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Merge tag 'xfs-5.20-merge-8' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
[linux-block.git] / net / ethtool / ioctl.c
CommitLineData
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
dd98d289 10#include <linux/compat.h>
b6459415 11#include <linux/etherdevice.h>
1da177e4
LT		 12#include <linux/module.h>
13#include <linux/types.h>
4fc268d2 14#include <linux/capability.h>
1da177e4
LT		 15#include <linux/errno.h>
16#include <linux/ethtool.h>
17#include <linux/netdevice.h>
c8f3a8c3
RC		 18#include <linux/net_tstamp.h>
19#include <linux/phy.h>
d17792eb 20#include <linux/bitops.h>
97f8aefb 21#include <linux/uaccess.h>
73da16c2 22#include <linux/vmalloc.h>
e679c9c1 23#include <linux/sfp.h>
5a0e3ad6 24#include <linux/slab.h>
68f512f2 25#include <linux/rtnetlink.h>
174cd4b1 26#include <linux/sched/signal.h>
960fb622 27#include <linux/net.h>
f32a2137 28#include <linux/pm_runtime.h>
ddb6e99e 29#include <net/devlink.h>
a71506a4 30#include <net/xdp_sock_drv.h>
eca4205f 31#include <net/flow_offload.h>
73286734 32#include <linux/ethtool_netlink.h>
1c79031f 33#include <generated/utsrelease.h>
d44e1310
MK		 34#include "common.h"
35
095cfcfe
JK		 36/* State held across locks and calls for commands which have devlink fallback */
37struct ethtool_devlink_compat {
1af0a094 38 struct devlink *devlink;
095cfcfe
JK		 39 union {
40 struct ethtool_flash efl;
41 struct ethtool_drvinfo info;
42 };
43};
44
1af0a094
JK		 45static struct devlink *netdev_to_devlink_get(struct net_device *dev)
46{
47 struct devlink_port *devlink_port;
48
49 if (!dev->netdev_ops->ndo_get_devlink_port)
50 return NULL;
51
52 devlink_port = dev->netdev_ops->ndo_get_devlink_port(dev);
53 if (!devlink_port)
54 return NULL;
55
56 return devlink_try_get(devlink_port->devlink);
57}
58
4ec93edb 59/*
1da177e4
LT		 60 * Some useful ethtool_ops methods that're device independent.
61 * If we find that all drivers want to do the same thing here,
62 * we can turn these into dev_() function calls.
63 */
64
65u32 ethtool_op_get_link(struct net_device *dev)
66{
67 return netif_carrier_ok(dev) ? 1 : 0;
68}
97f8aefb 69EXPORT_SYMBOL(ethtool_op_get_link);
1da177e4 70
02eacbd0
RC		 71int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info)
72{
73 info->so_timestamping =
74 SOF_TIMESTAMPING_TX_SOFTWARE |
75 SOF_TIMESTAMPING_RX_SOFTWARE |
76 SOF_TIMESTAMPING_SOFTWARE;
77 info->phc_index = -1;
78 return 0;
79}
80EXPORT_SYMBOL(ethtool_op_get_ts_info);
81
1da177e4
LT		 82/* Handlers for each ethtool command */
83
5455c699
MM		 84static int ethtool_get_features(struct net_device *dev, void __user *useraddr)
85{
86 struct ethtool_gfeatures cmd = {
87 .cmd = ETHTOOL_GFEATURES,
88 .size = ETHTOOL_DEV_FEATURE_WORDS,
89 };
475414f6 90 struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
5455c699
MM		 91 u32 __user *sizeaddr;
92 u32 copy_size;
475414f6
MM		 93 int i;
94
95 /* in case feature bits run out again */
09da71b1 96 BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t));
475414f6
MM		 97
98 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 99 features[i].available = (u32)(dev->hw_features >> (32 * i));
100 features[i].requested = (u32)(dev->wanted_features >> (32 * i));
101 features[i].active = (u32)(dev->features >> (32 * i));
102 features[i].never_changed =
103 (u32)(NETIF_F_NEVER_CHANGE >> (32 * i));
475414f6 104 }
5455c699
MM		 105
106 sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size);
107 if (get_user(copy_size, sizeaddr))
108 return -EFAULT;
109
110 if (copy_size > ETHTOOL_DEV_FEATURE_WORDS)
111 copy_size = ETHTOOL_DEV_FEATURE_WORDS;
112
113 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
114 return -EFAULT;
115 useraddr += sizeof(cmd);
ed717613
GS		 116 if (copy_to_user(useraddr, features,
117 array_size(copy_size, sizeof(*features))))
5455c699
MM		 118 return -EFAULT;
119
120 return 0;
121}
122
123static int ethtool_set_features(struct net_device *dev, void __user *useraddr)
124{
125 struct ethtool_sfeatures cmd;
126 struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS];
475414f6
MM		 127 netdev_features_t wanted = 0, valid = 0;
128 int i, ret = 0;
5455c699
MM		 129
130 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
131 return -EFAULT;
132 useraddr += sizeof(cmd);
133
134 if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS)
135 return -EINVAL;
136
137 if (copy_from_user(features, useraddr, sizeof(features)))
138 return -EFAULT;
139
475414f6 140 for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) {
09da71b1
MM		 141 valid |= (netdev_features_t)features[i].valid << (32 * i);
142 wanted |= (netdev_features_t)features[i].requested << (32 * i);
475414f6
MM		 143 }
144
145 if (valid & ~NETIF_F_ETHTOOL_BITS)
5455c699
MM		 146 return -EINVAL;
147
475414f6
MM		 148 if (valid & ~dev->hw_features) {
149 valid &= dev->hw_features;
5455c699
MM		 150 ret |= ETHTOOL_F_UNSUPPORTED;
151 }
152
475414f6
MM		 153 dev->wanted_features &= ~valid;
154 dev->wanted_features |= wanted & valid;
6cb6a27c 155 __netdev_update_features(dev);
5455c699 156
475414f6 157 if ((dev->wanted_features ^ dev->features) & valid)
5455c699
MM		 158 ret |= ETHTOOL_F_WISH;
159
160 return ret;
161}
162
340ae165
MM		 163static int __ethtool_get_sset_count(struct net_device *dev, int sset)
164{
17809516 165 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
340ae165
MM		 166 const struct ethtool_ops *ops = dev->ethtool_ops;
167
5455c699
MM		 168 if (sset == ETH_SS_FEATURES)
169 return ARRAY_SIZE(netdev_features_strings);
170
892311f6
EP		 171 if (sset == ETH_SS_RSS_HASH_FUNCS)
172 return ARRAY_SIZE(rss_hash_func_strings);
173
a4244b0c
HHZ		 174 if (sset == ETH_SS_TUNABLES)
175 return ARRAY_SIZE(tunable_strings);
176
968ad9da
RL		 177 if (sset == ETH_SS_PHY_TUNABLES)
178 return ARRAY_SIZE(phy_tunable_strings);
179
99943382 180 if (sset == ETH_SS_PHY_STATS && dev->phydev &&
17809516
FF		 181 !ops->get_ethtool_phy_stats &&
182 phy_ops && phy_ops->get_sset_count)
183 return phy_ops->get_sset_count(dev->phydev);
f3a40945 184
428c122f
MK		 185 if (sset == ETH_SS_LINK_MODES)
186 return __ETHTOOL_LINK_MODE_MASK_NBITS;
187
c03a14e8 188 if (ops->get_sset_count && ops->get_strings)
340ae165
MM		 189 return ops->get_sset_count(dev, sset);
190 else
191 return -EOPNOTSUPP;
192}
193
194static void __ethtool_get_strings(struct net_device *dev,
195 u32 stringset, u8 *data)
196{
17809516 197 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
340ae165
MM		 198 const struct ethtool_ops *ops = dev->ethtool_ops;
199
5455c699
MM		 200 if (stringset == ETH_SS_FEATURES)
201 memcpy(data, netdev_features_strings,
202 sizeof(netdev_features_strings));
892311f6
EP		 203 else if (stringset == ETH_SS_RSS_HASH_FUNCS)
204 memcpy(data, rss_hash_func_strings,
205 sizeof(rss_hash_func_strings));
a4244b0c
HHZ		 206 else if (stringset == ETH_SS_TUNABLES)
207 memcpy(data, tunable_strings, sizeof(tunable_strings));
968ad9da
RL		 208 else if (stringset == ETH_SS_PHY_TUNABLES)
209 memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings));
99943382 210 else if (stringset == ETH_SS_PHY_STATS && dev->phydev &&
17809516
FF		 211 !ops->get_ethtool_phy_stats && phy_ops &&
212 phy_ops->get_strings)
213 phy_ops->get_strings(dev->phydev, data);
428c122f
MK		 214 else if (stringset == ETH_SS_LINK_MODES)
215 memcpy(data, link_mode_names,
216 __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN);
99943382 217 else
5455c699
MM		 218 /* ops->get_strings is valid because checked earlier */
219 ops->get_strings(dev, stringset, data);
340ae165
MM		 220}
221
c8f44aff 222static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd)
0a417704
MM		 223{
224 /* feature masks of legacy discrete ethtool ops */
225
226 switch (eth_cmd) {
227 case ETHTOOL_GTXCSUM:
228 case ETHTOOL_STXCSUM:
9d648fb5 229 return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC |
f70bb065 230 NETIF_F_SCTP_CRC;
e83d360d
MM		 231 case ETHTOOL_GRXCSUM:
232 case ETHTOOL_SRXCSUM:
233 return NETIF_F_RXCSUM;
0a417704
MM		 234 case ETHTOOL_GSG:
235 case ETHTOOL_SSG:
f70bb065 236 return NETIF_F_SG | NETIF_F_FRAGLIST;
0a417704
MM		 237 case ETHTOOL_GTSO:
238 case ETHTOOL_STSO:
239 return NETIF_F_ALL_TSO;
0a417704
MM		 240 case ETHTOOL_GGSO:
241 case ETHTOOL_SGSO:
242 return NETIF_F_GSO;
243 case ETHTOOL_GGRO:
244 case ETHTOOL_SGRO:
245 return NETIF_F_GRO;
246 default:
247 BUG();
248 }
249}
250
0a417704
MM		 251static int ethtool_get_one_feature(struct net_device *dev,
252 char __user *useraddr, u32 ethcmd)
253{
c8f44aff 254 netdev_features_t mask = ethtool_get_feature_mask(ethcmd);
0a417704
MM		 255 struct ethtool_value edata = {
256 .cmd = ethcmd,
86794881 257 .data = !!(dev->features & mask),
0a417704 258 };
0a417704 259
0a417704
MM		 260 if (copy_to_user(useraddr, &edata, sizeof(edata)))
261 return -EFAULT;
262 return 0;
263}
264
0a417704
MM		 265static int ethtool_set_one_feature(struct net_device *dev,
266 void __user *useraddr, u32 ethcmd)
267{
268 struct ethtool_value edata;
c8f44aff 269 netdev_features_t mask;
0a417704
MM		 270
271 if (copy_from_user(&edata, useraddr, sizeof(edata)))
272 return -EFAULT;
273
86794881
MM		 274 mask = ethtool_get_feature_mask(ethcmd);
275 mask &= dev->hw_features;
bc5787c6
MM		 276 if (!mask)
277 return -EOPNOTSUPP;
86794881 278
bc5787c6
MM		 279 if (edata.data)
280 dev->wanted_features |= mask;
281 else
282 dev->wanted_features &= ~mask;
86794881 283
bc5787c6 284 __netdev_update_features(dev);
86794881 285
bc5787c6
MM		 286 return 0;
287}
288
02b3a552
MM		 289#define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \
290 ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH)
f646968f
PM		 291#define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \
292 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \
293 NETIF_F_RXHASH)
bc5787c6
MM		 294
295static u32 __ethtool_get_flags(struct net_device *dev)
296{
02b3a552
MM		 297 u32 flags = 0;
298
8a73125c
DF		 299 if (dev->features & NETIF_F_LRO)
300 flags |= ETH_FLAG_LRO;
301 if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
302 flags |= ETH_FLAG_RXVLAN;
303 if (dev->features & NETIF_F_HW_VLAN_CTAG_TX)
304 flags |= ETH_FLAG_TXVLAN;
305 if (dev->features & NETIF_F_NTUPLE)
306 flags |= ETH_FLAG_NTUPLE;
307 if (dev->features & NETIF_F_RXHASH)
308 flags |= ETH_FLAG_RXHASH;
02b3a552
MM		 309
310 return flags;
0a417704
MM		 311}
312
bc5787c6 313static int __ethtool_set_flags(struct net_device *dev, u32 data)
da8ac86c 314{
c8f44aff 315 netdev_features_t features = 0, changed;
da8ac86c 316
02b3a552 317 if (data & ~ETH_ALL_FLAGS)
da8ac86c
MM		 318 return -EINVAL;
319
8a73125c
DF		 320 if (data & ETH_FLAG_LRO)
321 features |= NETIF_F_LRO;
322 if (data & ETH_FLAG_RXVLAN)
323 features |= NETIF_F_HW_VLAN_CTAG_RX;
324 if (data & ETH_FLAG_TXVLAN)
325 features |= NETIF_F_HW_VLAN_CTAG_TX;
326 if (data & ETH_FLAG_NTUPLE)
327 features |= NETIF_F_NTUPLE;
328 if (data & ETH_FLAG_RXHASH)
329 features |= NETIF_F_RXHASH;
02b3a552 330
da8ac86c 331 /* allow changing only bits set in hw_features */
02b3a552 332 changed = (features ^ dev->features) & ETH_ALL_FEATURES;
da8ac86c
MM		 333 if (changed & ~dev->hw_features)
334 return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP;
335
336 dev->wanted_features =
02b3a552 337 (dev->wanted_features & ~changed) | (features & changed);
da8ac86c 338
6cb6a27c 339 __netdev_update_features(dev);
da8ac86c
MM		 340
341 return 0;
342}
343
5a6cd6de
AB		 344/* Given two link masks, AND them together and save the result in dst. */
345void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst,
346 struct ethtool_link_ksettings *src)
347{
348 unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS);
349 unsigned int idx = 0;
350
351 for (; idx < size; idx++) {
352 dst->link_modes.supported[idx] &=
353 src->link_modes.supported[idx];
354 dst->link_modes.advertising[idx] &=
355 src->link_modes.advertising[idx];
356 }
357}
358EXPORT_SYMBOL(ethtool_intersect_link_masks);
359
6d62b4d5
PR		 360void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst,
361 u32 legacy_u32)
3f1ac7a7 362{
4973056c 363 linkmode_zero(dst);
3f1ac7a7
DD		 364 dst[0] = legacy_u32;
365}
6d62b4d5 366EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode);
3f1ac7a7
DD		 367
368/* return false if src had higher bits set. lower bits always updated. */
6d62b4d5
PR		 369bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
370 const unsigned long *src)
3f1ac7a7 371{
3f1ac7a7 372 *legacy_u32 = src[0];
19d62f5e
MB		 373 return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) ==
374 __ETHTOOL_LINK_MODE_MASK_NBITS;
3f1ac7a7 375}
6d62b4d5 376EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32);
3f1ac7a7 377
3f1ac7a7
DD		 378/* return false if ksettings link modes had higher bits
379 * set. legacy_settings always updated (best effort)
380 */
381static bool
382convert_link_ksettings_to_legacy_settings(
383 struct ethtool_cmd *legacy_settings,
384 const struct ethtool_link_ksettings *link_ksettings)
385{
386 bool retval = true;
387
388 memset(legacy_settings, 0, sizeof(*legacy_settings));
389 /* this also clears the deprecated fields in legacy structure:
390 * __u8 transceiver;
391 * __u32 maxtxpkt;
392 * __u32 maxrxpkt;
393 */
394
6d62b4d5 395 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 396 &legacy_settings->supported,
397 link_ksettings->link_modes.supported);
6d62b4d5 398 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 399 &legacy_settings->advertising,
400 link_ksettings->link_modes.advertising);
6d62b4d5 401 retval &= ethtool_convert_link_mode_to_legacy_u32(
3f1ac7a7
DD		 402 &legacy_settings->lp_advertising,
403 link_ksettings->link_modes.lp_advertising);
404 ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed);
405 legacy_settings->duplex
406 = link_ksettings->base.duplex;
407 legacy_settings->port
408 = link_ksettings->base.port;
409 legacy_settings->phy_address
410 = link_ksettings->base.phy_address;
411 legacy_settings->autoneg
412 = link_ksettings->base.autoneg;
413 legacy_settings->mdio_support
414 = link_ksettings->base.mdio_support;
415 legacy_settings->eth_tp_mdix
416 = link_ksettings->base.eth_tp_mdix;
417 legacy_settings->eth_tp_mdix_ctrl
418 = link_ksettings->base.eth_tp_mdix_ctrl;
19cab887
FF		 419 legacy_settings->transceiver
420 = link_ksettings->base.transceiver;
3f1ac7a7
DD		 421 return retval;
422}
423
424/* number of 32-bit words to store the user's link mode bitmaps */
425#define __ETHTOOL_LINK_MODE_MASK_NU32 \
426 DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32)
427
428/* layout of the struct passed from/to userland */
429struct ethtool_link_usettings {
430 struct ethtool_link_settings base;
431 struct {
432 __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32];
433 __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
434 __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32];
435 } link_modes;
436};
437
9b300495 438/* Internal kernel helper to query a device ethtool_link_settings. */
3f1ac7a7
DD		 439int __ethtool_get_link_ksettings(struct net_device *dev,
440 struct ethtool_link_ksettings *link_ksettings)
441{
3f1ac7a7
DD		 442 ASSERT_RTNL();
443
9b300495 444 if (!dev->ethtool_ops->get_link_ksettings)
3237fc63
DD		 445 return -EOPNOTSUPP;
446
9b300495 447 memset(link_ksettings, 0, sizeof(*link_ksettings));
a975d7d8 448 return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings);
3f1ac7a7
DD		 449}
450EXPORT_SYMBOL(__ethtool_get_link_ksettings);
451
452/* convert ethtool_link_usettings in user space to a kernel internal
453 * ethtool_link_ksettings. return 0 on success, errno on error.
454 */
455static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to,
456 const void __user *from)
457{
458 struct ethtool_link_usettings link_usettings;
459
460 if (copy_from_user(&link_usettings, from, sizeof(link_usettings)))
461 return -EFAULT;
462
463 memcpy(&to->base, &link_usettings.base, sizeof(to->base));
3aa56885
YN		 464 bitmap_from_arr32(to->link_modes.supported,
465 link_usettings.link_modes.supported,
466 __ETHTOOL_LINK_MODE_MASK_NBITS);
467 bitmap_from_arr32(to->link_modes.advertising,
468 link_usettings.link_modes.advertising,
469 __ETHTOOL_LINK_MODE_MASK_NBITS);
470 bitmap_from_arr32(to->link_modes.lp_advertising,
471 link_usettings.link_modes.lp_advertising,
472 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 473
474 return 0;
475}
476
70ae1e12
CF		 477/* Check if the user is trying to change anything besides speed/duplex */
478bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd)
479{
480 struct ethtool_link_settings base2 = {};
481
482 base2.speed = cmd->base.speed;
483 base2.port = PORT_OTHER;
484 base2.duplex = cmd->base.duplex;
485 base2.cmd = cmd->base.cmd;
486 base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords;
487
488 return !memcmp(&base2, &cmd->base, sizeof(base2)) &&
489 bitmap_empty(cmd->link_modes.supported,
490 __ETHTOOL_LINK_MODE_MASK_NBITS) &&
491 bitmap_empty(cmd->link_modes.lp_advertising,
492 __ETHTOOL_LINK_MODE_MASK_NBITS);
493}
494
3f1ac7a7
DD		 495/* convert a kernel internal ethtool_link_ksettings to
496 * ethtool_link_usettings in user space. return 0 on success, errno on
497 * error.
498 */
499static int
500store_link_ksettings_for_user(void __user *to,
501 const struct ethtool_link_ksettings *from)
502{
503 struct ethtool_link_usettings link_usettings;
504
c1d9e34e 505 memcpy(&link_usettings, from, sizeof(link_usettings));
3aa56885
YN		 506 bitmap_to_arr32(link_usettings.link_modes.supported,
507 from->link_modes.supported,
508 __ETHTOOL_LINK_MODE_MASK_NBITS);
509 bitmap_to_arr32(link_usettings.link_modes.advertising,
510 from->link_modes.advertising,
511 __ETHTOOL_LINK_MODE_MASK_NBITS);
512 bitmap_to_arr32(link_usettings.link_modes.lp_advertising,
513 from->link_modes.lp_advertising,
514 __ETHTOOL_LINK_MODE_MASK_NBITS);
3f1ac7a7
DD		 515
516 if (copy_to_user(to, &link_usettings, sizeof(link_usettings)))
517 return -EFAULT;
518
519 return 0;
520}
521
9b300495 522/* Query device for its ethtool_link_settings. */
3f1ac7a7
DD		 523static int ethtool_get_link_ksettings(struct net_device *dev,
524 void __user *useraddr)
525{
526 int err = 0;
527 struct ethtool_link_ksettings link_ksettings;
528
529 ASSERT_RTNL();
3f1ac7a7
DD		 530 if (!dev->ethtool_ops->get_link_ksettings)
531 return -EOPNOTSUPP;
532
533 /* handle bitmap nbits handshake */
534 if (copy_from_user(&link_ksettings.base, useraddr,
535 sizeof(link_ksettings.base)))
536 return -EFAULT;
537
538 if (__ETHTOOL_LINK_MODE_MASK_NU32
539 != link_ksettings.base.link_mode_masks_nwords) {
540 /* wrong link mode nbits requested */
541 memset(&link_ksettings, 0, sizeof(link_ksettings));
793cf87d 542 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
3f1ac7a7
DD		 543 /* send back number of words required as negative val */
544 compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX,
545 "need too many bits for link modes!");
546 link_ksettings.base.link_mode_masks_nwords
547 = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32);
548
549 /* copy the base fields back to user, not the link
550 * mode bitmaps
551 */
552 if (copy_to_user(useraddr, &link_ksettings.base,
553 sizeof(link_ksettings.base)))
554 return -EFAULT;
555
556 return 0;
557 }
558
559 /* handshake successful: user/kernel agree on
560 * link_mode_masks_nwords
561 */
562
563 memset(&link_ksettings, 0, sizeof(link_ksettings));
564 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
565 if (err < 0)
566 return err;
567
568 /* make sure we tell the right values to user */
569 link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS;
570 link_ksettings.base.link_mode_masks_nwords
571 = __ETHTOOL_LINK_MODE_MASK_NU32;
bdbdac76
OR		 572 link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED;
573 link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED;
3f1ac7a7
DD		 574
575 return store_link_ksettings_for_user(useraddr, &link_ksettings);
576}
577
9b300495 578/* Update device ethtool_link_settings. */
3f1ac7a7
DD		 579static int ethtool_set_link_ksettings(struct net_device *dev,
580 void __user *useraddr)
581{
582 int err;
583 struct ethtool_link_ksettings link_ksettings;
584
585 ASSERT_RTNL();
586
587 if (!dev->ethtool_ops->set_link_ksettings)
588 return -EOPNOTSUPP;
589
590 /* make sure nbits field has expected value */
591 if (copy_from_user(&link_ksettings.base, useraddr,
592 sizeof(link_ksettings.base)))
593 return -EFAULT;
594
595 if (__ETHTOOL_LINK_MODE_MASK_NU32
596 != link_ksettings.base.link_mode_masks_nwords)
597 return -EINVAL;
598
599 /* copy the whole structure, now that we know it has expected
600 * format
601 */
602 err = load_link_ksettings_from_user(&link_ksettings, useraddr);
603 if (err)
604 return err;
605
606 /* re-check nwords field, just in case */
607 if (__ETHTOOL_LINK_MODE_MASK_NU32
608 != link_ksettings.base.link_mode_masks_nwords)
609 return -EINVAL;
610
bdbdac76
OR		 611 if (link_ksettings.base.master_slave_cfg ||
612 link_ksettings.base.master_slave_state)
613 return -EINVAL;
614
73286734 615 err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
1b1b1847 616 if (err >= 0) {
73286734 617 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
1b1b1847
MK		 618 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
619 }
73286734 620 return err;
3f1ac7a7
DD		 621}
622
70ae1e12
CF		 623int ethtool_virtdev_set_link_ksettings(struct net_device *dev,
624 const struct ethtool_link_ksettings *cmd,
625 u32 *dev_speed, u8 *dev_duplex)
626{
627 u32 speed;
628 u8 duplex;
629
630 speed = cmd->base.speed;
631 duplex = cmd->base.duplex;
632 /* don't allow custom speed and duplex */
633 if (!ethtool_validate_speed(speed) ||
634 !ethtool_validate_duplex(duplex) ||
635 !ethtool_virtdev_validate_cmd(cmd))
636 return -EINVAL;
637 *dev_speed = speed;
638 *dev_duplex = duplex;
639
640 return 0;
641}
642EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings);
643
3f1ac7a7
DD		 644/* Query device for its ethtool_cmd settings.
645 *
9b300495
MK		 646 * Backward compatibility note: for compatibility with legacy ethtool, this is
647 * now implemented via get_link_ksettings. When driver reports higher link mode
648 * bits, a kernel warning is logged once (with name of 1st driver/device) to
649 * recommend user to upgrade ethtool, but the command is successful (only the
650 * lower link mode bits reported back to user). Deprecated fields from
651 * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero.
3f1ac7a7 652 */
4bc71cb9
JP		 653static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
654{
9b300495 655 struct ethtool_link_ksettings link_ksettings;
4bc71cb9 656 struct ethtool_cmd cmd;
9b300495 657 int err;
4bc71cb9 658
3f1ac7a7 659 ASSERT_RTNL();
9b300495
MK		 660 if (!dev->ethtool_ops->get_link_ksettings)
661 return -EOPNOTSUPP;
3f1ac7a7 662
9b300495
MK		 663 memset(&link_ksettings, 0, sizeof(link_ksettings));
664 err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings);
665 if (err < 0)
666 return err;
667 convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings);
3237fc63 668
9b300495
MK		 669 /* send a sensible cmd tag back to user */
670 cmd.cmd = ETHTOOL_GSET;
1da177e4
LT		 671
672 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
673 return -EFAULT;
3f1ac7a7 674
1da177e4
LT		 675 return 0;
676}
677
3f1ac7a7
DD		 678/* Update device link settings with given ethtool_cmd.
679 *
9b300495
MK		 680 * Backward compatibility note: for compatibility with legacy ethtool, this is
681 * now always implemented via set_link_settings. When user's request updates
682 * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel
683 * warning is logged once (with name of 1st driver/device) to recommend user to
684 * upgrade ethtool, and the request is rejected.
3f1ac7a7 685 */
1da177e4
LT		 686static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
687{
9b300495 688 struct ethtool_link_ksettings link_ksettings;
1da177e4 689 struct ethtool_cmd cmd;
73286734 690 int ret;
1da177e4 691
3f1ac7a7 692 ASSERT_RTNL();
1da177e4
LT		 693
694 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
695 return -EFAULT;
9b300495 696 if (!dev->ethtool_ops->set_link_ksettings)
3f1ac7a7
DD		 697 return -EOPNOTSUPP;
698
9b300495
MK		 699 if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd))
700 return -EINVAL;
701 link_ksettings.base.link_mode_masks_nwords =
702 __ETHTOOL_LINK_MODE_MASK_NU32;
73286734 703 ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings);
1b1b1847 704 if (ret >= 0) {
73286734 705 ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL);
1b1b1847
MK		 706 ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
707 }
73286734 708 return ret;
1da177e4
LT		 709}
710
095cfcfe
JK		 711static int
712ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp)
1da177e4 713{
76fd8593 714 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 715
095cfcfe
JK		 716 rsp->info.cmd = ETHTOOL_GDRVINFO;
717 strlcpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version));
c03a14e8 718 if (ops->get_drvinfo) {
095cfcfe 719 ops->get_drvinfo(dev, &rsp->info);
01414802 720 } else if (dev->dev.parent && dev->dev.parent->driver) {
095cfcfe
JK		 721 strlcpy(rsp->info.bus_info, dev_name(dev->dev.parent),
722 sizeof(rsp->info.bus_info));
723 strlcpy(rsp->info.driver, dev->dev.parent->driver->name,
724 sizeof(rsp->info.driver));
bde3b0fd
TZ		 725 } else if (dev->rtnl_link_ops) {
726 strlcpy(rsp->info.driver, dev->rtnl_link_ops->kind,
727 sizeof(rsp->info.driver));
01414802
BH		 728 } else {
729 return -EOPNOTSUPP;
730 }
1da177e4 731
723b2f57
JG		 732 /*
733 * this method of obtaining string set info is deprecated;
d17792eb 734 * Use ETHTOOL_GSSET_INFO instead.
723b2f57 735 */
c03a14e8 736 if (ops->get_sset_count) {
ff03d49f
JG		 737 int rc;
738
739 rc = ops->get_sset_count(dev, ETH_SS_TEST);
740 if (rc >= 0)
095cfcfe 741 rsp->info.testinfo_len = rc;
ff03d49f
JG		 742 rc = ops->get_sset_count(dev, ETH_SS_STATS);
743 if (rc >= 0)
095cfcfe 744 rsp->info.n_stats = rc;
339bf024
JG		 745 rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS);
746 if (rc >= 0)
095cfcfe 747 rsp->info.n_priv_flags = rc;
ff03d49f 748 }
f9fc54d3
YL		 749 if (ops->get_regs_len) {
750 int ret = ops->get_regs_len(dev);
751
752 if (ret > 0)
095cfcfe 753 rsp->info.regdump_len = ret;
f9fc54d3
YL		 754 }
755
c03a14e8 756 if (ops->get_eeprom_len)
095cfcfe 757 rsp->info.eedump_len = ops->get_eeprom_len(dev);
ddb6e99e 758
095cfcfe 759 if (!rsp->info.fw_version[0])
1af0a094
JK		 760 rsp->devlink = netdev_to_devlink_get(dev);
761
1da177e4
LT		 762 return 0;
763}
764
f5c445ed 765static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev,
97f8aefb 766 void __user *useraddr)
723b2f57
JG		 767{
768 struct ethtool_sset_info info;
723b2f57
JG		 769 u64 sset_mask;
770 int i, idx = 0, n_bits = 0, ret, rc;
771 u32 *info_buf = NULL;
772
723b2f57
JG		 773 if (copy_from_user(&info, useraddr, sizeof(info)))
774 return -EFAULT;
775
776 /* store copy of mask, because we zero struct later on */
777 sset_mask = info.sset_mask;
778 if (!sset_mask)
779 return 0;
780
781 /* calculate size of return buffer */
d17792eb 782 n_bits = hweight64(sset_mask);
723b2f57
JG		 783
784 memset(&info, 0, sizeof(info));
785 info.cmd = ETHTOOL_GSSET_INFO;
786
6396bb22 787 info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER);
723b2f57
JG		 788 if (!info_buf)
789 return -ENOMEM;
790
791 /*
792 * fill return buffer based on input bitmask and successful
793 * get_sset_count return
794 */
795 for (i = 0; i < 64; i++) {
796 if (!(sset_mask & (1ULL << i)))
797 continue;
798
340ae165 799 rc = __ethtool_get_sset_count(dev, i);
723b2f57
JG		 800 if (rc >= 0) {
801 info.sset_mask |= (1ULL << i);
802 info_buf[idx++] = rc;
803 }
804 }
805
806 ret = -EFAULT;
807 if (copy_to_user(useraddr, &info, sizeof(info)))
808 goto out;
809
810 useraddr += offsetof(struct ethtool_sset_info, data);
ed717613 811 if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32))))
723b2f57
JG		 812 goto out;
813
814 ret = 0;
815
816out:
817 kfree(info_buf);
818 return ret;
819}
820
dd98d289
AB		 821static noinline_for_stack int
822ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc,
823 const struct compat_ethtool_rxnfc __user *useraddr,
824 size_t size)
825{
826 struct compat_ethtool_rxnfc crxnfc = {};
827
828 /* We expect there to be holes between fs.m_ext and
829 * fs.ring_cookie and at the end of fs, but nowhere else.
830 * On non-x86, no conversion should be needed.
831 */
832 BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) &&
833 sizeof(struct compat_ethtool_rxnfc) !=
834 sizeof(struct ethtool_rxnfc));
835 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) +
836 sizeof(useraddr->fs.m_ext) !=
837 offsetof(struct ethtool_rxnfc, fs.m_ext) +
838 sizeof(rxnfc->fs.m_ext));
839 BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) -
840 offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) !=
841 offsetof(struct ethtool_rxnfc, fs.location) -
842 offsetof(struct ethtool_rxnfc, fs.ring_cookie));
843
844 if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc))))
845 return -EFAULT;
846
847 *rxnfc = (struct ethtool_rxnfc) {
848 .cmd = crxnfc.cmd,
849 .flow_type = crxnfc.flow_type,
850 .data = crxnfc.data,
851 .fs = {
852 .flow_type = crxnfc.fs.flow_type,
853 .h_u = crxnfc.fs.h_u,
854 .h_ext = crxnfc.fs.h_ext,
855 .m_u = crxnfc.fs.m_u,
856 .m_ext = crxnfc.fs.m_ext,
857 .ring_cookie = crxnfc.fs.ring_cookie,
858 .location = crxnfc.fs.location,
859 },
860 .rule_cnt = crxnfc.rule_cnt,
861 };
862
863 return 0;
864}
865
866static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc,
867 const void __user *useraddr,
868 size_t size)
869{
870 if (compat_need_64bit_alignment_fixup())
871 return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size);
872
873 if (copy_from_user(rxnfc, useraddr, size))
874 return -EFAULT;
875
876 return 0;
877}
878
879static int ethtool_rxnfc_copy_to_compat(void __user *useraddr,
880 const struct ethtool_rxnfc *rxnfc,
881 size_t size, const u32 *rule_buf)
882{
883 struct compat_ethtool_rxnfc crxnfc;
884
885 memset(&crxnfc, 0, sizeof(crxnfc));
886 crxnfc = (struct compat_ethtool_rxnfc) {
887 .cmd = rxnfc->cmd,
888 .flow_type = rxnfc->flow_type,
889 .data = rxnfc->data,
890 .fs = {
891 .flow_type = rxnfc->fs.flow_type,
892 .h_u = rxnfc->fs.h_u,
893 .h_ext = rxnfc->fs.h_ext,
894 .m_u = rxnfc->fs.m_u,
895 .m_ext = rxnfc->fs.m_ext,
896 .ring_cookie = rxnfc->fs.ring_cookie,
897 .location = rxnfc->fs.location,
898 },
899 .rule_cnt = rxnfc->rule_cnt,
900 };
901
902 if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc))))
903 return -EFAULT;
904
905 return 0;
906}
907
908static int ethtool_rxnfc_copy_to_user(void __user *useraddr,
909 const struct ethtool_rxnfc *rxnfc,
910 size_t size, const u32 *rule_buf)
911{
912 int ret;
913
914 if (compat_need_64bit_alignment_fixup()) {
915 ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size,
916 rule_buf);
917 useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs);
918 } else {
9b29a161 919 ret = copy_to_user(useraddr, rxnfc, size);
dd98d289
AB		 920 useraddr += offsetof(struct ethtool_rxnfc, rule_locs);
921 }
922
923 if (ret)
924 return -EFAULT;
925
926 if (rule_buf) {
927 if (copy_to_user(useraddr, rule_buf,
928 rxnfc->rule_cnt * sizeof(u32)))
929 return -EFAULT;
930 }
931
932 return 0;
933}
934
97f8aefb 935static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev,
bf988435 936 u32 cmd, void __user *useraddr)
0853ad66 937{
bf988435
BH		 938 struct ethtool_rxnfc info;
939 size_t info_size = sizeof(info);
55664f32 940 int rc;
0853ad66 941
59089d8d 942 if (!dev->ethtool_ops->set_rxnfc)
0853ad66
SB		 943 return -EOPNOTSUPP;
944
bf988435
BH		 945 /* struct ethtool_rxnfc was originally defined for
946 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
947 * members. User-space might still be using that
948 * definition. */
949 if (cmd == ETHTOOL_SRXFH)
950 info_size = (offsetof(struct ethtool_rxnfc, data) +
951 sizeof(info.data));
952
dd98d289 953 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 954 return -EFAULT;
955
55664f32
BH		 956 rc = dev->ethtool_ops->set_rxnfc(dev, &info);
957 if (rc)
958 return rc;
959
960 if (cmd == ETHTOOL_SRXCLSRLINS &&
dd98d289 961 ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL))
55664f32
BH		 962 return -EFAULT;
963
964 return 0;
0853ad66
SB		 965}
966
97f8aefb 967static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev,
bf988435 968 u32 cmd, void __user *useraddr)
0853ad66
SB		 969{
970 struct ethtool_rxnfc info;
bf988435 971 size_t info_size = sizeof(info);
59089d8d
SB		 972 const struct ethtool_ops *ops = dev->ethtool_ops;
973 int ret;
974 void *rule_buf = NULL;
0853ad66 975
59089d8d 976 if (!ops->get_rxnfc)
0853ad66
SB		 977 return -EOPNOTSUPP;
978
bf988435
BH		 979 /* struct ethtool_rxnfc was originally defined for
980 * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data
981 * members. User-space might still be using that
982 * definition. */
983 if (cmd == ETHTOOL_GRXFH)
984 info_size = (offsetof(struct ethtool_rxnfc, data) +
985 sizeof(info.data));
986
dd98d289 987 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size))
0853ad66
SB		 988 return -EFAULT;
989
84a1d9c4
EC		 990 /* If FLOW_RSS was requested then user-space must be using the
991 * new definition, as FLOW_RSS is newer.
992 */
993 if (cmd == ETHTOOL_GRXFH && info.flow_type & FLOW_RSS) {
994 info_size = sizeof(info);
dd98d289 995 if (ethtool_rxnfc_copy_from_user(&info, useraddr, info_size))
84a1d9c4 996 return -EFAULT;
d656fe49
WW		 997 /* Since malicious users may modify the original data,
998 * we need to check whether FLOW_RSS is still requested.
999 */
1000 if (!(info.flow_type & FLOW_RSS))
1001 return -EINVAL;
84a1d9c4
EC		 1002 }
1003
2bb3207d
WW		 1004 if (info.cmd != cmd)
1005 return -EINVAL;
1006
59089d8d
SB		 1007 if (info.cmd == ETHTOOL_GRXCLSRLALL) {
1008 if (info.rule_cnt > 0) {
db048b69 1009 if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32))
6396bb22 1010 rule_buf = kcalloc(info.rule_cnt, sizeof(u32),
db048b69 1011 GFP_USER);
59089d8d
SB		 1012 if (!rule_buf)
1013 return -ENOMEM;
1014 }
1015 }
0853ad66 1016
59089d8d
SB		 1017 ret = ops->get_rxnfc(dev, &info, rule_buf);
1018 if (ret < 0)
1019 goto err_out;
1020
dd98d289 1021 ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf);
59089d8d 1022err_out:
c9caceca 1023 kfree(rule_buf);
59089d8d
SB		 1024
1025 return ret;
0853ad66
SB		 1026}
1027
3de0b592
VD		 1028static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr,
1029 struct ethtool_rxnfc *rx_rings,
1030 u32 size)
1031{
fb95cd8d 1032 int i;
3de0b592 1033
ed717613 1034 if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0]))))
fb95cd8d 1035 return -EFAULT;
3de0b592
VD		 1036
1037 /* Validate ring indices */
fb95cd8d
BH		 1038 for (i = 0; i < size; i++)
1039 if (indir[i] >= rx_rings->data)
1040 return -EINVAL;
1041
1042 return 0;
3de0b592
VD		 1043}
1044
ba905f5e 1045u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly;
960fb622
ED		 1046
1047void netdev_rss_key_fill(void *buffer, size_t len)
1048{
1049 BUG_ON(len > sizeof(netdev_rss_key));
1050 net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key));
1051 memcpy(buffer, netdev_rss_key, len);
1052}
1053EXPORT_SYMBOL(netdev_rss_key_fill);
1054
a5b6ee29
BH		 1055static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev,
1056 void __user *useraddr)
1057{
7850f63f
BH		 1058 u32 user_size, dev_size;
1059 u32 *indir;
a5b6ee29
BH		 1060 int ret;
1061
7850f63f 1062 if (!dev->ethtool_ops->get_rxfh_indir_size ||
fe62d001 1063 !dev->ethtool_ops->get_rxfh)
7850f63f
BH		 1064 return -EOPNOTSUPP;
1065 dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev);
1066 if (dev_size == 0)
a5b6ee29
BH		 1067 return -EOPNOTSUPP;
1068
7850f63f 1069 if (copy_from_user(&user_size,
a5b6ee29 1070 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1071 sizeof(user_size)))
a5b6ee29
BH		 1072 return -EFAULT;
1073
7850f63f
BH		 1074 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size),
1075 &dev_size, sizeof(dev_size)))
1076 return -EFAULT;
1077
1078 /* If the user buffer size is 0, this is just a query for the
1079 * device table size. Otherwise, if it's smaller than the
1080 * device table size it's an error.
1081 */
1082 if (user_size < dev_size)
1083 return user_size == 0 ? 0 : -EINVAL;
1084
1085 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1086 if (!indir)
1087 return -ENOMEM;
1088
892311f6 1089 ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL);
a5b6ee29
BH		 1090 if (ret)
1091 goto out;
1092
7850f63f
BH		 1093 if (copy_to_user(useraddr +
1094 offsetof(struct ethtool_rxfh_indir, ring_index[0]),
1095 indir, dev_size * sizeof(indir[0])))
a5b6ee29
BH		 1096 ret = -EFAULT;
1097
1098out:
1099 kfree(indir);
1100 return ret;
1101}
1102
1103static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev,
1104 void __user *useraddr)
1105{
7850f63f
BH		 1106 struct ethtool_rxnfc rx_rings;
1107 u32 user_size, dev_size, i;
1108 u32 *indir;
c03a14e8 1109 const struct ethtool_ops *ops = dev->ethtool_ops;
a5b6ee29 1110 int ret;
3de0b592 1111 u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]);
a5b6ee29 1112
fe62d001 1113 if (!ops->get_rxfh_indir_size || !ops->set_rxfh ||
c03a14e8 1114 !ops->get_rxnfc)
7850f63f 1115 return -EOPNOTSUPP;
c03a14e8
JP		 1116
1117 dev_size = ops->get_rxfh_indir_size(dev);
7850f63f 1118 if (dev_size == 0)
a5b6ee29
BH		 1119 return -EOPNOTSUPP;
1120
7850f63f 1121 if (copy_from_user(&user_size,
a5b6ee29 1122 useraddr + offsetof(struct ethtool_rxfh_indir, size),
7850f63f 1123 sizeof(user_size)))
a5b6ee29
BH		 1124 return -EFAULT;
1125
278bc429 1126 if (user_size != 0 && user_size != dev_size)
7850f63f
BH		 1127 return -EINVAL;
1128
1129 indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER);
a5b6ee29
BH		 1130 if (!indir)
1131 return -ENOMEM;
1132
7850f63f 1133 rx_rings.cmd = ETHTOOL_GRXRINGS;
c03a14e8 1134 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
7850f63f
BH		 1135 if (ret)
1136 goto out;
278bc429
BH		 1137
1138 if (user_size == 0) {
1139 for (i = 0; i < dev_size; i++)
1140 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1141 } else {
3de0b592
VD		 1142 ret = ethtool_copy_validate_indir(indir,
1143 useraddr + ringidx_offset,
1144 &rx_rings,
1145 dev_size);
1146 if (ret)
1147 goto out;
1148 }
1149
892311f6 1150 ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE);
d4ab4286
KJ		 1151 if (ret)
1152 goto out;
1153
1154 /* indicate whether rxfh was set to default */
1155 if (user_size == 0)
1156 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1157 else
1158 dev->priv_flags |= IFF_RXFH_CONFIGURED;
3de0b592
VD		 1159
1160out:
1161 kfree(indir);
1162 return ret;
1163}
1164
1165static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev,
1166 void __user *useraddr)
1167{
1168 int ret;
1169 const struct ethtool_ops *ops = dev->ethtool_ops;
f062a384 1170 u32 user_indir_size, user_key_size;
3de0b592 1171 u32 dev_indir_size = 0, dev_key_size = 0;
f062a384 1172 struct ethtool_rxfh rxfh;
3de0b592 1173 u32 total_size;
f062a384 1174 u32 indir_bytes;
3de0b592 1175 u32 *indir = NULL;
892311f6 1176 u8 dev_hfunc = 0;
3de0b592
VD		 1177 u8 *hkey = NULL;
1178 u8 *rss_config;
1179
892311f6 1180 if (!ops->get_rxfh)
3de0b592
VD		 1181 return -EOPNOTSUPP;
1182
1183 if (ops->get_rxfh_indir_size)
1184 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592
VD		 1185 if (ops->get_rxfh_key_size)
1186 dev_key_size = ops->get_rxfh_key_size(dev);
1187
f062a384 1188 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592 1189 return -EFAULT;
f062a384
BH		 1190 user_indir_size = rxfh.indir_size;
1191 user_key_size = rxfh.key_size;
3de0b592 1192
f062a384 1193 /* Check that reserved fields are 0 for now */
84a1d9c4 1194 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1195 return -EINVAL;
84a1d9c4
EC		 1196 /* Most drivers don't handle rss_context, check it's 0 as well */
1197 if (rxfh.rss_context && !ops->get_rxfh_context)
1198 return -EOPNOTSUPP;
f062a384
BH		 1199
1200 rxfh.indir_size = dev_indir_size;
1201 rxfh.key_size = dev_key_size;
1202 if (copy_to_user(useraddr, &rxfh, sizeof(rxfh)))
3de0b592
VD		 1203 return -EFAULT;
1204
3de0b592
VD		 1205 if ((user_indir_size && (user_indir_size != dev_indir_size)) ||
1206 (user_key_size && (user_key_size != dev_key_size)))
1207 return -EINVAL;
1208
1209 indir_bytes = user_indir_size * sizeof(indir[0]);
1210 total_size = indir_bytes + user_key_size;
1211 rss_config = kzalloc(total_size, GFP_USER);
1212 if (!rss_config)
1213 return -ENOMEM;
1214
1215 if (user_indir_size)
1216 indir = (u32 *)rss_config;
1217
1218 if (user_key_size)
1219 hkey = rss_config + indir_bytes;
1220
84a1d9c4
EC		 1221 if (rxfh.rss_context)
1222 ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey,
1223 &dev_hfunc,
1224 rxfh.rss_context);
1225 else
1226 ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc);
892311f6
EP		 1227 if (ret)
1228 goto out;
3de0b592 1229
892311f6
EP		 1230 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc),
1231 &dev_hfunc, sizeof(rxfh.hfunc))) {
1232 ret = -EFAULT;
1233 } else if (copy_to_user(useraddr +
1234 offsetof(struct ethtool_rxfh, rss_config[0]),
1235 rss_config, total_size)) {
1236 ret = -EFAULT;
1237 }
1238out:
3de0b592
VD		 1239 kfree(rss_config);
1240
1241 return ret;
1242}
1243
1244static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev,
1245 void __user *useraddr)
1246{
1247 int ret;
1248 const struct ethtool_ops *ops = dev->ethtool_ops;
1249 struct ethtool_rxnfc rx_rings;
f062a384
BH		 1250 struct ethtool_rxfh rxfh;
1251 u32 dev_indir_size = 0, dev_key_size = 0, i;
3de0b592
VD		 1252 u32 *indir = NULL, indir_bytes = 0;
1253 u8 *hkey = NULL;
1254 u8 *rss_config;
3de0b592 1255 u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]);
84a1d9c4 1256 bool delete = false;
3de0b592 1257
892311f6 1258 if (!ops->get_rxnfc || !ops->set_rxfh)
3de0b592
VD		 1259 return -EOPNOTSUPP;
1260
1261 if (ops->get_rxfh_indir_size)
1262 dev_indir_size = ops->get_rxfh_indir_size(dev);
3de0b592 1263 if (ops->get_rxfh_key_size)
d340c862 1264 dev_key_size = ops->get_rxfh_key_size(dev);
3de0b592 1265
f062a384 1266 if (copy_from_user(&rxfh, useraddr, sizeof(rxfh)))
3de0b592
VD		 1267 return -EFAULT;
1268
f062a384 1269 /* Check that reserved fields are 0 for now */
84a1d9c4 1270 if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32)
f062a384 1271 return -EINVAL;
84a1d9c4
EC		 1272 /* Most drivers don't handle rss_context, check it's 0 as well */
1273 if (rxfh.rss_context && !ops->set_rxfh_context)
1274 return -EOPNOTSUPP;
f062a384 1275
892311f6
EP		 1276 /* If either indir, hash key or function is valid, proceed further.
1277 * Must request at least one change: indir size, hash key or function.
3de0b592 1278 */
f062a384
BH		 1279 if ((rxfh.indir_size &&
1280 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE &&
1281 rxfh.indir_size != dev_indir_size) ||
1282 (rxfh.key_size && (rxfh.key_size != dev_key_size)) ||
1283 (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE &&
892311f6 1284 rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE))
3de0b592
VD		 1285 return -EINVAL;
1286
f062a384 1287 if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
3de0b592
VD		 1288 indir_bytes = dev_indir_size * sizeof(indir[0]);
1289
f062a384 1290 rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER);
3de0b592
VD		 1291 if (!rss_config)
1292 return -ENOMEM;
1293
1294 rx_rings.cmd = ETHTOOL_GRXRINGS;
1295 ret = ops->get_rxnfc(dev, &rx_rings, NULL);
1296 if (ret)
1297 goto out;
1298
84a1d9c4
EC		 1299 /* rxfh.indir_size == 0 means reset the indir table to default (master
1300 * context) or delete the context (other RSS contexts).
f062a384 1301 * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged.
3de0b592 1302 */
f062a384
BH		 1303 if (rxfh.indir_size &&
1304 rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) {
3de0b592
VD		 1305 indir = (u32 *)rss_config;
1306 ret = ethtool_copy_validate_indir(indir,
1307 useraddr + rss_cfg_offset,
1308 &rx_rings,
f062a384 1309 rxfh.indir_size);
3de0b592 1310 if (ret)
7850f63f 1311 goto out;
f062a384 1312 } else if (rxfh.indir_size == 0) {
84a1d9c4
EC		 1313 if (rxfh.rss_context == 0) {
1314 indir = (u32 *)rss_config;
1315 for (i = 0; i < dev_indir_size; i++)
1316 indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data);
1317 } else {
1318 delete = true;
1319 }
3de0b592 1320 }
278bc429 1321
f062a384 1322 if (rxfh.key_size) {
3de0b592
VD		 1323 hkey = rss_config + indir_bytes;
1324 if (copy_from_user(hkey,
1325 useraddr + rss_cfg_offset + indir_bytes,
f062a384 1326 rxfh.key_size)) {
3de0b592
VD		 1327 ret = -EFAULT;
1328 goto out;
278bc429 1329 }
7850f63f
BH		 1330 }
1331
84a1d9c4
EC		 1332 if (rxfh.rss_context)
1333 ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc,
1334 &rxfh.rss_context, delete);
1335 else
1336 ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc);
d4ab4286
KJ		 1337 if (ret)
1338 goto out;
1339
84a1d9c4
EC		 1340 if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context),
1341 &rxfh.rss_context, sizeof(rxfh.rss_context)))
1342 ret = -EFAULT;
1343
1344 if (!rxfh.rss_context) {
1345 /* indicate whether rxfh was set to default */
1346 if (rxfh.indir_size == 0)
1347 dev->priv_flags &= ~IFF_RXFH_CONFIGURED;
1348 else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE)
1349 dev->priv_flags |= IFF_RXFH_CONFIGURED;
1350 }
a5b6ee29
BH		 1351
1352out:
3de0b592 1353 kfree(rss_config);
a5b6ee29
BH		 1354 return ret;
1355}
1356
1da177e4
LT		 1357static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
1358{
1359 struct ethtool_regs regs;
76fd8593 1360 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4
LT		 1361 void *regbuf;
1362 int reglen, ret;
1363
1364 if (!ops->get_regs || !ops->get_regs_len)
1365 return -EOPNOTSUPP;
1366
1367 if (copy_from_user(&regs, useraddr, sizeof(regs)))
1368 return -EFAULT;
1369
1370 reglen = ops->get_regs_len(dev);
f9fc54d3
YL		 1371 if (reglen <= 0)
1372 return reglen;
1373
1da177e4
LT		 1374 if (regs.len > reglen)
1375 regs.len = reglen;
1376
ef76c77a
DC		 1377 regbuf = vzalloc(reglen);
1378 if (!regbuf)
1379 return -ENOMEM;
1da177e4 1380
0ee4e769
VD		 1381 if (regs.len < reglen)
1382 reglen = regs.len;
1383
1da177e4
LT		 1384 ops->get_regs(dev, &regs, regbuf);
1385
1386 ret = -EFAULT;
1387 if (copy_to_user(useraddr, &regs, sizeof(regs)))
1388 goto out;
1389 useraddr += offsetof(struct ethtool_regs, data);
0ee4e769 1390 if (copy_to_user(useraddr, regbuf, reglen))
1da177e4
LT		 1391 goto out;
1392 ret = 0;
1393
1394 out:
a77f5db3 1395 vfree(regbuf);
1da177e4
LT		 1396 return ret;
1397}
1398
d73d3a8c
BH		 1399static int ethtool_reset(struct net_device *dev, char __user *useraddr)
1400{
1401 struct ethtool_value reset;
1402 int ret;
1403
1404 if (!dev->ethtool_ops->reset)
1405 return -EOPNOTSUPP;
1406
1407 if (copy_from_user(&reset, useraddr, sizeof(reset)))
1408 return -EFAULT;
1409
1410 ret = dev->ethtool_ops->reset(dev, &reset.data);
1411 if (ret)
1412 return ret;
1413
1414 if (copy_to_user(useraddr, &reset, sizeof(reset)))
1415 return -EFAULT;
1416 return 0;
1417}
1418
1da177e4
LT		 1419static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
1420{
5ff223e8 1421 struct ethtool_wolinfo wol;
1da177e4
LT		 1422
1423 if (!dev->ethtool_ops->get_wol)
1424 return -EOPNOTSUPP;
1425
5ff223e8 1426 memset(&wol, 0, sizeof(struct ethtool_wolinfo));
1427 wol.cmd = ETHTOOL_GWOL;
1da177e4
LT		 1428 dev->ethtool_ops->get_wol(dev, &wol);
1429
1430 if (copy_to_user(useraddr, &wol, sizeof(wol)))
1431 return -EFAULT;
1432 return 0;
1433}
1434
1435static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
1436{
1437 struct ethtool_wolinfo wol;
61941143 1438 int ret;
1da177e4
LT		 1439
1440 if (!dev->ethtool_ops->set_wol)
1441 return -EOPNOTSUPP;
1442
1443 if (copy_from_user(&wol, useraddr, sizeof(wol)))
1444 return -EFAULT;
1445
61941143
HK		 1446 ret = dev->ethtool_ops->set_wol(dev, &wol);
1447 if (ret)
1448 return ret;
1449
1450 dev->wol_enabled = !!wol.wolopts;
67bffa79 1451 ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL);
61941143
HK		 1452
1453 return 0;
1da177e4
LT		 1454}
1455
80f12ecc
YM		 1456static int ethtool_get_eee(struct net_device *dev, char __user *useraddr)
1457{
1458 struct ethtool_eee edata;
1459 int rc;
1460
1461 if (!dev->ethtool_ops->get_eee)
1462 return -EOPNOTSUPP;
1463
1464 memset(&edata, 0, sizeof(struct ethtool_eee));
1465 edata.cmd = ETHTOOL_GEEE;
1466 rc = dev->ethtool_ops->get_eee(dev, &edata);
1467
1468 if (rc)
1469 return rc;
1470
1471 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1472 return -EFAULT;
1473
1474 return 0;
1475}
1476
1477static int ethtool_set_eee(struct net_device *dev, char __user *useraddr)
1478{
1479 struct ethtool_eee edata;
6c5bc8fe 1480 int ret;
80f12ecc
YM		 1481
1482 if (!dev->ethtool_ops->set_eee)
1483 return -EOPNOTSUPP;
1484
1485 if (copy_from_user(&edata, useraddr, sizeof(edata)))
1486 return -EFAULT;
1487
6c5bc8fe
MK		 1488 ret = dev->ethtool_ops->set_eee(dev, &edata);
1489 if (!ret)
1490 ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL);
1491 return ret;
80f12ecc
YM		 1492}
1493
1da177e4
LT		 1494static int ethtool_nway_reset(struct net_device *dev)
1495{
1496 if (!dev->ethtool_ops->nway_reset)
1497 return -EOPNOTSUPP;
1498
1499 return dev->ethtool_ops->nway_reset(dev);
1500}
1501
e596e6e4
BH		 1502static int ethtool_get_link(struct net_device *dev, char __user *useraddr)
1503{
1504 struct ethtool_value edata = { .cmd = ETHTOOL_GLINK };
3d2b847f 1505 int link = __ethtool_get_link(dev);
e596e6e4 1506
3d2b847f
MK		 1507 if (link < 0)
1508 return link;
e596e6e4 1509
3d2b847f 1510 edata.data = link;
e596e6e4
BH		 1511 if (copy_to_user(useraddr, &edata, sizeof(edata)))
1512 return -EFAULT;
1513 return 0;
1514}
1515
081d094e
BH		 1516static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr,
1517 int (*getter)(struct net_device *,
1518 struct ethtool_eeprom *, u8 *),
1519 u32 total_len)
1da177e4
LT		 1520{
1521 struct ethtool_eeprom eeprom;
b131dd5d
MSB		 1522 void __user *userbuf = useraddr + sizeof(eeprom);
1523 u32 bytes_remaining;
1da177e4 1524 u8 *data;
b131dd5d 1525 int ret = 0;
1da177e4 1526
1da177e4
LT		 1527 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1528 return -EFAULT;
1529
1530 /* Check for wrap and zero */
1531 if (eeprom.offset + eeprom.len <= eeprom.offset)
1532 return -EINVAL;
1533
1534 /* Check for exceeding total eeprom len */
081d094e 1535 if (eeprom.offset + eeprom.len > total_len)
1da177e4
LT		 1536 return -EINVAL;
1537
80ec82e3 1538 data = kzalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1539 if (!data)
1540 return -ENOMEM;
1541
b131dd5d
MSB		 1542 bytes_remaining = eeprom.len;
1543 while (bytes_remaining > 0) {
1544 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1545
081d094e 1546 ret = getter(dev, &eeprom, data);
b131dd5d
MSB		 1547 if (ret)
1548 break;
b9bbc4c1
HK		 1549 if (!eeprom.len) {
1550 ret = -EIO;
1551 break;
1552 }
b131dd5d
MSB		 1553 if (copy_to_user(userbuf, data, eeprom.len)) {
1554 ret = -EFAULT;
1555 break;
1556 }
1557 userbuf += eeprom.len;
1558 eeprom.offset += eeprom.len;
1559 bytes_remaining -= eeprom.len;
1560 }
1da177e4 1561
c5835df9
MSB		 1562 eeprom.len = userbuf - (useraddr + sizeof(eeprom));
1563 eeprom.offset -= eeprom.len;
1564 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
1565 ret = -EFAULT;
1566
1da177e4
LT		 1567 kfree(data);
1568 return ret;
1569}
1570
081d094e
BH		 1571static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
1572{
1573 const struct ethtool_ops *ops = dev->ethtool_ops;
1574
e0fb6fb6
GR		 1575 if (!ops->get_eeprom || !ops->get_eeprom_len ||
1576 !ops->get_eeprom_len(dev))
081d094e
BH		 1577 return -EOPNOTSUPP;
1578
1579 return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom,
1580 ops->get_eeprom_len(dev));
1581}
1582
1da177e4
LT		 1583static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
1584{
1585 struct ethtool_eeprom eeprom;
76fd8593 1586 const struct ethtool_ops *ops = dev->ethtool_ops;
b131dd5d
MSB		 1587 void __user *userbuf = useraddr + sizeof(eeprom);
1588 u32 bytes_remaining;
1da177e4 1589 u8 *data;
b131dd5d 1590 int ret = 0;
1da177e4 1591
e0fb6fb6
GR		 1592 if (!ops->set_eeprom || !ops->get_eeprom_len ||
1593 !ops->get_eeprom_len(dev))
1da177e4
LT		 1594 return -EOPNOTSUPP;
1595
1596 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
1597 return -EFAULT;
1598
1599 /* Check for wrap and zero */
1600 if (eeprom.offset + eeprom.len <= eeprom.offset)
1601 return -EINVAL;
1602
1603 /* Check for exceeding total eeprom len */
1604 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
1605 return -EINVAL;
1606
80ec82e3 1607 data = kzalloc(PAGE_SIZE, GFP_USER);
1da177e4
LT		 1608 if (!data)
1609 return -ENOMEM;
1610
b131dd5d
MSB		 1611 bytes_remaining = eeprom.len;
1612 while (bytes_remaining > 0) {
1613 eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE);
1614
1615 if (copy_from_user(data, userbuf, eeprom.len)) {
1616 ret = -EFAULT;
1617 break;
1618 }
1619 ret = ops->set_eeprom(dev, &eeprom, data);
1620 if (ret)
1621 break;
1622 userbuf += eeprom.len;
1623 eeprom.offset += eeprom.len;
1624 bytes_remaining -= eeprom.len;
1625 }
1da177e4 1626
1da177e4
LT		 1627 kfree(data);
1628 return ret;
1629}
1630
97f8aefb 1631static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev,
1632 void __user *useraddr)
1da177e4 1633{
8e557421 1634 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
f3ccfda1 1635 struct kernel_ethtool_coalesce kernel_coalesce = {};
31610711 1636 int ret;
1da177e4
LT		 1637
1638 if (!dev->ethtool_ops->get_coalesce)
1639 return -EOPNOTSUPP;
1640
f3ccfda1
YM		 1641 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
1642 NULL);
31610711
HK		 1643 if (ret)
1644 return ret;
1da177e4
LT		 1645
1646 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
1647 return -EFAULT;
1648 return 0;
1649}
1650
95cddcb5
JK		 1651static bool
1652ethtool_set_coalesce_supported(struct net_device *dev,
1653 struct ethtool_coalesce *coalesce)
1654{
1655 u32 supported_params = dev->ethtool_ops->supported_coalesce_params;
1656 u32 nonzero_params = 0;
1657
95cddcb5
JK		 1658 if (coalesce->rx_coalesce_usecs)
1659 nonzero_params |= ETHTOOL_COALESCE_RX_USECS;
1660 if (coalesce->rx_max_coalesced_frames)
1661 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES;
1662 if (coalesce->rx_coalesce_usecs_irq)
1663 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ;
1664 if (coalesce->rx_max_coalesced_frames_irq)
1665 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ;
1666 if (coalesce->tx_coalesce_usecs)
1667 nonzero_params |= ETHTOOL_COALESCE_TX_USECS;
1668 if (coalesce->tx_max_coalesced_frames)
1669 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES;
1670 if (coalesce->tx_coalesce_usecs_irq)
1671 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ;
1672 if (coalesce->tx_max_coalesced_frames_irq)
1673 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ;
1674 if (coalesce->stats_block_coalesce_usecs)
1675 nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS;
1676 if (coalesce->use_adaptive_rx_coalesce)
1677 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX;
1678 if (coalesce->use_adaptive_tx_coalesce)
1679 nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX;
1680 if (coalesce->pkt_rate_low)
1681 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW;
1682 if (coalesce->rx_coalesce_usecs_low)
1683 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW;
1684 if (coalesce->rx_max_coalesced_frames_low)
1685 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW;
1686 if (coalesce->tx_coalesce_usecs_low)
1687 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW;
1688 if (coalesce->tx_max_coalesced_frames_low)
1689 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW;
1690 if (coalesce->pkt_rate_high)
1691 nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH;
1692 if (coalesce->rx_coalesce_usecs_high)
1693 nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH;
1694 if (coalesce->rx_max_coalesced_frames_high)
1695 nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH;
1696 if (coalesce->tx_coalesce_usecs_high)
1697 nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH;
1698 if (coalesce->tx_max_coalesced_frames_high)
1699 nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH;
1700 if (coalesce->rate_sample_interval)
1701 nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL;
1702
1703 return (supported_params & nonzero_params) == nonzero_params;
1704}
1705
97f8aefb 1706static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev,
1707 void __user *useraddr)
1da177e4 1708{
f3ccfda1 1709 struct kernel_ethtool_coalesce kernel_coalesce = {};
1da177e4 1710 struct ethtool_coalesce coalesce;
0cf3eac8 1711 int ret;
1da177e4 1712
0276af21 1713 if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce)
1da177e4
LT		 1714 return -EOPNOTSUPP;
1715
f3ccfda1
YM		 1716 ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce,
1717 NULL);
1718 if (ret)
1719 return ret;
1720
1da177e4
LT		 1721 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
1722 return -EFAULT;
1723
95cddcb5
JK		 1724 if (!ethtool_set_coalesce_supported(dev, &coalesce))
1725 return -EOPNOTSUPP;
1726
f3ccfda1
YM		 1727 ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce,
1728 NULL);
0cf3eac8
MK		 1729 if (!ret)
1730 ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL);
1731 return ret;
1da177e4
LT		 1732}
1733
1734static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
1735{
8e557421 1736 struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM };
74624944 1737 struct kernel_ethtool_ringparam kernel_ringparam = {};
1da177e4
LT		 1738
1739 if (!dev->ethtool_ops->get_ringparam)
1740 return -EOPNOTSUPP;
1741
74624944
HC		 1742 dev->ethtool_ops->get_ringparam(dev, &ringparam,
1743 &kernel_ringparam, NULL);
1da177e4
LT		 1744
1745 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
1746 return -EFAULT;
1747 return 0;
1748}
1749
1750static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
1751{
37e2d99b 1752 struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM };
74624944 1753 struct kernel_ethtool_ringparam kernel_ringparam;
bc9d1c99 1754 int ret;
1da177e4 1755
37e2d99b 1756 if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam)
1da177e4
LT		 1757 return -EOPNOTSUPP;
1758
1759 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
1760 return -EFAULT;
1761
74624944 1762 dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL);
37e2d99b
EE		 1763
1764 /* ensure new ring parameters are within the maximums */
1765 if (ringparam.rx_pending > max.rx_max_pending ||
1766 ringparam.rx_mini_pending > max.rx_mini_max_pending ||
1767 ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending ||
1768 ringparam.tx_pending > max.tx_max_pending)
1769 return -EINVAL;
1770
74624944
HC		 1771 ret = dev->ethtool_ops->set_ringparam(dev, &ringparam,
1772 &kernel_ringparam, NULL);
bc9d1c99
MK		 1773 if (!ret)
1774 ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
1775 return ret;
1da177e4
LT		 1776}
1777
8b5933c3 1778static noinline_for_stack int ethtool_get_channels(struct net_device *dev,
1779 void __user *useraddr)
1780{
1781 struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS };
1782
1783 if (!dev->ethtool_ops->get_channels)
1784 return -EOPNOTSUPP;
1785
1786 dev->ethtool_ops->get_channels(dev, &channels);
1787
1788 if (copy_to_user(useraddr, &channels, sizeof(channels)))
1789 return -EFAULT;
1790 return 0;
1791}
1792
1793static noinline_for_stack int ethtool_set_channels(struct net_device *dev,
1794 void __user *useraddr)
1795{
b8c8a2e2 1796 struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS };
1661d346 1797 u16 from_channel, to_channel;
d4ab4286 1798 u32 max_rx_in_use = 0;
1661d346 1799 unsigned int i;
546379b9 1800 int ret;
8b5933c3 1801
8bf36862 1802 if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels)
8b5933c3 1803 return -EOPNOTSUPP;
1804
1805 if (copy_from_user(&channels, useraddr, sizeof(channels)))
1806 return -EFAULT;
1807
b8c8a2e2 1808 dev->ethtool_ops->get_channels(dev, &curr);
8bf36862 1809
75c36dbb
JK		 1810 if (channels.rx_count == curr.rx_count &&
1811 channels.tx_count == curr.tx_count &&
1812 channels.combined_count == curr.combined_count &&
1813 channels.other_count == curr.other_count)
1814 return 0;
1815
8bf36862 1816 /* ensure new counts are within the maximums */
b8c8a2e2
JK		 1817 if (channels.rx_count > curr.max_rx ||
1818 channels.tx_count > curr.max_tx ||
1819 channels.combined_count > curr.max_combined ||
1820 channels.other_count > curr.max_other)
8bf36862
KJ		 1821 return -EINVAL;
1822
7be92514
JK		 1823 /* ensure there is at least one RX and one TX channel */
1824 if (!channels.combined_count &&
1825 (!channels.rx_count || !channels.tx_count))
1826 return -EINVAL;
1827
d4ab4286
KJ		 1828 /* ensure the new Rx count fits within the configured Rx flow
1829 * indirection table settings */
1830 if (netif_is_rxfh_configured(dev) &&
1831 !ethtool_get_max_rxfh_channel(dev, &max_rx_in_use) &&
1832 (channels.combined_count + channels.rx_count) <= max_rx_in_use)
1833 return -EINVAL;
1834
1661d346
JK		 1835 /* Disabling channels, query zero-copy AF_XDP sockets */
1836 from_channel = channels.combined_count +
1837 min(channels.rx_count, channels.tx_count);
1838 to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count);
1839 for (i = from_channel; i < to_channel; i++)
c4655761 1840 if (xsk_get_pool_from_qid(dev, i))
1661d346
JK		 1841 return -EINVAL;
1842
546379b9
MK		 1843 ret = dev->ethtool_ops->set_channels(dev, &channels);
1844 if (!ret)
1845 ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL);
1846 return ret;
8b5933c3 1847}
1848
1da177e4
LT		 1849static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
1850{
e83887f6 1851 struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM };
1da177e4
LT		 1852
1853 if (!dev->ethtool_ops->get_pauseparam)
1854 return -EOPNOTSUPP;
1855
1856 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
1857
1858 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
1859 return -EFAULT;
1860 return 0;
1861}
1862
1863static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
1864{
1865 struct ethtool_pauseparam pauseparam;
bf37faa3 1866 int ret;
1da177e4 1867
e1b90c41 1868 if (!dev->ethtool_ops->set_pauseparam)
1da177e4
LT		 1869 return -EOPNOTSUPP;
1870
1871 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
1872 return -EFAULT;
1873
bf37faa3
MK		 1874 ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
1875 if (!ret)
1876 ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL);
1877 return ret;
1da177e4
LT		 1878}
1879
1da177e4
LT		 1880static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
1881{
1882 struct ethtool_test test;
76fd8593 1883 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 1884 u64 *data;
ff03d49f 1885 int ret, test_len;
1da177e4 1886
a9828ec6 1887 if (!ops->self_test || !ops->get_sset_count)
1da177e4
LT		 1888 return -EOPNOTSUPP;
1889
a9828ec6 1890 test_len = ops->get_sset_count(dev, ETH_SS_TEST);
ff03d49f
JG		 1891 if (test_len < 0)
1892 return test_len;
1893 WARN_ON(test_len == 0);
1894
1da177e4
LT		 1895 if (copy_from_user(&test, useraddr, sizeof(test)))
1896 return -EFAULT;
1897
ff03d49f 1898 test.len = test_len;
80ec82e3 1899 data = kcalloc(test_len, sizeof(u64), GFP_USER);
1da177e4
LT		 1900 if (!data)
1901 return -ENOMEM;
1902
77e9b2ab 1903 netif_testing_on(dev);
1da177e4 1904 ops->self_test(dev, &test, data);
77e9b2ab 1905 netif_testing_off(dev);
1da177e4
LT		 1906
1907 ret = -EFAULT;
1908 if (copy_to_user(useraddr, &test, sizeof(test)))
1909 goto out;
1910 useraddr += sizeof(test);
ed717613 1911 if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64))))
1da177e4
LT		 1912 goto out;
1913 ret = 0;
1914
1915 out:
1916 kfree(data);
1917 return ret;
1918}
1919
1920static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
1921{
1922 struct ethtool_gstrings gstrings;
1da177e4
LT		 1923 u8 *data;
1924 int ret;
1925
1da177e4
LT		 1926 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
1927 return -EFAULT;
1928
340ae165 1929 ret = __ethtool_get_sset_count(dev, gstrings.string_set);
a9828ec6
BH		 1930 if (ret < 0)
1931 return ret;
4d1ceea8
AS		 1932 if (ret > S32_MAX / ETH_GSTRING_LEN)
1933 return -ENOMEM;
1934 WARN_ON_ONCE(!ret);
a9828ec6
BH		 1935
1936 gstrings.len = ret;
1da177e4 1937
3d883026
LR		 1938 if (gstrings.len) {
1939 data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN));
1940 if (!data)
1941 return -ENOMEM;
1942
1943 __ethtool_get_strings(dev, gstrings.string_set, data);
1944 } else {
1945 data = NULL;
1946 }
1da177e4
LT		 1947
1948 ret = -EFAULT;
1949 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
1950 goto out;
1951 useraddr += sizeof(gstrings);
4d1ceea8 1952 if (gstrings.len &&
ed717613
GS		 1953 copy_to_user(useraddr, data,
1954 array_size(gstrings.len, ETH_GSTRING_LEN)))
1da177e4
LT		 1955 goto out;
1956 ret = 0;
1957
340ae165 1958out:
4d1ceea8 1959 vfree(data);
1da177e4
LT		 1960 return ret;
1961}
1962
7888fe53
AD		 1963__printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...)
1964{
1965 va_list args;
1966
1967 va_start(args, fmt);
1968 vsnprintf(*data, ETH_GSTRING_LEN, fmt, args);
1969 va_end(args);
1970
1971 *data += ETH_GSTRING_LEN;
1972}
1973EXPORT_SYMBOL(ethtool_sprintf);
1974
1da177e4
LT		 1975static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
1976{
1977 struct ethtool_value id;
68f512f2 1978 static bool busy;
c03a14e8 1979 const struct ethtool_ops *ops = dev->ethtool_ops;
5ae21950 1980 netdevice_tracker dev_tracker;
68f512f2 1981 int rc;
1da177e4 1982
c03a14e8 1983 if (!ops->set_phys_id)
1da177e4
LT		 1984 return -EOPNOTSUPP;
1985
68f512f2
BH		 1986 if (busy)
1987 return -EBUSY;
1988
1da177e4
LT		 1989 if (copy_from_user(&id, useraddr, sizeof(id)))
1990 return -EFAULT;
1991
c03a14e8 1992 rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE);
fce55922 1993 if (rc < 0)
68f512f2
BH		 1994 return rc;
1995
1996 /* Drop the RTNL lock while waiting, but prevent reentry or
1997 * removal of the device.
1998 */
1999 busy = true;
d62607c3 2000 netdev_hold(dev, &dev_tracker, GFP_KERNEL);
68f512f2
BH		 2001 rtnl_unlock();
2002
2003 if (rc == 0) {
2004 /* Driver will handle this itself */
2005 schedule_timeout_interruptible(
143780c6 2006 id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT);
68f512f2 2007 } else {
fce55922 2008 /* Driver expects to be called at twice the frequency in rc */
2adc6edc
EC		 2009 int n = rc * 2, interval = HZ / n;
2010 u64 count = n * id.data, i = 0;
fce55922 2011
68f512f2 2012 do {
2adc6edc
EC		 2013 rtnl_lock();
2014 rc = ops->set_phys_id(dev,
2015 (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON);
2016 rtnl_unlock();
2017 if (rc)
2018 break;
2019 schedule_timeout_interruptible(interval);
2020 } while (!signal_pending(current) && (!id.data || i < count));
68f512f2
BH		 2021 }
2022
2023 rtnl_lock();
d62607c3 2024 netdev_put(dev, &dev_tracker);
68f512f2
BH		 2025 busy = false;
2026
c03a14e8 2027 (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE);
68f512f2 2028 return rc;
1da177e4
LT		 2029}
2030
2031static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
2032{
2033 struct ethtool_stats stats;
76fd8593 2034 const struct ethtool_ops *ops = dev->ethtool_ops;
1da177e4 2035 u64 *data;
ff03d49f 2036 int ret, n_stats;
1da177e4 2037
a9828ec6 2038 if (!ops->get_ethtool_stats || !ops->get_sset_count)
1da177e4
LT		 2039 return -EOPNOTSUPP;
2040
a9828ec6 2041 n_stats = ops->get_sset_count(dev, ETH_SS_STATS);
ff03d49f
JG		 2042 if (n_stats < 0)
2043 return n_stats;
4d1ceea8
AS		 2044 if (n_stats > S32_MAX / sizeof(u64))
2045 return -ENOMEM;
2046 WARN_ON_ONCE(!n_stats);
1da177e4
LT		 2047 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2048 return -EFAULT;
2049
ff03d49f 2050 stats.n_stats = n_stats;
1da177e4 2051
3d883026
LR		 2052 if (n_stats) {
2053 data = vzalloc(array_size(n_stats, sizeof(u64)));
2054 if (!data)
2055 return -ENOMEM;
2056 ops->get_ethtool_stats(dev, &stats, data);
2057 } else {
2058 data = NULL;
2059 }
1da177e4
LT		 2060
2061 ret = -EFAULT;
2062 if (copy_to_user(useraddr, &stats, sizeof(stats)))
2063 goto out;
2064 useraddr += sizeof(stats);
3dd14996 2065 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
1da177e4
LT		 2066 goto out;
2067 ret = 0;
2068
2069 out:
4d1ceea8 2070 vfree(data);
1da177e4
LT		 2071 return ret;
2072}
2073
f3a40945
AL		 2074static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr)
2075{
17809516 2076 const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops;
99943382 2077 const struct ethtool_ops *ops = dev->ethtool_ops;
f3a40945 2078 struct phy_device *phydev = dev->phydev;
99943382 2079 struct ethtool_stats stats;
f3a40945
AL		 2080 u64 *data;
2081 int ret, n_stats;
2082
99943382 2083 if (!phydev && (!ops->get_ethtool_phy_stats || !ops->get_sset_count))
f3a40945
AL		 2084 return -EOPNOTSUPP;
2085
ccd21ec5 2086 if (phydev && !ops->get_ethtool_phy_stats &&
17809516 2087 phy_ops && phy_ops->get_sset_count)
ccd21ec5 2088 n_stats = phy_ops->get_sset_count(phydev);
99943382
FF		 2089 else
2090 n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS);
f3a40945
AL		 2091 if (n_stats < 0)
2092 return n_stats;
4d1ceea8
AS		 2093 if (n_stats > S32_MAX / sizeof(u64))
2094 return -ENOMEM;
2095 WARN_ON_ONCE(!n_stats);
f3a40945
AL		 2096
2097 if (copy_from_user(&stats, useraddr, sizeof(stats)))
2098 return -EFAULT;
2099
2100 stats.n_stats = n_stats;
f3a40945 2101
3d883026
LR		 2102 if (n_stats) {
2103 data = vzalloc(array_size(n_stats, sizeof(u64)));
2104 if (!data)
2105 return -ENOMEM;
2106
ccd21ec5 2107 if (phydev && !ops->get_ethtool_phy_stats &&
17809516 2108 phy_ops && phy_ops->get_stats) {
ccd21ec5 2109 ret = phy_ops->get_stats(phydev, &stats, data);
3d883026
LR		 2110 if (ret < 0)
2111 goto out;
2112 } else {
2113 ops->get_ethtool_phy_stats(dev, &stats, data);
2114 }
99943382 2115 } else {
3d883026 2116 data = NULL;
99943382 2117 }
f3a40945
AL		 2118
2119 ret = -EFAULT;
2120 if (copy_to_user(useraddr, &stats, sizeof(stats)))
2121 goto out;
2122 useraddr += sizeof(stats);
3dd14996 2123 if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64))))
f3a40945
AL		 2124 goto out;
2125 ret = 0;
2126
2127 out:
4d1ceea8 2128 vfree(data);
f3a40945
AL		 2129 return ret;
2130}
2131
0bf0519d 2132static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr)
a6f9a705
JW		 2133{
2134 struct ethtool_perm_addr epaddr;
a6f9a705 2135
313674af 2136 if (copy_from_user(&epaddr, useraddr, sizeof(epaddr)))
a6f9a705
JW		 2137 return -EFAULT;
2138
313674af
MW		 2139 if (epaddr.size < dev->addr_len)
2140 return -ETOOSMALL;
2141 epaddr.size = dev->addr_len;
a6f9a705 2142
a6f9a705 2143 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
313674af 2144 return -EFAULT;
a6f9a705 2145 useraddr += sizeof(epaddr);
313674af
MW		 2146 if (copy_to_user(useraddr, dev->perm_addr, epaddr.size))
2147 return -EFAULT;
2148 return 0;
a6f9a705
JW		 2149}
2150
13c99b24
JG		 2151static int ethtool_get_value(struct net_device *dev, char __user *useraddr,
2152 u32 cmd, u32 (*actor)(struct net_device *))
3ae7c0b2 2153{
8e557421 2154 struct ethtool_value edata = { .cmd = cmd };
3ae7c0b2 2155
13c99b24 2156 if (!actor)
3ae7c0b2
JG		 2157 return -EOPNOTSUPP;
2158
13c99b24 2159 edata.data = actor(dev);
3ae7c0b2
JG		 2160
2161 if (copy_to_user(useraddr, &edata, sizeof(edata)))
2162 return -EFAULT;
2163 return 0;
2164}
2165
13c99b24
JG		 2166static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr,
2167 void (*actor)(struct net_device *, u32))
3ae7c0b2
JG		 2168{
2169 struct ethtool_value edata;
2170
13c99b24 2171 if (!actor)
3ae7c0b2
JG		 2172 return -EOPNOTSUPP;
2173
2174 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2175 return -EFAULT;
2176
13c99b24 2177 actor(dev, edata.data);
339bf024
JG		 2178 return 0;
2179}
2180
13c99b24
JG		 2181static int ethtool_set_value(struct net_device *dev, char __user *useraddr,
2182 int (*actor)(struct net_device *, u32))
339bf024
JG		 2183{
2184 struct ethtool_value edata;
2185
13c99b24 2186 if (!actor)
339bf024
JG		 2187 return -EOPNOTSUPP;
2188
2189 if (copy_from_user(&edata, useraddr, sizeof(edata)))
2190 return -EFAULT;
2191
13c99b24 2192 return actor(dev, edata.data);
339bf024
JG		 2193}
2194
095cfcfe
JK		 2195static int
2196ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req)
05c6a8d7 2197{
1af0a094
JK		 2198 if (!dev->ethtool_ops->flash_device) {
2199 req->devlink = netdev_to_devlink_get(dev);
2200 return 0;
2201 }
786f5281 2202
095cfcfe 2203 return dev->ethtool_ops->flash_device(dev, &req->efl);
05c6a8d7
AK		 2204}
2205
29dd54b7
AC		 2206static int ethtool_set_dump(struct net_device *dev,
2207 void __user *useraddr)
2208{
2209 struct ethtool_dump dump;
2210
2211 if (!dev->ethtool_ops->set_dump)
2212 return -EOPNOTSUPP;
2213
2214 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2215 return -EFAULT;
2216
2217 return dev->ethtool_ops->set_dump(dev, &dump);
2218}
2219
2220static int ethtool_get_dump_flag(struct net_device *dev,
2221 void __user *useraddr)
2222{
2223 int ret;
2224 struct ethtool_dump dump;
2225 const struct ethtool_ops *ops = dev->ethtool_ops;
2226
c03a14e8 2227 if (!ops->get_dump_flag)
29dd54b7
AC		 2228 return -EOPNOTSUPP;
2229
2230 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2231 return -EFAULT;
2232
2233 ret = ops->get_dump_flag(dev, &dump);
2234 if (ret)
2235 return ret;
2236
2237 if (copy_to_user(useraddr, &dump, sizeof(dump)))
2238 return -EFAULT;
2239 return 0;
2240}
2241
2242static int ethtool_get_dump_data(struct net_device *dev,
2243 void __user *useraddr)
2244{
2245 int ret;
2246 __u32 len;
2247 struct ethtool_dump dump, tmp;
2248 const struct ethtool_ops *ops = dev->ethtool_ops;
2249 void *data = NULL;
2250
c03a14e8 2251 if (!ops->get_dump_data || !ops->get_dump_flag)
29dd54b7
AC		 2252 return -EOPNOTSUPP;
2253
2254 if (copy_from_user(&dump, useraddr, sizeof(dump)))
2255 return -EFAULT;
2256
2257 memset(&tmp, 0, sizeof(tmp));
2258 tmp.cmd = ETHTOOL_GET_DUMP_FLAG;
2259 ret = ops->get_dump_flag(dev, &tmp);
2260 if (ret)
2261 return ret;
2262
c590b5e2 2263 len = min(tmp.len, dump.len);
29dd54b7
AC		 2264 if (!len)
2265 return -EFAULT;
2266
c590b5e2
MS		 2267 /* Don't ever let the driver think there's more space available
2268 * than it requested with .get_dump_flag().
2269 */
2270 dump.len = len;
2271
2272 /* Always allocate enough space to hold the whole thing so that the
2273 * driver does not need to check the length and bother with partial
2274 * dumping.
2275 */
29dd54b7
AC		 2276 data = vzalloc(tmp.len);
2277 if (!data)
2278 return -ENOMEM;
2279 ret = ops->get_dump_data(dev, &dump, data);
2280 if (ret)
2281 goto out;
2282
c590b5e2
MS		 2283 /* There are two sane possibilities:
2284 * 1. The driver's .get_dump_data() does not touch dump.len.
2285 * 2. Or it may set dump.len to how much it really writes, which
2286 * should be tmp.len (or len if it can do a partial dump).
2287 * In any case respond to userspace with the actual length of data
2288 * it's receiving.
2289 */
2290 WARN_ON(dump.len != len && dump.len != tmp.len);
2291 dump.len = len;
2292
29dd54b7
AC		 2293 if (copy_to_user(useraddr, &dump, sizeof(dump))) {
2294 ret = -EFAULT;
2295 goto out;
2296 }
2297 useraddr += offsetof(struct ethtool_dump, data);
2298 if (copy_to_user(useraddr, data, len))
2299 ret = -EFAULT;
2300out:
2301 vfree(data);
2302 return ret;
2303}
2304
c8f3a8c3
RC		 2305static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr)
2306{
c8f3a8c3 2307 struct ethtool_ts_info info;
5b071c59 2308 int err;
c8f3a8c3 2309
5b071c59 2310 err = __ethtool_get_ts_info(dev, &info);
c8f3a8c3
RC		 2311 if (err)
2312 return err;
2313
2314 if (copy_to_user(useraddr, &info, sizeof(info)))
5b071c59 2315 return -EFAULT;
c8f3a8c3 2316
5b071c59 2317 return 0;
c8f3a8c3
RC		 2318}
2319
95dfc7ef
AL		 2320int ethtool_get_module_info_call(struct net_device *dev,
2321 struct ethtool_modinfo *modinfo)
2f438366
ES		 2322{
2323 const struct ethtool_ops *ops = dev->ethtool_ops;
2324 struct phy_device *phydev = dev->phydev;
2325
e679c9c1
RK		 2326 if (dev->sfp_bus)
2327 return sfp_get_module_info(dev->sfp_bus, modinfo);
2328
2f438366
ES		 2329 if (phydev && phydev->drv && phydev->drv->module_info)
2330 return phydev->drv->module_info(phydev, modinfo);
2331
2332 if (ops->get_module_info)
2333 return ops->get_module_info(dev, modinfo);
2334
2335 return -EOPNOTSUPP;
2336}
2337
41c3cb6d
SH		 2338static int ethtool_get_module_info(struct net_device *dev,
2339 void __user *useraddr)
2340{
2341 int ret;
2342 struct ethtool_modinfo modinfo;
41c3cb6d
SH		 2343
2344 if (copy_from_user(&modinfo, useraddr, sizeof(modinfo)))
2345 return -EFAULT;
2346
95dfc7ef 2347 ret = ethtool_get_module_info_call(dev, &modinfo);
41c3cb6d
SH		 2348 if (ret)
2349 return ret;
2350
2351 if (copy_to_user(useraddr, &modinfo, sizeof(modinfo)))
2352 return -EFAULT;
2353
2354 return 0;
2355}
2356
95dfc7ef
AL		 2357int ethtool_get_module_eeprom_call(struct net_device *dev,
2358 struct ethtool_eeprom *ee, u8 *data)
2f438366
ES		 2359{
2360 const struct ethtool_ops *ops = dev->ethtool_ops;
2361 struct phy_device *phydev = dev->phydev;
2362
e679c9c1
RK		 2363 if (dev->sfp_bus)
2364 return sfp_get_module_eeprom(dev->sfp_bus, ee, data);
2365
2f438366
ES		 2366 if (phydev && phydev->drv && phydev->drv->module_eeprom)
2367 return phydev->drv->module_eeprom(phydev, ee, data);
2368
2369 if (ops->get_module_eeprom)
2370 return ops->get_module_eeprom(dev, ee, data);
2371
2372 return -EOPNOTSUPP;
2373}
2374
41c3cb6d
SH		 2375static int ethtool_get_module_eeprom(struct net_device *dev,
2376 void __user *useraddr)
2377{
2378 int ret;
2379 struct ethtool_modinfo modinfo;
41c3cb6d 2380
95dfc7ef 2381 ret = ethtool_get_module_info_call(dev, &modinfo);
41c3cb6d
SH		 2382 if (ret)
2383 return ret;
2384
2f438366 2385 return ethtool_get_any_eeprom(dev, useraddr,
95dfc7ef 2386 ethtool_get_module_eeprom_call,
41c3cb6d
SH		 2387 modinfo.eeprom_len);
2388}
2389
f0db9b07
GV		 2390static int ethtool_tunable_valid(const struct ethtool_tunable *tuna)
2391{
2392 switch (tuna->id) {
2393 case ETHTOOL_RX_COPYBREAK:
1255a505 2394 case ETHTOOL_TX_COPYBREAK:
448f413a 2395 case ETHTOOL_TX_COPYBREAK_BUF_SIZE:
f0db9b07
GV		 2396 if (tuna->len != sizeof(u32) ||
2397 tuna->type_id != ETHTOOL_TUNABLE_U32)
2398 return -EINVAL;
2399 break;
e1577c1c
IK		 2400 case ETHTOOL_PFC_PREVENTION_TOUT:
2401 if (tuna->len != sizeof(u16) ||
2402 tuna->type_id != ETHTOOL_TUNABLE_U16)
2403 return -EINVAL;
2404 break;
f0db9b07
GV		 2405 default:
2406 return -EINVAL;
2407 }
2408
2409 return 0;
2410}
2411
2412static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr)
2413{
2414 int ret;
2415 struct ethtool_tunable tuna;
2416 const struct ethtool_ops *ops = dev->ethtool_ops;
2417 void *data;
2418
2419 if (!ops->get_tunable)
2420 return -EOPNOTSUPP;
2421 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2422 return -EFAULT;
2423 ret = ethtool_tunable_valid(&tuna);
2424 if (ret)
2425 return ret;
80ec82e3 2426 data = kzalloc(tuna.len, GFP_USER);
f0db9b07
GV		 2427 if (!data)
2428 return -ENOMEM;
2429 ret = ops->get_tunable(dev, &tuna, data);
2430 if (ret)
2431 goto out;
2432 useraddr += sizeof(tuna);
2433 ret = -EFAULT;
2434 if (copy_to_user(useraddr, data, tuna.len))
2435 goto out;
2436 ret = 0;
2437
2438out:
2439 kfree(data);
2440 return ret;
2441}
2442
2443static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr)
2444{
2445 int ret;
2446 struct ethtool_tunable tuna;
2447 const struct ethtool_ops *ops = dev->ethtool_ops;
2448 void *data;
2449
2450 if (!ops->set_tunable)
2451 return -EOPNOTSUPP;
2452 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2453 return -EFAULT;
2454 ret = ethtool_tunable_valid(&tuna);
2455 if (ret)
2456 return ret;
f0db9b07 2457 useraddr += sizeof(tuna);
30e7e3ec
AV		 2458 data = memdup_user(useraddr, tuna.len);
2459 if (IS_ERR(data))
2460 return PTR_ERR(data);
f0db9b07
GV		 2461 ret = ops->set_tunable(dev, &tuna, data);
2462
f0db9b07
GV		 2463 kfree(data);
2464 return ret;
2465}
2466
3499e87e
AB		 2467static noinline_for_stack int
2468ethtool_get_per_queue_coalesce(struct net_device *dev,
2469 void __user *useraddr,
2470 struct ethtool_per_queue_op *per_queue_opt)
421797b1
KL		 2471{
2472 u32 bit;
2473 int ret;
2474 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2475
2476 if (!dev->ethtool_ops->get_per_queue_coalesce)
2477 return -EOPNOTSUPP;
2478
2479 useraddr += sizeof(*per_queue_opt);
2480
3aa56885
YN		 2481 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask,
2482 MAX_NUM_QUEUE);
421797b1
KL		 2483
2484 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2485 struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE };
2486
2487 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce);
2488 if (ret != 0)
2489 return ret;
2490 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
2491 return -EFAULT;
2492 useraddr += sizeof(coalesce);
2493 }
2494
2495 return 0;
2496}
2497
3499e87e
AB		 2498static noinline_for_stack int
2499ethtool_set_per_queue_coalesce(struct net_device *dev,
2500 void __user *useraddr,
2501 struct ethtool_per_queue_op *per_queue_opt)
f38d138a
KL		 2502{
2503 u32 bit;
2504 int i, ret = 0;
2505 int n_queue;
2506 struct ethtool_coalesce *backup = NULL, *tmp = NULL;
2507 DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE);
2508
2509 if ((!dev->ethtool_ops->set_per_queue_coalesce) ||
2510 (!dev->ethtool_ops->get_per_queue_coalesce))
2511 return -EOPNOTSUPP;
2512
2513 useraddr += sizeof(*per_queue_opt);
2514
3aa56885 2515 bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE);
f38d138a
KL		 2516 n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE);
2517 tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL);
2518 if (!backup)
2519 return -ENOMEM;
2520
2521 for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) {
2522 struct ethtool_coalesce coalesce;
2523
2524 ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp);
2525 if (ret != 0)
2526 goto roll_back;
2527
2528 tmp++;
2529
2530 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) {
2531 ret = -EFAULT;
2532 goto roll_back;
2533 }
2534
95cddcb5
JK		 2535 if (!ethtool_set_coalesce_supported(dev, &coalesce)) {
2536 ret = -EOPNOTSUPP;
2537 goto roll_back;
2538 }
2539
f38d138a
KL		 2540 ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce);
2541 if (ret != 0)
2542 goto roll_back;
2543
2544 useraddr += sizeof(coalesce);
2545 }
2546
2547roll_back:
2548 if (ret != 0) {
2549 tmp = backup;
2550 for_each_set_bit(i, queue_mask, bit) {
2551 dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp);
2552 tmp++;
2553 }
2554 }
2555 kfree(backup);
2556
2557 return ret;
2558}
2559
3499e87e 2560static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev,
58f5bbe3 2561 void __user *useraddr, u32 sub_cmd)
ac2c7ad0
KL		 2562{
2563 struct ethtool_per_queue_op per_queue_opt;
2564
2565 if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt)))
2566 return -EFAULT;
2567
58f5bbe3
WW		 2568 if (per_queue_opt.sub_command != sub_cmd)
2569 return -EINVAL;
2570
ac2c7ad0 2571 switch (per_queue_opt.sub_command) {
421797b1
KL		 2572 case ETHTOOL_GCOALESCE:
2573 return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt);
f38d138a
KL		 2574 case ETHTOOL_SCOALESCE:
2575 return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt);
ac2c7ad0
KL		 2576 default:
2577 return -EOPNOTSUPP;
9d253c02 2578 }
ac2c7ad0
KL		 2579}
2580
968ad9da
RL		 2581static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna)
2582{
2583 switch (tuna->id) {
65feddd5 2584 case ETHTOOL_PHY_DOWNSHIFT:
3aeb0803 2585 case ETHTOOL_PHY_FAST_LINK_DOWN:
65feddd5
RL		 2586 if (tuna->len != sizeof(u8) ||
2587 tuna->type_id != ETHTOOL_TUNABLE_U8)
2588 return -EINVAL;
2589 break;
9f2f13f4
AA		 2590 case ETHTOOL_PHY_EDPD:
2591 if (tuna->len != sizeof(u16) ||
2592 tuna->type_id != ETHTOOL_TUNABLE_U16)
2593 return -EINVAL;
2594 break;
968ad9da
RL		 2595 default:
2596 return -EINVAL;
2597 }
2598
2599 return 0;
2600}
2601
2602static int get_phy_tunable(struct net_device *dev, void __user *useraddr)
2603{
968ad9da 2604 struct phy_device *phydev = dev->phydev;
c6db31ff
IR		 2605 struct ethtool_tunable tuna;
2606 bool phy_drv_tunable;
968ad9da 2607 void *data;
c6db31ff 2608 int ret;
968ad9da 2609
c6db31ff
IR		 2610 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
2611 if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable)
968ad9da 2612 return -EOPNOTSUPP;
968ad9da
RL		 2613 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2614 return -EFAULT;
2615 ret = ethtool_phy_tunable_valid(&tuna);
2616 if (ret)
2617 return ret;
80ec82e3 2618 data = kzalloc(tuna.len, GFP_USER);
968ad9da
RL		 2619 if (!data)
2620 return -ENOMEM;
c6db31ff
IR		 2621 if (phy_drv_tunable) {
2622 mutex_lock(&phydev->lock);
2623 ret = phydev->drv->get_tunable(phydev, &tuna, data);
2624 mutex_unlock(&phydev->lock);
2625 } else {
2626 ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data);
2627 }
968ad9da
RL		 2628 if (ret)
2629 goto out;
2630 useraddr += sizeof(tuna);
2631 ret = -EFAULT;
2632 if (copy_to_user(useraddr, data, tuna.len))
2633 goto out;
2634 ret = 0;
2635
2636out:
2637 kfree(data);
2638 return ret;
2639}
2640
2641static int set_phy_tunable(struct net_device *dev, void __user *useraddr)
2642{
968ad9da 2643 struct phy_device *phydev = dev->phydev;
c6db31ff
IR		 2644 struct ethtool_tunable tuna;
2645 bool phy_drv_tunable;
968ad9da 2646 void *data;
c6db31ff 2647 int ret;
968ad9da 2648
c6db31ff
IR		 2649 phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable;
2650 if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable)
968ad9da
RL		 2651 return -EOPNOTSUPP;
2652 if (copy_from_user(&tuna, useraddr, sizeof(tuna)))
2653 return -EFAULT;
2654 ret = ethtool_phy_tunable_valid(&tuna);
2655 if (ret)
2656 return ret;
968ad9da 2657 useraddr += sizeof(tuna);
30e7e3ec
AV		 2658 data = memdup_user(useraddr, tuna.len);
2659 if (IS_ERR(data))
2660 return PTR_ERR(data);
c6db31ff
IR		 2661 if (phy_drv_tunable) {
2662 mutex_lock(&phydev->lock);
2663 ret = phydev->drv->set_tunable(phydev, &tuna, data);
2664 mutex_unlock(&phydev->lock);
2665 } else {
2666 ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data);
2667 }
968ad9da 2668
968ad9da
RL		 2669 kfree(data);
2670 return ret;
2671}
2672
1a5f3da2
VSR		 2673static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr)
2674{
e83887f6 2675 struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM };
a6d50512 2676 int rc;
1a5f3da2
VSR		 2677
2678 if (!dev->ethtool_ops->get_fecparam)
2679 return -EOPNOTSUPP;
2680
a6d50512
EC		 2681 rc = dev->ethtool_ops->get_fecparam(dev, &fecparam);
2682 if (rc)
2683 return rc;
1a5f3da2 2684
240e1144
JK		 2685 if (WARN_ON_ONCE(fecparam.reserved))
2686 fecparam.reserved = 0;
2687
1a5f3da2
VSR		 2688 if (copy_to_user(useraddr, &fecparam, sizeof(fecparam)))
2689 return -EFAULT;
2690 return 0;
2691}
2692
2693static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr)
2694{
2695 struct ethtool_fecparam fecparam;
2696
2697 if (!dev->ethtool_ops->set_fecparam)
2698 return -EOPNOTSUPP;
2699
2700 if (copy_from_user(&fecparam, useraddr, sizeof(fecparam)))
2701 return -EFAULT;
2702
cf2cc0bf 2703 if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE)
42ce127d
JK		 2704 return -EINVAL;
2705
d3b37fc8 2706 fecparam.active_fec = 0;
240e1144
JK		 2707 fecparam.reserved = 0;
2708
1a5f3da2
VSR		 2709 return dev->ethtool_ops->set_fecparam(dev, &fecparam);
2710}
2711
600fed5e 2712/* The main entry point in this file. Called from net/core/dev_ioctl.c */
1da177e4 2713
f49deaa6 2714static int
095cfcfe
JK		 2715__dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr,
2716 u32 ethcmd, struct ethtool_devlink_compat *devlink_state)
1da177e4 2717{
095cfcfe
JK		 2718 struct net_device *dev;
2719 u32 sub_cmd;
1da177e4 2720 int rc;
b29d3145 2721 netdev_features_t old_features;
1da177e4 2722
095cfcfe 2723 dev = __dev_get_by_name(net, ifr->ifr_name);
f32a2137 2724 if (!dev)
1da177e4
LT		 2725 return -ENODEV;
2726
ac2c7ad0
KL		 2727 if (ethcmd == ETHTOOL_PERQUEUE) {
2728 if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd)))
2729 return -EFAULT;
2730 } else {
2731 sub_cmd = ethcmd;
2732 }
75f3123c 2733 /* Allow some commands to be done by anyone */
ac2c7ad0 2734 switch (sub_cmd) {
0fdc100b 2735 case ETHTOOL_GSET:
75f3123c 2736 case ETHTOOL_GDRVINFO:
75f3123c 2737 case ETHTOOL_GMSGLVL:
2da45db2 2738 case ETHTOOL_GLINK:
75f3123c
SH		 2739 case ETHTOOL_GCOALESCE:
2740 case ETHTOOL_GRINGPARAM:
2741 case ETHTOOL_GPAUSEPARAM:
2742 case ETHTOOL_GRXCSUM:
2743 case ETHTOOL_GTXCSUM:
2744 case ETHTOOL_GSG:
f80400a2 2745 case ETHTOOL_GSSET_INFO:
75f3123c 2746 case ETHTOOL_GSTRINGS:
2da45db2 2747 case ETHTOOL_GSTATS:
f3a40945 2748 case ETHTOOL_GPHYSTATS:
75f3123c
SH		 2749 case ETHTOOL_GTSO:
2750 case ETHTOOL_GPERMADDR:
474ff260 2751 case ETHTOOL_GUFO:
75f3123c 2752 case ETHTOOL_GGSO:
1cab819b 2753 case ETHTOOL_GGRO:
339bf024
JG		 2754 case ETHTOOL_GFLAGS:
2755 case ETHTOOL_GPFLAGS:
0853ad66 2756 case ETHTOOL_GRXFH:
59089d8d
SB		 2757 case ETHTOOL_GRXRINGS:
2758 case ETHTOOL_GRXCLSRLCNT:
2759 case ETHTOOL_GRXCLSRULE:
2760 case ETHTOOL_GRXCLSRLALL:
2da45db2 2761 case ETHTOOL_GRXFHINDIR:
3de0b592 2762 case ETHTOOL_GRSSH:
5455c699 2763 case ETHTOOL_GFEATURES:
2da45db2 2764 case ETHTOOL_GCHANNELS:
c8f3a8c3 2765 case ETHTOOL_GET_TS_INFO:
2da45db2 2766 case ETHTOOL_GEEE:
f0db9b07 2767 case ETHTOOL_GTUNABLE:
968ad9da 2768 case ETHTOOL_PHY_GTUNABLE:
8006f6bf 2769 case ETHTOOL_GLINKSETTINGS:
1a5f3da2 2770 case ETHTOOL_GFECPARAM:
75f3123c
SH		 2771 break;
2772 default:
5e1fccc0 2773 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
75f3123c
SH		 2774 return -EPERM;
2775 }
2776
f32a2137
HK		 2777 if (dev->dev.parent)
2778 pm_runtime_get_sync(dev->dev.parent);
2779
2780 if (!netif_device_present(dev)) {
2781 rc = -ENODEV;
2782 goto out;
2783 }
2784
97f8aefb 2785 if (dev->ethtool_ops->begin) {
2786 rc = dev->ethtool_ops->begin(dev);
f32a2137
HK		 2787 if (rc < 0)
2788 goto out;
97f8aefb 2789 }
d8a33ac4
SH		 2790 old_features = dev->features;
2791
1da177e4
LT		 2792 switch (ethcmd) {
2793 case ETHTOOL_GSET:
2794 rc = ethtool_get_settings(dev, useraddr);
2795 break;
2796 case ETHTOOL_SSET:
2797 rc = ethtool_set_settings(dev, useraddr);
2798 break;
2799 case ETHTOOL_GDRVINFO:
095cfcfe 2800 rc = ethtool_get_drvinfo(dev, devlink_state);
1da177e4
LT		 2801 break;
2802 case ETHTOOL_GREGS:
2803 rc = ethtool_get_regs(dev, useraddr);
2804 break;
2805 case ETHTOOL_GWOL:
2806 rc = ethtool_get_wol(dev, useraddr);
2807 break;
2808 case ETHTOOL_SWOL:
2809 rc = ethtool_set_wol(dev, useraddr);
2810 break;
2811 case ETHTOOL_GMSGLVL:
13c99b24
JG		 2812 rc = ethtool_get_value(dev, useraddr, ethcmd,
2813 dev->ethtool_ops->get_msglevel);
1da177e4
LT		 2814 break;
2815 case ETHTOOL_SMSGLVL:
13c99b24
JG		 2816 rc = ethtool_set_value_void(dev, useraddr,
2817 dev->ethtool_ops->set_msglevel);
0bda7af3
MK		 2818 if (!rc)
2819 ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL);
1da177e4 2820 break;
80f12ecc
YM		 2821 case ETHTOOL_GEEE:
2822 rc = ethtool_get_eee(dev, useraddr);
2823 break;
2824 case ETHTOOL_SEEE:
2825 rc = ethtool_set_eee(dev, useraddr);
2826 break;
1da177e4
LT		 2827 case ETHTOOL_NWAY_RST:
2828 rc = ethtool_nway_reset(dev);
2829 break;
2830 case ETHTOOL_GLINK:
e596e6e4 2831 rc = ethtool_get_link(dev, useraddr);
1da177e4
LT		 2832 break;
2833 case ETHTOOL_GEEPROM:
2834 rc = ethtool_get_eeprom(dev, useraddr);
2835 break;
2836 case ETHTOOL_SEEPROM:
2837 rc = ethtool_set_eeprom(dev, useraddr);
2838 break;
2839 case ETHTOOL_GCOALESCE:
2840 rc = ethtool_get_coalesce(dev, useraddr);
2841 break;
2842 case ETHTOOL_SCOALESCE:
2843 rc = ethtool_set_coalesce(dev, useraddr);
2844 break;
2845 case ETHTOOL_GRINGPARAM:
2846 rc = ethtool_get_ringparam(dev, useraddr);
2847 break;
2848 case ETHTOOL_SRINGPARAM:
2849 rc = ethtool_set_ringparam(dev, useraddr);
2850 break;
2851 case ETHTOOL_GPAUSEPARAM:
2852 rc = ethtool_get_pauseparam(dev, useraddr);
2853 break;
2854 case ETHTOOL_SPAUSEPARAM:
2855 rc = ethtool_set_pauseparam(dev, useraddr);
2856 break;
1da177e4
LT		 2857 case ETHTOOL_TEST:
2858 rc = ethtool_self_test(dev, useraddr);
2859 break;
2860 case ETHTOOL_GSTRINGS:
2861 rc = ethtool_get_strings(dev, useraddr);
2862 break;
2863 case ETHTOOL_PHYS_ID:
2864 rc = ethtool_phys_id(dev, useraddr);
2865 break;
2866 case ETHTOOL_GSTATS:
2867 rc = ethtool_get_stats(dev, useraddr);
2868 break;
a6f9a705
JW		 2869 case ETHTOOL_GPERMADDR:
2870 rc = ethtool_get_perm_addr(dev, useraddr);
2871 break;
3ae7c0b2 2872 case ETHTOOL_GFLAGS:
13c99b24 2873 rc = ethtool_get_value(dev, useraddr, ethcmd,
bc5787c6 2874 __ethtool_get_flags);
3ae7c0b2
JG		 2875 break;
2876 case ETHTOOL_SFLAGS:
da8ac86c 2877 rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags);
3ae7c0b2 2878 break;
339bf024 2879 case ETHTOOL_GPFLAGS:
13c99b24
JG		 2880 rc = ethtool_get_value(dev, useraddr, ethcmd,
2881 dev->ethtool_ops->get_priv_flags);
111dcba3
MK		 2882 if (!rc)
2883 ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL);
339bf024
JG		 2884 break;
2885 case ETHTOOL_SPFLAGS:
13c99b24
JG		 2886 rc = ethtool_set_value(dev, useraddr,
2887 dev->ethtool_ops->set_priv_flags);
339bf024 2888 break;
0853ad66 2889 case ETHTOOL_GRXFH:
59089d8d
SB		 2890 case ETHTOOL_GRXRINGS:
2891 case ETHTOOL_GRXCLSRLCNT:
2892 case ETHTOOL_GRXCLSRULE:
2893 case ETHTOOL_GRXCLSRLALL:
bf988435 2894 rc = ethtool_get_rxnfc(dev, ethcmd, useraddr);
0853ad66
SB		 2895 break;
2896 case ETHTOOL_SRXFH:
59089d8d
SB		 2897 case ETHTOOL_SRXCLSRLDEL:
2898 case ETHTOOL_SRXCLSRLINS:
bf988435 2899 rc = ethtool_set_rxnfc(dev, ethcmd, useraddr);
0853ad66 2900 break;
05c6a8d7 2901 case ETHTOOL_FLASHDEV:
095cfcfe 2902 rc = ethtool_flash_device(dev, devlink_state);
05c6a8d7 2903 break;
d73d3a8c
BH		 2904 case ETHTOOL_RESET:
2905 rc = ethtool_reset(dev, useraddr);
2906 break;
723b2f57
JG		 2907 case ETHTOOL_GSSET_INFO:
2908 rc = ethtool_get_sset_info(dev, useraddr);
2909 break;
a5b6ee29
BH		 2910 case ETHTOOL_GRXFHINDIR:
2911 rc = ethtool_get_rxfh_indir(dev, useraddr);
2912 break;
2913 case ETHTOOL_SRXFHINDIR:
2914 rc = ethtool_set_rxfh_indir(dev, useraddr);
2915 break;
3de0b592
VD		 2916 case ETHTOOL_GRSSH:
2917 rc = ethtool_get_rxfh(dev, useraddr);
2918 break;
2919 case ETHTOOL_SRSSH:
2920 rc = ethtool_set_rxfh(dev, useraddr);
2921 break;
5455c699
MM		 2922 case ETHTOOL_GFEATURES:
2923 rc = ethtool_get_features(dev, useraddr);
2924 break;
2925 case ETHTOOL_SFEATURES:
2926 rc = ethtool_set_features(dev, useraddr);
2927 break;
0a417704 2928 case ETHTOOL_GTXCSUM:
e83d360d 2929 case ETHTOOL_GRXCSUM:
0a417704
MM		 2930 case ETHTOOL_GSG:
2931 case ETHTOOL_GTSO:
0a417704
MM		 2932 case ETHTOOL_GGSO:
2933 case ETHTOOL_GGRO:
2934 rc = ethtool_get_one_feature(dev, useraddr, ethcmd);
2935 break;
2936 case ETHTOOL_STXCSUM:
e83d360d 2937 case ETHTOOL_SRXCSUM:
0a417704
MM		 2938 case ETHTOOL_SSG:
2939 case ETHTOOL_STSO:
0a417704
MM		 2940 case ETHTOOL_SGSO:
2941 case ETHTOOL_SGRO:
2942 rc = ethtool_set_one_feature(dev, useraddr, ethcmd);
2943 break;
8b5933c3 2944 case ETHTOOL_GCHANNELS:
2945 rc = ethtool_get_channels(dev, useraddr);
2946 break;
2947 case ETHTOOL_SCHANNELS:
2948 rc = ethtool_set_channels(dev, useraddr);
2949 break;
29dd54b7
AC		 2950 case ETHTOOL_SET_DUMP:
2951 rc = ethtool_set_dump(dev, useraddr);
2952 break;
2953 case ETHTOOL_GET_DUMP_FLAG:
2954 rc = ethtool_get_dump_flag(dev, useraddr);
2955 break;
2956 case ETHTOOL_GET_DUMP_DATA:
2957 rc = ethtool_get_dump_data(dev, useraddr);
2958 break;
c8f3a8c3
RC		 2959 case ETHTOOL_GET_TS_INFO:
2960 rc = ethtool_get_ts_info(dev, useraddr);
2961 break;
41c3cb6d
SH		 2962 case ETHTOOL_GMODULEINFO:
2963 rc = ethtool_get_module_info(dev, useraddr);
2964 break;
2965 case ETHTOOL_GMODULEEEPROM:
2966 rc = ethtool_get_module_eeprom(dev, useraddr);
2967 break;
f0db9b07
GV		 2968 case ETHTOOL_GTUNABLE:
2969 rc = ethtool_get_tunable(dev, useraddr);
2970 break;
2971 case ETHTOOL_STUNABLE:
2972 rc = ethtool_set_tunable(dev, useraddr);
2973 break;
f3a40945
AL		 2974 case ETHTOOL_GPHYSTATS:
2975 rc = ethtool_get_phy_stats(dev, useraddr);
2976 break;
ac2c7ad0 2977 case ETHTOOL_PERQUEUE:
58f5bbe3 2978 rc = ethtool_set_per_queue(dev, useraddr, sub_cmd);
ac2c7ad0 2979 break;
3f1ac7a7
DD		 2980 case ETHTOOL_GLINKSETTINGS:
2981 rc = ethtool_get_link_ksettings(dev, useraddr);
2982 break;
2983 case ETHTOOL_SLINKSETTINGS:
2984 rc = ethtool_set_link_ksettings(dev, useraddr);
2985 break;
968ad9da
RL		 2986 case ETHTOOL_PHY_GTUNABLE:
2987 rc = get_phy_tunable(dev, useraddr);
2988 break;
2989 case ETHTOOL_PHY_STUNABLE:
2990 rc = set_phy_tunable(dev, useraddr);
2991 break;
1a5f3da2
VSR		 2992 case ETHTOOL_GFECPARAM:
2993 rc = ethtool_get_fecparam(dev, useraddr);
2994 break;
2995 case ETHTOOL_SFECPARAM:
2996 rc = ethtool_set_fecparam(dev, useraddr);
2997 break;
1da177e4 2998 default:
61a44b9c 2999 rc = -EOPNOTSUPP;
1da177e4 3000 }
4ec93edb 3001
e71a4783 3002 if (dev->ethtool_ops->complete)
1da177e4 3003 dev->ethtool_ops->complete(dev);
d8a33ac4
SH		 3004
3005 if (old_features != dev->features)
3006 netdev_features_change(dev);
f32a2137
HK		 3007out:
3008 if (dev->dev.parent)
3009 pm_runtime_put(dev->dev.parent);
d8a33ac4 3010
1da177e4 3011 return rc;
1da177e4 3012}
eca4205f 3013
f49deaa6
JK		 3014int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr)
3015{
095cfcfe
JK		 3016 struct ethtool_devlink_compat *state;
3017 u32 ethcmd;
f49deaa6
JK		 3018 int rc;
3019
095cfcfe
JK		 3020 if (copy_from_user(&ethcmd, useraddr, sizeof(ethcmd)))
3021 return -EFAULT;
3022
3023 state = kzalloc(sizeof(*state), GFP_KERNEL);
3024 if (!state)
3025 return -ENOMEM;
3026
3027 switch (ethcmd) {
3028 case ETHTOOL_FLASHDEV:
3029 if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) {
3030 rc = -EFAULT;
3031 goto exit_free;
3032 }
3033 state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0;
3034 break;
3035 }
3036
f49deaa6 3037 rtnl_lock();
095cfcfe 3038 rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state);
f49deaa6 3039 rtnl_unlock();
095cfcfe
JK		 3040 if (rc)
3041 goto exit_free;
3042
3043 switch (ethcmd) {
1af0a094
JK		 3044 case ETHTOOL_FLASHDEV:
3045 if (state->devlink)
3046 rc = devlink_compat_flash_update(state->devlink,
3047 state->efl.data);
3048 break;
095cfcfe 3049 case ETHTOOL_GDRVINFO:
1af0a094
JK		 3050 if (state->devlink)
3051 devlink_compat_running_version(state->devlink,
3052 state->info.fw_version,
3053 sizeof(state->info.fw_version));
095cfcfe
JK		 3054 if (copy_to_user(useraddr, &state->info, sizeof(state->info))) {
3055 rc = -EFAULT;
3056 goto exit_free;
3057 }
3058 break;
3059 }
f49deaa6 3060
095cfcfe 3061exit_free:
1af0a094
JK		 3062 if (state->devlink)
3063 devlink_put(state->devlink);
095cfcfe 3064 kfree(state);
f49deaa6
JK		 3065 return rc;
3066}
3067
eca4205f
PNA		 3068struct ethtool_rx_flow_key {
3069 struct flow_dissector_key_basic basic;
3070 union {
3071 struct flow_dissector_key_ipv4_addrs ipv4;
3072 struct flow_dissector_key_ipv6_addrs ipv6;
3073 };
3074 struct flow_dissector_key_ports tp;
3075 struct flow_dissector_key_ip ip;
3076 struct flow_dissector_key_vlan vlan;
3077 struct flow_dissector_key_eth_addrs eth_addrs;
3078} __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */
3079
3080struct ethtool_rx_flow_match {
3081 struct flow_dissector dissector;
3082 struct ethtool_rx_flow_key key;
3083 struct ethtool_rx_flow_key mask;
3084};
3085
3086struct ethtool_rx_flow_rule *
3087ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input)
3088{
3089 const struct ethtool_rx_flow_spec *fs = input->fs;
3090 static struct in6_addr zero_addr = {};
3091 struct ethtool_rx_flow_match *match;
3092 struct ethtool_rx_flow_rule *flow;
3093 struct flow_action_entry *act;
3094
3095 flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) +
3096 sizeof(struct ethtool_rx_flow_match), GFP_KERNEL);
3097 if (!flow)
3098 return ERR_PTR(-ENOMEM);
3099
3100 /* ethtool_rx supports only one single action per rule. */
3101 flow->rule = flow_rule_alloc(1);
3102 if (!flow->rule) {
3103 kfree(flow);
3104 return ERR_PTR(-ENOMEM);
3105 }
3106
3107 match = (struct ethtool_rx_flow_match *)flow->priv;
3108 flow->rule->match.dissector = &match->dissector;
3109 flow->rule->match.mask = &match->mask;
3110 flow->rule->match.key = &match->key;
3111
3112 match->mask.basic.n_proto = htons(0xffff);
3113
3114 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
5b9469a2
MC		 3115 case ETHER_FLOW: {
3116 const struct ethhdr *ether_spec, *ether_m_spec;
3117
3118 ether_spec = &fs->h_u.ether_spec;
3119 ether_m_spec = &fs->m_u.ether_spec;
3120
3121 if (!is_zero_ether_addr(ether_m_spec->h_source)) {
3122 ether_addr_copy(match->key.eth_addrs.src,
3123 ether_spec->h_source);
3124 ether_addr_copy(match->mask.eth_addrs.src,
3125 ether_m_spec->h_source);
3126 }
3127 if (!is_zero_ether_addr(ether_m_spec->h_dest)) {
3128 ether_addr_copy(match->key.eth_addrs.dst,
3129 ether_spec->h_dest);
3130 ether_addr_copy(match->mask.eth_addrs.dst,
3131 ether_m_spec->h_dest);
3132 }
3133 if (ether_m_spec->h_proto) {
3134 match->key.basic.n_proto = ether_spec->h_proto;
3135 match->mask.basic.n_proto = ether_m_spec->h_proto;
3136 }
3137 }
3138 break;
eca4205f
PNA		 3139 case TCP_V4_FLOW:
3140 case UDP_V4_FLOW: {
3141 const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec;
3142
3143 match->key.basic.n_proto = htons(ETH_P_IP);
3144
3145 v4_spec = &fs->h_u.tcp_ip4_spec;
3146 v4_m_spec = &fs->m_u.tcp_ip4_spec;
3147
3148 if (v4_m_spec->ip4src) {
3149 match->key.ipv4.src = v4_spec->ip4src;
3150 match->mask.ipv4.src = v4_m_spec->ip4src;
3151 }
3152 if (v4_m_spec->ip4dst) {
3153 match->key.ipv4.dst = v4_spec->ip4dst;
3154 match->mask.ipv4.dst = v4_m_spec->ip4dst;
3155 }
3156 if (v4_m_spec->ip4src ||
3157 v4_m_spec->ip4dst) {
3158 match->dissector.used_keys |=
3159 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS);
3160 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] =
3161 offsetof(struct ethtool_rx_flow_key, ipv4);
3162 }
3163 if (v4_m_spec->psrc) {
3164 match->key.tp.src = v4_spec->psrc;
3165 match->mask.tp.src = v4_m_spec->psrc;
3166 }
3167 if (v4_m_spec->pdst) {
3168 match->key.tp.dst = v4_spec->pdst;
3169 match->mask.tp.dst = v4_m_spec->pdst;
3170 }
3171 if (v4_m_spec->psrc ||
3172 v4_m_spec->pdst) {
3173 match->dissector.used_keys |=
3174 BIT(FLOW_DISSECTOR_KEY_PORTS);
3175 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3176 offsetof(struct ethtool_rx_flow_key, tp);
3177 }
3178 if (v4_m_spec->tos) {
3179 match->key.ip.tos = v4_spec->tos;
3180 match->mask.ip.tos = v4_m_spec->tos;
3181 match->dissector.used_keys |=
3182 BIT(FLOW_DISSECTOR_KEY_IP);
3183 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3184 offsetof(struct ethtool_rx_flow_key, ip);
3185 }
3186 }
3187 break;
3188 case TCP_V6_FLOW:
3189 case UDP_V6_FLOW: {
3190 const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec;
3191
3192 match->key.basic.n_proto = htons(ETH_P_IPV6);
3193
3194 v6_spec = &fs->h_u.tcp_ip6_spec;
3195 v6_m_spec = &fs->m_u.tcp_ip6_spec;
3196 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr))) {
3197 memcpy(&match->key.ipv6.src, v6_spec->ip6src,
3198 sizeof(match->key.ipv6.src));
3199 memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src,
3200 sizeof(match->mask.ipv6.src));
3201 }
3202 if (memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
3203 memcpy(&match->key.ipv6.dst, v6_spec->ip6dst,
3204 sizeof(match->key.ipv6.dst));
3205 memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst,
3206 sizeof(match->mask.ipv6.dst));
3207 }
3208 if (memcmp(v6_m_spec->ip6src, &zero_addr, sizeof(zero_addr)) ||
21a739c6 3209 memcmp(v6_m_spec->ip6dst, &zero_addr, sizeof(zero_addr))) {
eca4205f
PNA		 3210 match->dissector.used_keys |=
3211 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS);
3212 match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] =
3213 offsetof(struct ethtool_rx_flow_key, ipv6);
3214 }
3215 if (v6_m_spec->psrc) {
3216 match->key.tp.src = v6_spec->psrc;
3217 match->mask.tp.src = v6_m_spec->psrc;
3218 }
3219 if (v6_m_spec->pdst) {
3220 match->key.tp.dst = v6_spec->pdst;
3221 match->mask.tp.dst = v6_m_spec->pdst;
3222 }
3223 if (v6_m_spec->psrc ||
3224 v6_m_spec->pdst) {
3225 match->dissector.used_keys |=
3226 BIT(FLOW_DISSECTOR_KEY_PORTS);
3227 match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] =
3228 offsetof(struct ethtool_rx_flow_key, tp);
3229 }
3230 if (v6_m_spec->tclass) {
3231 match->key.ip.tos = v6_spec->tclass;
3232 match->mask.ip.tos = v6_m_spec->tclass;
3233 match->dissector.used_keys |=
3234 BIT(FLOW_DISSECTOR_KEY_IP);
3235 match->dissector.offset[FLOW_DISSECTOR_KEY_IP] =
3236 offsetof(struct ethtool_rx_flow_key, ip);
3237 }
3238 }
3239 break;
3240 default:
3241 ethtool_rx_flow_rule_destroy(flow);
3242 return ERR_PTR(-EINVAL);
3243 }
3244
3245 switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) {
3246 case TCP_V4_FLOW:
3247 case TCP_V6_FLOW:
3248 match->key.basic.ip_proto = IPPROTO_TCP;
d0a84e1f 3249 match->mask.basic.ip_proto = 0xff;
eca4205f
PNA		 3250 break;
3251 case UDP_V4_FLOW:
3252 case UDP_V6_FLOW:
3253 match->key.basic.ip_proto = IPPROTO_UDP;
d0a84e1f 3254 match->mask.basic.ip_proto = 0xff;
eca4205f
PNA		 3255 break;
3256 }
eca4205f
PNA		 3257
3258 match->dissector.used_keys |= BIT(FLOW_DISSECTOR_KEY_BASIC);
3259 match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] =
3260 offsetof(struct ethtool_rx_flow_key, basic);
3261
3262 if (fs->flow_type & FLOW_EXT) {
3263 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3264 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3265
b73484b2 3266 if (ext_m_spec->vlan_etype) {
eca4205f
PNA		 3267 match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype;
3268 match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype;
b73484b2 3269 }
eca4205f 3270
b73484b2 3271 if (ext_m_spec->vlan_tci) {
eca4205f
PNA		 3272 match->key.vlan.vlan_id =
3273 ntohs(ext_h_spec->vlan_tci) & 0x0fff;
3274 match->mask.vlan.vlan_id =
3275 ntohs(ext_m_spec->vlan_tci) & 0x0fff;
3276
f0d2ca15
MC		 3277 match->key.vlan.vlan_dei =
3278 !!(ext_h_spec->vlan_tci & htons(0x1000));
3279 match->mask.vlan.vlan_dei =
3280 !!(ext_m_spec->vlan_tci & htons(0x1000));
3281
eca4205f
PNA		 3282 match->key.vlan.vlan_priority =
3283 (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13;
3284 match->mask.vlan.vlan_priority =
3285 (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13;
b73484b2 3286 }
eca4205f 3287
b73484b2
MC		 3288 if (ext_m_spec->vlan_etype ||
3289 ext_m_spec->vlan_tci) {
eca4205f
PNA		 3290 match->dissector.used_keys |=
3291 BIT(FLOW_DISSECTOR_KEY_VLAN);
3292 match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] =
3293 offsetof(struct ethtool_rx_flow_key, vlan);
3294 }
3295 }
3296 if (fs->flow_type & FLOW_MAC_EXT) {
3297 const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext;
3298 const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext;
3299
8b34ec65
NC		 3300 memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest,
3301 ETH_ALEN);
3302 memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest,
3303 ETH_ALEN);
3304
3305 match->dissector.used_keys |=
3306 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS);
3307 match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] =
3308 offsetof(struct ethtool_rx_flow_key, eth_addrs);
eca4205f
PNA		 3309 }
3310
3311 act = &flow->rule->action.entries[0];
3312 switch (fs->ring_cookie) {
3313 case RX_CLS_FLOW_DISC:
3314 act->id = FLOW_ACTION_DROP;
3315 break;
3316 case RX_CLS_FLOW_WAKE:
3317 act->id = FLOW_ACTION_WAKE;
3318 break;
3319 default:
3320 act->id = FLOW_ACTION_QUEUE;
3321 if (fs->flow_type & FLOW_RSS)
3322 act->queue.ctx = input->rss_ctx;
3323
3324 act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie);
3325 act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie);
3326 break;
3327 }
3328
3329 return flow;
3330}
3331EXPORT_SYMBOL(ethtool_rx_flow_rule_create);
3332
3333void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow)
3334{
3335 kfree(flow->rule);
3336 kfree(flow);
3337}
3338EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy);
Linux 6.x block layer and io_uring tree(s)