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Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[mirror_ubuntu-artful-kernel.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>
1da177e4 24
4ec93edb 25/*
1da177e4
LT		 26 * Some useful ethtool_ops methods that're device independent.
27 * If we find that all drivers want to do the same thing here,
28 * we can turn these into dev_() function calls.
29 */
30
31u32 ethtool_op_get_link(struct net_device *dev)
32{
33 return netif_carrier_ok(dev) ? 1 : 0;
34}
97f8aefb 35EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 36
1896e61f
SS		 37u32 ethtool_op_get_rx_csum(struct net_device *dev)
38{
39 return (dev->features & NETIF_F_ALL_CSUM) != 0;
40}
8a729fce 41EXPORT_SYMBOL(ethtool_op_get_rx_csum);
1896e61f 42
1da177e4
LT		 43u32 ethtool_op_get_tx_csum(struct net_device *dev)
44{
8648b305 45 return (dev->features & NETIF_F_ALL_CSUM) != 0;
1da177e4 46}
8a729fce 47EXPORT_SYMBOL(ethtool_op_get_tx_csum);
1da177e4
LT		 48
49int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
50{
51 if (data)
52 dev->features |= NETIF_F_IP_CSUM;
53 else
54 dev->features &= ~NETIF_F_IP_CSUM;
55
56 return 0;
57}
58
69f6a0fa
JM		 59int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
60{
61 if (data)
62 dev->features |= NETIF_F_HW_CSUM;
63 else
64 dev->features &= ~NETIF_F_HW_CSUM;
65
66 return 0;
67}
97f8aefb 68EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
6460d948
MC		 69
70int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
71{
72 if (data)
73 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
74 else
75 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
76
77 return 0;
78}
97f8aefb 79EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
6460d948 80
1da177e4
LT		 81u32 ethtool_op_get_sg(struct net_device *dev)
82{
83 return (dev->features & NETIF_F_SG) != 0;
84}
97f8aefb 85EXPORT_SYMBOL(ethtool_op_get_sg);
1da177e4
LT		 86
87int ethtool_op_set_sg(struct net_device *dev, u32 data)
88{
89 if (data)
90 dev->features |= NETIF_F_SG;
91 else
92 dev->features &= ~NETIF_F_SG;
93
94 return 0;
95}
97f8aefb 96EXPORT_SYMBOL(ethtool_op_set_sg);
1da177e4
LT		 97
98u32 ethtool_op_get_tso(struct net_device *dev)
99{
100 return (dev->features & NETIF_F_TSO) != 0;
101}
97f8aefb 102EXPORT_SYMBOL(ethtool_op_get_tso);
1da177e4
LT		 103
104int ethtool_op_set_tso(struct net_device *dev, u32 data)
105{
106 if (data)
107 dev->features |= NETIF_F_TSO;
108 else
109 dev->features &= ~NETIF_F_TSO;
110
111 return 0;
112}
97f8aefb 113EXPORT_SYMBOL(ethtool_op_set_tso);
1da177e4 114
e89e9cf5
AR		 115u32 ethtool_op_get_ufo(struct net_device *dev)
116{
117 return (dev->features & NETIF_F_UFO) != 0;
118}
97f8aefb 119EXPORT_SYMBOL(ethtool_op_get_ufo);
e89e9cf5
AR		 120
121int ethtool_op_set_ufo(struct net_device *dev, u32 data)
122{
123 if (data)
124 dev->features |= NETIF_F_UFO;
125 else
126 dev->features &= ~NETIF_F_UFO;
127 return 0;
128}
97f8aefb 129EXPORT_SYMBOL(ethtool_op_set_ufo);
e89e9cf5 130
3ae7c0b2
JG		 131/* the following list of flags are the same as their associated
132 * NETIF_F_xxx values in include/linux/netdevice.h
133 */
134static const u32 flags_dup_features =
d5dbda23
JG		 135 (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
136 ETH_FLAG_RXHASH);
3ae7c0b2
JG		 137
138u32 ethtool_op_get_flags(struct net_device *dev)
139{
140 /* in the future, this function will probably contain additional
141 * handling for flags which are not so easily handled
142 * by a simple masking operation
143 */
144
145 return dev->features & flags_dup_features;
146}
97f8aefb 147EXPORT_SYMBOL(ethtool_op_get_flags);
3ae7c0b2 148
1437ce39 149int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
3ae7c0b2 150{
1437ce39
BH		 151 if (data & ~supported)
152 return -EINVAL;
0d643e1f 153
1437ce39
BH		 154 dev->features = ((dev->features & ~flags_dup_features) |
155 (data & flags_dup_features));
3ae7c0b2
JG		 156 return 0;
157}
97f8aefb 158EXPORT_SYMBOL(ethtool_op_set_flags);
3ae7c0b2 159
15682bc4
PWJ		 160void ethtool_ntuple_flush(struct net_device *dev)
161{
162 struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
163
164 list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
165 list_del(&fsc->list);
166 kfree(fsc);
167 }
168 dev->ethtool_ntuple_list.count = 0;
169}
170EXPORT_SYMBOL(ethtool_ntuple_flush);
171
1da177e4
LT		 172/* Handlers for each ethtool command */
173
174static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
175{
8e557421 176 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
1da177e4
LT		 177 int err;
178
179 if (!dev->ethtool_ops->get_settings)
180 return -EOPNOTSUPP;
181
182 err = dev->ethtool_ops->get_settings(dev, &cmd);
183 if (err < 0)
184 return err;
185
186 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
187 return -EFAULT;
188 return 0;
189}
190
191static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
192{
193 struct ethtool_cmd cmd;
194
195 if (!dev->ethtool_ops->set_settings)
196 return -EOPNOTSUPP;
197
198 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
199 return -EFAULT;
200
201 return dev->ethtool_ops->set_settings(dev, &cmd);
202}
203
97f8aefb 204static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
205 void __user *useraddr)
1da177e4
LT		 206{
207 struct ethtool_drvinfo info;
76fd8593 208 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 209
1da177e4
LT		 210 memset(&info, 0, sizeof(info));
211 info.cmd = ETHTOOL_GDRVINFO;
01414802
BH		 212 if (ops && ops->get_drvinfo) {
213 ops->get_drvinfo(dev, &info);
214 } else if (dev->dev.parent && dev->dev.parent->driver) {
215 strlcpy(info.bus_info, dev_name(dev->dev.parent),
216 sizeof(info.bus_info));
217 strlcpy(info.driver, dev->dev.parent->driver->name,
218 sizeof(info.driver));
219 } else {
220 return -EOPNOTSUPP;
221 }
1da177e4 222
723b2f57
JG		 223 /*
224 * this method of obtaining string set info is deprecated;
d17792eb 225 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 226 */
01414802 227 if (ops && ops->get_sset_count) {
ff03d49f
JG		 228 int rc;
229
230 rc = ops->get_sset_count(dev, ETH_SS_TEST);
231 if (rc >= 0)
232 info.testinfo_len = rc;
233 rc = ops->get_sset_count(dev, ETH_SS_STATS);
234 if (rc >= 0)
235 info.n_stats = rc;
339bf024
JG		 236 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
237 if (rc >= 0)
238 info.n_priv_flags = rc;
ff03d49f 239 }
01414802 240 if (ops && ops->get_regs_len)
1da177e4 241 info.regdump_len = ops->get_regs_len(dev);
01414802 242 if (ops && ops->get_eeprom_len)
1da177e4
LT		 243 info.eedump_len = ops->get_eeprom_len(dev);
244
245 if (copy_to_user(useraddr, &info, sizeof(info)))
246 return -EFAULT;
247 return 0;
248}
249
f5c445ed 250static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 251 void __user *useraddr)
723b2f57
JG		 252{
253 struct ethtool_sset_info info;
254 const struct ethtool_ops *ops = dev->ethtool_ops;
255 u64 sset_mask;
256 int i, idx = 0, n_bits = 0, ret, rc;
257 u32 *info_buf = NULL;
258
259 if (!ops->get_sset_count)
260 return -EOPNOTSUPP;
261
262 if (copy_from_user(&info, useraddr, sizeof(info)))
263 return -EFAULT;
264
265 /* store copy of mask, because we zero struct later on */
266 sset_mask = info.sset_mask;
267 if (!sset_mask)
268 return 0;
269
270 /* calculate size of return buffer */
d17792eb 271 n_bits = hweight64(sset_mask);
723b2f57
JG		 272
273 memset(&info, 0, sizeof(info));
274 info.cmd = ETHTOOL_GSSET_INFO;
275
276 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
277 if (!info_buf)
278 return -ENOMEM;
279
280 /*
281 * fill return buffer based on input bitmask and successful
282 * get_sset_count return
283 */
284 for (i = 0; i < 64; i++) {
285 if (!(sset_mask & (1ULL << i)))
286 continue;
287
288 rc = ops->get_sset_count(dev, i);
289 if (rc >= 0) {
290 info.sset_mask |= (1ULL << i);
291 info_buf[idx++] = rc;
292 }
293 }
294
295 ret = -EFAULT;
296 if (copy_to_user(useraddr, &info, sizeof(info)))
297 goto out;
298
299 useraddr += offsetof(struct ethtool_sset_info, data);
300 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
301 goto out;
302
303 ret = 0;
304
305out:
306 kfree(info_buf);
307 return ret;
308}
309
97f8aefb 310static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 311 u32 cmd, void __user *useraddr)
0853ad66 312{
bf988435
BH		 313 struct ethtool_rxnfc info;
314 size_t info_size = sizeof(info);
0853ad66 315
59089d8d 316 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 317 return -EOPNOTSUPP;
318
bf988435
BH		 319 /* struct ethtool_rxnfc was originally defined for
320 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
321 * members. User-space might still be using that
322 * definition. */
323 if (cmd == ETHTOOL_SRXFH)
324 info_size = (offsetof(struct ethtool_rxnfc, data) +
325 sizeof(info.data));
326
327 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 328 return -EFAULT;
329
bf988435 330 return dev->ethtool_ops->set_rxnfc(dev, &info);
0853ad66
SB		 331}
332
97f8aefb 333static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 334 u32 cmd, void __user *useraddr)
0853ad66
SB		 335{
336 struct ethtool_rxnfc info;
bf988435 337 size_t info_size = sizeof(info);
59089d8d
SB		 338 const struct ethtool_ops *ops = dev->ethtool_ops;
339 int ret;
340 void *rule_buf = NULL;
0853ad66 341
59089d8d 342 if (!ops->get_rxnfc)
0853ad66
SB		 343 return -EOPNOTSUPP;
344
bf988435
BH		 345 /* struct ethtool_rxnfc was originally defined for
346 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
347 * members. User-space might still be using that
348 * definition. */
349 if (cmd == ETHTOOL_GRXFH)
350 info_size = (offsetof(struct ethtool_rxnfc, data) +
351 sizeof(info.data));
352
353 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 354 return -EFAULT;
355
59089d8d
SB		 356 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
357 if (info.rule_cnt > 0) {
db048b69 358 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 359 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 360 GFP_USER);
59089d8d
SB		 361 if (!rule_buf)
362 return -ENOMEM;
363 }
364 }
0853ad66 365
59089d8d
SB		 366 ret = ops->get_rxnfc(dev, &info, rule_buf);
367 if (ret < 0)
368 goto err_out;
369
370 ret = -EFAULT;
bf988435 371 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 372 goto err_out;
373
374 if (rule_buf) {
375 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
376 if (copy_to_user(useraddr, rule_buf,
377 info.rule_cnt * sizeof(u32)))
378 goto err_out;
379 }
380 ret = 0;
381
382err_out:
c9caceca 383 kfree(rule_buf);
59089d8d
SB		 384
385 return ret;
0853ad66
SB		 386}
387
a5b6ee29
BH		 388static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
389 void __user *useraddr)
390{
391 struct ethtool_rxfh_indir *indir;
392 u32 table_size;
393 size_t full_size;
394 int ret;
395
396 if (!dev->ethtool_ops->get_rxfh_indir)
397 return -EOPNOTSUPP;
398
399 if (copy_from_user(&table_size,
400 useraddr + offsetof(struct ethtool_rxfh_indir, size),
401 sizeof(table_size)))
402 return -EFAULT;
403
404 if (table_size >
405 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
406 return -ENOMEM;
407 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
b00916b1 408 indir = kzalloc(full_size, GFP_USER);
a5b6ee29
BH		 409 if (!indir)
410 return -ENOMEM;
411
412 indir->cmd = ETHTOOL_GRXFHINDIR;
413 indir->size = table_size;
414 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
415 if (ret)
416 goto out;
417
418 if (copy_to_user(useraddr, indir, full_size))
419 ret = -EFAULT;
420
421out:
422 kfree(indir);
423 return ret;
424}
425
426static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
427 void __user *useraddr)
428{
429 struct ethtool_rxfh_indir *indir;
430 u32 table_size;
431 size_t full_size;
432 int ret;
433
434 if (!dev->ethtool_ops->set_rxfh_indir)
435 return -EOPNOTSUPP;
436
437 if (copy_from_user(&table_size,
438 useraddr + offsetof(struct ethtool_rxfh_indir, size),
439 sizeof(table_size)))
440 return -EFAULT;
441
442 if (table_size >
443 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
444 return -ENOMEM;
445 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
446 indir = kmalloc(full_size, GFP_USER);
447 if (!indir)
448 return -ENOMEM;
449
450 if (copy_from_user(indir, useraddr, full_size)) {
451 ret = -EFAULT;
452 goto out;
453 }
454
455 ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
456
457out:
458 kfree(indir);
459 return ret;
460}
461
e8589118 462static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
97f8aefb 463 struct ethtool_rx_ntuple_flow_spec *spec,
464 struct ethtool_rx_ntuple_flow_spec_container *fsc)
15682bc4 465{
15682bc4
PWJ		 466
467 /* don't add filters forever */
e8589118
PW		 468 if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
469 /* free the container */
470 kfree(fsc);
471 return;
472 }
15682bc4
PWJ		 473
474 /* Copy the whole filter over */
475 fsc->fs.flow_type = spec->flow_type;
476 memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
477 memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
478
479 fsc->fs.vlan_tag = spec->vlan_tag;
480 fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
481 fsc->fs.data = spec->data;
482 fsc->fs.data_mask = spec->data_mask;
483 fsc->fs.action = spec->action;
484
485 /* add to the list */
486 list_add_tail_rcu(&fsc->list, &list->list);
487 list->count++;
15682bc4
PWJ		 488}
489
be2902da
BH		 490/*
491 * ethtool does not (or did not) set masks for flow parameters that are
492 * not specified, so if both value and mask are 0 then this must be
493 * treated as equivalent to a mask with all bits set. Implement that
494 * here rather than in drivers.
495 */
496static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
497{
498 struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
499 struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
500
501 if (fs->flow_type != TCP_V4_FLOW &&
502 fs->flow_type != UDP_V4_FLOW &&
503 fs->flow_type != SCTP_V4_FLOW)
504 return;
505
506 if (!(entry->ip4src | mask->ip4src))
507 mask->ip4src = htonl(0xffffffff);
508 if (!(entry->ip4dst | mask->ip4dst))
509 mask->ip4dst = htonl(0xffffffff);
510 if (!(entry->psrc | mask->psrc))
511 mask->psrc = htons(0xffff);
512 if (!(entry->pdst | mask->pdst))
513 mask->pdst = htons(0xffff);
514 if (!(entry->tos | mask->tos))
515 mask->tos = 0xff;
516 if (!(fs->vlan_tag | fs->vlan_tag_mask))
517 fs->vlan_tag_mask = 0xffff;
518 if (!(fs->data | fs->data_mask))
519 fs->data_mask = 0xffffffffffffffffULL;
520}
521
97f8aefb 522static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
523 void __user *useraddr)
15682bc4
PWJ		 524{
525 struct ethtool_rx_ntuple cmd;
526 const struct ethtool_ops *ops = dev->ethtool_ops;
e8589118 527 struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
15682bc4
PWJ		 528 int ret;
529
15682bc4
PWJ		 530 if (!(dev->features & NETIF_F_NTUPLE))
531 return -EINVAL;
532
533 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
534 return -EFAULT;
535
be2902da
BH		 536 rx_ntuple_fix_masks(&cmd.fs);
537
15682bc4
PWJ		 538 /*
539 * Cache filter in dev struct for GET operation only if
540 * the underlying driver doesn't have its own GET operation, and
e8589118
PW		 541 * only if the filter was added successfully. First make sure we
542 * can allocate the filter, then continue if successful.
15682bc4 543 */
e8589118
PW		 544 if (!ops->get_rx_ntuple) {
545 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
546 if (!fsc)
15682bc4 547 return -ENOMEM;
e8589118
PW		 548 }
549
550 ret = ops->set_rx_ntuple(dev, &cmd);
551 if (ret) {
552 kfree(fsc);
553 return ret;
554 }
555
556 if (!ops->get_rx_ntuple)
557 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
15682bc4
PWJ		 558
559 return ret;
560}
561
562static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
563{
564 struct ethtool_gstrings gstrings;
565 const struct ethtool_ops *ops = dev->ethtool_ops;
566 struct ethtool_rx_ntuple_flow_spec_container *fsc;
567 u8 *data;
568 char *p;
569 int ret, i, num_strings = 0;
570
571 if (!ops->get_sset_count)
572 return -EOPNOTSUPP;
573
574 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
575 return -EFAULT;
576
577 ret = ops->get_sset_count(dev, gstrings.string_set);
578 if (ret < 0)
579 return ret;
580
581 gstrings.len = ret;
582
b00916b1 583 data = kzalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
15682bc4
PWJ		 584 if (!data)
585 return -ENOMEM;
586
587 if (ops->get_rx_ntuple) {
588 /* driver-specific filter grab */
589 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
590 goto copy;
591 }
592
593 /* default ethtool filter grab */
594 i = 0;
595 p = (char *)data;
596 list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
597 sprintf(p, "Filter %d:\n", i);
598 p += ETH_GSTRING_LEN;
599 num_strings++;
600
601 switch (fsc->fs.flow_type) {
602 case TCP_V4_FLOW:
603 sprintf(p, "\tFlow Type: TCP\n");
604 p += ETH_GSTRING_LEN;
605 num_strings++;
606 break;
607 case UDP_V4_FLOW:
608 sprintf(p, "\tFlow Type: UDP\n");
609 p += ETH_GSTRING_LEN;
610 num_strings++;
611 break;
612 case SCTP_V4_FLOW:
613 sprintf(p, "\tFlow Type: SCTP\n");
614 p += ETH_GSTRING_LEN;
615 num_strings++;
616 break;
617 case AH_ESP_V4_FLOW:
618 sprintf(p, "\tFlow Type: AH ESP\n");
619 p += ETH_GSTRING_LEN;
620 num_strings++;
621 break;
622 case ESP_V4_FLOW:
623 sprintf(p, "\tFlow Type: ESP\n");
624 p += ETH_GSTRING_LEN;
625 num_strings++;
626 break;
627 case IP_USER_FLOW:
628 sprintf(p, "\tFlow Type: Raw IP\n");
629 p += ETH_GSTRING_LEN;
630 num_strings++;
631 break;
632 case IPV4_FLOW:
633 sprintf(p, "\tFlow Type: IPv4\n");
634 p += ETH_GSTRING_LEN;
635 num_strings++;
636 break;
637 default:
638 sprintf(p, "\tFlow Type: Unknown\n");
639 p += ETH_GSTRING_LEN;
640 num_strings++;
641 goto unknown_filter;
ccbd6a5a 642 }
15682bc4
PWJ		 643
644 /* now the rest of the filters */
645 switch (fsc->fs.flow_type) {
646 case TCP_V4_FLOW:
647 case UDP_V4_FLOW:
648 case SCTP_V4_FLOW:
649 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 650 fsc->fs.h_u.tcp_ip4_spec.ip4src);
15682bc4
PWJ		 651 p += ETH_GSTRING_LEN;
652 num_strings++;
653 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 654 fsc->fs.m_u.tcp_ip4_spec.ip4src);
15682bc4
PWJ		 655 p += ETH_GSTRING_LEN;
656 num_strings++;
657 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 658 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
15682bc4
PWJ		 659 p += ETH_GSTRING_LEN;
660 num_strings++;
661 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 662 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
15682bc4
PWJ		 663 p += ETH_GSTRING_LEN;
664 num_strings++;
665 sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
97f8aefb 666 fsc->fs.h_u.tcp_ip4_spec.psrc,
667 fsc->fs.m_u.tcp_ip4_spec.psrc);
15682bc4
PWJ		 668 p += ETH_GSTRING_LEN;
669 num_strings++;
670 sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
97f8aefb 671 fsc->fs.h_u.tcp_ip4_spec.pdst,
672 fsc->fs.m_u.tcp_ip4_spec.pdst);
15682bc4
PWJ		 673 p += ETH_GSTRING_LEN;
674 num_strings++;
675 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 676 fsc->fs.h_u.tcp_ip4_spec.tos,
677 fsc->fs.m_u.tcp_ip4_spec.tos);
15682bc4
PWJ		 678 p += ETH_GSTRING_LEN;
679 num_strings++;
680 break;
681 case AH_ESP_V4_FLOW:
682 case ESP_V4_FLOW:
683 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 684 fsc->fs.h_u.ah_ip4_spec.ip4src);
15682bc4
PWJ		 685 p += ETH_GSTRING_LEN;
686 num_strings++;
687 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 688 fsc->fs.m_u.ah_ip4_spec.ip4src);
15682bc4
PWJ		 689 p += ETH_GSTRING_LEN;
690 num_strings++;
691 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 692 fsc->fs.h_u.ah_ip4_spec.ip4dst);
15682bc4
PWJ		 693 p += ETH_GSTRING_LEN;
694 num_strings++;
695 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 696 fsc->fs.m_u.ah_ip4_spec.ip4dst);
15682bc4
PWJ		 697 p += ETH_GSTRING_LEN;
698 num_strings++;
699 sprintf(p, "\tSPI: %d, mask: 0x%x\n",
97f8aefb 700 fsc->fs.h_u.ah_ip4_spec.spi,
701 fsc->fs.m_u.ah_ip4_spec.spi);
15682bc4
PWJ		 702 p += ETH_GSTRING_LEN;
703 num_strings++;
704 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 705 fsc->fs.h_u.ah_ip4_spec.tos,
706 fsc->fs.m_u.ah_ip4_spec.tos);
15682bc4
PWJ		 707 p += ETH_GSTRING_LEN;
708 num_strings++;
709 break;
710 case IP_USER_FLOW:
711 sprintf(p, "\tSrc IP addr: 0x%x\n",
e0de7c93 712 fsc->fs.h_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 713 p += ETH_GSTRING_LEN;
714 num_strings++;
715 sprintf(p, "\tSrc IP mask: 0x%x\n",
e0de7c93 716 fsc->fs.m_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 717 p += ETH_GSTRING_LEN;
718 num_strings++;
719 sprintf(p, "\tDest IP addr: 0x%x\n",
e0de7c93 720 fsc->fs.h_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 721 p += ETH_GSTRING_LEN;
722 num_strings++;
723 sprintf(p, "\tDest IP mask: 0x%x\n",
e0de7c93 724 fsc->fs.m_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 725 p += ETH_GSTRING_LEN;
726 num_strings++;
727 break;
728 case IPV4_FLOW:
729 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 730 fsc->fs.h_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 731 p += ETH_GSTRING_LEN;
732 num_strings++;
733 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 734 fsc->fs.m_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 735 p += ETH_GSTRING_LEN;
736 num_strings++;
737 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 738 fsc->fs.h_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 739 p += ETH_GSTRING_LEN;
740 num_strings++;
741 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 742 fsc->fs.m_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 743 p += ETH_GSTRING_LEN;
744 num_strings++;
745 sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
97f8aefb 746 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
747 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
15682bc4
PWJ		 748 p += ETH_GSTRING_LEN;
749 num_strings++;
750 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 751 fsc->fs.h_u.usr_ip4_spec.tos,
752 fsc->fs.m_u.usr_ip4_spec.tos);
15682bc4
PWJ		 753 p += ETH_GSTRING_LEN;
754 num_strings++;
755 sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
97f8aefb 756 fsc->fs.h_u.usr_ip4_spec.ip_ver,
757 fsc->fs.m_u.usr_ip4_spec.ip_ver);
15682bc4
PWJ		 758 p += ETH_GSTRING_LEN;
759 num_strings++;
760 sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
97f8aefb 761 fsc->fs.h_u.usr_ip4_spec.proto,
762 fsc->fs.m_u.usr_ip4_spec.proto);
15682bc4
PWJ		 763 p += ETH_GSTRING_LEN;
764 num_strings++;
765 break;
ccbd6a5a 766 }
15682bc4 767 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
97f8aefb 768 fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
15682bc4
PWJ		 769 p += ETH_GSTRING_LEN;
770 num_strings++;
771 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
772 p += ETH_GSTRING_LEN;
773 num_strings++;
774 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
775 p += ETH_GSTRING_LEN;
776 num_strings++;
777 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
778 sprintf(p, "\tAction: Drop\n");
779 else
780 sprintf(p, "\tAction: Direct to queue %d\n",
97f8aefb 781 fsc->fs.action);
15682bc4
PWJ		 782 p += ETH_GSTRING_LEN;
783 num_strings++;
784unknown_filter:
785 i++;
786 }
787copy:
788 /* indicate to userspace how many strings we actually have */
789 gstrings.len = num_strings;
790 ret = -EFAULT;
791 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
792 goto out;
793 useraddr += sizeof(gstrings);
794 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
795 goto out;
796 ret = 0;
797
798out:
799 kfree(data);
800 return ret;
801}
802
1da177e4
LT		 803static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
804{
805 struct ethtool_regs regs;
76fd8593 806 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 807 void *regbuf;
808 int reglen, ret;
809
810 if (!ops->get_regs || !ops->get_regs_len)
811 return -EOPNOTSUPP;
812
813 if (copy_from_user(&regs, useraddr, sizeof(regs)))
814 return -EFAULT;
815
816 reglen = ops->get_regs_len(dev);
817 if (regs.len > reglen)
818 regs.len = reglen;
819
a77f5db3 820 regbuf = vmalloc(reglen);
1da177e4
LT		 821 if (!regbuf)
822 return -ENOMEM;
823
824 ops->get_regs(dev, &regs, regbuf);
825
826 ret = -EFAULT;
827 if (copy_to_user(useraddr, &regs, sizeof(regs)))
828 goto out;
829 useraddr += offsetof(struct ethtool_regs, data);
830 if (copy_to_user(useraddr, regbuf, regs.len))
831 goto out;
832 ret = 0;
833
834 out:
a77f5db3 835 vfree(regbuf);
1da177e4
LT		 836 return ret;
837}
838
d73d3a8c
BH		 839static int ethtool_reset(struct net_device *dev, char __user *useraddr)
840{
841 struct ethtool_value reset;
842 int ret;
843
844 if (!dev->ethtool_ops->reset)
845 return -EOPNOTSUPP;
846
847 if (copy_from_user(&reset, useraddr, sizeof(reset)))
848 return -EFAULT;
849
850 ret = dev->ethtool_ops->reset(dev, &reset.data);
851 if (ret)
852 return ret;
853
854 if (copy_to_user(useraddr, &reset, sizeof(reset)))
855 return -EFAULT;
856 return 0;
857}
858
1da177e4
LT		 859static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
860{
8e557421 861 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 862
863 if (!dev->ethtool_ops->get_wol)
864 return -EOPNOTSUPP;
865
866 dev->ethtool_ops->get_wol(dev, &wol);
867
868 if (copy_to_user(useraddr, &wol, sizeof(wol)))
869 return -EFAULT;
870 return 0;
871}
872
873static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
874{
875 struct ethtool_wolinfo wol;
876
877 if (!dev->ethtool_ops->set_wol)
878 return -EOPNOTSUPP;
879
880 if (copy_from_user(&wol, useraddr, sizeof(wol)))
881 return -EFAULT;
882
883 return dev->ethtool_ops->set_wol(dev, &wol);
884}
885
1da177e4
LT		 886static int ethtool_nway_reset(struct net_device *dev)
887{
888 if (!dev->ethtool_ops->nway_reset)
889 return -EOPNOTSUPP;
890
891 return dev->ethtool_ops->nway_reset(dev);
892}
893
e596e6e4
BH		 894static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
895{
896 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
897
898 if (!dev->ethtool_ops->get_link)
899 return -EOPNOTSUPP;
900
901 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
902
903 if (copy_to_user(useraddr, &edata, sizeof(edata)))
904 return -EFAULT;
905 return 0;
906}
907
1da177e4
LT		 908static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
909{
910 struct ethtool_eeprom eeprom;
76fd8593 911 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 912 void __user *userbuf = useraddr + sizeof(eeprom);
913 u32 bytes_remaining;
1da177e4 914 u8 *data;
b131dd5d 915 int ret = 0;
1da177e4
LT		 916
917 if (!ops->get_eeprom || !ops->get_eeprom_len)
918 return -EOPNOTSUPP;
919
920 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
921 return -EFAULT;
922
923 /* Check for wrap and zero */
924 if (eeprom.offset + eeprom.len <= eeprom.offset)
925 return -EINVAL;
926
927 /* Check for exceeding total eeprom len */
928 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
929 return -EINVAL;
930
b131dd5d 931 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 932 if (!data)
933 return -ENOMEM;
934
b131dd5d
MSB		 935 bytes_remaining = eeprom.len;
936 while (bytes_remaining > 0) {
937 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
938
939 ret = ops->get_eeprom(dev, &eeprom, data);
940 if (ret)
941 break;
942 if (copy_to_user(userbuf, data, eeprom.len)) {
943 ret = -EFAULT;
944 break;
945 }
946 userbuf += eeprom.len;
947 eeprom.offset += eeprom.len;
948 bytes_remaining -= eeprom.len;
949 }
1da177e4 950
c5835df9
MSB		 951 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
952 eeprom.offset -= eeprom.len;
953 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
954 ret = -EFAULT;
955
1da177e4
LT		 956 kfree(data);
957 return ret;
958}
959
960static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
961{
962 struct ethtool_eeprom eeprom;
76fd8593 963 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 964 void __user *userbuf = useraddr + sizeof(eeprom);
965 u32 bytes_remaining;
1da177e4 966 u8 *data;
b131dd5d 967 int ret = 0;
1da177e4
LT		 968
969 if (!ops->set_eeprom || !ops->get_eeprom_len)
970 return -EOPNOTSUPP;
971
972 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
973 return -EFAULT;
974
975 /* Check for wrap and zero */
976 if (eeprom.offset + eeprom.len <= eeprom.offset)
977 return -EINVAL;
978
979 /* Check for exceeding total eeprom len */
980 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
981 return -EINVAL;
982
b131dd5d 983 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 984 if (!data)
985 return -ENOMEM;
986
b131dd5d
MSB		 987 bytes_remaining = eeprom.len;
988 while (bytes_remaining > 0) {
989 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
990
991 if (copy_from_user(data, userbuf, eeprom.len)) {
992 ret = -EFAULT;
993 break;
994 }
995 ret = ops->set_eeprom(dev, &eeprom, data);
996 if (ret)
997 break;
998 userbuf += eeprom.len;
999 eeprom.offset += eeprom.len;
1000 bytes_remaining -= eeprom.len;
1001 }
1da177e4 1002
1da177e4
LT		 1003 kfree(data);
1004 return ret;
1005}
1006
97f8aefb 1007static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1008 void __user *useraddr)
1da177e4 1009{
8e557421 1010 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 1011
1012 if (!dev->ethtool_ops->get_coalesce)
1013 return -EOPNOTSUPP;
1014
1015 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1016
1017 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1018 return -EFAULT;
1019 return 0;
1020}
1021
97f8aefb 1022static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1023 void __user *useraddr)
1da177e4
LT		 1024{
1025 struct ethtool_coalesce coalesce;
1026
fa04ae5c 1027 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1028 return -EOPNOTSUPP;
1029
1030 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1031 return -EFAULT;
1032
1033 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1034}
1035
1036static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1037{
8e557421 1038 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1039
1040 if (!dev->ethtool_ops->get_ringparam)
1041 return -EOPNOTSUPP;
1042
1043 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1044
1045 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1046 return -EFAULT;
1047 return 0;
1048}
1049
1050static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1051{
1052 struct ethtool_ringparam ringparam;
1053
1054 if (!dev->ethtool_ops->set_ringparam)
1055 return -EOPNOTSUPP;
1056
1057 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1058 return -EFAULT;
1059
1060 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1061}
1062
1063static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1064{
1065 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1066
1067 if (!dev->ethtool_ops->get_pauseparam)
1068 return -EOPNOTSUPP;
1069
1070 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1071
1072 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1073 return -EFAULT;
1074 return 0;
1075}
1076
1077static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1078{
1079 struct ethtool_pauseparam pauseparam;
1080
e1b90c41 1081 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1082 return -EOPNOTSUPP;
1083
1084 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1085 return -EFAULT;
1086
1087 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1088}
1089
1da177e4
LT		 1090static int __ethtool_set_sg(struct net_device *dev, u32 data)
1091{
1092 int err;
1093
1094 if (!data && dev->ethtool_ops->set_tso) {
1095 err = dev->ethtool_ops->set_tso(dev, 0);
1096 if (err)
1097 return err;
1098 }
1099
e89e9cf5
AR		 1100 if (!data && dev->ethtool_ops->set_ufo) {
1101 err = dev->ethtool_ops->set_ufo(dev, 0);
1102 if (err)
1103 return err;
1104 }
1da177e4
LT		 1105 return dev->ethtool_ops->set_sg(dev, data);
1106}
1107
1108static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
1109{
1110 struct ethtool_value edata;
1111 int err;
1112
1113 if (!dev->ethtool_ops->set_tx_csum)
1114 return -EOPNOTSUPP;
1115
1116 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1117 return -EFAULT;
1118
1119 if (!edata.data && dev->ethtool_ops->set_sg) {
1120 err = __ethtool_set_sg(dev, 0);
1121 if (err)
1122 return err;
1123 }
1124
1125 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
1126}
97f8aefb 1127EXPORT_SYMBOL(ethtool_op_set_tx_csum);
1da177e4 1128
b240a0e5
HX		 1129static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
1130{
1131 struct ethtool_value edata;
1132
1133 if (!dev->ethtool_ops->set_rx_csum)
1134 return -EOPNOTSUPP;
1135
1136 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1137 return -EFAULT;
1138
1139 if (!edata.data && dev->ethtool_ops->set_sg)
1140 dev->features &= ~NETIF_F_GRO;
1141
1142 return dev->ethtool_ops->set_rx_csum(dev, edata.data);
1143}
1144
1da177e4
LT		 1145static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
1146{
1147 struct ethtool_value edata;
1148
1149 if (!dev->ethtool_ops->set_sg)
1150 return -EOPNOTSUPP;
1151
1152 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1153 return -EFAULT;
1154
4ec93edb 1155 if (edata.data &&
8648b305 1156 !(dev->features & NETIF_F_ALL_CSUM))
1da177e4
LT		 1157 return -EINVAL;
1158
1159 return __ethtool_set_sg(dev, edata.data);
1160}
1161
1da177e4
LT		 1162static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
1163{
1164 struct ethtool_value edata;
1165
1166 if (!dev->ethtool_ops->set_tso)
1167 return -EOPNOTSUPP;
1168
1169 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1170 return -EFAULT;
1171
1172 if (edata.data && !(dev->features & NETIF_F_SG))
1173 return -EINVAL;
1174
1175 return dev->ethtool_ops->set_tso(dev, edata.data);
1176}
1177
e89e9cf5
AR		 1178static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
1179{
1180 struct ethtool_value edata;
1181
1182 if (!dev->ethtool_ops->set_ufo)
1183 return -EOPNOTSUPP;
1184 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1185 return -EFAULT;
1186 if (edata.data && !(dev->features & NETIF_F_SG))
1187 return -EINVAL;
79032644
MM		 1188 if (edata.data && !((dev->features & NETIF_F_GEN_CSUM) ||
1189 (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
1190 == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
e89e9cf5
AR		 1191 return -EINVAL;
1192 return dev->ethtool_ops->set_ufo(dev, edata.data);
1193}
1194
37c3185a
HX		 1195static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
1196{
1197 struct ethtool_value edata = { ETHTOOL_GGSO };
1198
1199 edata.data = dev->features & NETIF_F_GSO;
1200 if (copy_to_user(useraddr, &edata, sizeof(edata)))
97f8aefb 1201 return -EFAULT;
37c3185a
HX		 1202 return 0;
1203}
1204
1205static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
1206{
1207 struct ethtool_value edata;
1208
1209 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1210 return -EFAULT;
1211 if (edata.data)
1212 dev->features |= NETIF_F_GSO;
1213 else
1214 dev->features &= ~NETIF_F_GSO;
1215 return 0;
1216}
1217
b240a0e5
HX		 1218static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
1219{
1220 struct ethtool_value edata = { ETHTOOL_GGRO };
1221
1222 edata.data = dev->features & NETIF_F_GRO;
1223 if (copy_to_user(useraddr, &edata, sizeof(edata)))
97f8aefb 1224 return -EFAULT;
b240a0e5
HX		 1225 return 0;
1226}
1227
1228static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
1229{
1230 struct ethtool_value edata;
1231
1232 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1233 return -EFAULT;
1234
1235 if (edata.data) {
67c96608
ED		 1236 u32 rxcsum = dev->ethtool_ops->get_rx_csum ?
1237 dev->ethtool_ops->get_rx_csum(dev) :
1238 ethtool_op_get_rx_csum(dev);
1239
1240 if (!rxcsum)
b240a0e5
HX		 1241 return -EINVAL;
1242 dev->features |= NETIF_F_GRO;
1243 } else
1244 dev->features &= ~NETIF_F_GRO;
1245
1246 return 0;
1247}
1248
1da177e4
LT		 1249static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1250{
1251 struct ethtool_test test;
76fd8593 1252 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1253 u64 *data;
ff03d49f 1254 int ret, test_len;
1da177e4 1255
a9828ec6 1256 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1257 return -EOPNOTSUPP;
1258
a9828ec6 1259 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1260 if (test_len < 0)
1261 return test_len;
1262 WARN_ON(test_len == 0);
1263
1da177e4
LT		 1264 if (copy_from_user(&test, useraddr, sizeof(test)))
1265 return -EFAULT;
1266
ff03d49f
JG		 1267 test.len = test_len;
1268 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1269 if (!data)
1270 return -ENOMEM;
1271
1272 ops->self_test(dev, &test, data);
1273
1274 ret = -EFAULT;
1275 if (copy_to_user(useraddr, &test, sizeof(test)))
1276 goto out;
1277 useraddr += sizeof(test);
1278 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1279 goto out;
1280 ret = 0;
1281
1282 out:
1283 kfree(data);
1284 return ret;
1285}
1286
1287static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1288{
1289 struct ethtool_gstrings gstrings;
76fd8593 1290 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1291 u8 *data;
1292 int ret;
1293
a9828ec6 1294 if (!ops->get_strings || !ops->get_sset_count)
1da177e4
LT		 1295 return -EOPNOTSUPP;
1296
1297 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1298 return -EFAULT;
1299
a9828ec6
BH		 1300 ret = ops->get_sset_count(dev, gstrings.string_set);
1301 if (ret < 0)
1302 return ret;
1303
1304 gstrings.len = ret;
1da177e4
LT		 1305
1306 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1307 if (!data)
1308 return -ENOMEM;
1309
1310 ops->get_strings(dev, gstrings.string_set, data);
1311
1312 ret = -EFAULT;
1313 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1314 goto out;
1315 useraddr += sizeof(gstrings);
1316 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1317 goto out;
1318 ret = 0;
1319
1320 out:
1321 kfree(data);
1322 return ret;
1323}
1324
1325static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1326{
1327 struct ethtool_value id;
1328
1329 if (!dev->ethtool_ops->phys_id)
1330 return -EOPNOTSUPP;
1331
1332 if (copy_from_user(&id, useraddr, sizeof(id)))
1333 return -EFAULT;
1334
1335 return dev->ethtool_ops->phys_id(dev, id.data);
1336}
1337
1338static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1339{
1340 struct ethtool_stats stats;
76fd8593 1341 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1342 u64 *data;
ff03d49f 1343 int ret, n_stats;
1da177e4 1344
a9828ec6 1345 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1346 return -EOPNOTSUPP;
1347
a9828ec6 1348 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1349 if (n_stats < 0)
1350 return n_stats;
1351 WARN_ON(n_stats == 0);
1352
1da177e4
LT		 1353 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1354 return -EFAULT;
1355
ff03d49f
JG		 1356 stats.n_stats = n_stats;
1357 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1da177e4
LT		 1358 if (!data)
1359 return -ENOMEM;
1360
1361 ops->get_ethtool_stats(dev, &stats, data);
1362
1363 ret = -EFAULT;
1364 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1365 goto out;
1366 useraddr += sizeof(stats);
1367 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1368 goto out;
1369 ret = 0;
1370
1371 out:
1372 kfree(data);
1373 return ret;
1374}
1375
0bf0519d 1376static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1377{
1378 struct ethtool_perm_addr epaddr;
a6f9a705 1379
313674af 1380 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 1381 return -EFAULT;
1382
313674af
MW		 1383 if (epaddr.size < dev->addr_len)
1384 return -ETOOSMALL;
1385 epaddr.size = dev->addr_len;
a6f9a705 1386
a6f9a705 1387 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 1388 return -EFAULT;
a6f9a705 1389 useraddr += sizeof(epaddr);
313674af
MW		 1390 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1391 return -EFAULT;
1392 return 0;
a6f9a705
JW		 1393}
1394
13c99b24
JG		 1395static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1396 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 1397{
8e557421 1398 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 1399
13c99b24 1400 if (!actor)
3ae7c0b2
JG		 1401 return -EOPNOTSUPP;
1402
13c99b24 1403 edata.data = actor(dev);
3ae7c0b2
JG		 1404
1405 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1406 return -EFAULT;
1407 return 0;
1408}
1409
13c99b24
JG		 1410static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1411 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 1412{
1413 struct ethtool_value edata;
1414
13c99b24 1415 if (!actor)
3ae7c0b2
JG		 1416 return -EOPNOTSUPP;
1417
1418 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1419 return -EFAULT;
1420
13c99b24 1421 actor(dev, edata.data);
339bf024
JG		 1422 return 0;
1423}
1424
13c99b24
JG		 1425static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1426 int (*actor)(struct net_device *, u32))
339bf024
JG		 1427{
1428 struct ethtool_value edata;
1429
13c99b24 1430 if (!actor)
339bf024
JG		 1431 return -EOPNOTSUPP;
1432
1433 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1434 return -EFAULT;
1435
13c99b24 1436 return actor(dev, edata.data);
339bf024
JG		 1437}
1438
97f8aefb 1439static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1440 char __user *useraddr)
05c6a8d7
AK		 1441{
1442 struct ethtool_flash efl;
1443
1444 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1445 return -EFAULT;
1446
1447 if (!dev->ethtool_ops->flash_device)
1448 return -EOPNOTSUPP;
1449
1450 return dev->ethtool_ops->flash_device(dev, &efl);
1451}
1452
1da177e4
LT		 1453/* The main entry point in this file. Called from net/core/dev.c */
1454
881d966b 1455int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 1456{
881d966b 1457 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4
LT		 1458 void __user *useraddr = ifr->ifr_data;
1459 u32 ethcmd;
1460 int rc;
81e81575 1461 unsigned long old_features;
1da177e4 1462
1da177e4
LT		 1463 if (!dev || !netif_device_present(dev))
1464 return -ENODEV;
1465
97f8aefb 1466 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 1467 return -EFAULT;
1468
01414802
BH		 1469 if (!dev->ethtool_ops) {
1470 /* ETHTOOL_GDRVINFO does not require any driver support.
1471 * It is also unprivileged and does not change anything,
1472 * so we can take a shortcut to it. */
1473 if (ethcmd == ETHTOOL_GDRVINFO)
1474 return ethtool_get_drvinfo(dev, useraddr);
1475 else
1476 return -EOPNOTSUPP;
1477 }
1478
75f3123c 1479 /* Allow some commands to be done by anyone */
97f8aefb 1480 switch (ethcmd) {
0fdc100b 1481 case ETHTOOL_GSET:
75f3123c 1482 case ETHTOOL_GDRVINFO:
75f3123c 1483 case ETHTOOL_GMSGLVL:
75f3123c
SH		 1484 case ETHTOOL_GCOALESCE:
1485 case ETHTOOL_GRINGPARAM:
1486 case ETHTOOL_GPAUSEPARAM:
1487 case ETHTOOL_GRXCSUM:
1488 case ETHTOOL_GTXCSUM:
1489 case ETHTOOL_GSG:
1490 case ETHTOOL_GSTRINGS:
75f3123c
SH		 1491 case ETHTOOL_GTSO:
1492 case ETHTOOL_GPERMADDR:
1493 case ETHTOOL_GUFO:
1494 case ETHTOOL_GGSO:
1cab819b 1495 case ETHTOOL_GGRO:
339bf024
JG		 1496 case ETHTOOL_GFLAGS:
1497 case ETHTOOL_GPFLAGS:
0853ad66 1498 case ETHTOOL_GRXFH:
59089d8d
SB		 1499 case ETHTOOL_GRXRINGS:
1500 case ETHTOOL_GRXCLSRLCNT:
1501 case ETHTOOL_GRXCLSRULE:
1502 case ETHTOOL_GRXCLSRLALL:
75f3123c
SH		 1503 break;
1504 default:
1505 if (!capable(CAP_NET_ADMIN))
1506 return -EPERM;
1507 }
1508
97f8aefb 1509 if (dev->ethtool_ops->begin) {
1510 rc = dev->ethtool_ops->begin(dev);
1511 if (rc < 0)
1da177e4 1512 return rc;
97f8aefb 1513 }
d8a33ac4
SH		 1514 old_features = dev->features;
1515
1da177e4
LT		 1516 switch (ethcmd) {
1517 case ETHTOOL_GSET:
1518 rc = ethtool_get_settings(dev, useraddr);
1519 break;
1520 case ETHTOOL_SSET:
1521 rc = ethtool_set_settings(dev, useraddr);
1522 break;
1523 case ETHTOOL_GDRVINFO:
1524 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 1525 break;
1526 case ETHTOOL_GREGS:
1527 rc = ethtool_get_regs(dev, useraddr);
1528 break;
1529 case ETHTOOL_GWOL:
1530 rc = ethtool_get_wol(dev, useraddr);
1531 break;
1532 case ETHTOOL_SWOL:
1533 rc = ethtool_set_wol(dev, useraddr);
1534 break;
1535 case ETHTOOL_GMSGLVL:
13c99b24
JG		 1536 rc = ethtool_get_value(dev, useraddr, ethcmd,
1537 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 1538 break;
1539 case ETHTOOL_SMSGLVL:
13c99b24
JG		 1540 rc = ethtool_set_value_void(dev, useraddr,
1541 dev->ethtool_ops->set_msglevel);
1da177e4
LT		 1542 break;
1543 case ETHTOOL_NWAY_RST:
1544 rc = ethtool_nway_reset(dev);
1545 break;
1546 case ETHTOOL_GLINK:
e596e6e4 1547 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 1548 break;
1549 case ETHTOOL_GEEPROM:
1550 rc = ethtool_get_eeprom(dev, useraddr);
1551 break;
1552 case ETHTOOL_SEEPROM:
1553 rc = ethtool_set_eeprom(dev, useraddr);
1554 break;
1555 case ETHTOOL_GCOALESCE:
1556 rc = ethtool_get_coalesce(dev, useraddr);
1557 break;
1558 case ETHTOOL_SCOALESCE:
1559 rc = ethtool_set_coalesce(dev, useraddr);
1560 break;
1561 case ETHTOOL_GRINGPARAM:
1562 rc = ethtool_get_ringparam(dev, useraddr);
1563 break;
1564 case ETHTOOL_SRINGPARAM:
1565 rc = ethtool_set_ringparam(dev, useraddr);
1566 break;
1567 case ETHTOOL_GPAUSEPARAM:
1568 rc = ethtool_get_pauseparam(dev, useraddr);
1569 break;
1570 case ETHTOOL_SPAUSEPARAM:
1571 rc = ethtool_set_pauseparam(dev, useraddr);
1572 break;
1573 case ETHTOOL_GRXCSUM:
13c99b24 1574 rc = ethtool_get_value(dev, useraddr, ethcmd,
1896e61f
SS		 1575 (dev->ethtool_ops->get_rx_csum ?
1576 dev->ethtool_ops->get_rx_csum :
1577 ethtool_op_get_rx_csum));
1da177e4
LT		 1578 break;
1579 case ETHTOOL_SRXCSUM:
b240a0e5 1580 rc = ethtool_set_rx_csum(dev, useraddr);
1da177e4
LT		 1581 break;
1582 case ETHTOOL_GTXCSUM:
13c99b24 1583 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1584 (dev->ethtool_ops->get_tx_csum ?
1585 dev->ethtool_ops->get_tx_csum :
1586 ethtool_op_get_tx_csum));
1da177e4
LT		 1587 break;
1588 case ETHTOOL_STXCSUM:
1589 rc = ethtool_set_tx_csum(dev, useraddr);
1590 break;
1591 case ETHTOOL_GSG:
13c99b24 1592 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1593 (dev->ethtool_ops->get_sg ?
1594 dev->ethtool_ops->get_sg :
1595 ethtool_op_get_sg));
1da177e4
LT		 1596 break;
1597 case ETHTOOL_SSG:
1598 rc = ethtool_set_sg(dev, useraddr);
1599 break;
1600 case ETHTOOL_GTSO:
13c99b24 1601 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1602 (dev->ethtool_ops->get_tso ?
1603 dev->ethtool_ops->get_tso :
1604 ethtool_op_get_tso));
1da177e4
LT		 1605 break;
1606 case ETHTOOL_STSO:
1607 rc = ethtool_set_tso(dev, useraddr);
1608 break;
1609 case ETHTOOL_TEST:
1610 rc = ethtool_self_test(dev, useraddr);
1611 break;
1612 case ETHTOOL_GSTRINGS:
1613 rc = ethtool_get_strings(dev, useraddr);
1614 break;
1615 case ETHTOOL_PHYS_ID:
1616 rc = ethtool_phys_id(dev, useraddr);
1617 break;
1618 case ETHTOOL_GSTATS:
1619 rc = ethtool_get_stats(dev, useraddr);
1620 break;
a6f9a705
JW		 1621 case ETHTOOL_GPERMADDR:
1622 rc = ethtool_get_perm_addr(dev, useraddr);
1623 break;
e89e9cf5 1624 case ETHTOOL_GUFO:
13c99b24 1625 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1626 (dev->ethtool_ops->get_ufo ?
1627 dev->ethtool_ops->get_ufo :
1628 ethtool_op_get_ufo));
e89e9cf5
AR		 1629 break;
1630 case ETHTOOL_SUFO:
1631 rc = ethtool_set_ufo(dev, useraddr);
1632 break;
37c3185a
HX		 1633 case ETHTOOL_GGSO:
1634 rc = ethtool_get_gso(dev, useraddr);
1635 break;
1636 case ETHTOOL_SGSO:
1637 rc = ethtool_set_gso(dev, useraddr);
1638 break;
3ae7c0b2 1639 case ETHTOOL_GFLAGS:
13c99b24 1640 rc = ethtool_get_value(dev, useraddr, ethcmd,
1896e61f
SS		 1641 (dev->ethtool_ops->get_flags ?
1642 dev->ethtool_ops->get_flags :
1643 ethtool_op_get_flags));
3ae7c0b2
JG		 1644 break;
1645 case ETHTOOL_SFLAGS:
13c99b24
JG		 1646 rc = ethtool_set_value(dev, useraddr,
1647 dev->ethtool_ops->set_flags);
3ae7c0b2 1648 break;
339bf024 1649 case ETHTOOL_GPFLAGS:
13c99b24
JG		 1650 rc = ethtool_get_value(dev, useraddr, ethcmd,
1651 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 1652 break;
1653 case ETHTOOL_SPFLAGS:
13c99b24
JG		 1654 rc = ethtool_set_value(dev, useraddr,
1655 dev->ethtool_ops->set_priv_flags);
339bf024 1656 break;
0853ad66 1657 case ETHTOOL_GRXFH:
59089d8d
SB		 1658 case ETHTOOL_GRXRINGS:
1659 case ETHTOOL_GRXCLSRLCNT:
1660 case ETHTOOL_GRXCLSRULE:
1661 case ETHTOOL_GRXCLSRLALL:
bf988435 1662 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 1663 break;
1664 case ETHTOOL_SRXFH:
59089d8d
SB		 1665 case ETHTOOL_SRXCLSRLDEL:
1666 case ETHTOOL_SRXCLSRLINS:
bf988435 1667 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 1668 break;
b240a0e5
HX		 1669 case ETHTOOL_GGRO:
1670 rc = ethtool_get_gro(dev, useraddr);
1671 break;
1672 case ETHTOOL_SGRO:
1673 rc = ethtool_set_gro(dev, useraddr);
1674 break;
05c6a8d7
AK		 1675 case ETHTOOL_FLASHDEV:
1676 rc = ethtool_flash_device(dev, useraddr);
1677 break;
d73d3a8c
BH		 1678 case ETHTOOL_RESET:
1679 rc = ethtool_reset(dev, useraddr);
1680 break;
15682bc4
PWJ		 1681 case ETHTOOL_SRXNTUPLE:
1682 rc = ethtool_set_rx_ntuple(dev, useraddr);
1683 break;
1684 case ETHTOOL_GRXNTUPLE:
1685 rc = ethtool_get_rx_ntuple(dev, useraddr);
1686 break;
723b2f57
JG		 1687 case ETHTOOL_GSSET_INFO:
1688 rc = ethtool_get_sset_info(dev, useraddr);
1689 break;
a5b6ee29
BH		 1690 case ETHTOOL_GRXFHINDIR:
1691 rc = ethtool_get_rxfh_indir(dev, useraddr);
1692 break;
1693 case ETHTOOL_SRXFHINDIR:
1694 rc = ethtool_set_rxfh_indir(dev, useraddr);
1695 break;
1da177e4 1696 default:
61a44b9c 1697 rc = -EOPNOTSUPP;
1da177e4 1698 }
4ec93edb 1699
e71a4783 1700 if (dev->ethtool_ops->complete)
1da177e4 1701 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 1702
1703 if (old_features != dev->features)
1704 netdev_features_change(dev);
1705
1da177e4 1706 return rc;
1da177e4 1707}
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