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libnvdimm, region: quiet region probe
[linux/fpc-iii.git] / net / core / ethtool.c
blob494e6a5d73061acd87534d636ee393555b0ed40d
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/signal.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_GRO_HW_BIT] = "rx-gro-hw",
77 [NETIF_F_LRO_BIT] = "rx-lro",
78
79 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
82 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
83 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
85 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
86 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
87 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
88 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
89 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
91 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
92 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
93 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
94
95 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
96 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
97 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
98 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
99 [NETIF_F_RXHASH_BIT] = "rx-hashing",
100 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
101 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
102 [NETIF_F_LOOPBACK_BIT] = "loopback",
103 [NETIF_F_RXFCS_BIT] = "rx-fcs",
104 [NETIF_F_RXALL_BIT] = "rx-all",
105 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
106 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
107 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
108 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
109 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
110 };
111
112 static const char
113 rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
114 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
115 [ETH_RSS_HASH_XOR_BIT] = "xor",
116 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
117 };
118
119 static const char
120 tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
121 [ETHTOOL_ID_UNSPEC] = "Unspec",
122 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
123 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
124 };
125
126 static const char
127 phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
128 [ETHTOOL_ID_UNSPEC] = "Unspec",
129 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
130 };
131
132 static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
133 {
134 struct ethtool_gfeatures cmd = {
135 .cmd = ETHTOOL_GFEATURES,
136 .size = ETHTOOL_DEV_FEATURE_WORDS,
137 };
138 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
139 u32 __user *sizeaddr;
140 u32 copy_size;
141 int i;
142
143 /* in case feature bits run out again */
144 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
145
146 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
147 features[i].available = (u32)(dev->hw_features >> (32 * i));
148 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
149 features[i].active = (u32)(dev->features >> (32 * i));
150 features[i].never_changed =
151 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
152 }
153
154 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
155 if (get_user(copy_size, sizeaddr))
156 return -EFAULT;
157
158 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
159 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
160
161 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
162 return -EFAULT;
163 useraddr += sizeof(cmd);
164 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
165 return -EFAULT;
166
167 return 0;
168 }
169
170 static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
171 {
172 struct ethtool_sfeatures cmd;
173 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
174 netdev_features_t wanted = 0, valid = 0;
175 int i, ret = 0;
176
177 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
178 return -EFAULT;
179 useraddr += sizeof(cmd);
180
181 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
182 return -EINVAL;
183
184 if (copy_from_user(features, useraddr, sizeof(features)))
185 return -EFAULT;
186
187 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
188 valid |= (netdev_features_t)features[i].valid << (32 * i);
189 wanted |= (netdev_features_t)features[i].requested << (32 * i);
190 }
191
192 if (valid & ~NETIF_F_ETHTOOL_BITS)
193 return -EINVAL;
194
195 if (valid & ~dev->hw_features) {
196 valid &= dev->hw_features;
197 ret |= ETHTOOL_F_UNSUPPORTED;
198 }
199
200 dev->wanted_features &= ~valid;
201 dev->wanted_features |= wanted & valid;
202 __netdev_update_features(dev);
203
204 if ((dev->wanted_features ^ dev->features) & valid)
205 ret |= ETHTOOL_F_WISH;
206
207 return ret;
208 }
209
210 static int phy_get_sset_count(struct phy_device *phydev)
211 {
212 int ret;
213
214 if (phydev->drv->get_sset_count &&
215 phydev->drv->get_strings &&
216 phydev->drv->get_stats) {
217 mutex_lock(&phydev->lock);
218 ret = phydev->drv->get_sset_count(phydev);
219 mutex_unlock(&phydev->lock);
220
221 return ret;
222 }
223
224 return -EOPNOTSUPP;
225 }
226
227 static int __ethtool_get_sset_count(struct net_device *dev, int sset)
228 {
229 const struct ethtool_ops *ops = dev->ethtool_ops;
230
231 if (sset == ETH_SS_FEATURES)
232 return ARRAY_SIZE(netdev_features_strings);
233
234 if (sset == ETH_SS_RSS_HASH_FUNCS)
235 return ARRAY_SIZE(rss_hash_func_strings);
236
237 if (sset == ETH_SS_TUNABLES)
238 return ARRAY_SIZE(tunable_strings);
239
240 if (sset == ETH_SS_PHY_TUNABLES)
241 return ARRAY_SIZE(phy_tunable_strings);
242
243 if (sset == ETH_SS_PHY_STATS) {
244 if (dev->phydev)
245 return phy_get_sset_count(dev->phydev);
246 else
247 return -EOPNOTSUPP;
248 }
249
250 if (ops->get_sset_count && ops->get_strings)
251 return ops->get_sset_count(dev, sset);
252 else
253 return -EOPNOTSUPP;
254 }
255
256 static void __ethtool_get_strings(struct net_device *dev,
257 u32 stringset, u8 *data)
258 {
259 const struct ethtool_ops *ops = dev->ethtool_ops;
260
261 if (stringset == ETH_SS_FEATURES)
262 memcpy(data, netdev_features_strings,
263 sizeof(netdev_features_strings));
264 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
265 memcpy(data, rss_hash_func_strings,
266 sizeof(rss_hash_func_strings));
267 else if (stringset == ETH_SS_TUNABLES)
268 memcpy(data, tunable_strings, sizeof(tunable_strings));
269 else if (stringset == ETH_SS_PHY_TUNABLES)
270 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
271 else if (stringset == ETH_SS_PHY_STATS) {
272 struct phy_device *phydev = dev->phydev;
273
274 if (phydev) {
275 mutex_lock(&phydev->lock);
276 phydev->drv->get_strings(phydev, data);
277 mutex_unlock(&phydev->lock);
278 } else {
279 return;
280 }
281 } else
282 /* ops->get_strings is valid because checked earlier */
283 ops->get_strings(dev, stringset, data);
284 }
285
286 static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
287 {
288 /* feature masks of legacy discrete ethtool ops */
289
290 switch (eth_cmd) {
291 case ETHTOOL_GTXCSUM:
292 case ETHTOOL_STXCSUM:
293 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
294 case ETHTOOL_GRXCSUM:
295 case ETHTOOL_SRXCSUM:
296 return NETIF_F_RXCSUM;
297 case ETHTOOL_GSG:
298 case ETHTOOL_SSG:
299 return NETIF_F_SG;
300 case ETHTOOL_GTSO:
301 case ETHTOOL_STSO:
302 return NETIF_F_ALL_TSO;
303 case ETHTOOL_GGSO:
304 case ETHTOOL_SGSO:
305 return NETIF_F_GSO;
306 case ETHTOOL_GGRO:
307 case ETHTOOL_SGRO:
308 return NETIF_F_GRO;
309 default:
310 BUG();
311 }
312 }
313
314 static int ethtool_get_one_feature(struct net_device *dev,
315 char __user *useraddr, u32 ethcmd)
316 {
317 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
318 struct ethtool_value edata = {
319 .cmd = ethcmd,
320 .data = !!(dev->features & mask),
321 };
322
323 if (copy_to_user(useraddr, &edata, sizeof(edata)))
324 return -EFAULT;
325 return 0;
326 }
327
328 static int ethtool_set_one_feature(struct net_device *dev,
329 void __user *useraddr, u32 ethcmd)
330 {
331 struct ethtool_value edata;
332 netdev_features_t mask;
333
334 if (copy_from_user(&edata, useraddr, sizeof(edata)))
335 return -EFAULT;
336
337 mask = ethtool_get_feature_mask(ethcmd);
338 mask &= dev->hw_features;
339 if (!mask)
340 return -EOPNOTSUPP;
341
342 if (edata.data)
343 dev->wanted_features |= mask;
344 else
345 dev->wanted_features &= ~mask;
346
347 __netdev_update_features(dev);
348
349 return 0;
350 }
351
352 #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
353 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
354 #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
355 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
356 NETIF_F_RXHASH)
357
358 static u32 __ethtool_get_flags(struct net_device *dev)
359 {
360 u32 flags = 0;
361
362 if (dev->features & NETIF_F_LRO)
363 flags |= ETH_FLAG_LRO;
364 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
365 flags |= ETH_FLAG_RXVLAN;
366 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
367 flags |= ETH_FLAG_TXVLAN;
368 if (dev->features & NETIF_F_NTUPLE)
369 flags |= ETH_FLAG_NTUPLE;
370 if (dev->features & NETIF_F_RXHASH)
371 flags |= ETH_FLAG_RXHASH;
372
373 return flags;
374 }
375
376 static int __ethtool_set_flags(struct net_device *dev, u32 data)
377 {
378 netdev_features_t features = 0, changed;
379
380 if (data & ~ETH_ALL_FLAGS)
381 return -EINVAL;
382
383 if (data & ETH_FLAG_LRO)
384 features |= NETIF_F_LRO;
385 if (data & ETH_FLAG_RXVLAN)
386 features |= NETIF_F_HW_VLAN_CTAG_RX;
387 if (data & ETH_FLAG_TXVLAN)
388 features |= NETIF_F_HW_VLAN_CTAG_TX;
389 if (data & ETH_FLAG_NTUPLE)
390 features |= NETIF_F_NTUPLE;
391 if (data & ETH_FLAG_RXHASH)
392 features |= NETIF_F_RXHASH;
393
394 /* allow changing only bits set in hw_features */
395 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
396 if (changed & ~dev->hw_features)
397 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
398
399 dev->wanted_features =
400 (dev->wanted_features & ~changed) | (features & changed);
401
402 __netdev_update_features(dev);
403
404 return 0;
405 }
406
407 /* Given two link masks, AND them together and save the result in dst. */
408 void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
409 struct ethtool_link_ksettings *src)
410 {
411 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
412 unsigned int idx = 0;
413
414 for (; idx < size; idx++) {
415 dst->link_modes.supported[idx] &=
416 src->link_modes.supported[idx];
417 dst->link_modes.advertising[idx] &=
418 src->link_modes.advertising[idx];
419 }
420 }
421 EXPORT_SYMBOL(ethtool_intersect_link_masks);
422
423 void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
424 u32 legacy_u32)
425 {
426 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
427 dst[0] = legacy_u32;
428 }
429 EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
430
431 /* return false if src had higher bits set. lower bits always updated. */
432 bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
433 const unsigned long *src)
434 {
435 bool retval = true;
436
437 /* TODO: following test will soon always be true */
438 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
439 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
440
441 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
442 bitmap_fill(ext, 32);
443 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
444 if (bitmap_intersects(ext, src,
445 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
446 /* src mask goes beyond bit 31 */
447 retval = false;
448 }
449 }
450 *legacy_u32 = src[0];
451 return retval;
452 }
453 EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
454
455 /* return false if legacy contained non-0 deprecated fields
456 * maxtxpkt/maxrxpkt. rest of ksettings always updated
457 */
458 static bool
459 convert_legacy_settings_to_link_ksettings(
460 struct ethtool_link_ksettings *link_ksettings,
461 const struct ethtool_cmd *legacy_settings)
462 {
463 bool retval = true;
464
465 memset(link_ksettings, 0, sizeof(*link_ksettings));
466
467 /* This is used to tell users that driver is still using these
468 * deprecated legacy fields, and they should not use
469 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
470 */
471 if (legacy_settings->maxtxpkt ||
472 legacy_settings->maxrxpkt)
473 retval = false;
474
475 ethtool_convert_legacy_u32_to_link_mode(
476 link_ksettings->link_modes.supported,
477 legacy_settings->supported);
478 ethtool_convert_legacy_u32_to_link_mode(
479 link_ksettings->link_modes.advertising,
480 legacy_settings->advertising);
481 ethtool_convert_legacy_u32_to_link_mode(
482 link_ksettings->link_modes.lp_advertising,
483 legacy_settings->lp_advertising);
484 link_ksettings->base.speed
485 = ethtool_cmd_speed(legacy_settings);
486 link_ksettings->base.duplex
487 = legacy_settings->duplex;
488 link_ksettings->base.port
489 = legacy_settings->port;
490 link_ksettings->base.phy_address
491 = legacy_settings->phy_address;
492 link_ksettings->base.autoneg
493 = legacy_settings->autoneg;
494 link_ksettings->base.mdio_support
495 = legacy_settings->mdio_support;
496 link_ksettings->base.eth_tp_mdix
497 = legacy_settings->eth_tp_mdix;
498 link_ksettings->base.eth_tp_mdix_ctrl
499 = legacy_settings->eth_tp_mdix_ctrl;
500 return retval;
501 }
502
503 /* return false if ksettings link modes had higher bits
504 * set. legacy_settings always updated (best effort)
505 */
506 static bool
507 convert_link_ksettings_to_legacy_settings(
508 struct ethtool_cmd *legacy_settings,
509 const struct ethtool_link_ksettings *link_ksettings)
510 {
511 bool retval = true;
512
513 memset(legacy_settings, 0, sizeof(*legacy_settings));
514 /* this also clears the deprecated fields in legacy structure:
515 * __u8 transceiver;
516 * __u32 maxtxpkt;
517 * __u32 maxrxpkt;
518 */
519
520 retval &= ethtool_convert_link_mode_to_legacy_u32(
521 &legacy_settings->supported,
522 link_ksettings->link_modes.supported);
523 retval &= ethtool_convert_link_mode_to_legacy_u32(
524 &legacy_settings->advertising,
525 link_ksettings->link_modes.advertising);
526 retval &= ethtool_convert_link_mode_to_legacy_u32(
527 &legacy_settings->lp_advertising,
528 link_ksettings->link_modes.lp_advertising);
529 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
530 legacy_settings->duplex
531 = link_ksettings->base.duplex;
532 legacy_settings->port
533 = link_ksettings->base.port;
534 legacy_settings->phy_address
535 = link_ksettings->base.phy_address;
536 legacy_settings->autoneg
537 = link_ksettings->base.autoneg;
538 legacy_settings->mdio_support
539 = link_ksettings->base.mdio_support;
540 legacy_settings->eth_tp_mdix
541 = link_ksettings->base.eth_tp_mdix;
542 legacy_settings->eth_tp_mdix_ctrl
543 = link_ksettings->base.eth_tp_mdix_ctrl;
544 legacy_settings->transceiver
545 = link_ksettings->base.transceiver;
546 return retval;
547 }
548
549 /* number of 32-bit words to store the user's link mode bitmaps */
550 #define __ETHTOOL_LINK_MODE_MASK_NU32 \
551 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
552
553 /* layout of the struct passed from/to userland */
554 struct ethtool_link_usettings {
555 struct ethtool_link_settings base;
556 struct {
557 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
558 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
559 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
560 } link_modes;
561 };
562
563 /* Internal kernel helper to query a device ethtool_link_settings.
564 *
565 * Backward compatibility note: for compatibility with legacy drivers
566 * that implement only the ethtool_cmd API, this has to work with both
567 * drivers implementing get_link_ksettings API and drivers
568 * implementing get_settings API. When drivers implement get_settings
569 * and report ethtool_cmd deprecated fields
570 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
571 * because the resulting struct ethtool_link_settings does not report them.
572 */
573 int __ethtool_get_link_ksettings(struct net_device *dev,
574 struct ethtool_link_ksettings *link_ksettings)
575 {
576 int err;
577 struct ethtool_cmd cmd;
578
579 ASSERT_RTNL();
580
581 if (dev->ethtool_ops->get_link_ksettings) {
582 memset(link_ksettings, 0, sizeof(*link_ksettings));
583 return dev->ethtool_ops->get_link_ksettings(dev,
584 link_ksettings);
585 }
586
587 /* driver doesn't support %ethtool_link_ksettings API. revert to
588 * legacy %ethtool_cmd API, unless it's not supported either.
589 * TODO: remove when ethtool_ops::get_settings disappears internally
590 */
591 if (!dev->ethtool_ops->get_settings)
592 return -EOPNOTSUPP;
593
594 memset(&cmd, 0, sizeof(cmd));
595 cmd.cmd = ETHTOOL_GSET;
596 err = dev->ethtool_ops->get_settings(dev, &cmd);
597 if (err < 0)
598 return err;
599
600 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
601 */
602 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
603 return err;
604 }
605 EXPORT_SYMBOL(__ethtool_get_link_ksettings);
606
607 /* convert ethtool_link_usettings in user space to a kernel internal
608 * ethtool_link_ksettings. return 0 on success, errno on error.
609 */
610 static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
611 const void __user *from)
612 {
613 struct ethtool_link_usettings link_usettings;
614
615 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
616 return -EFAULT;
617
618 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
619 bitmap_from_arr32(to->link_modes.supported,
620 link_usettings.link_modes.supported,
621 __ETHTOOL_LINK_MODE_MASK_NBITS);
622 bitmap_from_arr32(to->link_modes.advertising,
623 link_usettings.link_modes.advertising,
624 __ETHTOOL_LINK_MODE_MASK_NBITS);
625 bitmap_from_arr32(to->link_modes.lp_advertising,
626 link_usettings.link_modes.lp_advertising,
627 __ETHTOOL_LINK_MODE_MASK_NBITS);
628
629 return 0;
630 }
631
632 /* convert a kernel internal ethtool_link_ksettings to
633 * ethtool_link_usettings in user space. return 0 on success, errno on
634 * error.
635 */
636 static int
637 store_link_ksettings_for_user(void __user *to,
638 const struct ethtool_link_ksettings *from)
639 {
640 struct ethtool_link_usettings link_usettings;
641
642 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
643 bitmap_to_arr32(link_usettings.link_modes.supported,
644 from->link_modes.supported,
645 __ETHTOOL_LINK_MODE_MASK_NBITS);
646 bitmap_to_arr32(link_usettings.link_modes.advertising,
647 from->link_modes.advertising,
648 __ETHTOOL_LINK_MODE_MASK_NBITS);
649 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
650 from->link_modes.lp_advertising,
651 __ETHTOOL_LINK_MODE_MASK_NBITS);
652
653 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
654 return -EFAULT;
655
656 return 0;
657 }
658
659 /* Query device for its ethtool_link_settings.
660 *
661 * Backward compatibility note: this function must fail when driver
662 * does not implement ethtool::get_link_ksettings, even if legacy
663 * ethtool_ops::get_settings is implemented. This tells new versions
664 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
665 * this driver, so that they can correctly access the ethtool_cmd
666 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
667 * implements ethtool_ops::get_settings anymore.
668 */
669 static int ethtool_get_link_ksettings(struct net_device *dev,
670 void __user *useraddr)
671 {
672 int err = 0;
673 struct ethtool_link_ksettings link_ksettings;
674
675 ASSERT_RTNL();
676
677 if (!dev->ethtool_ops->get_link_ksettings)
678 return -EOPNOTSUPP;
679
680 /* handle bitmap nbits handshake */
681 if (copy_from_user(&link_ksettings.base, useraddr,
682 sizeof(link_ksettings.base)))
683 return -EFAULT;
684
685 if (__ETHTOOL_LINK_MODE_MASK_NU32
686 != link_ksettings.base.link_mode_masks_nwords) {
687 /* wrong link mode nbits requested */
688 memset(&link_ksettings, 0, sizeof(link_ksettings));
689 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
690 /* send back number of words required as negative val */
691 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
692 "need too many bits for link modes!");
693 link_ksettings.base.link_mode_masks_nwords
694 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
695
696 /* copy the base fields back to user, not the link
697 * mode bitmaps
698 */
699 if (copy_to_user(useraddr, &link_ksettings.base,
700 sizeof(link_ksettings.base)))
701 return -EFAULT;
702
703 return 0;
704 }
705
706 /* handshake successful: user/kernel agree on
707 * link_mode_masks_nwords
708 */
709
710 memset(&link_ksettings, 0, sizeof(link_ksettings));
711 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
712 if (err < 0)
713 return err;
714
715 /* make sure we tell the right values to user */
716 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
717 link_ksettings.base.link_mode_masks_nwords
718 = __ETHTOOL_LINK_MODE_MASK_NU32;
719
720 return store_link_ksettings_for_user(useraddr, &link_ksettings);
721 }
722
723 /* Update device ethtool_link_settings.
724 *
725 * Backward compatibility note: this function must fail when driver
726 * does not implement ethtool::set_link_ksettings, even if legacy
727 * ethtool_ops::set_settings is implemented. This tells new versions
728 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
729 * this driver, so that they can correctly update the ethtool_cmd
730 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
731 * implements ethtool_ops::get_settings anymore.
732 */
733 static int ethtool_set_link_ksettings(struct net_device *dev,
734 void __user *useraddr)
735 {
736 int err;
737 struct ethtool_link_ksettings link_ksettings;
738
739 ASSERT_RTNL();
740
741 if (!dev->ethtool_ops->set_link_ksettings)
742 return -EOPNOTSUPP;
743
744 /* make sure nbits field has expected value */
745 if (copy_from_user(&link_ksettings.base, useraddr,
746 sizeof(link_ksettings.base)))
747 return -EFAULT;
748
749 if (__ETHTOOL_LINK_MODE_MASK_NU32
750 != link_ksettings.base.link_mode_masks_nwords)
751 return -EINVAL;
752
753 /* copy the whole structure, now that we know it has expected
754 * format
755 */
756 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
757 if (err)
758 return err;
759
760 /* re-check nwords field, just in case */
761 if (__ETHTOOL_LINK_MODE_MASK_NU32
762 != link_ksettings.base.link_mode_masks_nwords)
763 return -EINVAL;
764
765 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
766 }
767
768 /* Query device for its ethtool_cmd settings.
769 *
770 * Backward compatibility note: for compatibility with legacy ethtool,
771 * this has to work with both drivers implementing get_link_ksettings
772 * API and drivers implementing get_settings API. When drivers
773 * implement get_link_ksettings and report higher link mode bits, a
774 * kernel warning is logged once (with name of 1st driver/device) to
775 * recommend user to upgrade ethtool, but the command is successful
776 * (only the lower link mode bits reported back to user).
777 */
778 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
779 {
780 struct ethtool_cmd cmd;
781
782 ASSERT_RTNL();
783
784 if (dev->ethtool_ops->get_link_ksettings) {
785 /* First, use link_ksettings API if it is supported */
786 int err;
787 struct ethtool_link_ksettings link_ksettings;
788
789 memset(&link_ksettings, 0, sizeof(link_ksettings));
790 err = dev->ethtool_ops->get_link_ksettings(dev,
791 &link_ksettings);
792 if (err < 0)
793 return err;
794 convert_link_ksettings_to_legacy_settings(&cmd,
795 &link_ksettings);
796
797 /* send a sensible cmd tag back to user */
798 cmd.cmd = ETHTOOL_GSET;
799 } else {
800 /* driver doesn't support %ethtool_link_ksettings
801 * API. revert to legacy %ethtool_cmd API, unless it's
802 * not supported either.
803 */
804 int err;
805
806 if (!dev->ethtool_ops->get_settings)
807 return -EOPNOTSUPP;
808
809 memset(&cmd, 0, sizeof(cmd));
810 cmd.cmd = ETHTOOL_GSET;
811 err = dev->ethtool_ops->get_settings(dev, &cmd);
812 if (err < 0)
813 return err;
814 }
815
816 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
817 return -EFAULT;
818
819 return 0;
820 }
821
822 /* Update device link settings with given ethtool_cmd.
823 *
824 * Backward compatibility note: for compatibility with legacy ethtool,
825 * this has to work with both drivers implementing set_link_ksettings
826 * API and drivers implementing set_settings API. When drivers
827 * implement set_link_ksettings and user's request updates deprecated
828 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
829 * warning is logged once (with name of 1st driver/device) to
830 * recommend user to upgrade ethtool, and the request is rejected.
831 */
832 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
833 {
834 struct ethtool_cmd cmd;
835
836 ASSERT_RTNL();
837
838 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
839 return -EFAULT;
840
841 /* first, try new %ethtool_link_ksettings API. */
842 if (dev->ethtool_ops->set_link_ksettings) {
843 struct ethtool_link_ksettings link_ksettings;
844
845 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
846 &cmd))
847 return -EINVAL;
848
849 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
850 link_ksettings.base.link_mode_masks_nwords
851 = __ETHTOOL_LINK_MODE_MASK_NU32;
852 return dev->ethtool_ops->set_link_ksettings(dev,
853 &link_ksettings);
854 }
855
856 /* legacy %ethtool_cmd API */
857
858 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
859 * disappears internally
860 */
861
862 if (!dev->ethtool_ops->set_settings)
863 return -EOPNOTSUPP;
864
865 return dev->ethtool_ops->set_settings(dev, &cmd);
866 }
867
868 static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
869 void __user *useraddr)
870 {
871 struct ethtool_drvinfo info;
872 const struct ethtool_ops *ops = dev->ethtool_ops;
873
874 memset(&info, 0, sizeof(info));
875 info.cmd = ETHTOOL_GDRVINFO;
876 if (ops->get_drvinfo) {
877 ops->get_drvinfo(dev, &info);
878 } else if (dev->dev.parent && dev->dev.parent->driver) {
879 strlcpy(info.bus_info, dev_name(dev->dev.parent),
880 sizeof(info.bus_info));
881 strlcpy(info.driver, dev->dev.parent->driver->name,
882 sizeof(info.driver));
883 } else {
884 return -EOPNOTSUPP;
885 }
886
887 /*
888 * this method of obtaining string set info is deprecated;
889 * Use ETHTOOL_GSSET_INFO instead.
890 */
891 if (ops->get_sset_count) {
892 int rc;
893
894 rc = ops->get_sset_count(dev, ETH_SS_TEST);
895 if (rc >= 0)
896 info.testinfo_len = rc;
897 rc = ops->get_sset_count(dev, ETH_SS_STATS);
898 if (rc >= 0)
899 info.n_stats = rc;
900 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
901 if (rc >= 0)
902 info.n_priv_flags = rc;
903 }
904 if (ops->get_regs_len)
905 info.regdump_len = ops->get_regs_len(dev);
906 if (ops->get_eeprom_len)
907 info.eedump_len = ops->get_eeprom_len(dev);
908
909 if (copy_to_user(useraddr, &info, sizeof(info)))
910 return -EFAULT;
911 return 0;
912 }
913
914 static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
915 void __user *useraddr)
916 {
917 struct ethtool_sset_info info;
918 u64 sset_mask;
919 int i, idx = 0, n_bits = 0, ret, rc;
920 u32 *info_buf = NULL;
921
922 if (copy_from_user(&info, useraddr, sizeof(info)))
923 return -EFAULT;
924
925 /* store copy of mask, because we zero struct later on */
926 sset_mask = info.sset_mask;
927 if (!sset_mask)
928 return 0;
929
930 /* calculate size of return buffer */
931 n_bits = hweight64(sset_mask);
932
933 memset(&info, 0, sizeof(info));
934 info.cmd = ETHTOOL_GSSET_INFO;
935
936 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
937 if (!info_buf)
938 return -ENOMEM;
939
940 /*
941 * fill return buffer based on input bitmask and successful
942 * get_sset_count return
943 */
944 for (i = 0; i < 64; i++) {
945 if (!(sset_mask & (1ULL << i)))
946 continue;
947
948 rc = __ethtool_get_sset_count(dev, i);
949 if (rc >= 0) {
950 info.sset_mask |= (1ULL << i);
951 info_buf[idx++] = rc;
952 }
953 }
954
955 ret = -EFAULT;
956 if (copy_to_user(useraddr, &info, sizeof(info)))
957 goto out;
958
959 useraddr += offsetof(struct ethtool_sset_info, data);
960 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
961 goto out;
962
963 ret = 0;
964
965 out:
966 kfree(info_buf);
967 return ret;
968 }
969
970 static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
971 u32 cmd, void __user *useraddr)
972 {
973 struct ethtool_rxnfc info;
974 size_t info_size = sizeof(info);
975 int rc;
976
977 if (!dev->ethtool_ops->set_rxnfc)
978 return -EOPNOTSUPP;
979
980 /* struct ethtool_rxnfc was originally defined for
981 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
982 * members. User-space might still be using that
983 * definition. */
984 if (cmd == ETHTOOL_SRXFH)
985 info_size = (offsetof(struct ethtool_rxnfc, data) +
986 sizeof(info.data));
987
988 if (copy_from_user(&info, useraddr, info_size))
989 return -EFAULT;
990
991 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
992 if (rc)
993 return rc;
994
995 if (cmd == ETHTOOL_SRXCLSRLINS &&
996 copy_to_user(useraddr, &info, info_size))
997 return -EFAULT;
998
999 return 0;
1000 }
1001
1002 static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
1003 u32 cmd, void __user *useraddr)
1004 {
1005 struct ethtool_rxnfc info;
1006 size_t info_size = sizeof(info);
1007 const struct ethtool_ops *ops = dev->ethtool_ops;
1008 int ret;
1009 void *rule_buf = NULL;
1010
1011 if (!ops->get_rxnfc)
1012 return -EOPNOTSUPP;
1013
1014 /* struct ethtool_rxnfc was originally defined for
1015 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1016 * members. User-space might still be using that
1017 * definition. */
1018 if (cmd == ETHTOOL_GRXFH)
1019 info_size = (offsetof(struct ethtool_rxnfc, data) +
1020 sizeof(info.data));
1021
1022 if (copy_from_user(&info, useraddr, info_size))
1023 return -EFAULT;
1024
1025 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1026 if (info.rule_cnt > 0) {
1027 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
1028 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
1029 GFP_USER);
1030 if (!rule_buf)
1031 return -ENOMEM;
1032 }
1033 }
1034
1035 ret = ops->get_rxnfc(dev, &info, rule_buf);
1036 if (ret < 0)
1037 goto err_out;
1038
1039 ret = -EFAULT;
1040 if (copy_to_user(useraddr, &info, info_size))
1041 goto err_out;
1042
1043 if (rule_buf) {
1044 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1045 if (copy_to_user(useraddr, rule_buf,
1046 info.rule_cnt * sizeof(u32)))
1047 goto err_out;
1048 }
1049 ret = 0;
1050
1051 err_out:
1052 kfree(rule_buf);
1053
1054 return ret;
1055 }
1056
1057 static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1058 struct ethtool_rxnfc *rx_rings,
1059 u32 size)
1060 {
1061 int i;
1062
1063 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
1064 return -EFAULT;
1065
1066 /* Validate ring indices */
1067 for (i = 0; i < size; i++)
1068 if (indir[i] >= rx_rings->data)
1069 return -EINVAL;
1070
1071 return 0;
1072 }
1073
1074 u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
1075
1076 void netdev_rss_key_fill(void *buffer, size_t len)
1077 {
1078 BUG_ON(len > sizeof(netdev_rss_key));
1079 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1080 memcpy(buffer, netdev_rss_key, len);
1081 }
1082 EXPORT_SYMBOL(netdev_rss_key_fill);
1083
1084 static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1085 {
1086 u32 dev_size, current_max = 0;
1087 u32 *indir;
1088 int ret;
1089
1090 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1091 !dev->ethtool_ops->get_rxfh)
1092 return -EOPNOTSUPP;
1093 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1094 if (dev_size == 0)
1095 return -EOPNOTSUPP;
1096
1097 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1098 if (!indir)
1099 return -ENOMEM;
1100
1101 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1102 if (ret)
1103 goto out;
1104
1105 while (dev_size--)
1106 current_max = max(current_max, indir[dev_size]);
1107
1108 *max = current_max;
1109
1110 out:
1111 kfree(indir);
1112 return ret;
1113 }
1114
1115 static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1116 void __user *useraddr)
1117 {
1118 u32 user_size, dev_size;
1119 u32 *indir;
1120 int ret;
1121
1122 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1123 !dev->ethtool_ops->get_rxfh)
1124 return -EOPNOTSUPP;
1125 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1126 if (dev_size == 0)
1127 return -EOPNOTSUPP;
1128
1129 if (copy_from_user(&user_size,
1130 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1131 sizeof(user_size)))
1132 return -EFAULT;
1133
1134 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1135 &dev_size, sizeof(dev_size)))
1136 return -EFAULT;
1137
1138 /* If the user buffer size is 0, this is just a query for the
1139 * device table size. Otherwise, if it's smaller than the
1140 * device table size it's an error.
1141 */
1142 if (user_size < dev_size)
1143 return user_size == 0 ? 0 : -EINVAL;
1144
1145 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1146 if (!indir)
1147 return -ENOMEM;
1148
1149 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1150 if (ret)
1151 goto out;
1152
1153 if (copy_to_user(useraddr +
1154 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1155 indir, dev_size * sizeof(indir[0])))
1156 ret = -EFAULT;
1157
1158 out:
1159 kfree(indir);
1160 return ret;
1161 }
1162
1163 static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1164 void __user *useraddr)
1165 {
1166 struct ethtool_rxnfc rx_rings;
1167 u32 user_size, dev_size, i;
1168 u32 *indir;
1169 const struct ethtool_ops *ops = dev->ethtool_ops;
1170 int ret;
1171 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
1172
1173 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
1174 !ops->get_rxnfc)
1175 return -EOPNOTSUPP;
1176
1177 dev_size = ops->get_rxfh_indir_size(dev);
1178 if (dev_size == 0)
1179 return -EOPNOTSUPP;
1180
1181 if (copy_from_user(&user_size,
1182 useraddr + offsetof(struct ethtool_rxfh_indir, size),
1183 sizeof(user_size)))
1184 return -EFAULT;
1185
1186 if (user_size != 0 && user_size != dev_size)
1187 return -EINVAL;
1188
1189 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1190 if (!indir)
1191 return -ENOMEM;
1192
1193 rx_rings.cmd = ETHTOOL_GRXRINGS;
1194 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1195 if (ret)
1196 goto out;
1197
1198 if (user_size == 0) {
1199 for (i = 0; i < dev_size; i++)
1200 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1201 } else {
1202 ret = ethtool_copy_validate_indir(indir,
1203 useraddr + ringidx_offset,
1204 &rx_rings,
1205 dev_size);
1206 if (ret)
1207 goto out;
1208 }
1209
1210 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
1211 if (ret)
1212 goto out;
1213
1214 /* indicate whether rxfh was set to default */
1215 if (user_size == 0)
1216 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1217 else
1218 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1219
1220 out:
1221 kfree(indir);
1222 return ret;
1223 }
1224
1225 static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1226 void __user *useraddr)
1227 {
1228 int ret;
1229 const struct ethtool_ops *ops = dev->ethtool_ops;
1230 u32 user_indir_size, user_key_size;
1231 u32 dev_indir_size = 0, dev_key_size = 0;
1232 struct ethtool_rxfh rxfh;
1233 u32 total_size;
1234 u32 indir_bytes;
1235 u32 *indir = NULL;
1236 u8 dev_hfunc = 0;
1237 u8 *hkey = NULL;
1238 u8 *rss_config;
1239
1240 if (!ops->get_rxfh)
1241 return -EOPNOTSUPP;
1242
1243 if (ops->get_rxfh_indir_size)
1244 dev_indir_size = ops->get_rxfh_indir_size(dev);
1245 if (ops->get_rxfh_key_size)
1246 dev_key_size = ops->get_rxfh_key_size(dev);
1247
1248 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1249 return -EFAULT;
1250 user_indir_size = rxfh.indir_size;
1251 user_key_size = rxfh.key_size;
1252
1253 /* Check that reserved fields are 0 for now */
1254 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1255 rxfh.rsvd8[2] || rxfh.rsvd32)
1256 return -EINVAL;
1257
1258 rxfh.indir_size = dev_indir_size;
1259 rxfh.key_size = dev_key_size;
1260 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
1261 return -EFAULT;
1262
1263 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1264 (user_key_size && (user_key_size != dev_key_size)))
1265 return -EINVAL;
1266
1267 indir_bytes = user_indir_size * sizeof(indir[0]);
1268 total_size = indir_bytes + user_key_size;
1269 rss_config = kzalloc(total_size, GFP_USER);
1270 if (!rss_config)
1271 return -ENOMEM;
1272
1273 if (user_indir_size)
1274 indir = (u32 *)rss_config;
1275
1276 if (user_key_size)
1277 hkey = rss_config + indir_bytes;
1278
1279 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1280 if (ret)
1281 goto out;
1282
1283 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1284 &dev_hfunc, sizeof(rxfh.hfunc))) {
1285 ret = -EFAULT;
1286 } else if (copy_to_user(useraddr +
1287 offsetof(struct ethtool_rxfh, rss_config[0]),
1288 rss_config, total_size)) {
1289 ret = -EFAULT;
1290 }
1291 out:
1292 kfree(rss_config);
1293
1294 return ret;
1295 }
1296
1297 static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1298 void __user *useraddr)
1299 {
1300 int ret;
1301 const struct ethtool_ops *ops = dev->ethtool_ops;
1302 struct ethtool_rxnfc rx_rings;
1303 struct ethtool_rxfh rxfh;
1304 u32 dev_indir_size = 0, dev_key_size = 0, i;
1305 u32 *indir = NULL, indir_bytes = 0;
1306 u8 *hkey = NULL;
1307 u8 *rss_config;
1308 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1309
1310 if (!ops->get_rxnfc || !ops->set_rxfh)
1311 return -EOPNOTSUPP;
1312
1313 if (ops->get_rxfh_indir_size)
1314 dev_indir_size = ops->get_rxfh_indir_size(dev);
1315 if (ops->get_rxfh_key_size)
1316 dev_key_size = ops->get_rxfh_key_size(dev);
1317
1318 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
1319 return -EFAULT;
1320
1321 /* Check that reserved fields are 0 for now */
1322 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1323 rxfh.rsvd8[2] || rxfh.rsvd32)
1324 return -EINVAL;
1325
1326 /* If either indir, hash key or function is valid, proceed further.
1327 * Must request at least one change: indir size, hash key or function.
1328 */
1329 if ((rxfh.indir_size &&
1330 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1331 rxfh.indir_size != dev_indir_size) ||
1332 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1333 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
1334 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
1335 return -EINVAL;
1336
1337 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1338 indir_bytes = dev_indir_size * sizeof(indir[0]);
1339
1340 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
1341 if (!rss_config)
1342 return -ENOMEM;
1343
1344 rx_rings.cmd = ETHTOOL_GRXRINGS;
1345 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1346 if (ret)
1347 goto out;
1348
1349 /* rxfh.indir_size == 0 means reset the indir table to default.
1350 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
1351 */
1352 if (rxfh.indir_size &&
1353 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
1354 indir = (u32 *)rss_config;
1355 ret = ethtool_copy_validate_indir(indir,
1356 useraddr + rss_cfg_offset,
1357 &rx_rings,
1358 rxfh.indir_size);
1359 if (ret)
1360 goto out;
1361 } else if (rxfh.indir_size == 0) {
1362 indir = (u32 *)rss_config;
1363 for (i = 0; i < dev_indir_size; i++)
1364 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1365 }
1366
1367 if (rxfh.key_size) {
1368 hkey = rss_config + indir_bytes;
1369 if (copy_from_user(hkey,
1370 useraddr + rss_cfg_offset + indir_bytes,
1371 rxfh.key_size)) {
1372 ret = -EFAULT;
1373 goto out;
1374 }
1375 }
1376
1377 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
1378 if (ret)
1379 goto out;
1380
1381 /* indicate whether rxfh was set to default */
1382 if (rxfh.indir_size == 0)
1383 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1384 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1385 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1386
1387 out:
1388 kfree(rss_config);
1389 return ret;
1390 }
1391
1392 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1393 {
1394 struct ethtool_regs regs;
1395 const struct ethtool_ops *ops = dev->ethtool_ops;
1396 void *regbuf;
1397 int reglen, ret;
1398
1399 if (!ops->get_regs || !ops->get_regs_len)
1400 return -EOPNOTSUPP;
1401
1402 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1403 return -EFAULT;
1404
1405 reglen = ops->get_regs_len(dev);
1406 if (regs.len > reglen)
1407 regs.len = reglen;
1408
1409 regbuf = NULL;
1410 if (reglen) {
1411 regbuf = vzalloc(reglen);
1412 if (!regbuf)
1413 return -ENOMEM;
1414 }
1415
1416 ops->get_regs(dev, &regs, regbuf);
1417
1418 ret = -EFAULT;
1419 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1420 goto out;
1421 useraddr += offsetof(struct ethtool_regs, data);
1422 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1423 goto out;
1424 ret = 0;
1425
1426 out:
1427 vfree(regbuf);
1428 return ret;
1429 }
1430
1431 static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1432 {
1433 struct ethtool_value reset;
1434 int ret;
1435
1436 if (!dev->ethtool_ops->reset)
1437 return -EOPNOTSUPP;
1438
1439 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1440 return -EFAULT;
1441
1442 ret = dev->ethtool_ops->reset(dev, &reset.data);
1443 if (ret)
1444 return ret;
1445
1446 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1447 return -EFAULT;
1448 return 0;
1449 }
1450
1451 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1452 {
1453 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1454
1455 if (!dev->ethtool_ops->get_wol)
1456 return -EOPNOTSUPP;
1457
1458 dev->ethtool_ops->get_wol(dev, &wol);
1459
1460 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1461 return -EFAULT;
1462 return 0;
1463 }
1464
1465 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1466 {
1467 struct ethtool_wolinfo wol;
1468
1469 if (!dev->ethtool_ops->set_wol)
1470 return -EOPNOTSUPP;
1471
1472 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1473 return -EFAULT;
1474
1475 return dev->ethtool_ops->set_wol(dev, &wol);
1476 }
1477
1478 static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1479 {
1480 struct ethtool_eee edata;
1481 int rc;
1482
1483 if (!dev->ethtool_ops->get_eee)
1484 return -EOPNOTSUPP;
1485
1486 memset(&edata, 0, sizeof(struct ethtool_eee));
1487 edata.cmd = ETHTOOL_GEEE;
1488 rc = dev->ethtool_ops->get_eee(dev, &edata);
1489
1490 if (rc)
1491 return rc;
1492
1493 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1494 return -EFAULT;
1495
1496 return 0;
1497 }
1498
1499 static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1500 {
1501 struct ethtool_eee edata;
1502
1503 if (!dev->ethtool_ops->set_eee)
1504 return -EOPNOTSUPP;
1505
1506 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1507 return -EFAULT;
1508
1509 return dev->ethtool_ops->set_eee(dev, &edata);
1510 }
1511
1512 static int ethtool_nway_reset(struct net_device *dev)
1513 {
1514 if (!dev->ethtool_ops->nway_reset)
1515 return -EOPNOTSUPP;
1516
1517 return dev->ethtool_ops->nway_reset(dev);
1518 }
1519
1520 static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1521 {
1522 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1523
1524 if (!dev->ethtool_ops->get_link)
1525 return -EOPNOTSUPP;
1526
1527 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1528
1529 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1530 return -EFAULT;
1531 return 0;
1532 }
1533
1534 static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1535 int (*getter)(struct net_device *,
1536 struct ethtool_eeprom *, u8 *),
1537 u32 total_len)
1538 {
1539 struct ethtool_eeprom eeprom;
1540 void __user *userbuf = useraddr + sizeof(eeprom);
1541 u32 bytes_remaining;
1542 u8 *data;
1543 int ret = 0;
1544
1545 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1546 return -EFAULT;
1547
1548 /* Check for wrap and zero */
1549 if (eeprom.offset + eeprom.len <= eeprom.offset)
1550 return -EINVAL;
1551
1552 /* Check for exceeding total eeprom len */
1553 if (eeprom.offset + eeprom.len > total_len)
1554 return -EINVAL;
1555
1556 data = kmalloc(PAGE_SIZE, GFP_USER);
1557 if (!data)
1558 return -ENOMEM;
1559
1560 bytes_remaining = eeprom.len;
1561 while (bytes_remaining > 0) {
1562 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1563
1564 ret = getter(dev, &eeprom, data);
1565 if (ret)
1566 break;
1567 if (copy_to_user(userbuf, data, eeprom.len)) {
1568 ret = -EFAULT;
1569 break;
1570 }
1571 userbuf += eeprom.len;
1572 eeprom.offset += eeprom.len;
1573 bytes_remaining -= eeprom.len;
1574 }
1575
1576 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1577 eeprom.offset -= eeprom.len;
1578 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1579 ret = -EFAULT;
1580
1581 kfree(data);
1582 return ret;
1583 }
1584
1585 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1586 {
1587 const struct ethtool_ops *ops = dev->ethtool_ops;
1588
1589 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1590 !ops->get_eeprom_len(dev))
1591 return -EOPNOTSUPP;
1592
1593 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1594 ops->get_eeprom_len(dev));
1595 }
1596
1597 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1598 {
1599 struct ethtool_eeprom eeprom;
1600 const struct ethtool_ops *ops = dev->ethtool_ops;
1601 void __user *userbuf = useraddr + sizeof(eeprom);
1602 u32 bytes_remaining;
1603 u8 *data;
1604 int ret = 0;
1605
1606 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1607 !ops->get_eeprom_len(dev))
1608 return -EOPNOTSUPP;
1609
1610 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1611 return -EFAULT;
1612
1613 /* Check for wrap and zero */
1614 if (eeprom.offset + eeprom.len <= eeprom.offset)
1615 return -EINVAL;
1616
1617 /* Check for exceeding total eeprom len */
1618 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1619 return -EINVAL;
1620
1621 data = kmalloc(PAGE_SIZE, GFP_USER);
1622 if (!data)
1623 return -ENOMEM;
1624
1625 bytes_remaining = eeprom.len;
1626 while (bytes_remaining > 0) {
1627 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1628
1629 if (copy_from_user(data, userbuf, eeprom.len)) {
1630 ret = -EFAULT;
1631 break;
1632 }
1633 ret = ops->set_eeprom(dev, &eeprom, data);
1634 if (ret)
1635 break;
1636 userbuf += eeprom.len;
1637 eeprom.offset += eeprom.len;
1638 bytes_remaining -= eeprom.len;
1639 }
1640
1641 kfree(data);
1642 return ret;
1643 }
1644
1645 static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1646 void __user *useraddr)
1647 {
1648 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1649
1650 if (!dev->ethtool_ops->get_coalesce)
1651 return -EOPNOTSUPP;
1652
1653 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1654
1655 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1656 return -EFAULT;
1657 return 0;
1658 }
1659
1660 static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1661 void __user *useraddr)
1662 {
1663 struct ethtool_coalesce coalesce;
1664
1665 if (!dev->ethtool_ops->set_coalesce)
1666 return -EOPNOTSUPP;
1667
1668 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1669 return -EFAULT;
1670
1671 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1672 }
1673
1674 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1675 {
1676 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1677
1678 if (!dev->ethtool_ops->get_ringparam)
1679 return -EOPNOTSUPP;
1680
1681 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1682
1683 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1684 return -EFAULT;
1685 return 0;
1686 }
1687
1688 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1689 {
1690 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1691
1692 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1693 return -EOPNOTSUPP;
1694
1695 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1696 return -EFAULT;
1697
1698 dev->ethtool_ops->get_ringparam(dev, &max);
1699
1700 /* ensure new ring parameters are within the maximums */
1701 if (ringparam.rx_pending > max.rx_max_pending ||
1702 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1703 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1704 ringparam.tx_pending > max.tx_max_pending)
1705 return -EINVAL;
1706
1707 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1708 }
1709
1710 static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1711 void __user *useraddr)
1712 {
1713 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1714
1715 if (!dev->ethtool_ops->get_channels)
1716 return -EOPNOTSUPP;
1717
1718 dev->ethtool_ops->get_channels(dev, &channels);
1719
1720 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1721 return -EFAULT;
1722 return 0;
1723 }
1724
1725 static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1726 void __user *useraddr)
1727 {
1728 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
1729 u32 max_rx_in_use = 0;
1730
1731 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
1732 return -EOPNOTSUPP;
1733
1734 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1735 return -EFAULT;
1736
1737 dev->ethtool_ops->get_channels(dev, &max);
1738
1739 /* ensure new counts are within the maximums */
1740 if ((channels.rx_count > max.max_rx) ||
1741 (channels.tx_count > max.max_tx) ||
1742 (channels.combined_count > max.max_combined) ||
1743 (channels.other_count > max.max_other))
1744 return -EINVAL;
1745
1746 /* ensure the new Rx count fits within the configured Rx flow
1747 * indirection table settings */
1748 if (netif_is_rxfh_configured(dev) &&
1749 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1750 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1751 return -EINVAL;
1752
1753 return dev->ethtool_ops->set_channels(dev, &channels);
1754 }
1755
1756 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1757 {
1758 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1759
1760 if (!dev->ethtool_ops->get_pauseparam)
1761 return -EOPNOTSUPP;
1762
1763 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1764
1765 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1766 return -EFAULT;
1767 return 0;
1768 }
1769
1770 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1771 {
1772 struct ethtool_pauseparam pauseparam;
1773
1774 if (!dev->ethtool_ops->set_pauseparam)
1775 return -EOPNOTSUPP;
1776
1777 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1778 return -EFAULT;
1779
1780 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1781 }
1782
1783 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1784 {
1785 struct ethtool_test test;
1786 const struct ethtool_ops *ops = dev->ethtool_ops;
1787 u64 *data;
1788 int ret, test_len;
1789
1790 if (!ops->self_test || !ops->get_sset_count)
1791 return -EOPNOTSUPP;
1792
1793 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
1794 if (test_len < 0)
1795 return test_len;
1796 WARN_ON(test_len == 0);
1797
1798 if (copy_from_user(&test, useraddr, sizeof(test)))
1799 return -EFAULT;
1800
1801 test.len = test_len;
1802 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1803 if (!data)
1804 return -ENOMEM;
1805
1806 ops->self_test(dev, &test, data);
1807
1808 ret = -EFAULT;
1809 if (copy_to_user(useraddr, &test, sizeof(test)))
1810 goto out;
1811 useraddr += sizeof(test);
1812 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1813 goto out;
1814 ret = 0;
1815
1816 out:
1817 kfree(data);
1818 return ret;
1819 }
1820
1821 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1822 {
1823 struct ethtool_gstrings gstrings;
1824 u8 *data;
1825 int ret;
1826
1827 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1828 return -EFAULT;
1829
1830 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
1831 if (ret < 0)
1832 return ret;
1833 if (ret > S32_MAX / ETH_GSTRING_LEN)
1834 return -ENOMEM;
1835 WARN_ON_ONCE(!ret);
1836
1837 gstrings.len = ret;
1838 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1839 if (gstrings.len && !data)
1840 return -ENOMEM;
1841
1842 __ethtool_get_strings(dev, gstrings.string_set, data);
1843
1844 ret = -EFAULT;
1845 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1846 goto out;
1847 useraddr += sizeof(gstrings);
1848 if (gstrings.len &&
1849 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1850 goto out;
1851 ret = 0;
1852
1853 out:
1854 vfree(data);
1855 return ret;
1856 }
1857
1858 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1859 {
1860 struct ethtool_value id;
1861 static bool busy;
1862 const struct ethtool_ops *ops = dev->ethtool_ops;
1863 int rc;
1864
1865 if (!ops->set_phys_id)
1866 return -EOPNOTSUPP;
1867
1868 if (busy)
1869 return -EBUSY;
1870
1871 if (copy_from_user(&id, useraddr, sizeof(id)))
1872 return -EFAULT;
1873
1874 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
1875 if (rc < 0)
1876 return rc;
1877
1878 /* Drop the RTNL lock while waiting, but prevent reentry or
1879 * removal of the device.
1880 */
1881 busy = true;
1882 dev_hold(dev);
1883 rtnl_unlock();
1884
1885 if (rc == 0) {
1886 /* Driver will handle this itself */
1887 schedule_timeout_interruptible(
1888 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
1889 } else {
1890 /* Driver expects to be called at twice the frequency in rc */
1891 int n = rc * 2, i, interval = HZ / n;
1892
1893 /* Count down seconds */
1894 do {
1895 /* Count down iterations per second */
1896 i = n;
1897 do {
1898 rtnl_lock();
1899 rc = ops->set_phys_id(dev,
1900 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1901 rtnl_unlock();
1902 if (rc)
1903 break;
1904 schedule_timeout_interruptible(interval);
1905 } while (!signal_pending(current) && --i != 0);
1906 } while (!signal_pending(current) &&
1907 (id.data == 0 || --id.data != 0));
1908 }
1909
1910 rtnl_lock();
1911 dev_put(dev);
1912 busy = false;
1913
1914 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
1915 return rc;
1916 }
1917
1918 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1919 {
1920 struct ethtool_stats stats;
1921 const struct ethtool_ops *ops = dev->ethtool_ops;
1922 u64 *data;
1923 int ret, n_stats;
1924
1925 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1926 return -EOPNOTSUPP;
1927
1928 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
1929 if (n_stats < 0)
1930 return n_stats;
1931 if (n_stats > S32_MAX / sizeof(u64))
1932 return -ENOMEM;
1933 WARN_ON_ONCE(!n_stats);
1934 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1935 return -EFAULT;
1936
1937 stats.n_stats = n_stats;
1938 data = vzalloc(n_stats * sizeof(u64));
1939 if (n_stats && !data)
1940 return -ENOMEM;
1941
1942 ops->get_ethtool_stats(dev, &stats, data);
1943
1944 ret = -EFAULT;
1945 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1946 goto out;
1947 useraddr += sizeof(stats);
1948 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1949 goto out;
1950 ret = 0;
1951
1952 out:
1953 vfree(data);
1954 return ret;
1955 }
1956
1957 static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1958 {
1959 struct ethtool_stats stats;
1960 struct phy_device *phydev = dev->phydev;
1961 u64 *data;
1962 int ret, n_stats;
1963
1964 if (!phydev)
1965 return -EOPNOTSUPP;
1966
1967 n_stats = phy_get_sset_count(phydev);
1968 if (n_stats < 0)
1969 return n_stats;
1970 if (n_stats > S32_MAX / sizeof(u64))
1971 return -ENOMEM;
1972 WARN_ON_ONCE(!n_stats);
1973
1974 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1975 return -EFAULT;
1976
1977 stats.n_stats = n_stats;
1978 data = vzalloc(n_stats * sizeof(u64));
1979 if (n_stats && !data)
1980 return -ENOMEM;
1981
1982 mutex_lock(&phydev->lock);
1983 phydev->drv->get_stats(phydev, &stats, data);
1984 mutex_unlock(&phydev->lock);
1985
1986 ret = -EFAULT;
1987 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1988 goto out;
1989 useraddr += sizeof(stats);
1990 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1991 goto out;
1992 ret = 0;
1993
1994 out:
1995 vfree(data);
1996 return ret;
1997 }
1998
1999 static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
2000 {
2001 struct ethtool_perm_addr epaddr;
2002
2003 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
2004 return -EFAULT;
2005
2006 if (epaddr.size < dev->addr_len)
2007 return -ETOOSMALL;
2008 epaddr.size = dev->addr_len;
2009
2010 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
2011 return -EFAULT;
2012 useraddr += sizeof(epaddr);
2013 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2014 return -EFAULT;
2015 return 0;
2016 }
2017
2018 static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2019 u32 cmd, u32 (*actor)(struct net_device *))
2020 {
2021 struct ethtool_value edata = { .cmd = cmd };
2022
2023 if (!actor)
2024 return -EOPNOTSUPP;
2025
2026 edata.data = actor(dev);
2027
2028 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2029 return -EFAULT;
2030 return 0;
2031 }
2032
2033 static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2034 void (*actor)(struct net_device *, u32))
2035 {
2036 struct ethtool_value edata;
2037
2038 if (!actor)
2039 return -EOPNOTSUPP;
2040
2041 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2042 return -EFAULT;
2043
2044 actor(dev, edata.data);
2045 return 0;
2046 }
2047
2048 static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2049 int (*actor)(struct net_device *, u32))
2050 {
2051 struct ethtool_value edata;
2052
2053 if (!actor)
2054 return -EOPNOTSUPP;
2055
2056 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2057 return -EFAULT;
2058
2059 return actor(dev, edata.data);
2060 }
2061
2062 static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2063 char __user *useraddr)
2064 {
2065 struct ethtool_flash efl;
2066
2067 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2068 return -EFAULT;
2069
2070 if (!dev->ethtool_ops->flash_device)
2071 return -EOPNOTSUPP;
2072
2073 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2074
2075 return dev->ethtool_ops->flash_device(dev, &efl);
2076 }
2077
2078 static int ethtool_set_dump(struct net_device *dev,
2079 void __user *useraddr)
2080 {
2081 struct ethtool_dump dump;
2082
2083 if (!dev->ethtool_ops->set_dump)
2084 return -EOPNOTSUPP;
2085
2086 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2087 return -EFAULT;
2088
2089 return dev->ethtool_ops->set_dump(dev, &dump);
2090 }
2091
2092 static int ethtool_get_dump_flag(struct net_device *dev,
2093 void __user *useraddr)
2094 {
2095 int ret;
2096 struct ethtool_dump dump;
2097 const struct ethtool_ops *ops = dev->ethtool_ops;
2098
2099 if (!ops->get_dump_flag)
2100 return -EOPNOTSUPP;
2101
2102 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2103 return -EFAULT;
2104
2105 ret = ops->get_dump_flag(dev, &dump);
2106 if (ret)
2107 return ret;
2108
2109 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2110 return -EFAULT;
2111 return 0;
2112 }
2113
2114 static int ethtool_get_dump_data(struct net_device *dev,
2115 void __user *useraddr)
2116 {
2117 int ret;
2118 __u32 len;
2119 struct ethtool_dump dump, tmp;
2120 const struct ethtool_ops *ops = dev->ethtool_ops;
2121 void *data = NULL;
2122
2123 if (!ops->get_dump_data || !ops->get_dump_flag)
2124 return -EOPNOTSUPP;
2125
2126 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2127 return -EFAULT;
2128
2129 memset(&tmp, 0, sizeof(tmp));
2130 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2131 ret = ops->get_dump_flag(dev, &tmp);
2132 if (ret)
2133 return ret;
2134
2135 len = min(tmp.len, dump.len);
2136 if (!len)
2137 return -EFAULT;
2138
2139 /* Don't ever let the driver think there's more space available
2140 * than it requested with .get_dump_flag().
2141 */
2142 dump.len = len;
2143
2144 /* Always allocate enough space to hold the whole thing so that the
2145 * driver does not need to check the length and bother with partial
2146 * dumping.
2147 */
2148 data = vzalloc(tmp.len);
2149 if (!data)
2150 return -ENOMEM;
2151 ret = ops->get_dump_data(dev, &dump, data);
2152 if (ret)
2153 goto out;
2154
2155 /* There are two sane possibilities:
2156 * 1. The driver's .get_dump_data() does not touch dump.len.
2157 * 2. Or it may set dump.len to how much it really writes, which
2158 * should be tmp.len (or len if it can do a partial dump).
2159 * In any case respond to userspace with the actual length of data
2160 * it's receiving.
2161 */
2162 WARN_ON(dump.len != len && dump.len != tmp.len);
2163 dump.len = len;
2164
2165 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2166 ret = -EFAULT;
2167 goto out;
2168 }
2169 useraddr += offsetof(struct ethtool_dump, data);
2170 if (copy_to_user(useraddr, data, len))
2171 ret = -EFAULT;
2172 out:
2173 vfree(data);
2174 return ret;
2175 }
2176
2177 static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2178 {
2179 int err = 0;
2180 struct ethtool_ts_info info;
2181 const struct ethtool_ops *ops = dev->ethtool_ops;
2182 struct phy_device *phydev = dev->phydev;
2183
2184 memset(&info, 0, sizeof(info));
2185 info.cmd = ETHTOOL_GET_TS_INFO;
2186
2187 if (phydev && phydev->drv && phydev->drv->ts_info) {
2188 err = phydev->drv->ts_info(phydev, &info);
2189 } else if (ops->get_ts_info) {
2190 err = ops->get_ts_info(dev, &info);
2191 } else {
2192 info.so_timestamping =
2193 SOF_TIMESTAMPING_RX_SOFTWARE |
2194 SOF_TIMESTAMPING_SOFTWARE;
2195 info.phc_index = -1;
2196 }
2197
2198 if (err)
2199 return err;
2200
2201 if (copy_to_user(useraddr, &info, sizeof(info)))
2202 err = -EFAULT;
2203
2204 return err;
2205 }
2206
2207 static int __ethtool_get_module_info(struct net_device *dev,
2208 struct ethtool_modinfo *modinfo)
2209 {
2210 const struct ethtool_ops *ops = dev->ethtool_ops;
2211 struct phy_device *phydev = dev->phydev;
2212
2213 if (phydev && phydev->drv && phydev->drv->module_info)
2214 return phydev->drv->module_info(phydev, modinfo);
2215
2216 if (ops->get_module_info)
2217 return ops->get_module_info(dev, modinfo);
2218
2219 return -EOPNOTSUPP;
2220 }
2221
2222 static int ethtool_get_module_info(struct net_device *dev,
2223 void __user *useraddr)
2224 {
2225 int ret;
2226 struct ethtool_modinfo modinfo;
2227
2228 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2229 return -EFAULT;
2230
2231 ret = __ethtool_get_module_info(dev, &modinfo);
2232 if (ret)
2233 return ret;
2234
2235 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2236 return -EFAULT;
2237
2238 return 0;
2239 }
2240
2241 static int __ethtool_get_module_eeprom(struct net_device *dev,
2242 struct ethtool_eeprom *ee, u8 *data)
2243 {
2244 const struct ethtool_ops *ops = dev->ethtool_ops;
2245 struct phy_device *phydev = dev->phydev;
2246
2247 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2248 return phydev->drv->module_eeprom(phydev, ee, data);
2249
2250 if (ops->get_module_eeprom)
2251 return ops->get_module_eeprom(dev, ee, data);
2252
2253 return -EOPNOTSUPP;
2254 }
2255
2256 static int ethtool_get_module_eeprom(struct net_device *dev,
2257 void __user *useraddr)
2258 {
2259 int ret;
2260 struct ethtool_modinfo modinfo;
2261
2262 ret = __ethtool_get_module_info(dev, &modinfo);
2263 if (ret)
2264 return ret;
2265
2266 return ethtool_get_any_eeprom(dev, useraddr,
2267 __ethtool_get_module_eeprom,
2268 modinfo.eeprom_len);
2269 }
2270
2271 static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2272 {
2273 switch (tuna->id) {
2274 case ETHTOOL_RX_COPYBREAK:
2275 case ETHTOOL_TX_COPYBREAK:
2276 if (tuna->len != sizeof(u32) ||
2277 tuna->type_id != ETHTOOL_TUNABLE_U32)
2278 return -EINVAL;
2279 break;
2280 default:
2281 return -EINVAL;
2282 }
2283
2284 return 0;
2285 }
2286
2287 static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2288 {
2289 int ret;
2290 struct ethtool_tunable tuna;
2291 const struct ethtool_ops *ops = dev->ethtool_ops;
2292 void *data;
2293
2294 if (!ops->get_tunable)
2295 return -EOPNOTSUPP;
2296 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2297 return -EFAULT;
2298 ret = ethtool_tunable_valid(&tuna);
2299 if (ret)
2300 return ret;
2301 data = kmalloc(tuna.len, GFP_USER);
2302 if (!data)
2303 return -ENOMEM;
2304 ret = ops->get_tunable(dev, &tuna, data);
2305 if (ret)
2306 goto out;
2307 useraddr += sizeof(tuna);
2308 ret = -EFAULT;
2309 if (copy_to_user(useraddr, data, tuna.len))
2310 goto out;
2311 ret = 0;
2312
2313 out:
2314 kfree(data);
2315 return ret;
2316 }
2317
2318 static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2319 {
2320 int ret;
2321 struct ethtool_tunable tuna;
2322 const struct ethtool_ops *ops = dev->ethtool_ops;
2323 void *data;
2324
2325 if (!ops->set_tunable)
2326 return -EOPNOTSUPP;
2327 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2328 return -EFAULT;
2329 ret = ethtool_tunable_valid(&tuna);
2330 if (ret)
2331 return ret;
2332 useraddr += sizeof(tuna);
2333 data = memdup_user(useraddr, tuna.len);
2334 if (IS_ERR(data))
2335 return PTR_ERR(data);
2336 ret = ops->set_tunable(dev, &tuna, data);
2337
2338 kfree(data);
2339 return ret;
2340 }
2341
2342 static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2343 void __user *useraddr,
2344 struct ethtool_per_queue_op *per_queue_opt)
2345 {
2346 u32 bit;
2347 int ret;
2348 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2349
2350 if (!dev->ethtool_ops->get_per_queue_coalesce)
2351 return -EOPNOTSUPP;
2352
2353 useraddr += sizeof(*per_queue_opt);
2354
2355 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2356 MAX_NUM_QUEUE);
2357
2358 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2359 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2360
2361 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2362 if (ret != 0)
2363 return ret;
2364 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2365 return -EFAULT;
2366 useraddr += sizeof(coalesce);
2367 }
2368
2369 return 0;
2370 }
2371
2372 static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2373 void __user *useraddr,
2374 struct ethtool_per_queue_op *per_queue_opt)
2375 {
2376 u32 bit;
2377 int i, ret = 0;
2378 int n_queue;
2379 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2380 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2381
2382 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2383 (!dev->ethtool_ops->get_per_queue_coalesce))
2384 return -EOPNOTSUPP;
2385
2386 useraddr += sizeof(*per_queue_opt);
2387
2388 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
2389 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2390 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2391 if (!backup)
2392 return -ENOMEM;
2393
2394 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2395 struct ethtool_coalesce coalesce;
2396
2397 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2398 if (ret != 0)
2399 goto roll_back;
2400
2401 tmp++;
2402
2403 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2404 ret = -EFAULT;
2405 goto roll_back;
2406 }
2407
2408 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2409 if (ret != 0)
2410 goto roll_back;
2411
2412 useraddr += sizeof(coalesce);
2413 }
2414
2415 roll_back:
2416 if (ret != 0) {
2417 tmp = backup;
2418 for_each_set_bit(i, queue_mask, bit) {
2419 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2420 tmp++;
2421 }
2422 }
2423 kfree(backup);
2424
2425 return ret;
2426 }
2427
2428 static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2429 {
2430 struct ethtool_per_queue_op per_queue_opt;
2431
2432 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2433 return -EFAULT;
2434
2435 switch (per_queue_opt.sub_command) {
2436 case ETHTOOL_GCOALESCE:
2437 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2438 case ETHTOOL_SCOALESCE:
2439 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
2440 default:
2441 return -EOPNOTSUPP;
2442 };
2443 }
2444
2445 static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2446 {
2447 switch (tuna->id) {
2448 case ETHTOOL_PHY_DOWNSHIFT:
2449 if (tuna->len != sizeof(u8) ||
2450 tuna->type_id != ETHTOOL_TUNABLE_U8)
2451 return -EINVAL;
2452 break;
2453 default:
2454 return -EINVAL;
2455 }
2456
2457 return 0;
2458 }
2459
2460 static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2461 {
2462 int ret;
2463 struct ethtool_tunable tuna;
2464 struct phy_device *phydev = dev->phydev;
2465 void *data;
2466
2467 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2468 return -EOPNOTSUPP;
2469
2470 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2471 return -EFAULT;
2472 ret = ethtool_phy_tunable_valid(&tuna);
2473 if (ret)
2474 return ret;
2475 data = kmalloc(tuna.len, GFP_USER);
2476 if (!data)
2477 return -ENOMEM;
2478 mutex_lock(&phydev->lock);
2479 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2480 mutex_unlock(&phydev->lock);
2481 if (ret)
2482 goto out;
2483 useraddr += sizeof(tuna);
2484 ret = -EFAULT;
2485 if (copy_to_user(useraddr, data, tuna.len))
2486 goto out;
2487 ret = 0;
2488
2489 out:
2490 kfree(data);
2491 return ret;
2492 }
2493
2494 static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2495 {
2496 int ret;
2497 struct ethtool_tunable tuna;
2498 struct phy_device *phydev = dev->phydev;
2499 void *data;
2500
2501 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2502 return -EOPNOTSUPP;
2503 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2504 return -EFAULT;
2505 ret = ethtool_phy_tunable_valid(&tuna);
2506 if (ret)
2507 return ret;
2508 useraddr += sizeof(tuna);
2509 data = memdup_user(useraddr, tuna.len);
2510 if (IS_ERR(data))
2511 return PTR_ERR(data);
2512 mutex_lock(&phydev->lock);
2513 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2514 mutex_unlock(&phydev->lock);
2515
2516 kfree(data);
2517 return ret;
2518 }
2519
2520 static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2521 {
2522 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2523
2524 if (!dev->ethtool_ops->get_fecparam)
2525 return -EOPNOTSUPP;
2526
2527 dev->ethtool_ops->get_fecparam(dev, &fecparam);
2528
2529 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2530 return -EFAULT;
2531 return 0;
2532 }
2533
2534 static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2535 {
2536 struct ethtool_fecparam fecparam;
2537
2538 if (!dev->ethtool_ops->set_fecparam)
2539 return -EOPNOTSUPP;
2540
2541 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2542 return -EFAULT;
2543
2544 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2545 }
2546
2547 /* The main entry point in this file. Called from net/core/dev_ioctl.c */
2548
2549 int dev_ethtool(struct net *net, struct ifreq *ifr)
2550 {
2551 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
2552 void __user *useraddr = ifr->ifr_data;
2553 u32 ethcmd, sub_cmd;
2554 int rc;
2555 netdev_features_t old_features;
2556
2557 if (!dev || !netif_device_present(dev))
2558 return -ENODEV;
2559
2560 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
2561 return -EFAULT;
2562
2563 if (ethcmd == ETHTOOL_PERQUEUE) {
2564 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2565 return -EFAULT;
2566 } else {
2567 sub_cmd = ethcmd;
2568 }
2569 /* Allow some commands to be done by anyone */
2570 switch (sub_cmd) {
2571 case ETHTOOL_GSET:
2572 case ETHTOOL_GDRVINFO:
2573 case ETHTOOL_GMSGLVL:
2574 case ETHTOOL_GLINK:
2575 case ETHTOOL_GCOALESCE:
2576 case ETHTOOL_GRINGPARAM:
2577 case ETHTOOL_GPAUSEPARAM:
2578 case ETHTOOL_GRXCSUM:
2579 case ETHTOOL_GTXCSUM:
2580 case ETHTOOL_GSG:
2581 case ETHTOOL_GSSET_INFO:
2582 case ETHTOOL_GSTRINGS:
2583 case ETHTOOL_GSTATS:
2584 case ETHTOOL_GPHYSTATS:
2585 case ETHTOOL_GTSO:
2586 case ETHTOOL_GPERMADDR:
2587 case ETHTOOL_GGSO:
2588 case ETHTOOL_GGRO:
2589 case ETHTOOL_GFLAGS:
2590 case ETHTOOL_GPFLAGS:
2591 case ETHTOOL_GRXFH:
2592 case ETHTOOL_GRXRINGS:
2593 case ETHTOOL_GRXCLSRLCNT:
2594 case ETHTOOL_GRXCLSRULE:
2595 case ETHTOOL_GRXCLSRLALL:
2596 case ETHTOOL_GRXFHINDIR:
2597 case ETHTOOL_GRSSH:
2598 case ETHTOOL_GFEATURES:
2599 case ETHTOOL_GCHANNELS:
2600 case ETHTOOL_GET_TS_INFO:
2601 case ETHTOOL_GEEE:
2602 case ETHTOOL_GTUNABLE:
2603 case ETHTOOL_PHY_GTUNABLE:
2604 case ETHTOOL_GLINKSETTINGS:
2605 case ETHTOOL_GFECPARAM:
2606 break;
2607 default:
2608 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
2609 return -EPERM;
2610 }
2611
2612 if (dev->ethtool_ops->begin) {
2613 rc = dev->ethtool_ops->begin(dev);
2614 if (rc < 0)
2615 return rc;
2616 }
2617 old_features = dev->features;
2618
2619 switch (ethcmd) {
2620 case ETHTOOL_GSET:
2621 rc = ethtool_get_settings(dev, useraddr);
2622 break;
2623 case ETHTOOL_SSET:
2624 rc = ethtool_set_settings(dev, useraddr);
2625 break;
2626 case ETHTOOL_GDRVINFO:
2627 rc = ethtool_get_drvinfo(dev, useraddr);
2628 break;
2629 case ETHTOOL_GREGS:
2630 rc = ethtool_get_regs(dev, useraddr);
2631 break;
2632 case ETHTOOL_GWOL:
2633 rc = ethtool_get_wol(dev, useraddr);
2634 break;
2635 case ETHTOOL_SWOL:
2636 rc = ethtool_set_wol(dev, useraddr);
2637 break;
2638 case ETHTOOL_GMSGLVL:
2639 rc = ethtool_get_value(dev, useraddr, ethcmd,
2640 dev->ethtool_ops->get_msglevel);
2641 break;
2642 case ETHTOOL_SMSGLVL:
2643 rc = ethtool_set_value_void(dev, useraddr,
2644 dev->ethtool_ops->set_msglevel);
2645 break;
2646 case ETHTOOL_GEEE:
2647 rc = ethtool_get_eee(dev, useraddr);
2648 break;
2649 case ETHTOOL_SEEE:
2650 rc = ethtool_set_eee(dev, useraddr);
2651 break;
2652 case ETHTOOL_NWAY_RST:
2653 rc = ethtool_nway_reset(dev);
2654 break;
2655 case ETHTOOL_GLINK:
2656 rc = ethtool_get_link(dev, useraddr);
2657 break;
2658 case ETHTOOL_GEEPROM:
2659 rc = ethtool_get_eeprom(dev, useraddr);
2660 break;
2661 case ETHTOOL_SEEPROM:
2662 rc = ethtool_set_eeprom(dev, useraddr);
2663 break;
2664 case ETHTOOL_GCOALESCE:
2665 rc = ethtool_get_coalesce(dev, useraddr);
2666 break;
2667 case ETHTOOL_SCOALESCE:
2668 rc = ethtool_set_coalesce(dev, useraddr);
2669 break;
2670 case ETHTOOL_GRINGPARAM:
2671 rc = ethtool_get_ringparam(dev, useraddr);
2672 break;
2673 case ETHTOOL_SRINGPARAM:
2674 rc = ethtool_set_ringparam(dev, useraddr);
2675 break;
2676 case ETHTOOL_GPAUSEPARAM:
2677 rc = ethtool_get_pauseparam(dev, useraddr);
2678 break;
2679 case ETHTOOL_SPAUSEPARAM:
2680 rc = ethtool_set_pauseparam(dev, useraddr);
2681 break;
2682 case ETHTOOL_TEST:
2683 rc = ethtool_self_test(dev, useraddr);
2684 break;
2685 case ETHTOOL_GSTRINGS:
2686 rc = ethtool_get_strings(dev, useraddr);
2687 break;
2688 case ETHTOOL_PHYS_ID:
2689 rc = ethtool_phys_id(dev, useraddr);
2690 break;
2691 case ETHTOOL_GSTATS:
2692 rc = ethtool_get_stats(dev, useraddr);
2693 break;
2694 case ETHTOOL_GPERMADDR:
2695 rc = ethtool_get_perm_addr(dev, useraddr);
2696 break;
2697 case ETHTOOL_GFLAGS:
2698 rc = ethtool_get_value(dev, useraddr, ethcmd,
2699 __ethtool_get_flags);
2700 break;
2701 case ETHTOOL_SFLAGS:
2702 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
2703 break;
2704 case ETHTOOL_GPFLAGS:
2705 rc = ethtool_get_value(dev, useraddr, ethcmd,
2706 dev->ethtool_ops->get_priv_flags);
2707 break;
2708 case ETHTOOL_SPFLAGS:
2709 rc = ethtool_set_value(dev, useraddr,
2710 dev->ethtool_ops->set_priv_flags);
2711 break;
2712 case ETHTOOL_GRXFH:
2713 case ETHTOOL_GRXRINGS:
2714 case ETHTOOL_GRXCLSRLCNT:
2715 case ETHTOOL_GRXCLSRULE:
2716 case ETHTOOL_GRXCLSRLALL:
2717 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
2718 break;
2719 case ETHTOOL_SRXFH:
2720 case ETHTOOL_SRXCLSRLDEL:
2721 case ETHTOOL_SRXCLSRLINS:
2722 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
2723 break;
2724 case ETHTOOL_FLASHDEV:
2725 rc = ethtool_flash_device(dev, useraddr);
2726 break;
2727 case ETHTOOL_RESET:
2728 rc = ethtool_reset(dev, useraddr);
2729 break;
2730 case ETHTOOL_GSSET_INFO:
2731 rc = ethtool_get_sset_info(dev, useraddr);
2732 break;
2733 case ETHTOOL_GRXFHINDIR:
2734 rc = ethtool_get_rxfh_indir(dev, useraddr);
2735 break;
2736 case ETHTOOL_SRXFHINDIR:
2737 rc = ethtool_set_rxfh_indir(dev, useraddr);
2738 break;
2739 case ETHTOOL_GRSSH:
2740 rc = ethtool_get_rxfh(dev, useraddr);
2741 break;
2742 case ETHTOOL_SRSSH:
2743 rc = ethtool_set_rxfh(dev, useraddr);
2744 break;
2745 case ETHTOOL_GFEATURES:
2746 rc = ethtool_get_features(dev, useraddr);
2747 break;
2748 case ETHTOOL_SFEATURES:
2749 rc = ethtool_set_features(dev, useraddr);
2750 break;
2751 case ETHTOOL_GTXCSUM:
2752 case ETHTOOL_GRXCSUM:
2753 case ETHTOOL_GSG:
2754 case ETHTOOL_GTSO:
2755 case ETHTOOL_GGSO:
2756 case ETHTOOL_GGRO:
2757 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2758 break;
2759 case ETHTOOL_STXCSUM:
2760 case ETHTOOL_SRXCSUM:
2761 case ETHTOOL_SSG:
2762 case ETHTOOL_STSO:
2763 case ETHTOOL_SGSO:
2764 case ETHTOOL_SGRO:
2765 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2766 break;
2767 case ETHTOOL_GCHANNELS:
2768 rc = ethtool_get_channels(dev, useraddr);
2769 break;
2770 case ETHTOOL_SCHANNELS:
2771 rc = ethtool_set_channels(dev, useraddr);
2772 break;
2773 case ETHTOOL_SET_DUMP:
2774 rc = ethtool_set_dump(dev, useraddr);
2775 break;
2776 case ETHTOOL_GET_DUMP_FLAG:
2777 rc = ethtool_get_dump_flag(dev, useraddr);
2778 break;
2779 case ETHTOOL_GET_DUMP_DATA:
2780 rc = ethtool_get_dump_data(dev, useraddr);
2781 break;
2782 case ETHTOOL_GET_TS_INFO:
2783 rc = ethtool_get_ts_info(dev, useraddr);
2784 break;
2785 case ETHTOOL_GMODULEINFO:
2786 rc = ethtool_get_module_info(dev, useraddr);
2787 break;
2788 case ETHTOOL_GMODULEEEPROM:
2789 rc = ethtool_get_module_eeprom(dev, useraddr);
2790 break;
2791 case ETHTOOL_GTUNABLE:
2792 rc = ethtool_get_tunable(dev, useraddr);
2793 break;
2794 case ETHTOOL_STUNABLE:
2795 rc = ethtool_set_tunable(dev, useraddr);
2796 break;
2797 case ETHTOOL_GPHYSTATS:
2798 rc = ethtool_get_phy_stats(dev, useraddr);
2799 break;
2800 case ETHTOOL_PERQUEUE:
2801 rc = ethtool_set_per_queue(dev, useraddr);
2802 break;
2803 case ETHTOOL_GLINKSETTINGS:
2804 rc = ethtool_get_link_ksettings(dev, useraddr);
2805 break;
2806 case ETHTOOL_SLINKSETTINGS:
2807 rc = ethtool_set_link_ksettings(dev, useraddr);
2808 break;
2809 case ETHTOOL_PHY_GTUNABLE:
2810 rc = get_phy_tunable(dev, useraddr);
2811 break;
2812 case ETHTOOL_PHY_STUNABLE:
2813 rc = set_phy_tunable(dev, useraddr);
2814 break;
2815 case ETHTOOL_GFECPARAM:
2816 rc = ethtool_get_fecparam(dev, useraddr);
2817 break;
2818 case ETHTOOL_SFECPARAM:
2819 rc = ethtool_set_fecparam(dev, useraddr);
2820 break;
2821 default:
2822 rc = -EOPNOTSUPP;
2823 }
2824
2825 if (dev->ethtool_ops->complete)
2826 dev->ethtool_ops->complete(dev);
2827
2828 if (old_features != dev->features)
2829 netdev_features_change(dev);
2830
2831 return rc;
2832 }
Linux with added FPC-III support