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Merge tag 'for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux...
[deliverable/linux.git] / net / core / ethtool.c
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
36 u32 ethtool_op_get_link(struct net_device *dev)
37 {
38 return netif_carrier_ok(dev) ? 1 : 0;
39 }
40 EXPORT_SYMBOL(ethtool_op_get_link);
41
42 int 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 }
51 EXPORT_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
57 static 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_TSO6_BIT] = "tx-tcp6-segmentation",
83 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
84 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
85 [NETIF_F_GSO_IPIP_BIT] = "tx-ipip-segmentation",
86 [NETIF_F_GSO_SIT_BIT] = "tx-sit-segmentation",
87 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
88
89 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
90 [NETIF_F_SCTP_CSUM_BIT] = "tx-checksum-sctp",
91 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
92 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
93 [NETIF_F_RXHASH_BIT] = "rx-hashing",
94 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
95 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
96 [NETIF_F_LOOPBACK_BIT] = "loopback",
97 [NETIF_F_RXFCS_BIT] = "rx-fcs",
98 [NETIF_F_RXALL_BIT] = "rx-all",
99 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
100 [NETIF_F_BUSY_POLL_BIT] = "busy-poll",
101 [NETIF_F_HW_SWITCH_OFFLOAD_BIT] = "hw-switch-offload",
102 };
103
104 static const char
105 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
106 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
107 [ETH_RSS_HASH_XOR_BIT] = "xor",
108 };
109
110 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
111 {
112 struct ethtool_gfeatures cmd = {
113 .cmd = ETHTOOL_GFEATURES,
114 .size = ETHTOOL_DEV_FEATURE_WORDS,
115 };
116 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
117 u32 __user *sizeaddr;
118 u32 copy_size;
119 int i;
120
121 /* in case feature bits run out again */
122 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
123
124 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
125 features[i].available = (u32)(dev->hw_features >> (32 * i));
126 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
127 features[i].active = (u32)(dev->features >> (32 * i));
128 features[i].never_changed =
129 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
130 }
131
132 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
133 if (get_user(copy_size, sizeaddr))
134 return -EFAULT;
135
136 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
137 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
138
139 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
140 return -EFAULT;
141 useraddr += sizeof(cmd);
142 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
143 return -EFAULT;
144
145 return 0;
146 }
147
148 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
149 {
150 struct ethtool_sfeatures cmd;
151 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
152 netdev_features_t wanted = 0, valid = 0;
153 int i, ret = 0;
154
155 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
156 return -EFAULT;
157 useraddr += sizeof(cmd);
158
159 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
160 return -EINVAL;
161
162 if (copy_from_user(features, useraddr, sizeof(features)))
163 return -EFAULT;
164
165 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
166 valid |= (netdev_features_t)features[i].valid << (32 * i);
167 wanted |= (netdev_features_t)features[i].requested << (32 * i);
168 }
169
170 if (valid & ~NETIF_F_ETHTOOL_BITS)
171 return -EINVAL;
172
173 if (valid & ~dev->hw_features) {
174 valid &= dev->hw_features;
175 ret |= ETHTOOL_F_UNSUPPORTED;
176 }
177
178 dev->wanted_features &= ~valid;
179 dev->wanted_features |= wanted & valid;
180 __netdev_update_features(dev);
181
182 if ((dev->wanted_features ^ dev->features) & valid)
183 ret |= ETHTOOL_F_WISH;
184
185 return ret;
186 }
187
188 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
189 {
190 const struct ethtool_ops *ops = dev->ethtool_ops;
191
192 if (sset == ETH_SS_FEATURES)
193 return ARRAY_SIZE(netdev_features_strings);
194
195 if (sset == ETH_SS_RSS_HASH_FUNCS)
196 return ARRAY_SIZE(rss_hash_func_strings);
197
198 if (ops->get_sset_count && ops->get_strings)
199 return ops->get_sset_count(dev, sset);
200 else
201 return -EOPNOTSUPP;
202 }
203
204 static void __ethtool_get_strings(struct net_device *dev,
205 u32 stringset, u8 *data)
206 {
207 const struct ethtool_ops *ops = dev->ethtool_ops;
208
209 if (stringset == ETH_SS_FEATURES)
210 memcpy(data, netdev_features_strings,
211 sizeof(netdev_features_strings));
212 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
213 memcpy(data, rss_hash_func_strings,
214 sizeof(rss_hash_func_strings));
215 else
216 /* ops->get_strings is valid because checked earlier */
217 ops->get_strings(dev, stringset, data);
218 }
219
220 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
221 {
222 /* feature masks of legacy discrete ethtool ops */
223
224 switch (eth_cmd) {
225 case ETHTOOL_GTXCSUM:
226 case ETHTOOL_STXCSUM:
227 return NETIF_F_ALL_CSUM | NETIF_F_SCTP_CSUM;
228 case ETHTOOL_GRXCSUM:
229 case ETHTOOL_SRXCSUM:
230 return NETIF_F_RXCSUM;
231 case ETHTOOL_GSG:
232 case ETHTOOL_SSG:
233 return NETIF_F_SG;
234 case ETHTOOL_GTSO:
235 case ETHTOOL_STSO:
236 return NETIF_F_ALL_TSO;
237 case ETHTOOL_GUFO:
238 case ETHTOOL_SUFO:
239 return NETIF_F_UFO;
240 case ETHTOOL_GGSO:
241 case ETHTOOL_SGSO:
242 return NETIF_F_GSO;
243 case ETHTOOL_GGRO:
244 case ETHTOOL_SGRO:
245 return NETIF_F_GRO;
246 default:
247 BUG();
248 }
249 }
250
251 static int ethtool_get_one_feature(struct net_device *dev,
252 char __user *useraddr, u32 ethcmd)
253 {
254 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
255 struct ethtool_value edata = {
256 .cmd = ethcmd,
257 .data = !!(dev->features & mask),
258 };
259
260 if (copy_to_user(useraddr, &edata, sizeof(edata)))
261 return -EFAULT;
262 return 0;
263 }
264
265 static int ethtool_set_one_feature(struct net_device *dev,
266 void __user *useraddr, u32 ethcmd)
267 {
268 struct ethtool_value edata;
269 netdev_features_t mask;
270
271 if (copy_from_user(&edata, useraddr, sizeof(edata)))
272 return -EFAULT;
273
274 mask = ethtool_get_feature_mask(ethcmd);
275 mask &= dev->hw_features;
276 if (!mask)
277 return -EOPNOTSUPP;
278
279 if (edata.data)
280 dev->wanted_features |= mask;
281 else
282 dev->wanted_features &= ~mask;
283
284 __netdev_update_features(dev);
285
286 return 0;
287 }
288
289 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
290 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
291 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
292 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
293 NETIF_F_RXHASH)
294
295 static u32 __ethtool_get_flags(struct net_device *dev)
296 {
297 u32 flags = 0;
298
299 if (dev->features & NETIF_F_LRO)
300 flags |= ETH_FLAG_LRO;
301 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
302 flags |= ETH_FLAG_RXVLAN;
303 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
304 flags |= ETH_FLAG_TXVLAN;
305 if (dev->features & NETIF_F_NTUPLE)
306 flags |= ETH_FLAG_NTUPLE;
307 if (dev->features & NETIF_F_RXHASH)
308 flags |= ETH_FLAG_RXHASH;
309
310 return flags;
311 }
312
313 static int __ethtool_set_flags(struct net_device *dev, u32 data)
314 {
315 netdev_features_t features = 0, changed;
316
317 if (data & ~ETH_ALL_FLAGS)
318 return -EINVAL;
319
320 if (data & ETH_FLAG_LRO)
321 features |= NETIF_F_LRO;
322 if (data & ETH_FLAG_RXVLAN)
323 features |= NETIF_F_HW_VLAN_CTAG_RX;
324 if (data & ETH_FLAG_TXVLAN)
325 features |= NETIF_F_HW_VLAN_CTAG_TX;
326 if (data & ETH_FLAG_NTUPLE)
327 features |= NETIF_F_NTUPLE;
328 if (data & ETH_FLAG_RXHASH)
329 features |= NETIF_F_RXHASH;
330
331 /* allow changing only bits set in hw_features */
332 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
333 if (changed & ~dev->hw_features)
334 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
335
336 dev->wanted_features =
337 (dev->wanted_features & ~changed) | (features & changed);
338
339 __netdev_update_features(dev);
340
341 return 0;
342 }
343
344 int __ethtool_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
345 {
346 ASSERT_RTNL();
347
348 if (!dev->ethtool_ops->get_settings)
349 return -EOPNOTSUPP;
350
351 memset(cmd, 0, sizeof(struct ethtool_cmd));
352 cmd->cmd = ETHTOOL_GSET;
353 return dev->ethtool_ops->get_settings(dev, cmd);
354 }
355 EXPORT_SYMBOL(__ethtool_get_settings);
356
357 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
358 {
359 int err;
360 struct ethtool_cmd cmd;
361
362 err = __ethtool_get_settings(dev, &cmd);
363 if (err < 0)
364 return err;
365
366 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
367 return -EFAULT;
368 return 0;
369 }
370
371 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
372 {
373 struct ethtool_cmd cmd;
374
375 if (!dev->ethtool_ops->set_settings)
376 return -EOPNOTSUPP;
377
378 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
379 return -EFAULT;
380
381 return dev->ethtool_ops->set_settings(dev, &cmd);
382 }
383
384 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
385 void __user *useraddr)
386 {
387 struct ethtool_drvinfo info;
388 const struct ethtool_ops *ops = dev->ethtool_ops;
389
390 memset(&info, 0, sizeof(info));
391 info.cmd = ETHTOOL_GDRVINFO;
392 if (ops->get_drvinfo) {
393 ops->get_drvinfo(dev, &info);
394 } else if (dev->dev.parent && dev->dev.parent->driver) {
395 strlcpy(info.bus_info, dev_name(dev->dev.parent),
396 sizeof(info.bus_info));
397 strlcpy(info.driver, dev->dev.parent->driver->name,
398 sizeof(info.driver));
399 } else {
400 return -EOPNOTSUPP;
401 }
402
403 /*
404 * this method of obtaining string set info is deprecated;
405 * Use ETHTOOL_GSSET_INFO instead.
406 */
407 if (ops->get_sset_count) {
408 int rc;
409
410 rc = ops->get_sset_count(dev, ETH_SS_TEST);
411 if (rc >= 0)
412 info.testinfo_len = rc;
413 rc = ops->get_sset_count(dev, ETH_SS_STATS);
414 if (rc >= 0)
415 info.n_stats = rc;
416 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
417 if (rc >= 0)
418 info.n_priv_flags = rc;
419 }
420 if (ops->get_regs_len)
421 info.regdump_len = ops->get_regs_len(dev);
422 if (ops->get_eeprom_len)
423 info.eedump_len = ops->get_eeprom_len(dev);
424
425 if (copy_to_user(useraddr, &info, sizeof(info)))
426 return -EFAULT;
427 return 0;
428 }
429
430 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
431 void __user *useraddr)
432 {
433 struct ethtool_sset_info info;
434 u64 sset_mask;
435 int i, idx = 0, n_bits = 0, ret, rc;
436 u32 *info_buf = NULL;
437
438 if (copy_from_user(&info, useraddr, sizeof(info)))
439 return -EFAULT;
440
441 /* store copy of mask, because we zero struct later on */
442 sset_mask = info.sset_mask;
443 if (!sset_mask)
444 return 0;
445
446 /* calculate size of return buffer */
447 n_bits = hweight64(sset_mask);
448
449 memset(&info, 0, sizeof(info));
450 info.cmd = ETHTOOL_GSSET_INFO;
451
452 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
453 if (!info_buf)
454 return -ENOMEM;
455
456 /*
457 * fill return buffer based on input bitmask and successful
458 * get_sset_count return
459 */
460 for (i = 0; i < 64; i++) {
461 if (!(sset_mask & (1ULL << i)))
462 continue;
463
464 rc = __ethtool_get_sset_count(dev, i);
465 if (rc >= 0) {
466 info.sset_mask |= (1ULL << i);
467 info_buf[idx++] = rc;
468 }
469 }
470
471 ret = -EFAULT;
472 if (copy_to_user(useraddr, &info, sizeof(info)))
473 goto out;
474
475 useraddr += offsetof(struct ethtool_sset_info, data);
476 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
477 goto out;
478
479 ret = 0;
480
481 out:
482 kfree(info_buf);
483 return ret;
484 }
485
486 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
487 u32 cmd, void __user *useraddr)
488 {
489 struct ethtool_rxnfc info;
490 size_t info_size = sizeof(info);
491 int rc;
492
493 if (!dev->ethtool_ops->set_rxnfc)
494 return -EOPNOTSUPP;
495
496 /* struct ethtool_rxnfc was originally defined for
497 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
498 * members. User-space might still be using that
499 * definition. */
500 if (cmd == ETHTOOL_SRXFH)
501 info_size = (offsetof(struct ethtool_rxnfc, data) +
502 sizeof(info.data));
503
504 if (copy_from_user(&info, useraddr, info_size))
505 return -EFAULT;
506
507 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
508 if (rc)
509 return rc;
510
511 if (cmd == ETHTOOL_SRXCLSRLINS &&
512 copy_to_user(useraddr, &info, info_size))
513 return -EFAULT;
514
515 return 0;
516 }
517
518 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
519 u32 cmd, void __user *useraddr)
520 {
521 struct ethtool_rxnfc info;
522 size_t info_size = sizeof(info);
523 const struct ethtool_ops *ops = dev->ethtool_ops;
524 int ret;
525 void *rule_buf = NULL;
526
527 if (!ops->get_rxnfc)
528 return -EOPNOTSUPP;
529
530 /* struct ethtool_rxnfc was originally defined for
531 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
532 * members. User-space might still be using that
533 * definition. */
534 if (cmd == ETHTOOL_GRXFH)
535 info_size = (offsetof(struct ethtool_rxnfc, data) +
536 sizeof(info.data));
537
538 if (copy_from_user(&info, useraddr, info_size))
539 return -EFAULT;
540
541 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
542 if (info.rule_cnt > 0) {
543 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
544 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
545 GFP_USER);
546 if (!rule_buf)
547 return -ENOMEM;
548 }
549 }
550
551 ret = ops->get_rxnfc(dev, &info, rule_buf);
552 if (ret < 0)
553 goto err_out;
554
555 ret = -EFAULT;
556 if (copy_to_user(useraddr, &info, info_size))
557 goto err_out;
558
559 if (rule_buf) {
560 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
561 if (copy_to_user(useraddr, rule_buf,
562 info.rule_cnt * sizeof(u32)))
563 goto err_out;
564 }
565 ret = 0;
566
567 err_out:
568 kfree(rule_buf);
569
570 return ret;
571 }
572
573 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
574 struct ethtool_rxnfc *rx_rings,
575 u32 size)
576 {
577 int i;
578
579 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
580 return -EFAULT;
581
582 /* Validate ring indices */
583 for (i = 0; i < size; i++)
584 if (indir[i] >= rx_rings->data)
585 return -EINVAL;
586
587 return 0;
588 }
589
590 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN];
591
592 void netdev_rss_key_fill(void *buffer, size_t len)
593 {
594 BUG_ON(len > sizeof(netdev_rss_key));
595 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
596 memcpy(buffer, netdev_rss_key, len);
597 }
598 EXPORT_SYMBOL(netdev_rss_key_fill);
599
600 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
601 void __user *useraddr)
602 {
603 u32 user_size, dev_size;
604 u32 *indir;
605 int ret;
606
607 if (!dev->ethtool_ops->get_rxfh_indir_size ||
608 !dev->ethtool_ops->get_rxfh)
609 return -EOPNOTSUPP;
610 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
611 if (dev_size == 0)
612 return -EOPNOTSUPP;
613
614 if (copy_from_user(&user_size,
615 useraddr + offsetof(struct ethtool_rxfh_indir, size),
616 sizeof(user_size)))
617 return -EFAULT;
618
619 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
620 &dev_size, sizeof(dev_size)))
621 return -EFAULT;
622
623 /* If the user buffer size is 0, this is just a query for the
624 * device table size. Otherwise, if it's smaller than the
625 * device table size it's an error.
626 */
627 if (user_size < dev_size)
628 return user_size == 0 ? 0 : -EINVAL;
629
630 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
631 if (!indir)
632 return -ENOMEM;
633
634 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
635 if (ret)
636 goto out;
637
638 if (copy_to_user(useraddr +
639 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
640 indir, dev_size * sizeof(indir[0])))
641 ret = -EFAULT;
642
643 out:
644 kfree(indir);
645 return ret;
646 }
647
648 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
649 void __user *useraddr)
650 {
651 struct ethtool_rxnfc rx_rings;
652 u32 user_size, dev_size, i;
653 u32 *indir;
654 const struct ethtool_ops *ops = dev->ethtool_ops;
655 int ret;
656 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
657
658 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
659 !ops->get_rxnfc)
660 return -EOPNOTSUPP;
661
662 dev_size = ops->get_rxfh_indir_size(dev);
663 if (dev_size == 0)
664 return -EOPNOTSUPP;
665
666 if (copy_from_user(&user_size,
667 useraddr + offsetof(struct ethtool_rxfh_indir, size),
668 sizeof(user_size)))
669 return -EFAULT;
670
671 if (user_size != 0 && user_size != dev_size)
672 return -EINVAL;
673
674 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
675 if (!indir)
676 return -ENOMEM;
677
678 rx_rings.cmd = ETHTOOL_GRXRINGS;
679 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
680 if (ret)
681 goto out;
682
683 if (user_size == 0) {
684 for (i = 0; i < dev_size; i++)
685 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
686 } else {
687 ret = ethtool_copy_validate_indir(indir,
688 useraddr + ringidx_offset,
689 &rx_rings,
690 dev_size);
691 if (ret)
692 goto out;
693 }
694
695 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
696
697 out:
698 kfree(indir);
699 return ret;
700 }
701
702 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
703 void __user *useraddr)
704 {
705 int ret;
706 const struct ethtool_ops *ops = dev->ethtool_ops;
707 u32 user_indir_size, user_key_size;
708 u32 dev_indir_size = 0, dev_key_size = 0;
709 struct ethtool_rxfh rxfh;
710 u32 total_size;
711 u32 indir_bytes;
712 u32 *indir = NULL;
713 u8 dev_hfunc = 0;
714 u8 *hkey = NULL;
715 u8 *rss_config;
716
717 if (!ops->get_rxfh)
718 return -EOPNOTSUPP;
719
720 if (ops->get_rxfh_indir_size)
721 dev_indir_size = ops->get_rxfh_indir_size(dev);
722 if (ops->get_rxfh_key_size)
723 dev_key_size = ops->get_rxfh_key_size(dev);
724
725 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
726 return -EFAULT;
727 user_indir_size = rxfh.indir_size;
728 user_key_size = rxfh.key_size;
729
730 /* Check that reserved fields are 0 for now */
731 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
732 rxfh.rsvd8[2] || rxfh.rsvd32)
733 return -EINVAL;
734
735 rxfh.indir_size = dev_indir_size;
736 rxfh.key_size = dev_key_size;
737 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
738 return -EFAULT;
739
740 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
741 (user_key_size && (user_key_size != dev_key_size)))
742 return -EINVAL;
743
744 indir_bytes = user_indir_size * sizeof(indir[0]);
745 total_size = indir_bytes + user_key_size;
746 rss_config = kzalloc(total_size, GFP_USER);
747 if (!rss_config)
748 return -ENOMEM;
749
750 if (user_indir_size)
751 indir = (u32 *)rss_config;
752
753 if (user_key_size)
754 hkey = rss_config + indir_bytes;
755
756 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
757 if (ret)
758 goto out;
759
760 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
761 &dev_hfunc, sizeof(rxfh.hfunc))) {
762 ret = -EFAULT;
763 } else if (copy_to_user(useraddr +
764 offsetof(struct ethtool_rxfh, rss_config[0]),
765 rss_config, total_size)) {
766 ret = -EFAULT;
767 }
768 out:
769 kfree(rss_config);
770
771 return ret;
772 }
773
774 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
775 void __user *useraddr)
776 {
777 int ret;
778 const struct ethtool_ops *ops = dev->ethtool_ops;
779 struct ethtool_rxnfc rx_rings;
780 struct ethtool_rxfh rxfh;
781 u32 dev_indir_size = 0, dev_key_size = 0, i;
782 u32 *indir = NULL, indir_bytes = 0;
783 u8 *hkey = NULL;
784 u8 *rss_config;
785 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
786
787 if (!ops->get_rxnfc || !ops->set_rxfh)
788 return -EOPNOTSUPP;
789
790 if (ops->get_rxfh_indir_size)
791 dev_indir_size = ops->get_rxfh_indir_size(dev);
792 if (ops->get_rxfh_key_size)
793 dev_key_size = dev->ethtool_ops->get_rxfh_key_size(dev);
794
795 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
796 return -EFAULT;
797
798 /* Check that reserved fields are 0 for now */
799 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
800 rxfh.rsvd8[2] || rxfh.rsvd32)
801 return -EINVAL;
802
803 /* If either indir, hash key or function is valid, proceed further.
804 * Must request at least one change: indir size, hash key or function.
805 */
806 if ((rxfh.indir_size &&
807 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
808 rxfh.indir_size != dev_indir_size) ||
809 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
810 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
811 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
812 return -EINVAL;
813
814 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
815 indir_bytes = dev_indir_size * sizeof(indir[0]);
816
817 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
818 if (!rss_config)
819 return -ENOMEM;
820
821 rx_rings.cmd = ETHTOOL_GRXRINGS;
822 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
823 if (ret)
824 goto out;
825
826 /* rxfh.indir_size == 0 means reset the indir table to default.
827 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
828 */
829 if (rxfh.indir_size &&
830 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
831 indir = (u32 *)rss_config;
832 ret = ethtool_copy_validate_indir(indir,
833 useraddr + rss_cfg_offset,
834 &rx_rings,
835 rxfh.indir_size);
836 if (ret)
837 goto out;
838 } else if (rxfh.indir_size == 0) {
839 indir = (u32 *)rss_config;
840 for (i = 0; i < dev_indir_size; i++)
841 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
842 }
843
844 if (rxfh.key_size) {
845 hkey = rss_config + indir_bytes;
846 if (copy_from_user(hkey,
847 useraddr + rss_cfg_offset + indir_bytes,
848 rxfh.key_size)) {
849 ret = -EFAULT;
850 goto out;
851 }
852 }
853
854 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
855
856 out:
857 kfree(rss_config);
858 return ret;
859 }
860
861 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
862 {
863 struct ethtool_regs regs;
864 const struct ethtool_ops *ops = dev->ethtool_ops;
865 void *regbuf;
866 int reglen, ret;
867
868 if (!ops->get_regs || !ops->get_regs_len)
869 return -EOPNOTSUPP;
870
871 if (copy_from_user(&regs, useraddr, sizeof(regs)))
872 return -EFAULT;
873
874 reglen = ops->get_regs_len(dev);
875 if (regs.len > reglen)
876 regs.len = reglen;
877
878 regbuf = vzalloc(reglen);
879 if (reglen && !regbuf)
880 return -ENOMEM;
881
882 ops->get_regs(dev, &regs, regbuf);
883
884 ret = -EFAULT;
885 if (copy_to_user(useraddr, &regs, sizeof(regs)))
886 goto out;
887 useraddr += offsetof(struct ethtool_regs, data);
888 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
889 goto out;
890 ret = 0;
891
892 out:
893 vfree(regbuf);
894 return ret;
895 }
896
897 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
898 {
899 struct ethtool_value reset;
900 int ret;
901
902 if (!dev->ethtool_ops->reset)
903 return -EOPNOTSUPP;
904
905 if (copy_from_user(&reset, useraddr, sizeof(reset)))
906 return -EFAULT;
907
908 ret = dev->ethtool_ops->reset(dev, &reset.data);
909 if (ret)
910 return ret;
911
912 if (copy_to_user(useraddr, &reset, sizeof(reset)))
913 return -EFAULT;
914 return 0;
915 }
916
917 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
918 {
919 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
920
921 if (!dev->ethtool_ops->get_wol)
922 return -EOPNOTSUPP;
923
924 dev->ethtool_ops->get_wol(dev, &wol);
925
926 if (copy_to_user(useraddr, &wol, sizeof(wol)))
927 return -EFAULT;
928 return 0;
929 }
930
931 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
932 {
933 struct ethtool_wolinfo wol;
934
935 if (!dev->ethtool_ops->set_wol)
936 return -EOPNOTSUPP;
937
938 if (copy_from_user(&wol, useraddr, sizeof(wol)))
939 return -EFAULT;
940
941 return dev->ethtool_ops->set_wol(dev, &wol);
942 }
943
944 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
945 {
946 struct ethtool_eee edata;
947 int rc;
948
949 if (!dev->ethtool_ops->get_eee)
950 return -EOPNOTSUPP;
951
952 memset(&edata, 0, sizeof(struct ethtool_eee));
953 edata.cmd = ETHTOOL_GEEE;
954 rc = dev->ethtool_ops->get_eee(dev, &edata);
955
956 if (rc)
957 return rc;
958
959 if (copy_to_user(useraddr, &edata, sizeof(edata)))
960 return -EFAULT;
961
962 return 0;
963 }
964
965 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
966 {
967 struct ethtool_eee edata;
968
969 if (!dev->ethtool_ops->set_eee)
970 return -EOPNOTSUPP;
971
972 if (copy_from_user(&edata, useraddr, sizeof(edata)))
973 return -EFAULT;
974
975 return dev->ethtool_ops->set_eee(dev, &edata);
976 }
977
978 static int ethtool_nway_reset(struct net_device *dev)
979 {
980 if (!dev->ethtool_ops->nway_reset)
981 return -EOPNOTSUPP;
982
983 return dev->ethtool_ops->nway_reset(dev);
984 }
985
986 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
987 {
988 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
989
990 if (!dev->ethtool_ops->get_link)
991 return -EOPNOTSUPP;
992
993 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
994
995 if (copy_to_user(useraddr, &edata, sizeof(edata)))
996 return -EFAULT;
997 return 0;
998 }
999
1000 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1001 int (*getter)(struct net_device *,
1002 struct ethtool_eeprom *, u8 *),
1003 u32 total_len)
1004 {
1005 struct ethtool_eeprom eeprom;
1006 void __user *userbuf = useraddr + sizeof(eeprom);
1007 u32 bytes_remaining;
1008 u8 *data;
1009 int ret = 0;
1010
1011 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1012 return -EFAULT;
1013
1014 /* Check for wrap and zero */
1015 if (eeprom.offset + eeprom.len <= eeprom.offset)
1016 return -EINVAL;
1017
1018 /* Check for exceeding total eeprom len */
1019 if (eeprom.offset + eeprom.len > total_len)
1020 return -EINVAL;
1021
1022 data = kmalloc(PAGE_SIZE, GFP_USER);
1023 if (!data)
1024 return -ENOMEM;
1025
1026 bytes_remaining = eeprom.len;
1027 while (bytes_remaining > 0) {
1028 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1029
1030 ret = getter(dev, &eeprom, data);
1031 if (ret)
1032 break;
1033 if (copy_to_user(userbuf, data, eeprom.len)) {
1034 ret = -EFAULT;
1035 break;
1036 }
1037 userbuf += eeprom.len;
1038 eeprom.offset += eeprom.len;
1039 bytes_remaining -= eeprom.len;
1040 }
1041
1042 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1043 eeprom.offset -= eeprom.len;
1044 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1045 ret = -EFAULT;
1046
1047 kfree(data);
1048 return ret;
1049 }
1050
1051 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1052 {
1053 const struct ethtool_ops *ops = dev->ethtool_ops;
1054
1055 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1056 !ops->get_eeprom_len(dev))
1057 return -EOPNOTSUPP;
1058
1059 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1060 ops->get_eeprom_len(dev));
1061 }
1062
1063 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1064 {
1065 struct ethtool_eeprom eeprom;
1066 const struct ethtool_ops *ops = dev->ethtool_ops;
1067 void __user *userbuf = useraddr + sizeof(eeprom);
1068 u32 bytes_remaining;
1069 u8 *data;
1070 int ret = 0;
1071
1072 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1073 !ops->get_eeprom_len(dev))
1074 return -EOPNOTSUPP;
1075
1076 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1077 return -EFAULT;
1078
1079 /* Check for wrap and zero */
1080 if (eeprom.offset + eeprom.len <= eeprom.offset)
1081 return -EINVAL;
1082
1083 /* Check for exceeding total eeprom len */
1084 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1085 return -EINVAL;
1086
1087 data = kmalloc(PAGE_SIZE, GFP_USER);
1088 if (!data)
1089 return -ENOMEM;
1090
1091 bytes_remaining = eeprom.len;
1092 while (bytes_remaining > 0) {
1093 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1094
1095 if (copy_from_user(data, userbuf, eeprom.len)) {
1096 ret = -EFAULT;
1097 break;
1098 }
1099 ret = ops->set_eeprom(dev, &eeprom, data);
1100 if (ret)
1101 break;
1102 userbuf += eeprom.len;
1103 eeprom.offset += eeprom.len;
1104 bytes_remaining -= eeprom.len;
1105 }
1106
1107 kfree(data);
1108 return ret;
1109 }
1110
1111 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1112 void __user *useraddr)
1113 {
1114 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1115
1116 if (!dev->ethtool_ops->get_coalesce)
1117 return -EOPNOTSUPP;
1118
1119 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1120
1121 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1122 return -EFAULT;
1123 return 0;
1124 }
1125
1126 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1127 void __user *useraddr)
1128 {
1129 struct ethtool_coalesce coalesce;
1130
1131 if (!dev->ethtool_ops->set_coalesce)
1132 return -EOPNOTSUPP;
1133
1134 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1135 return -EFAULT;
1136
1137 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1138 }
1139
1140 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1141 {
1142 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1143
1144 if (!dev->ethtool_ops->get_ringparam)
1145 return -EOPNOTSUPP;
1146
1147 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1148
1149 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1150 return -EFAULT;
1151 return 0;
1152 }
1153
1154 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1155 {
1156 struct ethtool_ringparam ringparam;
1157
1158 if (!dev->ethtool_ops->set_ringparam)
1159 return -EOPNOTSUPP;
1160
1161 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1162 return -EFAULT;
1163
1164 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1165 }
1166
1167 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1168 void __user *useraddr)
1169 {
1170 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1171
1172 if (!dev->ethtool_ops->get_channels)
1173 return -EOPNOTSUPP;
1174
1175 dev->ethtool_ops->get_channels(dev, &channels);
1176
1177 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1178 return -EFAULT;
1179 return 0;
1180 }
1181
1182 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1183 void __user *useraddr)
1184 {
1185 struct ethtool_channels channels;
1186
1187 if (!dev->ethtool_ops->set_channels)
1188 return -EOPNOTSUPP;
1189
1190 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1191 return -EFAULT;
1192
1193 return dev->ethtool_ops->set_channels(dev, &channels);
1194 }
1195
1196 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1197 {
1198 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1199
1200 if (!dev->ethtool_ops->get_pauseparam)
1201 return -EOPNOTSUPP;
1202
1203 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1204
1205 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1206 return -EFAULT;
1207 return 0;
1208 }
1209
1210 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1211 {
1212 struct ethtool_pauseparam pauseparam;
1213
1214 if (!dev->ethtool_ops->set_pauseparam)
1215 return -EOPNOTSUPP;
1216
1217 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1218 return -EFAULT;
1219
1220 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1221 }
1222
1223 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1224 {
1225 struct ethtool_test test;
1226 const struct ethtool_ops *ops = dev->ethtool_ops;
1227 u64 *data;
1228 int ret, test_len;
1229
1230 if (!ops->self_test || !ops->get_sset_count)
1231 return -EOPNOTSUPP;
1232
1233 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1234 if (test_len < 0)
1235 return test_len;
1236 WARN_ON(test_len == 0);
1237
1238 if (copy_from_user(&test, useraddr, sizeof(test)))
1239 return -EFAULT;
1240
1241 test.len = test_len;
1242 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1243 if (!data)
1244 return -ENOMEM;
1245
1246 ops->self_test(dev, &test, data);
1247
1248 ret = -EFAULT;
1249 if (copy_to_user(useraddr, &test, sizeof(test)))
1250 goto out;
1251 useraddr += sizeof(test);
1252 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1253 goto out;
1254 ret = 0;
1255
1256 out:
1257 kfree(data);
1258 return ret;
1259 }
1260
1261 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1262 {
1263 struct ethtool_gstrings gstrings;
1264 u8 *data;
1265 int ret;
1266
1267 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1268 return -EFAULT;
1269
1270 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1271 if (ret < 0)
1272 return ret;
1273
1274 gstrings.len = ret;
1275
1276 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
1277 if (!data)
1278 return -ENOMEM;
1279
1280 __ethtool_get_strings(dev, gstrings.string_set, data);
1281
1282 ret = -EFAULT;
1283 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1284 goto out;
1285 useraddr += sizeof(gstrings);
1286 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1287 goto out;
1288 ret = 0;
1289
1290 out:
1291 kfree(data);
1292 return ret;
1293 }
1294
1295 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1296 {
1297 struct ethtool_value id;
1298 static bool busy;
1299 const struct ethtool_ops *ops = dev->ethtool_ops;
1300 int rc;
1301
1302 if (!ops->set_phys_id)
1303 return -EOPNOTSUPP;
1304
1305 if (busy)
1306 return -EBUSY;
1307
1308 if (copy_from_user(&id, useraddr, sizeof(id)))
1309 return -EFAULT;
1310
1311 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1312 if (rc < 0)
1313 return rc;
1314
1315 /* Drop the RTNL lock while waiting, but prevent reentry or
1316 * removal of the device.
1317 */
1318 busy = true;
1319 dev_hold(dev);
1320 rtnl_unlock();
1321
1322 if (rc == 0) {
1323 /* Driver will handle this itself */
1324 schedule_timeout_interruptible(
1325 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1326 } else {
1327 /* Driver expects to be called at twice the frequency in rc */
1328 int n = rc * 2, i, interval = HZ / n;
1329
1330 /* Count down seconds */
1331 do {
1332 /* Count down iterations per second */
1333 i = n;
1334 do {
1335 rtnl_lock();
1336 rc = ops->set_phys_id(dev,
1337 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1338 rtnl_unlock();
1339 if (rc)
1340 break;
1341 schedule_timeout_interruptible(interval);
1342 } while (!signal_pending(current) && --i != 0);
1343 } while (!signal_pending(current) &&
1344 (id.data == 0 || --id.data != 0));
1345 }
1346
1347 rtnl_lock();
1348 dev_put(dev);
1349 busy = false;
1350
1351 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1352 return rc;
1353 }
1354
1355 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1356 {
1357 struct ethtool_stats stats;
1358 const struct ethtool_ops *ops = dev->ethtool_ops;
1359 u64 *data;
1360 int ret, n_stats;
1361
1362 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1363 return -EOPNOTSUPP;
1364
1365 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1366 if (n_stats < 0)
1367 return n_stats;
1368 WARN_ON(n_stats == 0);
1369
1370 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1371 return -EFAULT;
1372
1373 stats.n_stats = n_stats;
1374 data = kmalloc(n_stats * sizeof(u64), GFP_USER);
1375 if (!data)
1376 return -ENOMEM;
1377
1378 ops->get_ethtool_stats(dev, &stats, data);
1379
1380 ret = -EFAULT;
1381 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1382 goto out;
1383 useraddr += sizeof(stats);
1384 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
1385 goto out;
1386 ret = 0;
1387
1388 out:
1389 kfree(data);
1390 return ret;
1391 }
1392
1393 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
1394 {
1395 struct ethtool_perm_addr epaddr;
1396
1397 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
1398 return -EFAULT;
1399
1400 if (epaddr.size < dev->addr_len)
1401 return -ETOOSMALL;
1402 epaddr.size = dev->addr_len;
1403
1404 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
1405 return -EFAULT;
1406 useraddr += sizeof(epaddr);
1407 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
1408 return -EFAULT;
1409 return 0;
1410 }
1411
1412 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
1413 u32 cmd, u32 (*actor)(struct net_device *))
1414 {
1415 struct ethtool_value edata = { .cmd = cmd };
1416
1417 if (!actor)
1418 return -EOPNOTSUPP;
1419
1420 edata.data = actor(dev);
1421
1422 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1423 return -EFAULT;
1424 return 0;
1425 }
1426
1427 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
1428 void (*actor)(struct net_device *, u32))
1429 {
1430 struct ethtool_value edata;
1431
1432 if (!actor)
1433 return -EOPNOTSUPP;
1434
1435 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1436 return -EFAULT;
1437
1438 actor(dev, edata.data);
1439 return 0;
1440 }
1441
1442 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
1443 int (*actor)(struct net_device *, u32))
1444 {
1445 struct ethtool_value edata;
1446
1447 if (!actor)
1448 return -EOPNOTSUPP;
1449
1450 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1451 return -EFAULT;
1452
1453 return actor(dev, edata.data);
1454 }
1455
1456 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
1457 char __user *useraddr)
1458 {
1459 struct ethtool_flash efl;
1460
1461 if (copy_from_user(&efl, useraddr, sizeof(efl)))
1462 return -EFAULT;
1463
1464 if (!dev->ethtool_ops->flash_device)
1465 return -EOPNOTSUPP;
1466
1467 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
1468
1469 return dev->ethtool_ops->flash_device(dev, &efl);
1470 }
1471
1472 static int ethtool_set_dump(struct net_device *dev,
1473 void __user *useraddr)
1474 {
1475 struct ethtool_dump dump;
1476
1477 if (!dev->ethtool_ops->set_dump)
1478 return -EOPNOTSUPP;
1479
1480 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1481 return -EFAULT;
1482
1483 return dev->ethtool_ops->set_dump(dev, &dump);
1484 }
1485
1486 static int ethtool_get_dump_flag(struct net_device *dev,
1487 void __user *useraddr)
1488 {
1489 int ret;
1490 struct ethtool_dump dump;
1491 const struct ethtool_ops *ops = dev->ethtool_ops;
1492
1493 if (!ops->get_dump_flag)
1494 return -EOPNOTSUPP;
1495
1496 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1497 return -EFAULT;
1498
1499 ret = ops->get_dump_flag(dev, &dump);
1500 if (ret)
1501 return ret;
1502
1503 if (copy_to_user(useraddr, &dump, sizeof(dump)))
1504 return -EFAULT;
1505 return 0;
1506 }
1507
1508 static int ethtool_get_dump_data(struct net_device *dev,
1509 void __user *useraddr)
1510 {
1511 int ret;
1512 __u32 len;
1513 struct ethtool_dump dump, tmp;
1514 const struct ethtool_ops *ops = dev->ethtool_ops;
1515 void *data = NULL;
1516
1517 if (!ops->get_dump_data || !ops->get_dump_flag)
1518 return -EOPNOTSUPP;
1519
1520 if (copy_from_user(&dump, useraddr, sizeof(dump)))
1521 return -EFAULT;
1522
1523 memset(&tmp, 0, sizeof(tmp));
1524 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
1525 ret = ops->get_dump_flag(dev, &tmp);
1526 if (ret)
1527 return ret;
1528
1529 len = min(tmp.len, dump.len);
1530 if (!len)
1531 return -EFAULT;
1532
1533 /* Don't ever let the driver think there's more space available
1534 * than it requested with .get_dump_flag().
1535 */
1536 dump.len = len;
1537
1538 /* Always allocate enough space to hold the whole thing so that the
1539 * driver does not need to check the length and bother with partial
1540 * dumping.
1541 */
1542 data = vzalloc(tmp.len);
1543 if (!data)
1544 return -ENOMEM;
1545 ret = ops->get_dump_data(dev, &dump, data);
1546 if (ret)
1547 goto out;
1548
1549 /* There are two sane possibilities:
1550 * 1. The driver's .get_dump_data() does not touch dump.len.
1551 * 2. Or it may set dump.len to how much it really writes, which
1552 * should be tmp.len (or len if it can do a partial dump).
1553 * In any case respond to userspace with the actual length of data
1554 * it's receiving.
1555 */
1556 WARN_ON(dump.len != len && dump.len != tmp.len);
1557 dump.len = len;
1558
1559 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
1560 ret = -EFAULT;
1561 goto out;
1562 }
1563 useraddr += offsetof(struct ethtool_dump, data);
1564 if (copy_to_user(useraddr, data, len))
1565 ret = -EFAULT;
1566 out:
1567 vfree(data);
1568 return ret;
1569 }
1570
1571 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
1572 {
1573 int err = 0;
1574 struct ethtool_ts_info info;
1575 const struct ethtool_ops *ops = dev->ethtool_ops;
1576 struct phy_device *phydev = dev->phydev;
1577
1578 memset(&info, 0, sizeof(info));
1579 info.cmd = ETHTOOL_GET_TS_INFO;
1580
1581 if (phydev && phydev->drv && phydev->drv->ts_info) {
1582 err = phydev->drv->ts_info(phydev, &info);
1583 } else if (ops->get_ts_info) {
1584 err = ops->get_ts_info(dev, &info);
1585 } else {
1586 info.so_timestamping =
1587 SOF_TIMESTAMPING_RX_SOFTWARE |
1588 SOF_TIMESTAMPING_SOFTWARE;
1589 info.phc_index = -1;
1590 }
1591
1592 if (err)
1593 return err;
1594
1595 if (copy_to_user(useraddr, &info, sizeof(info)))
1596 err = -EFAULT;
1597
1598 return err;
1599 }
1600
1601 static int __ethtool_get_module_info(struct net_device *dev,
1602 struct ethtool_modinfo *modinfo)
1603 {
1604 const struct ethtool_ops *ops = dev->ethtool_ops;
1605 struct phy_device *phydev = dev->phydev;
1606
1607 if (phydev && phydev->drv && phydev->drv->module_info)
1608 return phydev->drv->module_info(phydev, modinfo);
1609
1610 if (ops->get_module_info)
1611 return ops->get_module_info(dev, modinfo);
1612
1613 return -EOPNOTSUPP;
1614 }
1615
1616 static int ethtool_get_module_info(struct net_device *dev,
1617 void __user *useraddr)
1618 {
1619 int ret;
1620 struct ethtool_modinfo modinfo;
1621
1622 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
1623 return -EFAULT;
1624
1625 ret = __ethtool_get_module_info(dev, &modinfo);
1626 if (ret)
1627 return ret;
1628
1629 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
1630 return -EFAULT;
1631
1632 return 0;
1633 }
1634
1635 static int __ethtool_get_module_eeprom(struct net_device *dev,
1636 struct ethtool_eeprom *ee, u8 *data)
1637 {
1638 const struct ethtool_ops *ops = dev->ethtool_ops;
1639 struct phy_device *phydev = dev->phydev;
1640
1641 if (phydev && phydev->drv && phydev->drv->module_eeprom)
1642 return phydev->drv->module_eeprom(phydev, ee, data);
1643
1644 if (ops->get_module_eeprom)
1645 return ops->get_module_eeprom(dev, ee, data);
1646
1647 return -EOPNOTSUPP;
1648 }
1649
1650 static int ethtool_get_module_eeprom(struct net_device *dev,
1651 void __user *useraddr)
1652 {
1653 int ret;
1654 struct ethtool_modinfo modinfo;
1655
1656 ret = __ethtool_get_module_info(dev, &modinfo);
1657 if (ret)
1658 return ret;
1659
1660 return ethtool_get_any_eeprom(dev, useraddr,
1661 __ethtool_get_module_eeprom,
1662 modinfo.eeprom_len);
1663 }
1664
1665 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
1666 {
1667 switch (tuna->id) {
1668 case ETHTOOL_RX_COPYBREAK:
1669 case ETHTOOL_TX_COPYBREAK:
1670 if (tuna->len != sizeof(u32) ||
1671 tuna->type_id != ETHTOOL_TUNABLE_U32)
1672 return -EINVAL;
1673 break;
1674 default:
1675 return -EINVAL;
1676 }
1677
1678 return 0;
1679 }
1680
1681 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
1682 {
1683 int ret;
1684 struct ethtool_tunable tuna;
1685 const struct ethtool_ops *ops = dev->ethtool_ops;
1686 void *data;
1687
1688 if (!ops->get_tunable)
1689 return -EOPNOTSUPP;
1690 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
1691 return -EFAULT;
1692 ret = ethtool_tunable_valid(&tuna);
1693 if (ret)
1694 return ret;
1695 data = kmalloc(tuna.len, GFP_USER);
1696 if (!data)
1697 return -ENOMEM;
1698 ret = ops->get_tunable(dev, &tuna, data);
1699 if (ret)
1700 goto out;
1701 useraddr += sizeof(tuna);
1702 ret = -EFAULT;
1703 if (copy_to_user(useraddr, data, tuna.len))
1704 goto out;
1705 ret = 0;
1706
1707 out:
1708 kfree(data);
1709 return ret;
1710 }
1711
1712 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
1713 {
1714 int ret;
1715 struct ethtool_tunable tuna;
1716 const struct ethtool_ops *ops = dev->ethtool_ops;
1717 void *data;
1718
1719 if (!ops->set_tunable)
1720 return -EOPNOTSUPP;
1721 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
1722 return -EFAULT;
1723 ret = ethtool_tunable_valid(&tuna);
1724 if (ret)
1725 return ret;
1726 data = kmalloc(tuna.len, GFP_USER);
1727 if (!data)
1728 return -ENOMEM;
1729 useraddr += sizeof(tuna);
1730 ret = -EFAULT;
1731 if (copy_from_user(data, useraddr, tuna.len))
1732 goto out;
1733 ret = ops->set_tunable(dev, &tuna, data);
1734
1735 out:
1736 kfree(data);
1737 return ret;
1738 }
1739
1740 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
1741
1742 int dev_ethtool(struct net *net, struct ifreq *ifr)
1743 {
1744 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1745 void __user *useraddr = ifr->ifr_data;
1746 u32 ethcmd;
1747 int rc;
1748 netdev_features_t old_features;
1749
1750 if (!dev || !netif_device_present(dev))
1751 return -ENODEV;
1752
1753 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1754 return -EFAULT;
1755
1756 /* Allow some commands to be done by anyone */
1757 switch (ethcmd) {
1758 case ETHTOOL_GSET:
1759 case ETHTOOL_GDRVINFO:
1760 case ETHTOOL_GMSGLVL:
1761 case ETHTOOL_GLINK:
1762 case ETHTOOL_GCOALESCE:
1763 case ETHTOOL_GRINGPARAM:
1764 case ETHTOOL_GPAUSEPARAM:
1765 case ETHTOOL_GRXCSUM:
1766 case ETHTOOL_GTXCSUM:
1767 case ETHTOOL_GSG:
1768 case ETHTOOL_GSSET_INFO:
1769 case ETHTOOL_GSTRINGS:
1770 case ETHTOOL_GSTATS:
1771 case ETHTOOL_GTSO:
1772 case ETHTOOL_GPERMADDR:
1773 case ETHTOOL_GUFO:
1774 case ETHTOOL_GGSO:
1775 case ETHTOOL_GGRO:
1776 case ETHTOOL_GFLAGS:
1777 case ETHTOOL_GPFLAGS:
1778 case ETHTOOL_GRXFH:
1779 case ETHTOOL_GRXRINGS:
1780 case ETHTOOL_GRXCLSRLCNT:
1781 case ETHTOOL_GRXCLSRULE:
1782 case ETHTOOL_GRXCLSRLALL:
1783 case ETHTOOL_GRXFHINDIR:
1784 case ETHTOOL_GRSSH:
1785 case ETHTOOL_GFEATURES:
1786 case ETHTOOL_GCHANNELS:
1787 case ETHTOOL_GET_TS_INFO:
1788 case ETHTOOL_GEEE:
1789 case ETHTOOL_GTUNABLE:
1790 break;
1791 default:
1792 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
1793 return -EPERM;
1794 }
1795
1796 if (dev->ethtool_ops->begin) {
1797 rc = dev->ethtool_ops->begin(dev);
1798 if (rc < 0)
1799 return rc;
1800 }
1801 old_features = dev->features;
1802
1803 switch (ethcmd) {
1804 case ETHTOOL_GSET:
1805 rc = ethtool_get_settings(dev, useraddr);
1806 break;
1807 case ETHTOOL_SSET:
1808 rc = ethtool_set_settings(dev, useraddr);
1809 break;
1810 case ETHTOOL_GDRVINFO:
1811 rc = ethtool_get_drvinfo(dev, useraddr);
1812 break;
1813 case ETHTOOL_GREGS:
1814 rc = ethtool_get_regs(dev, useraddr);
1815 break;
1816 case ETHTOOL_GWOL:
1817 rc = ethtool_get_wol(dev, useraddr);
1818 break;
1819 case ETHTOOL_SWOL:
1820 rc = ethtool_set_wol(dev, useraddr);
1821 break;
1822 case ETHTOOL_GMSGLVL:
1823 rc = ethtool_get_value(dev, useraddr, ethcmd,
1824 dev->ethtool_ops->get_msglevel);
1825 break;
1826 case ETHTOOL_SMSGLVL:
1827 rc = ethtool_set_value_void(dev, useraddr,
1828 dev->ethtool_ops->set_msglevel);
1829 break;
1830 case ETHTOOL_GEEE:
1831 rc = ethtool_get_eee(dev, useraddr);
1832 break;
1833 case ETHTOOL_SEEE:
1834 rc = ethtool_set_eee(dev, useraddr);
1835 break;
1836 case ETHTOOL_NWAY_RST:
1837 rc = ethtool_nway_reset(dev);
1838 break;
1839 case ETHTOOL_GLINK:
1840 rc = ethtool_get_link(dev, useraddr);
1841 break;
1842 case ETHTOOL_GEEPROM:
1843 rc = ethtool_get_eeprom(dev, useraddr);
1844 break;
1845 case ETHTOOL_SEEPROM:
1846 rc = ethtool_set_eeprom(dev, useraddr);
1847 break;
1848 case ETHTOOL_GCOALESCE:
1849 rc = ethtool_get_coalesce(dev, useraddr);
1850 break;
1851 case ETHTOOL_SCOALESCE:
1852 rc = ethtool_set_coalesce(dev, useraddr);
1853 break;
1854 case ETHTOOL_GRINGPARAM:
1855 rc = ethtool_get_ringparam(dev, useraddr);
1856 break;
1857 case ETHTOOL_SRINGPARAM:
1858 rc = ethtool_set_ringparam(dev, useraddr);
1859 break;
1860 case ETHTOOL_GPAUSEPARAM:
1861 rc = ethtool_get_pauseparam(dev, useraddr);
1862 break;
1863 case ETHTOOL_SPAUSEPARAM:
1864 rc = ethtool_set_pauseparam(dev, useraddr);
1865 break;
1866 case ETHTOOL_TEST:
1867 rc = ethtool_self_test(dev, useraddr);
1868 break;
1869 case ETHTOOL_GSTRINGS:
1870 rc = ethtool_get_strings(dev, useraddr);
1871 break;
1872 case ETHTOOL_PHYS_ID:
1873 rc = ethtool_phys_id(dev, useraddr);
1874 break;
1875 case ETHTOOL_GSTATS:
1876 rc = ethtool_get_stats(dev, useraddr);
1877 break;
1878 case ETHTOOL_GPERMADDR:
1879 rc = ethtool_get_perm_addr(dev, useraddr);
1880 break;
1881 case ETHTOOL_GFLAGS:
1882 rc = ethtool_get_value(dev, useraddr, ethcmd,
1883 __ethtool_get_flags);
1884 break;
1885 case ETHTOOL_SFLAGS:
1886 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
1887 break;
1888 case ETHTOOL_GPFLAGS:
1889 rc = ethtool_get_value(dev, useraddr, ethcmd,
1890 dev->ethtool_ops->get_priv_flags);
1891 break;
1892 case ETHTOOL_SPFLAGS:
1893 rc = ethtool_set_value(dev, useraddr,
1894 dev->ethtool_ops->set_priv_flags);
1895 break;
1896 case ETHTOOL_GRXFH:
1897 case ETHTOOL_GRXRINGS:
1898 case ETHTOOL_GRXCLSRLCNT:
1899 case ETHTOOL_GRXCLSRULE:
1900 case ETHTOOL_GRXCLSRLALL:
1901 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
1902 break;
1903 case ETHTOOL_SRXFH:
1904 case ETHTOOL_SRXCLSRLDEL:
1905 case ETHTOOL_SRXCLSRLINS:
1906 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
1907 break;
1908 case ETHTOOL_FLASHDEV:
1909 rc = ethtool_flash_device(dev, useraddr);
1910 break;
1911 case ETHTOOL_RESET:
1912 rc = ethtool_reset(dev, useraddr);
1913 break;
1914 case ETHTOOL_GSSET_INFO:
1915 rc = ethtool_get_sset_info(dev, useraddr);
1916 break;
1917 case ETHTOOL_GRXFHINDIR:
1918 rc = ethtool_get_rxfh_indir(dev, useraddr);
1919 break;
1920 case ETHTOOL_SRXFHINDIR:
1921 rc = ethtool_set_rxfh_indir(dev, useraddr);
1922 break;
1923 case ETHTOOL_GRSSH:
1924 rc = ethtool_get_rxfh(dev, useraddr);
1925 break;
1926 case ETHTOOL_SRSSH:
1927 rc = ethtool_set_rxfh(dev, useraddr);
1928 break;
1929 case ETHTOOL_GFEATURES:
1930 rc = ethtool_get_features(dev, useraddr);
1931 break;
1932 case ETHTOOL_SFEATURES:
1933 rc = ethtool_set_features(dev, useraddr);
1934 break;
1935 case ETHTOOL_GTXCSUM:
1936 case ETHTOOL_GRXCSUM:
1937 case ETHTOOL_GSG:
1938 case ETHTOOL_GTSO:
1939 case ETHTOOL_GUFO:
1940 case ETHTOOL_GGSO:
1941 case ETHTOOL_GGRO:
1942 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
1943 break;
1944 case ETHTOOL_STXCSUM:
1945 case ETHTOOL_SRXCSUM:
1946 case ETHTOOL_SSG:
1947 case ETHTOOL_STSO:
1948 case ETHTOOL_SUFO:
1949 case ETHTOOL_SGSO:
1950 case ETHTOOL_SGRO:
1951 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
1952 break;
1953 case ETHTOOL_GCHANNELS:
1954 rc = ethtool_get_channels(dev, useraddr);
1955 break;
1956 case ETHTOOL_SCHANNELS:
1957 rc = ethtool_set_channels(dev, useraddr);
1958 break;
1959 case ETHTOOL_SET_DUMP:
1960 rc = ethtool_set_dump(dev, useraddr);
1961 break;
1962 case ETHTOOL_GET_DUMP_FLAG:
1963 rc = ethtool_get_dump_flag(dev, useraddr);
1964 break;
1965 case ETHTOOL_GET_DUMP_DATA:
1966 rc = ethtool_get_dump_data(dev, useraddr);
1967 break;
1968 case ETHTOOL_GET_TS_INFO:
1969 rc = ethtool_get_ts_info(dev, useraddr);
1970 break;
1971 case ETHTOOL_GMODULEINFO:
1972 rc = ethtool_get_module_info(dev, useraddr);
1973 break;
1974 case ETHTOOL_GMODULEEEPROM:
1975 rc = ethtool_get_module_eeprom(dev, useraddr);
1976 break;
1977 case ETHTOOL_GTUNABLE:
1978 rc = ethtool_get_tunable(dev, useraddr);
1979 break;
1980 case ETHTOOL_STUNABLE:
1981 rc = ethtool_set_tunable(dev, useraddr);
1982 break;
1983 default:
1984 rc = -EOPNOTSUPP;
1985 }
1986
1987 if (dev->ethtool_ops->complete)
1988 dev->ethtool_ops->complete(dev);
1989
1990 if (old_features != dev->features)
1991 netdev_features_change(dev);
1992
1993 return rc;
1994 }
Linux kernel - Deliverables
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