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Merge tag 'batman-adv-for-davem' of git://git.open-mesh.org/linux-merge
[linux-2.6/btrfs-unstable.git] / net / core / ethtool.c
blobd9d55209db679ba4e0e16789a9a988e147fd1022
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
6 * the information ethtool needs.
7 *
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.
12 */
13
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/capability.h>
17 #include <linux/errno.h>
18 #include <linux/ethtool.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/bitops.h>
23 #include <linux/uaccess.h>
24 #include <linux/vmalloc.h>
25 #include <linux/slab.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/sched.h>
28
29 /*
30 * Some useful ethtool_ops methods that're device independent.
31 * If we find that all drivers want to do the same thing here,
32 * we can turn these into dev_() function calls.
33 */
34
35 u32 ethtool_op_get_link(struct net_device *dev)
36 {
37 return netif_carrier_ok(dev) ? 1 : 0;
38 }
39 EXPORT_SYMBOL(ethtool_op_get_link);
40
41 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
42 {
43 info->so_timestamping =
44 SOF_TIMESTAMPING_TX_SOFTWARE |
45 SOF_TIMESTAMPING_RX_SOFTWARE |
46 SOF_TIMESTAMPING_SOFTWARE;
47 info->phc_index = -1;
48 return 0;
49 }
50 EXPORT_SYMBOL(ethtool_op_get_ts_info);
51
52 /* Handlers for each ethtool command */
53
54 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
55
56 static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
57 [NETIF_F_SG_BIT] = "tx-scatter-gather",
58 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
59 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
60 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
61 [NETIF_F_HIGHDMA_BIT] = "highdma",
62 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
63 [NETIF_F_HW_VLAN_TX_BIT] = "tx-vlan-hw-insert",
64
65 [NETIF_F_HW_VLAN_RX_BIT] = "rx-vlan-hw-parse",
66 [NETIF_F_HW_VLAN_FILTER_BIT] = "rx-vlan-filter",
67 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
68 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
69 [NETIF_F_LLTX_BIT] = "tx-lockless",
70 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
71 [NETIF_F_GRO_BIT] = "rx-gro",
72 [NETIF_F_LRO_BIT] = "rx-lro",
73
74 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
75 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
76 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
77 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
78 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
79 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
80
81 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
82 [NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",
83 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
84 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
85 [NETIF_F_RXHASH_BIT] = "rx-hashing",
86 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
87 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
88 [NETIF_F_LOOPBACK_BIT] = "loopback",
89 [NETIF_F_RXFCS_BIT] = "rx-fcs",
90 [NETIF_F_RXALL_BIT] = "rx-all",
91 };
92
93 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
94 {
95 struct ethtool_gfeatures cmd = {
96 .cmd = ETHTOOL_GFEATURES,
97 .size = ETHTOOL_DEV_FEATURE_WORDS,
98 };
99 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
100 u32 __user *sizeaddr;
101 u32 copy_size;
102 int i;
103
104 /* in case feature bits run out again */
105 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
106
107 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
108 features[i].available = (u32)(dev->hw_features >> (32 * i));
109 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
110 features[i].active = (u32)(dev->features >> (32 * i));
111 features[i].never_changed =
112 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
113 }
114
115 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
116 if (get_user(copy_size, sizeaddr))
117 return -EFAULT;
118
119 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
120 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
121
122 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
123 return -EFAULT;
124 useraddr += sizeof(cmd);
125 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
126 return -EFAULT;
127
128 return 0;
129 }
130
131 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
132 {
133 struct ethtool_sfeatures cmd;
134 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
135 netdev_features_t wanted = 0, valid = 0;
136 int i, ret = 0;
137
138 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
139 return -EFAULT;
140 useraddr += sizeof(cmd);
141
142 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
143 return -EINVAL;
144
145 if (copy_from_user(features, useraddr, sizeof(features)))
146 return -EFAULT;
147
148 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
149 valid |= (netdev_features_t)features[i].valid << (32 * i);
150 wanted |= (netdev_features_t)features[i].requested << (32 * i);
151 }
152
153 if (valid & ~NETIF_F_ETHTOOL_BITS)
154 return -EINVAL;
155
156 if (valid & ~dev->hw_features) {
157 valid &= dev->hw_features;
158 ret |= ETHTOOL_F_UNSUPPORTED;
159 }
160
161 dev->wanted_features &= ~valid;
162 dev->wanted_features |= wanted & valid;
163 __netdev_update_features(dev);
164
165 if ((dev->wanted_features ^ dev->features) & valid)
166 ret |= ETHTOOL_F_WISH;
167
168 return ret;
169 }
170
171 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
172 {
173 const struct ethtool_ops *ops = dev->ethtool_ops;
174
175 if (sset == ETH_SS_FEATURES)
176 return ARRAY_SIZE(netdev_features_strings);
177
178 if (ops->get_sset_count && ops->get_strings)
179 return ops->get_sset_count(dev, sset);
180 else
181 return -EOPNOTSUPP;
182 }
183
184 static void __ethtool_get_strings(struct net_device *dev,
185 u32 stringset, u8 *data)
186 {
187 const struct ethtool_ops *ops = dev->ethtool_ops;
188
189 if (stringset == ETH_SS_FEATURES)
190 memcpy(data, netdev_features_strings,
191 sizeof(netdev_features_strings));
192 else
193 /* ops->get_strings is valid because checked earlier */
194 ops->get_strings(dev, stringset, data);
195 }
196
197 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
198 {
199 /* feature masks of legacy discrete ethtool ops */
200
201 switch (eth_cmd) {
202 case ETHTOOL_GTXCSUM:
203 case ETHTOOL_STXCSUM:
204 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
205 case ETHTOOL_GRXCSUM:
206 case ETHTOOL_SRXCSUM:
207 return NETIF_F_RXCSUM;
208 case ETHTOOL_GSG:
209 case ETHTOOL_SSG:
210 return NETIF_F_SG;
211 case ETHTOOL_GTSO:
212 case ETHTOOL_STSO:
213 return NETIF_F_ALL_TSO;
214 case ETHTOOL_GUFO:
215 case ETHTOOL_SUFO:
216 return NETIF_F_UFO;
217 case ETHTOOL_GGSO:
218 case ETHTOOL_SGSO:
219 return NETIF_F_GSO;
220 case ETHTOOL_GGRO:
221 case ETHTOOL_SGRO:
222 return NETIF_F_GRO;
223 default:
224 BUG();
225 }
226 }
227
228 static int ethtool_get_one_feature(struct net_device *dev,
229 char __user *useraddr, u32 ethcmd)
230 {
231 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
232 struct ethtool_value edata = {
233 .cmd = ethcmd,
234 .data = !!(dev->features & mask),
235 };
236
237 if (copy_to_user(useraddr, &edata, sizeof(edata)))
238 return -EFAULT;
239 return 0;
240 }
241
242 static int ethtool_set_one_feature(struct net_device *dev,
243 void __user *useraddr, u32 ethcmd)
244 {
245 struct ethtool_value edata;
246 netdev_features_t mask;
247
248 if (copy_from_user(&edata, useraddr, sizeof(edata)))
249 return -EFAULT;
250
251 mask = ethtool_get_feature_mask(ethcmd);
252 mask &= dev->hw_features;
253 if (!mask)
254 return -EOPNOTSUPP;
255
256 if (edata.data)
257 dev->wanted_features |= mask;
258 else
259 dev->wanted_features &= ~mask;
260
261 __netdev_update_features(dev);
262
263 return 0;
264 }
265
266 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
267 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
268 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_RX | \
269 NETIF_F_HW_VLAN_TX | NETIF_F_NTUPLE | NETIF_F_RXHASH)
270
271 static u32 __ethtool_get_flags(struct net_device *dev)
272 {
273 u32 flags = 0;
274
275 if (dev->features & NETIF_F_LRO) flags |= ETH_FLAG_LRO;
276 if (dev->features & NETIF_F_HW_VLAN_RX) flags |= ETH_FLAG_RXVLAN;
277 if (dev->features & NETIF_F_HW_VLAN_TX) flags |= ETH_FLAG_TXVLAN;
278 if (dev->features & NETIF_F_NTUPLE) flags |= ETH_FLAG_NTUPLE;
279 if (dev->features & NETIF_F_RXHASH) flags |= ETH_FLAG_RXHASH;
280
281 return flags;
282 }
283
284 static int __ethtool_set_flags(struct net_device *dev, u32 data)
285 {
286 netdev_features_t features = 0, changed;
287
288 if (data & ~ETH_ALL_FLAGS)
289 return -EINVAL;
290
291 if (data & ETH_FLAG_LRO) features |= NETIF_F_LRO;
292 if (data & ETH_FLAG_RXVLAN) features |= NETIF_F_HW_VLAN_RX;
293 if (data & ETH_FLAG_TXVLAN) features |= NETIF_F_HW_VLAN_TX;
294 if (data & ETH_FLAG_NTUPLE) features |= NETIF_F_NTUPLE;
295 if (data & ETH_FLAG_RXHASH) features |= NETIF_F_RXHASH;
296
297 /* allow changing only bits set in hw_features */
298 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
299 if (changed & ~dev->hw_features)
300 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
301
302 dev->wanted_features =
303 (dev->wanted_features & ~changed) | (features & changed);
304
305 __netdev_update_features(dev);
306
307 return 0;
308 }
309
310 int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
311 {
312 ASSERT_RTNL();
313
314 if (!dev->ethtool_ops->get_settings)
315 return -EOPNOTSUPP;
316
317 memset(cmd, 0, sizeof(struct ethtool_cmd));
318 cmd->cmd = ETHTOOL_GSET;
319 return dev->ethtool_ops->get_settings(dev, cmd);
320 }
321 EXPORT_SYMBOL(__ethtool_get_settings);
322
323 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
324 {
325 int err;
326 struct ethtool_cmd cmd;
327
328 err = __ethtool_get_settings(dev, &cmd);
329 if (err < 0)
330 return err;
331
332 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
333 return -EFAULT;
334 return 0;
335 }
336
337 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
338 {
339 struct ethtool_cmd cmd;
340
341 if (!dev->ethtool_ops->set_settings)
342 return -EOPNOTSUPP;
343
344 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
345 return -EFAULT;
346
347 return dev->ethtool_ops->set_settings(dev, &cmd);
348 }
349
350 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
351 void __user *useraddr)
352 {
353 struct ethtool_drvinfo info;
354 const struct ethtool_ops *ops = dev->ethtool_ops;
355
356 memset(&info, 0, sizeof(info));
357 info.cmd = ETHTOOL_GDRVINFO;
358 if (ops->get_drvinfo) {
359 ops->get_drvinfo(dev, &info);
360 } else if (dev->dev.parent && dev->dev.parent->driver) {
361 strlcpy(info.bus_info, dev_name(dev->dev.parent),
362 sizeof(info.bus_info));
363 strlcpy(info.driver, dev->dev.parent->driver->name,
364 sizeof(info.driver));
365 } else {
366 return -EOPNOTSUPP;
367 }
368
369 /*
370 * this method of obtaining string set info is deprecated;
371 * Use ETHTOOL_GSSET_INFO instead.
372 */
373 if (ops->get_sset_count) {
374 int rc;
375
376 rc = ops->get_sset_count(dev, ETH_SS_TEST);
377 if (rc >= 0)
378 info.testinfo_len = rc;
379 rc = ops->get_sset_count(dev, ETH_SS_STATS);
380 if (rc >= 0)
381 info.n_stats = rc;
382 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
383 if (rc >= 0)
384 info.n_priv_flags = rc;
385 }
386 if (ops->get_regs_len)
387 info.regdump_len = ops->get_regs_len(dev);
388 if (ops->get_eeprom_len)
389 info.eedump_len = ops->get_eeprom_len(dev);
390
391 if (copy_to_user(useraddr, &info, sizeof(info)))
392 return -EFAULT;
393 return 0;
394 }
395
396 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
397 void __user *useraddr)
398 {
399 struct ethtool_sset_info info;
400 u64 sset_mask;
401 int i, idx = 0, n_bits = 0, ret, rc;
402 u32 *info_buf = NULL;
403
404 if (copy_from_user(&info, useraddr, sizeof(info)))
405 return -EFAULT;
406
407 /* store copy of mask, because we zero struct later on */
408 sset_mask = info.sset_mask;
409 if (!sset_mask)
410 return 0;
411
412 /* calculate size of return buffer */
413 n_bits = hweight64(sset_mask);
414
415 memset(&info, 0, sizeof(info));
416 info.cmd = ETHTOOL_GSSET_INFO;
417
418 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
419 if (!info_buf)
420 return -ENOMEM;
421
422 /*
423 * fill return buffer based on input bitmask and successful
424 * get_sset_count return
425 */
426 for (i = 0; i < 64; i++) {
427 if (!(sset_mask & (1ULL << i)))
428 continue;
429
430 rc = __ethtool_get_sset_count(dev, i);
431 if (rc >= 0) {
432 info.sset_mask |= (1ULL << i);
433 info_buf[idx++] = rc;
434 }
435 }
436
437 ret = -EFAULT;
438 if (copy_to_user(useraddr, &info, sizeof(info)))
439 goto out;
440
441 useraddr += offsetof(struct ethtool_sset_info, data);
442 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
443 goto out;
444
445 ret = 0;
446
447 out:
448 kfree(info_buf);
449 return ret;
450 }
451
452 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
453 u32 cmd, void __user *useraddr)
454 {
455 struct ethtool_rxnfc info;
456 size_t info_size = sizeof(info);
457 int rc;
458
459 if (!dev->ethtool_ops->set_rxnfc)
460 return -EOPNOTSUPP;
461
462 /* struct ethtool_rxnfc was originally defined for
463 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
464 * members. User-space might still be using that
465 * definition. */
466 if (cmd == ETHTOOL_SRXFH)
467 info_size = (offsetof(struct ethtool_rxnfc, data) +
468 sizeof(info.data));
469
470 if (copy_from_user(&info, useraddr, info_size))
471 return -EFAULT;
472
473 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
474 if (rc)
475 return rc;
476
477 if (cmd == ETHTOOL_SRXCLSRLINS &&
478 copy_to_user(useraddr, &info, info_size))
479 return -EFAULT;
480
481 return 0;
482 }
483
484 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
485 u32 cmd, void __user *useraddr)
486 {
487 struct ethtool_rxnfc info;
488 size_t info_size = sizeof(info);
489 const struct ethtool_ops *ops = dev->ethtool_ops;
490 int ret;
491 void *rule_buf = NULL;
492
493 if (!ops->get_rxnfc)
494 return -EOPNOTSUPP;
495
496 /* struct ethtool_rxnfc was originally defined for
497 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
498 * members. User-space might still be using that
499 * definition. */
500 if (cmd == ETHTOOL_GRXFH)
501 info_size = (offsetof(struct ethtool_rxnfc, data) +
502 sizeof(info.data));
503
504 if (copy_from_user(&info, useraddr, info_size))
505 return -EFAULT;
506
507 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
508 if (info.rule_cnt > 0) {
509 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
510 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
511 GFP_USER);
512 if (!rule_buf)
513 return -ENOMEM;
514 }
515 }
516
517 ret = ops->get_rxnfc(dev, &info, rule_buf);
518 if (ret < 0)
519 goto err_out;
520
521 ret = -EFAULT;
522 if (copy_to_user(useraddr, &info, info_size))
523 goto err_out;
524
525 if (rule_buf) {
526 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
527 if (copy_to_user(useraddr, rule_buf,
528 info.rule_cnt * sizeof(u32)))
529 goto err_out;
530 }
531 ret = 0;
532
533 err_out:
534 kfree(rule_buf);
535
536 return ret;
537 }
538
539 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
540 void __user *useraddr)
541 {
542 u32 user_size, dev_size;
543 u32 *indir;
544 int ret;
545
546 if (!dev->ethtool_ops->get_rxfh_indir_size ||
547 !dev->ethtool_ops->get_rxfh_indir)
548 return -EOPNOTSUPP;
549 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
550 if (dev_size == 0)
551 return -EOPNOTSUPP;
552
553 if (copy_from_user(&user_size,
554 useraddr + offsetof(struct ethtool_rxfh_indir, size),
555 sizeof(user_size)))
556 return -EFAULT;
557
558 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
559 &dev_size, sizeof(dev_size)))
560 return -EFAULT;
561
562 /* If the user buffer size is 0, this is just a query for the
563 * device table size. Otherwise, if it's smaller than the
564 * device table size it's an error.
565 */
566 if (user_size < dev_size)
567 return user_size == 0 ? 0 : -EINVAL;
568
569 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
570 if (!indir)
571 return -ENOMEM;
572
573 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
574 if (ret)
575 goto out;
576
577 if (copy_to_user(useraddr +
578 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
579 indir, dev_size * sizeof(indir[0])))
580 ret = -EFAULT;
581
582 out:
583 kfree(indir);
584 return ret;
585 }
586
587 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
588 void __user *useraddr)
589 {
590 struct ethtool_rxnfc rx_rings;
591 u32 user_size, dev_size, i;
592 u32 *indir;
593 const struct ethtool_ops *ops = dev->ethtool_ops;
594 int ret;
595
596 if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
597 !ops->get_rxnfc)
598 return -EOPNOTSUPP;
599
600 dev_size = ops->get_rxfh_indir_size(dev);
601 if (dev_size == 0)
602 return -EOPNOTSUPP;
603
604 if (copy_from_user(&user_size,
605 useraddr + offsetof(struct ethtool_rxfh_indir, size),
606 sizeof(user_size)))
607 return -EFAULT;
608
609 if (user_size != 0 && user_size != dev_size)
610 return -EINVAL;
611
612 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
613 if (!indir)
614 return -ENOMEM;
615
616 rx_rings.cmd = ETHTOOL_GRXRINGS;
617 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
618 if (ret)
619 goto out;
620
621 if (user_size == 0) {
622 for (i = 0; i < dev_size; i++)
623 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
624 } else {
625 if (copy_from_user(indir,
626 useraddr +
627 offsetof(struct ethtool_rxfh_indir,
628 ring_index[0]),
629 dev_size * sizeof(indir[0]))) {
630 ret = -EFAULT;
631 goto out;
632 }
633
634 /* Validate ring indices */
635 for (i = 0; i < dev_size; i++) {
636 if (indir[i] >= rx_rings.data) {
637 ret = -EINVAL;
638 goto out;
639 }
640 }
641 }
642
643 ret = ops->set_rxfh_indir(dev, indir);
644
645 out:
646 kfree(indir);
647 return ret;
648 }
649
650 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
651 {
652 struct ethtool_regs regs;
653 const struct ethtool_ops *ops = dev->ethtool_ops;
654 void *regbuf;
655 int reglen, ret;
656
657 if (!ops->get_regs || !ops->get_regs_len)
658 return -EOPNOTSUPP;
659
660 if (copy_from_user(&regs, useraddr, sizeof(regs)))
661 return -EFAULT;
662
663 reglen = ops->get_regs_len(dev);
664 if (regs.len > reglen)
665 regs.len = reglen;
666
667 regbuf = vzalloc(reglen);
668 if (reglen && !regbuf)
669 return -ENOMEM;
670
671 ops->get_regs(dev, &regs, regbuf);
672
673 ret = -EFAULT;
674 if (copy_to_user(useraddr, &regs, sizeof(regs)))
675 goto out;
676 useraddr += offsetof(struct ethtool_regs, data);
677 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
678 goto out;
679 ret = 0;
680
681 out:
682 vfree(regbuf);
683 return ret;
684 }
685
686 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
687 {
688 struct ethtool_value reset;
689 int ret;
690
691 if (!dev->ethtool_ops->reset)
692 return -EOPNOTSUPP;
693
694 if (copy_from_user(&reset, useraddr, sizeof(reset)))
695 return -EFAULT;
696
697 ret = dev->ethtool_ops->reset(dev, &reset.data);
698 if (ret)
699 return ret;
700
701 if (copy_to_user(useraddr, &reset, sizeof(reset)))
702 return -EFAULT;
703 return 0;
704 }
705
706 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
707 {
708 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
709
710 if (!dev->ethtool_ops->get_wol)
711 return -EOPNOTSUPP;
712
713 dev->ethtool_ops->get_wol(dev, &wol);
714
715 if (copy_to_user(useraddr, &wol, sizeof(wol)))
716 return -EFAULT;
717 return 0;
718 }
719
720 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
721 {
722 struct ethtool_wolinfo wol;
723
724 if (!dev->ethtool_ops->set_wol)
725 return -EOPNOTSUPP;
726
727 if (copy_from_user(&wol, useraddr, sizeof(wol)))
728 return -EFAULT;
729
730 return dev->ethtool_ops->set_wol(dev, &wol);
731 }
732
733 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
734 {
735 struct ethtool_eee edata;
736 int rc;
737
738 if (!dev->ethtool_ops->get_eee)
739 return -EOPNOTSUPP;
740
741 memset(&edata, 0, sizeof(struct ethtool_eee));
742 edata.cmd = ETHTOOL_GEEE;
743 rc = dev->ethtool_ops->get_eee(dev, &edata);
744
745 if (rc)
746 return rc;
747
748 if (copy_to_user(useraddr, &edata, sizeof(edata)))
749 return -EFAULT;
750
751 return 0;
752 }
753
754 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
755 {
756 struct ethtool_eee edata;
757
758 if (!dev->ethtool_ops->set_eee)
759 return -EOPNOTSUPP;
760
761 if (copy_from_user(&edata, useraddr, sizeof(edata)))
762 return -EFAULT;
763
764 return dev->ethtool_ops->set_eee(dev, &edata);
765 }
766
767 static int ethtool_nway_reset(struct net_device *dev)
768 {
769 if (!dev->ethtool_ops->nway_reset)
770 return -EOPNOTSUPP;
771
772 return dev->ethtool_ops->nway_reset(dev);
773 }
774
775 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
776 {
777 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
778
779 if (!dev->ethtool_ops->get_link)
780 return -EOPNOTSUPP;
781
782 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
783
784 if (copy_to_user(useraddr, &edata, sizeof(edata)))
785 return -EFAULT;
786 return 0;
787 }
788
789 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
790 int (*getter)(struct net_device *,
791 struct ethtool_eeprom *, u8 *),
792 u32 total_len)
793 {
794 struct ethtool_eeprom eeprom;
795 void __user *userbuf = useraddr + sizeof(eeprom);
796 u32 bytes_remaining;
797 u8 *data;
798 int ret = 0;
799
800 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
801 return -EFAULT;
802
803 /* Check for wrap and zero */
804 if (eeprom.offset + eeprom.len <= eeprom.offset)
805 return -EINVAL;
806
807 /* Check for exceeding total eeprom len */
808 if (eeprom.offset + eeprom.len > total_len)
809 return -EINVAL;
810
811 data = kmalloc(PAGE_SIZE, GFP_USER);
812 if (!data)
813 return -ENOMEM;
814
815 bytes_remaining = eeprom.len;
816 while (bytes_remaining > 0) {
817 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
818
819 ret = getter(dev, &eeprom, data);
820 if (ret)
821 break;
822 if (copy_to_user(userbuf, data, eeprom.len)) {
823 ret = -EFAULT;
824 break;
825 }
826 userbuf += eeprom.len;
827 eeprom.offset += eeprom.len;
828 bytes_remaining -= eeprom.len;
829 }
830
831 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
832 eeprom.offset -= eeprom.len;
833 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
834 ret = -EFAULT;
835
836 kfree(data);
837 return ret;
838 }
839
840 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
841 {
842 const struct ethtool_ops *ops = dev->ethtool_ops;
843
844 if (!ops->get_eeprom || !ops->get_eeprom_len)
845 return -EOPNOTSUPP;
846
847 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
848 ops->get_eeprom_len(dev));
849 }
850
851 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
852 {
853 struct ethtool_eeprom eeprom;
854 const struct ethtool_ops *ops = dev->ethtool_ops;
855 void __user *userbuf = useraddr + sizeof(eeprom);
856 u32 bytes_remaining;
857 u8 *data;
858 int ret = 0;
859
860 if (!ops->set_eeprom || !ops->get_eeprom_len)
861 return -EOPNOTSUPP;
862
863 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
864 return -EFAULT;
865
866 /* Check for wrap and zero */
867 if (eeprom.offset + eeprom.len <= eeprom.offset)
868 return -EINVAL;
869
870 /* Check for exceeding total eeprom len */
871 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
872 return -EINVAL;
873
874 data = kmalloc(PAGE_SIZE, GFP_USER);
875 if (!data)
876 return -ENOMEM;
877
878 bytes_remaining = eeprom.len;
879 while (bytes_remaining > 0) {
880 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
881
882 if (copy_from_user(data, userbuf, eeprom.len)) {
883 ret = -EFAULT;
884 break;
885 }
886 ret = ops->set_eeprom(dev, &eeprom, data);
887 if (ret)
888 break;
889 userbuf += eeprom.len;
890 eeprom.offset += eeprom.len;
891 bytes_remaining -= eeprom.len;
892 }
893
894 kfree(data);
895 return ret;
896 }
897
898 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
899 void __user *useraddr)
900 {
901 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
902
903 if (!dev->ethtool_ops->get_coalesce)
904 return -EOPNOTSUPP;
905
906 dev->ethtool_ops->get_coalesce(dev, &coalesce);
907
908 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
909 return -EFAULT;
910 return 0;
911 }
912
913 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
914 void __user *useraddr)
915 {
916 struct ethtool_coalesce coalesce;
917
918 if (!dev->ethtool_ops->set_coalesce)
919 return -EOPNOTSUPP;
920
921 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
922 return -EFAULT;
923
924 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
925 }
926
927 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
928 {
929 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
930
931 if (!dev->ethtool_ops->get_ringparam)
932 return -EOPNOTSUPP;
933
934 dev->ethtool_ops->get_ringparam(dev, &ringparam);
935
936 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
937 return -EFAULT;
938 return 0;
939 }
940
941 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
942 {
943 struct ethtool_ringparam ringparam;
944
945 if (!dev->ethtool_ops->set_ringparam)
946 return -EOPNOTSUPP;
947
948 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
949 return -EFAULT;
950
951 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
952 }
953
954 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
955 void __user *useraddr)
956 {
957 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
958
959 if (!dev->ethtool_ops->get_channels)
960 return -EOPNOTSUPP;
961
962 dev->ethtool_ops->get_channels(dev, &channels);
963
964 if (copy_to_user(useraddr, &channels, sizeof(channels)))
965 return -EFAULT;
966 return 0;
967 }
968
969 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
970 void __user *useraddr)
971 {
972 struct ethtool_channels channels;
973
974 if (!dev->ethtool_ops->set_channels)
975 return -EOPNOTSUPP;
976
977 if (copy_from_user(&channels, useraddr, sizeof(channels)))
978 return -EFAULT;
979
980 return dev->ethtool_ops->set_channels(dev, &channels);
981 }
982
983 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
984 {
985 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
986
987 if (!dev->ethtool_ops->get_pauseparam)
988 return -EOPNOTSUPP;
989
990 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
991
992 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
993 return -EFAULT;
994 return 0;
995 }
996
997 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
998 {
999 struct ethtool_pauseparam pauseparam;
1000
1001 if (!dev->ethtool_ops->set_pauseparam)
1002 return -EOPNOTSUPP;
1003
1004 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1005 return -EFAULT;
1006
1007 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1008 }
1009
1010 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1011 {
1012 struct ethtool_test test;
1013 const struct ethtool_ops *ops = dev->ethtool_ops;
1014 u64 *data;
1015 int ret, test_len;
1016
1017 if (!ops->self_test || !ops->get_sset_count)
1018 return -EOPNOTSUPP;
1019
1020 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1021 if (test_len < 0)
1022 return test_len;
1023 WARN_ON(test_len == 0);
1024
1025 if (copy_from_user(&test, useraddr, sizeof(test)))
1026 return -EFAULT;
1027
1028 test.len = test_len;
1029 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1030 if (!data)
1031 return -ENOMEM;
1032
1033 ops->self_test(dev, &test, data);
1034
1035 ret = -EFAULT;
1036 if (copy_to_user(useraddr, &test, sizeof(test)))
1037 goto out;
1038 useraddr += sizeof(test);
1039 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1040 goto out;
1041 ret = 0;
1042
1043 out:
1044 kfree(data);
1045 return ret;
1046 }
1047
1048 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1049 {
1050 struct ethtool_gstrings gstrings;
1051 u8 *data;
1052 int ret;
1053
1054 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1055 return -EFAULT;
1056
1057 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1058 if (ret < 0)
1059 return ret;
1060
1061 gstrings.len = ret;
1062
1063 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1064 if (!data)
1065 return -ENOMEM;
1066
1067 __ethtool_get_strings(dev, gstrings.string_set, data);
1068
1069 ret = -EFAULT;
1070 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1071 goto out;
1072 useraddr += sizeof(gstrings);
1073 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1074 goto out;
1075 ret = 0;
1076
1077 out:
1078 kfree(data);
1079 return ret;
1080 }
1081
1082 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1083 {
1084 struct ethtool_value id;
1085 static bool busy;
1086 const struct ethtool_ops *ops = dev->ethtool_ops;
1087 int rc;
1088
1089 if (!ops->set_phys_id)
1090 return -EOPNOTSUPP;
1091
1092 if (busy)
1093 return -EBUSY;
1094
1095 if (copy_from_user(&id, useraddr, sizeof(id)))
1096 return -EFAULT;
1097
1098 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1099 if (rc < 0)
1100 return rc;
1101
1102 /* Drop the RTNL lock while waiting, but prevent reentry or
1103 * removal of the device.
1104 */
1105 busy = true;
1106 dev_hold(dev);
1107 rtnl_unlock();
1108
1109 if (rc == 0) {
1110 /* Driver will handle this itself */
1111 schedule_timeout_interruptible(
1112 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1113 } else {
1114 /* Driver expects to be called at twice the frequency in rc */
1115 int n = rc * 2, i, interval = HZ / n;
1116
1117 /* Count down seconds */
1118 do {
1119 /* Count down iterations per second */
1120 i = n;
1121 do {
1122 rtnl_lock();
1123 rc = ops->set_phys_id(dev,
1124 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1125 rtnl_unlock();
1126 if (rc)
1127 break;
1128 schedule_timeout_interruptible(interval);
1129 } while (!signal_pending(current) && --i != 0);
1130 } while (!signal_pending(current) &&
1131 (id.data == 0 || --id.data != 0));
1132 }
1133
1134 rtnl_lock();
1135 dev_put(dev);
1136 busy = false;
1137
1138 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1139 return rc;
1140 }
1141
1142 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1143 {
1144 struct ethtool_stats stats;
1145 const struct ethtool_ops *ops = dev->ethtool_ops;
1146 u64 *data;
1147 int ret, n_stats;
1148
1149 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1150 return -EOPNOTSUPP;
1151
1152 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1153 if (n_stats < 0)
1154 return n_stats;
1155 WARN_ON(n_stats == 0);
1156
1157 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1158 return -EFAULT;
1159
1160 stats.n_stats = n_stats;
1161 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1162 if (!data)
1163 return -ENOMEM;
1164
1165 ops->get_ethtool_stats(dev, &stats, data);
1166
1167 ret = -EFAULT;
1168 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1169 goto out;
1170 useraddr += sizeof(stats);
1171 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1172 goto out;
1173 ret = 0;
1174
1175 out:
1176 kfree(data);
1177 return ret;
1178 }
1179
1180 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1181 {
1182 struct ethtool_perm_addr epaddr;
1183
1184 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1185 return -EFAULT;
1186
1187 if (epaddr.size < dev->addr_len)
1188 return -ETOOSMALL;
1189 epaddr.size = dev->addr_len;
1190
1191 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1192 return -EFAULT;
1193 useraddr += sizeof(epaddr);
1194 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1195 return -EFAULT;
1196 return 0;
1197 }
1198
1199 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1200 u32 cmd, u32 (*actor)(struct net_device *))
1201 {
1202 struct ethtool_value edata = { .cmd = cmd };
1203
1204 if (!actor)
1205 return -EOPNOTSUPP;
1206
1207 edata.data = actor(dev);
1208
1209 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1210 return -EFAULT;
1211 return 0;
1212 }
1213
1214 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1215 void (*actor)(struct net_device *, u32))
1216 {
1217 struct ethtool_value edata;
1218
1219 if (!actor)
1220 return -EOPNOTSUPP;
1221
1222 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1223 return -EFAULT;
1224
1225 actor(dev, edata.data);
1226 return 0;
1227 }
1228
1229 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1230 int (*actor)(struct net_device *, u32))
1231 {
1232 struct ethtool_value edata;
1233
1234 if (!actor)
1235 return -EOPNOTSUPP;
1236
1237 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1238 return -EFAULT;
1239
1240 return actor(dev, edata.data);
1241 }
1242
1243 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1244 char __user *useraddr)
1245 {
1246 struct ethtool_flash efl;
1247
1248 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1249 return -EFAULT;
1250
1251 if (!dev->ethtool_ops->flash_device)
1252 return -EOPNOTSUPP;
1253
1254 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
1255
1256 return dev->ethtool_ops->flash_device(dev, &efl);
1257 }
1258
1259 static int ethtool_set_dump(struct net_device *dev,
1260 void __user *useraddr)
1261 {
1262 struct ethtool_dump dump;
1263
1264 if (!dev->ethtool_ops->set_dump)
1265 return -EOPNOTSUPP;
1266
1267 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1268 return -EFAULT;
1269
1270 return dev->ethtool_ops->set_dump(dev, &dump);
1271 }
1272
1273 static int ethtool_get_dump_flag(struct net_device *dev,
1274 void __user *useraddr)
1275 {
1276 int ret;
1277 struct ethtool_dump dump;
1278 const struct ethtool_ops *ops = dev->ethtool_ops;
1279
1280 if (!ops->get_dump_flag)
1281 return -EOPNOTSUPP;
1282
1283 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1284 return -EFAULT;
1285
1286 ret = ops->get_dump_flag(dev, &dump);
1287 if (ret)
1288 return ret;
1289
1290 if (copy_to_user(useraddr, &dump, sizeof(dump)))
1291 return -EFAULT;
1292 return 0;
1293 }
1294
1295 static int ethtool_get_dump_data(struct net_device *dev,
1296 void __user *useraddr)
1297 {
1298 int ret;
1299 __u32 len;
1300 struct ethtool_dump dump, tmp;
1301 const struct ethtool_ops *ops = dev->ethtool_ops;
1302 void *data = NULL;
1303
1304 if (!ops->get_dump_data || !ops->get_dump_flag)
1305 return -EOPNOTSUPP;
1306
1307 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1308 return -EFAULT;
1309
1310 memset(&tmp, 0, sizeof(tmp));
1311 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
1312 ret = ops->get_dump_flag(dev, &tmp);
1313 if (ret)
1314 return ret;
1315
1316 len = (tmp.len > dump.len) ? dump.len : tmp.len;
1317 if (!len)
1318 return -EFAULT;
1319
1320 data = vzalloc(tmp.len);
1321 if (!data)
1322 return -ENOMEM;
1323 ret = ops->get_dump_data(dev, &dump, data);
1324 if (ret)
1325 goto out;
1326
1327 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
1328 ret = -EFAULT;
1329 goto out;
1330 }
1331 useraddr += offsetof(struct ethtool_dump, data);
1332 if (copy_to_user(useraddr, data, len))
1333 ret = -EFAULT;
1334 out:
1335 vfree(data);
1336 return ret;
1337 }
1338
1339 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
1340 {
1341 int err = 0;
1342 struct ethtool_ts_info info;
1343 const struct ethtool_ops *ops = dev->ethtool_ops;
1344 struct phy_device *phydev = dev->phydev;
1345
1346 memset(&info, 0, sizeof(info));
1347 info.cmd = ETHTOOL_GET_TS_INFO;
1348
1349 if (phydev && phydev->drv && phydev->drv->ts_info) {
1350 err = phydev->drv->ts_info(phydev, &info);
1351 } else if (ops->get_ts_info) {
1352 err = ops->get_ts_info(dev, &info);
1353 } else {
1354 info.so_timestamping =
1355 SOF_TIMESTAMPING_RX_SOFTWARE |
1356 SOF_TIMESTAMPING_SOFTWARE;
1357 info.phc_index = -1;
1358 }
1359
1360 if (err)
1361 return err;
1362
1363 if (copy_to_user(useraddr, &info, sizeof(info)))
1364 err = -EFAULT;
1365
1366 return err;
1367 }
1368
1369 static int ethtool_get_module_info(struct net_device *dev,
1370 void __user *useraddr)
1371 {
1372 int ret;
1373 struct ethtool_modinfo modinfo;
1374 const struct ethtool_ops *ops = dev->ethtool_ops;
1375
1376 if (!ops->get_module_info)
1377 return -EOPNOTSUPP;
1378
1379 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
1380 return -EFAULT;
1381
1382 ret = ops->get_module_info(dev, &modinfo);
1383 if (ret)
1384 return ret;
1385
1386 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
1387 return -EFAULT;
1388
1389 return 0;
1390 }
1391
1392 static int ethtool_get_module_eeprom(struct net_device *dev,
1393 void __user *useraddr)
1394 {
1395 int ret;
1396 struct ethtool_modinfo modinfo;
1397 const struct ethtool_ops *ops = dev->ethtool_ops;
1398
1399 if (!ops->get_module_info || !ops->get_module_eeprom)
1400 return -EOPNOTSUPP;
1401
1402 ret = ops->get_module_info(dev, &modinfo);
1403 if (ret)
1404 return ret;
1405
1406 return ethtool_get_any_eeprom(dev, useraddr, ops->get_module_eeprom,
1407 modinfo.eeprom_len);
1408 }
1409
1410 /* The main entry point in this file. Called from net/core/dev.c */
1411
1412 int dev_ethtool(struct net *net, struct ifreq *ifr)
1413 {
1414 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1415 void __user *useraddr = ifr->ifr_data;
1416 u32 ethcmd;
1417 int rc;
1418 u32 old_features;
1419
1420 if (!dev || !netif_device_present(dev))
1421 return -ENODEV;
1422
1423 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1424 return -EFAULT;
1425
1426 /* Allow some commands to be done by anyone */
1427 switch (ethcmd) {
1428 case ETHTOOL_GSET:
1429 case ETHTOOL_GDRVINFO:
1430 case ETHTOOL_GMSGLVL:
1431 case ETHTOOL_GLINK:
1432 case ETHTOOL_GCOALESCE:
1433 case ETHTOOL_GRINGPARAM:
1434 case ETHTOOL_GPAUSEPARAM:
1435 case ETHTOOL_GRXCSUM:
1436 case ETHTOOL_GTXCSUM:
1437 case ETHTOOL_GSG:
1438 case ETHTOOL_GSSET_INFO:
1439 case ETHTOOL_GSTRINGS:
1440 case ETHTOOL_GSTATS:
1441 case ETHTOOL_GTSO:
1442 case ETHTOOL_GPERMADDR:
1443 case ETHTOOL_GUFO:
1444 case ETHTOOL_GGSO:
1445 case ETHTOOL_GGRO:
1446 case ETHTOOL_GFLAGS:
1447 case ETHTOOL_GPFLAGS:
1448 case ETHTOOL_GRXFH:
1449 case ETHTOOL_GRXRINGS:
1450 case ETHTOOL_GRXCLSRLCNT:
1451 case ETHTOOL_GRXCLSRULE:
1452 case ETHTOOL_GRXCLSRLALL:
1453 case ETHTOOL_GRXFHINDIR:
1454 case ETHTOOL_GFEATURES:
1455 case ETHTOOL_GCHANNELS:
1456 case ETHTOOL_GET_TS_INFO:
1457 case ETHTOOL_GEEE:
1458 break;
1459 default:
1460 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
1461 return -EPERM;
1462 }
1463
1464 if (dev->ethtool_ops->begin) {
1465 rc = dev->ethtool_ops->begin(dev);
1466 if (rc < 0)
1467 return rc;
1468 }
1469 old_features = dev->features;
1470
1471 switch (ethcmd) {
1472 case ETHTOOL_GSET:
1473 rc = ethtool_get_settings(dev, useraddr);
1474 break;
1475 case ETHTOOL_SSET:
1476 rc = ethtool_set_settings(dev, useraddr);
1477 break;
1478 case ETHTOOL_GDRVINFO:
1479 rc = ethtool_get_drvinfo(dev, useraddr);
1480 break;
1481 case ETHTOOL_GREGS:
1482 rc = ethtool_get_regs(dev, useraddr);
1483 break;
1484 case ETHTOOL_GWOL:
1485 rc = ethtool_get_wol(dev, useraddr);
1486 break;
1487 case ETHTOOL_SWOL:
1488 rc = ethtool_set_wol(dev, useraddr);
1489 break;
1490 case ETHTOOL_GMSGLVL:
1491 rc = ethtool_get_value(dev, useraddr, ethcmd,
1492 dev->ethtool_ops->get_msglevel);
1493 break;
1494 case ETHTOOL_SMSGLVL:
1495 rc = ethtool_set_value_void(dev, useraddr,
1496 dev->ethtool_ops->set_msglevel);
1497 break;
1498 case ETHTOOL_GEEE:
1499 rc = ethtool_get_eee(dev, useraddr);
1500 break;
1501 case ETHTOOL_SEEE:
1502 rc = ethtool_set_eee(dev, useraddr);
1503 break;
1504 case ETHTOOL_NWAY_RST:
1505 rc = ethtool_nway_reset(dev);
1506 break;
1507 case ETHTOOL_GLINK:
1508 rc = ethtool_get_link(dev, useraddr);
1509 break;
1510 case ETHTOOL_GEEPROM:
1511 rc = ethtool_get_eeprom(dev, useraddr);
1512 break;
1513 case ETHTOOL_SEEPROM:
1514 rc = ethtool_set_eeprom(dev, useraddr);
1515 break;
1516 case ETHTOOL_GCOALESCE:
1517 rc = ethtool_get_coalesce(dev, useraddr);
1518 break;
1519 case ETHTOOL_SCOALESCE:
1520 rc = ethtool_set_coalesce(dev, useraddr);
1521 break;
1522 case ETHTOOL_GRINGPARAM:
1523 rc = ethtool_get_ringparam(dev, useraddr);
1524 break;
1525 case ETHTOOL_SRINGPARAM:
1526 rc = ethtool_set_ringparam(dev, useraddr);
1527 break;
1528 case ETHTOOL_GPAUSEPARAM:
1529 rc = ethtool_get_pauseparam(dev, useraddr);
1530 break;
1531 case ETHTOOL_SPAUSEPARAM:
1532 rc = ethtool_set_pauseparam(dev, useraddr);
1533 break;
1534 case ETHTOOL_TEST:
1535 rc = ethtool_self_test(dev, useraddr);
1536 break;
1537 case ETHTOOL_GSTRINGS:
1538 rc = ethtool_get_strings(dev, useraddr);
1539 break;
1540 case ETHTOOL_PHYS_ID:
1541 rc = ethtool_phys_id(dev, useraddr);
1542 break;
1543 case ETHTOOL_GSTATS:
1544 rc = ethtool_get_stats(dev, useraddr);
1545 break;
1546 case ETHTOOL_GPERMADDR:
1547 rc = ethtool_get_perm_addr(dev, useraddr);
1548 break;
1549 case ETHTOOL_GFLAGS:
1550 rc = ethtool_get_value(dev, useraddr, ethcmd,
1551 __ethtool_get_flags);
1552 break;
1553 case ETHTOOL_SFLAGS:
1554 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1555 break;
1556 case ETHTOOL_GPFLAGS:
1557 rc = ethtool_get_value(dev, useraddr, ethcmd,
1558 dev->ethtool_ops->get_priv_flags);
1559 break;
1560 case ETHTOOL_SPFLAGS:
1561 rc = ethtool_set_value(dev, useraddr,
1562 dev->ethtool_ops->set_priv_flags);
1563 break;
1564 case ETHTOOL_GRXFH:
1565 case ETHTOOL_GRXRINGS:
1566 case ETHTOOL_GRXCLSRLCNT:
1567 case ETHTOOL_GRXCLSRULE:
1568 case ETHTOOL_GRXCLSRLALL:
1569 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1570 break;
1571 case ETHTOOL_SRXFH:
1572 case ETHTOOL_SRXCLSRLDEL:
1573 case ETHTOOL_SRXCLSRLINS:
1574 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1575 break;
1576 case ETHTOOL_FLASHDEV:
1577 rc = ethtool_flash_device(dev, useraddr);
1578 break;
1579 case ETHTOOL_RESET:
1580 rc = ethtool_reset(dev, useraddr);
1581 break;
1582 case ETHTOOL_GSSET_INFO:
1583 rc = ethtool_get_sset_info(dev, useraddr);
1584 break;
1585 case ETHTOOL_GRXFHINDIR:
1586 rc = ethtool_get_rxfh_indir(dev, useraddr);
1587 break;
1588 case ETHTOOL_SRXFHINDIR:
1589 rc = ethtool_set_rxfh_indir(dev, useraddr);
1590 break;
1591 case ETHTOOL_GFEATURES:
1592 rc = ethtool_get_features(dev, useraddr);
1593 break;
1594 case ETHTOOL_SFEATURES:
1595 rc = ethtool_set_features(dev, useraddr);
1596 break;
1597 case ETHTOOL_GTXCSUM:
1598 case ETHTOOL_GRXCSUM:
1599 case ETHTOOL_GSG:
1600 case ETHTOOL_GTSO:
1601 case ETHTOOL_GUFO:
1602 case ETHTOOL_GGSO:
1603 case ETHTOOL_GGRO:
1604 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1605 break;
1606 case ETHTOOL_STXCSUM:
1607 case ETHTOOL_SRXCSUM:
1608 case ETHTOOL_SSG:
1609 case ETHTOOL_STSO:
1610 case ETHTOOL_SUFO:
1611 case ETHTOOL_SGSO:
1612 case ETHTOOL_SGRO:
1613 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1614 break;
1615 case ETHTOOL_GCHANNELS:
1616 rc = ethtool_get_channels(dev, useraddr);
1617 break;
1618 case ETHTOOL_SCHANNELS:
1619 rc = ethtool_set_channels(dev, useraddr);
1620 break;
1621 case ETHTOOL_SET_DUMP:
1622 rc = ethtool_set_dump(dev, useraddr);
1623 break;
1624 case ETHTOOL_GET_DUMP_FLAG:
1625 rc = ethtool_get_dump_flag(dev, useraddr);
1626 break;
1627 case ETHTOOL_GET_DUMP_DATA:
1628 rc = ethtool_get_dump_data(dev, useraddr);
1629 break;
1630 case ETHTOOL_GET_TS_INFO:
1631 rc = ethtool_get_ts_info(dev, useraddr);
1632 break;
1633 case ETHTOOL_GMODULEINFO:
1634 rc = ethtool_get_module_info(dev, useraddr);
1635 break;
1636 case ETHTOOL_GMODULEEEPROM:
1637 rc = ethtool_get_module_eeprom(dev, useraddr);
1638 break;
1639 default:
1640 rc = -EOPNOTSUPP;
1641 }
1642
1643 if (dev->ethtool_ops->complete)
1644 dev->ethtool_ops->complete(dev);
1645
1646 if (old_features != dev->features)
1647 netdev_features_change(dev);
1648
1649 return rc;
1650 }
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