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[mirror_ubuntu-hirsute-kernel.git] / net / ethtool / ioctl.c
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2874c5fd 1// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4
LT		 2/*
3 * net/core/ethtool.c - Ethtool ioctl handler
4 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 *
6 * This file is where we call all the ethtool_ops commands to get
61a44b9c 7 * the information ethtool needs.
1da177e4
LT		 8 */
9
10#include <linux/module.h>
11#include <linux/types.h>
4fc268d2 12#include <linux/capability.h>
1da177e4
LT		 13#include <linux/errno.h>
14#include <linux/ethtool.h>
15#include <linux/netdevice.h>
c8f3a8c3
RC		 16#include <linux/net_tstamp.h>
17#include <linux/phy.h>
d17792eb 18#include <linux/bitops.h>
97f8aefb 19#include <linux/uaccess.h>
73da16c2 20#include <linux/vmalloc.h>
e679c9c1 21#include <linux/sfp.h>
5a0e3ad6 22#include <linux/slab.h>
68f512f2 23#include <linux/rtnetlink.h>
174cd4b1 24#include <linux/sched/signal.h>
960fb622 25#include <linux/net.h>
ddb6e99e 26#include <net/devlink.h>
a71506a4 27#include <net/xdp_sock_drv.h>
eca4205f 28#include <net/flow_offload.h>
73286734 29#include <linux/ethtool_netlink.h>
1c79031f 30#include <generated/utsrelease.h>
d44e1310
MK		 31#include "common.h"
32
4ec93edb 33/*
1da177e4
LT		 34 * Some useful ethtool_ops methods that're device independent.
35 * If we find that all drivers want to do the same thing here,
36 * we can turn these into dev_() function calls.
37 */
38
39u32 ethtool_op_get_link(struct net_device *dev)
40{
41 return netif_carrier_ok(dev) ? 1 : 0;
42}
97f8aefb 43EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 44
02eacbd0
RC		 45int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
46{
47 info->so_timestamping =
48 SOF_TIMESTAMPING_TX_SOFTWARE |
49 SOF_TIMESTAMPING_RX_SOFTWARE |
50 SOF_TIMESTAMPING_SOFTWARE;
51 info->phc_index = -1;
52 return 0;
53}
54EXPORT_SYMBOL(ethtool_op_get_ts_info);
55
1da177e4
LT		 56/* Handlers for each ethtool command */
57
5455c699
MM		 58static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
59{
60 struct ethtool_gfeatures cmd = {
61 .cmd = ETHTOOL_GFEATURES,
62 .size = ETHTOOL_DEV_FEATURE_WORDS,
63 };
475414f6 64 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 65 u32 __user *sizeaddr;
66 u32 copy_size;
475414f6
MM		 67 int i;
68
69 /* in case feature bits run out again */
09da71b1 70 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 71
72 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 73 features[i].available = (u32)(dev->hw_features >> (32 * i));
74 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
75 features[i].active = (u32)(dev->features >> (32 * i));
76 features[i].never_changed =
77 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 78 }
5455c699
MM		 79
80 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
81 if (get_user(copy_size, sizeaddr))
82 return -EFAULT;
83
84 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
85 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
86
87 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
88 return -EFAULT;
89 useraddr += sizeof(cmd);
90 if (copy_to_user(useraddr, features, copy_size * sizeof(*features)))
91 return -EFAULT;
92
93 return 0;
94}
95
96static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
97{
98 struct ethtool_sfeatures cmd;
99 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 100 netdev_features_t wanted = 0, valid = 0;
101 int i, ret = 0;
5455c699
MM		 102
103 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
104 return -EFAULT;
105 useraddr += sizeof(cmd);
106
107 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
108 return -EINVAL;
109
110 if (copy_from_user(features, useraddr, sizeof(features)))
111 return -EFAULT;
112
475414f6 113 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 114 valid |= (netdev_features_t)features[i].valid << (32 * i);
115 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 116 }
117
118 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 119 return -EINVAL;
120
475414f6
MM		 121 if (valid & ~dev->hw_features) {
122 valid &= dev->hw_features;
5455c699
MM		 123 ret |= ETHTOOL_F_UNSUPPORTED;
124 }
125
475414f6
MM		 126 dev->wanted_features &= ~valid;
127 dev->wanted_features |= wanted & valid;
6cb6a27c 128 __netdev_update_features(dev);
5455c699 129
475414f6 130 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 131 ret |= ETHTOOL_F_WISH;
132
133 return ret;
134}
135
340ae165
MM		 136static int __ethtool_get_sset_count(struct net_device *dev, int sset)
137{
17809516 138 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
340ae165
MM		 139 const struct ethtool_ops *ops = dev->ethtool_ops;
140
5455c699
MM		 141 if (sset == ETH_SS_FEATURES)
142 return ARRAY_SIZE(netdev_features_strings);
143
892311f6
EP		 144 if (sset == ETH_SS_RSS_HASH_FUNCS)
145 return ARRAY_SIZE(rss_hash_func_strings);
146
a4244b0c
HHZ		 147 if (sset == ETH_SS_TUNABLES)
148 return ARRAY_SIZE(tunable_strings);
149
968ad9da
RL		 150 if (sset == ETH_SS_PHY_TUNABLES)
151 return ARRAY_SIZE(phy_tunable_strings);
152
99943382 153 if (sset == ETH_SS_PHY_STATS && dev->phydev &&
17809516
FF		 154 !ops->get_ethtool_phy_stats &&
155 phy_ops && phy_ops->get_sset_count)
156 return phy_ops->get_sset_count(dev->phydev);
f3a40945 157
428c122f
MK		 158 if (sset == ETH_SS_LINK_MODES)
159 return __ETHTOOL_LINK_MODE_MASK_NBITS;
160
c03a14e8 161 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 162 return ops->get_sset_count(dev, sset);
163 else
164 return -EOPNOTSUPP;
165}
166
167static void __ethtool_get_strings(struct net_device *dev,
168 u32 stringset, u8 *data)
169{
17809516 170 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
340ae165
MM		 171 const struct ethtool_ops *ops = dev->ethtool_ops;
172
5455c699
MM		 173 if (stringset == ETH_SS_FEATURES)
174 memcpy(data, netdev_features_strings,
175 sizeof(netdev_features_strings));
892311f6
EP		 176 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
177 memcpy(data, rss_hash_func_strings,
178 sizeof(rss_hash_func_strings));
a4244b0c
HHZ		 179 else if (stringset == ETH_SS_TUNABLES)
180 memcpy(data, tunable_strings, sizeof(tunable_strings));
968ad9da
RL		 181 else if (stringset == ETH_SS_PHY_TUNABLES)
182 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
99943382 183 else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
17809516
FF		 184 !ops->get_ethtool_phy_stats && phy_ops &&
185 phy_ops->get_strings)
186 phy_ops->get_strings(dev->phydev, data);
428c122f
MK		 187 else if (stringset == ETH_SS_LINK_MODES)
188 memcpy(data, link_mode_names,
189 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN);
99943382 190 else
5455c699
MM		 191 /* ops->get_strings is valid because checked earlier */
192 ops->get_strings(dev, stringset, data);
340ae165
MM		 193}
194
c8f44aff 195static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 196{
197 /* feature masks of legacy discrete ethtool ops */
198
199 switch (eth_cmd) {
200 case ETHTOOL_GTXCSUM:
201 case ETHTOOL_STXCSUM:
9d648fb5 202 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC |
f70bb065 203 NETIF_F_SCTP_CRC;
e83d360d
MM		 204 case ETHTOOL_GRXCSUM:
205 case ETHTOOL_SRXCSUM:
206 return NETIF_F_RXCSUM;
0a417704
MM		 207 case ETHTOOL_GSG:
208 case ETHTOOL_SSG:
f70bb065 209 return NETIF_F_SG | NETIF_F_FRAGLIST;
0a417704
MM		 210 case ETHTOOL_GTSO:
211 case ETHTOOL_STSO:
212 return NETIF_F_ALL_TSO;
0a417704
MM		 213 case ETHTOOL_GGSO:
214 case ETHTOOL_SGSO:
215 return NETIF_F_GSO;
216 case ETHTOOL_GGRO:
217 case ETHTOOL_SGRO:
218 return NETIF_F_GRO;
219 default:
220 BUG();
221 }
222}
223
0a417704
MM		 224static int ethtool_get_one_feature(struct net_device *dev,
225 char __user *useraddr, u32 ethcmd)
226{
c8f44aff 227 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 228 struct ethtool_value edata = {
229 .cmd = ethcmd,
86794881 230 .data = !!(dev->features & mask),
0a417704 231 };
0a417704 232
0a417704
MM		 233 if (copy_to_user(useraddr, &edata, sizeof(edata)))
234 return -EFAULT;
235 return 0;
236}
237
0a417704
MM		 238static int ethtool_set_one_feature(struct net_device *dev,
239 void __user *useraddr, u32 ethcmd)
240{
241 struct ethtool_value edata;
c8f44aff 242 netdev_features_t mask;
0a417704
MM		 243
244 if (copy_from_user(&edata, useraddr, sizeof(edata)))
245 return -EFAULT;
246
86794881
MM		 247 mask = ethtool_get_feature_mask(ethcmd);
248 mask &= dev->hw_features;
bc5787c6
MM		 249 if (!mask)
250 return -EOPNOTSUPP;
86794881 251
bc5787c6
MM		 252 if (edata.data)
253 dev->wanted_features |= mask;
254 else
255 dev->wanted_features &= ~mask;
86794881 256
bc5787c6 257 __netdev_update_features(dev);
86794881 258
bc5787c6
MM		 259 return 0;
260}
261
02b3a552
MM		 262#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
263 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 264#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
265 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
266 NETIF_F_RXHASH)
bc5787c6
MM		 267
268static u32 __ethtool_get_flags(struct net_device *dev)
269{
02b3a552
MM		 270 u32 flags = 0;
271
8a73125c
DF		 272 if (dev->features & NETIF_F_LRO)
273 flags |= ETH_FLAG_LRO;
274 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
275 flags |= ETH_FLAG_RXVLAN;
276 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
277 flags |= ETH_FLAG_TXVLAN;
278 if (dev->features & NETIF_F_NTUPLE)
279 flags |= ETH_FLAG_NTUPLE;
280 if (dev->features & NETIF_F_RXHASH)
281 flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 282
283 return flags;
0a417704
MM		 284}
285
bc5787c6 286static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 287{
c8f44aff 288 netdev_features_t features = 0, changed;
da8ac86c 289
02b3a552 290 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 291 return -EINVAL;
292
8a73125c
DF		 293 if (data & ETH_FLAG_LRO)
294 features |= NETIF_F_LRO;
295 if (data & ETH_FLAG_RXVLAN)
296 features |= NETIF_F_HW_VLAN_CTAG_RX;
297 if (data & ETH_FLAG_TXVLAN)
298 features |= NETIF_F_HW_VLAN_CTAG_TX;
299 if (data & ETH_FLAG_NTUPLE)
300 features |= NETIF_F_NTUPLE;
301 if (data & ETH_FLAG_RXHASH)
302 features |= NETIF_F_RXHASH;
02b3a552 303
da8ac86c 304 /* allow changing only bits set in hw_features */
02b3a552 305 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 306 if (changed & ~dev->hw_features)
307 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
308
309 dev->wanted_features =
02b3a552 310 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 311
6cb6a27c 312 __netdev_update_features(dev);
da8ac86c
MM		 313
314 return 0;
315}
316
5a6cd6de
AB		 317/* Given two link masks, AND them together and save the result in dst. */
318void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
319 struct ethtool_link_ksettings *src)
320{
321 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
322 unsigned int idx = 0;
323
324 for (; idx < size; idx++) {
325 dst->link_modes.supported[idx] &=
326 src->link_modes.supported[idx];
327 dst->link_modes.advertising[idx] &=
328 src->link_modes.advertising[idx];
329 }
330}
331EXPORT_SYMBOL(ethtool_intersect_link_masks);
332
6d62b4d5
PR		 333void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
334 u32 legacy_u32)
3f1ac7a7
DD		 335{
336 bitmap_zero(dst, __ETHTOOL_LINK_MODE_MASK_NBITS);
337 dst[0] = legacy_u32;
338}
6d62b4d5 339EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
3f1ac7a7
DD		 340
341/* return false if src had higher bits set. lower bits always updated. */
6d62b4d5
PR		 342bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
343 const unsigned long *src)
3f1ac7a7
DD		 344{
345 bool retval = true;
346
347 /* TODO: following test will soon always be true */
348 if (__ETHTOOL_LINK_MODE_MASK_NBITS > 32) {
349 __ETHTOOL_DECLARE_LINK_MODE_MASK(ext);
350
351 bitmap_zero(ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
352 bitmap_fill(ext, 32);
353 bitmap_complement(ext, ext, __ETHTOOL_LINK_MODE_MASK_NBITS);
354 if (bitmap_intersects(ext, src,
355 __ETHTOOL_LINK_MODE_MASK_NBITS)) {
356 /* src mask goes beyond bit 31 */
357 retval = false;
358 }
359 }
360 *legacy_u32 = src[0];
361 return retval;
362}
6d62b4d5 363EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
3f1ac7a7 364
3f1ac7a7
DD		 365/* return false if ksettings link modes had higher bits
366 * set. legacy_settings always updated (best effort)
367 */
368static bool
369convert_link_ksettings_to_legacy_settings(
370 struct ethtool_cmd *legacy_settings,
371 const struct ethtool_link_ksettings *link_ksettings)
372{
373 bool retval = true;
374
375 memset(legacy_settings, 0, sizeof(*legacy_settings));
376 /* this also clears the deprecated fields in legacy structure:
377 * __u8 transceiver;
378 * __u32 maxtxpkt;
379 * __u32 maxrxpkt;
380 */
381
6d62b4d5 382 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 383 &legacy_settings->supported,
384 link_ksettings->link_modes.supported);
6d62b4d5 385 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 386 &legacy_settings->advertising,
387 link_ksettings->link_modes.advertising);
6d62b4d5 388 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 389 &legacy_settings->lp_advertising,
390 link_ksettings->link_modes.lp_advertising);
391 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
392 legacy_settings->duplex
393 = link_ksettings->base.duplex;
394 legacy_settings->port
395 = link_ksettings->base.port;
396 legacy_settings->phy_address
397 = link_ksettings->base.phy_address;
398 legacy_settings->autoneg
399 = link_ksettings->base.autoneg;
400 legacy_settings->mdio_support
401 = link_ksettings->base.mdio_support;
402 legacy_settings->eth_tp_mdix
403 = link_ksettings->base.eth_tp_mdix;
404 legacy_settings->eth_tp_mdix_ctrl
405 = link_ksettings->base.eth_tp_mdix_ctrl;
19cab887
FF		 406 legacy_settings->transceiver
407 = link_ksettings->base.transceiver;
3f1ac7a7
DD		 408 return retval;
409}
410
411/* number of 32-bit words to store the user's link mode bitmaps */
412#define __ETHTOOL_LINK_MODE_MASK_NU32 \
413 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
414
415/* layout of the struct passed from/to userland */
416struct ethtool_link_usettings {
417 struct ethtool_link_settings base;
418 struct {
419 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
420 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
421 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
422 } link_modes;
423};
424
9b300495 425/* Internal kernel helper to query a device ethtool_link_settings. */
3f1ac7a7
DD		 426int __ethtool_get_link_ksettings(struct net_device *dev,
427 struct ethtool_link_ksettings *link_ksettings)
428{
3f1ac7a7
DD		 429 ASSERT_RTNL();
430
9b300495 431 if (!dev->ethtool_ops->get_link_ksettings)
3237fc63
DD		 432 return -EOPNOTSUPP;
433
9b300495
MK		 434 memset(link_ksettings, 0, sizeof(*link_ksettings));
435 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
3f1ac7a7
DD		 436}
437EXPORT_SYMBOL(__ethtool_get_link_ksettings);
438
439/* convert ethtool_link_usettings in user space to a kernel internal
440 * ethtool_link_ksettings. return 0 on success, errno on error.
441 */
442static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
443 const void __user *from)
444{
445 struct ethtool_link_usettings link_usettings;
446
447 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
448 return -EFAULT;
449
450 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
3aa56885
YN		 451 bitmap_from_arr32(to->link_modes.supported,
452 link_usettings.link_modes.supported,
453 __ETHTOOL_LINK_MODE_MASK_NBITS);
454 bitmap_from_arr32(to->link_modes.advertising,
455 link_usettings.link_modes.advertising,
456 __ETHTOOL_LINK_MODE_MASK_NBITS);
457 bitmap_from_arr32(to->link_modes.lp_advertising,
458 link_usettings.link_modes.lp_advertising,
459 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 460
461 return 0;
462}
463
70ae1e12
CF		 464/* Check if the user is trying to change anything besides speed/duplex */
465bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd)
466{
467 struct ethtool_link_settings base2 = {};
468
469 base2.speed = cmd->base.speed;
470 base2.port = PORT_OTHER;
471 base2.duplex = cmd->base.duplex;
472 base2.cmd = cmd->base.cmd;
473 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords;
474
475 return !memcmp(&base2, &cmd->base, sizeof(base2)) &&
476 bitmap_empty(cmd->link_modes.supported,
477 __ETHTOOL_LINK_MODE_MASK_NBITS) &&
478 bitmap_empty(cmd->link_modes.lp_advertising,
479 __ETHTOOL_LINK_MODE_MASK_NBITS);
480}
481
3f1ac7a7
DD		 482/* convert a kernel internal ethtool_link_ksettings to
483 * ethtool_link_usettings in user space. return 0 on success, errno on
484 * error.
485 */
486static int
487store_link_ksettings_for_user(void __user *to,
488 const struct ethtool_link_ksettings *from)
489{
490 struct ethtool_link_usettings link_usettings;
491
492 memcpy(&link_usettings.base, &from->base, sizeof(link_usettings));
3aa56885
YN		 493 bitmap_to_arr32(link_usettings.link_modes.supported,
494 from->link_modes.supported,
495 __ETHTOOL_LINK_MODE_MASK_NBITS);
496 bitmap_to_arr32(link_usettings.link_modes.advertising,
497 from->link_modes.advertising,
498 __ETHTOOL_LINK_MODE_MASK_NBITS);
499 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
500 from->link_modes.lp_advertising,
501 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 502
503 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
504 return -EFAULT;
505
506 return 0;
507}
508
9b300495 509/* Query device for its ethtool_link_settings. */
3f1ac7a7
DD		 510static int ethtool_get_link_ksettings(struct net_device *dev,
511 void __user *useraddr)
512{
513 int err = 0;
514 struct ethtool_link_ksettings link_ksettings;
515
516 ASSERT_RTNL();
3f1ac7a7
DD		 517 if (!dev->ethtool_ops->get_link_ksettings)
518 return -EOPNOTSUPP;
519
520 /* handle bitmap nbits handshake */
521 if (copy_from_user(&link_ksettings.base, useraddr,
522 sizeof(link_ksettings.base)))
523 return -EFAULT;
524
525 if (__ETHTOOL_LINK_MODE_MASK_NU32
526 != link_ksettings.base.link_mode_masks_nwords) {
527 /* wrong link mode nbits requested */
528 memset(&link_ksettings, 0, sizeof(link_ksettings));
793cf87d 529 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
3f1ac7a7
DD		 530 /* send back number of words required as negative val */
531 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
532 "need too many bits for link modes!");
533 link_ksettings.base.link_mode_masks_nwords
534 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
535
536 /* copy the base fields back to user, not the link
537 * mode bitmaps
538 */
539 if (copy_to_user(useraddr, &link_ksettings.base,
540 sizeof(link_ksettings.base)))
541 return -EFAULT;
542
543 return 0;
544 }
545
546 /* handshake successful: user/kernel agree on
547 * link_mode_masks_nwords
548 */
549
550 memset(&link_ksettings, 0, sizeof(link_ksettings));
551 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
552 if (err < 0)
553 return err;
554
555 /* make sure we tell the right values to user */
556 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
557 link_ksettings.base.link_mode_masks_nwords
558 = __ETHTOOL_LINK_MODE_MASK_NU32;
bdbdac76
OR		 559 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED;
560 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED;
3f1ac7a7
DD		 561
562 return store_link_ksettings_for_user(useraddr, &link_ksettings);
563}
564
9b300495 565/* Update device ethtool_link_settings. */
3f1ac7a7
DD		 566static int ethtool_set_link_ksettings(struct net_device *dev,
567 void __user *useraddr)
568{
569 int err;
570 struct ethtool_link_ksettings link_ksettings;
571
572 ASSERT_RTNL();
573
574 if (!dev->ethtool_ops->set_link_ksettings)
575 return -EOPNOTSUPP;
576
577 /* make sure nbits field has expected value */
578 if (copy_from_user(&link_ksettings.base, useraddr,
579 sizeof(link_ksettings.base)))
580 return -EFAULT;
581
582 if (__ETHTOOL_LINK_MODE_MASK_NU32
583 != link_ksettings.base.link_mode_masks_nwords)
584 return -EINVAL;
585
586 /* copy the whole structure, now that we know it has expected
587 * format
588 */
589 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
590 if (err)
591 return err;
592
593 /* re-check nwords field, just in case */
594 if (__ETHTOOL_LINK_MODE_MASK_NU32
595 != link_ksettings.base.link_mode_masks_nwords)
596 return -EINVAL;
597
bdbdac76
OR		 598 if (link_ksettings.base.master_slave_cfg ||
599 link_ksettings.base.master_slave_state)
600 return -EINVAL;
601
73286734 602 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
1b1b1847 603 if (err >= 0) {
73286734 604 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
1b1b1847
MK		 605 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
606 }
73286734 607 return err;
3f1ac7a7
DD		 608}
609
70ae1e12
CF		 610int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
611 const struct ethtool_link_ksettings *cmd,
612 u32 *dev_speed, u8 *dev_duplex)
613{
614 u32 speed;
615 u8 duplex;
616
617 speed = cmd->base.speed;
618 duplex = cmd->base.duplex;
619 /* don't allow custom speed and duplex */
620 if (!ethtool_validate_speed(speed) ||
621 !ethtool_validate_duplex(duplex) ||
622 !ethtool_virtdev_validate_cmd(cmd))
623 return -EINVAL;
624 *dev_speed = speed;
625 *dev_duplex = duplex;
626
627 return 0;
628}
629EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings);
630
3f1ac7a7
DD		 631/* Query device for its ethtool_cmd settings.
632 *
9b300495
MK		 633 * Backward compatibility note: for compatibility with legacy ethtool, this is
634 * now implemented via get_link_ksettings. When driver reports higher link mode
635 * bits, a kernel warning is logged once (with name of 1st driver/device) to
636 * recommend user to upgrade ethtool, but the command is successful (only the
637 * lower link mode bits reported back to user). Deprecated fields from
638 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
3f1ac7a7 639 */
4bc71cb9
JP		 640static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
641{
9b300495 642 struct ethtool_link_ksettings link_ksettings;
4bc71cb9 643 struct ethtool_cmd cmd;
9b300495 644 int err;
4bc71cb9 645
3f1ac7a7 646 ASSERT_RTNL();
9b300495
MK		 647 if (!dev->ethtool_ops->get_link_ksettings)
648 return -EOPNOTSUPP;
3f1ac7a7 649
9b300495
MK		 650 memset(&link_ksettings, 0, sizeof(link_ksettings));
651 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
652 if (err < 0)
653 return err;
654 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
3237fc63 655
9b300495
MK		 656 /* send a sensible cmd tag back to user */
657 cmd.cmd = ETHTOOL_GSET;
1da177e4
LT		 658
659 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
660 return -EFAULT;
3f1ac7a7 661
1da177e4
LT		 662 return 0;
663}
664
3f1ac7a7
DD		 665/* Update device link settings with given ethtool_cmd.
666 *
9b300495
MK		 667 * Backward compatibility note: for compatibility with legacy ethtool, this is
668 * now always implemented via set_link_settings. When user's request updates
669 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
670 * warning is logged once (with name of 1st driver/device) to recommend user to
671 * upgrade ethtool, and the request is rejected.
3f1ac7a7 672 */
1da177e4
LT		 673static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
674{
9b300495 675 struct ethtool_link_ksettings link_ksettings;
1da177e4 676 struct ethtool_cmd cmd;
73286734 677 int ret;
1da177e4 678
3f1ac7a7 679 ASSERT_RTNL();
1da177e4
LT		 680
681 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
682 return -EFAULT;
9b300495 683 if (!dev->ethtool_ops->set_link_ksettings)
3f1ac7a7
DD		 684 return -EOPNOTSUPP;
685
9b300495
MK		 686 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
687 return -EINVAL;
688 link_ksettings.base.link_mode_masks_nwords =
689 __ETHTOOL_LINK_MODE_MASK_NU32;
73286734 690 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
1b1b1847 691 if (ret >= 0) {
73286734 692 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
1b1b1847
MK		 693 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
694 }
73286734 695 return ret;
1da177e4
LT		 696}
697
97f8aefb 698static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
699 void __user *useraddr)
1da177e4
LT		 700{
701 struct ethtool_drvinfo info;
76fd8593 702 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 703
1da177e4
LT		 704 memset(&info, 0, sizeof(info));
705 info.cmd = ETHTOOL_GDRVINFO;
6a7e25c7 706 strlcpy(info.version, UTS_RELEASE, sizeof(info.version));
c03a14e8 707 if (ops->get_drvinfo) {
01414802
BH		 708 ops->get_drvinfo(dev, &info);
709 } else if (dev->dev.parent && dev->dev.parent->driver) {
710 strlcpy(info.bus_info, dev_name(dev->dev.parent),
711 sizeof(info.bus_info));
712 strlcpy(info.driver, dev->dev.parent->driver->name,
713 sizeof(info.driver));
714 } else {
715 return -EOPNOTSUPP;
716 }
1da177e4 717
723b2f57
JG		 718 /*
719 * this method of obtaining string set info is deprecated;
d17792eb 720 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 721 */
c03a14e8 722 if (ops->get_sset_count) {
ff03d49f
JG		 723 int rc;
724
725 rc = ops->get_sset_count(dev, ETH_SS_TEST);
726 if (rc >= 0)
727 info.testinfo_len = rc;
728 rc = ops->get_sset_count(dev, ETH_SS_STATS);
729 if (rc >= 0)
730 info.n_stats = rc;
339bf024
JG		 731 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
732 if (rc >= 0)
733 info.n_priv_flags = rc;
ff03d49f 734 }
f9fc54d3
YL		 735 if (ops->get_regs_len) {
736 int ret = ops->get_regs_len(dev);
737
738 if (ret > 0)
739 info.regdump_len = ret;
740 }
741
c03a14e8 742 if (ops->get_eeprom_len)
1da177e4
LT		 743 info.eedump_len = ops->get_eeprom_len(dev);
744
ddb6e99e
JK		 745 if (!info.fw_version[0])
746 devlink_compat_running_version(dev, info.fw_version,
747 sizeof(info.fw_version));
ddb6e99e 748
1da177e4
LT		 749 if (copy_to_user(useraddr, &info, sizeof(info)))
750 return -EFAULT;
751 return 0;
752}
753
f5c445ed 754static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 755 void __user *useraddr)
723b2f57
JG		 756{
757 struct ethtool_sset_info info;
723b2f57
JG		 758 u64 sset_mask;
759 int i, idx = 0, n_bits = 0, ret, rc;
760 u32 *info_buf = NULL;
761
723b2f57
JG		 762 if (copy_from_user(&info, useraddr, sizeof(info)))
763 return -EFAULT;
764
765 /* store copy of mask, because we zero struct later on */
766 sset_mask = info.sset_mask;
767 if (!sset_mask)
768 return 0;
769
770 /* calculate size of return buffer */
d17792eb 771 n_bits = hweight64(sset_mask);
723b2f57
JG		 772
773 memset(&info, 0, sizeof(info));
774 info.cmd = ETHTOOL_GSSET_INFO;
775
6396bb22 776 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
723b2f57
JG		 777 if (!info_buf)
778 return -ENOMEM;
779
780 /*
781 * fill return buffer based on input bitmask and successful
782 * get_sset_count return
783 */
784 for (i = 0; i < 64; i++) {
785 if (!(sset_mask & (1ULL << i)))
786 continue;
787
340ae165 788 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 789 if (rc >= 0) {
790 info.sset_mask |= (1ULL << i);
791 info_buf[idx++] = rc;
792 }
793 }
794
795 ret = -EFAULT;
796 if (copy_to_user(useraddr, &info, sizeof(info)))
797 goto out;
798
799 useraddr += offsetof(struct ethtool_sset_info, data);
800 if (copy_to_user(useraddr, info_buf, idx * sizeof(u32)))
801 goto out;
802
803 ret = 0;
804
805out:
806 kfree(info_buf);
807 return ret;
808}
809
97f8aefb 810static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 811 u32 cmd, void __user *useraddr)
0853ad66 812{
bf988435
BH		 813 struct ethtool_rxnfc info;
814 size_t info_size = sizeof(info);
55664f32 815 int rc;
0853ad66 816
59089d8d 817 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 818 return -EOPNOTSUPP;
819
bf988435
BH		 820 /* struct ethtool_rxnfc was originally defined for
821 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
822 * members. User-space might still be using that
823 * definition. */
824 if (cmd == ETHTOOL_SRXFH)
825 info_size = (offsetof(struct ethtool_rxnfc, data) +
826 sizeof(info.data));
827
828 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 829 return -EFAULT;
830
55664f32
BH		 831 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
832 if (rc)
833 return rc;
834
835 if (cmd == ETHTOOL_SRXCLSRLINS &&
836 copy_to_user(useraddr, &info, info_size))
837 return -EFAULT;
838
839 return 0;
0853ad66
SB		 840}
841
97f8aefb 842static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 843 u32 cmd, void __user *useraddr)
0853ad66
SB		 844{
845 struct ethtool_rxnfc info;
bf988435 846 size_t info_size = sizeof(info);
59089d8d
SB		 847 const struct ethtool_ops *ops = dev->ethtool_ops;
848 int ret;
849 void *rule_buf = NULL;
0853ad66 850
59089d8d 851 if (!ops->get_rxnfc)
0853ad66
SB		 852 return -EOPNOTSUPP;
853
bf988435
BH		 854 /* struct ethtool_rxnfc was originally defined for
855 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
856 * members. User-space might still be using that
857 * definition. */
858 if (cmd == ETHTOOL_GRXFH)
859 info_size = (offsetof(struct ethtool_rxnfc, data) +
860 sizeof(info.data));
861
862 if (copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 863 return -EFAULT;
864
84a1d9c4
EC		 865 /* If FLOW_RSS was requested then user-space must be using the
866 * new definition, as FLOW_RSS is newer.
867 */
868 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
869 info_size = sizeof(info);
870 if (copy_from_user(&info, useraddr, info_size))
871 return -EFAULT;
d656fe49
WW		 872 /* Since malicious users may modify the original data,
873 * we need to check whether FLOW_RSS is still requested.
874 */
875 if (!(info.flow_type & FLOW_RSS))
876 return -EINVAL;
84a1d9c4
EC		 877 }
878
2bb3207d
WW		 879 if (info.cmd != cmd)
880 return -EINVAL;
881
59089d8d
SB		 882 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
883 if (info.rule_cnt > 0) {
db048b69 884 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
6396bb22 885 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
db048b69 886 GFP_USER);
59089d8d
SB		 887 if (!rule_buf)
888 return -ENOMEM;
889 }
890 }
0853ad66 891
59089d8d
SB		 892 ret = ops->get_rxnfc(dev, &info, rule_buf);
893 if (ret < 0)
894 goto err_out;
895
896 ret = -EFAULT;
bf988435 897 if (copy_to_user(useraddr, &info, info_size))
59089d8d
SB		 898 goto err_out;
899
900 if (rule_buf) {
901 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
902 if (copy_to_user(useraddr, rule_buf,
903 info.rule_cnt * sizeof(u32)))
904 goto err_out;
905 }
906 ret = 0;
907
908err_out:
c9caceca 909 kfree(rule_buf);
59089d8d
SB		 910
911 return ret;
0853ad66
SB		 912}
913
3de0b592
VD		 914static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
915 struct ethtool_rxnfc *rx_rings,
916 u32 size)
917{
fb95cd8d 918 int i;
3de0b592
VD		 919
920 if (copy_from_user(indir, useraddr, size * sizeof(indir[0])))
fb95cd8d 921 return -EFAULT;
3de0b592
VD		 922
923 /* Validate ring indices */
fb95cd8d
BH		 924 for (i = 0; i < size; i++)
925 if (indir[i] >= rx_rings->data)
926 return -EINVAL;
927
928 return 0;
3de0b592
VD		 929}
930
ba905f5e 931u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
960fb622
ED		 932
933void netdev_rss_key_fill(void *buffer, size_t len)
934{
935 BUG_ON(len > sizeof(netdev_rss_key));
936 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
937 memcpy(buffer, netdev_rss_key, len);
938}
939EXPORT_SYMBOL(netdev_rss_key_fill);
940
a5b6ee29
BH		 941static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
942 void __user *useraddr)
943{
7850f63f
BH		 944 u32 user_size, dev_size;
945 u32 *indir;
a5b6ee29
BH		 946 int ret;
947
7850f63f 948 if (!dev->ethtool_ops->get_rxfh_indir_size ||
fe62d001 949 !dev->ethtool_ops->get_rxfh)
7850f63f
BH		 950 return -EOPNOTSUPP;
951 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
952 if (dev_size == 0)
a5b6ee29
BH		 953 return -EOPNOTSUPP;
954
7850f63f 955 if (copy_from_user(&user_size,
a5b6ee29 956 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 957 sizeof(user_size)))
a5b6ee29
BH		 958 return -EFAULT;
959
7850f63f
BH		 960 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
961 &dev_size, sizeof(dev_size)))
962 return -EFAULT;
963
964 /* If the user buffer size is 0, this is just a query for the
965 * device table size. Otherwise, if it's smaller than the
966 * device table size it's an error.
967 */
968 if (user_size < dev_size)
969 return user_size == 0 ? 0 : -EINVAL;
970
971 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 972 if (!indir)
973 return -ENOMEM;
974
892311f6 975 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
a5b6ee29
BH		 976 if (ret)
977 goto out;
978
7850f63f
BH		 979 if (copy_to_user(useraddr +
980 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
981 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 982 ret = -EFAULT;
983
984out:
985 kfree(indir);
986 return ret;
987}
988
989static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
990 void __user *useraddr)
991{
7850f63f
BH		 992 struct ethtool_rxnfc rx_rings;
993 u32 user_size, dev_size, i;
994 u32 *indir;
c03a14e8 995 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29 996 int ret;
3de0b592 997 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
a5b6ee29 998
fe62d001 999 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
c03a14e8 1000 !ops->get_rxnfc)
7850f63f 1001 return -EOPNOTSUPP;
c03a14e8
JP		 1002
1003 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 1004 if (dev_size == 0)
a5b6ee29
BH		 1005 return -EOPNOTSUPP;
1006
7850f63f 1007 if (copy_from_user(&user_size,
a5b6ee29 1008 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1009 sizeof(user_size)))
a5b6ee29
BH		 1010 return -EFAULT;
1011
278bc429 1012 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 1013 return -EINVAL;
1014
1015 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1016 if (!indir)
1017 return -ENOMEM;
1018
7850f63f 1019 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 1020 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 1021 if (ret)
1022 goto out;
278bc429
BH		 1023
1024 if (user_size == 0) {
1025 for (i = 0; i < dev_size; i++)
1026 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1027 } else {
3de0b592
VD		 1028 ret = ethtool_copy_validate_indir(indir,
1029 useraddr + ringidx_offset,
1030 &rx_rings,
1031 dev_size);
1032 if (ret)
1033 goto out;
1034 }
1035
892311f6 1036 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
d4ab4286
KJ		 1037 if (ret)
1038 goto out;
1039
1040 /* indicate whether rxfh was set to default */
1041 if (user_size == 0)
1042 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1043 else
1044 dev->priv_flags |= IFF_RXFH_CONFIGURED;
3de0b592
VD		 1045
1046out:
1047 kfree(indir);
1048 return ret;
1049}
1050
1051static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1052 void __user *useraddr)
1053{
1054 int ret;
1055 const struct ethtool_ops *ops = dev->ethtool_ops;
f062a384 1056 u32 user_indir_size, user_key_size;
3de0b592 1057 u32 dev_indir_size = 0, dev_key_size = 0;
f062a384 1058 struct ethtool_rxfh rxfh;
3de0b592 1059 u32 total_size;
f062a384 1060 u32 indir_bytes;
3de0b592 1061 u32 *indir = NULL;
892311f6 1062 u8 dev_hfunc = 0;
3de0b592
VD		 1063 u8 *hkey = NULL;
1064 u8 *rss_config;
1065
892311f6 1066 if (!ops->get_rxfh)
3de0b592
VD		 1067 return -EOPNOTSUPP;
1068
1069 if (ops->get_rxfh_indir_size)
1070 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592
VD		 1071 if (ops->get_rxfh_key_size)
1072 dev_key_size = ops->get_rxfh_key_size(dev);
1073
f062a384 1074 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592 1075 return -EFAULT;
f062a384
BH		 1076 user_indir_size = rxfh.indir_size;
1077 user_key_size = rxfh.key_size;
3de0b592 1078
f062a384 1079 /* Check that reserved fields are 0 for now */
84a1d9c4 1080 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1081 return -EINVAL;
84a1d9c4
EC		 1082 /* Most drivers don't handle rss_context, check it's 0 as well */
1083 if (rxfh.rss_context && !ops->get_rxfh_context)
1084 return -EOPNOTSUPP;
f062a384
BH		 1085
1086 rxfh.indir_size = dev_indir_size;
1087 rxfh.key_size = dev_key_size;
1088 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
3de0b592
VD		 1089 return -EFAULT;
1090
3de0b592
VD		 1091 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1092 (user_key_size && (user_key_size != dev_key_size)))
1093 return -EINVAL;
1094
1095 indir_bytes = user_indir_size * sizeof(indir[0]);
1096 total_size = indir_bytes + user_key_size;
1097 rss_config = kzalloc(total_size, GFP_USER);
1098 if (!rss_config)
1099 return -ENOMEM;
1100
1101 if (user_indir_size)
1102 indir = (u32 *)rss_config;
1103
1104 if (user_key_size)
1105 hkey = rss_config + indir_bytes;
1106
84a1d9c4
EC		 1107 if (rxfh.rss_context)
1108 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1109 &dev_hfunc,
1110 rxfh.rss_context);
1111 else
1112 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
892311f6
EP		 1113 if (ret)
1114 goto out;
3de0b592 1115
892311f6
EP		 1116 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1117 &dev_hfunc, sizeof(rxfh.hfunc))) {
1118 ret = -EFAULT;
1119 } else if (copy_to_user(useraddr +
1120 offsetof(struct ethtool_rxfh, rss_config[0]),
1121 rss_config, total_size)) {
1122 ret = -EFAULT;
1123 }
1124out:
3de0b592
VD		 1125 kfree(rss_config);
1126
1127 return ret;
1128}
1129
1130static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1131 void __user *useraddr)
1132{
1133 int ret;
1134 const struct ethtool_ops *ops = dev->ethtool_ops;
1135 struct ethtool_rxnfc rx_rings;
f062a384
BH		 1136 struct ethtool_rxfh rxfh;
1137 u32 dev_indir_size = 0, dev_key_size = 0, i;
3de0b592
VD		 1138 u32 *indir = NULL, indir_bytes = 0;
1139 u8 *hkey = NULL;
1140 u8 *rss_config;
3de0b592 1141 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
84a1d9c4 1142 bool delete = false;
3de0b592 1143
892311f6 1144 if (!ops->get_rxnfc || !ops->set_rxfh)
3de0b592
VD		 1145 return -EOPNOTSUPP;
1146
1147 if (ops->get_rxfh_indir_size)
1148 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592 1149 if (ops->get_rxfh_key_size)
d340c862 1150 dev_key_size = ops->get_rxfh_key_size(dev);
3de0b592 1151
f062a384 1152 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592
VD		 1153 return -EFAULT;
1154
f062a384 1155 /* Check that reserved fields are 0 for now */
84a1d9c4 1156 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1157 return -EINVAL;
84a1d9c4
EC		 1158 /* Most drivers don't handle rss_context, check it's 0 as well */
1159 if (rxfh.rss_context && !ops->set_rxfh_context)
1160 return -EOPNOTSUPP;
f062a384 1161
892311f6
EP		 1162 /* If either indir, hash key or function is valid, proceed further.
1163 * Must request at least one change: indir size, hash key or function.
3de0b592 1164 */
f062a384
BH		 1165 if ((rxfh.indir_size &&
1166 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1167 rxfh.indir_size != dev_indir_size) ||
1168 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1169 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
892311f6 1170 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
3de0b592
VD		 1171 return -EINVAL;
1172
f062a384 1173 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
3de0b592
VD		 1174 indir_bytes = dev_indir_size * sizeof(indir[0]);
1175
f062a384 1176 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
3de0b592
VD		 1177 if (!rss_config)
1178 return -ENOMEM;
1179
1180 rx_rings.cmd = ETHTOOL_GRXRINGS;
1181 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1182 if (ret)
1183 goto out;
1184
84a1d9c4
EC		 1185 /* rxfh.indir_size == 0 means reset the indir table to default (master
1186 * context) or delete the context (other RSS contexts).
f062a384 1187 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
3de0b592 1188 */
f062a384
BH		 1189 if (rxfh.indir_size &&
1190 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
3de0b592
VD		 1191 indir = (u32 *)rss_config;
1192 ret = ethtool_copy_validate_indir(indir,
1193 useraddr + rss_cfg_offset,
1194 &rx_rings,
f062a384 1195 rxfh.indir_size);
3de0b592 1196 if (ret)
7850f63f 1197 goto out;
f062a384 1198 } else if (rxfh.indir_size == 0) {
84a1d9c4
EC		 1199 if (rxfh.rss_context == 0) {
1200 indir = (u32 *)rss_config;
1201 for (i = 0; i < dev_indir_size; i++)
1202 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1203 } else {
1204 delete = true;
1205 }
3de0b592 1206 }
278bc429 1207
f062a384 1208 if (rxfh.key_size) {
3de0b592
VD		 1209 hkey = rss_config + indir_bytes;
1210 if (copy_from_user(hkey,
1211 useraddr + rss_cfg_offset + indir_bytes,
f062a384 1212 rxfh.key_size)) {
3de0b592
VD		 1213 ret = -EFAULT;
1214 goto out;
278bc429 1215 }
7850f63f
BH		 1216 }
1217
84a1d9c4
EC		 1218 if (rxfh.rss_context)
1219 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1220 &rxfh.rss_context, delete);
1221 else
1222 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
d4ab4286
KJ		 1223 if (ret)
1224 goto out;
1225
84a1d9c4
EC		 1226 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1227 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1228 ret = -EFAULT;
1229
1230 if (!rxfh.rss_context) {
1231 /* indicate whether rxfh was set to default */
1232 if (rxfh.indir_size == 0)
1233 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1234 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1235 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1236 }
a5b6ee29
BH		 1237
1238out:
3de0b592 1239 kfree(rss_config);
a5b6ee29
BH		 1240 return ret;
1241}
1242
1da177e4
LT		 1243static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1244{
1245 struct ethtool_regs regs;
76fd8593 1246 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1247 void *regbuf;
1248 int reglen, ret;
1249
1250 if (!ops->get_regs || !ops->get_regs_len)
1251 return -EOPNOTSUPP;
1252
1253 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1254 return -EFAULT;
1255
1256 reglen = ops->get_regs_len(dev);
f9fc54d3
YL		 1257 if (reglen <= 0)
1258 return reglen;
1259
1da177e4
LT		 1260 if (regs.len > reglen)
1261 regs.len = reglen;
1262
ef76c77a
DC		 1263 regbuf = vzalloc(reglen);
1264 if (!regbuf)
1265 return -ENOMEM;
1da177e4 1266
0ee4e769
VD		 1267 if (regs.len < reglen)
1268 reglen = regs.len;
1269
1da177e4
LT		 1270 ops->get_regs(dev, &regs, regbuf);
1271
1272 ret = -EFAULT;
1273 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1274 goto out;
1275 useraddr += offsetof(struct ethtool_regs, data);
0ee4e769 1276 if (copy_to_user(useraddr, regbuf, reglen))
1da177e4
LT		 1277 goto out;
1278 ret = 0;
1279
1280 out:
a77f5db3 1281 vfree(regbuf);
1da177e4
LT		 1282 return ret;
1283}
1284
d73d3a8c
BH		 1285static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1286{
1287 struct ethtool_value reset;
1288 int ret;
1289
1290 if (!dev->ethtool_ops->reset)
1291 return -EOPNOTSUPP;
1292
1293 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1294 return -EFAULT;
1295
1296 ret = dev->ethtool_ops->reset(dev, &reset.data);
1297 if (ret)
1298 return ret;
1299
1300 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1301 return -EFAULT;
1302 return 0;
1303}
1304
1da177e4
LT		 1305static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1306{
5ff223e8 1307 struct ethtool_wolinfo wol;
1da177e4
LT		 1308
1309 if (!dev->ethtool_ops->get_wol)
1310 return -EOPNOTSUPP;
1311
5ff223e8 1312 memset(&wol, 0, sizeof(struct ethtool_wolinfo));
1313 wol.cmd = ETHTOOL_GWOL;
1da177e4
LT		 1314 dev->ethtool_ops->get_wol(dev, &wol);
1315
1316 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1317 return -EFAULT;
1318 return 0;
1319}
1320
1321static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1322{
1323 struct ethtool_wolinfo wol;
61941143 1324 int ret;
1da177e4
LT		 1325
1326 if (!dev->ethtool_ops->set_wol)
1327 return -EOPNOTSUPP;
1328
1329 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1330 return -EFAULT;
1331
61941143
HK		 1332 ret = dev->ethtool_ops->set_wol(dev, &wol);
1333 if (ret)
1334 return ret;
1335
1336 dev->wol_enabled = !!wol.wolopts;
67bffa79 1337 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL);
61941143
HK		 1338
1339 return 0;
1da177e4
LT		 1340}
1341
80f12ecc
YM		 1342static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1343{
1344 struct ethtool_eee edata;
1345 int rc;
1346
1347 if (!dev->ethtool_ops->get_eee)
1348 return -EOPNOTSUPP;
1349
1350 memset(&edata, 0, sizeof(struct ethtool_eee));
1351 edata.cmd = ETHTOOL_GEEE;
1352 rc = dev->ethtool_ops->get_eee(dev, &edata);
1353
1354 if (rc)
1355 return rc;
1356
1357 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1358 return -EFAULT;
1359
1360 return 0;
1361}
1362
1363static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1364{
1365 struct ethtool_eee edata;
6c5bc8fe 1366 int ret;
80f12ecc
YM		 1367
1368 if (!dev->ethtool_ops->set_eee)
1369 return -EOPNOTSUPP;
1370
1371 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1372 return -EFAULT;
1373
6c5bc8fe
MK		 1374 ret = dev->ethtool_ops->set_eee(dev, &edata);
1375 if (!ret)
1376 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
1377 return ret;
80f12ecc
YM		 1378}
1379
1da177e4
LT		 1380static int ethtool_nway_reset(struct net_device *dev)
1381{
1382 if (!dev->ethtool_ops->nway_reset)
1383 return -EOPNOTSUPP;
1384
1385 return dev->ethtool_ops->nway_reset(dev);
1386}
1387
e596e6e4
BH		 1388static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1389{
1390 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
3d2b847f 1391 int link = __ethtool_get_link(dev);
e596e6e4 1392
3d2b847f
MK		 1393 if (link < 0)
1394 return link;
e596e6e4 1395
3d2b847f 1396 edata.data = link;
e596e6e4
BH		 1397 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1398 return -EFAULT;
1399 return 0;
1400}
1401
081d094e
BH		 1402static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1403 int (*getter)(struct net_device *,
1404 struct ethtool_eeprom *, u8 *),
1405 u32 total_len)
1da177e4
LT		 1406{
1407 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 1408 void __user *userbuf = useraddr + sizeof(eeprom);
1409 u32 bytes_remaining;
1da177e4 1410 u8 *data;
b131dd5d 1411 int ret = 0;
1da177e4 1412
1da177e4
LT		 1413 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1414 return -EFAULT;
1415
1416 /* Check for wrap and zero */
1417 if (eeprom.offset + eeprom.len <= eeprom.offset)
1418 return -EINVAL;
1419
1420 /* Check for exceeding total eeprom len */
081d094e 1421 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 1422 return -EINVAL;
1423
b131dd5d 1424 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1425 if (!data)
1426 return -ENOMEM;
1427
b131dd5d
MSB		 1428 bytes_remaining = eeprom.len;
1429 while (bytes_remaining > 0) {
1430 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1431
081d094e 1432 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 1433 if (ret)
1434 break;
1435 if (copy_to_user(userbuf, data, eeprom.len)) {
1436 ret = -EFAULT;
1437 break;
1438 }
1439 userbuf += eeprom.len;
1440 eeprom.offset += eeprom.len;
1441 bytes_remaining -= eeprom.len;
1442 }
1da177e4 1443
c5835df9
MSB		 1444 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1445 eeprom.offset -= eeprom.len;
1446 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1447 ret = -EFAULT;
1448
1da177e4
LT		 1449 kfree(data);
1450 return ret;
1451}
1452
081d094e
BH		 1453static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1454{
1455 const struct ethtool_ops *ops = dev->ethtool_ops;
1456
e0fb6fb6
GR		 1457 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1458 !ops->get_eeprom_len(dev))
081d094e
BH		 1459 return -EOPNOTSUPP;
1460
1461 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1462 ops->get_eeprom_len(dev));
1463}
1464
1da177e4
LT		 1465static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1466{
1467 struct ethtool_eeprom eeprom;
76fd8593 1468 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1469 void __user *userbuf = useraddr + sizeof(eeprom);
1470 u32 bytes_remaining;
1da177e4 1471 u8 *data;
b131dd5d 1472 int ret = 0;
1da177e4 1473
e0fb6fb6
GR		 1474 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1475 !ops->get_eeprom_len(dev))
1da177e4
LT		 1476 return -EOPNOTSUPP;
1477
1478 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1479 return -EFAULT;
1480
1481 /* Check for wrap and zero */
1482 if (eeprom.offset + eeprom.len <= eeprom.offset)
1483 return -EINVAL;
1484
1485 /* Check for exceeding total eeprom len */
1486 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1487 return -EINVAL;
1488
b131dd5d 1489 data = kmalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1490 if (!data)
1491 return -ENOMEM;
1492
b131dd5d
MSB		 1493 bytes_remaining = eeprom.len;
1494 while (bytes_remaining > 0) {
1495 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1496
1497 if (copy_from_user(data, userbuf, eeprom.len)) {
1498 ret = -EFAULT;
1499 break;
1500 }
1501 ret = ops->set_eeprom(dev, &eeprom, data);
1502 if (ret)
1503 break;
1504 userbuf += eeprom.len;
1505 eeprom.offset += eeprom.len;
1506 bytes_remaining -= eeprom.len;
1507 }
1da177e4 1508
1da177e4
LT		 1509 kfree(data);
1510 return ret;
1511}
1512
97f8aefb 1513static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1514 void __user *useraddr)
1da177e4 1515{
8e557421 1516 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
31610711 1517 int ret;
1da177e4
LT		 1518
1519 if (!dev->ethtool_ops->get_coalesce)
1520 return -EOPNOTSUPP;
1521
31610711
HK		 1522 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce);
1523 if (ret)
1524 return ret;
1da177e4
LT		 1525
1526 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1527 return -EFAULT;
1528 return 0;
1529}
1530
95cddcb5
JK		 1531static bool
1532ethtool_set_coalesce_supported(struct net_device *dev,
1533 struct ethtool_coalesce *coalesce)
1534{
1535 u32 supported_params = dev->ethtool_ops->supported_coalesce_params;
1536 u32 nonzero_params = 0;
1537
95cddcb5
JK		 1538 if (coalesce->rx_coalesce_usecs)
1539 nonzero_params |= ETHTOOL_COALESCE_RX_USECS;
1540 if (coalesce->rx_max_coalesced_frames)
1541 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES;
1542 if (coalesce->rx_coalesce_usecs_irq)
1543 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ;
1544 if (coalesce->rx_max_coalesced_frames_irq)
1545 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ;
1546 if (coalesce->tx_coalesce_usecs)
1547 nonzero_params |= ETHTOOL_COALESCE_TX_USECS;
1548 if (coalesce->tx_max_coalesced_frames)
1549 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES;
1550 if (coalesce->tx_coalesce_usecs_irq)
1551 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ;
1552 if (coalesce->tx_max_coalesced_frames_irq)
1553 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ;
1554 if (coalesce->stats_block_coalesce_usecs)
1555 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS;
1556 if (coalesce->use_adaptive_rx_coalesce)
1557 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX;
1558 if (coalesce->use_adaptive_tx_coalesce)
1559 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX;
1560 if (coalesce->pkt_rate_low)
1561 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW;
1562 if (coalesce->rx_coalesce_usecs_low)
1563 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW;
1564 if (coalesce->rx_max_coalesced_frames_low)
1565 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW;
1566 if (coalesce->tx_coalesce_usecs_low)
1567 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW;
1568 if (coalesce->tx_max_coalesced_frames_low)
1569 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW;
1570 if (coalesce->pkt_rate_high)
1571 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH;
1572 if (coalesce->rx_coalesce_usecs_high)
1573 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH;
1574 if (coalesce->rx_max_coalesced_frames_high)
1575 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH;
1576 if (coalesce->tx_coalesce_usecs_high)
1577 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH;
1578 if (coalesce->tx_max_coalesced_frames_high)
1579 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH;
1580 if (coalesce->rate_sample_interval)
1581 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL;
1582
1583 return (supported_params & nonzero_params) == nonzero_params;
1584}
1585
97f8aefb 1586static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1587 void __user *useraddr)
1da177e4
LT		 1588{
1589 struct ethtool_coalesce coalesce;
0cf3eac8 1590 int ret;
1da177e4 1591
fa04ae5c 1592 if (!dev->ethtool_ops->set_coalesce)
1da177e4
LT		 1593 return -EOPNOTSUPP;
1594
1595 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1596 return -EFAULT;
1597
95cddcb5
JK		 1598 if (!ethtool_set_coalesce_supported(dev, &coalesce))
1599 return -EOPNOTSUPP;
1600
0cf3eac8
MK		 1601 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce);
1602 if (!ret)
1603 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);
1604 return ret;
1da177e4
LT		 1605}
1606
1607static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1608{
8e557421 1609 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
1da177e4
LT		 1610
1611 if (!dev->ethtool_ops->get_ringparam)
1612 return -EOPNOTSUPP;
1613
1614 dev->ethtool_ops->get_ringparam(dev, &ringparam);
1615
1616 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1617 return -EFAULT;
1618 return 0;
1619}
1620
1621static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1622{
37e2d99b 1623 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
bc9d1c99 1624 int ret;
1da177e4 1625
37e2d99b 1626 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1da177e4
LT		 1627 return -EOPNOTSUPP;
1628
1629 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1630 return -EFAULT;
1631
37e2d99b
EE		 1632 dev->ethtool_ops->get_ringparam(dev, &max);
1633
1634 /* ensure new ring parameters are within the maximums */
1635 if (ringparam.rx_pending > max.rx_max_pending ||
1636 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1637 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1638 ringparam.tx_pending > max.tx_max_pending)
1639 return -EINVAL;
1640
bc9d1c99
MK		 1641 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam);
1642 if (!ret)
1643 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
1644 return ret;
1da177e4
LT		 1645}
1646
8b5933c3 1647static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1648 void __user *useraddr)
1649{
1650 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1651
1652 if (!dev->ethtool_ops->get_channels)
1653 return -EOPNOTSUPP;
1654
1655 dev->ethtool_ops->get_channels(dev, &channels);
1656
1657 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1658 return -EFAULT;
1659 return 0;
1660}
1661
1662static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1663 void __user *useraddr)
1664{
b8c8a2e2 1665 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1661d346 1666 u16 from_channel, to_channel;
d4ab4286 1667 u32 max_rx_in_use = 0;
1661d346 1668 unsigned int i;
546379b9 1669 int ret;
8b5933c3 1670
8bf36862 1671 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
8b5933c3 1672 return -EOPNOTSUPP;
1673
1674 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1675 return -EFAULT;
1676
b8c8a2e2 1677 dev->ethtool_ops->get_channels(dev, &curr);
8bf36862 1678
75c36dbb
JK		 1679 if (channels.rx_count == curr.rx_count &&
1680 channels.tx_count == curr.tx_count &&
1681 channels.combined_count == curr.combined_count &&
1682 channels.other_count == curr.other_count)
1683 return 0;
1684
8bf36862 1685 /* ensure new counts are within the maximums */
b8c8a2e2
JK		 1686 if (channels.rx_count > curr.max_rx ||
1687 channels.tx_count > curr.max_tx ||
1688 channels.combined_count > curr.max_combined ||
1689 channels.other_count > curr.max_other)
8bf36862
KJ		 1690 return -EINVAL;
1691
7be92514
JK		 1692 /* ensure there is at least one RX and one TX channel */
1693 if (!channels.combined_count &&
1694 (!channels.rx_count || !channels.tx_count))
1695 return -EINVAL;
1696
d4ab4286
KJ		 1697 /* ensure the new Rx count fits within the configured Rx flow
1698 * indirection table settings */
1699 if (netif_is_rxfh_configured(dev) &&
1700 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1701 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1702 return -EINVAL;
1703
1661d346
JK		 1704 /* Disabling channels, query zero-copy AF_XDP sockets */
1705 from_channel = channels.combined_count +
1706 min(channels.rx_count, channels.tx_count);
1707 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1708 for (i = from_channel; i < to_channel; i++)
1709 if (xdp_get_umem_from_qid(dev, i))
1710 return -EINVAL;
1711
546379b9
MK		 1712 ret = dev->ethtool_ops->set_channels(dev, &channels);
1713 if (!ret)
1714 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL);
1715 return ret;
8b5933c3 1716}
1717
1da177e4
LT		 1718static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1719{
e83887f6 1720 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
1da177e4
LT		 1721
1722 if (!dev->ethtool_ops->get_pauseparam)
1723 return -EOPNOTSUPP;
1724
1725 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1726
1727 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1728 return -EFAULT;
1729 return 0;
1730}
1731
1732static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1733{
1734 struct ethtool_pauseparam pauseparam;
bf37faa3 1735 int ret;
1da177e4 1736
e1b90c41 1737 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1738 return -EOPNOTSUPP;
1739
1740 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1741 return -EFAULT;
1742
bf37faa3
MK		 1743 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1744 if (!ret)
1745 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL);
1746 return ret;
1da177e4
LT		 1747}
1748
1da177e4
LT		 1749static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1750{
1751 struct ethtool_test test;
76fd8593 1752 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1753 u64 *data;
ff03d49f 1754 int ret, test_len;
1da177e4 1755
a9828ec6 1756 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1757 return -EOPNOTSUPP;
1758
a9828ec6 1759 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1760 if (test_len < 0)
1761 return test_len;
1762 WARN_ON(test_len == 0);
1763
1da177e4
LT		 1764 if (copy_from_user(&test, useraddr, sizeof(test)))
1765 return -EFAULT;
1766
ff03d49f 1767 test.len = test_len;
6da2ec56 1768 data = kmalloc_array(test_len, sizeof(u64), GFP_USER);
1da177e4
LT		 1769 if (!data)
1770 return -ENOMEM;
1771
77e9b2ab 1772 netif_testing_on(dev);
1da177e4 1773 ops->self_test(dev, &test, data);
77e9b2ab 1774 netif_testing_off(dev);
1da177e4
LT		 1775
1776 ret = -EFAULT;
1777 if (copy_to_user(useraddr, &test, sizeof(test)))
1778 goto out;
1779 useraddr += sizeof(test);
1780 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
1781 goto out;
1782 ret = 0;
1783
1784 out:
1785 kfree(data);
1786 return ret;
1787}
1788
1789static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1790{
1791 struct ethtool_gstrings gstrings;
1da177e4
LT		 1792 u8 *data;
1793 int ret;
1794
1da177e4
LT		 1795 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1796 return -EFAULT;
1797
340ae165 1798 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1799 if (ret < 0)
1800 return ret;
4d1ceea8
AS		 1801 if (ret > S32_MAX / ETH_GSTRING_LEN)
1802 return -ENOMEM;
1803 WARN_ON_ONCE(!ret);
a9828ec6
BH		 1804
1805 gstrings.len = ret;
1da177e4 1806
3d883026
LR		 1807 if (gstrings.len) {
1808 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
1809 if (!data)
1810 return -ENOMEM;
1811
1812 __ethtool_get_strings(dev, gstrings.string_set, data);
1813 } else {
1814 data = NULL;
1815 }
1da177e4
LT		 1816
1817 ret = -EFAULT;
1818 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1819 goto out;
1820 useraddr += sizeof(gstrings);
4d1ceea8
AS		 1821 if (gstrings.len &&
1822 copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
1da177e4
LT		 1823 goto out;
1824 ret = 0;
1825
340ae165 1826out:
4d1ceea8 1827 vfree(data);
1da177e4
LT		 1828 return ret;
1829}
1830
1831static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1832{
1833 struct ethtool_value id;
68f512f2 1834 static bool busy;
c03a14e8 1835 const struct ethtool_ops *ops = dev->ethtool_ops;
68f512f2 1836 int rc;
1da177e4 1837
c03a14e8 1838 if (!ops->set_phys_id)
1da177e4
LT		 1839 return -EOPNOTSUPP;
1840
68f512f2
BH		 1841 if (busy)
1842 return -EBUSY;
1843
1da177e4
LT		 1844 if (copy_from_user(&id, useraddr, sizeof(id)))
1845 return -EFAULT;
1846
c03a14e8 1847 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1848 if (rc < 0)
68f512f2
BH		 1849 return rc;
1850
1851 /* Drop the RTNL lock while waiting, but prevent reentry or
1852 * removal of the device.
1853 */
1854 busy = true;
1855 dev_hold(dev);
1856 rtnl_unlock();
1857
1858 if (rc == 0) {
1859 /* Driver will handle this itself */
1860 schedule_timeout_interruptible(
143780c6 1861 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 1862 } else {
fce55922
AB		 1863 /* Driver expects to be called at twice the frequency in rc */
1864 int n = rc * 2, i, interval = HZ / n;
1865
1866 /* Count down seconds */
68f512f2 1867 do {
fce55922
AB		 1868 /* Count down iterations per second */
1869 i = n;
1870 do {
1871 rtnl_lock();
c03a14e8 1872 rc = ops->set_phys_id(dev,
fce55922
AB		 1873 (i & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
1874 rtnl_unlock();
1875 if (rc)
1876 break;
1877 schedule_timeout_interruptible(interval);
1878 } while (!signal_pending(current) && --i != 0);
68f512f2
BH		 1879 } while (!signal_pending(current) &&
1880 (id.data == 0 || --id.data != 0));
1881 }
1882
1883 rtnl_lock();
1884 dev_put(dev);
1885 busy = false;
1886
c03a14e8 1887 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 1888 return rc;
1da177e4
LT		 1889}
1890
1891static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
1892{
1893 struct ethtool_stats stats;
76fd8593 1894 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1895 u64 *data;
ff03d49f 1896 int ret, n_stats;
1da177e4 1897
a9828ec6 1898 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 1899 return -EOPNOTSUPP;
1900
a9828ec6 1901 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 1902 if (n_stats < 0)
1903 return n_stats;
4d1ceea8
AS		 1904 if (n_stats > S32_MAX / sizeof(u64))
1905 return -ENOMEM;
1906 WARN_ON_ONCE(!n_stats);
1da177e4
LT		 1907 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1908 return -EFAULT;
1909
ff03d49f 1910 stats.n_stats = n_stats;
1da177e4 1911
3d883026
LR		 1912 if (n_stats) {
1913 data = vzalloc(array_size(n_stats, sizeof(u64)));
1914 if (!data)
1915 return -ENOMEM;
1916 ops->get_ethtool_stats(dev, &stats, data);
1917 } else {
1918 data = NULL;
1919 }
1da177e4
LT		 1920
1921 ret = -EFAULT;
1922 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1923 goto out;
1924 useraddr += sizeof(stats);
3dd14996 1925 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
1da177e4
LT		 1926 goto out;
1927 ret = 0;
1928
1929 out:
4d1ceea8 1930 vfree(data);
1da177e4
LT		 1931 return ret;
1932}
1933
f3a40945
AL		 1934static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
1935{
17809516 1936 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
99943382 1937 const struct ethtool_ops *ops = dev->ethtool_ops;
f3a40945 1938 struct phy_device *phydev = dev->phydev;
99943382 1939 struct ethtool_stats stats;
f3a40945
AL		 1940 u64 *data;
1941 int ret, n_stats;
1942
99943382 1943 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
f3a40945
AL		 1944 return -EOPNOTSUPP;
1945
17809516
FF		 1946 if (dev->phydev && !ops->get_ethtool_phy_stats &&
1947 phy_ops && phy_ops->get_sset_count)
1948 n_stats = phy_ops->get_sset_count(dev->phydev);
99943382
FF		 1949 else
1950 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
f3a40945
AL		 1951 if (n_stats < 0)
1952 return n_stats;
4d1ceea8
AS		 1953 if (n_stats > S32_MAX / sizeof(u64))
1954 return -ENOMEM;
1955 WARN_ON_ONCE(!n_stats);
f3a40945
AL		 1956
1957 if (copy_from_user(&stats, useraddr, sizeof(stats)))
1958 return -EFAULT;
1959
1960 stats.n_stats = n_stats;
f3a40945 1961
3d883026
LR		 1962 if (n_stats) {
1963 data = vzalloc(array_size(n_stats, sizeof(u64)));
1964 if (!data)
1965 return -ENOMEM;
1966
17809516
FF		 1967 if (dev->phydev && !ops->get_ethtool_phy_stats &&
1968 phy_ops && phy_ops->get_stats) {
1969 ret = phy_ops->get_stats(dev->phydev, &stats, data);
3d883026
LR		 1970 if (ret < 0)
1971 goto out;
1972 } else {
1973 ops->get_ethtool_phy_stats(dev, &stats, data);
1974 }
99943382 1975 } else {
3d883026 1976 data = NULL;
99943382 1977 }
f3a40945
AL		 1978
1979 ret = -EFAULT;
1980 if (copy_to_user(useraddr, &stats, sizeof(stats)))
1981 goto out;
1982 useraddr += sizeof(stats);
3dd14996 1983 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
f3a40945
AL		 1984 goto out;
1985 ret = 0;
1986
1987 out:
4d1ceea8 1988 vfree(data);
f3a40945
AL		 1989 return ret;
1990}
1991
0bf0519d 1992static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 1993{
1994 struct ethtool_perm_addr epaddr;
a6f9a705 1995
313674af 1996 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 1997 return -EFAULT;
1998
313674af
MW		 1999 if (epaddr.size < dev->addr_len)
2000 return -ETOOSMALL;
2001 epaddr.size = dev->addr_len;
a6f9a705 2002
a6f9a705 2003 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 2004 return -EFAULT;
a6f9a705 2005 useraddr += sizeof(epaddr);
313674af
MW		 2006 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2007 return -EFAULT;
2008 return 0;
a6f9a705
JW		 2009}
2010
13c99b24
JG		 2011static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2012 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 2013{
8e557421 2014 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 2015
13c99b24 2016 if (!actor)
3ae7c0b2
JG		 2017 return -EOPNOTSUPP;
2018
13c99b24 2019 edata.data = actor(dev);
3ae7c0b2
JG		 2020
2021 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2022 return -EFAULT;
2023 return 0;
2024}
2025
13c99b24
JG		 2026static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2027 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 2028{
2029 struct ethtool_value edata;
2030
13c99b24 2031 if (!actor)
3ae7c0b2
JG		 2032 return -EOPNOTSUPP;
2033
2034 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2035 return -EFAULT;
2036
13c99b24 2037 actor(dev, edata.data);
339bf024
JG		 2038 return 0;
2039}
2040
13c99b24
JG		 2041static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2042 int (*actor)(struct net_device *, u32))
339bf024
JG		 2043{
2044 struct ethtool_value edata;
2045
13c99b24 2046 if (!actor)
339bf024
JG		 2047 return -EOPNOTSUPP;
2048
2049 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2050 return -EFAULT;
2051
13c99b24 2052 return actor(dev, edata.data);
339bf024
JG		 2053}
2054
97f8aefb 2055static noinline_for_stack int ethtool_flash_device(struct net_device *dev,
2056 char __user *useraddr)
05c6a8d7
AK		 2057{
2058 struct ethtool_flash efl;
2059
2060 if (copy_from_user(&efl, useraddr, sizeof(efl)))
2061 return -EFAULT;
4eceba17 2062 efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
05c6a8d7 2063
1b45ff6c
JK		 2064 if (!dev->ethtool_ops->flash_device)
2065 return devlink_compat_flash_update(dev, efl.data);
786f5281 2066
05c6a8d7
AK		 2067 return dev->ethtool_ops->flash_device(dev, &efl);
2068}
2069
29dd54b7
AC		 2070static int ethtool_set_dump(struct net_device *dev,
2071 void __user *useraddr)
2072{
2073 struct ethtool_dump dump;
2074
2075 if (!dev->ethtool_ops->set_dump)
2076 return -EOPNOTSUPP;
2077
2078 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2079 return -EFAULT;
2080
2081 return dev->ethtool_ops->set_dump(dev, &dump);
2082}
2083
2084static int ethtool_get_dump_flag(struct net_device *dev,
2085 void __user *useraddr)
2086{
2087 int ret;
2088 struct ethtool_dump dump;
2089 const struct ethtool_ops *ops = dev->ethtool_ops;
2090
c03a14e8 2091 if (!ops->get_dump_flag)
29dd54b7
AC		 2092 return -EOPNOTSUPP;
2093
2094 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2095 return -EFAULT;
2096
2097 ret = ops->get_dump_flag(dev, &dump);
2098 if (ret)
2099 return ret;
2100
2101 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2102 return -EFAULT;
2103 return 0;
2104}
2105
2106static int ethtool_get_dump_data(struct net_device *dev,
2107 void __user *useraddr)
2108{
2109 int ret;
2110 __u32 len;
2111 struct ethtool_dump dump, tmp;
2112 const struct ethtool_ops *ops = dev->ethtool_ops;
2113 void *data = NULL;
2114
c03a14e8 2115 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 2116 return -EOPNOTSUPP;
2117
2118 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2119 return -EFAULT;
2120
2121 memset(&tmp, 0, sizeof(tmp));
2122 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2123 ret = ops->get_dump_flag(dev, &tmp);
2124 if (ret)
2125 return ret;
2126
c590b5e2 2127 len = min(tmp.len, dump.len);
29dd54b7
AC		 2128 if (!len)
2129 return -EFAULT;
2130
c590b5e2
MS		 2131 /* Don't ever let the driver think there's more space available
2132 * than it requested with .get_dump_flag().
2133 */
2134 dump.len = len;
2135
2136 /* Always allocate enough space to hold the whole thing so that the
2137 * driver does not need to check the length and bother with partial
2138 * dumping.
2139 */
29dd54b7
AC		 2140 data = vzalloc(tmp.len);
2141 if (!data)
2142 return -ENOMEM;
2143 ret = ops->get_dump_data(dev, &dump, data);
2144 if (ret)
2145 goto out;
2146
c590b5e2
MS		 2147 /* There are two sane possibilities:
2148 * 1. The driver's .get_dump_data() does not touch dump.len.
2149 * 2. Or it may set dump.len to how much it really writes, which
2150 * should be tmp.len (or len if it can do a partial dump).
2151 * In any case respond to userspace with the actual length of data
2152 * it's receiving.
2153 */
2154 WARN_ON(dump.len != len && dump.len != tmp.len);
2155 dump.len = len;
2156
29dd54b7
AC		 2157 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2158 ret = -EFAULT;
2159 goto out;
2160 }
2161 useraddr += offsetof(struct ethtool_dump, data);
2162 if (copy_to_user(useraddr, data, len))
2163 ret = -EFAULT;
2164out:
2165 vfree(data);
2166 return ret;
2167}
2168
c8f3a8c3
RC		 2169static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2170{
c8f3a8c3 2171 struct ethtool_ts_info info;
5b071c59 2172 int err;
c8f3a8c3 2173
5b071c59 2174 err = __ethtool_get_ts_info(dev, &info);
c8f3a8c3
RC		 2175 if (err)
2176 return err;
2177
2178 if (copy_to_user(useraddr, &info, sizeof(info)))
5b071c59 2179 return -EFAULT;
c8f3a8c3 2180
5b071c59 2181 return 0;
c8f3a8c3
RC		 2182}
2183
2f438366
ES		 2184static int __ethtool_get_module_info(struct net_device *dev,
2185 struct ethtool_modinfo *modinfo)
2186{
2187 const struct ethtool_ops *ops = dev->ethtool_ops;
2188 struct phy_device *phydev = dev->phydev;
2189
e679c9c1
RK		 2190 if (dev->sfp_bus)
2191 return sfp_get_module_info(dev->sfp_bus, modinfo);
2192
2f438366
ES		 2193 if (phydev && phydev->drv && phydev->drv->module_info)
2194 return phydev->drv->module_info(phydev, modinfo);
2195
2196 if (ops->get_module_info)
2197 return ops->get_module_info(dev, modinfo);
2198
2199 return -EOPNOTSUPP;
2200}
2201
41c3cb6d
SH		 2202static int ethtool_get_module_info(struct net_device *dev,
2203 void __user *useraddr)
2204{
2205 int ret;
2206 struct ethtool_modinfo modinfo;
41c3cb6d
SH		 2207
2208 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2209 return -EFAULT;
2210
2f438366 2211 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2212 if (ret)
2213 return ret;
2214
2215 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2216 return -EFAULT;
2217
2218 return 0;
2219}
2220
2f438366
ES		 2221static int __ethtool_get_module_eeprom(struct net_device *dev,
2222 struct ethtool_eeprom *ee, u8 *data)
2223{
2224 const struct ethtool_ops *ops = dev->ethtool_ops;
2225 struct phy_device *phydev = dev->phydev;
2226
e679c9c1
RK		 2227 if (dev->sfp_bus)
2228 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2229
2f438366
ES		 2230 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2231 return phydev->drv->module_eeprom(phydev, ee, data);
2232
2233 if (ops->get_module_eeprom)
2234 return ops->get_module_eeprom(dev, ee, data);
2235
2236 return -EOPNOTSUPP;
2237}
2238
41c3cb6d
SH		 2239static int ethtool_get_module_eeprom(struct net_device *dev,
2240 void __user *useraddr)
2241{
2242 int ret;
2243 struct ethtool_modinfo modinfo;
41c3cb6d 2244
2f438366 2245 ret = __ethtool_get_module_info(dev, &modinfo);
41c3cb6d
SH		 2246 if (ret)
2247 return ret;
2248
2f438366
ES		 2249 return ethtool_get_any_eeprom(dev, useraddr,
2250 __ethtool_get_module_eeprom,
41c3cb6d
SH		 2251 modinfo.eeprom_len);
2252}
2253
f0db9b07
GV		 2254static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2255{
2256 switch (tuna->id) {
2257 case ETHTOOL_RX_COPYBREAK:
1255a505 2258 case ETHTOOL_TX_COPYBREAK:
f0db9b07
GV		 2259 if (tuna->len != sizeof(u32) ||
2260 tuna->type_id != ETHTOOL_TUNABLE_U32)
2261 return -EINVAL;
2262 break;
e1577c1c
IK		 2263 case ETHTOOL_PFC_PREVENTION_TOUT:
2264 if (tuna->len != sizeof(u16) ||
2265 tuna->type_id != ETHTOOL_TUNABLE_U16)
2266 return -EINVAL;
2267 break;
f0db9b07
GV		 2268 default:
2269 return -EINVAL;
2270 }
2271
2272 return 0;
2273}
2274
2275static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2276{
2277 int ret;
2278 struct ethtool_tunable tuna;
2279 const struct ethtool_ops *ops = dev->ethtool_ops;
2280 void *data;
2281
2282 if (!ops->get_tunable)
2283 return -EOPNOTSUPP;
2284 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2285 return -EFAULT;
2286 ret = ethtool_tunable_valid(&tuna);
2287 if (ret)
2288 return ret;
2289 data = kmalloc(tuna.len, GFP_USER);
2290 if (!data)
2291 return -ENOMEM;
2292 ret = ops->get_tunable(dev, &tuna, data);
2293 if (ret)
2294 goto out;
2295 useraddr += sizeof(tuna);
2296 ret = -EFAULT;
2297 if (copy_to_user(useraddr, data, tuna.len))
2298 goto out;
2299 ret = 0;
2300
2301out:
2302 kfree(data);
2303 return ret;
2304}
2305
2306static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2307{
2308 int ret;
2309 struct ethtool_tunable tuna;
2310 const struct ethtool_ops *ops = dev->ethtool_ops;
2311 void *data;
2312
2313 if (!ops->set_tunable)
2314 return -EOPNOTSUPP;
2315 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2316 return -EFAULT;
2317 ret = ethtool_tunable_valid(&tuna);
2318 if (ret)
2319 return ret;
f0db9b07 2320 useraddr += sizeof(tuna);
30e7e3ec
AV		 2321 data = memdup_user(useraddr, tuna.len);
2322 if (IS_ERR(data))
2323 return PTR_ERR(data);
f0db9b07
GV		 2324 ret = ops->set_tunable(dev, &tuna, data);
2325
f0db9b07
GV		 2326 kfree(data);
2327 return ret;
2328}
2329
3499e87e
AB		 2330static noinline_for_stack int
2331ethtool_get_per_queue_coalesce(struct net_device *dev,
2332 void __user *useraddr,
2333 struct ethtool_per_queue_op *per_queue_opt)
421797b1
KL		 2334{
2335 u32 bit;
2336 int ret;
2337 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2338
2339 if (!dev->ethtool_ops->get_per_queue_coalesce)
2340 return -EOPNOTSUPP;
2341
2342 useraddr += sizeof(*per_queue_opt);
2343
3aa56885
YN		 2344 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2345 MAX_NUM_QUEUE);
421797b1
KL		 2346
2347 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2348 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2349
2350 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2351 if (ret != 0)
2352 return ret;
2353 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2354 return -EFAULT;
2355 useraddr += sizeof(coalesce);
2356 }
2357
2358 return 0;
2359}
2360
3499e87e
AB		 2361static noinline_for_stack int
2362ethtool_set_per_queue_coalesce(struct net_device *dev,
2363 void __user *useraddr,
2364 struct ethtool_per_queue_op *per_queue_opt)
f38d138a
KL		 2365{
2366 u32 bit;
2367 int i, ret = 0;
2368 int n_queue;
2369 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2370 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2371
2372 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2373 (!dev->ethtool_ops->get_per_queue_coalesce))
2374 return -EOPNOTSUPP;
2375
2376 useraddr += sizeof(*per_queue_opt);
2377
3aa56885 2378 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
f38d138a
KL		 2379 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2380 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2381 if (!backup)
2382 return -ENOMEM;
2383
2384 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2385 struct ethtool_coalesce coalesce;
2386
2387 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2388 if (ret != 0)
2389 goto roll_back;
2390
2391 tmp++;
2392
2393 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2394 ret = -EFAULT;
2395 goto roll_back;
2396 }
2397
95cddcb5
JK		 2398 if (!ethtool_set_coalesce_supported(dev, &coalesce)) {
2399 ret = -EOPNOTSUPP;
2400 goto roll_back;
2401 }
2402
f38d138a
KL		 2403 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2404 if (ret != 0)
2405 goto roll_back;
2406
2407 useraddr += sizeof(coalesce);
2408 }
2409
2410roll_back:
2411 if (ret != 0) {
2412 tmp = backup;
2413 for_each_set_bit(i, queue_mask, bit) {
2414 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2415 tmp++;
2416 }
2417 }
2418 kfree(backup);
2419
2420 return ret;
2421}
2422
3499e87e 2423static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
58f5bbe3 2424 void __user *useraddr, u32 sub_cmd)
ac2c7ad0
KL		 2425{
2426 struct ethtool_per_queue_op per_queue_opt;
2427
2428 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2429 return -EFAULT;
2430
58f5bbe3
WW		 2431 if (per_queue_opt.sub_command != sub_cmd)
2432 return -EINVAL;
2433
ac2c7ad0 2434 switch (per_queue_opt.sub_command) {
421797b1
KL		 2435 case ETHTOOL_GCOALESCE:
2436 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
f38d138a
KL		 2437 case ETHTOOL_SCOALESCE:
2438 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
ac2c7ad0
KL		 2439 default:
2440 return -EOPNOTSUPP;
2441 };
2442}
2443
968ad9da
RL		 2444static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2445{
2446 switch (tuna->id) {
65feddd5 2447 case ETHTOOL_PHY_DOWNSHIFT:
3aeb0803 2448 case ETHTOOL_PHY_FAST_LINK_DOWN:
65feddd5
RL		 2449 if (tuna->len != sizeof(u8) ||
2450 tuna->type_id != ETHTOOL_TUNABLE_U8)
2451 return -EINVAL;
2452 break;
9f2f13f4
AA		 2453 case ETHTOOL_PHY_EDPD:
2454 if (tuna->len != sizeof(u16) ||
2455 tuna->type_id != ETHTOOL_TUNABLE_U16)
2456 return -EINVAL;
2457 break;
968ad9da
RL		 2458 default:
2459 return -EINVAL;
2460 }
2461
2462 return 0;
2463}
2464
2465static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2466{
2467 int ret;
2468 struct ethtool_tunable tuna;
2469 struct phy_device *phydev = dev->phydev;
2470 void *data;
2471
2472 if (!(phydev && phydev->drv && phydev->drv->get_tunable))
2473 return -EOPNOTSUPP;
2474
2475 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2476 return -EFAULT;
2477 ret = ethtool_phy_tunable_valid(&tuna);
2478 if (ret)
2479 return ret;
2480 data = kmalloc(tuna.len, GFP_USER);
2481 if (!data)
2482 return -ENOMEM;
4b65246b 2483 mutex_lock(&phydev->lock);
968ad9da 2484 ret = phydev->drv->get_tunable(phydev, &tuna, data);
4b65246b 2485 mutex_unlock(&phydev->lock);
968ad9da
RL		 2486 if (ret)
2487 goto out;
2488 useraddr += sizeof(tuna);
2489 ret = -EFAULT;
2490 if (copy_to_user(useraddr, data, tuna.len))
2491 goto out;
2492 ret = 0;
2493
2494out:
2495 kfree(data);
2496 return ret;
2497}
2498
2499static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2500{
2501 int ret;
2502 struct ethtool_tunable tuna;
2503 struct phy_device *phydev = dev->phydev;
2504 void *data;
2505
2506 if (!(phydev && phydev->drv && phydev->drv->set_tunable))
2507 return -EOPNOTSUPP;
2508 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2509 return -EFAULT;
2510 ret = ethtool_phy_tunable_valid(&tuna);
2511 if (ret)
2512 return ret;
968ad9da 2513 useraddr += sizeof(tuna);
30e7e3ec
AV		 2514 data = memdup_user(useraddr, tuna.len);
2515 if (IS_ERR(data))
2516 return PTR_ERR(data);
4b65246b 2517 mutex_lock(&phydev->lock);
968ad9da 2518 ret = phydev->drv->set_tunable(phydev, &tuna, data);
4b65246b 2519 mutex_unlock(&phydev->lock);
968ad9da 2520
968ad9da
RL		 2521 kfree(data);
2522 return ret;
2523}
2524
1a5f3da2
VSR		 2525static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2526{
e83887f6 2527 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
a6d50512 2528 int rc;
1a5f3da2
VSR		 2529
2530 if (!dev->ethtool_ops->get_fecparam)
2531 return -EOPNOTSUPP;
2532
a6d50512
EC		 2533 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2534 if (rc)
2535 return rc;
1a5f3da2
VSR		 2536
2537 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2538 return -EFAULT;
2539 return 0;
2540}
2541
2542static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2543{
2544 struct ethtool_fecparam fecparam;
2545
2546 if (!dev->ethtool_ops->set_fecparam)
2547 return -EOPNOTSUPP;
2548
2549 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2550 return -EFAULT;
2551
2552 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2553}
2554
600fed5e 2555/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 2556
881d966b 2557int dev_ethtool(struct net *net, struct ifreq *ifr)
1da177e4 2558{
881d966b 2559 struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
1da177e4 2560 void __user *useraddr = ifr->ifr_data;
ac2c7ad0 2561 u32 ethcmd, sub_cmd;
1da177e4 2562 int rc;
b29d3145 2563 netdev_features_t old_features;
1da177e4 2564
1da177e4
LT		 2565 if (!dev || !netif_device_present(dev))
2566 return -ENODEV;
2567
97f8aefb 2568 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
1da177e4
LT		 2569 return -EFAULT;
2570
ac2c7ad0
KL		 2571 if (ethcmd == ETHTOOL_PERQUEUE) {
2572 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2573 return -EFAULT;
2574 } else {
2575 sub_cmd = ethcmd;
2576 }
75f3123c 2577 /* Allow some commands to be done by anyone */
ac2c7ad0 2578 switch (sub_cmd) {
0fdc100b 2579 case ETHTOOL_GSET:
75f3123c 2580 case ETHTOOL_GDRVINFO:
75f3123c 2581 case ETHTOOL_GMSGLVL:
2da45db2 2582 case ETHTOOL_GLINK:
75f3123c
SH		 2583 case ETHTOOL_GCOALESCE:
2584 case ETHTOOL_GRINGPARAM:
2585 case ETHTOOL_GPAUSEPARAM:
2586 case ETHTOOL_GRXCSUM:
2587 case ETHTOOL_GTXCSUM:
2588 case ETHTOOL_GSG:
f80400a2 2589 case ETHTOOL_GSSET_INFO:
75f3123c 2590 case ETHTOOL_GSTRINGS:
2da45db2 2591 case ETHTOOL_GSTATS:
f3a40945 2592 case ETHTOOL_GPHYSTATS:
75f3123c
SH		 2593 case ETHTOOL_GTSO:
2594 case ETHTOOL_GPERMADDR:
474ff260 2595 case ETHTOOL_GUFO:
75f3123c 2596 case ETHTOOL_GGSO:
1cab819b 2597 case ETHTOOL_GGRO:
339bf024
JG		 2598 case ETHTOOL_GFLAGS:
2599 case ETHTOOL_GPFLAGS:
0853ad66 2600 case ETHTOOL_GRXFH:
59089d8d
SB		 2601 case ETHTOOL_GRXRINGS:
2602 case ETHTOOL_GRXCLSRLCNT:
2603 case ETHTOOL_GRXCLSRULE:
2604 case ETHTOOL_GRXCLSRLALL:
2da45db2 2605 case ETHTOOL_GRXFHINDIR:
3de0b592 2606 case ETHTOOL_GRSSH:
5455c699 2607 case ETHTOOL_GFEATURES:
2da45db2 2608 case ETHTOOL_GCHANNELS:
c8f3a8c3 2609 case ETHTOOL_GET_TS_INFO:
2da45db2 2610 case ETHTOOL_GEEE:
f0db9b07 2611 case ETHTOOL_GTUNABLE:
968ad9da 2612 case ETHTOOL_PHY_GTUNABLE:
8006f6bf 2613 case ETHTOOL_GLINKSETTINGS:
1a5f3da2 2614 case ETHTOOL_GFECPARAM:
75f3123c
SH		 2615 break;
2616 default:
5e1fccc0 2617 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 2618 return -EPERM;
2619 }
2620
97f8aefb 2621 if (dev->ethtool_ops->begin) {
2622 rc = dev->ethtool_ops->begin(dev);
2623 if (rc < 0)
1da177e4 2624 return rc;
97f8aefb 2625 }
d8a33ac4
SH		 2626 old_features = dev->features;
2627
1da177e4
LT		 2628 switch (ethcmd) {
2629 case ETHTOOL_GSET:
2630 rc = ethtool_get_settings(dev, useraddr);
2631 break;
2632 case ETHTOOL_SSET:
2633 rc = ethtool_set_settings(dev, useraddr);
2634 break;
2635 case ETHTOOL_GDRVINFO:
2636 rc = ethtool_get_drvinfo(dev, useraddr);
1da177e4
LT		 2637 break;
2638 case ETHTOOL_GREGS:
2639 rc = ethtool_get_regs(dev, useraddr);
2640 break;
2641 case ETHTOOL_GWOL:
2642 rc = ethtool_get_wol(dev, useraddr);
2643 break;
2644 case ETHTOOL_SWOL:
2645 rc = ethtool_set_wol(dev, useraddr);
2646 break;
2647 case ETHTOOL_GMSGLVL:
13c99b24
JG		 2648 rc = ethtool_get_value(dev, useraddr, ethcmd,
2649 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 2650 break;
2651 case ETHTOOL_SMSGLVL:
13c99b24
JG		 2652 rc = ethtool_set_value_void(dev, useraddr,
2653 dev->ethtool_ops->set_msglevel);
0bda7af3
MK		 2654 if (!rc)
2655 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL);
1da177e4 2656 break;
80f12ecc
YM		 2657 case ETHTOOL_GEEE:
2658 rc = ethtool_get_eee(dev, useraddr);
2659 break;
2660 case ETHTOOL_SEEE:
2661 rc = ethtool_set_eee(dev, useraddr);
2662 break;
1da177e4
LT		 2663 case ETHTOOL_NWAY_RST:
2664 rc = ethtool_nway_reset(dev);
2665 break;
2666 case ETHTOOL_GLINK:
e596e6e4 2667 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 2668 break;
2669 case ETHTOOL_GEEPROM:
2670 rc = ethtool_get_eeprom(dev, useraddr);
2671 break;
2672 case ETHTOOL_SEEPROM:
2673 rc = ethtool_set_eeprom(dev, useraddr);
2674 break;
2675 case ETHTOOL_GCOALESCE:
2676 rc = ethtool_get_coalesce(dev, useraddr);
2677 break;
2678 case ETHTOOL_SCOALESCE:
2679 rc = ethtool_set_coalesce(dev, useraddr);
2680 break;
2681 case ETHTOOL_GRINGPARAM:
2682 rc = ethtool_get_ringparam(dev, useraddr);
2683 break;
2684 case ETHTOOL_SRINGPARAM:
2685 rc = ethtool_set_ringparam(dev, useraddr);
2686 break;
2687 case ETHTOOL_GPAUSEPARAM:
2688 rc = ethtool_get_pauseparam(dev, useraddr);
2689 break;
2690 case ETHTOOL_SPAUSEPARAM:
2691 rc = ethtool_set_pauseparam(dev, useraddr);
2692 break;
1da177e4
LT		 2693 case ETHTOOL_TEST:
2694 rc = ethtool_self_test(dev, useraddr);
2695 break;
2696 case ETHTOOL_GSTRINGS:
2697 rc = ethtool_get_strings(dev, useraddr);
2698 break;
2699 case ETHTOOL_PHYS_ID:
2700 rc = ethtool_phys_id(dev, useraddr);
2701 break;
2702 case ETHTOOL_GSTATS:
2703 rc = ethtool_get_stats(dev, useraddr);
2704 break;
a6f9a705
JW		 2705 case ETHTOOL_GPERMADDR:
2706 rc = ethtool_get_perm_addr(dev, useraddr);
2707 break;
3ae7c0b2 2708 case ETHTOOL_GFLAGS:
13c99b24 2709 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 2710 __ethtool_get_flags);
3ae7c0b2
JG		 2711 break;
2712 case ETHTOOL_SFLAGS:
da8ac86c 2713 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 2714 break;
339bf024 2715 case ETHTOOL_GPFLAGS:
13c99b24
JG		 2716 rc = ethtool_get_value(dev, useraddr, ethcmd,
2717 dev->ethtool_ops->get_priv_flags);
111dcba3
MK		 2718 if (!rc)
2719 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL);
339bf024
JG		 2720 break;
2721 case ETHTOOL_SPFLAGS:
13c99b24
JG		 2722 rc = ethtool_set_value(dev, useraddr,
2723 dev->ethtool_ops->set_priv_flags);
339bf024 2724 break;
0853ad66 2725 case ETHTOOL_GRXFH:
59089d8d
SB		 2726 case ETHTOOL_GRXRINGS:
2727 case ETHTOOL_GRXCLSRLCNT:
2728 case ETHTOOL_GRXCLSRULE:
2729 case ETHTOOL_GRXCLSRLALL:
bf988435 2730 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 2731 break;
2732 case ETHTOOL_SRXFH:
59089d8d
SB		 2733 case ETHTOOL_SRXCLSRLDEL:
2734 case ETHTOOL_SRXCLSRLINS:
bf988435 2735 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 2736 break;
05c6a8d7
AK		 2737 case ETHTOOL_FLASHDEV:
2738 rc = ethtool_flash_device(dev, useraddr);
2739 break;
d73d3a8c
BH		 2740 case ETHTOOL_RESET:
2741 rc = ethtool_reset(dev, useraddr);
2742 break;
723b2f57
JG		 2743 case ETHTOOL_GSSET_INFO:
2744 rc = ethtool_get_sset_info(dev, useraddr);
2745 break;
a5b6ee29
BH		 2746 case ETHTOOL_GRXFHINDIR:
2747 rc = ethtool_get_rxfh_indir(dev, useraddr);
2748 break;
2749 case ETHTOOL_SRXFHINDIR:
2750 rc = ethtool_set_rxfh_indir(dev, useraddr);
2751 break;
3de0b592
VD		 2752 case ETHTOOL_GRSSH:
2753 rc = ethtool_get_rxfh(dev, useraddr);
2754 break;
2755 case ETHTOOL_SRSSH:
2756 rc = ethtool_set_rxfh(dev, useraddr);
2757 break;
5455c699
MM		 2758 case ETHTOOL_GFEATURES:
2759 rc = ethtool_get_features(dev, useraddr);
2760 break;
2761 case ETHTOOL_SFEATURES:
2762 rc = ethtool_set_features(dev, useraddr);
2763 break;
0a417704 2764 case ETHTOOL_GTXCSUM:
e83d360d 2765 case ETHTOOL_GRXCSUM:
0a417704
MM		 2766 case ETHTOOL_GSG:
2767 case ETHTOOL_GTSO:
0a417704
MM		 2768 case ETHTOOL_GGSO:
2769 case ETHTOOL_GGRO:
2770 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2771 break;
2772 case ETHTOOL_STXCSUM:
e83d360d 2773 case ETHTOOL_SRXCSUM:
0a417704
MM		 2774 case ETHTOOL_SSG:
2775 case ETHTOOL_STSO:
0a417704
MM		 2776 case ETHTOOL_SGSO:
2777 case ETHTOOL_SGRO:
2778 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2779 break;
8b5933c3 2780 case ETHTOOL_GCHANNELS:
2781 rc = ethtool_get_channels(dev, useraddr);
2782 break;
2783 case ETHTOOL_SCHANNELS:
2784 rc = ethtool_set_channels(dev, useraddr);
2785 break;
29dd54b7
AC		 2786 case ETHTOOL_SET_DUMP:
2787 rc = ethtool_set_dump(dev, useraddr);
2788 break;
2789 case ETHTOOL_GET_DUMP_FLAG:
2790 rc = ethtool_get_dump_flag(dev, useraddr);
2791 break;
2792 case ETHTOOL_GET_DUMP_DATA:
2793 rc = ethtool_get_dump_data(dev, useraddr);
2794 break;
c8f3a8c3
RC		 2795 case ETHTOOL_GET_TS_INFO:
2796 rc = ethtool_get_ts_info(dev, useraddr);
2797 break;
41c3cb6d
SH		 2798 case ETHTOOL_GMODULEINFO:
2799 rc = ethtool_get_module_info(dev, useraddr);
2800 break;
2801 case ETHTOOL_GMODULEEEPROM:
2802 rc = ethtool_get_module_eeprom(dev, useraddr);
2803 break;
f0db9b07
GV		 2804 case ETHTOOL_GTUNABLE:
2805 rc = ethtool_get_tunable(dev, useraddr);
2806 break;
2807 case ETHTOOL_STUNABLE:
2808 rc = ethtool_set_tunable(dev, useraddr);
2809 break;
f3a40945
AL		 2810 case ETHTOOL_GPHYSTATS:
2811 rc = ethtool_get_phy_stats(dev, useraddr);
2812 break;
ac2c7ad0 2813 case ETHTOOL_PERQUEUE:
58f5bbe3 2814 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
ac2c7ad0 2815 break;
3f1ac7a7
DD		 2816 case ETHTOOL_GLINKSETTINGS:
2817 rc = ethtool_get_link_ksettings(dev, useraddr);
2818 break;
2819 case ETHTOOL_SLINKSETTINGS:
2820 rc = ethtool_set_link_ksettings(dev, useraddr);
2821 break;
968ad9da
RL		 2822 case ETHTOOL_PHY_GTUNABLE:
2823 rc = get_phy_tunable(dev, useraddr);
2824 break;
2825 case ETHTOOL_PHY_STUNABLE:
2826 rc = set_phy_tunable(dev, useraddr);
2827 break;
1a5f3da2
VSR		 2828 case ETHTOOL_GFECPARAM:
2829 rc = ethtool_get_fecparam(dev, useraddr);
2830 break;
2831 case ETHTOOL_SFECPARAM:
2832 rc = ethtool_set_fecparam(dev, useraddr);
2833 break;
1da177e4 2834 default:
61a44b9c 2835 rc = -EOPNOTSUPP;
1da177e4 2836 }
4ec93edb 2837
e71a4783 2838 if (dev->ethtool_ops->complete)
1da177e4 2839 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 2840
2841 if (old_features != dev->features)
2842 netdev_features_change(dev);
2843
1da177e4 2844 return rc;
1da177e4 2845}
eca4205f
PNA		 2846
2847struct ethtool_rx_flow_key {
2848 struct flow_dissector_key_basic basic;
2849 union {
2850 struct flow_dissector_key_ipv4_addrs ipv4;
2851 struct flow_dissector_key_ipv6_addrs ipv6;
2852 };
2853 struct flow_dissector_key_ports tp;
2854 struct flow_dissector_key_ip ip;
2855 struct flow_dissector_key_vlan vlan;
2856 struct flow_dissector_key_eth_addrs eth_addrs;
2857} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
2858
2859struct ethtool_rx_flow_match {
2860 struct flow_dissector dissector;
2861 struct ethtool_rx_flow_key key;
2862 struct ethtool_rx_flow_key mask;
2863};
2864
2865struct ethtool_rx_flow_rule *
2866ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
2867{
2868 const struct ethtool_rx_flow_spec *fs = input->fs;
2869 static struct in6_addr zero_addr = {};
2870 struct ethtool_rx_flow_match *match;
2871 struct ethtool_rx_flow_rule *flow;
2872 struct flow_action_entry *act;
2873
2874 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
2875 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
2876 if (!flow)
2877 return ERR_PTR(-ENOMEM);
2878
2879 /* ethtool_rx supports only one single action per rule. */
2880 flow->rule = flow_rule_alloc(1);
2881 if (!flow->rule) {
2882 kfree(flow);
2883 return ERR_PTR(-ENOMEM);
2884 }
2885
2886 match = (struct ethtool_rx_flow_match *)flow->priv;
2887 flow->rule->match.dissector = &match->dissector;
2888 flow->rule->match.mask = &match->mask;
2889 flow->rule->match.key = &match->key;
2890
2891 match->mask.basic.n_proto = htons(0xffff);
2892
2893 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
5b9469a2
MC		 2894 case ETHER_FLOW: {
2895 const struct ethhdr *ether_spec, *ether_m_spec;
2896
2897 ether_spec = &fs->h_u.ether_spec;
2898 ether_m_spec = &fs->m_u.ether_spec;
2899
2900 if (!is_zero_ether_addr(ether_m_spec->h_source)) {
2901 ether_addr_copy(match->key.eth_addrs.src,
2902 ether_spec->h_source);
2903 ether_addr_copy(match->mask.eth_addrs.src,
2904 ether_m_spec->h_source);
2905 }
2906 if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
2907 ether_addr_copy(match->key.eth_addrs.dst,
2908 ether_spec->h_dest);
2909 ether_addr_copy(match->mask.eth_addrs.dst,
2910 ether_m_spec->h_dest);
2911 }
2912 if (ether_m_spec->h_proto) {
2913 match->key.basic.n_proto = ether_spec->h_proto;
2914 match->mask.basic.n_proto = ether_m_spec->h_proto;
2915 }
2916 }
2917 break;
eca4205f
PNA		 2918 case TCP_V4_FLOW:
2919 case UDP_V4_FLOW: {
2920 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
2921
2922 match->key.basic.n_proto = htons(ETH_P_IP);
2923
2924 v4_spec = &fs->h_u.tcp_ip4_spec;
2925 v4_m_spec = &fs->m_u.tcp_ip4_spec;
2926
2927 if (v4_m_spec->ip4src) {
2928 match->key.ipv4.src = v4_spec->ip4src;
2929 match->mask.ipv4.src = v4_m_spec->ip4src;
2930 }
2931 if (v4_m_spec->ip4dst) {
2932 match->key.ipv4.dst = v4_spec->ip4dst;
2933 match->mask.ipv4.dst = v4_m_spec->ip4dst;
2934 }
2935 if (v4_m_spec->ip4src ||
2936 v4_m_spec->ip4dst) {
2937 match->dissector.used_keys |=
2938 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
2939 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
2940 offsetof(struct ethtool_rx_flow_key, ipv4);
2941 }
2942 if (v4_m_spec->psrc) {
2943 match->key.tp.src = v4_spec->psrc;
2944 match->mask.tp.src = v4_m_spec->psrc;
2945 }
2946 if (v4_m_spec->pdst) {
2947 match->key.tp.dst = v4_spec->pdst;
2948 match->mask.tp.dst = v4_m_spec->pdst;
2949 }
2950 if (v4_m_spec->psrc ||
2951 v4_m_spec->pdst) {
2952 match->dissector.used_keys |=
2953 BIT(FLOW_DISSECTOR_KEY_PORTS);
2954 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
2955 offsetof(struct ethtool_rx_flow_key, tp);
2956 }
2957 if (v4_m_spec->tos) {
2958 match->key.ip.tos = v4_spec->tos;
2959 match->mask.ip.tos = v4_m_spec->tos;
2960 match->dissector.used_keys |=
2961 BIT(FLOW_DISSECTOR_KEY_IP);
2962 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
2963 offsetof(struct ethtool_rx_flow_key, ip);
2964 }
2965 }
2966 break;
2967 case TCP_V6_FLOW:
2968 case UDP_V6_FLOW: {
2969 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
2970
2971 match->key.basic.n_proto = htons(ETH_P_IPV6);
2972
2973 v6_spec = &fs->h_u.tcp_ip6_spec;
2974 v6_m_spec = &fs->m_u.tcp_ip6_spec;
2975 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
2976 memcpy(&match->key.ipv6.src, v6_spec->ip6src,
2977 sizeof(match->key.ipv6.src));
2978 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
2979 sizeof(match->mask.ipv6.src));
2980 }
2981 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
2982 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
2983 sizeof(match->key.ipv6.dst));
2984 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
2985 sizeof(match->mask.ipv6.dst));
2986 }
2987 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
21a739c6 2988 memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
eca4205f
PNA		 2989 match->dissector.used_keys |=
2990 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
2991 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
2992 offsetof(struct ethtool_rx_flow_key, ipv6);
2993 }
2994 if (v6_m_spec->psrc) {
2995 match->key.tp.src = v6_spec->psrc;
2996 match->mask.tp.src = v6_m_spec->psrc;
2997 }
2998 if (v6_m_spec->pdst) {
2999 match->key.tp.dst = v6_spec->pdst;
3000 match->mask.tp.dst = v6_m_spec->pdst;
3001 }
3002 if (v6_m_spec->psrc ||
3003 v6_m_spec->pdst) {
3004 match->dissector.used_keys |=
3005 BIT(FLOW_DISSECTOR_KEY_PORTS);
3006 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3007 offsetof(struct ethtool_rx_flow_key, tp);
3008 }
3009 if (v6_m_spec->tclass) {
3010 match->key.ip.tos = v6_spec->tclass;
3011 match->mask.ip.tos = v6_m_spec->tclass;
3012 match->dissector.used_keys |=
3013 BIT(FLOW_DISSECTOR_KEY_IP);
3014 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3015 offsetof(struct ethtool_rx_flow_key, ip);
3016 }
3017 }
3018 break;
3019 default:
3020 ethtool_rx_flow_rule_destroy(flow);
3021 return ERR_PTR(-EINVAL);
3022 }
3023
3024 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3025 case TCP_V4_FLOW:
3026 case TCP_V6_FLOW:
3027 match->key.basic.ip_proto = IPPROTO_TCP;
3028 break;
3029 case UDP_V4_FLOW:
3030 case UDP_V6_FLOW:
3031 match->key.basic.ip_proto = IPPROTO_UDP;
3032 break;
3033 }
3034 match->mask.basic.ip_proto = 0xff;
3035
3036 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
3037 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
3038 offsetof(struct ethtool_rx_flow_key, basic);
3039
3040 if (fs->flow_type & FLOW_EXT) {
3041 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3042 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3043
b73484b2 3044 if (ext_m_spec->vlan_etype) {
eca4205f
PNA		 3045 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
3046 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
b73484b2 3047 }
eca4205f 3048
b73484b2 3049 if (ext_m_spec->vlan_tci) {
eca4205f
PNA		 3050 match->key.vlan.vlan_id =
3051 ntohs(ext_h_spec->vlan_tci) & 0x0fff;
3052 match->mask.vlan.vlan_id =
3053 ntohs(ext_m_spec->vlan_tci) & 0x0fff;
3054
f0d2ca15
MC		 3055 match->key.vlan.vlan_dei =
3056 !!(ext_h_spec->vlan_tci & htons(0x1000));
3057 match->mask.vlan.vlan_dei =
3058 !!(ext_m_spec->vlan_tci & htons(0x1000));
3059
eca4205f
PNA		 3060 match->key.vlan.vlan_priority =
3061 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
3062 match->mask.vlan.vlan_priority =
3063 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
b73484b2 3064 }
eca4205f 3065
b73484b2
MC		 3066 if (ext_m_spec->vlan_etype ||
3067 ext_m_spec->vlan_tci) {
eca4205f
PNA		 3068 match->dissector.used_keys |=
3069 BIT(FLOW_DISSECTOR_KEY_VLAN);
3070 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
3071 offsetof(struct ethtool_rx_flow_key, vlan);
3072 }
3073 }
3074 if (fs->flow_type & FLOW_MAC_EXT) {
3075 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3076 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3077
8b34ec65
NC		 3078 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
3079 ETH_ALEN);
3080 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
3081 ETH_ALEN);
3082
3083 match->dissector.used_keys |=
3084 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
3085 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
3086 offsetof(struct ethtool_rx_flow_key, eth_addrs);
eca4205f
PNA		 3087 }
3088
3089 act = &flow->rule->action.entries[0];
3090 switch (fs->ring_cookie) {
3091 case RX_CLS_FLOW_DISC:
3092 act->id = FLOW_ACTION_DROP;
3093 break;
3094 case RX_CLS_FLOW_WAKE:
3095 act->id = FLOW_ACTION_WAKE;
3096 break;
3097 default:
3098 act->id = FLOW_ACTION_QUEUE;
3099 if (fs->flow_type & FLOW_RSS)
3100 act->queue.ctx = input->rss_ctx;
3101
3102 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
3103 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
3104 break;
3105 }
3106
3107 return flow;
3108}
3109EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
3110
3111void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
3112{
3113 kfree(flow->rule);
3114 kfree(flow);
3115}
3116EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);
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