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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> |
ddb6e99e | 29 | #include <net/devlink.h> |
8cdc3223 | 30 | #include <net/ipv6.h> |
a71506a4 | 31 | #include <net/xdp_sock_drv.h> |
eca4205f | 32 | #include <net/flow_offload.h> |
73286734 | 33 | #include <linux/ethtool_netlink.h> |
1c79031f | 34 | #include <generated/utsrelease.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 | { | |
61 | return netif_carrier_ok(dev) ? 1 : 0; | |
62 | } | |
97f8aefb | 63 | EXPORT_SYMBOL(ethtool_op_get_link); |
1da177e4 | 64 | |
02eacbd0 RC |
65 | int ethtool_op_get_ts_info(struct net_device *dev, struct ethtool_ts_info *info) |
66 | { | |
67 | info->so_timestamping = | |
68 | SOF_TIMESTAMPING_TX_SOFTWARE | | |
69 | SOF_TIMESTAMPING_RX_SOFTWARE | | |
70 | SOF_TIMESTAMPING_SOFTWARE; | |
71 | info->phc_index = -1; | |
72 | return 0; | |
73 | } | |
74 | EXPORT_SYMBOL(ethtool_op_get_ts_info); | |
75 | ||
1da177e4 LT |
76 | /* Handlers for each ethtool command */ |
77 | ||
5455c699 MM |
78 | static int ethtool_get_features(struct net_device *dev, void __user *useraddr) |
79 | { | |
80 | struct ethtool_gfeatures cmd = { | |
81 | .cmd = ETHTOOL_GFEATURES, | |
82 | .size = ETHTOOL_DEV_FEATURE_WORDS, | |
83 | }; | |
475414f6 | 84 | struct ethtool_get_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; |
5455c699 MM |
85 | u32 __user *sizeaddr; |
86 | u32 copy_size; | |
475414f6 MM |
87 | int i; |
88 | ||
89 | /* in case feature bits run out again */ | |
09da71b1 | 90 | BUILD_BUG_ON(ETHTOOL_DEV_FEATURE_WORDS * sizeof(u32) > sizeof(netdev_features_t)); |
475414f6 MM |
91 | |
92 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { | |
09da71b1 MM |
93 | features[i].available = (u32)(dev->hw_features >> (32 * i)); |
94 | features[i].requested = (u32)(dev->wanted_features >> (32 * i)); | |
95 | features[i].active = (u32)(dev->features >> (32 * i)); | |
96 | features[i].never_changed = | |
97 | (u32)(NETIF_F_NEVER_CHANGE >> (32 * i)); | |
475414f6 | 98 | } |
5455c699 MM |
99 | |
100 | sizeaddr = useraddr + offsetof(struct ethtool_gfeatures, size); | |
101 | if (get_user(copy_size, sizeaddr)) | |
102 | return -EFAULT; | |
103 | ||
104 | if (copy_size > ETHTOOL_DEV_FEATURE_WORDS) | |
105 | copy_size = ETHTOOL_DEV_FEATURE_WORDS; | |
106 | ||
107 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
108 | return -EFAULT; | |
109 | useraddr += sizeof(cmd); | |
ed717613 GS |
110 | if (copy_to_user(useraddr, features, |
111 | array_size(copy_size, sizeof(*features)))) | |
5455c699 MM |
112 | return -EFAULT; |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
117 | static int ethtool_set_features(struct net_device *dev, void __user *useraddr) | |
118 | { | |
119 | struct ethtool_sfeatures cmd; | |
120 | struct ethtool_set_features_block features[ETHTOOL_DEV_FEATURE_WORDS]; | |
475414f6 MM |
121 | netdev_features_t wanted = 0, valid = 0; |
122 | int i, ret = 0; | |
5455c699 MM |
123 | |
124 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
125 | return -EFAULT; | |
126 | useraddr += sizeof(cmd); | |
127 | ||
128 | if (cmd.size != ETHTOOL_DEV_FEATURE_WORDS) | |
129 | return -EINVAL; | |
130 | ||
131 | if (copy_from_user(features, useraddr, sizeof(features))) | |
132 | return -EFAULT; | |
133 | ||
475414f6 | 134 | for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; ++i) { |
09da71b1 MM |
135 | valid |= (netdev_features_t)features[i].valid << (32 * i); |
136 | wanted |= (netdev_features_t)features[i].requested << (32 * i); | |
475414f6 MM |
137 | } |
138 | ||
139 | if (valid & ~NETIF_F_ETHTOOL_BITS) | |
5455c699 MM |
140 | return -EINVAL; |
141 | ||
475414f6 MM |
142 | if (valid & ~dev->hw_features) { |
143 | valid &= dev->hw_features; | |
5455c699 MM |
144 | ret |= ETHTOOL_F_UNSUPPORTED; |
145 | } | |
146 | ||
475414f6 MM |
147 | dev->wanted_features &= ~valid; |
148 | dev->wanted_features |= wanted & valid; | |
6cb6a27c | 149 | __netdev_update_features(dev); |
5455c699 | 150 | |
475414f6 | 151 | if ((dev->wanted_features ^ dev->features) & valid) |
5455c699 MM |
152 | ret |= ETHTOOL_F_WISH; |
153 | ||
154 | return ret; | |
155 | } | |
156 | ||
340ae165 MM |
157 | static int __ethtool_get_sset_count(struct net_device *dev, int sset) |
158 | { | |
17809516 | 159 | const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; |
340ae165 MM |
160 | const struct ethtool_ops *ops = dev->ethtool_ops; |
161 | ||
5455c699 MM |
162 | if (sset == ETH_SS_FEATURES) |
163 | return ARRAY_SIZE(netdev_features_strings); | |
164 | ||
892311f6 EP |
165 | if (sset == ETH_SS_RSS_HASH_FUNCS) |
166 | return ARRAY_SIZE(rss_hash_func_strings); | |
167 | ||
a4244b0c HHZ |
168 | if (sset == ETH_SS_TUNABLES) |
169 | return ARRAY_SIZE(tunable_strings); | |
170 | ||
968ad9da RL |
171 | if (sset == ETH_SS_PHY_TUNABLES) |
172 | return ARRAY_SIZE(phy_tunable_strings); | |
173 | ||
99943382 | 174 | if (sset == ETH_SS_PHY_STATS && dev->phydev && |
17809516 FF |
175 | !ops->get_ethtool_phy_stats && |
176 | phy_ops && phy_ops->get_sset_count) | |
177 | return phy_ops->get_sset_count(dev->phydev); | |
f3a40945 | 178 | |
428c122f MK |
179 | if (sset == ETH_SS_LINK_MODES) |
180 | return __ETHTOOL_LINK_MODE_MASK_NBITS; | |
181 | ||
c03a14e8 | 182 | if (ops->get_sset_count && ops->get_strings) |
340ae165 MM |
183 | return ops->get_sset_count(dev, sset); |
184 | else | |
185 | return -EOPNOTSUPP; | |
186 | } | |
187 | ||
188 | static void __ethtool_get_strings(struct net_device *dev, | |
189 | u32 stringset, u8 *data) | |
190 | { | |
17809516 | 191 | const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; |
340ae165 MM |
192 | const struct ethtool_ops *ops = dev->ethtool_ops; |
193 | ||
5455c699 MM |
194 | if (stringset == ETH_SS_FEATURES) |
195 | memcpy(data, netdev_features_strings, | |
196 | sizeof(netdev_features_strings)); | |
892311f6 EP |
197 | else if (stringset == ETH_SS_RSS_HASH_FUNCS) |
198 | memcpy(data, rss_hash_func_strings, | |
199 | sizeof(rss_hash_func_strings)); | |
a4244b0c HHZ |
200 | else if (stringset == ETH_SS_TUNABLES) |
201 | memcpy(data, tunable_strings, sizeof(tunable_strings)); | |
968ad9da RL |
202 | else if (stringset == ETH_SS_PHY_TUNABLES) |
203 | memcpy(data, phy_tunable_strings, sizeof(phy_tunable_strings)); | |
99943382 | 204 | else if (stringset == ETH_SS_PHY_STATS && dev->phydev && |
17809516 FF |
205 | !ops->get_ethtool_phy_stats && phy_ops && |
206 | phy_ops->get_strings) | |
207 | phy_ops->get_strings(dev->phydev, data); | |
428c122f MK |
208 | else if (stringset == ETH_SS_LINK_MODES) |
209 | memcpy(data, link_mode_names, | |
210 | __ETHTOOL_LINK_MODE_MASK_NBITS * ETH_GSTRING_LEN); | |
99943382 | 211 | else |
5455c699 MM |
212 | /* ops->get_strings is valid because checked earlier */ |
213 | ops->get_strings(dev, stringset, data); | |
340ae165 MM |
214 | } |
215 | ||
c8f44aff | 216 | static netdev_features_t ethtool_get_feature_mask(u32 eth_cmd) |
0a417704 MM |
217 | { |
218 | /* feature masks of legacy discrete ethtool ops */ | |
219 | ||
220 | switch (eth_cmd) { | |
221 | case ETHTOOL_GTXCSUM: | |
222 | case ETHTOOL_STXCSUM: | |
9d648fb5 | 223 | return NETIF_F_CSUM_MASK | NETIF_F_FCOE_CRC | |
f70bb065 | 224 | NETIF_F_SCTP_CRC; |
e83d360d MM |
225 | case ETHTOOL_GRXCSUM: |
226 | case ETHTOOL_SRXCSUM: | |
227 | return NETIF_F_RXCSUM; | |
0a417704 MM |
228 | case ETHTOOL_GSG: |
229 | case ETHTOOL_SSG: | |
f70bb065 | 230 | return NETIF_F_SG | NETIF_F_FRAGLIST; |
0a417704 MM |
231 | case ETHTOOL_GTSO: |
232 | case ETHTOOL_STSO: | |
233 | return NETIF_F_ALL_TSO; | |
0a417704 MM |
234 | case ETHTOOL_GGSO: |
235 | case ETHTOOL_SGSO: | |
236 | return NETIF_F_GSO; | |
237 | case ETHTOOL_GGRO: | |
238 | case ETHTOOL_SGRO: | |
239 | return NETIF_F_GRO; | |
240 | default: | |
241 | BUG(); | |
242 | } | |
243 | } | |
244 | ||
0a417704 MM |
245 | static int ethtool_get_one_feature(struct net_device *dev, |
246 | char __user *useraddr, u32 ethcmd) | |
247 | { | |
c8f44aff | 248 | netdev_features_t mask = ethtool_get_feature_mask(ethcmd); |
0a417704 MM |
249 | struct ethtool_value edata = { |
250 | .cmd = ethcmd, | |
86794881 | 251 | .data = !!(dev->features & mask), |
0a417704 | 252 | }; |
0a417704 | 253 | |
0a417704 MM |
254 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
255 | return -EFAULT; | |
256 | return 0; | |
257 | } | |
258 | ||
0a417704 MM |
259 | static int ethtool_set_one_feature(struct net_device *dev, |
260 | void __user *useraddr, u32 ethcmd) | |
261 | { | |
262 | struct ethtool_value edata; | |
c8f44aff | 263 | netdev_features_t mask; |
0a417704 MM |
264 | |
265 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
266 | return -EFAULT; | |
267 | ||
86794881 MM |
268 | mask = ethtool_get_feature_mask(ethcmd); |
269 | mask &= dev->hw_features; | |
bc5787c6 MM |
270 | if (!mask) |
271 | return -EOPNOTSUPP; | |
86794881 | 272 | |
bc5787c6 MM |
273 | if (edata.data) |
274 | dev->wanted_features |= mask; | |
275 | else | |
276 | dev->wanted_features &= ~mask; | |
86794881 | 277 | |
bc5787c6 | 278 | __netdev_update_features(dev); |
86794881 | 279 | |
bc5787c6 MM |
280 | return 0; |
281 | } | |
282 | ||
02b3a552 MM |
283 | #define ETH_ALL_FLAGS (ETH_FLAG_LRO | ETH_FLAG_RXVLAN | ETH_FLAG_TXVLAN | \ |
284 | ETH_FLAG_NTUPLE | ETH_FLAG_RXHASH) | |
f646968f PM |
285 | #define ETH_ALL_FEATURES (NETIF_F_LRO | NETIF_F_HW_VLAN_CTAG_RX | \ |
286 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_NTUPLE | \ | |
287 | NETIF_F_RXHASH) | |
bc5787c6 MM |
288 | |
289 | static u32 __ethtool_get_flags(struct net_device *dev) | |
290 | { | |
02b3a552 MM |
291 | u32 flags = 0; |
292 | ||
8a73125c DF |
293 | if (dev->features & NETIF_F_LRO) |
294 | flags |= ETH_FLAG_LRO; | |
295 | if (dev->features & NETIF_F_HW_VLAN_CTAG_RX) | |
296 | flags |= ETH_FLAG_RXVLAN; | |
297 | if (dev->features & NETIF_F_HW_VLAN_CTAG_TX) | |
298 | flags |= ETH_FLAG_TXVLAN; | |
299 | if (dev->features & NETIF_F_NTUPLE) | |
300 | flags |= ETH_FLAG_NTUPLE; | |
301 | if (dev->features & NETIF_F_RXHASH) | |
302 | flags |= ETH_FLAG_RXHASH; | |
02b3a552 MM |
303 | |
304 | return flags; | |
0a417704 MM |
305 | } |
306 | ||
bc5787c6 | 307 | static int __ethtool_set_flags(struct net_device *dev, u32 data) |
da8ac86c | 308 | { |
c8f44aff | 309 | netdev_features_t features = 0, changed; |
da8ac86c | 310 | |
02b3a552 | 311 | if (data & ~ETH_ALL_FLAGS) |
da8ac86c MM |
312 | return -EINVAL; |
313 | ||
8a73125c DF |
314 | if (data & ETH_FLAG_LRO) |
315 | features |= NETIF_F_LRO; | |
316 | if (data & ETH_FLAG_RXVLAN) | |
317 | features |= NETIF_F_HW_VLAN_CTAG_RX; | |
318 | if (data & ETH_FLAG_TXVLAN) | |
319 | features |= NETIF_F_HW_VLAN_CTAG_TX; | |
320 | if (data & ETH_FLAG_NTUPLE) | |
321 | features |= NETIF_F_NTUPLE; | |
322 | if (data & ETH_FLAG_RXHASH) | |
323 | features |= NETIF_F_RXHASH; | |
02b3a552 | 324 | |
da8ac86c | 325 | /* allow changing only bits set in hw_features */ |
02b3a552 | 326 | changed = (features ^ dev->features) & ETH_ALL_FEATURES; |
da8ac86c MM |
327 | if (changed & ~dev->hw_features) |
328 | return (changed & dev->hw_features) ? -EINVAL : -EOPNOTSUPP; | |
329 | ||
330 | dev->wanted_features = | |
02b3a552 | 331 | (dev->wanted_features & ~changed) | (features & changed); |
da8ac86c | 332 | |
6cb6a27c | 333 | __netdev_update_features(dev); |
da8ac86c MM |
334 | |
335 | return 0; | |
336 | } | |
337 | ||
5a6cd6de AB |
338 | /* Given two link masks, AND them together and save the result in dst. */ |
339 | void ethtool_intersect_link_masks(struct ethtool_link_ksettings *dst, | |
340 | struct ethtool_link_ksettings *src) | |
341 | { | |
342 | unsigned int size = BITS_TO_LONGS(__ETHTOOL_LINK_MODE_MASK_NBITS); | |
343 | unsigned int idx = 0; | |
344 | ||
345 | for (; idx < size; idx++) { | |
346 | dst->link_modes.supported[idx] &= | |
347 | src->link_modes.supported[idx]; | |
348 | dst->link_modes.advertising[idx] &= | |
349 | src->link_modes.advertising[idx]; | |
350 | } | |
351 | } | |
352 | EXPORT_SYMBOL(ethtool_intersect_link_masks); | |
353 | ||
6d62b4d5 PR |
354 | void ethtool_convert_legacy_u32_to_link_mode(unsigned long *dst, |
355 | u32 legacy_u32) | |
3f1ac7a7 | 356 | { |
4973056c | 357 | linkmode_zero(dst); |
3f1ac7a7 DD |
358 | dst[0] = legacy_u32; |
359 | } | |
6d62b4d5 | 360 | EXPORT_SYMBOL(ethtool_convert_legacy_u32_to_link_mode); |
3f1ac7a7 DD |
361 | |
362 | /* return false if src had higher bits set. lower bits always updated. */ | |
6d62b4d5 PR |
363 | bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32, |
364 | const unsigned long *src) | |
3f1ac7a7 | 365 | { |
3f1ac7a7 | 366 | *legacy_u32 = src[0]; |
19d62f5e MB |
367 | return find_next_bit(src, __ETHTOOL_LINK_MODE_MASK_NBITS, 32) == |
368 | __ETHTOOL_LINK_MODE_MASK_NBITS; | |
3f1ac7a7 | 369 | } |
6d62b4d5 | 370 | EXPORT_SYMBOL(ethtool_convert_link_mode_to_legacy_u32); |
3f1ac7a7 | 371 | |
3f1ac7a7 DD |
372 | /* return false if ksettings link modes had higher bits |
373 | * set. legacy_settings always updated (best effort) | |
374 | */ | |
375 | static bool | |
376 | convert_link_ksettings_to_legacy_settings( | |
377 | struct ethtool_cmd *legacy_settings, | |
378 | const struct ethtool_link_ksettings *link_ksettings) | |
379 | { | |
380 | bool retval = true; | |
381 | ||
382 | memset(legacy_settings, 0, sizeof(*legacy_settings)); | |
383 | /* this also clears the deprecated fields in legacy structure: | |
384 | * __u8 transceiver; | |
385 | * __u32 maxtxpkt; | |
386 | * __u32 maxrxpkt; | |
387 | */ | |
388 | ||
6d62b4d5 | 389 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
390 | &legacy_settings->supported, |
391 | link_ksettings->link_modes.supported); | |
6d62b4d5 | 392 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
393 | &legacy_settings->advertising, |
394 | link_ksettings->link_modes.advertising); | |
6d62b4d5 | 395 | retval &= ethtool_convert_link_mode_to_legacy_u32( |
3f1ac7a7 DD |
396 | &legacy_settings->lp_advertising, |
397 | link_ksettings->link_modes.lp_advertising); | |
398 | ethtool_cmd_speed_set(legacy_settings, link_ksettings->base.speed); | |
399 | legacy_settings->duplex | |
400 | = link_ksettings->base.duplex; | |
401 | legacy_settings->port | |
402 | = link_ksettings->base.port; | |
403 | legacy_settings->phy_address | |
404 | = link_ksettings->base.phy_address; | |
405 | legacy_settings->autoneg | |
406 | = link_ksettings->base.autoneg; | |
407 | legacy_settings->mdio_support | |
408 | = link_ksettings->base.mdio_support; | |
409 | legacy_settings->eth_tp_mdix | |
410 | = link_ksettings->base.eth_tp_mdix; | |
411 | legacy_settings->eth_tp_mdix_ctrl | |
412 | = link_ksettings->base.eth_tp_mdix_ctrl; | |
19cab887 FF |
413 | legacy_settings->transceiver |
414 | = link_ksettings->base.transceiver; | |
3f1ac7a7 DD |
415 | return retval; |
416 | } | |
417 | ||
418 | /* number of 32-bit words to store the user's link mode bitmaps */ | |
419 | #define __ETHTOOL_LINK_MODE_MASK_NU32 \ | |
420 | DIV_ROUND_UP(__ETHTOOL_LINK_MODE_MASK_NBITS, 32) | |
421 | ||
422 | /* layout of the struct passed from/to userland */ | |
423 | struct ethtool_link_usettings { | |
424 | struct ethtool_link_settings base; | |
425 | struct { | |
426 | __u32 supported[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
427 | __u32 advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
428 | __u32 lp_advertising[__ETHTOOL_LINK_MODE_MASK_NU32]; | |
429 | } link_modes; | |
430 | }; | |
431 | ||
9b300495 | 432 | /* Internal kernel helper to query a device ethtool_link_settings. */ |
3f1ac7a7 DD |
433 | int __ethtool_get_link_ksettings(struct net_device *dev, |
434 | struct ethtool_link_ksettings *link_ksettings) | |
435 | { | |
3f1ac7a7 DD |
436 | ASSERT_RTNL(); |
437 | ||
9b300495 | 438 | if (!dev->ethtool_ops->get_link_ksettings) |
3237fc63 DD |
439 | return -EOPNOTSUPP; |
440 | ||
9b300495 | 441 | memset(link_ksettings, 0, sizeof(*link_ksettings)); |
a975d7d8 | 442 | return dev->ethtool_ops->get_link_ksettings(dev, link_ksettings); |
3f1ac7a7 DD |
443 | } |
444 | EXPORT_SYMBOL(__ethtool_get_link_ksettings); | |
445 | ||
446 | /* convert ethtool_link_usettings in user space to a kernel internal | |
447 | * ethtool_link_ksettings. return 0 on success, errno on error. | |
448 | */ | |
449 | static int load_link_ksettings_from_user(struct ethtool_link_ksettings *to, | |
450 | const void __user *from) | |
451 | { | |
452 | struct ethtool_link_usettings link_usettings; | |
453 | ||
454 | if (copy_from_user(&link_usettings, from, sizeof(link_usettings))) | |
455 | return -EFAULT; | |
456 | ||
457 | memcpy(&to->base, &link_usettings.base, sizeof(to->base)); | |
3aa56885 YN |
458 | bitmap_from_arr32(to->link_modes.supported, |
459 | link_usettings.link_modes.supported, | |
460 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
461 | bitmap_from_arr32(to->link_modes.advertising, | |
462 | link_usettings.link_modes.advertising, | |
463 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
464 | bitmap_from_arr32(to->link_modes.lp_advertising, | |
465 | link_usettings.link_modes.lp_advertising, | |
466 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
467 | |
468 | return 0; | |
469 | } | |
470 | ||
70ae1e12 CF |
471 | /* Check if the user is trying to change anything besides speed/duplex */ |
472 | bool ethtool_virtdev_validate_cmd(const struct ethtool_link_ksettings *cmd) | |
473 | { | |
474 | struct ethtool_link_settings base2 = {}; | |
475 | ||
476 | base2.speed = cmd->base.speed; | |
477 | base2.port = PORT_OTHER; | |
478 | base2.duplex = cmd->base.duplex; | |
479 | base2.cmd = cmd->base.cmd; | |
480 | base2.link_mode_masks_nwords = cmd->base.link_mode_masks_nwords; | |
481 | ||
482 | return !memcmp(&base2, &cmd->base, sizeof(base2)) && | |
483 | bitmap_empty(cmd->link_modes.supported, | |
484 | __ETHTOOL_LINK_MODE_MASK_NBITS) && | |
485 | bitmap_empty(cmd->link_modes.lp_advertising, | |
486 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
487 | } | |
488 | ||
3f1ac7a7 DD |
489 | /* convert a kernel internal ethtool_link_ksettings to |
490 | * ethtool_link_usettings in user space. return 0 on success, errno on | |
491 | * error. | |
492 | */ | |
493 | static int | |
494 | store_link_ksettings_for_user(void __user *to, | |
495 | const struct ethtool_link_ksettings *from) | |
496 | { | |
497 | struct ethtool_link_usettings link_usettings; | |
498 | ||
c1d9e34e | 499 | memcpy(&link_usettings, from, sizeof(link_usettings)); |
3aa56885 YN |
500 | bitmap_to_arr32(link_usettings.link_modes.supported, |
501 | from->link_modes.supported, | |
502 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
503 | bitmap_to_arr32(link_usettings.link_modes.advertising, | |
504 | from->link_modes.advertising, | |
505 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
506 | bitmap_to_arr32(link_usettings.link_modes.lp_advertising, | |
507 | from->link_modes.lp_advertising, | |
508 | __ETHTOOL_LINK_MODE_MASK_NBITS); | |
3f1ac7a7 DD |
509 | |
510 | if (copy_to_user(to, &link_usettings, sizeof(link_usettings))) | |
511 | return -EFAULT; | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
9b300495 | 516 | /* Query device for its ethtool_link_settings. */ |
3f1ac7a7 DD |
517 | static int ethtool_get_link_ksettings(struct net_device *dev, |
518 | void __user *useraddr) | |
519 | { | |
520 | int err = 0; | |
521 | struct ethtool_link_ksettings link_ksettings; | |
522 | ||
523 | ASSERT_RTNL(); | |
3f1ac7a7 DD |
524 | if (!dev->ethtool_ops->get_link_ksettings) |
525 | return -EOPNOTSUPP; | |
526 | ||
527 | /* handle bitmap nbits handshake */ | |
528 | if (copy_from_user(&link_ksettings.base, useraddr, | |
529 | sizeof(link_ksettings.base))) | |
530 | return -EFAULT; | |
531 | ||
532 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
533 | != link_ksettings.base.link_mode_masks_nwords) { | |
534 | /* wrong link mode nbits requested */ | |
535 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
793cf87d | 536 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; |
3f1ac7a7 DD |
537 | /* send back number of words required as negative val */ |
538 | compiletime_assert(__ETHTOOL_LINK_MODE_MASK_NU32 <= S8_MAX, | |
539 | "need too many bits for link modes!"); | |
540 | link_ksettings.base.link_mode_masks_nwords | |
541 | = -((s8)__ETHTOOL_LINK_MODE_MASK_NU32); | |
542 | ||
543 | /* copy the base fields back to user, not the link | |
544 | * mode bitmaps | |
545 | */ | |
546 | if (copy_to_user(useraddr, &link_ksettings.base, | |
547 | sizeof(link_ksettings.base))) | |
548 | return -EFAULT; | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | /* handshake successful: user/kernel agree on | |
554 | * link_mode_masks_nwords | |
555 | */ | |
556 | ||
557 | memset(&link_ksettings, 0, sizeof(link_ksettings)); | |
558 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
559 | if (err < 0) | |
560 | return err; | |
561 | ||
562 | /* make sure we tell the right values to user */ | |
563 | link_ksettings.base.cmd = ETHTOOL_GLINKSETTINGS; | |
564 | link_ksettings.base.link_mode_masks_nwords | |
565 | = __ETHTOOL_LINK_MODE_MASK_NU32; | |
bdbdac76 OR |
566 | link_ksettings.base.master_slave_cfg = MASTER_SLAVE_CFG_UNSUPPORTED; |
567 | link_ksettings.base.master_slave_state = MASTER_SLAVE_STATE_UNSUPPORTED; | |
0c3e10cb | 568 | link_ksettings.base.rate_matching = RATE_MATCH_NONE; |
3f1ac7a7 DD |
569 | |
570 | return store_link_ksettings_for_user(useraddr, &link_ksettings); | |
571 | } | |
572 | ||
9b300495 | 573 | /* Update device ethtool_link_settings. */ |
3f1ac7a7 DD |
574 | static int ethtool_set_link_ksettings(struct net_device *dev, |
575 | void __user *useraddr) | |
576 | { | |
9ad685db | 577 | struct ethtool_link_ksettings link_ksettings = {}; |
3f1ac7a7 | 578 | int err; |
3f1ac7a7 DD |
579 | |
580 | ASSERT_RTNL(); | |
581 | ||
582 | if (!dev->ethtool_ops->set_link_ksettings) | |
583 | return -EOPNOTSUPP; | |
584 | ||
585 | /* make sure nbits field has expected value */ | |
586 | if (copy_from_user(&link_ksettings.base, useraddr, | |
587 | sizeof(link_ksettings.base))) | |
588 | return -EFAULT; | |
589 | ||
590 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
591 | != link_ksettings.base.link_mode_masks_nwords) | |
592 | return -EINVAL; | |
593 | ||
594 | /* copy the whole structure, now that we know it has expected | |
595 | * format | |
596 | */ | |
597 | err = load_link_ksettings_from_user(&link_ksettings, useraddr); | |
598 | if (err) | |
599 | return err; | |
600 | ||
601 | /* re-check nwords field, just in case */ | |
602 | if (__ETHTOOL_LINK_MODE_MASK_NU32 | |
603 | != link_ksettings.base.link_mode_masks_nwords) | |
604 | return -EINVAL; | |
605 | ||
bdbdac76 OR |
606 | if (link_ksettings.base.master_slave_cfg || |
607 | link_ksettings.base.master_slave_state) | |
608 | return -EINVAL; | |
609 | ||
73286734 | 610 | err = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
1b1b1847 | 611 | if (err >= 0) { |
73286734 | 612 | ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
1b1b1847 MK |
613 | ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); |
614 | } | |
73286734 | 615 | return err; |
3f1ac7a7 DD |
616 | } |
617 | ||
70ae1e12 CF |
618 | int ethtool_virtdev_set_link_ksettings(struct net_device *dev, |
619 | const struct ethtool_link_ksettings *cmd, | |
620 | u32 *dev_speed, u8 *dev_duplex) | |
621 | { | |
622 | u32 speed; | |
623 | u8 duplex; | |
624 | ||
625 | speed = cmd->base.speed; | |
626 | duplex = cmd->base.duplex; | |
627 | /* don't allow custom speed and duplex */ | |
628 | if (!ethtool_validate_speed(speed) || | |
629 | !ethtool_validate_duplex(duplex) || | |
630 | !ethtool_virtdev_validate_cmd(cmd)) | |
631 | return -EINVAL; | |
632 | *dev_speed = speed; | |
633 | *dev_duplex = duplex; | |
634 | ||
635 | return 0; | |
636 | } | |
637 | EXPORT_SYMBOL(ethtool_virtdev_set_link_ksettings); | |
638 | ||
3f1ac7a7 DD |
639 | /* Query device for its ethtool_cmd settings. |
640 | * | |
9b300495 MK |
641 | * Backward compatibility note: for compatibility with legacy ethtool, this is |
642 | * now implemented via get_link_ksettings. When driver reports higher link mode | |
643 | * bits, a kernel warning is logged once (with name of 1st driver/device) to | |
644 | * recommend user to upgrade ethtool, but the command is successful (only the | |
645 | * lower link mode bits reported back to user). Deprecated fields from | |
646 | * ethtool_cmd (transceiver/maxrxpkt/maxtxpkt) are always set to zero. | |
3f1ac7a7 | 647 | */ |
4bc71cb9 JP |
648 | static int ethtool_get_settings(struct net_device *dev, void __user *useraddr) |
649 | { | |
9b300495 | 650 | struct ethtool_link_ksettings link_ksettings; |
4bc71cb9 | 651 | struct ethtool_cmd cmd; |
9b300495 | 652 | int err; |
4bc71cb9 | 653 | |
3f1ac7a7 | 654 | ASSERT_RTNL(); |
9b300495 MK |
655 | if (!dev->ethtool_ops->get_link_ksettings) |
656 | return -EOPNOTSUPP; | |
3f1ac7a7 | 657 | |
9b300495 MK |
658 | memset(&link_ksettings, 0, sizeof(link_ksettings)); |
659 | err = dev->ethtool_ops->get_link_ksettings(dev, &link_ksettings); | |
660 | if (err < 0) | |
661 | return err; | |
662 | convert_link_ksettings_to_legacy_settings(&cmd, &link_ksettings); | |
3237fc63 | 663 | |
9b300495 MK |
664 | /* send a sensible cmd tag back to user */ |
665 | cmd.cmd = ETHTOOL_GSET; | |
1da177e4 LT |
666 | |
667 | if (copy_to_user(useraddr, &cmd, sizeof(cmd))) | |
668 | return -EFAULT; | |
3f1ac7a7 | 669 | |
1da177e4 LT |
670 | return 0; |
671 | } | |
672 | ||
3f1ac7a7 DD |
673 | /* Update device link settings with given ethtool_cmd. |
674 | * | |
9b300495 MK |
675 | * Backward compatibility note: for compatibility with legacy ethtool, this is |
676 | * now always implemented via set_link_settings. When user's request updates | |
677 | * deprecated ethtool_cmd fields (transceiver/maxrxpkt/maxtxpkt), a kernel | |
678 | * warning is logged once (with name of 1st driver/device) to recommend user to | |
679 | * upgrade ethtool, and the request is rejected. | |
3f1ac7a7 | 680 | */ |
1da177e4 LT |
681 | static int ethtool_set_settings(struct net_device *dev, void __user *useraddr) |
682 | { | |
9b300495 | 683 | struct ethtool_link_ksettings link_ksettings; |
1da177e4 | 684 | struct ethtool_cmd cmd; |
73286734 | 685 | int ret; |
1da177e4 | 686 | |
3f1ac7a7 | 687 | ASSERT_RTNL(); |
1da177e4 LT |
688 | |
689 | if (copy_from_user(&cmd, useraddr, sizeof(cmd))) | |
690 | return -EFAULT; | |
9b300495 | 691 | if (!dev->ethtool_ops->set_link_ksettings) |
3f1ac7a7 DD |
692 | return -EOPNOTSUPP; |
693 | ||
9b300495 MK |
694 | if (!convert_legacy_settings_to_link_ksettings(&link_ksettings, &cmd)) |
695 | return -EINVAL; | |
696 | link_ksettings.base.link_mode_masks_nwords = | |
697 | __ETHTOOL_LINK_MODE_MASK_NU32; | |
73286734 | 698 | ret = dev->ethtool_ops->set_link_ksettings(dev, &link_ksettings); |
1b1b1847 | 699 | if (ret >= 0) { |
73286734 | 700 | ethtool_notify(dev, ETHTOOL_MSG_LINKINFO_NTF, NULL); |
1b1b1847 MK |
701 | ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL); |
702 | } | |
73286734 | 703 | return ret; |
1da177e4 LT |
704 | } |
705 | ||
095cfcfe JK |
706 | static int |
707 | ethtool_get_drvinfo(struct net_device *dev, struct ethtool_devlink_compat *rsp) | |
1da177e4 | 708 | { |
76fd8593 | 709 | const struct ethtool_ops *ops = dev->ethtool_ops; |
edaf5df2 | 710 | struct device *parent = dev->dev.parent; |
1da177e4 | 711 | |
095cfcfe | 712 | rsp->info.cmd = ETHTOOL_GDRVINFO; |
a71af890 | 713 | strscpy(rsp->info.version, UTS_RELEASE, sizeof(rsp->info.version)); |
c03a14e8 | 714 | if (ops->get_drvinfo) { |
095cfcfe | 715 | ops->get_drvinfo(dev, &rsp->info); |
edaf5df2 VM |
716 | if (!rsp->info.bus_info[0] && parent) |
717 | strscpy(rsp->info.bus_info, dev_name(parent), | |
718 | sizeof(rsp->info.bus_info)); | |
719 | if (!rsp->info.driver[0] && parent && parent->driver) | |
720 | strscpy(rsp->info.driver, parent->driver->name, | |
721 | sizeof(rsp->info.driver)); | |
722 | } else if (parent && parent->driver) { | |
723 | strscpy(rsp->info.bus_info, dev_name(parent), | |
095cfcfe | 724 | sizeof(rsp->info.bus_info)); |
edaf5df2 | 725 | strscpy(rsp->info.driver, parent->driver->name, |
095cfcfe | 726 | sizeof(rsp->info.driver)); |
bde3b0fd | 727 | } else if (dev->rtnl_link_ops) { |
a71af890 | 728 | strscpy(rsp->info.driver, dev->rtnl_link_ops->kind, |
bde3b0fd | 729 | sizeof(rsp->info.driver)); |
01414802 BH |
730 | } else { |
731 | return -EOPNOTSUPP; | |
732 | } | |
1da177e4 | 733 | |
723b2f57 JG |
734 | /* |
735 | * this method of obtaining string set info is deprecated; | |
d17792eb | 736 | * Use ETHTOOL_GSSET_INFO instead. |
723b2f57 | 737 | */ |
c03a14e8 | 738 | if (ops->get_sset_count) { |
ff03d49f JG |
739 | int rc; |
740 | ||
741 | rc = ops->get_sset_count(dev, ETH_SS_TEST); | |
742 | if (rc >= 0) | |
095cfcfe | 743 | rsp->info.testinfo_len = rc; |
ff03d49f JG |
744 | rc = ops->get_sset_count(dev, ETH_SS_STATS); |
745 | if (rc >= 0) | |
095cfcfe | 746 | rsp->info.n_stats = rc; |
339bf024 JG |
747 | rc = ops->get_sset_count(dev, ETH_SS_PRIV_FLAGS); |
748 | if (rc >= 0) | |
095cfcfe | 749 | rsp->info.n_priv_flags = rc; |
ff03d49f | 750 | } |
f9fc54d3 YL |
751 | if (ops->get_regs_len) { |
752 | int ret = ops->get_regs_len(dev); | |
753 | ||
754 | if (ret > 0) | |
095cfcfe | 755 | rsp->info.regdump_len = ret; |
f9fc54d3 YL |
756 | } |
757 | ||
c03a14e8 | 758 | if (ops->get_eeprom_len) |
095cfcfe | 759 | rsp->info.eedump_len = ops->get_eeprom_len(dev); |
ddb6e99e | 760 | |
095cfcfe | 761 | if (!rsp->info.fw_version[0]) |
1af0a094 JK |
762 | rsp->devlink = netdev_to_devlink_get(dev); |
763 | ||
1da177e4 LT |
764 | return 0; |
765 | } | |
766 | ||
f5c445ed | 767 | static noinline_for_stack int ethtool_get_sset_info(struct net_device *dev, |
97f8aefb | 768 | void __user *useraddr) |
723b2f57 JG |
769 | { |
770 | struct ethtool_sset_info info; | |
723b2f57 JG |
771 | u64 sset_mask; |
772 | int i, idx = 0, n_bits = 0, ret, rc; | |
773 | u32 *info_buf = NULL; | |
774 | ||
723b2f57 JG |
775 | if (copy_from_user(&info, useraddr, sizeof(info))) |
776 | return -EFAULT; | |
777 | ||
778 | /* store copy of mask, because we zero struct later on */ | |
779 | sset_mask = info.sset_mask; | |
780 | if (!sset_mask) | |
781 | return 0; | |
782 | ||
783 | /* calculate size of return buffer */ | |
d17792eb | 784 | n_bits = hweight64(sset_mask); |
723b2f57 JG |
785 | |
786 | memset(&info, 0, sizeof(info)); | |
787 | info.cmd = ETHTOOL_GSSET_INFO; | |
788 | ||
6396bb22 | 789 | info_buf = kcalloc(n_bits, sizeof(u32), GFP_USER); |
723b2f57 JG |
790 | if (!info_buf) |
791 | return -ENOMEM; | |
792 | ||
793 | /* | |
794 | * fill return buffer based on input bitmask and successful | |
795 | * get_sset_count return | |
796 | */ | |
797 | for (i = 0; i < 64; i++) { | |
798 | if (!(sset_mask & (1ULL << i))) | |
799 | continue; | |
800 | ||
340ae165 | 801 | rc = __ethtool_get_sset_count(dev, i); |
723b2f57 JG |
802 | if (rc >= 0) { |
803 | info.sset_mask |= (1ULL << i); | |
804 | info_buf[idx++] = rc; | |
805 | } | |
806 | } | |
807 | ||
808 | ret = -EFAULT; | |
809 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
810 | goto out; | |
811 | ||
812 | useraddr += offsetof(struct ethtool_sset_info, data); | |
ed717613 | 813 | if (copy_to_user(useraddr, info_buf, array_size(idx, sizeof(u32)))) |
723b2f57 JG |
814 | goto out; |
815 | ||
816 | ret = 0; | |
817 | ||
818 | out: | |
819 | kfree(info_buf); | |
820 | return ret; | |
821 | } | |
822 | ||
dd98d289 AB |
823 | static noinline_for_stack int |
824 | ethtool_rxnfc_copy_from_compat(struct ethtool_rxnfc *rxnfc, | |
825 | const struct compat_ethtool_rxnfc __user *useraddr, | |
826 | size_t size) | |
827 | { | |
828 | struct compat_ethtool_rxnfc crxnfc = {}; | |
829 | ||
830 | /* We expect there to be holes between fs.m_ext and | |
831 | * fs.ring_cookie and at the end of fs, but nowhere else. | |
832 | * On non-x86, no conversion should be needed. | |
833 | */ | |
834 | BUILD_BUG_ON(!IS_ENABLED(CONFIG_X86_64) && | |
835 | sizeof(struct compat_ethtool_rxnfc) != | |
836 | sizeof(struct ethtool_rxnfc)); | |
837 | BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.m_ext) + | |
838 | sizeof(useraddr->fs.m_ext) != | |
839 | offsetof(struct ethtool_rxnfc, fs.m_ext) + | |
840 | sizeof(rxnfc->fs.m_ext)); | |
841 | BUILD_BUG_ON(offsetof(struct compat_ethtool_rxnfc, fs.location) - | |
842 | offsetof(struct compat_ethtool_rxnfc, fs.ring_cookie) != | |
843 | offsetof(struct ethtool_rxnfc, fs.location) - | |
844 | offsetof(struct ethtool_rxnfc, fs.ring_cookie)); | |
845 | ||
846 | if (copy_from_user(&crxnfc, useraddr, min(size, sizeof(crxnfc)))) | |
847 | return -EFAULT; | |
848 | ||
849 | *rxnfc = (struct ethtool_rxnfc) { | |
850 | .cmd = crxnfc.cmd, | |
851 | .flow_type = crxnfc.flow_type, | |
852 | .data = crxnfc.data, | |
853 | .fs = { | |
854 | .flow_type = crxnfc.fs.flow_type, | |
855 | .h_u = crxnfc.fs.h_u, | |
856 | .h_ext = crxnfc.fs.h_ext, | |
857 | .m_u = crxnfc.fs.m_u, | |
858 | .m_ext = crxnfc.fs.m_ext, | |
859 | .ring_cookie = crxnfc.fs.ring_cookie, | |
860 | .location = crxnfc.fs.location, | |
861 | }, | |
862 | .rule_cnt = crxnfc.rule_cnt, | |
863 | }; | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | static int ethtool_rxnfc_copy_from_user(struct ethtool_rxnfc *rxnfc, | |
869 | const void __user *useraddr, | |
870 | size_t size) | |
871 | { | |
872 | if (compat_need_64bit_alignment_fixup()) | |
873 | return ethtool_rxnfc_copy_from_compat(rxnfc, useraddr, size); | |
874 | ||
875 | if (copy_from_user(rxnfc, useraddr, size)) | |
876 | return -EFAULT; | |
877 | ||
878 | return 0; | |
879 | } | |
880 | ||
881 | static int ethtool_rxnfc_copy_to_compat(void __user *useraddr, | |
882 | const struct ethtool_rxnfc *rxnfc, | |
883 | size_t size, const u32 *rule_buf) | |
884 | { | |
885 | struct compat_ethtool_rxnfc crxnfc; | |
886 | ||
887 | memset(&crxnfc, 0, sizeof(crxnfc)); | |
888 | crxnfc = (struct compat_ethtool_rxnfc) { | |
889 | .cmd = rxnfc->cmd, | |
890 | .flow_type = rxnfc->flow_type, | |
891 | .data = rxnfc->data, | |
892 | .fs = { | |
893 | .flow_type = rxnfc->fs.flow_type, | |
894 | .h_u = rxnfc->fs.h_u, | |
895 | .h_ext = rxnfc->fs.h_ext, | |
896 | .m_u = rxnfc->fs.m_u, | |
897 | .m_ext = rxnfc->fs.m_ext, | |
898 | .ring_cookie = rxnfc->fs.ring_cookie, | |
899 | .location = rxnfc->fs.location, | |
900 | }, | |
901 | .rule_cnt = rxnfc->rule_cnt, | |
902 | }; | |
903 | ||
904 | if (copy_to_user(useraddr, &crxnfc, min(size, sizeof(crxnfc)))) | |
905 | return -EFAULT; | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
801b27e8 JD |
910 | static int ethtool_rxnfc_copy_struct(u32 cmd, struct ethtool_rxnfc *info, |
911 | size_t *info_size, void __user *useraddr) | |
912 | { | |
913 | /* struct ethtool_rxnfc was originally defined for | |
914 | * ETHTOOL_{G,S}RXFH with only the cmd, flow_type and data | |
915 | * members. User-space might still be using that | |
916 | * definition. | |
917 | */ | |
918 | if (cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) | |
919 | *info_size = (offsetof(struct ethtool_rxnfc, data) + | |
920 | sizeof(info->data)); | |
921 | ||
922 | if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) | |
923 | return -EFAULT; | |
924 | ||
925 | if ((cmd == ETHTOOL_GRXFH || cmd == ETHTOOL_SRXFH) && info->flow_type & FLOW_RSS) { | |
926 | *info_size = sizeof(*info); | |
927 | if (ethtool_rxnfc_copy_from_user(info, useraddr, *info_size)) | |
928 | return -EFAULT; | |
929 | /* Since malicious users may modify the original data, | |
930 | * we need to check whether FLOW_RSS is still requested. | |
931 | */ | |
932 | if (!(info->flow_type & FLOW_RSS)) | |
933 | return -EINVAL; | |
934 | } | |
935 | ||
936 | if (info->cmd != cmd) | |
937 | return -EINVAL; | |
938 | ||
939 | return 0; | |
940 | } | |
941 | ||
dd98d289 AB |
942 | static int ethtool_rxnfc_copy_to_user(void __user *useraddr, |
943 | const struct ethtool_rxnfc *rxnfc, | |
944 | size_t size, const u32 *rule_buf) | |
945 | { | |
946 | int ret; | |
947 | ||
948 | if (compat_need_64bit_alignment_fixup()) { | |
949 | ret = ethtool_rxnfc_copy_to_compat(useraddr, rxnfc, size, | |
950 | rule_buf); | |
951 | useraddr += offsetof(struct compat_ethtool_rxnfc, rule_locs); | |
952 | } else { | |
9b29a161 | 953 | ret = copy_to_user(useraddr, rxnfc, size); |
dd98d289 AB |
954 | useraddr += offsetof(struct ethtool_rxnfc, rule_locs); |
955 | } | |
956 | ||
957 | if (ret) | |
958 | return -EFAULT; | |
959 | ||
960 | if (rule_buf) { | |
961 | if (copy_to_user(useraddr, rule_buf, | |
962 | rxnfc->rule_cnt * sizeof(u32))) | |
963 | return -EFAULT; | |
964 | } | |
965 | ||
966 | return 0; | |
967 | } | |
968 | ||
97f8aefb | 969 | static noinline_for_stack int ethtool_set_rxnfc(struct net_device *dev, |
bf988435 | 970 | u32 cmd, void __user *useraddr) |
0853ad66 | 971 | { |
bf988435 BH |
972 | struct ethtool_rxnfc info; |
973 | size_t info_size = sizeof(info); | |
55664f32 | 974 | int rc; |
0853ad66 | 975 | |
59089d8d | 976 | if (!dev->ethtool_ops->set_rxnfc) |
0853ad66 SB |
977 | return -EOPNOTSUPP; |
978 | ||
801b27e8 JD |
979 | rc = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); |
980 | if (rc) | |
981 | return rc; | |
0853ad66 | 982 | |
55664f32 BH |
983 | rc = dev->ethtool_ops->set_rxnfc(dev, &info); |
984 | if (rc) | |
985 | return rc; | |
986 | ||
987 | if (cmd == ETHTOOL_SRXCLSRLINS && | |
dd98d289 | 988 | ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, NULL)) |
55664f32 BH |
989 | return -EFAULT; |
990 | ||
991 | return 0; | |
0853ad66 SB |
992 | } |
993 | ||
97f8aefb | 994 | static noinline_for_stack int ethtool_get_rxnfc(struct net_device *dev, |
bf988435 | 995 | u32 cmd, void __user *useraddr) |
0853ad66 SB |
996 | { |
997 | struct ethtool_rxnfc info; | |
bf988435 | 998 | size_t info_size = sizeof(info); |
59089d8d SB |
999 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1000 | int ret; | |
1001 | void *rule_buf = NULL; | |
0853ad66 | 1002 | |
59089d8d | 1003 | if (!ops->get_rxnfc) |
0853ad66 SB |
1004 | return -EOPNOTSUPP; |
1005 | ||
801b27e8 JD |
1006 | ret = ethtool_rxnfc_copy_struct(cmd, &info, &info_size, useraddr); |
1007 | if (ret) | |
1008 | return ret; | |
2bb3207d | 1009 | |
59089d8d SB |
1010 | if (info.cmd == ETHTOOL_GRXCLSRLALL) { |
1011 | if (info.rule_cnt > 0) { | |
db048b69 | 1012 | if (info.rule_cnt <= KMALLOC_MAX_SIZE / sizeof(u32)) |
6396bb22 | 1013 | rule_buf = kcalloc(info.rule_cnt, sizeof(u32), |
db048b69 | 1014 | GFP_USER); |
59089d8d SB |
1015 | if (!rule_buf) |
1016 | return -ENOMEM; | |
1017 | } | |
1018 | } | |
0853ad66 | 1019 | |
59089d8d SB |
1020 | ret = ops->get_rxnfc(dev, &info, rule_buf); |
1021 | if (ret < 0) | |
1022 | goto err_out; | |
1023 | ||
dd98d289 | 1024 | ret = ethtool_rxnfc_copy_to_user(useraddr, &info, info_size, rule_buf); |
59089d8d | 1025 | err_out: |
c9caceca | 1026 | kfree(rule_buf); |
59089d8d SB |
1027 | |
1028 | return ret; | |
0853ad66 SB |
1029 | } |
1030 | ||
3de0b592 VD |
1031 | static int ethtool_copy_validate_indir(u32 *indir, void __user *useraddr, |
1032 | struct ethtool_rxnfc *rx_rings, | |
1033 | u32 size) | |
1034 | { | |
fb95cd8d | 1035 | int i; |
3de0b592 | 1036 | |
ed717613 | 1037 | if (copy_from_user(indir, useraddr, array_size(size, sizeof(indir[0])))) |
fb95cd8d | 1038 | return -EFAULT; |
3de0b592 VD |
1039 | |
1040 | /* Validate ring indices */ | |
fb95cd8d BH |
1041 | for (i = 0; i < size; i++) |
1042 | if (indir[i] >= rx_rings->data) | |
1043 | return -EINVAL; | |
1044 | ||
1045 | return 0; | |
3de0b592 VD |
1046 | } |
1047 | ||
ba905f5e | 1048 | u8 netdev_rss_key[NETDEV_RSS_KEY_LEN] __read_mostly; |
960fb622 ED |
1049 | |
1050 | void netdev_rss_key_fill(void *buffer, size_t len) | |
1051 | { | |
1052 | BUG_ON(len > sizeof(netdev_rss_key)); | |
1053 | net_get_random_once(netdev_rss_key, sizeof(netdev_rss_key)); | |
1054 | memcpy(buffer, netdev_rss_key, len); | |
1055 | } | |
1056 | EXPORT_SYMBOL(netdev_rss_key_fill); | |
1057 | ||
a5b6ee29 BH |
1058 | static noinline_for_stack int ethtool_get_rxfh_indir(struct net_device *dev, |
1059 | void __user *useraddr) | |
1060 | { | |
7850f63f BH |
1061 | u32 user_size, dev_size; |
1062 | u32 *indir; | |
a5b6ee29 BH |
1063 | int ret; |
1064 | ||
7850f63f | 1065 | if (!dev->ethtool_ops->get_rxfh_indir_size || |
fe62d001 | 1066 | !dev->ethtool_ops->get_rxfh) |
7850f63f BH |
1067 | return -EOPNOTSUPP; |
1068 | dev_size = dev->ethtool_ops->get_rxfh_indir_size(dev); | |
1069 | if (dev_size == 0) | |
a5b6ee29 BH |
1070 | return -EOPNOTSUPP; |
1071 | ||
7850f63f | 1072 | if (copy_from_user(&user_size, |
a5b6ee29 | 1073 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1074 | sizeof(user_size))) |
a5b6ee29 BH |
1075 | return -EFAULT; |
1076 | ||
7850f63f BH |
1077 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh_indir, size), |
1078 | &dev_size, sizeof(dev_size))) | |
1079 | return -EFAULT; | |
1080 | ||
1081 | /* If the user buffer size is 0, this is just a query for the | |
1082 | * device table size. Otherwise, if it's smaller than the | |
1083 | * device table size it's an error. | |
1084 | */ | |
1085 | if (user_size < dev_size) | |
1086 | return user_size == 0 ? 0 : -EINVAL; | |
1087 | ||
1088 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1089 | if (!indir) |
1090 | return -ENOMEM; | |
1091 | ||
892311f6 | 1092 | ret = dev->ethtool_ops->get_rxfh(dev, indir, NULL, NULL); |
a5b6ee29 BH |
1093 | if (ret) |
1094 | goto out; | |
1095 | ||
7850f63f BH |
1096 | if (copy_to_user(useraddr + |
1097 | offsetof(struct ethtool_rxfh_indir, ring_index[0]), | |
1098 | indir, dev_size * sizeof(indir[0]))) | |
a5b6ee29 BH |
1099 | ret = -EFAULT; |
1100 | ||
1101 | out: | |
1102 | kfree(indir); | |
1103 | return ret; | |
1104 | } | |
1105 | ||
1106 | static noinline_for_stack int ethtool_set_rxfh_indir(struct net_device *dev, | |
1107 | void __user *useraddr) | |
1108 | { | |
7850f63f BH |
1109 | struct ethtool_rxnfc rx_rings; |
1110 | u32 user_size, dev_size, i; | |
1111 | u32 *indir; | |
c03a14e8 | 1112 | const struct ethtool_ops *ops = dev->ethtool_ops; |
a5b6ee29 | 1113 | int ret; |
3de0b592 | 1114 | u32 ringidx_offset = offsetof(struct ethtool_rxfh_indir, ring_index[0]); |
a5b6ee29 | 1115 | |
fe62d001 | 1116 | if (!ops->get_rxfh_indir_size || !ops->set_rxfh || |
c03a14e8 | 1117 | !ops->get_rxnfc) |
7850f63f | 1118 | return -EOPNOTSUPP; |
c03a14e8 JP |
1119 | |
1120 | dev_size = ops->get_rxfh_indir_size(dev); | |
7850f63f | 1121 | if (dev_size == 0) |
a5b6ee29 BH |
1122 | return -EOPNOTSUPP; |
1123 | ||
7850f63f | 1124 | if (copy_from_user(&user_size, |
a5b6ee29 | 1125 | useraddr + offsetof(struct ethtool_rxfh_indir, size), |
7850f63f | 1126 | sizeof(user_size))) |
a5b6ee29 BH |
1127 | return -EFAULT; |
1128 | ||
278bc429 | 1129 | if (user_size != 0 && user_size != dev_size) |
7850f63f BH |
1130 | return -EINVAL; |
1131 | ||
1132 | indir = kcalloc(dev_size, sizeof(indir[0]), GFP_USER); | |
a5b6ee29 BH |
1133 | if (!indir) |
1134 | return -ENOMEM; | |
1135 | ||
7850f63f | 1136 | rx_rings.cmd = ETHTOOL_GRXRINGS; |
c03a14e8 | 1137 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); |
7850f63f BH |
1138 | if (ret) |
1139 | goto out; | |
278bc429 BH |
1140 | |
1141 | if (user_size == 0) { | |
1142 | for (i = 0; i < dev_size; i++) | |
1143 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1144 | } else { | |
3de0b592 VD |
1145 | ret = ethtool_copy_validate_indir(indir, |
1146 | useraddr + ringidx_offset, | |
1147 | &rx_rings, | |
1148 | dev_size); | |
1149 | if (ret) | |
1150 | goto out; | |
1151 | } | |
1152 | ||
892311f6 | 1153 | ret = ops->set_rxfh(dev, indir, NULL, ETH_RSS_HASH_NO_CHANGE); |
d4ab4286 KJ |
1154 | if (ret) |
1155 | goto out; | |
1156 | ||
1157 | /* indicate whether rxfh was set to default */ | |
1158 | if (user_size == 0) | |
1159 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1160 | else | |
1161 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
3de0b592 VD |
1162 | |
1163 | out: | |
1164 | kfree(indir); | |
1165 | return ret; | |
1166 | } | |
1167 | ||
1168 | static noinline_for_stack int ethtool_get_rxfh(struct net_device *dev, | |
1169 | void __user *useraddr) | |
1170 | { | |
1171 | int ret; | |
1172 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
f062a384 | 1173 | u32 user_indir_size, user_key_size; |
3de0b592 | 1174 | u32 dev_indir_size = 0, dev_key_size = 0; |
f062a384 | 1175 | struct ethtool_rxfh rxfh; |
3de0b592 | 1176 | u32 total_size; |
f062a384 | 1177 | u32 indir_bytes; |
3de0b592 | 1178 | u32 *indir = NULL; |
892311f6 | 1179 | u8 dev_hfunc = 0; |
3de0b592 VD |
1180 | u8 *hkey = NULL; |
1181 | u8 *rss_config; | |
1182 | ||
892311f6 | 1183 | if (!ops->get_rxfh) |
3de0b592 VD |
1184 | return -EOPNOTSUPP; |
1185 | ||
1186 | if (ops->get_rxfh_indir_size) | |
1187 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 VD |
1188 | if (ops->get_rxfh_key_size) |
1189 | dev_key_size = ops->get_rxfh_key_size(dev); | |
1190 | ||
f062a384 | 1191 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 | 1192 | return -EFAULT; |
f062a384 BH |
1193 | user_indir_size = rxfh.indir_size; |
1194 | user_key_size = rxfh.key_size; | |
3de0b592 | 1195 | |
f062a384 | 1196 | /* Check that reserved fields are 0 for now */ |
84a1d9c4 | 1197 | if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) |
f062a384 | 1198 | return -EINVAL; |
84a1d9c4 EC |
1199 | /* Most drivers don't handle rss_context, check it's 0 as well */ |
1200 | if (rxfh.rss_context && !ops->get_rxfh_context) | |
1201 | return -EOPNOTSUPP; | |
f062a384 BH |
1202 | |
1203 | rxfh.indir_size = dev_indir_size; | |
1204 | rxfh.key_size = dev_key_size; | |
1205 | if (copy_to_user(useraddr, &rxfh, sizeof(rxfh))) | |
3de0b592 VD |
1206 | return -EFAULT; |
1207 | ||
3de0b592 VD |
1208 | if ((user_indir_size && (user_indir_size != dev_indir_size)) || |
1209 | (user_key_size && (user_key_size != dev_key_size))) | |
1210 | return -EINVAL; | |
1211 | ||
1212 | indir_bytes = user_indir_size * sizeof(indir[0]); | |
1213 | total_size = indir_bytes + user_key_size; | |
1214 | rss_config = kzalloc(total_size, GFP_USER); | |
1215 | if (!rss_config) | |
1216 | return -ENOMEM; | |
1217 | ||
1218 | if (user_indir_size) | |
1219 | indir = (u32 *)rss_config; | |
1220 | ||
1221 | if (user_key_size) | |
1222 | hkey = rss_config + indir_bytes; | |
1223 | ||
84a1d9c4 EC |
1224 | if (rxfh.rss_context) |
1225 | ret = dev->ethtool_ops->get_rxfh_context(dev, indir, hkey, | |
1226 | &dev_hfunc, | |
1227 | rxfh.rss_context); | |
1228 | else | |
1229 | ret = dev->ethtool_ops->get_rxfh(dev, indir, hkey, &dev_hfunc); | |
892311f6 EP |
1230 | if (ret) |
1231 | goto out; | |
3de0b592 | 1232 | |
892311f6 EP |
1233 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, hfunc), |
1234 | &dev_hfunc, sizeof(rxfh.hfunc))) { | |
1235 | ret = -EFAULT; | |
1236 | } else if (copy_to_user(useraddr + | |
1237 | offsetof(struct ethtool_rxfh, rss_config[0]), | |
1238 | rss_config, total_size)) { | |
1239 | ret = -EFAULT; | |
1240 | } | |
1241 | out: | |
3de0b592 VD |
1242 | kfree(rss_config); |
1243 | ||
1244 | return ret; | |
1245 | } | |
1246 | ||
1247 | static noinline_for_stack int ethtool_set_rxfh(struct net_device *dev, | |
1248 | void __user *useraddr) | |
1249 | { | |
1250 | int ret; | |
1251 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1252 | struct ethtool_rxnfc rx_rings; | |
f062a384 BH |
1253 | struct ethtool_rxfh rxfh; |
1254 | u32 dev_indir_size = 0, dev_key_size = 0, i; | |
3de0b592 VD |
1255 | u32 *indir = NULL, indir_bytes = 0; |
1256 | u8 *hkey = NULL; | |
1257 | u8 *rss_config; | |
3de0b592 | 1258 | u32 rss_cfg_offset = offsetof(struct ethtool_rxfh, rss_config[0]); |
84a1d9c4 | 1259 | bool delete = false; |
3de0b592 | 1260 | |
892311f6 | 1261 | if (!ops->get_rxnfc || !ops->set_rxfh) |
3de0b592 VD |
1262 | return -EOPNOTSUPP; |
1263 | ||
1264 | if (ops->get_rxfh_indir_size) | |
1265 | dev_indir_size = ops->get_rxfh_indir_size(dev); | |
3de0b592 | 1266 | if (ops->get_rxfh_key_size) |
d340c862 | 1267 | dev_key_size = ops->get_rxfh_key_size(dev); |
3de0b592 | 1268 | |
f062a384 | 1269 | if (copy_from_user(&rxfh, useraddr, sizeof(rxfh))) |
3de0b592 VD |
1270 | return -EFAULT; |
1271 | ||
f062a384 | 1272 | /* Check that reserved fields are 0 for now */ |
84a1d9c4 | 1273 | if (rxfh.rsvd8[0] || rxfh.rsvd8[1] || rxfh.rsvd8[2] || rxfh.rsvd32) |
f062a384 | 1274 | return -EINVAL; |
84a1d9c4 EC |
1275 | /* Most drivers don't handle rss_context, check it's 0 as well */ |
1276 | if (rxfh.rss_context && !ops->set_rxfh_context) | |
1277 | return -EOPNOTSUPP; | |
f062a384 | 1278 | |
892311f6 EP |
1279 | /* If either indir, hash key or function is valid, proceed further. |
1280 | * Must request at least one change: indir size, hash key or function. | |
3de0b592 | 1281 | */ |
f062a384 BH |
1282 | if ((rxfh.indir_size && |
1283 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE && | |
1284 | rxfh.indir_size != dev_indir_size) || | |
1285 | (rxfh.key_size && (rxfh.key_size != dev_key_size)) || | |
1286 | (rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE && | |
892311f6 | 1287 | rxfh.key_size == 0 && rxfh.hfunc == ETH_RSS_HASH_NO_CHANGE)) |
3de0b592 VD |
1288 | return -EINVAL; |
1289 | ||
f062a384 | 1290 | if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) |
3de0b592 VD |
1291 | indir_bytes = dev_indir_size * sizeof(indir[0]); |
1292 | ||
f062a384 | 1293 | rss_config = kzalloc(indir_bytes + rxfh.key_size, GFP_USER); |
3de0b592 VD |
1294 | if (!rss_config) |
1295 | return -ENOMEM; | |
1296 | ||
1297 | rx_rings.cmd = ETHTOOL_GRXRINGS; | |
1298 | ret = ops->get_rxnfc(dev, &rx_rings, NULL); | |
1299 | if (ret) | |
1300 | goto out; | |
1301 | ||
84a1d9c4 EC |
1302 | /* rxfh.indir_size == 0 means reset the indir table to default (master |
1303 | * context) or delete the context (other RSS contexts). | |
f062a384 | 1304 | * rxfh.indir_size == ETH_RXFH_INDIR_NO_CHANGE means leave it unchanged. |
3de0b592 | 1305 | */ |
f062a384 BH |
1306 | if (rxfh.indir_size && |
1307 | rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) { | |
3de0b592 VD |
1308 | indir = (u32 *)rss_config; |
1309 | ret = ethtool_copy_validate_indir(indir, | |
1310 | useraddr + rss_cfg_offset, | |
1311 | &rx_rings, | |
f062a384 | 1312 | rxfh.indir_size); |
3de0b592 | 1313 | if (ret) |
7850f63f | 1314 | goto out; |
f062a384 | 1315 | } else if (rxfh.indir_size == 0) { |
84a1d9c4 EC |
1316 | if (rxfh.rss_context == 0) { |
1317 | indir = (u32 *)rss_config; | |
1318 | for (i = 0; i < dev_indir_size; i++) | |
1319 | indir[i] = ethtool_rxfh_indir_default(i, rx_rings.data); | |
1320 | } else { | |
1321 | delete = true; | |
1322 | } | |
3de0b592 | 1323 | } |
278bc429 | 1324 | |
f062a384 | 1325 | if (rxfh.key_size) { |
3de0b592 VD |
1326 | hkey = rss_config + indir_bytes; |
1327 | if (copy_from_user(hkey, | |
1328 | useraddr + rss_cfg_offset + indir_bytes, | |
f062a384 | 1329 | rxfh.key_size)) { |
3de0b592 VD |
1330 | ret = -EFAULT; |
1331 | goto out; | |
278bc429 | 1332 | } |
7850f63f BH |
1333 | } |
1334 | ||
84a1d9c4 EC |
1335 | if (rxfh.rss_context) |
1336 | ret = ops->set_rxfh_context(dev, indir, hkey, rxfh.hfunc, | |
1337 | &rxfh.rss_context, delete); | |
1338 | else | |
1339 | ret = ops->set_rxfh(dev, indir, hkey, rxfh.hfunc); | |
d4ab4286 KJ |
1340 | if (ret) |
1341 | goto out; | |
1342 | ||
84a1d9c4 EC |
1343 | if (copy_to_user(useraddr + offsetof(struct ethtool_rxfh, rss_context), |
1344 | &rxfh.rss_context, sizeof(rxfh.rss_context))) | |
1345 | ret = -EFAULT; | |
1346 | ||
1347 | if (!rxfh.rss_context) { | |
1348 | /* indicate whether rxfh was set to default */ | |
1349 | if (rxfh.indir_size == 0) | |
1350 | dev->priv_flags &= ~IFF_RXFH_CONFIGURED; | |
1351 | else if (rxfh.indir_size != ETH_RXFH_INDIR_NO_CHANGE) | |
1352 | dev->priv_flags |= IFF_RXFH_CONFIGURED; | |
1353 | } | |
a5b6ee29 BH |
1354 | |
1355 | out: | |
3de0b592 | 1356 | kfree(rss_config); |
a5b6ee29 BH |
1357 | return ret; |
1358 | } | |
1359 | ||
1da177e4 LT |
1360 | static int ethtool_get_regs(struct net_device *dev, char __user *useraddr) |
1361 | { | |
1362 | struct ethtool_regs regs; | |
76fd8593 | 1363 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 LT |
1364 | void *regbuf; |
1365 | int reglen, ret; | |
1366 | ||
1367 | if (!ops->get_regs || !ops->get_regs_len) | |
1368 | return -EOPNOTSUPP; | |
1369 | ||
1370 | if (copy_from_user(®s, useraddr, sizeof(regs))) | |
1371 | return -EFAULT; | |
1372 | ||
1373 | reglen = ops->get_regs_len(dev); | |
f9fc54d3 YL |
1374 | if (reglen <= 0) |
1375 | return reglen; | |
1376 | ||
1da177e4 LT |
1377 | if (regs.len > reglen) |
1378 | regs.len = reglen; | |
1379 | ||
ef76c77a DC |
1380 | regbuf = vzalloc(reglen); |
1381 | if (!regbuf) | |
1382 | return -ENOMEM; | |
1da177e4 | 1383 | |
0ee4e769 VD |
1384 | if (regs.len < reglen) |
1385 | reglen = regs.len; | |
1386 | ||
1da177e4 LT |
1387 | ops->get_regs(dev, ®s, regbuf); |
1388 | ||
1389 | ret = -EFAULT; | |
1390 | if (copy_to_user(useraddr, ®s, sizeof(regs))) | |
1391 | goto out; | |
1392 | useraddr += offsetof(struct ethtool_regs, data); | |
0ee4e769 | 1393 | if (copy_to_user(useraddr, regbuf, reglen)) |
1da177e4 LT |
1394 | goto out; |
1395 | ret = 0; | |
1396 | ||
1397 | out: | |
a77f5db3 | 1398 | vfree(regbuf); |
1da177e4 LT |
1399 | return ret; |
1400 | } | |
1401 | ||
d73d3a8c BH |
1402 | static int ethtool_reset(struct net_device *dev, char __user *useraddr) |
1403 | { | |
1404 | struct ethtool_value reset; | |
1405 | int ret; | |
1406 | ||
1407 | if (!dev->ethtool_ops->reset) | |
1408 | return -EOPNOTSUPP; | |
1409 | ||
1410 | if (copy_from_user(&reset, useraddr, sizeof(reset))) | |
1411 | return -EFAULT; | |
1412 | ||
1413 | ret = dev->ethtool_ops->reset(dev, &reset.data); | |
1414 | if (ret) | |
1415 | return ret; | |
1416 | ||
1417 | if (copy_to_user(useraddr, &reset, sizeof(reset))) | |
1418 | return -EFAULT; | |
1419 | return 0; | |
1420 | } | |
1421 | ||
1da177e4 LT |
1422 | static int ethtool_get_wol(struct net_device *dev, char __user *useraddr) |
1423 | { | |
5ff223e8 | 1424 | struct ethtool_wolinfo wol; |
1da177e4 LT |
1425 | |
1426 | if (!dev->ethtool_ops->get_wol) | |
1427 | return -EOPNOTSUPP; | |
1428 | ||
5ff223e8 | 1429 | memset(&wol, 0, sizeof(struct ethtool_wolinfo)); |
1430 | wol.cmd = ETHTOOL_GWOL; | |
1da177e4 LT |
1431 | dev->ethtool_ops->get_wol(dev, &wol); |
1432 | ||
1433 | if (copy_to_user(useraddr, &wol, sizeof(wol))) | |
1434 | return -EFAULT; | |
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | static int ethtool_set_wol(struct net_device *dev, char __user *useraddr) | |
1439 | { | |
55b24334 | 1440 | struct ethtool_wolinfo wol, cur_wol; |
61941143 | 1441 | int ret; |
1da177e4 | 1442 | |
55b24334 | 1443 | if (!dev->ethtool_ops->get_wol || !dev->ethtool_ops->set_wol) |
1da177e4 LT |
1444 | return -EOPNOTSUPP; |
1445 | ||
55b24334 JC |
1446 | memset(&cur_wol, 0, sizeof(struct ethtool_wolinfo)); |
1447 | cur_wol.cmd = ETHTOOL_GWOL; | |
1448 | dev->ethtool_ops->get_wol(dev, &cur_wol); | |
1449 | ||
1da177e4 LT |
1450 | if (copy_from_user(&wol, useraddr, sizeof(wol))) |
1451 | return -EFAULT; | |
1452 | ||
55b24334 JC |
1453 | if (wol.wolopts & ~cur_wol.supported) |
1454 | return -EINVAL; | |
1455 | ||
2bddad9e JC |
1456 | if (wol.wolopts == cur_wol.wolopts && |
1457 | !memcmp(wol.sopass, cur_wol.sopass, sizeof(wol.sopass))) | |
55b24334 JC |
1458 | return 0; |
1459 | ||
61941143 HK |
1460 | ret = dev->ethtool_ops->set_wol(dev, &wol); |
1461 | if (ret) | |
1462 | return ret; | |
1463 | ||
1464 | dev->wol_enabled = !!wol.wolopts; | |
67bffa79 | 1465 | ethtool_notify(dev, ETHTOOL_MSG_WOL_NTF, NULL); |
61941143 HK |
1466 | |
1467 | return 0; | |
1da177e4 LT |
1468 | } |
1469 | ||
80f12ecc YM |
1470 | static int ethtool_get_eee(struct net_device *dev, char __user *useraddr) |
1471 | { | |
1472 | struct ethtool_eee edata; | |
1473 | int rc; | |
1474 | ||
1475 | if (!dev->ethtool_ops->get_eee) | |
1476 | return -EOPNOTSUPP; | |
1477 | ||
1478 | memset(&edata, 0, sizeof(struct ethtool_eee)); | |
1479 | edata.cmd = ETHTOOL_GEEE; | |
1480 | rc = dev->ethtool_ops->get_eee(dev, &edata); | |
1481 | ||
1482 | if (rc) | |
1483 | return rc; | |
1484 | ||
1485 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
1486 | return -EFAULT; | |
1487 | ||
1488 | return 0; | |
1489 | } | |
1490 | ||
1491 | static int ethtool_set_eee(struct net_device *dev, char __user *useraddr) | |
1492 | { | |
1493 | struct ethtool_eee edata; | |
6c5bc8fe | 1494 | int ret; |
80f12ecc YM |
1495 | |
1496 | if (!dev->ethtool_ops->set_eee) | |
1497 | return -EOPNOTSUPP; | |
1498 | ||
1499 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
1500 | return -EFAULT; | |
1501 | ||
6c5bc8fe MK |
1502 | ret = dev->ethtool_ops->set_eee(dev, &edata); |
1503 | if (!ret) | |
1504 | ethtool_notify(dev, ETHTOOL_MSG_EEE_NTF, NULL); | |
1505 | return ret; | |
80f12ecc YM |
1506 | } |
1507 | ||
1da177e4 LT |
1508 | static int ethtool_nway_reset(struct net_device *dev) |
1509 | { | |
1510 | if (!dev->ethtool_ops->nway_reset) | |
1511 | return -EOPNOTSUPP; | |
1512 | ||
1513 | return dev->ethtool_ops->nway_reset(dev); | |
1514 | } | |
1515 | ||
e596e6e4 BH |
1516 | static int ethtool_get_link(struct net_device *dev, char __user *useraddr) |
1517 | { | |
1518 | struct ethtool_value edata = { .cmd = ETHTOOL_GLINK }; | |
3d2b847f | 1519 | int link = __ethtool_get_link(dev); |
e596e6e4 | 1520 | |
3d2b847f MK |
1521 | if (link < 0) |
1522 | return link; | |
e596e6e4 | 1523 | |
3d2b847f | 1524 | edata.data = link; |
e596e6e4 BH |
1525 | if (copy_to_user(useraddr, &edata, sizeof(edata))) |
1526 | return -EFAULT; | |
1527 | return 0; | |
1528 | } | |
1529 | ||
081d094e BH |
1530 | static int ethtool_get_any_eeprom(struct net_device *dev, void __user *useraddr, |
1531 | int (*getter)(struct net_device *, | |
1532 | struct ethtool_eeprom *, u8 *), | |
1533 | u32 total_len) | |
1da177e4 LT |
1534 | { |
1535 | struct ethtool_eeprom eeprom; | |
b131dd5d MSB |
1536 | void __user *userbuf = useraddr + sizeof(eeprom); |
1537 | u32 bytes_remaining; | |
1da177e4 | 1538 | u8 *data; |
b131dd5d | 1539 | int ret = 0; |
1da177e4 | 1540 | |
1da177e4 LT |
1541 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) |
1542 | return -EFAULT; | |
1543 | ||
1544 | /* Check for wrap and zero */ | |
1545 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1546 | return -EINVAL; | |
1547 | ||
1548 | /* Check for exceeding total eeprom len */ | |
081d094e | 1549 | if (eeprom.offset + eeprom.len > total_len) |
1da177e4 LT |
1550 | return -EINVAL; |
1551 | ||
80ec82e3 | 1552 | data = kzalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1553 | if (!data) |
1554 | return -ENOMEM; | |
1555 | ||
b131dd5d MSB |
1556 | bytes_remaining = eeprom.len; |
1557 | while (bytes_remaining > 0) { | |
1558 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1559 | ||
081d094e | 1560 | ret = getter(dev, &eeprom, data); |
b131dd5d MSB |
1561 | if (ret) |
1562 | break; | |
b9bbc4c1 HK |
1563 | if (!eeprom.len) { |
1564 | ret = -EIO; | |
1565 | break; | |
1566 | } | |
b131dd5d MSB |
1567 | if (copy_to_user(userbuf, data, eeprom.len)) { |
1568 | ret = -EFAULT; | |
1569 | break; | |
1570 | } | |
1571 | userbuf += eeprom.len; | |
1572 | eeprom.offset += eeprom.len; | |
1573 | bytes_remaining -= eeprom.len; | |
1574 | } | |
1da177e4 | 1575 | |
c5835df9 MSB |
1576 | eeprom.len = userbuf - (useraddr + sizeof(eeprom)); |
1577 | eeprom.offset -= eeprom.len; | |
1578 | if (copy_to_user(useraddr, &eeprom, sizeof(eeprom))) | |
1579 | ret = -EFAULT; | |
1580 | ||
1da177e4 LT |
1581 | kfree(data); |
1582 | return ret; | |
1583 | } | |
1584 | ||
081d094e BH |
1585 | static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr) |
1586 | { | |
1587 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
1588 | ||
e0fb6fb6 GR |
1589 | if (!ops->get_eeprom || !ops->get_eeprom_len || |
1590 | !ops->get_eeprom_len(dev)) | |
081d094e BH |
1591 | return -EOPNOTSUPP; |
1592 | ||
1593 | return ethtool_get_any_eeprom(dev, useraddr, ops->get_eeprom, | |
1594 | ops->get_eeprom_len(dev)); | |
1595 | } | |
1596 | ||
1da177e4 LT |
1597 | static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr) |
1598 | { | |
1599 | struct ethtool_eeprom eeprom; | |
76fd8593 | 1600 | const struct ethtool_ops *ops = dev->ethtool_ops; |
b131dd5d MSB |
1601 | void __user *userbuf = useraddr + sizeof(eeprom); |
1602 | u32 bytes_remaining; | |
1da177e4 | 1603 | u8 *data; |
b131dd5d | 1604 | int ret = 0; |
1da177e4 | 1605 | |
e0fb6fb6 GR |
1606 | if (!ops->set_eeprom || !ops->get_eeprom_len || |
1607 | !ops->get_eeprom_len(dev)) | |
1da177e4 LT |
1608 | return -EOPNOTSUPP; |
1609 | ||
1610 | if (copy_from_user(&eeprom, useraddr, sizeof(eeprom))) | |
1611 | return -EFAULT; | |
1612 | ||
1613 | /* Check for wrap and zero */ | |
1614 | if (eeprom.offset + eeprom.len <= eeprom.offset) | |
1615 | return -EINVAL; | |
1616 | ||
1617 | /* Check for exceeding total eeprom len */ | |
1618 | if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev)) | |
1619 | return -EINVAL; | |
1620 | ||
80ec82e3 | 1621 | data = kzalloc(PAGE_SIZE, GFP_USER); |
1da177e4 LT |
1622 | if (!data) |
1623 | return -ENOMEM; | |
1624 | ||
b131dd5d MSB |
1625 | bytes_remaining = eeprom.len; |
1626 | while (bytes_remaining > 0) { | |
1627 | eeprom.len = min(bytes_remaining, (u32)PAGE_SIZE); | |
1628 | ||
1629 | if (copy_from_user(data, userbuf, eeprom.len)) { | |
1630 | ret = -EFAULT; | |
1631 | break; | |
1632 | } | |
1633 | ret = ops->set_eeprom(dev, &eeprom, data); | |
1634 | if (ret) | |
1635 | break; | |
1636 | userbuf += eeprom.len; | |
1637 | eeprom.offset += eeprom.len; | |
1638 | bytes_remaining -= eeprom.len; | |
1639 | } | |
1da177e4 | 1640 | |
1da177e4 LT |
1641 | kfree(data); |
1642 | return ret; | |
1643 | } | |
1644 | ||
97f8aefb | 1645 | static noinline_for_stack int ethtool_get_coalesce(struct net_device *dev, |
1646 | void __user *useraddr) | |
1da177e4 | 1647 | { |
8e557421 | 1648 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; |
f3ccfda1 | 1649 | struct kernel_ethtool_coalesce kernel_coalesce = {}; |
31610711 | 1650 | int ret; |
1da177e4 LT |
1651 | |
1652 | if (!dev->ethtool_ops->get_coalesce) | |
1653 | return -EOPNOTSUPP; | |
1654 | ||
f3ccfda1 YM |
1655 | ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, |
1656 | NULL); | |
31610711 HK |
1657 | if (ret) |
1658 | return ret; | |
1da177e4 LT |
1659 | |
1660 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
1661 | return -EFAULT; | |
1662 | return 0; | |
1663 | } | |
1664 | ||
95cddcb5 JK |
1665 | static bool |
1666 | ethtool_set_coalesce_supported(struct net_device *dev, | |
1667 | struct ethtool_coalesce *coalesce) | |
1668 | { | |
1669 | u32 supported_params = dev->ethtool_ops->supported_coalesce_params; | |
1670 | u32 nonzero_params = 0; | |
1671 | ||
95cddcb5 JK |
1672 | if (coalesce->rx_coalesce_usecs) |
1673 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS; | |
1674 | if (coalesce->rx_max_coalesced_frames) | |
1675 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES; | |
1676 | if (coalesce->rx_coalesce_usecs_irq) | |
1677 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS_IRQ; | |
1678 | if (coalesce->rx_max_coalesced_frames_irq) | |
1679 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_IRQ; | |
1680 | if (coalesce->tx_coalesce_usecs) | |
1681 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS; | |
1682 | if (coalesce->tx_max_coalesced_frames) | |
1683 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES; | |
1684 | if (coalesce->tx_coalesce_usecs_irq) | |
1685 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS_IRQ; | |
1686 | if (coalesce->tx_max_coalesced_frames_irq) | |
1687 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_IRQ; | |
1688 | if (coalesce->stats_block_coalesce_usecs) | |
1689 | nonzero_params |= ETHTOOL_COALESCE_STATS_BLOCK_USECS; | |
1690 | if (coalesce->use_adaptive_rx_coalesce) | |
1691 | nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_RX; | |
1692 | if (coalesce->use_adaptive_tx_coalesce) | |
1693 | nonzero_params |= ETHTOOL_COALESCE_USE_ADAPTIVE_TX; | |
1694 | if (coalesce->pkt_rate_low) | |
1695 | nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_LOW; | |
1696 | if (coalesce->rx_coalesce_usecs_low) | |
1697 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS_LOW; | |
1698 | if (coalesce->rx_max_coalesced_frames_low) | |
1699 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_LOW; | |
1700 | if (coalesce->tx_coalesce_usecs_low) | |
1701 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS_LOW; | |
1702 | if (coalesce->tx_max_coalesced_frames_low) | |
1703 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_LOW; | |
1704 | if (coalesce->pkt_rate_high) | |
1705 | nonzero_params |= ETHTOOL_COALESCE_PKT_RATE_HIGH; | |
1706 | if (coalesce->rx_coalesce_usecs_high) | |
1707 | nonzero_params |= ETHTOOL_COALESCE_RX_USECS_HIGH; | |
1708 | if (coalesce->rx_max_coalesced_frames_high) | |
1709 | nonzero_params |= ETHTOOL_COALESCE_RX_MAX_FRAMES_HIGH; | |
1710 | if (coalesce->tx_coalesce_usecs_high) | |
1711 | nonzero_params |= ETHTOOL_COALESCE_TX_USECS_HIGH; | |
1712 | if (coalesce->tx_max_coalesced_frames_high) | |
1713 | nonzero_params |= ETHTOOL_COALESCE_TX_MAX_FRAMES_HIGH; | |
1714 | if (coalesce->rate_sample_interval) | |
1715 | nonzero_params |= ETHTOOL_COALESCE_RATE_SAMPLE_INTERVAL; | |
1716 | ||
1717 | return (supported_params & nonzero_params) == nonzero_params; | |
1718 | } | |
1719 | ||
97f8aefb | 1720 | static noinline_for_stack int ethtool_set_coalesce(struct net_device *dev, |
1721 | void __user *useraddr) | |
1da177e4 | 1722 | { |
f3ccfda1 | 1723 | struct kernel_ethtool_coalesce kernel_coalesce = {}; |
1da177e4 | 1724 | struct ethtool_coalesce coalesce; |
0cf3eac8 | 1725 | int ret; |
1da177e4 | 1726 | |
0276af21 | 1727 | if (!dev->ethtool_ops->set_coalesce || !dev->ethtool_ops->get_coalesce) |
1da177e4 LT |
1728 | return -EOPNOTSUPP; |
1729 | ||
f3ccfda1 YM |
1730 | ret = dev->ethtool_ops->get_coalesce(dev, &coalesce, &kernel_coalesce, |
1731 | NULL); | |
1732 | if (ret) | |
1733 | return ret; | |
1734 | ||
1da177e4 LT |
1735 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) |
1736 | return -EFAULT; | |
1737 | ||
95cddcb5 JK |
1738 | if (!ethtool_set_coalesce_supported(dev, &coalesce)) |
1739 | return -EOPNOTSUPP; | |
1740 | ||
f3ccfda1 YM |
1741 | ret = dev->ethtool_ops->set_coalesce(dev, &coalesce, &kernel_coalesce, |
1742 | NULL); | |
0cf3eac8 MK |
1743 | if (!ret) |
1744 | ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); | |
1745 | return ret; | |
1da177e4 LT |
1746 | } |
1747 | ||
1748 | static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr) | |
1749 | { | |
8e557421 | 1750 | struct ethtool_ringparam ringparam = { .cmd = ETHTOOL_GRINGPARAM }; |
74624944 | 1751 | struct kernel_ethtool_ringparam kernel_ringparam = {}; |
1da177e4 LT |
1752 | |
1753 | if (!dev->ethtool_ops->get_ringparam) | |
1754 | return -EOPNOTSUPP; | |
1755 | ||
74624944 HC |
1756 | dev->ethtool_ops->get_ringparam(dev, &ringparam, |
1757 | &kernel_ringparam, NULL); | |
1da177e4 LT |
1758 | |
1759 | if (copy_to_user(useraddr, &ringparam, sizeof(ringparam))) | |
1760 | return -EFAULT; | |
1761 | return 0; | |
1762 | } | |
1763 | ||
1764 | static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr) | |
1765 | { | |
37e2d99b | 1766 | struct ethtool_ringparam ringparam, max = { .cmd = ETHTOOL_GRINGPARAM }; |
74624944 | 1767 | struct kernel_ethtool_ringparam kernel_ringparam; |
bc9d1c99 | 1768 | int ret; |
1da177e4 | 1769 | |
37e2d99b | 1770 | if (!dev->ethtool_ops->set_ringparam || !dev->ethtool_ops->get_ringparam) |
1da177e4 LT |
1771 | return -EOPNOTSUPP; |
1772 | ||
1773 | if (copy_from_user(&ringparam, useraddr, sizeof(ringparam))) | |
1774 | return -EFAULT; | |
1775 | ||
74624944 | 1776 | dev->ethtool_ops->get_ringparam(dev, &max, &kernel_ringparam, NULL); |
37e2d99b EE |
1777 | |
1778 | /* ensure new ring parameters are within the maximums */ | |
1779 | if (ringparam.rx_pending > max.rx_max_pending || | |
1780 | ringparam.rx_mini_pending > max.rx_mini_max_pending || | |
1781 | ringparam.rx_jumbo_pending > max.rx_jumbo_max_pending || | |
1782 | ringparam.tx_pending > max.tx_max_pending) | |
1783 | return -EINVAL; | |
1784 | ||
74624944 HC |
1785 | ret = dev->ethtool_ops->set_ringparam(dev, &ringparam, |
1786 | &kernel_ringparam, NULL); | |
bc9d1c99 MK |
1787 | if (!ret) |
1788 | ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL); | |
1789 | return ret; | |
1da177e4 LT |
1790 | } |
1791 | ||
8b5933c3 | 1792 | static noinline_for_stack int ethtool_get_channels(struct net_device *dev, |
1793 | void __user *useraddr) | |
1794 | { | |
1795 | struct ethtool_channels channels = { .cmd = ETHTOOL_GCHANNELS }; | |
1796 | ||
1797 | if (!dev->ethtool_ops->get_channels) | |
1798 | return -EOPNOTSUPP; | |
1799 | ||
1800 | dev->ethtool_ops->get_channels(dev, &channels); | |
1801 | ||
1802 | if (copy_to_user(useraddr, &channels, sizeof(channels))) | |
1803 | return -EFAULT; | |
1804 | return 0; | |
1805 | } | |
1806 | ||
1807 | static noinline_for_stack int ethtool_set_channels(struct net_device *dev, | |
1808 | void __user *useraddr) | |
1809 | { | |
b8c8a2e2 | 1810 | struct ethtool_channels channels, curr = { .cmd = ETHTOOL_GCHANNELS }; |
1661d346 | 1811 | u16 from_channel, to_channel; |
47f3ecf4 GP |
1812 | u64 max_rxnfc_in_use; |
1813 | u32 max_rxfh_in_use; | |
1661d346 | 1814 | unsigned int i; |
546379b9 | 1815 | int ret; |
8b5933c3 | 1816 | |
8bf36862 | 1817 | if (!dev->ethtool_ops->set_channels || !dev->ethtool_ops->get_channels) |
8b5933c3 | 1818 | return -EOPNOTSUPP; |
1819 | ||
1820 | if (copy_from_user(&channels, useraddr, sizeof(channels))) | |
1821 | return -EFAULT; | |
1822 | ||
b8c8a2e2 | 1823 | dev->ethtool_ops->get_channels(dev, &curr); |
8bf36862 | 1824 | |
75c36dbb JK |
1825 | if (channels.rx_count == curr.rx_count && |
1826 | channels.tx_count == curr.tx_count && | |
1827 | channels.combined_count == curr.combined_count && | |
1828 | channels.other_count == curr.other_count) | |
1829 | return 0; | |
1830 | ||
8bf36862 | 1831 | /* ensure new counts are within the maximums */ |
b8c8a2e2 JK |
1832 | if (channels.rx_count > curr.max_rx || |
1833 | channels.tx_count > curr.max_tx || | |
1834 | channels.combined_count > curr.max_combined || | |
1835 | channels.other_count > curr.max_other) | |
8bf36862 KJ |
1836 | return -EINVAL; |
1837 | ||
7be92514 JK |
1838 | /* ensure there is at least one RX and one TX channel */ |
1839 | if (!channels.combined_count && | |
1840 | (!channels.rx_count || !channels.tx_count)) | |
1841 | return -EINVAL; | |
1842 | ||
d4ab4286 | 1843 | /* ensure the new Rx count fits within the configured Rx flow |
47f3ecf4 GP |
1844 | * indirection table/rxnfc settings */ |
1845 | if (ethtool_get_max_rxnfc_channel(dev, &max_rxnfc_in_use)) | |
1846 | max_rxnfc_in_use = 0; | |
1847 | if (!netif_is_rxfh_configured(dev) || | |
1848 | ethtool_get_max_rxfh_channel(dev, &max_rxfh_in_use)) | |
1849 | max_rxfh_in_use = 0; | |
1850 | if (channels.combined_count + channels.rx_count <= | |
1851 | max_t(u64, max_rxnfc_in_use, max_rxfh_in_use)) | |
1852 | return -EINVAL; | |
d4ab4286 | 1853 | |
1661d346 JK |
1854 | /* Disabling channels, query zero-copy AF_XDP sockets */ |
1855 | from_channel = channels.combined_count + | |
1856 | min(channels.rx_count, channels.tx_count); | |
1857 | to_channel = curr.combined_count + max(curr.rx_count, curr.tx_count); | |
1858 | for (i = from_channel; i < to_channel; i++) | |
c4655761 | 1859 | if (xsk_get_pool_from_qid(dev, i)) |
1661d346 JK |
1860 | return -EINVAL; |
1861 | ||
546379b9 MK |
1862 | ret = dev->ethtool_ops->set_channels(dev, &channels); |
1863 | if (!ret) | |
1864 | ethtool_notify(dev, ETHTOOL_MSG_CHANNELS_NTF, NULL); | |
1865 | return ret; | |
8b5933c3 | 1866 | } |
1867 | ||
1da177e4 LT |
1868 | static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr) |
1869 | { | |
e83887f6 | 1870 | struct ethtool_pauseparam pauseparam = { .cmd = ETHTOOL_GPAUSEPARAM }; |
1da177e4 LT |
1871 | |
1872 | if (!dev->ethtool_ops->get_pauseparam) | |
1873 | return -EOPNOTSUPP; | |
1874 | ||
1875 | dev->ethtool_ops->get_pauseparam(dev, &pauseparam); | |
1876 | ||
1877 | if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam))) | |
1878 | return -EFAULT; | |
1879 | return 0; | |
1880 | } | |
1881 | ||
1882 | static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr) | |
1883 | { | |
1884 | struct ethtool_pauseparam pauseparam; | |
bf37faa3 | 1885 | int ret; |
1da177e4 | 1886 | |
e1b90c41 | 1887 | if (!dev->ethtool_ops->set_pauseparam) |
1da177e4 LT |
1888 | return -EOPNOTSUPP; |
1889 | ||
1890 | if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam))) | |
1891 | return -EFAULT; | |
1892 | ||
bf37faa3 MK |
1893 | ret = dev->ethtool_ops->set_pauseparam(dev, &pauseparam); |
1894 | if (!ret) | |
1895 | ethtool_notify(dev, ETHTOOL_MSG_PAUSE_NTF, NULL); | |
1896 | return ret; | |
1da177e4 LT |
1897 | } |
1898 | ||
1da177e4 LT |
1899 | static int ethtool_self_test(struct net_device *dev, char __user *useraddr) |
1900 | { | |
1901 | struct ethtool_test test; | |
76fd8593 | 1902 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 1903 | u64 *data; |
ff03d49f | 1904 | int ret, test_len; |
1da177e4 | 1905 | |
a9828ec6 | 1906 | if (!ops->self_test || !ops->get_sset_count) |
1da177e4 LT |
1907 | return -EOPNOTSUPP; |
1908 | ||
a9828ec6 | 1909 | test_len = ops->get_sset_count(dev, ETH_SS_TEST); |
ff03d49f JG |
1910 | if (test_len < 0) |
1911 | return test_len; | |
1912 | WARN_ON(test_len == 0); | |
1913 | ||
1da177e4 LT |
1914 | if (copy_from_user(&test, useraddr, sizeof(test))) |
1915 | return -EFAULT; | |
1916 | ||
ff03d49f | 1917 | test.len = test_len; |
80ec82e3 | 1918 | data = kcalloc(test_len, sizeof(u64), GFP_USER); |
1da177e4 LT |
1919 | if (!data) |
1920 | return -ENOMEM; | |
1921 | ||
77e9b2ab | 1922 | netif_testing_on(dev); |
1da177e4 | 1923 | ops->self_test(dev, &test, data); |
77e9b2ab | 1924 | netif_testing_off(dev); |
1da177e4 LT |
1925 | |
1926 | ret = -EFAULT; | |
1927 | if (copy_to_user(useraddr, &test, sizeof(test))) | |
1928 | goto out; | |
1929 | useraddr += sizeof(test); | |
ed717613 | 1930 | if (copy_to_user(useraddr, data, array_size(test.len, sizeof(u64)))) |
1da177e4 LT |
1931 | goto out; |
1932 | ret = 0; | |
1933 | ||
1934 | out: | |
1935 | kfree(data); | |
1936 | return ret; | |
1937 | } | |
1938 | ||
1939 | static int ethtool_get_strings(struct net_device *dev, void __user *useraddr) | |
1940 | { | |
1941 | struct ethtool_gstrings gstrings; | |
1da177e4 LT |
1942 | u8 *data; |
1943 | int ret; | |
1944 | ||
1da177e4 LT |
1945 | if (copy_from_user(&gstrings, useraddr, sizeof(gstrings))) |
1946 | return -EFAULT; | |
1947 | ||
340ae165 | 1948 | ret = __ethtool_get_sset_count(dev, gstrings.string_set); |
a9828ec6 BH |
1949 | if (ret < 0) |
1950 | return ret; | |
4d1ceea8 AS |
1951 | if (ret > S32_MAX / ETH_GSTRING_LEN) |
1952 | return -ENOMEM; | |
1953 | WARN_ON_ONCE(!ret); | |
a9828ec6 BH |
1954 | |
1955 | gstrings.len = ret; | |
1da177e4 | 1956 | |
3d883026 LR |
1957 | if (gstrings.len) { |
1958 | data = vzalloc(array_size(gstrings.len, ETH_GSTRING_LEN)); | |
1959 | if (!data) | |
1960 | return -ENOMEM; | |
1961 | ||
1962 | __ethtool_get_strings(dev, gstrings.string_set, data); | |
1963 | } else { | |
1964 | data = NULL; | |
1965 | } | |
1da177e4 LT |
1966 | |
1967 | ret = -EFAULT; | |
1968 | if (copy_to_user(useraddr, &gstrings, sizeof(gstrings))) | |
1969 | goto out; | |
1970 | useraddr += sizeof(gstrings); | |
4d1ceea8 | 1971 | if (gstrings.len && |
ed717613 GS |
1972 | copy_to_user(useraddr, data, |
1973 | array_size(gstrings.len, ETH_GSTRING_LEN))) | |
1da177e4 LT |
1974 | goto out; |
1975 | ret = 0; | |
1976 | ||
340ae165 | 1977 | out: |
4d1ceea8 | 1978 | vfree(data); |
1da177e4 LT |
1979 | return ret; |
1980 | } | |
1981 | ||
7888fe53 AD |
1982 | __printf(2, 3) void ethtool_sprintf(u8 **data, const char *fmt, ...) |
1983 | { | |
1984 | va_list args; | |
1985 | ||
1986 | va_start(args, fmt); | |
1987 | vsnprintf(*data, ETH_GSTRING_LEN, fmt, args); | |
1988 | va_end(args); | |
1989 | ||
1990 | *data += ETH_GSTRING_LEN; | |
1991 | } | |
1992 | EXPORT_SYMBOL(ethtool_sprintf); | |
1993 | ||
1da177e4 LT |
1994 | static int ethtool_phys_id(struct net_device *dev, void __user *useraddr) |
1995 | { | |
1996 | struct ethtool_value id; | |
68f512f2 | 1997 | static bool busy; |
c03a14e8 | 1998 | const struct ethtool_ops *ops = dev->ethtool_ops; |
5ae21950 | 1999 | netdevice_tracker dev_tracker; |
68f512f2 | 2000 | int rc; |
1da177e4 | 2001 | |
c03a14e8 | 2002 | if (!ops->set_phys_id) |
1da177e4 LT |
2003 | return -EOPNOTSUPP; |
2004 | ||
68f512f2 BH |
2005 | if (busy) |
2006 | return -EBUSY; | |
2007 | ||
1da177e4 LT |
2008 | if (copy_from_user(&id, useraddr, sizeof(id))) |
2009 | return -EFAULT; | |
2010 | ||
c03a14e8 | 2011 | rc = ops->set_phys_id(dev, ETHTOOL_ID_ACTIVE); |
fce55922 | 2012 | if (rc < 0) |
68f512f2 BH |
2013 | return rc; |
2014 | ||
2015 | /* Drop the RTNL lock while waiting, but prevent reentry or | |
2016 | * removal of the device. | |
2017 | */ | |
2018 | busy = true; | |
d62607c3 | 2019 | netdev_hold(dev, &dev_tracker, GFP_KERNEL); |
68f512f2 BH |
2020 | rtnl_unlock(); |
2021 | ||
2022 | if (rc == 0) { | |
2023 | /* Driver will handle this itself */ | |
2024 | schedule_timeout_interruptible( | |
143780c6 | 2025 | id.data ? (id.data * HZ) : MAX_SCHEDULE_TIMEOUT); |
68f512f2 | 2026 | } else { |
fce55922 | 2027 | /* Driver expects to be called at twice the frequency in rc */ |
2adc6edc | 2028 | int n = rc * 2, interval = HZ / n; |
64a8f8f7 MK |
2029 | u64 count = mul_u32_u32(n, id.data); |
2030 | u64 i = 0; | |
fce55922 | 2031 | |
68f512f2 | 2032 | do { |
2adc6edc EC |
2033 | rtnl_lock(); |
2034 | rc = ops->set_phys_id(dev, | |
2035 | (i++ & 1) ? ETHTOOL_ID_OFF : ETHTOOL_ID_ON); | |
2036 | rtnl_unlock(); | |
2037 | if (rc) | |
2038 | break; | |
2039 | schedule_timeout_interruptible(interval); | |
2040 | } while (!signal_pending(current) && (!id.data || i < count)); | |
68f512f2 BH |
2041 | } |
2042 | ||
2043 | rtnl_lock(); | |
d62607c3 | 2044 | netdev_put(dev, &dev_tracker); |
68f512f2 BH |
2045 | busy = false; |
2046 | ||
c03a14e8 | 2047 | (void) ops->set_phys_id(dev, ETHTOOL_ID_INACTIVE); |
68f512f2 | 2048 | return rc; |
1da177e4 LT |
2049 | } |
2050 | ||
2051 | static int ethtool_get_stats(struct net_device *dev, void __user *useraddr) | |
2052 | { | |
2053 | struct ethtool_stats stats; | |
76fd8593 | 2054 | const struct ethtool_ops *ops = dev->ethtool_ops; |
1da177e4 | 2055 | u64 *data; |
ff03d49f | 2056 | int ret, n_stats; |
1da177e4 | 2057 | |
a9828ec6 | 2058 | if (!ops->get_ethtool_stats || !ops->get_sset_count) |
1da177e4 LT |
2059 | return -EOPNOTSUPP; |
2060 | ||
a9828ec6 | 2061 | n_stats = ops->get_sset_count(dev, ETH_SS_STATS); |
ff03d49f JG |
2062 | if (n_stats < 0) |
2063 | return n_stats; | |
4d1ceea8 AS |
2064 | if (n_stats > S32_MAX / sizeof(u64)) |
2065 | return -ENOMEM; | |
2066 | WARN_ON_ONCE(!n_stats); | |
1da177e4 LT |
2067 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
2068 | return -EFAULT; | |
2069 | ||
ff03d49f | 2070 | stats.n_stats = n_stats; |
1da177e4 | 2071 | |
3d883026 LR |
2072 | if (n_stats) { |
2073 | data = vzalloc(array_size(n_stats, sizeof(u64))); | |
2074 | if (!data) | |
2075 | return -ENOMEM; | |
2076 | ops->get_ethtool_stats(dev, &stats, data); | |
2077 | } else { | |
2078 | data = NULL; | |
2079 | } | |
1da177e4 LT |
2080 | |
2081 | ret = -EFAULT; | |
2082 | if (copy_to_user(useraddr, &stats, sizeof(stats))) | |
2083 | goto out; | |
2084 | useraddr += sizeof(stats); | |
3dd14996 | 2085 | if (n_stats && copy_to_user(useraddr, data, array_size(n_stats, sizeof(u64)))) |
1da177e4 LT |
2086 | goto out; |
2087 | ret = 0; | |
2088 | ||
2089 | out: | |
4d1ceea8 | 2090 | vfree(data); |
1da177e4 LT |
2091 | return ret; |
2092 | } | |
2093 | ||
201ed315 | 2094 | static int ethtool_vzalloc_stats_array(int n_stats, u64 **data) |
f3a40945 | 2095 | { |
f3a40945 AL |
2096 | if (n_stats < 0) |
2097 | return n_stats; | |
4d1ceea8 AS |
2098 | if (n_stats > S32_MAX / sizeof(u64)) |
2099 | return -ENOMEM; | |
9deb1e9f DT |
2100 | if (WARN_ON_ONCE(!n_stats)) |
2101 | return -EOPNOTSUPP; | |
f3a40945 | 2102 | |
201ed315 DT |
2103 | *data = vzalloc(array_size(n_stats, sizeof(u64))); |
2104 | if (!*data) | |
2105 | return -ENOMEM; | |
2106 | ||
2107 | return 0; | |
2108 | } | |
2109 | ||
2110 | static int ethtool_get_phy_stats_phydev(struct phy_device *phydev, | |
2111 | struct ethtool_stats *stats, | |
2112 | u64 **data) | |
2113 | { | |
2114 | const struct ethtool_phy_ops *phy_ops = ethtool_phy_ops; | |
2115 | int n_stats, ret; | |
2116 | ||
2117 | if (!phy_ops || !phy_ops->get_sset_count || !phy_ops->get_stats) | |
2118 | return -EOPNOTSUPP; | |
2119 | ||
2120 | n_stats = phy_ops->get_sset_count(phydev); | |
2121 | ||
2122 | ret = ethtool_vzalloc_stats_array(n_stats, data); | |
2123 | if (ret) | |
2124 | return ret; | |
2125 | ||
2126 | stats->n_stats = n_stats; | |
2127 | return phy_ops->get_stats(phydev, stats, *data); | |
2128 | } | |
2129 | ||
2130 | static int ethtool_get_phy_stats_ethtool(struct net_device *dev, | |
2131 | struct ethtool_stats *stats, | |
2132 | u64 **data) | |
2133 | { | |
2134 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2135 | int n_stats, ret; | |
2136 | ||
2137 | if (!ops || !ops->get_sset_count || ops->get_ethtool_phy_stats) | |
2138 | return -EOPNOTSUPP; | |
2139 | ||
2140 | n_stats = ops->get_sset_count(dev, ETH_SS_PHY_STATS); | |
2141 | ||
2142 | ret = ethtool_vzalloc_stats_array(n_stats, data); | |
2143 | if (ret) | |
2144 | return ret; | |
2145 | ||
2146 | stats->n_stats = n_stats; | |
2147 | ops->get_ethtool_phy_stats(dev, stats, *data); | |
2148 | ||
2149 | return 0; | |
2150 | } | |
2151 | ||
2152 | static int ethtool_get_phy_stats(struct net_device *dev, void __user *useraddr) | |
2153 | { | |
2154 | struct phy_device *phydev = dev->phydev; | |
2155 | struct ethtool_stats stats; | |
2156 | u64 *data = NULL; | |
2157 | int ret = -EOPNOTSUPP; | |
2158 | ||
f3a40945 AL |
2159 | if (copy_from_user(&stats, useraddr, sizeof(stats))) |
2160 | return -EFAULT; | |
2161 | ||
201ed315 DT |
2162 | if (phydev) |
2163 | ret = ethtool_get_phy_stats_phydev(phydev, &stats, &data); | |
f3a40945 | 2164 | |
201ed315 DT |
2165 | if (ret == -EOPNOTSUPP) |
2166 | ret = ethtool_get_phy_stats_ethtool(dev, &stats, &data); | |
3d883026 | 2167 | |
201ed315 DT |
2168 | if (ret) |
2169 | goto out; | |
f3a40945 | 2170 | |
201ed315 DT |
2171 | if (copy_to_user(useraddr, &stats, sizeof(stats))) { |
2172 | ret = -EFAULT; | |
f3a40945 | 2173 | goto out; |
201ed315 DT |
2174 | } |
2175 | ||
f3a40945 | 2176 | useraddr += sizeof(stats); |
201ed315 DT |
2177 | if (copy_to_user(useraddr, data, array_size(stats.n_stats, sizeof(u64)))) |
2178 | ret = -EFAULT; | |
f3a40945 AL |
2179 | |
2180 | out: | |
4d1ceea8 | 2181 | vfree(data); |
f3a40945 AL |
2182 | return ret; |
2183 | } | |
2184 | ||
0bf0519d | 2185 | static int ethtool_get_perm_addr(struct net_device *dev, void __user *useraddr) |
a6f9a705 JW |
2186 | { |
2187 | struct ethtool_perm_addr epaddr; | |
a6f9a705 | 2188 | |
313674af | 2189 | if (copy_from_user(&epaddr, useraddr, sizeof(epaddr))) |
a6f9a705 JW |
2190 | return -EFAULT; |
2191 | ||
313674af MW |
2192 | if (epaddr.size < dev->addr_len) |
2193 | return -ETOOSMALL; | |
2194 | epaddr.size = dev->addr_len; | |
a6f9a705 | 2195 | |
a6f9a705 | 2196 | if (copy_to_user(useraddr, &epaddr, sizeof(epaddr))) |
313674af | 2197 | return -EFAULT; |
a6f9a705 | 2198 | useraddr += sizeof(epaddr); |
313674af MW |
2199 | if (copy_to_user(useraddr, dev->perm_addr, epaddr.size)) |
2200 | return -EFAULT; | |
2201 | return 0; | |
a6f9a705 JW |
2202 | } |
2203 | ||
13c99b24 JG |
2204 | static int ethtool_get_value(struct net_device *dev, char __user *useraddr, |
2205 | u32 cmd, u32 (*actor)(struct net_device *)) | |
3ae7c0b2 | 2206 | { |
8e557421 | 2207 | struct ethtool_value edata = { .cmd = cmd }; |
3ae7c0b2 | 2208 | |
13c99b24 | 2209 | if (!actor) |
3ae7c0b2 JG |
2210 | return -EOPNOTSUPP; |
2211 | ||
13c99b24 | 2212 | edata.data = actor(dev); |
3ae7c0b2 JG |
2213 | |
2214 | if (copy_to_user(useraddr, &edata, sizeof(edata))) | |
2215 | return -EFAULT; | |
2216 | return 0; | |
2217 | } | |
2218 | ||
13c99b24 JG |
2219 | static int ethtool_set_value_void(struct net_device *dev, char __user *useraddr, |
2220 | void (*actor)(struct net_device *, u32)) | |
3ae7c0b2 JG |
2221 | { |
2222 | struct ethtool_value edata; | |
2223 | ||
13c99b24 | 2224 | if (!actor) |
3ae7c0b2 JG |
2225 | return -EOPNOTSUPP; |
2226 | ||
2227 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2228 | return -EFAULT; | |
2229 | ||
13c99b24 | 2230 | actor(dev, edata.data); |
339bf024 JG |
2231 | return 0; |
2232 | } | |
2233 | ||
13c99b24 JG |
2234 | static int ethtool_set_value(struct net_device *dev, char __user *useraddr, |
2235 | int (*actor)(struct net_device *, u32)) | |
339bf024 JG |
2236 | { |
2237 | struct ethtool_value edata; | |
2238 | ||
13c99b24 | 2239 | if (!actor) |
339bf024 JG |
2240 | return -EOPNOTSUPP; |
2241 | ||
2242 | if (copy_from_user(&edata, useraddr, sizeof(edata))) | |
2243 | return -EFAULT; | |
2244 | ||
13c99b24 | 2245 | return actor(dev, edata.data); |
339bf024 JG |
2246 | } |
2247 | ||
095cfcfe JK |
2248 | static int |
2249 | ethtool_flash_device(struct net_device *dev, struct ethtool_devlink_compat *req) | |
05c6a8d7 | 2250 | { |
1af0a094 JK |
2251 | if (!dev->ethtool_ops->flash_device) { |
2252 | req->devlink = netdev_to_devlink_get(dev); | |
2253 | return 0; | |
2254 | } | |
786f5281 | 2255 | |
095cfcfe | 2256 | return dev->ethtool_ops->flash_device(dev, &req->efl); |
05c6a8d7 AK |
2257 | } |
2258 | ||
29dd54b7 AC |
2259 | static int ethtool_set_dump(struct net_device *dev, |
2260 | void __user *useraddr) | |
2261 | { | |
2262 | struct ethtool_dump dump; | |
2263 | ||
2264 | if (!dev->ethtool_ops->set_dump) | |
2265 | return -EOPNOTSUPP; | |
2266 | ||
2267 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2268 | return -EFAULT; | |
2269 | ||
2270 | return dev->ethtool_ops->set_dump(dev, &dump); | |
2271 | } | |
2272 | ||
2273 | static int ethtool_get_dump_flag(struct net_device *dev, | |
2274 | void __user *useraddr) | |
2275 | { | |
2276 | int ret; | |
2277 | struct ethtool_dump dump; | |
2278 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2279 | ||
c03a14e8 | 2280 | if (!ops->get_dump_flag) |
29dd54b7 AC |
2281 | return -EOPNOTSUPP; |
2282 | ||
2283 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2284 | return -EFAULT; | |
2285 | ||
2286 | ret = ops->get_dump_flag(dev, &dump); | |
2287 | if (ret) | |
2288 | return ret; | |
2289 | ||
2290 | if (copy_to_user(useraddr, &dump, sizeof(dump))) | |
2291 | return -EFAULT; | |
2292 | return 0; | |
2293 | } | |
2294 | ||
2295 | static int ethtool_get_dump_data(struct net_device *dev, | |
2296 | void __user *useraddr) | |
2297 | { | |
2298 | int ret; | |
2299 | __u32 len; | |
2300 | struct ethtool_dump dump, tmp; | |
2301 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2302 | void *data = NULL; | |
2303 | ||
c03a14e8 | 2304 | if (!ops->get_dump_data || !ops->get_dump_flag) |
29dd54b7 AC |
2305 | return -EOPNOTSUPP; |
2306 | ||
2307 | if (copy_from_user(&dump, useraddr, sizeof(dump))) | |
2308 | return -EFAULT; | |
2309 | ||
2310 | memset(&tmp, 0, sizeof(tmp)); | |
2311 | tmp.cmd = ETHTOOL_GET_DUMP_FLAG; | |
2312 | ret = ops->get_dump_flag(dev, &tmp); | |
2313 | if (ret) | |
2314 | return ret; | |
2315 | ||
c590b5e2 | 2316 | len = min(tmp.len, dump.len); |
29dd54b7 AC |
2317 | if (!len) |
2318 | return -EFAULT; | |
2319 | ||
c590b5e2 MS |
2320 | /* Don't ever let the driver think there's more space available |
2321 | * than it requested with .get_dump_flag(). | |
2322 | */ | |
2323 | dump.len = len; | |
2324 | ||
2325 | /* Always allocate enough space to hold the whole thing so that the | |
2326 | * driver does not need to check the length and bother with partial | |
2327 | * dumping. | |
2328 | */ | |
29dd54b7 AC |
2329 | data = vzalloc(tmp.len); |
2330 | if (!data) | |
2331 | return -ENOMEM; | |
2332 | ret = ops->get_dump_data(dev, &dump, data); | |
2333 | if (ret) | |
2334 | goto out; | |
2335 | ||
c590b5e2 MS |
2336 | /* There are two sane possibilities: |
2337 | * 1. The driver's .get_dump_data() does not touch dump.len. | |
2338 | * 2. Or it may set dump.len to how much it really writes, which | |
2339 | * should be tmp.len (or len if it can do a partial dump). | |
2340 | * In any case respond to userspace with the actual length of data | |
2341 | * it's receiving. | |
2342 | */ | |
2343 | WARN_ON(dump.len != len && dump.len != tmp.len); | |
2344 | dump.len = len; | |
2345 | ||
29dd54b7 AC |
2346 | if (copy_to_user(useraddr, &dump, sizeof(dump))) { |
2347 | ret = -EFAULT; | |
2348 | goto out; | |
2349 | } | |
2350 | useraddr += offsetof(struct ethtool_dump, data); | |
2351 | if (copy_to_user(useraddr, data, len)) | |
2352 | ret = -EFAULT; | |
2353 | out: | |
2354 | vfree(data); | |
2355 | return ret; | |
2356 | } | |
2357 | ||
c8f3a8c3 RC |
2358 | static int ethtool_get_ts_info(struct net_device *dev, void __user *useraddr) |
2359 | { | |
c8f3a8c3 | 2360 | struct ethtool_ts_info info; |
5b071c59 | 2361 | int err; |
c8f3a8c3 | 2362 | |
5b071c59 | 2363 | err = __ethtool_get_ts_info(dev, &info); |
c8f3a8c3 RC |
2364 | if (err) |
2365 | return err; | |
2366 | ||
2367 | if (copy_to_user(useraddr, &info, sizeof(info))) | |
5b071c59 | 2368 | return -EFAULT; |
c8f3a8c3 | 2369 | |
5b071c59 | 2370 | return 0; |
c8f3a8c3 RC |
2371 | } |
2372 | ||
95dfc7ef AL |
2373 | int ethtool_get_module_info_call(struct net_device *dev, |
2374 | struct ethtool_modinfo *modinfo) | |
2f438366 ES |
2375 | { |
2376 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2377 | struct phy_device *phydev = dev->phydev; | |
2378 | ||
e679c9c1 RK |
2379 | if (dev->sfp_bus) |
2380 | return sfp_get_module_info(dev->sfp_bus, modinfo); | |
2381 | ||
2f438366 ES |
2382 | if (phydev && phydev->drv && phydev->drv->module_info) |
2383 | return phydev->drv->module_info(phydev, modinfo); | |
2384 | ||
2385 | if (ops->get_module_info) | |
2386 | return ops->get_module_info(dev, modinfo); | |
2387 | ||
2388 | return -EOPNOTSUPP; | |
2389 | } | |
2390 | ||
41c3cb6d SH |
2391 | static int ethtool_get_module_info(struct net_device *dev, |
2392 | void __user *useraddr) | |
2393 | { | |
2394 | int ret; | |
2395 | struct ethtool_modinfo modinfo; | |
41c3cb6d SH |
2396 | |
2397 | if (copy_from_user(&modinfo, useraddr, sizeof(modinfo))) | |
2398 | return -EFAULT; | |
2399 | ||
95dfc7ef | 2400 | ret = ethtool_get_module_info_call(dev, &modinfo); |
41c3cb6d SH |
2401 | if (ret) |
2402 | return ret; | |
2403 | ||
2404 | if (copy_to_user(useraddr, &modinfo, sizeof(modinfo))) | |
2405 | return -EFAULT; | |
2406 | ||
2407 | return 0; | |
2408 | } | |
2409 | ||
95dfc7ef AL |
2410 | int ethtool_get_module_eeprom_call(struct net_device *dev, |
2411 | struct ethtool_eeprom *ee, u8 *data) | |
2f438366 ES |
2412 | { |
2413 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2414 | struct phy_device *phydev = dev->phydev; | |
2415 | ||
e679c9c1 RK |
2416 | if (dev->sfp_bus) |
2417 | return sfp_get_module_eeprom(dev->sfp_bus, ee, data); | |
2418 | ||
2f438366 ES |
2419 | if (phydev && phydev->drv && phydev->drv->module_eeprom) |
2420 | return phydev->drv->module_eeprom(phydev, ee, data); | |
2421 | ||
2422 | if (ops->get_module_eeprom) | |
2423 | return ops->get_module_eeprom(dev, ee, data); | |
2424 | ||
2425 | return -EOPNOTSUPP; | |
2426 | } | |
2427 | ||
41c3cb6d SH |
2428 | static int ethtool_get_module_eeprom(struct net_device *dev, |
2429 | void __user *useraddr) | |
2430 | { | |
2431 | int ret; | |
2432 | struct ethtool_modinfo modinfo; | |
41c3cb6d | 2433 | |
95dfc7ef | 2434 | ret = ethtool_get_module_info_call(dev, &modinfo); |
41c3cb6d SH |
2435 | if (ret) |
2436 | return ret; | |
2437 | ||
2f438366 | 2438 | return ethtool_get_any_eeprom(dev, useraddr, |
95dfc7ef | 2439 | ethtool_get_module_eeprom_call, |
41c3cb6d SH |
2440 | modinfo.eeprom_len); |
2441 | } | |
2442 | ||
f0db9b07 GV |
2443 | static int ethtool_tunable_valid(const struct ethtool_tunable *tuna) |
2444 | { | |
2445 | switch (tuna->id) { | |
2446 | case ETHTOOL_RX_COPYBREAK: | |
1255a505 | 2447 | case ETHTOOL_TX_COPYBREAK: |
448f413a | 2448 | case ETHTOOL_TX_COPYBREAK_BUF_SIZE: |
f0db9b07 GV |
2449 | if (tuna->len != sizeof(u32) || |
2450 | tuna->type_id != ETHTOOL_TUNABLE_U32) | |
2451 | return -EINVAL; | |
2452 | break; | |
e1577c1c IK |
2453 | case ETHTOOL_PFC_PREVENTION_TOUT: |
2454 | if (tuna->len != sizeof(u16) || | |
2455 | tuna->type_id != ETHTOOL_TUNABLE_U16) | |
2456 | return -EINVAL; | |
2457 | break; | |
f0db9b07 GV |
2458 | default: |
2459 | return -EINVAL; | |
2460 | } | |
2461 | ||
2462 | return 0; | |
2463 | } | |
2464 | ||
2465 | static int ethtool_get_tunable(struct net_device *dev, void __user *useraddr) | |
2466 | { | |
2467 | int ret; | |
2468 | struct ethtool_tunable tuna; | |
2469 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2470 | void *data; | |
2471 | ||
2472 | if (!ops->get_tunable) | |
2473 | return -EOPNOTSUPP; | |
2474 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2475 | return -EFAULT; | |
2476 | ret = ethtool_tunable_valid(&tuna); | |
2477 | if (ret) | |
2478 | return ret; | |
80ec82e3 | 2479 | data = kzalloc(tuna.len, GFP_USER); |
f0db9b07 GV |
2480 | if (!data) |
2481 | return -ENOMEM; | |
2482 | ret = ops->get_tunable(dev, &tuna, data); | |
2483 | if (ret) | |
2484 | goto out; | |
2485 | useraddr += sizeof(tuna); | |
2486 | ret = -EFAULT; | |
2487 | if (copy_to_user(useraddr, data, tuna.len)) | |
2488 | goto out; | |
2489 | ret = 0; | |
2490 | ||
2491 | out: | |
2492 | kfree(data); | |
2493 | return ret; | |
2494 | } | |
2495 | ||
2496 | static int ethtool_set_tunable(struct net_device *dev, void __user *useraddr) | |
2497 | { | |
2498 | int ret; | |
2499 | struct ethtool_tunable tuna; | |
2500 | const struct ethtool_ops *ops = dev->ethtool_ops; | |
2501 | void *data; | |
2502 | ||
2503 | if (!ops->set_tunable) | |
2504 | return -EOPNOTSUPP; | |
2505 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2506 | return -EFAULT; | |
2507 | ret = ethtool_tunable_valid(&tuna); | |
2508 | if (ret) | |
2509 | return ret; | |
f0db9b07 | 2510 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2511 | data = memdup_user(useraddr, tuna.len); |
2512 | if (IS_ERR(data)) | |
2513 | return PTR_ERR(data); | |
f0db9b07 GV |
2514 | ret = ops->set_tunable(dev, &tuna, data); |
2515 | ||
f0db9b07 GV |
2516 | kfree(data); |
2517 | return ret; | |
2518 | } | |
2519 | ||
3499e87e AB |
2520 | static noinline_for_stack int |
2521 | ethtool_get_per_queue_coalesce(struct net_device *dev, | |
2522 | void __user *useraddr, | |
2523 | struct ethtool_per_queue_op *per_queue_opt) | |
421797b1 KL |
2524 | { |
2525 | u32 bit; | |
2526 | int ret; | |
2527 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2528 | ||
2529 | if (!dev->ethtool_ops->get_per_queue_coalesce) | |
2530 | return -EOPNOTSUPP; | |
2531 | ||
2532 | useraddr += sizeof(*per_queue_opt); | |
2533 | ||
3aa56885 YN |
2534 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, |
2535 | MAX_NUM_QUEUE); | |
421797b1 KL |
2536 | |
2537 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2538 | struct ethtool_coalesce coalesce = { .cmd = ETHTOOL_GCOALESCE }; | |
2539 | ||
2540 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, &coalesce); | |
2541 | if (ret != 0) | |
2542 | return ret; | |
2543 | if (copy_to_user(useraddr, &coalesce, sizeof(coalesce))) | |
2544 | return -EFAULT; | |
2545 | useraddr += sizeof(coalesce); | |
2546 | } | |
2547 | ||
2548 | return 0; | |
2549 | } | |
2550 | ||
3499e87e AB |
2551 | static noinline_for_stack int |
2552 | ethtool_set_per_queue_coalesce(struct net_device *dev, | |
2553 | void __user *useraddr, | |
2554 | struct ethtool_per_queue_op *per_queue_opt) | |
f38d138a KL |
2555 | { |
2556 | u32 bit; | |
2557 | int i, ret = 0; | |
2558 | int n_queue; | |
2559 | struct ethtool_coalesce *backup = NULL, *tmp = NULL; | |
2560 | DECLARE_BITMAP(queue_mask, MAX_NUM_QUEUE); | |
2561 | ||
2562 | if ((!dev->ethtool_ops->set_per_queue_coalesce) || | |
2563 | (!dev->ethtool_ops->get_per_queue_coalesce)) | |
2564 | return -EOPNOTSUPP; | |
2565 | ||
2566 | useraddr += sizeof(*per_queue_opt); | |
2567 | ||
3aa56885 | 2568 | bitmap_from_arr32(queue_mask, per_queue_opt->queue_mask, MAX_NUM_QUEUE); |
f38d138a KL |
2569 | n_queue = bitmap_weight(queue_mask, MAX_NUM_QUEUE); |
2570 | tmp = backup = kmalloc_array(n_queue, sizeof(*backup), GFP_KERNEL); | |
2571 | if (!backup) | |
2572 | return -ENOMEM; | |
2573 | ||
2574 | for_each_set_bit(bit, queue_mask, MAX_NUM_QUEUE) { | |
2575 | struct ethtool_coalesce coalesce; | |
2576 | ||
2577 | ret = dev->ethtool_ops->get_per_queue_coalesce(dev, bit, tmp); | |
2578 | if (ret != 0) | |
2579 | goto roll_back; | |
2580 | ||
2581 | tmp++; | |
2582 | ||
2583 | if (copy_from_user(&coalesce, useraddr, sizeof(coalesce))) { | |
2584 | ret = -EFAULT; | |
2585 | goto roll_back; | |
2586 | } | |
2587 | ||
95cddcb5 JK |
2588 | if (!ethtool_set_coalesce_supported(dev, &coalesce)) { |
2589 | ret = -EOPNOTSUPP; | |
2590 | goto roll_back; | |
2591 | } | |
2592 | ||
f38d138a KL |
2593 | ret = dev->ethtool_ops->set_per_queue_coalesce(dev, bit, &coalesce); |
2594 | if (ret != 0) | |
2595 | goto roll_back; | |
2596 | ||
2597 | useraddr += sizeof(coalesce); | |
2598 | } | |
2599 | ||
2600 | roll_back: | |
2601 | if (ret != 0) { | |
2602 | tmp = backup; | |
2603 | for_each_set_bit(i, queue_mask, bit) { | |
2604 | dev->ethtool_ops->set_per_queue_coalesce(dev, i, tmp); | |
2605 | tmp++; | |
2606 | } | |
2607 | } | |
2608 | kfree(backup); | |
2609 | ||
2610 | return ret; | |
2611 | } | |
2612 | ||
3499e87e | 2613 | static int noinline_for_stack ethtool_set_per_queue(struct net_device *dev, |
58f5bbe3 | 2614 | void __user *useraddr, u32 sub_cmd) |
ac2c7ad0 KL |
2615 | { |
2616 | struct ethtool_per_queue_op per_queue_opt; | |
2617 | ||
2618 | if (copy_from_user(&per_queue_opt, useraddr, sizeof(per_queue_opt))) | |
2619 | return -EFAULT; | |
2620 | ||
58f5bbe3 WW |
2621 | if (per_queue_opt.sub_command != sub_cmd) |
2622 | return -EINVAL; | |
2623 | ||
ac2c7ad0 | 2624 | switch (per_queue_opt.sub_command) { |
421797b1 KL |
2625 | case ETHTOOL_GCOALESCE: |
2626 | return ethtool_get_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
f38d138a KL |
2627 | case ETHTOOL_SCOALESCE: |
2628 | return ethtool_set_per_queue_coalesce(dev, useraddr, &per_queue_opt); | |
ac2c7ad0 KL |
2629 | default: |
2630 | return -EOPNOTSUPP; | |
9d253c02 | 2631 | } |
ac2c7ad0 KL |
2632 | } |
2633 | ||
968ad9da RL |
2634 | static int ethtool_phy_tunable_valid(const struct ethtool_tunable *tuna) |
2635 | { | |
2636 | switch (tuna->id) { | |
65feddd5 | 2637 | case ETHTOOL_PHY_DOWNSHIFT: |
3aeb0803 | 2638 | case ETHTOOL_PHY_FAST_LINK_DOWN: |
65feddd5 RL |
2639 | if (tuna->len != sizeof(u8) || |
2640 | tuna->type_id != ETHTOOL_TUNABLE_U8) | |
2641 | return -EINVAL; | |
2642 | break; | |
9f2f13f4 AA |
2643 | case ETHTOOL_PHY_EDPD: |
2644 | if (tuna->len != sizeof(u16) || | |
2645 | tuna->type_id != ETHTOOL_TUNABLE_U16) | |
2646 | return -EINVAL; | |
2647 | break; | |
968ad9da RL |
2648 | default: |
2649 | return -EINVAL; | |
2650 | } | |
2651 | ||
2652 | return 0; | |
2653 | } | |
2654 | ||
2655 | static int get_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2656 | { | |
968ad9da | 2657 | struct phy_device *phydev = dev->phydev; |
c6db31ff IR |
2658 | struct ethtool_tunable tuna; |
2659 | bool phy_drv_tunable; | |
968ad9da | 2660 | void *data; |
c6db31ff | 2661 | int ret; |
968ad9da | 2662 | |
c6db31ff IR |
2663 | phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; |
2664 | if (!phy_drv_tunable && !dev->ethtool_ops->get_phy_tunable) | |
968ad9da | 2665 | return -EOPNOTSUPP; |
968ad9da RL |
2666 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) |
2667 | return -EFAULT; | |
2668 | ret = ethtool_phy_tunable_valid(&tuna); | |
2669 | if (ret) | |
2670 | return ret; | |
80ec82e3 | 2671 | data = kzalloc(tuna.len, GFP_USER); |
968ad9da RL |
2672 | if (!data) |
2673 | return -ENOMEM; | |
c6db31ff IR |
2674 | if (phy_drv_tunable) { |
2675 | mutex_lock(&phydev->lock); | |
2676 | ret = phydev->drv->get_tunable(phydev, &tuna, data); | |
2677 | mutex_unlock(&phydev->lock); | |
2678 | } else { | |
2679 | ret = dev->ethtool_ops->get_phy_tunable(dev, &tuna, data); | |
2680 | } | |
968ad9da RL |
2681 | if (ret) |
2682 | goto out; | |
2683 | useraddr += sizeof(tuna); | |
2684 | ret = -EFAULT; | |
2685 | if (copy_to_user(useraddr, data, tuna.len)) | |
2686 | goto out; | |
2687 | ret = 0; | |
2688 | ||
2689 | out: | |
2690 | kfree(data); | |
2691 | return ret; | |
2692 | } | |
2693 | ||
2694 | static int set_phy_tunable(struct net_device *dev, void __user *useraddr) | |
2695 | { | |
968ad9da | 2696 | struct phy_device *phydev = dev->phydev; |
c6db31ff IR |
2697 | struct ethtool_tunable tuna; |
2698 | bool phy_drv_tunable; | |
968ad9da | 2699 | void *data; |
c6db31ff | 2700 | int ret; |
968ad9da | 2701 | |
c6db31ff IR |
2702 | phy_drv_tunable = phydev && phydev->drv && phydev->drv->get_tunable; |
2703 | if (!phy_drv_tunable && !dev->ethtool_ops->set_phy_tunable) | |
968ad9da RL |
2704 | return -EOPNOTSUPP; |
2705 | if (copy_from_user(&tuna, useraddr, sizeof(tuna))) | |
2706 | return -EFAULT; | |
2707 | ret = ethtool_phy_tunable_valid(&tuna); | |
2708 | if (ret) | |
2709 | return ret; | |
968ad9da | 2710 | useraddr += sizeof(tuna); |
30e7e3ec AV |
2711 | data = memdup_user(useraddr, tuna.len); |
2712 | if (IS_ERR(data)) | |
2713 | return PTR_ERR(data); | |
c6db31ff IR |
2714 | if (phy_drv_tunable) { |
2715 | mutex_lock(&phydev->lock); | |
2716 | ret = phydev->drv->set_tunable(phydev, &tuna, data); | |
2717 | mutex_unlock(&phydev->lock); | |
2718 | } else { | |
2719 | ret = dev->ethtool_ops->set_phy_tunable(dev, &tuna, data); | |
2720 | } | |
968ad9da | 2721 | |
968ad9da RL |
2722 | kfree(data); |
2723 | return ret; | |
2724 | } | |
2725 | ||
1a5f3da2 VSR |
2726 | static int ethtool_get_fecparam(struct net_device *dev, void __user *useraddr) |
2727 | { | |
e83887f6 | 2728 | struct ethtool_fecparam fecparam = { .cmd = ETHTOOL_GFECPARAM }; |
a6d50512 | 2729 | int rc; |
1a5f3da2 VSR |
2730 | |
2731 | if (!dev->ethtool_ops->get_fecparam) | |
2732 | return -EOPNOTSUPP; | |
2733 | ||
a6d50512 EC |
2734 | rc = dev->ethtool_ops->get_fecparam(dev, &fecparam); |
2735 | if (rc) | |
2736 | return rc; | |
1a5f3da2 | 2737 | |
240e1144 JK |
2738 | if (WARN_ON_ONCE(fecparam.reserved)) |
2739 | fecparam.reserved = 0; | |
2740 | ||
1a5f3da2 VSR |
2741 | if (copy_to_user(useraddr, &fecparam, sizeof(fecparam))) |
2742 | return -EFAULT; | |
2743 | return 0; | |
2744 | } | |
2745 | ||
2746 | static int ethtool_set_fecparam(struct net_device *dev, void __user *useraddr) | |
2747 | { | |
2748 | struct ethtool_fecparam fecparam; | |
2749 | ||
2750 | if (!dev->ethtool_ops->set_fecparam) | |
2751 | return -EOPNOTSUPP; | |
2752 | ||
2753 | if (copy_from_user(&fecparam, useraddr, sizeof(fecparam))) | |
2754 | return -EFAULT; | |
2755 | ||
cf2cc0bf | 2756 | if (!fecparam.fec || fecparam.fec & ETHTOOL_FEC_NONE) |
42ce127d JK |
2757 | return -EINVAL; |
2758 | ||
d3b37fc8 | 2759 | fecparam.active_fec = 0; |
240e1144 JK |
2760 | fecparam.reserved = 0; |
2761 | ||
1a5f3da2 VSR |
2762 | return dev->ethtool_ops->set_fecparam(dev, &fecparam); |
2763 | } | |
2764 | ||
600fed5e | 2765 | /* The main entry point in this file. Called from net/core/dev_ioctl.c */ |
1da177e4 | 2766 | |
f49deaa6 | 2767 | static int |
095cfcfe JK |
2768 | __dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr, |
2769 | u32 ethcmd, struct ethtool_devlink_compat *devlink_state) | |
1da177e4 | 2770 | { |
095cfcfe JK |
2771 | struct net_device *dev; |
2772 | u32 sub_cmd; | |
1da177e4 | 2773 | int rc; |
b29d3145 | 2774 | netdev_features_t old_features; |
1da177e4 | 2775 | |
095cfcfe | 2776 | dev = __dev_get_by_name(net, ifr->ifr_name); |
f32a2137 | 2777 | if (!dev) |
1da177e4 LT |
2778 | return -ENODEV; |
2779 | ||
ac2c7ad0 KL |
2780 | if (ethcmd == ETHTOOL_PERQUEUE) { |
2781 | if (copy_from_user(&sub_cmd, useraddr + sizeof(ethcmd), sizeof(sub_cmd))) | |
2782 | return -EFAULT; | |
2783 | } else { | |
2784 | sub_cmd = ethcmd; | |
2785 | } | |
75f3123c | 2786 | /* Allow some commands to be done by anyone */ |
ac2c7ad0 | 2787 | switch (sub_cmd) { |
0fdc100b | 2788 | case ETHTOOL_GSET: |
75f3123c | 2789 | case ETHTOOL_GDRVINFO: |
75f3123c | 2790 | case ETHTOOL_GMSGLVL: |
2da45db2 | 2791 | case ETHTOOL_GLINK: |
75f3123c SH |
2792 | case ETHTOOL_GCOALESCE: |
2793 | case ETHTOOL_GRINGPARAM: | |
2794 | case ETHTOOL_GPAUSEPARAM: | |
2795 | case ETHTOOL_GRXCSUM: | |
2796 | case ETHTOOL_GTXCSUM: | |
2797 | case ETHTOOL_GSG: | |
f80400a2 | 2798 | case ETHTOOL_GSSET_INFO: |
75f3123c | 2799 | case ETHTOOL_GSTRINGS: |
2da45db2 | 2800 | case ETHTOOL_GSTATS: |
f3a40945 | 2801 | case ETHTOOL_GPHYSTATS: |
75f3123c SH |
2802 | case ETHTOOL_GTSO: |
2803 | case ETHTOOL_GPERMADDR: | |
474ff260 | 2804 | case ETHTOOL_GUFO: |
75f3123c | 2805 | case ETHTOOL_GGSO: |
1cab819b | 2806 | case ETHTOOL_GGRO: |
339bf024 JG |
2807 | case ETHTOOL_GFLAGS: |
2808 | case ETHTOOL_GPFLAGS: | |
0853ad66 | 2809 | case ETHTOOL_GRXFH: |
59089d8d SB |
2810 | case ETHTOOL_GRXRINGS: |
2811 | case ETHTOOL_GRXCLSRLCNT: | |
2812 | case ETHTOOL_GRXCLSRULE: | |
2813 | case ETHTOOL_GRXCLSRLALL: | |
2da45db2 | 2814 | case ETHTOOL_GRXFHINDIR: |
3de0b592 | 2815 | case ETHTOOL_GRSSH: |
5455c699 | 2816 | case ETHTOOL_GFEATURES: |
2da45db2 | 2817 | case ETHTOOL_GCHANNELS: |
c8f3a8c3 | 2818 | case ETHTOOL_GET_TS_INFO: |
2da45db2 | 2819 | case ETHTOOL_GEEE: |
f0db9b07 | 2820 | case ETHTOOL_GTUNABLE: |
968ad9da | 2821 | case ETHTOOL_PHY_GTUNABLE: |
8006f6bf | 2822 | case ETHTOOL_GLINKSETTINGS: |
1a5f3da2 | 2823 | case ETHTOOL_GFECPARAM: |
75f3123c SH |
2824 | break; |
2825 | default: | |
5e1fccc0 | 2826 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
75f3123c SH |
2827 | return -EPERM; |
2828 | } | |
2829 | ||
f32a2137 HK |
2830 | if (dev->dev.parent) |
2831 | pm_runtime_get_sync(dev->dev.parent); | |
2832 | ||
2833 | if (!netif_device_present(dev)) { | |
2834 | rc = -ENODEV; | |
2835 | goto out; | |
2836 | } | |
2837 | ||
97f8aefb | 2838 | if (dev->ethtool_ops->begin) { |
2839 | rc = dev->ethtool_ops->begin(dev); | |
f32a2137 HK |
2840 | if (rc < 0) |
2841 | goto out; | |
97f8aefb | 2842 | } |
d8a33ac4 SH |
2843 | old_features = dev->features; |
2844 | ||
1da177e4 LT |
2845 | switch (ethcmd) { |
2846 | case ETHTOOL_GSET: | |
2847 | rc = ethtool_get_settings(dev, useraddr); | |
2848 | break; | |
2849 | case ETHTOOL_SSET: | |
2850 | rc = ethtool_set_settings(dev, useraddr); | |
2851 | break; | |
2852 | case ETHTOOL_GDRVINFO: | |
095cfcfe | 2853 | rc = ethtool_get_drvinfo(dev, devlink_state); |
1da177e4 LT |
2854 | break; |
2855 | case ETHTOOL_GREGS: | |
2856 | rc = ethtool_get_regs(dev, useraddr); | |
2857 | break; | |
2858 | case ETHTOOL_GWOL: | |
2859 | rc = ethtool_get_wol(dev, useraddr); | |
2860 | break; | |
2861 | case ETHTOOL_SWOL: | |
2862 | rc = ethtool_set_wol(dev, useraddr); | |
2863 | break; | |
2864 | case ETHTOOL_GMSGLVL: | |
13c99b24 JG |
2865 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2866 | dev->ethtool_ops->get_msglevel); | |
1da177e4 LT |
2867 | break; |
2868 | case ETHTOOL_SMSGLVL: | |
13c99b24 JG |
2869 | rc = ethtool_set_value_void(dev, useraddr, |
2870 | dev->ethtool_ops->set_msglevel); | |
0bda7af3 MK |
2871 | if (!rc) |
2872 | ethtool_notify(dev, ETHTOOL_MSG_DEBUG_NTF, NULL); | |
1da177e4 | 2873 | break; |
80f12ecc YM |
2874 | case ETHTOOL_GEEE: |
2875 | rc = ethtool_get_eee(dev, useraddr); | |
2876 | break; | |
2877 | case ETHTOOL_SEEE: | |
2878 | rc = ethtool_set_eee(dev, useraddr); | |
2879 | break; | |
1da177e4 LT |
2880 | case ETHTOOL_NWAY_RST: |
2881 | rc = ethtool_nway_reset(dev); | |
2882 | break; | |
2883 | case ETHTOOL_GLINK: | |
e596e6e4 | 2884 | rc = ethtool_get_link(dev, useraddr); |
1da177e4 LT |
2885 | break; |
2886 | case ETHTOOL_GEEPROM: | |
2887 | rc = ethtool_get_eeprom(dev, useraddr); | |
2888 | break; | |
2889 | case ETHTOOL_SEEPROM: | |
2890 | rc = ethtool_set_eeprom(dev, useraddr); | |
2891 | break; | |
2892 | case ETHTOOL_GCOALESCE: | |
2893 | rc = ethtool_get_coalesce(dev, useraddr); | |
2894 | break; | |
2895 | case ETHTOOL_SCOALESCE: | |
2896 | rc = ethtool_set_coalesce(dev, useraddr); | |
2897 | break; | |
2898 | case ETHTOOL_GRINGPARAM: | |
2899 | rc = ethtool_get_ringparam(dev, useraddr); | |
2900 | break; | |
2901 | case ETHTOOL_SRINGPARAM: | |
2902 | rc = ethtool_set_ringparam(dev, useraddr); | |
2903 | break; | |
2904 | case ETHTOOL_GPAUSEPARAM: | |
2905 | rc = ethtool_get_pauseparam(dev, useraddr); | |
2906 | break; | |
2907 | case ETHTOOL_SPAUSEPARAM: | |
2908 | rc = ethtool_set_pauseparam(dev, useraddr); | |
2909 | break; | |
1da177e4 LT |
2910 | case ETHTOOL_TEST: |
2911 | rc = ethtool_self_test(dev, useraddr); | |
2912 | break; | |
2913 | case ETHTOOL_GSTRINGS: | |
2914 | rc = ethtool_get_strings(dev, useraddr); | |
2915 | break; | |
2916 | case ETHTOOL_PHYS_ID: | |
2917 | rc = ethtool_phys_id(dev, useraddr); | |
2918 | break; | |
2919 | case ETHTOOL_GSTATS: | |
2920 | rc = ethtool_get_stats(dev, useraddr); | |
2921 | break; | |
a6f9a705 JW |
2922 | case ETHTOOL_GPERMADDR: |
2923 | rc = ethtool_get_perm_addr(dev, useraddr); | |
2924 | break; | |
3ae7c0b2 | 2925 | case ETHTOOL_GFLAGS: |
13c99b24 | 2926 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
bc5787c6 | 2927 | __ethtool_get_flags); |
3ae7c0b2 JG |
2928 | break; |
2929 | case ETHTOOL_SFLAGS: | |
da8ac86c | 2930 | rc = ethtool_set_value(dev, useraddr, __ethtool_set_flags); |
3ae7c0b2 | 2931 | break; |
339bf024 | 2932 | case ETHTOOL_GPFLAGS: |
13c99b24 JG |
2933 | rc = ethtool_get_value(dev, useraddr, ethcmd, |
2934 | dev->ethtool_ops->get_priv_flags); | |
111dcba3 MK |
2935 | if (!rc) |
2936 | ethtool_notify(dev, ETHTOOL_MSG_PRIVFLAGS_NTF, NULL); | |
339bf024 JG |
2937 | break; |
2938 | case ETHTOOL_SPFLAGS: | |
13c99b24 JG |
2939 | rc = ethtool_set_value(dev, useraddr, |
2940 | dev->ethtool_ops->set_priv_flags); | |
339bf024 | 2941 | break; |
0853ad66 | 2942 | case ETHTOOL_GRXFH: |
59089d8d SB |
2943 | case ETHTOOL_GRXRINGS: |
2944 | case ETHTOOL_GRXCLSRLCNT: | |
2945 | case ETHTOOL_GRXCLSRULE: | |
2946 | case ETHTOOL_GRXCLSRLALL: | |
bf988435 | 2947 | rc = ethtool_get_rxnfc(dev, ethcmd, useraddr); |
0853ad66 SB |
2948 | break; |
2949 | case ETHTOOL_SRXFH: | |
59089d8d SB |
2950 | case ETHTOOL_SRXCLSRLDEL: |
2951 | case ETHTOOL_SRXCLSRLINS: | |
bf988435 | 2952 | rc = ethtool_set_rxnfc(dev, ethcmd, useraddr); |
0853ad66 | 2953 | break; |
05c6a8d7 | 2954 | case ETHTOOL_FLASHDEV: |
095cfcfe | 2955 | rc = ethtool_flash_device(dev, devlink_state); |
05c6a8d7 | 2956 | break; |
d73d3a8c BH |
2957 | case ETHTOOL_RESET: |
2958 | rc = ethtool_reset(dev, useraddr); | |
2959 | break; | |
723b2f57 JG |
2960 | case ETHTOOL_GSSET_INFO: |
2961 | rc = ethtool_get_sset_info(dev, useraddr); | |
2962 | break; | |
a5b6ee29 BH |
2963 | case ETHTOOL_GRXFHINDIR: |
2964 | rc = ethtool_get_rxfh_indir(dev, useraddr); | |
2965 | break; | |
2966 | case ETHTOOL_SRXFHINDIR: | |
2967 | rc = ethtool_set_rxfh_indir(dev, useraddr); | |
2968 | break; | |
3de0b592 VD |
2969 | case ETHTOOL_GRSSH: |
2970 | rc = ethtool_get_rxfh(dev, useraddr); | |
2971 | break; | |
2972 | case ETHTOOL_SRSSH: | |
2973 | rc = ethtool_set_rxfh(dev, useraddr); | |
2974 | break; | |
5455c699 MM |
2975 | case ETHTOOL_GFEATURES: |
2976 | rc = ethtool_get_features(dev, useraddr); | |
2977 | break; | |
2978 | case ETHTOOL_SFEATURES: | |
2979 | rc = ethtool_set_features(dev, useraddr); | |
2980 | break; | |
0a417704 | 2981 | case ETHTOOL_GTXCSUM: |
e83d360d | 2982 | case ETHTOOL_GRXCSUM: |
0a417704 MM |
2983 | case ETHTOOL_GSG: |
2984 | case ETHTOOL_GTSO: | |
0a417704 MM |
2985 | case ETHTOOL_GGSO: |
2986 | case ETHTOOL_GGRO: | |
2987 | rc = ethtool_get_one_feature(dev, useraddr, ethcmd); | |
2988 | break; | |
2989 | case ETHTOOL_STXCSUM: | |
e83d360d | 2990 | case ETHTOOL_SRXCSUM: |
0a417704 MM |
2991 | case ETHTOOL_SSG: |
2992 | case ETHTOOL_STSO: | |
0a417704 MM |
2993 | case ETHTOOL_SGSO: |
2994 | case ETHTOOL_SGRO: | |
2995 | rc = ethtool_set_one_feature(dev, useraddr, ethcmd); | |
2996 | break; | |
8b5933c3 | 2997 | case ETHTOOL_GCHANNELS: |
2998 | rc = ethtool_get_channels(dev, useraddr); | |
2999 | break; | |
3000 | case ETHTOOL_SCHANNELS: | |
3001 | rc = ethtool_set_channels(dev, useraddr); | |
3002 | break; | |
29dd54b7 AC |
3003 | case ETHTOOL_SET_DUMP: |
3004 | rc = ethtool_set_dump(dev, useraddr); | |
3005 | break; | |
3006 | case ETHTOOL_GET_DUMP_FLAG: | |
3007 | rc = ethtool_get_dump_flag(dev, useraddr); | |
3008 | break; | |
3009 | case ETHTOOL_GET_DUMP_DATA: | |
3010 | rc = ethtool_get_dump_data(dev, useraddr); | |
3011 | break; | |
c8f3a8c3 RC |
3012 | case ETHTOOL_GET_TS_INFO: |
3013 | rc = ethtool_get_ts_info(dev, useraddr); | |
3014 | break; | |
41c3cb6d SH |
3015 | case ETHTOOL_GMODULEINFO: |
3016 | rc = ethtool_get_module_info(dev, useraddr); | |
3017 | break; | |
3018 | case ETHTOOL_GMODULEEEPROM: | |
3019 | rc = ethtool_get_module_eeprom(dev, useraddr); | |
3020 | break; | |
f0db9b07 GV |
3021 | case ETHTOOL_GTUNABLE: |
3022 | rc = ethtool_get_tunable(dev, useraddr); | |
3023 | break; | |
3024 | case ETHTOOL_STUNABLE: | |
3025 | rc = ethtool_set_tunable(dev, useraddr); | |
3026 | break; | |
f3a40945 AL |
3027 | case ETHTOOL_GPHYSTATS: |
3028 | rc = ethtool_get_phy_stats(dev, useraddr); | |
3029 | break; | |
ac2c7ad0 | 3030 | case ETHTOOL_PERQUEUE: |
58f5bbe3 | 3031 | rc = ethtool_set_per_queue(dev, useraddr, sub_cmd); |
ac2c7ad0 | 3032 | break; |
3f1ac7a7 DD |
3033 | case ETHTOOL_GLINKSETTINGS: |
3034 | rc = ethtool_get_link_ksettings(dev, useraddr); | |
3035 | break; | |
3036 | case ETHTOOL_SLINKSETTINGS: | |
3037 | rc = ethtool_set_link_ksettings(dev, useraddr); | |
3038 | break; | |
968ad9da RL |
3039 | case ETHTOOL_PHY_GTUNABLE: |
3040 | rc = get_phy_tunable(dev, useraddr); | |
3041 | break; | |
3042 | case ETHTOOL_PHY_STUNABLE: | |
3043 | rc = set_phy_tunable(dev, useraddr); | |
3044 | break; | |
1a5f3da2 VSR |
3045 | case ETHTOOL_GFECPARAM: |
3046 | rc = ethtool_get_fecparam(dev, useraddr); | |
3047 | break; | |
3048 | case ETHTOOL_SFECPARAM: | |
3049 | rc = ethtool_set_fecparam(dev, useraddr); | |
3050 | break; | |
1da177e4 | 3051 | default: |
61a44b9c | 3052 | rc = -EOPNOTSUPP; |
1da177e4 | 3053 | } |
4ec93edb | 3054 | |
e71a4783 | 3055 | if (dev->ethtool_ops->complete) |
1da177e4 | 3056 | dev->ethtool_ops->complete(dev); |
d8a33ac4 SH |
3057 | |
3058 | if (old_features != dev->features) | |
3059 | netdev_features_change(dev); | |
f32a2137 HK |
3060 | out: |
3061 | if (dev->dev.parent) | |
3062 | pm_runtime_put(dev->dev.parent); | |
d8a33ac4 | 3063 | |
1da177e4 | 3064 | return rc; |
1da177e4 | 3065 | } |
eca4205f | 3066 | |
f49deaa6 JK |
3067 | int dev_ethtool(struct net *net, struct ifreq *ifr, void __user *useraddr) |
3068 | { | |
095cfcfe JK |
3069 | struct ethtool_devlink_compat *state; |
3070 | u32 ethcmd; | |
f49deaa6 JK |
3071 | int rc; |
3072 | ||
095cfcfe JK |
3073 | if (copy_from_user(ðcmd, useraddr, sizeof(ethcmd))) |
3074 | return -EFAULT; | |
3075 | ||
3076 | state = kzalloc(sizeof(*state), GFP_KERNEL); | |
3077 | if (!state) | |
3078 | return -ENOMEM; | |
3079 | ||
3080 | switch (ethcmd) { | |
3081 | case ETHTOOL_FLASHDEV: | |
3082 | if (copy_from_user(&state->efl, useraddr, sizeof(state->efl))) { | |
3083 | rc = -EFAULT; | |
3084 | goto exit_free; | |
3085 | } | |
3086 | state->efl.data[ETHTOOL_FLASH_MAX_FILENAME - 1] = 0; | |
3087 | break; | |
3088 | } | |
3089 | ||
f49deaa6 | 3090 | rtnl_lock(); |
095cfcfe | 3091 | rc = __dev_ethtool(net, ifr, useraddr, ethcmd, state); |
f49deaa6 | 3092 | rtnl_unlock(); |
095cfcfe JK |
3093 | if (rc) |
3094 | goto exit_free; | |
3095 | ||
3096 | switch (ethcmd) { | |
1af0a094 JK |
3097 | case ETHTOOL_FLASHDEV: |
3098 | if (state->devlink) | |
3099 | rc = devlink_compat_flash_update(state->devlink, | |
3100 | state->efl.data); | |
3101 | break; | |
095cfcfe | 3102 | case ETHTOOL_GDRVINFO: |
1af0a094 JK |
3103 | if (state->devlink) |
3104 | devlink_compat_running_version(state->devlink, | |
3105 | state->info.fw_version, | |
3106 | sizeof(state->info.fw_version)); | |
095cfcfe JK |
3107 | if (copy_to_user(useraddr, &state->info, sizeof(state->info))) { |
3108 | rc = -EFAULT; | |
3109 | goto exit_free; | |
3110 | } | |
3111 | break; | |
3112 | } | |
f49deaa6 | 3113 | |
095cfcfe | 3114 | exit_free: |
1af0a094 JK |
3115 | if (state->devlink) |
3116 | devlink_put(state->devlink); | |
095cfcfe | 3117 | kfree(state); |
f49deaa6 JK |
3118 | return rc; |
3119 | } | |
3120 | ||
eca4205f PNA |
3121 | struct ethtool_rx_flow_key { |
3122 | struct flow_dissector_key_basic basic; | |
3123 | union { | |
3124 | struct flow_dissector_key_ipv4_addrs ipv4; | |
3125 | struct flow_dissector_key_ipv6_addrs ipv6; | |
3126 | }; | |
3127 | struct flow_dissector_key_ports tp; | |
3128 | struct flow_dissector_key_ip ip; | |
3129 | struct flow_dissector_key_vlan vlan; | |
3130 | struct flow_dissector_key_eth_addrs eth_addrs; | |
3131 | } __aligned(BITS_PER_LONG / 8); /* Ensure that we can do comparisons as longs. */ | |
3132 | ||
3133 | struct ethtool_rx_flow_match { | |
3134 | struct flow_dissector dissector; | |
3135 | struct ethtool_rx_flow_key key; | |
3136 | struct ethtool_rx_flow_key mask; | |
3137 | }; | |
3138 | ||
3139 | struct ethtool_rx_flow_rule * | |
3140 | ethtool_rx_flow_rule_create(const struct ethtool_rx_flow_spec_input *input) | |
3141 | { | |
3142 | const struct ethtool_rx_flow_spec *fs = input->fs; | |
eca4205f PNA |
3143 | struct ethtool_rx_flow_match *match; |
3144 | struct ethtool_rx_flow_rule *flow; | |
3145 | struct flow_action_entry *act; | |
3146 | ||
3147 | flow = kzalloc(sizeof(struct ethtool_rx_flow_rule) + | |
3148 | sizeof(struct ethtool_rx_flow_match), GFP_KERNEL); | |
3149 | if (!flow) | |
3150 | return ERR_PTR(-ENOMEM); | |
3151 | ||
3152 | /* ethtool_rx supports only one single action per rule. */ | |
3153 | flow->rule = flow_rule_alloc(1); | |
3154 | if (!flow->rule) { | |
3155 | kfree(flow); | |
3156 | return ERR_PTR(-ENOMEM); | |
3157 | } | |
3158 | ||
3159 | match = (struct ethtool_rx_flow_match *)flow->priv; | |
3160 | flow->rule->match.dissector = &match->dissector; | |
3161 | flow->rule->match.mask = &match->mask; | |
3162 | flow->rule->match.key = &match->key; | |
3163 | ||
3164 | match->mask.basic.n_proto = htons(0xffff); | |
3165 | ||
3166 | switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { | |
5b9469a2 MC |
3167 | case ETHER_FLOW: { |
3168 | const struct ethhdr *ether_spec, *ether_m_spec; | |
3169 | ||
3170 | ether_spec = &fs->h_u.ether_spec; | |
3171 | ether_m_spec = &fs->m_u.ether_spec; | |
3172 | ||
3173 | if (!is_zero_ether_addr(ether_m_spec->h_source)) { | |
3174 | ether_addr_copy(match->key.eth_addrs.src, | |
3175 | ether_spec->h_source); | |
3176 | ether_addr_copy(match->mask.eth_addrs.src, | |
3177 | ether_m_spec->h_source); | |
3178 | } | |
3179 | if (!is_zero_ether_addr(ether_m_spec->h_dest)) { | |
3180 | ether_addr_copy(match->key.eth_addrs.dst, | |
3181 | ether_spec->h_dest); | |
3182 | ether_addr_copy(match->mask.eth_addrs.dst, | |
3183 | ether_m_spec->h_dest); | |
3184 | } | |
3185 | if (ether_m_spec->h_proto) { | |
3186 | match->key.basic.n_proto = ether_spec->h_proto; | |
3187 | match->mask.basic.n_proto = ether_m_spec->h_proto; | |
3188 | } | |
3189 | } | |
3190 | break; | |
eca4205f PNA |
3191 | case TCP_V4_FLOW: |
3192 | case UDP_V4_FLOW: { | |
3193 | const struct ethtool_tcpip4_spec *v4_spec, *v4_m_spec; | |
3194 | ||
3195 | match->key.basic.n_proto = htons(ETH_P_IP); | |
3196 | ||
3197 | v4_spec = &fs->h_u.tcp_ip4_spec; | |
3198 | v4_m_spec = &fs->m_u.tcp_ip4_spec; | |
3199 | ||
3200 | if (v4_m_spec->ip4src) { | |
3201 | match->key.ipv4.src = v4_spec->ip4src; | |
3202 | match->mask.ipv4.src = v4_m_spec->ip4src; | |
3203 | } | |
3204 | if (v4_m_spec->ip4dst) { | |
3205 | match->key.ipv4.dst = v4_spec->ip4dst; | |
3206 | match->mask.ipv4.dst = v4_m_spec->ip4dst; | |
3207 | } | |
3208 | if (v4_m_spec->ip4src || | |
3209 | v4_m_spec->ip4dst) { | |
3210 | match->dissector.used_keys |= | |
2b3082c6 | 3211 | BIT_ULL(FLOW_DISSECTOR_KEY_IPV4_ADDRS); |
eca4205f PNA |
3212 | match->dissector.offset[FLOW_DISSECTOR_KEY_IPV4_ADDRS] = |
3213 | offsetof(struct ethtool_rx_flow_key, ipv4); | |
3214 | } | |
3215 | if (v4_m_spec->psrc) { | |
3216 | match->key.tp.src = v4_spec->psrc; | |
3217 | match->mask.tp.src = v4_m_spec->psrc; | |
3218 | } | |
3219 | if (v4_m_spec->pdst) { | |
3220 | match->key.tp.dst = v4_spec->pdst; | |
3221 | match->mask.tp.dst = v4_m_spec->pdst; | |
3222 | } | |
3223 | if (v4_m_spec->psrc || | |
3224 | v4_m_spec->pdst) { | |
3225 | match->dissector.used_keys |= | |
2b3082c6 | 3226 | BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); |
eca4205f PNA |
3227 | match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = |
3228 | offsetof(struct ethtool_rx_flow_key, tp); | |
3229 | } | |
3230 | if (v4_m_spec->tos) { | |
3231 | match->key.ip.tos = v4_spec->tos; | |
3232 | match->mask.ip.tos = v4_m_spec->tos; | |
3233 | match->dissector.used_keys |= | |
3234 | BIT(FLOW_DISSECTOR_KEY_IP); | |
3235 | match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = | |
3236 | offsetof(struct ethtool_rx_flow_key, ip); | |
3237 | } | |
3238 | } | |
3239 | break; | |
3240 | case TCP_V6_FLOW: | |
3241 | case UDP_V6_FLOW: { | |
3242 | const struct ethtool_tcpip6_spec *v6_spec, *v6_m_spec; | |
3243 | ||
3244 | match->key.basic.n_proto = htons(ETH_P_IPV6); | |
3245 | ||
3246 | v6_spec = &fs->h_u.tcp_ip6_spec; | |
3247 | v6_m_spec = &fs->m_u.tcp_ip6_spec; | |
8cdc3223 | 3248 | if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src)) { |
eca4205f PNA |
3249 | memcpy(&match->key.ipv6.src, v6_spec->ip6src, |
3250 | sizeof(match->key.ipv6.src)); | |
3251 | memcpy(&match->mask.ipv6.src, v6_m_spec->ip6src, | |
3252 | sizeof(match->mask.ipv6.src)); | |
3253 | } | |
8cdc3223 | 3254 | if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { |
eca4205f PNA |
3255 | memcpy(&match->key.ipv6.dst, v6_spec->ip6dst, |
3256 | sizeof(match->key.ipv6.dst)); | |
3257 | memcpy(&match->mask.ipv6.dst, v6_m_spec->ip6dst, | |
3258 | sizeof(match->mask.ipv6.dst)); | |
3259 | } | |
8cdc3223 KI |
3260 | if (!ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6src) || |
3261 | !ipv6_addr_any((struct in6_addr *)v6_m_spec->ip6dst)) { | |
eca4205f | 3262 | match->dissector.used_keys |= |
2b3082c6 | 3263 | BIT_ULL(FLOW_DISSECTOR_KEY_IPV6_ADDRS); |
eca4205f PNA |
3264 | match->dissector.offset[FLOW_DISSECTOR_KEY_IPV6_ADDRS] = |
3265 | offsetof(struct ethtool_rx_flow_key, ipv6); | |
3266 | } | |
3267 | if (v6_m_spec->psrc) { | |
3268 | match->key.tp.src = v6_spec->psrc; | |
3269 | match->mask.tp.src = v6_m_spec->psrc; | |
3270 | } | |
3271 | if (v6_m_spec->pdst) { | |
3272 | match->key.tp.dst = v6_spec->pdst; | |
3273 | match->mask.tp.dst = v6_m_spec->pdst; | |
3274 | } | |
3275 | if (v6_m_spec->psrc || | |
3276 | v6_m_spec->pdst) { | |
3277 | match->dissector.used_keys |= | |
2b3082c6 | 3278 | BIT_ULL(FLOW_DISSECTOR_KEY_PORTS); |
eca4205f PNA |
3279 | match->dissector.offset[FLOW_DISSECTOR_KEY_PORTS] = |
3280 | offsetof(struct ethtool_rx_flow_key, tp); | |
3281 | } | |
3282 | if (v6_m_spec->tclass) { | |
3283 | match->key.ip.tos = v6_spec->tclass; | |
3284 | match->mask.ip.tos = v6_m_spec->tclass; | |
3285 | match->dissector.used_keys |= | |
2b3082c6 | 3286 | BIT_ULL(FLOW_DISSECTOR_KEY_IP); |
eca4205f PNA |
3287 | match->dissector.offset[FLOW_DISSECTOR_KEY_IP] = |
3288 | offsetof(struct ethtool_rx_flow_key, ip); | |
3289 | } | |
3290 | } | |
3291 | break; | |
3292 | default: | |
3293 | ethtool_rx_flow_rule_destroy(flow); | |
3294 | return ERR_PTR(-EINVAL); | |
3295 | } | |
3296 | ||
3297 | switch (fs->flow_type & ~(FLOW_EXT | FLOW_MAC_EXT | FLOW_RSS)) { | |
3298 | case TCP_V4_FLOW: | |
3299 | case TCP_V6_FLOW: | |
3300 | match->key.basic.ip_proto = IPPROTO_TCP; | |
d0a84e1f | 3301 | match->mask.basic.ip_proto = 0xff; |
eca4205f PNA |
3302 | break; |
3303 | case UDP_V4_FLOW: | |
3304 | case UDP_V6_FLOW: | |
3305 | match->key.basic.ip_proto = IPPROTO_UDP; | |
d0a84e1f | 3306 | match->mask.basic.ip_proto = 0xff; |
eca4205f PNA |
3307 | break; |
3308 | } | |
eca4205f | 3309 | |
2b3082c6 | 3310 | match->dissector.used_keys |= BIT_ULL(FLOW_DISSECTOR_KEY_BASIC); |
eca4205f PNA |
3311 | match->dissector.offset[FLOW_DISSECTOR_KEY_BASIC] = |
3312 | offsetof(struct ethtool_rx_flow_key, basic); | |
3313 | ||
3314 | if (fs->flow_type & FLOW_EXT) { | |
3315 | const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; | |
3316 | const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; | |
3317 | ||
b73484b2 | 3318 | if (ext_m_spec->vlan_etype) { |
eca4205f PNA |
3319 | match->key.vlan.vlan_tpid = ext_h_spec->vlan_etype; |
3320 | match->mask.vlan.vlan_tpid = ext_m_spec->vlan_etype; | |
b73484b2 | 3321 | } |
eca4205f | 3322 | |
b73484b2 | 3323 | if (ext_m_spec->vlan_tci) { |
eca4205f PNA |
3324 | match->key.vlan.vlan_id = |
3325 | ntohs(ext_h_spec->vlan_tci) & 0x0fff; | |
3326 | match->mask.vlan.vlan_id = | |
3327 | ntohs(ext_m_spec->vlan_tci) & 0x0fff; | |
3328 | ||
f0d2ca15 MC |
3329 | match->key.vlan.vlan_dei = |
3330 | !!(ext_h_spec->vlan_tci & htons(0x1000)); | |
3331 | match->mask.vlan.vlan_dei = | |
3332 | !!(ext_m_spec->vlan_tci & htons(0x1000)); | |
3333 | ||
eca4205f PNA |
3334 | match->key.vlan.vlan_priority = |
3335 | (ntohs(ext_h_spec->vlan_tci) & 0xe000) >> 13; | |
3336 | match->mask.vlan.vlan_priority = | |
3337 | (ntohs(ext_m_spec->vlan_tci) & 0xe000) >> 13; | |
b73484b2 | 3338 | } |
eca4205f | 3339 | |
b73484b2 MC |
3340 | if (ext_m_spec->vlan_etype || |
3341 | ext_m_spec->vlan_tci) { | |
eca4205f | 3342 | match->dissector.used_keys |= |
2b3082c6 | 3343 | BIT_ULL(FLOW_DISSECTOR_KEY_VLAN); |
eca4205f PNA |
3344 | match->dissector.offset[FLOW_DISSECTOR_KEY_VLAN] = |
3345 | offsetof(struct ethtool_rx_flow_key, vlan); | |
3346 | } | |
3347 | } | |
3348 | if (fs->flow_type & FLOW_MAC_EXT) { | |
3349 | const struct ethtool_flow_ext *ext_h_spec = &fs->h_ext; | |
3350 | const struct ethtool_flow_ext *ext_m_spec = &fs->m_ext; | |
3351 | ||
8b34ec65 NC |
3352 | memcpy(match->key.eth_addrs.dst, ext_h_spec->h_dest, |
3353 | ETH_ALEN); | |
3354 | memcpy(match->mask.eth_addrs.dst, ext_m_spec->h_dest, | |
3355 | ETH_ALEN); | |
3356 | ||
3357 | match->dissector.used_keys |= | |
2b3082c6 | 3358 | BIT_ULL(FLOW_DISSECTOR_KEY_ETH_ADDRS); |
8b34ec65 NC |
3359 | match->dissector.offset[FLOW_DISSECTOR_KEY_ETH_ADDRS] = |
3360 | offsetof(struct ethtool_rx_flow_key, eth_addrs); | |
eca4205f PNA |
3361 | } |
3362 | ||
3363 | act = &flow->rule->action.entries[0]; | |
3364 | switch (fs->ring_cookie) { | |
3365 | case RX_CLS_FLOW_DISC: | |
3366 | act->id = FLOW_ACTION_DROP; | |
3367 | break; | |
3368 | case RX_CLS_FLOW_WAKE: | |
3369 | act->id = FLOW_ACTION_WAKE; | |
3370 | break; | |
3371 | default: | |
3372 | act->id = FLOW_ACTION_QUEUE; | |
3373 | if (fs->flow_type & FLOW_RSS) | |
3374 | act->queue.ctx = input->rss_ctx; | |
3375 | ||
3376 | act->queue.vf = ethtool_get_flow_spec_ring_vf(fs->ring_cookie); | |
3377 | act->queue.index = ethtool_get_flow_spec_ring(fs->ring_cookie); | |
3378 | break; | |
3379 | } | |
3380 | ||
3381 | return flow; | |
3382 | } | |
3383 | EXPORT_SYMBOL(ethtool_rx_flow_rule_create); | |
3384 | ||
3385 | void ethtool_rx_flow_rule_destroy(struct ethtool_rx_flow_rule *flow) | |
3386 | { | |
3387 | kfree(flow->rule); | |
3388 | kfree(flow); | |
3389 | } | |
3390 | EXPORT_SYMBOL(ethtool_rx_flow_rule_destroy); |