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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/bitops.h>
21#include <linux/uaccess.h>
22#include <linux/vmalloc.h>
23#include <linux/slab.h>
24#include <linux/rtnetlink.h>
25#include <linux/sched.h>
26
27/*
28 * Some useful ethtool_ops methods that're device independent.
29 * If we find that all drivers want to do the same thing here,
30 * we can turn these into dev_() function calls.
31 */
32
33u32 ethtool_op_get_link(struct net_device *dev)
34{
35 return netif_carrier_ok(dev) ? 1 : 0;
36}
37EXPORT_SYMBOL(ethtool_op_get_link);
38
39u32 ethtool_op_get_tx_csum(struct net_device *dev)
40{
41 return (dev->features & NETIF_F_ALL_CSUM) != 0;
42}
43EXPORT_SYMBOL(ethtool_op_get_tx_csum);
44
45int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
46{
47 if (data)
48 dev->features |= NETIF_F_IP_CSUM;
49 else
50 dev->features &= ~NETIF_F_IP_CSUM;
51
52 return 0;
53}
54EXPORT_SYMBOL(ethtool_op_set_tx_csum);
55
56int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
57{
58 if (data)
59 dev->features |= NETIF_F_HW_CSUM;
60 else
61 dev->features &= ~NETIF_F_HW_CSUM;
62
63 return 0;
64}
65EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);
66
67int ethtool_op_set_tx_ipv6_csum(struct net_device *dev, u32 data)
68{
69 if (data)
70 dev->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
71 else
72 dev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
73
74 return 0;
75}
76EXPORT_SYMBOL(ethtool_op_set_tx_ipv6_csum);
77
78u32 ethtool_op_get_sg(struct net_device *dev)
79{
80 return (dev->features & NETIF_F_SG) != 0;
81}
82EXPORT_SYMBOL(ethtool_op_get_sg);
83
84int ethtool_op_set_sg(struct net_device *dev, u32 data)
85{
86 if (data)
87 dev->features |= NETIF_F_SG;
88 else
89 dev->features &= ~NETIF_F_SG;
90
91 return 0;
92}
93EXPORT_SYMBOL(ethtool_op_set_sg);
94
95u32 ethtool_op_get_tso(struct net_device *dev)
96{
97 return (dev->features & NETIF_F_TSO) != 0;
98}
99EXPORT_SYMBOL(ethtool_op_get_tso);
100
101int ethtool_op_set_tso(struct net_device *dev, u32 data)
102{
103 if (data)
104 dev->features |= NETIF_F_TSO;
105 else
106 dev->features &= ~NETIF_F_TSO;
107
108 return 0;
109}
110EXPORT_SYMBOL(ethtool_op_set_tso);
111
112u32 ethtool_op_get_ufo(struct net_device *dev)
113{
114 return (dev->features & NETIF_F_UFO) != 0;
115}
116EXPORT_SYMBOL(ethtool_op_get_ufo);
117
118int ethtool_op_set_ufo(struct net_device *dev, u32 data)
119{
120 if (data)
121 dev->features |= NETIF_F_UFO;
122 else
123 dev->features &= ~NETIF_F_UFO;
124 return 0;
125}
126EXPORT_SYMBOL(ethtool_op_set_ufo);
127
128/* the following list of flags are the same as their associated
129 * NETIF_F_xxx values in include/linux/netdevice.h
130 */
131static const u32 flags_dup_features =
132 (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | ETH_FLAG_NTUPLE |
133 ETH_FLAG_RXHASH);
134
135u32 ethtool_op_get_flags(struct net_device *dev)
136{
137 /* in the future, this function will probably contain additional
138 * handling for flags which are not so easily handled
139 * by a simple masking operation
140 */
141
142 return dev->features & flags_dup_features;
143}
144EXPORT_SYMBOL(ethtool_op_get_flags);
145
146/* Check if device can enable (or disable) particular feature coded in "data"
147 * argument. Flags "supported" describe features that can be toggled by device.
148 * If feature can not be toggled, it state (enabled or disabled) must match
149 * hardcoded device features state, otherwise flags are marked as invalid.
150 */
151bool ethtool_invalid_flags(struct net_device *dev, u32 data, u32 supported)
152{
153 u32 features = dev->features & flags_dup_features;
154 /* "data" can contain only flags_dup_features bits,
155 * see __ethtool_set_flags */
156
157 return (features & ~supported) != (data & ~supported);
158}
159EXPORT_SYMBOL(ethtool_invalid_flags);
160
161int ethtool_op_set_flags(struct net_device *dev, u32 data, u32 supported)
162{
163 if (ethtool_invalid_flags(dev, data, supported))
164 return -EINVAL;
165
166 dev->features = ((dev->features & ~flags_dup_features) |
167 (data & flags_dup_features));
168 return 0;
169}
170EXPORT_SYMBOL(ethtool_op_set_flags);
171
172/* Handlers for each ethtool command */
173
174#define ETHTOOL_DEV_FEATURE_WORDS 1
175
176static void ethtool_get_features_compat(struct net_device *dev,
177 struct ethtool_get_features_block *features)
178{
179 if (!dev->ethtool_ops)
180 return;
181
182 /* getting RX checksum */
183 if (dev->ethtool_ops->get_rx_csum)
184 if (dev->ethtool_ops->get_rx_csum(dev))
185 features[0].active |= NETIF_F_RXCSUM;
186
187 /* mark legacy-changeable features */
188 if (dev->ethtool_ops->set_sg)
189 features[0].available |= NETIF_F_SG;
190 if (dev->ethtool_ops->set_tx_csum)
191 features[0].available |= NETIF_F_ALL_CSUM;
192 if (dev->ethtool_ops->set_tso)
193 features[0].available |= NETIF_F_ALL_TSO;
194 if (dev->ethtool_ops->set_rx_csum)
195 features[0].available |= NETIF_F_RXCSUM;
196 if (dev->ethtool_ops->set_flags)
197 features[0].available |= flags_dup_features;
198}
199
200static int ethtool_set_feature_compat(struct net_device *dev,
201 int (*legacy_set)(struct net_device *, u32),
202 struct ethtool_set_features_block *features, u32 mask)
203{
204 u32 do_set;
205
206 if (!legacy_set)
207 return 0;
208
209 if (!(features[0].valid & mask))
210 return 0;
211
212 features[0].valid &= ~mask;
213
214 do_set = !!(features[0].requested & mask);
215
216 if (legacy_set(dev, do_set) < 0)
217 netdev_info(dev,
218 "Legacy feature change (%s) failed for 0x%08x\n",
219 do_set ? "set" : "clear", mask);
220
221 return 1;
222}
223
224static int ethtool_set_flags_compat(struct net_device *dev,
225 int (*legacy_set)(struct net_device *, u32),
226 struct ethtool_set_features_block *features, u32 mask)
227{
228 u32 value;
229
230 if (!legacy_set)
231 return 0;
232
233 if (!(features[0].valid & mask))
234 return 0;
235
236 value = dev->features & ~features[0].valid;
237 value |= features[0].requested;
238
239 features[0].valid &= ~mask;
240
241 if (legacy_set(dev, value & mask) < 0)
242 netdev_info(dev, "Legacy flags change failed\n");
243
244 return 1;
245}
246
247static int ethtool_set_features_compat(struct net_device *dev,
248 struct ethtool_set_features_block *features)
249{
250 int compat;
251
252 if (!dev->ethtool_ops)
253 return 0;
254
255 compat = ethtool_set_feature_compat(dev, dev->ethtool_ops->set_sg,
256 features, NETIF_F_SG);
257 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tx_csum,
258 features, NETIF_F_ALL_CSUM);
259 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_tso,
260 features, NETIF_F_ALL_TSO);
261 compat |= ethtool_set_feature_compat(dev, dev->ethtool_ops->set_rx_csum,
262 features, NETIF_F_RXCSUM);
263 compat |= ethtool_set_flags_compat(dev, dev->ethtool_ops->set_flags,
264 features, flags_dup_features);
265
266 return compat;
267}
268
269static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
270{
271 struct ethtool_gfeatures cmd = {
272 .cmd = ETHTOOL_GFEATURES,
273 .size = ETHTOOL_DEV_FEATURE_WORDS,
274 };
275 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS] = {
276 {
277 .available = dev->hw_features,
278 .requested = dev->wanted_features,
279 .active = dev->features,
280 .never_changed = NETIF_F_NEVER_CHANGE,
281 },
282 };
283 u32 __user *sizeaddr;
284 u32 copy_size;
285
286 ethtool_get_features_compat(dev, features);
287
288 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
289 if (get_user(copy_size, sizeaddr))
290 return -EFAULT;
291
292 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
293 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
294
295 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
296 return -EFAULT;
297 useraddr += sizeof(cmd);
298 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
299 return -EFAULT;
300
301 return 0;
302}
303
304static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
305{
306 struct ethtool_sfeatures cmd;
307 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
308 int ret = 0;
309
310 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
311 return -EFAULT;
312 useraddr += sizeof(cmd);
313
314 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
315 return -EINVAL;
316
317 if (copy_from_user(features, useraddr, sizeof(features)))
318 return -EFAULT;
319
320 if (features[0].valid & ~NETIF_F_ETHTOOL_BITS)
321 return -EINVAL;
322
323 if (ethtool_set_features_compat(dev, features))
324 ret |= ETHTOOL_F_COMPAT;
325
326 if (features[0].valid & ~dev->hw_features) {
327 features[0].valid &= dev->hw_features;
328 ret |= ETHTOOL_F_UNSUPPORTED;
329 }
330
331 dev->wanted_features &= ~features[0].valid;
332 dev->wanted_features |= features[0].valid & features[0].requested;
333 __netdev_update_features(dev);
334
335 if ((dev->wanted_features ^ dev->features) & features[0].valid)
336 ret |= ETHTOOL_F_WISH;
337
338 return ret;
339}
340
341static const char netdev_features_strings[ETHTOOL_DEV_FEATURE_WORDS * 32][ETH_GSTRING_LEN] = {
342 /* NETIF_F_SG */ "tx-scatter-gather",
343 /* NETIF_F_IP_CSUM */ "tx-checksum-ipv4",
344 /* NETIF_F_NO_CSUM */ "tx-checksum-unneeded",
345 /* NETIF_F_HW_CSUM */ "tx-checksum-ip-generic",
346 /* NETIF_F_IPV6_CSUM */ "tx-checksum-ipv6",
347 /* NETIF_F_HIGHDMA */ "highdma",
348 /* NETIF_F_FRAGLIST */ "tx-scatter-gather-fraglist",
349 /* NETIF_F_HW_VLAN_TX */ "tx-vlan-hw-insert",
350
351 /* NETIF_F_HW_VLAN_RX */ "rx-vlan-hw-parse",
352 /* NETIF_F_HW_VLAN_FILTER */ "rx-vlan-filter",
353 /* NETIF_F_VLAN_CHALLENGED */ "vlan-challenged",
354 /* NETIF_F_GSO */ "tx-generic-segmentation",
355 /* NETIF_F_LLTX */ "tx-lockless",
356 /* NETIF_F_NETNS_LOCAL */ "netns-local",
357 /* NETIF_F_GRO */ "rx-gro",
358 /* NETIF_F_LRO */ "rx-lro",
359
360 /* NETIF_F_TSO */ "tx-tcp-segmentation",
361 /* NETIF_F_UFO */ "tx-udp-fragmentation",
362 /* NETIF_F_GSO_ROBUST */ "tx-gso-robust",
363 /* NETIF_F_TSO_ECN */ "tx-tcp-ecn-segmentation",
364 /* NETIF_F_TSO6 */ "tx-tcp6-segmentation",
365 /* NETIF_F_FSO */ "tx-fcoe-segmentation",
366 "",
367 "",
368
369 /* NETIF_F_FCOE_CRC */ "tx-checksum-fcoe-crc",
370 /* NETIF_F_SCTP_CSUM */ "tx-checksum-sctp",
371 /* NETIF_F_FCOE_MTU */ "fcoe-mtu",
372 /* NETIF_F_NTUPLE */ "rx-ntuple-filter",
373 /* NETIF_F_RXHASH */ "rx-hashing",
374 /* NETIF_F_RXCSUM */ "rx-checksum",
375 /* NETIF_F_NOCACHE_COPY */ "tx-nocache-copy",
376 /* NETIF_F_LOOPBACK */ "loopback",
377};
378
379static int __ethtool_get_sset_count(struct net_device *dev, int sset)
380{
381 const struct ethtool_ops *ops = dev->ethtool_ops;
382
383 if (sset == ETH_SS_FEATURES)
384 return ARRAY_SIZE(netdev_features_strings);
385
386 if (ops && ops->get_sset_count && ops->get_strings)
387 return ops->get_sset_count(dev, sset);
388 else
389 return -EOPNOTSUPP;
390}
391
392static void __ethtool_get_strings(struct net_device *dev,
393 u32 stringset, u8 *data)
394{
395 const struct ethtool_ops *ops = dev->ethtool_ops;
396
397 if (stringset == ETH_SS_FEATURES)
398 memcpy(data, netdev_features_strings,
399 sizeof(netdev_features_strings));
400 else
401 /* ops->get_strings is valid because checked earlier */
402 ops->get_strings(dev, stringset, data);
403}
404
405static u32 ethtool_get_feature_mask(u32 eth_cmd)
406{
407 /* feature masks of legacy discrete ethtool ops */
408
409 switch (eth_cmd) {
410 case ETHTOOL_GTXCSUM:
411 case ETHTOOL_STXCSUM:
412 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
413 case ETHTOOL_GRXCSUM:
414 case ETHTOOL_SRXCSUM:
415 return NETIF_F_RXCSUM;
416 case ETHTOOL_GSG:
417 case ETHTOOL_SSG:
418 return NETIF_F_SG;
419 case ETHTOOL_GTSO:
420 case ETHTOOL_STSO:
421 return NETIF_F_ALL_TSO;
422 case ETHTOOL_GUFO:
423 case ETHTOOL_SUFO:
424 return NETIF_F_UFO;
425 case ETHTOOL_GGSO:
426 case ETHTOOL_SGSO:
427 return NETIF_F_GSO;
428 case ETHTOOL_GGRO:
429 case ETHTOOL_SGRO:
430 return NETIF_F_GRO;
431 default:
432 BUG();
433 }
434}
435
436static void *__ethtool_get_one_feature_actor(struct net_device *dev, u32 ethcmd)
437{
438 const struct ethtool_ops *ops = dev->ethtool_ops;
439
440 if (!ops)
441 return NULL;
442
443 switch (ethcmd) {
444 case ETHTOOL_GTXCSUM:
445 return ops->get_tx_csum;
446 case ETHTOOL_GRXCSUM:
447 return ops->get_rx_csum;
448 case ETHTOOL_SSG:
449 return ops->get_sg;
450 case ETHTOOL_STSO:
451 return ops->get_tso;
452 case ETHTOOL_SUFO:
453 return ops->get_ufo;
454 default:
455 return NULL;
456 }
457}
458
459static u32 __ethtool_get_rx_csum_oldbug(struct net_device *dev)
460{
461 return !!(dev->features & NETIF_F_ALL_CSUM);
462}
463
464static int ethtool_get_one_feature(struct net_device *dev,
465 char __user *useraddr, u32 ethcmd)
466{
467 u32 mask = ethtool_get_feature_mask(ethcmd);
468 struct ethtool_value edata = {
469 .cmd = ethcmd,
470 .data = !!(dev->features & mask),
471 };
472
473 /* compatibility with discrete get_ ops */
474 if (!(dev->hw_features & mask)) {
475 u32 (*actor)(struct net_device *);
476
477 actor = __ethtool_get_one_feature_actor(dev, ethcmd);
478
479 /* bug compatibility with old get_rx_csum */
480 if (ethcmd == ETHTOOL_GRXCSUM && !actor)
481 actor = __ethtool_get_rx_csum_oldbug;
482
483 if (actor)
484 edata.data = actor(dev);
485 }
486
487 if (copy_to_user(useraddr, &edata, sizeof(edata)))
488 return -EFAULT;
489 return 0;
490}
491
492static int __ethtool_set_tx_csum(struct net_device *dev, u32 data);
493static int __ethtool_set_rx_csum(struct net_device *dev, u32 data);
494static int __ethtool_set_sg(struct net_device *dev, u32 data);
495static int __ethtool_set_tso(struct net_device *dev, u32 data);
496static int __ethtool_set_ufo(struct net_device *dev, u32 data);
497
498static int ethtool_set_one_feature(struct net_device *dev,
499 void __user *useraddr, u32 ethcmd)
500{
501 struct ethtool_value edata;
502 u32 mask;
503
504 if (copy_from_user(&edata, useraddr, sizeof(edata)))
505 return -EFAULT;
506
507 mask = ethtool_get_feature_mask(ethcmd);
508 mask &= dev->hw_features;
509 if (mask) {
510 if (edata.data)
511 dev->wanted_features |= mask;
512 else
513 dev->wanted_features &= ~mask;
514
515 __netdev_update_features(dev);
516 return 0;
517 }
518
519 /* Driver is not converted to ndo_fix_features or does not
520 * support changing this offload. In the latter case it won't
521 * have corresponding ethtool_ops field set.
522 *
523 * Following part is to be removed after all drivers advertise
524 * their changeable features in netdev->hw_features and stop
525 * using discrete offload setting ops.
526 */
527
528 switch (ethcmd) {
529 case ETHTOOL_STXCSUM:
530 return __ethtool_set_tx_csum(dev, edata.data);
531 case ETHTOOL_SRXCSUM:
532 return __ethtool_set_rx_csum(dev, edata.data);
533 case ETHTOOL_SSG:
534 return __ethtool_set_sg(dev, edata.data);
535 case ETHTOOL_STSO:
536 return __ethtool_set_tso(dev, edata.data);
537 case ETHTOOL_SUFO:
538 return __ethtool_set_ufo(dev, edata.data);
539 default:
540 return -EOPNOTSUPP;
541 }
542}
543
544int __ethtool_set_flags(struct net_device *dev, u32 data)
545{
546 u32 changed;
547
548 if (data & ~flags_dup_features)
549 return -EINVAL;
550
551 /* legacy set_flags() op */
552 if (dev->ethtool_ops->set_flags) {
553 if (unlikely(dev->hw_features & flags_dup_features))
554 netdev_warn(dev,
555 "driver BUG: mixed hw_features and set_flags()\n");
556 return dev->ethtool_ops->set_flags(dev, data);
557 }
558
559 /* allow changing only bits set in hw_features */
560 changed = (data ^ dev->features) & flags_dup_features;
561 if (changed & ~dev->hw_features)
562 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
563
564 dev->wanted_features =
565 (dev->wanted_features & ~changed) | (data & dev->hw_features);
566
567 __netdev_update_features(dev);
568
569 return 0;
570}
571
572static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
573{
574 struct ethtool_cmd cmd = { .cmd = ETHTOOL_GSET };
575 int err;
576
577 if (!dev->ethtool_ops->get_settings)
578 return -EOPNOTSUPP;
579
580 err = dev->ethtool_ops->get_settings(dev, &cmd);
581 if (err < 0)
582 return err;
583
584 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
585 return -EFAULT;
586 return 0;
587}
588
589static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
590{
591 struct ethtool_cmd cmd;
592
593 if (!dev->ethtool_ops->set_settings)
594 return -EOPNOTSUPP;
595
596 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
597 return -EFAULT;
598
599 return dev->ethtool_ops->set_settings(dev, &cmd);
600}
601
602static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
603 void __user *useraddr)
604{
605 struct ethtool_drvinfo info;
606 const struct ethtool_ops *ops = dev->ethtool_ops;
607
608 memset(&info, 0, sizeof(info));
609 info.cmd = ETHTOOL_GDRVINFO;
610 if (ops && ops->get_drvinfo) {
611 ops->get_drvinfo(dev, &info);
612 } else if (dev->dev.parent && dev->dev.parent->driver) {
613 strlcpy(info.bus_info, dev_name(dev->dev.parent),
614 sizeof(info.bus_info));
615 strlcpy(info.driver, dev->dev.parent->driver->name,
616 sizeof(info.driver));
617 } else {
618 return -EOPNOTSUPP;
619 }
620
621 /*
622 * this method of obtaining string set info is deprecated;
623 * Use ETHTOOL_GSSET_INFO instead.
624 */
625 if (ops && ops->get_sset_count) {
626 int rc;
627
628 rc = ops->get_sset_count(dev, ETH_SS_TEST);
629 if (rc >= 0)
630 info.testinfo_len = rc;
631 rc = ops->get_sset_count(dev, ETH_SS_STATS);
632 if (rc >= 0)
633 info.n_stats = rc;
634 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
635 if (rc >= 0)
636 info.n_priv_flags = rc;
637 }
638 if (ops && ops->get_regs_len)
639 info.regdump_len = ops->get_regs_len(dev);
640 if (ops && ops->get_eeprom_len)
641 info.eedump_len = ops->get_eeprom_len(dev);
642
643 if (copy_to_user(useraddr, &info, sizeof(info)))
644 return -EFAULT;
645 return 0;
646}
647
648static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
649 void __user *useraddr)
650{
651 struct ethtool_sset_info info;
652 u64 sset_mask;
653 int i, idx = 0, n_bits = 0, ret, rc;
654 u32 *info_buf = NULL;
655
656 if (copy_from_user(&info, useraddr, sizeof(info)))
657 return -EFAULT;
658
659 /* store copy of mask, because we zero struct later on */
660 sset_mask = info.sset_mask;
661 if (!sset_mask)
662 return 0;
663
664 /* calculate size of return buffer */
665 n_bits = hweight64(sset_mask);
666
667 memset(&info, 0, sizeof(info));
668 info.cmd = ETHTOOL_GSSET_INFO;
669
670 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
671 if (!info_buf)
672 return -ENOMEM;
673
674 /*
675 * fill return buffer based on input bitmask and successful
676 * get_sset_count return
677 */
678 for (i = 0; i < 64; i++) {
679 if (!(sset_mask & (1ULL << i)))
680 continue;
681
682 rc = __ethtool_get_sset_count(dev, i);
683 if (rc >= 0) {
684 info.sset_mask |= (1ULL << i);
685 info_buf[idx++] = rc;
686 }
687 }
688
689 ret = -EFAULT;
690 if (copy_to_user(useraddr, &info, sizeof(info)))
691 goto out;
692
693 useraddr += offsetof(struct ethtool_sset_info, data);
694 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
695 goto out;
696
697 ret = 0;
698
699out:
700 kfree(info_buf);
701 return ret;
702}
703
704static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
705 u32 cmd, void __user *useraddr)
706{
707 struct ethtool_rxnfc info;
708 size_t info_size = sizeof(info);
709
710 if (!dev->ethtool_ops->set_rxnfc)
711 return -EOPNOTSUPP;
712
713 /* struct ethtool_rxnfc was originally defined for
714 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
715 * members. User-space might still be using that
716 * definition. */
717 if (cmd == ETHTOOL_SRXFH)
718 info_size = (offsetof(struct ethtool_rxnfc, data) +
719 sizeof(info.data));
720
721 if (copy_from_user(&info, useraddr, info_size))
722 return -EFAULT;
723
724 return dev->ethtool_ops->set_rxnfc(dev, &info);
725}
726
727static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
728 u32 cmd, void __user *useraddr)
729{
730 struct ethtool_rxnfc info;
731 size_t info_size = sizeof(info);
732 const struct ethtool_ops *ops = dev->ethtool_ops;
733 int ret;
734 void *rule_buf = NULL;
735
736 if (!ops->get_rxnfc)
737 return -EOPNOTSUPP;
738
739 /* struct ethtool_rxnfc was originally defined for
740 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
741 * members. User-space might still be using that
742 * definition. */
743 if (cmd == ETHTOOL_GRXFH)
744 info_size = (offsetof(struct ethtool_rxnfc, data) +
745 sizeof(info.data));
746
747 if (copy_from_user(&info, useraddr, info_size))
748 return -EFAULT;
749
750 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
751 if (info.rule_cnt > 0) {
752 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
753 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
754 GFP_USER);
755 if (!rule_buf)
756 return -ENOMEM;
757 }
758 }
759
760 ret = ops->get_rxnfc(dev, &info, rule_buf);
761 if (ret < 0)
762 goto err_out;
763
764 ret = -EFAULT;
765 if (copy_to_user(useraddr, &info, info_size))
766 goto err_out;
767
768 if (rule_buf) {
769 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
770 if (copy_to_user(useraddr, rule_buf,
771 info.rule_cnt * sizeof(u32)))
772 goto err_out;
773 }
774 ret = 0;
775
776err_out:
777 kfree(rule_buf);
778
779 return ret;
780}
781
782static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
783 void __user *useraddr)
784{
785 struct ethtool_rxfh_indir *indir;
786 u32 table_size;
787 size_t full_size;
788 int ret;
789
790 if (!dev->ethtool_ops->get_rxfh_indir)
791 return -EOPNOTSUPP;
792
793 if (copy_from_user(&table_size,
794 useraddr + offsetof(struct ethtool_rxfh_indir, size),
795 sizeof(table_size)))
796 return -EFAULT;
797
798 if (table_size >
799 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
800 return -ENOMEM;
801 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
802 indir = kzalloc(full_size, GFP_USER);
803 if (!indir)
804 return -ENOMEM;
805
806 indir->cmd = ETHTOOL_GRXFHINDIR;
807 indir->size = table_size;
808 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
809 if (ret)
810 goto out;
811
812 if (copy_to_user(useraddr, indir, full_size))
813 ret = -EFAULT;
814
815out:
816 kfree(indir);
817 return ret;
818}
819
820static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
821 void __user *useraddr)
822{
823 struct ethtool_rxfh_indir *indir;
824 u32 table_size;
825 size_t full_size;
826 int ret;
827
828 if (!dev->ethtool_ops->set_rxfh_indir)
829 return -EOPNOTSUPP;
830
831 if (copy_from_user(&table_size,
832 useraddr + offsetof(struct ethtool_rxfh_indir, size),
833 sizeof(table_size)))
834 return -EFAULT;
835
836 if (table_size >
837 (KMALLOC_MAX_SIZE - sizeof(*indir)) / sizeof(*indir->ring_index))
838 return -ENOMEM;
839 full_size = sizeof(*indir) + sizeof(*indir->ring_index) * table_size;
840 indir = kmalloc(full_size, GFP_USER);
841 if (!indir)
842 return -ENOMEM;
843
844 if (copy_from_user(indir, useraddr, full_size)) {
845 ret = -EFAULT;
846 goto out;
847 }
848
849 ret = dev->ethtool_ops->set_rxfh_indir(dev, indir);
850
851out:
852 kfree(indir);
853 return ret;
854}
855
856/*
857 * ethtool does not (or did not) set masks for flow parameters that are
858 * not specified, so if both value and mask are 0 then this must be
859 * treated as equivalent to a mask with all bits set. Implement that
860 * here rather than in drivers.
861 */
862static void rx_ntuple_fix_masks(struct ethtool_rx_ntuple_flow_spec *fs)
863{
864 struct ethtool_tcpip4_spec *entry = &fs->h_u.tcp_ip4_spec;
865 struct ethtool_tcpip4_spec *mask = &fs->m_u.tcp_ip4_spec;
866
867 if (fs->flow_type != TCP_V4_FLOW &&
868 fs->flow_type != UDP_V4_FLOW &&
869 fs->flow_type != SCTP_V4_FLOW)
870 return;
871
872 if (!(entry->ip4src | mask->ip4src))
873 mask->ip4src = htonl(0xffffffff);
874 if (!(entry->ip4dst | mask->ip4dst))
875 mask->ip4dst = htonl(0xffffffff);
876 if (!(entry->psrc | mask->psrc))
877 mask->psrc = htons(0xffff);
878 if (!(entry->pdst | mask->pdst))
879 mask->pdst = htons(0xffff);
880 if (!(entry->tos | mask->tos))
881 mask->tos = 0xff;
882 if (!(fs->vlan_tag | fs->vlan_tag_mask))
883 fs->vlan_tag_mask = 0xffff;
884 if (!(fs->data | fs->data_mask))
885 fs->data_mask = 0xffffffffffffffffULL;
886}
887
888static noinline_for_stack int ethtool_set_rx_ntuple(struct net_device *dev,
889 void __user *useraddr)
890{
891 struct ethtool_rx_ntuple cmd;
892 const struct ethtool_ops *ops = dev->ethtool_ops;
893
894 if (!ops->set_rx_ntuple)
895 return -EOPNOTSUPP;
896
897 if (!(dev->features & NETIF_F_NTUPLE))
898 return -EINVAL;
899
900 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
901 return -EFAULT;
902
903 rx_ntuple_fix_masks(&cmd.fs);
904
905 return ops->set_rx_ntuple(dev, &cmd);
906}
907
908static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
909{
910 struct ethtool_regs regs;
911 const struct ethtool_ops *ops = dev->ethtool_ops;
912 void *regbuf;
913 int reglen, ret;
914
915 if (!ops->get_regs || !ops->get_regs_len)
916 return -EOPNOTSUPP;
917
918 if (copy_from_user(®s, useraddr, sizeof(regs)))
919 return -EFAULT;
920
921 reglen = ops->get_regs_len(dev);
922 if (regs.len > reglen)
923 regs.len = reglen;
924
925 regbuf = vzalloc(reglen);
926 if (reglen && !regbuf)
927 return -ENOMEM;
928
929 ops->get_regs(dev, ®s, regbuf);
930
931 ret = -EFAULT;
932 if (copy_to_user(useraddr, ®s, sizeof(regs)))
933 goto out;
934 useraddr += offsetof(struct ethtool_regs, data);
935 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
936 goto out;
937 ret = 0;
938
939 out:
940 vfree(regbuf);
941 return ret;
942}
943
944static int ethtool_reset(struct net_device *dev, char __user *useraddr)
945{
946 struct ethtool_value reset;
947 int ret;
948
949 if (!dev->ethtool_ops->reset)
950 return -EOPNOTSUPP;
951
952 if (copy_from_user(&reset, useraddr, sizeof(reset)))
953 return -EFAULT;
954
955 ret = dev->ethtool_ops->reset(dev, &reset.data);
956 if (ret)
957 return ret;
958
959 if (copy_to_user(useraddr, &reset, sizeof(reset)))
960 return -EFAULT;
961 return 0;
962}
963
964static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
965{
966 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
967
968 if (!dev->ethtool_ops->get_wol)
969 return -EOPNOTSUPP;
970
971 dev->ethtool_ops->get_wol(dev, &wol);
972
973 if (copy_to_user(useraddr, &wol, sizeof(wol)))
974 return -EFAULT;
975 return 0;
976}
977
978static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
979{
980 struct ethtool_wolinfo wol;
981
982 if (!dev->ethtool_ops->set_wol)
983 return -EOPNOTSUPP;
984
985 if (copy_from_user(&wol, useraddr, sizeof(wol)))
986 return -EFAULT;
987
988 return dev->ethtool_ops->set_wol(dev, &wol);
989}
990
991static int ethtool_nway_reset(struct net_device *dev)
992{
993 if (!dev->ethtool_ops->nway_reset)
994 return -EOPNOTSUPP;
995
996 return dev->ethtool_ops->nway_reset(dev);
997}
998
999static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1000{
1001 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1002
1003 if (!dev->ethtool_ops->get_link)
1004 return -EOPNOTSUPP;
1005
1006 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1007
1008 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1009 return -EFAULT;
1010 return 0;
1011}
1012
1013static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1014{
1015 struct ethtool_eeprom eeprom;
1016 const struct ethtool_ops *ops = dev->ethtool_ops;
1017 void __user *userbuf = useraddr + sizeof(eeprom);
1018 u32 bytes_remaining;
1019 u8 *data;
1020 int ret = 0;
1021
1022 if (!ops->get_eeprom || !ops->get_eeprom_len)
1023 return -EOPNOTSUPP;
1024
1025 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1026 return -EFAULT;
1027
1028 /* Check for wrap and zero */
1029 if (eeprom.offset + eeprom.len <= eeprom.offset)
1030 return -EINVAL;
1031
1032 /* Check for exceeding total eeprom len */
1033 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1034 return -EINVAL;
1035
1036 data = kmalloc(PAGE_SIZE, GFP_USER);
1037 if (!data)
1038 return -ENOMEM;
1039
1040 bytes_remaining = eeprom.len;
1041 while (bytes_remaining > 0) {
1042 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1043
1044 ret = ops->get_eeprom(dev, &eeprom, data);
1045 if (ret)
1046 break;
1047 if (copy_to_user(userbuf, data, eeprom.len)) {
1048 ret = -EFAULT;
1049 break;
1050 }
1051 userbuf += eeprom.len;
1052 eeprom.offset += eeprom.len;
1053 bytes_remaining -= eeprom.len;
1054 }
1055
1056 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1057 eeprom.offset -= eeprom.len;
1058 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1059 ret = -EFAULT;
1060
1061 kfree(data);
1062 return ret;
1063}
1064
1065static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1066{
1067 struct ethtool_eeprom eeprom;
1068 const struct ethtool_ops *ops = dev->ethtool_ops;
1069 void __user *userbuf = useraddr + sizeof(eeprom);
1070 u32 bytes_remaining;
1071 u8 *data;
1072 int ret = 0;
1073
1074 if (!ops->set_eeprom || !ops->get_eeprom_len)
1075 return -EOPNOTSUPP;
1076
1077 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1078 return -EFAULT;
1079
1080 /* Check for wrap and zero */
1081 if (eeprom.offset + eeprom.len <= eeprom.offset)
1082 return -EINVAL;
1083
1084 /* Check for exceeding total eeprom len */
1085 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1086 return -EINVAL;
1087
1088 data = kmalloc(PAGE_SIZE, GFP_USER);
1089 if (!data)
1090 return -ENOMEM;
1091
1092 bytes_remaining = eeprom.len;
1093 while (bytes_remaining > 0) {
1094 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1095
1096 if (copy_from_user(data, userbuf, eeprom.len)) {
1097 ret = -EFAULT;
1098 break;
1099 }
1100 ret = ops->set_eeprom(dev, &eeprom, data);
1101 if (ret)
1102 break;
1103 userbuf += eeprom.len;
1104 eeprom.offset += eeprom.len;
1105 bytes_remaining -= eeprom.len;
1106 }
1107
1108 kfree(data);
1109 return ret;
1110}
1111
1112static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1113 void __user *useraddr)
1114{
1115 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1116
1117 if (!dev->ethtool_ops->get_coalesce)
1118 return -EOPNOTSUPP;
1119
1120 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1121
1122 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1123 return -EFAULT;
1124 return 0;
1125}
1126
1127static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1128 void __user *useraddr)
1129{
1130 struct ethtool_coalesce coalesce;
1131
1132 if (!dev->ethtool_ops->set_coalesce)
1133 return -EOPNOTSUPP;
1134
1135 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1136 return -EFAULT;
1137
1138 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1139}
1140
1141static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1142{
1143 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1144
1145 if (!dev->ethtool_ops->get_ringparam)
1146 return -EOPNOTSUPP;
1147
1148 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1149
1150 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1151 return -EFAULT;
1152 return 0;
1153}
1154
1155static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1156{
1157 struct ethtool_ringparam ringparam;
1158
1159 if (!dev->ethtool_ops->set_ringparam)
1160 return -EOPNOTSUPP;
1161
1162 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1163 return -EFAULT;
1164
1165 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1166}
1167
1168static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1169 void __user *useraddr)
1170{
1171 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1172
1173 if (!dev->ethtool_ops->get_channels)
1174 return -EOPNOTSUPP;
1175
1176 dev->ethtool_ops->get_channels(dev, &channels);
1177
1178 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1179 return -EFAULT;
1180 return 0;
1181}
1182
1183static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1184 void __user *useraddr)
1185{
1186 struct ethtool_channels channels;
1187
1188 if (!dev->ethtool_ops->set_channels)
1189 return -EOPNOTSUPP;
1190
1191 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1192 return -EFAULT;
1193
1194 return dev->ethtool_ops->set_channels(dev, &channels);
1195}
1196
1197static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1198{
1199 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1200
1201 if (!dev->ethtool_ops->get_pauseparam)
1202 return -EOPNOTSUPP;
1203
1204 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1205
1206 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1207 return -EFAULT;
1208 return 0;
1209}
1210
1211static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1212{
1213 struct ethtool_pauseparam pauseparam;
1214
1215 if (!dev->ethtool_ops->set_pauseparam)
1216 return -EOPNOTSUPP;
1217
1218 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1219 return -EFAULT;
1220
1221 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1222}
1223
1224static int __ethtool_set_sg(struct net_device *dev, u32 data)
1225{
1226 int err;
1227
1228 if (!dev->ethtool_ops->set_sg)
1229 return -EOPNOTSUPP;
1230
1231 if (data && !(dev->features & NETIF_F_ALL_CSUM))
1232 return -EINVAL;
1233
1234 if (!data && dev->ethtool_ops->set_tso) {
1235 err = dev->ethtool_ops->set_tso(dev, 0);
1236 if (err)
1237 return err;
1238 }
1239
1240 if (!data && dev->ethtool_ops->set_ufo) {
1241 err = dev->ethtool_ops->set_ufo(dev, 0);
1242 if (err)
1243 return err;
1244 }
1245 return dev->ethtool_ops->set_sg(dev, data);
1246}
1247
1248static int __ethtool_set_tx_csum(struct net_device *dev, u32 data)
1249{
1250 int err;
1251
1252 if (!dev->ethtool_ops->set_tx_csum)
1253 return -EOPNOTSUPP;
1254
1255 if (!data && dev->ethtool_ops->set_sg) {
1256 err = __ethtool_set_sg(dev, 0);
1257 if (err)
1258 return err;
1259 }
1260
1261 return dev->ethtool_ops->set_tx_csum(dev, data);
1262}
1263
1264static int __ethtool_set_rx_csum(struct net_device *dev, u32 data)
1265{
1266 if (!dev->ethtool_ops->set_rx_csum)
1267 return -EOPNOTSUPP;
1268
1269 if (!data)
1270 dev->features &= ~NETIF_F_GRO;
1271
1272 return dev->ethtool_ops->set_rx_csum(dev, data);
1273}
1274
1275static int __ethtool_set_tso(struct net_device *dev, u32 data)
1276{
1277 if (!dev->ethtool_ops->set_tso)
1278 return -EOPNOTSUPP;
1279
1280 if (data && !(dev->features & NETIF_F_SG))
1281 return -EINVAL;
1282
1283 return dev->ethtool_ops->set_tso(dev, data);
1284}
1285
1286static int __ethtool_set_ufo(struct net_device *dev, u32 data)
1287{
1288 if (!dev->ethtool_ops->set_ufo)
1289 return -EOPNOTSUPP;
1290 if (data && !(dev->features & NETIF_F_SG))
1291 return -EINVAL;
1292 if (data && !((dev->features & NETIF_F_GEN_CSUM) ||
1293 (dev->features & (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM))
1294 == (NETIF_F_IP_CSUM|NETIF_F_IPV6_CSUM)))
1295 return -EINVAL;
1296 return dev->ethtool_ops->set_ufo(dev, data);
1297}
1298
1299static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1300{
1301 struct ethtool_test test;
1302 const struct ethtool_ops *ops = dev->ethtool_ops;
1303 u64 *data;
1304 int ret, test_len;
1305
1306 if (!ops->self_test || !ops->get_sset_count)
1307 return -EOPNOTSUPP;
1308
1309 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1310 if (test_len < 0)
1311 return test_len;
1312 WARN_ON(test_len == 0);
1313
1314 if (copy_from_user(&test, useraddr, sizeof(test)))
1315 return -EFAULT;
1316
1317 test.len = test_len;
1318 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1319 if (!data)
1320 return -ENOMEM;
1321
1322 ops->self_test(dev, &test, data);
1323
1324 ret = -EFAULT;
1325 if (copy_to_user(useraddr, &test, sizeof(test)))
1326 goto out;
1327 useraddr += sizeof(test);
1328 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1329 goto out;
1330 ret = 0;
1331
1332 out:
1333 kfree(data);
1334 return ret;
1335}
1336
1337static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1338{
1339 struct ethtool_gstrings gstrings;
1340 u8 *data;
1341 int ret;
1342
1343 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1344 return -EFAULT;
1345
1346 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1347 if (ret < 0)
1348 return ret;
1349
1350 gstrings.len = ret;
1351
1352 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1353 if (!data)
1354 return -ENOMEM;
1355
1356 __ethtool_get_strings(dev, gstrings.string_set, data);
1357
1358 ret = -EFAULT;
1359 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1360 goto out;
1361 useraddr += sizeof(gstrings);
1362 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1363 goto out;
1364 ret = 0;
1365
1366out:
1367 kfree(data);
1368 return ret;
1369}
1370
1371static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1372{
1373 struct ethtool_value id;
1374 static bool busy;
1375 int rc;
1376
1377 if (!dev->ethtool_ops->set_phys_id)
1378 return -EOPNOTSUPP;
1379
1380 if (busy)
1381 return -EBUSY;
1382
1383 if (copy_from_user(&id, useraddr, sizeof(id)))
1384 return -EFAULT;
1385
1386 rc = dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1387 if (rc < 0)
1388 return rc;
1389
1390 /* Drop the RTNL lock while waiting, but prevent reentry or
1391 * removal of the device.
1392 */
1393 busy = true;
1394 dev_hold(dev);
1395 rtnl_unlock();
1396
1397 if (rc == 0) {
1398 /* Driver will handle this itself */
1399 schedule_timeout_interruptible(
1400 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1401 } else {
1402 /* Driver expects to be called at twice the frequency in rc */
1403 int n = rc * 2, i, interval = HZ / n;
1404
1405 /* Count down seconds */
1406 do {
1407 /* Count down iterations per second */
1408 i = n;
1409 do {
1410 rtnl_lock();
1411 rc = dev->ethtool_ops->set_phys_id(dev,
1412 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1413 rtnl_unlock();
1414 if (rc)
1415 break;
1416 schedule_timeout_interruptible(interval);
1417 } while (!signal_pending(current) && --i != 0);
1418 } while (!signal_pending(current) &&
1419 (id.data == 0 || --id.data != 0));
1420 }
1421
1422 rtnl_lock();
1423 dev_put(dev);
1424 busy = false;
1425
1426 (void)dev->ethtool_ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1427 return rc;
1428}
1429
1430static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1431{
1432 struct ethtool_stats stats;
1433 const struct ethtool_ops *ops = dev->ethtool_ops;
1434 u64 *data;
1435 int ret, n_stats;
1436
1437 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1438 return -EOPNOTSUPP;
1439
1440 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1441 if (n_stats < 0)
1442 return n_stats;
1443 WARN_ON(n_stats == 0);
1444
1445 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1446 return -EFAULT;
1447
1448 stats.n_stats = n_stats;
1449 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1450 if (!data)
1451 return -ENOMEM;
1452
1453 ops->get_ethtool_stats(dev, &stats, data);
1454
1455 ret = -EFAULT;
1456 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1457 goto out;
1458 useraddr += sizeof(stats);
1459 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1460 goto out;
1461 ret = 0;
1462
1463 out:
1464 kfree(data);
1465 return ret;
1466}
1467
1468static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1469{
1470 struct ethtool_perm_addr epaddr;
1471
1472 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1473 return -EFAULT;
1474
1475 if (epaddr.size < dev->addr_len)
1476 return -ETOOSMALL;
1477 epaddr.size = dev->addr_len;
1478
1479 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1480 return -EFAULT;
1481 useraddr += sizeof(epaddr);
1482 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1483 return -EFAULT;
1484 return 0;
1485}
1486
1487static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1488 u32 cmd, u32 (*actor)(struct net_device *))
1489{
1490 struct ethtool_value edata = { .cmd = cmd };
1491
1492 if (!actor)
1493 return -EOPNOTSUPP;
1494
1495 edata.data = actor(dev);
1496
1497 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1498 return -EFAULT;
1499 return 0;
1500}
1501
1502static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1503 void (*actor)(struct net_device *, u32))
1504{
1505 struct ethtool_value edata;
1506
1507 if (!actor)
1508 return -EOPNOTSUPP;
1509
1510 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1511 return -EFAULT;
1512
1513 actor(dev, edata.data);
1514 return 0;
1515}
1516
1517static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1518 int (*actor)(struct net_device *, u32))
1519{
1520 struct ethtool_value edata;
1521
1522 if (!actor)
1523 return -EOPNOTSUPP;
1524
1525 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1526 return -EFAULT;
1527
1528 return actor(dev, edata.data);
1529}
1530
1531static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1532 char __user *useraddr)
1533{
1534 struct ethtool_flash efl;
1535
1536 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1537 return -EFAULT;
1538
1539 if (!dev->ethtool_ops->flash_device)
1540 return -EOPNOTSUPP;
1541
1542 return dev->ethtool_ops->flash_device(dev, &efl);
1543}
1544
1545static int ethtool_set_dump(struct net_device *dev,
1546 void __user *useraddr)
1547{
1548 struct ethtool_dump dump;
1549
1550 if (!dev->ethtool_ops->set_dump)
1551 return -EOPNOTSUPP;
1552
1553 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1554 return -EFAULT;
1555
1556 return dev->ethtool_ops->set_dump(dev, &dump);
1557}
1558
1559static int ethtool_get_dump_flag(struct net_device *dev,
1560 void __user *useraddr)
1561{
1562 int ret;
1563 struct ethtool_dump dump;
1564 const struct ethtool_ops *ops = dev->ethtool_ops;
1565
1566 if (!dev->ethtool_ops->get_dump_flag)
1567 return -EOPNOTSUPP;
1568
1569 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1570 return -EFAULT;
1571
1572 ret = ops->get_dump_flag(dev, &dump);
1573 if (ret)
1574 return ret;
1575
1576 if (copy_to_user(useraddr, &dump, sizeof(dump)))
1577 return -EFAULT;
1578 return 0;
1579}
1580
1581static int ethtool_get_dump_data(struct net_device *dev,
1582 void __user *useraddr)
1583{
1584 int ret;
1585 __u32 len;
1586 struct ethtool_dump dump, tmp;
1587 const struct ethtool_ops *ops = dev->ethtool_ops;
1588 void *data = NULL;
1589
1590 if (!dev->ethtool_ops->get_dump_data ||
1591 !dev->ethtool_ops->get_dump_flag)
1592 return -EOPNOTSUPP;
1593
1594 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1595 return -EFAULT;
1596
1597 memset(&tmp, 0, sizeof(tmp));
1598 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
1599 ret = ops->get_dump_flag(dev, &tmp);
1600 if (ret)
1601 return ret;
1602
1603 len = (tmp.len > dump.len) ? dump.len : tmp.len;
1604 if (!len)
1605 return -EFAULT;
1606
1607 data = vzalloc(tmp.len);
1608 if (!data)
1609 return -ENOMEM;
1610 ret = ops->get_dump_data(dev, &dump, data);
1611 if (ret)
1612 goto out;
1613
1614 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
1615 ret = -EFAULT;
1616 goto out;
1617 }
1618 useraddr += offsetof(struct ethtool_dump, data);
1619 if (copy_to_user(useraddr, data, len))
1620 ret = -EFAULT;
1621out:
1622 vfree(data);
1623 return ret;
1624}
1625
1626/* The main entry point in this file. Called from net/core/dev.c */
1627
1628int dev_ethtool(struct net *net, struct ifreq *ifr)
1629{
1630 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1631 void __user *useraddr = ifr->ifr_data;
1632 u32 ethcmd;
1633 int rc;
1634 u32 old_features;
1635
1636 if (!dev || !netif_device_present(dev))
1637 return -ENODEV;
1638
1639 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
1640 return -EFAULT;
1641
1642 if (!dev->ethtool_ops) {
1643 /* ETHTOOL_GDRVINFO does not require any driver support.
1644 * It is also unprivileged and does not change anything,
1645 * so we can take a shortcut to it. */
1646 if (ethcmd == ETHTOOL_GDRVINFO)
1647 return ethtool_get_drvinfo(dev, useraddr);
1648 else
1649 return -EOPNOTSUPP;
1650 }
1651
1652 /* Allow some commands to be done by anyone */
1653 switch (ethcmd) {
1654 case ETHTOOL_GSET:
1655 case ETHTOOL_GDRVINFO:
1656 case ETHTOOL_GMSGLVL:
1657 case ETHTOOL_GCOALESCE:
1658 case ETHTOOL_GRINGPARAM:
1659 case ETHTOOL_GPAUSEPARAM:
1660 case ETHTOOL_GRXCSUM:
1661 case ETHTOOL_GTXCSUM:
1662 case ETHTOOL_GSG:
1663 case ETHTOOL_GSTRINGS:
1664 case ETHTOOL_GTSO:
1665 case ETHTOOL_GPERMADDR:
1666 case ETHTOOL_GUFO:
1667 case ETHTOOL_GGSO:
1668 case ETHTOOL_GGRO:
1669 case ETHTOOL_GFLAGS:
1670 case ETHTOOL_GPFLAGS:
1671 case ETHTOOL_GRXFH:
1672 case ETHTOOL_GRXRINGS:
1673 case ETHTOOL_GRXCLSRLCNT:
1674 case ETHTOOL_GRXCLSRULE:
1675 case ETHTOOL_GRXCLSRLALL:
1676 case ETHTOOL_GFEATURES:
1677 break;
1678 default:
1679 if (!capable(CAP_NET_ADMIN))
1680 return -EPERM;
1681 }
1682
1683 if (dev->ethtool_ops->begin) {
1684 rc = dev->ethtool_ops->begin(dev);
1685 if (rc < 0)
1686 return rc;
1687 }
1688 old_features = dev->features;
1689
1690 switch (ethcmd) {
1691 case ETHTOOL_GSET:
1692 rc = ethtool_get_settings(dev, useraddr);
1693 break;
1694 case ETHTOOL_SSET:
1695 rc = ethtool_set_settings(dev, useraddr);
1696 break;
1697 case ETHTOOL_GDRVINFO:
1698 rc = ethtool_get_drvinfo(dev, useraddr);
1699 break;
1700 case ETHTOOL_GREGS:
1701 rc = ethtool_get_regs(dev, useraddr);
1702 break;
1703 case ETHTOOL_GWOL:
1704 rc = ethtool_get_wol(dev, useraddr);
1705 break;
1706 case ETHTOOL_SWOL:
1707 rc = ethtool_set_wol(dev, useraddr);
1708 break;
1709 case ETHTOOL_GMSGLVL:
1710 rc = ethtool_get_value(dev, useraddr, ethcmd,
1711 dev->ethtool_ops->get_msglevel);
1712 break;
1713 case ETHTOOL_SMSGLVL:
1714 rc = ethtool_set_value_void(dev, useraddr,
1715 dev->ethtool_ops->set_msglevel);
1716 break;
1717 case ETHTOOL_NWAY_RST:
1718 rc = ethtool_nway_reset(dev);
1719 break;
1720 case ETHTOOL_GLINK:
1721 rc = ethtool_get_link(dev, useraddr);
1722 break;
1723 case ETHTOOL_GEEPROM:
1724 rc = ethtool_get_eeprom(dev, useraddr);
1725 break;
1726 case ETHTOOL_SEEPROM:
1727 rc = ethtool_set_eeprom(dev, useraddr);
1728 break;
1729 case ETHTOOL_GCOALESCE:
1730 rc = ethtool_get_coalesce(dev, useraddr);
1731 break;
1732 case ETHTOOL_SCOALESCE:
1733 rc = ethtool_set_coalesce(dev, useraddr);
1734 break;
1735 case ETHTOOL_GRINGPARAM:
1736 rc = ethtool_get_ringparam(dev, useraddr);
1737 break;
1738 case ETHTOOL_SRINGPARAM:
1739 rc = ethtool_set_ringparam(dev, useraddr);
1740 break;
1741 case ETHTOOL_GPAUSEPARAM:
1742 rc = ethtool_get_pauseparam(dev, useraddr);
1743 break;
1744 case ETHTOOL_SPAUSEPARAM:
1745 rc = ethtool_set_pauseparam(dev, useraddr);
1746 break;
1747 case ETHTOOL_TEST:
1748 rc = ethtool_self_test(dev, useraddr);
1749 break;
1750 case ETHTOOL_GSTRINGS:
1751 rc = ethtool_get_strings(dev, useraddr);
1752 break;
1753 case ETHTOOL_PHYS_ID:
1754 rc = ethtool_phys_id(dev, useraddr);
1755 break;
1756 case ETHTOOL_GSTATS:
1757 rc = ethtool_get_stats(dev, useraddr);
1758 break;
1759 case ETHTOOL_GPERMADDR:
1760 rc = ethtool_get_perm_addr(dev, useraddr);
1761 break;
1762 case ETHTOOL_GFLAGS:
1763 rc = ethtool_get_value(dev, useraddr, ethcmd,
1764 (dev->ethtool_ops->get_flags ?
1765 dev->ethtool_ops->get_flags :
1766 ethtool_op_get_flags));
1767 break;
1768 case ETHTOOL_SFLAGS:
1769 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1770 break;
1771 case ETHTOOL_GPFLAGS:
1772 rc = ethtool_get_value(dev, useraddr, ethcmd,
1773 dev->ethtool_ops->get_priv_flags);
1774 break;
1775 case ETHTOOL_SPFLAGS:
1776 rc = ethtool_set_value(dev, useraddr,
1777 dev->ethtool_ops->set_priv_flags);
1778 break;
1779 case ETHTOOL_GRXFH:
1780 case ETHTOOL_GRXRINGS:
1781 case ETHTOOL_GRXCLSRLCNT:
1782 case ETHTOOL_GRXCLSRULE:
1783 case ETHTOOL_GRXCLSRLALL:
1784 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1785 break;
1786 case ETHTOOL_SRXFH:
1787 case ETHTOOL_SRXCLSRLDEL:
1788 case ETHTOOL_SRXCLSRLINS:
1789 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1790 break;
1791 case ETHTOOL_FLASHDEV:
1792 rc = ethtool_flash_device(dev, useraddr);
1793 break;
1794 case ETHTOOL_RESET:
1795 rc = ethtool_reset(dev, useraddr);
1796 break;
1797 case ETHTOOL_SRXNTUPLE:
1798 rc = ethtool_set_rx_ntuple(dev, useraddr);
1799 break;
1800 case ETHTOOL_GSSET_INFO:
1801 rc = ethtool_get_sset_info(dev, useraddr);
1802 break;
1803 case ETHTOOL_GRXFHINDIR:
1804 rc = ethtool_get_rxfh_indir(dev, useraddr);
1805 break;
1806 case ETHTOOL_SRXFHINDIR:
1807 rc = ethtool_set_rxfh_indir(dev, useraddr);
1808 break;
1809 case ETHTOOL_GFEATURES:
1810 rc = ethtool_get_features(dev, useraddr);
1811 break;
1812 case ETHTOOL_SFEATURES:
1813 rc = ethtool_set_features(dev, useraddr);
1814 break;
1815 case ETHTOOL_GTXCSUM:
1816 case ETHTOOL_GRXCSUM:
1817 case ETHTOOL_GSG:
1818 case ETHTOOL_GTSO:
1819 case ETHTOOL_GUFO:
1820 case ETHTOOL_GGSO:
1821 case ETHTOOL_GGRO:
1822 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1823 break;
1824 case ETHTOOL_STXCSUM:
1825 case ETHTOOL_SRXCSUM:
1826 case ETHTOOL_SSG:
1827 case ETHTOOL_STSO:
1828 case ETHTOOL_SUFO:
1829 case ETHTOOL_SGSO:
1830 case ETHTOOL_SGRO:
1831 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1832 break;
1833 case ETHTOOL_GCHANNELS:
1834 rc = ethtool_get_channels(dev, useraddr);
1835 break;
1836 case ETHTOOL_SCHANNELS:
1837 rc = ethtool_set_channels(dev, useraddr);
1838 break;
1839 case ETHTOOL_SET_DUMP:
1840 rc = ethtool_set_dump(dev, useraddr);
1841 break;
1842 case ETHTOOL_GET_DUMP_FLAG:
1843 rc = ethtool_get_dump_flag(dev, useraddr);
1844 break;
1845 case ETHTOOL_GET_DUMP_DATA:
1846 rc = ethtool_get_dump_data(dev, useraddr);
1847 break;
1848 default:
1849 rc = -EOPNOTSUPP;
1850 }
1851
1852 if (dev->ethtool_ops->complete)
1853 dev->ethtool_ops->complete(dev);
1854
1855 if (old_features != dev->features)
1856 netdev_features_change(dev);
1857
1858 return rc;
1859}
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#include <linux/net.h>
29
30/*
31 * Some useful ethtool_ops methods that're device independent.
32 * If we find that all drivers want to do the same thing here,
33 * we can turn these into dev_() function calls.
34 */
35
36u32 ethtool_op_get_link(struct net_device *dev)
37{
38 return netif_carrier_ok(dev) ? 1 : 0;
39}
40EXPORT_SYMBOL(ethtool_op_get_link);
41
42int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
43{
44 info->so_timestamping =
45 SOF_TIMESTAMPING_TX_SOFTWARE |
46 SOF_TIMESTAMPING_RX_SOFTWARE |
47 SOF_TIMESTAMPING_SOFTWARE;
48 info->phc_index = -1;
49 return 0;
50}
51EXPORT_SYMBOL(ethtool_op_get_ts_info);
52
53/* Handlers for each ethtool command */
54
55#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
56
57static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
58 [NETIF_F_SG_BIT] = "tx-scatter-gather",
59 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
60 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
61 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
62 [NETIF_F_HIGHDMA_BIT] = "highdma",
63 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
64 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
65
66 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
68 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
69 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
70 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
71 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
72 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
73 [NETIF_F_LLTX_BIT] = "tx-lockless",
74 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
75 [NETIF_F_GRO_BIT] = "rx-gro",
76 [NETIF_F_LRO_BIT] = "rx-lro",
77
78 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
79 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
82 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
83 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
85 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
86 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
87 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
88 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
91 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
92 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
93
94 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
95 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
96 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
97 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
98 [NETIF_F_RXHASH_BIT] = "rx-hashing",
99 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
100 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
101 [NETIF_F_LOOPBACK_BIT] = "loopback",
102 [NETIF_F_RXFCS_BIT] = "rx-fcs",
103 [NETIF_F_RXALL_BIT] = "rx-all",
104 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
105 [NETIF_F_BUSY_POLL_BIT] = "busy-poll",
106 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
107};
108
109static const char
110rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
111 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
112 [ETH_RSS_HASH_XOR_BIT] = "xor",
113};
114
115static const char
116tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
117 [ETHTOOL_ID_UNSPEC] = "Unspec",
118 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
119 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
120};
121
122static const char
123phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
124 [ETHTOOL_ID_UNSPEC] = "Unspec",
125 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
126};
127
128static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
129{
130 struct ethtool_gfeatures cmd = {
131 .cmd = ETHTOOL_GFEATURES,
132 .size = ETHTOOL_DEV_FEATURE_WORDS,
133 };
134 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
135 u32 __user *sizeaddr;
136 u32 copy_size;
137 int i;
138
139 /* in case feature bits run out again */
140 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
141
142 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
143 features[i].available = (u32)(dev->hw_features >> (32 * i));
144 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
145 features[i].active = (u32)(dev->features >> (32 * i));
146 features[i].never_changed =
147 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
148 }
149
150 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
151 if (get_user(copy_size, sizeaddr))
152 return -EFAULT;
153
154 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
155 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
156
157 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
158 return -EFAULT;
159 useraddr += sizeof(cmd);
160 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
161 return -EFAULT;
162
163 return 0;
164}
165
166static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
167{
168 struct ethtool_sfeatures cmd;
169 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
170 netdev_features_t wanted = 0, valid = 0;
171 int i, ret = 0;
172
173 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
174 return -EFAULT;
175 useraddr += sizeof(cmd);
176
177 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
178 return -EINVAL;
179
180 if (copy_from_user(features, useraddr, sizeof(features)))
181 return -EFAULT;
182
183 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
184 valid |= (netdev_features_t)features[i].valid << (32 * i);
185 wanted |= (netdev_features_t)features[i].requested << (32 * i);
186 }
187
188 if (valid & ~NETIF_F_ETHTOOL_BITS)
189 return -EINVAL;
190
191 if (valid & ~dev->hw_features) {
192 valid &= dev->hw_features;
193 ret |= ETHTOOL_F_UNSUPPORTED;
194 }
195
196 dev->wanted_features &= ~valid;
197 dev->wanted_features |= wanted & valid;
198 __netdev_update_features(dev);
199
200 if ((dev->wanted_features ^ dev->features) & valid)
201 ret |= ETHTOOL_F_WISH;
202
203 return ret;
204}
205
206static int phy_get_sset_count(struct phy_device *phydev)
207{
208 int ret;
209
210 if (phydev->drv->get_sset_count &&
211 phydev->drv->get_strings &&
212 phydev->drv->get_stats) {
213 mutex_lock(&phydev->lock);
214 ret = phydev->drv->get_sset_count(phydev);
215 mutex_unlock(&phydev->lock);
216
217 return ret;
218 }
219
220 return -EOPNOTSUPP;
221}
222
223static int __ethtool_get_sset_count(struct net_device *dev, int sset)
224{
225 const struct ethtool_ops *ops = dev->ethtool_ops;
226
227 if (sset == ETH_SS_FEATURES)
228 return ARRAY_SIZE(netdev_features_strings);
229
230 if (sset == ETH_SS_RSS_HASH_FUNCS)
231 return ARRAY_SIZE(rss_hash_func_strings);
232
233 if (sset == ETH_SS_TUNABLES)
234 return ARRAY_SIZE(tunable_strings);
235
236 if (sset == ETH_SS_PHY_TUNABLES)
237 return ARRAY_SIZE(phy_tunable_strings);
238
239 if (sset == ETH_SS_PHY_STATS) {
240 if (dev->phydev)
241 return phy_get_sset_count(dev->phydev);
242 else
243 return -EOPNOTSUPP;
244 }
245
246 if (ops->get_sset_count && ops->get_strings)
247 return ops->get_sset_count(dev, sset);
248 else
249 return -EOPNOTSUPP;
250}
251
252static void __ethtool_get_strings(struct net_device *dev,
253 u32 stringset, u8 *data)
254{
255 const struct ethtool_ops *ops = dev->ethtool_ops;
256
257 if (stringset == ETH_SS_FEATURES)
258 memcpy(data, netdev_features_strings,
259 sizeof(netdev_features_strings));
260 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
261 memcpy(data, rss_hash_func_strings,
262 sizeof(rss_hash_func_strings));
263 else if (stringset == ETH_SS_TUNABLES)
264 memcpy(data, tunable_strings, sizeof(tunable_strings));
265 else if (stringset == ETH_SS_PHY_TUNABLES)
266 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
267 else if (stringset == ETH_SS_PHY_STATS) {
268 struct phy_device *phydev = dev->phydev;
269
270 if (phydev) {
271 mutex_lock(&phydev->lock);
272 phydev->drv->get_strings(phydev, data);
273 mutex_unlock(&phydev->lock);
274 } else {
275 return;
276 }
277 } else
278 /* ops->get_strings is valid because checked earlier */
279 ops->get_strings(dev, stringset, data);
280}
281
282static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
283{
284 /* feature masks of legacy discrete ethtool ops */
285
286 switch (eth_cmd) {
287 case ETHTOOL_GTXCSUM:
288 case ETHTOOL_STXCSUM:
289 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
290 case ETHTOOL_GRXCSUM:
291 case ETHTOOL_SRXCSUM:
292 return NETIF_F_RXCSUM;
293 case ETHTOOL_GSG:
294 case ETHTOOL_SSG:
295 return NETIF_F_SG;
296 case ETHTOOL_GTSO:
297 case ETHTOOL_STSO:
298 return NETIF_F_ALL_TSO;
299 case ETHTOOL_GUFO:
300 case ETHTOOL_SUFO:
301 return NETIF_F_UFO;
302 case ETHTOOL_GGSO:
303 case ETHTOOL_SGSO:
304 return NETIF_F_GSO;
305 case ETHTOOL_GGRO:
306 case ETHTOOL_SGRO:
307 return NETIF_F_GRO;
308 default:
309 BUG();
310 }
311}
312
313static int ethtool_get_one_feature(struct net_device *dev,
314 char __user *useraddr, u32 ethcmd)
315{
316 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
317 struct ethtool_value edata = {
318 .cmd = ethcmd,
319 .data = !!(dev->features & mask),
320 };
321
322 if (copy_to_user(useraddr, &edata, sizeof(edata)))
323 return -EFAULT;
324 return 0;
325}
326
327static int ethtool_set_one_feature(struct net_device *dev,
328 void __user *useraddr, u32 ethcmd)
329{
330 struct ethtool_value edata;
331 netdev_features_t mask;
332
333 if (copy_from_user(&edata, useraddr, sizeof(edata)))
334 return -EFAULT;
335
336 mask = ethtool_get_feature_mask(ethcmd);
337 mask &= dev->hw_features;
338 if (!mask)
339 return -EOPNOTSUPP;
340
341 if (edata.data)
342 dev->wanted_features |= mask;
343 else
344 dev->wanted_features &= ~mask;
345
346 __netdev_update_features(dev);
347
348 return 0;
349}
350
351#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
352 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
353#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
354 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
355 NETIF_F_RXHASH)
356
357static u32 __ethtool_get_flags(struct net_device *dev)
358{
359 u32 flags = 0;
360
361 if (dev->features & NETIF_F_LRO)
362 flags |= ETH_FLAG_LRO;
363 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
364 flags |= ETH_FLAG_RXVLAN;
365 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
366 flags |= ETH_FLAG_TXVLAN;
367 if (dev->features & NETIF_F_NTUPLE)
368 flags |= ETH_FLAG_NTUPLE;
369 if (dev->features & NETIF_F_RXHASH)
370 flags |= ETH_FLAG_RXHASH;
371
372 return flags;
373}
374
375static int __ethtool_set_flags(struct net_device *dev, u32 data)
376{
377 netdev_features_t features = 0, changed;
378
379 if (data & ~ETH_ALL_FLAGS)
380 return -EINVAL;
381
382 if (data & ETH_FLAG_LRO)
383 features |= NETIF_F_LRO;
384 if (data & ETH_FLAG_RXVLAN)
385 features |= NETIF_F_HW_VLAN_CTAG_RX;
386 if (data & ETH_FLAG_TXVLAN)
387 features |= NETIF_F_HW_VLAN_CTAG_TX;
388 if (data & ETH_FLAG_NTUPLE)
389 features |= NETIF_F_NTUPLE;
390 if (data & ETH_FLAG_RXHASH)
391 features |= NETIF_F_RXHASH;
392
393 /* allow changing only bits set in hw_features */
394 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
395 if (changed & ~dev->hw_features)
396 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
397
398 dev->wanted_features =
399 (dev->wanted_features & ~changed) | (features & changed);
400
401 __netdev_update_features(dev);
402
403 return 0;
404}
405
406void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
407 u32 legacy_u32)
408{
409 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
410 dst[0] = legacy_u32;
411}
412EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
413
414/* return false if src had higher bits set. lower bits always updated. */
415bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
416 const unsigned long *src)
417{
418 bool retval = true;
419
420 /* TODO: following test will soon always be true */
421 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
422 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
423
424 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
425 bitmap_fill(ext, 32);
426 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
427 if (bitmap_intersects(ext, src,
428 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
429 /* src mask goes beyond bit 31 */
430 retval = false;
431 }
432 }
433 *legacy_u32 = src[0];
434 return retval;
435}
436EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
437
438/* return false if legacy contained non-0 deprecated fields
439 * transceiver/maxtxpkt/maxrxpkt. rest of ksettings always updated
440 */
441static bool
442convert_legacy_settings_to_link_ksettings(
443 struct ethtool_link_ksettings *link_ksettings,
444 const struct ethtool_cmd *legacy_settings)
445{
446 bool retval = true;
447
448 memset(link_ksettings, 0, sizeof(*link_ksettings));
449
450 /* This is used to tell users that driver is still using these
451 * deprecated legacy fields, and they should not use
452 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
453 */
454 if (legacy_settings->transceiver ||
455 legacy_settings->maxtxpkt ||
456 legacy_settings->maxrxpkt)
457 retval = false;
458
459 ethtool_convert_legacy_u32_to_link_mode(
460 link_ksettings->link_modes.supported,
461 legacy_settings->supported);
462 ethtool_convert_legacy_u32_to_link_mode(
463 link_ksettings->link_modes.advertising,
464 legacy_settings->advertising);
465 ethtool_convert_legacy_u32_to_link_mode(
466 link_ksettings->link_modes.lp_advertising,
467 legacy_settings->lp_advertising);
468 link_ksettings->base.speed
469 = ethtool_cmd_speed(legacy_settings);
470 link_ksettings->base.duplex
471 = legacy_settings->duplex;
472 link_ksettings->base.port
473 = legacy_settings->port;
474 link_ksettings->base.phy_address
475 = legacy_settings->phy_address;
476 link_ksettings->base.autoneg
477 = legacy_settings->autoneg;
478 link_ksettings->base.mdio_support
479 = legacy_settings->mdio_support;
480 link_ksettings->base.eth_tp_mdix
481 = legacy_settings->eth_tp_mdix;
482 link_ksettings->base.eth_tp_mdix_ctrl
483 = legacy_settings->eth_tp_mdix_ctrl;
484 return retval;
485}
486
487/* return false if ksettings link modes had higher bits
488 * set. legacy_settings always updated (best effort)
489 */
490static bool
491convert_link_ksettings_to_legacy_settings(
492 struct ethtool_cmd *legacy_settings,
493 const struct ethtool_link_ksettings *link_ksettings)
494{
495 bool retval = true;
496
497 memset(legacy_settings, 0, sizeof(*legacy_settings));
498 /* this also clears the deprecated fields in legacy structure:
499 * __u8 transceiver;
500 * __u32 maxtxpkt;
501 * __u32 maxrxpkt;
502 */
503
504 retval &= ethtool_convert_link_mode_to_legacy_u32(
505 &legacy_settings->supported,
506 link_ksettings->link_modes.supported);
507 retval &= ethtool_convert_link_mode_to_legacy_u32(
508 &legacy_settings->advertising,
509 link_ksettings->link_modes.advertising);
510 retval &= ethtool_convert_link_mode_to_legacy_u32(
511 &legacy_settings->lp_advertising,
512 link_ksettings->link_modes.lp_advertising);
513 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
514 legacy_settings->duplex
515 = link_ksettings->base.duplex;
516 legacy_settings->port
517 = link_ksettings->base.port;
518 legacy_settings->phy_address
519 = link_ksettings->base.phy_address;
520 legacy_settings->autoneg
521 = link_ksettings->base.autoneg;
522 legacy_settings->mdio_support
523 = link_ksettings->base.mdio_support;
524 legacy_settings->eth_tp_mdix
525 = link_ksettings->base.eth_tp_mdix;
526 legacy_settings->eth_tp_mdix_ctrl
527 = link_ksettings->base.eth_tp_mdix_ctrl;
528 return retval;
529}
530
531/* number of 32-bit words to store the user's link mode bitmaps */
532#define __ETHTOOL_LINK_MODE_MASK_NU32 \
533 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
534
535/* layout of the struct passed from/to userland */
536struct ethtool_link_usettings {
537 struct ethtool_link_settings base;
538 struct {
539 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
540 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
541 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
542 } link_modes;
543};
544
545/* Internal kernel helper to query a device ethtool_link_settings.
546 *
547 * Backward compatibility note: for compatibility with legacy drivers
548 * that implement only the ethtool_cmd API, this has to work with both
549 * drivers implementing get_link_ksettings API and drivers
550 * implementing get_settings API. When drivers implement get_settings
551 * and report ethtool_cmd deprecated fields
552 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
553 * because the resulting struct ethtool_link_settings does not report them.
554 */
555int __ethtool_get_link_ksettings(struct net_device *dev,
556 struct ethtool_link_ksettings *link_ksettings)
557{
558 int err;
559 struct ethtool_cmd cmd;
560
561 ASSERT_RTNL();
562
563 if (dev->ethtool_ops->get_link_ksettings) {
564 memset(link_ksettings, 0, sizeof(*link_ksettings));
565 return dev->ethtool_ops->get_link_ksettings(dev,
566 link_ksettings);
567 }
568
569 /* driver doesn't support %ethtool_link_ksettings API. revert to
570 * legacy %ethtool_cmd API, unless it's not supported either.
571 * TODO: remove when ethtool_ops::get_settings disappears internally
572 */
573 if (!dev->ethtool_ops->get_settings)
574 return -EOPNOTSUPP;
575
576 memset(&cmd, 0, sizeof(cmd));
577 cmd.cmd = ETHTOOL_GSET;
578 err = dev->ethtool_ops->get_settings(dev, &cmd);
579 if (err < 0)
580 return err;
581
582 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
583 */
584 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
585 return err;
586}
587EXPORT_SYMBOL(__ethtool_get_link_ksettings);
588
589/* convert ethtool_link_usettings in user space to a kernel internal
590 * ethtool_link_ksettings. return 0 on success, errno on error.
591 */
592static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
593 const void __user *from)
594{
595 struct ethtool_link_usettings link_usettings;
596
597 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
598 return -EFAULT;
599
600 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
601 bitmap_from_u32array(to->link_modes.supported,
602 __ETHTOOL_LINK_MODE_MASK_NBITS,
603 link_usettings.link_modes.supported,
604 __ETHTOOL_LINK_MODE_MASK_NU32);
605 bitmap_from_u32array(to->link_modes.advertising,
606 __ETHTOOL_LINK_MODE_MASK_NBITS,
607 link_usettings.link_modes.advertising,
608 __ETHTOOL_LINK_MODE_MASK_NU32);
609 bitmap_from_u32array(to->link_modes.lp_advertising,
610 __ETHTOOL_LINK_MODE_MASK_NBITS,
611 link_usettings.link_modes.lp_advertising,
612 __ETHTOOL_LINK_MODE_MASK_NU32);
613
614 return 0;
615}
616
617/* convert a kernel internal ethtool_link_ksettings to
618 * ethtool_link_usettings in user space. return 0 on success, errno on
619 * error.
620 */
621static int
622store_link_ksettings_for_user(void __user *to,
623 const struct ethtool_link_ksettings *from)
624{
625 struct ethtool_link_usettings link_usettings;
626
627 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
628 bitmap_to_u32array(link_usettings.link_modes.supported,
629 __ETHTOOL_LINK_MODE_MASK_NU32,
630 from->link_modes.supported,
631 __ETHTOOL_LINK_MODE_MASK_NBITS);
632 bitmap_to_u32array(link_usettings.link_modes.advertising,
633 __ETHTOOL_LINK_MODE_MASK_NU32,
634 from->link_modes.advertising,
635 __ETHTOOL_LINK_MODE_MASK_NBITS);
636 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
637 __ETHTOOL_LINK_MODE_MASK_NU32,
638 from->link_modes.lp_advertising,
639 __ETHTOOL_LINK_MODE_MASK_NBITS);
640
641 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
642 return -EFAULT;
643
644 return 0;
645}
646
647/* Query device for its ethtool_link_settings.
648 *
649 * Backward compatibility note: this function must fail when driver
650 * does not implement ethtool::get_link_ksettings, even if legacy
651 * ethtool_ops::get_settings is implemented. This tells new versions
652 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
653 * this driver, so that they can correctly access the ethtool_cmd
654 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
655 * implements ethtool_ops::get_settings anymore.
656 */
657static int ethtool_get_link_ksettings(struct net_device *dev,
658 void __user *useraddr)
659{
660 int err = 0;
661 struct ethtool_link_ksettings link_ksettings;
662
663 ASSERT_RTNL();
664
665 if (!dev->ethtool_ops->get_link_ksettings)
666 return -EOPNOTSUPP;
667
668 /* handle bitmap nbits handshake */
669 if (copy_from_user(&link_ksettings.base, useraddr,
670 sizeof(link_ksettings.base)))
671 return -EFAULT;
672
673 if (__ETHTOOL_LINK_MODE_MASK_NU32
674 != link_ksettings.base.link_mode_masks_nwords) {
675 /* wrong link mode nbits requested */
676 memset(&link_ksettings, 0, sizeof(link_ksettings));
677 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
678 /* send back number of words required as negative val */
679 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
680 "need too many bits for link modes!");
681 link_ksettings.base.link_mode_masks_nwords
682 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
683
684 /* copy the base fields back to user, not the link
685 * mode bitmaps
686 */
687 if (copy_to_user(useraddr, &link_ksettings.base,
688 sizeof(link_ksettings.base)))
689 return -EFAULT;
690
691 return 0;
692 }
693
694 /* handshake successful: user/kernel agree on
695 * link_mode_masks_nwords
696 */
697
698 memset(&link_ksettings, 0, sizeof(link_ksettings));
699 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
700 if (err < 0)
701 return err;
702
703 /* make sure we tell the right values to user */
704 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
705 link_ksettings.base.link_mode_masks_nwords
706 = __ETHTOOL_LINK_MODE_MASK_NU32;
707
708 return store_link_ksettings_for_user(useraddr, &link_ksettings);
709}
710
711/* Update device ethtool_link_settings.
712 *
713 * Backward compatibility note: this function must fail when driver
714 * does not implement ethtool::set_link_ksettings, even if legacy
715 * ethtool_ops::set_settings is implemented. This tells new versions
716 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
717 * this driver, so that they can correctly update the ethtool_cmd
718 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
719 * implements ethtool_ops::get_settings anymore.
720 */
721static int ethtool_set_link_ksettings(struct net_device *dev,
722 void __user *useraddr)
723{
724 int err;
725 struct ethtool_link_ksettings link_ksettings;
726
727 ASSERT_RTNL();
728
729 if (!dev->ethtool_ops->set_link_ksettings)
730 return -EOPNOTSUPP;
731
732 /* make sure nbits field has expected value */
733 if (copy_from_user(&link_ksettings.base, useraddr,
734 sizeof(link_ksettings.base)))
735 return -EFAULT;
736
737 if (__ETHTOOL_LINK_MODE_MASK_NU32
738 != link_ksettings.base.link_mode_masks_nwords)
739 return -EINVAL;
740
741 /* copy the whole structure, now that we know it has expected
742 * format
743 */
744 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
745 if (err)
746 return err;
747
748 /* re-check nwords field, just in case */
749 if (__ETHTOOL_LINK_MODE_MASK_NU32
750 != link_ksettings.base.link_mode_masks_nwords)
751 return -EINVAL;
752
753 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
754}
755
756static void
757warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
758{
759 char name[sizeof(current->comm)];
760
761 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
762 get_task_comm(name, current), details);
763}
764
765/* Query device for its ethtool_cmd settings.
766 *
767 * Backward compatibility note: for compatibility with legacy ethtool,
768 * this has to work with both drivers implementing get_link_ksettings
769 * API and drivers implementing get_settings API. When drivers
770 * implement get_link_ksettings and report higher link mode bits, a
771 * kernel warning is logged once (with name of 1st driver/device) to
772 * recommend user to upgrade ethtool, but the command is successful
773 * (only the lower link mode bits reported back to user).
774 */
775static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
776{
777 struct ethtool_cmd cmd;
778
779 ASSERT_RTNL();
780
781 if (dev->ethtool_ops->get_link_ksettings) {
782 /* First, use link_ksettings API if it is supported */
783 int err;
784 struct ethtool_link_ksettings link_ksettings;
785
786 memset(&link_ksettings, 0, sizeof(link_ksettings));
787 err = dev->ethtool_ops->get_link_ksettings(dev,
788 &link_ksettings);
789 if (err < 0)
790 return err;
791 if (!convert_link_ksettings_to_legacy_settings(&cmd,
792 &link_ksettings))
793 warn_incomplete_ethtool_legacy_settings_conversion(
794 "link modes are only partially reported");
795
796 /* send a sensible cmd tag back to user */
797 cmd.cmd = ETHTOOL_GSET;
798 } else {
799 /* driver doesn't support %ethtool_link_ksettings
800 * API. revert to legacy %ethtool_cmd API, unless it's
801 * not supported either.
802 */
803 int err;
804
805 if (!dev->ethtool_ops->get_settings)
806 return -EOPNOTSUPP;
807
808 memset(&cmd, 0, sizeof(cmd));
809 cmd.cmd = ETHTOOL_GSET;
810 err = dev->ethtool_ops->get_settings(dev, &cmd);
811 if (err < 0)
812 return err;
813 }
814
815 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
816 return -EFAULT;
817
818 return 0;
819}
820
821/* Update device link settings with given ethtool_cmd.
822 *
823 * Backward compatibility note: for compatibility with legacy ethtool,
824 * this has to work with both drivers implementing set_link_ksettings
825 * API and drivers implementing set_settings API. When drivers
826 * implement set_link_ksettings and user's request updates deprecated
827 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
828 * warning is logged once (with name of 1st driver/device) to
829 * recommend user to upgrade ethtool, and the request is rejected.
830 */
831static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
832{
833 struct ethtool_cmd cmd;
834
835 ASSERT_RTNL();
836
837 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
838 return -EFAULT;
839
840 /* first, try new %ethtool_link_ksettings API. */
841 if (dev->ethtool_ops->set_link_ksettings) {
842 struct ethtool_link_ksettings link_ksettings;
843
844 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
845 &cmd))
846 return -EINVAL;
847
848 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
849 link_ksettings.base.link_mode_masks_nwords
850 = __ETHTOOL_LINK_MODE_MASK_NU32;
851 return dev->ethtool_ops->set_link_ksettings(dev,
852 &link_ksettings);
853 }
854
855 /* legacy %ethtool_cmd API */
856
857 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
858 * disappears internally
859 */
860
861 if (!dev->ethtool_ops->set_settings)
862 return -EOPNOTSUPP;
863
864 return dev->ethtool_ops->set_settings(dev, &cmd);
865}
866
867static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
868 void __user *useraddr)
869{
870 struct ethtool_drvinfo info;
871 const struct ethtool_ops *ops = dev->ethtool_ops;
872
873 memset(&info, 0, sizeof(info));
874 info.cmd = ETHTOOL_GDRVINFO;
875 if (ops->get_drvinfo) {
876 ops->get_drvinfo(dev, &info);
877 } else if (dev->dev.parent && dev->dev.parent->driver) {
878 strlcpy(info.bus_info, dev_name(dev->dev.parent),
879 sizeof(info.bus_info));
880 strlcpy(info.driver, dev->dev.parent->driver->name,
881 sizeof(info.driver));
882 } else {
883 return -EOPNOTSUPP;
884 }
885
886 /*
887 * this method of obtaining string set info is deprecated;
888 * Use ETHTOOL_GSSET_INFO instead.
889 */
890 if (ops->get_sset_count) {
891 int rc;
892
893 rc = ops->get_sset_count(dev, ETH_SS_TEST);
894 if (rc >= 0)
895 info.testinfo_len = rc;
896 rc = ops->get_sset_count(dev, ETH_SS_STATS);
897 if (rc >= 0)
898 info.n_stats = rc;
899 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
900 if (rc >= 0)
901 info.n_priv_flags = rc;
902 }
903 if (ops->get_regs_len)
904 info.regdump_len = ops->get_regs_len(dev);
905 if (ops->get_eeprom_len)
906 info.eedump_len = ops->get_eeprom_len(dev);
907
908 if (copy_to_user(useraddr, &info, sizeof(info)))
909 return -EFAULT;
910 return 0;
911}
912
913static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
914 void __user *useraddr)
915{
916 struct ethtool_sset_info info;
917 u64 sset_mask;
918 int i, idx = 0, n_bits = 0, ret, rc;
919 u32 *info_buf = NULL;
920
921 if (copy_from_user(&info, useraddr, sizeof(info)))
922 return -EFAULT;
923
924 /* store copy of mask, because we zero struct later on */
925 sset_mask = info.sset_mask;
926 if (!sset_mask)
927 return 0;
928
929 /* calculate size of return buffer */
930 n_bits = hweight64(sset_mask);
931
932 memset(&info, 0, sizeof(info));
933 info.cmd = ETHTOOL_GSSET_INFO;
934
935 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
936 if (!info_buf)
937 return -ENOMEM;
938
939 /*
940 * fill return buffer based on input bitmask and successful
941 * get_sset_count return
942 */
943 for (i = 0; i < 64; i++) {
944 if (!(sset_mask & (1ULL << i)))
945 continue;
946
947 rc = __ethtool_get_sset_count(dev, i);
948 if (rc >= 0) {
949 info.sset_mask |= (1ULL << i);
950 info_buf[idx++] = rc;
951 }
952 }
953
954 ret = -EFAULT;
955 if (copy_to_user(useraddr, &info, sizeof(info)))
956 goto out;
957
958 useraddr += offsetof(struct ethtool_sset_info, data);
959 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
960 goto out;
961
962 ret = 0;
963
964out:
965 kfree(info_buf);
966 return ret;
967}
968
969static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
970 u32 cmd, void __user *useraddr)
971{
972 struct ethtool_rxnfc info;
973 size_t info_size = sizeof(info);
974 int rc;
975
976 if (!dev->ethtool_ops->set_rxnfc)
977 return -EOPNOTSUPP;
978
979 /* struct ethtool_rxnfc was originally defined for
980 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
981 * members. User-space might still be using that
982 * definition. */
983 if (cmd == ETHTOOL_SRXFH)
984 info_size = (offsetof(struct ethtool_rxnfc, data) +
985 sizeof(info.data));
986
987 if (copy_from_user(&info, useraddr, info_size))
988 return -EFAULT;
989
990 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
991 if (rc)
992 return rc;
993
994 if (cmd == ETHTOOL_SRXCLSRLINS &&
995 copy_to_user(useraddr, &info, info_size))
996 return -EFAULT;
997
998 return 0;
999}
1000
1001static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
1002 u32 cmd, void __user *useraddr)
1003{
1004 struct ethtool_rxnfc info;
1005 size_t info_size = sizeof(info);
1006 const struct ethtool_ops *ops = dev->ethtool_ops;
1007 int ret;
1008 void *rule_buf = NULL;
1009
1010 if (!ops->get_rxnfc)
1011 return -EOPNOTSUPP;
1012
1013 /* struct ethtool_rxnfc was originally defined for
1014 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1015 * members. User-space might still be using that
1016 * definition. */
1017 if (cmd == ETHTOOL_GRXFH)
1018 info_size = (offsetof(struct ethtool_rxnfc, data) +
1019 sizeof(info.data));
1020
1021 if (copy_from_user(&info, useraddr, info_size))
1022 return -EFAULT;
1023
1024 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1025 if (info.rule_cnt > 0) {
1026 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1027 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1028 GFP_USER);
1029 if (!rule_buf)
1030 return -ENOMEM;
1031 }
1032 }
1033
1034 ret = ops->get_rxnfc(dev, &info, rule_buf);
1035 if (ret < 0)
1036 goto err_out;
1037
1038 ret = -EFAULT;
1039 if (copy_to_user(useraddr, &info, info_size))
1040 goto err_out;
1041
1042 if (rule_buf) {
1043 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1044 if (copy_to_user(useraddr, rule_buf,
1045 info.rule_cnt * sizeof(u32)))
1046 goto err_out;
1047 }
1048 ret = 0;
1049
1050err_out:
1051 kfree(rule_buf);
1052
1053 return ret;
1054}
1055
1056static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1057 struct ethtool_rxnfc *rx_rings,
1058 u32 size)
1059{
1060 int i;
1061
1062 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1063 return -EFAULT;
1064
1065 /* Validate ring indices */
1066 for (i = 0; i < size; i++)
1067 if (indir[i] >= rx_rings->data)
1068 return -EINVAL;
1069
1070 return 0;
1071}
1072
1073u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1074
1075void netdev_rss_key_fill(void *buffer, size_t len)
1076{
1077 BUG_ON(len > sizeof(netdev_rss_key));
1078 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1079 memcpy(buffer, netdev_rss_key, len);
1080}
1081EXPORT_SYMBOL(netdev_rss_key_fill);
1082
1083static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1084{
1085 u32 dev_size, current_max = 0;
1086 u32 *indir;
1087 int ret;
1088
1089 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1090 !dev->ethtool_ops->get_rxfh)
1091 return -EOPNOTSUPP;
1092 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1093 if (dev_size == 0)
1094 return -EOPNOTSUPP;
1095
1096 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1097 if (!indir)
1098 return -ENOMEM;
1099
1100 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1101 if (ret)
1102 goto out;
1103
1104 while (dev_size--)
1105 current_max = max(current_max, indir[dev_size]);
1106
1107 *max = current_max;
1108
1109out:
1110 kfree(indir);
1111 return ret;
1112}
1113
1114static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1115 void __user *useraddr)
1116{
1117 u32 user_size, dev_size;
1118 u32 *indir;
1119 int ret;
1120
1121 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1122 !dev->ethtool_ops->get_rxfh)
1123 return -EOPNOTSUPP;
1124 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1125 if (dev_size == 0)
1126 return -EOPNOTSUPP;
1127
1128 if (copy_from_user(&user_size,
1129 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1130 sizeof(user_size)))
1131 return -EFAULT;
1132
1133 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1134 &dev_size, sizeof(dev_size)))
1135 return -EFAULT;
1136
1137 /* If the user buffer size is 0, this is just a query for the
1138 * device table size. Otherwise, if it's smaller than the
1139 * device table size it's an error.
1140 */
1141 if (user_size < dev_size)
1142 return user_size == 0 ? 0 : -EINVAL;
1143
1144 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1145 if (!indir)
1146 return -ENOMEM;
1147
1148 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1149 if (ret)
1150 goto out;
1151
1152 if (copy_to_user(useraddr +
1153 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1154 indir, dev_size * sizeof(indir[0])))
1155 ret = -EFAULT;
1156
1157out:
1158 kfree(indir);
1159 return ret;
1160}
1161
1162static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1163 void __user *useraddr)
1164{
1165 struct ethtool_rxnfc rx_rings;
1166 u32 user_size, dev_size, i;
1167 u32 *indir;
1168 const struct ethtool_ops *ops = dev->ethtool_ops;
1169 int ret;
1170 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1171
1172 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1173 !ops->get_rxnfc)
1174 return -EOPNOTSUPP;
1175
1176 dev_size = ops->get_rxfh_indir_size(dev);
1177 if (dev_size == 0)
1178 return -EOPNOTSUPP;
1179
1180 if (copy_from_user(&user_size,
1181 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1182 sizeof(user_size)))
1183 return -EFAULT;
1184
1185 if (user_size != 0 && user_size != dev_size)
1186 return -EINVAL;
1187
1188 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1189 if (!indir)
1190 return -ENOMEM;
1191
1192 rx_rings.cmd = ETHTOOL_GRXRINGS;
1193 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1194 if (ret)
1195 goto out;
1196
1197 if (user_size == 0) {
1198 for (i = 0; i < dev_size; i++)
1199 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1200 } else {
1201 ret = ethtool_copy_validate_indir(indir,
1202 useraddr + ringidx_offset,
1203 &rx_rings,
1204 dev_size);
1205 if (ret)
1206 goto out;
1207 }
1208
1209 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1210 if (ret)
1211 goto out;
1212
1213 /* indicate whether rxfh was set to default */
1214 if (user_size == 0)
1215 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1216 else
1217 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1218
1219out:
1220 kfree(indir);
1221 return ret;
1222}
1223
1224static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1225 void __user *useraddr)
1226{
1227 int ret;
1228 const struct ethtool_ops *ops = dev->ethtool_ops;
1229 u32 user_indir_size, user_key_size;
1230 u32 dev_indir_size = 0, dev_key_size = 0;
1231 struct ethtool_rxfh rxfh;
1232 u32 total_size;
1233 u32 indir_bytes;
1234 u32 *indir = NULL;
1235 u8 dev_hfunc = 0;
1236 u8 *hkey = NULL;
1237 u8 *rss_config;
1238
1239 if (!ops->get_rxfh)
1240 return -EOPNOTSUPP;
1241
1242 if (ops->get_rxfh_indir_size)
1243 dev_indir_size = ops->get_rxfh_indir_size(dev);
1244 if (ops->get_rxfh_key_size)
1245 dev_key_size = ops->get_rxfh_key_size(dev);
1246
1247 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1248 return -EFAULT;
1249 user_indir_size = rxfh.indir_size;
1250 user_key_size = rxfh.key_size;
1251
1252 /* Check that reserved fields are 0 for now */
1253 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1254 rxfh.rsvd8[2] || rxfh.rsvd32)
1255 return -EINVAL;
1256
1257 rxfh.indir_size = dev_indir_size;
1258 rxfh.key_size = dev_key_size;
1259 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1260 return -EFAULT;
1261
1262 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1263 (user_key_size && (user_key_size != dev_key_size)))
1264 return -EINVAL;
1265
1266 indir_bytes = user_indir_size * sizeof(indir[0]);
1267 total_size = indir_bytes + user_key_size;
1268 rss_config = kzalloc(total_size, GFP_USER);
1269 if (!rss_config)
1270 return -ENOMEM;
1271
1272 if (user_indir_size)
1273 indir = (u32 *)rss_config;
1274
1275 if (user_key_size)
1276 hkey = rss_config + indir_bytes;
1277
1278 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1279 if (ret)
1280 goto out;
1281
1282 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1283 &dev_hfunc, sizeof(rxfh.hfunc))) {
1284 ret = -EFAULT;
1285 } else if (copy_to_user(useraddr +
1286 offsetof(struct ethtool_rxfh, rss_config[0]),
1287 rss_config, total_size)) {
1288 ret = -EFAULT;
1289 }
1290out:
1291 kfree(rss_config);
1292
1293 return ret;
1294}
1295
1296static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1297 void __user *useraddr)
1298{
1299 int ret;
1300 const struct ethtool_ops *ops = dev->ethtool_ops;
1301 struct ethtool_rxnfc rx_rings;
1302 struct ethtool_rxfh rxfh;
1303 u32 dev_indir_size = 0, dev_key_size = 0, i;
1304 u32 *indir = NULL, indir_bytes = 0;
1305 u8 *hkey = NULL;
1306 u8 *rss_config;
1307 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1308
1309 if (!ops->get_rxnfc || !ops->set_rxfh)
1310 return -EOPNOTSUPP;
1311
1312 if (ops->get_rxfh_indir_size)
1313 dev_indir_size = ops->get_rxfh_indir_size(dev);
1314 if (ops->get_rxfh_key_size)
1315 dev_key_size = ops->get_rxfh_key_size(dev);
1316
1317 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1318 return -EFAULT;
1319
1320 /* Check that reserved fields are 0 for now */
1321 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1322 rxfh.rsvd8[2] || rxfh.rsvd32)
1323 return -EINVAL;
1324
1325 /* If either indir, hash key or function is valid, proceed further.
1326 * Must request at least one change: indir size, hash key or function.
1327 */
1328 if ((rxfh.indir_size &&
1329 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1330 rxfh.indir_size != dev_indir_size) ||
1331 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1332 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1333 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1334 return -EINVAL;
1335
1336 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1337 indir_bytes = dev_indir_size * sizeof(indir[0]);
1338
1339 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1340 if (!rss_config)
1341 return -ENOMEM;
1342
1343 rx_rings.cmd = ETHTOOL_GRXRINGS;
1344 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1345 if (ret)
1346 goto out;
1347
1348 /* rxfh.indir_size == 0 means reset the indir table to default.
1349 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1350 */
1351 if (rxfh.indir_size &&
1352 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1353 indir = (u32 *)rss_config;
1354 ret = ethtool_copy_validate_indir(indir,
1355 useraddr + rss_cfg_offset,
1356 &rx_rings,
1357 rxfh.indir_size);
1358 if (ret)
1359 goto out;
1360 } else if (rxfh.indir_size == 0) {
1361 indir = (u32 *)rss_config;
1362 for (i = 0; i < dev_indir_size; i++)
1363 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1364 }
1365
1366 if (rxfh.key_size) {
1367 hkey = rss_config + indir_bytes;
1368 if (copy_from_user(hkey,
1369 useraddr + rss_cfg_offset + indir_bytes,
1370 rxfh.key_size)) {
1371 ret = -EFAULT;
1372 goto out;
1373 }
1374 }
1375
1376 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1377 if (ret)
1378 goto out;
1379
1380 /* indicate whether rxfh was set to default */
1381 if (rxfh.indir_size == 0)
1382 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1383 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1384 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1385
1386out:
1387 kfree(rss_config);
1388 return ret;
1389}
1390
1391static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1392{
1393 struct ethtool_regs regs;
1394 const struct ethtool_ops *ops = dev->ethtool_ops;
1395 void *regbuf;
1396 int reglen, ret;
1397
1398 if (!ops->get_regs || !ops->get_regs_len)
1399 return -EOPNOTSUPP;
1400
1401 if (copy_from_user(®s, useraddr, sizeof(regs)))
1402 return -EFAULT;
1403
1404 reglen = ops->get_regs_len(dev);
1405 if (regs.len > reglen)
1406 regs.len = reglen;
1407
1408 regbuf = NULL;
1409 if (reglen) {
1410 regbuf = vzalloc(reglen);
1411 if (!regbuf)
1412 return -ENOMEM;
1413 }
1414
1415 ops->get_regs(dev, ®s, regbuf);
1416
1417 ret = -EFAULT;
1418 if (copy_to_user(useraddr, ®s, sizeof(regs)))
1419 goto out;
1420 useraddr += offsetof(struct ethtool_regs, data);
1421 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1422 goto out;
1423 ret = 0;
1424
1425 out:
1426 vfree(regbuf);
1427 return ret;
1428}
1429
1430static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1431{
1432 struct ethtool_value reset;
1433 int ret;
1434
1435 if (!dev->ethtool_ops->reset)
1436 return -EOPNOTSUPP;
1437
1438 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1439 return -EFAULT;
1440
1441 ret = dev->ethtool_ops->reset(dev, &reset.data);
1442 if (ret)
1443 return ret;
1444
1445 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1446 return -EFAULT;
1447 return 0;
1448}
1449
1450static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1451{
1452 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1453
1454 if (!dev->ethtool_ops->get_wol)
1455 return -EOPNOTSUPP;
1456
1457 dev->ethtool_ops->get_wol(dev, &wol);
1458
1459 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1460 return -EFAULT;
1461 return 0;
1462}
1463
1464static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1465{
1466 struct ethtool_wolinfo wol;
1467
1468 if (!dev->ethtool_ops->set_wol)
1469 return -EOPNOTSUPP;
1470
1471 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1472 return -EFAULT;
1473
1474 return dev->ethtool_ops->set_wol(dev, &wol);
1475}
1476
1477static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1478{
1479 struct ethtool_eee edata;
1480 int rc;
1481
1482 if (!dev->ethtool_ops->get_eee)
1483 return -EOPNOTSUPP;
1484
1485 memset(&edata, 0, sizeof(struct ethtool_eee));
1486 edata.cmd = ETHTOOL_GEEE;
1487 rc = dev->ethtool_ops->get_eee(dev, &edata);
1488
1489 if (rc)
1490 return rc;
1491
1492 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1493 return -EFAULT;
1494
1495 return 0;
1496}
1497
1498static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1499{
1500 struct ethtool_eee edata;
1501
1502 if (!dev->ethtool_ops->set_eee)
1503 return -EOPNOTSUPP;
1504
1505 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1506 return -EFAULT;
1507
1508 return dev->ethtool_ops->set_eee(dev, &edata);
1509}
1510
1511static int ethtool_nway_reset(struct net_device *dev)
1512{
1513 if (!dev->ethtool_ops->nway_reset)
1514 return -EOPNOTSUPP;
1515
1516 return dev->ethtool_ops->nway_reset(dev);
1517}
1518
1519static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1520{
1521 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1522
1523 if (!dev->ethtool_ops->get_link)
1524 return -EOPNOTSUPP;
1525
1526 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1527
1528 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1529 return -EFAULT;
1530 return 0;
1531}
1532
1533static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1534 int (*getter)(struct net_device *,
1535 struct ethtool_eeprom *, u8 *),
1536 u32 total_len)
1537{
1538 struct ethtool_eeprom eeprom;
1539 void __user *userbuf = useraddr + sizeof(eeprom);
1540 u32 bytes_remaining;
1541 u8 *data;
1542 int ret = 0;
1543
1544 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1545 return -EFAULT;
1546
1547 /* Check for wrap and zero */
1548 if (eeprom.offset + eeprom.len <= eeprom.offset)
1549 return -EINVAL;
1550
1551 /* Check for exceeding total eeprom len */
1552 if (eeprom.offset + eeprom.len > total_len)
1553 return -EINVAL;
1554
1555 data = kmalloc(PAGE_SIZE, GFP_USER);
1556 if (!data)
1557 return -ENOMEM;
1558
1559 bytes_remaining = eeprom.len;
1560 while (bytes_remaining > 0) {
1561 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1562
1563 ret = getter(dev, &eeprom, data);
1564 if (ret)
1565 break;
1566 if (copy_to_user(userbuf, data, eeprom.len)) {
1567 ret = -EFAULT;
1568 break;
1569 }
1570 userbuf += eeprom.len;
1571 eeprom.offset += eeprom.len;
1572 bytes_remaining -= eeprom.len;
1573 }
1574
1575 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1576 eeprom.offset -= eeprom.len;
1577 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1578 ret = -EFAULT;
1579
1580 kfree(data);
1581 return ret;
1582}
1583
1584static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1585{
1586 const struct ethtool_ops *ops = dev->ethtool_ops;
1587
1588 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1589 !ops->get_eeprom_len(dev))
1590 return -EOPNOTSUPP;
1591
1592 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1593 ops->get_eeprom_len(dev));
1594}
1595
1596static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1597{
1598 struct ethtool_eeprom eeprom;
1599 const struct ethtool_ops *ops = dev->ethtool_ops;
1600 void __user *userbuf = useraddr + sizeof(eeprom);
1601 u32 bytes_remaining;
1602 u8 *data;
1603 int ret = 0;
1604
1605 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1606 !ops->get_eeprom_len(dev))
1607 return -EOPNOTSUPP;
1608
1609 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1610 return -EFAULT;
1611
1612 /* Check for wrap and zero */
1613 if (eeprom.offset + eeprom.len <= eeprom.offset)
1614 return -EINVAL;
1615
1616 /* Check for exceeding total eeprom len */
1617 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1618 return -EINVAL;
1619
1620 data = kmalloc(PAGE_SIZE, GFP_USER);
1621 if (!data)
1622 return -ENOMEM;
1623
1624 bytes_remaining = eeprom.len;
1625 while (bytes_remaining > 0) {
1626 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1627
1628 if (copy_from_user(data, userbuf, eeprom.len)) {
1629 ret = -EFAULT;
1630 break;
1631 }
1632 ret = ops->set_eeprom(dev, &eeprom, data);
1633 if (ret)
1634 break;
1635 userbuf += eeprom.len;
1636 eeprom.offset += eeprom.len;
1637 bytes_remaining -= eeprom.len;
1638 }
1639
1640 kfree(data);
1641 return ret;
1642}
1643
1644static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1645 void __user *useraddr)
1646{
1647 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1648
1649 if (!dev->ethtool_ops->get_coalesce)
1650 return -EOPNOTSUPP;
1651
1652 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1653
1654 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1655 return -EFAULT;
1656 return 0;
1657}
1658
1659static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1660 void __user *useraddr)
1661{
1662 struct ethtool_coalesce coalesce;
1663
1664 if (!dev->ethtool_ops->set_coalesce)
1665 return -EOPNOTSUPP;
1666
1667 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1668 return -EFAULT;
1669
1670 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1671}
1672
1673static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1674{
1675 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1676
1677 if (!dev->ethtool_ops->get_ringparam)
1678 return -EOPNOTSUPP;
1679
1680 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1681
1682 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1683 return -EFAULT;
1684 return 0;
1685}
1686
1687static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1688{
1689 struct ethtool_ringparam ringparam;
1690
1691 if (!dev->ethtool_ops->set_ringparam)
1692 return -EOPNOTSUPP;
1693
1694 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1695 return -EFAULT;
1696
1697 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1698}
1699
1700static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1701 void __user *useraddr)
1702{
1703 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1704
1705 if (!dev->ethtool_ops->get_channels)
1706 return -EOPNOTSUPP;
1707
1708 dev->ethtool_ops->get_channels(dev, &channels);
1709
1710 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1711 return -EFAULT;
1712 return 0;
1713}
1714
1715static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1716 void __user *useraddr)
1717{
1718 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
1719 u32 max_rx_in_use = 0;
1720
1721 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1722 return -EOPNOTSUPP;
1723
1724 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1725 return -EFAULT;
1726
1727 dev->ethtool_ops->get_channels(dev, &max);
1728
1729 /* ensure new counts are within the maximums */
1730 if ((channels.rx_count > max.max_rx) ||
1731 (channels.tx_count > max.max_tx) ||
1732 (channels.combined_count > max.max_combined) ||
1733 (channels.other_count > max.max_other))
1734 return -EINVAL;
1735
1736 /* ensure the new Rx count fits within the configured Rx flow
1737 * indirection table settings */
1738 if (netif_is_rxfh_configured(dev) &&
1739 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1740 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1741 return -EINVAL;
1742
1743 return dev->ethtool_ops->set_channels(dev, &channels);
1744}
1745
1746static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1747{
1748 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1749
1750 if (!dev->ethtool_ops->get_pauseparam)
1751 return -EOPNOTSUPP;
1752
1753 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1754
1755 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1756 return -EFAULT;
1757 return 0;
1758}
1759
1760static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1761{
1762 struct ethtool_pauseparam pauseparam;
1763
1764 if (!dev->ethtool_ops->set_pauseparam)
1765 return -EOPNOTSUPP;
1766
1767 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1768 return -EFAULT;
1769
1770 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1771}
1772
1773static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1774{
1775 struct ethtool_test test;
1776 const struct ethtool_ops *ops = dev->ethtool_ops;
1777 u64 *data;
1778 int ret, test_len;
1779
1780 if (!ops->self_test || !ops->get_sset_count)
1781 return -EOPNOTSUPP;
1782
1783 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1784 if (test_len < 0)
1785 return test_len;
1786 WARN_ON(test_len == 0);
1787
1788 if (copy_from_user(&test, useraddr, sizeof(test)))
1789 return -EFAULT;
1790
1791 test.len = test_len;
1792 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1793 if (!data)
1794 return -ENOMEM;
1795
1796 ops->self_test(dev, &test, data);
1797
1798 ret = -EFAULT;
1799 if (copy_to_user(useraddr, &test, sizeof(test)))
1800 goto out;
1801 useraddr += sizeof(test);
1802 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1803 goto out;
1804 ret = 0;
1805
1806 out:
1807 kfree(data);
1808 return ret;
1809}
1810
1811static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1812{
1813 struct ethtool_gstrings gstrings;
1814 u8 *data;
1815 int ret;
1816
1817 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1818 return -EFAULT;
1819
1820 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1821 if (ret < 0)
1822 return ret;
1823
1824 gstrings.len = ret;
1825
1826 data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER);
1827 if (!data)
1828 return -ENOMEM;
1829
1830 __ethtool_get_strings(dev, gstrings.string_set, data);
1831
1832 ret = -EFAULT;
1833 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1834 goto out;
1835 useraddr += sizeof(gstrings);
1836 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1837 goto out;
1838 ret = 0;
1839
1840out:
1841 kfree(data);
1842 return ret;
1843}
1844
1845static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1846{
1847 struct ethtool_value id;
1848 static bool busy;
1849 const struct ethtool_ops *ops = dev->ethtool_ops;
1850 int rc;
1851
1852 if (!ops->set_phys_id)
1853 return -EOPNOTSUPP;
1854
1855 if (busy)
1856 return -EBUSY;
1857
1858 if (copy_from_user(&id, useraddr, sizeof(id)))
1859 return -EFAULT;
1860
1861 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1862 if (rc < 0)
1863 return rc;
1864
1865 /* Drop the RTNL lock while waiting, but prevent reentry or
1866 * removal of the device.
1867 */
1868 busy = true;
1869 dev_hold(dev);
1870 rtnl_unlock();
1871
1872 if (rc == 0) {
1873 /* Driver will handle this itself */
1874 schedule_timeout_interruptible(
1875 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1876 } else {
1877 /* Driver expects to be called at twice the frequency in rc */
1878 int n = rc * 2, i, interval = HZ / n;
1879
1880 /* Count down seconds */
1881 do {
1882 /* Count down iterations per second */
1883 i = n;
1884 do {
1885 rtnl_lock();
1886 rc = ops->set_phys_id(dev,
1887 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1888 rtnl_unlock();
1889 if (rc)
1890 break;
1891 schedule_timeout_interruptible(interval);
1892 } while (!signal_pending(current) && --i != 0);
1893 } while (!signal_pending(current) &&
1894 (id.data == 0 || --id.data != 0));
1895 }
1896
1897 rtnl_lock();
1898 dev_put(dev);
1899 busy = false;
1900
1901 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1902 return rc;
1903}
1904
1905static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1906{
1907 struct ethtool_stats stats;
1908 const struct ethtool_ops *ops = dev->ethtool_ops;
1909 u64 *data;
1910 int ret, n_stats;
1911
1912 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1913 return -EOPNOTSUPP;
1914
1915 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1916 if (n_stats < 0)
1917 return n_stats;
1918 WARN_ON(n_stats == 0);
1919
1920 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1921 return -EFAULT;
1922
1923 stats.n_stats = n_stats;
1924 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1925 if (!data)
1926 return -ENOMEM;
1927
1928 ops->get_ethtool_stats(dev, &stats, data);
1929
1930 ret = -EFAULT;
1931 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1932 goto out;
1933 useraddr += sizeof(stats);
1934 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1935 goto out;
1936 ret = 0;
1937
1938 out:
1939 kfree(data);
1940 return ret;
1941}
1942
1943static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1944{
1945 struct ethtool_stats stats;
1946 struct phy_device *phydev = dev->phydev;
1947 u64 *data;
1948 int ret, n_stats;
1949
1950 if (!phydev)
1951 return -EOPNOTSUPP;
1952
1953 n_stats = phy_get_sset_count(phydev);
1954
1955 if (n_stats < 0)
1956 return n_stats;
1957 WARN_ON(n_stats == 0);
1958
1959 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1960 return -EFAULT;
1961
1962 stats.n_stats = n_stats;
1963 data = kmalloc_array(n_stats, sizeof(u64), GFP_USER);
1964 if (!data)
1965 return -ENOMEM;
1966
1967 mutex_lock(&phydev->lock);
1968 phydev->drv->get_stats(phydev, &stats, data);
1969 mutex_unlock(&phydev->lock);
1970
1971 ret = -EFAULT;
1972 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1973 goto out;
1974 useraddr += sizeof(stats);
1975 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1976 goto out;
1977 ret = 0;
1978
1979 out:
1980 kfree(data);
1981 return ret;
1982}
1983
1984static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1985{
1986 struct ethtool_perm_addr epaddr;
1987
1988 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1989 return -EFAULT;
1990
1991 if (epaddr.size < dev->addr_len)
1992 return -ETOOSMALL;
1993 epaddr.size = dev->addr_len;
1994
1995 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1996 return -EFAULT;
1997 useraddr += sizeof(epaddr);
1998 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1999 return -EFAULT;
2000 return 0;
2001}
2002
2003static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2004 u32 cmd, u32 (*actor)(struct net_device *))
2005{
2006 struct ethtool_value edata = { .cmd = cmd };
2007
2008 if (!actor)
2009 return -EOPNOTSUPP;
2010
2011 edata.data = actor(dev);
2012
2013 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2014 return -EFAULT;
2015 return 0;
2016}
2017
2018static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2019 void (*actor)(struct net_device *, u32))
2020{
2021 struct ethtool_value edata;
2022
2023 if (!actor)
2024 return -EOPNOTSUPP;
2025
2026 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2027 return -EFAULT;
2028
2029 actor(dev, edata.data);
2030 return 0;
2031}
2032
2033static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2034 int (*actor)(struct net_device *, u32))
2035{
2036 struct ethtool_value edata;
2037
2038 if (!actor)
2039 return -EOPNOTSUPP;
2040
2041 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2042 return -EFAULT;
2043
2044 return actor(dev, edata.data);
2045}
2046
2047static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2048 char __user *useraddr)
2049{
2050 struct ethtool_flash efl;
2051
2052 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2053 return -EFAULT;
2054
2055 if (!dev->ethtool_ops->flash_device)
2056 return -EOPNOTSUPP;
2057
2058 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2059
2060 return dev->ethtool_ops->flash_device(dev, &efl);
2061}
2062
2063static int ethtool_set_dump(struct net_device *dev,
2064 void __user *useraddr)
2065{
2066 struct ethtool_dump dump;
2067
2068 if (!dev->ethtool_ops->set_dump)
2069 return -EOPNOTSUPP;
2070
2071 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2072 return -EFAULT;
2073
2074 return dev->ethtool_ops->set_dump(dev, &dump);
2075}
2076
2077static int ethtool_get_dump_flag(struct net_device *dev,
2078 void __user *useraddr)
2079{
2080 int ret;
2081 struct ethtool_dump dump;
2082 const struct ethtool_ops *ops = dev->ethtool_ops;
2083
2084 if (!ops->get_dump_flag)
2085 return -EOPNOTSUPP;
2086
2087 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2088 return -EFAULT;
2089
2090 ret = ops->get_dump_flag(dev, &dump);
2091 if (ret)
2092 return ret;
2093
2094 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2095 return -EFAULT;
2096 return 0;
2097}
2098
2099static int ethtool_get_dump_data(struct net_device *dev,
2100 void __user *useraddr)
2101{
2102 int ret;
2103 __u32 len;
2104 struct ethtool_dump dump, tmp;
2105 const struct ethtool_ops *ops = dev->ethtool_ops;
2106 void *data = NULL;
2107
2108 if (!ops->get_dump_data || !ops->get_dump_flag)
2109 return -EOPNOTSUPP;
2110
2111 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2112 return -EFAULT;
2113
2114 memset(&tmp, 0, sizeof(tmp));
2115 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2116 ret = ops->get_dump_flag(dev, &tmp);
2117 if (ret)
2118 return ret;
2119
2120 len = min(tmp.len, dump.len);
2121 if (!len)
2122 return -EFAULT;
2123
2124 /* Don't ever let the driver think there's more space available
2125 * than it requested with .get_dump_flag().
2126 */
2127 dump.len = len;
2128
2129 /* Always allocate enough space to hold the whole thing so that the
2130 * driver does not need to check the length and bother with partial
2131 * dumping.
2132 */
2133 data = vzalloc(tmp.len);
2134 if (!data)
2135 return -ENOMEM;
2136 ret = ops->get_dump_data(dev, &dump, data);
2137 if (ret)
2138 goto out;
2139
2140 /* There are two sane possibilities:
2141 * 1. The driver's .get_dump_data() does not touch dump.len.
2142 * 2. Or it may set dump.len to how much it really writes, which
2143 * should be tmp.len (or len if it can do a partial dump).
2144 * In any case respond to userspace with the actual length of data
2145 * it's receiving.
2146 */
2147 WARN_ON(dump.len != len && dump.len != tmp.len);
2148 dump.len = len;
2149
2150 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2151 ret = -EFAULT;
2152 goto out;
2153 }
2154 useraddr += offsetof(struct ethtool_dump, data);
2155 if (copy_to_user(useraddr, data, len))
2156 ret = -EFAULT;
2157out:
2158 vfree(data);
2159 return ret;
2160}
2161
2162static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2163{
2164 int err = 0;
2165 struct ethtool_ts_info info;
2166 const struct ethtool_ops *ops = dev->ethtool_ops;
2167 struct phy_device *phydev = dev->phydev;
2168
2169 memset(&info, 0, sizeof(info));
2170 info.cmd = ETHTOOL_GET_TS_INFO;
2171
2172 if (phydev && phydev->drv && phydev->drv->ts_info) {
2173 err = phydev->drv->ts_info(phydev, &info);
2174 } else if (ops->get_ts_info) {
2175 err = ops->get_ts_info(dev, &info);
2176 } else {
2177 info.so_timestamping =
2178 SOF_TIMESTAMPING_RX_SOFTWARE |
2179 SOF_TIMESTAMPING_SOFTWARE;
2180 info.phc_index = -1;
2181 }
2182
2183 if (err)
2184 return err;
2185
2186 if (copy_to_user(useraddr, &info, sizeof(info)))
2187 err = -EFAULT;
2188
2189 return err;
2190}
2191
2192static int __ethtool_get_module_info(struct net_device *dev,
2193 struct ethtool_modinfo *modinfo)
2194{
2195 const struct ethtool_ops *ops = dev->ethtool_ops;
2196 struct phy_device *phydev = dev->phydev;
2197
2198 if (phydev && phydev->drv && phydev->drv->module_info)
2199 return phydev->drv->module_info(phydev, modinfo);
2200
2201 if (ops->get_module_info)
2202 return ops->get_module_info(dev, modinfo);
2203
2204 return -EOPNOTSUPP;
2205}
2206
2207static int ethtool_get_module_info(struct net_device *dev,
2208 void __user *useraddr)
2209{
2210 int ret;
2211 struct ethtool_modinfo modinfo;
2212
2213 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2214 return -EFAULT;
2215
2216 ret = __ethtool_get_module_info(dev, &modinfo);
2217 if (ret)
2218 return ret;
2219
2220 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2221 return -EFAULT;
2222
2223 return 0;
2224}
2225
2226static int __ethtool_get_module_eeprom(struct net_device *dev,
2227 struct ethtool_eeprom *ee, u8 *data)
2228{
2229 const struct ethtool_ops *ops = dev->ethtool_ops;
2230 struct phy_device *phydev = dev->phydev;
2231
2232 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2233 return phydev->drv->module_eeprom(phydev, ee, data);
2234
2235 if (ops->get_module_eeprom)
2236 return ops->get_module_eeprom(dev, ee, data);
2237
2238 return -EOPNOTSUPP;
2239}
2240
2241static int ethtool_get_module_eeprom(struct net_device *dev,
2242 void __user *useraddr)
2243{
2244 int ret;
2245 struct ethtool_modinfo modinfo;
2246
2247 ret = __ethtool_get_module_info(dev, &modinfo);
2248 if (ret)
2249 return ret;
2250
2251 return ethtool_get_any_eeprom(dev, useraddr,
2252 __ethtool_get_module_eeprom,
2253 modinfo.eeprom_len);
2254}
2255
2256static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2257{
2258 switch (tuna->id) {
2259 case ETHTOOL_RX_COPYBREAK:
2260 case ETHTOOL_TX_COPYBREAK:
2261 if (tuna->len != sizeof(u32) ||
2262 tuna->type_id != ETHTOOL_TUNABLE_U32)
2263 return -EINVAL;
2264 break;
2265 default:
2266 return -EINVAL;
2267 }
2268
2269 return 0;
2270}
2271
2272static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2273{
2274 int ret;
2275 struct ethtool_tunable tuna;
2276 const struct ethtool_ops *ops = dev->ethtool_ops;
2277 void *data;
2278
2279 if (!ops->get_tunable)
2280 return -EOPNOTSUPP;
2281 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2282 return -EFAULT;
2283 ret = ethtool_tunable_valid(&tuna);
2284 if (ret)
2285 return ret;
2286 data = kmalloc(tuna.len, GFP_USER);
2287 if (!data)
2288 return -ENOMEM;
2289 ret = ops->get_tunable(dev, &tuna, data);
2290 if (ret)
2291 goto out;
2292 useraddr += sizeof(tuna);
2293 ret = -EFAULT;
2294 if (copy_to_user(useraddr, data, tuna.len))
2295 goto out;
2296 ret = 0;
2297
2298out:
2299 kfree(data);
2300 return ret;
2301}
2302
2303static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2304{
2305 int ret;
2306 struct ethtool_tunable tuna;
2307 const struct ethtool_ops *ops = dev->ethtool_ops;
2308 void *data;
2309
2310 if (!ops->set_tunable)
2311 return -EOPNOTSUPP;
2312 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2313 return -EFAULT;
2314 ret = ethtool_tunable_valid(&tuna);
2315 if (ret)
2316 return ret;
2317 data = kmalloc(tuna.len, GFP_USER);
2318 if (!data)
2319 return -ENOMEM;
2320 useraddr += sizeof(tuna);
2321 ret = -EFAULT;
2322 if (copy_from_user(data, useraddr, tuna.len))
2323 goto out;
2324 ret = ops->set_tunable(dev, &tuna, data);
2325
2326out:
2327 kfree(data);
2328 return ret;
2329}
2330
2331static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2332 void __user *useraddr,
2333 struct ethtool_per_queue_op *per_queue_opt)
2334{
2335 u32 bit;
2336 int ret;
2337 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2338
2339 if (!dev->ethtool_ops->get_per_queue_coalesce)
2340 return -EOPNOTSUPP;
2341
2342 useraddr += sizeof(*per_queue_opt);
2343
2344 bitmap_from_u32array(queue_mask,
2345 MAX_NUM_QUEUE,
2346 per_queue_opt->queue_mask,
2347 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2348
2349 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2350 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2351
2352 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2353 if (ret != 0)
2354 return ret;
2355 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2356 return -EFAULT;
2357 useraddr += sizeof(coalesce);
2358 }
2359
2360 return 0;
2361}
2362
2363static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2364 void __user *useraddr,
2365 struct ethtool_per_queue_op *per_queue_opt)
2366{
2367 u32 bit;
2368 int i, ret = 0;
2369 int n_queue;
2370 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2371 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2372
2373 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2374 (!dev->ethtool_ops->get_per_queue_coalesce))
2375 return -EOPNOTSUPP;
2376
2377 useraddr += sizeof(*per_queue_opt);
2378
2379 bitmap_from_u32array(queue_mask,
2380 MAX_NUM_QUEUE,
2381 per_queue_opt->queue_mask,
2382 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2383 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2384 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2385 if (!backup)
2386 return -ENOMEM;
2387
2388 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2389 struct ethtool_coalesce coalesce;
2390
2391 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2392 if (ret != 0)
2393 goto roll_back;
2394
2395 tmp++;
2396
2397 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2398 ret = -EFAULT;
2399 goto roll_back;
2400 }
2401
2402 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2403 if (ret != 0)
2404 goto roll_back;
2405
2406 useraddr += sizeof(coalesce);
2407 }
2408
2409roll_back:
2410 if (ret != 0) {
2411 tmp = backup;
2412 for_each_set_bit(i, queue_mask, bit) {
2413 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2414 tmp++;
2415 }
2416 }
2417 kfree(backup);
2418
2419 return ret;
2420}
2421
2422static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2423{
2424 struct ethtool_per_queue_op per_queue_opt;
2425
2426 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2427 return -EFAULT;
2428
2429 switch (per_queue_opt.sub_command) {
2430 case ETHTOOL_GCOALESCE:
2431 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2432 case ETHTOOL_SCOALESCE:
2433 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2434 default:
2435 return -EOPNOTSUPP;
2436 };
2437}
2438
2439static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2440{
2441 switch (tuna->id) {
2442 case ETHTOOL_PHY_DOWNSHIFT:
2443 if (tuna->len != sizeof(u8) ||
2444 tuna->type_id != ETHTOOL_TUNABLE_U8)
2445 return -EINVAL;
2446 break;
2447 default:
2448 return -EINVAL;
2449 }
2450
2451 return 0;
2452}
2453
2454static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2455{
2456 int ret;
2457 struct ethtool_tunable tuna;
2458 struct phy_device *phydev = dev->phydev;
2459 void *data;
2460
2461 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2462 return -EOPNOTSUPP;
2463
2464 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2465 return -EFAULT;
2466 ret = ethtool_phy_tunable_valid(&tuna);
2467 if (ret)
2468 return ret;
2469 data = kmalloc(tuna.len, GFP_USER);
2470 if (!data)
2471 return -ENOMEM;
2472 mutex_lock(&phydev->lock);
2473 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2474 mutex_unlock(&phydev->lock);
2475 if (ret)
2476 goto out;
2477 useraddr += sizeof(tuna);
2478 ret = -EFAULT;
2479 if (copy_to_user(useraddr, data, tuna.len))
2480 goto out;
2481 ret = 0;
2482
2483out:
2484 kfree(data);
2485 return ret;
2486}
2487
2488static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2489{
2490 int ret;
2491 struct ethtool_tunable tuna;
2492 struct phy_device *phydev = dev->phydev;
2493 void *data;
2494
2495 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2496 return -EOPNOTSUPP;
2497 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2498 return -EFAULT;
2499 ret = ethtool_phy_tunable_valid(&tuna);
2500 if (ret)
2501 return ret;
2502 data = kmalloc(tuna.len, GFP_USER);
2503 if (!data)
2504 return -ENOMEM;
2505 useraddr += sizeof(tuna);
2506 ret = -EFAULT;
2507 if (copy_from_user(data, useraddr, tuna.len))
2508 goto out;
2509 mutex_lock(&phydev->lock);
2510 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2511 mutex_unlock(&phydev->lock);
2512
2513out:
2514 kfree(data);
2515 return ret;
2516}
2517
2518/* The main entry point in this file. Called from net/core/dev_ioctl.c */
2519
2520int dev_ethtool(struct net *net, struct ifreq *ifr)
2521{
2522 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2523 void __user *useraddr = ifr->ifr_data;
2524 u32 ethcmd, sub_cmd;
2525 int rc;
2526 netdev_features_t old_features;
2527
2528 if (!dev || !netif_device_present(dev))
2529 return -ENODEV;
2530
2531 if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd)))
2532 return -EFAULT;
2533
2534 if (ethcmd == ETHTOOL_PERQUEUE) {
2535 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2536 return -EFAULT;
2537 } else {
2538 sub_cmd = ethcmd;
2539 }
2540 /* Allow some commands to be done by anyone */
2541 switch (sub_cmd) {
2542 case ETHTOOL_GSET:
2543 case ETHTOOL_GDRVINFO:
2544 case ETHTOOL_GMSGLVL:
2545 case ETHTOOL_GLINK:
2546 case ETHTOOL_GCOALESCE:
2547 case ETHTOOL_GRINGPARAM:
2548 case ETHTOOL_GPAUSEPARAM:
2549 case ETHTOOL_GRXCSUM:
2550 case ETHTOOL_GTXCSUM:
2551 case ETHTOOL_GSG:
2552 case ETHTOOL_GSSET_INFO:
2553 case ETHTOOL_GSTRINGS:
2554 case ETHTOOL_GSTATS:
2555 case ETHTOOL_GPHYSTATS:
2556 case ETHTOOL_GTSO:
2557 case ETHTOOL_GPERMADDR:
2558 case ETHTOOL_GUFO:
2559 case ETHTOOL_GGSO:
2560 case ETHTOOL_GGRO:
2561 case ETHTOOL_GFLAGS:
2562 case ETHTOOL_GPFLAGS:
2563 case ETHTOOL_GRXFH:
2564 case ETHTOOL_GRXRINGS:
2565 case ETHTOOL_GRXCLSRLCNT:
2566 case ETHTOOL_GRXCLSRULE:
2567 case ETHTOOL_GRXCLSRLALL:
2568 case ETHTOOL_GRXFHINDIR:
2569 case ETHTOOL_GRSSH:
2570 case ETHTOOL_GFEATURES:
2571 case ETHTOOL_GCHANNELS:
2572 case ETHTOOL_GET_TS_INFO:
2573 case ETHTOOL_GEEE:
2574 case ETHTOOL_GTUNABLE:
2575 case ETHTOOL_PHY_GTUNABLE:
2576 case ETHTOOL_GLINKSETTINGS:
2577 break;
2578 default:
2579 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2580 return -EPERM;
2581 }
2582
2583 if (dev->ethtool_ops->begin) {
2584 rc = dev->ethtool_ops->begin(dev);
2585 if (rc < 0)
2586 return rc;
2587 }
2588 old_features = dev->features;
2589
2590 switch (ethcmd) {
2591 case ETHTOOL_GSET:
2592 rc = ethtool_get_settings(dev, useraddr);
2593 break;
2594 case ETHTOOL_SSET:
2595 rc = ethtool_set_settings(dev, useraddr);
2596 break;
2597 case ETHTOOL_GDRVINFO:
2598 rc = ethtool_get_drvinfo(dev, useraddr);
2599 break;
2600 case ETHTOOL_GREGS:
2601 rc = ethtool_get_regs(dev, useraddr);
2602 break;
2603 case ETHTOOL_GWOL:
2604 rc = ethtool_get_wol(dev, useraddr);
2605 break;
2606 case ETHTOOL_SWOL:
2607 rc = ethtool_set_wol(dev, useraddr);
2608 break;
2609 case ETHTOOL_GMSGLVL:
2610 rc = ethtool_get_value(dev, useraddr, ethcmd,
2611 dev->ethtool_ops->get_msglevel);
2612 break;
2613 case ETHTOOL_SMSGLVL:
2614 rc = ethtool_set_value_void(dev, useraddr,
2615 dev->ethtool_ops->set_msglevel);
2616 break;
2617 case ETHTOOL_GEEE:
2618 rc = ethtool_get_eee(dev, useraddr);
2619 break;
2620 case ETHTOOL_SEEE:
2621 rc = ethtool_set_eee(dev, useraddr);
2622 break;
2623 case ETHTOOL_NWAY_RST:
2624 rc = ethtool_nway_reset(dev);
2625 break;
2626 case ETHTOOL_GLINK:
2627 rc = ethtool_get_link(dev, useraddr);
2628 break;
2629 case ETHTOOL_GEEPROM:
2630 rc = ethtool_get_eeprom(dev, useraddr);
2631 break;
2632 case ETHTOOL_SEEPROM:
2633 rc = ethtool_set_eeprom(dev, useraddr);
2634 break;
2635 case ETHTOOL_GCOALESCE:
2636 rc = ethtool_get_coalesce(dev, useraddr);
2637 break;
2638 case ETHTOOL_SCOALESCE:
2639 rc = ethtool_set_coalesce(dev, useraddr);
2640 break;
2641 case ETHTOOL_GRINGPARAM:
2642 rc = ethtool_get_ringparam(dev, useraddr);
2643 break;
2644 case ETHTOOL_SRINGPARAM:
2645 rc = ethtool_set_ringparam(dev, useraddr);
2646 break;
2647 case ETHTOOL_GPAUSEPARAM:
2648 rc = ethtool_get_pauseparam(dev, useraddr);
2649 break;
2650 case ETHTOOL_SPAUSEPARAM:
2651 rc = ethtool_set_pauseparam(dev, useraddr);
2652 break;
2653 case ETHTOOL_TEST:
2654 rc = ethtool_self_test(dev, useraddr);
2655 break;
2656 case ETHTOOL_GSTRINGS:
2657 rc = ethtool_get_strings(dev, useraddr);
2658 break;
2659 case ETHTOOL_PHYS_ID:
2660 rc = ethtool_phys_id(dev, useraddr);
2661 break;
2662 case ETHTOOL_GSTATS:
2663 rc = ethtool_get_stats(dev, useraddr);
2664 break;
2665 case ETHTOOL_GPERMADDR:
2666 rc = ethtool_get_perm_addr(dev, useraddr);
2667 break;
2668 case ETHTOOL_GFLAGS:
2669 rc = ethtool_get_value(dev, useraddr, ethcmd,
2670 __ethtool_get_flags);
2671 break;
2672 case ETHTOOL_SFLAGS:
2673 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2674 break;
2675 case ETHTOOL_GPFLAGS:
2676 rc = ethtool_get_value(dev, useraddr, ethcmd,
2677 dev->ethtool_ops->get_priv_flags);
2678 break;
2679 case ETHTOOL_SPFLAGS:
2680 rc = ethtool_set_value(dev, useraddr,
2681 dev->ethtool_ops->set_priv_flags);
2682 break;
2683 case ETHTOOL_GRXFH:
2684 case ETHTOOL_GRXRINGS:
2685 case ETHTOOL_GRXCLSRLCNT:
2686 case ETHTOOL_GRXCLSRULE:
2687 case ETHTOOL_GRXCLSRLALL:
2688 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2689 break;
2690 case ETHTOOL_SRXFH:
2691 case ETHTOOL_SRXCLSRLDEL:
2692 case ETHTOOL_SRXCLSRLINS:
2693 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2694 break;
2695 case ETHTOOL_FLASHDEV:
2696 rc = ethtool_flash_device(dev, useraddr);
2697 break;
2698 case ETHTOOL_RESET:
2699 rc = ethtool_reset(dev, useraddr);
2700 break;
2701 case ETHTOOL_GSSET_INFO:
2702 rc = ethtool_get_sset_info(dev, useraddr);
2703 break;
2704 case ETHTOOL_GRXFHINDIR:
2705 rc = ethtool_get_rxfh_indir(dev, useraddr);
2706 break;
2707 case ETHTOOL_SRXFHINDIR:
2708 rc = ethtool_set_rxfh_indir(dev, useraddr);
2709 break;
2710 case ETHTOOL_GRSSH:
2711 rc = ethtool_get_rxfh(dev, useraddr);
2712 break;
2713 case ETHTOOL_SRSSH:
2714 rc = ethtool_set_rxfh(dev, useraddr);
2715 break;
2716 case ETHTOOL_GFEATURES:
2717 rc = ethtool_get_features(dev, useraddr);
2718 break;
2719 case ETHTOOL_SFEATURES:
2720 rc = ethtool_set_features(dev, useraddr);
2721 break;
2722 case ETHTOOL_GTXCSUM:
2723 case ETHTOOL_GRXCSUM:
2724 case ETHTOOL_GSG:
2725 case ETHTOOL_GTSO:
2726 case ETHTOOL_GUFO:
2727 case ETHTOOL_GGSO:
2728 case ETHTOOL_GGRO:
2729 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2730 break;
2731 case ETHTOOL_STXCSUM:
2732 case ETHTOOL_SRXCSUM:
2733 case ETHTOOL_SSG:
2734 case ETHTOOL_STSO:
2735 case ETHTOOL_SUFO:
2736 case ETHTOOL_SGSO:
2737 case ETHTOOL_SGRO:
2738 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2739 break;
2740 case ETHTOOL_GCHANNELS:
2741 rc = ethtool_get_channels(dev, useraddr);
2742 break;
2743 case ETHTOOL_SCHANNELS:
2744 rc = ethtool_set_channels(dev, useraddr);
2745 break;
2746 case ETHTOOL_SET_DUMP:
2747 rc = ethtool_set_dump(dev, useraddr);
2748 break;
2749 case ETHTOOL_GET_DUMP_FLAG:
2750 rc = ethtool_get_dump_flag(dev, useraddr);
2751 break;
2752 case ETHTOOL_GET_DUMP_DATA:
2753 rc = ethtool_get_dump_data(dev, useraddr);
2754 break;
2755 case ETHTOOL_GET_TS_INFO:
2756 rc = ethtool_get_ts_info(dev, useraddr);
2757 break;
2758 case ETHTOOL_GMODULEINFO:
2759 rc = ethtool_get_module_info(dev, useraddr);
2760 break;
2761 case ETHTOOL_GMODULEEEPROM:
2762 rc = ethtool_get_module_eeprom(dev, useraddr);
2763 break;
2764 case ETHTOOL_GTUNABLE:
2765 rc = ethtool_get_tunable(dev, useraddr);
2766 break;
2767 case ETHTOOL_STUNABLE:
2768 rc = ethtool_set_tunable(dev, useraddr);
2769 break;
2770 case ETHTOOL_GPHYSTATS:
2771 rc = ethtool_get_phy_stats(dev, useraddr);
2772 break;
2773 case ETHTOOL_PERQUEUE:
2774 rc = ethtool_set_per_queue(dev, useraddr);
2775 break;
2776 case ETHTOOL_GLINKSETTINGS:
2777 rc = ethtool_get_link_ksettings(dev, useraddr);
2778 break;
2779 case ETHTOOL_SLINKSETTINGS:
2780 rc = ethtool_set_link_ksettings(dev, useraddr);
2781 break;
2782 case ETHTOOL_PHY_GTUNABLE:
2783 rc = get_phy_tunable(dev, useraddr);
2784 break;
2785 case ETHTOOL_PHY_STUNABLE:
2786 rc = set_phy_tunable(dev, useraddr);
2787 break;
2788 default:
2789 rc = -EOPNOTSUPP;
2790 }
2791
2792 if (dev->ethtool_ops->complete)
2793 dev->ethtool_ops->complete(dev);
2794
2795 if (old_features != dev->features)
2796 netdev_features_change(dev);
2797
2798 return rc;
2799}