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sock: Hide unused variable when !CONFIG_PROC_FS.
[linux-2.6-block.git] / net / core / ethtool.c
CommitLineData
1da177e4
LT		 1/*
2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
4 *
5 * This file is where we call all the ethtool_ops commands to get
61a44b9c 6 * the information ethtool needs.
1da177e4 7 *
61a44b9c
MW		 8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
1da177e4
LT		 12 */
13
14#include <linux/module.h>
15#include <linux/types.h>
4fc268d2 16#include <linux/capability.h>
1da177e4
LT		 17#include <linux/errno.h>
18#include <linux/ethtool.h>
19#include <linux/netdevice.h>
c8f3a8c3
RC		 20#include <linux/net_tstamp.h>
21#include <linux/phy.h>
d17792eb 22#include <linux/bitops.h>
97f8aefb 23#include <linux/uaccess.h>
73da16c2 24#include <linux/vmalloc.h>
5a0e3ad6 25#include <linux/slab.h>
68f512f2 26#include <linux/rtnetlink.h>
174cd4b1 27#include <linux/sched/signal.h>
960fb622 28#include <linux/net.h>
1da177e4 29
4ec93edb 30/*
1da177e4
LT		 31 * Some useful ethtool_ops methods that're device independent.
32 * If we find that all drivers want to do the same thing here,
33 * we can turn these into dev_() function calls.
34 */
35
36u32 ethtool_op_get_link(struct net_device *dev)
37{
38 return netif_carrier_ok(dev) ? 1 : 0;
39}
97f8aefb 40EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 41
02eacbd0
RC		 42int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
43{
44 info->so_timestamping =
45 SOF_TIMESTAMPING_TX_SOFTWARE |
46 SOF_TIMESTAMPING_RX_SOFTWARE |
47 SOF_TIMESTAMPING_SOFTWARE;
48 info->phc_index = -1;
49 return 0;
50}
51EXPORT_SYMBOL(ethtool_op_get_ts_info);
52
1da177e4
LT		 53/* Handlers for each ethtool command */
54
475414f6 55#define ETHTOOL_DEV_FEATURE_WORDS ((NETDEV_FEATURE_COUNT + 31) / 32)
5455c699 56
9d921549
MM		 57static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN] = {
58 [NETIF_F_SG_BIT] = "tx-scatter-gather",
59 [NETIF_F_IP_CSUM_BIT] = "tx-checksum-ipv4",
9d921549
MM		 60 [NETIF_F_HW_CSUM_BIT] = "tx-checksum-ip-generic",
61 [NETIF_F_IPV6_CSUM_BIT] = "tx-checksum-ipv6",
62 [NETIF_F_HIGHDMA_BIT] = "highdma",
63 [NETIF_F_FRAGLIST_BIT] = "tx-scatter-gather-fraglist",
788dfcac 64 [NETIF_F_HW_VLAN_CTAG_TX_BIT] = "tx-vlan-hw-insert",
9d921549 65
788dfcac
FLVC		 66 [NETIF_F_HW_VLAN_CTAG_RX_BIT] = "rx-vlan-hw-parse",
67 [NETIF_F_HW_VLAN_CTAG_FILTER_BIT] = "rx-vlan-filter",
2d6577f1
DM		 68 [NETIF_F_HW_VLAN_STAG_TX_BIT] = "tx-vlan-stag-hw-insert",
69 [NETIF_F_HW_VLAN_STAG_RX_BIT] = "rx-vlan-stag-hw-parse",
70 [NETIF_F_HW_VLAN_STAG_FILTER_BIT] = "rx-vlan-stag-filter",
9d921549
MM		 71 [NETIF_F_VLAN_CHALLENGED_BIT] = "vlan-challenged",
72 [NETIF_F_GSO_BIT] = "tx-generic-segmentation",
73 [NETIF_F_LLTX_BIT] = "tx-lockless",
74 [NETIF_F_NETNS_LOCAL_BIT] = "netns-local",
75 [NETIF_F_GRO_BIT] = "rx-gro",
76 [NETIF_F_LRO_BIT] = "rx-lro",
77
78 [NETIF_F_TSO_BIT] = "tx-tcp-segmentation",
9d921549
MM		 79 [NETIF_F_GSO_ROBUST_BIT] = "tx-gso-robust",
80 [NETIF_F_TSO_ECN_BIT] = "tx-tcp-ecn-segmentation",
cbc53e08 81 [NETIF_F_TSO_MANGLEID_BIT] = "tx-tcp-mangleid-segmentation",
9d921549
MM		 82 [NETIF_F_TSO6_BIT] = "tx-tcp6-segmentation",
83 [NETIF_F_FSO_BIT] = "tx-fcoe-segmentation",
68c33163 84 [NETIF_F_GSO_GRE_BIT] = "tx-gre-segmentation",
518f213d 85 [NETIF_F_GSO_GRE_CSUM_BIT] = "tx-gre-csum-segmentation",
7e13318d
TH		 86 [NETIF_F_GSO_IPXIP4_BIT] = "tx-ipxip4-segmentation",
87 [NETIF_F_GSO_IPXIP6_BIT] = "tx-ipxip6-segmentation",
73136267 88 [NETIF_F_GSO_UDP_TUNNEL_BIT] = "tx-udp_tnl-segmentation",
518f213d 89 [NETIF_F_GSO_UDP_TUNNEL_CSUM_BIT] = "tx-udp_tnl-csum-segmentation",
802ab55a 90 [NETIF_F_GSO_PARTIAL_BIT] = "tx-gso-partial",
90017acc 91 [NETIF_F_GSO_SCTP_BIT] = "tx-sctp-segmentation",
c7ef8f0c 92 [NETIF_F_GSO_ESP_BIT] = "tx-esp-segmentation",
9d921549
MM		 93
94 [NETIF_F_FCOE_CRC_BIT] = "tx-checksum-fcoe-crc",
53692b1d 95 [NETIF_F_SCTP_CRC_BIT] = "tx-checksum-sctp",
9d921549
MM		 96 [NETIF_F_FCOE_MTU_BIT] = "fcoe-mtu",
97 [NETIF_F_NTUPLE_BIT] = "rx-ntuple-filter",
98 [NETIF_F_RXHASH_BIT] = "rx-hashing",
99 [NETIF_F_RXCSUM_BIT] = "rx-checksum",
100 [NETIF_F_NOCACHE_COPY_BIT] = "tx-nocache-copy",
101 [NETIF_F_LOOPBACK_BIT] = "loopback",
36eabda3 102 [NETIF_F_RXFCS_BIT] = "rx-fcs",
5e0c03c8 103 [NETIF_F_RXALL_BIT] = "rx-all",
a6cc0cfa 104 [NETIF_F_HW_L2FW_DOFFLOAD_BIT] = "l2-fwd-offload",
1c78c64e 105 [NETIF_F_HW_TC_BIT] = "hw-tc-offload",
c7ef8f0c
SK		 106 [NETIF_F_HW_ESP_BIT] = "esp-hw-offload",
107 [NETIF_F_HW_ESP_TX_CSUM_BIT] = "esp-tx-csum-hw-offload",
d764a122 108 [NETIF_F_RX_UDP_TUNNEL_PORT_BIT] = "rx-udp_tunnel-port-offload",
9d921549
MM		 109};
110
892311f6
EP		 111static const char
112rss_hash_func_strings[ETH_RSS_HASH_FUNCS_COUNT][ETH_GSTRING_LEN] = {
113 [ETH_RSS_HASH_TOP_BIT] = "toeplitz",
114 [ETH_RSS_HASH_XOR_BIT] = "xor",
abb521e3 115 [ETH_RSS_HASH_CRC32_BIT] = "crc32",
892311f6
EP		 116};
117
a4244b0c
HHZ		 118static const char
119tunable_strings[__ETHTOOL_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
120 [ETHTOOL_ID_UNSPEC] = "Unspec",
121 [ETHTOOL_RX_COPYBREAK] = "rx-copybreak",
122 [ETHTOOL_TX_COPYBREAK] = "tx-copybreak",
123};
124
968ad9da
RL		 125static const char
126phy_tunable_strings[__ETHTOOL_PHY_TUNABLE_COUNT][ETH_GSTRING_LEN] = {
127 [ETHTOOL_ID_UNSPEC] = "Unspec",
65feddd5 128 [ETHTOOL_PHY_DOWNSHIFT] = "phy-downshift",
968ad9da
RL		 129};
130
5455c699
MM		 131static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
132{
133 struct ethtool_gfeatures cmd = {
134 .cmd = ETHTOOL_GFEATURES,
135 .size = ETHTOOL_DEV_FEATURE_WORDS,
136 };
475414f6 137 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 138 u32 __user *sizeaddr;
139 u32 copy_size;
475414f6
MM		 140 int i;
141
142 /* in case feature bits run out again */
09da71b1 143 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 144
145 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 146 features[i].available = (u32)(dev->hw_features >> (32 * i));
147 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
148 features[i].active = (u32)(dev->features >> (32 * i));
149 features[i].never_changed =
150 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 151 }
5455c699
MM		 152
153 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
154 if (get_user(copy_size, sizeaddr))
155 return -EFAULT;
156
157 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
158 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
159
160 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
161 return -EFAULT;
162 useraddr += sizeof(cmd);
163 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
164 return -EFAULT;
165
166 return 0;
167}
168
169static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
170{
171 struct ethtool_sfeatures cmd;
172 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 173 netdev_features_t wanted = 0, valid = 0;
174 int i, ret = 0;
5455c699
MM		 175
176 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
177 return -EFAULT;
178 useraddr += sizeof(cmd);
179
180 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
181 return -EINVAL;
182
183 if (copy_from_user(features, useraddr, sizeof(features)))
184 return -EFAULT;
185
475414f6 186 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 187 valid |= (netdev_features_t)features[i].valid << (32 * i);
188 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 189 }
190
191 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 192 return -EINVAL;
193
475414f6
MM		 194 if (valid & ~dev->hw_features) {
195 valid &= dev->hw_features;
5455c699
MM		 196 ret |= ETHTOOL_F_UNSUPPORTED;
197 }
198
475414f6
MM		 199 dev->wanted_features &= ~valid;
200 dev->wanted_features |= wanted & valid;
6cb6a27c 201 __netdev_update_features(dev);
5455c699 202
475414f6 203 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 204 ret |= ETHTOOL_F_WISH;
205
206 return ret;
207}
208
f3a40945
AL		 209static int phy_get_sset_count(struct phy_device *phydev)
210{
211 int ret;
212
213 if (phydev->drv->get_sset_count &&
214 phydev->drv->get_strings &&
215 phydev->drv->get_stats) {
216 mutex_lock(&phydev->lock);
217 ret = phydev->drv->get_sset_count(phydev);
218 mutex_unlock(&phydev->lock);
219
220 return ret;
221 }
222
223 return -EOPNOTSUPP;
224}
225
340ae165
MM		 226static int __ethtool_get_sset_count(struct net_device *dev, int sset)
227{
228 const struct ethtool_ops *ops = dev->ethtool_ops;
229
5455c699
MM		 230 if (sset == ETH_SS_FEATURES)
231 return ARRAY_SIZE(netdev_features_strings);
232
892311f6
EP		 233 if (sset == ETH_SS_RSS_HASH_FUNCS)
234 return ARRAY_SIZE(rss_hash_func_strings);
235
a4244b0c
HHZ		 236 if (sset == ETH_SS_TUNABLES)
237 return ARRAY_SIZE(tunable_strings);
238
968ad9da
RL		 239 if (sset == ETH_SS_PHY_TUNABLES)
240 return ARRAY_SIZE(phy_tunable_strings);
241
f3a40945
AL		 242 if (sset == ETH_SS_PHY_STATS) {
243 if (dev->phydev)
244 return phy_get_sset_count(dev->phydev);
245 else
246 return -EOPNOTSUPP;
247 }
248
c03a14e8 249 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 250 return ops->get_sset_count(dev, sset);
251 else
252 return -EOPNOTSUPP;
253}
254
255static void __ethtool_get_strings(struct net_device *dev,
256 u32 stringset, u8 *data)
257{
258 const struct ethtool_ops *ops = dev->ethtool_ops;
259
5455c699
MM		 260 if (stringset == ETH_SS_FEATURES)
261 memcpy(data, netdev_features_strings,
262 sizeof(netdev_features_strings));
892311f6
EP		 263 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
264 memcpy(data, rss_hash_func_strings,
265 sizeof(rss_hash_func_strings));
a4244b0c
HHZ		 266 else if (stringset == ETH_SS_TUNABLES)
267 memcpy(data, tunable_strings, sizeof(tunable_strings));
968ad9da
RL		 268 else if (stringset == ETH_SS_PHY_TUNABLES)
269 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
f3a40945
AL		 270 else if (stringset == ETH_SS_PHY_STATS) {
271 struct phy_device *phydev = dev->phydev;
272
273 if (phydev) {
274 mutex_lock(&phydev->lock);
275 phydev->drv->get_strings(phydev, data);
276 mutex_unlock(&phydev->lock);
277 } else {
278 return;
279 }
280 } else
5455c699
MM		 281 /* ops->get_strings is valid because checked earlier */
282 ops->get_strings(dev, stringset, data);
340ae165
MM		 283}
284
c8f44aff 285static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 286{
287 /* feature masks of legacy discrete ethtool ops */
288
289 switch (eth_cmd) {
290 case ETHTOOL_GTXCSUM:
291 case ETHTOOL_STXCSUM:
a188222b 292 return NETIF_F_CSUM_MASK | NETIF_F_SCTP_CRC;
e83d360d
MM		 293 case ETHTOOL_GRXCSUM:
294 case ETHTOOL_SRXCSUM:
295 return NETIF_F_RXCSUM;
0a417704
MM		 296 case ETHTOOL_GSG:
297 case ETHTOOL_SSG:
298 return NETIF_F_SG;
299 case ETHTOOL_GTSO:
300 case ETHTOOL_STSO:
301 return NETIF_F_ALL_TSO;
0a417704
MM		 302 case ETHTOOL_GGSO:
303 case ETHTOOL_SGSO:
304 return NETIF_F_GSO;
305 case ETHTOOL_GGRO:
306 case ETHTOOL_SGRO:
307 return NETIF_F_GRO;
308 default:
309 BUG();
310 }
311}
312
0a417704
MM		 313static int ethtool_get_one_feature(struct net_device *dev,
314 char __user *useraddr, u32 ethcmd)
315{
c8f44aff 316 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 317 struct ethtool_value edata = {
318 .cmd = ethcmd,
86794881 319 .data = !!(dev->features & mask),
0a417704 320 };
0a417704 321
0a417704
MM		 322 if (copy_to_user(useraddr, &edata, sizeof(edata)))
323 return -EFAULT;
324 return 0;
325}
326
0a417704
MM		 327static int ethtool_set_one_feature(struct net_device *dev,
328 void __user *useraddr, u32 ethcmd)
329{
330 struct ethtool_value edata;
c8f44aff 331 netdev_features_t mask;
0a417704
MM		 332
333 if (copy_from_user(&edata, useraddr, sizeof(edata)))
334 return -EFAULT;
335
86794881
MM		 336 mask = ethtool_get_feature_mask(ethcmd);
337 mask &= dev->hw_features;
bc5787c6
MM		 338 if (!mask)
339 return -EOPNOTSUPP;
86794881 340
bc5787c6
MM		 341 if (edata.data)
342 dev->wanted_features |= mask;
343 else
344 dev->wanted_features &= ~mask;
86794881 345
bc5787c6 346 __netdev_update_features(dev);
86794881 347
bc5787c6
MM		 348 return 0;
349}
350
02b3a552
MM		 351#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
352 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 353#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
354 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
355 NETIF_F_RXHASH)
bc5787c6
MM		 356
357static u32 __ethtool_get_flags(struct net_device *dev)
358{
02b3a552
MM		 359 u32 flags = 0;
360
8a73125c
DF		 361 if (dev->features & NETIF_F_LRO)
362 flags |= ETH_FLAG_LRO;
363 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
364 flags |= ETH_FLAG_RXVLAN;
365 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
366 flags |= ETH_FLAG_TXVLAN;
367 if (dev->features & NETIF_F_NTUPLE)
368 flags |= ETH_FLAG_NTUPLE;
369 if (dev->features & NETIF_F_RXHASH)
370 flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 371
372 return flags;
0a417704
MM		 373}
374
bc5787c6 375static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 376{
c8f44aff 377 netdev_features_t features = 0, changed;
da8ac86c 378
02b3a552 379 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 380 return -EINVAL;
381
8a73125c
DF		 382 if (data & ETH_FLAG_LRO)
383 features |= NETIF_F_LRO;
384 if (data & ETH_FLAG_RXVLAN)
385 features |= NETIF_F_HW_VLAN_CTAG_RX;
386 if (data & ETH_FLAG_TXVLAN)
387 features |= NETIF_F_HW_VLAN_CTAG_TX;
388 if (data & ETH_FLAG_NTUPLE)
389 features |= NETIF_F_NTUPLE;
390 if (data & ETH_FLAG_RXHASH)
391 features |= NETIF_F_RXHASH;
02b3a552 392
da8ac86c 393 /* allow changing only bits set in hw_features */
02b3a552 394 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 395 if (changed & ~dev->hw_features)
396 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
397
398 dev->wanted_features =
02b3a552 399 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 400
6cb6a27c 401 __netdev_update_features(dev);
da8ac86c
MM		 402
403 return 0;
404}
405
5a6cd6de
AB		 406/* Given two link masks, AND them together and save the result in dst. */
407void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
408 struct ethtool_link_ksettings *src)
409{
410 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
411 unsigned int idx = 0;
412
413 for (; idx < size; idx++) {
414 dst->link_modes.supported[idx] &=
415 src->link_modes.supported[idx];
416 dst->link_modes.advertising[idx] &=
417 src->link_modes.advertising[idx];
418 }
419}
420EXPORT_SYMBOL(ethtool_intersect_link_masks);
421
6d62b4d5
PR		 422void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
423 u32 legacy_u32)
3f1ac7a7
DD		 424{
425 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
426 dst[0] = legacy_u32;
427}
6d62b4d5 428EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
3f1ac7a7
DD		 429
430/* return false if src had higher bits set. lower bits always updated. */
6d62b4d5
PR		 431bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
432 const unsigned long *src)
3f1ac7a7
DD		 433{
434 bool retval = true;
435
436 /* TODO: following test will soon always be true */
437 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
438 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
439
440 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
441 bitmap_fill(ext, 32);
442 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
443 if (bitmap_intersects(ext, src,
444 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
445 /* src mask goes beyond bit 31 */
446 retval = false;
447 }
448 }
449 *legacy_u32 = src[0];
450 return retval;
451}
6d62b4d5 452EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
3f1ac7a7
DD		 453
454/* return false if legacy contained non-0 deprecated fields
95491e3c 455 * maxtxpkt/maxrxpkt. rest of ksettings always updated
3f1ac7a7
DD		 456 */
457static bool
458convert_legacy_settings_to_link_ksettings(
459 struct ethtool_link_ksettings *link_ksettings,
460 const struct ethtool_cmd *legacy_settings)
461{
462 bool retval = true;
463
464 memset(link_ksettings, 0, sizeof(*link_ksettings));
465
466 /* This is used to tell users that driver is still using these
467 * deprecated legacy fields, and they should not use
468 * %ETHTOOL_GLINKSETTINGS/%ETHTOOL_SLINKSETTINGS
469 */
95491e3c 470 if (legacy_settings->maxtxpkt ||
3f1ac7a7
DD		 471 legacy_settings->maxrxpkt)
472 retval = false;
473
6d62b4d5 474 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 475 link_ksettings->link_modes.supported,
476 legacy_settings->supported);
6d62b4d5 477 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 478 link_ksettings->link_modes.advertising,
479 legacy_settings->advertising);
6d62b4d5 480 ethtool_convert_legacy_u32_to_link_mode(
3f1ac7a7
DD		 481 link_ksettings->link_modes.lp_advertising,
482 legacy_settings->lp_advertising);
483 link_ksettings->base.speed
484 = ethtool_cmd_speed(legacy_settings);
485 link_ksettings->base.duplex
486 = legacy_settings->duplex;
487 link_ksettings->base.port
488 = legacy_settings->port;
489 link_ksettings->base.phy_address
490 = legacy_settings->phy_address;
491 link_ksettings->base.autoneg
492 = legacy_settings->autoneg;
493 link_ksettings->base.mdio_support
494 = legacy_settings->mdio_support;
495 link_ksettings->base.eth_tp_mdix
496 = legacy_settings->eth_tp_mdix;
497 link_ksettings->base.eth_tp_mdix_ctrl
498 = legacy_settings->eth_tp_mdix_ctrl;
499 return retval;
500}
501
502/* return false if ksettings link modes had higher bits
503 * set. legacy_settings always updated (best effort)
504 */
505static bool
506convert_link_ksettings_to_legacy_settings(
507 struct ethtool_cmd *legacy_settings,
508 const struct ethtool_link_ksettings *link_ksettings)
509{
510 bool retval = true;
511
512 memset(legacy_settings, 0, sizeof(*legacy_settings));
513 /* this also clears the deprecated fields in legacy structure:
514 * __u8 transceiver;
515 * __u32 maxtxpkt;
516 * __u32 maxrxpkt;
517 */
518
6d62b4d5 519 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 520 &legacy_settings->supported,
521 link_ksettings->link_modes.supported);
6d62b4d5 522 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 523 &legacy_settings->advertising,
524 link_ksettings->link_modes.advertising);
6d62b4d5 525 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 526 &legacy_settings->lp_advertising,
527 link_ksettings->link_modes.lp_advertising);
528 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
529 legacy_settings->duplex
530 = link_ksettings->base.duplex;
531 legacy_settings->port
532 = link_ksettings->base.port;
533 legacy_settings->phy_address
534 = link_ksettings->base.phy_address;
535 legacy_settings->autoneg
536 = link_ksettings->base.autoneg;
537 legacy_settings->mdio_support
538 = link_ksettings->base.mdio_support;
539 legacy_settings->eth_tp_mdix
540 = link_ksettings->base.eth_tp_mdix;
541 legacy_settings->eth_tp_mdix_ctrl
542 = link_ksettings->base.eth_tp_mdix_ctrl;
19cab887
FF		 543 legacy_settings->transceiver
544 = link_ksettings->base.transceiver;
3f1ac7a7
DD		 545 return retval;
546}
547
548/* number of 32-bit words to store the user's link mode bitmaps */
549#define __ETHTOOL_LINK_MODE_MASK_NU32 \
550 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
551
552/* layout of the struct passed from/to userland */
553struct ethtool_link_usettings {
554 struct ethtool_link_settings base;
555 struct {
556 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
557 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
558 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
559 } link_modes;
560};
561
562/* Internal kernel helper to query a device ethtool_link_settings.
563 *
564 * Backward compatibility note: for compatibility with legacy drivers
565 * that implement only the ethtool_cmd API, this has to work with both
566 * drivers implementing get_link_ksettings API and drivers
567 * implementing get_settings API. When drivers implement get_settings
568 * and report ethtool_cmd deprecated fields
569 * (transceiver/maxrxpkt/maxtxpkt), these fields are silently ignored
570 * because the resulting struct ethtool_link_settings does not report them.
571 */
572int __ethtool_get_link_ksettings(struct net_device *dev,
573 struct ethtool_link_ksettings *link_ksettings)
574{
575 int err;
576 struct ethtool_cmd cmd;
577
578 ASSERT_RTNL();
579
580 if (dev->ethtool_ops->get_link_ksettings) {
581 memset(link_ksettings, 0, sizeof(*link_ksettings));
582 return dev->ethtool_ops->get_link_ksettings(dev,
583 link_ksettings);
584 }
585
586 /* driver doesn't support %ethtool_link_ksettings API. revert to
587 * legacy %ethtool_cmd API, unless it's not supported either.
588 * TODO: remove when ethtool_ops::get_settings disappears internally
589 */
3237fc63
DD		 590 if (!dev->ethtool_ops->get_settings)
591 return -EOPNOTSUPP;
592
593 memset(&cmd, 0, sizeof(cmd));
594 cmd.cmd = ETHTOOL_GSET;
595 err = dev->ethtool_ops->get_settings(dev, &cmd);
3f1ac7a7
DD		 596 if (err < 0)
597 return err;
598
599 /* we ignore deprecated fields transceiver/maxrxpkt/maxtxpkt
600 */
601 convert_legacy_settings_to_link_ksettings(link_ksettings, &cmd);
602 return err;
603}
604EXPORT_SYMBOL(__ethtool_get_link_ksettings);
605
606/* convert ethtool_link_usettings in user space to a kernel internal
607 * ethtool_link_ksettings. return 0 on success, errno on error.
608 */
609static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
610 const void __user *from)
611{
612 struct ethtool_link_usettings link_usettings;
613
614 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
615 return -EFAULT;
616
617 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
618 bitmap_from_u32array(to->link_modes.supported,
619 __ETHTOOL_LINK_MODE_MASK_NBITS,
620 link_usettings.link_modes.supported,
621 __ETHTOOL_LINK_MODE_MASK_NU32);
622 bitmap_from_u32array(to->link_modes.advertising,
623 __ETHTOOL_LINK_MODE_MASK_NBITS,
624 link_usettings.link_modes.advertising,
625 __ETHTOOL_LINK_MODE_MASK_NU32);
626 bitmap_from_u32array(to->link_modes.lp_advertising,
627 __ETHTOOL_LINK_MODE_MASK_NBITS,
628 link_usettings.link_modes.lp_advertising,
629 __ETHTOOL_LINK_MODE_MASK_NU32);
630
631 return 0;
632}
633
634/* convert a kernel internal ethtool_link_ksettings to
635 * ethtool_link_usettings in user space. return 0 on success, errno on
636 * error.
637 */
638static int
639store_link_ksettings_for_user(void __user *to,
640 const struct ethtool_link_ksettings *from)
641{
642 struct ethtool_link_usettings link_usettings;
643
644 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
645 bitmap_to_u32array(link_usettings.link_modes.supported,
646 __ETHTOOL_LINK_MODE_MASK_NU32,
647 from->link_modes.supported,
648 __ETHTOOL_LINK_MODE_MASK_NBITS);
649 bitmap_to_u32array(link_usettings.link_modes.advertising,
650 __ETHTOOL_LINK_MODE_MASK_NU32,
651 from->link_modes.advertising,
652 __ETHTOOL_LINK_MODE_MASK_NBITS);
653 bitmap_to_u32array(link_usettings.link_modes.lp_advertising,
654 __ETHTOOL_LINK_MODE_MASK_NU32,
655 from->link_modes.lp_advertising,
656 __ETHTOOL_LINK_MODE_MASK_NBITS);
657
658 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
659 return -EFAULT;
660
661 return 0;
662}
663
664/* Query device for its ethtool_link_settings.
665 *
666 * Backward compatibility note: this function must fail when driver
667 * does not implement ethtool::get_link_ksettings, even if legacy
668 * ethtool_ops::get_settings is implemented. This tells new versions
669 * of ethtool that they should use the legacy API %ETHTOOL_GSET for
670 * this driver, so that they can correctly access the ethtool_cmd
671 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
672 * implements ethtool_ops::get_settings anymore.
673 */
674static int ethtool_get_link_ksettings(struct net_device *dev,
675 void __user *useraddr)
676{
677 int err = 0;
678 struct ethtool_link_ksettings link_ksettings;
679
680 ASSERT_RTNL();
681
682 if (!dev->ethtool_ops->get_link_ksettings)
683 return -EOPNOTSUPP;
684
685 /* handle bitmap nbits handshake */
686 if (copy_from_user(&link_ksettings.base, useraddr,
687 sizeof(link_ksettings.base)))
688 return -EFAULT;
689
690 if (__ETHTOOL_LINK_MODE_MASK_NU32
691 != link_ksettings.base.link_mode_masks_nwords) {
692 /* wrong link mode nbits requested */
693 memset(&link_ksettings, 0, sizeof(link_ksettings));
793cf87d 694 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
3f1ac7a7
DD		 695 /* send back number of words required as negative val */
696 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
697 "need too many bits for link modes!");
698 link_ksettings.base.link_mode_masks_nwords
699 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
700
701 /* copy the base fields back to user, not the link
702 * mode bitmaps
703 */
704 if (copy_to_user(useraddr, &link_ksettings.base,
705 sizeof(link_ksettings.base)))
706 return -EFAULT;
707
708 return 0;
709 }
710
711 /* handshake successful: user/kernel agree on
712 * link_mode_masks_nwords
713 */
714
715 memset(&link_ksettings, 0, sizeof(link_ksettings));
716 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
717 if (err < 0)
718 return err;
719
720 /* make sure we tell the right values to user */
721 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
722 link_ksettings.base.link_mode_masks_nwords
723 = __ETHTOOL_LINK_MODE_MASK_NU32;
724
725 return store_link_ksettings_for_user(useraddr, &link_ksettings);
726}
727
728/* Update device ethtool_link_settings.
729 *
730 * Backward compatibility note: this function must fail when driver
731 * does not implement ethtool::set_link_ksettings, even if legacy
732 * ethtool_ops::set_settings is implemented. This tells new versions
733 * of ethtool that they should use the legacy API %ETHTOOL_SSET for
734 * this driver, so that they can correctly update the ethtool_cmd
735 * deprecated fields (transceiver/maxrxpkt/maxtxpkt), until no driver
736 * implements ethtool_ops::get_settings anymore.
737 */
738static int ethtool_set_link_ksettings(struct net_device *dev,
739 void __user *useraddr)
740{
741 int err;
742 struct ethtool_link_ksettings link_ksettings;
743
744 ASSERT_RTNL();
745
746 if (!dev->ethtool_ops->set_link_ksettings)
747 return -EOPNOTSUPP;
748
749 /* make sure nbits field has expected value */
750 if (copy_from_user(&link_ksettings.base, useraddr,
751 sizeof(link_ksettings.base)))
752 return -EFAULT;
753
754 if (__ETHTOOL_LINK_MODE_MASK_NU32
755 != link_ksettings.base.link_mode_masks_nwords)
756 return -EINVAL;
757
758 /* copy the whole structure, now that we know it has expected
759 * format
760 */
761 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
762 if (err)
763 return err;
764
765 /* re-check nwords field, just in case */
766 if (__ETHTOOL_LINK_MODE_MASK_NU32
767 != link_ksettings.base.link_mode_masks_nwords)
768 return -EINVAL;
769
770 return dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
771}
772
3f1ac7a7
DD		 773static void
774warn_incomplete_ethtool_legacy_settings_conversion(const char *details)
775{
776 char name[sizeof(current->comm)];
777
778 pr_info_once("warning: `%s' uses legacy ethtool link settings API, %s\n",
779 get_task_comm(name, current), details);
780}
781
782/* Query device for its ethtool_cmd settings.
783 *
784 * Backward compatibility note: for compatibility with legacy ethtool,
785 * this has to work with both drivers implementing get_link_ksettings
786 * API and drivers implementing get_settings API. When drivers
787 * implement get_link_ksettings and report higher link mode bits, a
788 * kernel warning is logged once (with name of 1st driver/device) to
789 * recommend user to upgrade ethtool, but the command is successful
790 * (only the lower link mode bits reported back to user).
791 */
4bc71cb9
JP		 792static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
793{
4bc71cb9
JP		 794 struct ethtool_cmd cmd;
795
3f1ac7a7
DD		 796 ASSERT_RTNL();
797
798 if (dev->ethtool_ops->get_link_ksettings) {
799 /* First, use link_ksettings API if it is supported */
800 int err;
801 struct ethtool_link_ksettings link_ksettings;
802
803 memset(&link_ksettings, 0, sizeof(link_ksettings));
804 err = dev->ethtool_ops->get_link_ksettings(dev,
805 &link_ksettings);
806 if (err < 0)
807 return err;
808 if (!convert_link_ksettings_to_legacy_settings(&cmd,
809 &link_ksettings))
810 warn_incomplete_ethtool_legacy_settings_conversion(
811 "link modes are only partially reported");
812
813 /* send a sensible cmd tag back to user */
814 cmd.cmd = ETHTOOL_GSET;
815 } else {
3f1ac7a7
DD		 816 /* driver doesn't support %ethtool_link_ksettings
817 * API. revert to legacy %ethtool_cmd API, unless it's
818 * not supported either.
819 */
3237fc63
DD		 820 int err;
821
822 if (!dev->ethtool_ops->get_settings)
823 return -EOPNOTSUPP;
824
825 memset(&cmd, 0, sizeof(cmd));
826 cmd.cmd = ETHTOOL_GSET;
827 err = dev->ethtool_ops->get_settings(dev, &cmd);
3f1ac7a7
DD		 828 if (err < 0)
829 return err;
830 }
1da177e4
LT		 831
832 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
833 return -EFAULT;
3f1ac7a7 834
1da177e4
LT		 835 return 0;
836}
837
3f1ac7a7
DD		 838/* Update device link settings with given ethtool_cmd.
839 *
840 * Backward compatibility note: for compatibility with legacy ethtool,
841 * this has to work with both drivers implementing set_link_ksettings
842 * API and drivers implementing set_settings API. When drivers
843 * implement set_link_ksettings and user's request updates deprecated
844 * ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
845 * warning is logged once (with name of 1st driver/device) to
846 * recommend user to upgrade ethtool, and the request is rejected.
847 */
1da177e4
LT		 848static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
849{
850 struct ethtool_cmd cmd;
851
3f1ac7a7 852 ASSERT_RTNL();
1da177e4
LT		 853
854 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
855 return -EFAULT;
856
3f1ac7a7
DD		 857 /* first, try new %ethtool_link_ksettings API. */
858 if (dev->ethtool_ops->set_link_ksettings) {
859 struct ethtool_link_ksettings link_ksettings;
860
861 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings,
862 &cmd))
863 return -EINVAL;
864
865 link_ksettings.base.cmd = ETHTOOL_SLINKSETTINGS;
866 link_ksettings.base.link_mode_masks_nwords
867 = __ETHTOOL_LINK_MODE_MASK_NU32;
868 return dev->ethtool_ops->set_link_ksettings(dev,
869 &link_ksettings);
870 }
871
872 /* legacy %ethtool_cmd API */
873
874 /* TODO: return -EOPNOTSUPP when ethtool_ops::get_settings
875 * disappears internally
876 */
877
878 if (!dev->ethtool_ops->set_settings)
879 return -EOPNOTSUPP;
880
1da177e4
LT		 881 return dev->ethtool_ops->set_settings(dev, &cmd);
882}
883
97f8aefb 884static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
885 void __user *useraddr)
1da177e4
LT		 886{
887 struct ethtool_drvinfo info;
76fd8593 888 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 889
1da177e4
LT		 890 memset(&info, 0, sizeof(info));
891 info.cmd = ETHTOOL_GDRVINFO;
c03a14e8 892 if (ops->get_drvinfo) {
01414802
BH		 893 ops->get_drvinfo(dev, &info);
894 } else if (dev->dev.parent && dev->dev.parent->driver) {
895 strlcpy(info.bus_info, dev_name(dev->dev.parent),
896 sizeof(info.bus_info));
897 strlcpy(info.driver, dev->dev.parent->driver->name,
898 sizeof(info.driver));
899 } else {
900 return -EOPNOTSUPP;
901 }
1da177e4 902
723b2f57
JG		 903 /*
904 * this method of obtaining string set info is deprecated;
d17792eb 905 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 906 */
c03a14e8 907 if (ops->get_sset_count) {
ff03d49f
JG		 908 int rc;
909
910 rc = ops->get_sset_count(dev, ETH_SS_TEST);
911 if (rc >= 0)
912 info.testinfo_len = rc;
913 rc = ops->get_sset_count(dev, ETH_SS_STATS);
914 if (rc >= 0)
915 info.n_stats = rc;
339bf024
JG		 916 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
917 if (rc >= 0)
918 info.n_priv_flags = rc;
ff03d49f 919 }
c03a14e8 920 if (ops->get_regs_len)
1da177e4 921 info.regdump_len = ops->get_regs_len(dev);
c03a14e8 922 if (ops->get_eeprom_len)
1da177e4
LT		 923 info.eedump_len = ops->get_eeprom_len(dev);
924
925 if (copy_to_user(useraddr, &info, sizeof(info)))
926 return -EFAULT;
927 return 0;
928}
929
f5c445ed 930static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 931 void __user *useraddr)
723b2f57
JG		 932{
933 struct ethtool_sset_info info;
723b2f57
JG		 934 u64 sset_mask;
935 int i, idx = 0, n_bits = 0, ret, rc;
936 u32 *info_buf = NULL;
937
723b2f57
JG		 938 if (copy_from_user(&info, useraddr, sizeof(info)))
939 return -EFAULT;
940
941 /* store copy of mask, because we zero struct later on */
942 sset_mask = info.sset_mask;
943 if (!sset_mask)
944 return 0;
945
946 /* calculate size of return buffer */
d17792eb 947 n_bits = hweight64(sset_mask);
723b2f57
JG		 948
949 memset(&info, 0, sizeof(info));
950 info.cmd = ETHTOOL_GSSET_INFO;
951
952 info_buf = kzalloc(n_bits * sizeof(u32), GFP_USER);
953 if (!info_buf)
954 return -ENOMEM;
955
956 /*
957 * fill return buffer based on input bitmask and successful
958 * get_sset_count return
959 */
960 for (i = 0; i < 64; i++) {
961 if (!(sset_mask & (1ULL << i)))
962 continue;
963
340ae165 964 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 965 if (rc >= 0) {
966 info.sset_mask |= (1ULL << i);
967 info_buf[idx++] = rc;
968 }
969 }
970
971 ret = -EFAULT;
972 if (copy_to_user(useraddr, &info, sizeof(info)))
973 goto out;
974
975 useraddr += offsetof(struct ethtool_sset_info, data);
976 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
977 goto out;
978
979 ret = 0;
980
981out:
982 kfree(info_buf);
983 return ret;
984}
985
97f8aefb 986static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 987 u32 cmd, void __user *useraddr)
0853ad66 988{
bf988435
BH		 989 struct ethtool_rxnfc info;
990 size_t info_size = sizeof(info);
55664f32 991 int rc;
0853ad66 992
59089d8d 993 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 994 return -EOPNOTSUPP;
995
bf988435
BH		 996 /* struct ethtool_rxnfc was originally defined for
997 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
998 * members. User-space might still be using that
999 * definition. */
1000 if (cmd == ETHTOOL_SRXFH)
1001 info_size = (offsetof(struct ethtool_rxnfc, data) +
1002 sizeof(info.data));
1003
1004 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 1005 return -EFAULT;
1006
55664f32
BH		 1007 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
1008 if (rc)
1009 return rc;
1010
1011 if (cmd == ETHTOOL_SRXCLSRLINS &&
1012 copy_to_user(useraddr, &info, info_size))
1013 return -EFAULT;
1014
1015 return 0;
0853ad66
SB		 1016}
1017
97f8aefb 1018static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 1019 u32 cmd, void __user *useraddr)
0853ad66
SB		 1020{
1021 struct ethtool_rxnfc info;
bf988435 1022 size_t info_size = sizeof(info);
59089d8d
SB		 1023 const struct ethtool_ops *ops = dev->ethtool_ops;
1024 int ret;
1025 void *rule_buf = NULL;
0853ad66 1026
59089d8d 1027 if (!ops->get_rxnfc)
0853ad66
SB		 1028 return -EOPNOTSUPP;
1029
bf988435
BH		 1030 /* struct ethtool_rxnfc was originally defined for
1031 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
1032 * members. User-space might still be using that
1033 * definition. */
1034 if (cmd == ETHTOOL_GRXFH)
1035 info_size = (offsetof(struct ethtool_rxnfc, data) +
1036 sizeof(info.data));
1037
1038 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 1039 return -EFAULT;
1040
59089d8d
SB		 1041 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1042 if (info.rule_cnt > 0) {
db048b69 1043 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
ae6df5f9 1044 rule_buf = kzalloc(info.rule_cnt * sizeof(u32),
db048b69 1045 GFP_USER);
59089d8d
SB		 1046 if (!rule_buf)
1047 return -ENOMEM;
1048 }
1049 }
0853ad66 1050
59089d8d
SB		 1051 ret = ops->get_rxnfc(dev, &info, rule_buf);
1052 if (ret < 0)
1053 goto err_out;
1054
1055 ret = -EFAULT;
bf988435 1056 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 1057 goto err_out;
1058
1059 if (rule_buf) {
1060 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
1061 if (copy_to_user(useraddr, rule_buf,
1062 info.rule_cnt * sizeof(u32)))
1063 goto err_out;
1064 }
1065 ret = 0;
1066
1067err_out:
c9caceca 1068 kfree(rule_buf);
59089d8d
SB		 1069
1070 return ret;
0853ad66
SB		 1071}
1072
3de0b592
VD		 1073static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1074 struct ethtool_rxnfc *rx_rings,
1075 u32 size)
1076{
fb95cd8d 1077 int i;
3de0b592
VD		 1078
1079 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
fb95cd8d 1080 return -EFAULT;
3de0b592
VD		 1081
1082 /* Validate ring indices */
fb95cd8d
BH		 1083 for (i = 0; i < size; i++)
1084 if (indir[i] >= rx_rings->data)
1085 return -EINVAL;
1086
1087 return 0;
3de0b592
VD		 1088}
1089
ba905f5e 1090u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
960fb622
ED		 1091
1092void netdev_rss_key_fill(void *buffer, size_t len)
1093{
1094 BUG_ON(len > sizeof(netdev_rss_key));
1095 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1096 memcpy(buffer, netdev_rss_key, len);
1097}
1098EXPORT_SYMBOL(netdev_rss_key_fill);
1099
d4ab4286
KJ		 1100static int ethtool_get_max_rxfh_channel(struct net_device *dev, u32 *max)
1101{
1102 u32 dev_size, current_max = 0;
1103 u32 *indir;
1104 int ret;
1105
1106 if (!dev->ethtool_ops->get_rxfh_indir_size ||
1107 !dev->ethtool_ops->get_rxfh)
1108 return -EOPNOTSUPP;
1109 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1110 if (dev_size == 0)
1111 return -EOPNOTSUPP;
1112
1113 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
1114 if (!indir)
1115 return -ENOMEM;
1116
1117 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
1118 if (ret)
1119 goto out;
1120
1121 while (dev_size--)
1122 current_max = max(current_max, indir[dev_size]);
1123
1124 *max = current_max;
1125
1126out:
1127 kfree(indir);
1128 return ret;
1129}
1130
a5b6ee29
BH		 1131static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1132 void __user *useraddr)
1133{
7850f63f
BH		 1134 u32 user_size, dev_size;
1135 u32 *indir;
a5b6ee29
BH		 1136 int ret;
1137
7850f63f 1138 if (!dev->ethtool_ops->get_rxfh_indir_size ||
fe62d001 1139 !dev->ethtool_ops->get_rxfh)
7850f63f
BH		 1140 return -EOPNOTSUPP;
1141 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1142 if (dev_size == 0)
a5b6ee29
BH		 1143 return -EOPNOTSUPP;
1144
7850f63f 1145 if (copy_from_user(&user_size,
a5b6ee29 1146 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1147 sizeof(user_size)))
a5b6ee29
BH		 1148 return -EFAULT;
1149
7850f63f
BH		 1150 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1151 &dev_size, sizeof(dev_size)))
1152 return -EFAULT;
1153
1154 /* If the user buffer size is 0, this is just a query for the
1155 * device table size. Otherwise, if it's smaller than the
1156 * device table size it's an error.
1157 */
1158 if (user_size < dev_size)
1159 return user_size == 0 ? 0 : -EINVAL;
1160
1161 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1162 if (!indir)
1163 return -ENOMEM;
1164
892311f6 1165 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
a5b6ee29
BH		 1166 if (ret)
1167 goto out;
1168
7850f63f
BH		 1169 if (copy_to_user(useraddr +
1170 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1171 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 1172 ret = -EFAULT;
1173
1174out:
1175 kfree(indir);
1176 return ret;
1177}
1178
1179static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1180 void __user *useraddr)
1181{
7850f63f
BH		 1182 struct ethtool_rxnfc rx_rings;
1183 u32 user_size, dev_size, i;
1184 u32 *indir;
c03a14e8 1185 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29 1186 int ret;
3de0b592 1187 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
a5b6ee29 1188
fe62d001 1189 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
c03a14e8 1190 !ops->get_rxnfc)
7850f63f 1191 return -EOPNOTSUPP;
c03a14e8
JP		 1192
1193 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 1194 if (dev_size == 0)
a5b6ee29
BH		 1195 return -EOPNOTSUPP;
1196
7850f63f 1197 if (copy_from_user(&user_size,
a5b6ee29 1198 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1199 sizeof(user_size)))
a5b6ee29
BH		 1200 return -EFAULT;
1201
278bc429 1202 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 1203 return -EINVAL;
1204
1205 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1206 if (!indir)
1207 return -ENOMEM;
1208
7850f63f 1209 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 1210 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 1211 if (ret)
1212 goto out;
278bc429
BH		 1213
1214 if (user_size == 0) {
1215 for (i = 0; i < dev_size; i++)
1216 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1217 } else {
3de0b592
VD		 1218 ret = ethtool_copy_validate_indir(indir,
1219 useraddr + ringidx_offset,
1220 &rx_rings,
1221 dev_size);
1222 if (ret)
1223 goto out;
1224 }
1225
892311f6 1226 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
d4ab4286
KJ		 1227 if (ret)
1228 goto out;
1229
1230 /* indicate whether rxfh was set to default */
1231 if (user_size == 0)
1232 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1233 else
1234 dev->priv_flags |= IFF_RXFH_CONFIGURED;
3de0b592
VD		 1235
1236out:
1237 kfree(indir);
1238 return ret;
1239}
1240
1241static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1242 void __user *useraddr)
1243{
1244 int ret;
1245 const struct ethtool_ops *ops = dev->ethtool_ops;
f062a384 1246 u32 user_indir_size, user_key_size;
3de0b592 1247 u32 dev_indir_size = 0, dev_key_size = 0;
f062a384 1248 struct ethtool_rxfh rxfh;
3de0b592 1249 u32 total_size;
f062a384 1250 u32 indir_bytes;
3de0b592 1251 u32 *indir = NULL;
892311f6 1252 u8 dev_hfunc = 0;
3de0b592
VD		 1253 u8 *hkey = NULL;
1254 u8 *rss_config;
1255
892311f6 1256 if (!ops->get_rxfh)
3de0b592
VD		 1257 return -EOPNOTSUPP;
1258
1259 if (ops->get_rxfh_indir_size)
1260 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592
VD		 1261 if (ops->get_rxfh_key_size)
1262 dev_key_size = ops->get_rxfh_key_size(dev);
1263
f062a384 1264 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592 1265 return -EFAULT;
f062a384
BH		 1266 user_indir_size = rxfh.indir_size;
1267 user_key_size = rxfh.key_size;
3de0b592 1268
f062a384 1269 /* Check that reserved fields are 0 for now */
892311f6
EP		 1270 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1271 rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384
BH		 1272 return -EINVAL;
1273
1274 rxfh.indir_size = dev_indir_size;
1275 rxfh.key_size = dev_key_size;
1276 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
3de0b592
VD		 1277 return -EFAULT;
1278
3de0b592
VD		 1279 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1280 (user_key_size && (user_key_size != dev_key_size)))
1281 return -EINVAL;
1282
1283 indir_bytes = user_indir_size * sizeof(indir[0]);
1284 total_size = indir_bytes + user_key_size;
1285 rss_config = kzalloc(total_size, GFP_USER);
1286 if (!rss_config)
1287 return -ENOMEM;
1288
1289 if (user_indir_size)
1290 indir = (u32 *)rss_config;
1291
1292 if (user_key_size)
1293 hkey = rss_config + indir_bytes;
1294
892311f6
EP		 1295 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
1296 if (ret)
1297 goto out;
3de0b592 1298
892311f6
EP		 1299 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1300 &dev_hfunc, sizeof(rxfh.hfunc))) {
1301 ret = -EFAULT;
1302 } else if (copy_to_user(useraddr +
1303 offsetof(struct ethtool_rxfh, rss_config[0]),
1304 rss_config, total_size)) {
1305 ret = -EFAULT;
1306 }
1307out:
3de0b592
VD		 1308 kfree(rss_config);
1309
1310 return ret;
1311}
1312
1313static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1314 void __user *useraddr)
1315{
1316 int ret;
1317 const struct ethtool_ops *ops = dev->ethtool_ops;
1318 struct ethtool_rxnfc rx_rings;
f062a384
BH		 1319 struct ethtool_rxfh rxfh;
1320 u32 dev_indir_size = 0, dev_key_size = 0, i;
3de0b592
VD		 1321 u32 *indir = NULL, indir_bytes = 0;
1322 u8 *hkey = NULL;
1323 u8 *rss_config;
3de0b592
VD		 1324 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
1325
892311f6 1326 if (!ops->get_rxnfc || !ops->set_rxfh)
3de0b592
VD		 1327 return -EOPNOTSUPP;
1328
1329 if (ops->get_rxfh_indir_size)
1330 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592 1331 if (ops->get_rxfh_key_size)
d340c862 1332 dev_key_size = ops->get_rxfh_key_size(dev);
3de0b592 1333
f062a384 1334 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592
VD		 1335 return -EFAULT;
1336
f062a384 1337 /* Check that reserved fields are 0 for now */
892311f6
EP		 1338 if (rxfh.rss_context || rxfh.rsvd8[0] || rxfh.rsvd8[1] ||
1339 rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384
BH		 1340 return -EINVAL;
1341
892311f6
EP		 1342 /* If either indir, hash key or function is valid, proceed further.
1343 * Must request at least one change: indir size, hash key or function.
3de0b592 1344 */
f062a384
BH		 1345 if ((rxfh.indir_size &&
1346 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1347 rxfh.indir_size != dev_indir_size) ||
1348 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1349 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
892311f6 1350 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
3de0b592
VD		 1351 return -EINVAL;
1352
f062a384 1353 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
3de0b592
VD		 1354 indir_bytes = dev_indir_size * sizeof(indir[0]);
1355
f062a384 1356 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
3de0b592
VD		 1357 if (!rss_config)
1358 return -ENOMEM;
1359
1360 rx_rings.cmd = ETHTOOL_GRXRINGS;
1361 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1362 if (ret)
1363 goto out;
1364
f062a384
BH		 1365 /* rxfh.indir_size == 0 means reset the indir table to default.
1366 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
3de0b592 1367 */
f062a384
BH		 1368 if (rxfh.indir_size &&
1369 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
3de0b592
VD		 1370 indir = (u32 *)rss_config;
1371 ret = ethtool_copy_validate_indir(indir,
1372 useraddr + rss_cfg_offset,
1373 &rx_rings,
f062a384 1374 rxfh.indir_size);
3de0b592 1375 if (ret)
7850f63f 1376 goto out;
f062a384 1377 } else if (rxfh.indir_size == 0) {
3de0b592
VD		 1378 indir = (u32 *)rss_config;
1379 for (i = 0; i < dev_indir_size; i++)
1380 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1381 }
278bc429 1382
f062a384 1383 if (rxfh.key_size) {
3de0b592
VD		 1384 hkey = rss_config + indir_bytes;
1385 if (copy_from_user(hkey,
1386 useraddr + rss_cfg_offset + indir_bytes,
f062a384 1387 rxfh.key_size)) {
3de0b592
VD		 1388 ret = -EFAULT;
1389 goto out;
278bc429 1390 }
7850f63f
BH		 1391 }
1392
892311f6 1393 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
d4ab4286
KJ		 1394 if (ret)
1395 goto out;
1396
1397 /* indicate whether rxfh was set to default */
1398 if (rxfh.indir_size == 0)
1399 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1400 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1401 dev->priv_flags |= IFF_RXFH_CONFIGURED;
a5b6ee29
BH		 1402
1403out:
3de0b592 1404 kfree(rss_config);
a5b6ee29
BH		 1405 return ret;
1406}
1407
1da177e4
LT		 1408static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1409{
1410 struct ethtool_regs regs;
76fd8593 1411 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1412 void *regbuf;
1413 int reglen, ret;
1414
1415 if (!ops->get_regs || !ops->get_regs_len)
1416 return -EOPNOTSUPP;
1417
1418 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1419 return -EFAULT;
1420
1421 reglen = ops->get_regs_len(dev);
1422 if (regs.len > reglen)
1423 regs.len = reglen;
1424
3808d348
SG		 1425 regbuf = NULL;
1426 if (reglen) {
1427 regbuf = vzalloc(reglen);
1428 if (!regbuf)
1429 return -ENOMEM;
1430 }
1da177e4
LT		 1431
1432 ops->get_regs(dev, &regs, regbuf);
1433
1434 ret = -EFAULT;
1435 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1436 goto out;
1437 useraddr += offsetof(struct ethtool_regs, data);
67ae7cf1 1438 if (regbuf && copy_to_user(useraddr, regbuf, regs.len))
1da177e4
LT		 1439 goto out;
1440 ret = 0;
1441
1442 out:
a77f5db3 1443 vfree(regbuf);
1da177e4
LT		 1444 return ret;
1445}
1446
d73d3a8c
BH		 1447static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1448{
1449 struct ethtool_value reset;
1450 int ret;
1451
1452 if (!dev->ethtool_ops->reset)
1453 return -EOPNOTSUPP;
1454
1455 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1456 return -EFAULT;
1457
1458 ret = dev->ethtool_ops->reset(dev, &reset.data);
1459 if (ret)
1460 return ret;
1461
1462 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1463 return -EFAULT;
1464 return 0;
1465}
1466
1da177e4
LT		 1467static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1468{
8e557421 1469 struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
1da177e4
LT		 1470
1471 if (!dev->ethtool_ops->get_wol)
1472 return -EOPNOTSUPP;
1473
1474 dev->ethtool_ops->get_wol(dev, &wol);
1475
1476 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1477 return -EFAULT;
1478 return 0;
1479}
1480
1481static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1482{
1483 struct ethtool_wolinfo wol;
1484
1485 if (!dev->ethtool_ops->set_wol)
1486 return -EOPNOTSUPP;
1487
1488 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1489 return -EFAULT;
1490
1491 return dev->ethtool_ops->set_wol(dev, &wol);
1492}
1493
80f12ecc
YM		 1494static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1495{
1496 struct ethtool_eee edata;
1497 int rc;
1498
1499 if (!dev->ethtool_ops->get_eee)
1500 return -EOPNOTSUPP;
1501
1502 memset(&edata, 0, sizeof(struct ethtool_eee));
1503 edata.cmd = ETHTOOL_GEEE;
1504 rc = dev->ethtool_ops->get_eee(dev, &edata);
1505
1506 if (rc)
1507 return rc;
1508
1509 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1510 return -EFAULT;
1511
1512 return 0;
1513}
1514
1515static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1516{
1517 struct ethtool_eee edata;
1518
1519 if (!dev->ethtool_ops->set_eee)
1520 return -EOPNOTSUPP;
1521
1522 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1523 return -EFAULT;
1524
1525 return dev->ethtool_ops->set_eee(dev, &edata);
1526}
1527
1da177e4
LT		 1528static int ethtool_nway_reset(struct net_device *dev)
1529{
1530 if (!dev->ethtool_ops->nway_reset)
1531 return -EOPNOTSUPP;
1532
1533 return dev->ethtool_ops->nway_reset(dev);
1534}
1535
e596e6e4
BH		 1536static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1537{
1538 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
1539
1540 if (!dev->ethtool_ops->get_link)
1541 return -EOPNOTSUPP;
1542
1543 edata.data = netif_running(dev) && dev->ethtool_ops->get_link(dev);
1544
1545 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1546 return -EFAULT;
1547 return 0;
1548}
1549
081d094e
BH		 1550static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1551 int (*getter)(struct net_device *,
1552 struct ethtool_eeprom *, u8 *),
1553 u32 total_len)
1da177e4
LT		 1554{
1555 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 1556 void __user *userbuf = useraddr + sizeof(eeprom);
1557 u32 bytes_remaining;
1da177e4 1558 u8 *data;
b131dd5d 1559 int ret = 0;
1da177e4 1560
1da177e4
LT		 1561 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1562 return -EFAULT;
1563
1564 /* Check for wrap and zero */
1565 if (eeprom.offset + eeprom.len <= eeprom.offset)
1566 return -EINVAL;
1567
1568 /* Check for exceeding total eeprom len */
081d094e 1569 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 1570 return -EINVAL;
1571
b131dd5d 1572 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1573 if (!data)
1574 return -ENOMEM;
1575
b131dd5d
MSB		 1576 bytes_remaining = eeprom.len;
1577 while (bytes_remaining > 0) {
1578 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1579
081d094e 1580 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 1581 if (ret)
1582 break;
1583 if (copy_to_user(userbuf, data, eeprom.len)) {
1584 ret = -EFAULT;
1585 break;
1586 }
1587 userbuf += eeprom.len;
1588 eeprom.offset += eeprom.len;
1589 bytes_remaining -= eeprom.len;
1590 }
1da177e4 1591
c5835df9
MSB		 1592 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1593 eeprom.offset -= eeprom.len;
1594 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1595 ret = -EFAULT;
1596
1da177e4
LT		 1597 kfree(data);
1598 return ret;
1599}
1600
081d094e
BH		 1601static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1602{
1603 const struct ethtool_ops *ops = dev->ethtool_ops;
1604
e0fb6fb6
GR		 1605 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1606 !ops->get_eeprom_len(dev))
081d094e
BH		 1607 return -EOPNOTSUPP;
1608
1609 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1610 ops->get_eeprom_len(dev));
1611}
1612
1da177e4
LT		 1613static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1614{
1615 struct ethtool_eeprom eeprom;
76fd8593 1616 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1617 void __user *userbuf = useraddr + sizeof(eeprom);
1618 u32 bytes_remaining;
1da177e4 1619 u8 *data;
b131dd5d 1620 int ret = 0;
1da177e4 1621
e0fb6fb6
GR		 1622 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1623 !ops->get_eeprom_len(dev))
1da177e4
LT		 1624 return -EOPNOTSUPP;
1625
1626 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1627 return -EFAULT;
1628
1629 /* Check for wrap and zero */
1630 if (eeprom.offset + eeprom.len <= eeprom.offset)
1631 return -EINVAL;
1632
1633 /* Check for exceeding total eeprom len */
1634 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1635 return -EINVAL;
1636
b131dd5d 1637 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1638 if (!data)
1639 return -ENOMEM;
1640
b131dd5d
MSB		 1641 bytes_remaining = eeprom.len;
1642 while (bytes_remaining > 0) {
1643 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1644
1645 if (copy_from_user(data, userbuf, eeprom.len)) {
1646 ret = -EFAULT;
1647 break;
1648 }
1649 ret = ops->set_eeprom(dev, &eeprom, data);
1650 if (ret)
1651 break;
1652 userbuf += eeprom.len;
1653 eeprom.offset += eeprom.len;
1654 bytes_remaining -= eeprom.len;
1655 }
1da177e4 1656
1da177e4
LT		 1657 kfree(data);
1658 return ret;
1659}
1660
97f8aefb 1661static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1662 void __user *useraddr)
1da177e4 1663{
8e557421 1664 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
1da177e4
LT		 1665
1666 if (!dev->ethtool_ops->get_coalesce)
1667 return -EOPNOTSUPP;
1668
1669 dev->ethtool_ops->get_coalesce(dev, &coalesce);
1670
1671 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1672 return -EFAULT;
1673 return 0;
1674}
1675
97f8aefb 1676static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1677 void __user *useraddr)
1da177e4
LT		 1678{
1679 struct ethtool_coalesce coalesce;
1680
fa04ae5c 1681 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1682 return -EOPNOTSUPP;
1683
1684 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1685 return -EFAULT;
1686
1687 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
1688}
1689
1690static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1691{
8e557421 1692 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1693
1694 if (!dev->ethtool_ops->get_ringparam)
1695 return -EOPNOTSUPP;
1696
1697 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1698
1699 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1700 return -EFAULT;
1701 return 0;
1702}
1703
1704static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1705{
1706 struct ethtool_ringparam ringparam;
1707
1708 if (!dev->ethtool_ops->set_ringparam)
1709 return -EOPNOTSUPP;
1710
1711 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1712 return -EFAULT;
1713
1714 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
1715}
1716
8b5933c3 1717static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1718 void __user *useraddr)
1719{
1720 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1721
1722 if (!dev->ethtool_ops->get_channels)
1723 return -EOPNOTSUPP;
1724
1725 dev->ethtool_ops->get_channels(dev, &channels);
1726
1727 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1728 return -EFAULT;
1729 return 0;
1730}
1731
1732static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1733 void __user *useraddr)
1734{
31a86d13 1735 struct ethtool_channels channels, max = { .cmd = ETHTOOL_GCHANNELS };
d4ab4286 1736 u32 max_rx_in_use = 0;
8b5933c3 1737
8bf36862 1738 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
8b5933c3 1739 return -EOPNOTSUPP;
1740
1741 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1742 return -EFAULT;
1743
8bf36862
KJ		 1744 dev->ethtool_ops->get_channels(dev, &max);
1745
1746 /* ensure new counts are within the maximums */
1747 if ((channels.rx_count > max.max_rx) ||
1748 (channels.tx_count > max.max_tx) ||
1749 (channels.combined_count > max.max_combined) ||
1750 (channels.other_count > max.max_other))
1751 return -EINVAL;
1752
d4ab4286
KJ		 1753 /* ensure the new Rx count fits within the configured Rx flow
1754 * indirection table settings */
1755 if (netif_is_rxfh_configured(dev) &&
1756 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1757 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1758 return -EINVAL;
1759
8b5933c3 1760 return dev->ethtool_ops->set_channels(dev, &channels);
1761}
1762
1da177e4
LT		 1763static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1764{
1765 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
1766
1767 if (!dev->ethtool_ops->get_pauseparam)
1768 return -EOPNOTSUPP;
1769
1770 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1771
1772 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1773 return -EFAULT;
1774 return 0;
1775}
1776
1777static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1778{
1779 struct ethtool_pauseparam pauseparam;
1780
e1b90c41 1781 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1782 return -EOPNOTSUPP;
1783
1784 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1785 return -EFAULT;
1786
1787 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1788}
1789
1da177e4
LT		 1790static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1791{
1792 struct ethtool_test test;
76fd8593 1793 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1794 u64 *data;
ff03d49f 1795 int ret, test_len;
1da177e4 1796
a9828ec6 1797 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1798 return -EOPNOTSUPP;
1799
a9828ec6 1800 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1801 if (test_len < 0)
1802 return test_len;
1803 WARN_ON(test_len == 0);
1804
1da177e4
LT		 1805 if (copy_from_user(&test, useraddr, sizeof(test)))
1806 return -EFAULT;
1807
ff03d49f
JG		 1808 test.len = test_len;
1809 data = kmalloc(test_len * sizeof(u64), GFP_USER);
1da177e4
LT		 1810 if (!data)
1811 return -ENOMEM;
1812
1813 ops->self_test(dev, &test, data);
1814
1815 ret = -EFAULT;
1816 if (copy_to_user(useraddr, &test, sizeof(test)))
1817 goto out;
1818 useraddr += sizeof(test);
1819 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1820 goto out;
1821 ret = 0;
1822
1823 out:
1824 kfree(data);
1825 return ret;
1826}
1827
1828static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1829{
1830 struct ethtool_gstrings gstrings;
1da177e4
LT		 1831 u8 *data;
1832 int ret;
1833
1da177e4
LT		 1834 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1835 return -EFAULT;
1836
340ae165 1837 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1838 if (ret < 0)
1839 return ret;
4d1ceea8
AS		 1840 if (ret > S32_MAX / ETH_GSTRING_LEN)
1841 return -ENOMEM;
1842 WARN_ON_ONCE(!ret);
a9828ec6
BH		 1843
1844 gstrings.len = ret;
4d1ceea8
AS		 1845 data = vzalloc(gstrings.len * ETH_GSTRING_LEN);
1846 if (gstrings.len && !data)
1da177e4
LT		 1847 return -ENOMEM;
1848
340ae165 1849 __ethtool_get_strings(dev, gstrings.string_set, data);
1da177e4
LT		 1850
1851 ret = -EFAULT;
1852 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1853 goto out;
1854 useraddr += sizeof(gstrings);
4d1ceea8
AS		 1855 if (gstrings.len &&
1856 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1da177e4
LT		 1857 goto out;
1858 ret = 0;
1859
340ae165 1860out:
4d1ceea8 1861 vfree(data);
1da177e4
LT		 1862 return ret;
1863}
1864
1865static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1866{
1867 struct ethtool_value id;
68f512f2 1868 static bool busy;
c03a14e8 1869 const struct ethtool_ops *ops = dev->ethtool_ops;
68f512f2 1870 int rc;
1da177e4 1871
c03a14e8 1872 if (!ops->set_phys_id)
1da177e4
LT		 1873 return -EOPNOTSUPP;
1874
68f512f2
BH		 1875 if (busy)
1876 return -EBUSY;
1877
1da177e4
LT		 1878 if (copy_from_user(&id, useraddr, sizeof(id)))
1879 return -EFAULT;
1880
c03a14e8 1881 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1882 if (rc < 0)
68f512f2
BH		 1883 return rc;
1884
1885 /* Drop the RTNL lock while waiting, but prevent reentry or
1886 * removal of the device.
1887 */
1888 busy = true;
1889 dev_hold(dev);
1890 rtnl_unlock();
1891
1892 if (rc == 0) {
1893 /* Driver will handle this itself */
1894 schedule_timeout_interruptible(
143780c6 1895 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1896 } else {
fce55922
AB		 1897 /* Driver expects to be called at twice the frequency in rc */
1898 int n = rc * 2, i, interval = HZ / n;
1899
1900 /* Count down seconds */
68f512f2 1901 do {
fce55922
AB		 1902 /* Count down iterations per second */
1903 i = n;
1904 do {
1905 rtnl_lock();
c03a14e8 1906 rc = ops->set_phys_id(dev,
fce55922
AB		 1907 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1908 rtnl_unlock();
1909 if (rc)
1910 break;
1911 schedule_timeout_interruptible(interval);
1912 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1913 } while (!signal_pending(current) &&
1914 (id.data == 0 || --id.data != 0));
1915 }
1916
1917 rtnl_lock();
1918 dev_put(dev);
1919 busy = false;
1920
c03a14e8 1921 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 1922 return rc;
1da177e4
LT		 1923}
1924
1925static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1926{
1927 struct ethtool_stats stats;
76fd8593 1928 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1929 u64 *data;
ff03d49f 1930 int ret, n_stats;
1da177e4 1931
a9828ec6 1932 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1933 return -EOPNOTSUPP;
1934
a9828ec6 1935 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1936 if (n_stats < 0)
1937 return n_stats;
4d1ceea8
AS		 1938 if (n_stats > S32_MAX / sizeof(u64))
1939 return -ENOMEM;
1940 WARN_ON_ONCE(!n_stats);
1da177e4
LT		 1941 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1942 return -EFAULT;
1943
ff03d49f 1944 stats.n_stats = n_stats;
4d1ceea8
AS		 1945 data = vzalloc(n_stats * sizeof(u64));
1946 if (n_stats && !data)
1da177e4
LT		 1947 return -ENOMEM;
1948
1949 ops->get_ethtool_stats(dev, &stats, data);
1950
1951 ret = -EFAULT;
1952 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1953 goto out;
1954 useraddr += sizeof(stats);
4d1ceea8 1955 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
1da177e4
LT		 1956 goto out;
1957 ret = 0;
1958
1959 out:
4d1ceea8 1960 vfree(data);
1da177e4
LT		 1961 return ret;
1962}
1963
f3a40945
AL		 1964static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1965{
1966 struct ethtool_stats stats;
1967 struct phy_device *phydev = dev->phydev;
1968 u64 *data;
1969 int ret, n_stats;
1970
1971 if (!phydev)
1972 return -EOPNOTSUPP;
1973
1974 n_stats = phy_get_sset_count(phydev);
f3a40945
AL		 1975 if (n_stats < 0)
1976 return n_stats;
4d1ceea8
AS		 1977 if (n_stats > S32_MAX / sizeof(u64))
1978 return -ENOMEM;
1979 WARN_ON_ONCE(!n_stats);
f3a40945
AL		 1980
1981 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1982 return -EFAULT;
1983
1984 stats.n_stats = n_stats;
4d1ceea8
AS		 1985 data = vzalloc(n_stats * sizeof(u64));
1986 if (n_stats && !data)
f3a40945
AL		 1987 return -ENOMEM;
1988
1989 mutex_lock(&phydev->lock);
1990 phydev->drv->get_stats(phydev, &stats, data);
1991 mutex_unlock(&phydev->lock);
1992
1993 ret = -EFAULT;
1994 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1995 goto out;
1996 useraddr += sizeof(stats);
4d1ceea8 1997 if (n_stats && copy_to_user(useraddr, data, n_stats * sizeof(u64)))
f3a40945
AL		 1998 goto out;
1999 ret = 0;
2000
2001 out:
4d1ceea8 2002 vfree(data);
f3a40945
AL		 2003 return ret;
2004}
2005
0bf0519d 2006static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 2007{
2008 struct ethtool_perm_addr epaddr;
a6f9a705 2009
313674af 2010 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 2011 return -EFAULT;
2012
313674af
MW		 2013 if (epaddr.size < dev->addr_len)
2014 return -ETOOSMALL;
2015 epaddr.size = dev->addr_len;
a6f9a705 2016
a6f9a705 2017 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 2018 return -EFAULT;
a6f9a705 2019 useraddr += sizeof(epaddr);
313674af
MW		 2020 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2021 return -EFAULT;
2022 return 0;
a6f9a705
JW		 2023}
2024
13c99b24
JG		 2025static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2026 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 2027{
8e557421 2028 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 2029
13c99b24 2030 if (!actor)
3ae7c0b2
JG		 2031 return -EOPNOTSUPP;
2032
13c99b24 2033 edata.data = actor(dev);
3ae7c0b2
JG		 2034
2035 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2036 return -EFAULT;
2037 return 0;
2038}
2039
13c99b24
JG		 2040static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2041 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 2042{
2043 struct ethtool_value edata;
2044
13c99b24 2045 if (!actor)
3ae7c0b2
JG		 2046 return -EOPNOTSUPP;
2047
2048 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2049 return -EFAULT;
2050
13c99b24 2051 actor(dev, edata.data);
339bf024
JG		 2052 return 0;
2053}
2054
13c99b24
JG		 2055static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2056 int (*actor)(struct net_device *, u32))
339bf024
JG		 2057{
2058 struct ethtool_value edata;
2059
13c99b24 2060 if (!actor)
339bf024
JG		 2061 return -EOPNOTSUPP;
2062
2063 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2064 return -EFAULT;
2065
13c99b24 2066 return actor(dev, edata.data);
339bf024
JG		 2067}
2068
97f8aefb 2069static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2070 char __user *useraddr)
05c6a8d7
AK		 2071{
2072 struct ethtool_flash efl;
2073
2074 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2075 return -EFAULT;
2076
2077 if (!dev->ethtool_ops->flash_device)
2078 return -EOPNOTSUPP;
2079
786f5281
BH		 2080 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
2081
05c6a8d7
AK		 2082 return dev->ethtool_ops->flash_device(dev, &efl);
2083}
2084
29dd54b7
AC		 2085static int ethtool_set_dump(struct net_device *dev,
2086 void __user *useraddr)
2087{
2088 struct ethtool_dump dump;
2089
2090 if (!dev->ethtool_ops->set_dump)
2091 return -EOPNOTSUPP;
2092
2093 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2094 return -EFAULT;
2095
2096 return dev->ethtool_ops->set_dump(dev, &dump);
2097}
2098
2099static int ethtool_get_dump_flag(struct net_device *dev,
2100 void __user *useraddr)
2101{
2102 int ret;
2103 struct ethtool_dump dump;
2104 const struct ethtool_ops *ops = dev->ethtool_ops;
2105
c03a14e8 2106 if (!ops->get_dump_flag)
29dd54b7
AC		 2107 return -EOPNOTSUPP;
2108
2109 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2110 return -EFAULT;
2111
2112 ret = ops->get_dump_flag(dev, &dump);
2113 if (ret)
2114 return ret;
2115
2116 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2117 return -EFAULT;
2118 return 0;
2119}
2120
2121static int ethtool_get_dump_data(struct net_device *dev,
2122 void __user *useraddr)
2123{
2124 int ret;
2125 __u32 len;
2126 struct ethtool_dump dump, tmp;
2127 const struct ethtool_ops *ops = dev->ethtool_ops;
2128 void *data = NULL;
2129
c03a14e8 2130 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 2131 return -EOPNOTSUPP;
2132
2133 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2134 return -EFAULT;
2135
2136 memset(&tmp, 0, sizeof(tmp));
2137 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2138 ret = ops->get_dump_flag(dev, &tmp);
2139 if (ret)
2140 return ret;
2141
c590b5e2 2142 len = min(tmp.len, dump.len);
29dd54b7
AC		 2143 if (!len)
2144 return -EFAULT;
2145
c590b5e2
MS		 2146 /* Don't ever let the driver think there's more space available
2147 * than it requested with .get_dump_flag().
2148 */
2149 dump.len = len;
2150
2151 /* Always allocate enough space to hold the whole thing so that the
2152 * driver does not need to check the length and bother with partial
2153 * dumping.
2154 */
29dd54b7
AC		 2155 data = vzalloc(tmp.len);
2156 if (!data)
2157 return -ENOMEM;
2158 ret = ops->get_dump_data(dev, &dump, data);
2159 if (ret)
2160 goto out;
2161
c590b5e2
MS		 2162 /* There are two sane possibilities:
2163 * 1. The driver's .get_dump_data() does not touch dump.len.
2164 * 2. Or it may set dump.len to how much it really writes, which
2165 * should be tmp.len (or len if it can do a partial dump).
2166 * In any case respond to userspace with the actual length of data
2167 * it's receiving.
2168 */
2169 WARN_ON(dump.len != len && dump.len != tmp.len);
2170 dump.len = len;
2171
29dd54b7
AC		 2172 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2173 ret = -EFAULT;
2174 goto out;
2175 }
2176 useraddr += offsetof(struct ethtool_dump, data);
2177 if (copy_to_user(useraddr, data, len))
2178 ret = -EFAULT;
2179out:
2180 vfree(data);
2181 return ret;
2182}
2183
c8f3a8c3
RC		 2184static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2185{
2186 int err = 0;
2187 struct ethtool_ts_info info;
2188 const struct ethtool_ops *ops = dev->ethtool_ops;
2189 struct phy_device *phydev = dev->phydev;
2190
2191 memset(&info, 0, sizeof(info));
2192 info.cmd = ETHTOOL_GET_TS_INFO;
2193
2194 if (phydev && phydev->drv && phydev->drv->ts_info) {
c8f3a8c3 2195 err = phydev->drv->ts_info(phydev, &info);
c03a14e8 2196 } else if (ops->get_ts_info) {
c8f3a8c3 2197 err = ops->get_ts_info(dev, &info);
c8f3a8c3
RC		 2198 } else {
2199 info.so_timestamping =
2200 SOF_TIMESTAMPING_RX_SOFTWARE |
2201 SOF_TIMESTAMPING_SOFTWARE;
2202 info.phc_index = -1;
2203 }
2204
2205 if (err)
2206 return err;
2207
2208 if (copy_to_user(useraddr, &info, sizeof(info)))
2209 err = -EFAULT;
2210
2211 return err;
2212}
2213
2f438366
ES		 2214static int __ethtool_get_module_info(struct net_device *dev,
2215 struct ethtool_modinfo *modinfo)
2216{
2217 const struct ethtool_ops *ops = dev->ethtool_ops;
2218 struct phy_device *phydev = dev->phydev;
2219
2220 if (phydev && phydev->drv && phydev->drv->module_info)
2221 return phydev->drv->module_info(phydev, modinfo);
2222
2223 if (ops->get_module_info)
2224 return ops->get_module_info(dev, modinfo);
2225
2226 return -EOPNOTSUPP;
2227}
2228
41c3cb6d
SH		 2229static int ethtool_get_module_info(struct net_device *dev,
2230 void __user *useraddr)
2231{
2232 int ret;
2233 struct ethtool_modinfo modinfo;
41c3cb6d
SH		 2234
2235 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2236 return -EFAULT;
2237
2f438366 2238 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2239 if (ret)
2240 return ret;
2241
2242 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2243 return -EFAULT;
2244
2245 return 0;
2246}
2247
2f438366
ES		 2248static int __ethtool_get_module_eeprom(struct net_device *dev,
2249 struct ethtool_eeprom *ee, u8 *data)
2250{
2251 const struct ethtool_ops *ops = dev->ethtool_ops;
2252 struct phy_device *phydev = dev->phydev;
2253
2254 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2255 return phydev->drv->module_eeprom(phydev, ee, data);
2256
2257 if (ops->get_module_eeprom)
2258 return ops->get_module_eeprom(dev, ee, data);
2259
2260 return -EOPNOTSUPP;
2261}
2262
41c3cb6d
SH		 2263static int ethtool_get_module_eeprom(struct net_device *dev,
2264 void __user *useraddr)
2265{
2266 int ret;
2267 struct ethtool_modinfo modinfo;
41c3cb6d 2268
2f438366 2269 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2270 if (ret)
2271 return ret;
2272
2f438366
ES		 2273 return ethtool_get_any_eeprom(dev, useraddr,
2274 __ethtool_get_module_eeprom,
41c3cb6d
SH		 2275 modinfo.eeprom_len);
2276}
2277
f0db9b07
GV		 2278static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2279{
2280 switch (tuna->id) {
2281 case ETHTOOL_RX_COPYBREAK:
1255a505 2282 case ETHTOOL_TX_COPYBREAK:
f0db9b07
GV		 2283 if (tuna->len != sizeof(u32) ||
2284 tuna->type_id != ETHTOOL_TUNABLE_U32)
2285 return -EINVAL;
2286 break;
2287 default:
2288 return -EINVAL;
2289 }
2290
2291 return 0;
2292}
2293
2294static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2295{
2296 int ret;
2297 struct ethtool_tunable tuna;
2298 const struct ethtool_ops *ops = dev->ethtool_ops;
2299 void *data;
2300
2301 if (!ops->get_tunable)
2302 return -EOPNOTSUPP;
2303 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2304 return -EFAULT;
2305 ret = ethtool_tunable_valid(&tuna);
2306 if (ret)
2307 return ret;
2308 data = kmalloc(tuna.len, GFP_USER);
2309 if (!data)
2310 return -ENOMEM;
2311 ret = ops->get_tunable(dev, &tuna, data);
2312 if (ret)
2313 goto out;
2314 useraddr += sizeof(tuna);
2315 ret = -EFAULT;
2316 if (copy_to_user(useraddr, data, tuna.len))
2317 goto out;
2318 ret = 0;
2319
2320out:
2321 kfree(data);
2322 return ret;
2323}
2324
2325static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2326{
2327 int ret;
2328 struct ethtool_tunable tuna;
2329 const struct ethtool_ops *ops = dev->ethtool_ops;
2330 void *data;
2331
2332 if (!ops->set_tunable)
2333 return -EOPNOTSUPP;
2334 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2335 return -EFAULT;
2336 ret = ethtool_tunable_valid(&tuna);
2337 if (ret)
2338 return ret;
f0db9b07 2339 useraddr += sizeof(tuna);
30e7e3ec
AV		 2340 data = memdup_user(useraddr, tuna.len);
2341 if (IS_ERR(data))
2342 return PTR_ERR(data);
f0db9b07
GV		 2343 ret = ops->set_tunable(dev, &tuna, data);
2344
f0db9b07
GV		 2345 kfree(data);
2346 return ret;
2347}
2348
421797b1
KL		 2349static int ethtool_get_per_queue_coalesce(struct net_device *dev,
2350 void __user *useraddr,
2351 struct ethtool_per_queue_op *per_queue_opt)
2352{
2353 u32 bit;
2354 int ret;
2355 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2356
2357 if (!dev->ethtool_ops->get_per_queue_coalesce)
2358 return -EOPNOTSUPP;
2359
2360 useraddr += sizeof(*per_queue_opt);
2361
2362 bitmap_from_u32array(queue_mask,
2363 MAX_NUM_QUEUE,
2364 per_queue_opt->queue_mask,
2365 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2366
2367 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2368 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2369
2370 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2371 if (ret != 0)
2372 return ret;
2373 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2374 return -EFAULT;
2375 useraddr += sizeof(coalesce);
2376 }
2377
2378 return 0;
2379}
2380
f38d138a
KL		 2381static int ethtool_set_per_queue_coalesce(struct net_device *dev,
2382 void __user *useraddr,
2383 struct ethtool_per_queue_op *per_queue_opt)
2384{
2385 u32 bit;
2386 int i, ret = 0;
2387 int n_queue;
2388 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2389 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2390
2391 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2392 (!dev->ethtool_ops->get_per_queue_coalesce))
2393 return -EOPNOTSUPP;
2394
2395 useraddr += sizeof(*per_queue_opt);
2396
2397 bitmap_from_u32array(queue_mask,
2398 MAX_NUM_QUEUE,
2399 per_queue_opt->queue_mask,
2400 DIV_ROUND_UP(MAX_NUM_QUEUE, 32));
2401 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2402 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2403 if (!backup)
2404 return -ENOMEM;
2405
2406 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2407 struct ethtool_coalesce coalesce;
2408
2409 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2410 if (ret != 0)
2411 goto roll_back;
2412
2413 tmp++;
2414
2415 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2416 ret = -EFAULT;
2417 goto roll_back;
2418 }
2419
2420 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2421 if (ret != 0)
2422 goto roll_back;
2423
2424 useraddr += sizeof(coalesce);
2425 }
2426
2427roll_back:
2428 if (ret != 0) {
2429 tmp = backup;
2430 for_each_set_bit(i, queue_mask, bit) {
2431 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2432 tmp++;
2433 }
2434 }
2435 kfree(backup);
2436
2437 return ret;
2438}
2439
ac2c7ad0
KL		 2440static int ethtool_set_per_queue(struct net_device *dev, void __user *useraddr)
2441{
2442 struct ethtool_per_queue_op per_queue_opt;
2443
2444 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2445 return -EFAULT;
2446
2447 switch (per_queue_opt.sub_command) {
421797b1
KL		 2448 case ETHTOOL_GCOALESCE:
2449 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
f38d138a
KL		 2450 case ETHTOOL_SCOALESCE:
2451 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
ac2c7ad0
KL		 2452 default:
2453 return -EOPNOTSUPP;
2454 };
2455}
2456
968ad9da
RL		 2457static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2458{
2459 switch (tuna->id) {
65feddd5
RL		 2460 case ETHTOOL_PHY_DOWNSHIFT:
2461 if (tuna->len != sizeof(u8) ||
2462 tuna->type_id != ETHTOOL_TUNABLE_U8)
2463 return -EINVAL;
2464 break;
968ad9da
RL		 2465 default:
2466 return -EINVAL;
2467 }
2468
2469 return 0;
2470}
2471
2472static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2473{
2474 int ret;
2475 struct ethtool_tunable tuna;
2476 struct phy_device *phydev = dev->phydev;
2477 void *data;
2478
2479 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2480 return -EOPNOTSUPP;
2481
2482 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2483 return -EFAULT;
2484 ret = ethtool_phy_tunable_valid(&tuna);
2485 if (ret)
2486 return ret;
2487 data = kmalloc(tuna.len, GFP_USER);
2488 if (!data)
2489 return -ENOMEM;
4b65246b 2490 mutex_lock(&phydev->lock);
968ad9da 2491 ret = phydev->drv->get_tunable(phydev, &tuna, data);
4b65246b 2492 mutex_unlock(&phydev->lock);
968ad9da
RL		 2493 if (ret)
2494 goto out;
2495 useraddr += sizeof(tuna);
2496 ret = -EFAULT;
2497 if (copy_to_user(useraddr, data, tuna.len))
2498 goto out;
2499 ret = 0;
2500
2501out:
2502 kfree(data);
2503 return ret;
2504}
2505
2506static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2507{
2508 int ret;
2509 struct ethtool_tunable tuna;
2510 struct phy_device *phydev = dev->phydev;
2511 void *data;
2512
2513 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2514 return -EOPNOTSUPP;
2515 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2516 return -EFAULT;
2517 ret = ethtool_phy_tunable_valid(&tuna);
2518 if (ret)
2519 return ret;
968ad9da 2520 useraddr += sizeof(tuna);
30e7e3ec
AV		 2521 data = memdup_user(useraddr, tuna.len);
2522 if (IS_ERR(data))
2523 return PTR_ERR(data);
4b65246b 2524 mutex_lock(&phydev->lock);
968ad9da 2525 ret = phydev->drv->set_tunable(phydev, &tuna, data);
4b65246b 2526 mutex_unlock(&phydev->lock);
968ad9da 2527
968ad9da
RL		 2528 kfree(data);
2529 return ret;
2530}
2531
1a5f3da2
VSR		 2532static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2533{
2534 struct ethtool_fecparam fecparam = { ETHTOOL_GFECPARAM };
2535
2536 if (!dev->ethtool_ops->get_fecparam)
2537 return -EOPNOTSUPP;
2538
2539 dev->ethtool_ops->get_fecparam(dev, &fecparam);
2540
2541 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2542 return -EFAULT;
2543 return 0;
2544}
2545
2546static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2547{
2548 struct ethtool_fecparam fecparam;
2549
2550 if (!dev->ethtool_ops->set_fecparam)
2551 return -EOPNOTSUPP;
2552
2553 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2554 return -EFAULT;
2555
2556 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2557}
2558
600fed5e 2559/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 2560
881d966b 2561int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 2562{
881d966b 2563 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4 2564 void __user *useraddr = ifr->ifr_data;
ac2c7ad0 2565 u32 ethcmd, sub_cmd;
1da177e4 2566 int rc;
b29d3145 2567 netdev_features_t old_features;
1da177e4 2568
1da177e4
LT		 2569 if (!dev || !netif_device_present(dev))
2570 return -ENODEV;
2571
97f8aefb 2572 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 2573 return -EFAULT;
2574
ac2c7ad0
KL		 2575 if (ethcmd == ETHTOOL_PERQUEUE) {
2576 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2577 return -EFAULT;
2578 } else {
2579 sub_cmd = ethcmd;
2580 }
75f3123c 2581 /* Allow some commands to be done by anyone */
ac2c7ad0 2582 switch (sub_cmd) {
0fdc100b 2583 case ETHTOOL_GSET:
75f3123c 2584 case ETHTOOL_GDRVINFO:
75f3123c 2585 case ETHTOOL_GMSGLVL:
2da45db2 2586 case ETHTOOL_GLINK:
75f3123c
SH		 2587 case ETHTOOL_GCOALESCE:
2588 case ETHTOOL_GRINGPARAM:
2589 case ETHTOOL_GPAUSEPARAM:
2590 case ETHTOOL_GRXCSUM:
2591 case ETHTOOL_GTXCSUM:
2592 case ETHTOOL_GSG:
f80400a2 2593 case ETHTOOL_GSSET_INFO:
75f3123c 2594 case ETHTOOL_GSTRINGS:
2da45db2 2595 case ETHTOOL_GSTATS:
f3a40945 2596 case ETHTOOL_GPHYSTATS:
75f3123c
SH		 2597 case ETHTOOL_GTSO:
2598 case ETHTOOL_GPERMADDR:
75f3123c 2599 case ETHTOOL_GGSO:
1cab819b 2600 case ETHTOOL_GGRO:
339bf024
JG		 2601 case ETHTOOL_GFLAGS:
2602 case ETHTOOL_GPFLAGS:
0853ad66 2603 case ETHTOOL_GRXFH:
59089d8d
SB		 2604 case ETHTOOL_GRXRINGS:
2605 case ETHTOOL_GRXCLSRLCNT:
2606 case ETHTOOL_GRXCLSRULE:
2607 case ETHTOOL_GRXCLSRLALL:
2da45db2 2608 case ETHTOOL_GRXFHINDIR:
3de0b592 2609 case ETHTOOL_GRSSH:
5455c699 2610 case ETHTOOL_GFEATURES:
2da45db2 2611 case ETHTOOL_GCHANNELS:
c8f3a8c3 2612 case ETHTOOL_GET_TS_INFO:
2da45db2 2613 case ETHTOOL_GEEE:
f0db9b07 2614 case ETHTOOL_GTUNABLE:
968ad9da 2615 case ETHTOOL_PHY_GTUNABLE:
8006f6bf 2616 case ETHTOOL_GLINKSETTINGS:
1a5f3da2 2617 case ETHTOOL_GFECPARAM:
75f3123c
SH		 2618 break;
2619 default:
5e1fccc0 2620 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 2621 return -EPERM;
2622 }
2623
97f8aefb 2624 if (dev->ethtool_ops->begin) {
2625 rc = dev->ethtool_ops->begin(dev);
2626 if (rc < 0)
1da177e4 2627 return rc;
97f8aefb 2628 }
d8a33ac4
SH		 2629 old_features = dev->features;
2630
1da177e4
LT		 2631 switch (ethcmd) {
2632 case ETHTOOL_GSET:
2633 rc = ethtool_get_settings(dev, useraddr);
2634 break;
2635 case ETHTOOL_SSET:
2636 rc = ethtool_set_settings(dev, useraddr);
2637 break;
2638 case ETHTOOL_GDRVINFO:
2639 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 2640 break;
2641 case ETHTOOL_GREGS:
2642 rc = ethtool_get_regs(dev, useraddr);
2643 break;
2644 case ETHTOOL_GWOL:
2645 rc = ethtool_get_wol(dev, useraddr);
2646 break;
2647 case ETHTOOL_SWOL:
2648 rc = ethtool_set_wol(dev, useraddr);
2649 break;
2650 case ETHTOOL_GMSGLVL:
13c99b24
JG		 2651 rc = ethtool_get_value(dev, useraddr, ethcmd,
2652 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 2653 break;
2654 case ETHTOOL_SMSGLVL:
13c99b24
JG		 2655 rc = ethtool_set_value_void(dev, useraddr,
2656 dev->ethtool_ops->set_msglevel);
1da177e4 2657 break;
80f12ecc
YM		 2658 case ETHTOOL_GEEE:
2659 rc = ethtool_get_eee(dev, useraddr);
2660 break;
2661 case ETHTOOL_SEEE:
2662 rc = ethtool_set_eee(dev, useraddr);
2663 break;
1da177e4
LT		 2664 case ETHTOOL_NWAY_RST:
2665 rc = ethtool_nway_reset(dev);
2666 break;
2667 case ETHTOOL_GLINK:
e596e6e4 2668 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 2669 break;
2670 case ETHTOOL_GEEPROM:
2671 rc = ethtool_get_eeprom(dev, useraddr);
2672 break;
2673 case ETHTOOL_SEEPROM:
2674 rc = ethtool_set_eeprom(dev, useraddr);
2675 break;
2676 case ETHTOOL_GCOALESCE:
2677 rc = ethtool_get_coalesce(dev, useraddr);
2678 break;
2679 case ETHTOOL_SCOALESCE:
2680 rc = ethtool_set_coalesce(dev, useraddr);
2681 break;
2682 case ETHTOOL_GRINGPARAM:
2683 rc = ethtool_get_ringparam(dev, useraddr);
2684 break;
2685 case ETHTOOL_SRINGPARAM:
2686 rc = ethtool_set_ringparam(dev, useraddr);
2687 break;
2688 case ETHTOOL_GPAUSEPARAM:
2689 rc = ethtool_get_pauseparam(dev, useraddr);
2690 break;
2691 case ETHTOOL_SPAUSEPARAM:
2692 rc = ethtool_set_pauseparam(dev, useraddr);
2693 break;
1da177e4
LT		 2694 case ETHTOOL_TEST:
2695 rc = ethtool_self_test(dev, useraddr);
2696 break;
2697 case ETHTOOL_GSTRINGS:
2698 rc = ethtool_get_strings(dev, useraddr);
2699 break;
2700 case ETHTOOL_PHYS_ID:
2701 rc = ethtool_phys_id(dev, useraddr);
2702 break;
2703 case ETHTOOL_GSTATS:
2704 rc = ethtool_get_stats(dev, useraddr);
2705 break;
a6f9a705
JW		 2706 case ETHTOOL_GPERMADDR:
2707 rc = ethtool_get_perm_addr(dev, useraddr);
2708 break;
3ae7c0b2 2709 case ETHTOOL_GFLAGS:
13c99b24 2710 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 2711 __ethtool_get_flags);
3ae7c0b2
JG		 2712 break;
2713 case ETHTOOL_SFLAGS:
da8ac86c 2714 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 2715 break;
339bf024 2716 case ETHTOOL_GPFLAGS:
13c99b24
JG		 2717 rc = ethtool_get_value(dev, useraddr, ethcmd,
2718 dev->ethtool_ops->get_priv_flags);
339bf024
JG		 2719 break;
2720 case ETHTOOL_SPFLAGS:
13c99b24
JG		 2721 rc = ethtool_set_value(dev, useraddr,
2722 dev->ethtool_ops->set_priv_flags);
339bf024 2723 break;
0853ad66 2724 case ETHTOOL_GRXFH:
59089d8d
SB		 2725 case ETHTOOL_GRXRINGS:
2726 case ETHTOOL_GRXCLSRLCNT:
2727 case ETHTOOL_GRXCLSRULE:
2728 case ETHTOOL_GRXCLSRLALL:
bf988435 2729 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 2730 break;
2731 case ETHTOOL_SRXFH:
59089d8d
SB		 2732 case ETHTOOL_SRXCLSRLDEL:
2733 case ETHTOOL_SRXCLSRLINS:
bf988435 2734 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 2735 break;
05c6a8d7
AK		 2736 case ETHTOOL_FLASHDEV:
2737 rc = ethtool_flash_device(dev, useraddr);
2738 break;
d73d3a8c
BH		 2739 case ETHTOOL_RESET:
2740 rc = ethtool_reset(dev, useraddr);
2741 break;
723b2f57
JG		 2742 case ETHTOOL_GSSET_INFO:
2743 rc = ethtool_get_sset_info(dev, useraddr);
2744 break;
a5b6ee29
BH		 2745 case ETHTOOL_GRXFHINDIR:
2746 rc = ethtool_get_rxfh_indir(dev, useraddr);
2747 break;
2748 case ETHTOOL_SRXFHINDIR:
2749 rc = ethtool_set_rxfh_indir(dev, useraddr);
2750 break;
3de0b592
VD		 2751 case ETHTOOL_GRSSH:
2752 rc = ethtool_get_rxfh(dev, useraddr);
2753 break;
2754 case ETHTOOL_SRSSH:
2755 rc = ethtool_set_rxfh(dev, useraddr);
2756 break;
5455c699
MM		 2757 case ETHTOOL_GFEATURES:
2758 rc = ethtool_get_features(dev, useraddr);
2759 break;
2760 case ETHTOOL_SFEATURES:
2761 rc = ethtool_set_features(dev, useraddr);
2762 break;
0a417704 2763 case ETHTOOL_GTXCSUM:
e83d360d 2764 case ETHTOOL_GRXCSUM:
0a417704
MM		 2765 case ETHTOOL_GSG:
2766 case ETHTOOL_GTSO:
0a417704
MM		 2767 case ETHTOOL_GGSO:
2768 case ETHTOOL_GGRO:
2769 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2770 break;
2771 case ETHTOOL_STXCSUM:
e83d360d 2772 case ETHTOOL_SRXCSUM:
0a417704
MM		 2773 case ETHTOOL_SSG:
2774 case ETHTOOL_STSO:
0a417704
MM		 2775 case ETHTOOL_SGSO:
2776 case ETHTOOL_SGRO:
2777 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2778 break;
8b5933c3 2779 case ETHTOOL_GCHANNELS:
2780 rc = ethtool_get_channels(dev, useraddr);
2781 break;
2782 case ETHTOOL_SCHANNELS:
2783 rc = ethtool_set_channels(dev, useraddr);
2784 break;
29dd54b7
AC		 2785 case ETHTOOL_SET_DUMP:
2786 rc = ethtool_set_dump(dev, useraddr);
2787 break;
2788 case ETHTOOL_GET_DUMP_FLAG:
2789 rc = ethtool_get_dump_flag(dev, useraddr);
2790 break;
2791 case ETHTOOL_GET_DUMP_DATA:
2792 rc = ethtool_get_dump_data(dev, useraddr);
2793 break;
c8f3a8c3
RC		 2794 case ETHTOOL_GET_TS_INFO:
2795 rc = ethtool_get_ts_info(dev, useraddr);
2796 break;
41c3cb6d
SH		 2797 case ETHTOOL_GMODULEINFO:
2798 rc = ethtool_get_module_info(dev, useraddr);
2799 break;
2800 case ETHTOOL_GMODULEEEPROM:
2801 rc = ethtool_get_module_eeprom(dev, useraddr);
2802 break;
f0db9b07
GV		 2803 case ETHTOOL_GTUNABLE:
2804 rc = ethtool_get_tunable(dev, useraddr);
2805 break;
2806 case ETHTOOL_STUNABLE:
2807 rc = ethtool_set_tunable(dev, useraddr);
2808 break;
f3a40945
AL		 2809 case ETHTOOL_GPHYSTATS:
2810 rc = ethtool_get_phy_stats(dev, useraddr);
2811 break;
ac2c7ad0
KL		 2812 case ETHTOOL_PERQUEUE:
2813 rc = ethtool_set_per_queue(dev, useraddr);
2814 break;
3f1ac7a7
DD		 2815 case ETHTOOL_GLINKSETTINGS:
2816 rc = ethtool_get_link_ksettings(dev, useraddr);
2817 break;
2818 case ETHTOOL_SLINKSETTINGS:
2819 rc = ethtool_set_link_ksettings(dev, useraddr);
2820 break;
968ad9da
RL		 2821 case ETHTOOL_PHY_GTUNABLE:
2822 rc = get_phy_tunable(dev, useraddr);
2823 break;
2824 case ETHTOOL_PHY_STUNABLE:
2825 rc = set_phy_tunable(dev, useraddr);
2826 break;
1a5f3da2
VSR		 2827 case ETHTOOL_GFECPARAM:
2828 rc = ethtool_get_fecparam(dev, useraddr);
2829 break;
2830 case ETHTOOL_SFECPARAM:
2831 rc = ethtool_set_fecparam(dev, useraddr);
2832 break;
1da177e4 2833 default:
61a44b9c 2834 rc = -EOPNOTSUPP;
1da177e4 2835 }
4ec93edb 2836
e71a4783 2837 if (dev->ethtool_ops->complete)
1da177e4 2838 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 2839
2840 if (old_features != dev->features)
2841 netdev_features_change(dev);
2842
1da177e4 2843 return rc;
1da177e4 2844}
Linux 6.x block layer and io_uring tree(s)