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Merge remote-tracking branch 'asoc/topic/pcm512x' into asoc-next
[mirror_ubuntu-focal-kernel.git] / net / core / ethtool.c
CommitLineData
1da177e4
LT		 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
61a44b9c 6 * the information ethtool needs.
1da177e4 7 *
61a44b9c
MW		 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.
1da177e4
LT		 12 */
13
14#include <linux/module.h>
15#include <linux/types.h>
4fc268d2 16#include <linux/capability.h>
1da177e4
LT		 17#include <linux/errno.h>
18#include <linux/ethtool.h>
19#include <linux/netdevice.h>
c8f3a8c3
RC		 20#include <linux/net_tstamp.h>
21#include <linux/phy.h>
d17792eb 22#include <linux/bitops.h>
97f8aefb 23#include <linux/uaccess.h>
73da16c2 24#include <linux/vmalloc.h>
5a0e3ad6 25#include <linux/slab.h>
68f512f2 26#include <linux/rtnetlink.h>
174cd4b1 27#include <linux/sched/signal.h>
960fb622 28#include <linux/net.h>
1da177e4 29
4ec93edb 30/*
1da177e4
LT		 31 * Some useful ethtool_ops methods that're device independent.
32 * If we find that all drivers want to do the same thing here,
33 * we can turn these into dev_() function calls.
34 */
35
36u32 ethtool_op_get_link(struct net_device *dev)
37{
38 return netif_carrier_ok(dev) ? 1 : 0;
39}
97f8aefb 40EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 41
02eacbd0
RC		 42int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
43{
44 info->so_timestamping =
45 SOF_TIMESTAMPING_TX_SOFTWARE |
46 SOF_TIMESTAMPING_RX_SOFTWARE |
47 SOF_TIMESTAMPING_SOFTWARE;
48 info->phc_index = -1;
49 return 0;
50}
51EXPORT_SYMBOL(ethtool_op_get_ts_info);
52
1da177e4
LT		 53/* Handlers for each ethtool command */
54
475414f6 55#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
5455c699 56
9d921549
MM		 57static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
58 [NETIF_F_SG_BIT] = "tx-scatter-gather",
59 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
9d921549
MM		 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",
788dfcac 64 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
9d921549 65
788dfcac
FLVC		 66 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
2d6577f1
DM		 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",
9d921549
MM		 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",
9d921549
MM		 79 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
80 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
cbc53e08 81 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
9d921549
MM		 82 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
83 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
68c33163 84 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
518f213d 85 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
7e13318d
TH		 86 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
87 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
73136267 88 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
518f213d 89 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
802ab55a 90 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
90017acc 91 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
c7ef8f0c 92 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
9d921549
MM		 93
94 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
53692b1d 95 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
9d921549
MM		 96 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
97 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
98 [NETIF_F_RXHASH_BIT] = "rx-hashing",
99 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
100 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
101 [NETIF_F_LOOPBACK_BIT] = "loopback",
36eabda3 102 [NETIF_F_RXFCS_BIT] = "rx-fcs",
5e0c03c8 103 [NETIF_F_RXALL_BIT] = "rx-all",
a6cc0cfa 104 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
1c78c64e 105 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
c7ef8f0c
SK		 106 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
107 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
d764a122 108 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
9d921549
MM		 109};
110
892311f6
EP		 111static const char
112rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
113 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
114 [ETH_RSS_HASH_XOR_BIT] = "xor",
abb521e3 115 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
892311f6
EP		 116};
117
a4244b0c
HHZ		 118static const char
119tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
120 [ETHTOOL_ID_UNSPEC] = "Unspec",
121 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
122 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
123};
124
968ad9da
RL		 125static const char
126phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
127 [ETHTOOL_ID_UNSPEC] = "Unspec",
65feddd5 128 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
968ad9da
RL		 129};
130
5455c699
MM		 131static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
132{
133 struct ethtool_gfeatures cmd = {
134 .cmd = ETHTOOL_GFEATURES,
135 .size = ETHTOOL_DEV_FEATURE_WORDS,
136 };
475414f6 137 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 138 u32 __user *sizeaddr;
139 u32 copy_size;
475414f6
MM		 140 int i;
141
142 /* in case feature bits run out again */
09da71b1 143 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 144
145 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 146 features[i].available = (u32)(dev->hw_features >> (32 * i));
147 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
148 features[i].active = (u32)(dev->features >> (32 * i));
149 features[i].never_changed =
150 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 151 }
5455c699
MM		 152
153 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
154 if (get_user(copy_size, sizeaddr))
155 return -EFAULT;
156
157 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
158 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
159
160 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
161 return -EFAULT;
162 useraddr += sizeof(cmd);
163 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
164 return -EFAULT;
165
166 return 0;
167}
168
169static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
170{
171 struct ethtool_sfeatures cmd;
172 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 173 netdev_features_t wanted = 0, valid = 0;
174 int i, ret = 0;
5455c699
MM		 175
176 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
177 return -EFAULT;
178 useraddr += sizeof(cmd);
179
180 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
181 return -EINVAL;
182
183 if (copy_from_user(features, useraddr, sizeof(features)))
184 return -EFAULT;
185
475414f6 186 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 187 valid |= (netdev_features_t)features[i].valid << (32 * i);
188 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 189 }
190
191 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 192 return -EINVAL;
193
475414f6
MM		 194 if (valid & ~dev->hw_features) {
195 valid &= dev->hw_features;
5455c699
MM		 196 ret |= ETHTOOL_F_UNSUPPORTED;
197 }
198
475414f6
MM		 199 dev->wanted_features &= ~valid;
200 dev->wanted_features |= wanted & valid;
6cb6a27c 201 __netdev_update_features(dev);
5455c699 202
475414f6 203 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 204 ret |= ETHTOOL_F_WISH;
205
206 return ret;
207}
208
f3a40945
AL		 209static int phy_get_sset_count(struct phy_device *phydev)
210{
211 int ret;
212
213 if (phydev->drv->get_sset_count &&
214 phydev->drv->get_strings &&
215 phydev->drv->get_stats) {
216 mutex_lock(&phydev->lock);
217 ret = phydev->drv->get_sset_count(phydev);
218 mutex_unlock(&phydev->lock);
219
220 return ret;
221 }
222
223 return -EOPNOTSUPP;
224}
225
340ae165
MM		 226static int __ethtool_get_sset_count(struct net_device *dev, int sset)
227{
228 const struct ethtool_ops *ops = dev->ethtool_ops;
229
5455c699
MM		 230 if (sset == ETH_SS_FEATURES)
231 return ARRAY_SIZE(netdev_features_strings);
232
892311f6
EP		 233 if (sset == ETH_SS_RSS_HASH_FUNCS)
234 return ARRAY_SIZE(rss_hash_func_strings);
235
a4244b0c
HHZ		 236 if (sset == ETH_SS_TUNABLES)
237 return ARRAY_SIZE(tunable_strings);
238
968ad9da
RL		 239 if (sset == ETH_SS_PHY_TUNABLES)
240 return ARRAY_SIZE(phy_tunable_strings);
241
f3a40945
AL		 242 if (sset == ETH_SS_PHY_STATS) {
243 if (dev->phydev)
244 return phy_get_sset_count(dev->phydev);
245 else
246 return -EOPNOTSUPP;
247 }
248
c03a14e8 249 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 250 return ops->get_sset_count(dev, sset);
251 else
252 return -EOPNOTSUPP;
253}
254
255static void __ethtool_get_strings(struct net_device *dev,
256 u32 stringset, u8 *data)
257{
258 const struct ethtool_ops *ops = dev->ethtool_ops;
259
5455c699
MM		 260 if (stringset == ETH_SS_FEATURES)
261 memcpy(data, netdev_features_strings,
262 sizeof(netdev_features_strings));
892311f6
EP		 263 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
264 memcpy(data, rss_hash_func_strings,
265 sizeof(rss_hash_func_strings));
a4244b0c
HHZ		 266 else if (stringset == ETH_SS_TUNABLES)
267 memcpy(data, tunable_strings, sizeof(tunable_strings));
968ad9da
RL		 268 else if (stringset == ETH_SS_PHY_TUNABLES)
269 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
f3a40945
AL		 270 else if (stringset == ETH_SS_PHY_STATS) {
271 struct phy_device *phydev = dev->phydev;
272
273 if (phydev) {
274 mutex_lock(&phydev->lock);
275 phydev->drv->get_strings(phydev, data);
276 mutex_unlock(&phydev->lock);
277 } else {
278 return;
279 }
280 } else
5455c699
MM		 281 /* ops->get_strings is valid because checked earlier */
282 ops->get_strings(dev, stringset, data);
340ae165
MM		 283}
284
c8f44aff 285static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 286{
287 /* feature masks of legacy discrete ethtool ops */
288
289 switch (eth_cmd) {
290 case ETHTOOL_GTXCSUM:
291 case ETHTOOL_STXCSUM:
a188222b 292 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
e83d360d
MM		 293 case ETHTOOL_GRXCSUM:
294 case ETHTOOL_SRXCSUM:
295 return NETIF_F_RXCSUM;
0a417704
MM		 296 case ETHTOOL_GSG:
297 case ETHTOOL_SSG:
298 return NETIF_F_SG;
299 case ETHTOOL_GTSO:
300 case ETHTOOL_STSO:
301 return NETIF_F_ALL_TSO;
0a417704
MM		 302 case ETHTOOL_GGSO:
303 case ETHTOOL_SGSO:
304 return NETIF_F_GSO;
305 case ETHTOOL_GGRO:
306 case ETHTOOL_SGRO:
307 return NETIF_F_GRO;
308 default:
309 BUG();
310 }
311}
312
0a417704
MM		 313static int ethtool_get_one_feature(struct net_device *dev,
314 char __user *useraddr, u32 ethcmd)
315{
c8f44aff 316 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 317 struct ethtool_value edata = {
318 .cmd = ethcmd,
86794881 319 .data = !!(dev->features & mask),
0a417704 320 };
0a417704 321
0a417704
MM		 322 if (copy_to_user(useraddr, &edata, sizeof(edata)))
323 return -EFAULT;
324 return 0;
325}
326
0a417704
MM		 327static int ethtool_set_one_feature(struct net_device *dev,
328 void __user *useraddr, u32 ethcmd)
329{
330 struct ethtool_value edata;
c8f44aff 331 netdev_features_t mask;
0a417704
MM		 332
333 if (copy_from_user(&edata, useraddr, sizeof(edata)))
334 return -EFAULT;
335
86794881
MM		 336 mask = ethtool_get_feature_mask(ethcmd);
337 mask &= dev->hw_features;
bc5787c6
MM		 338 if (!mask)
339 return -EOPNOTSUPP;
86794881 340
bc5787c6
MM		 341 if (edata.data)
342 dev->wanted_features |= mask;
343 else
344 dev->wanted_features &= ~mask;
86794881 345
bc5787c6 346 __netdev_update_features(dev);
86794881 347
bc5787c6
MM		 348 return 0;
349}
350
02b3a552
MM		 351#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
352 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 353#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
354 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
355 NETIF_F_RXHASH)
bc5787c6
MM		 356
357static u32 __ethtool_get_flags(struct net_device *dev)
358{
02b3a552
MM		 359 u32 flags = 0;
360
8a73125c
DF		 361 if (dev->features & NETIF_F_LRO)
362 flags |= ETH_FLAG_LRO;
363 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
364 flags |= ETH_FLAG_RXVLAN;
365 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
366 flags |= ETH_FLAG_TXVLAN;
367 if (dev->features & NETIF_F_NTUPLE)
368 flags |= ETH_FLAG_NTUPLE;
369 if (dev->features & NETIF_F_RXHASH)
370 flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 371
372 return flags;
0a417704
MM		 373}
374
bc5787c6 375static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 376{
c8f44aff 377 netdev_features_t features = 0, changed;
da8ac86c 378
02b3a552 379 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 380 return -EINVAL;
381
8a73125c
DF		 382 if (data & ETH_FLAG_LRO)
383 features |= NETIF_F_LRO;
384 if (data & ETH_FLAG_RXVLAN)
385 features |= NETIF_F_HW_VLAN_CTAG_RX;
386 if (data & ETH_FLAG_TXVLAN)
387 features |= NETIF_F_HW_VLAN_CTAG_TX;
388 if (data & ETH_FLAG_NTUPLE)
389 features |= NETIF_F_NTUPLE;
390 if (data & ETH_FLAG_RXHASH)
391 features |= NETIF_F_RXHASH;
02b3a552 392
da8ac86c 393 /* allow changing only bits set in hw_features */
02b3a552 394 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 395 if (changed & ~dev->hw_features)
396 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
397
398 dev->wanted_features =
02b3a552 399 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 400
6cb6a27c 401 __netdev_update_features(dev);
da8ac86c
MM		 402
403 return 0;
404}
405
5a6cd6de
AB		 406/* Given two link masks, AND them together and save the result in dst. */
407void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
408 struct ethtool_link_ksettings *src)
409{
410 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
411 unsigned int idx = 0;
412
413 for (; idx < size; idx++) {
414 dst->link_modes.supported[idx] &=
415 src->link_modes.supported[idx];
416 dst->link_modes.advertising[idx] &=
417 src->link_modes.advertising[idx];
418 }
419}
420EXPORT_SYMBOL(ethtool_intersect_link_masks);
421
6d62b4d5
PR		 422void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
423 u32 legacy_u32)
3f1ac7a7
DD		 424{
425 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
426 dst[0] = legacy_u32;
427}
6d62b4d5 428EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
3f1ac7a7
DD		 429
430/* return false if src had higher bits set. lower bits always updated. */
6d62b4d5
PR		 431bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
432 const unsigned long *src)
3f1ac7a7
DD		 433{
434 bool retval = true;
435
436 /* TODO: following test will soon always be true */
437 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
438 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
439
440 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
441 bitmap_fill(ext, 32);
442 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
443 if (bitmap_intersects(ext, src,
444 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
445 /* src mask goes beyond bit 31 */
446 retval = false;
447 }
448 }
449 *legacy_u32 = src[0];
450 return retval;
451}
6d62b4d5 452EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
3f1ac7a7
DD		 453
454/* return false if legacy contained non-0 deprecated fields
95491e3c 455 * maxtxpkt/maxrxpkt. rest of ksettings always updated
3f1ac7a7
DD		 456 */
457static bool
458convert_legacy_settings_to_link_ksettings(
459 struct ethtool_link_ksettings *link_ksettings,
460 const struct ethtool_cmd *legacy_settings)
461{
462 bool retval = true;
463
464 memset(link_ksettings, 0, sizeof(*link_ksettings));
465
466 /* This is used to tell users that driver is still using these
467 * deprecated legacy fields, and they should not use
468 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
469 */
95491e3c 470 if (legacy_settings->maxtxpkt ||
3f1ac7a7
DD		 471 legacy_settings->maxrxpkt)
472 retval = false;
473
6d62b4d5 474 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 475 link_ksettings->link_modes.supported,
476 legacy_settings->supported);
6d62b4d5 477 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 478 link_ksettings->link_modes.advertising,
479 legacy_settings->advertising);
6d62b4d5 480 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 481 link_ksettings->link_modes.lp_advertising,
482 legacy_settings->lp_advertising);
483 link_ksettings->base.speed
484 = ethtool_cmd_speed(legacy_settings);
485 link_ksettings->base.duplex
486 = legacy_settings->duplex;
487 link_ksettings->base.port
488 = legacy_settings->port;
489 link_ksettings->base.phy_address
490 = legacy_settings->phy_address;
491 link_ksettings->base.autoneg
492 = legacy_settings->autoneg;
493 link_ksettings->base.mdio_support
494 = legacy_settings->mdio_support;
495 link_ksettings->base.eth_tp_mdix
496 = legacy_settings->eth_tp_mdix;
497 link_ksettings->base.eth_tp_mdix_ctrl
498 = legacy_settings->eth_tp_mdix_ctrl;
499 return retval;
500}
501
502/* return false if ksettings link modes had higher bits
503 * set. legacy_settings always updated (best effort)
504 */
505static bool
506convert_link_ksettings_to_legacy_settings(
507 struct ethtool_cmd *legacy_settings,
508 const struct ethtool_link_ksettings *link_ksettings)
509{
510 bool retval = true;
511
512 memset(legacy_settings, 0, sizeof(*legacy_settings));
513 /* this also clears the deprecated fields in legacy structure:
514 * __u8 transceiver;
515 * __u32 maxtxpkt;
516 * __u32 maxrxpkt;
517 */
518
6d62b4d5 519 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 520 &legacy_settings->supported,
521 link_ksettings->link_modes.supported);
6d62b4d5 522 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 523 &legacy_settings->advertising,
524 link_ksettings->link_modes.advertising);
6d62b4d5 525 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 526 &legacy_settings->lp_advertising,
527 link_ksettings->link_modes.lp_advertising);
528 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
529 legacy_settings->duplex
530 = link_ksettings->base.duplex;
531 legacy_settings->port
532 = link_ksettings->base.port;
533 legacy_settings->phy_address
534 = link_ksettings->base.phy_address;
535 legacy_settings->autoneg
536 = link_ksettings->base.autoneg;
537 legacy_settings->mdio_support
538 = link_ksettings->base.mdio_support;
539 legacy_settings->eth_tp_mdix
540 = link_ksettings->base.eth_tp_mdix;
541 legacy_settings->eth_tp_mdix_ctrl
542 = link_ksettings->base.eth_tp_mdix_ctrl;
19cab887
FF		 543 legacy_settings->transceiver
544 = link_ksettings->base.transceiver;
3f1ac7a7
DD		 545 return retval;
546}
547
548/* number of 32-bit words to store the user's link mode bitmaps */
549#define __ETHTOOL_LINK_MODE_MASK_NU32 \
550 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
551
552/* layout of the struct passed from/to userland */
553struct ethtool_link_usettings {
554 struct ethtool_link_settings base;
555 struct {
556 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
557 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
558 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
559 } link_modes;
560};
561
562/* Internal kernel helper to query a device ethtool_link_settings.
563 *
564 * Backward compatibility note: for compatibility with legacy drivers
565 * that implement only the ethtool_cmd API, this has to work with both
566 * drivers implementing get_link_ksettings API and drivers
567 * implementing get_settings API. When drivers implement get_settings
568 * and report ethtool_cmd deprecated fields
569 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
570 * because the resulting struct ethtool_link_settings does not report them.
571 */
572int __ethtool_get_link_ksettings(struct net_device *dev,
573 struct ethtool_link_ksettings *link_ksettings)
574{
575 int err;
576 struct ethtool_cmd cmd;
577
578 ASSERT_RTNL();
579
580 if (dev->ethtool_ops->get_link_ksettings) {
581 memset(link_ksettings, 0, sizeof(*link_ksettings));
582 return dev->ethtool_ops->get_link_ksettings(dev,
583 link_ksettings);
584 }
585
586 /* driver doesn't support %ethtool_link_ksettings API. revert to
587 * legacy %ethtool_cmd API, unless it's not supported either.
588 * TODO: remove when ethtool_ops::get_settings disappears internally
589 */
3237fc63
DD		 590 if (!dev->ethtool_ops->get_settings)
591 return -EOPNOTSUPP;
592
593 memset(&cmd, 0, sizeof(cmd));
594 cmd.cmd = ETHTOOL_GSET;
595 err = dev->ethtool_ops->get_settings(dev, &cmd);
3f1ac7a7
DD		 596 if (err < 0)
597 return err;
598
599 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
600 */
601 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
602 return err;
603}
604EXPORT_SYMBOL(__ethtool_get_link_ksettings);
605
606/* convert ethtool_link_usettings in user space to a kernel internal
607 * ethtool_link_ksettings. return 0 on success, errno on error.
608 */
609static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
610 const void __user *from)
611{
612 struct ethtool_link_usettings link_usettings;
613
614 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
615 return -EFAULT;
616
617 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
618 bitmap_from_u32array(to->link_modes.supported,
619 __ETHTOOL_LINK_MODE_MASK_NBITS,
620 link_usettings.link_modes.supported,
621 __ETHTOOL_LINK_MODE_MASK_NU32);
622 bitmap_from_u32array(to->link_modes.advertising,
623 __ETHTOOL_LINK_MODE_MASK_NBITS,
624 link_usettings.link_modes.advertising,
625 __ETHTOOL_LINK_MODE_MASK_NU32);
626 bitmap_from_u32array(to->link_modes.lp_advertising,
627 __ETHTOOL_LINK_MODE_MASK_NBITS,
628 link_usettings.link_modes.lp_advertising,
629 __ETHTOOL_LINK_MODE_MASK_NU32);
630
631 return 0;
632}
633
634/* convert a kernel internal ethtool_link_ksettings to
635 * ethtool_link_usettings in user space. return 0 on success, errno on
636 * error.
637 */
638static int
639store_link_ksettings_for_user(void __user *to,
640 const struct ethtool_link_ksettings *from)
641{
642 struct ethtool_link_usettings link_usettings;
643
644 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
645 bitmap_to_u32array(link_usettings.link_modes.supported,
646 __ETHTOOL_LINK_MODE_MASK_NU32,
647 from->link_modes.supported,
648 __ETHTOOL_LINK_MODE_MASK_NBITS);
649 bitmap_to_u32array(link_usettings.link_modes.advertising,
650 __ETHTOOL_LINK_MODE_MASK_NU32,
651 from->link_modes.advertising,
652 __ETHTOOL_LINK_MODE_MASK_NBITS);
653 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
654 __ETHTOOL_LINK_MODE_MASK_NU32,
655 from->link_modes.lp_advertising,
656 __ETHTOOL_LINK_MODE_MASK_NBITS);
657
658 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
659 return -EFAULT;
660
661 return 0;
662}
663
664/* Query device for its ethtool_link_settings.
665 *
666 * Backward compatibility note: this function must fail when driver
667 * does not implement ethtool::get_link_ksettings, even if legacy
668 * ethtool_ops::get_settings is implemented. This tells new versions
669 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
670 * this driver, so that they can correctly access the ethtool_cmd
671 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
672 * implements ethtool_ops::get_settings anymore.
673 */
674static int ethtool_get_link_ksettings(struct net_device *dev,
675 void __user *useraddr)
676{
677 int err = 0;
678 struct ethtool_link_ksettings link_ksettings;
679
680 ASSERT_RTNL();
681
682 if (!dev->ethtool_ops->get_link_ksettings)
683 return -EOPNOTSUPP;
684
685 /* handle bitmap nbits handshake */
686 if (copy_from_user(&link_ksettings.base, useraddr,
687 sizeof(link_ksettings.base)))
688 return -EFAULT;
689
690 if (__ETHTOOL_LINK_MODE_MASK_NU32
691 != link_ksettings.base.link_mode_masks_nwords) {
692 /* wrong link mode nbits requested */
693 memset(&link_ksettings, 0, sizeof(link_ksettings));
793cf87d 694 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
3f1ac7a7
DD		 695 /* send back number of words required as negative val */
696 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
697 "need too many bits for link modes!");
698 link_ksettings.base.link_mode_masks_nwords
699 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
700
701 /* copy the base fields back to user, not the link
702 * mode bitmaps
703 */
704 if (copy_to_user(useraddr, &link_ksettings.base,
705 sizeof(link_ksettings.base)))
706 return -EFAULT;
707
708 return 0;
709 }
710
711 /* handshake successful: user/kernel agree on
712 * link_mode_masks_nwords
713 */
714
715 memset(&link_ksettings, 0, sizeof(link_ksettings));
716 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
717 if (err < 0)
718 return err;
719
720 /* make sure we tell the right values to user */
721 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
722 link_ksettings.base.link_mode_masks_nwords
723 = __ETHTOOL_LINK_MODE_MASK_NU32;
724
725 return store_link_ksettings_for_user(useraddr, &link_ksettings);
726}
727
728/* Update device ethtool_link_settings.
729 *
730 * Backward compatibility note: this function must fail when driver
731 * does not implement ethtool::set_link_ksettings, even if legacy
732 * ethtool_ops::set_settings is implemented. This tells new versions
733 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
734 * this driver, so that they can correctly update the ethtool_cmd
735 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
736 * implements ethtool_ops::get_settings anymore.
737 */
738static int ethtool_set_link_ksettings(struct net_device *dev,
739 void __user *useraddr)
740{
741 int err;
742 struct ethtool_link_ksettings link_ksettings;
743
744 ASSERT_RTNL();
745
746 if (!dev->ethtool_ops->set_link_ksettings)
747 return -EOPNOTSUPP;
748
749 /* make sure nbits field has expected value */
750 if (copy_from_user(&link_ksettings.base, useraddr,
751 sizeof(link_ksettings.base)))
752 return -EFAULT;
753
754 if (__ETHTOOL_LINK_MODE_MASK_NU32
755 != link_ksettings.base.link_mode_masks_nwords)
756 return -EINVAL;
757
758 /* copy the whole structure, now that we know it has expected
759 * format
760 */
761 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
762 if (err)
763 return err;
764
765 /* re-check nwords field, just in case */
766 if (__ETHTOOL_LINK_MODE_MASK_NU32
767 != link_ksettings.base.link_mode_masks_nwords)
768 return -EINVAL;
769
770 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
771}
772
3f1ac7a7
DD		 773/* Query device for its ethtool_cmd settings.
774 *
775 * Backward compatibility note: for compatibility with legacy ethtool,
776 * this has to work with both drivers implementing get_link_ksettings
777 * API and drivers implementing get_settings API. When drivers
778 * implement get_link_ksettings and report higher link mode bits, a
779 * kernel warning is logged once (with name of 1st driver/device) to
780 * recommend user to upgrade ethtool, but the command is successful
781 * (only the lower link mode bits reported back to user).
782 */
4bc71cb9
JP		 783static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
784{
4bc71cb9
JP		 785 struct ethtool_cmd cmd;
786
3f1ac7a7
DD		 787 ASSERT_RTNL();
788
789 if (dev->ethtool_ops->get_link_ksettings) {
790 /* First, use link_ksettings API if it is supported */
791 int err;
792 struct ethtool_link_ksettings link_ksettings;
793
794 memset(&link_ksettings, 0, sizeof(link_ksettings));
795 err = dev->ethtool_ops->get_link_ksettings(dev,
796 &link_ksettings);
797 if (err < 0)
798 return err;
71891e2d
SH		 799 convert_link_ksettings_to_legacy_settings(&cmd,
800 &link_ksettings);
3f1ac7a7
DD		 801
802 /* send a sensible cmd tag back to user */
803 cmd.cmd = ETHTOOL_GSET;
804 } else {
3f1ac7a7
DD		 805 /* driver doesn't support %ethtool_link_ksettings
806 * API. revert to legacy %ethtool_cmd API, unless it's
807 * not supported either.
808 */
3237fc63
DD		 809 int err;
810
811 if (!dev->ethtool_ops->get_settings)
812 return -EOPNOTSUPP;
813
814 memset(&cmd, 0, sizeof(cmd));
815 cmd.cmd = ETHTOOL_GSET;
816 err = dev->ethtool_ops->get_settings(dev, &cmd);
3f1ac7a7
DD		 817 if (err < 0)
818 return err;
819 }
1da177e4
LT		 820
821 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
822 return -EFAULT;
3f1ac7a7 823
1da177e4
LT		 824 return 0;
825}
826
3f1ac7a7
DD		 827/* Update device link settings with given ethtool_cmd.
828 *
829 * Backward compatibility note: for compatibility with legacy ethtool,
830 * this has to work with both drivers implementing set_link_ksettings
831 * API and drivers implementing set_settings API. When drivers
832 * implement set_link_ksettings and user's request updates deprecated
833 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
834 * warning is logged once (with name of 1st driver/device) to
835 * recommend user to upgrade ethtool, and the request is rejected.
836 */
1da177e4
LT		 837static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
838{
839 struct ethtool_cmd cmd;
840
3f1ac7a7 841 ASSERT_RTNL();
1da177e4
LT		 842
843 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
844 return -EFAULT;
845
3f1ac7a7
DD		 846 /* first, try new %ethtool_link_ksettings API. */
847 if (dev->ethtool_ops->set_link_ksettings) {
848 struct ethtool_link_ksettings link_ksettings;
849
850 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
851 &cmd))
852 return -EINVAL;
853
854 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
855 link_ksettings.base.link_mode_masks_nwords
856 = __ETHTOOL_LINK_MODE_MASK_NU32;
857 return dev->ethtool_ops->set_link_ksettings(dev,
858 &link_ksettings);
859 }
860
861 /* legacy %ethtool_cmd API */
862
863 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
864 * disappears internally
865 */
866
867 if (!dev->ethtool_ops->set_settings)
868 return -EOPNOTSUPP;
869
1da177e4
LT		 870 return dev->ethtool_ops->set_settings(dev, &cmd);
871}
872
97f8aefb 873static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
874 void __user *useraddr)
1da177e4
LT		 875{
876 struct ethtool_drvinfo info;
76fd8593 877 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 878
1da177e4
LT		 879 memset(&info, 0, sizeof(info));
880 info.cmd = ETHTOOL_GDRVINFO;
c03a14e8 881 if (ops->get_drvinfo) {
01414802
BH		 882 ops->get_drvinfo(dev, &info);
883 } else if (dev->dev.parent && dev->dev.parent->driver) {
884 strlcpy(info.bus_info, dev_name(dev->dev.parent),
885 sizeof(info.bus_info));
886 strlcpy(info.driver, dev->dev.parent->driver->name,
887 sizeof(info.driver));
888 } else {
889 return -EOPNOTSUPP;
890 }
1da177e4 891
723b2f57
JG		 892 /*
893 * this method of obtaining string set info is deprecated;
d17792eb 894 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 895 */
c03a14e8 896 if (ops->get_sset_count) {
ff03d49f
JG		 897 int rc;
898
899 rc = ops->get_sset_count(dev, ETH_SS_TEST);
900 if (rc >= 0)
901 info.testinfo_len = rc;
902 rc = ops->get_sset_count(dev, ETH_SS_STATS);
903 if (rc >= 0)
904 info.n_stats = rc;
339bf024
JG		 905 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
906 if (rc >= 0)
907 info.n_priv_flags = rc;
ff03d49f 908 }
c03a14e8 909 if (ops->get_regs_len)
1da177e4 910 info.regdump_len = ops->get_regs_len(dev);
c03a14e8 911 if (ops->get_eeprom_len)
1da177e4
LT		 912 info.eedump_len = ops->get_eeprom_len(dev);
913
914 if (copy_to_user(useraddr, &info, sizeof(info)))
915 return -EFAULT;
916 return 0;
917}
918
f5c445ed 919static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 920 void __user *useraddr)
723b2f57
JG		 921{
922 struct ethtool_sset_info info;
723b2f57
JG		 923 u64 sset_mask;
924 int i, idx = 0, n_bits = 0, ret, rc;
925 u32 *info_buf = NULL;
926
723b2f57
JG		 927 if (copy_from_user(&info, useraddr, sizeof(info)))
928 return -EFAULT;
929
930 /* store copy of mask, because we zero struct later on */
931 sset_mask = info.sset_mask;
932 if (!sset_mask)
933 return 0;
934
935 /* calculate size of return buffer */
d17792eb 936 n_bits = hweight64(sset_mask);
723b2f57
JG		 937
938 memset(&info, 0, sizeof(info));
939 info.cmd = ETHTOOL_GSSET_INFO;
940
941 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
942 if (!info_buf)
943 return -ENOMEM;
944
945 /*
946 * fill return buffer based on input bitmask and successful
947 * get_sset_count return
948 */
949 for (i = 0; i < 64; i++) {
950 if (!(sset_mask & (1ULL << i)))
951 continue;
952
340ae165 953 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 954 if (rc >= 0) {
955 info.sset_mask |= (1ULL << i);
956 info_buf[idx++] = rc;
957 }
958 }
959
960 ret = -EFAULT;
961 if (copy_to_user(useraddr, &info, sizeof(info)))
962 goto out;
963
964 useraddr += offsetof(struct ethtool_sset_info, data);
965 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
966 goto out;
967
968 ret = 0;
969
970out:
971 kfree(info_buf);
972 return ret;
973}
974
97f8aefb 975static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 976 u32 cmd, void __user *useraddr)
0853ad66 977{
bf988435
BH		 978 struct ethtool_rxnfc info;
979 size_t info_size = sizeof(info);
55664f32 980 int rc;
0853ad66 981
59089d8d 982 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 983 return -EOPNOTSUPP;
984
bf988435
BH		 985 /* struct ethtool_rxnfc was originally defined for
986 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
987 * members. User-space might still be using that
988 * definition. */
989 if (cmd == ETHTOOL_SRXFH)
990 info_size = (offsetof(struct ethtool_rxnfc, data) +
991 sizeof(info.data));
992
993 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 994 return -EFAULT;
995
55664f32
BH		 996 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
997 if (rc)
998 return rc;
999
1000 if (cmd == ETHTOOL_SRXCLSRLINS &&
1001 copy_to_user(useraddr, &info, info_size))
1002 return -EFAULT;
1003
1004 return 0;
0853ad66
SB		 1005}
1006
97f8aefb 1007static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 1008 u32 cmd, void __user *useraddr)
0853ad66
SB		 1009{
1010 struct ethtool_rxnfc info;
bf988435 1011 size_t info_size = sizeof(info);
59089d8d
SB		 1012 const struct ethtool_ops *ops = dev->ethtool_ops;
1013 int ret;
1014 void *rule_buf = NULL;
0853ad66 1015
59089d8d 1016 if (!ops->get_rxnfc)
0853ad66
SB		 1017 return -EOPNOTSUPP;
1018
bf988435
BH		 1019 /* struct ethtool_rxnfc was originally defined for
1020 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1021 * members. User-space might still be using that
1022 * definition. */
1023 if (cmd == ETHTOOL_GRXFH)
1024 info_size = (offsetof(struct ethtool_rxnfc, data) +
1025 sizeof(info.data));
1026
1027 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 1028 return -EFAULT;
1029
59089d8d
SB		 1030 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1031 if (info.rule_cnt > 0) {
db048b69 1032 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 1033 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 1034 GFP_USER);
59089d8d
SB		 1035 if (!rule_buf)
1036 return -ENOMEM;
1037 }
1038 }
0853ad66 1039
59089d8d
SB		 1040 ret = ops->get_rxnfc(dev, &info, rule_buf);
1041 if (ret < 0)
1042 goto err_out;
1043
1044 ret = -EFAULT;
bf988435 1045 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 1046 goto err_out;
1047
1048 if (rule_buf) {
1049 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1050 if (copy_to_user(useraddr, rule_buf,
1051 info.rule_cnt * sizeof(u32)))
1052 goto err_out;
1053 }
1054 ret = 0;
1055
1056err_out:
c9caceca 1057 kfree(rule_buf);
59089d8d
SB		 1058
1059 return ret;
0853ad66
SB		 1060}
1061
3de0b592
VD		 1062static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1063 struct ethtool_rxnfc *rx_rings,
1064 u32 size)
1065{
fb95cd8d 1066 int i;
3de0b592
VD		 1067
1068 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
fb95cd8d 1069 return -EFAULT;
3de0b592
VD		 1070
1071 /* Validate ring indices */
fb95cd8d
BH		 1072 for (i = 0; i < size; i++)
1073 if (indir[i] >= rx_rings->data)
1074 return -EINVAL;
1075
1076 return 0;
3de0b592
VD		 1077}
1078
ba905f5e 1079u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
960fb622
ED		 1080
1081void netdev_rss_key_fill(void *buffer, size_t len)
1082{
1083 BUG_ON(len > sizeof(netdev_rss_key));
1084 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1085 memcpy(buffer, netdev_rss_key, len);
1086}
1087EXPORT_SYMBOL(netdev_rss_key_fill);
1088
d4ab4286
KJ		 1089static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1090{
1091 u32 dev_size, current_max = 0;
1092 u32 *indir;
1093 int ret;
1094
1095 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1096 !dev->ethtool_ops->get_rxfh)
1097 return -EOPNOTSUPP;
1098 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1099 if (dev_size == 0)
1100 return -EOPNOTSUPP;
1101
1102 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1103 if (!indir)
1104 return -ENOMEM;
1105
1106 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1107 if (ret)
1108 goto out;
1109
1110 while (dev_size--)
1111 current_max = max(current_max, indir[dev_size]);
1112
1113 *max = current_max;
1114
1115out:
1116 kfree(indir);
1117 return ret;
1118}
1119
a5b6ee29
BH		 1120static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1121 void __user *useraddr)
1122{
7850f63f
BH		 1123 u32 user_size, dev_size;
1124 u32 *indir;
a5b6ee29
BH		 1125 int ret;
1126
7850f63f 1127 if (!dev->ethtool_ops->get_rxfh_indir_size ||
fe62d001 1128 !dev->ethtool_ops->get_rxfh)
7850f63f
BH		 1129 return -EOPNOTSUPP;
1130 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1131 if (dev_size == 0)
a5b6ee29
BH		 1132 return -EOPNOTSUPP;
1133
7850f63f 1134 if (copy_from_user(&user_size,
a5b6ee29 1135 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1136 sizeof(user_size)))
a5b6ee29
BH		 1137 return -EFAULT;
1138
7850f63f
BH		 1139 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1140 &dev_size, sizeof(dev_size)))
1141 return -EFAULT;
1142
1143 /* If the user buffer size is 0, this is just a query for the
1144 * device table size. Otherwise, if it's smaller than the
1145 * device table size it's an error.
1146 */
1147 if (user_size < dev_size)
1148 return user_size == 0 ? 0 : -EINVAL;
1149
1150 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1151 if (!indir)
1152 return -ENOMEM;
1153
892311f6 1154 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
a5b6ee29
BH		 1155 if (ret)
1156 goto out;
1157
7850f63f
BH		 1158 if (copy_to_user(useraddr +
1159 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1160 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 1161 ret = -EFAULT;
1162
1163out:
1164 kfree(indir);
1165 return ret;
1166}
1167
1168static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1169 void __user *useraddr)
1170{
7850f63f
BH		 1171 struct ethtool_rxnfc rx_rings;
1172 u32 user_size, dev_size, i;
1173 u32 *indir;
c03a14e8 1174 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29 1175 int ret;
3de0b592 1176 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
a5b6ee29 1177
fe62d001 1178 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
c03a14e8 1179 !ops->get_rxnfc)
7850f63f 1180 return -EOPNOTSUPP;
c03a14e8
JP		 1181
1182 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 1183 if (dev_size == 0)
a5b6ee29
BH		 1184 return -EOPNOTSUPP;
1185
7850f63f 1186 if (copy_from_user(&user_size,
a5b6ee29 1187 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1188 sizeof(user_size)))
a5b6ee29
BH		 1189 return -EFAULT;
1190
278bc429 1191 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 1192 return -EINVAL;
1193
1194 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1195 if (!indir)
1196 return -ENOMEM;
1197
7850f63f 1198 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 1199 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 1200 if (ret)
1201 goto out;
278bc429
BH		 1202
1203 if (user_size == 0) {
1204 for (i = 0; i < dev_size; i++)
1205 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1206 } else {
3de0b592
VD		 1207 ret = ethtool_copy_validate_indir(indir,
1208 useraddr + ringidx_offset,
1209 &rx_rings,
1210 dev_size);
1211 if (ret)
1212 goto out;
1213 }
1214
892311f6 1215 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
d4ab4286
KJ		 1216 if (ret)
1217 goto out;
1218
1219 /* indicate whether rxfh was set to default */
1220 if (user_size == 0)
1221 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1222 else
1223 dev->priv_flags |= IFF_RXFH_CONFIGURED;
3de0b592
VD		 1224
1225out:
1226 kfree(indir);
1227 return ret;
1228}
1229
1230static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1231 void __user *useraddr)
1232{
1233 int ret;
1234 const struct ethtool_ops *ops = dev->ethtool_ops;
f062a384 1235 u32 user_indir_size, user_key_size;
3de0b592 1236 u32 dev_indir_size = 0, dev_key_size = 0;
f062a384 1237 struct ethtool_rxfh rxfh;
3de0b592 1238 u32 total_size;
f062a384 1239 u32 indir_bytes;
3de0b592 1240 u32 *indir = NULL;
892311f6 1241 u8 dev_hfunc = 0;
3de0b592
VD		 1242 u8 *hkey = NULL;
1243 u8 *rss_config;
1244
892311f6 1245 if (!ops->get_rxfh)
3de0b592
VD		 1246 return -EOPNOTSUPP;
1247
1248 if (ops->get_rxfh_indir_size)
1249 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592
VD		 1250 if (ops->get_rxfh_key_size)
1251 dev_key_size = ops->get_rxfh_key_size(dev);
1252
f062a384 1253 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592 1254 return -EFAULT;
f062a384
BH		 1255 user_indir_size = rxfh.indir_size;
1256 user_key_size = rxfh.key_size;
3de0b592 1257
f062a384 1258 /* Check that reserved fields are 0 for now */
892311f6
EP		 1259 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1260 rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384
BH		 1261 return -EINVAL;
1262
1263 rxfh.indir_size = dev_indir_size;
1264 rxfh.key_size = dev_key_size;
1265 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
3de0b592
VD		 1266 return -EFAULT;
1267
3de0b592
VD		 1268 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1269 (user_key_size && (user_key_size != dev_key_size)))
1270 return -EINVAL;
1271
1272 indir_bytes = user_indir_size * sizeof(indir[0]);
1273 total_size = indir_bytes + user_key_size;
1274 rss_config = kzalloc(total_size, GFP_USER);
1275 if (!rss_config)
1276 return -ENOMEM;
1277
1278 if (user_indir_size)
1279 indir = (u32 *)rss_config;
1280
1281 if (user_key_size)
1282 hkey = rss_config + indir_bytes;
1283
892311f6
EP		 1284 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1285 if (ret)
1286 goto out;
3de0b592 1287
892311f6
EP		 1288 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1289 &dev_hfunc, sizeof(rxfh.hfunc))) {
1290 ret = -EFAULT;
1291 } else if (copy_to_user(useraddr +
1292 offsetof(struct ethtool_rxfh, rss_config[0]),
1293 rss_config, total_size)) {
1294 ret = -EFAULT;
1295 }
1296out:
3de0b592
VD		 1297 kfree(rss_config);
1298
1299 return ret;
1300}
1301
1302static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1303 void __user *useraddr)
1304{
1305 int ret;
1306 const struct ethtool_ops *ops = dev->ethtool_ops;
1307 struct ethtool_rxnfc rx_rings;
f062a384
BH		 1308 struct ethtool_rxfh rxfh;
1309 u32 dev_indir_size = 0, dev_key_size = 0, i;
3de0b592
VD		 1310 u32 *indir = NULL, indir_bytes = 0;
1311 u8 *hkey = NULL;
1312 u8 *rss_config;
3de0b592
VD		 1313 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1314
892311f6 1315 if (!ops->get_rxnfc || !ops->set_rxfh)
3de0b592
VD		 1316 return -EOPNOTSUPP;
1317
1318 if (ops->get_rxfh_indir_size)
1319 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592 1320 if (ops->get_rxfh_key_size)
d340c862 1321 dev_key_size = ops->get_rxfh_key_size(dev);
3de0b592 1322
f062a384 1323 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592
VD		 1324 return -EFAULT;
1325
f062a384 1326 /* Check that reserved fields are 0 for now */
892311f6
EP		 1327 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1328 rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384
BH		 1329 return -EINVAL;
1330
892311f6
EP		 1331 /* If either indir, hash key or function is valid, proceed further.
1332 * Must request at least one change: indir size, hash key or function.
3de0b592 1333 */
f062a384
BH		 1334 if ((rxfh.indir_size &&
1335 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1336 rxfh.indir_size != dev_indir_size) ||
1337 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1338 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
892311f6 1339 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
3de0b592
VD		 1340 return -EINVAL;
1341
f062a384 1342 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
3de0b592
VD		 1343 indir_bytes = dev_indir_size * sizeof(indir[0]);
1344
f062a384 1345 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
3de0b592
VD		 1346 if (!rss_config)
1347 return -ENOMEM;
1348
1349 rx_rings.cmd = ETHTOOL_GRXRINGS;
1350 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1351 if (ret)
1352 goto out;
1353
f062a384
BH		 1354 /* rxfh.indir_size == 0 means reset the indir table to default.
1355 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
3de0b592 1356 */
f062a384
BH		 1357 if (rxfh.indir_size &&
1358 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
3de0b592
VD		 1359 indir = (u32 *)rss_config;
1360 ret = ethtool_copy_validate_indir(indir,
1361 useraddr + rss_cfg_offset,
1362 &rx_rings,
f062a384 1363 rxfh.indir_size);
3de0b592 1364 if (ret)
7850f63f 1365 goto out;
f062a384 1366 } else if (rxfh.indir_size == 0) {
3de0b592
VD		 1367 indir = (u32 *)rss_config;
1368 for (i = 0; i < dev_indir_size; i++)
1369 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1370 }
278bc429 1371
f062a384 1372 if (rxfh.key_size) {
3de0b592
VD		 1373 hkey = rss_config + indir_bytes;
1374 if (copy_from_user(hkey,
1375 useraddr + rss_cfg_offset + indir_bytes,
f062a384 1376 rxfh.key_size)) {
3de0b592
VD		 1377 ret = -EFAULT;
1378 goto out;
278bc429 1379 }
7850f63f
BH		 1380 }
1381
892311f6 1382 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
d4ab4286
KJ		 1383 if (ret)
1384 goto out;
1385
1386 /* indicate whether rxfh was set to default */
1387 if (rxfh.indir_size == 0)
1388 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1389 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1390 dev->priv_flags |= IFF_RXFH_CONFIGURED;
a5b6ee29
BH		 1391
1392out:
3de0b592 1393 kfree(rss_config);
a5b6ee29
BH		 1394 return ret;
1395}
1396
1da177e4
LT		 1397static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1398{
1399 struct ethtool_regs regs;
76fd8593 1400 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1401 void *regbuf;
1402 int reglen, ret;
1403
1404 if (!ops->get_regs || !ops->get_regs_len)
1405 return -EOPNOTSUPP;
1406
1407 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1408 return -EFAULT;
1409
1410 reglen = ops->get_regs_len(dev);
1411 if (regs.len > reglen)
1412 regs.len = reglen;
1413
3808d348
SG		 1414 regbuf = NULL;
1415 if (reglen) {
1416 regbuf = vzalloc(reglen);
1417 if (!regbuf)
1418 return -ENOMEM;
1419 }
1da177e4
LT		 1420
1421 ops->get_regs(dev, &regs, regbuf);
1422
1423 ret = -EFAULT;
1424 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1425 goto out;
1426 useraddr += offsetof(struct ethtool_regs, data);
67ae7cf1 1427 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1da177e4
LT		 1428 goto out;
1429 ret = 0;
1430
1431 out:
a77f5db3 1432 vfree(regbuf);
1da177e4
LT		 1433 return ret;
1434}
1435
d73d3a8c
BH		 1436static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1437{
1438 struct ethtool_value reset;
1439 int ret;
1440
1441 if (!dev->ethtool_ops->reset)
1442 return -EOPNOTSUPP;
1443
1444 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1445 return -EFAULT;
1446
1447 ret = dev->ethtool_ops->reset(dev, &reset.data);
1448 if (ret)
1449 return ret;
1450
1451 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1452 return -EFAULT;
1453 return 0;
1454}
1455
1da177e4
LT		 1456static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1457{
8e557421 1458 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 1459
1460 if (!dev->ethtool_ops->get_wol)
1461 return -EOPNOTSUPP;
1462
1463 dev->ethtool_ops->get_wol(dev, &wol);
1464
1465 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1466 return -EFAULT;
1467 return 0;
1468}
1469
1470static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1471{
1472 struct ethtool_wolinfo wol;
1473
1474 if (!dev->ethtool_ops->set_wol)
1475 return -EOPNOTSUPP;
1476
1477 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1478 return -EFAULT;
1479
1480 return dev->ethtool_ops->set_wol(dev, &wol);
1481}
1482
80f12ecc
YM		 1483static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1484{
1485 struct ethtool_eee edata;
1486 int rc;
1487
1488 if (!dev->ethtool_ops->get_eee)
1489 return -EOPNOTSUPP;
1490
1491 memset(&edata, 0, sizeof(struct ethtool_eee));
1492 edata.cmd = ETHTOOL_GEEE;
1493 rc = dev->ethtool_ops->get_eee(dev, &edata);
1494
1495 if (rc)
1496 return rc;
1497
1498 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1499 return -EFAULT;
1500
1501 return 0;
1502}
1503
1504static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1505{
1506 struct ethtool_eee edata;
1507
1508 if (!dev->ethtool_ops->set_eee)
1509 return -EOPNOTSUPP;
1510
1511 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1512 return -EFAULT;
1513
1514 return dev->ethtool_ops->set_eee(dev, &edata);
1515}
1516
1da177e4
LT		 1517static int ethtool_nway_reset(struct net_device *dev)
1518{
1519 if (!dev->ethtool_ops->nway_reset)
1520 return -EOPNOTSUPP;
1521
1522 return dev->ethtool_ops->nway_reset(dev);
1523}
1524
e596e6e4
BH		 1525static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1526{
1527 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1528
1529 if (!dev->ethtool_ops->get_link)
1530 return -EOPNOTSUPP;
1531
1532 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1533
1534 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1535 return -EFAULT;
1536 return 0;
1537}
1538
081d094e
BH		 1539static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1540 int (*getter)(struct net_device *,
1541 struct ethtool_eeprom *, u8 *),
1542 u32 total_len)
1da177e4
LT		 1543{
1544 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 1545 void __user *userbuf = useraddr + sizeof(eeprom);
1546 u32 bytes_remaining;
1da177e4 1547 u8 *data;
b131dd5d 1548 int ret = 0;
1da177e4 1549
1da177e4
LT		 1550 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1551 return -EFAULT;
1552
1553 /* Check for wrap and zero */
1554 if (eeprom.offset + eeprom.len <= eeprom.offset)
1555 return -EINVAL;
1556
1557 /* Check for exceeding total eeprom len */
081d094e 1558 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 1559 return -EINVAL;
1560
b131dd5d 1561 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1562 if (!data)
1563 return -ENOMEM;
1564
b131dd5d
MSB		 1565 bytes_remaining = eeprom.len;
1566 while (bytes_remaining > 0) {
1567 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1568
081d094e 1569 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 1570 if (ret)
1571 break;
1572 if (copy_to_user(userbuf, data, eeprom.len)) {
1573 ret = -EFAULT;
1574 break;
1575 }
1576 userbuf += eeprom.len;
1577 eeprom.offset += eeprom.len;
1578 bytes_remaining -= eeprom.len;
1579 }
1da177e4 1580
c5835df9
MSB		 1581 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1582 eeprom.offset -= eeprom.len;
1583 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1584 ret = -EFAULT;
1585
1da177e4
LT		 1586 kfree(data);
1587 return ret;
1588}
1589
081d094e
BH		 1590static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1591{
1592 const struct ethtool_ops *ops = dev->ethtool_ops;
1593
e0fb6fb6
GR		 1594 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1595 !ops->get_eeprom_len(dev))
081d094e
BH		 1596 return -EOPNOTSUPP;
1597
1598 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1599 ops->get_eeprom_len(dev));
1600}
1601
1da177e4
LT		 1602static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1603{
1604 struct ethtool_eeprom eeprom;
76fd8593 1605 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1606 void __user *userbuf = useraddr + sizeof(eeprom);
1607 u32 bytes_remaining;
1da177e4 1608 u8 *data;
b131dd5d 1609 int ret = 0;
1da177e4 1610
e0fb6fb6
GR		 1611 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1612 !ops->get_eeprom_len(dev))
1da177e4
LT		 1613 return -EOPNOTSUPP;
1614
1615 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1616 return -EFAULT;
1617
1618 /* Check for wrap and zero */
1619 if (eeprom.offset + eeprom.len <= eeprom.offset)
1620 return -EINVAL;
1621
1622 /* Check for exceeding total eeprom len */
1623 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1624 return -EINVAL;
1625
b131dd5d 1626 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1627 if (!data)
1628 return -ENOMEM;
1629
b131dd5d
MSB		 1630 bytes_remaining = eeprom.len;
1631 while (bytes_remaining > 0) {
1632 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1633
1634 if (copy_from_user(data, userbuf, eeprom.len)) {
1635 ret = -EFAULT;
1636 break;
1637 }
1638 ret = ops->set_eeprom(dev, &eeprom, data);
1639 if (ret)
1640 break;
1641 userbuf += eeprom.len;
1642 eeprom.offset += eeprom.len;
1643 bytes_remaining -= eeprom.len;
1644 }
1da177e4 1645
1da177e4
LT		 1646 kfree(data);
1647 return ret;
1648}
1649
97f8aefb 1650static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1651 void __user *useraddr)
1da177e4 1652{
8e557421 1653 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 1654
1655 if (!dev->ethtool_ops->get_coalesce)
1656 return -EOPNOTSUPP;
1657
1658 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1659
1660 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1661 return -EFAULT;
1662 return 0;
1663}
1664
97f8aefb 1665static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1666 void __user *useraddr)
1da177e4
LT		 1667{
1668 struct ethtool_coalesce coalesce;
1669
fa04ae5c 1670 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1671 return -EOPNOTSUPP;
1672
1673 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1674 return -EFAULT;
1675
1676 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1677}
1678
1679static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1680{
8e557421 1681 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1682
1683 if (!dev->ethtool_ops->get_ringparam)
1684 return -EOPNOTSUPP;
1685
1686 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1687
1688 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1689 return -EFAULT;
1690 return 0;
1691}
1692
1693static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1694{
1695 struct ethtool_ringparam ringparam;
1696
1697 if (!dev->ethtool_ops->set_ringparam)
1698 return -EOPNOTSUPP;
1699
1700 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1701 return -EFAULT;
1702
1703 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1704}
1705
8b5933c3 1706static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1707 void __user *useraddr)
1708{
1709 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1710
1711 if (!dev->ethtool_ops->get_channels)
1712 return -EOPNOTSUPP;
1713
1714 dev->ethtool_ops->get_channels(dev, &channels);
1715
1716 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1717 return -EFAULT;
1718 return 0;
1719}
1720
1721static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1722 void __user *useraddr)
1723{
31a86d13 1724 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
d4ab4286 1725 u32 max_rx_in_use = 0;
8b5933c3 1726
8bf36862 1727 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
8b5933c3 1728 return -EOPNOTSUPP;
1729
1730 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1731 return -EFAULT;
1732
8bf36862
KJ		 1733 dev->ethtool_ops->get_channels(dev, &max);
1734
1735 /* ensure new counts are within the maximums */
1736 if ((channels.rx_count > max.max_rx) ||
1737 (channels.tx_count > max.max_tx) ||
1738 (channels.combined_count > max.max_combined) ||
1739 (channels.other_count > max.max_other))
1740 return -EINVAL;
1741
d4ab4286
KJ		 1742 /* ensure the new Rx count fits within the configured Rx flow
1743 * indirection table settings */
1744 if (netif_is_rxfh_configured(dev) &&
1745 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1746 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1747 return -EINVAL;
1748
8b5933c3 1749 return dev->ethtool_ops->set_channels(dev, &channels);
1750}
1751
1da177e4
LT		 1752static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1753{
1754 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1755
1756 if (!dev->ethtool_ops->get_pauseparam)
1757 return -EOPNOTSUPP;
1758
1759 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1760
1761 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1762 return -EFAULT;
1763 return 0;
1764}
1765
1766static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1767{
1768 struct ethtool_pauseparam pauseparam;
1769
e1b90c41 1770 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1771 return -EOPNOTSUPP;
1772
1773 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1774 return -EFAULT;
1775
1776 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1777}
1778
1da177e4
LT		 1779static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1780{
1781 struct ethtool_test test;
76fd8593 1782 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1783 u64 *data;
ff03d49f 1784 int ret, test_len;
1da177e4 1785
a9828ec6 1786 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1787 return -EOPNOTSUPP;
1788
a9828ec6 1789 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1790 if (test_len < 0)
1791 return test_len;
1792 WARN_ON(test_len == 0);
1793
1da177e4
LT		 1794 if (copy_from_user(&test, useraddr, sizeof(test)))
1795 return -EFAULT;
1796
ff03d49f
JG		 1797 test.len = test_len;
1798 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1799 if (!data)
1800 return -ENOMEM;
1801
1802 ops->self_test(dev, &test, data);
1803
1804 ret = -EFAULT;
1805 if (copy_to_user(useraddr, &test, sizeof(test)))
1806 goto out;
1807 useraddr += sizeof(test);
1808 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1809 goto out;
1810 ret = 0;
1811
1812 out:
1813 kfree(data);
1814 return ret;
1815}
1816
1817static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1818{
1819 struct ethtool_gstrings gstrings;
1da177e4
LT		 1820 u8 *data;
1821 int ret;
1822
1da177e4
LT		 1823 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1824 return -EFAULT;
1825
340ae165 1826 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1827 if (ret < 0)
1828 return ret;
4d1ceea8
AS		 1829 if (ret > S32_MAX / ETH_GSTRING_LEN)
1830 return -ENOMEM;
1831 WARN_ON_ONCE(!ret);
a9828ec6
BH		 1832
1833 gstrings.len = ret;
4d1ceea8
AS		 1834 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1835 if (gstrings.len && !data)
1da177e4
LT		 1836 return -ENOMEM;
1837
340ae165 1838 __ethtool_get_strings(dev, gstrings.string_set, data);
1da177e4
LT		 1839
1840 ret = -EFAULT;
1841 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1842 goto out;
1843 useraddr += sizeof(gstrings);
4d1ceea8
AS		 1844 if (gstrings.len &&
1845 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1da177e4
LT		 1846 goto out;
1847 ret = 0;
1848
340ae165 1849out:
4d1ceea8 1850 vfree(data);
1da177e4
LT		 1851 return ret;
1852}
1853
1854static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1855{
1856 struct ethtool_value id;
68f512f2 1857 static bool busy;
c03a14e8 1858 const struct ethtool_ops *ops = dev->ethtool_ops;
68f512f2 1859 int rc;
1da177e4 1860
c03a14e8 1861 if (!ops->set_phys_id)
1da177e4
LT		 1862 return -EOPNOTSUPP;
1863
68f512f2
BH		 1864 if (busy)
1865 return -EBUSY;
1866
1da177e4
LT		 1867 if (copy_from_user(&id, useraddr, sizeof(id)))
1868 return -EFAULT;
1869
c03a14e8 1870 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1871 if (rc < 0)
68f512f2
BH		 1872 return rc;
1873
1874 /* Drop the RTNL lock while waiting, but prevent reentry or
1875 * removal of the device.
1876 */
1877 busy = true;
1878 dev_hold(dev);
1879 rtnl_unlock();
1880
1881 if (rc == 0) {
1882 /* Driver will handle this itself */
1883 schedule_timeout_interruptible(
143780c6 1884 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1885 } else {
fce55922
AB		 1886 /* Driver expects to be called at twice the frequency in rc */
1887 int n = rc * 2, i, interval = HZ / n;
1888
1889 /* Count down seconds */
68f512f2 1890 do {
fce55922
AB		 1891 /* Count down iterations per second */
1892 i = n;
1893 do {
1894 rtnl_lock();
c03a14e8 1895 rc = ops->set_phys_id(dev,
fce55922
AB		 1896 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1897 rtnl_unlock();
1898 if (rc)
1899 break;
1900 schedule_timeout_interruptible(interval);
1901 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1902 } while (!signal_pending(current) &&
1903 (id.data == 0 || --id.data != 0));
1904 }
1905
1906 rtnl_lock();
1907 dev_put(dev);
1908 busy = false;
1909
c03a14e8 1910 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 1911 return rc;
1da177e4
LT		 1912}
1913
1914static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1915{
1916 struct ethtool_stats stats;
76fd8593 1917 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1918 u64 *data;
ff03d49f 1919 int ret, n_stats;
1da177e4 1920
a9828ec6 1921 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1922 return -EOPNOTSUPP;
1923
a9828ec6 1924 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1925 if (n_stats < 0)
1926 return n_stats;
4d1ceea8
AS		 1927 if (n_stats > S32_MAX / sizeof(u64))
1928 return -ENOMEM;
1929 WARN_ON_ONCE(!n_stats);
1da177e4
LT		 1930 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1931 return -EFAULT;
1932
ff03d49f 1933 stats.n_stats = n_stats;
4d1ceea8
AS		 1934 data = vzalloc(n_stats * sizeof(u64));
1935 if (n_stats && !data)
1da177e4
LT		 1936 return -ENOMEM;
1937
1938 ops->get_ethtool_stats(dev, &stats, data);
1939
1940 ret = -EFAULT;
1941 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1942 goto out;
1943 useraddr += sizeof(stats);
4d1ceea8 1944 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1da177e4
LT		 1945 goto out;
1946 ret = 0;
1947
1948 out:
4d1ceea8 1949 vfree(data);
1da177e4
LT		 1950 return ret;
1951}
1952
f3a40945
AL		 1953static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1954{
1955 struct ethtool_stats stats;
1956 struct phy_device *phydev = dev->phydev;
1957 u64 *data;
1958 int ret, n_stats;
1959
1960 if (!phydev)
1961 return -EOPNOTSUPP;
1962
1963 n_stats = phy_get_sset_count(phydev);
f3a40945
AL		 1964 if (n_stats < 0)
1965 return n_stats;
4d1ceea8
AS		 1966 if (n_stats > S32_MAX / sizeof(u64))
1967 return -ENOMEM;
1968 WARN_ON_ONCE(!n_stats);
f3a40945
AL		 1969
1970 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1971 return -EFAULT;
1972
1973 stats.n_stats = n_stats;
4d1ceea8
AS		 1974 data = vzalloc(n_stats * sizeof(u64));
1975 if (n_stats && !data)
f3a40945
AL		 1976 return -ENOMEM;
1977
1978 mutex_lock(&phydev->lock);
1979 phydev->drv->get_stats(phydev, &stats, data);
1980 mutex_unlock(&phydev->lock);
1981
1982 ret = -EFAULT;
1983 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1984 goto out;
1985 useraddr += sizeof(stats);
4d1ceea8 1986 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
f3a40945
AL		 1987 goto out;
1988 ret = 0;
1989
1990 out:
4d1ceea8 1991 vfree(data);
f3a40945
AL		 1992 return ret;
1993}
1994
0bf0519d 1995static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1996{
1997 struct ethtool_perm_addr epaddr;
a6f9a705 1998
313674af 1999 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 2000 return -EFAULT;
2001
313674af
MW		 2002 if (epaddr.size < dev->addr_len)
2003 return -ETOOSMALL;
2004 epaddr.size = dev->addr_len;
a6f9a705 2005
a6f9a705 2006 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 2007 return -EFAULT;
a6f9a705 2008 useraddr += sizeof(epaddr);
313674af
MW		 2009 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2010 return -EFAULT;
2011 return 0;
a6f9a705
JW		 2012}
2013
13c99b24
JG		 2014static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2015 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 2016{
8e557421 2017 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 2018
13c99b24 2019 if (!actor)
3ae7c0b2
JG		 2020 return -EOPNOTSUPP;
2021
13c99b24 2022 edata.data = actor(dev);
3ae7c0b2
JG		 2023
2024 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2025 return -EFAULT;
2026 return 0;
2027}
2028
13c99b24
JG		 2029static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2030 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 2031{
2032 struct ethtool_value edata;
2033
13c99b24 2034 if (!actor)
3ae7c0b2
JG		 2035 return -EOPNOTSUPP;
2036
2037 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2038 return -EFAULT;
2039
13c99b24 2040 actor(dev, edata.data);
339bf024
JG		 2041 return 0;
2042}
2043
13c99b24
JG		 2044static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2045 int (*actor)(struct net_device *, u32))
339bf024
JG		 2046{
2047 struct ethtool_value edata;
2048
13c99b24 2049 if (!actor)
339bf024
JG		 2050 return -EOPNOTSUPP;
2051
2052 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2053 return -EFAULT;
2054
13c99b24 2055 return actor(dev, edata.data);
339bf024
JG		 2056}
2057
97f8aefb 2058static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2059 char __user *useraddr)
05c6a8d7
AK		 2060{
2061 struct ethtool_flash efl;
2062
2063 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2064 return -EFAULT;
2065
2066 if (!dev->ethtool_ops->flash_device)
2067 return -EOPNOTSUPP;
2068
786f5281
BH		 2069 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2070
05c6a8d7
AK		 2071 return dev->ethtool_ops->flash_device(dev, &efl);
2072}
2073
29dd54b7
AC		 2074static int ethtool_set_dump(struct net_device *dev,
2075 void __user *useraddr)
2076{
2077 struct ethtool_dump dump;
2078
2079 if (!dev->ethtool_ops->set_dump)
2080 return -EOPNOTSUPP;
2081
2082 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2083 return -EFAULT;
2084
2085 return dev->ethtool_ops->set_dump(dev, &dump);
2086}
2087
2088static int ethtool_get_dump_flag(struct net_device *dev,
2089 void __user *useraddr)
2090{
2091 int ret;
2092 struct ethtool_dump dump;
2093 const struct ethtool_ops *ops = dev->ethtool_ops;
2094
c03a14e8 2095 if (!ops->get_dump_flag)
29dd54b7
AC		 2096 return -EOPNOTSUPP;
2097
2098 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2099 return -EFAULT;
2100
2101 ret = ops->get_dump_flag(dev, &dump);
2102 if (ret)
2103 return ret;
2104
2105 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2106 return -EFAULT;
2107 return 0;
2108}
2109
2110static int ethtool_get_dump_data(struct net_device *dev,
2111 void __user *useraddr)
2112{
2113 int ret;
2114 __u32 len;
2115 struct ethtool_dump dump, tmp;
2116 const struct ethtool_ops *ops = dev->ethtool_ops;
2117 void *data = NULL;
2118
c03a14e8 2119 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 2120 return -EOPNOTSUPP;
2121
2122 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2123 return -EFAULT;
2124
2125 memset(&tmp, 0, sizeof(tmp));
2126 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2127 ret = ops->get_dump_flag(dev, &tmp);
2128 if (ret)
2129 return ret;
2130
c590b5e2 2131 len = min(tmp.len, dump.len);
29dd54b7
AC		 2132 if (!len)
2133 return -EFAULT;
2134
c590b5e2
MS		 2135 /* Don't ever let the driver think there's more space available
2136 * than it requested with .get_dump_flag().
2137 */
2138 dump.len = len;
2139
2140 /* Always allocate enough space to hold the whole thing so that the
2141 * driver does not need to check the length and bother with partial
2142 * dumping.
2143 */
29dd54b7
AC		 2144 data = vzalloc(tmp.len);
2145 if (!data)
2146 return -ENOMEM;
2147 ret = ops->get_dump_data(dev, &dump, data);
2148 if (ret)
2149 goto out;
2150
c590b5e2
MS		 2151 /* There are two sane possibilities:
2152 * 1. The driver's .get_dump_data() does not touch dump.len.
2153 * 2. Or it may set dump.len to how much it really writes, which
2154 * should be tmp.len (or len if it can do a partial dump).
2155 * In any case respond to userspace with the actual length of data
2156 * it's receiving.
2157 */
2158 WARN_ON(dump.len != len && dump.len != tmp.len);
2159 dump.len = len;
2160
29dd54b7
AC		 2161 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2162 ret = -EFAULT;
2163 goto out;
2164 }
2165 useraddr += offsetof(struct ethtool_dump, data);
2166 if (copy_to_user(useraddr, data, len))
2167 ret = -EFAULT;
2168out:
2169 vfree(data);
2170 return ret;
2171}
2172
c8f3a8c3
RC		 2173static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2174{
2175 int err = 0;
2176 struct ethtool_ts_info info;
2177 const struct ethtool_ops *ops = dev->ethtool_ops;
2178 struct phy_device *phydev = dev->phydev;
2179
2180 memset(&info, 0, sizeof(info));
2181 info.cmd = ETHTOOL_GET_TS_INFO;
2182
2183 if (phydev && phydev->drv && phydev->drv->ts_info) {
c8f3a8c3 2184 err = phydev->drv->ts_info(phydev, &info);
c03a14e8 2185 } else if (ops->get_ts_info) {
c8f3a8c3 2186 err = ops->get_ts_info(dev, &info);
c8f3a8c3
RC		 2187 } else {
2188 info.so_timestamping =
2189 SOF_TIMESTAMPING_RX_SOFTWARE |
2190 SOF_TIMESTAMPING_SOFTWARE;
2191 info.phc_index = -1;
2192 }
2193
2194 if (err)
2195 return err;
2196
2197 if (copy_to_user(useraddr, &info, sizeof(info)))
2198 err = -EFAULT;
2199
2200 return err;
2201}
2202
2f438366
ES		 2203static int __ethtool_get_module_info(struct net_device *dev,
2204 struct ethtool_modinfo *modinfo)
2205{
2206 const struct ethtool_ops *ops = dev->ethtool_ops;
2207 struct phy_device *phydev = dev->phydev;
2208
2209 if (phydev && phydev->drv && phydev->drv->module_info)
2210 return phydev->drv->module_info(phydev, modinfo);
2211
2212 if (ops->get_module_info)
2213 return ops->get_module_info(dev, modinfo);
2214
2215 return -EOPNOTSUPP;
2216}
2217
41c3cb6d
SH		 2218static int ethtool_get_module_info(struct net_device *dev,
2219 void __user *useraddr)
2220{
2221 int ret;
2222 struct ethtool_modinfo modinfo;
41c3cb6d
SH		 2223
2224 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2225 return -EFAULT;
2226
2f438366 2227 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2228 if (ret)
2229 return ret;
2230
2231 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2232 return -EFAULT;
2233
2234 return 0;
2235}
2236
2f438366
ES		 2237static int __ethtool_get_module_eeprom(struct net_device *dev,
2238 struct ethtool_eeprom *ee, u8 *data)
2239{
2240 const struct ethtool_ops *ops = dev->ethtool_ops;
2241 struct phy_device *phydev = dev->phydev;
2242
2243 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2244 return phydev->drv->module_eeprom(phydev, ee, data);
2245
2246 if (ops->get_module_eeprom)
2247 return ops->get_module_eeprom(dev, ee, data);
2248
2249 return -EOPNOTSUPP;
2250}
2251
41c3cb6d
SH		 2252static int ethtool_get_module_eeprom(struct net_device *dev,
2253 void __user *useraddr)
2254{
2255 int ret;
2256 struct ethtool_modinfo modinfo;
41c3cb6d 2257
2f438366 2258 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2259 if (ret)
2260 return ret;
2261
2f438366
ES		 2262 return ethtool_get_any_eeprom(dev, useraddr,
2263 __ethtool_get_module_eeprom,
41c3cb6d
SH		 2264 modinfo.eeprom_len);
2265}
2266
f0db9b07
GV		 2267static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2268{
2269 switch (tuna->id) {
2270 case ETHTOOL_RX_COPYBREAK:
1255a505 2271 case ETHTOOL_TX_COPYBREAK:
f0db9b07
GV		 2272 if (tuna->len != sizeof(u32) ||
2273 tuna->type_id != ETHTOOL_TUNABLE_U32)
2274 return -EINVAL;
2275 break;
2276 default:
2277 return -EINVAL;
2278 }
2279
2280 return 0;
2281}
2282
2283static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2284{
2285 int ret;
2286 struct ethtool_tunable tuna;
2287 const struct ethtool_ops *ops = dev->ethtool_ops;
2288 void *data;
2289
2290 if (!ops->get_tunable)
2291 return -EOPNOTSUPP;
2292 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2293 return -EFAULT;
2294 ret = ethtool_tunable_valid(&tuna);
2295 if (ret)
2296 return ret;
2297 data = kmalloc(tuna.len, GFP_USER);
2298 if (!data)
2299 return -ENOMEM;
2300 ret = ops->get_tunable(dev, &tuna, data);
2301 if (ret)
2302 goto out;
2303 useraddr += sizeof(tuna);
2304 ret = -EFAULT;
2305 if (copy_to_user(useraddr, data, tuna.len))
2306 goto out;
2307 ret = 0;
2308
2309out:
2310 kfree(data);
2311 return ret;
2312}
2313
2314static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2315{
2316 int ret;
2317 struct ethtool_tunable tuna;
2318 const struct ethtool_ops *ops = dev->ethtool_ops;
2319 void *data;
2320
2321 if (!ops->set_tunable)
2322 return -EOPNOTSUPP;
2323 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2324 return -EFAULT;
2325 ret = ethtool_tunable_valid(&tuna);
2326 if (ret)
2327 return ret;
f0db9b07 2328 useraddr += sizeof(tuna);
30e7e3ec
AV		 2329 data = memdup_user(useraddr, tuna.len);
2330 if (IS_ERR(data))
2331 return PTR_ERR(data);
f0db9b07
GV		 2332 ret = ops->set_tunable(dev, &tuna, data);
2333
f0db9b07
GV		 2334 kfree(data);
2335 return ret;
2336}
2337
421797b1
KL		 2338static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2339 void __user *useraddr,
2340 struct ethtool_per_queue_op *per_queue_opt)
2341{
2342 u32 bit;
2343 int ret;
2344 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2345
2346 if (!dev->ethtool_ops->get_per_queue_coalesce)
2347 return -EOPNOTSUPP;
2348
2349 useraddr += sizeof(*per_queue_opt);
2350
2351 bitmap_from_u32array(queue_mask,
2352 MAX_NUM_QUEUE,
2353 per_queue_opt->queue_mask,
2354 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2355
2356 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2357 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2358
2359 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2360 if (ret != 0)
2361 return ret;
2362 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2363 return -EFAULT;
2364 useraddr += sizeof(coalesce);
2365 }
2366
2367 return 0;
2368}
2369
f38d138a
KL		 2370static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2371 void __user *useraddr,
2372 struct ethtool_per_queue_op *per_queue_opt)
2373{
2374 u32 bit;
2375 int i, ret = 0;
2376 int n_queue;
2377 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2378 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2379
2380 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2381 (!dev->ethtool_ops->get_per_queue_coalesce))
2382 return -EOPNOTSUPP;
2383
2384 useraddr += sizeof(*per_queue_opt);
2385
2386 bitmap_from_u32array(queue_mask,
2387 MAX_NUM_QUEUE,
2388 per_queue_opt->queue_mask,
2389 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2390 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2391 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2392 if (!backup)
2393 return -ENOMEM;
2394
2395 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2396 struct ethtool_coalesce coalesce;
2397
2398 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2399 if (ret != 0)
2400 goto roll_back;
2401
2402 tmp++;
2403
2404 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2405 ret = -EFAULT;
2406 goto roll_back;
2407 }
2408
2409 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2410 if (ret != 0)
2411 goto roll_back;
2412
2413 useraddr += sizeof(coalesce);
2414 }
2415
2416roll_back:
2417 if (ret != 0) {
2418 tmp = backup;
2419 for_each_set_bit(i, queue_mask, bit) {
2420 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2421 tmp++;
2422 }
2423 }
2424 kfree(backup);
2425
2426 return ret;
2427}
2428
ac2c7ad0
KL		 2429static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2430{
2431 struct ethtool_per_queue_op per_queue_opt;
2432
2433 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2434 return -EFAULT;
2435
2436 switch (per_queue_opt.sub_command) {
421797b1
KL		 2437 case ETHTOOL_GCOALESCE:
2438 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
f38d138a
KL		 2439 case ETHTOOL_SCOALESCE:
2440 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
ac2c7ad0
KL		 2441 default:
2442 return -EOPNOTSUPP;
2443 };
2444}
2445
968ad9da
RL		 2446static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2447{
2448 switch (tuna->id) {
65feddd5
RL		 2449 case ETHTOOL_PHY_DOWNSHIFT:
2450 if (tuna->len != sizeof(u8) ||
2451 tuna->type_id != ETHTOOL_TUNABLE_U8)
2452 return -EINVAL;
2453 break;
968ad9da
RL		 2454 default:
2455 return -EINVAL;
2456 }
2457
2458 return 0;
2459}
2460
2461static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2462{
2463 int ret;
2464 struct ethtool_tunable tuna;
2465 struct phy_device *phydev = dev->phydev;
2466 void *data;
2467
2468 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2469 return -EOPNOTSUPP;
2470
2471 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2472 return -EFAULT;
2473 ret = ethtool_phy_tunable_valid(&tuna);
2474 if (ret)
2475 return ret;
2476 data = kmalloc(tuna.len, GFP_USER);
2477 if (!data)
2478 return -ENOMEM;
4b65246b 2479 mutex_lock(&phydev->lock);
968ad9da 2480 ret = phydev->drv->get_tunable(phydev, &tuna, data);
4b65246b 2481 mutex_unlock(&phydev->lock);
968ad9da
RL		 2482 if (ret)
2483 goto out;
2484 useraddr += sizeof(tuna);
2485 ret = -EFAULT;
2486 if (copy_to_user(useraddr, data, tuna.len))
2487 goto out;
2488 ret = 0;
2489
2490out:
2491 kfree(data);
2492 return ret;
2493}
2494
2495static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2496{
2497 int ret;
2498 struct ethtool_tunable tuna;
2499 struct phy_device *phydev = dev->phydev;
2500 void *data;
2501
2502 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2503 return -EOPNOTSUPP;
2504 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2505 return -EFAULT;
2506 ret = ethtool_phy_tunable_valid(&tuna);
2507 if (ret)
2508 return ret;
968ad9da 2509 useraddr += sizeof(tuna);
30e7e3ec
AV		 2510 data = memdup_user(useraddr, tuna.len);
2511 if (IS_ERR(data))
2512 return PTR_ERR(data);
4b65246b 2513 mutex_lock(&phydev->lock);
968ad9da 2514 ret = phydev->drv->set_tunable(phydev, &tuna, data);
4b65246b 2515 mutex_unlock(&phydev->lock);
968ad9da 2516
968ad9da
RL		 2517 kfree(data);
2518 return ret;
2519}
2520
1a5f3da2
VSR		 2521static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2522{
2523 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2524
2525 if (!dev->ethtool_ops->get_fecparam)
2526 return -EOPNOTSUPP;
2527
2528 dev->ethtool_ops->get_fecparam(dev, &fecparam);
2529
2530 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2531 return -EFAULT;
2532 return 0;
2533}
2534
2535static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2536{
2537 struct ethtool_fecparam fecparam;
2538
2539 if (!dev->ethtool_ops->set_fecparam)
2540 return -EOPNOTSUPP;
2541
2542 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2543 return -EFAULT;
2544
2545 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2546}
2547
600fed5e 2548/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 2549
881d966b 2550int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 2551{
881d966b 2552 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4 2553 void __user *useraddr = ifr->ifr_data;
ac2c7ad0 2554 u32 ethcmd, sub_cmd;
1da177e4 2555 int rc;
b29d3145 2556 netdev_features_t old_features;
1da177e4 2557
1da177e4
LT		 2558 if (!dev || !netif_device_present(dev))
2559 return -ENODEV;
2560
97f8aefb 2561 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 2562 return -EFAULT;
2563
ac2c7ad0
KL		 2564 if (ethcmd == ETHTOOL_PERQUEUE) {
2565 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2566 return -EFAULT;
2567 } else {
2568 sub_cmd = ethcmd;
2569 }
75f3123c 2570 /* Allow some commands to be done by anyone */
ac2c7ad0 2571 switch (sub_cmd) {
0fdc100b 2572 case ETHTOOL_GSET:
75f3123c 2573 case ETHTOOL_GDRVINFO:
75f3123c 2574 case ETHTOOL_GMSGLVL:
2da45db2 2575 case ETHTOOL_GLINK:
75f3123c
SH		 2576 case ETHTOOL_GCOALESCE:
2577 case ETHTOOL_GRINGPARAM:
2578 case ETHTOOL_GPAUSEPARAM:
2579 case ETHTOOL_GRXCSUM:
2580 case ETHTOOL_GTXCSUM:
2581 case ETHTOOL_GSG:
f80400a2 2582 case ETHTOOL_GSSET_INFO:
75f3123c 2583 case ETHTOOL_GSTRINGS:
2da45db2 2584 case ETHTOOL_GSTATS:
f3a40945 2585 case ETHTOOL_GPHYSTATS:
75f3123c
SH		 2586 case ETHTOOL_GTSO:
2587 case ETHTOOL_GPERMADDR:
75f3123c 2588 case ETHTOOL_GGSO:
1cab819b 2589 case ETHTOOL_GGRO:
339bf024
JG		 2590 case ETHTOOL_GFLAGS:
2591 case ETHTOOL_GPFLAGS:
0853ad66 2592 case ETHTOOL_GRXFH:
59089d8d
SB		 2593 case ETHTOOL_GRXRINGS:
2594 case ETHTOOL_GRXCLSRLCNT:
2595 case ETHTOOL_GRXCLSRULE:
2596 case ETHTOOL_GRXCLSRLALL:
2da45db2 2597 case ETHTOOL_GRXFHINDIR:
3de0b592 2598 case ETHTOOL_GRSSH:
5455c699 2599 case ETHTOOL_GFEATURES:
2da45db2 2600 case ETHTOOL_GCHANNELS:
c8f3a8c3 2601 case ETHTOOL_GET_TS_INFO:
2da45db2 2602 case ETHTOOL_GEEE:
f0db9b07 2603 case ETHTOOL_GTUNABLE:
968ad9da 2604 case ETHTOOL_PHY_GTUNABLE:
8006f6bf 2605 case ETHTOOL_GLINKSETTINGS:
1a5f3da2 2606 case ETHTOOL_GFECPARAM:
75f3123c
SH		 2607 break;
2608 default:
5e1fccc0 2609 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 2610 return -EPERM;
2611 }
2612
97f8aefb 2613 if (dev->ethtool_ops->begin) {
2614 rc = dev->ethtool_ops->begin(dev);
2615 if (rc < 0)
1da177e4 2616 return rc;
97f8aefb 2617 }
d8a33ac4
SH		 2618 old_features = dev->features;
2619
1da177e4
LT		 2620 switch (ethcmd) {
2621 case ETHTOOL_GSET:
2622 rc = ethtool_get_settings(dev, useraddr);
2623 break;
2624 case ETHTOOL_SSET:
2625 rc = ethtool_set_settings(dev, useraddr);
2626 break;
2627 case ETHTOOL_GDRVINFO:
2628 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 2629 break;
2630 case ETHTOOL_GREGS:
2631 rc = ethtool_get_regs(dev, useraddr);
2632 break;
2633 case ETHTOOL_GWOL:
2634 rc = ethtool_get_wol(dev, useraddr);
2635 break;
2636 case ETHTOOL_SWOL:
2637 rc = ethtool_set_wol(dev, useraddr);
2638 break;
2639 case ETHTOOL_GMSGLVL:
13c99b24
JG		 2640 rc = ethtool_get_value(dev, useraddr, ethcmd,
2641 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 2642 break;
2643 case ETHTOOL_SMSGLVL:
13c99b24
JG		 2644 rc = ethtool_set_value_void(dev, useraddr,
2645 dev->ethtool_ops->set_msglevel);
1da177e4 2646 break;
80f12ecc
YM		 2647 case ETHTOOL_GEEE:
2648 rc = ethtool_get_eee(dev, useraddr);
2649 break;
2650 case ETHTOOL_SEEE:
2651 rc = ethtool_set_eee(dev, useraddr);
2652 break;
1da177e4
LT		 2653 case ETHTOOL_NWAY_RST:
2654 rc = ethtool_nway_reset(dev);
2655 break;
2656 case ETHTOOL_GLINK:
e596e6e4 2657 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 2658 break;
2659 case ETHTOOL_GEEPROM:
2660 rc = ethtool_get_eeprom(dev, useraddr);
2661 break;
2662 case ETHTOOL_SEEPROM:
2663 rc = ethtool_set_eeprom(dev, useraddr);
2664 break;
2665 case ETHTOOL_GCOALESCE:
2666 rc = ethtool_get_coalesce(dev, useraddr);
2667 break;
2668 case ETHTOOL_SCOALESCE:
2669 rc = ethtool_set_coalesce(dev, useraddr);
2670 break;
2671 case ETHTOOL_GRINGPARAM:
2672 rc = ethtool_get_ringparam(dev, useraddr);
2673 break;
2674 case ETHTOOL_SRINGPARAM:
2675 rc = ethtool_set_ringparam(dev, useraddr);
2676 break;
2677 case ETHTOOL_GPAUSEPARAM:
2678 rc = ethtool_get_pauseparam(dev, useraddr);
2679 break;
2680 case ETHTOOL_SPAUSEPARAM:
2681 rc = ethtool_set_pauseparam(dev, useraddr);
2682 break;
1da177e4
LT		 2683 case ETHTOOL_TEST:
2684 rc = ethtool_self_test(dev, useraddr);
2685 break;
2686 case ETHTOOL_GSTRINGS:
2687 rc = ethtool_get_strings(dev, useraddr);
2688 break;
2689 case ETHTOOL_PHYS_ID:
2690 rc = ethtool_phys_id(dev, useraddr);
2691 break;
2692 case ETHTOOL_GSTATS:
2693 rc = ethtool_get_stats(dev, useraddr);
2694 break;
a6f9a705
JW		 2695 case ETHTOOL_GPERMADDR:
2696 rc = ethtool_get_perm_addr(dev, useraddr);
2697 break;
3ae7c0b2 2698 case ETHTOOL_GFLAGS:
13c99b24 2699 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 2700 __ethtool_get_flags);
3ae7c0b2
JG		 2701 break;
2702 case ETHTOOL_SFLAGS:
da8ac86c 2703 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 2704 break;
339bf024 2705 case ETHTOOL_GPFLAGS:
13c99b24
JG		 2706 rc = ethtool_get_value(dev, useraddr, ethcmd,
2707 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 2708 break;
2709 case ETHTOOL_SPFLAGS:
13c99b24
JG		 2710 rc = ethtool_set_value(dev, useraddr,
2711 dev->ethtool_ops->set_priv_flags);
339bf024 2712 break;
0853ad66 2713 case ETHTOOL_GRXFH:
59089d8d
SB		 2714 case ETHTOOL_GRXRINGS:
2715 case ETHTOOL_GRXCLSRLCNT:
2716 case ETHTOOL_GRXCLSRULE:
2717 case ETHTOOL_GRXCLSRLALL:
bf988435 2718 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 2719 break;
2720 case ETHTOOL_SRXFH:
59089d8d
SB		 2721 case ETHTOOL_SRXCLSRLDEL:
2722 case ETHTOOL_SRXCLSRLINS:
bf988435 2723 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 2724 break;
05c6a8d7
AK		 2725 case ETHTOOL_FLASHDEV:
2726 rc = ethtool_flash_device(dev, useraddr);
2727 break;
d73d3a8c
BH		 2728 case ETHTOOL_RESET:
2729 rc = ethtool_reset(dev, useraddr);
2730 break;
723b2f57
JG		 2731 case ETHTOOL_GSSET_INFO:
2732 rc = ethtool_get_sset_info(dev, useraddr);
2733 break;
a5b6ee29
BH		 2734 case ETHTOOL_GRXFHINDIR:
2735 rc = ethtool_get_rxfh_indir(dev, useraddr);
2736 break;
2737 case ETHTOOL_SRXFHINDIR:
2738 rc = ethtool_set_rxfh_indir(dev, useraddr);
2739 break;
3de0b592
VD		 2740 case ETHTOOL_GRSSH:
2741 rc = ethtool_get_rxfh(dev, useraddr);
2742 break;
2743 case ETHTOOL_SRSSH:
2744 rc = ethtool_set_rxfh(dev, useraddr);
2745 break;
5455c699
MM		 2746 case ETHTOOL_GFEATURES:
2747 rc = ethtool_get_features(dev, useraddr);
2748 break;
2749 case ETHTOOL_SFEATURES:
2750 rc = ethtool_set_features(dev, useraddr);
2751 break;
0a417704 2752 case ETHTOOL_GTXCSUM:
e83d360d 2753 case ETHTOOL_GRXCSUM:
0a417704
MM		 2754 case ETHTOOL_GSG:
2755 case ETHTOOL_GTSO:
0a417704
MM		 2756 case ETHTOOL_GGSO:
2757 case ETHTOOL_GGRO:
2758 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2759 break;
2760 case ETHTOOL_STXCSUM:
e83d360d 2761 case ETHTOOL_SRXCSUM:
0a417704
MM		 2762 case ETHTOOL_SSG:
2763 case ETHTOOL_STSO:
0a417704
MM		 2764 case ETHTOOL_SGSO:
2765 case ETHTOOL_SGRO:
2766 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2767 break;
8b5933c3 2768 case ETHTOOL_GCHANNELS:
2769 rc = ethtool_get_channels(dev, useraddr);
2770 break;
2771 case ETHTOOL_SCHANNELS:
2772 rc = ethtool_set_channels(dev, useraddr);
2773 break;
29dd54b7
AC		 2774 case ETHTOOL_SET_DUMP:
2775 rc = ethtool_set_dump(dev, useraddr);
2776 break;
2777 case ETHTOOL_GET_DUMP_FLAG:
2778 rc = ethtool_get_dump_flag(dev, useraddr);
2779 break;
2780 case ETHTOOL_GET_DUMP_DATA:
2781 rc = ethtool_get_dump_data(dev, useraddr);
2782 break;
c8f3a8c3
RC		 2783 case ETHTOOL_GET_TS_INFO:
2784 rc = ethtool_get_ts_info(dev, useraddr);
2785 break;
41c3cb6d
SH		 2786 case ETHTOOL_GMODULEINFO:
2787 rc = ethtool_get_module_info(dev, useraddr);
2788 break;
2789 case ETHTOOL_GMODULEEEPROM:
2790 rc = ethtool_get_module_eeprom(dev, useraddr);
2791 break;
f0db9b07
GV		 2792 case ETHTOOL_GTUNABLE:
2793 rc = ethtool_get_tunable(dev, useraddr);
2794 break;
2795 case ETHTOOL_STUNABLE:
2796 rc = ethtool_set_tunable(dev, useraddr);
2797 break;
f3a40945
AL		 2798 case ETHTOOL_GPHYSTATS:
2799 rc = ethtool_get_phy_stats(dev, useraddr);
2800 break;
ac2c7ad0
KL		 2801 case ETHTOOL_PERQUEUE:
2802 rc = ethtool_set_per_queue(dev, useraddr);
2803 break;
3f1ac7a7
DD		 2804 case ETHTOOL_GLINKSETTINGS:
2805 rc = ethtool_get_link_ksettings(dev, useraddr);
2806 break;
2807 case ETHTOOL_SLINKSETTINGS:
2808 rc = ethtool_set_link_ksettings(dev, useraddr);
2809 break;
968ad9da
RL		 2810 case ETHTOOL_PHY_GTUNABLE:
2811 rc = get_phy_tunable(dev, useraddr);
2812 break;
2813 case ETHTOOL_PHY_STUNABLE:
2814 rc = set_phy_tunable(dev, useraddr);
2815 break;
1a5f3da2
VSR		 2816 case ETHTOOL_GFECPARAM:
2817 rc = ethtool_get_fecparam(dev, useraddr);
2818 break;
2819 case ETHTOOL_SFECPARAM:
2820 rc = ethtool_set_fecparam(dev, useraddr);
2821 break;
1da177e4 2822 default:
61a44b9c 2823 rc = -EOPNOTSUPP;
1da177e4 2824 }
4ec93edb 2825
e71a4783 2826 if (dev->ethtool_ops->complete)
1da177e4 2827 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 2828
2829 if (old_features != dev->features)
2830 netdev_features_change(dev);
2831
1da177e4 2832 return rc;
1da177e4 2833}
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