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net: phy: phylink: Provide PHY interface to mac_link_{up, down}
[mirror_ubuntu-hirsute-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",
fb1f5f79 76 [NETIF_F_GRO_HW_BIT] = "rx-gro-hw",
9d921549
MM		 77 [NETIF_F_LRO_BIT] = "rx-lro",
78
79 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
9d921549
MM		 80 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
81 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
cbc53e08 82 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
9d921549
MM		 83 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
84 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
68c33163 85 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
518f213d 86 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
7e13318d
TH		 87 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
88 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
73136267 89 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
518f213d 90 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
802ab55a 91 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
90017acc 92 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
c7ef8f0c 93 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
9d921549
MM		 94
95 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
53692b1d 96 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
9d921549
MM		 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",
36eabda3 103 [NETIF_F_RXFCS_BIT] = "rx-fcs",
5e0c03c8 104 [NETIF_F_RXALL_BIT] = "rx-all",
a6cc0cfa 105 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
1c78c64e 106 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
c7ef8f0c
SK		 107 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
108 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
d764a122 109 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
9d921549
MM		 110};
111
892311f6
EP		 112static const char
113rss_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",
abb521e3 116 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
892311f6
EP		 117};
118
a4244b0c
HHZ		 119static const char
120tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
121 [ETHTOOL_ID_UNSPEC] = "Unspec",
122 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
123 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
e1577c1c 124 [ETHTOOL_PFC_PREVENTION_TOUT] = "pfc-prevention-tout",
a4244b0c
HHZ		 125};
126
968ad9da
RL		 127static const char
128phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
129 [ETHTOOL_ID_UNSPEC] = "Unspec",
65feddd5 130 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
968ad9da
RL		 131};
132
5455c699
MM		 133static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
134{
135 struct ethtool_gfeatures cmd = {
136 .cmd = ETHTOOL_GFEATURES,
137 .size = ETHTOOL_DEV_FEATURE_WORDS,
138 };
475414f6 139 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 140 u32 __user *sizeaddr;
141 u32 copy_size;
475414f6
MM		 142 int i;
143
144 /* in case feature bits run out again */
09da71b1 145 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 146
147 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 148 features[i].available = (u32)(dev->hw_features >> (32 * i));
149 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
150 features[i].active = (u32)(dev->features >> (32 * i));
151 features[i].never_changed =
152 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 153 }
5455c699
MM		 154
155 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
156 if (get_user(copy_size, sizeaddr))
157 return -EFAULT;
158
159 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
160 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
161
162 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
163 return -EFAULT;
164 useraddr += sizeof(cmd);
165 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
166 return -EFAULT;
167
168 return 0;
169}
170
171static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
172{
173 struct ethtool_sfeatures cmd;
174 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 175 netdev_features_t wanted = 0, valid = 0;
176 int i, ret = 0;
5455c699
MM		 177
178 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
179 return -EFAULT;
180 useraddr += sizeof(cmd);
181
182 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
183 return -EINVAL;
184
185 if (copy_from_user(features, useraddr, sizeof(features)))
186 return -EFAULT;
187
475414f6 188 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 189 valid |= (netdev_features_t)features[i].valid << (32 * i);
190 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 191 }
192
193 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 194 return -EINVAL;
195
475414f6
MM		 196 if (valid & ~dev->hw_features) {
197 valid &= dev->hw_features;
5455c699
MM		 198 ret |= ETHTOOL_F_UNSUPPORTED;
199 }
200
475414f6
MM		 201 dev->wanted_features &= ~valid;
202 dev->wanted_features |= wanted & valid;
6cb6a27c 203 __netdev_update_features(dev);
5455c699 204
475414f6 205 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 206 ret |= ETHTOOL_F_WISH;
207
208 return ret;
209}
210
f3a40945
AL		 211static int phy_get_sset_count(struct phy_device *phydev)
212{
213 int ret;
214
215 if (phydev->drv->get_sset_count &&
216 phydev->drv->get_strings &&
217 phydev->drv->get_stats) {
218 mutex_lock(&phydev->lock);
219 ret = phydev->drv->get_sset_count(phydev);
220 mutex_unlock(&phydev->lock);
221
222 return ret;
223 }
224
225 return -EOPNOTSUPP;
226}
227
340ae165
MM		 228static int __ethtool_get_sset_count(struct net_device *dev, int sset)
229{
230 const struct ethtool_ops *ops = dev->ethtool_ops;
231
5455c699
MM		 232 if (sset == ETH_SS_FEATURES)
233 return ARRAY_SIZE(netdev_features_strings);
234
892311f6
EP		 235 if (sset == ETH_SS_RSS_HASH_FUNCS)
236 return ARRAY_SIZE(rss_hash_func_strings);
237
a4244b0c
HHZ		 238 if (sset == ETH_SS_TUNABLES)
239 return ARRAY_SIZE(tunable_strings);
240
968ad9da
RL		 241 if (sset == ETH_SS_PHY_TUNABLES)
242 return ARRAY_SIZE(phy_tunable_strings);
243
f3a40945
AL		 244 if (sset == ETH_SS_PHY_STATS) {
245 if (dev->phydev)
246 return phy_get_sset_count(dev->phydev);
247 else
248 return -EOPNOTSUPP;
249 }
250
c03a14e8 251 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 252 return ops->get_sset_count(dev, sset);
253 else
254 return -EOPNOTSUPP;
255}
256
257static void __ethtool_get_strings(struct net_device *dev,
258 u32 stringset, u8 *data)
259{
260 const struct ethtool_ops *ops = dev->ethtool_ops;
261
5455c699
MM		 262 if (stringset == ETH_SS_FEATURES)
263 memcpy(data, netdev_features_strings,
264 sizeof(netdev_features_strings));
892311f6
EP		 265 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
266 memcpy(data, rss_hash_func_strings,
267 sizeof(rss_hash_func_strings));
a4244b0c
HHZ		 268 else if (stringset == ETH_SS_TUNABLES)
269 memcpy(data, tunable_strings, sizeof(tunable_strings));
968ad9da
RL		 270 else if (stringset == ETH_SS_PHY_TUNABLES)
271 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
f3a40945
AL		 272 else if (stringset == ETH_SS_PHY_STATS) {
273 struct phy_device *phydev = dev->phydev;
274
275 if (phydev) {
276 mutex_lock(&phydev->lock);
277 phydev->drv->get_strings(phydev, data);
278 mutex_unlock(&phydev->lock);
279 } else {
280 return;
281 }
282 } else
5455c699
MM		 283 /* ops->get_strings is valid because checked earlier */
284 ops->get_strings(dev, stringset, data);
340ae165
MM		 285}
286
c8f44aff 287static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 288{
289 /* feature masks of legacy discrete ethtool ops */
290
291 switch (eth_cmd) {
292 case ETHTOOL_GTXCSUM:
293 case ETHTOOL_STXCSUM:
a188222b 294 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
e83d360d
MM		 295 case ETHTOOL_GRXCSUM:
296 case ETHTOOL_SRXCSUM:
297 return NETIF_F_RXCSUM;
0a417704
MM		 298 case ETHTOOL_GSG:
299 case ETHTOOL_SSG:
300 return NETIF_F_SG;
301 case ETHTOOL_GTSO:
302 case ETHTOOL_STSO:
303 return NETIF_F_ALL_TSO;
0a417704
MM		 304 case ETHTOOL_GGSO:
305 case ETHTOOL_SGSO:
306 return NETIF_F_GSO;
307 case ETHTOOL_GGRO:
308 case ETHTOOL_SGRO:
309 return NETIF_F_GRO;
310 default:
311 BUG();
312 }
313}
314
0a417704
MM		 315static int ethtool_get_one_feature(struct net_device *dev,
316 char __user *useraddr, u32 ethcmd)
317{
c8f44aff 318 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 319 struct ethtool_value edata = {
320 .cmd = ethcmd,
86794881 321 .data = !!(dev->features & mask),
0a417704 322 };
0a417704 323
0a417704
MM		 324 if (copy_to_user(useraddr, &edata, sizeof(edata)))
325 return -EFAULT;
326 return 0;
327}
328
0a417704
MM		 329static int ethtool_set_one_feature(struct net_device *dev,
330 void __user *useraddr, u32 ethcmd)
331{
332 struct ethtool_value edata;
c8f44aff 333 netdev_features_t mask;
0a417704
MM		 334
335 if (copy_from_user(&edata, useraddr, sizeof(edata)))
336 return -EFAULT;
337
86794881
MM		 338 mask = ethtool_get_feature_mask(ethcmd);
339 mask &= dev->hw_features;
bc5787c6
MM		 340 if (!mask)
341 return -EOPNOTSUPP;
86794881 342
bc5787c6
MM		 343 if (edata.data)
344 dev->wanted_features |= mask;
345 else
346 dev->wanted_features &= ~mask;
86794881 347
bc5787c6 348 __netdev_update_features(dev);
86794881 349
bc5787c6
MM		 350 return 0;
351}
352
02b3a552
MM		 353#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
354 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 355#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
356 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
357 NETIF_F_RXHASH)
bc5787c6
MM		 358
359static u32 __ethtool_get_flags(struct net_device *dev)
360{
02b3a552
MM		 361 u32 flags = 0;
362
8a73125c
DF		 363 if (dev->features & NETIF_F_LRO)
364 flags |= ETH_FLAG_LRO;
365 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
366 flags |= ETH_FLAG_RXVLAN;
367 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
368 flags |= ETH_FLAG_TXVLAN;
369 if (dev->features & NETIF_F_NTUPLE)
370 flags |= ETH_FLAG_NTUPLE;
371 if (dev->features & NETIF_F_RXHASH)
372 flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 373
374 return flags;
0a417704
MM		 375}
376
bc5787c6 377static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 378{
c8f44aff 379 netdev_features_t features = 0, changed;
da8ac86c 380
02b3a552 381 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 382 return -EINVAL;
383
8a73125c
DF		 384 if (data & ETH_FLAG_LRO)
385 features |= NETIF_F_LRO;
386 if (data & ETH_FLAG_RXVLAN)
387 features |= NETIF_F_HW_VLAN_CTAG_RX;
388 if (data & ETH_FLAG_TXVLAN)
389 features |= NETIF_F_HW_VLAN_CTAG_TX;
390 if (data & ETH_FLAG_NTUPLE)
391 features |= NETIF_F_NTUPLE;
392 if (data & ETH_FLAG_RXHASH)
393 features |= NETIF_F_RXHASH;
02b3a552 394
da8ac86c 395 /* allow changing only bits set in hw_features */
02b3a552 396 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 397 if (changed & ~dev->hw_features)
398 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
399
400 dev->wanted_features =
02b3a552 401 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 402
6cb6a27c 403 __netdev_update_features(dev);
da8ac86c
MM		 404
405 return 0;
406}
407
5a6cd6de
AB		 408/* Given two link masks, AND them together and save the result in dst. */
409void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
410 struct ethtool_link_ksettings *src)
411{
412 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
413 unsigned int idx = 0;
414
415 for (; idx < size; idx++) {
416 dst->link_modes.supported[idx] &=
417 src->link_modes.supported[idx];
418 dst->link_modes.advertising[idx] &=
419 src->link_modes.advertising[idx];
420 }
421}
422EXPORT_SYMBOL(ethtool_intersect_link_masks);
423
6d62b4d5
PR		 424void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
425 u32 legacy_u32)
3f1ac7a7
DD		 426{
427 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
428 dst[0] = legacy_u32;
429}
6d62b4d5 430EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
3f1ac7a7
DD		 431
432/* return false if src had higher bits set. lower bits always updated. */
6d62b4d5
PR		 433bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
434 const unsigned long *src)
3f1ac7a7
DD		 435{
436 bool retval = true;
437
438 /* TODO: following test will soon always be true */
439 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
440 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
441
442 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
443 bitmap_fill(ext, 32);
444 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
445 if (bitmap_intersects(ext, src,
446 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
447 /* src mask goes beyond bit 31 */
448 retval = false;
449 }
450 }
451 *legacy_u32 = src[0];
452 return retval;
453}
6d62b4d5 454EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
3f1ac7a7
DD		 455
456/* return false if legacy contained non-0 deprecated fields
95491e3c 457 * maxtxpkt/maxrxpkt. rest of ksettings always updated
3f1ac7a7
DD		 458 */
459static bool
460convert_legacy_settings_to_link_ksettings(
461 struct ethtool_link_ksettings *link_ksettings,
462 const struct ethtool_cmd *legacy_settings)
463{
464 bool retval = true;
465
466 memset(link_ksettings, 0, sizeof(*link_ksettings));
467
468 /* This is used to tell users that driver is still using these
469 * deprecated legacy fields, and they should not use
470 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
471 */
95491e3c 472 if (legacy_settings->maxtxpkt ||
3f1ac7a7
DD		 473 legacy_settings->maxrxpkt)
474 retval = false;
475
6d62b4d5 476 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 477 link_ksettings->link_modes.supported,
478 legacy_settings->supported);
6d62b4d5 479 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 480 link_ksettings->link_modes.advertising,
481 legacy_settings->advertising);
6d62b4d5 482 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 483 link_ksettings->link_modes.lp_advertising,
484 legacy_settings->lp_advertising);
485 link_ksettings->base.speed
486 = ethtool_cmd_speed(legacy_settings);
487 link_ksettings->base.duplex
488 = legacy_settings->duplex;
489 link_ksettings->base.port
490 = legacy_settings->port;
491 link_ksettings->base.phy_address
492 = legacy_settings->phy_address;
493 link_ksettings->base.autoneg
494 = legacy_settings->autoneg;
495 link_ksettings->base.mdio_support
496 = legacy_settings->mdio_support;
497 link_ksettings->base.eth_tp_mdix
498 = legacy_settings->eth_tp_mdix;
499 link_ksettings->base.eth_tp_mdix_ctrl
500 = legacy_settings->eth_tp_mdix_ctrl;
501 return retval;
502}
503
504/* return false if ksettings link modes had higher bits
505 * set. legacy_settings always updated (best effort)
506 */
507static bool
508convert_link_ksettings_to_legacy_settings(
509 struct ethtool_cmd *legacy_settings,
510 const struct ethtool_link_ksettings *link_ksettings)
511{
512 bool retval = true;
513
514 memset(legacy_settings, 0, sizeof(*legacy_settings));
515 /* this also clears the deprecated fields in legacy structure:
516 * __u8 transceiver;
517 * __u32 maxtxpkt;
518 * __u32 maxrxpkt;
519 */
520
6d62b4d5 521 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 522 &legacy_settings->supported,
523 link_ksettings->link_modes.supported);
6d62b4d5 524 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 525 &legacy_settings->advertising,
526 link_ksettings->link_modes.advertising);
6d62b4d5 527 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 528 &legacy_settings->lp_advertising,
529 link_ksettings->link_modes.lp_advertising);
530 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
531 legacy_settings->duplex
532 = link_ksettings->base.duplex;
533 legacy_settings->port
534 = link_ksettings->base.port;
535 legacy_settings->phy_address
536 = link_ksettings->base.phy_address;
537 legacy_settings->autoneg
538 = link_ksettings->base.autoneg;
539 legacy_settings->mdio_support
540 = link_ksettings->base.mdio_support;
541 legacy_settings->eth_tp_mdix
542 = link_ksettings->base.eth_tp_mdix;
543 legacy_settings->eth_tp_mdix_ctrl
544 = link_ksettings->base.eth_tp_mdix_ctrl;
19cab887
FF		 545 legacy_settings->transceiver
546 = link_ksettings->base.transceiver;
3f1ac7a7
DD		 547 return retval;
548}
549
550/* number of 32-bit words to store the user's link mode bitmaps */
551#define __ETHTOOL_LINK_MODE_MASK_NU32 \
552 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
553
554/* layout of the struct passed from/to userland */
555struct ethtool_link_usettings {
556 struct ethtool_link_settings base;
557 struct {
558 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
559 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
560 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
561 } link_modes;
562};
563
564/* Internal kernel helper to query a device ethtool_link_settings.
565 *
566 * Backward compatibility note: for compatibility with legacy drivers
567 * that implement only the ethtool_cmd API, this has to work with both
568 * drivers implementing get_link_ksettings API and drivers
569 * implementing get_settings API. When drivers implement get_settings
570 * and report ethtool_cmd deprecated fields
571 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
572 * because the resulting struct ethtool_link_settings does not report them.
573 */
574int __ethtool_get_link_ksettings(struct net_device *dev,
575 struct ethtool_link_ksettings *link_ksettings)
576{
577 int err;
578 struct ethtool_cmd cmd;
579
580 ASSERT_RTNL();
581
582 if (dev->ethtool_ops->get_link_ksettings) {
583 memset(link_ksettings, 0, sizeof(*link_ksettings));
584 return dev->ethtool_ops->get_link_ksettings(dev,
585 link_ksettings);
586 }
587
588 /* driver doesn't support %ethtool_link_ksettings API. revert to
589 * legacy %ethtool_cmd API, unless it's not supported either.
590 * TODO: remove when ethtool_ops::get_settings disappears internally
591 */
3237fc63
DD		 592 if (!dev->ethtool_ops->get_settings)
593 return -EOPNOTSUPP;
594
595 memset(&cmd, 0, sizeof(cmd));
596 cmd.cmd = ETHTOOL_GSET;
597 err = dev->ethtool_ops->get_settings(dev, &cmd);
3f1ac7a7
DD		 598 if (err < 0)
599 return err;
600
601 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
602 */
603 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
604 return err;
605}
606EXPORT_SYMBOL(__ethtool_get_link_ksettings);
607
608/* convert ethtool_link_usettings in user space to a kernel internal
609 * ethtool_link_ksettings. return 0 on success, errno on error.
610 */
611static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
612 const void __user *from)
613{
614 struct ethtool_link_usettings link_usettings;
615
616 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
617 return -EFAULT;
618
619 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
3aa56885
YN		 620 bitmap_from_arr32(to->link_modes.supported,
621 link_usettings.link_modes.supported,
622 __ETHTOOL_LINK_MODE_MASK_NBITS);
623 bitmap_from_arr32(to->link_modes.advertising,
624 link_usettings.link_modes.advertising,
625 __ETHTOOL_LINK_MODE_MASK_NBITS);
626 bitmap_from_arr32(to->link_modes.lp_advertising,
627 link_usettings.link_modes.lp_advertising,
628 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 629
630 return 0;
631}
632
633/* convert a kernel internal ethtool_link_ksettings to
634 * ethtool_link_usettings in user space. return 0 on success, errno on
635 * error.
636 */
637static int
638store_link_ksettings_for_user(void __user *to,
639 const struct ethtool_link_ksettings *from)
640{
641 struct ethtool_link_usettings link_usettings;
642
643 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
3aa56885
YN		 644 bitmap_to_arr32(link_usettings.link_modes.supported,
645 from->link_modes.supported,
646 __ETHTOOL_LINK_MODE_MASK_NBITS);
647 bitmap_to_arr32(link_usettings.link_modes.advertising,
648 from->link_modes.advertising,
649 __ETHTOOL_LINK_MODE_MASK_NBITS);
650 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
651 from->link_modes.lp_advertising,
652 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 653
654 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
655 return -EFAULT;
656
657 return 0;
658}
659
660/* Query device for its ethtool_link_settings.
661 *
662 * Backward compatibility note: this function must fail when driver
663 * does not implement ethtool::get_link_ksettings, even if legacy
664 * ethtool_ops::get_settings is implemented. This tells new versions
665 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
666 * this driver, so that they can correctly access the ethtool_cmd
667 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
668 * implements ethtool_ops::get_settings anymore.
669 */
670static int ethtool_get_link_ksettings(struct net_device *dev,
671 void __user *useraddr)
672{
673 int err = 0;
674 struct ethtool_link_ksettings link_ksettings;
675
676 ASSERT_RTNL();
677
678 if (!dev->ethtool_ops->get_link_ksettings)
679 return -EOPNOTSUPP;
680
681 /* handle bitmap nbits handshake */
682 if (copy_from_user(&link_ksettings.base, useraddr,
683 sizeof(link_ksettings.base)))
684 return -EFAULT;
685
686 if (__ETHTOOL_LINK_MODE_MASK_NU32
687 != link_ksettings.base.link_mode_masks_nwords) {
688 /* wrong link mode nbits requested */
689 memset(&link_ksettings, 0, sizeof(link_ksettings));
793cf87d 690 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
3f1ac7a7
DD		 691 /* send back number of words required as negative val */
692 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
693 "need too many bits for link modes!");
694 link_ksettings.base.link_mode_masks_nwords
695 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
696
697 /* copy the base fields back to user, not the link
698 * mode bitmaps
699 */
700 if (copy_to_user(useraddr, &link_ksettings.base,
701 sizeof(link_ksettings.base)))
702 return -EFAULT;
703
704 return 0;
705 }
706
707 /* handshake successful: user/kernel agree on
708 * link_mode_masks_nwords
709 */
710
711 memset(&link_ksettings, 0, sizeof(link_ksettings));
712 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
713 if (err < 0)
714 return err;
715
716 /* make sure we tell the right values to user */
717 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
718 link_ksettings.base.link_mode_masks_nwords
719 = __ETHTOOL_LINK_MODE_MASK_NU32;
720
721 return store_link_ksettings_for_user(useraddr, &link_ksettings);
722}
723
724/* Update device ethtool_link_settings.
725 *
726 * Backward compatibility note: this function must fail when driver
727 * does not implement ethtool::set_link_ksettings, even if legacy
728 * ethtool_ops::set_settings is implemented. This tells new versions
729 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
730 * this driver, so that they can correctly update the ethtool_cmd
731 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
732 * implements ethtool_ops::get_settings anymore.
733 */
734static int ethtool_set_link_ksettings(struct net_device *dev,
735 void __user *useraddr)
736{
737 int err;
738 struct ethtool_link_ksettings link_ksettings;
739
740 ASSERT_RTNL();
741
742 if (!dev->ethtool_ops->set_link_ksettings)
743 return -EOPNOTSUPP;
744
745 /* make sure nbits field has expected value */
746 if (copy_from_user(&link_ksettings.base, useraddr,
747 sizeof(link_ksettings.base)))
748 return -EFAULT;
749
750 if (__ETHTOOL_LINK_MODE_MASK_NU32
751 != link_ksettings.base.link_mode_masks_nwords)
752 return -EINVAL;
753
754 /* copy the whole structure, now that we know it has expected
755 * format
756 */
757 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
758 if (err)
759 return err;
760
761 /* re-check nwords field, just in case */
762 if (__ETHTOOL_LINK_MODE_MASK_NU32
763 != link_ksettings.base.link_mode_masks_nwords)
764 return -EINVAL;
765
766 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
767}
768
3f1ac7a7
DD		 769/* Query device for its ethtool_cmd settings.
770 *
771 * Backward compatibility note: for compatibility with legacy ethtool,
772 * this has to work with both drivers implementing get_link_ksettings
773 * API and drivers implementing get_settings API. When drivers
774 * implement get_link_ksettings and report higher link mode bits, a
775 * kernel warning is logged once (with name of 1st driver/device) to
776 * recommend user to upgrade ethtool, but the command is successful
777 * (only the lower link mode bits reported back to user).
778 */
4bc71cb9
JP		 779static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
780{
4bc71cb9
JP		 781 struct ethtool_cmd cmd;
782
3f1ac7a7
DD		 783 ASSERT_RTNL();
784
785 if (dev->ethtool_ops->get_link_ksettings) {
786 /* First, use link_ksettings API if it is supported */
787 int err;
788 struct ethtool_link_ksettings link_ksettings;
789
790 memset(&link_ksettings, 0, sizeof(link_ksettings));
791 err = dev->ethtool_ops->get_link_ksettings(dev,
792 &link_ksettings);
793 if (err < 0)
794 return err;
71891e2d
SH		 795 convert_link_ksettings_to_legacy_settings(&cmd,
796 &link_ksettings);
3f1ac7a7
DD		 797
798 /* send a sensible cmd tag back to user */
799 cmd.cmd = ETHTOOL_GSET;
800 } else {
3f1ac7a7
DD		 801 /* driver doesn't support %ethtool_link_ksettings
802 * API. revert to legacy %ethtool_cmd API, unless it's
803 * not supported either.
804 */
3237fc63
DD		 805 int err;
806
807 if (!dev->ethtool_ops->get_settings)
808 return -EOPNOTSUPP;
809
810 memset(&cmd, 0, sizeof(cmd));
811 cmd.cmd = ETHTOOL_GSET;
812 err = dev->ethtool_ops->get_settings(dev, &cmd);
3f1ac7a7
DD		 813 if (err < 0)
814 return err;
815 }
1da177e4
LT		 816
817 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
818 return -EFAULT;
3f1ac7a7 819
1da177e4
LT		 820 return 0;
821}
822
3f1ac7a7
DD		 823/* Update device link settings with given ethtool_cmd.
824 *
825 * Backward compatibility note: for compatibility with legacy ethtool,
826 * this has to work with both drivers implementing set_link_ksettings
827 * API and drivers implementing set_settings API. When drivers
828 * implement set_link_ksettings and user's request updates deprecated
829 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
830 * warning is logged once (with name of 1st driver/device) to
831 * recommend user to upgrade ethtool, and the request is rejected.
832 */
1da177e4
LT		 833static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
834{
835 struct ethtool_cmd cmd;
836
3f1ac7a7 837 ASSERT_RTNL();
1da177e4
LT		 838
839 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
840 return -EFAULT;
841
3f1ac7a7
DD		 842 /* first, try new %ethtool_link_ksettings API. */
843 if (dev->ethtool_ops->set_link_ksettings) {
844 struct ethtool_link_ksettings link_ksettings;
845
846 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
847 &cmd))
848 return -EINVAL;
849
850 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
851 link_ksettings.base.link_mode_masks_nwords
852 = __ETHTOOL_LINK_MODE_MASK_NU32;
853 return dev->ethtool_ops->set_link_ksettings(dev,
854 &link_ksettings);
855 }
856
857 /* legacy %ethtool_cmd API */
858
859 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
860 * disappears internally
861 */
862
863 if (!dev->ethtool_ops->set_settings)
864 return -EOPNOTSUPP;
865
1da177e4
LT		 866 return dev->ethtool_ops->set_settings(dev, &cmd);
867}
868
97f8aefb 869static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
870 void __user *useraddr)
1da177e4
LT		 871{
872 struct ethtool_drvinfo info;
76fd8593 873 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 874
1da177e4
LT		 875 memset(&info, 0, sizeof(info));
876 info.cmd = ETHTOOL_GDRVINFO;
c03a14e8 877 if (ops->get_drvinfo) {
01414802
BH		 878 ops->get_drvinfo(dev, &info);
879 } else if (dev->dev.parent && dev->dev.parent->driver) {
880 strlcpy(info.bus_info, dev_name(dev->dev.parent),
881 sizeof(info.bus_info));
882 strlcpy(info.driver, dev->dev.parent->driver->name,
883 sizeof(info.driver));
884 } else {
885 return -EOPNOTSUPP;
886 }
1da177e4 887
723b2f57
JG		 888 /*
889 * this method of obtaining string set info is deprecated;
d17792eb 890 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 891 */
c03a14e8 892 if (ops->get_sset_count) {
ff03d49f
JG		 893 int rc;
894
895 rc = ops->get_sset_count(dev, ETH_SS_TEST);
896 if (rc >= 0)
897 info.testinfo_len = rc;
898 rc = ops->get_sset_count(dev, ETH_SS_STATS);
899 if (rc >= 0)
900 info.n_stats = rc;
339bf024
JG		 901 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
902 if (rc >= 0)
903 info.n_priv_flags = rc;
ff03d49f 904 }
c03a14e8 905 if (ops->get_regs_len)
1da177e4 906 info.regdump_len = ops->get_regs_len(dev);
c03a14e8 907 if (ops->get_eeprom_len)
1da177e4
LT		 908 info.eedump_len = ops->get_eeprom_len(dev);
909
910 if (copy_to_user(useraddr, &info, sizeof(info)))
911 return -EFAULT;
912 return 0;
913}
914
f5c445ed 915static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 916 void __user *useraddr)
723b2f57
JG		 917{
918 struct ethtool_sset_info info;
723b2f57
JG		 919 u64 sset_mask;
920 int i, idx = 0, n_bits = 0, ret, rc;
921 u32 *info_buf = NULL;
922
723b2f57
JG		 923 if (copy_from_user(&info, useraddr, sizeof(info)))
924 return -EFAULT;
925
926 /* store copy of mask, because we zero struct later on */
927 sset_mask = info.sset_mask;
928 if (!sset_mask)
929 return 0;
930
931 /* calculate size of return buffer */
d17792eb 932 n_bits = hweight64(sset_mask);
723b2f57
JG		 933
934 memset(&info, 0, sizeof(info));
935 info.cmd = ETHTOOL_GSSET_INFO;
936
937 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
938 if (!info_buf)
939 return -ENOMEM;
940
941 /*
942 * fill return buffer based on input bitmask and successful
943 * get_sset_count return
944 */
945 for (i = 0; i < 64; i++) {
946 if (!(sset_mask & (1ULL << i)))
947 continue;
948
340ae165 949 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 950 if (rc >= 0) {
951 info.sset_mask |= (1ULL << i);
952 info_buf[idx++] = rc;
953 }
954 }
955
956 ret = -EFAULT;
957 if (copy_to_user(useraddr, &info, sizeof(info)))
958 goto out;
959
960 useraddr += offsetof(struct ethtool_sset_info, data);
961 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
962 goto out;
963
964 ret = 0;
965
966out:
967 kfree(info_buf);
968 return ret;
969}
970
97f8aefb 971static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 972 u32 cmd, void __user *useraddr)
0853ad66 973{
bf988435
BH		 974 struct ethtool_rxnfc info;
975 size_t info_size = sizeof(info);
55664f32 976 int rc;
0853ad66 977
59089d8d 978 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 979 return -EOPNOTSUPP;
980
bf988435
BH		 981 /* struct ethtool_rxnfc was originally defined for
982 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
983 * members. User-space might still be using that
984 * definition. */
985 if (cmd == ETHTOOL_SRXFH)
986 info_size = (offsetof(struct ethtool_rxnfc, data) +
987 sizeof(info.data));
988
989 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 990 return -EFAULT;
991
55664f32
BH		 992 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
993 if (rc)
994 return rc;
995
996 if (cmd == ETHTOOL_SRXCLSRLINS &&
997 copy_to_user(useraddr, &info, info_size))
998 return -EFAULT;
999
1000 return 0;
0853ad66
SB		 1001}
1002
97f8aefb 1003static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 1004 u32 cmd, void __user *useraddr)
0853ad66
SB		 1005{
1006 struct ethtool_rxnfc info;
bf988435 1007 size_t info_size = sizeof(info);
59089d8d
SB		 1008 const struct ethtool_ops *ops = dev->ethtool_ops;
1009 int ret;
1010 void *rule_buf = NULL;
0853ad66 1011
59089d8d 1012 if (!ops->get_rxnfc)
0853ad66
SB		 1013 return -EOPNOTSUPP;
1014
bf988435
BH		 1015 /* struct ethtool_rxnfc was originally defined for
1016 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1017 * members. User-space might still be using that
1018 * definition. */
1019 if (cmd == ETHTOOL_GRXFH)
1020 info_size = (offsetof(struct ethtool_rxnfc, data) +
1021 sizeof(info.data));
1022
1023 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 1024 return -EFAULT;
1025
84a1d9c4
EC		 1026 /* If FLOW_RSS was requested then user-space must be using the
1027 * new definition, as FLOW_RSS is newer.
1028 */
1029 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
1030 info_size = sizeof(info);
1031 if (copy_from_user(&info, useraddr, info_size))
1032 return -EFAULT;
1033 }
1034
59089d8d
SB		 1035 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1036 if (info.rule_cnt > 0) {
db048b69 1037 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 1038 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 1039 GFP_USER);
59089d8d
SB		 1040 if (!rule_buf)
1041 return -ENOMEM;
1042 }
1043 }
0853ad66 1044
59089d8d
SB		 1045 ret = ops->get_rxnfc(dev, &info, rule_buf);
1046 if (ret < 0)
1047 goto err_out;
1048
1049 ret = -EFAULT;
bf988435 1050 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 1051 goto err_out;
1052
1053 if (rule_buf) {
1054 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1055 if (copy_to_user(useraddr, rule_buf,
1056 info.rule_cnt * sizeof(u32)))
1057 goto err_out;
1058 }
1059 ret = 0;
1060
1061err_out:
c9caceca 1062 kfree(rule_buf);
59089d8d
SB		 1063
1064 return ret;
0853ad66
SB		 1065}
1066
3de0b592
VD		 1067static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1068 struct ethtool_rxnfc *rx_rings,
1069 u32 size)
1070{
fb95cd8d 1071 int i;
3de0b592
VD		 1072
1073 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
fb95cd8d 1074 return -EFAULT;
3de0b592
VD		 1075
1076 /* Validate ring indices */
fb95cd8d
BH		 1077 for (i = 0; i < size; i++)
1078 if (indir[i] >= rx_rings->data)
1079 return -EINVAL;
1080
1081 return 0;
3de0b592
VD		 1082}
1083
ba905f5e 1084u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
960fb622
ED		 1085
1086void netdev_rss_key_fill(void *buffer, size_t len)
1087{
1088 BUG_ON(len > sizeof(netdev_rss_key));
1089 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1090 memcpy(buffer, netdev_rss_key, len);
1091}
1092EXPORT_SYMBOL(netdev_rss_key_fill);
1093
d4ab4286
KJ		 1094static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1095{
1096 u32 dev_size, current_max = 0;
1097 u32 *indir;
1098 int ret;
1099
1100 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1101 !dev->ethtool_ops->get_rxfh)
1102 return -EOPNOTSUPP;
1103 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1104 if (dev_size == 0)
1105 return -EOPNOTSUPP;
1106
1107 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1108 if (!indir)
1109 return -ENOMEM;
1110
1111 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1112 if (ret)
1113 goto out;
1114
1115 while (dev_size--)
1116 current_max = max(current_max, indir[dev_size]);
1117
1118 *max = current_max;
1119
1120out:
1121 kfree(indir);
1122 return ret;
1123}
1124
a5b6ee29
BH		 1125static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1126 void __user *useraddr)
1127{
7850f63f
BH		 1128 u32 user_size, dev_size;
1129 u32 *indir;
a5b6ee29
BH		 1130 int ret;
1131
7850f63f 1132 if (!dev->ethtool_ops->get_rxfh_indir_size ||
fe62d001 1133 !dev->ethtool_ops->get_rxfh)
7850f63f
BH		 1134 return -EOPNOTSUPP;
1135 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1136 if (dev_size == 0)
a5b6ee29
BH		 1137 return -EOPNOTSUPP;
1138
7850f63f 1139 if (copy_from_user(&user_size,
a5b6ee29 1140 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1141 sizeof(user_size)))
a5b6ee29
BH		 1142 return -EFAULT;
1143
7850f63f
BH		 1144 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1145 &dev_size, sizeof(dev_size)))
1146 return -EFAULT;
1147
1148 /* If the user buffer size is 0, this is just a query for the
1149 * device table size. Otherwise, if it's smaller than the
1150 * device table size it's an error.
1151 */
1152 if (user_size < dev_size)
1153 return user_size == 0 ? 0 : -EINVAL;
1154
1155 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1156 if (!indir)
1157 return -ENOMEM;
1158
892311f6 1159 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
a5b6ee29
BH		 1160 if (ret)
1161 goto out;
1162
7850f63f
BH		 1163 if (copy_to_user(useraddr +
1164 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1165 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 1166 ret = -EFAULT;
1167
1168out:
1169 kfree(indir);
1170 return ret;
1171}
1172
1173static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1174 void __user *useraddr)
1175{
7850f63f
BH		 1176 struct ethtool_rxnfc rx_rings;
1177 u32 user_size, dev_size, i;
1178 u32 *indir;
c03a14e8 1179 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29 1180 int ret;
3de0b592 1181 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
a5b6ee29 1182
fe62d001 1183 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
c03a14e8 1184 !ops->get_rxnfc)
7850f63f 1185 return -EOPNOTSUPP;
c03a14e8
JP		 1186
1187 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 1188 if (dev_size == 0)
a5b6ee29
BH		 1189 return -EOPNOTSUPP;
1190
7850f63f 1191 if (copy_from_user(&user_size,
a5b6ee29 1192 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1193 sizeof(user_size)))
a5b6ee29
BH		 1194 return -EFAULT;
1195
278bc429 1196 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 1197 return -EINVAL;
1198
1199 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1200 if (!indir)
1201 return -ENOMEM;
1202
7850f63f 1203 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 1204 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 1205 if (ret)
1206 goto out;
278bc429
BH		 1207
1208 if (user_size == 0) {
1209 for (i = 0; i < dev_size; i++)
1210 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1211 } else {
3de0b592
VD		 1212 ret = ethtool_copy_validate_indir(indir,
1213 useraddr + ringidx_offset,
1214 &rx_rings,
1215 dev_size);
1216 if (ret)
1217 goto out;
1218 }
1219
892311f6 1220 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
d4ab4286
KJ		 1221 if (ret)
1222 goto out;
1223
1224 /* indicate whether rxfh was set to default */
1225 if (user_size == 0)
1226 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1227 else
1228 dev->priv_flags |= IFF_RXFH_CONFIGURED;
3de0b592
VD		 1229
1230out:
1231 kfree(indir);
1232 return ret;
1233}
1234
1235static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1236 void __user *useraddr)
1237{
1238 int ret;
1239 const struct ethtool_ops *ops = dev->ethtool_ops;
f062a384 1240 u32 user_indir_size, user_key_size;
3de0b592 1241 u32 dev_indir_size = 0, dev_key_size = 0;
f062a384 1242 struct ethtool_rxfh rxfh;
3de0b592 1243 u32 total_size;
f062a384 1244 u32 indir_bytes;
3de0b592 1245 u32 *indir = NULL;
892311f6 1246 u8 dev_hfunc = 0;
3de0b592
VD		 1247 u8 *hkey = NULL;
1248 u8 *rss_config;
1249
892311f6 1250 if (!ops->get_rxfh)
3de0b592
VD		 1251 return -EOPNOTSUPP;
1252
1253 if (ops->get_rxfh_indir_size)
1254 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592
VD		 1255 if (ops->get_rxfh_key_size)
1256 dev_key_size = ops->get_rxfh_key_size(dev);
1257
f062a384 1258 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592 1259 return -EFAULT;
f062a384
BH		 1260 user_indir_size = rxfh.indir_size;
1261 user_key_size = rxfh.key_size;
3de0b592 1262
f062a384 1263 /* Check that reserved fields are 0 for now */
84a1d9c4 1264 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1265 return -EINVAL;
84a1d9c4
EC		 1266 /* Most drivers don't handle rss_context, check it's 0 as well */
1267 if (rxfh.rss_context && !ops->get_rxfh_context)
1268 return -EOPNOTSUPP;
f062a384
BH		 1269
1270 rxfh.indir_size = dev_indir_size;
1271 rxfh.key_size = dev_key_size;
1272 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
3de0b592
VD		 1273 return -EFAULT;
1274
3de0b592
VD		 1275 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1276 (user_key_size && (user_key_size != dev_key_size)))
1277 return -EINVAL;
1278
1279 indir_bytes = user_indir_size * sizeof(indir[0]);
1280 total_size = indir_bytes + user_key_size;
1281 rss_config = kzalloc(total_size, GFP_USER);
1282 if (!rss_config)
1283 return -ENOMEM;
1284
1285 if (user_indir_size)
1286 indir = (u32 *)rss_config;
1287
1288 if (user_key_size)
1289 hkey = rss_config + indir_bytes;
1290
84a1d9c4
EC		 1291 if (rxfh.rss_context)
1292 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1293 &dev_hfunc,
1294 rxfh.rss_context);
1295 else
1296 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
892311f6
EP		 1297 if (ret)
1298 goto out;
3de0b592 1299
892311f6
EP		 1300 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1301 &dev_hfunc, sizeof(rxfh.hfunc))) {
1302 ret = -EFAULT;
1303 } else if (copy_to_user(useraddr +
1304 offsetof(struct ethtool_rxfh, rss_config[0]),
1305 rss_config, total_size)) {
1306 ret = -EFAULT;
1307 }
1308out:
3de0b592
VD		 1309 kfree(rss_config);
1310
1311 return ret;
1312}
1313
1314static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1315 void __user *useraddr)
1316{
1317 int ret;
1318 const struct ethtool_ops *ops = dev->ethtool_ops;
1319 struct ethtool_rxnfc rx_rings;
f062a384
BH		 1320 struct ethtool_rxfh rxfh;
1321 u32 dev_indir_size = 0, dev_key_size = 0, i;
3de0b592
VD		 1322 u32 *indir = NULL, indir_bytes = 0;
1323 u8 *hkey = NULL;
1324 u8 *rss_config;
3de0b592 1325 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
84a1d9c4 1326 bool delete = false;
3de0b592 1327
892311f6 1328 if (!ops->get_rxnfc || !ops->set_rxfh)
3de0b592
VD		 1329 return -EOPNOTSUPP;
1330
1331 if (ops->get_rxfh_indir_size)
1332 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592 1333 if (ops->get_rxfh_key_size)
d340c862 1334 dev_key_size = ops->get_rxfh_key_size(dev);
3de0b592 1335
f062a384 1336 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592
VD		 1337 return -EFAULT;
1338
f062a384 1339 /* Check that reserved fields are 0 for now */
84a1d9c4 1340 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1341 return -EINVAL;
84a1d9c4
EC		 1342 /* Most drivers don't handle rss_context, check it's 0 as well */
1343 if (rxfh.rss_context && !ops->set_rxfh_context)
1344 return -EOPNOTSUPP;
f062a384 1345
892311f6
EP		 1346 /* If either indir, hash key or function is valid, proceed further.
1347 * Must request at least one change: indir size, hash key or function.
3de0b592 1348 */
f062a384
BH		 1349 if ((rxfh.indir_size &&
1350 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1351 rxfh.indir_size != dev_indir_size) ||
1352 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1353 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
892311f6 1354 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
3de0b592
VD		 1355 return -EINVAL;
1356
f062a384 1357 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
3de0b592
VD		 1358 indir_bytes = dev_indir_size * sizeof(indir[0]);
1359
f062a384 1360 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
3de0b592
VD		 1361 if (!rss_config)
1362 return -ENOMEM;
1363
1364 rx_rings.cmd = ETHTOOL_GRXRINGS;
1365 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1366 if (ret)
1367 goto out;
1368
84a1d9c4
EC		 1369 /* rxfh.indir_size == 0 means reset the indir table to default (master
1370 * context) or delete the context (other RSS contexts).
f062a384 1371 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
3de0b592 1372 */
f062a384
BH		 1373 if (rxfh.indir_size &&
1374 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
3de0b592
VD		 1375 indir = (u32 *)rss_config;
1376 ret = ethtool_copy_validate_indir(indir,
1377 useraddr + rss_cfg_offset,
1378 &rx_rings,
f062a384 1379 rxfh.indir_size);
3de0b592 1380 if (ret)
7850f63f 1381 goto out;
f062a384 1382 } else if (rxfh.indir_size == 0) {
84a1d9c4
EC		 1383 if (rxfh.rss_context == 0) {
1384 indir = (u32 *)rss_config;
1385 for (i = 0; i < dev_indir_size; i++)
1386 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1387 } else {
1388 delete = true;
1389 }
3de0b592 1390 }
278bc429 1391
f062a384 1392 if (rxfh.key_size) {
3de0b592
VD		 1393 hkey = rss_config + indir_bytes;
1394 if (copy_from_user(hkey,
1395 useraddr + rss_cfg_offset + indir_bytes,
f062a384 1396 rxfh.key_size)) {
3de0b592
VD		 1397 ret = -EFAULT;
1398 goto out;
278bc429 1399 }
7850f63f
BH		 1400 }
1401
84a1d9c4
EC		 1402 if (rxfh.rss_context)
1403 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1404 &rxfh.rss_context, delete);
1405 else
1406 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
d4ab4286
KJ		 1407 if (ret)
1408 goto out;
1409
84a1d9c4
EC		 1410 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1411 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1412 ret = -EFAULT;
1413
1414 if (!rxfh.rss_context) {
1415 /* indicate whether rxfh was set to default */
1416 if (rxfh.indir_size == 0)
1417 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1418 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1419 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1420 }
a5b6ee29
BH		 1421
1422out:
3de0b592 1423 kfree(rss_config);
a5b6ee29
BH		 1424 return ret;
1425}
1426
1da177e4
LT		 1427static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1428{
1429 struct ethtool_regs regs;
76fd8593 1430 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1431 void *regbuf;
1432 int reglen, ret;
1433
1434 if (!ops->get_regs || !ops->get_regs_len)
1435 return -EOPNOTSUPP;
1436
1437 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1438 return -EFAULT;
1439
1440 reglen = ops->get_regs_len(dev);
1441 if (regs.len > reglen)
1442 regs.len = reglen;
1443
3808d348
SG		 1444 regbuf = NULL;
1445 if (reglen) {
1446 regbuf = vzalloc(reglen);
1447 if (!regbuf)
1448 return -ENOMEM;
1449 }
1da177e4
LT		 1450
1451 ops->get_regs(dev, &regs, regbuf);
1452
1453 ret = -EFAULT;
1454 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1455 goto out;
1456 useraddr += offsetof(struct ethtool_regs, data);
67ae7cf1 1457 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1da177e4
LT		 1458 goto out;
1459 ret = 0;
1460
1461 out:
a77f5db3 1462 vfree(regbuf);
1da177e4
LT		 1463 return ret;
1464}
1465
d73d3a8c
BH		 1466static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1467{
1468 struct ethtool_value reset;
1469 int ret;
1470
1471 if (!dev->ethtool_ops->reset)
1472 return -EOPNOTSUPP;
1473
1474 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1475 return -EFAULT;
1476
1477 ret = dev->ethtool_ops->reset(dev, &reset.data);
1478 if (ret)
1479 return ret;
1480
1481 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1482 return -EFAULT;
1483 return 0;
1484}
1485
1da177e4
LT		 1486static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1487{
8e557421 1488 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 1489
1490 if (!dev->ethtool_ops->get_wol)
1491 return -EOPNOTSUPP;
1492
1493 dev->ethtool_ops->get_wol(dev, &wol);
1494
1495 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1496 return -EFAULT;
1497 return 0;
1498}
1499
1500static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1501{
1502 struct ethtool_wolinfo wol;
1503
1504 if (!dev->ethtool_ops->set_wol)
1505 return -EOPNOTSUPP;
1506
1507 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1508 return -EFAULT;
1509
1510 return dev->ethtool_ops->set_wol(dev, &wol);
1511}
1512
80f12ecc
YM		 1513static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1514{
1515 struct ethtool_eee edata;
1516 int rc;
1517
1518 if (!dev->ethtool_ops->get_eee)
1519 return -EOPNOTSUPP;
1520
1521 memset(&edata, 0, sizeof(struct ethtool_eee));
1522 edata.cmd = ETHTOOL_GEEE;
1523 rc = dev->ethtool_ops->get_eee(dev, &edata);
1524
1525 if (rc)
1526 return rc;
1527
1528 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1529 return -EFAULT;
1530
1531 return 0;
1532}
1533
1534static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1535{
1536 struct ethtool_eee edata;
1537
1538 if (!dev->ethtool_ops->set_eee)
1539 return -EOPNOTSUPP;
1540
1541 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1542 return -EFAULT;
1543
1544 return dev->ethtool_ops->set_eee(dev, &edata);
1545}
1546
1da177e4
LT		 1547static int ethtool_nway_reset(struct net_device *dev)
1548{
1549 if (!dev->ethtool_ops->nway_reset)
1550 return -EOPNOTSUPP;
1551
1552 return dev->ethtool_ops->nway_reset(dev);
1553}
1554
e596e6e4
BH		 1555static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1556{
1557 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1558
1559 if (!dev->ethtool_ops->get_link)
1560 return -EOPNOTSUPP;
1561
1562 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1563
1564 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1565 return -EFAULT;
1566 return 0;
1567}
1568
081d094e
BH		 1569static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1570 int (*getter)(struct net_device *,
1571 struct ethtool_eeprom *, u8 *),
1572 u32 total_len)
1da177e4
LT		 1573{
1574 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 1575 void __user *userbuf = useraddr + sizeof(eeprom);
1576 u32 bytes_remaining;
1da177e4 1577 u8 *data;
b131dd5d 1578 int ret = 0;
1da177e4 1579
1da177e4
LT		 1580 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1581 return -EFAULT;
1582
1583 /* Check for wrap and zero */
1584 if (eeprom.offset + eeprom.len <= eeprom.offset)
1585 return -EINVAL;
1586
1587 /* Check for exceeding total eeprom len */
081d094e 1588 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 1589 return -EINVAL;
1590
b131dd5d 1591 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1592 if (!data)
1593 return -ENOMEM;
1594
b131dd5d
MSB		 1595 bytes_remaining = eeprom.len;
1596 while (bytes_remaining > 0) {
1597 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1598
081d094e 1599 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 1600 if (ret)
1601 break;
1602 if (copy_to_user(userbuf, data, eeprom.len)) {
1603 ret = -EFAULT;
1604 break;
1605 }
1606 userbuf += eeprom.len;
1607 eeprom.offset += eeprom.len;
1608 bytes_remaining -= eeprom.len;
1609 }
1da177e4 1610
c5835df9
MSB		 1611 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1612 eeprom.offset -= eeprom.len;
1613 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1614 ret = -EFAULT;
1615
1da177e4
LT		 1616 kfree(data);
1617 return ret;
1618}
1619
081d094e
BH		 1620static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1621{
1622 const struct ethtool_ops *ops = dev->ethtool_ops;
1623
e0fb6fb6
GR		 1624 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1625 !ops->get_eeprom_len(dev))
081d094e
BH		 1626 return -EOPNOTSUPP;
1627
1628 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1629 ops->get_eeprom_len(dev));
1630}
1631
1da177e4
LT		 1632static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1633{
1634 struct ethtool_eeprom eeprom;
76fd8593 1635 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1636 void __user *userbuf = useraddr + sizeof(eeprom);
1637 u32 bytes_remaining;
1da177e4 1638 u8 *data;
b131dd5d 1639 int ret = 0;
1da177e4 1640
e0fb6fb6
GR		 1641 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1642 !ops->get_eeprom_len(dev))
1da177e4
LT		 1643 return -EOPNOTSUPP;
1644
1645 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1646 return -EFAULT;
1647
1648 /* Check for wrap and zero */
1649 if (eeprom.offset + eeprom.len <= eeprom.offset)
1650 return -EINVAL;
1651
1652 /* Check for exceeding total eeprom len */
1653 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1654 return -EINVAL;
1655
b131dd5d 1656 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1657 if (!data)
1658 return -ENOMEM;
1659
b131dd5d
MSB		 1660 bytes_remaining = eeprom.len;
1661 while (bytes_remaining > 0) {
1662 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1663
1664 if (copy_from_user(data, userbuf, eeprom.len)) {
1665 ret = -EFAULT;
1666 break;
1667 }
1668 ret = ops->set_eeprom(dev, &eeprom, data);
1669 if (ret)
1670 break;
1671 userbuf += eeprom.len;
1672 eeprom.offset += eeprom.len;
1673 bytes_remaining -= eeprom.len;
1674 }
1da177e4 1675
1da177e4
LT		 1676 kfree(data);
1677 return ret;
1678}
1679
97f8aefb 1680static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1681 void __user *useraddr)
1da177e4 1682{
8e557421 1683 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 1684
1685 if (!dev->ethtool_ops->get_coalesce)
1686 return -EOPNOTSUPP;
1687
1688 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1689
1690 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1691 return -EFAULT;
1692 return 0;
1693}
1694
97f8aefb 1695static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1696 void __user *useraddr)
1da177e4
LT		 1697{
1698 struct ethtool_coalesce coalesce;
1699
fa04ae5c 1700 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1701 return -EOPNOTSUPP;
1702
1703 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1704 return -EFAULT;
1705
1706 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1707}
1708
1709static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1710{
8e557421 1711 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1712
1713 if (!dev->ethtool_ops->get_ringparam)
1714 return -EOPNOTSUPP;
1715
1716 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1717
1718 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1719 return -EFAULT;
1720 return 0;
1721}
1722
1723static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1724{
37e2d99b 1725 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4 1726
37e2d99b 1727 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1da177e4
LT		 1728 return -EOPNOTSUPP;
1729
1730 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1731 return -EFAULT;
1732
37e2d99b
EE		 1733 dev->ethtool_ops->get_ringparam(dev, &max);
1734
1735 /* ensure new ring parameters are within the maximums */
1736 if (ringparam.rx_pending > max.rx_max_pending ||
1737 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1738 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1739 ringparam.tx_pending > max.tx_max_pending)
1740 return -EINVAL;
1741
1da177e4
LT		 1742 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1743}
1744
8b5933c3 1745static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1746 void __user *useraddr)
1747{
1748 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1749
1750 if (!dev->ethtool_ops->get_channels)
1751 return -EOPNOTSUPP;
1752
1753 dev->ethtool_ops->get_channels(dev, &channels);
1754
1755 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1756 return -EFAULT;
1757 return 0;
1758}
1759
1760static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1761 void __user *useraddr)
1762{
31a86d13 1763 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
d4ab4286 1764 u32 max_rx_in_use = 0;
8b5933c3 1765
8bf36862 1766 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
8b5933c3 1767 return -EOPNOTSUPP;
1768
1769 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1770 return -EFAULT;
1771
8bf36862
KJ		 1772 dev->ethtool_ops->get_channels(dev, &max);
1773
1774 /* ensure new counts are within the maximums */
1775 if ((channels.rx_count > max.max_rx) ||
1776 (channels.tx_count > max.max_tx) ||
1777 (channels.combined_count > max.max_combined) ||
1778 (channels.other_count > max.max_other))
1779 return -EINVAL;
1780
d4ab4286
KJ		 1781 /* ensure the new Rx count fits within the configured Rx flow
1782 * indirection table settings */
1783 if (netif_is_rxfh_configured(dev) &&
1784 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1785 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1786 return -EINVAL;
1787
8b5933c3 1788 return dev->ethtool_ops->set_channels(dev, &channels);
1789}
1790
1da177e4
LT		 1791static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1792{
1793 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1794
1795 if (!dev->ethtool_ops->get_pauseparam)
1796 return -EOPNOTSUPP;
1797
1798 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1799
1800 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1801 return -EFAULT;
1802 return 0;
1803}
1804
1805static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1806{
1807 struct ethtool_pauseparam pauseparam;
1808
e1b90c41 1809 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1810 return -EOPNOTSUPP;
1811
1812 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1813 return -EFAULT;
1814
1815 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1816}
1817
1da177e4
LT		 1818static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1819{
1820 struct ethtool_test test;
76fd8593 1821 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1822 u64 *data;
ff03d49f 1823 int ret, test_len;
1da177e4 1824
a9828ec6 1825 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1826 return -EOPNOTSUPP;
1827
a9828ec6 1828 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1829 if (test_len < 0)
1830 return test_len;
1831 WARN_ON(test_len == 0);
1832
1da177e4
LT		 1833 if (copy_from_user(&test, useraddr, sizeof(test)))
1834 return -EFAULT;
1835
ff03d49f
JG		 1836 test.len = test_len;
1837 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1838 if (!data)
1839 return -ENOMEM;
1840
1841 ops->self_test(dev, &test, data);
1842
1843 ret = -EFAULT;
1844 if (copy_to_user(useraddr, &test, sizeof(test)))
1845 goto out;
1846 useraddr += sizeof(test);
1847 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1848 goto out;
1849 ret = 0;
1850
1851 out:
1852 kfree(data);
1853 return ret;
1854}
1855
1856static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1857{
1858 struct ethtool_gstrings gstrings;
1da177e4
LT		 1859 u8 *data;
1860 int ret;
1861
1da177e4
LT		 1862 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1863 return -EFAULT;
1864
340ae165 1865 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1866 if (ret < 0)
1867 return ret;
4d1ceea8
AS		 1868 if (ret > S32_MAX / ETH_GSTRING_LEN)
1869 return -ENOMEM;
1870 WARN_ON_ONCE(!ret);
a9828ec6
BH		 1871
1872 gstrings.len = ret;
4d1ceea8
AS		 1873 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1874 if (gstrings.len && !data)
1da177e4
LT		 1875 return -ENOMEM;
1876
340ae165 1877 __ethtool_get_strings(dev, gstrings.string_set, data);
1da177e4
LT		 1878
1879 ret = -EFAULT;
1880 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1881 goto out;
1882 useraddr += sizeof(gstrings);
4d1ceea8
AS		 1883 if (gstrings.len &&
1884 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1da177e4
LT		 1885 goto out;
1886 ret = 0;
1887
340ae165 1888out:
4d1ceea8 1889 vfree(data);
1da177e4
LT		 1890 return ret;
1891}
1892
1893static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1894{
1895 struct ethtool_value id;
68f512f2 1896 static bool busy;
c03a14e8 1897 const struct ethtool_ops *ops = dev->ethtool_ops;
68f512f2 1898 int rc;
1da177e4 1899
c03a14e8 1900 if (!ops->set_phys_id)
1da177e4
LT		 1901 return -EOPNOTSUPP;
1902
68f512f2
BH		 1903 if (busy)
1904 return -EBUSY;
1905
1da177e4
LT		 1906 if (copy_from_user(&id, useraddr, sizeof(id)))
1907 return -EFAULT;
1908
c03a14e8 1909 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1910 if (rc < 0)
68f512f2
BH		 1911 return rc;
1912
1913 /* Drop the RTNL lock while waiting, but prevent reentry or
1914 * removal of the device.
1915 */
1916 busy = true;
1917 dev_hold(dev);
1918 rtnl_unlock();
1919
1920 if (rc == 0) {
1921 /* Driver will handle this itself */
1922 schedule_timeout_interruptible(
143780c6 1923 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1924 } else {
fce55922
AB		 1925 /* Driver expects to be called at twice the frequency in rc */
1926 int n = rc * 2, i, interval = HZ / n;
1927
1928 /* Count down seconds */
68f512f2 1929 do {
fce55922
AB		 1930 /* Count down iterations per second */
1931 i = n;
1932 do {
1933 rtnl_lock();
c03a14e8 1934 rc = ops->set_phys_id(dev,
fce55922
AB		 1935 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1936 rtnl_unlock();
1937 if (rc)
1938 break;
1939 schedule_timeout_interruptible(interval);
1940 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1941 } while (!signal_pending(current) &&
1942 (id.data == 0 || --id.data != 0));
1943 }
1944
1945 rtnl_lock();
1946 dev_put(dev);
1947 busy = false;
1948
c03a14e8 1949 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 1950 return rc;
1da177e4
LT		 1951}
1952
1953static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1954{
1955 struct ethtool_stats stats;
76fd8593 1956 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1957 u64 *data;
ff03d49f 1958 int ret, n_stats;
1da177e4 1959
a9828ec6 1960 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1961 return -EOPNOTSUPP;
1962
a9828ec6 1963 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 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);
1da177e4
LT		 1969 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1970 return -EFAULT;
1971
ff03d49f 1972 stats.n_stats = n_stats;
4d1ceea8
AS		 1973 data = vzalloc(n_stats * sizeof(u64));
1974 if (n_stats && !data)
1da177e4
LT		 1975 return -ENOMEM;
1976
1977 ops->get_ethtool_stats(dev, &stats, data);
1978
1979 ret = -EFAULT;
1980 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1981 goto out;
1982 useraddr += sizeof(stats);
4d1ceea8 1983 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1da177e4
LT		 1984 goto out;
1985 ret = 0;
1986
1987 out:
4d1ceea8 1988 vfree(data);
1da177e4
LT		 1989 return ret;
1990}
1991
f3a40945
AL		 1992static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1993{
1994 struct ethtool_stats stats;
1995 struct phy_device *phydev = dev->phydev;
1996 u64 *data;
1997 int ret, n_stats;
1998
1999 if (!phydev)
2000 return -EOPNOTSUPP;
2001
2002 n_stats = phy_get_sset_count(phydev);
f3a40945
AL		 2003 if (n_stats < 0)
2004 return n_stats;
4d1ceea8
AS		 2005 if (n_stats > S32_MAX / sizeof(u64))
2006 return -ENOMEM;
2007 WARN_ON_ONCE(!n_stats);
f3a40945
AL		 2008
2009 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2010 return -EFAULT;
2011
2012 stats.n_stats = n_stats;
4d1ceea8
AS		 2013 data = vzalloc(n_stats * sizeof(u64));
2014 if (n_stats && !data)
f3a40945
AL		 2015 return -ENOMEM;
2016
2017 mutex_lock(&phydev->lock);
2018 phydev->drv->get_stats(phydev, &stats, data);
2019 mutex_unlock(&phydev->lock);
2020
2021 ret = -EFAULT;
2022 if (copy_to_user(useraddr, &stats, sizeof(stats)))
2023 goto out;
2024 useraddr += sizeof(stats);
4d1ceea8 2025 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
f3a40945
AL		 2026 goto out;
2027 ret = 0;
2028
2029 out:
4d1ceea8 2030 vfree(data);
f3a40945
AL		 2031 return ret;
2032}
2033
0bf0519d 2034static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 2035{
2036 struct ethtool_perm_addr epaddr;
a6f9a705 2037
313674af 2038 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 2039 return -EFAULT;
2040
313674af
MW		 2041 if (epaddr.size < dev->addr_len)
2042 return -ETOOSMALL;
2043 epaddr.size = dev->addr_len;
a6f9a705 2044
a6f9a705 2045 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 2046 return -EFAULT;
a6f9a705 2047 useraddr += sizeof(epaddr);
313674af
MW		 2048 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2049 return -EFAULT;
2050 return 0;
a6f9a705
JW		 2051}
2052
13c99b24
JG		 2053static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2054 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 2055{
8e557421 2056 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 2057
13c99b24 2058 if (!actor)
3ae7c0b2
JG		 2059 return -EOPNOTSUPP;
2060
13c99b24 2061 edata.data = actor(dev);
3ae7c0b2
JG		 2062
2063 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2064 return -EFAULT;
2065 return 0;
2066}
2067
13c99b24
JG		 2068static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2069 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 2070{
2071 struct ethtool_value edata;
2072
13c99b24 2073 if (!actor)
3ae7c0b2
JG		 2074 return -EOPNOTSUPP;
2075
2076 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2077 return -EFAULT;
2078
13c99b24 2079 actor(dev, edata.data);
339bf024
JG		 2080 return 0;
2081}
2082
13c99b24
JG		 2083static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2084 int (*actor)(struct net_device *, u32))
339bf024
JG		 2085{
2086 struct ethtool_value edata;
2087
13c99b24 2088 if (!actor)
339bf024
JG		 2089 return -EOPNOTSUPP;
2090
2091 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2092 return -EFAULT;
2093
13c99b24 2094 return actor(dev, edata.data);
339bf024
JG		 2095}
2096
97f8aefb 2097static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2098 char __user *useraddr)
05c6a8d7
AK		 2099{
2100 struct ethtool_flash efl;
2101
2102 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2103 return -EFAULT;
2104
2105 if (!dev->ethtool_ops->flash_device)
2106 return -EOPNOTSUPP;
2107
786f5281
BH		 2108 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2109
05c6a8d7
AK		 2110 return dev->ethtool_ops->flash_device(dev, &efl);
2111}
2112
29dd54b7
AC		 2113static int ethtool_set_dump(struct net_device *dev,
2114 void __user *useraddr)
2115{
2116 struct ethtool_dump dump;
2117
2118 if (!dev->ethtool_ops->set_dump)
2119 return -EOPNOTSUPP;
2120
2121 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2122 return -EFAULT;
2123
2124 return dev->ethtool_ops->set_dump(dev, &dump);
2125}
2126
2127static int ethtool_get_dump_flag(struct net_device *dev,
2128 void __user *useraddr)
2129{
2130 int ret;
2131 struct ethtool_dump dump;
2132 const struct ethtool_ops *ops = dev->ethtool_ops;
2133
c03a14e8 2134 if (!ops->get_dump_flag)
29dd54b7
AC		 2135 return -EOPNOTSUPP;
2136
2137 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2138 return -EFAULT;
2139
2140 ret = ops->get_dump_flag(dev, &dump);
2141 if (ret)
2142 return ret;
2143
2144 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2145 return -EFAULT;
2146 return 0;
2147}
2148
2149static int ethtool_get_dump_data(struct net_device *dev,
2150 void __user *useraddr)
2151{
2152 int ret;
2153 __u32 len;
2154 struct ethtool_dump dump, tmp;
2155 const struct ethtool_ops *ops = dev->ethtool_ops;
2156 void *data = NULL;
2157
c03a14e8 2158 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 2159 return -EOPNOTSUPP;
2160
2161 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2162 return -EFAULT;
2163
2164 memset(&tmp, 0, sizeof(tmp));
2165 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2166 ret = ops->get_dump_flag(dev, &tmp);
2167 if (ret)
2168 return ret;
2169
c590b5e2 2170 len = min(tmp.len, dump.len);
29dd54b7
AC		 2171 if (!len)
2172 return -EFAULT;
2173
c590b5e2
MS		 2174 /* Don't ever let the driver think there's more space available
2175 * than it requested with .get_dump_flag().
2176 */
2177 dump.len = len;
2178
2179 /* Always allocate enough space to hold the whole thing so that the
2180 * driver does not need to check the length and bother with partial
2181 * dumping.
2182 */
29dd54b7
AC		 2183 data = vzalloc(tmp.len);
2184 if (!data)
2185 return -ENOMEM;
2186 ret = ops->get_dump_data(dev, &dump, data);
2187 if (ret)
2188 goto out;
2189
c590b5e2
MS		 2190 /* There are two sane possibilities:
2191 * 1. The driver's .get_dump_data() does not touch dump.len.
2192 * 2. Or it may set dump.len to how much it really writes, which
2193 * should be tmp.len (or len if it can do a partial dump).
2194 * In any case respond to userspace with the actual length of data
2195 * it's receiving.
2196 */
2197 WARN_ON(dump.len != len && dump.len != tmp.len);
2198 dump.len = len;
2199
29dd54b7
AC		 2200 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2201 ret = -EFAULT;
2202 goto out;
2203 }
2204 useraddr += offsetof(struct ethtool_dump, data);
2205 if (copy_to_user(useraddr, data, len))
2206 ret = -EFAULT;
2207out:
2208 vfree(data);
2209 return ret;
2210}
2211
c8f3a8c3
RC		 2212static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2213{
2214 int err = 0;
2215 struct ethtool_ts_info info;
2216 const struct ethtool_ops *ops = dev->ethtool_ops;
2217 struct phy_device *phydev = dev->phydev;
2218
2219 memset(&info, 0, sizeof(info));
2220 info.cmd = ETHTOOL_GET_TS_INFO;
2221
2222 if (phydev && phydev->drv && phydev->drv->ts_info) {
c8f3a8c3 2223 err = phydev->drv->ts_info(phydev, &info);
c03a14e8 2224 } else if (ops->get_ts_info) {
c8f3a8c3 2225 err = ops->get_ts_info(dev, &info);
c8f3a8c3
RC		 2226 } else {
2227 info.so_timestamping =
2228 SOF_TIMESTAMPING_RX_SOFTWARE |
2229 SOF_TIMESTAMPING_SOFTWARE;
2230 info.phc_index = -1;
2231 }
2232
2233 if (err)
2234 return err;
2235
2236 if (copy_to_user(useraddr, &info, sizeof(info)))
2237 err = -EFAULT;
2238
2239 return err;
2240}
2241
2f438366
ES		 2242static int __ethtool_get_module_info(struct net_device *dev,
2243 struct ethtool_modinfo *modinfo)
2244{
2245 const struct ethtool_ops *ops = dev->ethtool_ops;
2246 struct phy_device *phydev = dev->phydev;
2247
2248 if (phydev && phydev->drv && phydev->drv->module_info)
2249 return phydev->drv->module_info(phydev, modinfo);
2250
2251 if (ops->get_module_info)
2252 return ops->get_module_info(dev, modinfo);
2253
2254 return -EOPNOTSUPP;
2255}
2256
41c3cb6d
SH		 2257static int ethtool_get_module_info(struct net_device *dev,
2258 void __user *useraddr)
2259{
2260 int ret;
2261 struct ethtool_modinfo modinfo;
41c3cb6d
SH		 2262
2263 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2264 return -EFAULT;
2265
2f438366 2266 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2267 if (ret)
2268 return ret;
2269
2270 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2271 return -EFAULT;
2272
2273 return 0;
2274}
2275
2f438366
ES		 2276static int __ethtool_get_module_eeprom(struct net_device *dev,
2277 struct ethtool_eeprom *ee, u8 *data)
2278{
2279 const struct ethtool_ops *ops = dev->ethtool_ops;
2280 struct phy_device *phydev = dev->phydev;
2281
2282 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2283 return phydev->drv->module_eeprom(phydev, ee, data);
2284
2285 if (ops->get_module_eeprom)
2286 return ops->get_module_eeprom(dev, ee, data);
2287
2288 return -EOPNOTSUPP;
2289}
2290
41c3cb6d
SH		 2291static int ethtool_get_module_eeprom(struct net_device *dev,
2292 void __user *useraddr)
2293{
2294 int ret;
2295 struct ethtool_modinfo modinfo;
41c3cb6d 2296
2f438366 2297 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2298 if (ret)
2299 return ret;
2300
2f438366
ES		 2301 return ethtool_get_any_eeprom(dev, useraddr,
2302 __ethtool_get_module_eeprom,
41c3cb6d
SH		 2303 modinfo.eeprom_len);
2304}
2305
f0db9b07
GV		 2306static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2307{
2308 switch (tuna->id) {
2309 case ETHTOOL_RX_COPYBREAK:
1255a505 2310 case ETHTOOL_TX_COPYBREAK:
f0db9b07
GV		 2311 if (tuna->len != sizeof(u32) ||
2312 tuna->type_id != ETHTOOL_TUNABLE_U32)
2313 return -EINVAL;
2314 break;
e1577c1c
IK		 2315 case ETHTOOL_PFC_PREVENTION_TOUT:
2316 if (tuna->len != sizeof(u16) ||
2317 tuna->type_id != ETHTOOL_TUNABLE_U16)
2318 return -EINVAL;
2319 break;
f0db9b07
GV		 2320 default:
2321 return -EINVAL;
2322 }
2323
2324 return 0;
2325}
2326
2327static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2328{
2329 int ret;
2330 struct ethtool_tunable tuna;
2331 const struct ethtool_ops *ops = dev->ethtool_ops;
2332 void *data;
2333
2334 if (!ops->get_tunable)
2335 return -EOPNOTSUPP;
2336 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2337 return -EFAULT;
2338 ret = ethtool_tunable_valid(&tuna);
2339 if (ret)
2340 return ret;
2341 data = kmalloc(tuna.len, GFP_USER);
2342 if (!data)
2343 return -ENOMEM;
2344 ret = ops->get_tunable(dev, &tuna, data);
2345 if (ret)
2346 goto out;
2347 useraddr += sizeof(tuna);
2348 ret = -EFAULT;
2349 if (copy_to_user(useraddr, data, tuna.len))
2350 goto out;
2351 ret = 0;
2352
2353out:
2354 kfree(data);
2355 return ret;
2356}
2357
2358static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2359{
2360 int ret;
2361 struct ethtool_tunable tuna;
2362 const struct ethtool_ops *ops = dev->ethtool_ops;
2363 void *data;
2364
2365 if (!ops->set_tunable)
2366 return -EOPNOTSUPP;
2367 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2368 return -EFAULT;
2369 ret = ethtool_tunable_valid(&tuna);
2370 if (ret)
2371 return ret;
f0db9b07 2372 useraddr += sizeof(tuna);
30e7e3ec
AV		 2373 data = memdup_user(useraddr, tuna.len);
2374 if (IS_ERR(data))
2375 return PTR_ERR(data);
f0db9b07
GV		 2376 ret = ops->set_tunable(dev, &tuna, data);
2377
f0db9b07
GV		 2378 kfree(data);
2379 return ret;
2380}
2381
421797b1
KL		 2382static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2383 void __user *useraddr,
2384 struct ethtool_per_queue_op *per_queue_opt)
2385{
2386 u32 bit;
2387 int ret;
2388 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2389
2390 if (!dev->ethtool_ops->get_per_queue_coalesce)
2391 return -EOPNOTSUPP;
2392
2393 useraddr += sizeof(*per_queue_opt);
2394
3aa56885
YN		 2395 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2396 MAX_NUM_QUEUE);
421797b1
KL		 2397
2398 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2399 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2400
2401 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2402 if (ret != 0)
2403 return ret;
2404 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2405 return -EFAULT;
2406 useraddr += sizeof(coalesce);
2407 }
2408
2409 return 0;
2410}
2411
f38d138a
KL		 2412static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2413 void __user *useraddr,
2414 struct ethtool_per_queue_op *per_queue_opt)
2415{
2416 u32 bit;
2417 int i, ret = 0;
2418 int n_queue;
2419 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2420 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2421
2422 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2423 (!dev->ethtool_ops->get_per_queue_coalesce))
2424 return -EOPNOTSUPP;
2425
2426 useraddr += sizeof(*per_queue_opt);
2427
3aa56885 2428 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
f38d138a
KL		 2429 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2430 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2431 if (!backup)
2432 return -ENOMEM;
2433
2434 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2435 struct ethtool_coalesce coalesce;
2436
2437 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2438 if (ret != 0)
2439 goto roll_back;
2440
2441 tmp++;
2442
2443 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2444 ret = -EFAULT;
2445 goto roll_back;
2446 }
2447
2448 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2449 if (ret != 0)
2450 goto roll_back;
2451
2452 useraddr += sizeof(coalesce);
2453 }
2454
2455roll_back:
2456 if (ret != 0) {
2457 tmp = backup;
2458 for_each_set_bit(i, queue_mask, bit) {
2459 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2460 tmp++;
2461 }
2462 }
2463 kfree(backup);
2464
2465 return ret;
2466}
2467
ac2c7ad0
KL		 2468static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2469{
2470 struct ethtool_per_queue_op per_queue_opt;
2471
2472 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2473 return -EFAULT;
2474
2475 switch (per_queue_opt.sub_command) {
421797b1
KL		 2476 case ETHTOOL_GCOALESCE:
2477 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
f38d138a
KL		 2478 case ETHTOOL_SCOALESCE:
2479 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
ac2c7ad0
KL		 2480 default:
2481 return -EOPNOTSUPP;
2482 };
2483}
2484
968ad9da
RL		 2485static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2486{
2487 switch (tuna->id) {
65feddd5
RL		 2488 case ETHTOOL_PHY_DOWNSHIFT:
2489 if (tuna->len != sizeof(u8) ||
2490 tuna->type_id != ETHTOOL_TUNABLE_U8)
2491 return -EINVAL;
2492 break;
968ad9da
RL		 2493 default:
2494 return -EINVAL;
2495 }
2496
2497 return 0;
2498}
2499
2500static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2501{
2502 int ret;
2503 struct ethtool_tunable tuna;
2504 struct phy_device *phydev = dev->phydev;
2505 void *data;
2506
2507 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2508 return -EOPNOTSUPP;
2509
2510 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2511 return -EFAULT;
2512 ret = ethtool_phy_tunable_valid(&tuna);
2513 if (ret)
2514 return ret;
2515 data = kmalloc(tuna.len, GFP_USER);
2516 if (!data)
2517 return -ENOMEM;
4b65246b 2518 mutex_lock(&phydev->lock);
968ad9da 2519 ret = phydev->drv->get_tunable(phydev, &tuna, data);
4b65246b 2520 mutex_unlock(&phydev->lock);
968ad9da
RL		 2521 if (ret)
2522 goto out;
2523 useraddr += sizeof(tuna);
2524 ret = -EFAULT;
2525 if (copy_to_user(useraddr, data, tuna.len))
2526 goto out;
2527 ret = 0;
2528
2529out:
2530 kfree(data);
2531 return ret;
2532}
2533
2534static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2535{
2536 int ret;
2537 struct ethtool_tunable tuna;
2538 struct phy_device *phydev = dev->phydev;
2539 void *data;
2540
2541 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2542 return -EOPNOTSUPP;
2543 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2544 return -EFAULT;
2545 ret = ethtool_phy_tunable_valid(&tuna);
2546 if (ret)
2547 return ret;
968ad9da 2548 useraddr += sizeof(tuna);
30e7e3ec
AV		 2549 data = memdup_user(useraddr, tuna.len);
2550 if (IS_ERR(data))
2551 return PTR_ERR(data);
4b65246b 2552 mutex_lock(&phydev->lock);
968ad9da 2553 ret = phydev->drv->set_tunable(phydev, &tuna, data);
4b65246b 2554 mutex_unlock(&phydev->lock);
968ad9da 2555
968ad9da
RL		 2556 kfree(data);
2557 return ret;
2558}
2559
1a5f3da2
VSR		 2560static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2561{
2562 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
a6d50512 2563 int rc;
1a5f3da2
VSR		 2564
2565 if (!dev->ethtool_ops->get_fecparam)
2566 return -EOPNOTSUPP;
2567
a6d50512
EC		 2568 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2569 if (rc)
2570 return rc;
1a5f3da2
VSR		 2571
2572 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2573 return -EFAULT;
2574 return 0;
2575}
2576
2577static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2578{
2579 struct ethtool_fecparam fecparam;
2580
2581 if (!dev->ethtool_ops->set_fecparam)
2582 return -EOPNOTSUPP;
2583
2584 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2585 return -EFAULT;
2586
2587 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2588}
2589
600fed5e 2590/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 2591
881d966b 2592int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 2593{
881d966b 2594 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4 2595 void __user *useraddr = ifr->ifr_data;
ac2c7ad0 2596 u32 ethcmd, sub_cmd;
1da177e4 2597 int rc;
b29d3145 2598 netdev_features_t old_features;
1da177e4 2599
1da177e4
LT		 2600 if (!dev || !netif_device_present(dev))
2601 return -ENODEV;
2602
97f8aefb 2603 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 2604 return -EFAULT;
2605
ac2c7ad0
KL		 2606 if (ethcmd == ETHTOOL_PERQUEUE) {
2607 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2608 return -EFAULT;
2609 } else {
2610 sub_cmd = ethcmd;
2611 }
75f3123c 2612 /* Allow some commands to be done by anyone */
ac2c7ad0 2613 switch (sub_cmd) {
0fdc100b 2614 case ETHTOOL_GSET:
75f3123c 2615 case ETHTOOL_GDRVINFO:
75f3123c 2616 case ETHTOOL_GMSGLVL:
2da45db2 2617 case ETHTOOL_GLINK:
75f3123c
SH		 2618 case ETHTOOL_GCOALESCE:
2619 case ETHTOOL_GRINGPARAM:
2620 case ETHTOOL_GPAUSEPARAM:
2621 case ETHTOOL_GRXCSUM:
2622 case ETHTOOL_GTXCSUM:
2623 case ETHTOOL_GSG:
f80400a2 2624 case ETHTOOL_GSSET_INFO:
75f3123c 2625 case ETHTOOL_GSTRINGS:
2da45db2 2626 case ETHTOOL_GSTATS:
f3a40945 2627 case ETHTOOL_GPHYSTATS:
75f3123c
SH		 2628 case ETHTOOL_GTSO:
2629 case ETHTOOL_GPERMADDR:
75f3123c 2630 case ETHTOOL_GGSO:
1cab819b 2631 case ETHTOOL_GGRO:
339bf024
JG		 2632 case ETHTOOL_GFLAGS:
2633 case ETHTOOL_GPFLAGS:
0853ad66 2634 case ETHTOOL_GRXFH:
59089d8d
SB		 2635 case ETHTOOL_GRXRINGS:
2636 case ETHTOOL_GRXCLSRLCNT:
2637 case ETHTOOL_GRXCLSRULE:
2638 case ETHTOOL_GRXCLSRLALL:
2da45db2 2639 case ETHTOOL_GRXFHINDIR:
3de0b592 2640 case ETHTOOL_GRSSH:
5455c699 2641 case ETHTOOL_GFEATURES:
2da45db2 2642 case ETHTOOL_GCHANNELS:
c8f3a8c3 2643 case ETHTOOL_GET_TS_INFO:
2da45db2 2644 case ETHTOOL_GEEE:
f0db9b07 2645 case ETHTOOL_GTUNABLE:
968ad9da 2646 case ETHTOOL_PHY_GTUNABLE:
8006f6bf 2647 case ETHTOOL_GLINKSETTINGS:
1a5f3da2 2648 case ETHTOOL_GFECPARAM:
75f3123c
SH		 2649 break;
2650 default:
5e1fccc0 2651 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 2652 return -EPERM;
2653 }
2654
97f8aefb 2655 if (dev->ethtool_ops->begin) {
2656 rc = dev->ethtool_ops->begin(dev);
2657 if (rc < 0)
1da177e4 2658 return rc;
97f8aefb 2659 }
d8a33ac4
SH		 2660 old_features = dev->features;
2661
1da177e4
LT		 2662 switch (ethcmd) {
2663 case ETHTOOL_GSET:
2664 rc = ethtool_get_settings(dev, useraddr);
2665 break;
2666 case ETHTOOL_SSET:
2667 rc = ethtool_set_settings(dev, useraddr);
2668 break;
2669 case ETHTOOL_GDRVINFO:
2670 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 2671 break;
2672 case ETHTOOL_GREGS:
2673 rc = ethtool_get_regs(dev, useraddr);
2674 break;
2675 case ETHTOOL_GWOL:
2676 rc = ethtool_get_wol(dev, useraddr);
2677 break;
2678 case ETHTOOL_SWOL:
2679 rc = ethtool_set_wol(dev, useraddr);
2680 break;
2681 case ETHTOOL_GMSGLVL:
13c99b24
JG		 2682 rc = ethtool_get_value(dev, useraddr, ethcmd,
2683 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 2684 break;
2685 case ETHTOOL_SMSGLVL:
13c99b24
JG		 2686 rc = ethtool_set_value_void(dev, useraddr,
2687 dev->ethtool_ops->set_msglevel);
1da177e4 2688 break;
80f12ecc
YM		 2689 case ETHTOOL_GEEE:
2690 rc = ethtool_get_eee(dev, useraddr);
2691 break;
2692 case ETHTOOL_SEEE:
2693 rc = ethtool_set_eee(dev, useraddr);
2694 break;
1da177e4
LT		 2695 case ETHTOOL_NWAY_RST:
2696 rc = ethtool_nway_reset(dev);
2697 break;
2698 case ETHTOOL_GLINK:
e596e6e4 2699 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 2700 break;
2701 case ETHTOOL_GEEPROM:
2702 rc = ethtool_get_eeprom(dev, useraddr);
2703 break;
2704 case ETHTOOL_SEEPROM:
2705 rc = ethtool_set_eeprom(dev, useraddr);
2706 break;
2707 case ETHTOOL_GCOALESCE:
2708 rc = ethtool_get_coalesce(dev, useraddr);
2709 break;
2710 case ETHTOOL_SCOALESCE:
2711 rc = ethtool_set_coalesce(dev, useraddr);
2712 break;
2713 case ETHTOOL_GRINGPARAM:
2714 rc = ethtool_get_ringparam(dev, useraddr);
2715 break;
2716 case ETHTOOL_SRINGPARAM:
2717 rc = ethtool_set_ringparam(dev, useraddr);
2718 break;
2719 case ETHTOOL_GPAUSEPARAM:
2720 rc = ethtool_get_pauseparam(dev, useraddr);
2721 break;
2722 case ETHTOOL_SPAUSEPARAM:
2723 rc = ethtool_set_pauseparam(dev, useraddr);
2724 break;
1da177e4
LT		 2725 case ETHTOOL_TEST:
2726 rc = ethtool_self_test(dev, useraddr);
2727 break;
2728 case ETHTOOL_GSTRINGS:
2729 rc = ethtool_get_strings(dev, useraddr);
2730 break;
2731 case ETHTOOL_PHYS_ID:
2732 rc = ethtool_phys_id(dev, useraddr);
2733 break;
2734 case ETHTOOL_GSTATS:
2735 rc = ethtool_get_stats(dev, useraddr);
2736 break;
a6f9a705
JW		 2737 case ETHTOOL_GPERMADDR:
2738 rc = ethtool_get_perm_addr(dev, useraddr);
2739 break;
3ae7c0b2 2740 case ETHTOOL_GFLAGS:
13c99b24 2741 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 2742 __ethtool_get_flags);
3ae7c0b2
JG		 2743 break;
2744 case ETHTOOL_SFLAGS:
da8ac86c 2745 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 2746 break;
339bf024 2747 case ETHTOOL_GPFLAGS:
13c99b24
JG		 2748 rc = ethtool_get_value(dev, useraddr, ethcmd,
2749 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 2750 break;
2751 case ETHTOOL_SPFLAGS:
13c99b24
JG		 2752 rc = ethtool_set_value(dev, useraddr,
2753 dev->ethtool_ops->set_priv_flags);
339bf024 2754 break;
0853ad66 2755 case ETHTOOL_GRXFH:
59089d8d
SB		 2756 case ETHTOOL_GRXRINGS:
2757 case ETHTOOL_GRXCLSRLCNT:
2758 case ETHTOOL_GRXCLSRULE:
2759 case ETHTOOL_GRXCLSRLALL:
bf988435 2760 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 2761 break;
2762 case ETHTOOL_SRXFH:
59089d8d
SB		 2763 case ETHTOOL_SRXCLSRLDEL:
2764 case ETHTOOL_SRXCLSRLINS:
bf988435 2765 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 2766 break;
05c6a8d7
AK		 2767 case ETHTOOL_FLASHDEV:
2768 rc = ethtool_flash_device(dev, useraddr);
2769 break;
d73d3a8c
BH		 2770 case ETHTOOL_RESET:
2771 rc = ethtool_reset(dev, useraddr);
2772 break;
723b2f57
JG		 2773 case ETHTOOL_GSSET_INFO:
2774 rc = ethtool_get_sset_info(dev, useraddr);
2775 break;
a5b6ee29
BH		 2776 case ETHTOOL_GRXFHINDIR:
2777 rc = ethtool_get_rxfh_indir(dev, useraddr);
2778 break;
2779 case ETHTOOL_SRXFHINDIR:
2780 rc = ethtool_set_rxfh_indir(dev, useraddr);
2781 break;
3de0b592
VD		 2782 case ETHTOOL_GRSSH:
2783 rc = ethtool_get_rxfh(dev, useraddr);
2784 break;
2785 case ETHTOOL_SRSSH:
2786 rc = ethtool_set_rxfh(dev, useraddr);
2787 break;
5455c699
MM		 2788 case ETHTOOL_GFEATURES:
2789 rc = ethtool_get_features(dev, useraddr);
2790 break;
2791 case ETHTOOL_SFEATURES:
2792 rc = ethtool_set_features(dev, useraddr);
2793 break;
0a417704 2794 case ETHTOOL_GTXCSUM:
e83d360d 2795 case ETHTOOL_GRXCSUM:
0a417704
MM		 2796 case ETHTOOL_GSG:
2797 case ETHTOOL_GTSO:
0a417704
MM		 2798 case ETHTOOL_GGSO:
2799 case ETHTOOL_GGRO:
2800 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2801 break;
2802 case ETHTOOL_STXCSUM:
e83d360d 2803 case ETHTOOL_SRXCSUM:
0a417704
MM		 2804 case ETHTOOL_SSG:
2805 case ETHTOOL_STSO:
0a417704
MM		 2806 case ETHTOOL_SGSO:
2807 case ETHTOOL_SGRO:
2808 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2809 break;
8b5933c3 2810 case ETHTOOL_GCHANNELS:
2811 rc = ethtool_get_channels(dev, useraddr);
2812 break;
2813 case ETHTOOL_SCHANNELS:
2814 rc = ethtool_set_channels(dev, useraddr);
2815 break;
29dd54b7
AC		 2816 case ETHTOOL_SET_DUMP:
2817 rc = ethtool_set_dump(dev, useraddr);
2818 break;
2819 case ETHTOOL_GET_DUMP_FLAG:
2820 rc = ethtool_get_dump_flag(dev, useraddr);
2821 break;
2822 case ETHTOOL_GET_DUMP_DATA:
2823 rc = ethtool_get_dump_data(dev, useraddr);
2824 break;
c8f3a8c3
RC		 2825 case ETHTOOL_GET_TS_INFO:
2826 rc = ethtool_get_ts_info(dev, useraddr);
2827 break;
41c3cb6d
SH		 2828 case ETHTOOL_GMODULEINFO:
2829 rc = ethtool_get_module_info(dev, useraddr);
2830 break;
2831 case ETHTOOL_GMODULEEEPROM:
2832 rc = ethtool_get_module_eeprom(dev, useraddr);
2833 break;
f0db9b07
GV		 2834 case ETHTOOL_GTUNABLE:
2835 rc = ethtool_get_tunable(dev, useraddr);
2836 break;
2837 case ETHTOOL_STUNABLE:
2838 rc = ethtool_set_tunable(dev, useraddr);
2839 break;
f3a40945
AL		 2840 case ETHTOOL_GPHYSTATS:
2841 rc = ethtool_get_phy_stats(dev, useraddr);
2842 break;
ac2c7ad0
KL		 2843 case ETHTOOL_PERQUEUE:
2844 rc = ethtool_set_per_queue(dev, useraddr);
2845 break;
3f1ac7a7
DD		 2846 case ETHTOOL_GLINKSETTINGS:
2847 rc = ethtool_get_link_ksettings(dev, useraddr);
2848 break;
2849 case ETHTOOL_SLINKSETTINGS:
2850 rc = ethtool_set_link_ksettings(dev, useraddr);
2851 break;
968ad9da
RL		 2852 case ETHTOOL_PHY_GTUNABLE:
2853 rc = get_phy_tunable(dev, useraddr);
2854 break;
2855 case ETHTOOL_PHY_STUNABLE:
2856 rc = set_phy_tunable(dev, useraddr);
2857 break;
1a5f3da2
VSR		 2858 case ETHTOOL_GFECPARAM:
2859 rc = ethtool_get_fecparam(dev, useraddr);
2860 break;
2861 case ETHTOOL_SFECPARAM:
2862 rc = ethtool_set_fecparam(dev, useraddr);
2863 break;
1da177e4 2864 default:
61a44b9c 2865 rc = -EOPNOTSUPP;
1da177e4 2866 }
4ec93edb 2867
e71a4783 2868 if (dev->ethtool_ops->complete)
1da177e4 2869 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 2870
2871 if (old_features != dev->features)
2872 netdev_features_change(dev);
2873
1da177e4 2874 return rc;
1da177e4 2875}
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