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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * net/core/ethtool.c - Ethtool ioctl handler | |
4 | * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx> | |
5 | * | |
6 | * This file is where we call all the ethtool_ops commands to get | |
61a44b9c | 7 | * the information ethtool needs. |
1da177e4 LT |
8 | */ |
9 | ||
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> |
d2efeb52 | 29 | #include <linux/utsname.h> |
ddb6e99e | 30 | #include <net/devlink.h> |
8cdc3223 | 31 | #include <net/ipv6.h> |
a71506a4 | 32 | #include <net/xdp_sock_drv.h> |
eca4205f | 33 | #include <net/flow_offload.h> |
73286734 | 34 | #include <linux/ethtool_netlink.h> |
d44e1310 MK |
35 | #include "common.h" |
36 | ||
095cfcfe JK |
37 | /* State held across locks and calls for commands which have devlink fallback */ |
38 | struct ethtool_devlink_compat { | |
1af0a094 | 39 | struct devlink *devlink; |
095cfcfe JK |
40 | union { |
41 | struct ethtool_flash efl; | |
42 | struct ethtool_drvinfo info; | |
43 | }; | |
44 | }; | |
45 | ||
1af0a094 JK |
46 | static struct devlink *netdev_to_devlink_get(struct net_device *dev) |
47 | { | |
8eba37f7 | 48 | if (!dev->devlink_port) |
1af0a094 | 49 | return NULL; |
8eba37f7 | 50 | return devlink_try_get(dev->devlink_port->devlink); |
1af0a094 JK |
51 | } |
52 | ||
4ec93edb | 53 | /* |
1da177e4 LT |
54 | * Some useful ethtool_ops methods that're device independent. |
55 | * If we find that all drivers want to do the same thing here, | |
56 | * we can turn these into dev_() function calls. | |
57 | */ | |
58 | ||
59 | u32 ethtool_op_get_link(struct net_device *dev) | |
60 | { | |
facd15df JB |
61 | /* Synchronize carrier state with link watch, see also rtnl_getlink() */ |
62 | linkwatch_sync_dev(dev); | |
63 | ||
1da177e4 LT |
64 | return netif_carrier_ok(dev) ? 1 : 0; |
65 | } | |
97f8aefb | 66 | EXPORT_SYMBOL(ethtool_op_get_link); |
1da177e4 | 67 | |
2111375b KM |
68 | int ethtool_op_get_ts_info(struct net_device *dev, |
69 | struct kernel_ethtool_ts_info *info) | |
02eacbd0 RC |
70 | { |
71 | info->so_timestamping = | |
72 | SOF_TIMESTAMPING_TX_SOFTWARE | | |
73 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
74 | SOF_TIMESTAMPING_SOFTWARE; | |
75 | info->phc_index = -1; | |
76 | return 0; | |
77 | } | |
78 | EXPORT_SYMBOL(ethtool_op_get_ts_info); | |
79 | ||
1da177e4 LT |
80 | /* Handlers for each ethtool command */ |
81 | ||
5455c699 MM |
82 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
83 | { | |
84 | struct ethtool_gfeatures cmd = { | |
85 | .cmd = ETHTOOL_GFEATURES, | |
86 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
87 | }; | |
475414f6 | 88 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
5455c699 MM |
89 | u32 __user *sizeaddr; |
90 | u32 copy_size; | |
475414f6 MM |
91 | int i; |
92 | ||
93 | /* in case feature bits run out again */ | |
09da71b1 | 94 | BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
475414f6 MM |
95 | |
96 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { | |
09da71b1 MM |
97 | features[i].available = (u32)(dev->hw_features >> (32 * i)); |
98 | features[i].requested = (u32)(dev->wanted_features >> (32 * i)); | |
99 | features[i].active = (u32)(dev->features >> (32 * i)); | |
100 | features[i].never_changed = | |
101 | (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); | |
475414f6 | 102 | } |
5455c699 MM |
103 | |
104 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); | |
105 | if (get_user(copy_size, sizeaddr)) | |
106 | return -EFAULT; | |
107 | ||
108 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
109 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
110 | ||
111 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
112 | return -EFAULT; | |
113 | useraddr += sizeof(cmd); | |
ed717613 GS |
114 | if (copy_to_user(useraddr, features, |
115 | array_size(copy_size, sizeof(*features)))) | |
5455c699 MM |
116 | return -EFAULT; |
117 | ||
118 | return 0; | |
119 | } | |
120 | ||
121 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
122 | { | |
123 | struct ethtool_sfeatures cmd; | |
124 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
475414f6 MM |
125 | netdev_features_t wanted = 0, valid = 0; |
126 | int i, ret = 0; | |
5455c699 MM |
127 | |
128 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
129 | return -EFAULT; | |
130 | useraddr += sizeof(cmd); | |
131 | ||
132 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
133 | return -EINVAL; | |
134 | ||
135 | if (copy_from_user(features, useraddr, sizeof(features))) | |
136 | return -EFAULT; | |
137 | ||
475414f6 | 138 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
09da71b1 MM |
139 | valid |= (netdev_features_t)features[i].valid << (32 * i); |
140 | wanted |= (netdev_features_t)features[i].requested << (32 * i); | |
475414f6 MM |
141 | } |
142 | ||
143 | if (valid & ~NETIF_F_ETHTOOL_BITS) | |
5455c699 MM |
144 | return -EINVAL; |
145 | ||
475414f6 MM |
146 | if (valid & ~dev->hw_features) { |
147 | valid &= dev->hw_features; | |
5455c699 MM |
148 | ret |= ETHTOOL_F_UNSUPPORTED; |
149 | } | |
150 | ||
475414f6 MM |
151 | dev->wanted_features &= ~valid; |
152 | dev->wanted_features |= wanted & valid; | |
6cb6a27c | 153 | __netdev_update_features(dev); |
5455c699 | 154 | |
475414f6 | 155 | if ((dev->wanted_features ^ dev->features) & valid) |
5455c699 MM |
156 | ret |= ETHTOOL_F_WISH; |
157 | ||
158 | return ret; | |
159 | } | |
160 | ||
340ae165 MM |
161 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
162 | { | |
17809516 | 163 | const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; |
340ae165 MM |
164 | const struct ethtool_ops *ops = dev->ethtool_ops; |
165 | ||
5455c699 MM |
166 | if (sset == ETH_SS_FEATURES) |
167 | return ARRAY_SIZE(netdev_features_strings); | |
168 | ||
892311f6 EP |
169 | if (sset == ETH_SS_RSS_HASH_FUNCS) |
170 | return ARRAY_SIZE(rss_hash_func_strings); | |
171 | ||
a4244b0c HHZ |
172 | if (sset == ETH_SS_TUNABLES) |
173 | return ARRAY_SIZE(tunable_strings); | |
174 | ||
968ad9da RL |
175 | if (sset == ETH_SS_PHY_TUNABLES) |
176 | return ARRAY_SIZE(phy_tunable_strings); | |
177 | ||
99943382 | 178 | if (sset == ETH_SS_PHY_STATS && dev->phydev && |
17809516 FF |
179 | !ops->get_ethtool_phy_stats && |
180 | phy_ops && phy_ops->get_sset_count) | |
181 | return phy_ops->get_sset_count(dev->phydev); | |
f3a40945 | 182 | |
428c122f MK |
183 | if (sset == ETH_SS_LINK_MODES) |
184 | return __ETHTOOL_LINK_MODE_MASK_NBITS; | |
185 | ||
c03a14e8 | 186 | if (ops->get_sset_count && ops->get_strings) |
340ae165 MM |
187 | return ops->get_sset_count(dev, sset); |
188 | else | |
189 | return -EOPNOTSUPP; | |
190 | } | |
191 | ||
192 | static void __ethtool_get_strings(struct net_device *dev, | |
193 | u32 stringset, u8 *data) | |
194 | { | |
17809516 | 195 | const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; |
340ae165 MM |
196 | const struct ethtool_ops *ops = dev->ethtool_ops; |
197 | ||
5455c699 MM |
198 | if (stringset == ETH_SS_FEATURES) |
199 | memcpy(data, netdev_features_strings, | |
200 | sizeof(netdev_features_strings)); | |
892311f6 EP |
201 | else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
202 | memcpy(data, rss_hash_func_strings, | |
203 | sizeof(rss_hash_func_strings)); | |
a4244b0c HHZ |
204 | else if (stringset == ETH_SS_TUNABLES) |
205 | memcpy(data, tunable_strings, sizeof(tunable_strings)); | |
968ad9da RL |
206 | else if (stringset == ETH_SS_PHY_TUNABLES) |
207 | memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); | |
99943382 | 208 | else if (stringset == ETH_SS_PHY_STATS && dev->phydev && |
17809516 FF |
209 | !ops->get_ethtool_phy_stats && phy_ops && |
210 | phy_ops->get_strings) | |
211 | phy_ops->get_strings(dev->phydev, data); | |
428c122f MK |
212 | else if (stringset == ETH_SS_LINK_MODES) |
213 | memcpy(data, link_mode_names, | |
214 | __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); | |
99943382 | 215 | else |
5455c699 MM |
216 | /* ops->get_strings is valid because checked earlier */ |
217 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
218 | } |
219 | ||
c8f44aff | 220 | static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
0a417704 MM |
221 | { |
222 | /* feature masks of legacy discrete ethtool ops */ | |
223 | ||
224 | switch (eth_cmd) { | |
225 | case ETHTOOL_GTXCSUM: | |
226 | case ETHTOOL_STXCSUM: | |
9d648fb5 | 227 | return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | |
f70bb065 | 228 | NETIF_F_SCTP_CRC; |
e83d360d MM |
229 | case ETHTOOL_GRXCSUM: |
230 | case ETHTOOL_SRXCSUM: | |
231 | return NETIF_F_RXCSUM; | |
0a417704 MM |
232 | case ETHTOOL_GSG: |
233 | case ETHTOOL_SSG: | |
f70bb065 | 234 | return NETIF_F_SG | NETIF_F_FRAGLIST; |
0a417704 MM |
235 | case ETHTOOL_GTSO: |
236 | case ETHTOOL_STSO: | |
237 | return NETIF_F_ALL_TSO; | |
0a417704 MM |
238 | case ETHTOOL_GGSO: |
239 | case ETHTOOL_SGSO: | |
240 | return NETIF_F_GSO; | |
241 | case ETHTOOL_GGRO: | |
242 | case ETHTOOL_SGRO: | |
243 | return NETIF_F_GRO; | |
244 | default: | |
245 | BUG(); | |
246 | } | |
247 | } | |
248 | ||
0a417704 MM |
249 | static int ethtool_get_one_feature(struct net_device *dev, |
250 | char __user *useraddr, u32 ethcmd) | |
251 | { | |
c8f44aff | 252 | netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
253 | struct ethtool_value edata = { |
254 | .cmd = ethcmd, | |
86794881 | 255 | .data = !!(dev->features & mask), |
0a417704 | 256 | }; |
0a417704 | 257 | |
0a417704 MM |
258 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
259 | return -EFAULT; | |
260 | return 0; | |
261 | } | |
262 | ||
0a417704 MM |
263 | static int ethtool_set_one_feature(struct net_device *dev, |
264 | void __user *useraddr, u32 ethcmd) | |
265 | { | |
266 | struct ethtool_value edata; | |
c8f44aff | 267 | netdev_features_t mask; |
0a417704 MM |
268 | |
269 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
270 | return -EFAULT; | |
271 | ||
86794881 MM |
272 | mask = ethtool_get_feature_mask(ethcmd); |
273 | mask &= dev->hw_features; | |
bc5787c6 MM |
274 | if (!mask) |
275 | return -EOPNOTSUPP; | |
86794881 | 276 | |
bc5787c6 MM |
277 | if (edata.data) |
278 | dev->wanted_features |= mask; | |
279 | else | |
280 | dev->wanted_features &= ~mask; | |
86794881 | 281 | |
bc5787c6 | 282 | __netdev_update_features(dev); |
86794881 | 283 | |
bc5787c6 MM |
284 | return 0; |
285 | } | |
286 | ||
02b3a552 MM |
287 | #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
288 | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) | |
f646968f PM |
289 | #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
290 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ | |
291 | NETIF_F_RXHASH) | |
bc5787c6 MM |
292 | |
293 | static u32 __ethtool_get_flags(struct net_device *dev) | |
294 | { | |
02b3a552 MM |
295 | u32 flags = 0; |
296 | ||
8a73125c DF |
297 | if (dev->features & NETIF_F_LRO) |
298 | flags |= ETH_FLAG_LRO; | |
299 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
300 | flags |= ETH_FLAG_RXVLAN; | |
301 | if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) | |
302 | flags |= ETH_FLAG_TXVLAN; | |
303 | if (dev->features & NETIF_F_NTUPLE) | |
304 | flags |= ETH_FLAG_NTUPLE; | |
305 | if (dev->features & NETIF_F_RXHASH) | |
306 | flags |= ETH_FLAG_RXHASH; | |
02b3a552 MM |
307 | |
308 | return flags; | |
0a417704 MM |
309 | } |
310 | ||
bc5787c6 | 311 | static int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c | 312 | { |
c8f44aff | 313 | netdev_features_t features = 0, changed; |
da8ac86c | 314 | |
02b3a552 | 315 | if (data & ~ETH_ALL_FLAGS) |
da8ac86c MM |
316 | return -EINVAL; |
317 | ||
8a73125c DF |
318 | if (data & ETH_FLAG_LRO) |
319 | features |= NETIF_F_LRO; | |
320 | if (data & ETH_FLAG_RXVLAN) | |
321 | features |= NETIF_F_HW_VLAN_CTAG_RX; | |
322 | if (data & ETH_FLAG_TXVLAN) | |
323 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
324 | if (data & ETH_FLAG_NTUPLE) | |
325 | features |= NETIF_F_NTUPLE; | |
326 | if (data & ETH_FLAG_RXHASH) | |
327 | features |= NETIF_F_RXHASH; | |
02b3a552 | 328 | |
da8ac86c | 329 | /* allow changing only bits set in hw_features */ |
02b3a552 | 330 | changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
da8ac86c MM |
331 | if (changed & ~dev->hw_features) |
332 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
333 | ||
334 | dev->wanted_features = | |
02b3a552 | 335 | (dev->wanted_features & ~changed) | (features & changed); |
da8ac86c | 336 | |
6cb6a27c | 337 | __netdev_update_features(dev); |
da8ac86c MM |
338 | |
339 | return 0; | |
340 | } | |
341 | ||
5a6cd6de AB |
342 | /* Given two link masks, AND them together and save the result in dst. */ |
343 | void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, | |
344 | struct ethtool_link_ksettings *src) | |
345 | { | |
346 | unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); | |
347 | unsigned int idx = 0; | |
348 | ||
349 | for (; idx < size; idx++) { | |
350 | dst->link_modes.supported[idx] &= | |
351 | src->link_modes.supported[idx]; | |
352 | dst->link_modes.advertising[idx] &= | |
353 | src->link_modes.advertising[idx]; | |
354 | } | |
355 | } | |
356 | EXPORT_SYMBOL(ethtool_intersect_link_masks); | |
357 | ||
6d62b4d5 PR |
358 | void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, |
359 | u32 legacy_u32) | |
3f1ac7a7 | 360 | { |
4973056c | 361 | linkmode_zero(dst); |
3f1ac7a7 DD |
362 | dst[0] = legacy_u32; |
363 | } | |
6d62b4d5 | 364 | EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); |
3f1ac7a7 DD |
365 | |
366 | /* return false if src had higher bits set. lower bits always updated. */ | |
6d62b4d5 PR |
367 | bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, |
368 | const unsigned long *src) | |
3f1ac7a7 | 369 | { |
3f1ac7a7 | 370 | *legacy_u32 = src[0]; |
19d62f5e MB |
371 | return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == |
372 | __ETHTOOL_LINK_MODE_MASK_NBITS; | |
3f1ac7a7 | 373 | } |
6d62b4d5 | 374 | EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
3f1ac7a7 | 375 | |
3f1ac7a7 DD |
376 | /* return false if ksettings link modes had higher bits |
377 | * set. legacy_settings always updated (best effort) | |
378 | */ | |
379 | static bool | |
380 | convert_link_ksettings_to_legacy_settings( | |
381 | struct ethtool_cmd *legacy_settings, | |
382 | const struct ethtool_link_ksettings *link_ksettings) | |
383 | { | |
384 | bool retval = true; | |
385 | ||
386 | memset(legacy_settings, 0, sizeof(*legacy_settings)); | |
387 | /* this also clears the deprecated fields in legacy structure: | |
388 | * __u8 transceiver; | |
389 | * __u32 maxtxpkt; | |
390 | * __u32 maxrxpkt; | |
391 | */ | |
392 | ||
6d62b4d5 | 393 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
394 | &legacy_settings->supported, |
395 | link_ksettings->link_modes.supported); | |
6d62b4d5 | 396 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
397 | &legacy_settings->advertising, |
398 | link_ksettings->link_modes.advertising); | |
6d62b4d5 | 399 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
400 | &legacy_settings->lp_advertising, |
401 | link_ksettings->link_modes.lp_advertising); | |
402 | ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); | |
403 | legacy_settings->duplex | |
404 | = link_ksettings->base.duplex; | |
405 | legacy_settings->port | |
406 | = link_ksettings->base.port; | |
407 | legacy_settings->phy_address | |
408 | = link_ksettings->base.phy_address; | |
409 | legacy_settings->autoneg | |
410 | = link_ksettings->base.autoneg; | |
411 | legacy_settings->mdio_support | |
412 | = link_ksettings->base.mdio_support; | |
413 | legacy_settings->eth_tp_mdix | |
414 | = link_ksettings->base.eth_tp_mdix; | |
415 | legacy_settings->eth_tp_mdix_ctrl | |
416 | = link_ksettings->base.eth_tp_mdix_ctrl; | |
19cab887 FF |
417 | legacy_settings->transceiver |
418 | = link_ksettings->base.transceiver; | |
3f1ac7a7 DD |
419 | return retval; |
420 | } | |
421 | ||
422 | /* number of 32-bit words to store the user's link mode bitmaps */ | |
423 | #define __ETHTOOL_LINK_MODE_MASK_NU32 \ | |
424 | DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) | |
425 | ||
426 | /* layout of the struct passed from/to userland */ | |
427 | struct ethtool_link_usettings { | |
428 | struct ethtool_link_settings base; | |
429 | struct { | |
430 | __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
431 | __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
432 | __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
433 | } link_modes; | |
434 | }; | |
435 | ||
9b300495 | 436 | /* Internal kernel helper to query a device ethtool_link_settings. */ |
3f1ac7a7 DD |
437 | int __ethtool_get_link_ksettings(struct net_device *dev, |
438 | struct ethtool_link_ksettings *link_ksettings) | |
439 | { | |
3f1ac7a7 DD |
440 | ASSERT_RTNL(); |
441 | ||
9b300495 | 442 | if (!dev->ethtool_ops->get_link_ksettings) |
3237fc63 DD |
443 | return -EOPNOTSUPP; |
444 | ||
a699781c JB |
445 | if (!netif_device_present(dev)) |
446 | return -ENODEV; | |
447 | ||
9b300495 | 448 | memset(link_ksettings, 0, sizeof(*link_ksettings)); |
a975d7d8 | 449 | return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); |
3f1ac7a7 DD |
450 | } |
451 | EXPORT_SYMBOL(__ethtool_get_link_ksettings); | |
452 | ||
453 | /* convert ethtool_link_usettings in user space to a kernel internal | |
454 | * ethtool_link_ksettings. return 0 on success, errno on error. | |
455 | */ | |
456 | static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, | |
457 | const void __user *from) | |
458 | { | |
459 | struct ethtool_link_usettings link_usettings; | |
460 | ||
461 | if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) | |
462 | return -EFAULT; | |
463 | ||
464 | memcpy(&to->base, &link_usettings.base, sizeof(to->base)); | |
3aa56885 YN |
465 | bitmap_from_arr32(to->link_modes.supported, |
466 | link_usettings.link_modes.supported, | |
467 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
468 | bitmap_from_arr32(to->link_modes.advertising, | |
469 | link_usettings.link_modes.advertising, | |
470 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
471 | bitmap_from_arr32(to->link_modes.lp_advertising, | |
472 | link_usettings.link_modes.lp_advertising, | |
473 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
474 | |
475 | return 0; | |
476 | } | |
477 | ||
70ae1e12 CF |
478 | /* Check if the user is trying to change anything besides speed/duplex */ |
479 | bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) | |
480 | { | |
481 | struct ethtool_link_settings base2 = {}; | |
482 | ||
483 | base2.speed = cmd->base.speed; | |
484 | base2.port = PORT_OTHER; | |
485 | base2.duplex = cmd->base.duplex; | |
486 | base2.cmd = cmd->base.cmd; | |
487 | base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; | |
488 | ||
489 | return !memcmp(&base2, &cmd->base, sizeof(base2)) && | |
490 | bitmap_empty(cmd->link_modes.supported, | |
491 | __ETHTOOL_LINK_MODE_MASK_NBITS) && | |
492 | bitmap_empty(cmd->link_modes.lp_advertising, | |
493 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
494 | } | |
495 | ||
3f1ac7a7 DD |
496 | /* convert a kernel internal ethtool_link_ksettings to |
497 | * ethtool_link_usettings in user space. return 0 on success, errno on | |
498 | * error. | |
499 | */ | |
500 | static int | |
501 | store_link_ksettings_for_user(void __user *to, | |
502 | const struct ethtool_link_ksettings *from) | |
503 | { | |
504 | struct ethtool_link_usettings link_usettings; | |
505 | ||
c1d9e34e | 506 | memcpy(&link_usettings, from, sizeof(link_usettings)); |
3aa56885 YN |
507 | bitmap_to_arr32(link_usettings.link_modes.supported, |
508 | from->link_modes.supported, | |
509 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
510 | bitmap_to_arr32(link_usettings.link_modes.advertising, | |
511 | from->link_modes.advertising, | |
512 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
513 | bitmap_to_arr32(link_usettings.link_modes.lp_advertising, | |
514 | from->link_modes.lp_advertising, | |
515 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
516 | |
517 | if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) | |
518 | return -EFAULT; | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
9b300495 | 523 | /* Query device for its ethtool_link_settings. */ |
3f1ac7a7 DD |
524 | static int ethtool_get_link_ksettings(struct net_device *dev, |
525 | void __user *useraddr) | |
526 | { | |
527 | int err = 0; | |
528 | struct ethtool_link_ksettings link_ksettings; | |
529 | ||
530 | ASSERT_RTNL(); | |
3f1ac7a7 DD |
531 | if (!dev->ethtool_ops->get_link_ksettings) |
532 | return -EOPNOTSUPP; | |
533 | ||
534 | /* handle bitmap nbits handshake */ | |
535 | if (copy_from_user(&link_ksettings.base, useraddr, | |
536 | sizeof(link_ksettings.base))) | |
537 | return -EFAULT; | |
538 | ||
539 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
540 | != link_ksettings.base.link_mode_masks_nwords) { | |
541 | /* wrong link mode nbits requested */ | |
542 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
793cf87d | 543 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
3f1ac7a7 DD |
544 | /* send back number of words required as negative val */ |
545 | compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, | |
546 | "need too many bits for link modes!"); | |
547 | link_ksettings.base.link_mode_masks_nwords | |
548 | = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); | |
549 | ||
550 | /* copy the base fields back to user, not the link | |
551 | * mode bitmaps | |
552 | */ | |
553 | if (copy_to_user(useraddr, &link_ksettings.base, | |
554 | sizeof(link_ksettings.base))) | |
555 | return -EFAULT; | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
560 | /* handshake successful: user/kernel agree on | |
561 | * link_mode_masks_nwords | |
562 | */ | |
563 | ||
564 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
565 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
566 | if (err < 0) | |
567 | return err; | |
568 | ||
569 | /* make sure we tell the right values to user */ | |
570 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; | |
571 | link_ksettings.base.link_mode_masks_nwords | |
572 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
bdbdac76 OR |
573 | link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; |
574 | link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; | |
0c3e10cb | 575 | link_ksettings.base.rate_matching = RATE_MATCH_NONE; |
3f1ac7a7 DD |
576 | |
577 | return store_link_ksettings_for_user(useraddr, &link_ksettings); | |
578 | } | |
579 | ||
9b300495 | 580 | /* Update device ethtool_link_settings. */ |
3f1ac7a7 DD |
581 | static int ethtool_set_link_ksettings(struct net_device *dev, |
582 | void __user *useraddr) | |
583 | { | |
9ad685db | 584 | struct ethtool_link_ksettings link_ksettings = {}; |
3f1ac7a7 | 585 | int err; |
3f1ac7a7 DD |
586 | |
587 | ASSERT_RTNL(); | |
588 | ||
589 | if (!dev->ethtool_ops->set_link_ksettings) | |
590 | return -EOPNOTSUPP; | |
591 | ||
592 | /* make sure nbits field has expected value */ | |
593 | if (copy_from_user(&link_ksettings.base, useraddr, | |
594 | sizeof(link_ksettings.base))) | |
595 | return -EFAULT; | |
596 | ||
597 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
598 | != link_ksettings.base.link_mode_masks_nwords) | |
599 | return -EINVAL; | |
600 | ||
601 | /* copy the whole structure, now that we know it has expected | |
602 | * format | |
603 | */ | |
604 | err = load_link_ksettings_from_user(&link_ksettings, useraddr); | |
605 | if (err) | |
606 | return err; | |
607 | ||
608 | /* re-check nwords field, just in case */ | |
609 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
610 | != link_ksettings.base.link_mode_masks_nwords) | |
611 | return -EINVAL; | |
612 | ||
bdbdac76 OR |
613 | if (link_ksettings.base.master_slave_cfg || |
614 | link_ksettings.base.master_slave_state) | |
615 | return -EINVAL; | |
616 | ||
73286734 | 617 | err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
1b1b1847 | 618 | if (err >= 0) { |
73286734 | 619 | ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
1b1b1847 MK |
620 | ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); |
621 | } | |
73286734 | 622 | return err; |
3f1ac7a7 DD |
623 | } |
624 | ||
70ae1e12 CF |
625 | int ethtool_virtdev_set_link_ksettings(struct net_device *dev, |
626 | const struct ethtool_link_ksettings *cmd, | |
627 | u32 *dev_speed, u8 *dev_duplex) | |
628 | { | |
629 | u32 speed; | |
630 | u8 duplex; | |
631 | ||
632 | speed = cmd->base.speed; | |
633 | duplex = cmd->base.duplex; | |
634 | /* don't allow custom speed and duplex */ | |
635 | if (!ethtool_validate_speed(speed) || | |
636 | !ethtool_validate_duplex(duplex) || | |
637 | !ethtool_virtdev_validate_cmd(cmd)) | |
638 | return -EINVAL; | |
639 | *dev_speed = speed; | |
640 | *dev_duplex = duplex; | |
641 | ||
642 | return 0; | |
643 | } | |
644 | EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); | |
645 | ||
3f1ac7a7 DD |
646 | /* Query device for its ethtool_cmd settings. |
647 | * | |
9b300495 MK |
648 | * Backward compatibility note: for compatibility with legacy ethtool, this is |
649 | * now implemented via get_link_ksettings. When driver reports higher link mode | |
650 | * bits, a kernel warning is logged once (with name of 1st driver/device) to | |
651 | * recommend user to upgrade ethtool, but the command is successful (only the | |
652 | * lower link mode bits reported back to user). Deprecated fields from | |
653 | * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. | |
3f1ac7a7 | 654 | */ |
4bc71cb9 JP |
655 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
656 | { | |
9b300495 | 657 | struct ethtool_link_ksettings link_ksettings; |
4bc71cb9 | 658 | struct ethtool_cmd cmd; |
9b300495 | 659 | int err; |
4bc71cb9 | 660 | |
3f1ac7a7 | 661 | ASSERT_RTNL(); |
9b300495 MK |
662 | if (!dev->ethtool_ops->get_link_ksettings) |
663 | return -EOPNOTSUPP; | |
3f1ac7a7 | 664 | |
caa93b7c | 665 | if (dev->ethtool->module_fw_flash_in_progress) |
31e0aa99 DR |
666 | return -EBUSY; |
667 | ||
9b300495 MK |
668 | memset(&link_ksettings, 0, sizeof(link_ksettings)); |
669 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
670 | if (err < 0) | |
671 | return err; | |
672 | convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); | |
3237fc63 | 673 | |
9b300495 MK |
674 | /* send a sensible cmd tag back to user */ |
675 | cmd.cmd = ETHTOOL_GSET; | |
1da177e4 LT |
676 | |
677 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
678 | return -EFAULT; | |
3f1ac7a7 | 679 | |
1da177e4 LT |
680 | return 0; |
681 | } | |
682 | ||
3f1ac7a7 DD |
683 | /* Update device link settings with given ethtool_cmd. |
684 | * | |
9b300495 MK |
685 | * Backward compatibility note: for compatibility with legacy ethtool, this is |
686 | * now always implemented via set_link_settings. When user's request updates | |
687 | * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel | |
688 | * warning is logged once (with name of 1st driver/device) to recommend user to | |
689 | * upgrade ethtool, and the request is rejected. | |
3f1ac7a7 | 690 | */ |
1da177e4 LT |
691 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
692 | { | |
9b300495 | 693 | struct ethtool_link_ksettings link_ksettings; |
1da177e4 | 694 | struct ethtool_cmd cmd; |
73286734 | 695 | int ret; |
1da177e4 | 696 | |
3f1ac7a7 | 697 | ASSERT_RTNL(); |
1da177e4 LT |
698 | |
699 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
700 | return -EFAULT; | |
9b300495 | 701 | if (!dev->ethtool_ops->set_link_ksettings) |
3f1ac7a7 DD |
702 | return -EOPNOTSUPP; |
703 | ||
9b300495 MK |
704 | if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) |
705 | return -EINVAL; | |
706 | link_ksettings.base.link_mode_masks_nwords = | |
707 | __ETHTOOL_LINK_MODE_MASK_NU32; | |
73286734 | 708 | ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
1b1b1847 | 709 | if (ret >= 0) { |
73286734 | 710 | ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
1b1b1847 MK |
711 | ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); |
712 | } | |
73286734 | 713 | return ret; |
1da177e4 LT |
714 | } |
715 | ||
095cfcfe JK |
716 | static int |
717 | ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) | |
1da177e4 | 718 | { |
76fd8593 | 719 | const struct ethtool_ops *ops = dev->ethtool_ops; |
edaf5df2 | 720 | struct device *parent = dev->dev.parent; |
1da177e4 | 721 | |
095cfcfe | 722 | rsp->info.cmd = ETHTOOL_GDRVINFO; |
d2efeb52 JH |
723 | strscpy(rsp->info.version, init_uts_ns.name.release, |
724 | sizeof(rsp->info.version)); | |
c03a14e8 | 725 | if (ops->get_drvinfo) { |
095cfcfe | 726 | ops->get_drvinfo(dev, &rsp->info); |
edaf5df2 VM |
727 | if (!rsp->info.bus_info[0] && parent) |
728 | strscpy(rsp->info.bus_info, dev_name(parent), | |
729 | sizeof(rsp->info.bus_info)); | |
730 | if (!rsp->info.driver[0] && parent && parent->driver) | |
731 | strscpy(rsp->info.driver, parent->driver->name, | |
732 | sizeof(rsp->info.driver)); | |
733 | } else if (parent && parent->driver) { | |
734 | strscpy(rsp->info.bus_info, dev_name(parent), | |
095cfcfe | 735 | sizeof(rsp->info.bus_info)); |
edaf5df2 | 736 | strscpy(rsp->info.driver, parent->driver->name, |
095cfcfe | 737 | sizeof(rsp->info.driver)); |
bde3b0fd | 738 | } else if (dev->rtnl_link_ops) { |
a71af890 | 739 | strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, |
bde3b0fd | 740 | sizeof(rsp->info.driver)); |
01414802 BH |
741 | } else { |
742 | return -EOPNOTSUPP; | |
743 | } | |
1da177e4 | 744 | |
723b2f57 JG |
745 | /* |
746 | * this method of obtaining string set info is deprecated; | |
d17792eb | 747 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 748 | */ |
c03a14e8 | 749 | if (ops->get_sset_count) { |
ff03d49f JG |
750 | int rc; |
751 | ||
752 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
753 | if (rc >= 0) | |
095cfcfe | 754 | rsp->info.testinfo_len = rc; |
ff03d49f JG |
755 | rc = ops->get_sset_count(dev, ETH_SS_STATS); |
756 | if (rc >= 0) | |
095cfcfe | 757 | rsp->info.n_stats = rc; |
339bf024 JG |
758 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
759 | if (rc >= 0) | |
095cfcfe | 760 | rsp->info.n_priv_flags = rc; |
ff03d49f | 761 | } |
f9fc54d3 YL |
762 | if (ops->get_regs_len) { |
763 | int ret = ops->get_regs_len(dev); | |
764 | ||
765 | if (ret > 0) | |
095cfcfe | 766 | rsp->info.regdump_len = ret; |
f9fc54d3 YL |
767 | } |
768 | ||
c03a14e8 | 769 | if (ops->get_eeprom_len) |
095cfcfe | 770 | rsp->info.eedump_len = ops->get_eeprom_len(dev); |
ddb6e99e | 771 | |
095cfcfe | 772 | if (!rsp->info.fw_version[0]) |
1af0a094 JK |
773 | rsp->devlink = netdev_to_devlink_get(dev); |
774 | ||
1da177e4 LT |
775 | return 0; |
776 | } | |
777 | ||
f5c445ed | 778 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 779 | void __user *useraddr) |
723b2f57 JG |
780 | { |
781 | struct ethtool_sset_info info; | |
723b2f57 JG |
782 | u64 sset_mask; |
783 | int i, idx = 0, n_bits = 0, ret, rc; | |
784 | u32 *info_buf = NULL; | |
785 | ||
723b2f57 JG |
786 | if (copy_from_user(&info, useraddr, sizeof(info))) |
787 | return -EFAULT; | |
788 | ||
789 | /* store copy of mask, because we zero struct later on */ | |
790 | sset_mask = info.sset_mask; | |
791 | if (!sset_mask) | |
792 | return 0; | |
793 | ||
794 | /* calculate size of return buffer */ | |
d17792eb | 795 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
796 | |
797 | memset(&info, 0, sizeof(info)); | |
798 | info.cmd = ETHTOOL_GSSET_INFO; | |
799 | ||
6396bb22 | 800 | info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); |
723b2f57 JG |
801 | if (!info_buf) |
802 | return -ENOMEM; | |
803 | ||
804 | /* | |
805 | * fill return buffer based on input bitmask and successful | |
806 | * get_sset_count return | |
807 | */ | |
808 | for (i = 0; i < 64; i++) { | |
809 | if (!(sset_mask & (1ULL << i))) | |
810 | continue; | |
811 | ||
340ae165 | 812 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
813 | if (rc >= 0) { |
814 | info.sset_mask |= (1ULL << i); | |
815 | info_buf[idx++] = rc; | |
816 | } | |
817 | } | |
818 | ||
819 | ret = -EFAULT; | |
820 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
821 | goto out; | |
822 | ||
823 | useraddr += offsetof(struct ethtool_sset_info, data); | |
ed717613 | 824 | if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) |
723b2f57 JG |
825 | goto out; |
826 | ||
827 | ret = 0; | |
828 | ||
829 | out: | |
830 | kfree(info_buf); | |
831 | return ret; | |
832 | } | |
833 | ||
dd98d289 AB |
834 | static noinline_for_stack int |
835 | ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, | |
836 | const struct compat_ethtool_rxnfc __user *useraddr, | |
837 | size_t size) | |
838 | { | |
839 | struct compat_ethtool_rxnfc crxnfc = {}; | |
840 | ||
841 | /* We expect there to be holes between fs.m_ext and | |
842 | * fs.ring_cookie and at the end of fs, but nowhere else. | |
843 | * On non-x86, no conversion should be needed. | |
844 | */ | |
845 | BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && | |
846 | sizeof(struct compat_ethtool_rxnfc) != | |
847 | sizeof(struct ethtool_rxnfc)); | |
848 | BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + | |
849 | sizeof(useraddr->fs.m_ext) != | |
850 | offsetof(struct ethtool_rxnfc, fs.m_ext) + | |
851 | sizeof(rxnfc->fs.m_ext)); | |
852 | BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - | |
853 | offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != | |
854 | offsetof(struct ethtool_rxnfc, fs.location) - | |
855 | offsetof(struct ethtool_rxnfc, fs.ring_cookie)); | |
856 | ||
857 | if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) | |
858 | return -EFAULT; | |
859 | ||
860 | *rxnfc = (struct ethtool_rxnfc) { | |
861 | .cmd = crxnfc.cmd, | |
862 | .flow_type = crxnfc.flow_type, | |
863 | .data = crxnfc.data, | |
864 | .fs = { | |
865 | .flow_type = crxnfc.fs.flow_type, | |
866 | .h_u = crxnfc.fs.h_u, | |
867 | .h_ext = crxnfc.fs.h_ext, | |
868 | .m_u = crxnfc.fs.m_u, | |
869 | .m_ext = crxnfc.fs.m_ext, | |
870 | .ring_cookie = crxnfc.fs.ring_cookie, | |
871 | .location = crxnfc.fs.location, | |
872 | }, | |
873 | .rule_cnt = crxnfc.rule_cnt, | |
874 | }; | |
875 | ||
876 | return 0; | |
877 | } | |
878 | ||
879 | static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, | |
880 | const void __user *useraddr, | |
881 | size_t size) | |
882 | { | |
883 | if (compat_need_64bit_alignment_fixup()) | |
884 | return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); | |
885 | ||
886 | if (copy_from_user(rxnfc, useraddr, size)) | |
887 | return -EFAULT; | |
888 | ||
889 | return 0; | |
890 | } | |
891 | ||
892 | static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, | |
893 | const struct ethtool_rxnfc *rxnfc, | |
894 | size_t size, const u32 *rule_buf) | |
895 | { | |
896 | struct compat_ethtool_rxnfc crxnfc; | |
897 | ||
898 | memset(&crxnfc, 0, sizeof(crxnfc)); | |
899 | crxnfc = (struct compat_ethtool_rxnfc) { | |
900 | .cmd = rxnfc->cmd, | |
901 | .flow_type = rxnfc->flow_type, | |
902 | .data = rxnfc->data, | |
903 | .fs = { | |
904 | .flow_type = rxnfc->fs.flow_type, | |
905 | .h_u = rxnfc->fs.h_u, | |
906 | .h_ext = rxnfc->fs.h_ext, | |
907 | .m_u = rxnfc->fs.m_u, | |
908 | .m_ext = rxnfc->fs.m_ext, | |
909 | .ring_cookie = rxnfc->fs.ring_cookie, | |
910 | .location = rxnfc->fs.location, | |
911 | }, | |
912 | .rule_cnt = rxnfc->rule_cnt, | |
913 | }; | |
914 | ||
915 | if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) | |
916 | return -EFAULT; | |
917 | ||
918 | return 0; | |
919 | } | |
920 | ||
801b27e8 JD |
921 | static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, |
922 | size_t *info_size, void __user *useraddr) | |
923 | { | |
924 | /* struct ethtool_rxnfc was originally defined for | |
925 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
926 | * members. User-space might still be using that | |
927 | * definition. | |
928 | */ | |
929 | if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) | |
930 | *info_size = (offsetof(struct ethtool_rxnfc, data) + | |
931 | sizeof(info->data)); | |
932 | ||
933 | if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) | |
934 | return -EFAULT; | |
935 | ||
936 | if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { | |
937 | *info_size = sizeof(*info); | |
938 | if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) | |
939 | return -EFAULT; | |
940 | /* Since malicious users may modify the original data, | |
941 | * we need to check whether FLOW_RSS is still requested. | |
942 | */ | |
943 | if (!(info->flow_type & FLOW_RSS)) | |
944 | return -EINVAL; | |
945 | } | |
946 | ||
947 | if (info->cmd != cmd) | |
948 | return -EINVAL; | |
949 | ||
950 | return 0; | |
951 | } | |
952 | ||
dd98d289 AB |
953 | static int ethtool_rxnfc_copy_to_user(void __user *useraddr, |
954 | const struct ethtool_rxnfc *rxnfc, | |
955 | size_t size, const u32 *rule_buf) | |
956 | { | |
957 | int ret; | |
958 | ||
959 | if (compat_need_64bit_alignment_fixup()) { | |
960 | ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, | |
961 | rule_buf); | |
962 | useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); | |
963 | } else { | |
9b29a161 | 964 | ret = copy_to_user(useraddr, rxnfc, size); |
dd98d289 AB |
965 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); |
966 | } | |
967 | ||
968 | if (ret) | |
969 | return -EFAULT; | |
970 | ||
971 | if (rule_buf) { | |
972 | if (copy_to_user(useraddr, rule_buf, | |
973 | rxnfc->rule_cnt * sizeof(u32))) | |
974 | return -EFAULT; | |
975 | } | |
976 | ||
977 | return 0; | |
978 | } | |
979 | ||
97f8aefb | 980 | static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
bf988435 | 981 | u32 cmd, void __user *useraddr) |
0853ad66 | 982 | { |
13e59344 | 983 | const struct ethtool_ops *ops = dev->ethtool_ops; |
bf988435 BH |
984 | struct ethtool_rxnfc info; |
985 | size_t info_size = sizeof(info); | |
55664f32 | 986 | int rc; |
0853ad66 | 987 | |
501869fe | 988 | if (!ops->set_rxnfc) |
0853ad66 SB |
989 | return -EOPNOTSUPP; |
990 | ||
801b27e8 JD |
991 | rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); |
992 | if (rc) | |
993 | return rc; | |
0853ad66 | 994 | |
501869fe GE |
995 | if (ops->get_rxfh) { |
996 | struct ethtool_rxfh_param rxfh = {}; | |
13e59344 | 997 | |
501869fe GE |
998 | rc = ops->get_rxfh(dev, &rxfh); |
999 | if (rc) | |
1000 | return rc; | |
1001 | ||
1002 | /* Sanity check: if symmetric-xor is set, then: | |
1003 | * 1 - no other fields besides IP src/dst and/or L4 src/dst | |
1004 | * 2 - If src is set, dst must also be set | |
1005 | */ | |
1006 | if ((rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && | |
1007 | ((info.data & ~(RXH_IP_SRC | RXH_IP_DST | | |
1008 | RXH_L4_B_0_1 | RXH_L4_B_2_3)) || | |
1009 | (!!(info.data & RXH_IP_SRC) ^ !!(info.data & RXH_IP_DST)) || | |
1010 | (!!(info.data & RXH_L4_B_0_1) ^ !!(info.data & RXH_L4_B_2_3)))) | |
1011 | return -EINVAL; | |
1012 | } | |
13e59344 AZ |
1013 | |
1014 | rc = ops->set_rxnfc(dev, &info); | |
55664f32 BH |
1015 | if (rc) |
1016 | return rc; | |
1017 | ||
1018 | if (cmd == ETHTOOL_SRXCLSRLINS && | |
dd98d289 | 1019 | ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) |
55664f32 BH |
1020 | return -EFAULT; |
1021 | ||
1022 | return 0; | |
0853ad66 SB |
1023 | } |
1024 | ||
97f8aefb | 1025 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 1026 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
1027 | { |
1028 | struct ethtool_rxnfc info; | |
bf988435 | 1029 | size_t info_size = sizeof(info); |
59089d8d SB |
1030 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1031 | int ret; | |
1032 | void *rule_buf = NULL; | |
0853ad66 | 1033 | |
59089d8d | 1034 | if (!ops->get_rxnfc) |
0853ad66 SB |
1035 | return -EOPNOTSUPP; |
1036 | ||
801b27e8 JD |
1037 | ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); |
1038 | if (ret) | |
1039 | return ret; | |
2bb3207d | 1040 | |
59089d8d SB |
1041 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
1042 | if (info.rule_cnt > 0) { | |
db048b69 | 1043 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
6396bb22 | 1044 | rule_buf = kcalloc(info.rule_cnt, sizeof(u32), |
db048b69 | 1045 | GFP_USER); |
59089d8d SB |
1046 | if (!rule_buf) |
1047 | return -ENOMEM; | |
1048 | } | |
1049 | } | |
0853ad66 | 1050 | |
59089d8d SB |
1051 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
1052 | if (ret < 0) | |
1053 | goto err_out; | |
1054 | ||
dd98d289 | 1055 | ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); |
59089d8d | 1056 | err_out: |
c9caceca | 1057 | kfree(rule_buf); |
59089d8d SB |
1058 | |
1059 | return ret; | |
0853ad66 SB |
1060 | } |
1061 | ||
3de0b592 VD |
1062 | static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
1063 | struct ethtool_rxnfc *rx_rings, | |
1064 | u32 size) | |
1065 | { | |
fb95cd8d | 1066 | int i; |
3de0b592 | 1067 | |
ed717613 | 1068 | if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) |
fb95cd8d | 1069 | return -EFAULT; |
3de0b592 VD |
1070 | |
1071 | /* Validate ring indices */ | |
fb95cd8d BH |
1072 | for (i = 0; i < size; i++) |
1073 | if (indir[i] >= rx_rings->data) | |
1074 | return -EINVAL; | |
1075 | ||
1076 | return 0; | |
3de0b592 VD |
1077 | } |
1078 | ||
ba905f5e | 1079 | u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
1080 | |
1081 | void netdev_rss_key_fill(void *buffer, size_t len) | |
1082 | { | |
1083 | BUG_ON(len > sizeof(netdev_rss_key)); | |
1084 | net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); | |
1085 | memcpy(buffer, netdev_rss_key, len); | |
1086 | } | |
1087 | EXPORT_SYMBOL(netdev_rss_key_fill); | |
1088 | ||
a5b6ee29 BH |
1089 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
1090 | void __user *useraddr) | |
1091 | { | |
fb6e30a7 AZ |
1092 | struct ethtool_rxfh_param rxfh = {}; |
1093 | u32 user_size; | |
a5b6ee29 BH |
1094 | int ret; |
1095 | ||
7850f63f | 1096 | if (!dev->ethtool_ops->get_rxfh_indir_size || |
fe62d001 | 1097 | !dev->ethtool_ops->get_rxfh) |
7850f63f | 1098 | return -EOPNOTSUPP; |
fb6e30a7 AZ |
1099 | rxfh.indir_size = dev->ethtool_ops->get_rxfh_indir_size(dev); |
1100 | if (rxfh.indir_size == 0) | |
a5b6ee29 BH |
1101 | return -EOPNOTSUPP; |
1102 | ||
7850f63f | 1103 | if (copy_from_user(&user_size, |
a5b6ee29 | 1104 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1105 | sizeof(user_size))) |
a5b6ee29 BH |
1106 | return -EFAULT; |
1107 | ||
7850f63f | 1108 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
fb6e30a7 | 1109 | &rxfh.indir_size, sizeof(rxfh.indir_size))) |
7850f63f BH |
1110 | return -EFAULT; |
1111 | ||
1112 | /* If the user buffer size is 0, this is just a query for the | |
1113 | * device table size. Otherwise, if it's smaller than the | |
1114 | * device table size it's an error. | |
1115 | */ | |
fb6e30a7 | 1116 | if (user_size < rxfh.indir_size) |
7850f63f BH |
1117 | return user_size == 0 ? 0 : -EINVAL; |
1118 | ||
fb6e30a7 AZ |
1119 | rxfh.indir = kcalloc(rxfh.indir_size, sizeof(rxfh.indir[0]), GFP_USER); |
1120 | if (!rxfh.indir) | |
a5b6ee29 BH |
1121 | return -ENOMEM; |
1122 | ||
fb6e30a7 | 1123 | ret = dev->ethtool_ops->get_rxfh(dev, &rxfh); |
a5b6ee29 BH |
1124 | if (ret) |
1125 | goto out; | |
7850f63f BH |
1126 | if (copy_to_user(useraddr + |
1127 | offsetof(struct ethtool_rxfh_indir, ring_index[0]), | |
fb6e30a7 | 1128 | rxfh.indir, rxfh.indir_size * sizeof(*rxfh.indir))) |
a5b6ee29 BH |
1129 | ret = -EFAULT; |
1130 | ||
1131 | out: | |
fb6e30a7 | 1132 | kfree(rxfh.indir); |
a5b6ee29 BH |
1133 | return ret; |
1134 | } | |
1135 | ||
1136 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
1137 | void __user *useraddr) | |
1138 | { | |
c03a14e8 | 1139 | const struct ethtool_ops *ops = dev->ethtool_ops; |
fb6e30a7 AZ |
1140 | struct ethtool_rxfh_param rxfh_dev = {}; |
1141 | struct netlink_ext_ack *extack = NULL; | |
1142 | struct ethtool_rxnfc rx_rings; | |
1143 | u32 user_size, i; | |
a5b6ee29 | 1144 | int ret; |
3de0b592 | 1145 | u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
a5b6ee29 | 1146 | |
fe62d001 | 1147 | if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
c03a14e8 | 1148 | !ops->get_rxnfc) |
7850f63f | 1149 | return -EOPNOTSUPP; |
c03a14e8 | 1150 | |
fb6e30a7 AZ |
1151 | rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); |
1152 | if (rxfh_dev.indir_size == 0) | |
a5b6ee29 BH |
1153 | return -EOPNOTSUPP; |
1154 | ||
7850f63f | 1155 | if (copy_from_user(&user_size, |
a5b6ee29 | 1156 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1157 | sizeof(user_size))) |
a5b6ee29 BH |
1158 | return -EFAULT; |
1159 | ||
fb6e30a7 | 1160 | if (user_size != 0 && user_size != rxfh_dev.indir_size) |
7850f63f BH |
1161 | return -EINVAL; |
1162 | ||
fb6e30a7 AZ |
1163 | rxfh_dev.indir = kcalloc(rxfh_dev.indir_size, |
1164 | sizeof(rxfh_dev.indir[0]), GFP_USER); | |
1165 | if (!rxfh_dev.indir) | |
a5b6ee29 BH |
1166 | return -ENOMEM; |
1167 | ||
7850f63f | 1168 | rx_rings.cmd = ETHTOOL_GRXRINGS; |
c03a14e8 | 1169 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
7850f63f BH |
1170 | if (ret) |
1171 | goto out; | |
278bc429 BH |
1172 | |
1173 | if (user_size == 0) { | |
fb6e30a7 AZ |
1174 | u32 *indir = rxfh_dev.indir; |
1175 | ||
1176 | for (i = 0; i < rxfh_dev.indir_size; i++) | |
278bc429 BH |
1177 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); |
1178 | } else { | |
fb6e30a7 | 1179 | ret = ethtool_copy_validate_indir(rxfh_dev.indir, |
3de0b592 VD |
1180 | useraddr + ringidx_offset, |
1181 | &rx_rings, | |
fb6e30a7 | 1182 | rxfh_dev.indir_size); |
3de0b592 VD |
1183 | if (ret) |
1184 | goto out; | |
1185 | } | |
1186 | ||
fb6e30a7 AZ |
1187 | rxfh_dev.hfunc = ETH_RSS_HASH_NO_CHANGE; |
1188 | ret = ops->set_rxfh(dev, &rxfh_dev, extack); | |
d4ab4286 KJ |
1189 | if (ret) |
1190 | goto out; | |
1191 | ||
1192 | /* indicate whether rxfh was set to default */ | |
1193 | if (user_size == 0) | |
1194 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1195 | else | |
1196 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
3de0b592 VD |
1197 | |
1198 | out: | |
fb6e30a7 | 1199 | kfree(rxfh_dev.indir); |
3de0b592 VD |
1200 | return ret; |
1201 | } | |
1202 | ||
1203 | static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, | |
1204 | void __user *useraddr) | |
1205 | { | |
3de0b592 | 1206 | const struct ethtool_ops *ops = dev->ethtool_ops; |
fb6e30a7 | 1207 | struct ethtool_rxfh_param rxfh_dev = {}; |
f062a384 | 1208 | u32 user_indir_size, user_key_size; |
7964e788 | 1209 | struct ethtool_rxfh_context *ctx; |
f062a384 | 1210 | struct ethtool_rxfh rxfh; |
f062a384 | 1211 | u32 indir_bytes; |
3de0b592 | 1212 | u8 *rss_config; |
fb6e30a7 AZ |
1213 | u32 total_size; |
1214 | int ret; | |
3de0b592 | 1215 | |
892311f6 | 1216 | if (!ops->get_rxfh) |
3de0b592 VD |
1217 | return -EOPNOTSUPP; |
1218 | ||
1219 | if (ops->get_rxfh_indir_size) | |
fb6e30a7 | 1220 | rxfh_dev.indir_size = ops->get_rxfh_indir_size(dev); |
3de0b592 | 1221 | if (ops->get_rxfh_key_size) |
fb6e30a7 | 1222 | rxfh_dev.key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1223 | |
f062a384 | 1224 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 | 1225 | return -EFAULT; |
f062a384 BH |
1226 | user_indir_size = rxfh.indir_size; |
1227 | user_key_size = rxfh.key_size; | |
3de0b592 | 1228 | |
f062a384 | 1229 | /* Check that reserved fields are 0 for now */ |
13e59344 | 1230 | if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) |
f062a384 | 1231 | return -EINVAL; |
84a1d9c4 | 1232 | /* Most drivers don't handle rss_context, check it's 0 as well */ |
ce056504 JK |
1233 | if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || |
1234 | ops->create_rxfh_context)) | |
84a1d9c4 | 1235 | return -EOPNOTSUPP; |
f062a384 | 1236 | |
fb6e30a7 AZ |
1237 | rxfh.indir_size = rxfh_dev.indir_size; |
1238 | rxfh.key_size = rxfh_dev.key_size; | |
f062a384 | 1239 | if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) |
3de0b592 VD |
1240 | return -EFAULT; |
1241 | ||
fb6e30a7 AZ |
1242 | if ((user_indir_size && user_indir_size != rxfh_dev.indir_size) || |
1243 | (user_key_size && user_key_size != rxfh_dev.key_size)) | |
3de0b592 VD |
1244 | return -EINVAL; |
1245 | ||
fb6e30a7 | 1246 | indir_bytes = user_indir_size * sizeof(rxfh_dev.indir[0]); |
3de0b592 VD |
1247 | total_size = indir_bytes + user_key_size; |
1248 | rss_config = kzalloc(total_size, GFP_USER); | |
1249 | if (!rss_config) | |
1250 | return -ENOMEM; | |
1251 | ||
1252 | if (user_indir_size) | |
fb6e30a7 | 1253 | rxfh_dev.indir = (u32 *)rss_config; |
3de0b592 VD |
1254 | |
1255 | if (user_key_size) | |
fb6e30a7 | 1256 | rxfh_dev.key = rss_config + indir_bytes; |
3de0b592 | 1257 | |
7964e788 EC |
1258 | if (rxfh.rss_context) { |
1259 | ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); | |
1260 | if (!ctx) { | |
1261 | ret = -ENOENT; | |
1262 | goto out; | |
1263 | } | |
1264 | if (rxfh_dev.indir) | |
1265 | memcpy(rxfh_dev.indir, ethtool_rxfh_context_indir(ctx), | |
1266 | indir_bytes); | |
ec6e57be JK |
1267 | if (!ops->rxfh_per_ctx_key) { |
1268 | rxfh_dev.key_size = 0; | |
1269 | } else { | |
1270 | if (rxfh_dev.key) | |
1271 | memcpy(rxfh_dev.key, | |
1272 | ethtool_rxfh_context_key(ctx), | |
1273 | user_key_size); | |
1274 | rxfh_dev.hfunc = ctx->hfunc; | |
1275 | } | |
7964e788 EC |
1276 | rxfh_dev.input_xfrm = ctx->input_xfrm; |
1277 | ret = 0; | |
1278 | } else { | |
1279 | ret = dev->ethtool_ops->get_rxfh(dev, &rxfh_dev); | |
1280 | if (ret) | |
1281 | goto out; | |
1282 | } | |
3de0b592 | 1283 | |
892311f6 | 1284 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
fb6e30a7 | 1285 | &rxfh_dev.hfunc, sizeof(rxfh.hfunc))) { |
892311f6 | 1286 | ret = -EFAULT; |
7c402f77 AZ |
1287 | } else if (copy_to_user(useraddr + |
1288 | offsetof(struct ethtool_rxfh, input_xfrm), | |
1289 | &rxfh_dev.input_xfrm, | |
1290 | sizeof(rxfh.input_xfrm))) { | |
1291 | ret = -EFAULT; | |
ec6e57be JK |
1292 | } else if (copy_to_user(useraddr + |
1293 | offsetof(struct ethtool_rxfh, key_size), | |
1294 | &rxfh_dev.key_size, | |
1295 | sizeof(rxfh.key_size))) { | |
1296 | ret = -EFAULT; | |
892311f6 EP |
1297 | } else if (copy_to_user(useraddr + |
1298 | offsetof(struct ethtool_rxfh, rss_config[0]), | |
1299 | rss_config, total_size)) { | |
1300 | ret = -EFAULT; | |
1301 | } | |
1302 | out: | |
3de0b592 VD |
1303 | kfree(rss_config); |
1304 | ||
1305 | return ret; | |
1306 | } | |
1307 | ||
28c8757a JK |
1308 | static struct ethtool_rxfh_context * |
1309 | ethtool_rxfh_ctx_alloc(const struct ethtool_ops *ops, | |
1310 | u32 indir_size, u32 key_size) | |
1311 | { | |
1312 | size_t indir_bytes, flex_len, key_off, size; | |
1313 | struct ethtool_rxfh_context *ctx; | |
1314 | u32 priv_bytes, indir_max; | |
1315 | u16 key_max; | |
1316 | ||
1317 | key_max = max(key_size, ops->rxfh_key_space); | |
1318 | indir_max = max(indir_size, ops->rxfh_indir_space); | |
1319 | ||
1320 | priv_bytes = ALIGN(ops->rxfh_priv_size, sizeof(u32)); | |
1321 | indir_bytes = array_size(indir_max, sizeof(u32)); | |
1322 | ||
1323 | key_off = size_add(priv_bytes, indir_bytes); | |
1324 | flex_len = size_add(key_off, key_max); | |
1325 | size = struct_size_t(struct ethtool_rxfh_context, data, flex_len); | |
1326 | ||
1327 | ctx = kzalloc(size, GFP_KERNEL_ACCOUNT); | |
1328 | if (!ctx) | |
1329 | return NULL; | |
1330 | ||
1331 | ctx->indir_size = indir_size; | |
1332 | ctx->key_size = key_size; | |
1333 | ctx->key_off = key_off; | |
1334 | ctx->priv_size = ops->rxfh_priv_size; | |
1335 | ||
1336 | ctx->hfunc = ETH_RSS_HASH_NO_CHANGE; | |
1337 | ctx->input_xfrm = RXH_XFRM_NO_CHANGE; | |
1338 | ||
1339 | return ctx; | |
1340 | } | |
1341 | ||
3de0b592 VD |
1342 | static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, |
1343 | void __user *useraddr) | |
1344 | { | |
fb6e30a7 | 1345 | u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
3de0b592 | 1346 | const struct ethtool_ops *ops = dev->ethtool_ops; |
fb6e30a7 | 1347 | u32 dev_indir_size = 0, dev_key_size = 0, i; |
7195f0ef | 1348 | u32 user_indir_len = 0, indir_bytes = 0; |
fb6e30a7 | 1349 | struct ethtool_rxfh_param rxfh_dev = {}; |
eac9122f | 1350 | struct ethtool_rxfh_context *ctx = NULL; |
fb6e30a7 | 1351 | struct netlink_ext_ack *extack = NULL; |
3de0b592 | 1352 | struct ethtool_rxnfc rx_rings; |
f062a384 | 1353 | struct ethtool_rxfh rxfh; |
87925151 | 1354 | bool locked = false; /* dev->ethtool->rss_lock taken */ |
eac9122f | 1355 | bool create = false; |
fb6e30a7 AZ |
1356 | u8 *rss_config; |
1357 | int ret; | |
3de0b592 | 1358 | |
892311f6 | 1359 | if (!ops->get_rxnfc || !ops->set_rxfh) |
3de0b592 VD |
1360 | return -EOPNOTSUPP; |
1361 | ||
1362 | if (ops->get_rxfh_indir_size) | |
1363 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 | 1364 | if (ops->get_rxfh_key_size) |
d340c862 | 1365 | dev_key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1366 | |
f062a384 | 1367 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 VD |
1368 | return -EFAULT; |
1369 | ||
f062a384 | 1370 | /* Check that reserved fields are 0 for now */ |
13e59344 | 1371 | if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd32) |
f062a384 | 1372 | return -EINVAL; |
84a1d9c4 | 1373 | /* Most drivers don't handle rss_context, check it's 0 as well */ |
ce056504 JK |
1374 | if (rxfh.rss_context && !(ops->cap_rss_ctx_supported || |
1375 | ops->create_rxfh_context)) | |
84a1d9c4 | 1376 | return -EOPNOTSUPP; |
13e59344 | 1377 | /* Check input data transformation capabilities */ |
948f97f9 AZ |
1378 | if (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_SYM_XOR && |
1379 | rxfh.input_xfrm != RXH_XFRM_NO_CHANGE) | |
1380 | return -EINVAL; | |
503757c8 SM |
1381 | if (rxfh.input_xfrm != RXH_XFRM_NO_CHANGE && |
1382 | (rxfh.input_xfrm & RXH_XFRM_SYM_XOR) && | |
13e59344 AZ |
1383 | !ops->cap_rss_sym_xor_supported) |
1384 | return -EOPNOTSUPP; | |
eac9122f | 1385 | create = rxfh.rss_context == ETH_RXFH_CONTEXT_ALLOC; |
f062a384 | 1386 | |
f062a384 BH |
1387 | if ((rxfh.indir_size && |
1388 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && | |
1389 | rxfh.indir_size != dev_indir_size) || | |
4d7c3c1a GP |
1390 | (rxfh.key_size && rxfh.key_size != dev_key_size)) |
1391 | return -EINVAL; | |
1392 | ||
1393 | /* Must request at least one change: indir size, hash key, function | |
1394 | * or input transformation. | |
1395 | * There's no need for any of it in case of context creation. | |
1396 | */ | |
1397 | if (!create && | |
f062a384 | 1398 | (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && |
0dd415d1 AZ |
1399 | rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE && |
1400 | rxfh.input_xfrm == RXH_XFRM_NO_CHANGE)) | |
3de0b592 VD |
1401 | return -EINVAL; |
1402 | ||
dc975537 | 1403 | indir_bytes = dev_indir_size * sizeof(rxfh_dev.indir[0]); |
3de0b592 | 1404 | |
ec6e57be JK |
1405 | /* Check settings which may be global rather than per RSS-context */ |
1406 | if (rxfh.rss_context && !ops->rxfh_per_ctx_key) | |
1407 | if (rxfh.key_size || | |
1408 | (rxfh.hfunc && rxfh.hfunc != ETH_RSS_HASH_NO_CHANGE) || | |
1409 | (rxfh.input_xfrm && rxfh.input_xfrm != RXH_XFRM_NO_CHANGE)) | |
1410 | return -EOPNOTSUPP; | |
1411 | ||
dc975537 | 1412 | rss_config = kzalloc(indir_bytes + dev_key_size, GFP_USER); |
3de0b592 VD |
1413 | if (!rss_config) |
1414 | return -ENOMEM; | |
1415 | ||
1416 | rx_rings.cmd = ETHTOOL_GRXRINGS; | |
1417 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); | |
1418 | if (ret) | |
1419 | goto out; | |
1420 | ||
84a1d9c4 EC |
1421 | /* rxfh.indir_size == 0 means reset the indir table to default (master |
1422 | * context) or delete the context (other RSS contexts). | |
f062a384 | 1423 | * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. |
3de0b592 | 1424 | */ |
f062a384 BH |
1425 | if (rxfh.indir_size && |
1426 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { | |
7195f0ef | 1427 | user_indir_len = indir_bytes; |
fb6e30a7 AZ |
1428 | rxfh_dev.indir = (u32 *)rss_config; |
1429 | rxfh_dev.indir_size = dev_indir_size; | |
1430 | ret = ethtool_copy_validate_indir(rxfh_dev.indir, | |
3de0b592 VD |
1431 | useraddr + rss_cfg_offset, |
1432 | &rx_rings, | |
f062a384 | 1433 | rxfh.indir_size); |
3de0b592 | 1434 | if (ret) |
7850f63f | 1435 | goto out; |
f062a384 | 1436 | } else if (rxfh.indir_size == 0) { |
84a1d9c4 | 1437 | if (rxfh.rss_context == 0) { |
fb6e30a7 AZ |
1438 | u32 *indir; |
1439 | ||
1440 | rxfh_dev.indir = (u32 *)rss_config; | |
1441 | rxfh_dev.indir_size = dev_indir_size; | |
1442 | indir = rxfh_dev.indir; | |
84a1d9c4 EC |
1443 | for (i = 0; i < dev_indir_size; i++) |
1444 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1445 | } else { | |
dcd8dbf9 | 1446 | rxfh_dev.rss_delete = true; |
84a1d9c4 | 1447 | } |
3de0b592 | 1448 | } |
278bc429 | 1449 | |
f062a384 | 1450 | if (rxfh.key_size) { |
fb6e30a7 AZ |
1451 | rxfh_dev.key_size = dev_key_size; |
1452 | rxfh_dev.key = rss_config + indir_bytes; | |
1453 | if (copy_from_user(rxfh_dev.key, | |
7195f0ef | 1454 | useraddr + rss_cfg_offset + user_indir_len, |
f062a384 | 1455 | rxfh.key_size)) { |
3de0b592 VD |
1456 | ret = -EFAULT; |
1457 | goto out; | |
278bc429 | 1458 | } |
7850f63f BH |
1459 | } |
1460 | ||
87925151 EC |
1461 | if (rxfh.rss_context) { |
1462 | mutex_lock(&dev->ethtool->rss_lock); | |
1463 | locked = true; | |
1464 | } | |
eac9122f EC |
1465 | if (create) { |
1466 | if (rxfh_dev.rss_delete) { | |
1467 | ret = -EINVAL; | |
1468 | goto out; | |
1469 | } | |
28c8757a | 1470 | ctx = ethtool_rxfh_ctx_alloc(ops, dev_indir_size, dev_key_size); |
eac9122f EC |
1471 | if (!ctx) { |
1472 | ret = -ENOMEM; | |
1473 | goto out; | |
1474 | } | |
28c8757a | 1475 | |
847a8ab1 | 1476 | if (ops->create_rxfh_context) { |
b54de559 | 1477 | u32 limit = ops->rxfh_max_num_contexts ?: U32_MAX; |
847a8ab1 EC |
1478 | u32 ctx_id; |
1479 | ||
1480 | /* driver uses new API, core allocates ID */ | |
1481 | ret = xa_alloc(&dev->ethtool->rss_ctx, &ctx_id, ctx, | |
b54de559 EC |
1482 | XA_LIMIT(1, limit - 1), |
1483 | GFP_KERNEL_ACCOUNT); | |
847a8ab1 EC |
1484 | if (ret < 0) { |
1485 | kfree(ctx); | |
1486 | goto out; | |
1487 | } | |
1488 | WARN_ON(!ctx_id); /* can't happen */ | |
1489 | rxfh.rss_context = ctx_id; | |
1490 | } | |
eac9122f EC |
1491 | } else if (rxfh.rss_context) { |
1492 | ctx = xa_load(&dev->ethtool->rss_ctx, rxfh.rss_context); | |
1493 | if (!ctx) { | |
1494 | ret = -ENOENT; | |
1495 | goto out; | |
1496 | } | |
1497 | } | |
fb6e30a7 | 1498 | rxfh_dev.hfunc = rxfh.hfunc; |
dcd8dbf9 | 1499 | rxfh_dev.rss_context = rxfh.rss_context; |
13e59344 | 1500 | rxfh_dev.input_xfrm = rxfh.input_xfrm; |
fb6e30a7 | 1501 | |
847a8ab1 | 1502 | if (rxfh.rss_context && ops->create_rxfh_context) { |
dc975537 | 1503 | if (create) { |
30a32cdf EC |
1504 | ret = ops->create_rxfh_context(dev, ctx, &rxfh_dev, |
1505 | extack); | |
dc975537 JK |
1506 | /* Make sure driver populates defaults */ |
1507 | WARN_ON_ONCE(!ret && !rxfh_dev.key && | |
1508 | !memchr_inv(ethtool_rxfh_context_key(ctx), | |
1509 | 0, ctx->key_size)); | |
1510 | } else if (rxfh_dev.rss_delete) { | |
847a8ab1 | 1511 | ret = ops->remove_rxfh_context(dev, ctx, |
30a32cdf EC |
1512 | rxfh.rss_context, |
1513 | extack); | |
dc975537 | 1514 | } else { |
30a32cdf EC |
1515 | ret = ops->modify_rxfh_context(dev, ctx, &rxfh_dev, |
1516 | extack); | |
dc975537 | 1517 | } |
847a8ab1 EC |
1518 | } else { |
1519 | ret = ops->set_rxfh(dev, &rxfh_dev, extack); | |
1520 | } | |
1521 | if (ret) { | |
1522 | if (create) { | |
eac9122f | 1523 | /* failed to create, free our new tracking entry */ |
847a8ab1 EC |
1524 | if (ops->create_rxfh_context) |
1525 | xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); | |
eac9122f | 1526 | kfree(ctx); |
847a8ab1 | 1527 | } |
d4ab4286 | 1528 | goto out; |
eac9122f | 1529 | } |
d4ab4286 | 1530 | |
84a1d9c4 | 1531 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), |
dcd8dbf9 | 1532 | &rxfh_dev.rss_context, sizeof(rxfh_dev.rss_context))) |
84a1d9c4 EC |
1533 | ret = -EFAULT; |
1534 | ||
dcd8dbf9 | 1535 | if (!rxfh_dev.rss_context) { |
84a1d9c4 EC |
1536 | /* indicate whether rxfh was set to default */ |
1537 | if (rxfh.indir_size == 0) | |
1538 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1539 | else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) | |
1540 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
1541 | } | |
eac9122f | 1542 | /* Update rss_ctx tracking */ |
847a8ab1 EC |
1543 | if (create && !ops->create_rxfh_context) { |
1544 | /* driver uses old API, it chose context ID */ | |
1a16cdf7 | 1545 | if (WARN_ON(xa_load(&dev->ethtool->rss_ctx, rxfh_dev.rss_context))) { |
eac9122f EC |
1546 | /* context ID reused, our tracking is screwed */ |
1547 | kfree(ctx); | |
1548 | goto out; | |
1549 | } | |
1550 | /* Allocate the exact ID the driver gave us */ | |
1a16cdf7 | 1551 | if (xa_is_err(xa_store(&dev->ethtool->rss_ctx, rxfh_dev.rss_context, |
eac9122f EC |
1552 | ctx, GFP_KERNEL))) { |
1553 | kfree(ctx); | |
1554 | goto out; | |
1555 | } | |
dc975537 JK |
1556 | |
1557 | /* Fetch the defaults for the old API, in the new API drivers | |
1558 | * should write defaults into ctx themselves. | |
1559 | */ | |
1560 | rxfh_dev.indir = (u32 *)rss_config; | |
1561 | rxfh_dev.indir_size = dev_indir_size; | |
1562 | ||
1563 | rxfh_dev.key = rss_config + indir_bytes; | |
1564 | rxfh_dev.key_size = dev_key_size; | |
1565 | ||
1566 | ret = ops->get_rxfh(dev, &rxfh_dev); | |
1567 | if (WARN_ON(ret)) { | |
1568 | xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context); | |
1569 | kfree(ctx); | |
1570 | goto out; | |
1571 | } | |
eac9122f EC |
1572 | } |
1573 | if (rxfh_dev.rss_delete) { | |
1574 | WARN_ON(xa_erase(&dev->ethtool->rss_ctx, rxfh.rss_context) != ctx); | |
1575 | kfree(ctx); | |
1576 | } else if (ctx) { | |
1577 | if (rxfh_dev.indir) { | |
1578 | for (i = 0; i < dev_indir_size; i++) | |
1579 | ethtool_rxfh_context_indir(ctx)[i] = rxfh_dev.indir[i]; | |
dc975537 JK |
1580 | ctx->indir_configured = |
1581 | rxfh.indir_size && | |
1582 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE; | |
eac9122f EC |
1583 | } |
1584 | if (rxfh_dev.key) { | |
1585 | memcpy(ethtool_rxfh_context_key(ctx), rxfh_dev.key, | |
1586 | dev_key_size); | |
dc975537 | 1587 | ctx->key_configured = !!rxfh.key_size; |
eac9122f EC |
1588 | } |
1589 | if (rxfh_dev.hfunc != ETH_RSS_HASH_NO_CHANGE) | |
1590 | ctx->hfunc = rxfh_dev.hfunc; | |
1591 | if (rxfh_dev.input_xfrm != RXH_XFRM_NO_CHANGE) | |
1592 | ctx->input_xfrm = rxfh_dev.input_xfrm; | |
1593 | } | |
a5b6ee29 BH |
1594 | |
1595 | out: | |
87925151 EC |
1596 | if (locked) |
1597 | mutex_unlock(&dev->ethtool->rss_lock); | |
3de0b592 | 1598 | kfree(rss_config); |
a5b6ee29 BH |
1599 | return ret; |
1600 | } | |
1601 | ||
1da177e4 LT |
1602 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
1603 | { | |
1604 | struct ethtool_regs regs; | |
76fd8593 | 1605 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
1606 | void *regbuf; |
1607 | int reglen, ret; | |
1608 | ||
1609 | if (!ops->get_regs || !ops->get_regs_len) | |
1610 | return -EOPNOTSUPP; | |
1611 | ||
1612 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
1613 | return -EFAULT; | |
1614 | ||
1615 | reglen = ops->get_regs_len(dev); | |
f9fc54d3 YL |
1616 | if (reglen <= 0) |
1617 | return reglen; | |
1618 | ||
1da177e4 LT |
1619 | if (regs.len > reglen) |
1620 | regs.len = reglen; | |
1621 | ||
ef76c77a DC |
1622 | regbuf = vzalloc(reglen); |
1623 | if (!regbuf) | |
1624 | return -ENOMEM; | |
1da177e4 | 1625 | |
0ee4e769 VD |
1626 | if (regs.len < reglen) |
1627 | reglen = regs.len; | |
1628 | ||
1da177e4 LT |
1629 | ops->get_regs(dev, ®s, regbuf); |
1630 | ||
1631 | ret = -EFAULT; | |
1632 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
1633 | goto out; | |
1634 | useraddr += offsetof(struct ethtool_regs, data); | |
0ee4e769 | 1635 | if (copy_to_user(useraddr, regbuf, reglen)) |
1da177e4 LT |
1636 | goto out; |
1637 | ret = 0; | |
1638 | ||
1639 | out: | |
a77f5db3 | 1640 | vfree(regbuf); |
1da177e4 LT |
1641 | return ret; |
1642 | } | |
1643 | ||
d73d3a8c BH |
1644 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
1645 | { | |
1646 | struct ethtool_value reset; | |
1647 | int ret; | |
1648 | ||
1649 | if (!dev->ethtool_ops->reset) | |
1650 | return -EOPNOTSUPP; | |
1651 | ||
caa93b7c | 1652 | if (dev->ethtool->module_fw_flash_in_progress) |
31e0aa99 DR |
1653 | return -EBUSY; |
1654 | ||
d73d3a8c BH |
1655 | if (copy_from_user(&reset, useraddr, sizeof(reset))) |
1656 | return -EFAULT; | |
1657 | ||
1658 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
1659 | if (ret) | |
1660 | return ret; | |
1661 | ||
1662 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
1663 | return -EFAULT; | |
1664 | return 0; | |
1665 | } | |
1666 | ||
1da177e4 LT |
1667 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
1668 | { | |
5ff223e8 | 1669 | struct ethtool_wolinfo wol; |
1da177e4 LT |
1670 | |
1671 | if (!dev->ethtool_ops->get_wol) | |
1672 | return -EOPNOTSUPP; | |
1673 | ||
5ff223e8 | 1674 | memset(&wol, 0, sizeof(struct ethtool_wolinfo)); |
1675 | wol.cmd = ETHTOOL_GWOL; | |
1da177e4 LT |
1676 | dev->ethtool_ops->get_wol(dev, &wol); |
1677 | ||
1678 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
1679 | return -EFAULT; | |
1680 | return 0; | |
1681 | } | |
1682 | ||
1683 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
1684 | { | |
55b24334 | 1685 | struct ethtool_wolinfo wol, cur_wol; |
61941143 | 1686 | int ret; |
1da177e4 | 1687 | |
55b24334 | 1688 | if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) |
1da177e4 LT |
1689 | return -EOPNOTSUPP; |
1690 | ||
55b24334 JC |
1691 | memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); |
1692 | cur_wol.cmd = ETHTOOL_GWOL; | |
1693 | dev->ethtool_ops->get_wol(dev, &cur_wol); | |
1694 | ||
1da177e4 LT |
1695 | if (copy_from_user(&wol, useraddr, sizeof(wol))) |
1696 | return -EFAULT; | |
1697 | ||
55b24334 JC |
1698 | if (wol.wolopts & ~cur_wol.supported) |
1699 | return -EINVAL; | |
1700 | ||
2bddad9e JC |
1701 | if (wol.wolopts == cur_wol.wolopts && |
1702 | !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) | |
55b24334 JC |
1703 | return 0; |
1704 | ||
61941143 HK |
1705 | ret = dev->ethtool_ops->set_wol(dev, &wol); |
1706 | if (ret) | |
1707 | return ret; | |
1708 | ||
3ebbd9f6 | 1709 | dev->ethtool->wol_enabled = !!wol.wolopts; |
67bffa79 | 1710 | ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); |
61941143 HK |
1711 | |
1712 | return 0; | |
1da177e4 LT |
1713 | } |
1714 | ||
0b3100bc HK |
1715 | static void eee_to_keee(struct ethtool_keee *keee, |
1716 | const struct ethtool_eee *eee) | |
1717 | { | |
1718 | memset(keee, 0, sizeof(*keee)); | |
1719 | ||
0b3100bc HK |
1720 | keee->eee_enabled = eee->eee_enabled; |
1721 | keee->tx_lpi_enabled = eee->tx_lpi_enabled; | |
1722 | keee->tx_lpi_timer = eee->tx_lpi_timer; | |
1f069de6 | 1723 | |
1f069de6 HK |
1724 | ethtool_convert_legacy_u32_to_link_mode(keee->advertised, |
1725 | eee->advertised); | |
0b3100bc HK |
1726 | } |
1727 | ||
1728 | static void keee_to_eee(struct ethtool_eee *eee, | |
1729 | const struct ethtool_keee *keee) | |
1730 | { | |
292fac46 AL |
1731 | bool overflow; |
1732 | ||
0b3100bc HK |
1733 | memset(eee, 0, sizeof(*eee)); |
1734 | ||
0b3100bc HK |
1735 | eee->eee_active = keee->eee_active; |
1736 | eee->eee_enabled = keee->eee_enabled; | |
1737 | eee->tx_lpi_enabled = keee->tx_lpi_enabled; | |
1738 | eee->tx_lpi_timer = keee->tx_lpi_timer; | |
1f069de6 | 1739 | |
292fac46 AL |
1740 | overflow = !ethtool_convert_link_mode_to_legacy_u32(&eee->supported, |
1741 | keee->supported); | |
1742 | ethtool_convert_link_mode_to_legacy_u32(&eee->advertised, | |
1743 | keee->advertised); | |
1744 | ethtool_convert_link_mode_to_legacy_u32(&eee->lp_advertised, | |
1745 | keee->lp_advertised); | |
1746 | if (overflow) | |
1747 | pr_warn("Ethtool ioctl interface doesn't support passing EEE linkmodes beyond bit 32\n"); | |
0b3100bc HK |
1748 | } |
1749 | ||
80f12ecc YM |
1750 | static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
1751 | { | |
0b3100bc HK |
1752 | struct ethtool_keee keee; |
1753 | struct ethtool_eee eee; | |
80f12ecc YM |
1754 | int rc; |
1755 | ||
1756 | if (!dev->ethtool_ops->get_eee) | |
1757 | return -EOPNOTSUPP; | |
1758 | ||
0b3100bc HK |
1759 | memset(&keee, 0, sizeof(keee)); |
1760 | rc = dev->ethtool_ops->get_eee(dev, &keee); | |
80f12ecc YM |
1761 | if (rc) |
1762 | return rc; | |
1763 | ||
0b3100bc HK |
1764 | keee_to_eee(&eee, &keee); |
1765 | if (copy_to_user(useraddr, &eee, sizeof(eee))) | |
80f12ecc YM |
1766 | return -EFAULT; |
1767 | ||
1768 | return 0; | |
1769 | } | |
1770 | ||
1771 | static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) | |
1772 | { | |
0b3100bc HK |
1773 | struct ethtool_keee keee; |
1774 | struct ethtool_eee eee; | |
6c5bc8fe | 1775 | int ret; |
80f12ecc YM |
1776 | |
1777 | if (!dev->ethtool_ops->set_eee) | |
1778 | return -EOPNOTSUPP; | |
1779 | ||
0b3100bc | 1780 | if (copy_from_user(&eee, useraddr, sizeof(eee))) |
80f12ecc YM |
1781 | return -EFAULT; |
1782 | ||
0b3100bc HK |
1783 | eee_to_keee(&keee, &eee); |
1784 | ret = dev->ethtool_ops->set_eee(dev, &keee); | |
6c5bc8fe MK |
1785 | if (!ret) |
1786 | ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); | |
1787 | return ret; | |
80f12ecc YM |
1788 | } |
1789 | ||
1da177e4 LT |
1790 | static int ethtool_nway_reset(struct net_device *dev) |
1791 | { | |
1792 | if (!dev->ethtool_ops->nway_reset) | |
1793 | return -EOPNOTSUPP; | |
1794 | ||
1795 | return dev->ethtool_ops->nway_reset(dev); | |
1796 | } | |
1797 | ||
e596e6e4 BH |
1798 | static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
1799 | { | |
1800 | struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; | |
3d2b847f | 1801 | int link = __ethtool_get_link(dev); |
e596e6e4 | 1802 | |
3d2b847f MK |
1803 | if (link < 0) |
1804 | return link; | |
e596e6e4 | 1805 | |
3d2b847f | 1806 | edata.data = link; |
e596e6e4 BH |
1807 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
1808 | return -EFAULT; | |
1809 | return 0; | |
1810 | } | |
1811 | ||
081d094e BH |
1812 | static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
1813 | int (*getter)(struct net_device *, | |
1814 | struct ethtool_eeprom *, u8 *), | |
1815 | u32 total_len) | |
1da177e4 LT |
1816 | { |
1817 | struct ethtool_eeprom eeprom; | |
b131dd5d MSB |
1818 | void __user *userbuf = useraddr + sizeof(eeprom); |
1819 | u32 bytes_remaining; | |
1da177e4 | 1820 | u8 *data; |
b131dd5d | 1821 | int ret = 0; |
1da177e4 | 1822 | |
1da177e4 LT |
1823 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
1824 | return -EFAULT; | |
1825 | ||
1826 | /* Check for wrap and zero */ | |
1827 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1828 | return -EINVAL; | |
1829 | ||
1830 | /* Check for exceeding total eeprom len */ | |
081d094e | 1831 | if (eeprom.offset + eeprom.len > total_len) |
1da177e4 LT |
1832 | return -EINVAL; |
1833 | ||
80ec82e3 | 1834 | data = kzalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1835 | if (!data) |
1836 | return -ENOMEM; | |
1837 | ||
b131dd5d MSB |
1838 | bytes_remaining = eeprom.len; |
1839 | while (bytes_remaining > 0) { | |
1840 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1841 | ||
081d094e | 1842 | ret = getter(dev, &eeprom, data); |
b131dd5d MSB |
1843 | if (ret) |
1844 | break; | |
b9bbc4c1 HK |
1845 | if (!eeprom.len) { |
1846 | ret = -EIO; | |
1847 | break; | |
1848 | } | |
b131dd5d MSB |
1849 | if (copy_to_user(userbuf, data, eeprom.len)) { |
1850 | ret = -EFAULT; | |
1851 | break; | |
1852 | } | |
1853 | userbuf += eeprom.len; | |
1854 | eeprom.offset += eeprom.len; | |
1855 | bytes_remaining -= eeprom.len; | |
1856 | } | |
1da177e4 | 1857 | |
c5835df9 MSB |
1858 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1859 | eeprom.offset -= eeprom.len; | |
1860 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1861 | ret = -EFAULT; | |
1862 | ||
1da177e4 LT |
1863 | kfree(data); |
1864 | return ret; | |
1865 | } | |
1866 | ||
081d094e BH |
1867 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1868 | { | |
1869 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1870 | ||
e0fb6fb6 GR |
1871 | if (!ops->get_eeprom || !ops->get_eeprom_len || |
1872 | !ops->get_eeprom_len(dev)) | |
081d094e BH |
1873 | return -EOPNOTSUPP; |
1874 | ||
1875 | return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, | |
1876 | ops->get_eeprom_len(dev)); | |
1877 | } | |
1878 | ||
1da177e4 LT |
1879 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
1880 | { | |
1881 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1882 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1883 | void __user *userbuf = useraddr + sizeof(eeprom); |
1884 | u32 bytes_remaining; | |
1da177e4 | 1885 | u8 *data; |
b131dd5d | 1886 | int ret = 0; |
1da177e4 | 1887 | |
e0fb6fb6 GR |
1888 | if (!ops->set_eeprom || !ops->get_eeprom_len || |
1889 | !ops->get_eeprom_len(dev)) | |
1da177e4 LT |
1890 | return -EOPNOTSUPP; |
1891 | ||
1892 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1893 | return -EFAULT; | |
1894 | ||
1895 | /* Check for wrap and zero */ | |
1896 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1897 | return -EINVAL; | |
1898 | ||
1899 | /* Check for exceeding total eeprom len */ | |
1900 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1901 | return -EINVAL; | |
1902 | ||
80ec82e3 | 1903 | data = kzalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1904 | if (!data) |
1905 | return -ENOMEM; | |
1906 | ||
b131dd5d MSB |
1907 | bytes_remaining = eeprom.len; |
1908 | while (bytes_remaining > 0) { | |
1909 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1910 | ||
1911 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1912 | ret = -EFAULT; | |
1913 | break; | |
1914 | } | |
1915 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1916 | if (ret) | |
1917 | break; | |
1918 | userbuf += eeprom.len; | |
1919 | eeprom.offset += eeprom.len; | |
1920 | bytes_remaining -= eeprom.len; | |
1921 | } | |
1da177e4 | 1922 | |
1da177e4 LT |
1923 | kfree(data); |
1924 | return ret; | |
1925 | } | |
1926 | ||
97f8aefb | 1927 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1928 | void __user *useraddr) | |
1da177e4 | 1929 | { |
8e557421 | 1930 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
f3ccfda1 | 1931 | struct kernel_ethtool_coalesce kernel_coalesce = {}; |
31610711 | 1932 | int ret; |
1da177e4 LT |
1933 | |
1934 | if (!dev->ethtool_ops->get_coalesce) | |
1935 | return -EOPNOTSUPP; | |
1936 | ||
f3ccfda1 YM |
1937 | ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, |
1938 | NULL); | |
31610711 HK |
1939 | if (ret) |
1940 | return ret; | |
1da177e4 LT |
1941 | |
1942 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1943 | return -EFAULT; | |
1944 | return 0; | |
1945 | } | |
1946 | ||
95cddcb5 JK |
1947 | static bool |
1948 | ethtool_set_coalesce_supported(struct net_device *dev, | |
1949 | struct ethtool_coalesce *coalesce) | |
1950 | { | |
1951 | u32 supported_params = dev->ethtool_ops->supported_coalesce_params; | |
1952 | u32 nonzero_params = 0; | |
1953 | ||
95cddcb5 JK |
1954 | if (coalesce->rx_coalesce_usecs) |
1955 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS; | |
1956 | if (coalesce->rx_max_coalesced_frames) | |
1957 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; | |
1958 | if (coalesce->rx_coalesce_usecs_irq) | |
1959 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; | |
1960 | if (coalesce->rx_max_coalesced_frames_irq) | |
1961 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; | |
1962 | if (coalesce->tx_coalesce_usecs) | |
1963 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS; | |
1964 | if (coalesce->tx_max_coalesced_frames) | |
1965 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; | |
1966 | if (coalesce->tx_coalesce_usecs_irq) | |
1967 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; | |
1968 | if (coalesce->tx_max_coalesced_frames_irq) | |
1969 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; | |
1970 | if (coalesce->stats_block_coalesce_usecs) | |
1971 | nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; | |
1972 | if (coalesce->use_adaptive_rx_coalesce) | |
1973 | nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; | |
1974 | if (coalesce->use_adaptive_tx_coalesce) | |
1975 | nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; | |
1976 | if (coalesce->pkt_rate_low) | |
1977 | nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; | |
1978 | if (coalesce->rx_coalesce_usecs_low) | |
1979 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; | |
1980 | if (coalesce->rx_max_coalesced_frames_low) | |
1981 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; | |
1982 | if (coalesce->tx_coalesce_usecs_low) | |
1983 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; | |
1984 | if (coalesce->tx_max_coalesced_frames_low) | |
1985 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; | |
1986 | if (coalesce->pkt_rate_high) | |
1987 | nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; | |
1988 | if (coalesce->rx_coalesce_usecs_high) | |
1989 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; | |
1990 | if (coalesce->rx_max_coalesced_frames_high) | |
1991 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; | |
1992 | if (coalesce->tx_coalesce_usecs_high) | |
1993 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; | |
1994 | if (coalesce->tx_max_coalesced_frames_high) | |
1995 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; | |
1996 | if (coalesce->rate_sample_interval) | |
1997 | nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; | |
1998 | ||
1999 | return (supported_params & nonzero_params) == nonzero_params; | |
2000 | } | |
2001 | ||
97f8aefb | 2002 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
2003 | void __user *useraddr) | |
1da177e4 | 2004 | { |
f3ccfda1 | 2005 | struct kernel_ethtool_coalesce kernel_coalesce = {}; |
1da177e4 | 2006 | struct ethtool_coalesce coalesce; |
0cf3eac8 | 2007 | int ret; |
1da177e4 | 2008 | |
0276af21 | 2009 | if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) |
1da177e4 LT |
2010 | return -EOPNOTSUPP; |
2011 | ||
f3ccfda1 YM |
2012 | ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, |
2013 | NULL); | |
2014 | if (ret) | |
2015 | return ret; | |
2016 | ||
1da177e4 LT |
2017 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) |
2018 | return -EFAULT; | |
2019 | ||
95cddcb5 JK |
2020 | if (!ethtool_set_coalesce_supported(dev, &coalesce)) |
2021 | return -EOPNOTSUPP; | |
2022 | ||
f3ccfda1 YM |
2023 | ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, |
2024 | NULL); | |
0cf3eac8 MK |
2025 | if (!ret) |
2026 | ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); | |
2027 | return ret; | |
1da177e4 LT |
2028 | } |
2029 | ||
2030 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
2031 | { | |
8e557421 | 2032 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
74624944 | 2033 | struct kernel_ethtool_ringparam kernel_ringparam = {}; |
1da177e4 LT |
2034 | |
2035 | if (!dev->ethtool_ops->get_ringparam) | |
2036 | return -EOPNOTSUPP; | |
2037 | ||
74624944 HC |
2038 | dev->ethtool_ops->get_ringparam(dev, &ringparam, |
2039 | &kernel_ringparam, NULL); | |
1da177e4 LT |
2040 | |
2041 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
2042 | return -EFAULT; | |
2043 | return 0; | |
2044 | } | |
2045 | ||
2046 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
2047 | { | |
37e2d99b | 2048 | struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; |
74624944 | 2049 | struct kernel_ethtool_ringparam kernel_ringparam; |
bc9d1c99 | 2050 | int ret; |
1da177e4 | 2051 | |
37e2d99b | 2052 | if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) |
1da177e4 LT |
2053 | return -EOPNOTSUPP; |
2054 | ||
2055 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
2056 | return -EFAULT; | |
2057 | ||
74624944 | 2058 | dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); |
37e2d99b EE |
2059 | |
2060 | /* ensure new ring parameters are within the maximums */ | |
2061 | if (ringparam.rx_pending > max.rx_max_pending || | |
2062 | ringparam.rx_mini_pending > max.rx_mini_max_pending || | |
2063 | ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || | |
2064 | ringparam.tx_pending > max.tx_max_pending) | |
2065 | return -EINVAL; | |
2066 | ||
74624944 HC |
2067 | ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, |
2068 | &kernel_ringparam, NULL); | |
bc9d1c99 MK |
2069 | if (!ret) |
2070 | ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); | |
2071 | return ret; | |
1da177e4 LT |
2072 | } |
2073 | ||
8b5933c3 | 2074 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
2075 | void __user *useraddr) | |
2076 | { | |
2077 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
2078 | ||
2079 | if (!dev->ethtool_ops->get_channels) | |
2080 | return -EOPNOTSUPP; | |
2081 | ||
2082 | dev->ethtool_ops->get_channels(dev, &channels); | |
2083 | ||
2084 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
2085 | return -EFAULT; | |
2086 | return 0; | |
2087 | } | |
2088 | ||
2089 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
2090 | void __user *useraddr) | |
2091 | { | |
b8c8a2e2 | 2092 | struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; |
1661d346 | 2093 | u16 from_channel, to_channel; |
1661d346 | 2094 | unsigned int i; |
546379b9 | 2095 | int ret; |
8b5933c3 | 2096 | |
8bf36862 | 2097 | if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
8b5933c3 | 2098 | return -EOPNOTSUPP; |
2099 | ||
2100 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
2101 | return -EFAULT; | |
2102 | ||
b8c8a2e2 | 2103 | dev->ethtool_ops->get_channels(dev, &curr); |
8bf36862 | 2104 | |
75c36dbb JK |
2105 | if (channels.rx_count == curr.rx_count && |
2106 | channels.tx_count == curr.tx_count && | |
2107 | channels.combined_count == curr.combined_count && | |
2108 | channels.other_count == curr.other_count) | |
2109 | return 0; | |
2110 | ||
8bf36862 | 2111 | /* ensure new counts are within the maximums */ |
b8c8a2e2 JK |
2112 | if (channels.rx_count > curr.max_rx || |
2113 | channels.tx_count > curr.max_tx || | |
2114 | channels.combined_count > curr.max_combined || | |
2115 | channels.other_count > curr.max_other) | |
8bf36862 KJ |
2116 | return -EINVAL; |
2117 | ||
7be92514 JK |
2118 | /* ensure there is at least one RX and one TX channel */ |
2119 | if (!channels.combined_count && | |
2120 | (!channels.rx_count || !channels.tx_count)) | |
2121 | return -EINVAL; | |
2122 | ||
916b7d31 MA |
2123 | ret = ethtool_check_max_channel(dev, channels, NULL); |
2124 | if (ret) | |
2125 | return ret; | |
d4ab4286 | 2126 | |
1661d346 JK |
2127 | /* Disabling channels, query zero-copy AF_XDP sockets */ |
2128 | from_channel = channels.combined_count + | |
2129 | min(channels.rx_count, channels.tx_count); | |
2130 | to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); | |
2131 | for (i = from_channel; i < to_channel; i++) | |
c4655761 | 2132 | if (xsk_get_pool_from_qid(dev, i)) |
1661d346 JK |
2133 | return -EINVAL; |
2134 | ||
546379b9 MK |
2135 | ret = dev->ethtool_ops->set_channels(dev, &channels); |
2136 | if (!ret) | |
2137 | ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); | |
2138 | return ret; | |
8b5933c3 | 2139 | } |
2140 | ||
1da177e4 LT |
2141 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
2142 | { | |
e83887f6 | 2143 | struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; |
1da177e4 LT |
2144 | |
2145 | if (!dev->ethtool_ops->get_pauseparam) | |
2146 | return -EOPNOTSUPP; | |
2147 | ||
2148 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
2149 | ||
2150 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
2151 | return -EFAULT; | |
2152 | return 0; | |
2153 | } | |
2154 | ||
2155 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
2156 | { | |
2157 | struct ethtool_pauseparam pauseparam; | |
bf37faa3 | 2158 | int ret; |
1da177e4 | 2159 | |
e1b90c41 | 2160 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
2161 | return -EOPNOTSUPP; |
2162 | ||
2163 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
2164 | return -EFAULT; | |
2165 | ||
bf37faa3 MK |
2166 | ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); |
2167 | if (!ret) | |
2168 | ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); | |
2169 | return ret; | |
1da177e4 LT |
2170 | } |
2171 | ||
1da177e4 LT |
2172 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
2173 | { | |
2174 | struct ethtool_test test; | |
76fd8593 | 2175 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 2176 | u64 *data; |
ff03d49f | 2177 | int ret, test_len; |
1da177e4 | 2178 | |
a9828ec6 | 2179 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
2180 | return -EOPNOTSUPP; |
2181 | ||
a9828ec6 | 2182 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
2183 | if (test_len < 0) |
2184 | return test_len; | |
2185 | WARN_ON(test_len == 0); | |
2186 | ||
1da177e4 LT |
2187 | if (copy_from_user(&test, useraddr, sizeof(test))) |
2188 | return -EFAULT; | |
2189 | ||
ff03d49f | 2190 | test.len = test_len; |
80ec82e3 | 2191 | data = kcalloc(test_len, sizeof(u64), GFP_USER); |
1da177e4 LT |
2192 | if (!data) |
2193 | return -ENOMEM; | |
2194 | ||
77e9b2ab | 2195 | netif_testing_on(dev); |
1da177e4 | 2196 | ops->self_test(dev, &test, data); |
77e9b2ab | 2197 | netif_testing_off(dev); |
1da177e4 LT |
2198 | |
2199 | ret = -EFAULT; | |
2200 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
2201 | goto out; | |
2202 | useraddr += sizeof(test); | |
ed717613 | 2203 | if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) |
1da177e4 LT |
2204 | goto out; |
2205 | ret = 0; | |
2206 | ||
2207 | out: | |
2208 | kfree(data); | |
2209 | return ret; | |
2210 | } | |
2211 | ||
2212 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
2213 | { | |
2214 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
2215 | u8 *data; |
2216 | int ret; | |
2217 | ||
1da177e4 LT |
2218 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
2219 | return -EFAULT; | |
2220 | ||
340ae165 | 2221 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
2222 | if (ret < 0) |
2223 | return ret; | |
4d1ceea8 AS |
2224 | if (ret > S32_MAX / ETH_GSTRING_LEN) |
2225 | return -ENOMEM; | |
2226 | WARN_ON_ONCE(!ret); | |
a9828ec6 BH |
2227 | |
2228 | gstrings.len = ret; | |
1da177e4 | 2229 | |
3d883026 LR |
2230 | if (gstrings.len) { |
2231 | data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); | |
2232 | if (!data) | |
2233 | return -ENOMEM; | |
2234 | ||
2235 | __ethtool_get_strings(dev, gstrings.string_set, data); | |
2236 | } else { | |
2237 | data = NULL; | |
2238 | } | |
1da177e4 LT |
2239 | |
2240 | ret = -EFAULT; | |
2241 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
2242 | goto out; | |
2243 | useraddr += sizeof(gstrings); | |
4d1ceea8 | 2244 | if (gstrings.len && |
ed717613 GS |
2245 | copy_to_user(useraddr, data, |
2246 | array_size(gstrings.len, ETH_GSTRING_LEN))) | |
1da177e4 LT |
2247 | goto out; |
2248 | ret = 0; | |
2249 | ||
340ae165 | 2250 | out: |
4d1ceea8 | 2251 | vfree(data); |
1da177e4 LT |
2252 | return ret; |
2253 | } | |
2254 | ||
7888fe53 AD |
2255 | __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) |
2256 | { | |
2257 | va_list args; | |
2258 | ||
2259 | va_start(args, fmt); | |
2260 | vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); | |
2261 | va_end(args); | |
2262 | ||
2263 | *data += ETH_GSTRING_LEN; | |
2264 | } | |
2265 | EXPORT_SYMBOL(ethtool_sprintf); | |
2266 | ||
2a48c635 | 2267 | void ethtool_puts(u8 **data, const char *str) |
2268 | { | |
2269 | strscpy(*data, str, ETH_GSTRING_LEN); | |
2270 | *data += ETH_GSTRING_LEN; | |
2271 | } | |
2272 | EXPORT_SYMBOL(ethtool_puts); | |
2273 | ||
1da177e4 LT |
2274 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) |
2275 | { | |
2276 | struct ethtool_value id; | |
68f512f2 | 2277 | static bool busy; |
c03a14e8 | 2278 | const struct ethtool_ops *ops = dev->ethtool_ops; |
5ae21950 | 2279 | netdevice_tracker dev_tracker; |
68f512f2 | 2280 | int rc; |
1da177e4 | 2281 | |
c03a14e8 | 2282 | if (!ops->set_phys_id) |
1da177e4 LT |
2283 | return -EOPNOTSUPP; |
2284 | ||
68f512f2 BH |
2285 | if (busy) |
2286 | return -EBUSY; | |
2287 | ||
1da177e4 LT |
2288 | if (copy_from_user(&id, useraddr, sizeof(id))) |
2289 | return -EFAULT; | |
2290 | ||
c03a14e8 | 2291 | rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 2292 | if (rc < 0) |
68f512f2 BH |
2293 | return rc; |
2294 | ||
2295 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
2296 | * removal of the device. | |
2297 | */ | |
2298 | busy = true; | |
d62607c3 | 2299 | netdev_hold(dev, &dev_tracker, GFP_KERNEL); |
68f512f2 BH |
2300 | rtnl_unlock(); |
2301 | ||
2302 | if (rc == 0) { | |
2303 | /* Driver will handle this itself */ | |
2304 | schedule_timeout_interruptible( | |
143780c6 | 2305 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 2306 | } else { |
fce55922 | 2307 | /* Driver expects to be called at twice the frequency in rc */ |
2adc6edc | 2308 | int n = rc * 2, interval = HZ / n; |
64a8f8f7 MK |
2309 | u64 count = mul_u32_u32(n, id.data); |
2310 | u64 i = 0; | |
fce55922 | 2311 | |
68f512f2 | 2312 | do { |
2adc6edc EC |
2313 | rtnl_lock(); |
2314 | rc = ops->set_phys_id(dev, | |
2315 | (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); | |
2316 | rtnl_unlock(); | |
2317 | if (rc) | |
2318 | break; | |
2319 | schedule_timeout_interruptible(interval); | |
2320 | } while (!signal_pending(current) && (!id.data || i < count)); | |
68f512f2 BH |
2321 | } |
2322 | ||
2323 | rtnl_lock(); | |
d62607c3 | 2324 | netdev_put(dev, &dev_tracker); |
68f512f2 BH |
2325 | busy = false; |
2326 | ||
c03a14e8 | 2327 | (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
68f512f2 | 2328 | return rc; |
1da177e4 LT |
2329 | } |
2330 | ||
2331 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
2332 | { | |
2333 | struct ethtool_stats stats; | |
76fd8593 | 2334 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 2335 | u64 *data; |
ff03d49f | 2336 | int ret, n_stats; |
1da177e4 | 2337 | |
a9828ec6 | 2338 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
2339 | return -EOPNOTSUPP; |
2340 | ||
a9828ec6 | 2341 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
2342 | if (n_stats < 0) |
2343 | return n_stats; | |
4d1ceea8 AS |
2344 | if (n_stats > S32_MAX / sizeof(u64)) |
2345 | return -ENOMEM; | |
2346 | WARN_ON_ONCE(!n_stats); | |
1da177e4 LT |
2347 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
2348 | return -EFAULT; | |
2349 | ||
ff03d49f | 2350 | stats.n_stats = n_stats; |
1da177e4 | 2351 | |
3d883026 LR |
2352 | if (n_stats) { |
2353 | data = vzalloc(array_size(n_stats, sizeof(u64))); | |
2354 | if (!data) | |
2355 | return -ENOMEM; | |
2356 | ops->get_ethtool_stats(dev, &stats, data); | |
2357 | } else { | |
2358 | data = NULL; | |
2359 | } | |
1da177e4 LT |
2360 | |
2361 | ret = -EFAULT; | |
2362 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
2363 | goto out; | |
2364 | useraddr += sizeof(stats); | |
3dd14996 | 2365 | if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) |
1da177e4 LT |
2366 | goto out; |
2367 | ret = 0; | |
2368 | ||
2369 | out: | |
4d1ceea8 | 2370 | vfree(data); |
1da177e4 LT |
2371 | return ret; |
2372 | } | |
2373 | ||
201ed315 | 2374 | static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) |
f3a40945 | 2375 | { |
f3a40945 AL |
2376 | if (n_stats < 0) |
2377 | return n_stats; | |
4d1ceea8 AS |
2378 | if (n_stats > S32_MAX / sizeof(u64)) |
2379 | return -ENOMEM; | |
9deb1e9f DT |
2380 | if (WARN_ON_ONCE(!n_stats)) |
2381 | return -EOPNOTSUPP; | |
f3a40945 | 2382 | |
201ed315 DT |
2383 | *data = vzalloc(array_size(n_stats, sizeof(u64))); |
2384 | if (!*data) | |
2385 | return -ENOMEM; | |
2386 | ||
2387 | return 0; | |
2388 | } | |
2389 | ||
2390 | static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, | |
2391 | struct ethtool_stats *stats, | |
2392 | u64 **data) | |
2393 | { | |
2394 | const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; | |
2395 | int n_stats, ret; | |
2396 | ||
2397 | if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) | |
2398 | return -EOPNOTSUPP; | |
2399 | ||
2400 | n_stats = phy_ops->get_sset_count(phydev); | |
2401 | ||
2402 | ret = ethtool_vzalloc_stats_array(n_stats, data); | |
2403 | if (ret) | |
2404 | return ret; | |
2405 | ||
2406 | stats->n_stats = n_stats; | |
2407 | return phy_ops->get_stats(phydev, stats, *data); | |
2408 | } | |
2409 | ||
2410 | static int ethtool_get_phy_stats_ethtool(struct net_device *dev, | |
2411 | struct ethtool_stats *stats, | |
2412 | u64 **data) | |
2413 | { | |
2414 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2415 | int n_stats, ret; | |
2416 | ||
0dcc53ab | 2417 | if (!ops || !ops->get_sset_count || !ops->get_ethtool_phy_stats) |
201ed315 DT |
2418 | return -EOPNOTSUPP; |
2419 | ||
2420 | n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); | |
2421 | ||
2422 | ret = ethtool_vzalloc_stats_array(n_stats, data); | |
2423 | if (ret) | |
2424 | return ret; | |
2425 | ||
2426 | stats->n_stats = n_stats; | |
2427 | ops->get_ethtool_phy_stats(dev, stats, *data); | |
2428 | ||
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) | |
2433 | { | |
2434 | struct phy_device *phydev = dev->phydev; | |
2435 | struct ethtool_stats stats; | |
2436 | u64 *data = NULL; | |
2437 | int ret = -EOPNOTSUPP; | |
2438 | ||
f3a40945 AL |
2439 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
2440 | return -EFAULT; | |
2441 | ||
201ed315 DT |
2442 | if (phydev) |
2443 | ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); | |
f3a40945 | 2444 | |
201ed315 DT |
2445 | if (ret == -EOPNOTSUPP) |
2446 | ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); | |
3d883026 | 2447 | |
201ed315 DT |
2448 | if (ret) |
2449 | goto out; | |
f3a40945 | 2450 | |
201ed315 DT |
2451 | if (copy_to_user(useraddr, &stats, sizeof(stats))) { |
2452 | ret = -EFAULT; | |
f3a40945 | 2453 | goto out; |
201ed315 DT |
2454 | } |
2455 | ||
f3a40945 | 2456 | useraddr += sizeof(stats); |
201ed315 DT |
2457 | if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) |
2458 | ret = -EFAULT; | |
f3a40945 AL |
2459 | |
2460 | out: | |
4d1ceea8 | 2461 | vfree(data); |
f3a40945 AL |
2462 | return ret; |
2463 | } | |
2464 | ||
0bf0519d | 2465 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
2466 | { |
2467 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 2468 | |
313674af | 2469 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
2470 | return -EFAULT; |
2471 | ||
313674af MW |
2472 | if (epaddr.size < dev->addr_len) |
2473 | return -ETOOSMALL; | |
2474 | epaddr.size = dev->addr_len; | |
a6f9a705 | 2475 | |
a6f9a705 | 2476 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 2477 | return -EFAULT; |
a6f9a705 | 2478 | useraddr += sizeof(epaddr); |
313674af MW |
2479 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
2480 | return -EFAULT; | |
2481 | return 0; | |
a6f9a705 JW |
2482 | } |
2483 | ||
13c99b24 JG |
2484 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
2485 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 2486 | { |
8e557421 | 2487 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 2488 | |
13c99b24 | 2489 | if (!actor) |
3ae7c0b2 JG |
2490 | return -EOPNOTSUPP; |
2491 | ||
13c99b24 | 2492 | edata.data = actor(dev); |
3ae7c0b2 JG |
2493 | |
2494 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
2495 | return -EFAULT; | |
2496 | return 0; | |
2497 | } | |
2498 | ||
13c99b24 JG |
2499 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
2500 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
2501 | { |
2502 | struct ethtool_value edata; | |
2503 | ||
13c99b24 | 2504 | if (!actor) |
3ae7c0b2 JG |
2505 | return -EOPNOTSUPP; |
2506 | ||
2507 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2508 | return -EFAULT; | |
2509 | ||
13c99b24 | 2510 | actor(dev, edata.data); |
339bf024 JG |
2511 | return 0; |
2512 | } | |
2513 | ||
13c99b24 JG |
2514 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
2515 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
2516 | { |
2517 | struct ethtool_value edata; | |
2518 | ||
13c99b24 | 2519 | if (!actor) |
339bf024 JG |
2520 | return -EOPNOTSUPP; |
2521 | ||
2522 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2523 | return -EFAULT; | |
2524 | ||
13c99b24 | 2525 | return actor(dev, edata.data); |
339bf024 JG |
2526 | } |
2527 | ||
095cfcfe JK |
2528 | static int |
2529 | ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) | |
05c6a8d7 | 2530 | { |
1af0a094 JK |
2531 | if (!dev->ethtool_ops->flash_device) { |
2532 | req->devlink = netdev_to_devlink_get(dev); | |
2533 | return 0; | |
2534 | } | |
786f5281 | 2535 | |
095cfcfe | 2536 | return dev->ethtool_ops->flash_device(dev, &req->efl); |
05c6a8d7 AK |
2537 | } |
2538 | ||
29dd54b7 AC |
2539 | static int ethtool_set_dump(struct net_device *dev, |
2540 | void __user *useraddr) | |
2541 | { | |
2542 | struct ethtool_dump dump; | |
2543 | ||
2544 | if (!dev->ethtool_ops->set_dump) | |
2545 | return -EOPNOTSUPP; | |
2546 | ||
2547 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2548 | return -EFAULT; | |
2549 | ||
2550 | return dev->ethtool_ops->set_dump(dev, &dump); | |
2551 | } | |
2552 | ||
2553 | static int ethtool_get_dump_flag(struct net_device *dev, | |
2554 | void __user *useraddr) | |
2555 | { | |
2556 | int ret; | |
2557 | struct ethtool_dump dump; | |
2558 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2559 | ||
c03a14e8 | 2560 | if (!ops->get_dump_flag) |
29dd54b7 AC |
2561 | return -EOPNOTSUPP; |
2562 | ||
2563 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2564 | return -EFAULT; | |
2565 | ||
2566 | ret = ops->get_dump_flag(dev, &dump); | |
2567 | if (ret) | |
2568 | return ret; | |
2569 | ||
2570 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
2571 | return -EFAULT; | |
2572 | return 0; | |
2573 | } | |
2574 | ||
2575 | static int ethtool_get_dump_data(struct net_device *dev, | |
2576 | void __user *useraddr) | |
2577 | { | |
2578 | int ret; | |
2579 | __u32 len; | |
2580 | struct ethtool_dump dump, tmp; | |
2581 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2582 | void *data = NULL; | |
2583 | ||
c03a14e8 | 2584 | if (!ops->get_dump_data || !ops->get_dump_flag) |
29dd54b7 AC |
2585 | return -EOPNOTSUPP; |
2586 | ||
2587 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2588 | return -EFAULT; | |
2589 | ||
2590 | memset(&tmp, 0, sizeof(tmp)); | |
2591 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
2592 | ret = ops->get_dump_flag(dev, &tmp); | |
2593 | if (ret) | |
2594 | return ret; | |
2595 | ||
c590b5e2 | 2596 | len = min(tmp.len, dump.len); |
29dd54b7 AC |
2597 | if (!len) |
2598 | return -EFAULT; | |
2599 | ||
c590b5e2 MS |
2600 | /* Don't ever let the driver think there's more space available |
2601 | * than it requested with .get_dump_flag(). | |
2602 | */ | |
2603 | dump.len = len; | |
2604 | ||
2605 | /* Always allocate enough space to hold the whole thing so that the | |
2606 | * driver does not need to check the length and bother with partial | |
2607 | * dumping. | |
2608 | */ | |
29dd54b7 AC |
2609 | data = vzalloc(tmp.len); |
2610 | if (!data) | |
2611 | return -ENOMEM; | |
2612 | ret = ops->get_dump_data(dev, &dump, data); | |
2613 | if (ret) | |
2614 | goto out; | |
2615 | ||
c590b5e2 MS |
2616 | /* There are two sane possibilities: |
2617 | * 1. The driver's .get_dump_data() does not touch dump.len. | |
2618 | * 2. Or it may set dump.len to how much it really writes, which | |
2619 | * should be tmp.len (or len if it can do a partial dump). | |
2620 | * In any case respond to userspace with the actual length of data | |
2621 | * it's receiving. | |
2622 | */ | |
2623 | WARN_ON(dump.len != len && dump.len != tmp.len); | |
2624 | dump.len = len; | |
2625 | ||
29dd54b7 AC |
2626 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
2627 | ret = -EFAULT; | |
2628 | goto out; | |
2629 | } | |
2630 | useraddr += offsetof(struct ethtool_dump, data); | |
2631 | if (copy_to_user(useraddr, data, len)) | |
2632 | ret = -EFAULT; | |
2633 | out: | |
2634 | vfree(data); | |
2635 | return ret; | |
2636 | } | |
2637 | ||
c8f3a8c3 RC |
2638 | static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
2639 | { | |
2111375b KM |
2640 | struct kernel_ethtool_ts_info kernel_info; |
2641 | struct ethtool_ts_info info = {}; | |
5b071c59 | 2642 | int err; |
c8f3a8c3 | 2643 | |
2111375b | 2644 | err = __ethtool_get_ts_info(dev, &kernel_info); |
c8f3a8c3 RC |
2645 | if (err) |
2646 | return err; | |
2647 | ||
2111375b KM |
2648 | info.cmd = kernel_info.cmd; |
2649 | info.so_timestamping = kernel_info.so_timestamping; | |
2650 | info.phc_index = kernel_info.phc_index; | |
2651 | info.tx_types = kernel_info.tx_types; | |
2652 | info.rx_filters = kernel_info.rx_filters; | |
2653 | ||
c8f3a8c3 | 2654 | if (copy_to_user(useraddr, &info, sizeof(info))) |
5b071c59 | 2655 | return -EFAULT; |
c8f3a8c3 | 2656 | |
5b071c59 | 2657 | return 0; |
c8f3a8c3 RC |
2658 | } |
2659 | ||
95dfc7ef AL |
2660 | int ethtool_get_module_info_call(struct net_device *dev, |
2661 | struct ethtool_modinfo *modinfo) | |
2f438366 ES |
2662 | { |
2663 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2664 | struct phy_device *phydev = dev->phydev; | |
2665 | ||
caa93b7c | 2666 | if (dev->ethtool->module_fw_flash_in_progress) |
31e0aa99 DR |
2667 | return -EBUSY; |
2668 | ||
e679c9c1 RK |
2669 | if (dev->sfp_bus) |
2670 | return sfp_get_module_info(dev->sfp_bus, modinfo); | |
2671 | ||
2f438366 ES |
2672 | if (phydev && phydev->drv && phydev->drv->module_info) |
2673 | return phydev->drv->module_info(phydev, modinfo); | |
2674 | ||
2675 | if (ops->get_module_info) | |
2676 | return ops->get_module_info(dev, modinfo); | |
2677 | ||
2678 | return -EOPNOTSUPP; | |
2679 | } | |
2680 | ||
41c3cb6d SH |
2681 | static int ethtool_get_module_info(struct net_device *dev, |
2682 | void __user *useraddr) | |
2683 | { | |
2684 | int ret; | |
2685 | struct ethtool_modinfo modinfo; | |
41c3cb6d SH |
2686 | |
2687 | if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) | |
2688 | return -EFAULT; | |
2689 | ||
95dfc7ef | 2690 | ret = ethtool_get_module_info_call(dev, &modinfo); |
41c3cb6d SH |
2691 | if (ret) |
2692 | return ret; | |
2693 | ||
2694 | if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) | |
2695 | return -EFAULT; | |
2696 | ||
2697 | return 0; | |
2698 | } | |
2699 | ||
95dfc7ef AL |
2700 | int ethtool_get_module_eeprom_call(struct net_device *dev, |
2701 | struct ethtool_eeprom *ee, u8 *data) | |
2f438366 ES |
2702 | { |
2703 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2704 | struct phy_device *phydev = dev->phydev; | |
2705 | ||
caa93b7c | 2706 | if (dev->ethtool->module_fw_flash_in_progress) |
31e0aa99 DR |
2707 | return -EBUSY; |
2708 | ||
e679c9c1 RK |
2709 | if (dev->sfp_bus) |
2710 | return sfp_get_module_eeprom(dev->sfp_bus, ee, data); | |
2711 | ||
2f438366 ES |
2712 | if (phydev && phydev->drv && phydev->drv->module_eeprom) |
2713 | return phydev->drv->module_eeprom(phydev, ee, data); | |
2714 | ||
2715 | if (ops->get_module_eeprom) | |
2716 | return ops->get_module_eeprom(dev, ee, data); | |
2717 | ||
2718 | return -EOPNOTSUPP; | |
2719 | } | |
2720 | ||
41c3cb6d SH |
2721 | static int ethtool_get_module_eeprom(struct net_device *dev, |
2722 | void __user *useraddr) | |
2723 | { | |
2724 | int ret; | |
2725 | struct ethtool_modinfo modinfo; | |
41c3cb6d | 2726 | |
95dfc7ef | 2727 | ret = ethtool_get_module_info_call(dev, &modinfo); |
41c3cb6d SH |
2728 | if (ret) |
2729 | return ret; | |
2730 | ||
2f438366 | 2731 | return ethtool_get_any_eeprom(dev, useraddr, |
95dfc7ef | 2732 | ethtool_get_module_eeprom_call, |
41c3cb6d SH |
2733 | modinfo.eeprom_len); |
2734 | } | |
2735 | ||
f0db9b07 GV |
2736 | static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
2737 | { | |
2738 | switch (tuna->id) { | |
2739 | case ETHTOOL_RX_COPYBREAK: | |
1255a505 | 2740 | case ETHTOOL_TX_COPYBREAK: |
448f413a | 2741 | case ETHTOOL_TX_COPYBREAK_BUF_SIZE: |
f0db9b07 GV |
2742 | if (tuna->len != sizeof(u32) || |
2743 | tuna->type_id != ETHTOOL_TUNABLE_U32) | |
2744 | return -EINVAL; | |
2745 | break; | |
e1577c1c IK |
2746 | case ETHTOOL_PFC_PREVENTION_TOUT: |
2747 | if (tuna->len != sizeof(u16) || | |
2748 | tuna->type_id != ETHTOOL_TUNABLE_U16) | |
2749 | return -EINVAL; | |
2750 | break; | |
f0db9b07 GV |
2751 | default: |
2752 | return -EINVAL; | |
2753 | } | |
2754 | ||
2755 | return 0; | |
2756 | } | |
2757 | ||
2758 | static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) | |
2759 | { | |
2760 | int ret; | |
2761 | struct ethtool_tunable tuna; | |
2762 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2763 | void *data; | |
2764 | ||
2765 | if (!ops->get_tunable) | |
2766 | return -EOPNOTSUPP; | |
2767 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2768 | return -EFAULT; | |
2769 | ret = ethtool_tunable_valid(&tuna); | |
2770 | if (ret) | |
2771 | return ret; | |
80ec82e3 | 2772 | data = kzalloc(tuna.len, GFP_USER); |
f0db9b07 GV |
2773 | if (!data) |
2774 | return -ENOMEM; | |
2775 | ret = ops->get_tunable(dev, &tuna, data); | |
2776 | if (ret) | |
2777 | goto out; | |
2778 | useraddr += sizeof(tuna); | |
2779 | ret = -EFAULT; | |
2780 | if (copy_to_user(useraddr, data, tuna.len)) | |
2781 | goto out; | |
2782 | ret = 0; | |
2783 | ||
2784 | out: | |
2785 | kfree(data); | |
2786 | return ret; | |
2787 | } | |
2788 | ||
2789 | static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) | |
2790 | { | |
2791 | int ret; | |
2792 | struct ethtool_tunable tuna; | |
2793 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2794 | void *data; | |
2795 | ||
2796 | if (!ops->set_tunable) | |
2797 | return -EOPNOTSUPP; | |
2798 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2799 | return -EFAULT; | |
2800 | ret = ethtool_tunable_valid(&tuna); | |
2801 | if (ret) | |
2802 | return ret; | |
f0db9b07 | 2803 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2804 | data = memdup_user(useraddr, tuna.len); |
2805 | if (IS_ERR(data)) | |
2806 | return PTR_ERR(data); | |
f0db9b07 GV |
2807 | ret = ops->set_tunable(dev, &tuna, data); |
2808 | ||
f0db9b07 GV |
2809 | kfree(data); |
2810 | return ret; | |
2811 | } | |
2812 | ||
3499e87e AB |
2813 | static noinline_for_stack int |
2814 | ethtool_get_per_queue_coalesce(struct net_device *dev, | |
2815 | void __user *useraddr, | |
2816 | struct ethtool_per_queue_op *per_queue_opt) | |
421797b1 KL |
2817 | { |
2818 | u32 bit; | |
2819 | int ret; | |
2820 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2821 | ||
2822 | if (!dev->ethtool_ops->get_per_queue_coalesce) | |
2823 | return -EOPNOTSUPP; | |
2824 | ||
2825 | useraddr += sizeof(*per_queue_opt); | |
2826 | ||
3aa56885 YN |
2827 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, |
2828 | MAX_NUM_QUEUE); | |
421797b1 KL |
2829 | |
2830 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2831 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; | |
2832 | ||
2833 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); | |
2834 | if (ret != 0) | |
2835 | return ret; | |
2836 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
2837 | return -EFAULT; | |
2838 | useraddr += sizeof(coalesce); | |
2839 | } | |
2840 | ||
2841 | return 0; | |
2842 | } | |
2843 | ||
3499e87e AB |
2844 | static noinline_for_stack int |
2845 | ethtool_set_per_queue_coalesce(struct net_device *dev, | |
2846 | void __user *useraddr, | |
2847 | struct ethtool_per_queue_op *per_queue_opt) | |
f38d138a KL |
2848 | { |
2849 | u32 bit; | |
2850 | int i, ret = 0; | |
2851 | int n_queue; | |
2852 | struct ethtool_coalesce *backup = NULL, *tmp = NULL; | |
2853 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2854 | ||
2855 | if ((!dev->ethtool_ops->set_per_queue_coalesce) || | |
2856 | (!dev->ethtool_ops->get_per_queue_coalesce)) | |
2857 | return -EOPNOTSUPP; | |
2858 | ||
2859 | useraddr += sizeof(*per_queue_opt); | |
2860 | ||
3aa56885 | 2861 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); |
f38d138a KL |
2862 | n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); |
2863 | tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); | |
2864 | if (!backup) | |
2865 | return -ENOMEM; | |
2866 | ||
2867 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2868 | struct ethtool_coalesce coalesce; | |
2869 | ||
2870 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); | |
2871 | if (ret != 0) | |
2872 | goto roll_back; | |
2873 | ||
2874 | tmp++; | |
2875 | ||
2876 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { | |
2877 | ret = -EFAULT; | |
2878 | goto roll_back; | |
2879 | } | |
2880 | ||
95cddcb5 JK |
2881 | if (!ethtool_set_coalesce_supported(dev, &coalesce)) { |
2882 | ret = -EOPNOTSUPP; | |
2883 | goto roll_back; | |
2884 | } | |
2885 | ||
f38d138a KL |
2886 | ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); |
2887 | if (ret != 0) | |
2888 | goto roll_back; | |
2889 | ||
2890 | useraddr += sizeof(coalesce); | |
2891 | } | |
2892 | ||
2893 | roll_back: | |
2894 | if (ret != 0) { | |
2895 | tmp = backup; | |
2896 | for_each_set_bit(i, queue_mask, bit) { | |
2897 | dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); | |
2898 | tmp++; | |
2899 | } | |
2900 | } | |
2901 | kfree(backup); | |
2902 | ||
2903 | return ret; | |
2904 | } | |
2905 | ||
3499e87e | 2906 | static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, |
58f5bbe3 | 2907 | void __user *useraddr, u32 sub_cmd) |
ac2c7ad0 KL |
2908 | { |
2909 | struct ethtool_per_queue_op per_queue_opt; | |
2910 | ||
2911 | if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) | |
2912 | return -EFAULT; | |
2913 | ||
58f5bbe3 WW |
2914 | if (per_queue_opt.sub_command != sub_cmd) |
2915 | return -EINVAL; | |
2916 | ||
ac2c7ad0 | 2917 | switch (per_queue_opt.sub_command) { |
421797b1 KL |
2918 | case ETHTOOL_GCOALESCE: |
2919 | return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
f38d138a KL |
2920 | case ETHTOOL_SCOALESCE: |
2921 | return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
ac2c7ad0 KL |
2922 | default: |
2923 | return -EOPNOTSUPP; | |
9d253c02 | 2924 | } |
ac2c7ad0 KL |
2925 | } |
2926 | ||
968ad9da RL |
2927 | static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) |
2928 | { | |
2929 | switch (tuna->id) { | |
65feddd5 | 2930 | case ETHTOOL_PHY_DOWNSHIFT: |
3aeb0803 | 2931 | case ETHTOOL_PHY_FAST_LINK_DOWN: |
65feddd5 RL |
2932 | if (tuna->len != sizeof(u8) || |
2933 | tuna->type_id != ETHTOOL_TUNABLE_U8) | |
2934 | return -EINVAL; | |
2935 | break; | |
9f2f13f4 AA |
2936 | case ETHTOOL_PHY_EDPD: |
2937 | if (tuna->len != sizeof(u16) || | |
2938 | tuna->type_id != ETHTOOL_TUNABLE_U16) | |
2939 | return -EINVAL; | |
2940 | break; | |
968ad9da RL |
2941 | default: |
2942 | return -EINVAL; | |
2943 | } | |
2944 | ||
2945 | return 0; | |
2946 | } | |
2947 | ||
2948 | static int get_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2949 | { | |
968ad9da | 2950 | struct phy_device *phydev = dev->phydev; |
c6db31ff IR |
2951 | struct ethtool_tunable tuna; |
2952 | bool phy_drv_tunable; | |
968ad9da | 2953 | void *data; |
c6db31ff | 2954 | int ret; |
968ad9da | 2955 | |
c6db31ff IR |
2956 | phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; |
2957 | if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) | |
968ad9da | 2958 | return -EOPNOTSUPP; |
968ad9da RL |
2959 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
2960 | return -EFAULT; | |
2961 | ret = ethtool_phy_tunable_valid(&tuna); | |
2962 | if (ret) | |
2963 | return ret; | |
80ec82e3 | 2964 | data = kzalloc(tuna.len, GFP_USER); |
968ad9da RL |
2965 | if (!data) |
2966 | return -ENOMEM; | |
c6db31ff IR |
2967 | if (phy_drv_tunable) { |
2968 | mutex_lock(&phydev->lock); | |
2969 | ret = phydev->drv->get_tunable(phydev, &tuna, data); | |
2970 | mutex_unlock(&phydev->lock); | |
2971 | } else { | |
2972 | ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); | |
2973 | } | |
968ad9da RL |
2974 | if (ret) |
2975 | goto out; | |
2976 | useraddr += sizeof(tuna); | |
2977 | ret = -EFAULT; | |
2978 | if (copy_to_user(useraddr, data, tuna.len)) | |
2979 | goto out; | |
2980 | ret = 0; | |
2981 | ||
2982 | out: | |
2983 | kfree(data); | |
2984 | return ret; | |
2985 | } | |
2986 | ||
2987 | static int set_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2988 | { | |
968ad9da | 2989 | struct phy_device *phydev = dev->phydev; |
c6db31ff IR |
2990 | struct ethtool_tunable tuna; |
2991 | bool phy_drv_tunable; | |
968ad9da | 2992 | void *data; |
c6db31ff | 2993 | int ret; |
968ad9da | 2994 | |
c6db31ff IR |
2995 | phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; |
2996 | if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) | |
968ad9da RL |
2997 | return -EOPNOTSUPP; |
2998 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2999 | return -EFAULT; | |
3000 | ret = ethtool_phy_tunable_valid(&tuna); | |
3001 | if (ret) | |
3002 | return ret; | |
968ad9da | 3003 | useraddr += sizeof(tuna); |
30e7e3ec AV |
3004 | data = memdup_user(useraddr, tuna.len); |
3005 | if (IS_ERR(data)) | |
3006 | return PTR_ERR(data); | |
c6db31ff IR |
3007 | if (phy_drv_tunable) { |
3008 | mutex_lock(&phydev->lock); | |
3009 | ret = phydev->drv->set_tunable(phydev, &tuna, data); | |
3010 | mutex_unlock(&phydev->lock); | |
3011 | } else { | |
3012 | ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); | |
3013 | } | |
968ad9da | 3014 | |
968ad9da RL |
3015 | kfree(data); |
3016 | return ret; | |
3017 | } | |
3018 | ||
1a5f3da2 VSR |
3019 | static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) |
3020 | { | |
e83887f6 | 3021 | struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; |
a6d50512 | 3022 | int rc; |
1a5f3da2 VSR |
3023 | |
3024 | if (!dev->ethtool_ops->get_fecparam) | |
3025 | return -EOPNOTSUPP; | |
3026 | ||
a6d50512 EC |
3027 | rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); |
3028 | if (rc) | |
3029 | return rc; | |
1a5f3da2 | 3030 | |
240e1144 JK |
3031 | if (WARN_ON_ONCE(fecparam.reserved)) |
3032 | fecparam.reserved = 0; | |
3033 | ||
1a5f3da2 VSR |
3034 | if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) |
3035 | return -EFAULT; | |
3036 | return 0; | |
3037 | } | |
3038 | ||
3039 | static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) | |
3040 | { | |
3041 | struct ethtool_fecparam fecparam; | |
3042 | ||
3043 | if (!dev->ethtool_ops->set_fecparam) | |
3044 | return -EOPNOTSUPP; | |
3045 | ||
3046 | if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) | |
3047 | return -EFAULT; | |
3048 | ||
cf2cc0bf | 3049 | if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) |
42ce127d JK |
3050 | return -EINVAL; |
3051 | ||
d3b37fc8 | 3052 | fecparam.active_fec = 0; |
240e1144 JK |
3053 | fecparam.reserved = 0; |
3054 | ||
1a5f3da2 VSR |
3055 | return dev->ethtool_ops->set_fecparam(dev, &fecparam); |
3056 | } | |
3057 | ||
600fed5e | 3058 | /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
1da177e4 | 3059 | |
f49deaa6 | 3060 | static int |
095cfcfe JK |
3061 | __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, |
3062 | u32 ethcmd, struct ethtool_devlink_compat *devlink_state) | |
1da177e4 | 3063 | { |
095cfcfe JK |
3064 | struct net_device *dev; |
3065 | u32 sub_cmd; | |
1da177e4 | 3066 | int rc; |
b29d3145 | 3067 | netdev_features_t old_features; |
1da177e4 | 3068 | |
095cfcfe | 3069 | dev = __dev_get_by_name(net, ifr->ifr_name); |
f32a2137 | 3070 | if (!dev) |
1da177e4 LT |
3071 | return -ENODEV; |
3072 | ||
ac2c7ad0 KL |
3073 | if (ethcmd == ETHTOOL_PERQUEUE) { |
3074 | if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) | |
3075 | return -EFAULT; | |
3076 | } else { | |
3077 | sub_cmd = ethcmd; | |
3078 | } | |
75f3123c | 3079 | /* Allow some commands to be done by anyone */ |
ac2c7ad0 | 3080 | switch (sub_cmd) { |
0fdc100b | 3081 | case ETHTOOL_GSET: |
75f3123c | 3082 | case ETHTOOL_GDRVINFO: |
75f3123c | 3083 | case ETHTOOL_GMSGLVL: |
2da45db2 | 3084 | case ETHTOOL_GLINK: |
75f3123c SH |
3085 | case ETHTOOL_GCOALESCE: |
3086 | case ETHTOOL_GRINGPARAM: | |
3087 | case ETHTOOL_GPAUSEPARAM: | |
3088 | case ETHTOOL_GRXCSUM: | |
3089 | case ETHTOOL_GTXCSUM: | |
3090 | case ETHTOOL_GSG: | |
f80400a2 | 3091 | case ETHTOOL_GSSET_INFO: |
75f3123c | 3092 | case ETHTOOL_GSTRINGS: |
2da45db2 | 3093 | case ETHTOOL_GSTATS: |
f3a40945 | 3094 | case ETHTOOL_GPHYSTATS: |
75f3123c SH |
3095 | case ETHTOOL_GTSO: |
3096 | case ETHTOOL_GPERMADDR: | |
474ff260 | 3097 | case ETHTOOL_GUFO: |
75f3123c | 3098 | case ETHTOOL_GGSO: |
1cab819b | 3099 | case ETHTOOL_GGRO: |
339bf024 JG |
3100 | case ETHTOOL_GFLAGS: |
3101 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 3102 | case ETHTOOL_GRXFH: |
59089d8d SB |
3103 | case ETHTOOL_GRXRINGS: |
3104 | case ETHTOOL_GRXCLSRLCNT: | |
3105 | case ETHTOOL_GRXCLSRULE: | |
3106 | case ETHTOOL_GRXCLSRLALL: | |
2da45db2 | 3107 | case ETHTOOL_GRXFHINDIR: |
3de0b592 | 3108 | case ETHTOOL_GRSSH: |
5455c699 | 3109 | case ETHTOOL_GFEATURES: |
2da45db2 | 3110 | case ETHTOOL_GCHANNELS: |
c8f3a8c3 | 3111 | case ETHTOOL_GET_TS_INFO: |
2da45db2 | 3112 | case ETHTOOL_GEEE: |
f0db9b07 | 3113 | case ETHTOOL_GTUNABLE: |
968ad9da | 3114 | case ETHTOOL_PHY_GTUNABLE: |
8006f6bf | 3115 | case ETHTOOL_GLINKSETTINGS: |
1a5f3da2 | 3116 | case ETHTOOL_GFECPARAM: |
75f3123c SH |
3117 | break; |
3118 | default: | |
5e1fccc0 | 3119 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
75f3123c SH |
3120 | return -EPERM; |
3121 | } | |
3122 | ||
f32a2137 HK |
3123 | if (dev->dev.parent) |
3124 | pm_runtime_get_sync(dev->dev.parent); | |
3125 | ||
3126 | if (!netif_device_present(dev)) { | |
3127 | rc = -ENODEV; | |
3128 | goto out; | |
3129 | } | |
3130 | ||
97f8aefb | 3131 | if (dev->ethtool_ops->begin) { |
3132 | rc = dev->ethtool_ops->begin(dev); | |
f32a2137 HK |
3133 | if (rc < 0) |
3134 | goto out; | |
97f8aefb | 3135 | } |
d8a33ac4 SH |
3136 | old_features = dev->features; |
3137 | ||
1da177e4 LT |
3138 | switch (ethcmd) { |
3139 | case ETHTOOL_GSET: | |
3140 | rc = ethtool_get_settings(dev, useraddr); | |
3141 | break; | |
3142 | case ETHTOOL_SSET: | |
3143 | rc = ethtool_set_settings(dev, useraddr); | |
3144 | break; | |
3145 | case ETHTOOL_GDRVINFO: | |
095cfcfe | 3146 | rc = ethtool_get_drvinfo(dev, devlink_state); |
1da177e4 LT |
3147 | break; |
3148 | case ETHTOOL_GREGS: | |
3149 | rc = ethtool_get_regs(dev, useraddr); | |
3150 | break; | |
3151 | case ETHTOOL_GWOL: | |
3152 | rc = ethtool_get_wol(dev, useraddr); | |
3153 | break; | |
3154 | case ETHTOOL_SWOL: | |
3155 | rc = ethtool_set_wol(dev, useraddr); | |
3156 | break; | |
3157 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
3158 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
3159 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
3160 | break; |
3161 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
3162 | rc = ethtool_set_value_void(dev, useraddr, |
3163 | dev->ethtool_ops->set_msglevel); | |
0bda7af3 MK |
3164 | if (!rc) |
3165 | ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); | |
1da177e4 | 3166 | break; |
80f12ecc YM |
3167 | case ETHTOOL_GEEE: |
3168 | rc = ethtool_get_eee(dev, useraddr); | |
3169 | break; | |
3170 | case ETHTOOL_SEEE: | |
3171 | rc = ethtool_set_eee(dev, useraddr); | |
3172 | break; | |
1da177e4 LT |
3173 | case ETHTOOL_NWAY_RST: |
3174 | rc = ethtool_nway_reset(dev); | |
3175 | break; | |
3176 | case ETHTOOL_GLINK: | |
e596e6e4 | 3177 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
3178 | break; |
3179 | case ETHTOOL_GEEPROM: | |
3180 | rc = ethtool_get_eeprom(dev, useraddr); | |
3181 | break; | |
3182 | case ETHTOOL_SEEPROM: | |
3183 | rc = ethtool_set_eeprom(dev, useraddr); | |
3184 | break; | |
3185 | case ETHTOOL_GCOALESCE: | |
3186 | rc = ethtool_get_coalesce(dev, useraddr); | |
3187 | break; | |
3188 | case ETHTOOL_SCOALESCE: | |
3189 | rc = ethtool_set_coalesce(dev, useraddr); | |
3190 | break; | |
3191 | case ETHTOOL_GRINGPARAM: | |
3192 | rc = ethtool_get_ringparam(dev, useraddr); | |
3193 | break; | |
3194 | case ETHTOOL_SRINGPARAM: | |
3195 | rc = ethtool_set_ringparam(dev, useraddr); | |
3196 | break; | |
3197 | case ETHTOOL_GPAUSEPARAM: | |
3198 | rc = ethtool_get_pauseparam(dev, useraddr); | |
3199 | break; | |
3200 | case ETHTOOL_SPAUSEPARAM: | |
3201 | rc = ethtool_set_pauseparam(dev, useraddr); | |
3202 | break; | |
1da177e4 LT |
3203 | case ETHTOOL_TEST: |
3204 | rc = ethtool_self_test(dev, useraddr); | |
3205 | break; | |
3206 | case ETHTOOL_GSTRINGS: | |
3207 | rc = ethtool_get_strings(dev, useraddr); | |
3208 | break; | |
3209 | case ETHTOOL_PHYS_ID: | |
3210 | rc = ethtool_phys_id(dev, useraddr); | |
3211 | break; | |
3212 | case ETHTOOL_GSTATS: | |
3213 | rc = ethtool_get_stats(dev, useraddr); | |
3214 | break; | |
a6f9a705 JW |
3215 | case ETHTOOL_GPERMADDR: |
3216 | rc = ethtool_get_perm_addr(dev, useraddr); | |
3217 | break; | |
3ae7c0b2 | 3218 | case ETHTOOL_GFLAGS: |
13c99b24 | 3219 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
bc5787c6 | 3220 | __ethtool_get_flags); |
3ae7c0b2 JG |
3221 | break; |
3222 | case ETHTOOL_SFLAGS: | |
da8ac86c | 3223 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 3224 | break; |
339bf024 | 3225 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
3226 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
3227 | dev->ethtool_ops->get_priv_flags); | |
111dcba3 MK |
3228 | if (!rc) |
3229 | ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); | |
339bf024 JG |
3230 | break; |
3231 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
3232 | rc = ethtool_set_value(dev, useraddr, |
3233 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 3234 | break; |
0853ad66 | 3235 | case ETHTOOL_GRXFH: |
59089d8d SB |
3236 | case ETHTOOL_GRXRINGS: |
3237 | case ETHTOOL_GRXCLSRLCNT: | |
3238 | case ETHTOOL_GRXCLSRULE: | |
3239 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 3240 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
3241 | break; |
3242 | case ETHTOOL_SRXFH: | |
59089d8d SB |
3243 | case ETHTOOL_SRXCLSRLDEL: |
3244 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 3245 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 3246 | break; |
05c6a8d7 | 3247 | case ETHTOOL_FLASHDEV: |
095cfcfe | 3248 | rc = ethtool_flash_device(dev, devlink_state); |
05c6a8d7 | 3249 | break; |
d73d3a8c BH |
3250 | case ETHTOOL_RESET: |
3251 | rc = ethtool_reset(dev, useraddr); | |
3252 | break; | |
723b2f57 JG |
3253 | case ETHTOOL_GSSET_INFO: |
3254 | rc = ethtool_get_sset_info(dev, useraddr); | |
3255 | break; | |
a5b6ee29 BH |
3256 | case ETHTOOL_GRXFHINDIR: |
3257 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
3258 | break; | |
3259 | case ETHTOOL_SRXFHINDIR: | |
3260 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
3261 | break; | |
3de0b592 VD |
3262 | case ETHTOOL_GRSSH: |
3263 | rc = ethtool_get_rxfh(dev, useraddr); | |
3264 | break; | |
3265 | case ETHTOOL_SRSSH: | |
3266 | rc = ethtool_set_rxfh(dev, useraddr); | |
3267 | break; | |
5455c699 MM |
3268 | case ETHTOOL_GFEATURES: |
3269 | rc = ethtool_get_features(dev, useraddr); | |
3270 | break; | |
3271 | case ETHTOOL_SFEATURES: | |
3272 | rc = ethtool_set_features(dev, useraddr); | |
3273 | break; | |
0a417704 | 3274 | case ETHTOOL_GTXCSUM: |
e83d360d | 3275 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
3276 | case ETHTOOL_GSG: |
3277 | case ETHTOOL_GTSO: | |
0a417704 MM |
3278 | case ETHTOOL_GGSO: |
3279 | case ETHTOOL_GGRO: | |
3280 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
3281 | break; | |
3282 | case ETHTOOL_STXCSUM: | |
e83d360d | 3283 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
3284 | case ETHTOOL_SSG: |
3285 | case ETHTOOL_STSO: | |
0a417704 MM |
3286 | case ETHTOOL_SGSO: |
3287 | case ETHTOOL_SGRO: | |
3288 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
3289 | break; | |
8b5933c3 | 3290 | case ETHTOOL_GCHANNELS: |
3291 | rc = ethtool_get_channels(dev, useraddr); | |
3292 | break; | |
3293 | case ETHTOOL_SCHANNELS: | |
3294 | rc = ethtool_set_channels(dev, useraddr); | |
3295 | break; | |
29dd54b7 AC |
3296 | case ETHTOOL_SET_DUMP: |
3297 | rc = ethtool_set_dump(dev, useraddr); | |
3298 | break; | |
3299 | case ETHTOOL_GET_DUMP_FLAG: | |
3300 | rc = ethtool_get_dump_flag(dev, useraddr); | |
3301 | break; | |
3302 | case ETHTOOL_GET_DUMP_DATA: | |
3303 | rc = ethtool_get_dump_data(dev, useraddr); | |
3304 | break; | |
c8f3a8c3 RC |
3305 | case ETHTOOL_GET_TS_INFO: |
3306 | rc = ethtool_get_ts_info(dev, useraddr); | |
3307 | break; | |
41c3cb6d SH |
3308 | case ETHTOOL_GMODULEINFO: |
3309 | rc = ethtool_get_module_info(dev, useraddr); | |
3310 | break; | |
3311 | case ETHTOOL_GMODULEEEPROM: | |
3312 | rc = ethtool_get_module_eeprom(dev, useraddr); | |
3313 | break; | |
f0db9b07 GV |
3314 | case ETHTOOL_GTUNABLE: |
3315 | rc = ethtool_get_tunable(dev, useraddr); | |
3316 | break; | |
3317 | case ETHTOOL_STUNABLE: | |
3318 | rc = ethtool_set_tunable(dev, useraddr); | |
3319 | break; | |
f3a40945 AL |
3320 | case ETHTOOL_GPHYSTATS: |
3321 | rc = ethtool_get_phy_stats(dev, useraddr); | |
3322 | break; | |
ac2c7ad0 | 3323 | case ETHTOOL_PERQUEUE: |
58f5bbe3 | 3324 | rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); |
ac2c7ad0 | 3325 | break; |
3f1ac7a7 DD |
3326 | case ETHTOOL_GLINKSETTINGS: |
3327 | rc = ethtool_get_link_ksettings(dev, useraddr); | |
3328 | break; | |
3329 | case ETHTOOL_SLINKSETTINGS: | |
3330 | rc = ethtool_set_link_ksettings(dev, useraddr); | |
3331 | break; | |
968ad9da RL |
3332 | case ETHTOOL_PHY_GTUNABLE: |
3333 | rc = get_phy_tunable(dev, useraddr); | |
3334 | break; | |
3335 | case ETHTOOL_PHY_STUNABLE: | |
3336 | rc = set_phy_tunable(dev, useraddr); | |
3337 | break; | |
1a5f3da2 VSR |
3338 | case ETHTOOL_GFECPARAM: |
3339 | rc = ethtool_get_fecparam(dev, useraddr); | |
3340 | break; | |
3341 | case ETHTOOL_SFECPARAM: | |
3342 | rc = ethtool_set_fecparam(dev, useraddr); | |
3343 | break; | |
1da177e4 | 3344 | default: |
61a44b9c | 3345 | rc = -EOPNOTSUPP; |
1da177e4 | 3346 | } |
4ec93edb | 3347 | |
e71a4783 | 3348 | if (dev->ethtool_ops->complete) |
1da177e4 | 3349 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
3350 | |
3351 | if (old_features != dev->features) | |
3352 | netdev_features_change(dev); | |
f32a2137 HK |
3353 | out: |
3354 | if (dev->dev.parent) | |
3355 | pm_runtime_put(dev->dev.parent); | |
d8a33ac4 | 3356 | |
1da177e4 | 3357 | return rc; |
1da177e4 | 3358 | } |
eca4205f | 3359 | |
f49deaa6 JK |
3360 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) |
3361 | { | |
095cfcfe JK |
3362 | struct ethtool_devlink_compat *state; |
3363 | u32 ethcmd; | |
f49deaa6 JK |
3364 | int rc; |
3365 | ||
095cfcfe JK |
3366 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
3367 | return -EFAULT; | |
3368 | ||
3369 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
3370 | if (!state) | |
3371 | return -ENOMEM; | |
3372 | ||
3373 | switch (ethcmd) { | |
3374 | case ETHTOOL_FLASHDEV: | |
3375 | if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { | |
3376 | rc = -EFAULT; | |
3377 | goto exit_free; | |
3378 | } | |
3379 | state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; | |
3380 | break; | |
3381 | } | |
3382 | ||
f49deaa6 | 3383 | rtnl_lock(); |
095cfcfe | 3384 | rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); |
f49deaa6 | 3385 | rtnl_unlock(); |
095cfcfe JK |
3386 | if (rc) |
3387 | goto exit_free; | |
3388 | ||
3389 | switch (ethcmd) { | |
1af0a094 JK |
3390 | case ETHTOOL_FLASHDEV: |
3391 | if (state->devlink) | |
3392 | rc = devlink_compat_flash_update(state->devlink, | |
3393 | state->efl.data); | |
3394 | break; | |
095cfcfe | 3395 | case ETHTOOL_GDRVINFO: |
1af0a094 JK |
3396 | if (state->devlink) |
3397 | devlink_compat_running_version(state->devlink, | |
3398 | state->info.fw_version, | |
3399 | sizeof(state->info.fw_version)); | |
095cfcfe JK |
3400 | if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { |
3401 | rc = -EFAULT; | |
3402 | goto exit_free; | |
3403 | } | |
3404 | break; | |
3405 | } | |
f49deaa6 | 3406 | |
095cfcfe | 3407 | exit_free: |
1af0a094 JK |
3408 | if (state->devlink) |
3409 | devlink_put(state->devlink); | |
095cfcfe | 3410 | kfree(state); |
f49deaa6 JK |
3411 | return rc; |
3412 | } | |
3413 | ||
eca4205f PNA |
3414 | struct ethtool_rx_flow_key { |
3415 | struct flow_dissector_key_basic basic; | |
3416 | union { | |
3417 | struct flow_dissector_key_ipv4_addrs ipv4; | |
3418 | struct flow_dissector_key_ipv6_addrs ipv6; | |
3419 | }; | |
3420 | struct flow_dissector_key_ports tp; | |
3421 | struct flow_dissector_key_ip ip; | |
3422 | struct flow_dissector_key_vlan vlan; | |
3423 | struct flow_dissector_key_eth_addrs eth_addrs; | |
3424 | } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ | |
3425 | ||
3426 | struct ethtool_rx_flow_match { | |
3427 | struct flow_dissector dissector; | |
3428 | struct ethtool_rx_flow_key key; | |
3429 | struct ethtool_rx_flow_key mask; | |
3430 | }; | |
3431 | ||
3432 | struct ethtool_rx_flow_rule * | |
3433 | ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) | |
3434 | { | |
3435 | const struct ethtool_rx_flow_spec *fs = input->fs; | |
eca4205f PNA |
3436 | struct ethtool_rx_flow_match *match; |
3437 | struct ethtool_rx_flow_rule *flow; | |
3438 | struct flow_action_entry *act; | |
3439 | ||
3440 | flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + | |
3441 | sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); | |
3442 | if (!flow) | |
3443 | return ERR_PTR(-ENOMEM); | |
3444 | ||
3445 | /* ethtool_rx supports only one single action per rule. */ | |
3446 | flow->rule = flow_rule_alloc(1); | |
3447 | if (!flow->rule) { | |
3448 | kfree(flow); | |
3449 | return ERR_PTR(-ENOMEM); | |
3450 | } | |
3451 | ||
3452 | match = (struct ethtool_rx_flow_match *)flow->priv; | |
3453 | flow->rule->match.dissector = &match->dissector; | |
3454 | flow->rule->match.mask = &match->mask; | |
3455 | flow->rule->match.key = &match->key; | |
3456 | ||
3457 | match->mask.basic.n_proto = htons(0xffff); | |
3458 | ||
3459 | switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { | |
5b9469a2 MC |
3460 | case ETHER_FLOW: { |
3461 | const struct ethhdr *ether_spec, *ether_m_spec; | |
3462 | ||
3463 | ether_spec = &fs->h_u.ether_spec; | |
3464 | ether_m_spec = &fs->m_u.ether_spec; | |
3465 | ||
3466 | if (!is_zero_ether_addr(ether_m_spec->h_source)) { | |
3467 | ether_addr_copy(match->key.eth_addrs.src, | |
3468 | ether_spec->h_source); | |
3469 | ether_addr_copy(match->mask.eth_addrs.src, | |
3470 | ether_m_spec->h_source); | |
3471 | } | |
3472 | if (!is_zero_ether_addr(ether_m_spec->h_dest)) { | |
3473 | ether_addr_copy(match->key.eth_addrs.dst, | |
3474 | ether_spec->h_dest); | |
3475 | ether_addr_copy(match->mask.eth_addrs.dst, | |
3476 | ether_m_spec->h_dest); | |
3477 | } | |
3478 | if (ether_m_spec->h_proto) { | |
3479 | match->key.basic.n_proto = ether_spec->h_proto; | |
3480 | match->mask.basic.n_proto = ether_m_spec->h_proto; | |
3481 | } | |
3482 | } | |
3483 | break; | |
eca4205f PNA |
3484 | case TCP_V4_FLOW: |
3485 | case UDP_V4_FLOW: { | |
3486 | const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; | |
3487 | ||
3488 | match->key.basic.n_proto = htons(ETH_P_IP); | |
3489 | ||
3490 | v4_spec = &fs->h_u.tcp_ip4_spec; | |
3491 | v4_m_spec = &fs->m_u.tcp_ip4_spec; | |
3492 | ||
3493 | if (v4_m_spec->ip4src) { | |
3494 | match->key.ipv4.src = v4_spec->ip4src; | |
3495 | match->mask.ipv4.src = v4_m_spec->ip4src; | |
3496 | } | |
3497 | if (v4_m_spec->ip4dst) { | |
3498 | match->key.ipv4.dst = v4_spec->ip4dst; | |
3499 | match->mask.ipv4.dst = v4_m_spec->ip4dst; | |
3500 | } | |
3501 | if (v4_m_spec->ip4src || | |
3502 | v4_m_spec->ip4dst) { | |
3503 | match->dissector.used_keys |= | |
2b3082c6 | 3504 | BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); |
eca4205f PNA |
3505 | match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = |
3506 | offsetof(struct ethtool_rx_flow_key, ipv4); | |
3507 | } | |
3508 | if (v4_m_spec->psrc) { | |
3509 | match->key.tp.src = v4_spec->psrc; | |
3510 | match->mask.tp.src = v4_m_spec->psrc; | |
3511 | } | |
3512 | if (v4_m_spec->pdst) { | |
3513 | match->key.tp.dst = v4_spec->pdst; | |
3514 | match->mask.tp.dst = v4_m_spec->pdst; | |
3515 | } | |
3516 | if (v4_m_spec->psrc || | |
3517 | v4_m_spec->pdst) { | |
3518 | match->dissector.used_keys |= | |
2b3082c6 | 3519 | BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); |
eca4205f PNA |
3520 | match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = |
3521 | offsetof(struct ethtool_rx_flow_key, tp); | |
3522 | } | |
3523 | if (v4_m_spec->tos) { | |
3524 | match->key.ip.tos = v4_spec->tos; | |
3525 | match->mask.ip.tos = v4_m_spec->tos; | |
3526 | match->dissector.used_keys |= | |
3527 | BIT(FLOW_DISSECTOR_KEY_IP); | |
3528 | match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = | |
3529 | offsetof(struct ethtool_rx_flow_key, ip); | |
3530 | } | |
3531 | } | |
3532 | break; | |
3533 | case TCP_V6_FLOW: | |
3534 | case UDP_V6_FLOW: { | |
3535 | const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; | |
3536 | ||
3537 | match->key.basic.n_proto = htons(ETH_P_IPV6); | |
3538 | ||
3539 | v6_spec = &fs->h_u.tcp_ip6_spec; | |
3540 | v6_m_spec = &fs->m_u.tcp_ip6_spec; | |
8cdc3223 | 3541 | if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { |
eca4205f PNA |
3542 | memcpy(&match->key.ipv6.src, v6_spec->ip6src, |
3543 | sizeof(match->key.ipv6.src)); | |
3544 | memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, | |
3545 | sizeof(match->mask.ipv6.src)); | |
3546 | } | |
8cdc3223 | 3547 | if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { |
eca4205f PNA |
3548 | memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, |
3549 | sizeof(match->key.ipv6.dst)); | |
3550 | memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, | |
3551 | sizeof(match->mask.ipv6.dst)); | |
3552 | } | |
8cdc3223 KI |
3553 | if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || |
3554 | !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { | |
eca4205f | 3555 | match->dissector.used_keys |= |
2b3082c6 | 3556 | BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); |
eca4205f PNA |
3557 | match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = |
3558 | offsetof(struct ethtool_rx_flow_key, ipv6); | |
3559 | } | |
3560 | if (v6_m_spec->psrc) { | |
3561 | match->key.tp.src = v6_spec->psrc; | |
3562 | match->mask.tp.src = v6_m_spec->psrc; | |
3563 | } | |
3564 | if (v6_m_spec->pdst) { | |
3565 | match->key.tp.dst = v6_spec->pdst; | |
3566 | match->mask.tp.dst = v6_m_spec->pdst; | |
3567 | } | |
3568 | if (v6_m_spec->psrc || | |
3569 | v6_m_spec->pdst) { | |
3570 | match->dissector.used_keys |= | |
2b3082c6 | 3571 | BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); |
eca4205f PNA |
3572 | match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = |
3573 | offsetof(struct ethtool_rx_flow_key, tp); | |
3574 | } | |
3575 | if (v6_m_spec->tclass) { | |
3576 | match->key.ip.tos = v6_spec->tclass; | |
3577 | match->mask.ip.tos = v6_m_spec->tclass; | |
3578 | match->dissector.used_keys |= | |
2b3082c6 | 3579 | BIT_ULL(FLOW_DISSECTOR_KEY_IP); |
eca4205f PNA |
3580 | match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = |
3581 | offsetof(struct ethtool_rx_flow_key, ip); | |
3582 | } | |
3583 | } | |
3584 | break; | |
3585 | default: | |
3586 | ethtool_rx_flow_rule_destroy(flow); | |
3587 | return ERR_PTR(-EINVAL); | |
3588 | } | |
3589 | ||
3590 | switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { | |
3591 | case TCP_V4_FLOW: | |
3592 | case TCP_V6_FLOW: | |
3593 | match->key.basic.ip_proto = IPPROTO_TCP; | |
d0a84e1f | 3594 | match->mask.basic.ip_proto = 0xff; |
eca4205f PNA |
3595 | break; |
3596 | case UDP_V4_FLOW: | |
3597 | case UDP_V6_FLOW: | |
3598 | match->key.basic.ip_proto = IPPROTO_UDP; | |
d0a84e1f | 3599 | match->mask.basic.ip_proto = 0xff; |
eca4205f PNA |
3600 | break; |
3601 | } | |
eca4205f | 3602 | |
2b3082c6 | 3603 | match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); |
eca4205f PNA |
3604 | match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = |
3605 | offsetof(struct ethtool_rx_flow_key, basic); | |
3606 | ||
3607 | if (fs->flow_type & FLOW_EXT) { | |
3608 | const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; | |
3609 | const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; | |
3610 | ||
b73484b2 | 3611 | if (ext_m_spec->vlan_etype) { |
eca4205f PNA |
3612 | match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; |
3613 | match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; | |
b73484b2 | 3614 | } |
eca4205f | 3615 | |
b73484b2 | 3616 | if (ext_m_spec->vlan_tci) { |
eca4205f PNA |
3617 | match->key.vlan.vlan_id = |
3618 | ntohs(ext_h_spec->vlan_tci) & 0x0fff; | |
3619 | match->mask.vlan.vlan_id = | |
3620 | ntohs(ext_m_spec->vlan_tci) & 0x0fff; | |
3621 | ||
f0d2ca15 MC |
3622 | match->key.vlan.vlan_dei = |
3623 | !!(ext_h_spec->vlan_tci & htons(0x1000)); | |
3624 | match->mask.vlan.vlan_dei = | |
3625 | !!(ext_m_spec->vlan_tci & htons(0x1000)); | |
3626 | ||
eca4205f PNA |
3627 | match->key.vlan.vlan_priority = |
3628 | (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; | |
3629 | match->mask.vlan.vlan_priority = | |
3630 | (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; | |
b73484b2 | 3631 | } |
eca4205f | 3632 | |
b73484b2 MC |
3633 | if (ext_m_spec->vlan_etype || |
3634 | ext_m_spec->vlan_tci) { | |
eca4205f | 3635 | match->dissector.used_keys |= |
2b3082c6 | 3636 | BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); |
eca4205f PNA |
3637 | match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = |
3638 | offsetof(struct ethtool_rx_flow_key, vlan); | |
3639 | } | |
3640 | } | |
3641 | if (fs->flow_type & FLOW_MAC_EXT) { | |
3642 | const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; | |
3643 | const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; | |
3644 | ||
8b34ec65 NC |
3645 | memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, |
3646 | ETH_ALEN); | |
3647 | memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, | |
3648 | ETH_ALEN); | |
3649 | ||
3650 | match->dissector.used_keys |= | |
2b3082c6 | 3651 | BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); |
8b34ec65 NC |
3652 | match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = |
3653 | offsetof(struct ethtool_rx_flow_key, eth_addrs); | |
eca4205f PNA |
3654 | } |
3655 | ||
3656 | act = &flow->rule->action.entries[0]; | |
3657 | switch (fs->ring_cookie) { | |
3658 | case RX_CLS_FLOW_DISC: | |
3659 | act->id = FLOW_ACTION_DROP; | |
3660 | break; | |
3661 | case RX_CLS_FLOW_WAKE: | |
3662 | act->id = FLOW_ACTION_WAKE; | |
3663 | break; | |
3664 | default: | |
3665 | act->id = FLOW_ACTION_QUEUE; | |
3666 | if (fs->flow_type & FLOW_RSS) | |
3667 | act->queue.ctx = input->rss_ctx; | |
3668 | ||
3669 | act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); | |
3670 | act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); | |
3671 | break; | |
3672 | } | |
3673 | ||
3674 | return flow; | |
3675 | } | |
3676 | EXPORT_SYMBOL(ethtool_rx_flow_rule_create); | |
3677 | ||
3678 | void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) | |
3679 | { | |
3680 | kfree(flow->rule); | |
3681 | kfree(flow); | |
3682 | } | |
3683 | EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); |