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Merge tag 'for-linus-3.11-merge-window-part-2' of git://git.kernel.org/pub/scm/linux...
[linux-2.6.git] / net / core / ethtool.c
blobab5fa6336c840785b93c6f469b441d6fcdec1379
1 /*
2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
4 *
5 * This file is where we call all the ethtool_ops commands to get
6 * the information ethtool needs.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14 #include <linux/module.h>
15 #include <linux/types.h>
16 #include <linux/capability.h>
17 #include <linux/errno.h>
18 #include <linux/ethtool.h>
19 #include <linux/netdevice.h>
20 #include <linux/net_tstamp.h>
21 #include <linux/phy.h>
22 #include <linux/bitops.h>
23 #include <linux/uaccess.h>
24 #include <linux/vmalloc.h>
25 #include <linux/slab.h>
26 #include <linux/rtnetlink.h>
27 #include <linux/sched.h>
28
29 /*
30 * Some useful ethtool_ops methods that're device independent.
31 * If we find that all drivers want to do the same thing here,
32 * we can turn these into dev_() function calls.
33 */
34
35 u32 ethtool_op_get_link(struct net_device *dev)
36 {
37 return netif_carrier_ok(dev) ? 1 : 0;
38 }
39 EXPORT_SYMBOL(ethtool_op_get_link);
40
41 int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
42 {
43 info->so_timestamping =
44 SOF_TIMESTAMPING_TX_SOFTWARE |
45 SOF_TIMESTAMPING_RX_SOFTWARE |
46 SOF_TIMESTAMPING_SOFTWARE;
47 info->phc_index = -1;
48 return 0;
49 }
50 EXPORT_SYMBOL(ethtool_op_get_ts_info);
51
52 /* Handlers for each ethtool command */
53
54 #define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
55
56 static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
57 [NETIF_F_SG_BIT] = "tx-scatter-gather",
58 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
59 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
60 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
61 [NETIF_F_HIGHDMA_BIT] = "highdma",
62 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
63 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
64
65 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
66 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
67 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
68 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
69 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
70 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
71 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
72 [NETIF_F_LLTX_BIT] = "tx-lockless",
73 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
74 [NETIF_F_GRO_BIT] = "rx-gro",
75 [NETIF_F_LRO_BIT] = "rx-lro",
76
77 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
78 [NETIF_F_UFO_BIT] = "tx-udp-fragmentation",
79 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
80 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
81 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
82 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
83 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
84 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
85 [NETIF_F_GSO_MPLS_BIT] = "tx-mpls-segmentation",
86
87 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
88 [NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",
89 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
90 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
91 [NETIF_F_RXHASH_BIT] = "rx-hashing",
92 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
93 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
94 [NETIF_F_LOOPBACK_BIT] = "loopback",
95 [NETIF_F_RXFCS_BIT] = "rx-fcs",
96 [NETIF_F_RXALL_BIT] = "rx-all",
97 };
98
99 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
100 {
101 struct ethtool_gfeatures cmd = {
102 .cmd = ETHTOOL_GFEATURES,
103 .size = ETHTOOL_DEV_FEATURE_WORDS,
104 };
105 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
106 u32 __user *sizeaddr;
107 u32 copy_size;
108 int i;
109
110 /* in case feature bits run out again */
111 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
112
113 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
114 features[i].available = (u32)(dev->hw_features >> (32 * i));
115 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
116 features[i].active = (u32)(dev->features >> (32 * i));
117 features[i].never_changed =
118 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
119 }
120
121 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
122 if (get_user(copy_size, sizeaddr))
123 return -EFAULT;
124
125 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
126 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
127
128 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
129 return -EFAULT;
130 useraddr += sizeof(cmd);
131 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
132 return -EFAULT;
133
134 return 0;
135 }
136
137 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
138 {
139 struct ethtool_sfeatures cmd;
140 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
141 netdev_features_t wanted = 0, valid = 0;
142 int i, ret = 0;
143
144 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
145 return -EFAULT;
146 useraddr += sizeof(cmd);
147
148 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
149 return -EINVAL;
150
151 if (copy_from_user(features, useraddr, sizeof(features)))
152 return -EFAULT;
153
154 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
155 valid |= (netdev_features_t)features[i].valid << (32 * i);
156 wanted |= (netdev_features_t)features[i].requested << (32 * i);
157 }
158
159 if (valid & ~NETIF_F_ETHTOOL_BITS)
160 return -EINVAL;
161
162 if (valid & ~dev->hw_features) {
163 valid &= dev->hw_features;
164 ret |= ETHTOOL_F_UNSUPPORTED;
165 }
166
167 dev->wanted_features &= ~valid;
168 dev->wanted_features |= wanted & valid;
169 __netdev_update_features(dev);
170
171 if ((dev->wanted_features ^ dev->features) & valid)
172 ret |= ETHTOOL_F_WISH;
173
174 return ret;
175 }
176
177 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
178 {
179 const struct ethtool_ops *ops = dev->ethtool_ops;
180
181 if (sset == ETH_SS_FEATURES)
182 return ARRAY_SIZE(netdev_features_strings);
183
184 if (ops->get_sset_count && ops->get_strings)
185 return ops->get_sset_count(dev, sset);
186 else
187 return -EOPNOTSUPP;
188 }
189
190 static void __ethtool_get_strings(struct net_device *dev,
191 u32 stringset, u8 *data)
192 {
193 const struct ethtool_ops *ops = dev->ethtool_ops;
194
195 if (stringset == ETH_SS_FEATURES)
196 memcpy(data, netdev_features_strings,
197 sizeof(netdev_features_strings));
198 else
199 /* ops->get_strings is valid because checked earlier */
200 ops->get_strings(dev, stringset, data);
201 }
202
203 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
204 {
205 /* feature masks of legacy discrete ethtool ops */
206
207 switch (eth_cmd) {
208 case ETHTOOL_GTXCSUM:
209 case ETHTOOL_STXCSUM:
210 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
211 case ETHTOOL_GRXCSUM:
212 case ETHTOOL_SRXCSUM:
213 return NETIF_F_RXCSUM;
214 case ETHTOOL_GSG:
215 case ETHTOOL_SSG:
216 return NETIF_F_SG;
217 case ETHTOOL_GTSO:
218 case ETHTOOL_STSO:
219 return NETIF_F_ALL_TSO;
220 case ETHTOOL_GUFO:
221 case ETHTOOL_SUFO:
222 return NETIF_F_UFO;
223 case ETHTOOL_GGSO:
224 case ETHTOOL_SGSO:
225 return NETIF_F_GSO;
226 case ETHTOOL_GGRO:
227 case ETHTOOL_SGRO:
228 return NETIF_F_GRO;
229 default:
230 BUG();
231 }
232 }
233
234 static int ethtool_get_one_feature(struct net_device *dev,
235 char __user *useraddr, u32 ethcmd)
236 {
237 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
238 struct ethtool_value edata = {
239 .cmd = ethcmd,
240 .data = !!(dev->features & mask),
241 };
242
243 if (copy_to_user(useraddr, &edata, sizeof(edata)))
244 return -EFAULT;
245 return 0;
246 }
247
248 static int ethtool_set_one_feature(struct net_device *dev,
249 void __user *useraddr, u32 ethcmd)
250 {
251 struct ethtool_value edata;
252 netdev_features_t mask;
253
254 if (copy_from_user(&edata, useraddr, sizeof(edata)))
255 return -EFAULT;
256
257 mask = ethtool_get_feature_mask(ethcmd);
258 mask &= dev->hw_features;
259 if (!mask)
260 return -EOPNOTSUPP;
261
262 if (edata.data)
263 dev->wanted_features |= mask;
264 else
265 dev->wanted_features &= ~mask;
266
267 __netdev_update_features(dev);
268
269 return 0;
270 }
271
272 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
273 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
274 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
275 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
276 NETIF_F_RXHASH)
277
278 static u32 __ethtool_get_flags(struct net_device *dev)
279 {
280 u32 flags = 0;
281
282 if (dev->features & NETIF_F_LRO) flags |= ETH_FLAG_LRO;
283 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) flags |= ETH_FLAG_RXVLAN;
284 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) flags |= ETH_FLAG_TXVLAN;
285 if (dev->features & NETIF_F_NTUPLE) flags |= ETH_FLAG_NTUPLE;
286 if (dev->features & NETIF_F_RXHASH) flags |= ETH_FLAG_RXHASH;
287
288 return flags;
289 }
290
291 static int __ethtool_set_flags(struct net_device *dev, u32 data)
292 {
293 netdev_features_t features = 0, changed;
294
295 if (data & ~ETH_ALL_FLAGS)
296 return -EINVAL;
297
298 if (data & ETH_FLAG_LRO) features |= NETIF_F_LRO;
299 if (data & ETH_FLAG_RXVLAN) features |= NETIF_F_HW_VLAN_CTAG_RX;
300 if (data & ETH_FLAG_TXVLAN) features |= NETIF_F_HW_VLAN_CTAG_TX;
301 if (data & ETH_FLAG_NTUPLE) features |= NETIF_F_NTUPLE;
302 if (data & ETH_FLAG_RXHASH) features |= NETIF_F_RXHASH;
303
304 /* allow changing only bits set in hw_features */
305 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
306 if (changed & ~dev->hw_features)
307 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
308
309 dev->wanted_features =
310 (dev->wanted_features & ~changed) | (features & changed);
311
312 __netdev_update_features(dev);
313
314 return 0;
315 }
316
317 int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
318 {
319 ASSERT_RTNL();
320
321 if (!dev->ethtool_ops->get_settings)
322 return -EOPNOTSUPP;
323
324 memset(cmd, 0, sizeof(struct ethtool_cmd));
325 cmd->cmd = ETHTOOL_GSET;
326 return dev->ethtool_ops->get_settings(dev, cmd);
327 }
328 EXPORT_SYMBOL(__ethtool_get_settings);
329
330 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
331 {
332 int err;
333 struct ethtool_cmd cmd;
334
335 err = __ethtool_get_settings(dev, &cmd);
336 if (err < 0)
337 return err;
338
339 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
340 return -EFAULT;
341 return 0;
342 }
343
344 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
345 {
346 struct ethtool_cmd cmd;
347
348 if (!dev->ethtool_ops->set_settings)
349 return -EOPNOTSUPP;
350
351 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
352 return -EFAULT;
353
354 return dev->ethtool_ops->set_settings(dev, &cmd);
355 }
356
357 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
358 void __user *useraddr)
359 {
360 struct ethtool_drvinfo info;
361 const struct ethtool_ops *ops = dev->ethtool_ops;
362
363 memset(&info, 0, sizeof(info));
364 info.cmd = ETHTOOL_GDRVINFO;
365 if (ops->get_drvinfo) {
366 ops->get_drvinfo(dev, &info);
367 } else if (dev->dev.parent && dev->dev.parent->driver) {
368 strlcpy(info.bus_info, dev_name(dev->dev.parent),
369 sizeof(info.bus_info));
370 strlcpy(info.driver, dev->dev.parent->driver->name,
371 sizeof(info.driver));
372 } else {
373 return -EOPNOTSUPP;
374 }
375
376 /*
377 * this method of obtaining string set info is deprecated;
378 * Use ETHTOOL_GSSET_INFO instead.
379 */
380 if (ops->get_sset_count) {
381 int rc;
382
383 rc = ops->get_sset_count(dev, ETH_SS_TEST);
384 if (rc >= 0)
385 info.testinfo_len = rc;
386 rc = ops->get_sset_count(dev, ETH_SS_STATS);
387 if (rc >= 0)
388 info.n_stats = rc;
389 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
390 if (rc >= 0)
391 info.n_priv_flags = rc;
392 }
393 if (ops->get_regs_len)
394 info.regdump_len = ops->get_regs_len(dev);
395 if (ops->get_eeprom_len)
396 info.eedump_len = ops->get_eeprom_len(dev);
397
398 if (copy_to_user(useraddr, &info, sizeof(info)))
399 return -EFAULT;
400 return 0;
401 }
402
403 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
404 void __user *useraddr)
405 {
406 struct ethtool_sset_info info;
407 u64 sset_mask;
408 int i, idx = 0, n_bits = 0, ret, rc;
409 u32 *info_buf = NULL;
410
411 if (copy_from_user(&info, useraddr, sizeof(info)))
412 return -EFAULT;
413
414 /* store copy of mask, because we zero struct later on */
415 sset_mask = info.sset_mask;
416 if (!sset_mask)
417 return 0;
418
419 /* calculate size of return buffer */
420 n_bits = hweight64(sset_mask);
421
422 memset(&info, 0, sizeof(info));
423 info.cmd = ETHTOOL_GSSET_INFO;
424
425 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
426 if (!info_buf)
427 return -ENOMEM;
428
429 /*
430 * fill return buffer based on input bitmask and successful
431 * get_sset_count return
432 */
433 for (i = 0; i < 64; i++) {
434 if (!(sset_mask & (1ULL << i)))
435 continue;
436
437 rc = __ethtool_get_sset_count(dev, i);
438 if (rc >= 0) {
439 info.sset_mask |= (1ULL << i);
440 info_buf[idx++] = rc;
441 }
442 }
443
444 ret = -EFAULT;
445 if (copy_to_user(useraddr, &info, sizeof(info)))
446 goto out;
447
448 useraddr += offsetof(struct ethtool_sset_info, data);
449 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
450 goto out;
451
452 ret = 0;
453
454 out:
455 kfree(info_buf);
456 return ret;
457 }
458
459 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
460 u32 cmd, void __user *useraddr)
461 {
462 struct ethtool_rxnfc info;
463 size_t info_size = sizeof(info);
464 int rc;
465
466 if (!dev->ethtool_ops->set_rxnfc)
467 return -EOPNOTSUPP;
468
469 /* struct ethtool_rxnfc was originally defined for
470 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
471 * members. User-space might still be using that
472 * definition. */
473 if (cmd == ETHTOOL_SRXFH)
474 info_size = (offsetof(struct ethtool_rxnfc, data) +
475 sizeof(info.data));
476
477 if (copy_from_user(&info, useraddr, info_size))
478 return -EFAULT;
479
480 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
481 if (rc)
482 return rc;
483
484 if (cmd == ETHTOOL_SRXCLSRLINS &&
485 copy_to_user(useraddr, &info, info_size))
486 return -EFAULT;
487
488 return 0;
489 }
490
491 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
492 u32 cmd, void __user *useraddr)
493 {
494 struct ethtool_rxnfc info;
495 size_t info_size = sizeof(info);
496 const struct ethtool_ops *ops = dev->ethtool_ops;
497 int ret;
498 void *rule_buf = NULL;
499
500 if (!ops->get_rxnfc)
501 return -EOPNOTSUPP;
502
503 /* struct ethtool_rxnfc was originally defined for
504 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
505 * members. User-space might still be using that
506 * definition. */
507 if (cmd == ETHTOOL_GRXFH)
508 info_size = (offsetof(struct ethtool_rxnfc, data) +
509 sizeof(info.data));
510
511 if (copy_from_user(&info, useraddr, info_size))
512 return -EFAULT;
513
514 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
515 if (info.rule_cnt > 0) {
516 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
517 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
518 GFP_USER);
519 if (!rule_buf)
520 return -ENOMEM;
521 }
522 }
523
524 ret = ops->get_rxnfc(dev, &info, rule_buf);
525 if (ret < 0)
526 goto err_out;
527
528 ret = -EFAULT;
529 if (copy_to_user(useraddr, &info, info_size))
530 goto err_out;
531
532 if (rule_buf) {
533 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
534 if (copy_to_user(useraddr, rule_buf,
535 info.rule_cnt * sizeof(u32)))
536 goto err_out;
537 }
538 ret = 0;
539
540 err_out:
541 kfree(rule_buf);
542
543 return ret;
544 }
545
546 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
547 void __user *useraddr)
548 {
549 u32 user_size, dev_size;
550 u32 *indir;
551 int ret;
552
553 if (!dev->ethtool_ops->get_rxfh_indir_size ||
554 !dev->ethtool_ops->get_rxfh_indir)
555 return -EOPNOTSUPP;
556 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
557 if (dev_size == 0)
558 return -EOPNOTSUPP;
559
560 if (copy_from_user(&user_size,
561 useraddr + offsetof(struct ethtool_rxfh_indir, size),
562 sizeof(user_size)))
563 return -EFAULT;
564
565 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
566 &dev_size, sizeof(dev_size)))
567 return -EFAULT;
568
569 /* If the user buffer size is 0, this is just a query for the
570 * device table size. Otherwise, if it's smaller than the
571 * device table size it's an error.
572 */
573 if (user_size < dev_size)
574 return user_size == 0 ? 0 : -EINVAL;
575
576 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
577 if (!indir)
578 return -ENOMEM;
579
580 ret = dev->ethtool_ops->get_rxfh_indir(dev, indir);
581 if (ret)
582 goto out;
583
584 if (copy_to_user(useraddr +
585 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
586 indir, dev_size * sizeof(indir[0])))
587 ret = -EFAULT;
588
589 out:
590 kfree(indir);
591 return ret;
592 }
593
594 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
595 void __user *useraddr)
596 {
597 struct ethtool_rxnfc rx_rings;
598 u32 user_size, dev_size, i;
599 u32 *indir;
600 const struct ethtool_ops *ops = dev->ethtool_ops;
601 int ret;
602
603 if (!ops->get_rxfh_indir_size || !ops->set_rxfh_indir ||
604 !ops->get_rxnfc)
605 return -EOPNOTSUPP;
606
607 dev_size = ops->get_rxfh_indir_size(dev);
608 if (dev_size == 0)
609 return -EOPNOTSUPP;
610
611 if (copy_from_user(&user_size,
612 useraddr + offsetof(struct ethtool_rxfh_indir, size),
613 sizeof(user_size)))
614 return -EFAULT;
615
616 if (user_size != 0 && user_size != dev_size)
617 return -EINVAL;
618
619 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
620 if (!indir)
621 return -ENOMEM;
622
623 rx_rings.cmd = ETHTOOL_GRXRINGS;
624 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
625 if (ret)
626 goto out;
627
628 if (user_size == 0) {
629 for (i = 0; i < dev_size; i++)
630 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
631 } else {
632 if (copy_from_user(indir,
633 useraddr +
634 offsetof(struct ethtool_rxfh_indir,
635 ring_index[0]),
636 dev_size * sizeof(indir[0]))) {
637 ret = -EFAULT;
638 goto out;
639 }
640
641 /* Validate ring indices */
642 for (i = 0; i < dev_size; i++) {
643 if (indir[i] >= rx_rings.data) {
644 ret = -EINVAL;
645 goto out;
646 }
647 }
648 }
649
650 ret = ops->set_rxfh_indir(dev, indir);
651
652 out:
653 kfree(indir);
654 return ret;
655 }
656
657 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
658 {
659 struct ethtool_regs regs;
660 const struct ethtool_ops *ops = dev->ethtool_ops;
661 void *regbuf;
662 int reglen, ret;
663
664 if (!ops->get_regs || !ops->get_regs_len)
665 return -EOPNOTSUPP;
666
667 if (copy_from_user(&regs, useraddr, sizeof(regs)))
668 return -EFAULT;
669
670 reglen = ops->get_regs_len(dev);
671 if (regs.len > reglen)
672 regs.len = reglen;
673
674 regbuf = vzalloc(reglen);
675 if (reglen && !regbuf)
676 return -ENOMEM;
677
678 ops->get_regs(dev, &regs, regbuf);
679
680 ret = -EFAULT;
681 if (copy_to_user(useraddr, &regs, sizeof(regs)))
682 goto out;
683 useraddr += offsetof(struct ethtool_regs, data);
684 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
685 goto out;
686 ret = 0;
687
688 out:
689 vfree(regbuf);
690 return ret;
691 }
692
693 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
694 {
695 struct ethtool_value reset;
696 int ret;
697
698 if (!dev->ethtool_ops->reset)
699 return -EOPNOTSUPP;
700
701 if (copy_from_user(&reset, useraddr, sizeof(reset)))
702 return -EFAULT;
703
704 ret = dev->ethtool_ops->reset(dev, &reset.data);
705 if (ret)
706 return ret;
707
708 if (copy_to_user(useraddr, &reset, sizeof(reset)))
709 return -EFAULT;
710 return 0;
711 }
712
713 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
714 {
715 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
716
717 if (!dev->ethtool_ops->get_wol)
718 return -EOPNOTSUPP;
719
720 dev->ethtool_ops->get_wol(dev, &wol);
721
722 if (copy_to_user(useraddr, &wol, sizeof(wol)))
723 return -EFAULT;
724 return 0;
725 }
726
727 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
728 {
729 struct ethtool_wolinfo wol;
730
731 if (!dev->ethtool_ops->set_wol)
732 return -EOPNOTSUPP;
733
734 if (copy_from_user(&wol, useraddr, sizeof(wol)))
735 return -EFAULT;
736
737 return dev->ethtool_ops->set_wol(dev, &wol);
738 }
739
740 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
741 {
742 struct ethtool_eee edata;
743 int rc;
744
745 if (!dev->ethtool_ops->get_eee)
746 return -EOPNOTSUPP;
747
748 memset(&edata, 0, sizeof(struct ethtool_eee));
749 edata.cmd = ETHTOOL_GEEE;
750 rc = dev->ethtool_ops->get_eee(dev, &edata);
751
752 if (rc)
753 return rc;
754
755 if (copy_to_user(useraddr, &edata, sizeof(edata)))
756 return -EFAULT;
757
758 return 0;
759 }
760
761 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
762 {
763 struct ethtool_eee edata;
764
765 if (!dev->ethtool_ops->set_eee)
766 return -EOPNOTSUPP;
767
768 if (copy_from_user(&edata, useraddr, sizeof(edata)))
769 return -EFAULT;
770
771 return dev->ethtool_ops->set_eee(dev, &edata);
772 }
773
774 static int ethtool_nway_reset(struct net_device *dev)
775 {
776 if (!dev->ethtool_ops->nway_reset)
777 return -EOPNOTSUPP;
778
779 return dev->ethtool_ops->nway_reset(dev);
780 }
781
782 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
783 {
784 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
785
786 if (!dev->ethtool_ops->get_link)
787 return -EOPNOTSUPP;
788
789 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
790
791 if (copy_to_user(useraddr, &edata, sizeof(edata)))
792 return -EFAULT;
793 return 0;
794 }
795
796 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
797 int (*getter)(struct net_device *,
798 struct ethtool_eeprom *, u8 *),
799 u32 total_len)
800 {
801 struct ethtool_eeprom eeprom;
802 void __user *userbuf = useraddr + sizeof(eeprom);
803 u32 bytes_remaining;
804 u8 *data;
805 int ret = 0;
806
807 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
808 return -EFAULT;
809
810 /* Check for wrap and zero */
811 if (eeprom.offset + eeprom.len <= eeprom.offset)
812 return -EINVAL;
813
814 /* Check for exceeding total eeprom len */
815 if (eeprom.offset + eeprom.len > total_len)
816 return -EINVAL;
817
818 data = kmalloc(PAGE_SIZE, GFP_USER);
819 if (!data)
820 return -ENOMEM;
821
822 bytes_remaining = eeprom.len;
823 while (bytes_remaining > 0) {
824 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
825
826 ret = getter(dev, &eeprom, data);
827 if (ret)
828 break;
829 if (copy_to_user(userbuf, data, eeprom.len)) {
830 ret = -EFAULT;
831 break;
832 }
833 userbuf += eeprom.len;
834 eeprom.offset += eeprom.len;
835 bytes_remaining -= eeprom.len;
836 }
837
838 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
839 eeprom.offset -= eeprom.len;
840 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
841 ret = -EFAULT;
842
843 kfree(data);
844 return ret;
845 }
846
847 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
848 {
849 const struct ethtool_ops *ops = dev->ethtool_ops;
850
851 if (!ops->get_eeprom || !ops->get_eeprom_len)
852 return -EOPNOTSUPP;
853
854 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
855 ops->get_eeprom_len(dev));
856 }
857
858 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
859 {
860 struct ethtool_eeprom eeprom;
861 const struct ethtool_ops *ops = dev->ethtool_ops;
862 void __user *userbuf = useraddr + sizeof(eeprom);
863 u32 bytes_remaining;
864 u8 *data;
865 int ret = 0;
866
867 if (!ops->set_eeprom || !ops->get_eeprom_len)
868 return -EOPNOTSUPP;
869
870 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
871 return -EFAULT;
872
873 /* Check for wrap and zero */
874 if (eeprom.offset + eeprom.len <= eeprom.offset)
875 return -EINVAL;
876
877 /* Check for exceeding total eeprom len */
878 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
879 return -EINVAL;
880
881 data = kmalloc(PAGE_SIZE, GFP_USER);
882 if (!data)
883 return -ENOMEM;
884
885 bytes_remaining = eeprom.len;
886 while (bytes_remaining > 0) {
887 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
888
889 if (copy_from_user(data, userbuf, eeprom.len)) {
890 ret = -EFAULT;
891 break;
892 }
893 ret = ops->set_eeprom(dev, &eeprom, data);
894 if (ret)
895 break;
896 userbuf += eeprom.len;
897 eeprom.offset += eeprom.len;
898 bytes_remaining -= eeprom.len;
899 }
900
901 kfree(data);
902 return ret;
903 }
904
905 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
906 void __user *useraddr)
907 {
908 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
909
910 if (!dev->ethtool_ops->get_coalesce)
911 return -EOPNOTSUPP;
912
913 dev->ethtool_ops->get_coalesce(dev, &coalesce);
914
915 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
916 return -EFAULT;
917 return 0;
918 }
919
920 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
921 void __user *useraddr)
922 {
923 struct ethtool_coalesce coalesce;
924
925 if (!dev->ethtool_ops->set_coalesce)
926 return -EOPNOTSUPP;
927
928 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
929 return -EFAULT;
930
931 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
932 }
933
934 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
935 {
936 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
937
938 if (!dev->ethtool_ops->get_ringparam)
939 return -EOPNOTSUPP;
940
941 dev->ethtool_ops->get_ringparam(dev, &ringparam);
942
943 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
944 return -EFAULT;
945 return 0;
946 }
947
948 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
949 {
950 struct ethtool_ringparam ringparam;
951
952 if (!dev->ethtool_ops->set_ringparam)
953 return -EOPNOTSUPP;
954
955 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
956 return -EFAULT;
957
958 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
959 }
960
961 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
962 void __user *useraddr)
963 {
964 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
965
966 if (!dev->ethtool_ops->get_channels)
967 return -EOPNOTSUPP;
968
969 dev->ethtool_ops->get_channels(dev, &channels);
970
971 if (copy_to_user(useraddr, &channels, sizeof(channels)))
972 return -EFAULT;
973 return 0;
974 }
975
976 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
977 void __user *useraddr)
978 {
979 struct ethtool_channels channels;
980
981 if (!dev->ethtool_ops->set_channels)
982 return -EOPNOTSUPP;
983
984 if (copy_from_user(&channels, useraddr, sizeof(channels)))
985 return -EFAULT;
986
987 return dev->ethtool_ops->set_channels(dev, &channels);
988 }
989
990 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
991 {
992 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
993
994 if (!dev->ethtool_ops->get_pauseparam)
995 return -EOPNOTSUPP;
996
997 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
998
999 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1000 return -EFAULT;
1001 return 0;
1002 }
1003
1004 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1005 {
1006 struct ethtool_pauseparam pauseparam;
1007
1008 if (!dev->ethtool_ops->set_pauseparam)
1009 return -EOPNOTSUPP;
1010
1011 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1012 return -EFAULT;
1013
1014 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1015 }
1016
1017 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1018 {
1019 struct ethtool_test test;
1020 const struct ethtool_ops *ops = dev->ethtool_ops;
1021 u64 *data;
1022 int ret, test_len;
1023
1024 if (!ops->self_test || !ops->get_sset_count)
1025 return -EOPNOTSUPP;
1026
1027 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1028 if (test_len < 0)
1029 return test_len;
1030 WARN_ON(test_len == 0);
1031
1032 if (copy_from_user(&test, useraddr, sizeof(test)))
1033 return -EFAULT;
1034
1035 test.len = test_len;
1036 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1037 if (!data)
1038 return -ENOMEM;
1039
1040 ops->self_test(dev, &test, data);
1041
1042 ret = -EFAULT;
1043 if (copy_to_user(useraddr, &test, sizeof(test)))
1044 goto out;
1045 useraddr += sizeof(test);
1046 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1047 goto out;
1048 ret = 0;
1049
1050 out:
1051 kfree(data);
1052 return ret;
1053 }
1054
1055 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1056 {
1057 struct ethtool_gstrings gstrings;
1058 u8 *data;
1059 int ret;
1060
1061 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1062 return -EFAULT;
1063
1064 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1065 if (ret < 0)
1066 return ret;
1067
1068 gstrings.len = ret;
1069
1070 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1071 if (!data)
1072 return -ENOMEM;
1073
1074 __ethtool_get_strings(dev, gstrings.string_set, data);
1075
1076 ret = -EFAULT;
1077 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1078 goto out;
1079 useraddr += sizeof(gstrings);
1080 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1081 goto out;
1082 ret = 0;
1083
1084 out:
1085 kfree(data);
1086 return ret;
1087 }
1088
1089 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1090 {
1091 struct ethtool_value id;
1092 static bool busy;
1093 const struct ethtool_ops *ops = dev->ethtool_ops;
1094 int rc;
1095
1096 if (!ops->set_phys_id)
1097 return -EOPNOTSUPP;
1098
1099 if (busy)
1100 return -EBUSY;
1101
1102 if (copy_from_user(&id, useraddr, sizeof(id)))
1103 return -EFAULT;
1104
1105 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1106 if (rc < 0)
1107 return rc;
1108
1109 /* Drop the RTNL lock while waiting, but prevent reentry or
1110 * removal of the device.
1111 */
1112 busy = true;
1113 dev_hold(dev);
1114 rtnl_unlock();
1115
1116 if (rc == 0) {
1117 /* Driver will handle this itself */
1118 schedule_timeout_interruptible(
1119 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1120 } else {
1121 /* Driver expects to be called at twice the frequency in rc */
1122 int n = rc * 2, i, interval = HZ / n;
1123
1124 /* Count down seconds */
1125 do {
1126 /* Count down iterations per second */
1127 i = n;
1128 do {
1129 rtnl_lock();
1130 rc = ops->set_phys_id(dev,
1131 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1132 rtnl_unlock();
1133 if (rc)
1134 break;
1135 schedule_timeout_interruptible(interval);
1136 } while (!signal_pending(current) && --i != 0);
1137 } while (!signal_pending(current) &&
1138 (id.data == 0 || --id.data != 0));
1139 }
1140
1141 rtnl_lock();
1142 dev_put(dev);
1143 busy = false;
1144
1145 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1146 return rc;
1147 }
1148
1149 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1150 {
1151 struct ethtool_stats stats;
1152 const struct ethtool_ops *ops = dev->ethtool_ops;
1153 u64 *data;
1154 int ret, n_stats;
1155
1156 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1157 return -EOPNOTSUPP;
1158
1159 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1160 if (n_stats < 0)
1161 return n_stats;
1162 WARN_ON(n_stats == 0);
1163
1164 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1165 return -EFAULT;
1166
1167 stats.n_stats = n_stats;
1168 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1169 if (!data)
1170 return -ENOMEM;
1171
1172 ops->get_ethtool_stats(dev, &stats, data);
1173
1174 ret = -EFAULT;
1175 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1176 goto out;
1177 useraddr += sizeof(stats);
1178 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1179 goto out;
1180 ret = 0;
1181
1182 out:
1183 kfree(data);
1184 return ret;
1185 }
1186
1187 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1188 {
1189 struct ethtool_perm_addr epaddr;
1190
1191 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1192 return -EFAULT;
1193
1194 if (epaddr.size < dev->addr_len)
1195 return -ETOOSMALL;
1196 epaddr.size = dev->addr_len;
1197
1198 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1199 return -EFAULT;
1200 useraddr += sizeof(epaddr);
1201 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1202 return -EFAULT;
1203 return 0;
1204 }
1205
1206 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1207 u32 cmd, u32 (*actor)(struct net_device *))
1208 {
1209 struct ethtool_value edata = { .cmd = cmd };
1210
1211 if (!actor)
1212 return -EOPNOTSUPP;
1213
1214 edata.data = actor(dev);
1215
1216 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1217 return -EFAULT;
1218 return 0;
1219 }
1220
1221 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1222 void (*actor)(struct net_device *, u32))
1223 {
1224 struct ethtool_value edata;
1225
1226 if (!actor)
1227 return -EOPNOTSUPP;
1228
1229 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1230 return -EFAULT;
1231
1232 actor(dev, edata.data);
1233 return 0;
1234 }
1235
1236 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1237 int (*actor)(struct net_device *, u32))
1238 {
1239 struct ethtool_value edata;
1240
1241 if (!actor)
1242 return -EOPNOTSUPP;
1243
1244 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1245 return -EFAULT;
1246
1247 return actor(dev, edata.data);
1248 }
1249
1250 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1251 char __user *useraddr)
1252 {
1253 struct ethtool_flash efl;
1254
1255 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1256 return -EFAULT;
1257
1258 if (!dev->ethtool_ops->flash_device)
1259 return -EOPNOTSUPP;
1260
1261 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
1262
1263 return dev->ethtool_ops->flash_device(dev, &efl);
1264 }
1265
1266 static int ethtool_set_dump(struct net_device *dev,
1267 void __user *useraddr)
1268 {
1269 struct ethtool_dump dump;
1270
1271 if (!dev->ethtool_ops->set_dump)
1272 return -EOPNOTSUPP;
1273
1274 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1275 return -EFAULT;
1276
1277 return dev->ethtool_ops->set_dump(dev, &dump);
1278 }
1279
1280 static int ethtool_get_dump_flag(struct net_device *dev,
1281 void __user *useraddr)
1282 {
1283 int ret;
1284 struct ethtool_dump dump;
1285 const struct ethtool_ops *ops = dev->ethtool_ops;
1286
1287 if (!ops->get_dump_flag)
1288 return -EOPNOTSUPP;
1289
1290 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1291 return -EFAULT;
1292
1293 ret = ops->get_dump_flag(dev, &dump);
1294 if (ret)
1295 return ret;
1296
1297 if (copy_to_user(useraddr, &dump, sizeof(dump)))
1298 return -EFAULT;
1299 return 0;
1300 }
1301
1302 static int ethtool_get_dump_data(struct net_device *dev,
1303 void __user *useraddr)
1304 {
1305 int ret;
1306 __u32 len;
1307 struct ethtool_dump dump, tmp;
1308 const struct ethtool_ops *ops = dev->ethtool_ops;
1309 void *data = NULL;
1310
1311 if (!ops->get_dump_data || !ops->get_dump_flag)
1312 return -EOPNOTSUPP;
1313
1314 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1315 return -EFAULT;
1316
1317 memset(&tmp, 0, sizeof(tmp));
1318 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
1319 ret = ops->get_dump_flag(dev, &tmp);
1320 if (ret)
1321 return ret;
1322
1323 len = min(tmp.len, dump.len);
1324 if (!len)
1325 return -EFAULT;
1326
1327 /* Don't ever let the driver think there's more space available
1328 * than it requested with .get_dump_flag().
1329 */
1330 dump.len = len;
1331
1332 /* Always allocate enough space to hold the whole thing so that the
1333 * driver does not need to check the length and bother with partial
1334 * dumping.
1335 */
1336 data = vzalloc(tmp.len);
1337 if (!data)
1338 return -ENOMEM;
1339 ret = ops->get_dump_data(dev, &dump, data);
1340 if (ret)
1341 goto out;
1342
1343 /* There are two sane possibilities:
1344 * 1. The driver's .get_dump_data() does not touch dump.len.
1345 * 2. Or it may set dump.len to how much it really writes, which
1346 * should be tmp.len (or len if it can do a partial dump).
1347 * In any case respond to userspace with the actual length of data
1348 * it's receiving.
1349 */
1350 WARN_ON(dump.len != len && dump.len != tmp.len);
1351 dump.len = len;
1352
1353 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
1354 ret = -EFAULT;
1355 goto out;
1356 }
1357 useraddr += offsetof(struct ethtool_dump, data);
1358 if (copy_to_user(useraddr, data, len))
1359 ret = -EFAULT;
1360 out:
1361 vfree(data);
1362 return ret;
1363 }
1364
1365 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
1366 {
1367 int err = 0;
1368 struct ethtool_ts_info info;
1369 const struct ethtool_ops *ops = dev->ethtool_ops;
1370 struct phy_device *phydev = dev->phydev;
1371
1372 memset(&info, 0, sizeof(info));
1373 info.cmd = ETHTOOL_GET_TS_INFO;
1374
1375 if (phydev && phydev->drv && phydev->drv->ts_info) {
1376 err = phydev->drv->ts_info(phydev, &info);
1377 } else if (ops->get_ts_info) {
1378 err = ops->get_ts_info(dev, &info);
1379 } else {
1380 info.so_timestamping =
1381 SOF_TIMESTAMPING_RX_SOFTWARE |
1382 SOF_TIMESTAMPING_SOFTWARE;
1383 info.phc_index = -1;
1384 }
1385
1386 if (err)
1387 return err;
1388
1389 if (copy_to_user(useraddr, &info, sizeof(info)))
1390 err = -EFAULT;
1391
1392 return err;
1393 }
1394
1395 static int ethtool_get_module_info(struct net_device *dev,
1396 void __user *useraddr)
1397 {
1398 int ret;
1399 struct ethtool_modinfo modinfo;
1400 const struct ethtool_ops *ops = dev->ethtool_ops;
1401
1402 if (!ops->get_module_info)
1403 return -EOPNOTSUPP;
1404
1405 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
1406 return -EFAULT;
1407
1408 ret = ops->get_module_info(dev, &modinfo);
1409 if (ret)
1410 return ret;
1411
1412 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
1413 return -EFAULT;
1414
1415 return 0;
1416 }
1417
1418 static int ethtool_get_module_eeprom(struct net_device *dev,
1419 void __user *useraddr)
1420 {
1421 int ret;
1422 struct ethtool_modinfo modinfo;
1423 const struct ethtool_ops *ops = dev->ethtool_ops;
1424
1425 if (!ops->get_module_info || !ops->get_module_eeprom)
1426 return -EOPNOTSUPP;
1427
1428 ret = ops->get_module_info(dev, &modinfo);
1429 if (ret)
1430 return ret;
1431
1432 return ethtool_get_any_eeprom(dev, useraddr, ops->get_module_eeprom,
1433 modinfo.eeprom_len);
1434 }
1435
1436 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
1437
1438 int dev_ethtool(struct net *net, struct ifreq *ifr)
1439 {
1440 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1441 void __user *useraddr = ifr->ifr_data;
1442 u32 ethcmd;
1443 int rc;
1444 netdev_features_t old_features;
1445
1446 if (!dev || !netif_device_present(dev))
1447 return -ENODEV;
1448
1449 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1450 return -EFAULT;
1451
1452 /* Allow some commands to be done by anyone */
1453 switch (ethcmd) {
1454 case ETHTOOL_GSET:
1455 case ETHTOOL_GDRVINFO:
1456 case ETHTOOL_GMSGLVL:
1457 case ETHTOOL_GLINK:
1458 case ETHTOOL_GCOALESCE:
1459 case ETHTOOL_GRINGPARAM:
1460 case ETHTOOL_GPAUSEPARAM:
1461 case ETHTOOL_GRXCSUM:
1462 case ETHTOOL_GTXCSUM:
1463 case ETHTOOL_GSG:
1464 case ETHTOOL_GSSET_INFO:
1465 case ETHTOOL_GSTRINGS:
1466 case ETHTOOL_GSTATS:
1467 case ETHTOOL_GTSO:
1468 case ETHTOOL_GPERMADDR:
1469 case ETHTOOL_GUFO:
1470 case ETHTOOL_GGSO:
1471 case ETHTOOL_GGRO:
1472 case ETHTOOL_GFLAGS:
1473 case ETHTOOL_GPFLAGS:
1474 case ETHTOOL_GRXFH:
1475 case ETHTOOL_GRXRINGS:
1476 case ETHTOOL_GRXCLSRLCNT:
1477 case ETHTOOL_GRXCLSRULE:
1478 case ETHTOOL_GRXCLSRLALL:
1479 case ETHTOOL_GRXFHINDIR:
1480 case ETHTOOL_GFEATURES:
1481 case ETHTOOL_GCHANNELS:
1482 case ETHTOOL_GET_TS_INFO:
1483 case ETHTOOL_GEEE:
1484 break;
1485 default:
1486 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
1487 return -EPERM;
1488 }
1489
1490 if (dev->ethtool_ops->begin) {
1491 rc = dev->ethtool_ops->begin(dev);
1492 if (rc < 0)
1493 return rc;
1494 }
1495 old_features = dev->features;
1496
1497 switch (ethcmd) {
1498 case ETHTOOL_GSET:
1499 rc = ethtool_get_settings(dev, useraddr);
1500 break;
1501 case ETHTOOL_SSET:
1502 rc = ethtool_set_settings(dev, useraddr);
1503 break;
1504 case ETHTOOL_GDRVINFO:
1505 rc = ethtool_get_drvinfo(dev, useraddr);
1506 break;
1507 case ETHTOOL_GREGS:
1508 rc = ethtool_get_regs(dev, useraddr);
1509 break;
1510 case ETHTOOL_GWOL:
1511 rc = ethtool_get_wol(dev, useraddr);
1512 break;
1513 case ETHTOOL_SWOL:
1514 rc = ethtool_set_wol(dev, useraddr);
1515 break;
1516 case ETHTOOL_GMSGLVL:
1517 rc = ethtool_get_value(dev, useraddr, ethcmd,
1518 dev->ethtool_ops->get_msglevel);
1519 break;
1520 case ETHTOOL_SMSGLVL:
1521 rc = ethtool_set_value_void(dev, useraddr,
1522 dev->ethtool_ops->set_msglevel);
1523 break;
1524 case ETHTOOL_GEEE:
1525 rc = ethtool_get_eee(dev, useraddr);
1526 break;
1527 case ETHTOOL_SEEE:
1528 rc = ethtool_set_eee(dev, useraddr);
1529 break;
1530 case ETHTOOL_NWAY_RST:
1531 rc = ethtool_nway_reset(dev);
1532 break;
1533 case ETHTOOL_GLINK:
1534 rc = ethtool_get_link(dev, useraddr);
1535 break;
1536 case ETHTOOL_GEEPROM:
1537 rc = ethtool_get_eeprom(dev, useraddr);
1538 break;
1539 case ETHTOOL_SEEPROM:
1540 rc = ethtool_set_eeprom(dev, useraddr);
1541 break;
1542 case ETHTOOL_GCOALESCE:
1543 rc = ethtool_get_coalesce(dev, useraddr);
1544 break;
1545 case ETHTOOL_SCOALESCE:
1546 rc = ethtool_set_coalesce(dev, useraddr);
1547 break;
1548 case ETHTOOL_GRINGPARAM:
1549 rc = ethtool_get_ringparam(dev, useraddr);
1550 break;
1551 case ETHTOOL_SRINGPARAM:
1552 rc = ethtool_set_ringparam(dev, useraddr);
1553 break;
1554 case ETHTOOL_GPAUSEPARAM:
1555 rc = ethtool_get_pauseparam(dev, useraddr);
1556 break;
1557 case ETHTOOL_SPAUSEPARAM:
1558 rc = ethtool_set_pauseparam(dev, useraddr);
1559 break;
1560 case ETHTOOL_TEST:
1561 rc = ethtool_self_test(dev, useraddr);
1562 break;
1563 case ETHTOOL_GSTRINGS:
1564 rc = ethtool_get_strings(dev, useraddr);
1565 break;
1566 case ETHTOOL_PHYS_ID:
1567 rc = ethtool_phys_id(dev, useraddr);
1568 break;
1569 case ETHTOOL_GSTATS:
1570 rc = ethtool_get_stats(dev, useraddr);
1571 break;
1572 case ETHTOOL_GPERMADDR:
1573 rc = ethtool_get_perm_addr(dev, useraddr);
1574 break;
1575 case ETHTOOL_GFLAGS:
1576 rc = ethtool_get_value(dev, useraddr, ethcmd,
1577 __ethtool_get_flags);
1578 break;
1579 case ETHTOOL_SFLAGS:
1580 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1581 break;
1582 case ETHTOOL_GPFLAGS:
1583 rc = ethtool_get_value(dev, useraddr, ethcmd,
1584 dev->ethtool_ops->get_priv_flags);
1585 break;
1586 case ETHTOOL_SPFLAGS:
1587 rc = ethtool_set_value(dev, useraddr,
1588 dev->ethtool_ops->set_priv_flags);
1589 break;
1590 case ETHTOOL_GRXFH:
1591 case ETHTOOL_GRXRINGS:
1592 case ETHTOOL_GRXCLSRLCNT:
1593 case ETHTOOL_GRXCLSRULE:
1594 case ETHTOOL_GRXCLSRLALL:
1595 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1596 break;
1597 case ETHTOOL_SRXFH:
1598 case ETHTOOL_SRXCLSRLDEL:
1599 case ETHTOOL_SRXCLSRLINS:
1600 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1601 break;
1602 case ETHTOOL_FLASHDEV:
1603 rc = ethtool_flash_device(dev, useraddr);
1604 break;
1605 case ETHTOOL_RESET:
1606 rc = ethtool_reset(dev, useraddr);
1607 break;
1608 case ETHTOOL_GSSET_INFO:
1609 rc = ethtool_get_sset_info(dev, useraddr);
1610 break;
1611 case ETHTOOL_GRXFHINDIR:
1612 rc = ethtool_get_rxfh_indir(dev, useraddr);
1613 break;
1614 case ETHTOOL_SRXFHINDIR:
1615 rc = ethtool_set_rxfh_indir(dev, useraddr);
1616 break;
1617 case ETHTOOL_GFEATURES:
1618 rc = ethtool_get_features(dev, useraddr);
1619 break;
1620 case ETHTOOL_SFEATURES:
1621 rc = ethtool_set_features(dev, useraddr);
1622 break;
1623 case ETHTOOL_GTXCSUM:
1624 case ETHTOOL_GRXCSUM:
1625 case ETHTOOL_GSG:
1626 case ETHTOOL_GTSO:
1627 case ETHTOOL_GUFO:
1628 case ETHTOOL_GGSO:
1629 case ETHTOOL_GGRO:
1630 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1631 break;
1632 case ETHTOOL_STXCSUM:
1633 case ETHTOOL_SRXCSUM:
1634 case ETHTOOL_SSG:
1635 case ETHTOOL_STSO:
1636 case ETHTOOL_SUFO:
1637 case ETHTOOL_SGSO:
1638 case ETHTOOL_SGRO:
1639 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1640 break;
1641 case ETHTOOL_GCHANNELS:
1642 rc = ethtool_get_channels(dev, useraddr);
1643 break;
1644 case ETHTOOL_SCHANNELS:
1645 rc = ethtool_set_channels(dev, useraddr);
1646 break;
1647 case ETHTOOL_SET_DUMP:
1648 rc = ethtool_set_dump(dev, useraddr);
1649 break;
1650 case ETHTOOL_GET_DUMP_FLAG:
1651 rc = ethtool_get_dump_flag(dev, useraddr);
1652 break;
1653 case ETHTOOL_GET_DUMP_DATA:
1654 rc = ethtool_get_dump_data(dev, useraddr);
1655 break;
1656 case ETHTOOL_GET_TS_INFO:
1657 rc = ethtool_get_ts_info(dev, useraddr);
1658 break;
1659 case ETHTOOL_GMODULEINFO:
1660 rc = ethtool_get_module_info(dev, useraddr);
1661 break;
1662 case ETHTOOL_GMODULEEEPROM:
1663 rc = ethtool_get_module_eeprom(dev, useraddr);
1664 break;
1665 default:
1666 rc = -EOPNOTSUPP;
1667 }
1668
1669 if (dev->ethtool_ops->complete)
1670 dev->ethtool_ops->complete(dev);
1671
1672 if (old_features != dev->features)
1673 netdev_features_change(dev);
1674
1675 return rc;
1676 }
Linus' kernel tree