFAULT;
289
290 return 0;
291}
292
293static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
294{
295 struct ethtool_sfeatures cmd;
296 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
297 int ret = 0;
298
299 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
300 return -EFAULT;
301 useraddr += sizeof(cmd);
302
303 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
304 return -EINVAL;
305
306 if (copy_from_user(features, useraddr, sizeof(features)))
307 return -EFAULT;
308
309 if (features[0].valid & ~NETIF_F_ETHTOOL_BITS)
310 return -EINVAL;
311
39fc0ce5
MM		 312 if (ethtool_set_features_compat(dev, features))
313 ret |= ETHTOOL_F_COMPAT;
314
5455c699
MM		 315 if (features[0].valid & ~dev->hw_features) {
316 features[0].valid &= dev->hw_features;
317 ret |= ETHTOOL_F_UNSUPPORTED;
318 }
319
320 dev->wanted_features &= ~features[0].valid;
321 dev->wanted_features |= features[0].valid & features[0].requested;
6cb6a27c 322 __netdev_update_features(dev);
5455c699
MM		 323
324 if ((dev->wanted_features ^ dev->features) & features[0].valid)
325 ret |= ETHTOOL_F_WISH;
326
327 return ret;
328}
329
330static const char netdev_features_strings[ETHTOOL_DEV_FEATURE_WORDS * 32][ETH_GSTRING_LEN] = {
331 /* NETIF_F_SG */ "tx-scatter-gather",
332 /* NETIF_F_IP_CSUM */ "tx-checksum-ipv4",
333 /* NETIF_F_NO_CSUM */ "tx-checksum-unneeded",
334 /* NETIF_F_HW_CSUM */ "tx-checksum-ip-generic",
335 /* NETIF_F_IPV6_CSUM */ "tx_checksum-ipv6",
336 /* NETIF_F_HIGHDMA */ "highdma",
337 /* NETIF_F_FRAGLIST */ "tx-scatter-gather-fraglist",
338 /* NETIF_F_HW_VLAN_TX */ "tx-vlan-hw-insert",
339
340 /* NETIF_F_HW_VLAN_RX */ "rx-vlan-hw-parse",
341 /* NETIF_F_HW_VLAN_FILTER */ "rx-vlan-filter",
342 /* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged",
343 /* NETIF_F_GSO */ "tx-generic-segmentation",
344 /* NETIF_F_LLTX */ "tx-lockless",
345 /* NETIF_F_NETNS_LOCAL */ "netns-local",
346 /* NETIF_F_GRO */ "rx-gro",
347 /* NETIF_F_LRO */ "rx-lro",
348
349 /* NETIF_F_TSO */ "tx-tcp-segmentation",
350 /* NETIF_F_UFO */ "tx-udp-fragmentation",
351 /* NETIF_F_GSO_ROBUST */ "tx-gso-robust",
352 /* NETIF_F_TSO_ECN */ "tx-tcp-ecn-segmentation",
353 /* NETIF_F_TSO6 */ "tx-tcp6-segmentation",
354 /* NETIF_F_FSO */ "tx-fcoe-segmentation",
355 "",
356 "",
357
358 /* NETIF_F_FCOE_CRC */ "tx-checksum-fcoe-crc",
359 /* NETIF_F_SCTP_CSUM */ "tx-checksum-sctp",
360 /* NETIF_F_FCOE_MTU */ "fcoe-mtu",
361 /* NETIF_F_NTUPLE */ "rx-ntuple-filter",
362 /* NETIF_F_RXHASH */ "rx-hashing",
e83d360d 363 /* NETIF_F_RXCSUM */ "rx-checksum",
c6e1a0d1 364 /* NETIF_F_NOCACHE_COPY */ "tx-nocache-copy"
eed2a12f 365 /* NETIF_F_LOOPBACK */ "loopback",
5455c699
MM		 366};
367
340ae165
MM		 368static int __ethtool_get_sset_count(struct net_device *dev, int sset)
369{
370 const struct ethtool_ops *ops = dev->ethtool_ops;
371
5455c699
MM		 372 if (sset == ETH_SS_FEATURES)
373 return ARRAY_SIZE(netdev_features_strings);
374
340ae165
MM		 375 if (ops && ops->get_sset_count && ops->get_strings)
376 return ops->get_sset_count(dev, sset);
377 else
378 return -EOPNOTSUPP;
379}
380
381static void __ethtool_get_strings(struct net_device *dev,
382 u32 stringset, u8 *data)
383{
384 const struct ethtool_ops *ops = dev->ethtool_ops;
385
5455c699
MM		 386 if (stringset == ETH_SS_FEATURES)
387 memcpy(data, netdev_features_strings,
388 sizeof(netdev_features_strings));
389 else
390 /* ops->get_strings is valid because checked earlier */
391 ops->get_strings(dev, stringset, data);
340ae165
MM		 392}
393
0a417704
MM		 394static u32 ethtool_get_feature_mask(u32 eth_cmd)
395{
396 /* feature masks of legacy discrete ethtool ops */
397
398 switch (eth_cmd) {
399 case ETHTOOL_GTXCSUM:
400 case ETHTOOL_STXCSUM:
401 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
e83d360d
MM		 402 case ETHTOOL_GRXCSUM:
403 case ETHTOOL_SRXCSUM:
404 return NETIF_F_RXCSUM;
0a417704
MM		 405 case ETHTOOL_GSG:
406 case ETHTOOL_SSG:
407 return NETIF_F_SG;
408 case ETHTOOL_GTSO:
409 case ETHTOOL_STSO:
410 return NETIF_F_ALL_TSO;
411 case ETHTOOL_GUFO:
412 case ETHTOOL_SUFO:
413 return NETIF_F_UFO;
414 case ETHTOOL_GGSO:
415 case ETHTOOL_SGSO:
416 return NETIF_F_GSO;
417 case ETHTOOL_GGRO:
418 case ETHTOOL_SGRO:
419 return NETIF_F_GRO;
420 default:
421 BUG();
422 }
423}
424
425static void *__ethtool_get_one_feature_actor(struct net_device *dev, u32 ethcmd)
426{
427 const struct ethtool_ops *ops = dev->ethtool_ops;
428
429 if (!ops)
430 return NULL;
431
432 switch (ethcmd) {
433 case ETHTOOL_GTXCSUM:
434 return ops->get_tx_csum;
e83d360d
MM		 435 case ETHTOOL_GRXCSUM:
436 return ops->get_rx_csum;
0a417704
MM		 437 case ETHTOOL_SSG:
438 return ops->get_sg;
439 case ETHTOOL_STSO:
440 return ops->get_tso;
441 case ETHTOOL_SUFO:
442 return ops->get_ufo;
443 default:
444 return NULL;
445 }
446}
447
e83d360d
MM		 448static u32 __ethtool_get_rx_csum_oldbug(struct net_device *dev)
449{
450 return !!(dev->features & NETIF_F_ALL_CSUM);
451}
452
0a417704
MM		 453static int ethtool_get_one_feature(struct net_device *dev,
454 char __user *useraddr, u32 ethcmd)
455{
86794881 456 u32 mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 457 struct ethtool_value edata = {
458 .cmd = ethcmd,
86794881 459 .data = !!(dev->features & mask),
0a417704 460 };
0a417704 461
86794881
MM		 462 /* compatibility with discrete get_ ops */
463 if (!(dev->hw_features & mask)) {
464 u32 (*actor)(struct net_device *);
465
466 actor = __ethtool_get_one_feature_actor(dev, ethcmd);
467
e83d360d
MM		 468 /* bug compatibility with old get_rx_csum */
469 if (ethcmd == ETHTOOL_GRXCSUM && !actor)
470 actor = __ethtool_get_rx_csum_oldbug;
471
86794881
MM		 472 if (actor)
473 edata.data = actor(dev);
474 }
0a417704
MM		 475
476 if (copy_to_user(useraddr, &edata, sizeof(edata)))
477 return -EFAULT;
478 return 0;
479}
480
481static int __ethtool_set_tx_csum(struct net_device *dev, u32 data);
e83d360d 482static int __ethtool_set_rx_csum(struct net_device *dev, u32 data);
0a417704
MM		 483static int __ethtool_set_sg(struct net_device *dev, u32 data);
484static int __ethtool_set_tso(struct net_device *dev, u32 data);
485static int __ethtool_set_ufo(struct net_device *dev, u32 data);
486
487static int ethtool_set_one_feature(struct net_device *dev,
488 void __user *useraddr, u32 ethcmd)
489{
490 struct ethtool_value edata;
491 u32 mask;
492
493 if (copy_from_user(&edata, useraddr, sizeof(edata)))
494 return -EFAULT;
495
86794881
MM		 496 mask = ethtool_get_feature_mask(ethcmd);
497 mask &= dev->hw_features;
498 if (mask) {
499 if (edata.data)
500 dev->wanted_features |= mask;
501 else
502 dev->wanted_features &= ~mask;
503
6cb6a27c 504 __netdev_update_features(dev);
86794881
MM		 505 return 0;
506 }
507
508 /* Driver is not converted to ndo_fix_features or does not
509 * support changing this offload. In the latter case it won't
510 * have corresponding ethtool_ops field set.
511 *
512 * Following part is to be removed after all drivers advertise
513 * their changeable features in netdev->hw_features and stop
514 * using discrete offload setting ops.
515 */
516
0a417704
MM		 517 switch (ethcmd) {
518 case ETHTOOL_STXCSUM:
519 return __ethtool_set_tx_csum(dev, edata.data);
e83d360d
MM		 520 case ETHTOOL_SRXCSUM:
521 return __ethtool_set_rx_csum(dev, edata.data);
0a417704
MM		 522 case ETHTOOL_SSG:
523 return __ethtool_set_sg(dev, edata.data);
524 case ETHTOOL_STSO:
525 return __ethtool_set_tso(dev, edata.data);
526 case ETHTOOL_SUFO:
527 return __ethtool_set_ufo(dev, edata.data);
0a417704
MM		 528 default:
529 return -EOPNOTSUPP;
530 }
531}
532
27660515 533int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c
MM		 534{
535 u32 changed;
536
537 if (data & ~flags_dup_features)
538 return -EINVAL;
539
540 /* legacy set_flags() op */
541 if (dev->ethtool_ops->set_flags) {
542 if (unlikely(dev->hw_features & flags_dup_features))
543 netdev_warn(dev,
544 "driver BUG: mixed hw_features and set_flags()\n");
545 return dev->ethtool_ops->set_flags(dev, data);
546 }
547
548 /* allow changing only bits set in hw_features */
5f8629c5 549 changed = (data ^ dev->features) & flags_dup_features;
da8ac86c
MM		 550 if (changed & ~dev->hw_features)
551 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
552
553 dev->wanted_features =
5f8629c5 554 (dev->wanted_features & ~changed) | (data & dev->hw_features);
da8ac86c 555
6cb6a27c 556 __netdev_update_features(dev);
da8ac86c
MM		 557
558 return 0;
559}
560
1da177e4
LT		 561static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
562{
8e557421 563 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
1da177e4
LT		 564 int err;
565
566 if (!dev->ethtool_ops->get_settings)
567 return -EOPNOTSUPP;
568
569 err = dev->ethtool_ops->get_settings(dev, &cmd);
570 if (err < 0)
571 return err;
572
573 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
574 return -EFAULT;
575 return 0;
576}
577
578static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
579{
580 struct ethtool_cmd cmd;
581
582 if (!dev->ethtool_ops->set_settings)
583 return -EOPNOTSUPP;
584
585 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
586 return -EFAULT;
587
588 return dev->ethtool_ops->set_settings(dev, &cmd);
589}
590
97f8aefb 591static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
592 void __user *useraddr)
1da177e4
LT		 593{
594 struct ethtool_drvinfo info;
76fd8593 595 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 596
1da177e4
LT		 597 memset(&info, 0, sizeof(info));
598 info.cmd = ETHTOOL_GDRVINFO;
01414802
BH		 599 if (ops && ops->get_drvinfo) {
600 ops->get_drvinfo(dev, &info);
601 } else if (dev->dev.parent && dev->dev.parent->driver) {
602 strlcpy(info.bus_info, dev_name(dev->dev.parent),
603 sizeof(info.bus_info));
604 strlcpy(info.driver, dev->dev.parent->driver->name,
605 sizeof(info.driver));
606 } else {
607 return -EOPNOTSUPP;
608 }
1da177e4 609
723b2f57
JG		 610 /*
611 * this method of obtaining string set info is deprecated;
d17792eb 612 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 613 */
01414802 614 if (ops && ops->get_sset_count) {
ff03d49f
JG		 615 int rc;
616
617 rc = ops->get_sset_count(dev, ETH_SS_TEST);
618 if (rc >= 0)
619 info.testinfo_len = rc;
620 rc = ops->get_sset_count(dev, ETH_SS_STATS);
621 if (rc >= 0)
622 info.n_stats = rc;
339bf024
JG		 623 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
624 if (rc >= 0)
625 info.n_priv_flags = rc;
ff03d49f 626 }
01414802 627 if (ops && ops->get_regs_len)
1da177e4 628 info.regdump_len = ops->get_regs_len(dev);
01414802 629 if (ops && ops->get_eeprom_len)
1da177e4
LT		 630 info.eedump_len = ops->get_eeprom_len(dev);
631
632 if (copy_to_user(useraddr, &info, sizeof(info)))
633 return -EFAULT;
634 return 0;
635}
636
f5c445ed 637static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 638 void __user *useraddr)
723b2f57
JG		 639{
640 struct ethtool_sset_info info;
723b2f57
JG		 641 u64 sset_mask;
642 int i, idx = 0, n_bits = 0, ret, rc;
643 u32 *info_buf = NULL;
644
723b2f57
JG		 645 if (copy_from_user(&info, useraddr, sizeof(info)))
646 return -EFAULT;
647
648 /* store copy of mask, because we zero struct later on */
649 sset_mask = info.sset_mask;
650 if (!sset_mask)
651 return 0;
652
653 /* calculate size of return buffer */
d17792eb 654 n_bits = hweight64(sset_mask);
723b2f57
JG		 655
656 memset(&info, 0, sizeof(info));
657 info.cmd = ETHTOOL_GSSET_INFO;
658
659 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
660 if (!info_buf)
661 return -ENOMEM;
662
663 /*
664 * fill return buffer based on input bitmask and successful
665 * get_sset_count return
666 */
667 for (i = 0; i < 64; i++) {
668 if (!(sset_mask & (1ULL << i)))
669 continue;
670
340ae165 671 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 672 if (rc >= 0) {
673 info.sset_mask |= (1ULL << i);
674 info_buf[idx++] = rc;
675 }
676 }
677
678 ret = -EFAULT;
679 if (copy_to_user(useraddr, &info, sizeof(info)))
680 goto out;
681
682 useraddr += offsetof(struct ethtool_sset_info, data);
683 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
684 goto out;
685
686 ret = 0;
687
688out:
689 kfree(info_buf);
690 return ret;
691}
692
97f8aefb 693static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 694 u32 cmd, void __user *useraddr)
0853ad66 695{
bf988435
BH		 696 struct ethtool_rxnfc info;
697 size_t info_size = sizeof(info);
0853ad66 698
59089d8d 699 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 700 return -EOPNOTSUPP;
701
bf988435
BH		 702 /* struct ethtool_rxnfc was originally defined for
703 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
704 * members. User-space might still be using that
705 * definition. */
706 if (cmd == ETHTOOL_SRXFH)
707 info_size = (offsetof(struct ethtool_rxnfc, data) +
708 sizeof(info.data));
709
710 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 711 return -EFAULT;
712
bf988435 713 return dev->ethtool_ops->set_rxnfc(dev, &info);
0853ad66
SB		 714}
715
97f8aefb 716static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 717 u32 cmd, void __user *useraddr)
0853ad66
SB		 718{
719 struct ethtool_rxnfc info;
bf988435 720 size_t info_size = sizeof(info);
59089d8d
SB		 721 const struct ethtool_ops *ops = dev->ethtool_ops;
722 int ret;
723 void *rule_buf = NULL;
0853ad66 724
59089d8d 725 if (!ops->get_rxnfc)
0853ad66
SB		 726 return -EOPNOTSUPP;
727
bf988435
BH		 728 /* struct ethtool_rxnfc was originally defined for
729 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
730 * members. User-space might still be using that
731 * definition. */
732 if (cmd == ETHTOOL_GRXFH)
733 info_size = (offsetof(struct ethtool_rxnfc, data) +
734 sizeof(info.data));
735
736 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 737 return -EFAULT;
738
59089d8d
SB		 739 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
740 if (info.rule_cnt > 0) {
db048b69 741 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 742 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 743 GFP_USER);
59089d8d
SB		 744 if (!rule_buf)
745 return -ENOMEM;
746 }
747 }
0853ad66 748
59089d8d
SB		 749 ret = ops->get_rxnfc(dev, &info, rule_buf);
750 if (ret < 0)
751 goto err_out;
752
753 ret = -EFAULT;
bf988435 754 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 755 goto err_out;
756
757 if (rule_buf) {
758 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
759 if (copy_to_user(useraddr, rule_buf,
760 info.rule_cnt * sizeof(u32)))
761 goto err_out;
762 }
763 ret = 0;
764
765err_out:
c9caceca 766 kfree(rule_buf);
59089d8d
SB		 767
768 return ret;
0853ad66
SB		 769}
770
a5b6ee29
BH		 771static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
772 void __user *useraddr)
773{
774 struct ethtool_rxfh_indir *indir;
775 u32 table_size;
776 size_t full_size;
777 int ret;
778
779 if (!dev->ethtool_ops->get_rxfh_indir)
780 return -EOPNOTSUPP;
781
782 if (copy_from_user(&table_size,
783 useraddr + offsetof(struct ethtool_rxfh_indir, size),
784 sizeof(table_size)))
785 return -EFAULT;
786
787 if (table_size >
788 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
789 return -ENOMEM;
790 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
b00916b1 791 indir = kzalloc(full_size, GFP_USER);
a5b6ee29
BH		 792 if (!indir)
793 return -ENOMEM;
794
795 indir->cmd = ETHTOOL_GRXFHINDIR;
796 indir->size = table_size;
797 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
798 if (ret)
799 goto out;
800
801 if (copy_to_user(useraddr, indir, full_size))
802 ret = -EFAULT;
803
804out:
805 kfree(indir);
806 return ret;
807}
808
809static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
810 void __user *useraddr)
811{
812 struct ethtool_rxfh_indir *indir;
813 u32 table_size;
814 size_t full_size;
815 int ret;
816
817 if (!dev->ethtool_ops->set_rxfh_indir)
818 return -EOPNOTSUPP;
819
820 if (copy_from_user(&table_size,
821 useraddr + offsetof(struct ethtool_rxfh_indir, size),
822 sizeof(table_size)))
823 return -EFAULT;
824
825 if (table_size >
826 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
827 return -ENOMEM;
828 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
829 indir = kmalloc(full_size, GFP_USER);
830 if (!indir)
831 return -ENOMEM;
832
833 if (copy_from_user(indir, useraddr, full_size)) {
834 ret = -EFAULT;
835 goto out;
836 }
837
838 ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
839
840out:
841 kfree(indir);
842 return ret;
843}
844
e8589118 845static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
97f8aefb 846 struct ethtool_rx_ntuple_flow_spec *spec,
847 struct ethtool_rx_ntuple_flow_spec_container *fsc)
15682bc4 848{
15682bc4
PWJ		 849
850 /* don't add filters forever */
e8589118
PW		 851 if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
852 /* free the container */
853 kfree(fsc);
854 return;
855 }
15682bc4
PWJ		 856
857 /* Copy the whole filter over */
858 fsc->fs.flow_type = spec->flow_type;
859 memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
860 memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
861
862 fsc->fs.vlan_tag = spec->vlan_tag;
863 fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
864 fsc->fs.data = spec->data;
865 fsc->fs.data_mask = spec->data_mask;
866 fsc->fs.action = spec->action;
867
868 /* add to the list */
869 list_add_tail_rcu(&fsc->list, &list->list);
870 list->count++;
15682bc4
PWJ		 871}
872
be2902da
BH		 873/*
874 * ethtool does not (or did not) set masks for flow parameters that are
875 * not specified, so if both value and mask are 0 then this must be
876 * treated as equivalent to a mask with all bits set. Implement that
877 * here rather than in drivers.
878 */
879static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
880{
881 struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
882 struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
883
884 if (fs->flow_type != TCP_V4_FLOW &&
885 fs->flow_type != UDP_V4_FLOW &&
886 fs->flow_type != SCTP_V4_FLOW)
887 return;
888
889 if (!(entry->ip4src | mask->ip4src))
890 mask->ip4src = htonl(0xffffffff);
891 if (!(entry->ip4dst | mask->ip4dst))
892 mask->ip4dst = htonl(0xffffffff);
893 if (!(entry->psrc | mask->psrc))
894 mask->psrc = htons(0xffff);
895 if (!(entry->pdst | mask->pdst))
896 mask->pdst = htons(0xffff);
897 if (!(entry->tos | mask->tos))
898 mask->tos = 0xff;
899 if (!(fs->vlan_tag | fs->vlan_tag_mask))
900 fs->vlan_tag_mask = 0xffff;
901 if (!(fs->data | fs->data_mask))
902 fs->data_mask = 0xffffffffffffffffULL;
903}
904
97f8aefb 905static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
906 void __user *useraddr)
15682bc4
PWJ		 907{
908 struct ethtool_rx_ntuple cmd;
909 const struct ethtool_ops *ops = dev->ethtool_ops;
e8589118 910 struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
15682bc4
PWJ		 911 int ret;
912
5d9f11cf
AD		 913 if (!ops->set_rx_ntuple)
914 return -EOPNOTSUPP;
915
15682bc4
PWJ		 916 if (!(dev->features & NETIF_F_NTUPLE))
917 return -EINVAL;
918
919 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
920 return -EFAULT;
921
be2902da
BH		 922 rx_ntuple_fix_masks(&cmd.fs);
923
15682bc4
PWJ		 924 /*
925 * Cache filter in dev struct for GET operation only if
926 * the underlying driver doesn't have its own GET operation, and
e8589118
PW		 927 * only if the filter was added successfully. First make sure we
928 * can allocate the filter, then continue if successful.
15682bc4 929 */
e8589118
PW		 930 if (!ops->get_rx_ntuple) {
931 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
932 if (!fsc)
15682bc4 933 return -ENOMEM;
e8589118
PW		 934 }
935
936 ret = ops->set_rx_ntuple(dev, &cmd);
937 if (ret) {
938 kfree(fsc);
939 return ret;
940 }
941
942 if (!ops->get_rx_ntuple)
943 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
15682bc4
PWJ		 944
945 return ret;
946}
947
948static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
949{
950 struct ethtool_gstrings gstrings;
951 const struct ethtool_ops *ops = dev->ethtool_ops;
952 struct ethtool_rx_ntuple_flow_spec_container *fsc;
953 u8 *data;
954 char *p;
955 int ret, i, num_strings = 0;
956
957 if (!ops->get_sset_count)
958 return -EOPNOTSUPP;
959
960 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
961 return -EFAULT;
962
963 ret = ops->get_sset_count(dev, gstrings.string_set);
964 if (ret < 0)
965 return ret;
966
967 gstrings.len = ret;
968
b00916b1 969 data = kzalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
15682bc4
PWJ		 970 if (!data)
971 return -ENOMEM;
972
973 if (ops->get_rx_ntuple) {
974 /* driver-specific filter grab */
975 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
976 goto copy;
977 }
978
979 /* default ethtool filter grab */
980 i = 0;
981 p = (char *)data;
982 list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
983 sprintf(p, "Filter %d:\n", i);
984 p += ETH_GSTRING_LEN;
985 num_strings++;
986
987 switch (fsc->fs.flow_type) {
988 case TCP_V4_FLOW:
989 sprintf(p, "\tFlow Type: TCP\n");
990 p += ETH_GSTRING_LEN;
991 num_strings++;
992 break;
993 case UDP_V4_FLOW:
994 sprintf(p, "\tFlow Type: UDP\n");
995 p += ETH_GSTRING_LEN;
996 num_strings++;
997 break;
998 case SCTP_V4_FLOW:
999 sprintf(p, "\tFlow Type: SCTP\n");
1000 p += ETH_GSTRING_LEN;
1001 num_strings++;
1002 break;
1003 case AH_ESP_V4_FLOW:
1004 sprintf(p, "\tFlow Type: AH ESP\n");
1005 p += ETH_GSTRING_LEN;
1006 num_strings++;
1007 break;
1008 case ESP_V4_FLOW:
1009 sprintf(p, "\tFlow Type: ESP\n");
1010 p += ETH_GSTRING_LEN;
1011 num_strings++;
1012 break;
1013 case IP_USER_FLOW:
1014 sprintf(p, "\tFlow Type: Raw IP\n");
1015 p += ETH_GSTRING_LEN;
1016 num_strings++;
1017 break;
1018 case IPV4_FLOW:
1019 sprintf(p, "\tFlow Type: IPv4\n");
1020 p += ETH_GSTRING_LEN;
1021 num_strings++;
1022 break;
1023 default:
1024 sprintf(p, "\tFlow Type: Unknown\n");
1025 p += ETH_GSTRING_LEN;
1026 num_strings++;
1027 goto unknown_filter;
ccbd6a5a 1028 }
15682bc4
PWJ		 1029
1030 /* now the rest of the filters */
1031 switch (fsc->fs.flow_type) {
1032 case TCP_V4_FLOW:
1033 case UDP_V4_FLOW:
1034 case SCTP_V4_FLOW:
1035 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 1036 fsc->fs.h_u.tcp_ip4_spec.ip4src);
15682bc4
PWJ		 1037 p += ETH_GSTRING_LEN;
1038 num_strings++;
1039 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 1040 fsc->fs.m_u.tcp_ip4_spec.ip4src);
15682bc4
PWJ		 1041 p += ETH_GSTRING_LEN;
1042 num_strings++;
1043 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 1044 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
15682bc4
PWJ		 1045 p += ETH_GSTRING_LEN;
1046 num_strings++;
1047 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 1048 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
15682bc4
PWJ		 1049 p += ETH_GSTRING_LEN;
1050 num_strings++;
1051 sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
97f8aefb 1052 fsc->fs.h_u.tcp_ip4_spec.psrc,
1053 fsc->fs.m_u.tcp_ip4_spec.psrc);
15682bc4
PWJ		 1054 p += ETH_GSTRING_LEN;
1055 num_strings++;
1056 sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
97f8aefb 1057 fsc->fs.h_u.tcp_ip4_spec.pdst,
1058 fsc->fs.m_u.tcp_ip4_spec.pdst);
15682bc4
PWJ		 1059 p += ETH_GSTRING_LEN;
1060 num_strings++;
1061 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 1062 fsc->fs.h_u.tcp_ip4_spec.tos,
1063 fsc->fs.m_u.tcp_ip4_spec.tos);
15682bc4
PWJ		 1064 p += ETH_GSTRING_LEN;
1065 num_strings++;
1066 break;
1067 case AH_ESP_V4_FLOW:
1068 case ESP_V4_FLOW:
1069 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 1070 fsc->fs.h_u.ah_ip4_spec.ip4src);
15682bc4
PWJ		 1071 p += ETH_GSTRING_LEN;
1072 num_strings++;
1073 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 1074 fsc->fs.m_u.ah_ip4_spec.ip4src);
15682bc4
PWJ		 1075 p += ETH_GSTRING_LEN;
1076 num_strings++;
1077 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 1078 fsc->fs.h_u.ah_ip4_spec.ip4dst);
15682bc4
PWJ		 1079 p += ETH_GSTRING_LEN;
1080 num_strings++;
1081 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 1082 fsc->fs.m_u.ah_ip4_spec.ip4dst);
15682bc4
PWJ		 1083 p += ETH_GSTRING_LEN;
1084 num_strings++;
1085 sprintf(p, "\tSPI: %d, mask: 0x%x\n",
97f8aefb 1086 fsc->fs.h_u.ah_ip4_spec.spi,
1087 fsc->fs.m_u.ah_ip4_spec.spi);
15682bc4
PWJ		 1088 p += ETH_GSTRING_LEN;
1089 num_strings++;
1090 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 1091 fsc->fs.h_u.ah_ip4_spec.tos,
1092 fsc->fs.m_u.ah_ip4_spec.tos);
15682bc4
PWJ		 1093 p += ETH_GSTRING_LEN;
1094 num_strings++;
1095 break;
1096 case IP_USER_FLOW:
1097 sprintf(p, "\tSrc IP addr: 0x%x\n",
e0de7c93 1098 fsc->fs.h_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 1099 p += ETH_GSTRING_LEN;
1100 num_strings++;
1101 sprintf(p, "\tSrc IP mask: 0x%x\n",
e0de7c93 1102 fsc->fs.m_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 1103 p += ETH_GSTRING_LEN;
1104 num_strings++;
1105 sprintf(p, "\tDest IP addr: 0x%x\n",
e0de7c93 1106 fsc->fs.h_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 1107 p += ETH_GSTRING_LEN;
1108 num_strings++;
1109 sprintf(p, "\tDest IP mask: 0x%x\n",
e0de7c93 1110 fsc->fs.m_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 1111 p += ETH_GSTRING_LEN;
1112 num_strings++;
1113 break;
1114 case IPV4_FLOW:
1115 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 1116 fsc->fs.h_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 1117 p += ETH_GSTRING_LEN;
1118 num_strings++;
1119 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 1120 fsc->fs.m_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 1121 p += ETH_GSTRING_LEN;
1122 num_strings++;
1123 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 1124 fsc->fs.h_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 1125 p += ETH_GSTRING_LEN;
1126 num_strings++;
1127 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 1128 fsc->fs.m_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 1129 p += ETH_GSTRING_LEN;
1130 num_strings++;
1131 sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
97f8aefb 1132 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
1133 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
15682bc4
PWJ		 1134 p += ETH_GSTRING_LEN;
1135 num_strings++;
1136 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 1137 fsc->fs.h_u.usr_ip4_spec.tos,
1138 fsc->fs.m_u.usr_ip4_spec.tos);
15682bc4
PWJ		 1139 p += ETH_GSTRING_LEN;
1140 num_strings++;
1141 sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
97f8aefb 1142 fsc->fs.h_u.usr_ip4_spec.ip_ver,
1143 fsc->fs.m_u.usr_ip4_spec.ip_ver);
15682bc4
PWJ		 1144 p += ETH_GSTRING_LEN;
1145 num_strings++;
1146 sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
97f8aefb 1147 fsc->fs.h_u.usr_ip4_spec.proto,
1148 fsc->fs.m_u.usr_ip4_spec.proto);
15682bc4
PWJ		 1149 p += ETH_GSTRING_LEN;
1150 num_strings++;
1151 break;
ccbd6a5a 1152 }
15682bc4 1153 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
97f8aefb 1154 fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
15682bc4
PWJ		 1155 p += ETH_GSTRING_LEN;
1156 num_strings++;
1157 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
1158 p += ETH_GSTRING_LEN;
1159 num_strings++;
1160 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
1161 p += ETH_GSTRING_LEN;
1162 num_strings++;
1163 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
1164 sprintf(p, "\tAction: Drop\n");
1165 else
1166 sprintf(p, "\tAction: Direct to queue %d\n",
97f8aefb 1167 fsc->fs.action);
15682bc4
PWJ		 1168 p += ETH_GSTRING_LEN;
1169 num_strings++;
1170unknown_filter:
1171 i++;
1172 }
1173copy:
1174 /* indicate to userspace how many strings we actually have */
1175 gstrings.len = num_strings;
1176 ret = -EFAULT;
1177 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1178 goto out;
1179 useraddr += sizeof(gstrings);
1180 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1181 goto out;
1182 ret = 0;
1183
1184out:
1185 kfree(data);
1186 return ret;
1187}
1188
1da177e4
LT		 1189static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1190{
1191 struct ethtool_regs regs;
76fd8593 1192 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1193 void *regbuf;
1194 int reglen, ret;
1195
1196 if (!ops->get_regs || !ops->get_regs_len)
1197 return -EOPNOTSUPP;
1198
1199 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1200 return -EFAULT;
1201
1202 reglen = ops->get_regs_len(dev);
1203 if (regs.len > reglen)
1204 regs.len = reglen;
1205
b7c7d01a 1206 regbuf = vzalloc(reglen);
1da177e4
LT		 1207 if (!regbuf)
1208 return -ENOMEM;
1209
1210 ops->get_regs(dev, &regs, regbuf);
1211
1212 ret = -EFAULT;
1213 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1214 goto out;
1215 useraddr += offsetof(struct ethtool_regs, data);
1216 if (copy_to_user(useraddr, regbuf, regs.len))
1217 goto out;
1218 ret = 0;
1219
1220 out:
a77f5db3 1221 vfree(regbuf);
1da177e4
LT		 1222 return ret;
1223}
1224
d73d3a8c
BH		 1225static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1226{
1227 struct ethtool_value reset;
1228 int ret;
1229
1230 if (!dev->ethtool_ops->reset)
1231 return -EOPNOTSUPP;
1232
1233 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1234 return -EFAULT;
1235
1236 ret = dev->ethtool_ops->reset(dev, &reset.data);
1237 if (ret)
1238 return ret;
1239
1240 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1241 return -EFAULT;
1242 return 0;
1243}
1244
1da177e4
LT		 1245static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1246{
8e557421 1247 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 1248
1249 if (!dev->ethtool_ops->get_wol)
1250 return -EOPNOTSUPP;
1251
1252 dev->ethtool_ops->get_wol(dev, &wol);
1253
1254 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1255 return -EFAULT;
1256 return 0;
1257}
1258
1259static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1260{
1261 struct ethtool_wolinfo wol;
1262
1263 if (!dev->ethtool_ops->set_wol)
1264 return -EOPNOTSUPP;
1265
1266 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1267 return -EFAULT;
1268
1269 return dev->ethtool_ops->set_wol(dev, &wol);
1270}
1271
1da177e4
LT		 1272static int ethtool_nway_reset(struct net_device *dev)
1273{
1274 if (!dev->ethtool_ops->nway_reset)
1275 return -EOPNOTSUPP;
1276
1277 return dev->ethtool_ops->nway_reset(dev);
1278}
1279
e596e6e4
BH		 1280static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1281{
1282 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1283
1284 if (!dev->ethtool_ops->get_link)
1285 return -EOPNOTSUPP;
1286
1287 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1288
1289 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1290 return -EFAULT;
1291 return 0;
1292}
1293
1da177e4
LT		 1294static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1295{
1296 struct ethtool_eeprom eeprom;
76fd8593 1297 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1298 void __user *userbuf = useraddr + sizeof(eeprom);
1299 u32 bytes_remaining;
1da177e4 1300 u8 *data;
b131dd5d 1301 int ret = 0;
1da177e4
LT		 1302
1303 if (!ops->get_eeprom || !ops->get_eeprom_len)
1304 return -EOPNOTSUPP;
1305
1306 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1307 return -EFAULT;
1308
1309 /* Check for wrap and zero */
1310 if (eeprom.offset + eeprom.len <= eeprom.offset)
1311 return -EINVAL;
1312
1313 /* Check for exceeding total eeprom len */
1314 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1315 return -EINVAL;
1316
b131dd5d 1317 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1318 if (!data)
1319 return -ENOMEM;
1320
b131dd5d
MSB		 1321 bytes_remaining = eeprom.len;
1322 while (bytes_remaining > 0) {
1323 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1324
1325 ret = ops->get_eeprom(dev, &eeprom, data);
1326 if (ret)
1327 break;
1328 if (copy_to_user(userbuf, data, eeprom.len)) {
1329 ret = -EFAULT;
1330 break;
1331 }
1332 userbuf += eeprom.len;
1333 eeprom.offset += eeprom.len;
1334 bytes_remaining -= eeprom.len;
1335 }
1da177e4 1336
c5835df9
MSB		 1337 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1338 eeprom.offset -= eeprom.len;
1339 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1340 ret = -EFAULT;
1341
1da177e4
LT		 1342 kfree(data);
1343 return ret;
1344}
1345
1346static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1347{
1348 struct ethtool_eeprom eeprom;
76fd8593 1349 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1350 void __user *userbuf = useraddr + sizeof(eeprom);
1351 u32 bytes_remaining;
1da177e4 1352 u8 *data;
b131dd5d 1353 int ret = 0;
1da177e4
LT		 1354
1355 if (!ops->set_eeprom || !ops->get_eeprom_len)
1356 return -EOPNOTSUPP;
1357
1358 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1359 return -EFAULT;
1360
1361 /* Check for wrap and zero */
1362 if (eeprom.offset + eeprom.len <= eeprom.offset)
1363 return -EINVAL;
1364
1365 /* Check for exceeding total eeprom len */
1366 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1367 return -EINVAL;
1368
b131dd5d 1369 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1370 if (!data)
1371 return -ENOMEM;
1372
b131dd5d
MSB		 1373 bytes_remaining = eeprom.len;
1374 while (bytes_remaining > 0) {
1375 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1376
1377 if (copy_from_user(data, userbuf, eeprom.len)) {
1378 ret = -EFAULT;
1379 break;
1380 }
1381 ret = ops->set_eeprom(dev, &eeprom, data);
1382 if (ret)
1383 break;
1384 userbuf += eeprom.len;
1385 eeprom.offset += eeprom.len;
1386 bytes_remaining -= eeprom.len;
1387 }
1da177e4 1388
1da177e4
LT		 1389 kfree(data);
1390 return ret;
1391}
1392
97f8aefb 1393static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1394 void __user *useraddr)
1da177e4 1395{
8e557421 1396 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 1397
1398 if (!dev->ethtool_ops->get_coalesce)
1399 return -EOPNOTSUPP;
1400
1401 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1402
1403 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1404 return -EFAULT;
1405 return 0;
1406}
1407
97f8aefb 1408static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1409 void __user *useraddr)
1da177e4
LT		 1410{
1411 struct ethtool_coalesce coalesce;
1412
fa04ae5c 1413 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1414 return -EOPNOTSUPP;
1415
1416 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1417 return -EFAULT;
1418
1419 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1420}
1421
1422static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1423{
8e557421 1424 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1425
1426 if (!dev->ethtool_ops->get_ringparam)
1427 return -EOPNOTSUPP;
1428
1429 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1430
1431 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1432 return -EFAULT;
1433 return 0;
1434}
1435
1436static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1437{
1438 struct ethtool_ringparam ringparam;
1439
1440 if (!dev->ethtool_ops->set_ringparam)
1441 return -EOPNOTSUPP;
1442
1443 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1444 return -EFAULT;
1445
1446 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1447}
1448
8b5933c3 1449static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1450 void __user *useraddr)
1451{
1452 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1453
1454 if (!dev->ethtool_ops->get_channels)
1455 return -EOPNOTSUPP;
1456
1457 dev->ethtool_ops->get_channels(dev, &channels);
1458
1459 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1460 return -EFAULT;
1461 return 0;
1462}
1463
1464static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1465 void __user *useraddr)
1466{
1467 struct ethtool_channels channels;
1468
1469 if (!dev->ethtool_ops->set_channels)
1470 return -EOPNOTSUPP;
1471
1472 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1473 return -EFAULT;
1474
1475 return dev->ethtool_ops->set_channels(dev, &channels);
1476}
1477
1da177e4
LT		 1478static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1479{
1480 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1481
1482 if (!dev->ethtool_ops->get_pauseparam)
1483 return -EOPNOTSUPP;
1484
1485 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1486
1487 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1488 return -EFAULT;
1489 return 0;
1490}
1491
1492static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1493{
1494 struct ethtool_pauseparam pauseparam;
1495
e1b90c41 1496 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1497 return -EOPNOTSUPP;
1498
1499 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1500 return -EFAULT;
1501
1502 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1503}
1504
1da177e4
LT		 1505static int __ethtool_set_sg(struct net_device *dev, u32 data)
1506{
1507 int err;
1508
5e5069b4
RL		 1509 if (!dev->ethtool_ops->set_sg)
1510 return -EOPNOTSUPP;
1511
0a417704
MM		 1512 if (data && !(dev->features & NETIF_F_ALL_CSUM))
1513 return -EINVAL;
1514
1da177e4
LT		 1515 if (!data && dev->ethtool_ops->set_tso) {
1516 err = dev->ethtool_ops->set_tso(dev, 0);
1517 if (err)
1518 return err;
1519 }
1520
e89e9cf5
AR		 1521 if (!data && dev->ethtool_ops->set_ufo) {
1522 err = dev->ethtool_ops->set_ufo(dev, 0);
1523 if (err)
1524 return err;
1525 }
1da177e4
LT		 1526 return dev->ethtool_ops->set_sg(dev, data);
1527}
1528
0a417704 1529static int __ethtool_set_tx_csum(struct net_device *dev, u32 data)
1da177e4 1530{
1da177e4
LT		 1531 int err;
1532
1533 if (!dev->ethtool_ops->set_tx_csum)
1534 return -EOPNOTSUPP;
1535
0a417704 1536 if (!data && dev->ethtool_ops->set_sg) {
1da177e4
LT		 1537 err = __ethtool_set_sg(dev, 0);
1538 if (err)
1539 return err;
1540 }
1541
0a417704 1542 return dev->ethtool_ops->set_tx_csum(dev, data);
1da177e4
LT		 1543}
1544
e83d360d 1545static int __ethtool_set_rx_csum(struct net_device *dev, u32 data)
b240a0e5 1546{
b240a0e5
HX		 1547 if (!dev->ethtool_ops->set_rx_csum)
1548 return -EOPNOTSUPP;
1549
e83d360d 1550 if (!data)
b240a0e5
HX		 1551 dev->features &= ~NETIF_F_GRO;
1552
e83d360d 1553 return dev->ethtool_ops->set_rx_csum(dev, data);
b240a0e5
HX		 1554}
1555
0a417704 1556static int __ethtool_set_tso(struct net_device *dev, u32 data)
1da177e4 1557{
1da177e4
LT		 1558 if (!dev->ethtool_ops->set_tso)
1559 return -EOPNOTSUPP;
1560
0a417704 1561 if (data && !(dev->features & NETIF_F_SG))
1da177e4
LT		 1562 return -EINVAL;
1563
0a417704 1564 return dev->ethtool_ops->set_tso(dev, data);
1da177e4
LT		 1565}
1566
0a417704 1567static int __ethtool_set_ufo(struct net_device *dev, u32 data)
e89e9cf5 1568{
e89e9cf5
AR		 1569 if (!dev->ethtool_ops->set_ufo)
1570 return -EOPNOTSUPP;
0a417704 1571 if (data && !(dev->features & NETIF_F_SG))
e89e9cf5 1572 return -EINVAL;
0a417704 1573 if (data && !((dev->features & NETIF_F_GEN_CSUM) ||
79032644
MM		 1574 (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
1575 == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
e89e9cf5 1576 return -EINVAL;
0a417704 1577 return dev->ethtool_ops->set_ufo(dev, data);
b240a0e5
HX		 1578}
1579
1da177e4
LT		 1580static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1581{
1582 struct ethtool_test test;
76fd8593 1583 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1584 u64 *data;
ff03d49f 1585 int ret, test_len;
1da177e4 1586
a9828ec6 1587 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1588 return -EOPNOTSUPP;
1589
a9828ec6 1590 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1591 if (test_len < 0)
1592 return test_len;
1593 WARN_ON(test_len == 0);
1594
1da177e4
LT		 1595 if (copy_from_user(&test, useraddr, sizeof(test)))
1596 return -EFAULT;
1597
ff03d49f
JG		 1598 test.len = test_len;
1599 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1600 if (!data)
1601 return -ENOMEM;
1602
1603 ops->self_test(dev, &test, data);
1604
1605 ret = -EFAULT;
1606 if (copy_to_user(useraddr, &test, sizeof(test)))
1607 goto out;
1608 useraddr += sizeof(test);
1609 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1610 goto out;
1611 ret = 0;
1612
1613 out:
1614 kfree(data);
1615 return ret;
1616}
1617
1618static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1619{
1620 struct ethtool_gstrings gstrings;
1da177e4
LT		 1621 u8 *data;
1622 int ret;
1623
1da177e4
LT		 1624 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1625 return -EFAULT;
1626
340ae165 1627 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1628 if (ret < 0)
1629 return ret;
1630
1631 gstrings.len = ret;
1da177e4
LT		 1632
1633 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1634 if (!data)
1635 return -ENOMEM;
1636
340ae165 1637 __ethtool_get_strings(dev, gstrings.string_set, data);
1da177e4
LT		 1638
1639 ret = -EFAULT;
1640 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1641 goto out;
1642 useraddr += sizeof(gstrings);
1643 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1644 goto out;
1645 ret = 0;
1646
340ae165 1647out:
1da177e4
LT		 1648 kfree(data);
1649 return ret;
1650}
1651
1652static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1653{
1654 struct ethtool_value id;
68f512f2
BH		 1655 static bool busy;
1656 int rc;
1da177e4 1657
1ab7b6ac 1658 if (!dev->ethtool_ops->set_phys_id)
1da177e4
LT		 1659 return -EOPNOTSUPP;
1660
68f512f2
BH		 1661 if (busy)
1662 return -EBUSY;
1663
1da177e4
LT		 1664 if (copy_from_user(&id, useraddr, sizeof(id)))
1665 return -EFAULT;
1666
68f512f2 1667 rc = dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1668 if (rc < 0)
68f512f2
BH		 1669 return rc;
1670
1671 /* Drop the RTNL lock while waiting, but prevent reentry or
1672 * removal of the device.
1673 */
1674 busy = true;
1675 dev_hold(dev);
1676 rtnl_unlock();
1677
1678 if (rc == 0) {
1679 /* Driver will handle this itself */
1680 schedule_timeout_interruptible(
143780c6 1681 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1682 } else {
fce55922
AB		 1683 /* Driver expects to be called at twice the frequency in rc */
1684 int n = rc * 2, i, interval = HZ / n;
1685
1686 /* Count down seconds */
68f512f2 1687 do {
fce55922
AB		 1688 /* Count down iterations per second */
1689 i = n;
1690 do {
1691 rtnl_lock();
1692 rc = dev->ethtool_ops->set_phys_id(dev,
1693 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1694 rtnl_unlock();
1695 if (rc)
1696 break;
1697 schedule_timeout_interruptible(interval);
1698 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1699 } while (!signal_pending(current) &&
1700 (id.data == 0 || --id.data != 0));
1701 }
1702
1703 rtnl_lock();
1704 dev_put(dev);
1705 busy = false;
1706
1707 (void)dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1708 return rc;
1da177e4
LT		 1709}
1710
1711static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1712{
1713 struct ethtool_stats stats;
76fd8593 1714 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1715 u64 *data;
ff03d49f 1716 int ret, n_stats;
1da177e4 1717
a9828ec6 1718 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1719 return -EOPNOTSUPP;
1720
a9828ec6 1721 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1722 if (n_stats < 0)
1723 return n_stats;
1724 WARN_ON(n_stats == 0);
1725
1da177e4
LT		 1726 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1727 return -EFAULT;
1728
ff03d49f
JG		 1729 stats.n_stats = n_stats;
1730 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1da177e4
LT		 1731 if (!data)
1732 return -ENOMEM;
1733
1734 ops->get_ethtool_stats(dev, &stats, data);
1735
1736 ret = -EFAULT;
1737 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1738 goto out;
1739 useraddr += sizeof(stats);
1740 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1741 goto out;
1742 ret = 0;
1743
1744 out:
1745 kfree(data);
1746 return ret;
1747}
1748
0bf0519d 1749static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1750{
1751 struct ethtool_perm_addr epaddr;
a6f9a705 1752
313674af 1753 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 1754 return -EFAULT;
1755
313674af
MW		 1756 if (epaddr.size < dev->addr_len)
1757 return -ETOOSMALL;
1758 epaddr.size = dev->addr_len;
a6f9a705 1759
a6f9a705 1760 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 1761 return -EFAULT;
a6f9a705 1762 useraddr += sizeof(epaddr);
313674af
MW		 1763 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1764 return -EFAULT;
1765 return 0;
a6f9a705
JW		 1766}
1767
13c99b24
JG		 1768static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1769 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 1770{
8e557421 1771 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 1772
13c99b24 1773 if (!actor)
3ae7c0b2
JG		 1774 return -EOPNOTSUPP;
1775
13c99b24 1776 edata.data = actor(dev);
3ae7c0b2
JG		 1777
1778 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1779 return -EFAULT;
1780 return 0;
1781}
1782
13c99b24
JG		 1783static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1784 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 1785{
1786 struct ethtool_value edata;
1787
13c99b24 1788 if (!actor)
3ae7c0b2
JG		 1789 return -EOPNOTSUPP;
1790
1791 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1792 return -EFAULT;
1793
13c99b24 1794 actor(dev, edata.data);
339bf024
JG		 1795 return 0;
1796}
1797
13c99b24
JG		 1798static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1799 int (*actor)(struct net_device *, u32))
339bf024
JG		 1800{
1801 struct ethtool_value edata;
1802
13c99b24 1803 if (!actor)
339bf024
JG		 1804 return -EOPNOTSUPP;
1805
1806 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1807 return -EFAULT;
1808
13c99b24 1809 return actor(dev, edata.data);
339bf024
JG		 1810}
1811
97f8aefb 1812static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1813 char __user *useraddr)
05c6a8d7
AK		 1814{
1815 struct ethtool_flash efl;
1816
1817 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1818 return -EFAULT;
1819
1820 if (!dev->ethtool_ops->flash_device)
1821 return -EOPNOTSUPP;
1822
1823 return dev->ethtool_ops->flash_device(dev, &efl);
1824}
1825
1da177e4
LT		 1826/* The main entry point in this file. Called from net/core/dev.c */
1827
881d966b 1828int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 1829{
881d966b 1830 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4
LT		 1831 void __user *useraddr = ifr->ifr_data;
1832 u32 ethcmd;
1833 int rc;
04ed3e74 1834 u32 old_features;
1da177e4 1835
1da177e4
LT		 1836 if (!dev || !netif_device_present(dev))
1837 return -ENODEV;
1838
97f8aefb 1839 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 1840 return -EFAULT;
1841
01414802
BH		 1842 if (!dev->ethtool_ops) {
1843 /* ETHTOOL_GDRVINFO does not require any driver support.
1844 * It is also unprivileged and does not change anything,
1845 * so we can take a shortcut to it. */
1846 if (ethcmd == ETHTOOL_GDRVINFO)
1847 return ethtool_get_drvinfo(dev, useraddr);
1848 else
1849 return -EOPNOTSUPP;
1850 }
1851
75f3123c 1852 /* Allow some commands to be done by anyone */
97f8aefb 1853 switch (ethcmd) {
0fdc100b 1854 case ETHTOOL_GSET:
75f3123c 1855 case ETHTOOL_GDRVINFO:
75f3123c 1856 case ETHTOOL_GMSGLVL:
75f3123c
SH		 1857 case ETHTOOL_GCOALESCE:
1858 case ETHTOOL_GRINGPARAM:
1859 case ETHTOOL_GPAUSEPARAM:
1860 case ETHTOOL_GRXCSUM:
1861 case ETHTOOL_GTXCSUM:
1862 case ETHTOOL_GSG:
1863 case ETHTOOL_GSTRINGS:
75f3123c
SH		 1864 case ETHTOOL_GTSO:
1865 case ETHTOOL_GPERMADDR:
1866 case ETHTOOL_GUFO:
1867 case ETHTOOL_GGSO:
1cab819b 1868 case ETHTOOL_GGRO:
339bf024
JG		 1869 case ETHTOOL_GFLAGS:
1870 case ETHTOOL_GPFLAGS:
0853ad66 1871 case ETHTOOL_GRXFH:
59089d8d
SB		 1872 case ETHTOOL_GRXRINGS:
1873 case ETHTOOL_GRXCLSRLCNT:
1874 case ETHTOOL_GRXCLSRULE:
1875 case ETHTOOL_GRXCLSRLALL:
5455c699 1876 case ETHTOOL_GFEATURES:
75f3123c
SH		 1877 break;
1878 default:
1879 if (!capable(CAP_NET_ADMIN))
1880 return -EPERM;
1881 }
1882
97f8aefb 1883 if (dev->ethtool_ops->begin) {
1884 rc = dev->ethtool_ops->begin(dev);
1885 if (rc < 0)
1da177e4 1886 return rc;
97f8aefb 1887 }
d8a33ac4
SH		 1888 old_features = dev->features;
1889
1da177e4
LT		 1890 switch (ethcmd) {
1891 case ETHTOOL_GSET:
1892 rc = ethtool_get_settings(dev, useraddr);
1893 break;
1894 case ETHTOOL_SSET:
1895 rc = ethtool_set_settings(dev, useraddr);
1896 break;
1897 case ETHTOOL_GDRVINFO:
1898 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 1899 break;
1900 case ETHTOOL_GREGS:
1901 rc = ethtool_get_regs(dev, useraddr);
1902 break;
1903 case ETHTOOL_GWOL:
1904 rc = ethtool_get_wol(dev, useraddr);
1905 break;
1906 case ETHTOOL_SWOL:
1907 rc = ethtool_set_wol(dev, useraddr);
1908 break;
1909 case ETHTOOL_GMSGLVL:
13c99b24
JG		 1910 rc = ethtool_get_value(dev, useraddr, ethcmd,
1911 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 1912 break;
1913 case ETHTOOL_SMSGLVL:
13c99b24
JG		 1914 rc = ethtool_set_value_void(dev, useraddr,
1915 dev->ethtool_ops->set_msglevel);
1da177e4
LT		 1916 break;
1917 case ETHTOOL_NWAY_RST:
1918 rc = ethtool_nway_reset(dev);
1919 break;
1920 case ETHTOOL_GLINK:
e596e6e4 1921 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 1922 break;
1923 case ETHTOOL_GEEPROM:
1924 rc = ethtool_get_eeprom(dev, useraddr);
1925 break;
1926 case ETHTOOL_SEEPROM:
1927 rc = ethtool_set_eeprom(dev, useraddr);
1928 break;
1929 case ETHTOOL_GCOALESCE:
1930 rc = ethtool_get_coalesce(dev, useraddr);
1931 break;
1932 case ETHTOOL_SCOALESCE:
1933 rc = ethtool_set_coalesce(dev, useraddr);
1934 break;
1935 case ETHTOOL_GRINGPARAM:
1936 rc = ethtool_get_ringparam(dev, useraddr);
1937 break;
1938 case ETHTOOL_SRINGPARAM:
1939 rc = ethtool_set_ringparam(dev, useraddr);
1940 break;
1941 case ETHTOOL_GPAUSEPARAM:
1942 rc = ethtool_get_pauseparam(dev, useraddr);
1943 break;
1944 case ETHTOOL_SPAUSEPARAM:
1945 rc = ethtool_set_pauseparam(dev, useraddr);
1946 break;
1da177e4
LT		 1947 case ETHTOOL_TEST:
1948 rc = ethtool_self_test(dev, useraddr);
1949 break;
1950 case ETHTOOL_GSTRINGS:
1951 rc = ethtool_get_strings(dev, useraddr);
1952 break;
1953 case ETHTOOL_PHYS_ID:
1954 rc = ethtool_phys_id(dev, useraddr);
1955 break;
1956 case ETHTOOL_GSTATS:
1957 rc = ethtool_get_stats(dev, useraddr);
1958 break;
a6f9a705
JW		 1959 case ETHTOOL_GPERMADDR:
1960 rc = ethtool_get_perm_addr(dev, useraddr);
1961 break;
3ae7c0b2 1962 case ETHTOOL_GFLAGS:
13c99b24 1963 rc = ethtool_get_value(dev, useraddr, ethcmd,
1896e61f
SS		 1964 (dev->ethtool_ops->get_flags ?
1965 dev->ethtool_ops->get_flags :
1966 ethtool_op_get_flags));
3ae7c0b2
JG		 1967 break;
1968 case ETHTOOL_SFLAGS:
da8ac86c 1969 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 1970 break;
339bf024 1971 case ETHTOOL_GPFLAGS:
13c99b24
JG		 1972 rc = ethtool_get_value(dev, useraddr, ethcmd,
1973 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 1974 break;
1975 case ETHTOOL_SPFLAGS:
13c99b24
JG		 1976 rc = ethtool_set_value(dev, useraddr,
1977 dev->ethtool_ops->set_priv_flags);
339bf024 1978 break;
0853ad66 1979 case ETHTOOL_GRXFH:
59089d8d
SB		 1980 case ETHTOOL_GRXRINGS:
1981 case ETHTOOL_GRXCLSRLCNT:
1982 case ETHTOOL_GRXCLSRULE:
1983 case ETHTOOL_GRXCLSRLALL:
bf988435 1984 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 1985 break;
1986 case ETHTOOL_SRXFH:
59089d8d
SB		 1987 case ETHTOOL_SRXCLSRLDEL:
1988 case ETHTOOL_SRXCLSRLINS:
bf988435 1989 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 1990 break;
05c6a8d7
AK		 1991 case ETHTOOL_FLASHDEV:
1992 rc = ethtool_flash_device(dev, useraddr);
1993 break;
d73d3a8c
BH		 1994 case ETHTOOL_RESET:
1995 rc = ethtool_reset(dev, useraddr);
1996 break;
15682bc4
PWJ		 1997 case ETHTOOL_SRXNTUPLE:
1998 rc = ethtool_set_rx_ntuple(dev, useraddr);
1999 break;
2000 case ETHTOOL_GRXNTUPLE:
2001 rc = ethtool_get_rx_ntuple(dev, useraddr);
2002 break;
723b2f57
JG		 2003 case ETHTOOL_GSSET_INFO:
2004 rc = ethtool_get_sset_info(dev, useraddr);
2005 break;
a5b6ee29
BH		 2006 case ETHTOOL_GRXFHINDIR:
2007 rc = ethtool_get_rxfh_indir(dev, useraddr);
2008 break;
2009 case ETHTOOL_SRXFHINDIR:
2010 rc = ethtool_set_rxfh_indir(dev, useraddr);
2011 break;
5455c699
MM		 2012 case ETHTOOL_GFEATURES:
2013 rc = ethtool_get_features(dev, useraddr);
2014 break;
2015 case ETHTOOL_SFEATURES:
2016 rc = ethtool_set_features(dev, useraddr);
2017 break;
0a417704 2018 case ETHTOOL_GTXCSUM:
e83d360d 2019 case ETHTOOL_GRXCSUM:
0a417704
MM		 2020 case ETHTOOL_GSG:
2021 case ETHTOOL_GTSO:
2022 case ETHTOOL_GUFO:
2023 case ETHTOOL_GGSO:
2024 case ETHTOOL_GGRO:
2025 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2026 break;
2027 case ETHTOOL_STXCSUM:
e83d360d 2028 case ETHTOOL_SRXCSUM:
0a417704
MM		 2029 case ETHTOOL_SSG:
2030 case ETHTOOL_STSO:
2031 case ETHTOOL_SUFO:
2032 case ETHTOOL_SGSO:
2033 case ETHTOOL_SGRO:
2034 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2035 break;
8b5933c3 2036 case ETHTOOL_GCHANNELS:
2037 rc = ethtool_get_channels(dev, useraddr);
2038 break;
2039 case ETHTOOL_SCHANNELS:
2040 rc = ethtool_set_channels(dev, useraddr);
2041 break;
1da177e4 2042 default:
61a44b9c 2043 rc = -EOPNOTSUPP;
1da177e4 2044 }
4ec93edb 2045
e71a4783 2046 if (dev->ethtool_ops->complete)
1da177e4 2047 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 2048
2049 if (old_features != dev->features)
2050 netdev_features_change(dev);
2051
1da177e4 2052 return rc;
1da177e4 2053}
kernel source for telekom puls (alcatel/mediatek)