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net: clear heap allocation for ETHTOOL_GRXCLSRLALL
[net-next-2.6.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>
5a0e3ad6 22#include <linux/slab.h>
1da177e4 23
4ec93edb 24/*
1da177e4
LT		 25 * Some useful ethtool_ops methods that're device independent.
26 * If we find that all drivers want to do the same thing here,
27 * we can turn these into dev_() function calls.
28 */
29
30u32 ethtool_op_get_link(struct net_device *dev)
31{
32 return netif_carrier_ok(dev) ? 1 : 0;
33}
97f8aefb 34EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 35
1896e61f
SS		 36u32 ethtool_op_get_rx_csum(struct net_device *dev)
37{
38 return (dev->features & NETIF_F_ALL_CSUM) != 0;
39}
8a729fce 40EXPORT_SYMBOL(ethtool_op_get_rx_csum);
1896e61f 41
1da177e4
LT		 42u32 ethtool_op_get_tx_csum(struct net_device *dev)
43{
8648b305 44 return (dev->features & NETIF_F_ALL_CSUM) != 0;
1da177e4 45}
8a729fce 46EXPORT_SYMBOL(ethtool_op_get_tx_csum);
1da177e4
LT		 47
48int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
49{
50 if (data)
51 dev->features |= NETIF_F_IP_CSUM;
52 else
53 dev->features &= ~NETIF_F_IP_CSUM;
54
55 return 0;
56}
57
69f6a0fa
JM		 58int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
59{
60 if (data)
61 dev->features |= NETIF_F_HW_CSUM;
62 else
63 dev->features &= ~NETIF_F_HW_CSUM;
64
65 return 0;
66}
97f8aefb 67EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
6460d948
MC		 68
69int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
70{
71 if (data)
72 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
73 else
74 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
75
76 return 0;
77}
97f8aefb 78EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
6460d948 79
1da177e4
LT		 80u32 ethtool_op_get_sg(struct net_device *dev)
81{
82 return (dev->features & NETIF_F_SG) != 0;
83}
97f8aefb 84EXPORT_SYMBOL(ethtool_op_get_sg);
1da177e4
LT		 85
86int ethtool_op_set_sg(struct net_device *dev, u32 data)
87{
88 if (data)
89 dev->features |= NETIF_F_SG;
90 else
91 dev->features &= ~NETIF_F_SG;
92
93 return 0;
94}
97f8aefb 95EXPORT_SYMBOL(ethtool_op_set_sg);
1da177e4
LT		 96
97u32 ethtool_op_get_tso(struct net_device *dev)
98{
99 return (dev->features & NETIF_F_TSO) != 0;
100}
97f8aefb 101EXPORT_SYMBOL(ethtool_op_get_tso);
1da177e4
LT		 102
103int ethtool_op_set_tso(struct net_device *dev, u32 data)
104{
105 if (data)
106 dev->features |= NETIF_F_TSO;
107 else
108 dev->features &= ~NETIF_F_TSO;
109
110 return 0;
111}
97f8aefb 112EXPORT_SYMBOL(ethtool_op_set_tso);
1da177e4 113
e89e9cf5
AR		 114u32 ethtool_op_get_ufo(struct net_device *dev)
115{
116 return (dev->features & NETIF_F_UFO) != 0;
117}
97f8aefb 118EXPORT_SYMBOL(ethtool_op_get_ufo);
e89e9cf5
AR		 119
120int ethtool_op_set_ufo(struct net_device *dev, u32 data)
121{
122 if (data)
123 dev->features |= NETIF_F_UFO;
124 else
125 dev->features &= ~NETIF_F_UFO;
126 return 0;
127}
97f8aefb 128EXPORT_SYMBOL(ethtool_op_set_ufo);
e89e9cf5 129
3ae7c0b2
JG		 130/* the following list of flags are the same as their associated
131 * NETIF_F_xxx values in include/linux/netdevice.h
132 */
133static const u32 flags_dup_features =
b00fabb4 134 (ETH_FLAG_LRO | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH);
3ae7c0b2
JG		 135
136u32 ethtool_op_get_flags(struct net_device *dev)
137{
138 /* in the future, this function will probably contain additional
139 * handling for flags which are not so easily handled
140 * by a simple masking operation
141 */
142
143 return dev->features & flags_dup_features;
144}
97f8aefb 145EXPORT_SYMBOL(ethtool_op_get_flags);
3ae7c0b2 146
1437ce39 147int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
3ae7c0b2 148{
1437ce39
BH		 149 if (data & ~supported)
150 return -EINVAL;
0d643e1f 151
1437ce39
BH		 152 dev->features = ((dev->features & ~flags_dup_features) |
153 (data & flags_dup_features));
3ae7c0b2
JG		 154 return 0;
155}
97f8aefb 156EXPORT_SYMBOL(ethtool_op_set_flags);
3ae7c0b2 157
15682bc4
PWJ		 158void ethtool_ntuple_flush(struct net_device *dev)
159{
160 struct ethtool_rx_ntuple_flow_spec_container *fsc, *f;
161
162 list_for_each_entry_safe(fsc, f, &dev->ethtool_ntuple_list.list, list) {
163 list_del(&fsc->list);
164 kfree(fsc);
165 }
166 dev->ethtool_ntuple_list.count = 0;
167}
168EXPORT_SYMBOL(ethtool_ntuple_flush);
169
1da177e4
LT		 170/* Handlers for each ethtool command */
171
172static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
173{
8e557421 174 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
1da177e4
LT		 175 int err;
176
177 if (!dev->ethtool_ops->get_settings)
178 return -EOPNOTSUPP;
179
180 err = dev->ethtool_ops->get_settings(dev, &cmd);
181 if (err < 0)
182 return err;
183
184 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
185 return -EFAULT;
186 return 0;
187}
188
189static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
190{
191 struct ethtool_cmd cmd;
192
193 if (!dev->ethtool_ops->set_settings)
194 return -EOPNOTSUPP;
195
196 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
197 return -EFAULT;
198
199 return dev->ethtool_ops->set_settings(dev, &cmd);
200}
201
97f8aefb 202static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
203 void __user *useraddr)
1da177e4
LT		 204{
205 struct ethtool_drvinfo info;
76fd8593 206 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 207
208 if (!ops->get_drvinfo)
209 return -EOPNOTSUPP;
210
211 memset(&info, 0, sizeof(info));
212 info.cmd = ETHTOOL_GDRVINFO;
213 ops->get_drvinfo(dev, &info);
214
723b2f57
JG		 215 /*
216 * this method of obtaining string set info is deprecated;
d17792eb 217 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 218 */
ff03d49f
JG		 219 if (ops->get_sset_count) {
220 int rc;
221
222 rc = ops->get_sset_count(dev, ETH_SS_TEST);
223 if (rc >= 0)
224 info.testinfo_len = rc;
225 rc = ops->get_sset_count(dev, ETH_SS_STATS);
226 if (rc >= 0)
227 info.n_stats = rc;
339bf024
JG		 228 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
229 if (rc >= 0)
230 info.n_priv_flags = rc;
ff03d49f 231 }
1da177e4
LT		 232 if (ops->get_regs_len)
233 info.regdump_len = ops->get_regs_len(dev);
234 if (ops->get_eeprom_len)
235 info.eedump_len = ops->get_eeprom_len(dev);
236
237 if (copy_to_user(useraddr, &info, sizeof(info)))
238 return -EFAULT;
239 return 0;
240}
241
f5c445ed 242static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 243 void __user *useraddr)
723b2f57
JG		 244{
245 struct ethtool_sset_info info;
246 const struct ethtool_ops *ops = dev->ethtool_ops;
247 u64 sset_mask;
248 int i, idx = 0, n_bits = 0, ret, rc;
249 u32 *info_buf = NULL;
250
251 if (!ops->get_sset_count)
252 return -EOPNOTSUPP;
253
254 if (copy_from_user(&info, useraddr, sizeof(info)))
255 return -EFAULT;
256
257 /* store copy of mask, because we zero struct later on */
258 sset_mask = info.sset_mask;
259 if (!sset_mask)
260 return 0;
261
262 /* calculate size of return buffer */
d17792eb 263 n_bits = hweight64(sset_mask);
723b2f57
JG		 264
265 memset(&info, 0, sizeof(info));
266 info.cmd = ETHTOOL_GSSET_INFO;
267
268 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
269 if (!info_buf)
270 return -ENOMEM;
271
272 /*
273 * fill return buffer based on input bitmask and successful
274 * get_sset_count return
275 */
276 for (i = 0; i < 64; i++) {
277 if (!(sset_mask & (1ULL << i)))
278 continue;
279
280 rc = ops->get_sset_count(dev, i);
281 if (rc >= 0) {
282 info.sset_mask |= (1ULL << i);
283 info_buf[idx++] = rc;
284 }
285 }
286
287 ret = -EFAULT;
288 if (copy_to_user(useraddr, &info, sizeof(info)))
289 goto out;
290
291 useraddr += offsetof(struct ethtool_sset_info, data);
292 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
293 goto out;
294
295 ret = 0;
296
297out:
298 kfree(info_buf);
299 return ret;
300}
301
97f8aefb 302static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 303 u32 cmd, void __user *useraddr)
0853ad66 304{
bf988435
BH		 305 struct ethtool_rxnfc info;
306 size_t info_size = sizeof(info);
0853ad66 307
59089d8d 308 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 309 return -EOPNOTSUPP;
310
bf988435
BH		 311 /* struct ethtool_rxnfc was originally defined for
312 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
313 * members. User-space might still be using that
314 * definition. */
315 if (cmd == ETHTOOL_SRXFH)
316 info_size = (offsetof(struct ethtool_rxnfc, data) +
317 sizeof(info.data));
318
319 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 320 return -EFAULT;
321
bf988435 322 return dev->ethtool_ops->set_rxnfc(dev, &info);
0853ad66
SB		 323}
324
97f8aefb 325static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 326 u32 cmd, void __user *useraddr)
0853ad66
SB		 327{
328 struct ethtool_rxnfc info;
bf988435 329 size_t info_size = sizeof(info);
59089d8d
SB		 330 const struct ethtool_ops *ops = dev->ethtool_ops;
331 int ret;
332 void *rule_buf = NULL;
0853ad66 333
59089d8d 334 if (!ops->get_rxnfc)
0853ad66
SB		 335 return -EOPNOTSUPP;
336
bf988435
BH		 337 /* struct ethtool_rxnfc was originally defined for
338 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
339 * members. User-space might still be using that
340 * definition. */
341 if (cmd == ETHTOOL_GRXFH)
342 info_size = (offsetof(struct ethtool_rxnfc, data) +
343 sizeof(info.data));
344
345 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 346 return -EFAULT;
347
59089d8d
SB		 348 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
349 if (info.rule_cnt > 0) {
db048b69 350 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 351 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 352 GFP_USER);
59089d8d
SB		 353 if (!rule_buf)
354 return -ENOMEM;
355 }
356 }
0853ad66 357
59089d8d
SB		 358 ret = ops->get_rxnfc(dev, &info, rule_buf);
359 if (ret < 0)
360 goto err_out;
361
362 ret = -EFAULT;
bf988435 363 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 364 goto err_out;
365
366 if (rule_buf) {
367 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
368 if (copy_to_user(useraddr, rule_buf,
369 info.rule_cnt * sizeof(u32)))
370 goto err_out;
371 }
372 ret = 0;
373
374err_out:
c9caceca 375 kfree(rule_buf);
59089d8d
SB		 376
377 return ret;
0853ad66
SB		 378}
379
a5b6ee29
BH		 380static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
381 void __user *useraddr)
382{
383 struct ethtool_rxfh_indir *indir;
384 u32 table_size;
385 size_t full_size;
386 int ret;
387
388 if (!dev->ethtool_ops->get_rxfh_indir)
389 return -EOPNOTSUPP;
390
391 if (copy_from_user(&table_size,
392 useraddr + offsetof(struct ethtool_rxfh_indir, size),
393 sizeof(table_size)))
394 return -EFAULT;
395
396 if (table_size >
397 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
398 return -ENOMEM;
399 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
400 indir = kmalloc(full_size, GFP_USER);
401 if (!indir)
402 return -ENOMEM;
403
404 indir->cmd = ETHTOOL_GRXFHINDIR;
405 indir->size = table_size;
406 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
407 if (ret)
408 goto out;
409
410 if (copy_to_user(useraddr, indir, full_size))
411 ret = -EFAULT;
412
413out:
414 kfree(indir);
415 return ret;
416}
417
418static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
419 void __user *useraddr)
420{
421 struct ethtool_rxfh_indir *indir;
422 u32 table_size;
423 size_t full_size;
424 int ret;
425
426 if (!dev->ethtool_ops->set_rxfh_indir)
427 return -EOPNOTSUPP;
428
429 if (copy_from_user(&table_size,
430 useraddr + offsetof(struct ethtool_rxfh_indir, size),
431 sizeof(table_size)))
432 return -EFAULT;
433
434 if (table_size >
435 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
436 return -ENOMEM;
437 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
438 indir = kmalloc(full_size, GFP_USER);
439 if (!indir)
440 return -ENOMEM;
441
442 if (copy_from_user(indir, useraddr, full_size)) {
443 ret = -EFAULT;
444 goto out;
445 }
446
447 ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
448
449out:
450 kfree(indir);
451 return ret;
452}
453
e8589118 454static void __rx_ntuple_filter_add(struct ethtool_rx_ntuple_list *list,
97f8aefb 455 struct ethtool_rx_ntuple_flow_spec *spec,
456 struct ethtool_rx_ntuple_flow_spec_container *fsc)
15682bc4 457{
15682bc4
PWJ		 458
459 /* don't add filters forever */
e8589118
PW		 460 if (list->count >= ETHTOOL_MAX_NTUPLE_LIST_ENTRY) {
461 /* free the container */
462 kfree(fsc);
463 return;
464 }
15682bc4
PWJ		 465
466 /* Copy the whole filter over */
467 fsc->fs.flow_type = spec->flow_type;
468 memcpy(&fsc->fs.h_u, &spec->h_u, sizeof(spec->h_u));
469 memcpy(&fsc->fs.m_u, &spec->m_u, sizeof(spec->m_u));
470
471 fsc->fs.vlan_tag = spec->vlan_tag;
472 fsc->fs.vlan_tag_mask = spec->vlan_tag_mask;
473 fsc->fs.data = spec->data;
474 fsc->fs.data_mask = spec->data_mask;
475 fsc->fs.action = spec->action;
476
477 /* add to the list */
478 list_add_tail_rcu(&fsc->list, &list->list);
479 list->count++;
15682bc4
PWJ		 480}
481
97f8aefb 482static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
483 void __user *useraddr)
15682bc4
PWJ		 484{
485 struct ethtool_rx_ntuple cmd;
486 const struct ethtool_ops *ops = dev->ethtool_ops;
e8589118 487 struct ethtool_rx_ntuple_flow_spec_container *fsc = NULL;
15682bc4
PWJ		 488 int ret;
489
15682bc4
PWJ		 490 if (!(dev->features & NETIF_F_NTUPLE))
491 return -EINVAL;
492
493 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
494 return -EFAULT;
495
15682bc4
PWJ		 496 /*
497 * Cache filter in dev struct for GET operation only if
498 * the underlying driver doesn't have its own GET operation, and
e8589118
PW		 499 * only if the filter was added successfully. First make sure we
500 * can allocate the filter, then continue if successful.
15682bc4 501 */
e8589118
PW		 502 if (!ops->get_rx_ntuple) {
503 fsc = kmalloc(sizeof(*fsc), GFP_ATOMIC);
504 if (!fsc)
15682bc4 505 return -ENOMEM;
e8589118
PW		 506 }
507
508 ret = ops->set_rx_ntuple(dev, &cmd);
509 if (ret) {
510 kfree(fsc);
511 return ret;
512 }
513
514 if (!ops->get_rx_ntuple)
515 __rx_ntuple_filter_add(&dev->ethtool_ntuple_list, &cmd.fs, fsc);
15682bc4
PWJ		 516
517 return ret;
518}
519
520static int ethtool_get_rx_ntuple(struct net_device *dev, void __user *useraddr)
521{
522 struct ethtool_gstrings gstrings;
523 const struct ethtool_ops *ops = dev->ethtool_ops;
524 struct ethtool_rx_ntuple_flow_spec_container *fsc;
525 u8 *data;
526 char *p;
527 int ret, i, num_strings = 0;
528
529 if (!ops->get_sset_count)
530 return -EOPNOTSUPP;
531
532 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
533 return -EFAULT;
534
535 ret = ops->get_sset_count(dev, gstrings.string_set);
536 if (ret < 0)
537 return ret;
538
539 gstrings.len = ret;
540
541 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
542 if (!data)
543 return -ENOMEM;
544
545 if (ops->get_rx_ntuple) {
546 /* driver-specific filter grab */
547 ret = ops->get_rx_ntuple(dev, gstrings.string_set, data);
548 goto copy;
549 }
550
551 /* default ethtool filter grab */
552 i = 0;
553 p = (char *)data;
554 list_for_each_entry(fsc, &dev->ethtool_ntuple_list.list, list) {
555 sprintf(p, "Filter %d:\n", i);
556 p += ETH_GSTRING_LEN;
557 num_strings++;
558
559 switch (fsc->fs.flow_type) {
560 case TCP_V4_FLOW:
561 sprintf(p, "\tFlow Type: TCP\n");
562 p += ETH_GSTRING_LEN;
563 num_strings++;
564 break;
565 case UDP_V4_FLOW:
566 sprintf(p, "\tFlow Type: UDP\n");
567 p += ETH_GSTRING_LEN;
568 num_strings++;
569 break;
570 case SCTP_V4_FLOW:
571 sprintf(p, "\tFlow Type: SCTP\n");
572 p += ETH_GSTRING_LEN;
573 num_strings++;
574 break;
575 case AH_ESP_V4_FLOW:
576 sprintf(p, "\tFlow Type: AH ESP\n");
577 p += ETH_GSTRING_LEN;
578 num_strings++;
579 break;
580 case ESP_V4_FLOW:
581 sprintf(p, "\tFlow Type: ESP\n");
582 p += ETH_GSTRING_LEN;
583 num_strings++;
584 break;
585 case IP_USER_FLOW:
586 sprintf(p, "\tFlow Type: Raw IP\n");
587 p += ETH_GSTRING_LEN;
588 num_strings++;
589 break;
590 case IPV4_FLOW:
591 sprintf(p, "\tFlow Type: IPv4\n");
592 p += ETH_GSTRING_LEN;
593 num_strings++;
594 break;
595 default:
596 sprintf(p, "\tFlow Type: Unknown\n");
597 p += ETH_GSTRING_LEN;
598 num_strings++;
599 goto unknown_filter;
ccbd6a5a 600 }
15682bc4
PWJ		 601
602 /* now the rest of the filters */
603 switch (fsc->fs.flow_type) {
604 case TCP_V4_FLOW:
605 case UDP_V4_FLOW:
606 case SCTP_V4_FLOW:
607 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 608 fsc->fs.h_u.tcp_ip4_spec.ip4src);
15682bc4
PWJ		 609 p += ETH_GSTRING_LEN;
610 num_strings++;
611 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 612 fsc->fs.m_u.tcp_ip4_spec.ip4src);
15682bc4
PWJ		 613 p += ETH_GSTRING_LEN;
614 num_strings++;
615 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 616 fsc->fs.h_u.tcp_ip4_spec.ip4dst);
15682bc4
PWJ		 617 p += ETH_GSTRING_LEN;
618 num_strings++;
619 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 620 fsc->fs.m_u.tcp_ip4_spec.ip4dst);
15682bc4
PWJ		 621 p += ETH_GSTRING_LEN;
622 num_strings++;
623 sprintf(p, "\tSrc Port: %d, mask: 0x%x\n",
97f8aefb 624 fsc->fs.h_u.tcp_ip4_spec.psrc,
625 fsc->fs.m_u.tcp_ip4_spec.psrc);
15682bc4
PWJ		 626 p += ETH_GSTRING_LEN;
627 num_strings++;
628 sprintf(p, "\tDest Port: %d, mask: 0x%x\n",
97f8aefb 629 fsc->fs.h_u.tcp_ip4_spec.pdst,
630 fsc->fs.m_u.tcp_ip4_spec.pdst);
15682bc4
PWJ		 631 p += ETH_GSTRING_LEN;
632 num_strings++;
633 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 634 fsc->fs.h_u.tcp_ip4_spec.tos,
635 fsc->fs.m_u.tcp_ip4_spec.tos);
15682bc4
PWJ		 636 p += ETH_GSTRING_LEN;
637 num_strings++;
638 break;
639 case AH_ESP_V4_FLOW:
640 case ESP_V4_FLOW:
641 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 642 fsc->fs.h_u.ah_ip4_spec.ip4src);
15682bc4
PWJ		 643 p += ETH_GSTRING_LEN;
644 num_strings++;
645 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 646 fsc->fs.m_u.ah_ip4_spec.ip4src);
15682bc4
PWJ		 647 p += ETH_GSTRING_LEN;
648 num_strings++;
649 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 650 fsc->fs.h_u.ah_ip4_spec.ip4dst);
15682bc4
PWJ		 651 p += ETH_GSTRING_LEN;
652 num_strings++;
653 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 654 fsc->fs.m_u.ah_ip4_spec.ip4dst);
15682bc4
PWJ		 655 p += ETH_GSTRING_LEN;
656 num_strings++;
657 sprintf(p, "\tSPI: %d, mask: 0x%x\n",
97f8aefb 658 fsc->fs.h_u.ah_ip4_spec.spi,
659 fsc->fs.m_u.ah_ip4_spec.spi);
15682bc4
PWJ		 660 p += ETH_GSTRING_LEN;
661 num_strings++;
662 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 663 fsc->fs.h_u.ah_ip4_spec.tos,
664 fsc->fs.m_u.ah_ip4_spec.tos);
15682bc4
PWJ		 665 p += ETH_GSTRING_LEN;
666 num_strings++;
667 break;
668 case IP_USER_FLOW:
669 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 670 fsc->fs.h_u.raw_ip4_spec.ip4src);
15682bc4
PWJ		 671 p += ETH_GSTRING_LEN;
672 num_strings++;
673 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 674 fsc->fs.m_u.raw_ip4_spec.ip4src);
15682bc4
PWJ		 675 p += ETH_GSTRING_LEN;
676 num_strings++;
677 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 678 fsc->fs.h_u.raw_ip4_spec.ip4dst);
15682bc4
PWJ		 679 p += ETH_GSTRING_LEN;
680 num_strings++;
681 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 682 fsc->fs.m_u.raw_ip4_spec.ip4dst);
15682bc4
PWJ		 683 p += ETH_GSTRING_LEN;
684 num_strings++;
685 break;
686 case IPV4_FLOW:
687 sprintf(p, "\tSrc IP addr: 0x%x\n",
97f8aefb 688 fsc->fs.h_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 689 p += ETH_GSTRING_LEN;
690 num_strings++;
691 sprintf(p, "\tSrc IP mask: 0x%x\n",
97f8aefb 692 fsc->fs.m_u.usr_ip4_spec.ip4src);
15682bc4
PWJ		 693 p += ETH_GSTRING_LEN;
694 num_strings++;
695 sprintf(p, "\tDest IP addr: 0x%x\n",
97f8aefb 696 fsc->fs.h_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 697 p += ETH_GSTRING_LEN;
698 num_strings++;
699 sprintf(p, "\tDest IP mask: 0x%x\n",
97f8aefb 700 fsc->fs.m_u.usr_ip4_spec.ip4dst);
15682bc4
PWJ		 701 p += ETH_GSTRING_LEN;
702 num_strings++;
703 sprintf(p, "\tL4 bytes: 0x%x, mask: 0x%x\n",
97f8aefb 704 fsc->fs.h_u.usr_ip4_spec.l4_4_bytes,
705 fsc->fs.m_u.usr_ip4_spec.l4_4_bytes);
15682bc4
PWJ		 706 p += ETH_GSTRING_LEN;
707 num_strings++;
708 sprintf(p, "\tTOS: %d, mask: 0x%x\n",
97f8aefb 709 fsc->fs.h_u.usr_ip4_spec.tos,
710 fsc->fs.m_u.usr_ip4_spec.tos);
15682bc4
PWJ		 711 p += ETH_GSTRING_LEN;
712 num_strings++;
713 sprintf(p, "\tIP Version: %d, mask: 0x%x\n",
97f8aefb 714 fsc->fs.h_u.usr_ip4_spec.ip_ver,
715 fsc->fs.m_u.usr_ip4_spec.ip_ver);
15682bc4
PWJ		 716 p += ETH_GSTRING_LEN;
717 num_strings++;
718 sprintf(p, "\tProtocol: %d, mask: 0x%x\n",
97f8aefb 719 fsc->fs.h_u.usr_ip4_spec.proto,
720 fsc->fs.m_u.usr_ip4_spec.proto);
15682bc4
PWJ		 721 p += ETH_GSTRING_LEN;
722 num_strings++;
723 break;
ccbd6a5a 724 }
15682bc4 725 sprintf(p, "\tVLAN: %d, mask: 0x%x\n",
97f8aefb 726 fsc->fs.vlan_tag, fsc->fs.vlan_tag_mask);
15682bc4
PWJ		 727 p += ETH_GSTRING_LEN;
728 num_strings++;
729 sprintf(p, "\tUser-defined: 0x%Lx\n", fsc->fs.data);
730 p += ETH_GSTRING_LEN;
731 num_strings++;
732 sprintf(p, "\tUser-defined mask: 0x%Lx\n", fsc->fs.data_mask);
733 p += ETH_GSTRING_LEN;
734 num_strings++;
735 if (fsc->fs.action == ETHTOOL_RXNTUPLE_ACTION_DROP)
736 sprintf(p, "\tAction: Drop\n");
737 else
738 sprintf(p, "\tAction: Direct to queue %d\n",
97f8aefb 739 fsc->fs.action);
15682bc4
PWJ		 740 p += ETH_GSTRING_LEN;
741 num_strings++;
742unknown_filter:
743 i++;
744 }
745copy:
746 /* indicate to userspace how many strings we actually have */
747 gstrings.len = num_strings;
748 ret = -EFAULT;
749 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
750 goto out;
751 useraddr += sizeof(gstrings);
752 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
753 goto out;
754 ret = 0;
755
756out:
757 kfree(data);
758 return ret;
759}
760
1da177e4
LT		 761static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
762{
763 struct ethtool_regs regs;
76fd8593 764 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 765 void *regbuf;
766 int reglen, ret;
767
768 if (!ops->get_regs || !ops->get_regs_len)
769 return -EOPNOTSUPP;
770
771 if (copy_from_user(&regs, useraddr, sizeof(regs)))
772 return -EFAULT;
773
774 reglen = ops->get_regs_len(dev);
775 if (regs.len > reglen)
776 regs.len = reglen;
777
778 regbuf = kmalloc(reglen, GFP_USER);
779 if (!regbuf)
780 return -ENOMEM;
781
782 ops->get_regs(dev, &regs, regbuf);
783
784 ret = -EFAULT;
785 if (copy_to_user(useraddr, &regs, sizeof(regs)))
786 goto out;
787 useraddr += offsetof(struct ethtool_regs, data);
788 if (copy_to_user(useraddr, regbuf, regs.len))
789 goto out;
790 ret = 0;
791
792 out:
793 kfree(regbuf);
794 return ret;
795}
796
d73d3a8c
BH		 797static int ethtool_reset(struct net_device *dev, char __user *useraddr)
798{
799 struct ethtool_value reset;
800 int ret;
801
802 if (!dev->ethtool_ops->reset)
803 return -EOPNOTSUPP;
804
805 if (copy_from_user(&reset, useraddr, sizeof(reset)))
806 return -EFAULT;
807
808 ret = dev->ethtool_ops->reset(dev, &reset.data);
809 if (ret)
810 return ret;
811
812 if (copy_to_user(useraddr, &reset, sizeof(reset)))
813 return -EFAULT;
814 return 0;
815}
816
1da177e4
LT		 817static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
818{
8e557421 819 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 820
821 if (!dev->ethtool_ops->get_wol)
822 return -EOPNOTSUPP;
823
824 dev->ethtool_ops->get_wol(dev, &wol);
825
826 if (copy_to_user(useraddr, &wol, sizeof(wol)))
827 return -EFAULT;
828 return 0;
829}
830
831static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
832{
833 struct ethtool_wolinfo wol;
834
835 if (!dev->ethtool_ops->set_wol)
836 return -EOPNOTSUPP;
837
838 if (copy_from_user(&wol, useraddr, sizeof(wol)))
839 return -EFAULT;
840
841 return dev->ethtool_ops->set_wol(dev, &wol);
842}
843
1da177e4
LT		 844static int ethtool_nway_reset(struct net_device *dev)
845{
846 if (!dev->ethtool_ops->nway_reset)
847 return -EOPNOTSUPP;
848
849 return dev->ethtool_ops->nway_reset(dev);
850}
851
1da177e4
LT		 852static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
853{
854 struct ethtool_eeprom eeprom;
76fd8593 855 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 856 void __user *userbuf = useraddr + sizeof(eeprom);
857 u32 bytes_remaining;
1da177e4 858 u8 *data;
b131dd5d 859 int ret = 0;
1da177e4
LT		 860
861 if (!ops->get_eeprom || !ops->get_eeprom_len)
862 return -EOPNOTSUPP;
863
864 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
865 return -EFAULT;
866
867 /* Check for wrap and zero */
868 if (eeprom.offset + eeprom.len <= eeprom.offset)
869 return -EINVAL;
870
871 /* Check for exceeding total eeprom len */
872 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
873 return -EINVAL;
874
b131dd5d 875 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 876 if (!data)
877 return -ENOMEM;
878
b131dd5d
MSB		 879 bytes_remaining = eeprom.len;
880 while (bytes_remaining > 0) {
881 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
882
883 ret = ops->get_eeprom(dev, &eeprom, data);
884 if (ret)
885 break;
886 if (copy_to_user(userbuf, data, eeprom.len)) {
887 ret = -EFAULT;
888 break;
889 }
890 userbuf += eeprom.len;
891 eeprom.offset += eeprom.len;
892 bytes_remaining -= eeprom.len;
893 }
1da177e4 894
c5835df9
MSB		 895 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
896 eeprom.offset -= eeprom.len;
897 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
898 ret = -EFAULT;
899
1da177e4
LT		 900 kfree(data);
901 return ret;
902}
903
904static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
905{
906 struct ethtool_eeprom eeprom;
76fd8593 907 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 908 void __user *userbuf = useraddr + sizeof(eeprom);
909 u32 bytes_remaining;
1da177e4 910 u8 *data;
b131dd5d 911 int ret = 0;
1da177e4
LT		 912
913 if (!ops->set_eeprom || !ops->get_eeprom_len)
914 return -EOPNOTSUPP;
915
916 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
917 return -EFAULT;
918
919 /* Check for wrap and zero */
920 if (eeprom.offset + eeprom.len <= eeprom.offset)
921 return -EINVAL;
922
923 /* Check for exceeding total eeprom len */
924 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
925 return -EINVAL;
926
b131dd5d 927 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 928 if (!data)
929 return -ENOMEM;
930
b131dd5d
MSB		 931 bytes_remaining = eeprom.len;
932 while (bytes_remaining > 0) {
933 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
934
935 if (copy_from_user(data, userbuf, eeprom.len)) {
936 ret = -EFAULT;
937 break;
938 }
939 ret = ops->set_eeprom(dev, &eeprom, data);
940 if (ret)
941 break;
942 userbuf += eeprom.len;
943 eeprom.offset += eeprom.len;
944 bytes_remaining -= eeprom.len;
945 }
1da177e4 946
1da177e4
LT		 947 kfree(data);
948 return ret;
949}
950
97f8aefb 951static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
952 void __user *useraddr)
1da177e4 953{
8e557421 954 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 955
956 if (!dev->ethtool_ops->get_coalesce)
957 return -EOPNOTSUPP;
958
959 dev->ethtool_ops->get_coalesce(dev, &coalesce);
960
961 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
962 return -EFAULT;
963 return 0;
964}
965
97f8aefb 966static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
967 void __user *useraddr)
1da177e4
LT		 968{
969 struct ethtool_coalesce coalesce;
970
fa04ae5c 971 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 972 return -EOPNOTSUPP;
973
974 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
975 return -EFAULT;
976
977 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
978}
979
980static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
981{
8e557421 982 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 983
984 if (!dev->ethtool_ops->get_ringparam)
985 return -EOPNOTSUPP;
986
987 dev->ethtool_ops->get_ringparam(dev, &ringparam);
988
989 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
990 return -EFAULT;
991 return 0;
992}
993
994static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
995{
996 struct ethtool_ringparam ringparam;
997
998 if (!dev->ethtool_ops->set_ringparam)
999 return -EOPNOTSUPP;
1000
1001 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1002 return -EFAULT;
1003
1004 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1005}
1006
1007static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1008{
1009 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1010
1011 if (!dev->ethtool_ops->get_pauseparam)
1012 return -EOPNOTSUPP;
1013
1014 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1015
1016 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1017 return -EFAULT;
1018 return 0;
1019}
1020
1021static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1022{
1023 struct ethtool_pauseparam pauseparam;
1024
e1b90c41 1025 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1026 return -EOPNOTSUPP;
1027
1028 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1029 return -EFAULT;
1030
1031 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1032}
1033
1da177e4
LT		 1034static int __ethtool_set_sg(struct net_device *dev, u32 data)
1035{
1036 int err;
1037
1038 if (!data && dev->ethtool_ops->set_tso) {
1039 err = dev->ethtool_ops->set_tso(dev, 0);
1040 if (err)
1041 return err;
1042 }
1043
e89e9cf5
AR		 1044 if (!data && dev->ethtool_ops->set_ufo) {
1045 err = dev->ethtool_ops->set_ufo(dev, 0);
1046 if (err)
1047 return err;
1048 }
1da177e4
LT		 1049 return dev->ethtool_ops->set_sg(dev, data);
1050}
1051
1052static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
1053{
1054 struct ethtool_value edata;
1055 int err;
1056
1057 if (!dev->ethtool_ops->set_tx_csum)
1058 return -EOPNOTSUPP;
1059
1060 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1061 return -EFAULT;
1062
1063 if (!edata.data && dev->ethtool_ops->set_sg) {
1064 err = __ethtool_set_sg(dev, 0);
1065 if (err)
1066 return err;
1067 }
1068
1069 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
1070}
97f8aefb 1071EXPORT_SYMBOL(ethtool_op_set_tx_csum);
1da177e4 1072
b240a0e5
HX		 1073static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
1074{
1075 struct ethtool_value edata;
1076
1077 if (!dev->ethtool_ops->set_rx_csum)
1078 return -EOPNOTSUPP;
1079
1080 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1081 return -EFAULT;
1082
1083 if (!edata.data && dev->ethtool_ops->set_sg)
1084 dev->features &= ~NETIF_F_GRO;
1085
1086 return dev->ethtool_ops->set_rx_csum(dev, edata.data);
1087}
1088
1da177e4
LT		 1089static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
1090{
1091 struct ethtool_value edata;
1092
1093 if (!dev->ethtool_ops->set_sg)
1094 return -EOPNOTSUPP;
1095
1096 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1097 return -EFAULT;
1098
4ec93edb 1099 if (edata.data &&
8648b305 1100 !(dev->features & NETIF_F_ALL_CSUM))
1da177e4
LT		 1101 return -EINVAL;
1102
1103 return __ethtool_set_sg(dev, edata.data);
1104}
1105
1da177e4
LT		 1106static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
1107{
1108 struct ethtool_value edata;
1109
1110 if (!dev->ethtool_ops->set_tso)
1111 return -EOPNOTSUPP;
1112
1113 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1114 return -EFAULT;
1115
1116 if (edata.data && !(dev->features & NETIF_F_SG))
1117 return -EINVAL;
1118
1119 return dev->ethtool_ops->set_tso(dev, edata.data);
1120}
1121
e89e9cf5
AR		 1122static int ethtool_set_ufo(struct net_device *dev, char __user *useraddr)
1123{
1124 struct ethtool_value edata;
1125
1126 if (!dev->ethtool_ops->set_ufo)
1127 return -EOPNOTSUPP;
1128 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1129 return -EFAULT;
1130 if (edata.data && !(dev->features & NETIF_F_SG))
1131 return -EINVAL;
1132 if (edata.data && !(dev->features & NETIF_F_HW_CSUM))
1133 return -EINVAL;
1134 return dev->ethtool_ops->set_ufo(dev, edata.data);
1135}
1136
37c3185a
HX		 1137static int ethtool_get_gso(struct net_device *dev, char __user *useraddr)
1138{
1139 struct ethtool_value edata = { ETHTOOL_GGSO };
1140
1141 edata.data = dev->features & NETIF_F_GSO;
1142 if (copy_to_user(useraddr, &edata, sizeof(edata)))
97f8aefb 1143 return -EFAULT;
37c3185a
HX		 1144 return 0;
1145}
1146
1147static int ethtool_set_gso(struct net_device *dev, char __user *useraddr)
1148{
1149 struct ethtool_value edata;
1150
1151 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1152 return -EFAULT;
1153 if (edata.data)
1154 dev->features |= NETIF_F_GSO;
1155 else
1156 dev->features &= ~NETIF_F_GSO;
1157 return 0;
1158}
1159
b240a0e5
HX		 1160static int ethtool_get_gro(struct net_device *dev, char __user *useraddr)
1161{
1162 struct ethtool_value edata = { ETHTOOL_GGRO };
1163
1164 edata.data = dev->features & NETIF_F_GRO;
1165 if (copy_to_user(useraddr, &edata, sizeof(edata)))
97f8aefb 1166 return -EFAULT;
b240a0e5
HX		 1167 return 0;
1168}
1169
1170static int ethtool_set_gro(struct net_device *dev, char __user *useraddr)
1171{
1172 struct ethtool_value edata;
1173
1174 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1175 return -EFAULT;
1176
1177 if (edata.data) {
1178 if (!dev->ethtool_ops->get_rx_csum ||
1179 !dev->ethtool_ops->get_rx_csum(dev))
1180 return -EINVAL;
1181 dev->features |= NETIF_F_GRO;
1182 } else
1183 dev->features &= ~NETIF_F_GRO;
1184
1185 return 0;
1186}
1187
1da177e4
LT		 1188static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1189{
1190 struct ethtool_test test;
76fd8593 1191 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1192 u64 *data;
ff03d49f 1193 int ret, test_len;
1da177e4 1194
a9828ec6 1195 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1196 return -EOPNOTSUPP;
1197
a9828ec6 1198 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1199 if (test_len < 0)
1200 return test_len;
1201 WARN_ON(test_len == 0);
1202
1da177e4
LT		 1203 if (copy_from_user(&test, useraddr, sizeof(test)))
1204 return -EFAULT;
1205
ff03d49f
JG		 1206 test.len = test_len;
1207 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1208 if (!data)
1209 return -ENOMEM;
1210
1211 ops->self_test(dev, &test, data);
1212
1213 ret = -EFAULT;
1214 if (copy_to_user(useraddr, &test, sizeof(test)))
1215 goto out;
1216 useraddr += sizeof(test);
1217 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1218 goto out;
1219 ret = 0;
1220
1221 out:
1222 kfree(data);
1223 return ret;
1224}
1225
1226static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1227{
1228 struct ethtool_gstrings gstrings;
76fd8593 1229 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1230 u8 *data;
1231 int ret;
1232
a9828ec6 1233 if (!ops->get_strings || !ops->get_sset_count)
1da177e4
LT		 1234 return -EOPNOTSUPP;
1235
1236 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1237 return -EFAULT;
1238
a9828ec6
BH		 1239 ret = ops->get_sset_count(dev, gstrings.string_set);
1240 if (ret < 0)
1241 return ret;
1242
1243 gstrings.len = ret;
1da177e4
LT		 1244
1245 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1246 if (!data)
1247 return -ENOMEM;
1248
1249 ops->get_strings(dev, gstrings.string_set, data);
1250
1251 ret = -EFAULT;
1252 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1253 goto out;
1254 useraddr += sizeof(gstrings);
1255 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1256 goto out;
1257 ret = 0;
1258
1259 out:
1260 kfree(data);
1261 return ret;
1262}
1263
1264static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1265{
1266 struct ethtool_value id;
1267
1268 if (!dev->ethtool_ops->phys_id)
1269 return -EOPNOTSUPP;
1270
1271 if (copy_from_user(&id, useraddr, sizeof(id)))
1272 return -EFAULT;
1273
1274 return dev->ethtool_ops->phys_id(dev, id.data);
1275}
1276
1277static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1278{
1279 struct ethtool_stats stats;
76fd8593 1280 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1281 u64 *data;
ff03d49f 1282 int ret, n_stats;
1da177e4 1283
a9828ec6 1284 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1285 return -EOPNOTSUPP;
1286
a9828ec6 1287 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1288 if (n_stats < 0)
1289 return n_stats;
1290 WARN_ON(n_stats == 0);
1291
1da177e4
LT		 1292 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1293 return -EFAULT;
1294
ff03d49f
JG		 1295 stats.n_stats = n_stats;
1296 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1da177e4
LT		 1297 if (!data)
1298 return -ENOMEM;
1299
1300 ops->get_ethtool_stats(dev, &stats, data);
1301
1302 ret = -EFAULT;
1303 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1304 goto out;
1305 useraddr += sizeof(stats);
1306 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1307 goto out;
1308 ret = 0;
1309
1310 out:
1311 kfree(data);
1312 return ret;
1313}
1314
0bf0519d 1315static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1316{
1317 struct ethtool_perm_addr epaddr;
a6f9a705 1318
313674af 1319 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 1320 return -EFAULT;
1321
313674af
MW		 1322 if (epaddr.size < dev->addr_len)
1323 return -ETOOSMALL;
1324 epaddr.size = dev->addr_len;
a6f9a705 1325
a6f9a705 1326 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 1327 return -EFAULT;
a6f9a705 1328 useraddr += sizeof(epaddr);
313674af
MW		 1329 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1330 return -EFAULT;
1331 return 0;
a6f9a705
JW		 1332}
1333
13c99b24
JG		 1334static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1335 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 1336{
8e557421 1337 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 1338
13c99b24 1339 if (!actor)
3ae7c0b2
JG		 1340 return -EOPNOTSUPP;
1341
13c99b24 1342 edata.data = actor(dev);
3ae7c0b2
JG		 1343
1344 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1345 return -EFAULT;
1346 return 0;
1347}
1348
13c99b24
JG		 1349static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1350 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 1351{
1352 struct ethtool_value edata;
1353
13c99b24 1354 if (!actor)
3ae7c0b2
JG		 1355 return -EOPNOTSUPP;
1356
1357 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1358 return -EFAULT;
1359
13c99b24 1360 actor(dev, edata.data);
339bf024
JG		 1361 return 0;
1362}
1363
13c99b24
JG		 1364static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1365 int (*actor)(struct net_device *, u32))
339bf024
JG		 1366{
1367 struct ethtool_value edata;
1368
13c99b24 1369 if (!actor)
339bf024
JG		 1370 return -EOPNOTSUPP;
1371
1372 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1373 return -EFAULT;
1374
13c99b24 1375 return actor(dev, edata.data);
339bf024
JG		 1376}
1377
97f8aefb 1378static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1379 char __user *useraddr)
05c6a8d7
AK		 1380{
1381 struct ethtool_flash efl;
1382
1383 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1384 return -EFAULT;
1385
1386 if (!dev->ethtool_ops->flash_device)
1387 return -EOPNOTSUPP;
1388
1389 return dev->ethtool_ops->flash_device(dev, &efl);
1390}
1391
1da177e4
LT		 1392/* The main entry point in this file. Called from net/core/dev.c */
1393
881d966b 1394int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 1395{
881d966b 1396 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4
LT		 1397 void __user *useraddr = ifr->ifr_data;
1398 u32 ethcmd;
1399 int rc;
81e81575 1400 unsigned long old_features;
1da177e4 1401
1da177e4
LT		 1402 if (!dev || !netif_device_present(dev))
1403 return -ENODEV;
1404
1405 if (!dev->ethtool_ops)
61a44b9c 1406 return -EOPNOTSUPP;
1da177e4 1407
97f8aefb 1408 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 1409 return -EFAULT;
1410
75f3123c 1411 /* Allow some commands to be done by anyone */
97f8aefb 1412 switch (ethcmd) {
75f3123c 1413 case ETHTOOL_GDRVINFO:
75f3123c 1414 case ETHTOOL_GMSGLVL:
75f3123c
SH		 1415 case ETHTOOL_GCOALESCE:
1416 case ETHTOOL_GRINGPARAM:
1417 case ETHTOOL_GPAUSEPARAM:
1418 case ETHTOOL_GRXCSUM:
1419 case ETHTOOL_GTXCSUM:
1420 case ETHTOOL_GSG:
1421 case ETHTOOL_GSTRINGS:
75f3123c
SH		 1422 case ETHTOOL_GTSO:
1423 case ETHTOOL_GPERMADDR:
1424 case ETHTOOL_GUFO:
1425 case ETHTOOL_GGSO:
1cab819b 1426 case ETHTOOL_GGRO:
339bf024
JG		 1427 case ETHTOOL_GFLAGS:
1428 case ETHTOOL_GPFLAGS:
0853ad66 1429 case ETHTOOL_GRXFH:
59089d8d
SB		 1430 case ETHTOOL_GRXRINGS:
1431 case ETHTOOL_GRXCLSRLCNT:
1432 case ETHTOOL_GRXCLSRULE:
1433 case ETHTOOL_GRXCLSRLALL:
75f3123c
SH		 1434 break;
1435 default:
1436 if (!capable(CAP_NET_ADMIN))
1437 return -EPERM;
1438 }
1439
97f8aefb 1440 if (dev->ethtool_ops->begin) {
1441 rc = dev->ethtool_ops->begin(dev);
1442 if (rc < 0)
1da177e4 1443 return rc;
97f8aefb 1444 }
d8a33ac4
SH		 1445 old_features = dev->features;
1446
1da177e4
LT		 1447 switch (ethcmd) {
1448 case ETHTOOL_GSET:
1449 rc = ethtool_get_settings(dev, useraddr);
1450 break;
1451 case ETHTOOL_SSET:
1452 rc = ethtool_set_settings(dev, useraddr);
1453 break;
1454 case ETHTOOL_GDRVINFO:
1455 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 1456 break;
1457 case ETHTOOL_GREGS:
1458 rc = ethtool_get_regs(dev, useraddr);
1459 break;
1460 case ETHTOOL_GWOL:
1461 rc = ethtool_get_wol(dev, useraddr);
1462 break;
1463 case ETHTOOL_SWOL:
1464 rc = ethtool_set_wol(dev, useraddr);
1465 break;
1466 case ETHTOOL_GMSGLVL:
13c99b24
JG		 1467 rc = ethtool_get_value(dev, useraddr, ethcmd,
1468 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 1469 break;
1470 case ETHTOOL_SMSGLVL:
13c99b24
JG		 1471 rc = ethtool_set_value_void(dev, useraddr,
1472 dev->ethtool_ops->set_msglevel);
1da177e4
LT		 1473 break;
1474 case ETHTOOL_NWAY_RST:
1475 rc = ethtool_nway_reset(dev);
1476 break;
1477 case ETHTOOL_GLINK:
13c99b24
JG		 1478 rc = ethtool_get_value(dev, useraddr, ethcmd,
1479 dev->ethtool_ops->get_link);
1da177e4
LT		 1480 break;
1481 case ETHTOOL_GEEPROM:
1482 rc = ethtool_get_eeprom(dev, useraddr);
1483 break;
1484 case ETHTOOL_SEEPROM:
1485 rc = ethtool_set_eeprom(dev, useraddr);
1486 break;
1487 case ETHTOOL_GCOALESCE:
1488 rc = ethtool_get_coalesce(dev, useraddr);
1489 break;
1490 case ETHTOOL_SCOALESCE:
1491 rc = ethtool_set_coalesce(dev, useraddr);
1492 break;
1493 case ETHTOOL_GRINGPARAM:
1494 rc = ethtool_get_ringparam(dev, useraddr);
1495 break;
1496 case ETHTOOL_SRINGPARAM:
1497 rc = ethtool_set_ringparam(dev, useraddr);
1498 break;
1499 case ETHTOOL_GPAUSEPARAM:
1500 rc = ethtool_get_pauseparam(dev, useraddr);
1501 break;
1502 case ETHTOOL_SPAUSEPARAM:
1503 rc = ethtool_set_pauseparam(dev, useraddr);
1504 break;
1505 case ETHTOOL_GRXCSUM:
13c99b24 1506 rc = ethtool_get_value(dev, useraddr, ethcmd,
1896e61f
SS		 1507 (dev->ethtool_ops->get_rx_csum ?
1508 dev->ethtool_ops->get_rx_csum :
1509 ethtool_op_get_rx_csum));
1da177e4
LT		 1510 break;
1511 case ETHTOOL_SRXCSUM:
b240a0e5 1512 rc = ethtool_set_rx_csum(dev, useraddr);
1da177e4
LT		 1513 break;
1514 case ETHTOOL_GTXCSUM:
13c99b24 1515 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1516 (dev->ethtool_ops->get_tx_csum ?
1517 dev->ethtool_ops->get_tx_csum :
1518 ethtool_op_get_tx_csum));
1da177e4
LT		 1519 break;
1520 case ETHTOOL_STXCSUM:
1521 rc = ethtool_set_tx_csum(dev, useraddr);
1522 break;
1523 case ETHTOOL_GSG:
13c99b24 1524 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1525 (dev->ethtool_ops->get_sg ?
1526 dev->ethtool_ops->get_sg :
1527 ethtool_op_get_sg));
1da177e4
LT		 1528 break;
1529 case ETHTOOL_SSG:
1530 rc = ethtool_set_sg(dev, useraddr);
1531 break;
1532 case ETHTOOL_GTSO:
13c99b24 1533 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1534 (dev->ethtool_ops->get_tso ?
1535 dev->ethtool_ops->get_tso :
1536 ethtool_op_get_tso));
1da177e4
LT		 1537 break;
1538 case ETHTOOL_STSO:
1539 rc = ethtool_set_tso(dev, useraddr);
1540 break;
1541 case ETHTOOL_TEST:
1542 rc = ethtool_self_test(dev, useraddr);
1543 break;
1544 case ETHTOOL_GSTRINGS:
1545 rc = ethtool_get_strings(dev, useraddr);
1546 break;
1547 case ETHTOOL_PHYS_ID:
1548 rc = ethtool_phys_id(dev, useraddr);
1549 break;
1550 case ETHTOOL_GSTATS:
1551 rc = ethtool_get_stats(dev, useraddr);
1552 break;
a6f9a705
JW		 1553 case ETHTOOL_GPERMADDR:
1554 rc = ethtool_get_perm_addr(dev, useraddr);
1555 break;
e89e9cf5 1556 case ETHTOOL_GUFO:
13c99b24 1557 rc = ethtool_get_value(dev, useraddr, ethcmd,
88d3aafd
JG		 1558 (dev->ethtool_ops->get_ufo ?
1559 dev->ethtool_ops->get_ufo :
1560 ethtool_op_get_ufo));
e89e9cf5
AR		 1561 break;
1562 case ETHTOOL_SUFO:
1563 rc = ethtool_set_ufo(dev, useraddr);
1564 break;
37c3185a
HX		 1565 case ETHTOOL_GGSO:
1566 rc = ethtool_get_gso(dev, useraddr);
1567 break;
1568 case ETHTOOL_SGSO:
1569 rc = ethtool_set_gso(dev, useraddr);
1570 break;
3ae7c0b2 1571 case ETHTOOL_GFLAGS:
13c99b24 1572 rc = ethtool_get_value(dev, useraddr, ethcmd,
1896e61f
SS		 1573 (dev->ethtool_ops->get_flags ?
1574 dev->ethtool_ops->get_flags :
1575 ethtool_op_get_flags));
3ae7c0b2
JG		 1576 break;
1577 case ETHTOOL_SFLAGS:
13c99b24
JG		 1578 rc = ethtool_set_value(dev, useraddr,
1579 dev->ethtool_ops->set_flags);
3ae7c0b2 1580 break;
339bf024 1581 case ETHTOOL_GPFLAGS:
13c99b24
JG		 1582 rc = ethtool_get_value(dev, useraddr, ethcmd,
1583 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 1584 break;
1585 case ETHTOOL_SPFLAGS:
13c99b24
JG		 1586 rc = ethtool_set_value(dev, useraddr,
1587 dev->ethtool_ops->set_priv_flags);
339bf024 1588 break;
0853ad66 1589 case ETHTOOL_GRXFH:
59089d8d
SB		 1590 case ETHTOOL_GRXRINGS:
1591 case ETHTOOL_GRXCLSRLCNT:
1592 case ETHTOOL_GRXCLSRULE:
1593 case ETHTOOL_GRXCLSRLALL:
bf988435 1594 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 1595 break;
1596 case ETHTOOL_SRXFH:
59089d8d
SB		 1597 case ETHTOOL_SRXCLSRLDEL:
1598 case ETHTOOL_SRXCLSRLINS:
bf988435 1599 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 1600 break;
b240a0e5
HX		 1601 case ETHTOOL_GGRO:
1602 rc = ethtool_get_gro(dev, useraddr);
1603 break;
1604 case ETHTOOL_SGRO:
1605 rc = ethtool_set_gro(dev, useraddr);
1606 break;
05c6a8d7
AK		 1607 case ETHTOOL_FLASHDEV:
1608 rc = ethtool_flash_device(dev, useraddr);
1609 break;
d73d3a8c
BH		 1610 case ETHTOOL_RESET:
1611 rc = ethtool_reset(dev, useraddr);
1612 break;
15682bc4
PWJ		 1613 case ETHTOOL_SRXNTUPLE:
1614 rc = ethtool_set_rx_ntuple(dev, useraddr);
1615 break;
1616 case ETHTOOL_GRXNTUPLE:
1617 rc = ethtool_get_rx_ntuple(dev, useraddr);
1618 break;
723b2f57
JG		 1619 case ETHTOOL_GSSET_INFO:
1620 rc = ethtool_get_sset_info(dev, useraddr);
1621 break;
a5b6ee29
BH		 1622 case ETHTOOL_GRXFHINDIR:
1623 rc = ethtool_get_rxfh_indir(dev, useraddr);
1624 break;
1625 case ETHTOOL_SRXFHINDIR:
1626 rc = ethtool_set_rxfh_indir(dev, useraddr);
1627 break;
1da177e4 1628 default:
61a44b9c 1629 rc = -EOPNOTSUPP;
1da177e4 1630 }
4ec93edb 1631
e71a4783 1632 if (dev->ethtool_ops->complete)
1da177e4 1633 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 1634
1635 if (old_features != dev->features)
1636 netdev_features_change(dev);
1637
1da177e4 1638 return rc;
1da177e4 1639}
Clone of davem's net-next-2.6 tree